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zebra: add info evpn to debugs
[mirror_frr.git] / zebra / zebra_vxlan.c
1 /*
2 * Zebra EVPN for VxLAN code
3 * Copyright (C) 2016, 2017 Cumulus Networks, Inc.
4 *
5 * This file is part of FRR.
6 *
7 * FRR is free software; you can redistribute it and/or modify it
8 * under the terms of the GNU General Public License as published by the
9 * Free Software Foundation; either version 2, or (at your option) any
10 * later version.
11 *
12 * FRR is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with FRR; see the file COPYING. If not, write to the Free
19 * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
20 * 02111-1307, USA.
21 */
22
23 #include <zebra.h>
24
25 #include "hash.h"
26 #include "if.h"
27 #include "jhash.h"
28 #include "linklist.h"
29 #include "log.h"
30 #include "memory.h"
31 #include "prefix.h"
32 #include "stream.h"
33 #include "table.h"
34 #include "vlan.h"
35 #include "vxlan.h"
36 #ifdef GNU_LINUX
37 #include <linux/neighbour.h>
38 #endif
39
40 #include "zebra/zebra_router.h"
41 #include "zebra/debug.h"
42 #include "zebra/interface.h"
43 #include "zebra/rib.h"
44 #include "zebra/rt.h"
45 #include "zebra/rt_netlink.h"
46 #include "zebra/zebra_errors.h"
47 #include "zebra/zebra_l2.h"
48 #include "zebra/zebra_memory.h"
49 #include "zebra/zebra_ns.h"
50 #include "zebra/zebra_vrf.h"
51 #include "zebra/zebra_vxlan.h"
52 #include "zebra/zebra_vxlan_private.h"
53 #include "zebra/zebra_router.h"
54
55 DEFINE_MTYPE_STATIC(ZEBRA, HOST_PREFIX, "host prefix");
56 DEFINE_MTYPE_STATIC(ZEBRA, ZVNI, "VNI hash");
57 DEFINE_MTYPE_STATIC(ZEBRA, ZL3VNI, "L3 VNI hash");
58 DEFINE_MTYPE_STATIC(ZEBRA, ZVNI_VTEP, "VNI remote VTEP");
59 DEFINE_MTYPE_STATIC(ZEBRA, MAC, "VNI MAC");
60 DEFINE_MTYPE_STATIC(ZEBRA, NEIGH, "VNI Neighbor");
61 DEFINE_MTYPE_STATIC(ZEBRA, ZVXLAN_SG, "zebra VxLAN multicast group");
62
63 DEFINE_HOOK(zebra_rmac_update, (zebra_mac_t *rmac, zebra_l3vni_t *zl3vni,
64 bool delete, const char *reason), (rmac, zl3vni, delete, reason))
65
66 /* definitions */
67 /* PMSI strings. */
68 #define VXLAN_FLOOD_STR_NO_INFO "-"
69 #define VXLAN_FLOOD_STR_DEFAULT VXLAN_FLOOD_STR_NO_INFO
70 static const struct message zvtep_flood_str[] = {
71 {VXLAN_FLOOD_DISABLED, VXLAN_FLOOD_STR_NO_INFO},
72 {VXLAN_FLOOD_PIM_SM, "PIM-SM"},
73 {VXLAN_FLOOD_HEAD_END_REPL, "HER"},
74 {0}
75 };
76
77
78 /* static function declarations */
79 static int ip_prefix_send_to_client(vrf_id_t vrf_id, struct prefix *p,
80 uint16_t cmd);
81 static void zvni_print_neigh(zebra_neigh_t *n, void *ctxt, json_object *json);
82 static void zvni_print_neigh_hash(struct hash_bucket *bucket, void *ctxt);
83 static void zvni_print_dad_neigh_hash(struct hash_bucket *bucket, void *ctxt);
84 static void zvni_print_neigh_hash_all_vni(struct hash_bucket *bucket,
85 void **args);
86 static void zl3vni_print_nh(zebra_neigh_t *n, struct vty *vty,
87 json_object *json);
88 static void zl3vni_print_rmac(zebra_mac_t *zrmac, struct vty *vty,
89 json_object *json);
90 static void zvni_print_mac(zebra_mac_t *mac, void *ctxt, json_object *json);
91 static void zvni_print_mac_hash(struct hash_bucket *bucket, void *ctxt);
92 static void zvni_print_mac_hash_all_vni(struct hash_bucket *bucket, void *ctxt);
93 static void zvni_print(zebra_vni_t *zvni, void **ctxt);
94 static void zvni_print_hash(struct hash_bucket *bucket, void *ctxt[]);
95
96 static int zvni_macip_send_msg_to_client(vni_t vni, struct ethaddr *macaddr,
97 struct ipaddr *ip, uint8_t flags,
98 uint32_t seq, int state, uint16_t cmd);
99 static unsigned int neigh_hash_keymake(const void *p);
100 static void *zvni_neigh_alloc(void *p);
101 static zebra_neigh_t *zvni_neigh_add(zebra_vni_t *zvni, struct ipaddr *ip,
102 struct ethaddr *mac);
103 static int zvni_neigh_del(zebra_vni_t *zvni, zebra_neigh_t *n);
104 static void zvni_neigh_del_from_vtep(zebra_vni_t *zvni, int uninstall,
105 struct in_addr *r_vtep_ip);
106 static void zvni_neigh_del_all(zebra_vni_t *zvni, int uninstall, int upd_client,
107 uint32_t flags);
108 static zebra_neigh_t *zvni_neigh_lookup(zebra_vni_t *zvni, struct ipaddr *ip);
109 static int zvni_neigh_send_add_to_client(vni_t vni, struct ipaddr *ip,
110 struct ethaddr *macaddr,
111 uint8_t flags, uint32_t seq);
112 static int zvni_neigh_send_del_to_client(vni_t vni, struct ipaddr *ip,
113 struct ethaddr *macaddr,
114 uint8_t flags, int state);
115 static int zvni_neigh_install(zebra_vni_t *zvni, zebra_neigh_t *n);
116 static int zvni_neigh_uninstall(zebra_vni_t *zvni, zebra_neigh_t *n);
117 static int zvni_neigh_probe(zebra_vni_t *zvni, zebra_neigh_t *n);
118 static zebra_vni_t *zvni_from_svi(struct interface *ifp,
119 struct interface *br_if);
120 static struct interface *zvni_map_to_svi(vlanid_t vid, struct interface *br_if);
121
122 /* l3-vni next-hop neigh related APIs */
123 static zebra_neigh_t *zl3vni_nh_lookup(zebra_l3vni_t *zl3vni,
124 struct ipaddr *ip);
125 static void *zl3vni_nh_alloc(void *p);
126 static zebra_neigh_t *zl3vni_nh_add(zebra_l3vni_t *zl3vni,
127 struct ipaddr *vtep_ip,
128 struct ethaddr *rmac);
129 static int zl3vni_nh_del(zebra_l3vni_t *zl3vni, zebra_neigh_t *n);
130 static int zl3vni_nh_install(zebra_l3vni_t *zl3vni, zebra_neigh_t *n);
131 static int zl3vni_nh_uninstall(zebra_l3vni_t *zl3vni, zebra_neigh_t *n);
132
133 /* l3-vni rmac related APIs */
134 static void zl3vni_print_rmac_hash(struct hash_bucket *, void *);
135 static zebra_mac_t *zl3vni_rmac_lookup(zebra_l3vni_t *zl3vni,
136 struct ethaddr *rmac);
137 static void *zl3vni_rmac_alloc(void *p);
138 static zebra_mac_t *zl3vni_rmac_add(zebra_l3vni_t *zl3vni,
139 struct ethaddr *rmac);
140 static int zl3vni_rmac_del(zebra_l3vni_t *zl3vni, zebra_mac_t *zrmac);
141 static int zl3vni_rmac_install(zebra_l3vni_t *zl3vni, zebra_mac_t *zrmac);
142 static int zl3vni_rmac_uninstall(zebra_l3vni_t *zl3vni, zebra_mac_t *zrmac);
143
144 /* l3-vni related APIs*/
145 static zebra_l3vni_t *zl3vni_lookup(vni_t vni);
146 static void *zl3vni_alloc(void *p);
147 static zebra_l3vni_t *zl3vni_add(vni_t vni, vrf_id_t vrf_id);
148 static int zl3vni_del(zebra_l3vni_t *zl3vni);
149 static void zebra_vxlan_process_l3vni_oper_up(zebra_l3vni_t *zl3vni);
150 static void zebra_vxlan_process_l3vni_oper_down(zebra_l3vni_t *zl3vni);
151
152 static unsigned int mac_hash_keymake(const void *p);
153 static bool mac_cmp(const void *p1, const void *p2);
154 static void *zvni_mac_alloc(void *p);
155 static zebra_mac_t *zvni_mac_add(zebra_vni_t *zvni, struct ethaddr *macaddr);
156 static int zvni_mac_del(zebra_vni_t *zvni, zebra_mac_t *mac);
157 static void zvni_mac_del_from_vtep(zebra_vni_t *zvni, int uninstall,
158 struct in_addr *r_vtep_ip);
159 static void zvni_mac_del_all(zebra_vni_t *zvni, int uninstall, int upd_client,
160 uint32_t flags);
161 static zebra_mac_t *zvni_mac_lookup(zebra_vni_t *zvni, struct ethaddr *macaddr);
162 static int zvni_mac_send_add_to_client(vni_t vni, struct ethaddr *macaddr,
163 uint8_t flags, uint32_t seq);
164 static int zvni_mac_send_del_to_client(vni_t vni, struct ethaddr *macaddr);
165 static zebra_vni_t *zvni_map_vlan(struct interface *ifp,
166 struct interface *br_if, vlanid_t vid);
167 static int zvni_mac_install(zebra_vni_t *zvni, zebra_mac_t *mac);
168 static int zvni_mac_uninstall(zebra_vni_t *zvni, zebra_mac_t *mac);
169 static void zvni_install_mac_hash(struct hash_bucket *bucket, void *ctxt);
170
171 static unsigned int vni_hash_keymake(const void *p);
172 static void *zvni_alloc(void *p);
173 static zebra_vni_t *zvni_lookup(vni_t vni);
174 static zebra_vni_t *zvni_add(vni_t vni);
175 static int zvni_del(zebra_vni_t *zvni);
176 static int zvni_send_add_to_client(zebra_vni_t *zvni);
177 static int zvni_send_del_to_client(vni_t vni);
178 static void zvni_build_hash_table(void);
179 static int zvni_vtep_match(struct in_addr *vtep_ip, zebra_vtep_t *zvtep);
180 static zebra_vtep_t *zvni_vtep_find(zebra_vni_t *zvni, struct in_addr *vtep_ip);
181 static zebra_vtep_t *zvni_vtep_add(zebra_vni_t *zvni, struct in_addr *vtep_ip,
182 int flood_control);
183 static int zvni_vtep_del(zebra_vni_t *zvni, zebra_vtep_t *zvtep);
184 static int zvni_vtep_del_all(zebra_vni_t *zvni, int uninstall);
185 static int zvni_vtep_install(zebra_vni_t *zvni, zebra_vtep_t *zvtep);
186 static int zvni_vtep_uninstall(zebra_vni_t *zvni, struct in_addr *vtep_ip);
187 static int zvni_del_macip_for_intf(struct interface *ifp, zebra_vni_t *zvni);
188 static int zvni_add_macip_for_intf(struct interface *ifp, zebra_vni_t *zvni);
189 static int zvni_gw_macip_add(struct interface *ifp, zebra_vni_t *zvni,
190 struct ethaddr *macaddr, struct ipaddr *ip);
191 static int zvni_gw_macip_del(struct interface *ifp, zebra_vni_t *zvni,
192 struct ipaddr *ip);
193 struct interface *zebra_get_vrr_intf_for_svi(struct interface *ifp);
194 static int advertise_gw_macip_enabled(zebra_vni_t *zvni);
195 static int advertise_svi_macip_enabled(zebra_vni_t *zvni);
196 static int zebra_vxlan_ip_inherit_dad_from_mac(struct zebra_vrf *zvrf,
197 zebra_mac_t *old_zmac,
198 zebra_mac_t *new_zmac,
199 zebra_neigh_t *nbr);
200 static int remote_neigh_count(zebra_mac_t *zmac);
201 static void zvni_deref_ip2mac(zebra_vni_t *zvni, zebra_mac_t *mac);
202 static int zebra_vxlan_dad_mac_auto_recovery_exp(struct thread *t);
203 static int zebra_vxlan_dad_ip_auto_recovery_exp(struct thread *t);
204 static void zebra_vxlan_dup_addr_detect_for_neigh(struct zebra_vrf *zvrf,
205 zebra_neigh_t *nbr,
206 struct in_addr vtep_ip,
207 bool do_dad,
208 bool *is_dup_detect,
209 bool is_local);
210 static void zebra_vxlan_dup_addr_detect_for_mac(struct zebra_vrf *zvrf,
211 zebra_mac_t *mac,
212 struct in_addr vtep_ip,
213 bool do_dad,
214 bool *is_dup_detect,
215 bool is_local);
216 static unsigned int zebra_vxlan_sg_hash_key_make(const void *p);
217 static bool zebra_vxlan_sg_hash_eq(const void *p1, const void *p2);
218 static void zebra_vxlan_sg_do_deref(struct zebra_vrf *zvrf,
219 struct in_addr sip, struct in_addr mcast_grp);
220 static zebra_vxlan_sg_t *zebra_vxlan_sg_do_ref(struct zebra_vrf *vrf,
221 struct in_addr sip, struct in_addr mcast_grp);
222 static void zebra_vxlan_sg_deref(struct in_addr local_vtep_ip,
223 struct in_addr mcast_grp);
224 static void zebra_vxlan_sg_ref(struct in_addr local_vtep_ip,
225 struct in_addr mcast_grp);
226 static void zebra_vxlan_sg_cleanup(struct hash_backet *backet, void *arg);
227
228 static void zvni_send_mac_to_client(zebra_vni_t *zvn);
229 static void zvni_send_neigh_to_client(zebra_vni_t *zvni);
230
231 /* Private functions */
232 static int host_rb_entry_compare(const struct host_rb_entry *hle1,
233 const struct host_rb_entry *hle2)
234 {
235 if (hle1->p.family < hle2->p.family)
236 return -1;
237
238 if (hle1->p.family > hle2->p.family)
239 return 1;
240
241 if (hle1->p.prefixlen < hle2->p.prefixlen)
242 return -1;
243
244 if (hle1->p.prefixlen > hle2->p.prefixlen)
245 return 1;
246
247 if (hle1->p.family == AF_INET) {
248 if (hle1->p.u.prefix4.s_addr < hle2->p.u.prefix4.s_addr)
249 return -1;
250
251 if (hle1->p.u.prefix4.s_addr > hle2->p.u.prefix4.s_addr)
252 return 1;
253
254 return 0;
255 } else if (hle1->p.family == AF_INET6) {
256 return memcmp(&hle1->p.u.prefix6, &hle2->p.u.prefix6,
257 IPV6_MAX_BYTELEN);
258 } else {
259 zlog_debug("%s: Unexpected family type: %d",
260 __PRETTY_FUNCTION__, hle1->p.family);
261 return 0;
262 }
263 }
264 RB_GENERATE(host_rb_tree_entry, host_rb_entry, hl_entry, host_rb_entry_compare);
265
266 static uint32_t rb_host_count(struct host_rb_tree_entry *hrbe)
267 {
268 struct host_rb_entry *hle;
269 uint32_t count = 0;
270
271 RB_FOREACH (hle, host_rb_tree_entry, hrbe)
272 count++;
273
274 return count;
275 }
276
277 /*
278 * Return number of valid MACs in a VNI's MAC hash table - all
279 * remote MACs and non-internal (auto) local MACs count.
280 */
281 static uint32_t num_valid_macs(zebra_vni_t *zvni)
282 {
283 unsigned int i;
284 uint32_t num_macs = 0;
285 struct hash *hash;
286 struct hash_bucket *hb;
287 zebra_mac_t *mac;
288
289 hash = zvni->mac_table;
290 if (!hash)
291 return num_macs;
292 for (i = 0; i < hash->size; i++) {
293 for (hb = hash->index[i]; hb; hb = hb->next) {
294 mac = (zebra_mac_t *)hb->data;
295 if (CHECK_FLAG(mac->flags, ZEBRA_MAC_REMOTE)
296 || CHECK_FLAG(mac->flags, ZEBRA_MAC_LOCAL)
297 || !CHECK_FLAG(mac->flags, ZEBRA_MAC_AUTO))
298 num_macs++;
299 }
300 }
301
302 return num_macs;
303 }
304
305 static uint32_t num_dup_detected_macs(zebra_vni_t *zvni)
306 {
307 unsigned int i;
308 uint32_t num_macs = 0;
309 struct hash *hash;
310 struct hash_bucket *hb;
311 zebra_mac_t *mac;
312
313 hash = zvni->mac_table;
314 if (!hash)
315 return num_macs;
316 for (i = 0; i < hash->size; i++) {
317 for (hb = hash->index[i]; hb; hb = hb->next) {
318 mac = (zebra_mac_t *)hb->data;
319 if (CHECK_FLAG(mac->flags, ZEBRA_MAC_DUPLICATE))
320 num_macs++;
321 }
322 }
323
324 return num_macs;
325 }
326
327 static uint32_t num_dup_detected_neighs(zebra_vni_t *zvni)
328 {
329 unsigned int i;
330 uint32_t num_neighs = 0;
331 struct hash *hash;
332 struct hash_bucket *hb;
333 zebra_neigh_t *nbr;
334
335 hash = zvni->neigh_table;
336 if (!hash)
337 return num_neighs;
338 for (i = 0; i < hash->size; i++) {
339 for (hb = hash->index[i]; hb; hb = hb->next) {
340 nbr = (zebra_neigh_t *)hb->data;
341 if (CHECK_FLAG(nbr->flags, ZEBRA_NEIGH_DUPLICATE))
342 num_neighs++;
343 }
344 }
345
346 return num_neighs;
347 }
348
349 static int advertise_gw_macip_enabled(zebra_vni_t *zvni)
350 {
351 struct zebra_vrf *zvrf;
352
353 zvrf = zebra_vrf_get_evpn();
354 if (zvrf && zvrf->advertise_gw_macip)
355 return 1;
356
357 if (zvni && zvni->advertise_gw_macip)
358 return 1;
359
360 return 0;
361 }
362
363 static int advertise_svi_macip_enabled(zebra_vni_t *zvni)
364 {
365 struct zebra_vrf *zvrf;
366
367 zvrf = zebra_vrf_get_evpn();
368 if (zvrf && zvrf->advertise_svi_macip)
369 return 1;
370
371 if (zvni && zvni->advertise_svi_macip)
372 return 1;
373
374 return 0;
375 }
376
377 /* As part Duplicate Address Detection (DAD) for IP mobility
378 * MAC binding changes, ensure to inherit duplicate flag
379 * from MAC.
380 */
381 static int zebra_vxlan_ip_inherit_dad_from_mac(struct zebra_vrf *zvrf,
382 zebra_mac_t *old_zmac,
383 zebra_mac_t *new_zmac,
384 zebra_neigh_t *nbr)
385 {
386 bool is_old_mac_dup = false;
387 bool is_new_mac_dup = false;
388
389 if (!zvrf->dup_addr_detect)
390 return 0;
391 /* Check old or new MAC is detected as duplicate
392 * mark this neigh as duplicate
393 */
394 if (old_zmac)
395 is_old_mac_dup = CHECK_FLAG(old_zmac->flags,
396 ZEBRA_MAC_DUPLICATE);
397 if (new_zmac)
398 is_new_mac_dup = CHECK_FLAG(new_zmac->flags,
399 ZEBRA_MAC_DUPLICATE);
400 /* Old and/or new MAC can be in duplicate state,
401 * based on that IP/Neigh Inherits the flag.
402 * If New MAC is marked duplicate, inherit to the IP.
403 * If old MAC is duplicate but new MAC is not, clear
404 * duplicate flag for IP and reset detection params
405 * and let IP DAD retrigger.
406 */
407 if (is_new_mac_dup && !CHECK_FLAG(nbr->flags, ZEBRA_NEIGH_DUPLICATE)) {
408 SET_FLAG(nbr->flags, ZEBRA_NEIGH_DUPLICATE);
409 /* Capture Duplicate detection time */
410 nbr->dad_dup_detect_time = monotime(NULL);
411 /* Mark neigh inactive */
412 ZEBRA_NEIGH_SET_INACTIVE(nbr);
413
414 return 1;
415 } else if (is_old_mac_dup && !is_new_mac_dup) {
416 UNSET_FLAG(nbr->flags, ZEBRA_NEIGH_DUPLICATE);
417 nbr->dad_count = 0;
418 nbr->detect_start_time.tv_sec = 0;
419 nbr->detect_start_time.tv_usec = 0;
420 }
421 return 0;
422 }
423
424 static void zebra_vxlan_dup_addr_detect_for_mac(struct zebra_vrf *zvrf,
425 zebra_mac_t *mac,
426 struct in_addr vtep_ip,
427 bool do_dad,
428 bool *is_dup_detect,
429 bool is_local)
430 {
431 zebra_neigh_t *nbr;
432 struct listnode *node = NULL;
433 struct timeval elapsed = {0, 0};
434 char buf[ETHER_ADDR_STRLEN];
435 char buf1[INET6_ADDRSTRLEN];
436 bool reset_params = false;
437
438 if (!(zvrf->dup_addr_detect && do_dad))
439 return;
440
441 /* MAC is detected as duplicate,
442 * Local MAC event -> hold on advertising to BGP.
443 * Remote MAC event -> hold on installing it.
444 */
445 if (CHECK_FLAG(mac->flags, ZEBRA_MAC_DUPLICATE)) {
446 if (IS_ZEBRA_DEBUG_VXLAN)
447 zlog_debug(
448 "%s: duplicate addr MAC %s flags 0x%x skip update to client, learn count %u recover time %u",
449 __PRETTY_FUNCTION__,
450 prefix_mac2str(&mac->macaddr, buf,
451 sizeof(buf)),
452 mac->flags, mac->dad_count,
453 zvrf->dad_freeze_time);
454
455 /* For duplicate MAC do not update
456 * client but update neigh due to
457 * this MAC update.
458 */
459 if (zvrf->dad_freeze)
460 *is_dup_detect = true;
461
462 return;
463 }
464
465 /* Check if detection time (M-secs) expired.
466 * Reset learn count and detection start time.
467 */
468 monotime_since(&mac->detect_start_time, &elapsed);
469 reset_params = (elapsed.tv_sec > zvrf->dad_time);
470 if (is_local && !reset_params) {
471 /* RFC-7432: A PE/VTEP that detects a MAC mobility
472 * event via LOCAL learning starts an M-second timer.
473 *
474 * NOTE: This is the START of the probe with count is
475 * 0 during LOCAL learn event.
476 * (mac->dad_count == 0 || elapsed.tv_sec >= zvrf->dad_time)
477 */
478 reset_params = !mac->dad_count;
479 }
480
481 if (reset_params) {
482 if (IS_ZEBRA_DEBUG_VXLAN)
483 zlog_debug(
484 "%s: duplicate addr MAC %s flags 0x%x detection time passed, reset learn count %u"
485 , __PRETTY_FUNCTION__,
486 prefix_mac2str(&mac->macaddr, buf,
487 sizeof(buf)),
488 mac->flags, mac->dad_count);
489
490 mac->dad_count = 0;
491 /* Start dup. addr detection (DAD) start time,
492 * ONLY during LOCAL learn.
493 */
494 if (is_local)
495 monotime(&mac->detect_start_time);
496
497 } else if (!is_local) {
498 /* For REMOTE MAC, increment detection count
499 * ONLY while in probe window, once window passed,
500 * next local learn event should trigger DAD.
501 */
502 mac->dad_count++;
503 }
504
505 /* For LOCAL MAC learn event, once count is reset above via either
506 * initial/start detection time or passed the probe time, the count
507 * needs to be incremented.
508 */
509 if (is_local)
510 mac->dad_count++;
511
512 if (mac->dad_count >= zvrf->dad_max_moves) {
513 flog_warn(EC_ZEBRA_DUP_MAC_DETECTED,
514 "VNI %u: MAC %s detected as duplicate during %s VTEP %s",
515 mac->zvni->vni,
516 prefix_mac2str(&mac->macaddr, buf, sizeof(buf)),
517 is_local ? "local update, last" :
518 "remote update, from", inet_ntoa(vtep_ip));
519
520 SET_FLAG(mac->flags, ZEBRA_MAC_DUPLICATE);
521
522 /* Capture Duplicate detection time */
523 mac->dad_dup_detect_time = monotime(NULL);
524
525 /* Mark all IPs/Neighs as duplicate
526 * associcated with this MAC
527 */
528 for (ALL_LIST_ELEMENTS_RO(mac->neigh_list, node, nbr)) {
529
530 /* Ony Mark IPs which are Local */
531 if (!CHECK_FLAG(nbr->flags, ZEBRA_NEIGH_LOCAL))
532 continue;
533
534 SET_FLAG(nbr->flags, ZEBRA_NEIGH_DUPLICATE);
535
536 nbr->dad_dup_detect_time = monotime(NULL);
537
538 flog_warn(EC_ZEBRA_DUP_IP_INHERIT_DETECTED,
539 "VNI %u: MAC %s IP %s detected as duplicate during %s update, inherit duplicate from MAC",
540 mac->zvni->vni,
541 prefix_mac2str(&mac->macaddr,
542 buf, sizeof(buf)),
543 ipaddr2str(&nbr->ip, buf1, sizeof(buf1)),
544 is_local ? "local" : "remote");
545 }
546
547 /* Start auto recovery timer for this MAC */
548 THREAD_OFF(mac->dad_mac_auto_recovery_timer);
549 if (zvrf->dad_freeze && zvrf->dad_freeze_time) {
550 if (IS_ZEBRA_DEBUG_VXLAN)
551 zlog_debug(
552 "%s: duplicate addr MAC %s flags 0x%x auto recovery time %u start"
553 , __PRETTY_FUNCTION__,
554 prefix_mac2str(&mac->macaddr, buf,
555 sizeof(buf)),
556 mac->flags, zvrf->dad_freeze_time);
557
558 thread_add_timer(zrouter.master,
559 zebra_vxlan_dad_mac_auto_recovery_exp,
560 mac, zvrf->dad_freeze_time,
561 &mac->dad_mac_auto_recovery_timer);
562 }
563
564 /* In case of local update, do not inform to client (BGPd),
565 * upd_neigh for neigh sequence change.
566 */
567 if (zvrf->dad_freeze)
568 *is_dup_detect = true;
569 }
570 }
571
572 static void zebra_vxlan_dup_addr_detect_for_neigh(struct zebra_vrf *zvrf,
573 zebra_neigh_t *nbr,
574 struct in_addr vtep_ip,
575 bool do_dad,
576 bool *is_dup_detect,
577 bool is_local)
578 {
579
580 struct timeval elapsed = {0, 0};
581 char buf[ETHER_ADDR_STRLEN];
582 char buf1[INET6_ADDRSTRLEN];
583 bool reset_params = false;
584
585 if (!zvrf->dup_addr_detect)
586 return;
587
588 /* IP is detected as duplicate or inherit dup
589 * state, hold on to install as remote entry
590 * only if freeze is enabled.
591 */
592 if (CHECK_FLAG(nbr->flags, ZEBRA_NEIGH_DUPLICATE)) {
593 if (IS_ZEBRA_DEBUG_VXLAN)
594 zlog_debug(
595 "%s: duplicate addr MAC %s IP %s flags 0x%x skip installing, learn count %u recover time %u",
596 __PRETTY_FUNCTION__,
597 prefix_mac2str(&nbr->emac, buf, sizeof(buf)),
598 ipaddr2str(&nbr->ip, buf1, sizeof(buf1)),
599 nbr->flags, nbr->dad_count,
600 zvrf->dad_freeze_time);
601
602 if (zvrf->dad_freeze)
603 *is_dup_detect = true;
604
605 /* warn-only action, neigh will be installed.
606 * freeze action, it wil not be installed.
607 */
608 return;
609 }
610
611 if (!do_dad)
612 return;
613
614 /* Check if detection time (M-secs) expired.
615 * Reset learn count and detection start time.
616 * During remote mac add, count should already be 1
617 * via local learning.
618 */
619 monotime_since(&nbr->detect_start_time, &elapsed);
620 reset_params = (elapsed.tv_sec > zvrf->dad_time);
621
622 if (is_local && !reset_params) {
623 /* RFC-7432: A PE/VTEP that detects a MAC mobility
624 * event via LOCAL learning starts an M-second timer.
625 *
626 * NOTE: This is the START of the probe with count is
627 * 0 during LOCAL learn event.
628 */
629 reset_params = !nbr->dad_count;
630 }
631
632 if (reset_params) {
633 if (IS_ZEBRA_DEBUG_VXLAN)
634 zlog_debug(
635 "%s: duplicate addr MAC %s IP %s flags 0x%x detection time passed, reset learn count %u",
636 __PRETTY_FUNCTION__,
637 prefix_mac2str(&nbr->emac, buf, sizeof(buf)),
638 ipaddr2str(&nbr->ip, buf1, sizeof(buf1)),
639 nbr->flags, nbr->dad_count);
640 /* Reset learn count but do not start detection
641 * during REMOTE learn event.
642 */
643 nbr->dad_count = 0;
644 /* Start dup. addr detection (DAD) start time,
645 * ONLY during LOCAL learn.
646 */
647 if (is_local)
648 monotime(&nbr->detect_start_time);
649
650 } else if (!is_local) {
651 /* For REMOTE IP/Neigh, increment detection count
652 * ONLY while in probe window, once window passed,
653 * next local learn event should trigger DAD.
654 */
655 nbr->dad_count++;
656 }
657
658 /* For LOCAL IP/Neigh learn event, once count is reset above via either
659 * initial/start detection time or passed the probe time, the count
660 * needs to be incremented.
661 */
662 if (is_local)
663 nbr->dad_count++;
664
665 if (nbr->dad_count >= zvrf->dad_max_moves) {
666 flog_warn(EC_ZEBRA_DUP_IP_DETECTED,
667 "VNI %u: MAC %s IP %s detected as duplicate during %s VTEP %s",
668 nbr->zvni->vni,
669 prefix_mac2str(&nbr->emac, buf, sizeof(buf)),
670 ipaddr2str(&nbr->ip, buf1, sizeof(buf1)),
671 is_local ? "local update, last" :
672 "remote update, from",
673 inet_ntoa(vtep_ip));
674
675 SET_FLAG(nbr->flags, ZEBRA_NEIGH_DUPLICATE);
676
677 /* Capture Duplicate detection time */
678 nbr->dad_dup_detect_time = monotime(NULL);
679
680 /* Start auto recovery timer for this IP */
681 THREAD_OFF(nbr->dad_ip_auto_recovery_timer);
682 if (zvrf->dad_freeze && zvrf->dad_freeze_time) {
683 if (IS_ZEBRA_DEBUG_VXLAN)
684 zlog_debug(
685 "%s: duplicate addr MAC %s IP %s flags 0x%x auto recovery time %u start",
686 __PRETTY_FUNCTION__,
687 prefix_mac2str(&nbr->emac, buf, sizeof(buf)),
688 ipaddr2str(&nbr->ip, buf1, sizeof(buf1)),
689 nbr->flags, zvrf->dad_freeze_time);
690
691 thread_add_timer(zrouter.master,
692 zebra_vxlan_dad_ip_auto_recovery_exp,
693 nbr, zvrf->dad_freeze_time,
694 &nbr->dad_ip_auto_recovery_timer);
695 }
696 if (zvrf->dad_freeze)
697 *is_dup_detect = true;
698 }
699 }
700
701 /*
702 * Helper function to determine maximum width of neighbor IP address for
703 * display - just because we're dealing with IPv6 addresses that can
704 * widely vary.
705 */
706 static void zvni_find_neigh_addr_width(struct hash_bucket *bucket, void *ctxt)
707 {
708 zebra_neigh_t *n;
709 char buf[INET6_ADDRSTRLEN];
710 struct neigh_walk_ctx *wctx = ctxt;
711 int width;
712
713 n = (zebra_neigh_t *)bucket->data;
714
715 ipaddr2str(&n->ip, buf, sizeof(buf));
716 width = strlen(buf);
717 if (width > wctx->addr_width)
718 wctx->addr_width = width;
719
720 }
721
722 /*
723 * Print a specific neighbor entry.
724 */
725 static void zvni_print_neigh(zebra_neigh_t *n, void *ctxt, json_object *json)
726 {
727 struct vty *vty;
728 char buf1[ETHER_ADDR_STRLEN];
729 char buf2[INET6_ADDRSTRLEN];
730 const char *type_str;
731 const char *state_str;
732 bool flags_present = false;
733 struct zebra_vrf *zvrf = NULL;
734 struct timeval detect_start_time = {0, 0};
735 char timebuf[MONOTIME_STRLEN];
736
737 zvrf = zebra_vrf_get_evpn();
738 if (!zvrf)
739 return;
740
741 ipaddr2str(&n->ip, buf2, sizeof(buf2));
742 prefix_mac2str(&n->emac, buf1, sizeof(buf1));
743 type_str = CHECK_FLAG(n->flags, ZEBRA_NEIGH_LOCAL) ?
744 "local" : "remote";
745 state_str = IS_ZEBRA_NEIGH_ACTIVE(n) ? "active" : "inactive";
746 vty = (struct vty *)ctxt;
747 if (json == NULL) {
748 vty_out(vty, "IP: %s\n",
749 ipaddr2str(&n->ip, buf2, sizeof(buf2)));
750 vty_out(vty, " Type: %s\n", type_str);
751 vty_out(vty, " State: %s\n", state_str);
752 vty_out(vty, " MAC: %s\n",
753 prefix_mac2str(&n->emac, buf1, sizeof(buf1)));
754 } else {
755 json_object_string_add(json, "ip", buf2);
756 json_object_string_add(json, "type", type_str);
757 json_object_string_add(json, "state", state_str);
758 json_object_string_add(json, "mac", buf1);
759 }
760 if (CHECK_FLAG(n->flags, ZEBRA_NEIGH_REMOTE)) {
761 if (json == NULL) {
762 vty_out(vty, " Remote VTEP: %s\n",
763 inet_ntoa(n->r_vtep_ip));
764 } else
765 json_object_string_add(json, "remoteVtep",
766 inet_ntoa(n->r_vtep_ip));
767 }
768 if (CHECK_FLAG(n->flags, ZEBRA_NEIGH_DEF_GW)) {
769 if (!json) {
770 vty_out(vty, " Flags: Default-gateway");
771 flags_present = true;
772 } else
773 json_object_boolean_true_add(json, "defaultGateway");
774 }
775 if (CHECK_FLAG(n->flags, ZEBRA_NEIGH_ROUTER_FLAG)) {
776 if (!json) {
777 vty_out(vty,
778 flags_present ? " ,Router" : " Flags: Router");
779 flags_present = true;
780 }
781 }
782 if (json == NULL) {
783 if (flags_present)
784 vty_out(vty, "\n");
785 vty_out(vty, " Local Seq: %u Remote Seq: %u\n",
786 n->loc_seq, n->rem_seq);
787
788 if (CHECK_FLAG(n->flags, ZEBRA_NEIGH_DUPLICATE)) {
789 vty_out(vty, " Duplicate, detected at %s",
790 time_to_string(n->dad_dup_detect_time,
791 timebuf));
792 } else if (n->dad_count) {
793 monotime_since(&n->detect_start_time,
794 &detect_start_time);
795 if (detect_start_time.tv_sec <= zvrf->dad_time) {
796 time_to_string(n->detect_start_time.tv_sec,
797 timebuf);
798 vty_out(vty,
799 " Duplicate detection started at %s, detection count %u\n",
800 timebuf, n->dad_count);
801 }
802 }
803 } else {
804 json_object_int_add(json, "localSequence", n->loc_seq);
805 json_object_int_add(json, "remoteSequence", n->rem_seq);
806 json_object_int_add(json, "detectionCount",
807 n->dad_count);
808 if (CHECK_FLAG(n->flags, ZEBRA_NEIGH_DUPLICATE))
809 json_object_boolean_true_add(json, "isDuplicate");
810 else
811 json_object_boolean_false_add(json, "isDuplicate");
812
813
814 }
815 }
816
817 /*
818 * Print neighbor hash entry - called for display of all neighbors.
819 */
820 static void zvni_print_neigh_hash(struct hash_bucket *bucket, void *ctxt)
821 {
822 struct vty *vty;
823 json_object *json_vni = NULL, *json_row = NULL;
824 zebra_neigh_t *n;
825 char buf1[ETHER_ADDR_STRLEN];
826 char buf2[INET6_ADDRSTRLEN];
827 struct neigh_walk_ctx *wctx = ctxt;
828 const char *state_str;
829
830 vty = wctx->vty;
831 json_vni = wctx->json;
832 n = (zebra_neigh_t *)bucket->data;
833
834 if (json_vni)
835 json_row = json_object_new_object();
836
837 prefix_mac2str(&n->emac, buf1, sizeof(buf1));
838 ipaddr2str(&n->ip, buf2, sizeof(buf2));
839 state_str = IS_ZEBRA_NEIGH_ACTIVE(n) ? "active" : "inactive";
840 if (CHECK_FLAG(n->flags, ZEBRA_NEIGH_LOCAL)) {
841 if (wctx->flags & SHOW_REMOTE_NEIGH_FROM_VTEP)
842 return;
843
844 if (json_vni == NULL) {
845 vty_out(vty, "%*s %-6s %-8s %-17s %u/%u\n",
846 -wctx->addr_width, buf2, "local",
847 state_str, buf1, n->loc_seq, n->rem_seq);
848 } else {
849 json_object_string_add(json_row, "type", "local");
850 json_object_string_add(json_row, "state", state_str);
851 json_object_string_add(json_row, "mac", buf1);
852 if (CHECK_FLAG(n->flags, ZEBRA_NEIGH_DEF_GW))
853 json_object_boolean_true_add(
854 json_row, "defaultGateway");
855 json_object_int_add(json_row, "localSequence",
856 n->loc_seq);
857 json_object_int_add(json_row, "remoteSequence",
858 n->rem_seq);
859 json_object_int_add(json_row, "detectionCount",
860 n->dad_count);
861 if (CHECK_FLAG(n->flags, ZEBRA_NEIGH_DUPLICATE))
862 json_object_boolean_true_add(json_row,
863 "isDuplicate");
864 else
865 json_object_boolean_false_add(json_row,
866 "isDuplicate");
867 }
868 wctx->count++;
869 } else if (CHECK_FLAG(n->flags, ZEBRA_NEIGH_REMOTE)) {
870 if ((wctx->flags & SHOW_REMOTE_NEIGH_FROM_VTEP) &&
871 !IPV4_ADDR_SAME(&n->r_vtep_ip, &wctx->r_vtep_ip))
872 return;
873
874 if (json_vni == NULL) {
875 if ((wctx->flags & SHOW_REMOTE_NEIGH_FROM_VTEP) &&
876 (wctx->count == 0))
877 vty_out(vty, "%*s %-6s %-8s %-17s %-21s %s\n",
878 -wctx->addr_width, "Neighbor", "Type",
879 "State", "MAC", "Remote VTEP",
880 "Seq #'s");
881 vty_out(vty, "%*s %-6s %-8s %-17s %-21s %u/%u\n",
882 -wctx->addr_width, buf2, "remote", state_str,
883 buf1, inet_ntoa(n->r_vtep_ip), n->loc_seq, n->rem_seq);
884 } else {
885 json_object_string_add(json_row, "type", "remote");
886 json_object_string_add(json_row, "state", state_str);
887 json_object_string_add(json_row, "mac", buf1);
888 json_object_string_add(json_row, "remoteVtep",
889 inet_ntoa(n->r_vtep_ip));
890 if (CHECK_FLAG(n->flags, ZEBRA_NEIGH_DEF_GW))
891 json_object_boolean_true_add(json_row,
892 "defaultGateway");
893 json_object_int_add(json_row, "localSequence",
894 n->loc_seq);
895 json_object_int_add(json_row, "remoteSequence",
896 n->rem_seq);
897 json_object_int_add(json_row, "detectionCount",
898 n->dad_count);
899 if (CHECK_FLAG(n->flags, ZEBRA_NEIGH_DUPLICATE))
900 json_object_boolean_true_add(json_row,
901 "isDuplicate");
902 else
903 json_object_boolean_false_add(json_row,
904 "isDuplicate");
905 }
906 wctx->count++;
907 }
908
909 if (json_vni)
910 json_object_object_add(json_vni, buf2, json_row);
911 }
912
913 /*
914 * Print neighbor hash entry in detail - called for display of all neighbors.
915 */
916 static void zvni_print_neigh_hash_detail(struct hash_bucket *bucket, void *ctxt)
917 {
918 struct vty *vty;
919 json_object *json_vni = NULL, *json_row = NULL;
920 zebra_neigh_t *n;
921 char buf[INET6_ADDRSTRLEN];
922 struct neigh_walk_ctx *wctx = ctxt;
923
924 vty = wctx->vty;
925 json_vni = wctx->json;
926 n = (zebra_neigh_t *)bucket->data;
927 if (!n)
928 return;
929
930 ipaddr2str(&n->ip, buf, sizeof(buf));
931 if (json_vni)
932 json_row = json_object_new_object();
933
934 zvni_print_neigh(n, vty, json_row);
935
936 if (json_vni)
937 json_object_object_add(json_vni, buf, json_row);
938 }
939
940 /*
941 * Print neighbors for all VNI.
942 */
943 static void zvni_print_neigh_hash_all_vni(struct hash_bucket *bucket,
944 void **args)
945 {
946 struct vty *vty;
947 json_object *json = NULL, *json_vni = NULL;
948 zebra_vni_t *zvni;
949 uint32_t num_neigh;
950 struct neigh_walk_ctx wctx;
951 char vni_str[VNI_STR_LEN];
952 uint32_t print_dup;
953
954 vty = (struct vty *)args[0];
955 json = (json_object *)args[1];
956 print_dup = (uint32_t)(uintptr_t)args[2];
957
958 zvni = (zebra_vni_t *)bucket->data;
959
960 num_neigh = hashcount(zvni->neigh_table);
961
962 if (print_dup)
963 num_neigh = num_dup_detected_neighs(zvni);
964
965 if (json == NULL) {
966 vty_out(vty,
967 "\nVNI %u #ARP (IPv4 and IPv6, local and remote) %u\n\n",
968 zvni->vni, num_neigh);
969 } else {
970 json_vni = json_object_new_object();
971 json_object_int_add(json_vni, "numArpNd", num_neigh);
972 snprintf(vni_str, VNI_STR_LEN, "%u", zvni->vni);
973 }
974
975 if (!num_neigh) {
976 if (json)
977 json_object_object_add(json, vni_str, json_vni);
978 return;
979 }
980
981 /* Since we have IPv6 addresses to deal with which can vary widely in
982 * size, we try to be a bit more elegant in display by first computing
983 * the maximum width.
984 */
985 memset(&wctx, 0, sizeof(struct neigh_walk_ctx));
986 wctx.zvni = zvni;
987 wctx.vty = vty;
988 wctx.addr_width = 15;
989 wctx.json = json_vni;
990 hash_iterate(zvni->neigh_table, zvni_find_neigh_addr_width, &wctx);
991
992 if (json == NULL) {
993 vty_out(vty, "%*s %-6s %-8s %-17s %-21s %s\n",
994 -wctx.addr_width, "IP", "Type",
995 "State", "MAC", "Remote VTEP", "Seq #'s");
996 }
997 if (print_dup)
998 hash_iterate(zvni->neigh_table, zvni_print_dad_neigh_hash,
999 &wctx);
1000 else
1001 hash_iterate(zvni->neigh_table, zvni_print_neigh_hash, &wctx);
1002
1003 if (json)
1004 json_object_object_add(json, vni_str, json_vni);
1005 }
1006
1007 static void zvni_print_dad_neigh_hash(struct hash_bucket *bucket, void *ctxt)
1008 {
1009 zebra_neigh_t *nbr;
1010
1011 nbr = (zebra_neigh_t *)bucket->data;
1012 if (!nbr)
1013 return;
1014
1015 if (CHECK_FLAG(nbr->flags, ZEBRA_NEIGH_DUPLICATE))
1016 zvni_print_neigh_hash(bucket, ctxt);
1017 }
1018
1019 static void zvni_print_dad_neigh_hash_detail(struct hash_bucket *bucket,
1020 void *ctxt)
1021 {
1022 zebra_neigh_t *nbr;
1023
1024 nbr = (zebra_neigh_t *)bucket->data;
1025 if (!nbr)
1026 return;
1027
1028 if (CHECK_FLAG(nbr->flags, ZEBRA_NEIGH_DUPLICATE))
1029 zvni_print_neigh_hash_detail(bucket, ctxt);
1030 }
1031
1032 /*
1033 * Print neighbors for all VNIs in detail.
1034 */
1035 static void zvni_print_neigh_hash_all_vni_detail(struct hash_bucket *bucket,
1036 void **args)
1037 {
1038 struct vty *vty;
1039 json_object *json = NULL, *json_vni = NULL;
1040 zebra_vni_t *zvni;
1041 uint32_t num_neigh;
1042 struct neigh_walk_ctx wctx;
1043 char vni_str[VNI_STR_LEN];
1044 uint32_t print_dup;
1045
1046 vty = (struct vty *)args[0];
1047 json = (json_object *)args[1];
1048 print_dup = (uint32_t)(uintptr_t)args[2];
1049
1050 zvni = (zebra_vni_t *)bucket->data;
1051 if (!zvni) {
1052 if (json)
1053 vty_out(vty, "{}\n");
1054 return;
1055 }
1056 num_neigh = hashcount(zvni->neigh_table);
1057
1058 if (print_dup && num_dup_detected_neighs(zvni) == 0)
1059 return;
1060
1061 if (json == NULL) {
1062 vty_out(vty,
1063 "\nVNI %u #ARP (IPv4 and IPv6, local and remote) %u\n\n",
1064 zvni->vni, num_neigh);
1065 } else {
1066 json_vni = json_object_new_object();
1067 json_object_int_add(json_vni, "numArpNd", num_neigh);
1068 snprintf(vni_str, VNI_STR_LEN, "%u", zvni->vni);
1069 }
1070 if (!num_neigh) {
1071 if (json)
1072 json_object_object_add(json, vni_str, json_vni);
1073 return;
1074 }
1075
1076 memset(&wctx, 0, sizeof(struct neigh_walk_ctx));
1077 wctx.zvni = zvni;
1078 wctx.vty = vty;
1079 wctx.addr_width = 15;
1080 wctx.json = json_vni;
1081
1082 if (print_dup)
1083 hash_iterate(zvni->neigh_table,
1084 zvni_print_dad_neigh_hash_detail, &wctx);
1085 else
1086 hash_iterate(zvni->neigh_table, zvni_print_neigh_hash_detail,
1087 &wctx);
1088
1089 if (json)
1090 json_object_object_add(json, vni_str, json_vni);
1091 }
1092
1093 /* print a specific next hop for an l3vni */
1094 static void zl3vni_print_nh(zebra_neigh_t *n, struct vty *vty,
1095 json_object *json)
1096 {
1097 char buf1[ETHER_ADDR_STRLEN];
1098 char buf2[INET6_ADDRSTRLEN];
1099 json_object *json_hosts = NULL;
1100 struct host_rb_entry *hle;
1101
1102 if (!json) {
1103 vty_out(vty, "Ip: %s\n",
1104 ipaddr2str(&n->ip, buf2, sizeof(buf2)));
1105 vty_out(vty, " RMAC: %s\n",
1106 prefix_mac2str(&n->emac, buf1, sizeof(buf1)));
1107 vty_out(vty, " Refcount: %d\n",
1108 rb_host_count(&n->host_rb));
1109 vty_out(vty, " Prefixes:\n");
1110 RB_FOREACH (hle, host_rb_tree_entry, &n->host_rb)
1111 vty_out(vty, " %s\n",
1112 prefix2str(&hle->p, buf2, sizeof(buf2)));
1113 } else {
1114 json_hosts = json_object_new_array();
1115 json_object_string_add(
1116 json, "ip", ipaddr2str(&(n->ip), buf2, sizeof(buf2)));
1117 json_object_string_add(
1118 json, "routerMac",
1119 prefix_mac2str(&n->emac, buf2, sizeof(buf2)));
1120 json_object_int_add(json, "refCount",
1121 rb_host_count(&n->host_rb));
1122 RB_FOREACH (hle, host_rb_tree_entry, &n->host_rb)
1123 json_object_array_add(json_hosts,
1124 json_object_new_string(prefix2str(
1125 &hle->p, buf2, sizeof(buf2))));
1126 json_object_object_add(json, "prefixList", json_hosts);
1127 }
1128 }
1129
1130 /* Print a specific RMAC entry */
1131 static void zl3vni_print_rmac(zebra_mac_t *zrmac, struct vty *vty,
1132 json_object *json)
1133 {
1134 char buf1[ETHER_ADDR_STRLEN];
1135 char buf2[PREFIX_STRLEN];
1136 json_object *json_hosts = NULL;
1137 struct host_rb_entry *hle;
1138
1139 if (!json) {
1140 vty_out(vty, "MAC: %s\n",
1141 prefix_mac2str(&zrmac->macaddr, buf1, sizeof(buf1)));
1142 vty_out(vty, " Remote VTEP: %s\n",
1143 inet_ntoa(zrmac->fwd_info.r_vtep_ip));
1144 vty_out(vty, " Refcount: %d\n", rb_host_count(&zrmac->host_rb));
1145 vty_out(vty, " Prefixes:\n");
1146 RB_FOREACH (hle, host_rb_tree_entry, &zrmac->host_rb)
1147 vty_out(vty, " %s\n",
1148 prefix2str(&hle->p, buf2, sizeof(buf2)));
1149 } else {
1150 json_hosts = json_object_new_array();
1151 json_object_string_add(
1152 json, "routerMac",
1153 prefix_mac2str(&zrmac->macaddr, buf1, sizeof(buf1)));
1154 json_object_string_add(json, "vtepIp",
1155 inet_ntoa(zrmac->fwd_info.r_vtep_ip));
1156 json_object_int_add(json, "refCount",
1157 rb_host_count(&zrmac->host_rb));
1158 json_object_int_add(json, "localSequence", zrmac->loc_seq);
1159 json_object_int_add(json, "remoteSequence", zrmac->rem_seq);
1160 RB_FOREACH (hle, host_rb_tree_entry, &zrmac->host_rb)
1161 json_object_array_add(
1162 json_hosts,
1163 json_object_new_string(prefix2str(
1164 &hle->p, buf2, sizeof(buf2))));
1165 json_object_object_add(json, "prefixList", json_hosts);
1166 }
1167 }
1168
1169 /*
1170 * Print a specific MAC entry.
1171 */
1172 static void zvni_print_mac(zebra_mac_t *mac, void *ctxt, json_object *json)
1173 {
1174 struct vty *vty;
1175 zebra_neigh_t *n = NULL;
1176 struct listnode *node = NULL;
1177 char buf1[ETHER_ADDR_STRLEN];
1178 char buf2[INET6_ADDRSTRLEN];
1179 struct zebra_vrf *zvrf;
1180 struct timeval detect_start_time = {0, 0};
1181 char timebuf[MONOTIME_STRLEN];
1182
1183 zvrf = zebra_vrf_get_evpn();
1184 if (!zvrf)
1185 return;
1186
1187 vty = (struct vty *)ctxt;
1188 prefix_mac2str(&mac->macaddr, buf1, sizeof(buf1));
1189
1190 if (json) {
1191 json_object *json_mac = json_object_new_object();
1192
1193 if (CHECK_FLAG(mac->flags, ZEBRA_MAC_LOCAL)) {
1194 struct zebra_ns *zns;
1195 struct interface *ifp;
1196 ifindex_t ifindex;
1197
1198 ifindex = mac->fwd_info.local.ifindex;
1199 zns = zebra_ns_lookup(NS_DEFAULT);
1200 ifp = if_lookup_by_index_per_ns(zns, ifindex);
1201 if (!ifp)
1202 return;
1203 json_object_string_add(json_mac, "type", "local");
1204 json_object_string_add(json_mac, "intf", ifp->name);
1205 json_object_int_add(json_mac, "ifindex", ifindex);
1206 if (mac->fwd_info.local.vid)
1207 json_object_int_add(json_mac, "vlan",
1208 mac->fwd_info.local.vid);
1209 } else if (CHECK_FLAG(mac->flags, ZEBRA_MAC_REMOTE)) {
1210 json_object_string_add(json_mac, "type", "remote");
1211 json_object_string_add(
1212 json_mac, "remoteVtep",
1213 inet_ntoa(mac->fwd_info.r_vtep_ip));
1214 } else if (CHECK_FLAG(mac->flags, ZEBRA_MAC_AUTO))
1215 json_object_string_add(json_mac, "type", "auto");
1216
1217 if (CHECK_FLAG(mac->flags, ZEBRA_MAC_STICKY))
1218 json_object_boolean_true_add(json_mac, "stickyMac");
1219
1220 if (CHECK_FLAG(mac->flags, ZEBRA_MAC_DEF_GW))
1221 json_object_boolean_true_add(json_mac,
1222 "defaultGateway");
1223
1224 if (CHECK_FLAG(mac->flags, ZEBRA_MAC_REMOTE_DEF_GW))
1225 json_object_boolean_true_add(json_mac,
1226 "remoteGatewayMac");
1227
1228 json_object_int_add(json_mac, "localSequence", mac->loc_seq);
1229 json_object_int_add(json_mac, "remoteSequence", mac->rem_seq);
1230
1231 json_object_int_add(json_mac, "detectionCount", mac->dad_count);
1232 if (CHECK_FLAG(mac->flags, ZEBRA_MAC_DUPLICATE))
1233 json_object_boolean_true_add(json_mac, "isDuplicate");
1234 else
1235 json_object_boolean_false_add(json_mac, "isDuplicate");
1236
1237 /* print all the associated neigh */
1238 if (!listcount(mac->neigh_list))
1239 json_object_string_add(json_mac, "neighbors", "none");
1240 else {
1241 json_object *json_active_nbrs = json_object_new_array();
1242 json_object *json_inactive_nbrs =
1243 json_object_new_array();
1244 json_object *json_nbrs = json_object_new_object();
1245
1246 for (ALL_LIST_ELEMENTS_RO(mac->neigh_list, node, n)) {
1247 if (IS_ZEBRA_NEIGH_ACTIVE(n))
1248 json_object_array_add(
1249 json_active_nbrs,
1250 json_object_new_string(
1251 ipaddr2str(
1252 &n->ip, buf2,
1253 sizeof(buf2))));
1254 else
1255 json_object_array_add(
1256 json_inactive_nbrs,
1257 json_object_new_string(
1258 ipaddr2str(
1259 &n->ip, buf2,
1260 sizeof(buf2))));
1261 }
1262
1263 json_object_object_add(json_nbrs, "active",
1264 json_active_nbrs);
1265 json_object_object_add(json_nbrs, "inactive",
1266 json_inactive_nbrs);
1267 json_object_object_add(json_mac, "neighbors",
1268 json_nbrs);
1269 }
1270
1271 json_object_object_add(json, buf1, json_mac);
1272 } else {
1273 vty_out(vty, "MAC: %s\n", buf1);
1274
1275 if (CHECK_FLAG(mac->flags, ZEBRA_MAC_LOCAL)) {
1276 struct zebra_ns *zns;
1277 struct interface *ifp;
1278 ifindex_t ifindex;
1279
1280 ifindex = mac->fwd_info.local.ifindex;
1281 zns = zebra_ns_lookup(NS_DEFAULT);
1282 ifp = if_lookup_by_index_per_ns(zns, ifindex);
1283 if (!ifp)
1284 return;
1285 vty_out(vty, " Intf: %s(%u)", ifp->name, ifindex);
1286 if (mac->fwd_info.local.vid)
1287 vty_out(vty, " VLAN: %u",
1288 mac->fwd_info.local.vid);
1289 } else if (CHECK_FLAG(mac->flags, ZEBRA_MAC_REMOTE)) {
1290 vty_out(vty, " Remote VTEP: %s",
1291 inet_ntoa(mac->fwd_info.r_vtep_ip));
1292 } else if (CHECK_FLAG(mac->flags, ZEBRA_MAC_AUTO)) {
1293 vty_out(vty, " Auto Mac ");
1294 }
1295
1296 if (CHECK_FLAG(mac->flags, ZEBRA_MAC_STICKY))
1297 vty_out(vty, " Sticky Mac ");
1298
1299 if (CHECK_FLAG(mac->flags, ZEBRA_MAC_DEF_GW))
1300 vty_out(vty, " Default-gateway Mac ");
1301
1302 if (CHECK_FLAG(mac->flags, ZEBRA_MAC_REMOTE_DEF_GW))
1303 vty_out(vty, " Remote-gateway Mac ");
1304
1305 vty_out(vty, "\n");
1306 vty_out(vty, " Local Seq: %u Remote Seq: %u", mac->loc_seq,
1307 mac->rem_seq);
1308 vty_out(vty, "\n");
1309
1310 if (CHECK_FLAG(mac->flags, ZEBRA_MAC_DUPLICATE)) {
1311 vty_out(vty, " Duplicate, detected at %s",
1312 time_to_string(mac->dad_dup_detect_time,
1313 timebuf));
1314 } else if (mac->dad_count) {
1315 monotime_since(&mac->detect_start_time,
1316 &detect_start_time);
1317 if (detect_start_time.tv_sec <= zvrf->dad_time) {
1318 time_to_string(mac->detect_start_time.tv_sec,
1319 timebuf);
1320 vty_out(vty,
1321 " Duplicate detection started at %s, detection count %u\n",
1322 timebuf, mac->dad_count);
1323 }
1324 }
1325
1326 /* print all the associated neigh */
1327 vty_out(vty, " Neighbors:\n");
1328 if (!listcount(mac->neigh_list))
1329 vty_out(vty, " No Neighbors\n");
1330 else {
1331 for (ALL_LIST_ELEMENTS_RO(mac->neigh_list, node, n)) {
1332 vty_out(vty, " %s %s\n",
1333 ipaddr2str(&n->ip, buf2, sizeof(buf2)),
1334 (IS_ZEBRA_NEIGH_ACTIVE(n)
1335 ? "Active"
1336 : "Inactive"));
1337 }
1338 }
1339
1340 vty_out(vty, "\n");
1341 }
1342 }
1343
1344 /*
1345 * Print MAC hash entry - called for display of all MACs.
1346 */
1347 static void zvni_print_mac_hash(struct hash_bucket *bucket, void *ctxt)
1348 {
1349 struct vty *vty;
1350 json_object *json_mac_hdr = NULL, *json_mac = NULL;
1351 zebra_mac_t *mac;
1352 char buf1[ETHER_ADDR_STRLEN];
1353 struct mac_walk_ctx *wctx = ctxt;
1354
1355 vty = wctx->vty;
1356 json_mac_hdr = wctx->json;
1357 mac = (zebra_mac_t *)bucket->data;
1358
1359 prefix_mac2str(&mac->macaddr, buf1, sizeof(buf1));
1360
1361 if (json_mac_hdr)
1362 json_mac = json_object_new_object();
1363
1364 if (CHECK_FLAG(mac->flags, ZEBRA_MAC_LOCAL)) {
1365 struct zebra_ns *zns;
1366 ifindex_t ifindex;
1367 struct interface *ifp;
1368 vlanid_t vid;
1369
1370 if (wctx->flags & SHOW_REMOTE_MAC_FROM_VTEP)
1371 return;
1372
1373 zns = zebra_ns_lookup(NS_DEFAULT);
1374 ifindex = mac->fwd_info.local.ifindex;
1375 ifp = if_lookup_by_index_per_ns(zns, ifindex);
1376 if (!ifp) // unexpected
1377 return;
1378 vid = mac->fwd_info.local.vid;
1379 if (json_mac_hdr == NULL)
1380 vty_out(vty, "%-17s %-6s %-21s", buf1, "local",
1381 ifp->name);
1382 else {
1383 json_object_string_add(json_mac, "type", "local");
1384 json_object_string_add(json_mac, "intf", ifp->name);
1385 }
1386 if (vid) {
1387 if (json_mac_hdr == NULL)
1388 vty_out(vty, " %-5u", vid);
1389 else
1390 json_object_int_add(json_mac, "vlan", vid);
1391 } else /* No vid? fill out the space */
1392 if (json_mac_hdr == NULL)
1393 vty_out(vty, " %-5s", "");
1394 if (json_mac_hdr == NULL) {
1395 vty_out(vty, " %u/%u", mac->loc_seq, mac->rem_seq);
1396 vty_out(vty, "\n");
1397 } else {
1398 json_object_int_add(json_mac, "localSequence",
1399 mac->loc_seq);
1400 json_object_int_add(json_mac, "remoteSequence",
1401 mac->rem_seq);
1402 json_object_int_add(json_mac, "detectionCount",
1403 mac->dad_count);
1404 if (CHECK_FLAG(mac->flags, ZEBRA_MAC_DUPLICATE))
1405 json_object_boolean_true_add(json_mac,
1406 "isDuplicate");
1407 else
1408 json_object_boolean_false_add(json_mac,
1409 "isDuplicate");
1410 json_object_object_add(json_mac_hdr, buf1, json_mac);
1411 }
1412
1413 wctx->count++;
1414
1415 } else if (CHECK_FLAG(mac->flags, ZEBRA_MAC_REMOTE)) {
1416
1417 if ((wctx->flags & SHOW_REMOTE_MAC_FROM_VTEP) &&
1418 !IPV4_ADDR_SAME(&mac->fwd_info.r_vtep_ip,
1419 &wctx->r_vtep_ip))
1420 return;
1421
1422 if (json_mac_hdr == NULL) {
1423 if ((wctx->flags & SHOW_REMOTE_MAC_FROM_VTEP) &&
1424 (wctx->count == 0)) {
1425 vty_out(vty, "\nVNI %u\n\n", wctx->zvni->vni);
1426 vty_out(vty, "%-17s %-6s %-21s %-5s %s\n",
1427 "MAC", "Type", "Intf/Remote VTEP",
1428 "VLAN", "Seq #'s");
1429 }
1430 vty_out(vty, "%-17s %-6s %-21s %-5s %u/%u\n", buf1,
1431 "remote", inet_ntoa(mac->fwd_info.r_vtep_ip),
1432 "", mac->loc_seq, mac->rem_seq);
1433 } else {
1434 json_object_string_add(json_mac, "type", "remote");
1435 json_object_string_add(json_mac, "remoteVtep",
1436 inet_ntoa(mac->fwd_info.r_vtep_ip));
1437 json_object_object_add(json_mac_hdr, buf1, json_mac);
1438 json_object_int_add(json_mac, "localSequence",
1439 mac->loc_seq);
1440 json_object_int_add(json_mac, "remoteSequence",
1441 mac->rem_seq);
1442 json_object_int_add(json_mac, "detectionCount",
1443 mac->dad_count);
1444 if (CHECK_FLAG(mac->flags, ZEBRA_MAC_DUPLICATE))
1445 json_object_boolean_true_add(json_mac,
1446 "isDuplicate");
1447 else
1448 json_object_boolean_false_add(json_mac,
1449 "isDuplicate");
1450
1451 }
1452
1453 wctx->count++;
1454 }
1455 }
1456
1457 /* Print Duplicate MAC */
1458 static void zvni_print_dad_mac_hash(struct hash_bucket *bucket, void *ctxt)
1459 {
1460 zebra_mac_t *mac;
1461
1462 mac = (zebra_mac_t *)bucket->data;
1463 if (!mac)
1464 return;
1465
1466 if (CHECK_FLAG(mac->flags, ZEBRA_MAC_DUPLICATE))
1467 zvni_print_mac_hash(bucket, ctxt);
1468 }
1469
1470 /*
1471 * Print MAC hash entry in detail - called for display of all MACs.
1472 */
1473 static void zvni_print_mac_hash_detail(struct hash_bucket *bucket, void *ctxt)
1474 {
1475 struct vty *vty;
1476 json_object *json_mac_hdr = NULL;
1477 zebra_mac_t *mac;
1478 struct mac_walk_ctx *wctx = ctxt;
1479 char buf1[ETHER_ADDR_STRLEN];
1480
1481 vty = wctx->vty;
1482 json_mac_hdr = wctx->json;
1483 mac = (zebra_mac_t *)bucket->data;
1484 if (!mac)
1485 return;
1486
1487 wctx->count++;
1488 prefix_mac2str(&mac->macaddr, buf1, sizeof(buf1));
1489
1490 zvni_print_mac(mac, vty, json_mac_hdr);
1491 }
1492
1493 /* Print Duplicate MAC in detail */
1494 static void zvni_print_dad_mac_hash_detail(struct hash_bucket *bucket,
1495 void *ctxt)
1496 {
1497 zebra_mac_t *mac;
1498
1499 mac = (zebra_mac_t *)bucket->data;
1500 if (!mac)
1501 return;
1502
1503 if (CHECK_FLAG(mac->flags, ZEBRA_MAC_DUPLICATE))
1504 zvni_print_mac_hash_detail(bucket, ctxt);
1505 }
1506
1507 /*
1508 * Print MACs for all VNI.
1509 */
1510 static void zvni_print_mac_hash_all_vni(struct hash_bucket *bucket, void *ctxt)
1511 {
1512 struct vty *vty;
1513 json_object *json = NULL, *json_vni = NULL;
1514 json_object *json_mac = NULL;
1515 zebra_vni_t *zvni;
1516 uint32_t num_macs;
1517 struct mac_walk_ctx *wctx = ctxt;
1518 char vni_str[VNI_STR_LEN];
1519
1520 vty = (struct vty *)wctx->vty;
1521 json = (struct json_object *)wctx->json;
1522
1523 zvni = (zebra_vni_t *)bucket->data;
1524 wctx->zvni = zvni;
1525
1526 /*We are iterating over a new VNI, set the count to 0*/
1527 wctx->count = 0;
1528
1529 num_macs = num_valid_macs(zvni);
1530 if (!num_macs)
1531 return;
1532
1533 if (wctx->print_dup)
1534 num_macs = num_dup_detected_macs(zvni);
1535
1536 if (json) {
1537 json_vni = json_object_new_object();
1538 json_mac = json_object_new_object();
1539 snprintf(vni_str, VNI_STR_LEN, "%u", zvni->vni);
1540 }
1541
1542 if (!CHECK_FLAG(wctx->flags, SHOW_REMOTE_MAC_FROM_VTEP)) {
1543 if (json == NULL) {
1544 vty_out(vty, "\nVNI %u #MACs (local and remote) %u\n\n",
1545 zvni->vni, num_macs);
1546 vty_out(vty, "%-17s %-6s %-21s %-5s %s\n", "MAC",
1547 "Type", "Intf/Remote VTEP", "VLAN", "Seq #'s");
1548 } else
1549 json_object_int_add(json_vni, "numMacs", num_macs);
1550 }
1551
1552 if (!num_macs) {
1553 if (json) {
1554 json_object_int_add(json_vni, "numMacs", num_macs);
1555 json_object_object_add(json, vni_str, json_vni);
1556 }
1557 return;
1558 }
1559
1560 /* assign per-vni to wctx->json object to fill macs
1561 * under the vni. Re-assign primary json object to fill
1562 * next vni information.
1563 */
1564 wctx->json = json_mac;
1565 if (wctx->print_dup)
1566 hash_iterate(zvni->mac_table, zvni_print_dad_mac_hash, wctx);
1567 else
1568 hash_iterate(zvni->mac_table, zvni_print_mac_hash, wctx);
1569 wctx->json = json;
1570 if (json) {
1571 if (wctx->count)
1572 json_object_object_add(json_vni, "macs", json_mac);
1573 json_object_object_add(json, vni_str, json_vni);
1574 }
1575 }
1576
1577 /*
1578 * Print MACs in detail for all VNI.
1579 */
1580 static void zvni_print_mac_hash_all_vni_detail(struct hash_bucket *bucket,
1581 void *ctxt)
1582 {
1583 struct vty *vty;
1584 json_object *json = NULL, *json_vni = NULL;
1585 json_object *json_mac = NULL;
1586 zebra_vni_t *zvni;
1587 uint32_t num_macs;
1588 struct mac_walk_ctx *wctx = ctxt;
1589 char vni_str[VNI_STR_LEN];
1590
1591 vty = (struct vty *)wctx->vty;
1592 json = (struct json_object *)wctx->json;
1593
1594 zvni = (zebra_vni_t *)bucket->data;
1595 if (!zvni) {
1596 if (json)
1597 vty_out(vty, "{}\n");
1598 return;
1599 }
1600 wctx->zvni = zvni;
1601
1602 /*We are iterating over a new VNI, set the count to 0*/
1603 wctx->count = 0;
1604
1605 num_macs = num_valid_macs(zvni);
1606 if (!num_macs)
1607 return;
1608
1609 if (wctx->print_dup && (num_dup_detected_macs(zvni) == 0))
1610 return;
1611
1612 if (json) {
1613 json_vni = json_object_new_object();
1614 json_mac = json_object_new_object();
1615 snprintf(vni_str, VNI_STR_LEN, "%u", zvni->vni);
1616 }
1617
1618 if (!CHECK_FLAG(wctx->flags, SHOW_REMOTE_MAC_FROM_VTEP)) {
1619 if (json == NULL) {
1620 vty_out(vty, "\nVNI %u #MACs (local and remote) %u\n\n",
1621 zvni->vni, num_macs);
1622 } else
1623 json_object_int_add(json_vni, "numMacs", num_macs);
1624 }
1625 /* assign per-vni to wctx->json object to fill macs
1626 * under the vni. Re-assign primary json object to fill
1627 * next vni information.
1628 */
1629 wctx->json = json_mac;
1630 if (wctx->print_dup)
1631 hash_iterate(zvni->mac_table, zvni_print_dad_mac_hash_detail,
1632 wctx);
1633 else
1634 hash_iterate(zvni->mac_table, zvni_print_mac_hash_detail, wctx);
1635 wctx->json = json;
1636 if (json) {
1637 if (wctx->count)
1638 json_object_object_add(json_vni, "macs", json_mac);
1639 json_object_object_add(json, vni_str, json_vni);
1640 }
1641 }
1642
1643 static void zl3vni_print_nh_hash(struct hash_bucket *bucket, void *ctx)
1644 {
1645 struct nh_walk_ctx *wctx = NULL;
1646 struct vty *vty = NULL;
1647 struct json_object *json_vni = NULL;
1648 struct json_object *json_nh = NULL;
1649 zebra_neigh_t *n = NULL;
1650 char buf1[ETHER_ADDR_STRLEN];
1651 char buf2[INET6_ADDRSTRLEN];
1652
1653 wctx = (struct nh_walk_ctx *)ctx;
1654 vty = wctx->vty;
1655 json_vni = wctx->json;
1656 if (json_vni)
1657 json_nh = json_object_new_object();
1658 n = (zebra_neigh_t *)bucket->data;
1659
1660 if (!json_vni) {
1661 vty_out(vty, "%-15s %-17s\n",
1662 ipaddr2str(&(n->ip), buf2, sizeof(buf2)),
1663 prefix_mac2str(&n->emac, buf1, sizeof(buf1)));
1664 } else {
1665 json_object_string_add(json_nh, "nexthopIp",
1666 ipaddr2str(&n->ip, buf2, sizeof(buf2)));
1667 json_object_string_add(
1668 json_nh, "routerMac",
1669 prefix_mac2str(&n->emac, buf1, sizeof(buf1)));
1670 json_object_object_add(json_vni,
1671 ipaddr2str(&(n->ip), buf2, sizeof(buf2)),
1672 json_nh);
1673 }
1674 }
1675
1676 static void zl3vni_print_nh_hash_all_vni(struct hash_bucket *bucket,
1677 void **args)
1678 {
1679 struct vty *vty = NULL;
1680 json_object *json = NULL;
1681 json_object *json_vni = NULL;
1682 zebra_l3vni_t *zl3vni = NULL;
1683 uint32_t num_nh = 0;
1684 struct nh_walk_ctx wctx;
1685 char vni_str[VNI_STR_LEN];
1686
1687 vty = (struct vty *)args[0];
1688 json = (struct json_object *)args[1];
1689
1690 zl3vni = (zebra_l3vni_t *)bucket->data;
1691
1692 num_nh = hashcount(zl3vni->nh_table);
1693 if (!num_nh)
1694 return;
1695
1696 if (json) {
1697 json_vni = json_object_new_object();
1698 snprintf(vni_str, VNI_STR_LEN, "%u", zl3vni->vni);
1699 }
1700
1701 if (json == NULL) {
1702 vty_out(vty, "\nVNI %u #Next-Hops %u\n\n", zl3vni->vni, num_nh);
1703 vty_out(vty, "%-15s %-17s\n", "IP", "RMAC");
1704 } else
1705 json_object_int_add(json_vni, "numNextHops", num_nh);
1706
1707 memset(&wctx, 0, sizeof(struct nh_walk_ctx));
1708 wctx.vty = vty;
1709 wctx.json = json_vni;
1710 hash_iterate(zl3vni->nh_table, zl3vni_print_nh_hash, &wctx);
1711 if (json)
1712 json_object_object_add(json, vni_str, json_vni);
1713 }
1714
1715 static void zl3vni_print_rmac_hash_all_vni(struct hash_bucket *bucket,
1716 void **args)
1717 {
1718 struct vty *vty = NULL;
1719 json_object *json = NULL;
1720 json_object *json_vni = NULL;
1721 zebra_l3vni_t *zl3vni = NULL;
1722 uint32_t num_rmacs;
1723 struct rmac_walk_ctx wctx;
1724 char vni_str[VNI_STR_LEN];
1725
1726 vty = (struct vty *)args[0];
1727 json = (struct json_object *)args[1];
1728
1729 zl3vni = (zebra_l3vni_t *)bucket->data;
1730
1731 num_rmacs = hashcount(zl3vni->rmac_table);
1732 if (!num_rmacs)
1733 return;
1734
1735 if (json) {
1736 json_vni = json_object_new_object();
1737 snprintf(vni_str, VNI_STR_LEN, "%u", zl3vni->vni);
1738 }
1739
1740 if (json == NULL) {
1741 vty_out(vty, "\nVNI %u #RMACs %u\n\n", zl3vni->vni, num_rmacs);
1742 vty_out(vty, "%-17s %-21s\n", "RMAC", "Remote VTEP");
1743 } else
1744 json_object_int_add(json_vni, "numRmacs", num_rmacs);
1745
1746 /* assign per-vni to wctx->json object to fill macs
1747 * under the vni. Re-assign primary json object to fill
1748 * next vni information.
1749 */
1750 memset(&wctx, 0, sizeof(struct rmac_walk_ctx));
1751 wctx.vty = vty;
1752 wctx.json = json_vni;
1753 hash_iterate(zl3vni->rmac_table, zl3vni_print_rmac_hash, &wctx);
1754 if (json)
1755 json_object_object_add(json, vni_str, json_vni);
1756 }
1757
1758 static void zl3vni_print_rmac_hash(struct hash_bucket *bucket, void *ctx)
1759 {
1760 zebra_mac_t *zrmac = NULL;
1761 struct rmac_walk_ctx *wctx = NULL;
1762 struct vty *vty = NULL;
1763 struct json_object *json = NULL;
1764 struct json_object *json_rmac = NULL;
1765 char buf[ETHER_ADDR_STRLEN];
1766
1767 wctx = (struct rmac_walk_ctx *)ctx;
1768 vty = wctx->vty;
1769 json = wctx->json;
1770 if (json)
1771 json_rmac = json_object_new_object();
1772 zrmac = (zebra_mac_t *)bucket->data;
1773
1774 if (!json) {
1775 vty_out(vty, "%-17s %-21s\n",
1776 prefix_mac2str(&zrmac->macaddr, buf, sizeof(buf)),
1777 inet_ntoa(zrmac->fwd_info.r_vtep_ip));
1778 } else {
1779 json_object_string_add(
1780 json_rmac, "routerMac",
1781 prefix_mac2str(&zrmac->macaddr, buf, sizeof(buf)));
1782 json_object_string_add(json_rmac, "vtepIp",
1783 inet_ntoa(zrmac->fwd_info.r_vtep_ip));
1784 json_object_object_add(
1785 json, prefix_mac2str(&zrmac->macaddr, buf, sizeof(buf)),
1786 json_rmac);
1787 }
1788 }
1789
1790 /* print a specific L3 VNI entry */
1791 static void zl3vni_print(zebra_l3vni_t *zl3vni, void **ctx)
1792 {
1793 char buf[ETHER_ADDR_STRLEN];
1794 struct vty *vty = NULL;
1795 json_object *json = NULL;
1796 zebra_vni_t *zvni = NULL;
1797 json_object *json_vni_list = NULL;
1798 struct listnode *node = NULL, *nnode = NULL;
1799
1800 vty = ctx[0];
1801 json = ctx[1];
1802
1803 if (!json) {
1804 vty_out(vty, "VNI: %u\n", zl3vni->vni);
1805 vty_out(vty, " Type: %s\n", "L3");
1806 vty_out(vty, " Tenant VRF: %s\n", zl3vni_vrf_name(zl3vni));
1807 vty_out(vty, " Local Vtep Ip: %s\n",
1808 inet_ntoa(zl3vni->local_vtep_ip));
1809 vty_out(vty, " Vxlan-Intf: %s\n",
1810 zl3vni_vxlan_if_name(zl3vni));
1811 vty_out(vty, " SVI-If: %s\n", zl3vni_svi_if_name(zl3vni));
1812 vty_out(vty, " State: %s\n", zl3vni_state2str(zl3vni));
1813 vty_out(vty, " VNI Filter: %s\n",
1814 CHECK_FLAG(zl3vni->filter, PREFIX_ROUTES_ONLY)
1815 ? "prefix-routes-only"
1816 : "none");
1817 vty_out(vty, " Router MAC: %s\n",
1818 zl3vni_rmac2str(zl3vni, buf, sizeof(buf)));
1819 vty_out(vty, " L2 VNIs: ");
1820 for (ALL_LIST_ELEMENTS(zl3vni->l2vnis, node, nnode, zvni))
1821 vty_out(vty, "%u ", zvni->vni);
1822 vty_out(vty, "\n");
1823 } else {
1824 json_vni_list = json_object_new_array();
1825 json_object_int_add(json, "vni", zl3vni->vni);
1826 json_object_string_add(json, "type", "L3");
1827 json_object_string_add(json, "localVtepIp",
1828 inet_ntoa(zl3vni->local_vtep_ip));
1829 json_object_string_add(json, "vxlanIntf",
1830 zl3vni_vxlan_if_name(zl3vni));
1831 json_object_string_add(json, "sviIntf",
1832 zl3vni_svi_if_name(zl3vni));
1833 json_object_string_add(json, "state", zl3vni_state2str(zl3vni));
1834 json_object_string_add(json, "vrf", zl3vni_vrf_name(zl3vni));
1835 json_object_string_add(
1836 json, "routerMac",
1837 zl3vni_rmac2str(zl3vni, buf, sizeof(buf)));
1838 json_object_string_add(
1839 json, "vniFilter",
1840 CHECK_FLAG(zl3vni->filter, PREFIX_ROUTES_ONLY)
1841 ? "prefix-routes-only"
1842 : "none");
1843 for (ALL_LIST_ELEMENTS(zl3vni->l2vnis, node, nnode, zvni)) {
1844 json_object_array_add(json_vni_list,
1845 json_object_new_int(zvni->vni));
1846 }
1847 json_object_object_add(json, "l2Vnis", json_vni_list);
1848 }
1849 }
1850
1851 /*
1852 * Print a specific VNI entry.
1853 */
1854 static void zvni_print(zebra_vni_t *zvni, void **ctxt)
1855 {
1856 struct vty *vty;
1857 zebra_vtep_t *zvtep;
1858 uint32_t num_macs;
1859 uint32_t num_neigh;
1860 json_object *json = NULL;
1861 json_object *json_vtep_list = NULL;
1862 json_object *json_ip_str = NULL;
1863
1864 vty = ctxt[0];
1865 json = ctxt[1];
1866
1867 if (json == NULL) {
1868 vty_out(vty, "VNI: %u\n", zvni->vni);
1869 vty_out(vty, " Type: %s\n", "L2");
1870 vty_out(vty, " Tenant VRF: %s\n", vrf_id_to_name(zvni->vrf_id));
1871 } else {
1872 json_object_int_add(json, "vni", zvni->vni);
1873 json_object_string_add(json, "type", "L2");
1874 json_object_string_add(json, "vrf",
1875 vrf_id_to_name(zvni->vrf_id));
1876 }
1877
1878 if (!zvni->vxlan_if) { // unexpected
1879 if (json == NULL)
1880 vty_out(vty, " VxLAN interface: unknown\n");
1881 return;
1882 }
1883 num_macs = num_valid_macs(zvni);
1884 num_neigh = hashcount(zvni->neigh_table);
1885 if (json == NULL) {
1886 vty_out(vty, " VxLAN interface: %s\n", zvni->vxlan_if->name);
1887 vty_out(vty, " VxLAN ifIndex: %u\n", zvni->vxlan_if->ifindex);
1888 vty_out(vty, " Local VTEP IP: %s\n",
1889 inet_ntoa(zvni->local_vtep_ip));
1890 vty_out(vty, " Mcast group: %s\n",
1891 inet_ntoa(zvni->mcast_grp));
1892 } else {
1893 json_object_string_add(json, "vxlanInterface",
1894 zvni->vxlan_if->name);
1895 json_object_int_add(json, "ifindex", zvni->vxlan_if->ifindex);
1896 json_object_string_add(json, "vtepIp",
1897 inet_ntoa(zvni->local_vtep_ip));
1898 json_object_string_add(json, "mcastGroup",
1899 inet_ntoa(zvni->mcast_grp));
1900 json_object_string_add(json, "advertiseGatewayMacip",
1901 zvni->advertise_gw_macip ? "Yes" : "No");
1902 json_object_int_add(json, "numMacs", num_macs);
1903 json_object_int_add(json, "numArpNd", num_neigh);
1904 }
1905 if (!zvni->vteps) {
1906 if (json == NULL)
1907 vty_out(vty, " No remote VTEPs known for this VNI\n");
1908 } else {
1909 if (json == NULL)
1910 vty_out(vty, " Remote VTEPs for this VNI:\n");
1911 else
1912 json_vtep_list = json_object_new_array();
1913 for (zvtep = zvni->vteps; zvtep; zvtep = zvtep->next) {
1914 const char *flood_str = lookup_msg(zvtep_flood_str,
1915 zvtep->flood_control,
1916 VXLAN_FLOOD_STR_DEFAULT);
1917
1918 if (json == NULL) {
1919 vty_out(vty, " %s flood: %s\n",
1920 inet_ntoa(zvtep->vtep_ip),
1921 flood_str);
1922 } else {
1923 json_ip_str = json_object_new_string(
1924 inet_ntoa(zvtep->vtep_ip));
1925 json_object_array_add(json_vtep_list,
1926 json_ip_str);
1927 }
1928 }
1929 if (json)
1930 json_object_object_add(json, "numRemoteVteps",
1931 json_vtep_list);
1932 }
1933 if (json == NULL) {
1934 vty_out(vty,
1935 " Number of MACs (local and remote) known for this VNI: %u\n",
1936 num_macs);
1937 vty_out(vty,
1938 " Number of ARPs (IPv4 and IPv6, local and remote) "
1939 "known for this VNI: %u\n",
1940 num_neigh);
1941 vty_out(vty, " Advertise-gw-macip: %s\n",
1942 zvni->advertise_gw_macip ? "Yes" : "No");
1943 }
1944 }
1945
1946 /* print a L3 VNI hash entry */
1947 static void zl3vni_print_hash(struct hash_bucket *bucket, void *ctx[])
1948 {
1949 struct vty *vty = NULL;
1950 json_object *json = NULL;
1951 json_object *json_vni = NULL;
1952 zebra_l3vni_t *zl3vni = NULL;
1953
1954 vty = (struct vty *)ctx[0];
1955 json = (json_object *)ctx[1];
1956
1957 zl3vni = (zebra_l3vni_t *)bucket->data;
1958
1959 if (!json) {
1960 vty_out(vty, "%-10u %-4s %-21s %-8lu %-8lu %-15s %-37s\n",
1961 zl3vni->vni, "L3", zl3vni_vxlan_if_name(zl3vni),
1962 hashcount(zl3vni->rmac_table),
1963 hashcount(zl3vni->nh_table), "n/a",
1964 zl3vni_vrf_name(zl3vni));
1965 } else {
1966 char vni_str[VNI_STR_LEN];
1967
1968 snprintf(vni_str, VNI_STR_LEN, "%u", zl3vni->vni);
1969 json_vni = json_object_new_object();
1970 json_object_int_add(json_vni, "vni", zl3vni->vni);
1971 json_object_string_add(json_vni, "vxlanIf",
1972 zl3vni_vxlan_if_name(zl3vni));
1973 json_object_int_add(json_vni, "numMacs",
1974 hashcount(zl3vni->rmac_table));
1975 json_object_int_add(json_vni, "numArpNd",
1976 hashcount(zl3vni->nh_table));
1977 json_object_string_add(json_vni, "numRemoteVteps", "n/a");
1978 json_object_string_add(json_vni, "type", "L3");
1979 json_object_string_add(json_vni, "tenantVrf",
1980 zl3vni_vrf_name(zl3vni));
1981 json_object_object_add(json, vni_str, json_vni);
1982 }
1983 }
1984
1985 /* Private Structure to pass callback data for hash iterator */
1986 struct zvni_evpn_show {
1987 struct vty *vty;
1988 json_object *json;
1989 struct zebra_vrf *zvrf;
1990 };
1991
1992 /* print a L3 VNI hash entry in detail*/
1993 static void zl3vni_print_hash_detail(struct hash_bucket *bucket, void *data)
1994 {
1995 struct vty *vty = NULL;
1996 zebra_l3vni_t *zl3vni = NULL;
1997 json_object *json = NULL;
1998 bool use_json = false;
1999 struct zvni_evpn_show *zes = data;
2000
2001 vty = zes->vty;
2002 json = zes->json;
2003
2004 if (json)
2005 use_json = true;
2006
2007 zl3vni = (zebra_l3vni_t *)bucket->data;
2008
2009 zebra_vxlan_print_vni(vty, zes->zvrf, zl3vni->vni, use_json);
2010 vty_out(vty, "\n");
2011 }
2012
2013
2014 /*
2015 * Print a VNI hash entry - called for display of all VNIs.
2016 */
2017 static void zvni_print_hash(struct hash_bucket *bucket, void *ctxt[])
2018 {
2019 struct vty *vty;
2020 zebra_vni_t *zvni;
2021 zebra_vtep_t *zvtep;
2022 uint32_t num_vteps = 0;
2023 uint32_t num_macs = 0;
2024 uint32_t num_neigh = 0;
2025 json_object *json = NULL;
2026 json_object *json_vni = NULL;
2027 json_object *json_ip_str = NULL;
2028 json_object *json_vtep_list = NULL;
2029
2030 vty = ctxt[0];
2031 json = ctxt[1];
2032
2033 zvni = (zebra_vni_t *)bucket->data;
2034
2035 zvtep = zvni->vteps;
2036 while (zvtep) {
2037 num_vteps++;
2038 zvtep = zvtep->next;
2039 }
2040
2041 num_macs = num_valid_macs(zvni);
2042 num_neigh = hashcount(zvni->neigh_table);
2043 if (json == NULL)
2044 vty_out(vty, "%-10u %-4s %-21s %-8u %-8u %-15u %-37s\n",
2045 zvni->vni, "L2",
2046 zvni->vxlan_if ? zvni->vxlan_if->name : "unknown",
2047 num_macs, num_neigh, num_vteps,
2048 vrf_id_to_name(zvni->vrf_id));
2049 else {
2050 char vni_str[VNI_STR_LEN];
2051 snprintf(vni_str, VNI_STR_LEN, "%u", zvni->vni);
2052 json_vni = json_object_new_object();
2053 json_object_int_add(json_vni, "vni", zvni->vni);
2054 json_object_string_add(json_vni, "type", "L2");
2055 json_object_string_add(json_vni, "vxlanIf",
2056 zvni->vxlan_if ? zvni->vxlan_if->name
2057 : "unknown");
2058 json_object_int_add(json_vni, "numMacs", num_macs);
2059 json_object_int_add(json_vni, "numArpNd", num_neigh);
2060 json_object_int_add(json_vni, "numRemoteVteps", num_vteps);
2061 json_object_string_add(json_vni, "tenantVrf",
2062 vrf_id_to_name(zvni->vrf_id));
2063 if (num_vteps) {
2064 json_vtep_list = json_object_new_array();
2065 for (zvtep = zvni->vteps; zvtep; zvtep = zvtep->next) {
2066 json_ip_str = json_object_new_string(
2067 inet_ntoa(zvtep->vtep_ip));
2068 json_object_array_add(json_vtep_list,
2069 json_ip_str);
2070 }
2071 json_object_object_add(json_vni, "remoteVteps",
2072 json_vtep_list);
2073 }
2074 json_object_object_add(json, vni_str, json_vni);
2075 }
2076 }
2077
2078 /*
2079 * Print a VNI hash entry in detail - called for display of all VNIs.
2080 */
2081 static void zvni_print_hash_detail(struct hash_bucket *bucket, void *data)
2082 {
2083 struct vty *vty;
2084 zebra_vni_t *zvni;
2085 json_object *json = NULL;
2086 bool use_json = false;
2087 struct zvni_evpn_show *zes = data;
2088
2089 vty = zes->vty;
2090 json = zes->json;
2091
2092 if (json)
2093 use_json = true;
2094
2095 zvni = (zebra_vni_t *)bucket->data;
2096
2097 zebra_vxlan_print_vni(vty, zes->zvrf, zvni->vni, use_json);
2098 vty_out(vty, "\n");
2099 }
2100
2101 /*
2102 * Inform BGP about local MACIP.
2103 */
2104 static int zvni_macip_send_msg_to_client(vni_t vni, struct ethaddr *macaddr,
2105 struct ipaddr *ip, uint8_t flags,
2106 uint32_t seq, int state, uint16_t cmd)
2107 {
2108 char buf[ETHER_ADDR_STRLEN];
2109 char buf2[INET6_ADDRSTRLEN];
2110 int ipa_len;
2111 struct zserv *client = NULL;
2112 struct stream *s = NULL;
2113
2114 client = zserv_find_client(ZEBRA_ROUTE_BGP, 0);
2115 /* BGP may not be running. */
2116 if (!client)
2117 return 0;
2118
2119 s = stream_new(ZEBRA_MAX_PACKET_SIZ);
2120
2121 zclient_create_header(s, cmd, zebra_vrf_get_evpn_id());
2122 stream_putl(s, vni);
2123 stream_put(s, macaddr->octet, ETH_ALEN);
2124 if (ip) {
2125 ipa_len = 0;
2126 if (IS_IPADDR_V4(ip))
2127 ipa_len = IPV4_MAX_BYTELEN;
2128 else if (IS_IPADDR_V6(ip))
2129 ipa_len = IPV6_MAX_BYTELEN;
2130
2131 stream_putl(s, ipa_len); /* IP address length */
2132 if (ipa_len)
2133 stream_put(s, &ip->ip.addr, ipa_len); /* IP address */
2134 } else
2135 stream_putl(s, 0); /* Just MAC. */
2136
2137 if (cmd == ZEBRA_MACIP_ADD) {
2138 stream_putc(s, flags); /* sticky mac/gateway mac */
2139 stream_putl(s, seq); /* sequence number */
2140 } else {
2141 stream_putl(s, state); /* state - active/inactive */
2142 }
2143
2144
2145 /* Write packet size. */
2146 stream_putw_at(s, 0, stream_get_endp(s));
2147
2148 if (IS_ZEBRA_DEBUG_VXLAN)
2149 zlog_debug(
2150 "Send MACIP %s flags 0x%x MAC %s IP %s seq %u L2-VNI %u to %s",
2151 (cmd == ZEBRA_MACIP_ADD) ? "Add" : "Del", flags,
2152 prefix_mac2str(macaddr, buf, sizeof(buf)),
2153 ipaddr2str(ip, buf2, sizeof(buf2)), seq, vni,
2154 zebra_route_string(client->proto));
2155
2156 if (cmd == ZEBRA_MACIP_ADD)
2157 client->macipadd_cnt++;
2158 else
2159 client->macipdel_cnt++;
2160
2161 return zserv_send_message(client, s);
2162 }
2163
2164 /*
2165 * Make hash key for neighbors.
2166 */
2167 static unsigned int neigh_hash_keymake(const void *p)
2168 {
2169 const zebra_neigh_t *n = p;
2170 const struct ipaddr *ip = &n->ip;
2171
2172 if (IS_IPADDR_V4(ip))
2173 return jhash_1word(ip->ipaddr_v4.s_addr, 0);
2174
2175 return jhash2(ip->ipaddr_v6.s6_addr32,
2176 array_size(ip->ipaddr_v6.s6_addr32), 0);
2177 }
2178
2179 /*
2180 * Compare two neighbor hash structures.
2181 */
2182 static bool neigh_cmp(const void *p1, const void *p2)
2183 {
2184 const zebra_neigh_t *n1 = p1;
2185 const zebra_neigh_t *n2 = p2;
2186
2187 if (n1 == NULL && n2 == NULL)
2188 return true;
2189
2190 if (n1 == NULL || n2 == NULL)
2191 return false;
2192
2193 return (memcmp(&n1->ip, &n2->ip, sizeof(struct ipaddr)) == 0);
2194 }
2195
2196 static int neigh_list_cmp(void *p1, void *p2)
2197 {
2198 const zebra_neigh_t *n1 = p1;
2199 const zebra_neigh_t *n2 = p2;
2200
2201 return memcmp(&n1->ip, &n2->ip, sizeof(struct ipaddr));
2202 }
2203
2204 /*
2205 * Callback to allocate neighbor hash entry.
2206 */
2207 static void *zvni_neigh_alloc(void *p)
2208 {
2209 const zebra_neigh_t *tmp_n = p;
2210 zebra_neigh_t *n;
2211
2212 n = XCALLOC(MTYPE_NEIGH, sizeof(zebra_neigh_t));
2213 *n = *tmp_n;
2214
2215 return ((void *)n);
2216 }
2217
2218 /*
2219 * Add neighbor entry.
2220 */
2221 static zebra_neigh_t *zvni_neigh_add(zebra_vni_t *zvni, struct ipaddr *ip,
2222 struct ethaddr *mac)
2223 {
2224 zebra_neigh_t tmp_n;
2225 zebra_neigh_t *n = NULL;
2226 zebra_mac_t *zmac = NULL;
2227
2228 memset(&tmp_n, 0, sizeof(zebra_neigh_t));
2229 memcpy(&tmp_n.ip, ip, sizeof(struct ipaddr));
2230 n = hash_get(zvni->neigh_table, &tmp_n, zvni_neigh_alloc);
2231 assert(n);
2232
2233 memcpy(&n->emac, mac, ETH_ALEN);
2234 n->state = ZEBRA_NEIGH_INACTIVE;
2235 n->zvni = zvni;
2236 n->dad_ip_auto_recovery_timer = NULL;
2237
2238 /* Associate the neigh to mac */
2239 zmac = zvni_mac_lookup(zvni, mac);
2240 if (zmac)
2241 listnode_add_sort(zmac->neigh_list, n);
2242
2243 return n;
2244 }
2245
2246 /*
2247 * Delete neighbor entry.
2248 */
2249 static int zvni_neigh_del(zebra_vni_t *zvni, zebra_neigh_t *n)
2250 {
2251 zebra_neigh_t *tmp_n;
2252 zebra_mac_t *zmac = NULL;
2253
2254 zmac = zvni_mac_lookup(zvni, &n->emac);
2255 if (zmac)
2256 listnode_delete(zmac->neigh_list, n);
2257
2258 /* Cancel auto recovery */
2259 THREAD_OFF(n->dad_ip_auto_recovery_timer);
2260
2261 /* Free the VNI hash entry and allocated memory. */
2262 tmp_n = hash_release(zvni->neigh_table, n);
2263 XFREE(MTYPE_NEIGH, tmp_n);
2264
2265 return 0;
2266 }
2267
2268 /*
2269 * Free neighbor hash entry (callback)
2270 */
2271 static void zvni_neigh_del_hash_entry(struct hash_bucket *bucket, void *arg)
2272 {
2273 struct neigh_walk_ctx *wctx = arg;
2274 zebra_neigh_t *n = bucket->data;
2275
2276 if (((wctx->flags & DEL_LOCAL_NEIGH) && (n->flags & ZEBRA_NEIGH_LOCAL))
2277 || ((wctx->flags & DEL_REMOTE_NEIGH)
2278 && (n->flags & ZEBRA_NEIGH_REMOTE))
2279 || ((wctx->flags & DEL_REMOTE_NEIGH_FROM_VTEP)
2280 && (n->flags & ZEBRA_NEIGH_REMOTE)
2281 && IPV4_ADDR_SAME(&n->r_vtep_ip, &wctx->r_vtep_ip))) {
2282 if (wctx->upd_client && (n->flags & ZEBRA_NEIGH_LOCAL))
2283 zvni_neigh_send_del_to_client(wctx->zvni->vni, &n->ip,
2284 &n->emac, 0, n->state);
2285
2286 if (wctx->uninstall)
2287 zvni_neigh_uninstall(wctx->zvni, n);
2288
2289 zvni_neigh_del(wctx->zvni, n);
2290 }
2291
2292 return;
2293 }
2294
2295 /*
2296 * Delete all neighbor entries from specific VTEP for a particular VNI.
2297 */
2298 static void zvni_neigh_del_from_vtep(zebra_vni_t *zvni, int uninstall,
2299 struct in_addr *r_vtep_ip)
2300 {
2301 struct neigh_walk_ctx wctx;
2302
2303 if (!zvni->neigh_table)
2304 return;
2305
2306 memset(&wctx, 0, sizeof(struct neigh_walk_ctx));
2307 wctx.zvni = zvni;
2308 wctx.uninstall = uninstall;
2309 wctx.flags = DEL_REMOTE_NEIGH_FROM_VTEP;
2310 wctx.r_vtep_ip = *r_vtep_ip;
2311
2312 hash_iterate(zvni->neigh_table, zvni_neigh_del_hash_entry, &wctx);
2313 }
2314
2315 /*
2316 * Delete all neighbor entries for this VNI.
2317 */
2318 static void zvni_neigh_del_all(zebra_vni_t *zvni, int uninstall, int upd_client,
2319 uint32_t flags)
2320 {
2321 struct neigh_walk_ctx wctx;
2322
2323 if (!zvni->neigh_table)
2324 return;
2325
2326 memset(&wctx, 0, sizeof(struct neigh_walk_ctx));
2327 wctx.zvni = zvni;
2328 wctx.uninstall = uninstall;
2329 wctx.upd_client = upd_client;
2330 wctx.flags = flags;
2331
2332 hash_iterate(zvni->neigh_table, zvni_neigh_del_hash_entry, &wctx);
2333 }
2334
2335 /*
2336 * Look up neighbor hash entry.
2337 */
2338 static zebra_neigh_t *zvni_neigh_lookup(zebra_vni_t *zvni, struct ipaddr *ip)
2339 {
2340 zebra_neigh_t tmp;
2341 zebra_neigh_t *n;
2342
2343 memset(&tmp, 0, sizeof(tmp));
2344 memcpy(&tmp.ip, ip, sizeof(struct ipaddr));
2345 n = hash_lookup(zvni->neigh_table, &tmp);
2346
2347 return n;
2348 }
2349
2350 /*
2351 * Process all neighbors associated with a MAC upon the MAC being learnt
2352 * locally or undergoing any other change (such as sequence number).
2353 */
2354 static void zvni_process_neigh_on_local_mac_change(zebra_vni_t *zvni,
2355 zebra_mac_t *zmac,
2356 bool seq_change)
2357 {
2358 zebra_neigh_t *n = NULL;
2359 struct listnode *node = NULL;
2360 struct zebra_vrf *zvrf = NULL;
2361 char buf[ETHER_ADDR_STRLEN];
2362
2363 zvrf = vrf_info_lookup(zvni->vxlan_if->vrf_id);
2364
2365 if (IS_ZEBRA_DEBUG_VXLAN)
2366 zlog_debug("Processing neighbors on local MAC %s %s, VNI %u",
2367 prefix_mac2str(&zmac->macaddr, buf, sizeof(buf)),
2368 seq_change ? "CHANGE" : "ADD", zvni->vni);
2369
2370 /* Walk all neighbors and mark any inactive local neighbors as
2371 * active and/or update sequence number upon a move, and inform BGP.
2372 * The action for remote neighbors is TBD.
2373 * NOTE: We can't simply uninstall remote neighbors as the kernel may
2374 * accidentally end up deleting a just-learnt local neighbor.
2375 */
2376 for (ALL_LIST_ELEMENTS_RO(zmac->neigh_list, node, n)) {
2377 if (CHECK_FLAG(n->flags, ZEBRA_NEIGH_LOCAL)) {
2378 if (IS_ZEBRA_NEIGH_INACTIVE(n) || seq_change) {
2379 ZEBRA_NEIGH_SET_ACTIVE(n);
2380 n->loc_seq = zmac->loc_seq;
2381 if (!(zvrf->dup_addr_detect &&
2382 zvrf->dad_freeze && !!CHECK_FLAG(n->flags,
2383 ZEBRA_NEIGH_DUPLICATE)))
2384 zvni_neigh_send_add_to_client(
2385 zvni->vni, &n->ip, &n->emac,
2386 n->flags, n->loc_seq);
2387 }
2388 }
2389 }
2390 }
2391
2392 /*
2393 * Process all neighbors associated with a local MAC upon the MAC being
2394 * deleted.
2395 */
2396 static void zvni_process_neigh_on_local_mac_del(zebra_vni_t *zvni,
2397 zebra_mac_t *zmac)
2398 {
2399 zebra_neigh_t *n = NULL;
2400 struct listnode *node = NULL;
2401 char buf[ETHER_ADDR_STRLEN];
2402
2403 if (IS_ZEBRA_DEBUG_VXLAN)
2404 zlog_debug("Processing neighbors on local MAC %s DEL, VNI %u",
2405 prefix_mac2str(&zmac->macaddr, buf, sizeof(buf)),
2406 zvni->vni);
2407
2408 /* Walk all local neighbors and mark as inactive and inform
2409 * BGP, if needed.
2410 * TBD: There is currently no handling for remote neighbors. We
2411 * don't expect them to exist, if they do, do we install the MAC
2412 * as a remote MAC and the neighbor as remote?
2413 */
2414 for (ALL_LIST_ELEMENTS_RO(zmac->neigh_list, node, n)) {
2415 if (CHECK_FLAG(n->flags, ZEBRA_NEIGH_LOCAL)) {
2416 if (IS_ZEBRA_NEIGH_ACTIVE(n)) {
2417 ZEBRA_NEIGH_SET_INACTIVE(n);
2418 n->loc_seq = 0;
2419 zvni_neigh_send_del_to_client(zvni->vni, &n->ip,
2420 &n->emac, 0, ZEBRA_NEIGH_ACTIVE);
2421 }
2422 }
2423 }
2424 }
2425
2426 /*
2427 * Process all neighbors associated with a MAC upon the MAC being remotely
2428 * learnt.
2429 */
2430 static void zvni_process_neigh_on_remote_mac_add(zebra_vni_t *zvni,
2431 zebra_mac_t *zmac)
2432 {
2433 zebra_neigh_t *n = NULL;
2434 struct listnode *node = NULL;
2435 char buf[ETHER_ADDR_STRLEN];
2436
2437 if (IS_ZEBRA_DEBUG_VXLAN)
2438 zlog_debug("Processing neighbors on remote MAC %s ADD, VNI %u",
2439 prefix_mac2str(&zmac->macaddr, buf, sizeof(buf)),
2440 zvni->vni);
2441
2442 /* Walk all local neighbors and mark as inactive and inform
2443 * BGP, if needed.
2444 */
2445 for (ALL_LIST_ELEMENTS_RO(zmac->neigh_list, node, n)) {
2446 if (CHECK_FLAG(n->flags, ZEBRA_NEIGH_LOCAL)) {
2447 if (IS_ZEBRA_NEIGH_ACTIVE(n)) {
2448 ZEBRA_NEIGH_SET_INACTIVE(n);
2449 n->loc_seq = 0;
2450 zvni_neigh_send_del_to_client(zvni->vni, &n->ip,
2451 &n->emac, 0, ZEBRA_NEIGH_ACTIVE);
2452 }
2453 }
2454 }
2455 }
2456
2457 /*
2458 * Process all neighbors associated with a remote MAC upon the MAC being
2459 * deleted.
2460 */
2461 static void zvni_process_neigh_on_remote_mac_del(zebra_vni_t *zvni,
2462 zebra_mac_t *zmac)
2463 {
2464 /* NOTE: Currently a NO-OP. */
2465 }
2466
2467 static void zvni_probe_neigh_on_mac_add(zebra_vni_t *zvni, zebra_mac_t *zmac)
2468 {
2469 zebra_neigh_t *nbr = NULL;
2470 struct listnode *node = NULL;
2471
2472 for (ALL_LIST_ELEMENTS_RO(zmac->neigh_list, node, nbr)) {
2473 if (CHECK_FLAG(nbr->flags, ZEBRA_NEIGH_LOCAL) &&
2474 IS_ZEBRA_NEIGH_INACTIVE(nbr))
2475 zvni_neigh_probe(zvni, nbr);
2476 }
2477 }
2478
2479 /*
2480 * Inform BGP about local neighbor addition.
2481 */
2482 static int zvni_neigh_send_add_to_client(vni_t vni, struct ipaddr *ip,
2483 struct ethaddr *macaddr,
2484 uint8_t neigh_flags,
2485 uint32_t seq)
2486 {
2487 uint8_t flags = 0;
2488
2489 if (CHECK_FLAG(neigh_flags, ZEBRA_NEIGH_DEF_GW))
2490 SET_FLAG(flags, ZEBRA_MACIP_TYPE_GW);
2491 /* Set router flag (R-bit) based on local neigh entry add */
2492 if (CHECK_FLAG(neigh_flags, ZEBRA_NEIGH_ROUTER_FLAG))
2493 SET_FLAG(flags, ZEBRA_MACIP_TYPE_ROUTER_FLAG);
2494
2495 return zvni_macip_send_msg_to_client(vni, macaddr, ip, flags,
2496 seq, ZEBRA_NEIGH_ACTIVE, ZEBRA_MACIP_ADD);
2497 }
2498
2499 /*
2500 * Inform BGP about local neighbor deletion.
2501 */
2502 static int zvni_neigh_send_del_to_client(vni_t vni, struct ipaddr *ip,
2503 struct ethaddr *macaddr, uint8_t flags,
2504 int state)
2505 {
2506 return zvni_macip_send_msg_to_client(vni, macaddr, ip, flags,
2507 0, state, ZEBRA_MACIP_DEL);
2508 }
2509
2510 /*
2511 * Install remote neighbor into the kernel.
2512 */
2513 static int zvni_neigh_install(zebra_vni_t *zvni, zebra_neigh_t *n)
2514 {
2515 struct zebra_if *zif;
2516 struct zebra_l2info_vxlan *vxl;
2517 struct interface *vlan_if;
2518 #ifdef GNU_LINUX
2519 uint8_t flags;
2520 #endif
2521 int ret = 0;
2522
2523 if (!(n->flags & ZEBRA_NEIGH_REMOTE))
2524 return 0;
2525
2526 zif = zvni->vxlan_if->info;
2527 if (!zif)
2528 return -1;
2529 vxl = &zif->l2info.vxl;
2530
2531 vlan_if = zvni_map_to_svi(vxl->access_vlan, zif->brslave_info.br_if);
2532 if (!vlan_if)
2533 return -1;
2534 #ifdef GNU_LINUX
2535 flags = NTF_EXT_LEARNED;
2536 if (n->flags & ZEBRA_NEIGH_ROUTER_FLAG)
2537 flags |= NTF_ROUTER;
2538 ZEBRA_NEIGH_SET_ACTIVE(n);
2539 ret = kernel_add_neigh(vlan_if, &n->ip, &n->emac, flags);
2540 #endif
2541 return ret;
2542 }
2543
2544 /*
2545 * Uninstall remote neighbor from the kernel.
2546 */
2547 static int zvni_neigh_uninstall(zebra_vni_t *zvni, zebra_neigh_t *n)
2548 {
2549 struct zebra_if *zif;
2550 struct zebra_l2info_vxlan *vxl;
2551 struct interface *vlan_if;
2552
2553 if (!(n->flags & ZEBRA_NEIGH_REMOTE))
2554 return 0;
2555
2556 if (!zvni->vxlan_if) {
2557 zlog_debug("VNI %u hash %p couldn't be uninstalled - no intf",
2558 zvni->vni, zvni);
2559 return -1;
2560 }
2561
2562 zif = zvni->vxlan_if->info;
2563 if (!zif)
2564 return -1;
2565 vxl = &zif->l2info.vxl;
2566 vlan_if = zvni_map_to_svi(vxl->access_vlan, zif->brslave_info.br_if);
2567 if (!vlan_if)
2568 return -1;
2569
2570 ZEBRA_NEIGH_SET_INACTIVE(n);
2571 n->loc_seq = 0;
2572 return kernel_del_neigh(vlan_if, &n->ip);
2573 }
2574
2575 /*
2576 * Probe neighbor from the kernel.
2577 */
2578 static int zvni_neigh_probe(zebra_vni_t *zvni, zebra_neigh_t *n)
2579 {
2580 struct zebra_if *zif;
2581 struct zebra_l2info_vxlan *vxl;
2582 struct interface *vlan_if;
2583
2584 zif = zvni->vxlan_if->info;
2585 if (!zif)
2586 return -1;
2587 vxl = &zif->l2info.vxl;
2588
2589 vlan_if = zvni_map_to_svi(vxl->access_vlan, zif->brslave_info.br_if);
2590 if (!vlan_if)
2591 return -1;
2592
2593 #ifdef GNU_LINUX
2594 return kernel_upd_neigh(vlan_if, &n->ip, &n->emac,
2595 0, NUD_PROBE);
2596 #else
2597 return 0;
2598 #endif
2599 }
2600
2601 /*
2602 * Install neighbor hash entry - called upon access VLAN change.
2603 */
2604 static void zvni_install_neigh_hash(struct hash_bucket *bucket, void *ctxt)
2605 {
2606 zebra_neigh_t *n;
2607 struct neigh_walk_ctx *wctx = ctxt;
2608
2609 n = (zebra_neigh_t *)bucket->data;
2610
2611 if (CHECK_FLAG(n->flags, ZEBRA_NEIGH_REMOTE))
2612 zvni_neigh_install(wctx->zvni, n);
2613 }
2614
2615 /* Get the VRR interface for SVI if any */
2616 struct interface *zebra_get_vrr_intf_for_svi(struct interface *ifp)
2617 {
2618 struct zebra_vrf *zvrf = NULL;
2619 struct interface *tmp_if = NULL;
2620 struct zebra_if *zif = NULL;
2621
2622 zvrf = vrf_info_lookup(ifp->vrf_id);
2623 assert(zvrf);
2624
2625 FOR_ALL_INTERFACES (zvrf->vrf, tmp_if) {
2626 zif = tmp_if->info;
2627 if (!zif)
2628 continue;
2629
2630 if (!IS_ZEBRA_IF_MACVLAN(tmp_if))
2631 continue;
2632
2633 if (zif->link == ifp)
2634 return tmp_if;
2635 }
2636
2637 return NULL;
2638 }
2639
2640 static int zvni_del_macip_for_intf(struct interface *ifp, zebra_vni_t *zvni)
2641 {
2642 struct listnode *cnode = NULL, *cnnode = NULL;
2643 struct connected *c = NULL;
2644 struct ethaddr macaddr;
2645
2646 memcpy(&macaddr.octet, ifp->hw_addr, ETH_ALEN);
2647
2648 for (ALL_LIST_ELEMENTS(ifp->connected, cnode, cnnode, c)) {
2649 struct ipaddr ip;
2650
2651 memset(&ip, 0, sizeof(struct ipaddr));
2652 if (!CHECK_FLAG(c->conf, ZEBRA_IFC_REAL))
2653 continue;
2654
2655 if (c->address->family == AF_INET) {
2656 ip.ipa_type = IPADDR_V4;
2657 memcpy(&(ip.ipaddr_v4), &(c->address->u.prefix4),
2658 sizeof(struct in_addr));
2659 } else if (c->address->family == AF_INET6) {
2660 ip.ipa_type = IPADDR_V6;
2661 memcpy(&(ip.ipaddr_v6), &(c->address->u.prefix6),
2662 sizeof(struct in6_addr));
2663 } else {
2664 continue;
2665 }
2666
2667 zvni_gw_macip_del(ifp, zvni, &ip);
2668 }
2669
2670 return 0;
2671 }
2672
2673 static int zvni_add_macip_for_intf(struct interface *ifp, zebra_vni_t *zvni)
2674 {
2675 struct listnode *cnode = NULL, *cnnode = NULL;
2676 struct connected *c = NULL;
2677 struct ethaddr macaddr;
2678
2679 memcpy(&macaddr.octet, ifp->hw_addr, ETH_ALEN);
2680
2681 for (ALL_LIST_ELEMENTS(ifp->connected, cnode, cnnode, c)) {
2682 struct ipaddr ip;
2683
2684 memset(&ip, 0, sizeof(struct ipaddr));
2685 if (!CHECK_FLAG(c->conf, ZEBRA_IFC_REAL))
2686 continue;
2687
2688 if (c->address->family == AF_INET) {
2689 ip.ipa_type = IPADDR_V4;
2690 memcpy(&(ip.ipaddr_v4), &(c->address->u.prefix4),
2691 sizeof(struct in_addr));
2692 } else if (c->address->family == AF_INET6) {
2693 ip.ipa_type = IPADDR_V6;
2694 memcpy(&(ip.ipaddr_v6), &(c->address->u.prefix6),
2695 sizeof(struct in6_addr));
2696 } else {
2697 continue;
2698 }
2699
2700 zvni_gw_macip_add(ifp, zvni, &macaddr, &ip);
2701 }
2702 return 0;
2703 }
2704
2705
2706 static int zvni_advertise_subnet(zebra_vni_t *zvni, struct interface *ifp,
2707 int advertise)
2708 {
2709 struct listnode *cnode = NULL, *cnnode = NULL;
2710 struct connected *c = NULL;
2711 struct ethaddr macaddr;
2712
2713 memcpy(&macaddr.octet, ifp->hw_addr, ETH_ALEN);
2714
2715 for (ALL_LIST_ELEMENTS(ifp->connected, cnode, cnnode, c)) {
2716 struct prefix p;
2717
2718 memcpy(&p, c->address, sizeof(struct prefix));
2719
2720 /* skip link local address */
2721 if (IN6_IS_ADDR_LINKLOCAL(&p.u.prefix6))
2722 continue;
2723
2724 apply_mask(&p);
2725 if (advertise)
2726 ip_prefix_send_to_client(ifp->vrf_id, &p,
2727 ZEBRA_IP_PREFIX_ROUTE_ADD);
2728 else
2729 ip_prefix_send_to_client(ifp->vrf_id, &p,
2730 ZEBRA_IP_PREFIX_ROUTE_DEL);
2731 }
2732 return 0;
2733 }
2734
2735 /*
2736 * zvni_gw_macip_add_to_client
2737 */
2738 static int zvni_gw_macip_add(struct interface *ifp, zebra_vni_t *zvni,
2739 struct ethaddr *macaddr, struct ipaddr *ip)
2740 {
2741 char buf[ETHER_ADDR_STRLEN];
2742 char buf2[INET6_ADDRSTRLEN];
2743 zebra_neigh_t *n = NULL;
2744 zebra_mac_t *mac = NULL;
2745 struct zebra_if *zif = NULL;
2746 struct zebra_l2info_vxlan *vxl = NULL;
2747
2748 zif = zvni->vxlan_if->info;
2749 if (!zif)
2750 return -1;
2751
2752 vxl = &zif->l2info.vxl;
2753
2754 mac = zvni_mac_lookup(zvni, macaddr);
2755 if (!mac) {
2756 mac = zvni_mac_add(zvni, macaddr);
2757 if (!mac) {
2758 flog_err(EC_ZEBRA_MAC_ADD_FAILED,
2759 "Failed to add MAC %s intf %s(%u) VID %u",
2760 prefix_mac2str(macaddr, buf, sizeof(buf)),
2761 ifp->name, ifp->ifindex, vxl->access_vlan);
2762 return -1;
2763 }
2764 }
2765
2766 /* Set "local" forwarding info. */
2767 SET_FLAG(mac->flags, ZEBRA_MAC_LOCAL);
2768 SET_FLAG(mac->flags, ZEBRA_MAC_AUTO);
2769 SET_FLAG(mac->flags, ZEBRA_MAC_DEF_GW);
2770 memset(&mac->fwd_info, 0, sizeof(mac->fwd_info));
2771 mac->fwd_info.local.ifindex = ifp->ifindex;
2772 mac->fwd_info.local.vid = vxl->access_vlan;
2773
2774 n = zvni_neigh_lookup(zvni, ip);
2775 if (!n) {
2776 n = zvni_neigh_add(zvni, ip, macaddr);
2777 if (!n) {
2778 flog_err(
2779 EC_ZEBRA_MAC_ADD_FAILED,
2780 "Failed to add neighbor %s MAC %s intf %s(%u) -> VNI %u",
2781 ipaddr2str(ip, buf2, sizeof(buf2)),
2782 prefix_mac2str(macaddr, buf, sizeof(buf)),
2783 ifp->name, ifp->ifindex, zvni->vni);
2784 return -1;
2785 }
2786 }
2787
2788 /* Set "local" forwarding info. */
2789 SET_FLAG(n->flags, ZEBRA_NEIGH_LOCAL);
2790 SET_FLAG(n->flags, ZEBRA_NEIGH_DEF_GW);
2791 ZEBRA_NEIGH_SET_ACTIVE(n);
2792 /* Set Router flag (R-bit) */
2793 if (ip->ipa_type == IPADDR_V6)
2794 SET_FLAG(n->flags, ZEBRA_NEIGH_ROUTER_FLAG);
2795 memcpy(&n->emac, macaddr, ETH_ALEN);
2796 n->ifindex = ifp->ifindex;
2797
2798 /* Only advertise in BGP if the knob is enabled */
2799 if (!advertise_gw_macip_enabled(zvni))
2800 return 0;
2801
2802 if (IS_ZEBRA_DEBUG_VXLAN)
2803 zlog_debug(
2804 "SVI %s(%u) L2-VNI %u, sending GW MAC %s IP %s add to BGP with flags 0x%x",
2805 ifp->name, ifp->ifindex, zvni->vni,
2806 prefix_mac2str(macaddr, buf, sizeof(buf)),
2807 ipaddr2str(ip, buf2, sizeof(buf2)), n->flags);
2808
2809 zvni_neigh_send_add_to_client(zvni->vni, ip, macaddr,
2810 n->flags, n->loc_seq);
2811
2812 return 0;
2813 }
2814
2815 /*
2816 * zvni_gw_macip_del_from_client
2817 */
2818 static int zvni_gw_macip_del(struct interface *ifp, zebra_vni_t *zvni,
2819 struct ipaddr *ip)
2820 {
2821 char buf1[ETHER_ADDR_STRLEN];
2822 char buf2[INET6_ADDRSTRLEN];
2823 zebra_neigh_t *n = NULL;
2824 zebra_mac_t *mac = NULL;
2825
2826 /* If the neigh entry is not present nothing to do*/
2827 n = zvni_neigh_lookup(zvni, ip);
2828 if (!n)
2829 return 0;
2830
2831 /* mac entry should be present */
2832 mac = zvni_mac_lookup(zvni, &n->emac);
2833 if (!mac) {
2834 zlog_debug("MAC %s doesn't exist for neigh %s on VNI %u",
2835 prefix_mac2str(&n->emac, buf1, sizeof(buf1)),
2836 ipaddr2str(ip, buf2, sizeof(buf2)), zvni->vni);
2837 return -1;
2838 }
2839
2840 /* If the entry is not local nothing to do*/
2841 if (!CHECK_FLAG(n->flags, ZEBRA_NEIGH_LOCAL))
2842 return -1;
2843
2844 /* only need to delete the entry from bgp if we sent it before */
2845 if (IS_ZEBRA_DEBUG_VXLAN)
2846 zlog_debug(
2847 "%u:SVI %s(%u) VNI %u, sending GW MAC %s IP %s del to BGP",
2848 ifp->vrf_id, ifp->name, ifp->ifindex, zvni->vni,
2849 prefix_mac2str(&(n->emac), buf1, sizeof(buf1)),
2850 ipaddr2str(ip, buf2, sizeof(buf2)));
2851
2852 /* Remove neighbor from BGP. */
2853 zvni_neigh_send_del_to_client(zvni->vni, &n->ip, &n->emac,
2854 ZEBRA_MACIP_TYPE_GW, ZEBRA_NEIGH_ACTIVE);
2855
2856 /* Delete this neighbor entry. */
2857 zvni_neigh_del(zvni, n);
2858
2859 /* see if the mac needs to be deleted as well*/
2860 if (mac)
2861 zvni_deref_ip2mac(zvni, mac);
2862
2863 return 0;
2864 }
2865
2866 static void zvni_gw_macip_del_for_vni_hash(struct hash_bucket *bucket,
2867 void *ctxt)
2868 {
2869 zebra_vni_t *zvni = NULL;
2870 struct zebra_if *zif = NULL;
2871 struct zebra_l2info_vxlan zl2_info;
2872 struct interface *vlan_if = NULL;
2873 struct interface *vrr_if = NULL;
2874 struct interface *ifp;
2875
2876 /* Add primary SVI MAC*/
2877 zvni = (zebra_vni_t *)bucket->data;
2878
2879 /* Global (Zvrf) advertise-default-gw is disabled,
2880 * but zvni advertise-default-gw is enabled
2881 */
2882 if (zvni->advertise_gw_macip) {
2883 if (IS_ZEBRA_DEBUG_VXLAN)
2884 zlog_debug("VNI: %u GW-MACIP enabled, retain gw-macip",
2885 zvni->vni);
2886 return;
2887 }
2888
2889 ifp = zvni->vxlan_if;
2890 if (!ifp)
2891 return;
2892 zif = ifp->info;
2893
2894 /* If down or not mapped to a bridge, we're done. */
2895 if (!if_is_operative(ifp) || !zif->brslave_info.br_if)
2896 return;
2897
2898 zl2_info = zif->l2info.vxl;
2899
2900 vlan_if =
2901 zvni_map_to_svi(zl2_info.access_vlan, zif->brslave_info.br_if);
2902 if (!vlan_if)
2903 return;
2904
2905 /* Del primary MAC-IP */
2906 zvni_del_macip_for_intf(vlan_if, zvni);
2907
2908 /* Del VRR MAC-IP - if any*/
2909 vrr_if = zebra_get_vrr_intf_for_svi(vlan_if);
2910 if (vrr_if)
2911 zvni_del_macip_for_intf(vrr_if, zvni);
2912
2913 return;
2914 }
2915
2916 static void zvni_gw_macip_add_for_vni_hash(struct hash_bucket *bucket,
2917 void *ctxt)
2918 {
2919 zebra_vni_t *zvni = NULL;
2920 struct zebra_if *zif = NULL;
2921 struct zebra_l2info_vxlan zl2_info;
2922 struct interface *vlan_if = NULL;
2923 struct interface *vrr_if = NULL;
2924 struct interface *ifp = NULL;
2925
2926 zvni = (zebra_vni_t *)bucket->data;
2927
2928 ifp = zvni->vxlan_if;
2929 if (!ifp)
2930 return;
2931 zif = ifp->info;
2932
2933 /* If down or not mapped to a bridge, we're done. */
2934 if (!if_is_operative(ifp) || !zif->brslave_info.br_if)
2935 return;
2936 zl2_info = zif->l2info.vxl;
2937
2938 vlan_if =
2939 zvni_map_to_svi(zl2_info.access_vlan, zif->brslave_info.br_if);
2940 if (!vlan_if)
2941 return;
2942
2943 /* Add primary SVI MAC-IP */
2944 zvni_add_macip_for_intf(vlan_if, zvni);
2945
2946 if (advertise_gw_macip_enabled(zvni)) {
2947 /* Add VRR MAC-IP - if any*/
2948 vrr_if = zebra_get_vrr_intf_for_svi(vlan_if);
2949 if (vrr_if)
2950 zvni_add_macip_for_intf(vrr_if, zvni);
2951 }
2952
2953 return;
2954 }
2955
2956 static void zvni_svi_macip_del_for_vni_hash(struct hash_bucket *bucket,
2957 void *ctxt)
2958 {
2959 zebra_vni_t *zvni = NULL;
2960 struct zebra_if *zif = NULL;
2961 struct zebra_l2info_vxlan zl2_info;
2962 struct interface *vlan_if = NULL;
2963 struct interface *ifp;
2964
2965 /* Add primary SVI MAC*/
2966 zvni = (zebra_vni_t *)bucket->data;
2967 if (!zvni)
2968 return;
2969
2970 /* Global(vrf) advertise-svi-ip disabled, but zvni advertise-svi-ip
2971 * enabled
2972 */
2973 if (zvni->advertise_svi_macip) {
2974 if (IS_ZEBRA_DEBUG_VXLAN)
2975 zlog_debug("VNI: %u SVI-MACIP enabled, retain svi-macip",
2976 zvni->vni);
2977 return;
2978 }
2979
2980 ifp = zvni->vxlan_if;
2981 if (!ifp)
2982 return;
2983 zif = ifp->info;
2984
2985 /* If down or not mapped to a bridge, we're done. */
2986 if (!if_is_operative(ifp) || !zif->brslave_info.br_if)
2987 return;
2988
2989 zl2_info = zif->l2info.vxl;
2990
2991 vlan_if = zvni_map_to_svi(zl2_info.access_vlan,
2992 zif->brslave_info.br_if);
2993 if (!vlan_if)
2994 return;
2995
2996 /* Del primary MAC-IP */
2997 zvni_del_macip_for_intf(vlan_if, zvni);
2998
2999 return;
3000 }
3001
3002 static int zvni_local_neigh_update(zebra_vni_t *zvni,
3003 struct interface *ifp,
3004 struct ipaddr *ip,
3005 struct ethaddr *macaddr,
3006 bool is_router)
3007 {
3008 char buf[ETHER_ADDR_STRLEN];
3009 char buf2[INET6_ADDRSTRLEN];
3010 struct zebra_vrf *zvrf;
3011 zebra_neigh_t *n = NULL;
3012 zebra_mac_t *zmac = NULL, *old_zmac = NULL;
3013 uint32_t old_mac_seq = 0, mac_new_seq = 0;
3014 bool upd_mac_seq = false;
3015 bool neigh_mac_change = false;
3016 bool neigh_on_hold = false;
3017 bool neigh_was_remote = false;
3018 bool do_dad = false;
3019 struct in_addr vtep_ip = {.s_addr = 0};
3020
3021 /* Check if the MAC exists. */
3022 zmac = zvni_mac_lookup(zvni, macaddr);
3023 if (!zmac) {
3024 /* create a dummy MAC if the MAC is not already present */
3025 if (IS_ZEBRA_DEBUG_VXLAN)
3026 zlog_debug(
3027 "AUTO MAC %s created for neigh %s on VNI %u",
3028 prefix_mac2str(macaddr, buf, sizeof(buf)),
3029 ipaddr2str(ip, buf2, sizeof(buf2)), zvni->vni);
3030
3031 zmac = zvni_mac_add(zvni, macaddr);
3032 if (!zmac) {
3033 zlog_debug("Failed to add MAC %s VNI %u",
3034 prefix_mac2str(macaddr, buf, sizeof(buf)),
3035 zvni->vni);
3036 return -1;
3037 }
3038
3039 memset(&zmac->fwd_info, 0, sizeof(zmac->fwd_info));
3040 memset(&zmac->flags, 0, sizeof(uint32_t));
3041 SET_FLAG(zmac->flags, ZEBRA_MAC_AUTO);
3042 } else {
3043 if (CHECK_FLAG(zmac->flags, ZEBRA_MAC_REMOTE)) {
3044 /*
3045 * We don't change the MAC to local upon a neighbor
3046 * learn event, we wait for the explicit local MAC
3047 * learn. However, we have to compute its sequence
3048 * number in preparation for when it actually turns
3049 * local.
3050 */
3051 upd_mac_seq = true;
3052 }
3053 }
3054
3055 zvrf = vrf_info_lookup(zvni->vxlan_if->vrf_id);
3056 if (!zvrf) {
3057 if (IS_ZEBRA_DEBUG_VXLAN)
3058 zlog_debug("\tUnable to find vrf for: %d",
3059 zvni->vxlan_if->vrf_id);
3060 return -1;
3061 }
3062
3063 /* Check if the neighbor exists. */
3064 n = zvni_neigh_lookup(zvni, ip);
3065 if (!n) {
3066 /* New neighbor - create */
3067 n = zvni_neigh_add(zvni, ip, macaddr);
3068 if (!n) {
3069 flog_err(
3070 EC_ZEBRA_MAC_ADD_FAILED,
3071 "Failed to add neighbor %s MAC %s intf %s(%u) -> VNI %u",
3072 ipaddr2str(ip, buf2, sizeof(buf2)),
3073 prefix_mac2str(macaddr, buf, sizeof(buf)),
3074 ifp->name, ifp->ifindex, zvni->vni);
3075 return -1;
3076 }
3077 /* Set "local" forwarding info. */
3078 SET_FLAG(n->flags, ZEBRA_NEIGH_LOCAL);
3079 n->ifindex = ifp->ifindex;
3080 } else {
3081 if (CHECK_FLAG(n->flags, ZEBRA_NEIGH_LOCAL)) {
3082 bool mac_different;
3083 bool cur_is_router;
3084
3085 /* Note any changes and see if of interest to BGP. */
3086 mac_different = (memcmp(n->emac.octet,
3087 macaddr->octet, ETH_ALEN) != 0) ? 1 : 0;
3088 cur_is_router = !!CHECK_FLAG(n->flags,
3089 ZEBRA_NEIGH_ROUTER_FLAG);
3090 if (!mac_different && is_router == cur_is_router) {
3091 if (IS_ZEBRA_DEBUG_VXLAN)
3092 zlog_debug(
3093 "\tIgnoring entry mac is the same and is_router == cur_is_router");
3094 n->ifindex = ifp->ifindex;
3095 return 0;
3096 }
3097
3098 if (!mac_different) {
3099 bool is_neigh_freezed = false;
3100
3101 /* Only the router flag has changed. */
3102 if (is_router)
3103 SET_FLAG(n->flags,
3104 ZEBRA_NEIGH_ROUTER_FLAG);
3105 else
3106 UNSET_FLAG(n->flags,
3107 ZEBRA_NEIGH_ROUTER_FLAG);
3108
3109 /* Neigh is in freeze state and freeze action
3110 * is enabled, do not send update to client.
3111 */
3112 is_neigh_freezed = (zvrf->dup_addr_detect &&
3113 zvrf->dad_freeze &&
3114 CHECK_FLAG(n->flags,
3115 ZEBRA_NEIGH_DUPLICATE));
3116
3117 if (IS_ZEBRA_NEIGH_ACTIVE(n) &&
3118 !is_neigh_freezed)
3119 return zvni_neigh_send_add_to_client(
3120 zvni->vni, ip, macaddr,
3121 n->flags, n->loc_seq);
3122 else {
3123 if (IS_ZEBRA_DEBUG_VXLAN)
3124 zlog_debug(
3125 "\tNeighbor active and frozen");
3126 }
3127 return 0;
3128 }
3129
3130 /* The MAC has changed, need to issue a delete
3131 * first as this means a different MACIP route.
3132 * Also, need to do some unlinking/relinking.
3133 * We also need to update the MAC's sequence number
3134 * in different situations.
3135 */
3136 if (IS_ZEBRA_NEIGH_ACTIVE(n))
3137 zvni_neigh_send_del_to_client(zvni->vni, &n->ip,
3138 &n->emac, 0, n->state);
3139 old_zmac = zvni_mac_lookup(zvni, &n->emac);
3140 if (old_zmac) {
3141 old_mac_seq = CHECK_FLAG(old_zmac->flags,
3142 ZEBRA_MAC_REMOTE) ?
3143 old_zmac->rem_seq : old_zmac->loc_seq;
3144 neigh_mac_change = upd_mac_seq = true;
3145 listnode_delete(old_zmac->neigh_list, n);
3146 zvni_deref_ip2mac(zvni, old_zmac);
3147 }
3148
3149 /* Update the forwarding info. */
3150 n->ifindex = ifp->ifindex;
3151 memcpy(&n->emac, macaddr, ETH_ALEN);
3152
3153 /* Link to new MAC */
3154 listnode_add_sort(zmac->neigh_list, n);
3155 } else if (CHECK_FLAG(n->flags, ZEBRA_NEIGH_REMOTE)) {
3156 /*
3157 * Neighbor has moved from remote to local. Its
3158 * MAC could have also changed as part of the move.
3159 */
3160 if (memcmp(n->emac.octet, macaddr->octet,
3161 ETH_ALEN) != 0) {
3162 old_zmac = zvni_mac_lookup(zvni, &n->emac);
3163 if (old_zmac) {
3164 old_mac_seq = CHECK_FLAG(
3165 old_zmac->flags,
3166 ZEBRA_MAC_REMOTE) ?
3167 old_zmac->rem_seq :
3168 old_zmac->loc_seq;
3169 neigh_mac_change = upd_mac_seq = true;
3170 listnode_delete(old_zmac->neigh_list,
3171 n);
3172 zvni_deref_ip2mac(zvni, old_zmac);
3173 }
3174
3175 /* Link to new MAC */
3176 memcpy(&n->emac, macaddr, ETH_ALEN);
3177 listnode_add_sort(zmac->neigh_list, n);
3178 }
3179 /* Based on Mobility event Scenario-B from the
3180 * draft, neigh's previous state was remote treat this
3181 * event for DAD.
3182 */
3183 neigh_was_remote = true;
3184 vtep_ip = n->r_vtep_ip;
3185 /* Mark appropriately */
3186 UNSET_FLAG(n->flags, ZEBRA_NEIGH_REMOTE);
3187 n->r_vtep_ip.s_addr = 0;
3188 SET_FLAG(n->flags, ZEBRA_NEIGH_LOCAL);
3189 n->ifindex = ifp->ifindex;
3190 }
3191 }
3192
3193 /* If MAC was previously remote, or the neighbor had a different
3194 * MAC earlier, recompute the sequence number.
3195 */
3196 if (upd_mac_seq) {
3197 uint32_t seq1, seq2;
3198
3199 seq1 = CHECK_FLAG(zmac->flags, ZEBRA_MAC_REMOTE) ?
3200 zmac->rem_seq + 1 : zmac->loc_seq;
3201 seq2 = neigh_mac_change ? old_mac_seq + 1 : 0;
3202 mac_new_seq = zmac->loc_seq < MAX(seq1, seq2) ?
3203 MAX(seq1, seq2) : zmac->loc_seq;
3204 }
3205
3206 /* Mark Router flag (R-bit) */
3207 if (is_router)
3208 SET_FLAG(n->flags, ZEBRA_NEIGH_ROUTER_FLAG);
3209 else
3210 UNSET_FLAG(n->flags, ZEBRA_NEIGH_ROUTER_FLAG);
3211
3212 /* Check old and/or new MAC detected as duplicate mark
3213 * the neigh as duplicate
3214 */
3215 if (zebra_vxlan_ip_inherit_dad_from_mac(zvrf, old_zmac, zmac, n)) {
3216 flog_warn(EC_ZEBRA_DUP_IP_INHERIT_DETECTED,
3217 "VNI %u: MAC %s IP %s detected as duplicate during local update, inherit duplicate from MAC",
3218 zvni->vni,
3219 prefix_mac2str(macaddr, buf, sizeof(buf)),
3220 ipaddr2str(&n->ip, buf2, sizeof(buf2)));
3221 }
3222
3223 /* For IP Duplicate Address Detection (DAD) is trigger,
3224 * when the event is extended mobility based on scenario-B
3225 * from the draft, IP/Neigh's MAC binding changed and
3226 * neigh's previous state was remote.
3227 */
3228 if (neigh_mac_change && neigh_was_remote)
3229 do_dad = true;
3230
3231 zebra_vxlan_dup_addr_detect_for_neigh(zvrf, n, vtep_ip, do_dad,
3232 &neigh_on_hold, true);
3233
3234 /* Before we program this in BGP, we need to check if MAC is locally
3235 * learnt. If not, force neighbor to be inactive and reset its seq.
3236 */
3237 if (!CHECK_FLAG(zmac->flags, ZEBRA_MAC_LOCAL)) {
3238 ZEBRA_NEIGH_SET_INACTIVE(n);
3239 n->loc_seq = 0;
3240 zmac->loc_seq = mac_new_seq;
3241 return 0;
3242 }
3243
3244 /* If the MAC's sequence number has changed, inform the MAC and all
3245 * neighbors associated with the MAC to BGP, else just inform this
3246 * neighbor.
3247 */
3248 if (upd_mac_seq && zmac->loc_seq != mac_new_seq) {
3249 if (IS_ZEBRA_DEBUG_VXLAN)
3250 zlog_debug("Seq changed for MAC %s VNI %u - old %u new %u",
3251 prefix_mac2str(macaddr, buf, sizeof(buf)),
3252 zvni->vni, zmac->loc_seq, mac_new_seq);
3253 zmac->loc_seq = mac_new_seq;
3254 if (zvni_mac_send_add_to_client(zvni->vni, macaddr,
3255 zmac->flags, zmac->loc_seq))
3256 return -1;
3257 zvni_process_neigh_on_local_mac_change(zvni, zmac, 1);
3258 return 0;
3259 }
3260
3261 n->loc_seq = zmac->loc_seq;
3262
3263 if (!neigh_on_hold) {
3264 ZEBRA_NEIGH_SET_ACTIVE(n);
3265
3266 return zvni_neigh_send_add_to_client(zvni->vni, ip, macaddr,
3267 n->flags, n->loc_seq);
3268 } else {
3269 if (IS_ZEBRA_DEBUG_VXLAN)
3270 zlog_debug("\tNeighbor on hold not sending");
3271 }
3272 return 0;
3273 }
3274
3275 static int zvni_remote_neigh_update(zebra_vni_t *zvni,
3276 struct interface *ifp,
3277 struct ipaddr *ip,
3278 struct ethaddr *macaddr,
3279 uint16_t state)
3280 {
3281 char buf[ETHER_ADDR_STRLEN];
3282 char buf2[INET6_ADDRSTRLEN];
3283 zebra_neigh_t *n = NULL;
3284 zebra_mac_t *zmac = NULL;
3285
3286 /* If the neighbor is unknown, there is no further action. */
3287 n = zvni_neigh_lookup(zvni, ip);
3288 if (!n)
3289 return 0;
3290
3291 /* If a remote entry, see if it needs to be refreshed */
3292 if (CHECK_FLAG(n->flags, ZEBRA_NEIGH_REMOTE)) {
3293 #ifdef GNU_LINUX
3294 if (state & NUD_STALE)
3295 zvni_neigh_install(zvni, n);
3296 #endif
3297 } else {
3298 /* We got a "remote" neighbor notification for an entry
3299 * we think is local. This can happen in a multihoming
3300 * scenario - but only if the MAC is already "remote".
3301 * Just mark our entry as "remote".
3302 */
3303 zmac = zvni_mac_lookup(zvni, macaddr);
3304 if (!zmac || !CHECK_FLAG(zmac->flags, ZEBRA_MAC_REMOTE)) {
3305 zlog_debug(
3306 "Ignore remote neigh %s (MAC %s) on L2-VNI %u - MAC unknown or local",
3307 ipaddr2str(&n->ip, buf2, sizeof(buf2)),
3308 prefix_mac2str(macaddr, buf, sizeof(buf)),
3309 zvni->vni);
3310 return -1;
3311 }
3312
3313 UNSET_FLAG(n->flags, ZEBRA_NEIGH_LOCAL);
3314 SET_FLAG(n->flags, ZEBRA_NEIGH_REMOTE);
3315 ZEBRA_NEIGH_SET_ACTIVE(n);
3316 n->r_vtep_ip = zmac->fwd_info.r_vtep_ip;
3317 }
3318
3319 return 0;
3320 }
3321
3322 /*
3323 * Make hash key for MAC.
3324 */
3325 static unsigned int mac_hash_keymake(const void *p)
3326 {
3327 const zebra_mac_t *pmac = p;
3328 const void *pnt = (void *)pmac->macaddr.octet;
3329
3330 return jhash(pnt, ETH_ALEN, 0xa5a5a55a);
3331 }
3332
3333 /*
3334 * Compare two MAC addresses.
3335 */
3336 static bool mac_cmp(const void *p1, const void *p2)
3337 {
3338 const zebra_mac_t *pmac1 = p1;
3339 const zebra_mac_t *pmac2 = p2;
3340
3341 if (pmac1 == NULL && pmac2 == NULL)
3342 return true;
3343
3344 if (pmac1 == NULL || pmac2 == NULL)
3345 return false;
3346
3347 return (memcmp(pmac1->macaddr.octet, pmac2->macaddr.octet, ETH_ALEN)
3348 == 0);
3349 }
3350
3351 /*
3352 * Callback to allocate MAC hash entry.
3353 */
3354 static void *zvni_mac_alloc(void *p)
3355 {
3356 const zebra_mac_t *tmp_mac = p;
3357 zebra_mac_t *mac;
3358
3359 mac = XCALLOC(MTYPE_MAC, sizeof(zebra_mac_t));
3360 *mac = *tmp_mac;
3361
3362 return ((void *)mac);
3363 }
3364
3365 /*
3366 * Add MAC entry.
3367 */
3368 static zebra_mac_t *zvni_mac_add(zebra_vni_t *zvni, struct ethaddr *macaddr)
3369 {
3370 zebra_mac_t tmp_mac;
3371 zebra_mac_t *mac = NULL;
3372
3373 memset(&tmp_mac, 0, sizeof(zebra_mac_t));
3374 memcpy(&tmp_mac.macaddr, macaddr, ETH_ALEN);
3375 mac = hash_get(zvni->mac_table, &tmp_mac, zvni_mac_alloc);
3376 assert(mac);
3377
3378 mac->zvni = zvni;
3379 mac->dad_mac_auto_recovery_timer = NULL;
3380
3381 mac->neigh_list = list_new();
3382 mac->neigh_list->cmp = neigh_list_cmp;
3383
3384 return mac;
3385 }
3386
3387 /*
3388 * Delete MAC entry.
3389 */
3390 static int zvni_mac_del(zebra_vni_t *zvni, zebra_mac_t *mac)
3391 {
3392 zebra_mac_t *tmp_mac;
3393
3394 /* Cancel auto recovery */
3395 THREAD_OFF(mac->dad_mac_auto_recovery_timer);
3396
3397 list_delete(&mac->neigh_list);
3398
3399 /* Free the VNI hash entry and allocated memory. */
3400 tmp_mac = hash_release(zvni->mac_table, mac);
3401 XFREE(MTYPE_MAC, tmp_mac);
3402
3403 return 0;
3404 }
3405
3406 /*
3407 * Free MAC hash entry (callback)
3408 */
3409 static void zvni_mac_del_hash_entry(struct hash_bucket *bucket, void *arg)
3410 {
3411 struct mac_walk_ctx *wctx = arg;
3412 zebra_mac_t *mac = bucket->data;
3413
3414 if (((wctx->flags & DEL_LOCAL_MAC) && (mac->flags & ZEBRA_MAC_LOCAL))
3415 || ((wctx->flags & DEL_REMOTE_MAC)
3416 && (mac->flags & ZEBRA_MAC_REMOTE))
3417 || ((wctx->flags & DEL_REMOTE_MAC_FROM_VTEP)
3418 && (mac->flags & ZEBRA_MAC_REMOTE)
3419 && IPV4_ADDR_SAME(&mac->fwd_info.r_vtep_ip,
3420 &wctx->r_vtep_ip))) {
3421 if (wctx->upd_client && (mac->flags & ZEBRA_MAC_LOCAL)) {
3422 zvni_mac_send_del_to_client(wctx->zvni->vni,
3423 &mac->macaddr);
3424 }
3425
3426 if (wctx->uninstall)
3427 zvni_mac_uninstall(wctx->zvni, mac);
3428
3429 zvni_mac_del(wctx->zvni, mac);
3430 }
3431
3432 return;
3433 }
3434
3435 /*
3436 * Delete all MAC entries from specific VTEP for a particular VNI.
3437 */
3438 static void zvni_mac_del_from_vtep(zebra_vni_t *zvni, int uninstall,
3439 struct in_addr *r_vtep_ip)
3440 {
3441 struct mac_walk_ctx wctx;
3442
3443 if (!zvni->mac_table)
3444 return;
3445
3446 memset(&wctx, 0, sizeof(struct mac_walk_ctx));
3447 wctx.zvni = zvni;
3448 wctx.uninstall = uninstall;
3449 wctx.flags = DEL_REMOTE_MAC_FROM_VTEP;
3450 wctx.r_vtep_ip = *r_vtep_ip;
3451
3452 hash_iterate(zvni->mac_table, zvni_mac_del_hash_entry, &wctx);
3453 }
3454
3455 /*
3456 * Delete all MAC entries for this VNI.
3457 */
3458 static void zvni_mac_del_all(zebra_vni_t *zvni, int uninstall, int upd_client,
3459 uint32_t flags)
3460 {
3461 struct mac_walk_ctx wctx;
3462
3463 if (!zvni->mac_table)
3464 return;
3465
3466 memset(&wctx, 0, sizeof(struct mac_walk_ctx));
3467 wctx.zvni = zvni;
3468 wctx.uninstall = uninstall;
3469 wctx.upd_client = upd_client;
3470 wctx.flags = flags;
3471
3472 hash_iterate(zvni->mac_table, zvni_mac_del_hash_entry, &wctx);
3473 }
3474
3475 /*
3476 * Look up MAC hash entry.
3477 */
3478 static zebra_mac_t *zvni_mac_lookup(zebra_vni_t *zvni, struct ethaddr *mac)
3479 {
3480 zebra_mac_t tmp;
3481 zebra_mac_t *pmac;
3482
3483 memset(&tmp, 0, sizeof(tmp));
3484 memcpy(&tmp.macaddr, mac, ETH_ALEN);
3485 pmac = hash_lookup(zvni->mac_table, &tmp);
3486
3487 return pmac;
3488 }
3489
3490 /*
3491 * Inform BGP about local MAC addition.
3492 */
3493 static int zvni_mac_send_add_to_client(vni_t vni, struct ethaddr *macaddr,
3494 uint8_t mac_flags, uint32_t seq)
3495 {
3496 uint8_t flags = 0;
3497
3498 if (CHECK_FLAG(mac_flags, ZEBRA_MAC_STICKY))
3499 SET_FLAG(flags, ZEBRA_MACIP_TYPE_STICKY);
3500 if (CHECK_FLAG(mac_flags, ZEBRA_MAC_DEF_GW))
3501 SET_FLAG(flags, ZEBRA_MACIP_TYPE_GW);
3502
3503 return zvni_macip_send_msg_to_client(vni, macaddr, NULL, flags,
3504 seq, ZEBRA_NEIGH_ACTIVE, ZEBRA_MACIP_ADD);
3505 }
3506
3507 /*
3508 * Inform BGP about local MAC deletion.
3509 */
3510 static int zvni_mac_send_del_to_client(vni_t vni, struct ethaddr *macaddr)
3511 {
3512 return zvni_macip_send_msg_to_client(vni, macaddr, NULL, 0 /* flags */,
3513 0 /* seq */, ZEBRA_NEIGH_ACTIVE, ZEBRA_MACIP_DEL);
3514 }
3515
3516 /*
3517 * Map port or (port, VLAN) to a VNI. This is invoked upon getting MAC
3518 * notifications, to see if they are of interest.
3519 */
3520 static zebra_vni_t *zvni_map_vlan(struct interface *ifp,
3521 struct interface *br_if, vlanid_t vid)
3522 {
3523 struct zebra_ns *zns;
3524 struct route_node *rn;
3525 struct interface *tmp_if = NULL;
3526 struct zebra_if *zif;
3527 struct zebra_l2info_bridge *br;
3528 struct zebra_l2info_vxlan *vxl = NULL;
3529 uint8_t bridge_vlan_aware;
3530 zebra_vni_t *zvni;
3531 int found = 0;
3532
3533 /* Determine if bridge is VLAN-aware or not */
3534 zif = br_if->info;
3535 assert(zif);
3536 br = &zif->l2info.br;
3537 bridge_vlan_aware = br->vlan_aware;
3538
3539 /* See if this interface (or interface plus VLAN Id) maps to a VxLAN */
3540 /* TODO: Optimize with a hash. */
3541 zns = zebra_ns_lookup(NS_DEFAULT);
3542 for (rn = route_top(zns->if_table); rn; rn = route_next(rn)) {
3543 tmp_if = (struct interface *)rn->info;
3544 if (!tmp_if)
3545 continue;
3546 zif = tmp_if->info;
3547 if (!zif || zif->zif_type != ZEBRA_IF_VXLAN)
3548 continue;
3549 if (!if_is_operative(tmp_if))
3550 continue;
3551 vxl = &zif->l2info.vxl;
3552
3553 if (zif->brslave_info.br_if != br_if)
3554 continue;
3555
3556 if (!bridge_vlan_aware || vxl->access_vlan == vid) {
3557 found = 1;
3558 break;
3559 }
3560 }
3561
3562 if (!found)
3563 return NULL;
3564
3565 zvni = zvni_lookup(vxl->vni);
3566 return zvni;
3567 }
3568
3569 /*
3570 * Map SVI and associated bridge to a VNI. This is invoked upon getting
3571 * neighbor notifications, to see if they are of interest.
3572 */
3573 static zebra_vni_t *zvni_from_svi(struct interface *ifp,
3574 struct interface *br_if)
3575 {
3576 struct zebra_ns *zns;
3577 struct route_node *rn;
3578 struct interface *tmp_if = NULL;
3579 struct zebra_if *zif;
3580 struct zebra_l2info_bridge *br;
3581 struct zebra_l2info_vxlan *vxl = NULL;
3582 uint8_t bridge_vlan_aware;
3583 vlanid_t vid = 0;
3584 zebra_vni_t *zvni;
3585 int found = 0;
3586
3587 if (!br_if)
3588 return NULL;
3589
3590 /* Make sure the linked interface is a bridge. */
3591 if (!IS_ZEBRA_IF_BRIDGE(br_if))
3592 return NULL;
3593
3594 /* Determine if bridge is VLAN-aware or not */
3595 zif = br_if->info;
3596 assert(zif);
3597 br = &zif->l2info.br;
3598 bridge_vlan_aware = br->vlan_aware;
3599 if (bridge_vlan_aware) {
3600 struct zebra_l2info_vlan *vl;
3601
3602 if (!IS_ZEBRA_IF_VLAN(ifp))
3603 return NULL;
3604
3605 zif = ifp->info;
3606 assert(zif);
3607 vl = &zif->l2info.vl;
3608 vid = vl->vid;
3609 }
3610
3611 /* See if this interface (or interface plus VLAN Id) maps to a VxLAN */
3612 /* TODO: Optimize with a hash. */
3613 zns = zebra_ns_lookup(NS_DEFAULT);
3614 for (rn = route_top(zns->if_table); rn; rn = route_next(rn)) {
3615 tmp_if = (struct interface *)rn->info;
3616 if (!tmp_if)
3617 continue;
3618 zif = tmp_if->info;
3619 if (!zif || zif->zif_type != ZEBRA_IF_VXLAN)
3620 continue;
3621 if (!if_is_operative(tmp_if))
3622 continue;
3623 vxl = &zif->l2info.vxl;
3624
3625 if (zif->brslave_info.br_if != br_if)
3626 continue;
3627
3628 if (!bridge_vlan_aware || vxl->access_vlan == vid) {
3629 found = 1;
3630 break;
3631 }
3632 }
3633
3634 if (!found)
3635 return NULL;
3636
3637 zvni = zvni_lookup(vxl->vni);
3638 return zvni;
3639 }
3640
3641 /* Map to SVI on bridge corresponding to specified VLAN. This can be one
3642 * of two cases:
3643 * (a) In the case of a VLAN-aware bridge, the SVI is a L3 VLAN interface
3644 * linked to the bridge
3645 * (b) In the case of a VLAN-unaware bridge, the SVI is the bridge inteface
3646 * itself
3647 */
3648 static struct interface *zvni_map_to_svi(vlanid_t vid, struct interface *br_if)
3649 {
3650 struct zebra_ns *zns;
3651 struct route_node *rn;
3652 struct interface *tmp_if = NULL;
3653 struct zebra_if *zif;
3654 struct zebra_l2info_bridge *br;
3655 struct zebra_l2info_vlan *vl;
3656 uint8_t bridge_vlan_aware;
3657 int found = 0;
3658
3659 /* Defensive check, caller expected to invoke only with valid bridge. */
3660 if (!br_if)
3661 return NULL;
3662
3663 /* Determine if bridge is VLAN-aware or not */
3664 zif = br_if->info;
3665 assert(zif);
3666 br = &zif->l2info.br;
3667 bridge_vlan_aware = br->vlan_aware;
3668
3669 /* Check oper status of the SVI. */
3670 if (!bridge_vlan_aware)
3671 return if_is_operative(br_if) ? br_if : NULL;
3672
3673 /* Identify corresponding VLAN interface. */
3674 /* TODO: Optimize with a hash. */
3675 zns = zebra_ns_lookup(NS_DEFAULT);
3676 for (rn = route_top(zns->if_table); rn; rn = route_next(rn)) {
3677 tmp_if = (struct interface *)rn->info;
3678 /* Check oper status of the SVI. */
3679 if (!tmp_if || !if_is_operative(tmp_if))
3680 continue;
3681 zif = tmp_if->info;
3682 if (!zif || zif->zif_type != ZEBRA_IF_VLAN
3683 || zif->link != br_if)
3684 continue;
3685 vl = (struct zebra_l2info_vlan *)&zif->l2info.vl;
3686
3687 if (vl->vid == vid) {
3688 found = 1;
3689 break;
3690 }
3691 }
3692
3693 return found ? tmp_if : NULL;
3694 }
3695
3696 /*
3697 * Install remote MAC into the kernel.
3698 */
3699 static int zvni_mac_install(zebra_vni_t *zvni, zebra_mac_t *mac)
3700 {
3701 struct zebra_if *zif;
3702 struct zebra_l2info_vxlan *vxl;
3703 bool sticky;
3704
3705 if (!(mac->flags & ZEBRA_MAC_REMOTE))
3706 return 0;
3707
3708 zif = zvni->vxlan_if->info;
3709 if (!zif)
3710 return -1;
3711 vxl = &zif->l2info.vxl;
3712
3713 sticky = !!CHECK_FLAG(mac->flags,
3714 (ZEBRA_MAC_STICKY | ZEBRA_MAC_REMOTE_DEF_GW));
3715
3716 return kernel_add_mac(zvni->vxlan_if, vxl->access_vlan, &mac->macaddr,
3717 mac->fwd_info.r_vtep_ip, sticky);
3718 }
3719
3720 /*
3721 * Uninstall remote MAC from the kernel.
3722 */
3723 static int zvni_mac_uninstall(zebra_vni_t *zvni, zebra_mac_t *mac)
3724 {
3725 struct zebra_if *zif;
3726 struct zebra_l2info_vxlan *vxl;
3727 struct in_addr vtep_ip;
3728 struct interface *ifp;
3729
3730 if (!(mac->flags & ZEBRA_MAC_REMOTE))
3731 return 0;
3732
3733 if (!zvni->vxlan_if) {
3734 zlog_debug("VNI %u hash %p couldn't be uninstalled - no intf",
3735 zvni->vni, zvni);
3736 return -1;
3737 }
3738
3739 zif = zvni->vxlan_if->info;
3740 if (!zif)
3741 return -1;
3742 vxl = &zif->l2info.vxl;
3743
3744 ifp = zvni->vxlan_if;
3745 vtep_ip = mac->fwd_info.r_vtep_ip;
3746
3747 return kernel_del_mac(ifp, vxl->access_vlan, &mac->macaddr, vtep_ip);
3748 }
3749
3750 /*
3751 * Install MAC hash entry - called upon access VLAN change.
3752 */
3753 static void zvni_install_mac_hash(struct hash_bucket *bucket, void *ctxt)
3754 {
3755 zebra_mac_t *mac;
3756 struct mac_walk_ctx *wctx = ctxt;
3757
3758 mac = (zebra_mac_t *)bucket->data;
3759
3760 if (CHECK_FLAG(mac->flags, ZEBRA_MAC_REMOTE))
3761 zvni_mac_install(wctx->zvni, mac);
3762 }
3763
3764 /*
3765 * Count of remote neighbors referencing this MAC.
3766 */
3767 static int remote_neigh_count(zebra_mac_t *zmac)
3768 {
3769 zebra_neigh_t *n = NULL;
3770 struct listnode *node = NULL;
3771 int count = 0;
3772
3773 for (ALL_LIST_ELEMENTS_RO(zmac->neigh_list, node, n)) {
3774 if (CHECK_FLAG(n->flags, ZEBRA_NEIGH_REMOTE))
3775 count++;
3776 }
3777
3778 return count;
3779 }
3780
3781 /*
3782 * Decrement neighbor refcount of MAC; uninstall and free it if
3783 * appropriate.
3784 */
3785 static void zvni_deref_ip2mac(zebra_vni_t *zvni, zebra_mac_t *mac)
3786 {
3787 if (!CHECK_FLAG(mac->flags, ZEBRA_MAC_AUTO))
3788 return;
3789
3790 /* If all remote neighbors referencing a remote MAC go away,
3791 * we need to uninstall the MAC.
3792 */
3793 if (CHECK_FLAG(mac->flags, ZEBRA_MAC_REMOTE) &&
3794 remote_neigh_count(mac) == 0) {
3795 zvni_mac_uninstall(zvni, mac);
3796 UNSET_FLAG(mac->flags, ZEBRA_MAC_REMOTE);
3797 }
3798
3799 /* If no neighbors, delete the MAC. */
3800 if (list_isempty(mac->neigh_list))
3801 zvni_mac_del(zvni, mac);
3802 }
3803
3804 /*
3805 * Read and populate local MACs and neighbors corresponding to this VNI.
3806 */
3807 static void zvni_read_mac_neigh(zebra_vni_t *zvni, struct interface *ifp)
3808 {
3809 struct zebra_ns *zns;
3810 struct zebra_if *zif;
3811 struct interface *vlan_if;
3812 struct zebra_l2info_vxlan *vxl;
3813 struct interface *vrr_if;
3814
3815 zif = ifp->info;
3816 vxl = &zif->l2info.vxl;
3817 zns = zebra_ns_lookup(NS_DEFAULT);
3818
3819 if (IS_ZEBRA_DEBUG_VXLAN)
3820 zlog_debug(
3821 "Reading MAC FDB and Neighbors for intf %s(%u) VNI %u master %u",
3822 ifp->name, ifp->ifindex, zvni->vni,
3823 zif->brslave_info.bridge_ifindex);
3824
3825 macfdb_read_for_bridge(zns, ifp, zif->brslave_info.br_if);
3826 vlan_if = zvni_map_to_svi(vxl->access_vlan, zif->brslave_info.br_if);
3827 if (vlan_if) {
3828
3829 /* Add SVI MAC-IP */
3830 zvni_add_macip_for_intf(vlan_if, zvni);
3831
3832 /* Add VRR MAC-IP - if any*/
3833 vrr_if = zebra_get_vrr_intf_for_svi(vlan_if);
3834 if (vrr_if)
3835 zvni_add_macip_for_intf(vrr_if, zvni);
3836
3837 neigh_read_for_vlan(zns, vlan_if);
3838 }
3839 }
3840
3841 /*
3842 * Hash function for VNI.
3843 */
3844 static unsigned int vni_hash_keymake(const void *p)
3845 {
3846 const zebra_vni_t *zvni = p;
3847
3848 return (jhash_1word(zvni->vni, 0));
3849 }
3850
3851 /*
3852 * Compare 2 VNI hash entries.
3853 */
3854 static bool vni_hash_cmp(const void *p1, const void *p2)
3855 {
3856 const zebra_vni_t *zvni1 = p1;
3857 const zebra_vni_t *zvni2 = p2;
3858
3859 return (zvni1->vni == zvni2->vni);
3860 }
3861
3862 static int vni_list_cmp(void *p1, void *p2)
3863 {
3864 const zebra_vni_t *zvni1 = p1;
3865 const zebra_vni_t *zvni2 = p2;
3866
3867 if (zvni1->vni == zvni2->vni)
3868 return 0;
3869 return (zvni1->vni < zvni2->vni) ? -1 : 1;
3870 }
3871
3872 /*
3873 * Callback to allocate VNI hash entry.
3874 */
3875 static void *zvni_alloc(void *p)
3876 {
3877 const zebra_vni_t *tmp_vni = p;
3878 zebra_vni_t *zvni;
3879
3880 zvni = XCALLOC(MTYPE_ZVNI, sizeof(zebra_vni_t));
3881 zvni->vni = tmp_vni->vni;
3882 return ((void *)zvni);
3883 }
3884
3885 /*
3886 * Look up VNI hash entry.
3887 */
3888 static zebra_vni_t *zvni_lookup(vni_t vni)
3889 {
3890 struct zebra_vrf *zvrf;
3891 zebra_vni_t tmp_vni;
3892 zebra_vni_t *zvni = NULL;
3893
3894 zvrf = zebra_vrf_get_evpn();
3895 assert(zvrf);
3896 memset(&tmp_vni, 0, sizeof(zebra_vni_t));
3897 tmp_vni.vni = vni;
3898 zvni = hash_lookup(zvrf->vni_table, &tmp_vni);
3899
3900 return zvni;
3901 }
3902
3903 /*
3904 * Add VNI hash entry.
3905 */
3906 static zebra_vni_t *zvni_add(vni_t vni)
3907 {
3908 struct zebra_vrf *zvrf;
3909 zebra_vni_t tmp_zvni;
3910 zebra_vni_t *zvni = NULL;
3911
3912 zvrf = zebra_vrf_get_evpn();
3913 assert(zvrf);
3914 memset(&tmp_zvni, 0, sizeof(zebra_vni_t));
3915 tmp_zvni.vni = vni;
3916 zvni = hash_get(zvrf->vni_table, &tmp_zvni, zvni_alloc);
3917 assert(zvni);
3918
3919 /* Create hash table for MAC */
3920 zvni->mac_table =
3921 hash_create(mac_hash_keymake, mac_cmp, "Zebra VNI MAC Table");
3922
3923 /* Create hash table for neighbors */
3924 zvni->neigh_table = hash_create(neigh_hash_keymake, neigh_cmp,
3925 "Zebra VNI Neighbor Table");
3926
3927 return zvni;
3928 }
3929
3930 /*
3931 * Delete VNI hash entry.
3932 */
3933 static int zvni_del(zebra_vni_t *zvni)
3934 {
3935 struct zebra_vrf *zvrf;
3936 zebra_vni_t *tmp_zvni;
3937
3938 zvrf = zebra_vrf_get_evpn();
3939 assert(zvrf);
3940
3941 zvni->vxlan_if = NULL;
3942
3943 /* Remove references to the BUM mcast grp */
3944 zebra_vxlan_sg_deref(zvni->local_vtep_ip, zvni->mcast_grp);
3945
3946 /* Free the neighbor hash table. */
3947 hash_free(zvni->neigh_table);
3948 zvni->neigh_table = NULL;
3949
3950 /* Free the MAC hash table. */
3951 hash_free(zvni->mac_table);
3952 zvni->mac_table = NULL;
3953
3954 /* Free the VNI hash entry and allocated memory. */
3955 tmp_zvni = hash_release(zvrf->vni_table, zvni);
3956 XFREE(MTYPE_ZVNI, tmp_zvni);
3957
3958 return 0;
3959 }
3960
3961 /*
3962 * Inform BGP about local VNI addition.
3963 */
3964 static int zvni_send_add_to_client(zebra_vni_t *zvni)
3965 {
3966 struct zserv *client;
3967 struct stream *s;
3968
3969 client = zserv_find_client(ZEBRA_ROUTE_BGP, 0);
3970 /* BGP may not be running. */
3971 if (!client)
3972 return 0;
3973
3974 s = stream_new(ZEBRA_MAX_PACKET_SIZ);
3975
3976 zclient_create_header(s, ZEBRA_VNI_ADD, zebra_vrf_get_evpn_id());
3977 stream_putl(s, zvni->vni);
3978 stream_put_in_addr(s, &zvni->local_vtep_ip);
3979 stream_put(s, &zvni->vrf_id, sizeof(vrf_id_t)); /* tenant vrf */
3980 stream_put_in_addr(s, &zvni->mcast_grp);
3981
3982 /* Write packet size. */
3983 stream_putw_at(s, 0, stream_get_endp(s));
3984
3985 if (IS_ZEBRA_DEBUG_VXLAN)
3986 zlog_debug("Send VNI_ADD %u %s tenant vrf %s to %s", zvni->vni,
3987 inet_ntoa(zvni->local_vtep_ip),
3988 vrf_id_to_name(zvni->vrf_id),
3989 zebra_route_string(client->proto));
3990
3991 client->vniadd_cnt++;
3992 return zserv_send_message(client, s);
3993 }
3994
3995 /*
3996 * Inform BGP about local VNI deletion.
3997 */
3998 static int zvni_send_del_to_client(vni_t vni)
3999 {
4000 struct zserv *client;
4001 struct stream *s;
4002
4003 client = zserv_find_client(ZEBRA_ROUTE_BGP, 0);
4004 /* BGP may not be running. */
4005 if (!client)
4006 return 0;
4007
4008 s = stream_new(ZEBRA_MAX_PACKET_SIZ);
4009 stream_reset(s);
4010
4011 zclient_create_header(s, ZEBRA_VNI_DEL, zebra_vrf_get_evpn_id());
4012 stream_putl(s, vni);
4013
4014 /* Write packet size. */
4015 stream_putw_at(s, 0, stream_get_endp(s));
4016
4017 if (IS_ZEBRA_DEBUG_VXLAN)
4018 zlog_debug("Send VNI_DEL %u to %s", vni,
4019 zebra_route_string(client->proto));
4020
4021 client->vnidel_cnt++;
4022 return zserv_send_message(client, s);
4023 }
4024
4025 /*
4026 * Build the VNI hash table by going over the VxLAN interfaces. This
4027 * is called when EVPN (advertise-all-vni) is enabled.
4028 */
4029 static void zvni_build_hash_table(void)
4030 {
4031 struct zebra_ns *zns;
4032 struct route_node *rn;
4033 struct interface *ifp;
4034
4035 /* Walk VxLAN interfaces and create VNI hash. */
4036 zns = zebra_ns_lookup(NS_DEFAULT);
4037 for (rn = route_top(zns->if_table); rn; rn = route_next(rn)) {
4038 vni_t vni;
4039 zebra_vni_t *zvni = NULL;
4040 zebra_l3vni_t *zl3vni = NULL;
4041 struct zebra_if *zif;
4042 struct zebra_l2info_vxlan *vxl;
4043
4044 ifp = (struct interface *)rn->info;
4045 if (!ifp)
4046 continue;
4047 zif = ifp->info;
4048 if (!zif || zif->zif_type != ZEBRA_IF_VXLAN)
4049 continue;
4050
4051 vxl = &zif->l2info.vxl;
4052 vni = vxl->vni;
4053
4054 /* L3-VNI and L2-VNI are handled seperately */
4055 zl3vni = zl3vni_lookup(vni);
4056 if (zl3vni) {
4057
4058 if (IS_ZEBRA_DEBUG_VXLAN)
4059 zlog_debug(
4060 "create L3-VNI hash for Intf %s(%u) L3-VNI %u",
4061 ifp->name, ifp->ifindex, vni);
4062
4063 /* associate with vxlan_if */
4064 zl3vni->local_vtep_ip = vxl->vtep_ip;
4065 zl3vni->vxlan_if = ifp;
4066
4067 /*
4068 * we need to associate with SVI.
4069 * we can associate with svi-if only after association
4070 * with vxlan-intf is complete
4071 */
4072 zl3vni->svi_if = zl3vni_map_to_svi_if(zl3vni);
4073
4074 if (is_l3vni_oper_up(zl3vni))
4075 zebra_vxlan_process_l3vni_oper_up(zl3vni);
4076
4077 } else {
4078 struct interface *vlan_if = NULL;
4079
4080 if (IS_ZEBRA_DEBUG_VXLAN)
4081 zlog_debug(
4082 "Create L2-VNI hash for intf %s(%u) L2-VNI %u local IP %s",
4083 ifp->name, ifp->ifindex, vni,
4084 inet_ntoa(vxl->vtep_ip));
4085
4086 /* VNI hash entry is expected to exist, if the BGP process is killed */
4087 zvni = zvni_lookup(vni);
4088 if (zvni) {
4089 zlog_debug(
4090 "VNI hash already present for IF %s(%u) L2-VNI %u",
4091 ifp->name, ifp->ifindex, vni);
4092
4093 /*
4094 * Inform BGP if intf is up and mapped to
4095 * bridge.
4096 */
4097 if (if_is_operative(ifp) &&
4098 zif->brslave_info.br_if)
4099 zvni_send_add_to_client(zvni);
4100
4101 /* Send Local MAC-entries to client */
4102 zvni_send_mac_to_client(zvni);
4103
4104 /* Send Loval Neighbor entries to client */
4105 zvni_send_neigh_to_client(zvni);
4106 } else {
4107 zvni = zvni_add(vni);
4108 if (!zvni) {
4109 zlog_debug(
4110 "Failed to add VNI hash, IF %s(%u) L2-VNI %u",
4111 ifp->name, ifp->ifindex, vni);
4112 return;
4113 }
4114
4115 if (zvni->local_vtep_ip.s_addr !=
4116 vxl->vtep_ip.s_addr ||
4117 zvni->mcast_grp.s_addr !=
4118 vxl->mcast_grp.s_addr) {
4119 zebra_vxlan_sg_deref(
4120 zvni->local_vtep_ip,
4121 zvni->mcast_grp);
4122 zebra_vxlan_sg_ref(vxl->vtep_ip,
4123 vxl->mcast_grp);
4124 zvni->local_vtep_ip = vxl->vtep_ip;
4125 zvni->mcast_grp = vxl->mcast_grp;
4126 }
4127 zvni->vxlan_if = ifp;
4128 vlan_if = zvni_map_to_svi(vxl->access_vlan,
4129 zif->brslave_info.br_if);
4130 if (vlan_if) {
4131 zvni->vrf_id = vlan_if->vrf_id;
4132 zl3vni = zl3vni_from_vrf(
4133 vlan_if->vrf_id);
4134 if (zl3vni)
4135 listnode_add_sort(
4136 zl3vni->l2vnis, zvni);
4137 }
4138
4139 /*
4140 * Inform BGP if intf is up and mapped to
4141 * bridge.
4142 */
4143 if (if_is_operative(ifp) &&
4144 zif->brslave_info.br_if)
4145 zvni_send_add_to_client(zvni);
4146 }
4147 }
4148 }
4149 }
4150
4151 /*
4152 * See if remote VTEP matches with prefix.
4153 */
4154 static int zvni_vtep_match(struct in_addr *vtep_ip, zebra_vtep_t *zvtep)
4155 {
4156 return (IPV4_ADDR_SAME(vtep_ip, &zvtep->vtep_ip));
4157 }
4158
4159 /*
4160 * Locate remote VTEP in VNI hash table.
4161 */
4162 static zebra_vtep_t *zvni_vtep_find(zebra_vni_t *zvni, struct in_addr *vtep_ip)
4163 {
4164 zebra_vtep_t *zvtep;
4165
4166 if (!zvni)
4167 return NULL;
4168
4169 for (zvtep = zvni->vteps; zvtep; zvtep = zvtep->next) {
4170 if (zvni_vtep_match(vtep_ip, zvtep))
4171 break;
4172 }
4173
4174 return zvtep;
4175 }
4176
4177 /*
4178 * Add remote VTEP to VNI hash table.
4179 */
4180 static zebra_vtep_t *zvni_vtep_add(zebra_vni_t *zvni, struct in_addr *vtep_ip,
4181 int flood_control)
4182
4183 {
4184 zebra_vtep_t *zvtep;
4185
4186 zvtep = XCALLOC(MTYPE_ZVNI_VTEP, sizeof(zebra_vtep_t));
4187
4188 zvtep->vtep_ip = *vtep_ip;
4189 zvtep->flood_control = flood_control;
4190
4191 if (zvni->vteps)
4192 zvni->vteps->prev = zvtep;
4193 zvtep->next = zvni->vteps;
4194 zvni->vteps = zvtep;
4195
4196 return zvtep;
4197 }
4198
4199 /*
4200 * Remove remote VTEP from VNI hash table.
4201 */
4202 static int zvni_vtep_del(zebra_vni_t *zvni, zebra_vtep_t *zvtep)
4203 {
4204 if (zvtep->next)
4205 zvtep->next->prev = zvtep->prev;
4206 if (zvtep->prev)
4207 zvtep->prev->next = zvtep->next;
4208 else
4209 zvni->vteps = zvtep->next;
4210
4211 zvtep->prev = zvtep->next = NULL;
4212 XFREE(MTYPE_ZVNI_VTEP, zvtep);
4213
4214 return 0;
4215 }
4216
4217 /*
4218 * Delete all remote VTEPs for this VNI (upon VNI delete). Also
4219 * uninstall from kernel if asked to.
4220 */
4221 static int zvni_vtep_del_all(zebra_vni_t *zvni, int uninstall)
4222 {
4223 zebra_vtep_t *zvtep, *zvtep_next;
4224
4225 if (!zvni)
4226 return -1;
4227
4228 for (zvtep = zvni->vteps; zvtep; zvtep = zvtep_next) {
4229 zvtep_next = zvtep->next;
4230 if (uninstall)
4231 zvni_vtep_uninstall(zvni, &zvtep->vtep_ip);
4232 zvni_vtep_del(zvni, zvtep);
4233 }
4234
4235 return 0;
4236 }
4237
4238 /*
4239 * Install remote VTEP into the kernel if the remote VTEP has asked
4240 * for head-end-replication.
4241 */
4242 static int zvni_vtep_install(zebra_vni_t *zvni, zebra_vtep_t *zvtep)
4243 {
4244 if (is_vxlan_flooding_head_end() &&
4245 (zvtep->flood_control == VXLAN_FLOOD_HEAD_END_REPL))
4246 return kernel_add_vtep(zvni->vni, zvni->vxlan_if,
4247 &zvtep->vtep_ip);
4248 return 0;
4249 }
4250
4251 /*
4252 * Uninstall remote VTEP from the kernel.
4253 */
4254 static int zvni_vtep_uninstall(zebra_vni_t *zvni, struct in_addr *vtep_ip)
4255 {
4256 if (!zvni->vxlan_if) {
4257 zlog_debug("VNI %u hash %p couldn't be uninstalled - no intf",
4258 zvni->vni, zvni);
4259 return -1;
4260 }
4261
4262 return kernel_del_vtep(zvni->vni, zvni->vxlan_if, vtep_ip);
4263 }
4264
4265 /*
4266 * Install or uninstall flood entries in the kernel corresponding to
4267 * remote VTEPs. This is invoked upon change to BUM handling.
4268 */
4269 static void zvni_handle_flooding_remote_vteps(struct hash_bucket *bucket,
4270 void *zvrf)
4271 {
4272 zebra_vni_t *zvni;
4273 zebra_vtep_t *zvtep;
4274
4275 zvni = (zebra_vni_t *)bucket->data;
4276 if (!zvni)
4277 return;
4278
4279 for (zvtep = zvni->vteps; zvtep; zvtep = zvtep->next) {
4280 if (is_vxlan_flooding_head_end())
4281 zvni_vtep_install(zvni, zvtep);
4282 else
4283 zvni_vtep_uninstall(zvni, &zvtep->vtep_ip);
4284 }
4285 }
4286
4287 /*
4288 * Cleanup VNI/VTEP and update kernel
4289 */
4290 static void zvni_cleanup_all(struct hash_bucket *bucket, void *arg)
4291 {
4292 zebra_vni_t *zvni = NULL;
4293 zebra_l3vni_t *zl3vni = NULL;
4294 struct zebra_vrf *zvrf = (struct zebra_vrf *)arg;
4295
4296 zvni = (zebra_vni_t *)bucket->data;
4297
4298 /* remove from l3-vni list */
4299 if (zvrf->l3vni)
4300 zl3vni = zl3vni_lookup(zvrf->l3vni);
4301 if (zl3vni)
4302 listnode_delete(zl3vni->l2vnis, zvni);
4303
4304 /* Free up all neighbors and MACs, if any. */
4305 zvni_neigh_del_all(zvni, 1, 0, DEL_ALL_NEIGH);
4306 zvni_mac_del_all(zvni, 1, 0, DEL_ALL_MAC);
4307
4308 /* Free up all remote VTEPs, if any. */
4309 zvni_vtep_del_all(zvni, 1);
4310
4311 /* Delete the hash entry. */
4312 zvni_del(zvni);
4313 }
4314
4315 /* cleanup L3VNI */
4316 static void zl3vni_cleanup_all(struct hash_bucket *bucket, void *args)
4317 {
4318 zebra_l3vni_t *zl3vni = NULL;
4319
4320 zl3vni = (zebra_l3vni_t *)bucket->data;
4321
4322 zebra_vxlan_process_l3vni_oper_down(zl3vni);
4323 }
4324
4325 static void rb_find_or_add_host(struct host_rb_tree_entry *hrbe,
4326 struct prefix *host)
4327 {
4328 struct host_rb_entry lookup;
4329 struct host_rb_entry *hle;
4330
4331 memset(&lookup, 0, sizeof(lookup));
4332 memcpy(&lookup.p, host, sizeof(*host));
4333
4334 hle = RB_FIND(host_rb_tree_entry, hrbe, &lookup);
4335 if (hle)
4336 return;
4337
4338 hle = XCALLOC(MTYPE_HOST_PREFIX, sizeof(struct host_rb_entry));
4339 memcpy(hle, &lookup, sizeof(lookup));
4340
4341 RB_INSERT(host_rb_tree_entry, hrbe, hle);
4342 }
4343
4344 static void rb_delete_host(struct host_rb_tree_entry *hrbe, struct prefix *host)
4345 {
4346 struct host_rb_entry lookup;
4347 struct host_rb_entry *hle;
4348
4349 memset(&lookup, 0, sizeof(lookup));
4350 memcpy(&lookup.p, host, sizeof(*host));
4351
4352 hle = RB_FIND(host_rb_tree_entry, hrbe, &lookup);
4353 if (hle) {
4354 RB_REMOVE(host_rb_tree_entry, hrbe, hle);
4355 XFREE(MTYPE_HOST_PREFIX, hle);
4356 }
4357
4358 return;
4359 }
4360
4361 /*
4362 * Look up MAC hash entry.
4363 */
4364 static zebra_mac_t *zl3vni_rmac_lookup(zebra_l3vni_t *zl3vni,
4365 struct ethaddr *rmac)
4366 {
4367 zebra_mac_t tmp;
4368 zebra_mac_t *pmac;
4369
4370 memset(&tmp, 0, sizeof(tmp));
4371 memcpy(&tmp.macaddr, rmac, ETH_ALEN);
4372 pmac = hash_lookup(zl3vni->rmac_table, &tmp);
4373
4374 return pmac;
4375 }
4376
4377 /*
4378 * Callback to allocate RMAC hash entry.
4379 */
4380 static void *zl3vni_rmac_alloc(void *p)
4381 {
4382 const zebra_mac_t *tmp_rmac = p;
4383 zebra_mac_t *zrmac;
4384
4385 zrmac = XCALLOC(MTYPE_MAC, sizeof(zebra_mac_t));
4386 *zrmac = *tmp_rmac;
4387
4388 return ((void *)zrmac);
4389 }
4390
4391 /*
4392 * Add RMAC entry to l3-vni
4393 */
4394 static zebra_mac_t *zl3vni_rmac_add(zebra_l3vni_t *zl3vni, struct ethaddr *rmac)
4395 {
4396 zebra_mac_t tmp_rmac;
4397 zebra_mac_t *zrmac = NULL;
4398
4399 memset(&tmp_rmac, 0, sizeof(zebra_mac_t));
4400 memcpy(&tmp_rmac.macaddr, rmac, ETH_ALEN);
4401 zrmac = hash_get(zl3vni->rmac_table, &tmp_rmac, zl3vni_rmac_alloc);
4402 assert(zrmac);
4403
4404 RB_INIT(host_rb_tree_entry, &zrmac->host_rb);
4405
4406 SET_FLAG(zrmac->flags, ZEBRA_MAC_REMOTE);
4407 SET_FLAG(zrmac->flags, ZEBRA_MAC_REMOTE_RMAC);
4408
4409 return zrmac;
4410 }
4411
4412 /*
4413 * Delete MAC entry.
4414 */
4415 static int zl3vni_rmac_del(zebra_l3vni_t *zl3vni, zebra_mac_t *zrmac)
4416 {
4417 zebra_mac_t *tmp_rmac;
4418 struct host_rb_entry *hle;
4419
4420 while (!RB_EMPTY(host_rb_tree_entry, &zrmac->host_rb)) {
4421 hle = RB_ROOT(host_rb_tree_entry, &zrmac->host_rb);
4422
4423 RB_REMOVE(host_rb_tree_entry, &zrmac->host_rb, hle);
4424 XFREE(MTYPE_HOST_PREFIX, hle);
4425 }
4426
4427 tmp_rmac = hash_release(zl3vni->rmac_table, zrmac);
4428 XFREE(MTYPE_MAC, tmp_rmac);
4429
4430 return 0;
4431 }
4432
4433 /*
4434 * Install remote RMAC into the kernel.
4435 */
4436 static int zl3vni_rmac_install(zebra_l3vni_t *zl3vni, zebra_mac_t *zrmac)
4437 {
4438 struct zebra_if *zif = NULL;
4439 struct zebra_l2info_vxlan *vxl = NULL;
4440
4441 if (!(CHECK_FLAG(zrmac->flags, ZEBRA_MAC_REMOTE))
4442 || !(CHECK_FLAG(zrmac->flags, ZEBRA_MAC_REMOTE_RMAC)))
4443 return 0;
4444
4445 zif = zl3vni->vxlan_if->info;
4446 if (!zif)
4447 return -1;
4448
4449 vxl = &zif->l2info.vxl;
4450
4451 return kernel_add_mac(zl3vni->vxlan_if, vxl->access_vlan,
4452 &zrmac->macaddr, zrmac->fwd_info.r_vtep_ip, 0);
4453 }
4454
4455 /*
4456 * Uninstall remote RMAC from the kernel.
4457 */
4458 static int zl3vni_rmac_uninstall(zebra_l3vni_t *zl3vni, zebra_mac_t *zrmac)
4459 {
4460 char buf[ETHER_ADDR_STRLEN];
4461 struct zebra_if *zif = NULL;
4462 struct zebra_l2info_vxlan *vxl = NULL;
4463
4464 if (!(CHECK_FLAG(zrmac->flags, ZEBRA_MAC_REMOTE))
4465 || !(CHECK_FLAG(zrmac->flags, ZEBRA_MAC_REMOTE_RMAC)))
4466 return 0;
4467
4468 if (!zl3vni->vxlan_if) {
4469 zlog_debug(
4470 "RMAC %s on L3-VNI %u hash %p couldn't be uninstalled - no vxlan_if",
4471 prefix_mac2str(&zrmac->macaddr, buf, sizeof(buf)),
4472 zl3vni->vni, zl3vni);
4473 return -1;
4474 }
4475
4476 zif = zl3vni->vxlan_if->info;
4477 if (!zif)
4478 return -1;
4479
4480 vxl = &zif->l2info.vxl;
4481
4482 return kernel_del_mac(zl3vni->vxlan_if, vxl->access_vlan,
4483 &zrmac->macaddr, zrmac->fwd_info.r_vtep_ip);
4484 }
4485
4486 /* handle rmac add */
4487 static int zl3vni_remote_rmac_add(zebra_l3vni_t *zl3vni, struct ethaddr *rmac,
4488 struct ipaddr *vtep_ip,
4489 struct prefix *host_prefix)
4490 {
4491 char buf[ETHER_ADDR_STRLEN];
4492 char buf1[INET6_ADDRSTRLEN];
4493 zebra_mac_t *zrmac = NULL;
4494
4495 zrmac = zl3vni_rmac_lookup(zl3vni, rmac);
4496 if (!zrmac) {
4497
4498 zrmac = zl3vni_rmac_add(zl3vni, rmac);
4499 if (!zrmac) {
4500 zlog_debug(
4501 "Failed to add RMAC %s L3VNI %u Remote VTEP %s",
4502 prefix_mac2str(rmac, buf, sizeof(buf)),
4503 zl3vni->vni,
4504 ipaddr2str(vtep_ip, buf1, sizeof(buf1)));
4505 return -1;
4506 }
4507 memset(&zrmac->fwd_info, 0, sizeof(zrmac->fwd_info));
4508 zrmac->fwd_info.r_vtep_ip = vtep_ip->ipaddr_v4;
4509
4510 /* Send RMAC for FPM processing */
4511 hook_call(zebra_rmac_update, zrmac, zl3vni, false,
4512 "new RMAC added");
4513
4514 /* install rmac in kernel */
4515 zl3vni_rmac_install(zl3vni, zrmac);
4516 }
4517
4518 rb_find_or_add_host(&zrmac->host_rb, host_prefix);
4519
4520 return 0;
4521 }
4522
4523
4524 /* handle rmac delete */
4525 static void zl3vni_remote_rmac_del(zebra_l3vni_t *zl3vni, zebra_mac_t *zrmac,
4526 struct prefix *host_prefix)
4527 {
4528 rb_delete_host(&zrmac->host_rb, host_prefix);
4529
4530 if (RB_EMPTY(host_rb_tree_entry, &zrmac->host_rb)) {
4531 /* uninstall from kernel */
4532 zl3vni_rmac_uninstall(zl3vni, zrmac);
4533
4534 /* Send RMAC for FPM processing */
4535 hook_call(zebra_rmac_update, zrmac, zl3vni, true,
4536 "RMAC deleted");
4537
4538 /* del the rmac entry */
4539 zl3vni_rmac_del(zl3vni, zrmac);
4540 }
4541 }
4542
4543 /*
4544 * Look up nh hash entry on a l3-vni.
4545 */
4546 static zebra_neigh_t *zl3vni_nh_lookup(zebra_l3vni_t *zl3vni, struct ipaddr *ip)
4547 {
4548 zebra_neigh_t tmp;
4549 zebra_neigh_t *n;
4550
4551 memset(&tmp, 0, sizeof(tmp));
4552 memcpy(&tmp.ip, ip, sizeof(struct ipaddr));
4553 n = hash_lookup(zl3vni->nh_table, &tmp);
4554
4555 return n;
4556 }
4557
4558
4559 /*
4560 * Callback to allocate NH hash entry on L3-VNI.
4561 */
4562 static void *zl3vni_nh_alloc(void *p)
4563 {
4564 const zebra_neigh_t *tmp_n = p;
4565 zebra_neigh_t *n;
4566
4567 n = XCALLOC(MTYPE_NEIGH, sizeof(zebra_neigh_t));
4568 *n = *tmp_n;
4569
4570 return ((void *)n);
4571 }
4572
4573 /*
4574 * Add neighbor entry.
4575 */
4576 static zebra_neigh_t *zl3vni_nh_add(zebra_l3vni_t *zl3vni, struct ipaddr *ip,
4577 struct ethaddr *mac)
4578 {
4579 zebra_neigh_t tmp_n;
4580 zebra_neigh_t *n = NULL;
4581
4582 memset(&tmp_n, 0, sizeof(zebra_neigh_t));
4583 memcpy(&tmp_n.ip, ip, sizeof(struct ipaddr));
4584 n = hash_get(zl3vni->nh_table, &tmp_n, zl3vni_nh_alloc);
4585 assert(n);
4586
4587 RB_INIT(host_rb_tree_entry, &n->host_rb);
4588
4589 memcpy(&n->emac, mac, ETH_ALEN);
4590 SET_FLAG(n->flags, ZEBRA_NEIGH_REMOTE);
4591 SET_FLAG(n->flags, ZEBRA_NEIGH_REMOTE_NH);
4592
4593 return n;
4594 }
4595
4596 /*
4597 * Delete neighbor entry.
4598 */
4599 static int zl3vni_nh_del(zebra_l3vni_t *zl3vni, zebra_neigh_t *n)
4600 {
4601 zebra_neigh_t *tmp_n;
4602 struct host_rb_entry *hle;
4603
4604 while (!RB_EMPTY(host_rb_tree_entry, &n->host_rb)) {
4605 hle = RB_ROOT(host_rb_tree_entry, &n->host_rb);
4606
4607 RB_REMOVE(host_rb_tree_entry, &n->host_rb, hle);
4608 XFREE(MTYPE_HOST_PREFIX, hle);
4609 }
4610
4611 tmp_n = hash_release(zl3vni->nh_table, n);
4612 XFREE(MTYPE_NEIGH, tmp_n);
4613
4614 return 0;
4615 }
4616
4617 /*
4618 * Install remote nh as neigh into the kernel.
4619 */
4620 static int zl3vni_nh_install(zebra_l3vni_t *zl3vni, zebra_neigh_t *n)
4621 {
4622 #ifdef GNU_LINUX
4623 uint8_t flags;
4624 #endif
4625 int ret = 0;
4626
4627 if (!is_l3vni_oper_up(zl3vni))
4628 return -1;
4629
4630 if (!(n->flags & ZEBRA_NEIGH_REMOTE)
4631 || !(n->flags & ZEBRA_NEIGH_REMOTE_NH))
4632 return 0;
4633 #ifdef GNU_LINUX
4634 flags = NTF_EXT_LEARNED;
4635 if (n->flags & ZEBRA_NEIGH_ROUTER_FLAG)
4636 flags |= NTF_ROUTER;
4637 ret = kernel_add_neigh(zl3vni->svi_if, &n->ip, &n->emac, flags);
4638 #endif
4639 return ret;
4640 }
4641
4642 /*
4643 * Uninstall remote nh from the kernel.
4644 */
4645 static int zl3vni_nh_uninstall(zebra_l3vni_t *zl3vni, zebra_neigh_t *n)
4646 {
4647 if (!(n->flags & ZEBRA_NEIGH_REMOTE)
4648 || !(n->flags & ZEBRA_NEIGH_REMOTE_NH))
4649 return 0;
4650
4651 if (!zl3vni->svi_if || !if_is_operative(zl3vni->svi_if))
4652 return 0;
4653
4654 return kernel_del_neigh(zl3vni->svi_if, &n->ip);
4655 }
4656
4657 /* add remote vtep as a neigh entry */
4658 static int zl3vni_remote_nh_add(zebra_l3vni_t *zl3vni, struct ipaddr *vtep_ip,
4659 struct ethaddr *rmac,
4660 struct prefix *host_prefix)
4661 {
4662 char buf[ETHER_ADDR_STRLEN];
4663 char buf1[INET6_ADDRSTRLEN];
4664 zebra_neigh_t *nh = NULL;
4665
4666 nh = zl3vni_nh_lookup(zl3vni, vtep_ip);
4667 if (!nh) {
4668 nh = zl3vni_nh_add(zl3vni, vtep_ip, rmac);
4669 if (!nh) {
4670
4671 zlog_debug(
4672 "Failed to add NH as Neigh (IP %s MAC %s L3-VNI %u)",
4673 ipaddr2str(vtep_ip, buf1, sizeof(buf1)),
4674 prefix_mac2str(rmac, buf, sizeof(buf)),
4675 zl3vni->vni);
4676 return -1;
4677 }
4678
4679 /* install the nh neigh in kernel */
4680 zl3vni_nh_install(zl3vni, nh);
4681 }
4682
4683 rb_find_or_add_host(&nh->host_rb, host_prefix);
4684
4685 return 0;
4686 }
4687
4688 /* handle nh neigh delete */
4689 static void zl3vni_remote_nh_del(zebra_l3vni_t *zl3vni, zebra_neigh_t *nh,
4690 struct prefix *host_prefix)
4691 {
4692 rb_delete_host(&nh->host_rb, host_prefix);
4693
4694 if (RB_EMPTY(host_rb_tree_entry, &nh->host_rb)) {
4695 /* uninstall from kernel */
4696 zl3vni_nh_uninstall(zl3vni, nh);
4697
4698 /* delete the nh entry */
4699 zl3vni_nh_del(zl3vni, nh);
4700 }
4701 }
4702
4703 /* handle neigh update from kernel - the only thing of interest is to
4704 * readd stale entries.
4705 */
4706 static int zl3vni_local_nh_add_update(zebra_l3vni_t *zl3vni, struct ipaddr *ip,
4707 uint16_t state)
4708 {
4709 #ifdef GNU_LINUX
4710 zebra_neigh_t *n = NULL;
4711
4712 n = zl3vni_nh_lookup(zl3vni, ip);
4713 if (!n)
4714 return 0;
4715
4716 /* all next hop neigh are remote and installed by frr.
4717 * If the kernel has aged this entry, re-install.
4718 */
4719 if (state & NUD_STALE)
4720 zl3vni_nh_install(zl3vni, n);
4721 #endif
4722 return 0;
4723 }
4724
4725 /* handle neigh delete from kernel */
4726 static int zl3vni_local_nh_del(zebra_l3vni_t *zl3vni, struct ipaddr *ip)
4727 {
4728 zebra_neigh_t *n = NULL;
4729
4730 n = zl3vni_nh_lookup(zl3vni, ip);
4731 if (!n)
4732 return 0;
4733
4734 /* all next hop neigh are remote and installed by frr.
4735 * If we get an age out notification for these neigh entries, we have to
4736 * install it back
4737 */
4738 zl3vni_nh_install(zl3vni, n);
4739
4740 return 0;
4741 }
4742
4743 /*
4744 * Hash function for L3 VNI.
4745 */
4746 static unsigned int l3vni_hash_keymake(const void *p)
4747 {
4748 const zebra_l3vni_t *zl3vni = p;
4749
4750 return jhash_1word(zl3vni->vni, 0);
4751 }
4752
4753 /*
4754 * Compare 2 L3 VNI hash entries.
4755 */
4756 static bool l3vni_hash_cmp(const void *p1, const void *p2)
4757 {
4758 const zebra_l3vni_t *zl3vni1 = p1;
4759 const zebra_l3vni_t *zl3vni2 = p2;
4760
4761 return (zl3vni1->vni == zl3vni2->vni);
4762 }
4763
4764 /*
4765 * Callback to allocate L3 VNI hash entry.
4766 */
4767 static void *zl3vni_alloc(void *p)
4768 {
4769 zebra_l3vni_t *zl3vni = NULL;
4770 const zebra_l3vni_t *tmp_l3vni = p;
4771
4772 zl3vni = XCALLOC(MTYPE_ZL3VNI, sizeof(zebra_l3vni_t));
4773 zl3vni->vni = tmp_l3vni->vni;
4774 return ((void *)zl3vni);
4775 }
4776
4777 /*
4778 * Look up L3 VNI hash entry.
4779 */
4780 static zebra_l3vni_t *zl3vni_lookup(vni_t vni)
4781 {
4782 zebra_l3vni_t tmp_l3vni;
4783 zebra_l3vni_t *zl3vni = NULL;
4784
4785 memset(&tmp_l3vni, 0, sizeof(zebra_l3vni_t));
4786 tmp_l3vni.vni = vni;
4787 zl3vni = hash_lookup(zrouter.l3vni_table, &tmp_l3vni);
4788
4789 return zl3vni;
4790 }
4791
4792 /*
4793 * Add L3 VNI hash entry.
4794 */
4795 static zebra_l3vni_t *zl3vni_add(vni_t vni, vrf_id_t vrf_id)
4796 {
4797 zebra_l3vni_t tmp_zl3vni;
4798 zebra_l3vni_t *zl3vni = NULL;
4799
4800 memset(&tmp_zl3vni, 0, sizeof(zebra_l3vni_t));
4801 tmp_zl3vni.vni = vni;
4802
4803 zl3vni = hash_get(zrouter.l3vni_table, &tmp_zl3vni, zl3vni_alloc);
4804 assert(zl3vni);
4805
4806 zl3vni->vrf_id = vrf_id;
4807 zl3vni->svi_if = NULL;
4808 zl3vni->vxlan_if = NULL;
4809 zl3vni->l2vnis = list_new();
4810 zl3vni->l2vnis->cmp = vni_list_cmp;
4811
4812 /* Create hash table for remote RMAC */
4813 zl3vni->rmac_table = hash_create(mac_hash_keymake, mac_cmp,
4814 "Zebra L3-VNI RMAC-Table");
4815
4816 /* Create hash table for neighbors */
4817 zl3vni->nh_table = hash_create(neigh_hash_keymake, neigh_cmp,
4818 "Zebra L3-VNI next-hop table");
4819
4820 return zl3vni;
4821 }
4822
4823 /*
4824 * Delete L3 VNI hash entry.
4825 */
4826 static int zl3vni_del(zebra_l3vni_t *zl3vni)
4827 {
4828 zebra_l3vni_t *tmp_zl3vni;
4829
4830 /* free the list of l2vnis */
4831 list_delete(&zl3vni->l2vnis);
4832 zl3vni->l2vnis = NULL;
4833
4834 /* Free the rmac table */
4835 hash_free(zl3vni->rmac_table);
4836 zl3vni->rmac_table = NULL;
4837
4838 /* Free the nh table */
4839 hash_free(zl3vni->nh_table);
4840 zl3vni->nh_table = NULL;
4841
4842 /* Free the VNI hash entry and allocated memory. */
4843 tmp_zl3vni = hash_release(zrouter.l3vni_table, zl3vni);
4844 XFREE(MTYPE_ZL3VNI, tmp_zl3vni);
4845
4846 return 0;
4847 }
4848
4849 struct interface *zl3vni_map_to_vxlan_if(zebra_l3vni_t *zl3vni)
4850 {
4851 struct zebra_ns *zns = NULL;
4852 struct route_node *rn = NULL;
4853 struct interface *ifp = NULL;
4854
4855 /* loop through all vxlan-interface */
4856 zns = zebra_ns_lookup(NS_DEFAULT);
4857 for (rn = route_top(zns->if_table); rn; rn = route_next(rn)) {
4858
4859 struct zebra_if *zif = NULL;
4860 struct zebra_l2info_vxlan *vxl = NULL;
4861
4862 ifp = (struct interface *)rn->info;
4863 if (!ifp)
4864 continue;
4865
4866 zif = ifp->info;
4867 if (!zif || zif->zif_type != ZEBRA_IF_VXLAN)
4868 continue;
4869
4870 vxl = &zif->l2info.vxl;
4871 if (vxl->vni == zl3vni->vni) {
4872 zl3vni->local_vtep_ip = vxl->vtep_ip;
4873 return ifp;
4874 }
4875 }
4876
4877 return NULL;
4878 }
4879
4880 struct interface *zl3vni_map_to_svi_if(zebra_l3vni_t *zl3vni)
4881 {
4882 struct zebra_if *zif = NULL; /* zebra_if for vxlan_if */
4883 struct zebra_l2info_vxlan *vxl = NULL; /* l2 info for vxlan_if */
4884
4885 if (!zl3vni)
4886 return NULL;
4887
4888 if (!zl3vni->vxlan_if)
4889 return NULL;
4890
4891 zif = zl3vni->vxlan_if->info;
4892 if (!zif)
4893 return NULL;
4894
4895 vxl = &zif->l2info.vxl;
4896
4897 return zvni_map_to_svi(vxl->access_vlan, zif->brslave_info.br_if);
4898 }
4899
4900 zebra_l3vni_t *zl3vni_from_vrf(vrf_id_t vrf_id)
4901 {
4902 struct zebra_vrf *zvrf = NULL;
4903
4904 zvrf = zebra_vrf_lookup_by_id(vrf_id);
4905 if (!zvrf)
4906 return NULL;
4907
4908 return zl3vni_lookup(zvrf->l3vni);
4909 }
4910
4911 /*
4912 * Map SVI and associated bridge to a VNI. This is invoked upon getting
4913 * neighbor notifications, to see if they are of interest.
4914 */
4915 static zebra_l3vni_t *zl3vni_from_svi(struct interface *ifp,
4916 struct interface *br_if)
4917 {
4918 int found = 0;
4919 vlanid_t vid = 0;
4920 uint8_t bridge_vlan_aware = 0;
4921 zebra_l3vni_t *zl3vni = NULL;
4922 struct zebra_ns *zns = NULL;
4923 struct route_node *rn = NULL;
4924 struct zebra_if *zif = NULL;
4925 struct interface *tmp_if = NULL;
4926 struct zebra_l2info_bridge *br = NULL;
4927 struct zebra_l2info_vxlan *vxl = NULL;
4928
4929 if (!br_if)
4930 return NULL;
4931
4932 /* Make sure the linked interface is a bridge. */
4933 if (!IS_ZEBRA_IF_BRIDGE(br_if))
4934 return NULL;
4935
4936 /* Determine if bridge is VLAN-aware or not */
4937 zif = br_if->info;
4938 assert(zif);
4939 br = &zif->l2info.br;
4940 bridge_vlan_aware = br->vlan_aware;
4941 if (bridge_vlan_aware) {
4942 struct zebra_l2info_vlan *vl;
4943
4944 if (!IS_ZEBRA_IF_VLAN(ifp))
4945 return NULL;
4946
4947 zif = ifp->info;
4948 assert(zif);
4949 vl = &zif->l2info.vl;
4950 vid = vl->vid;
4951 }
4952
4953 /* See if this interface (or interface plus VLAN Id) maps to a VxLAN */
4954 /* TODO: Optimize with a hash. */
4955 zns = zebra_ns_lookup(NS_DEFAULT);
4956 for (rn = route_top(zns->if_table); rn; rn = route_next(rn)) {
4957 tmp_if = (struct interface *)rn->info;
4958 if (!tmp_if)
4959 continue;
4960 zif = tmp_if->info;
4961 if (!zif || zif->zif_type != ZEBRA_IF_VXLAN)
4962 continue;
4963 if (!if_is_operative(tmp_if))
4964 continue;
4965 vxl = &zif->l2info.vxl;
4966
4967 if (zif->brslave_info.br_if != br_if)
4968 continue;
4969
4970 if (!bridge_vlan_aware || vxl->access_vlan == vid) {
4971 found = 1;
4972 break;
4973 }
4974 }
4975
4976 if (!found)
4977 return NULL;
4978
4979 zl3vni = zl3vni_lookup(vxl->vni);
4980 return zl3vni;
4981 }
4982
4983 /*
4984 * Inform BGP about l3-vni.
4985 */
4986 static int zl3vni_send_add_to_client(zebra_l3vni_t *zl3vni)
4987 {
4988 struct stream *s = NULL;
4989 struct zserv *client = NULL;
4990 struct ethaddr rmac;
4991 char buf[ETHER_ADDR_STRLEN];
4992
4993 client = zserv_find_client(ZEBRA_ROUTE_BGP, 0);
4994 /* BGP may not be running. */
4995 if (!client)
4996 return 0;
4997
4998 /* get the rmac */
4999 memset(&rmac, 0, sizeof(struct ethaddr));
5000 zl3vni_get_rmac(zl3vni, &rmac);
5001
5002 s = stream_new(ZEBRA_MAX_PACKET_SIZ);
5003
5004 zclient_create_header(s, ZEBRA_L3VNI_ADD, zl3vni_vrf_id(zl3vni));
5005 stream_putl(s, zl3vni->vni);
5006 stream_put(s, &rmac, sizeof(struct ethaddr));
5007 stream_put_in_addr(s, &zl3vni->local_vtep_ip);
5008 stream_put(s, &zl3vni->filter, sizeof(int));
5009 stream_putl(s, zl3vni->svi_if->ifindex);
5010
5011 /* Write packet size. */
5012 stream_putw_at(s, 0, stream_get_endp(s));
5013
5014 if (IS_ZEBRA_DEBUG_VXLAN)
5015 zlog_debug(
5016 "Send L3_VNI_ADD %u VRF %s RMAC %s local-ip %s filter %s to %s",
5017 zl3vni->vni, vrf_id_to_name(zl3vni_vrf_id(zl3vni)),
5018 prefix_mac2str(&rmac, buf, sizeof(buf)),
5019 inet_ntoa(zl3vni->local_vtep_ip),
5020 CHECK_FLAG(zl3vni->filter, PREFIX_ROUTES_ONLY)
5021 ? "prefix-routes-only"
5022 : "none",
5023 zebra_route_string(client->proto));
5024
5025 client->l3vniadd_cnt++;
5026 return zserv_send_message(client, s);
5027 }
5028
5029 /*
5030 * Inform BGP about local l3-VNI deletion.
5031 */
5032 static int zl3vni_send_del_to_client(zebra_l3vni_t *zl3vni)
5033 {
5034 struct stream *s = NULL;
5035 struct zserv *client = NULL;
5036
5037 client = zserv_find_client(ZEBRA_ROUTE_BGP, 0);
5038 /* BGP may not be running. */
5039 if (!client)
5040 return 0;
5041
5042 s = stream_new(ZEBRA_MAX_PACKET_SIZ);
5043
5044 zclient_create_header(s, ZEBRA_L3VNI_DEL, zl3vni_vrf_id(zl3vni));
5045 stream_putl(s, zl3vni->vni);
5046
5047 /* Write packet size. */
5048 stream_putw_at(s, 0, stream_get_endp(s));
5049
5050 if (IS_ZEBRA_DEBUG_VXLAN)
5051 zlog_debug("Send L3_VNI_DEL %u VRF %s to %s", zl3vni->vni,
5052 vrf_id_to_name(zl3vni_vrf_id(zl3vni)),
5053 zebra_route_string(client->proto));
5054
5055 client->l3vnidel_cnt++;
5056 return zserv_send_message(client, s);
5057 }
5058
5059 static void zebra_vxlan_process_l3vni_oper_up(zebra_l3vni_t *zl3vni)
5060 {
5061 if (!zl3vni)
5062 return;
5063
5064 /* send l3vni add to BGP */
5065 zl3vni_send_add_to_client(zl3vni);
5066 }
5067
5068 static void zebra_vxlan_process_l3vni_oper_down(zebra_l3vni_t *zl3vni)
5069 {
5070 if (!zl3vni)
5071 return;
5072
5073 /* send l3-vni del to BGP*/
5074 zl3vni_send_del_to_client(zl3vni);
5075 }
5076
5077 static void zvni_add_to_l3vni_list(struct hash_bucket *bucket, void *ctxt)
5078 {
5079 zebra_vni_t *zvni = (zebra_vni_t *)bucket->data;
5080 zebra_l3vni_t *zl3vni = (zebra_l3vni_t *)ctxt;
5081
5082 if (zvni->vrf_id == zl3vni_vrf_id(zl3vni))
5083 listnode_add_sort(zl3vni->l2vnis, zvni);
5084 }
5085
5086 /*
5087 * handle transition of vni from l2 to l3 and vice versa
5088 */
5089 static int zebra_vxlan_handle_vni_transition(struct zebra_vrf *zvrf, vni_t vni,
5090 int add)
5091 {
5092 zebra_vni_t *zvni = NULL;
5093
5094 /* There is a possibility that VNI notification was already received
5095 * from kernel and we programmed it as L2-VNI
5096 * In such a case we need to delete this L2-VNI first, so
5097 * that it can be reprogrammed as L3-VNI in the system. It is also
5098 * possible that the vrf-vni mapping is removed from FRR while the vxlan
5099 * interface is still present in kernel. In this case to keep it
5100 * symmetric, we will delete the l3-vni and reprogram it as l2-vni
5101 */
5102 if (add) {
5103 /* Locate hash entry */
5104 zvni = zvni_lookup(vni);
5105 if (!zvni)
5106 return 0;
5107
5108 if (IS_ZEBRA_DEBUG_VXLAN)
5109 zlog_debug("Del L2-VNI %u - transition to L3-VNI", vni);
5110
5111 /* Delete VNI from BGP. */
5112 zvni_send_del_to_client(zvni->vni);
5113
5114 /* Free up all neighbors and MAC, if any. */
5115 zvni_neigh_del_all(zvni, 0, 0, DEL_ALL_NEIGH);
5116 zvni_mac_del_all(zvni, 0, 0, DEL_ALL_MAC);
5117
5118 /* Free up all remote VTEPs, if any. */
5119 zvni_vtep_del_all(zvni, 0);
5120
5121 /* Delete the hash entry. */
5122 if (zvni_del(zvni)) {
5123 flog_err(EC_ZEBRA_VNI_DEL_FAILED,
5124 "Failed to del VNI hash %p, VNI %u", zvni,
5125 zvni->vni);
5126 return -1;
5127 }
5128 } else {
5129 /* TODO_MITESH: This needs to be thought through. We don't have
5130 * enough information at this point to reprogram the vni as
5131 * l2-vni. One way is to store the required info in l3-vni and
5132 * used it solely for this purpose
5133 */
5134 }
5135
5136 return 0;
5137 }
5138
5139 /* delete and uninstall rmac hash entry */
5140 static void zl3vni_del_rmac_hash_entry(struct hash_bucket *bucket, void *ctx)
5141 {
5142 zebra_mac_t *zrmac = NULL;
5143 zebra_l3vni_t *zl3vni = NULL;
5144
5145 zrmac = (zebra_mac_t *)bucket->data;
5146 zl3vni = (zebra_l3vni_t *)ctx;
5147 zl3vni_rmac_uninstall(zl3vni, zrmac);
5148
5149 /* Send RMAC for FPM processing */
5150 hook_call(zebra_rmac_update, zrmac, zl3vni, true, "RMAC deleted");
5151
5152 zl3vni_rmac_del(zl3vni, zrmac);
5153 }
5154
5155 /* delete and uninstall nh hash entry */
5156 static void zl3vni_del_nh_hash_entry(struct hash_bucket *bucket, void *ctx)
5157 {
5158 zebra_neigh_t *n = NULL;
5159 zebra_l3vni_t *zl3vni = NULL;
5160
5161 n = (zebra_neigh_t *)bucket->data;
5162 zl3vni = (zebra_l3vni_t *)ctx;
5163 zl3vni_nh_uninstall(zl3vni, n);
5164 zl3vni_nh_del(zl3vni, n);
5165 }
5166
5167 static int ip_prefix_send_to_client(vrf_id_t vrf_id, struct prefix *p,
5168 uint16_t cmd)
5169 {
5170 struct zserv *client = NULL;
5171 struct stream *s = NULL;
5172 char buf[PREFIX_STRLEN];
5173
5174 client = zserv_find_client(ZEBRA_ROUTE_BGP, 0);
5175 /* BGP may not be running. */
5176 if (!client)
5177 return 0;
5178
5179 s = stream_new(ZEBRA_MAX_PACKET_SIZ);
5180
5181 zclient_create_header(s, cmd, vrf_id);
5182 stream_put(s, p, sizeof(struct prefix));
5183
5184 /* Write packet size. */
5185 stream_putw_at(s, 0, stream_get_endp(s));
5186
5187 if (IS_ZEBRA_DEBUG_VXLAN)
5188 zlog_debug("Send ip prefix %s %s on vrf %s",
5189 prefix2str(p, buf, sizeof(buf)),
5190 (cmd == ZEBRA_IP_PREFIX_ROUTE_ADD) ? "ADD" : "DEL",
5191 vrf_id_to_name(vrf_id));
5192
5193 if (cmd == ZEBRA_IP_PREFIX_ROUTE_ADD)
5194 client->prefixadd_cnt++;
5195 else
5196 client->prefixdel_cnt++;
5197
5198 return zserv_send_message(client, s);
5199 }
5200
5201 /* re-add remote rmac if needed */
5202 static int zebra_vxlan_readd_remote_rmac(zebra_l3vni_t *zl3vni,
5203 struct ethaddr *rmac)
5204 {
5205 char buf[ETHER_ADDR_STRLEN];
5206 zebra_mac_t *zrmac = NULL;
5207
5208 zrmac = zl3vni_rmac_lookup(zl3vni, rmac);
5209 if (!zrmac)
5210 return 0;
5211
5212 if (IS_ZEBRA_DEBUG_VXLAN)
5213 zlog_debug("Del remote RMAC %s L3VNI %u - readd",
5214 prefix_mac2str(rmac, buf, sizeof(buf)), zl3vni->vni);
5215
5216 zl3vni_rmac_install(zl3vni, zrmac);
5217 return 0;
5218 }
5219
5220 /* Process a remote MACIP add from BGP. */
5221 static void process_remote_macip_add(vni_t vni,
5222 struct ethaddr *macaddr,
5223 uint16_t ipa_len,
5224 struct ipaddr *ipaddr,
5225 uint8_t flags,
5226 uint32_t seq,
5227 struct in_addr vtep_ip)
5228 {
5229 zebra_vni_t *zvni;
5230 zebra_vtep_t *zvtep;
5231 zebra_mac_t *mac = NULL, *old_mac = NULL;
5232 zebra_neigh_t *n = NULL;
5233 int update_mac = 0, update_neigh = 0;
5234 char buf[ETHER_ADDR_STRLEN];
5235 char buf1[INET6_ADDRSTRLEN];
5236 struct interface *ifp = NULL;
5237 struct zebra_if *zif = NULL;
5238 struct zebra_vrf *zvrf;
5239 uint32_t tmp_seq;
5240 bool sticky;
5241 bool remote_gw;
5242 bool is_router;
5243 bool do_dad = false;
5244 bool is_dup_detect = false;
5245
5246 /* Locate VNI hash entry - expected to exist. */
5247 zvni = zvni_lookup(vni);
5248 if (!zvni) {
5249 zlog_warn("Unknown VNI %u upon remote MACIP ADD", vni);
5250 return;
5251 }
5252
5253 ifp = zvni->vxlan_if;
5254 if (ifp)
5255 zif = ifp->info;
5256 if (!ifp ||
5257 !if_is_operative(ifp) ||
5258 !zif ||
5259 !zif->brslave_info.br_if) {
5260 zlog_warn("Ignoring remote MACIP ADD VNI %u, invalid interface state or info",
5261 vni);
5262 return;
5263 }
5264
5265 /* The remote VTEP specified should normally exist, but it is
5266 * possible that when peering comes up, peer may advertise MACIP
5267 * routes before advertising type-3 routes.
5268 */
5269 zvtep = zvni_vtep_find(zvni, &vtep_ip);
5270 if (!zvtep) {
5271 zvtep = zvni_vtep_add(zvni, &vtep_ip, VXLAN_FLOOD_DISABLED);
5272 if (!zvtep) {
5273 flog_err(
5274 EC_ZEBRA_VTEP_ADD_FAILED,
5275 "Failed to add remote VTEP, VNI %u zvni %p upon remote MACIP ADD",
5276 vni, zvni);
5277 return;
5278 }
5279
5280 zvni_vtep_install(zvni, zvtep);
5281 }
5282
5283 sticky = !!CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_STICKY);
5284 remote_gw = !!CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_GW);
5285 is_router = !!CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_ROUTER_FLAG);
5286
5287 mac = zvni_mac_lookup(zvni, macaddr);
5288
5289 /* Ignore if the mac is already present as a gateway mac */
5290 if (mac &&
5291 CHECK_FLAG(mac->flags, ZEBRA_MAC_DEF_GW) &&
5292 CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_GW)) {
5293 if (IS_ZEBRA_DEBUG_VXLAN)
5294 zlog_debug("Ignore remote MACIP ADD VNI %u MAC %s%s%s as MAC is already configured as gateway MAC",
5295 vni,
5296 prefix_mac2str(macaddr, buf, sizeof(buf)),
5297 ipa_len ? " IP " : "",
5298 ipa_len ?
5299 ipaddr2str(ipaddr, buf1, sizeof(buf1)) : "");
5300 return;
5301 }
5302
5303 zvrf = vrf_info_lookup(zvni->vxlan_if->vrf_id);
5304 if (!zvrf)
5305 return;
5306
5307 /* check if the remote MAC is unknown or has a change.
5308 * If so, that needs to be updated first. Note that client could
5309 * install MAC and MACIP separately or just install the latter.
5310 */
5311 if (!mac
5312 || !CHECK_FLAG(mac->flags, ZEBRA_MAC_REMOTE)
5313 || sticky != !!CHECK_FLAG(mac->flags, ZEBRA_MAC_STICKY)
5314 || remote_gw != !!CHECK_FLAG(mac->flags, ZEBRA_MAC_REMOTE_DEF_GW)
5315 || !IPV4_ADDR_SAME(&mac->fwd_info.r_vtep_ip, &vtep_ip)
5316 || seq != mac->rem_seq)
5317 update_mac = 1;
5318
5319 if (update_mac) {
5320 if (!mac) {
5321 mac = zvni_mac_add(zvni, macaddr);
5322 if (!mac) {
5323 zlog_warn(
5324 "Failed to add MAC %s VNI %u Remote VTEP %s",
5325 prefix_mac2str(macaddr, buf,
5326 sizeof(buf)),
5327 vni, inet_ntoa(vtep_ip));
5328 return;
5329 }
5330
5331 /* Is this MAC created for a MACIP? */
5332 if (ipa_len)
5333 SET_FLAG(mac->flags, ZEBRA_MAC_AUTO);
5334 } else {
5335 /* When host moves but changes its (MAC,IP)
5336 * binding, BGP may install a MACIP entry that
5337 * corresponds to "older" location of the host
5338 * in transient situations (because {IP1,M1}
5339 * is a different route from {IP1,M2}). Check
5340 * the sequence number and ignore this update
5341 * if appropriate.
5342 */
5343 if (CHECK_FLAG(mac->flags, ZEBRA_MAC_LOCAL))
5344 tmp_seq = mac->loc_seq;
5345 else
5346 tmp_seq = mac->rem_seq;
5347
5348 if (seq < tmp_seq) {
5349 if (IS_ZEBRA_DEBUG_VXLAN)
5350 zlog_debug("Ignore remote MACIP ADD VNI %u MAC %s%s%s as existing MAC has higher seq %u flags 0x%x",
5351 vni,
5352 prefix_mac2str(macaddr,
5353 buf, sizeof(buf)),
5354 ipa_len ? " IP " : "",
5355 ipa_len ?
5356 ipaddr2str(ipaddr,
5357 buf1, sizeof(buf1)) : "",
5358 tmp_seq, mac->flags);
5359 return;
5360 }
5361 }
5362
5363 /* Check MAC's curent state is local (this is the case
5364 * where MAC has moved from L->R) and check previous
5365 * detection started via local learning.
5366 * RFC-7432: A PE/VTEP that detects a MAC mobility
5367 * event via local learning starts an M-second timer.
5368 *
5369 * VTEP-IP or seq. change alone is not considered
5370 * for dup. detection.
5371 *
5372 * MAC is already marked duplicate set dad, then
5373 * is_dup_detect will be set to not install the entry.
5374 */
5375 if ((!CHECK_FLAG(mac->flags, ZEBRA_MAC_REMOTE) &&
5376 mac->dad_count) ||
5377 CHECK_FLAG(mac->flags, ZEBRA_MAC_DUPLICATE))
5378 do_dad = true;
5379
5380 /* Remove local MAC from BGP. */
5381 if (CHECK_FLAG(mac->flags, ZEBRA_MAC_LOCAL))
5382 zvni_mac_send_del_to_client(zvni->vni, macaddr);
5383
5384 /* Set "auto" and "remote" forwarding info. */
5385 UNSET_FLAG(mac->flags, ZEBRA_MAC_LOCAL);
5386 memset(&mac->fwd_info, 0, sizeof(mac->fwd_info));
5387 SET_FLAG(mac->flags, ZEBRA_MAC_REMOTE);
5388 mac->fwd_info.r_vtep_ip = vtep_ip;
5389
5390 if (sticky)
5391 SET_FLAG(mac->flags, ZEBRA_MAC_STICKY);
5392 else
5393 UNSET_FLAG(mac->flags, ZEBRA_MAC_STICKY);
5394
5395 if (remote_gw)
5396 SET_FLAG(mac->flags, ZEBRA_MAC_REMOTE_DEF_GW);
5397 else
5398 UNSET_FLAG(mac->flags, ZEBRA_MAC_REMOTE_DEF_GW);
5399
5400 zebra_vxlan_dup_addr_detect_for_mac(zvrf, mac,
5401 mac->fwd_info.r_vtep_ip,
5402 do_dad, &is_dup_detect,
5403 false);
5404
5405 if (!is_dup_detect) {
5406 zvni_process_neigh_on_remote_mac_add(zvni, mac);
5407 /* Install the entry. */
5408 zvni_mac_install(zvni, mac);
5409 }
5410 }
5411
5412 /* Update seq number. */
5413 mac->rem_seq = seq;
5414
5415 /* If there is no IP, return after clearing AUTO flag of MAC. */
5416 if (!ipa_len) {
5417 UNSET_FLAG(mac->flags, ZEBRA_MAC_AUTO);
5418 return;
5419 }
5420
5421 /* Reset flag */
5422 do_dad = false;
5423
5424 /* Check if the remote neighbor itself is unknown or has a
5425 * change. If so, create or update and then install the entry.
5426 */
5427 n = zvni_neigh_lookup(zvni, ipaddr);
5428 if (!n
5429 || !CHECK_FLAG(n->flags, ZEBRA_NEIGH_REMOTE)
5430 || is_router != !!CHECK_FLAG(n->flags, ZEBRA_NEIGH_ROUTER_FLAG)
5431 || (memcmp(&n->emac, macaddr, sizeof(*macaddr)) != 0)
5432 || !IPV4_ADDR_SAME(&n->r_vtep_ip, &vtep_ip)
5433 || seq != n->rem_seq)
5434 update_neigh = 1;
5435
5436 if (update_neigh) {
5437 if (!n) {
5438 n = zvni_neigh_add(zvni, ipaddr, macaddr);
5439 if (!n) {
5440 zlog_warn(
5441 "Failed to add Neigh %s MAC %s VNI %u Remote VTEP %s",
5442 ipaddr2str(ipaddr, buf1,
5443 sizeof(buf1)),
5444 prefix_mac2str(macaddr, buf,
5445 sizeof(buf)),
5446 vni, inet_ntoa(vtep_ip));
5447 return;
5448 }
5449
5450 } else {
5451 const char *n_type;
5452
5453 /* When host moves but changes its (MAC,IP)
5454 * binding, BGP may install a MACIP entry that
5455 * corresponds to "older" location of the host
5456 * in transient situations (because {IP1,M1}
5457 * is a different route from {IP1,M2}). Check
5458 * the sequence number and ignore this update
5459 * if appropriate.
5460 */
5461 if (CHECK_FLAG(n->flags, ZEBRA_NEIGH_LOCAL)) {
5462 tmp_seq = n->loc_seq;
5463 n_type = "local";
5464 } else {
5465 tmp_seq = n->rem_seq;
5466 n_type = "remote";
5467 }
5468 if (seq < tmp_seq) {
5469 if (IS_ZEBRA_DEBUG_VXLAN)
5470 zlog_debug("Ignore remote MACIP ADD VNI %u MAC %s%s%s as existing %s Neigh has higher seq %u",
5471 vni,
5472 prefix_mac2str(macaddr,
5473 buf, sizeof(buf)),
5474 " IP ",
5475 ipaddr2str(ipaddr, buf1, sizeof(buf1)),
5476 n_type,
5477 tmp_seq);
5478 return;
5479 }
5480 if (memcmp(&n->emac, macaddr, sizeof(*macaddr)) != 0) {
5481 /* MAC change, send a delete for old
5482 * neigh if learnt locally.
5483 */
5484 if (CHECK_FLAG(n->flags, ZEBRA_NEIGH_LOCAL) &&
5485 IS_ZEBRA_NEIGH_ACTIVE(n))
5486 zvni_neigh_send_del_to_client(
5487 zvni->vni, &n->ip,
5488 &n->emac, 0, n->state);
5489
5490 /* update neigh list for macs */
5491 old_mac = zvni_mac_lookup(zvni, &n->emac);
5492 if (old_mac) {
5493 listnode_delete(old_mac->neigh_list, n);
5494 zvni_deref_ip2mac(zvni, old_mac);
5495 }
5496 listnode_add_sort(mac->neigh_list, n);
5497 memcpy(&n->emac, macaddr, ETH_ALEN);
5498
5499 /* Check Neigh's curent state is local
5500 * (this is the case where neigh/host has moved
5501 * from L->R) and check previous detction
5502 * started via local learning.
5503 *
5504 * RFC-7432: A PE/VTEP that detects a MAC
5505 * mobilit event via local learning starts
5506 * an M-second timer.
5507 * VTEP-IP or seq. change along is not
5508 * considered for dup. detection.
5509 *
5510 * Mobilty event scenario-B IP-MAC binding
5511 * changed.
5512 */
5513 if ((!CHECK_FLAG(n->flags, ZEBRA_NEIGH_REMOTE))
5514 && n->dad_count)
5515 do_dad = true;
5516
5517 }
5518 }
5519
5520 /* Set "remote" forwarding info. */
5521 UNSET_FLAG(n->flags, ZEBRA_NEIGH_LOCAL);
5522 n->r_vtep_ip = vtep_ip;
5523 SET_FLAG(n->flags, ZEBRA_NEIGH_REMOTE);
5524
5525 /* Set router flag (R-bit) to this Neighbor entry */
5526 if (CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_ROUTER_FLAG))
5527 SET_FLAG(n->flags, ZEBRA_NEIGH_ROUTER_FLAG);
5528 else
5529 UNSET_FLAG(n->flags, ZEBRA_NEIGH_ROUTER_FLAG);
5530
5531 /* Check old or new MAC detected as duplicate,
5532 * inherit duplicate flag to this neigh.
5533 */
5534 if (zebra_vxlan_ip_inherit_dad_from_mac(zvrf, old_mac,
5535 mac, n)) {
5536 flog_warn(EC_ZEBRA_DUP_IP_INHERIT_DETECTED,
5537 "VNI %u: MAC %s IP %s detected as duplicate during remote update, inherit duplicate from MAC",
5538 zvni->vni,
5539 prefix_mac2str(&mac->macaddr, buf, sizeof(buf)),
5540 ipaddr2str(&n->ip, buf1, sizeof(buf1)));
5541 }
5542
5543 /* Check duplicate address detection for IP */
5544 zebra_vxlan_dup_addr_detect_for_neigh(zvrf, n,
5545 n->r_vtep_ip,
5546 do_dad,
5547 &is_dup_detect,
5548 false);
5549 /* Install the entry. */
5550 if (!is_dup_detect)
5551 zvni_neigh_install(zvni, n);
5552 }
5553
5554 zvni_probe_neigh_on_mac_add(zvni, mac);
5555
5556 /* Update seq number. */
5557 n->rem_seq = seq;
5558 }
5559
5560 /* Process a remote MACIP delete from BGP. */
5561 static void process_remote_macip_del(vni_t vni,
5562 struct ethaddr *macaddr,
5563 uint16_t ipa_len,
5564 struct ipaddr *ipaddr,
5565 struct in_addr vtep_ip)
5566 {
5567 zebra_vni_t *zvni;
5568 zebra_mac_t *mac = NULL;
5569 zebra_neigh_t *n = NULL;
5570 struct interface *ifp = NULL;
5571 struct zebra_if *zif = NULL;
5572 struct zebra_ns *zns;
5573 struct zebra_l2info_vxlan *vxl;
5574 struct zebra_vrf *zvrf;
5575 char buf[ETHER_ADDR_STRLEN];
5576 char buf1[INET6_ADDRSTRLEN];
5577
5578 /* Locate VNI hash entry - expected to exist. */
5579 zvni = zvni_lookup(vni);
5580 if (!zvni) {
5581 if (IS_ZEBRA_DEBUG_VXLAN)
5582 zlog_debug("Unknown VNI %u upon remote MACIP DEL", vni);
5583 return;
5584 }
5585
5586 ifp = zvni->vxlan_if;
5587 if (ifp)
5588 zif = ifp->info;
5589 if (!ifp ||
5590 !if_is_operative(ifp) ||
5591 !zif ||
5592 !zif->brslave_info.br_if) {
5593 if (IS_ZEBRA_DEBUG_VXLAN)
5594 zlog_debug("Ignoring remote MACIP DEL VNI %u, invalid interface state or info",
5595 vni);
5596 return;
5597 }
5598 zns = zebra_ns_lookup(NS_DEFAULT);
5599 vxl = &zif->l2info.vxl;
5600
5601 /* The remote VTEP specified is normally expected to exist, but
5602 * it is possible that the peer may delete the VTEP before deleting
5603 * any MACs referring to the VTEP, in which case the handler (see
5604 * remote_vtep_del) would have already deleted the MACs.
5605 */
5606 if (!zvni_vtep_find(zvni, &vtep_ip))
5607 return;
5608
5609 mac = zvni_mac_lookup(zvni, macaddr);
5610 if (ipa_len)
5611 n = zvni_neigh_lookup(zvni, ipaddr);
5612
5613 if (n && !mac) {
5614 zlog_warn("Failed to locate MAC %s for neigh %s VNI %u upon remote MACIP DEL",
5615 prefix_mac2str(macaddr, buf, sizeof(buf)),
5616 ipaddr2str(ipaddr, buf1, sizeof(buf1)), vni);
5617 return;
5618 }
5619
5620 /* If the remote mac or neighbor doesn't exist there is nothing
5621 * more to do. Otherwise, uninstall the entry and then remove it.
5622 */
5623 if (!mac && !n)
5624 return;
5625
5626 zvrf = vrf_info_lookup(zvni->vxlan_if->vrf_id);
5627
5628 /* Ignore the delete if this mac is a gateway mac-ip */
5629 if (CHECK_FLAG(mac->flags, ZEBRA_MAC_LOCAL)
5630 && CHECK_FLAG(mac->flags, ZEBRA_MAC_DEF_GW)) {
5631 zlog_warn(
5632 "Ignore remote MACIP DEL VNI %u MAC %s%s%s as MAC is already configured as gateway MAC",
5633 vni,
5634 prefix_mac2str(macaddr, buf, sizeof(buf)),
5635 ipa_len ? " IP " : "",
5636 ipa_len ?
5637 ipaddr2str(ipaddr, buf1, sizeof(buf1)) : "");
5638 return;
5639 }
5640
5641 /* Uninstall remote neighbor or MAC. */
5642 if (n) {
5643 if (zvrf->dad_freeze &&
5644 CHECK_FLAG(n->flags, ZEBRA_NEIGH_DUPLICATE) &&
5645 CHECK_FLAG(n->flags, ZEBRA_NEIGH_REMOTE) &&
5646 (memcmp(n->emac.octet, macaddr->octet, ETH_ALEN) == 0)) {
5647 struct interface *vlan_if;
5648
5649 vlan_if = zvni_map_to_svi(vxl->access_vlan,
5650 zif->brslave_info.br_if);
5651 if (IS_ZEBRA_DEBUG_VXLAN)
5652 zlog_debug("%s: IP %s (flags 0x%x intf %s) is remote and duplicate, read kernel for local entry",
5653 __PRETTY_FUNCTION__,
5654 ipaddr2str(ipaddr, buf1,
5655 sizeof(buf1)), n->flags,
5656 vlan_if->name);
5657 neigh_read_specific_ip(ipaddr, vlan_if);
5658 }
5659
5660 /* When the MAC changes for an IP, it is possible the
5661 * client may update the new MAC before trying to delete the
5662 * "old" neighbor (as these are two different MACIP routes).
5663 * Do the delete only if the MAC matches.
5664 */
5665 if (CHECK_FLAG(n->flags, ZEBRA_NEIGH_REMOTE)
5666 && (memcmp(n->emac.octet, macaddr->octet, ETH_ALEN) == 0)) {
5667 zvni_neigh_uninstall(zvni, n);
5668 zvni_neigh_del(zvni, n);
5669 zvni_deref_ip2mac(zvni, mac);
5670 }
5671 } else {
5672 /* DAD: when MAC is freeze state as remote learn event,
5673 * remote mac-ip delete event is received will result in freeze
5674 * entry removal, first fetch kernel for the same entry present
5675 * as LOCAL and reachable, avoid deleting this entry instead
5676 * use kerenel local entry to update during unfreeze time.
5677 */
5678 if (zvrf->dad_freeze &&
5679 CHECK_FLAG(mac->flags, ZEBRA_MAC_DUPLICATE) &&
5680 CHECK_FLAG(mac->flags, ZEBRA_MAC_REMOTE)) {
5681 if (IS_ZEBRA_DEBUG_VXLAN)
5682 zlog_debug("%s: MAC %s (flags 0x%x) is remote and duplicate, read kernel for local entry",
5683 __PRETTY_FUNCTION__,
5684 prefix_mac2str(macaddr, buf,
5685 sizeof(buf)),
5686 mac->flags);
5687 macfdb_read_specific_mac(zns, zif->brslave_info.br_if,
5688 macaddr, vxl->access_vlan);
5689 }
5690
5691 if (CHECK_FLAG(mac->flags, ZEBRA_MAC_REMOTE)) {
5692 zvni_process_neigh_on_remote_mac_del(zvni, mac);
5693 /*
5694 * the remote sequence number in the auto mac entry
5695 * needs to be reset to 0 as the mac entry may have
5696 * been removed on all VTEPs (including
5697 * the originating one)
5698 */
5699 mac->rem_seq = 0;
5700
5701 /* If all remote neighbors referencing a remote MAC
5702 * go away, we need to uninstall the MAC.
5703 */
5704 if (remote_neigh_count(mac) == 0) {
5705 zvni_mac_uninstall(zvni, mac);
5706 UNSET_FLAG(mac->flags, ZEBRA_MAC_REMOTE);
5707 }
5708 if (list_isempty(mac->neigh_list))
5709 zvni_mac_del(zvni, mac);
5710 else
5711 SET_FLAG(mac->flags, ZEBRA_MAC_AUTO);
5712 }
5713 }
5714 }
5715
5716
5717 /* Public functions */
5718
5719 int is_l3vni_for_prefix_routes_only(vni_t vni)
5720 {
5721 zebra_l3vni_t *zl3vni = NULL;
5722
5723 zl3vni = zl3vni_lookup(vni);
5724 if (!zl3vni)
5725 return 0;
5726
5727 return CHECK_FLAG(zl3vni->filter, PREFIX_ROUTES_ONLY) ? 1 : 0;
5728 }
5729
5730 /* handle evpn route in vrf table */
5731 void zebra_vxlan_evpn_vrf_route_add(vrf_id_t vrf_id, struct ethaddr *rmac,
5732 struct ipaddr *vtep_ip,
5733 struct prefix *host_prefix)
5734 {
5735 zebra_l3vni_t *zl3vni = NULL;
5736 struct ipaddr ipv4_vtep;
5737
5738 zl3vni = zl3vni_from_vrf(vrf_id);
5739 if (!zl3vni || !is_l3vni_oper_up(zl3vni))
5740 return;
5741
5742 /*
5743 * add the next hop neighbor -
5744 * neigh to be installed is the ipv6 nexthop neigh
5745 */
5746 zl3vni_remote_nh_add(zl3vni, vtep_ip, rmac, host_prefix);
5747
5748 /*
5749 * if the remote vtep is a ipv4 mapped ipv6 address convert it to ipv4
5750 * address. Rmac is programmed against the ipv4 vtep because we only
5751 * support ipv4 tunnels in the h/w right now
5752 */
5753 memset(&ipv4_vtep, 0, sizeof(struct ipaddr));
5754 ipv4_vtep.ipa_type = IPADDR_V4;
5755 if (vtep_ip->ipa_type == IPADDR_V6)
5756 ipv4_mapped_ipv6_to_ipv4(&vtep_ip->ipaddr_v6,
5757 &(ipv4_vtep.ipaddr_v4));
5758 else
5759 memcpy(&(ipv4_vtep.ipaddr_v4), &vtep_ip->ipaddr_v4,
5760 sizeof(struct in_addr));
5761
5762 /*
5763 * add the rmac - remote rmac to be installed is against the ipv4
5764 * nexthop address
5765 */
5766 zl3vni_remote_rmac_add(zl3vni, rmac, &ipv4_vtep, host_prefix);
5767 }
5768
5769 /* handle evpn vrf route delete */
5770 void zebra_vxlan_evpn_vrf_route_del(vrf_id_t vrf_id,
5771 struct ipaddr *vtep_ip,
5772 struct prefix *host_prefix)
5773 {
5774 zebra_l3vni_t *zl3vni = NULL;
5775 zebra_neigh_t *nh = NULL;
5776 zebra_mac_t *zrmac = NULL;
5777
5778 zl3vni = zl3vni_from_vrf(vrf_id);
5779 if (!zl3vni)
5780 return;
5781
5782 /* find the next hop entry and rmac entry */
5783 nh = zl3vni_nh_lookup(zl3vni, vtep_ip);
5784 if (!nh)
5785 return;
5786 zrmac = zl3vni_rmac_lookup(zl3vni, &nh->emac);
5787
5788 /* delete the next hop entry */
5789 zl3vni_remote_nh_del(zl3vni, nh, host_prefix);
5790
5791 /* delete the rmac entry */
5792 if (zrmac)
5793 zl3vni_remote_rmac_del(zl3vni, zrmac, host_prefix);
5794
5795 }
5796
5797 void zebra_vxlan_print_specific_rmac_l3vni(struct vty *vty, vni_t l3vni,
5798 struct ethaddr *rmac, bool use_json)
5799 {
5800 zebra_l3vni_t *zl3vni = NULL;
5801 zebra_mac_t *zrmac = NULL;
5802 json_object *json = NULL;
5803
5804 if (!is_evpn_enabled()) {
5805 if (use_json)
5806 vty_out(vty, "{}\n");
5807 return;
5808 }
5809
5810 if (use_json)
5811 json = json_object_new_object();
5812
5813 zl3vni = zl3vni_lookup(l3vni);
5814 if (!zl3vni) {
5815 if (use_json)
5816 vty_out(vty, "{}\n");
5817 else
5818 vty_out(vty, "%% L3-VNI %u doesn't exist\n", l3vni);
5819 return;
5820 }
5821
5822 zrmac = zl3vni_rmac_lookup(zl3vni, rmac);
5823 if (!zrmac) {
5824 if (use_json)
5825 vty_out(vty, "{}\n");
5826 else
5827 vty_out(vty,
5828 "%% Requested RMAC doesn't exist in L3-VNI %u",
5829 l3vni);
5830 return;
5831 }
5832
5833 zl3vni_print_rmac(zrmac, vty, json);
5834
5835 if (use_json) {
5836 vty_out(vty, "%s\n", json_object_to_json_string_ext(
5837 json, JSON_C_TO_STRING_PRETTY));
5838 json_object_free(json);
5839 }
5840 }
5841
5842 void zebra_vxlan_print_rmacs_l3vni(struct vty *vty, vni_t l3vni, bool use_json)
5843 {
5844 zebra_l3vni_t *zl3vni;
5845 uint32_t num_rmacs;
5846 struct rmac_walk_ctx wctx;
5847 json_object *json = NULL;
5848
5849 if (!is_evpn_enabled())
5850 return;
5851
5852 zl3vni = zl3vni_lookup(l3vni);
5853 if (!zl3vni) {
5854 if (use_json)
5855 vty_out(vty, "{}\n");
5856 else
5857 vty_out(vty, "%% L3-VNI %u does not exist\n", l3vni);
5858 return;
5859 }
5860 num_rmacs = hashcount(zl3vni->rmac_table);
5861 if (!num_rmacs)
5862 return;
5863
5864 if (use_json)
5865 json = json_object_new_object();
5866
5867 memset(&wctx, 0, sizeof(struct rmac_walk_ctx));
5868 wctx.vty = vty;
5869 wctx.json = json;
5870 if (!use_json) {
5871 vty_out(vty, "Number of Remote RMACs known for this VNI: %u\n",
5872 num_rmacs);
5873 vty_out(vty, "%-17s %-21s\n", "MAC", "Remote VTEP");
5874 } else
5875 json_object_int_add(json, "numRmacs", num_rmacs);
5876
5877 hash_iterate(zl3vni->rmac_table, zl3vni_print_rmac_hash, &wctx);
5878
5879 if (use_json) {
5880 vty_out(vty, "%s\n", json_object_to_json_string_ext(
5881 json, JSON_C_TO_STRING_PRETTY));
5882 json_object_free(json);
5883 }
5884 }
5885
5886 void zebra_vxlan_print_rmacs_all_l3vni(struct vty *vty, bool use_json)
5887 {
5888 json_object *json = NULL;
5889 void *args[2];
5890
5891 if (!is_evpn_enabled()) {
5892 if (use_json)
5893 vty_out(vty, "{}\n");
5894 return;
5895 }
5896
5897 if (use_json)
5898 json = json_object_new_object();
5899
5900 args[0] = vty;
5901 args[1] = json;
5902 hash_iterate(zrouter.l3vni_table,
5903 (void (*)(struct hash_bucket *,
5904 void *))zl3vni_print_rmac_hash_all_vni,
5905 args);
5906
5907 if (use_json) {
5908 vty_out(vty, "%s\n", json_object_to_json_string_ext(
5909 json, JSON_C_TO_STRING_PRETTY));
5910 json_object_free(json);
5911 }
5912 }
5913
5914 void zebra_vxlan_print_specific_nh_l3vni(struct vty *vty, vni_t l3vni,
5915 struct ipaddr *ip, bool use_json)
5916 {
5917 zebra_l3vni_t *zl3vni = NULL;
5918 zebra_neigh_t *n = NULL;
5919 json_object *json = NULL;
5920
5921 if (!is_evpn_enabled()) {
5922 if (use_json)
5923 vty_out(vty, "{}\n");
5924 return;
5925 }
5926
5927 if (use_json)
5928 json = json_object_new_object();
5929
5930 zl3vni = zl3vni_lookup(l3vni);
5931 if (!zl3vni) {
5932 if (use_json)
5933 vty_out(vty, "{}\n");
5934 else
5935 vty_out(vty, "%% L3-VNI %u does not exist\n", l3vni);
5936 return;
5937 }
5938
5939 n = zl3vni_nh_lookup(zl3vni, ip);
5940 if (!n) {
5941 if (use_json)
5942 vty_out(vty, "{}\n");
5943 else
5944 vty_out(vty,
5945 "%% Requested next-hop not present for L3-VNI %u",
5946 l3vni);
5947 return;
5948 }
5949
5950 zl3vni_print_nh(n, vty, json);
5951
5952 if (use_json) {
5953 vty_out(vty, "%s\n", json_object_to_json_string_ext(
5954 json, JSON_C_TO_STRING_PRETTY));
5955 json_object_free(json);
5956 }
5957 }
5958
5959 void zebra_vxlan_print_nh_l3vni(struct vty *vty, vni_t l3vni, bool use_json)
5960 {
5961 uint32_t num_nh;
5962 struct nh_walk_ctx wctx;
5963 json_object *json = NULL;
5964 zebra_l3vni_t *zl3vni = NULL;
5965
5966 if (!is_evpn_enabled())
5967 return;
5968
5969 zl3vni = zl3vni_lookup(l3vni);
5970 if (!zl3vni) {
5971 if (use_json)
5972 vty_out(vty, "{}\n");
5973 else
5974 vty_out(vty, "%% L3-VNI %u does not exist\n", l3vni);
5975 return;
5976 }
5977
5978 num_nh = hashcount(zl3vni->nh_table);
5979 if (!num_nh)
5980 return;
5981
5982 if (use_json)
5983 json = json_object_new_object();
5984
5985 wctx.vty = vty;
5986 wctx.json = json;
5987 if (!use_json) {
5988 vty_out(vty, "Number of NH Neighbors known for this VNI: %u\n",
5989 num_nh);
5990 vty_out(vty, "%-15s %-17s\n", "IP", "RMAC");
5991 } else
5992 json_object_int_add(json, "numNextHops", num_nh);
5993
5994 hash_iterate(zl3vni->nh_table, zl3vni_print_nh_hash, &wctx);
5995
5996 if (use_json) {
5997 vty_out(vty, "%s\n", json_object_to_json_string_ext(
5998 json, JSON_C_TO_STRING_PRETTY));
5999 json_object_free(json);
6000 }
6001 }
6002
6003 void zebra_vxlan_print_nh_all_l3vni(struct vty *vty, bool use_json)
6004 {
6005 json_object *json = NULL;
6006 void *args[2];
6007
6008 if (!is_evpn_enabled()) {
6009 if (use_json)
6010 vty_out(vty, "{}\n");
6011 return;
6012 }
6013
6014 if (use_json)
6015 json = json_object_new_object();
6016
6017 args[0] = vty;
6018 args[1] = json;
6019 hash_iterate(zrouter.l3vni_table,
6020 (void (*)(struct hash_bucket *,
6021 void *))zl3vni_print_nh_hash_all_vni,
6022 args);
6023
6024 if (use_json) {
6025 vty_out(vty, "%s\n", json_object_to_json_string_ext(
6026 json, JSON_C_TO_STRING_PRETTY));
6027 json_object_free(json);
6028 }
6029 }
6030
6031 /*
6032 * Display L3 VNI information (VTY command handler).
6033 */
6034 void zebra_vxlan_print_l3vni(struct vty *vty, vni_t vni, bool use_json)
6035 {
6036 void *args[2];
6037 json_object *json = NULL;
6038 zebra_l3vni_t *zl3vni = NULL;
6039
6040 if (!is_evpn_enabled()) {
6041 if (use_json)
6042 vty_out(vty, "{}\n");
6043 return;
6044 }
6045
6046 zl3vni = zl3vni_lookup(vni);
6047 if (!zl3vni) {
6048 if (use_json)
6049 vty_out(vty, "{}\n");
6050 else
6051 vty_out(vty, "%% VNI %u does not exist\n", vni);
6052 return;
6053 }
6054
6055 if (use_json)
6056 json = json_object_new_object();
6057
6058 args[0] = vty;
6059 args[1] = json;
6060 zl3vni_print(zl3vni, (void *)args);
6061
6062 if (use_json) {
6063 vty_out(vty, "%s\n", json_object_to_json_string_ext(
6064 json, JSON_C_TO_STRING_PRETTY));
6065 json_object_free(json);
6066 }
6067 }
6068
6069 void zebra_vxlan_print_vrf_vni(struct vty *vty, struct zebra_vrf *zvrf,
6070 json_object *json_vrfs)
6071 {
6072 char buf[ETHER_ADDR_STRLEN];
6073 zebra_l3vni_t *zl3vni = NULL;
6074
6075 zl3vni = zl3vni_lookup(zvrf->l3vni);
6076 if (!zl3vni)
6077 return;
6078
6079 if (!json_vrfs) {
6080 vty_out(vty, "%-37s %-10u %-20s %-20s %-5s %-18s\n",
6081 zvrf_name(zvrf), zl3vni->vni,
6082 zl3vni_vxlan_if_name(zl3vni),
6083 zl3vni_svi_if_name(zl3vni), zl3vni_state2str(zl3vni),
6084 zl3vni_rmac2str(zl3vni, buf, sizeof(buf)));
6085 } else {
6086 json_object *json_vrf = NULL;
6087
6088 json_vrf = json_object_new_object();
6089 json_object_string_add(json_vrf, "vrf", zvrf_name(zvrf));
6090 json_object_int_add(json_vrf, "vni", zl3vni->vni);
6091 json_object_string_add(json_vrf, "vxlanIntf",
6092 zl3vni_vxlan_if_name(zl3vni));
6093 json_object_string_add(json_vrf, "sviIntf",
6094 zl3vni_svi_if_name(zl3vni));
6095 json_object_string_add(json_vrf, "state",
6096 zl3vni_state2str(zl3vni));
6097 json_object_string_add(
6098 json_vrf, "routerMac",
6099 zl3vni_rmac2str(zl3vni, buf, sizeof(buf)));
6100 json_object_array_add(json_vrfs, json_vrf);
6101 }
6102 }
6103
6104 /*
6105 * Display Neighbors for a VNI (VTY command handler).
6106 */
6107 void zebra_vxlan_print_neigh_vni(struct vty *vty, struct zebra_vrf *zvrf,
6108 vni_t vni, bool use_json)
6109 {
6110 zebra_vni_t *zvni;
6111 uint32_t num_neigh;
6112 struct neigh_walk_ctx wctx;
6113 json_object *json = NULL;
6114
6115 if (!is_evpn_enabled())
6116 return;
6117 zvni = zvni_lookup(vni);
6118 if (!zvni) {
6119 if (use_json)
6120 vty_out(vty, "{}\n");
6121 else
6122 vty_out(vty, "%% VNI %u does not exist\n", vni);
6123 return;
6124 }
6125 num_neigh = hashcount(zvni->neigh_table);
6126 if (!num_neigh)
6127 return;
6128
6129 if (use_json)
6130 json = json_object_new_object();
6131
6132 /* Since we have IPv6 addresses to deal with which can vary widely in
6133 * size, we try to be a bit more elegant in display by first computing
6134 * the maximum width.
6135 */
6136 memset(&wctx, 0, sizeof(struct neigh_walk_ctx));
6137 wctx.zvni = zvni;
6138 wctx.vty = vty;
6139 wctx.addr_width = 15;
6140 wctx.json = json;
6141 hash_iterate(zvni->neigh_table, zvni_find_neigh_addr_width, &wctx);
6142
6143 if (!use_json) {
6144 vty_out(vty,
6145 "Number of ARPs (local and remote) known for this VNI: %u\n",
6146 num_neigh);
6147 vty_out(vty, "%*s %-6s %-8s %-17s %-21s %s\n", -wctx.addr_width,
6148 "IP", "Type", "State", "MAC", "Remote VTEP", "Seq #'s");
6149 } else
6150 json_object_int_add(json, "numArpNd", num_neigh);
6151
6152 hash_iterate(zvni->neigh_table, zvni_print_neigh_hash, &wctx);
6153 if (use_json) {
6154 vty_out(vty, "%s\n", json_object_to_json_string_ext(
6155 json, JSON_C_TO_STRING_PRETTY));
6156 json_object_free(json);
6157 }
6158 }
6159
6160 /*
6161 * Display neighbors across all VNIs (VTY command handler).
6162 */
6163 void zebra_vxlan_print_neigh_all_vni(struct vty *vty, struct zebra_vrf *zvrf,
6164 bool print_dup, bool use_json)
6165 {
6166 json_object *json = NULL;
6167 void *args[3];
6168
6169 if (!is_evpn_enabled())
6170 return;
6171
6172 if (use_json)
6173 json = json_object_new_object();
6174
6175 args[0] = vty;
6176 args[1] = json;
6177 args[2] = (void *)(ptrdiff_t)print_dup;
6178
6179 hash_iterate(zvrf->vni_table,
6180 (void (*)(struct hash_bucket *,
6181 void *))zvni_print_neigh_hash_all_vni,
6182 args);
6183 if (use_json) {
6184 vty_out(vty, "%s\n", json_object_to_json_string_ext(
6185 json, JSON_C_TO_STRING_PRETTY));
6186 json_object_free(json);
6187 }
6188 }
6189
6190 /*
6191 * Display neighbors across all VNIs in detail(VTY command handler).
6192 */
6193 void zebra_vxlan_print_neigh_all_vni_detail(struct vty *vty,
6194 struct zebra_vrf *zvrf,
6195 bool print_dup, bool use_json)
6196 {
6197 json_object *json = NULL;
6198 void *args[3];
6199
6200 if (!is_evpn_enabled())
6201 return;
6202
6203 if (use_json)
6204 json = json_object_new_object();
6205
6206 args[0] = vty;
6207 args[1] = json;
6208 args[2] = (void *)(ptrdiff_t)print_dup;
6209
6210 hash_iterate(zvrf->vni_table,
6211 (void (*)(struct hash_bucket *,
6212 void *))zvni_print_neigh_hash_all_vni_detail,
6213 args);
6214 if (use_json) {
6215 vty_out(vty, "%s\n", json_object_to_json_string_ext(
6216 json, JSON_C_TO_STRING_PRETTY));
6217 json_object_free(json);
6218 }
6219 }
6220
6221 /*
6222 * Display specific neighbor for a VNI, if present (VTY command handler).
6223 */
6224 void zebra_vxlan_print_specific_neigh_vni(struct vty *vty,
6225 struct zebra_vrf *zvrf, vni_t vni,
6226 struct ipaddr *ip, bool use_json)
6227 {
6228 zebra_vni_t *zvni;
6229 zebra_neigh_t *n;
6230 json_object *json = NULL;
6231
6232 if (!is_evpn_enabled())
6233 return;
6234 zvni = zvni_lookup(vni);
6235 if (!zvni) {
6236 if (use_json)
6237 vty_out(vty, "{}\n");
6238 else
6239 vty_out(vty, "%% VNI %u does not exist\n", vni);
6240 return;
6241 }
6242 n = zvni_neigh_lookup(zvni, ip);
6243 if (!n) {
6244 if (!use_json)
6245 vty_out(vty,
6246 "%% Requested neighbor does not exist in VNI %u\n",
6247 vni);
6248 return;
6249 }
6250 if (use_json)
6251 json = json_object_new_object();
6252
6253 zvni_print_neigh(n, vty, json);
6254
6255 if (use_json) {
6256 vty_out(vty, "%s\n", json_object_to_json_string_ext(
6257 json, JSON_C_TO_STRING_PRETTY));
6258 json_object_free(json);
6259 }
6260 }
6261
6262 /*
6263 * Display neighbors for a VNI from specific VTEP (VTY command handler).
6264 * By definition, these are remote neighbors.
6265 */
6266 void zebra_vxlan_print_neigh_vni_vtep(struct vty *vty, struct zebra_vrf *zvrf,
6267 vni_t vni, struct in_addr vtep_ip,
6268 bool use_json)
6269 {
6270 zebra_vni_t *zvni;
6271 uint32_t num_neigh;
6272 struct neigh_walk_ctx wctx;
6273 json_object *json = NULL;
6274
6275 if (!is_evpn_enabled())
6276 return;
6277 zvni = zvni_lookup(vni);
6278 if (!zvni) {
6279 if (use_json)
6280 vty_out(vty, "{}\n");
6281 else
6282 vty_out(vty, "%% VNI %u does not exist\n", vni);
6283 return;
6284 }
6285 num_neigh = hashcount(zvni->neigh_table);
6286 if (!num_neigh)
6287 return;
6288
6289 memset(&wctx, 0, sizeof(struct neigh_walk_ctx));
6290 wctx.zvni = zvni;
6291 wctx.vty = vty;
6292 wctx.addr_width = 15;
6293 wctx.flags = SHOW_REMOTE_NEIGH_FROM_VTEP;
6294 wctx.r_vtep_ip = vtep_ip;
6295 wctx.json = json;
6296 hash_iterate(zvni->neigh_table, zvni_find_neigh_addr_width, &wctx);
6297 hash_iterate(zvni->neigh_table, zvni_print_neigh_hash, &wctx);
6298
6299 if (use_json) {
6300 vty_out(vty, "%s\n", json_object_to_json_string_ext(
6301 json, JSON_C_TO_STRING_PRETTY));
6302 json_object_free(json);
6303 }
6304 }
6305
6306 /*
6307 * Display Duplicate detected Neighbors for a VNI
6308 * (VTY command handler).
6309 */
6310 void zebra_vxlan_print_neigh_vni_dad(struct vty *vty,
6311 struct zebra_vrf *zvrf,
6312 vni_t vni,
6313 bool use_json)
6314 {
6315 zebra_vni_t *zvni;
6316 uint32_t num_neigh;
6317 struct neigh_walk_ctx wctx;
6318 json_object *json = NULL;
6319
6320 if (!is_evpn_enabled())
6321 return;
6322
6323 zvni = zvni_lookup(vni);
6324 if (!zvni) {
6325 vty_out(vty, "%% VNI %u does not exist\n", vni);
6326 return;
6327 }
6328
6329 num_neigh = hashcount(zvni->neigh_table);
6330 if (!num_neigh)
6331 return;
6332
6333 num_neigh = num_dup_detected_neighs(zvni);
6334 if (!num_neigh)
6335 return;
6336
6337 if (use_json)
6338 json = json_object_new_object();
6339
6340 /* Since we have IPv6 addresses to deal with which can vary widely in
6341 * size, we try to be a bit more elegant in display by first computing
6342 * the maximum width.
6343 */
6344 memset(&wctx, 0, sizeof(struct neigh_walk_ctx));
6345 wctx.zvni = zvni;
6346 wctx.vty = vty;
6347 wctx.addr_width = 15;
6348 wctx.json = json;
6349 hash_iterate(zvni->neigh_table, zvni_find_neigh_addr_width, &wctx);
6350
6351 if (!use_json) {
6352 vty_out(vty,
6353 "Number of ARPs (local and remote) known for this VNI: %u\n",
6354 num_neigh);
6355 vty_out(vty, "%*s %-6s %-8s %-17s %-21s\n",
6356 -wctx.addr_width, "IP", "Type",
6357 "State", "MAC", "Remote VTEP");
6358 } else
6359 json_object_int_add(json, "numArpNd", num_neigh);
6360
6361 hash_iterate(zvni->neigh_table, zvni_print_dad_neigh_hash, &wctx);
6362
6363 if (use_json) {
6364 vty_out(vty, "%s\n", json_object_to_json_string_ext(
6365 json, JSON_C_TO_STRING_PRETTY));
6366 json_object_free(json);
6367 }
6368 }
6369
6370 /*
6371 * Display MACs for a VNI (VTY command handler).
6372 */
6373 void zebra_vxlan_print_macs_vni(struct vty *vty, struct zebra_vrf *zvrf,
6374 vni_t vni, bool use_json)
6375 {
6376 zebra_vni_t *zvni;
6377 uint32_t num_macs;
6378 struct mac_walk_ctx wctx;
6379 json_object *json = NULL;
6380 json_object *json_mac = NULL;
6381
6382 if (!is_evpn_enabled())
6383 return;
6384 zvni = zvni_lookup(vni);
6385 if (!zvni) {
6386 if (use_json)
6387 vty_out(vty, "{}\n");
6388 else
6389 vty_out(vty, "%% VNI %u does not exist\n", vni);
6390 return;
6391 }
6392 num_macs = num_valid_macs(zvni);
6393 if (!num_macs)
6394 return;
6395
6396 if (use_json) {
6397 json = json_object_new_object();
6398 json_mac = json_object_new_object();
6399 }
6400
6401 memset(&wctx, 0, sizeof(struct mac_walk_ctx));
6402 wctx.zvni = zvni;
6403 wctx.vty = vty;
6404 wctx.json = json_mac;
6405
6406 if (!use_json) {
6407 vty_out(vty,
6408 "Number of MACs (local and remote) known for this VNI: %u\n",
6409 num_macs);
6410 vty_out(vty, "%-17s %-6s %-21s %-5s %s\n", "MAC", "Type",
6411 "Intf/Remote VTEP", "VLAN", "Seq #'s");
6412 } else
6413 json_object_int_add(json, "numMacs", num_macs);
6414
6415 hash_iterate(zvni->mac_table, zvni_print_mac_hash, &wctx);
6416
6417 if (use_json) {
6418 json_object_object_add(json, "macs", json_mac);
6419 vty_out(vty, "%s\n", json_object_to_json_string_ext(
6420 json, JSON_C_TO_STRING_PRETTY));
6421 json_object_free(json);
6422 }
6423 }
6424
6425 /*
6426 * Display MACs for all VNIs (VTY command handler).
6427 */
6428 void zebra_vxlan_print_macs_all_vni(struct vty *vty, struct zebra_vrf *zvrf,
6429 bool print_dup, bool use_json)
6430 {
6431 struct mac_walk_ctx wctx;
6432 json_object *json = NULL;
6433
6434 if (!is_evpn_enabled()) {
6435 if (use_json)
6436 vty_out(vty, "{}\n");
6437 return;
6438 }
6439 if (use_json)
6440 json = json_object_new_object();
6441
6442 memset(&wctx, 0, sizeof(struct mac_walk_ctx));
6443 wctx.vty = vty;
6444 wctx.json = json;
6445 wctx.print_dup = print_dup;
6446 hash_iterate(zvrf->vni_table, zvni_print_mac_hash_all_vni, &wctx);
6447
6448 if (use_json) {
6449 vty_out(vty, "%s\n", json_object_to_json_string_ext(
6450 json, JSON_C_TO_STRING_PRETTY));
6451 json_object_free(json);
6452 }
6453 }
6454
6455 /*
6456 * Display MACs in detail for all VNIs (VTY command handler).
6457 */
6458 void zebra_vxlan_print_macs_all_vni_detail(struct vty *vty,
6459 struct zebra_vrf *zvrf,
6460 bool print_dup, bool use_json)
6461 {
6462 struct mac_walk_ctx wctx;
6463 json_object *json = NULL;
6464
6465 if (!is_evpn_enabled()) {
6466 if (use_json)
6467 vty_out(vty, "{}\n");
6468 return;
6469 }
6470 if (use_json)
6471 json = json_object_new_object();
6472
6473 memset(&wctx, 0, sizeof(struct mac_walk_ctx));
6474 wctx.vty = vty;
6475 wctx.json = json;
6476 wctx.print_dup = print_dup;
6477 hash_iterate(zvrf->vni_table, zvni_print_mac_hash_all_vni_detail,
6478 &wctx);
6479
6480 if (use_json) {
6481 vty_out(vty, "%s\n", json_object_to_json_string_ext(
6482 json, JSON_C_TO_STRING_PRETTY));
6483 json_object_free(json);
6484 }
6485 }
6486
6487 /*
6488 * Display MACs for all VNIs (VTY command handler).
6489 */
6490 void zebra_vxlan_print_macs_all_vni_vtep(struct vty *vty,
6491 struct zebra_vrf *zvrf,
6492 struct in_addr vtep_ip, bool use_json)
6493 {
6494 struct mac_walk_ctx wctx;
6495 json_object *json = NULL;
6496
6497 if (!is_evpn_enabled())
6498 return;
6499
6500 if (use_json)
6501 json = json_object_new_object();
6502
6503 memset(&wctx, 0, sizeof(struct mac_walk_ctx));
6504 wctx.vty = vty;
6505 wctx.flags = SHOW_REMOTE_MAC_FROM_VTEP;
6506 wctx.r_vtep_ip = vtep_ip;
6507 wctx.json = json;
6508 hash_iterate(zvrf->vni_table, zvni_print_mac_hash_all_vni, &wctx);
6509
6510 if (use_json) {
6511 vty_out(vty, "%s\n", json_object_to_json_string_ext(
6512 json, JSON_C_TO_STRING_PRETTY));
6513 json_object_free(json);
6514 }
6515 }
6516
6517 /*
6518 * Display specific MAC for a VNI, if present (VTY command handler).
6519 */
6520 void zebra_vxlan_print_specific_mac_vni(struct vty *vty, struct zebra_vrf *zvrf,
6521 vni_t vni, struct ethaddr *macaddr,
6522 bool use_json)
6523 {
6524 zebra_vni_t *zvni;
6525 zebra_mac_t *mac;
6526 json_object *json = NULL;
6527
6528 if (!is_evpn_enabled())
6529 return;
6530
6531 zvni = zvni_lookup(vni);
6532 if (!zvni) {
6533 if (use_json)
6534 vty_out(vty, "{}\n");
6535 else
6536 vty_out(vty, "%% VNI %u does not exist\n", vni);
6537 return;
6538 }
6539 mac = zvni_mac_lookup(zvni, macaddr);
6540 if (!mac) {
6541 if (use_json)
6542 vty_out(vty, "{}\n");
6543 else
6544 vty_out(vty,
6545 "%% Requested MAC does not exist in VNI %u\n",
6546 vni);
6547 return;
6548 }
6549
6550 if (use_json)
6551 json = json_object_new_object();
6552
6553 zvni_print_mac(mac, vty, json);
6554 if (use_json) {
6555 vty_out(vty, "%s\n", json_object_to_json_string_ext(
6556 json, JSON_C_TO_STRING_PRETTY));
6557 json_object_free(json);
6558 }
6559 }
6560
6561 /* Print Duplicate MACs per VNI */
6562 void zebra_vxlan_print_macs_vni_dad(struct vty *vty,
6563 struct zebra_vrf *zvrf,
6564 vni_t vni, bool use_json)
6565 {
6566 zebra_vni_t *zvni;
6567 struct mac_walk_ctx wctx;
6568 uint32_t num_macs;
6569 json_object *json = NULL;
6570 json_object *json_mac = NULL;
6571
6572 if (!is_evpn_enabled())
6573 return;
6574
6575 zvni = zvni_lookup(vni);
6576 if (!zvni) {
6577 vty_out(vty, "%% VNI %u does not exist\n", vni);
6578 return;
6579 }
6580
6581 num_macs = num_valid_macs(zvni);
6582 if (!num_macs)
6583 return;
6584
6585 num_macs = num_dup_detected_macs(zvni);
6586 if (!num_macs)
6587 return;
6588
6589 if (use_json) {
6590 json = json_object_new_object();
6591 json_mac = json_object_new_object();
6592 }
6593
6594 memset(&wctx, 0, sizeof(struct mac_walk_ctx));
6595 wctx.zvni = zvni;
6596 wctx.vty = vty;
6597 wctx.json = json_mac;
6598
6599 if (!use_json) {
6600 vty_out(vty,
6601 "Number of MACs (local and remote) known for this VNI: %u\n",
6602 num_macs);
6603 vty_out(vty, "%-17s %-6s %-21s %-5s\n", "MAC", "Type",
6604 "Intf/Remote VTEP", "VLAN");
6605 } else
6606 json_object_int_add(json, "numMacs", num_macs);
6607
6608 hash_iterate(zvni->mac_table, zvni_print_dad_mac_hash, &wctx);
6609
6610 if (use_json) {
6611 json_object_object_add(json, "macs", json_mac);
6612 vty_out(vty, "%s\n", json_object_to_json_string_ext(
6613 json, JSON_C_TO_STRING_PRETTY));
6614 json_object_free(json);
6615 }
6616
6617 }
6618
6619 int zebra_vxlan_clear_dup_detect_vni_mac(struct vty *vty,
6620 struct zebra_vrf *zvrf,
6621 vni_t vni, struct ethaddr *macaddr)
6622 {
6623 zebra_vni_t *zvni;
6624 zebra_mac_t *mac;
6625 struct listnode *node = NULL;
6626 zebra_neigh_t *nbr = NULL;
6627
6628 if (!is_evpn_enabled())
6629 return CMD_SUCCESS;
6630
6631 zvni = zvni_lookup(vni);
6632 if (!zvni) {
6633 vty_out(vty, "%% VNI %u does not exist\n", vni);
6634 return CMD_WARNING;
6635 }
6636
6637 mac = zvni_mac_lookup(zvni, macaddr);
6638 if (!mac) {
6639 vty_out(vty, "%% Requested MAC does not exist in VNI %u\n",
6640 vni);
6641 return CMD_WARNING;
6642 }
6643
6644 if (!CHECK_FLAG(mac->flags, ZEBRA_MAC_DUPLICATE)) {
6645 vty_out(vty, "%% Requested MAC is not duplicate detected\n");
6646 return CMD_WARNING;
6647 }
6648
6649 /* Remove all IPs as duplicate associcated with this MAC */
6650 for (ALL_LIST_ELEMENTS_RO(mac->neigh_list, node, nbr)) {
6651 /* For local neigh mark inactive so MACIP update is generated
6652 * to BGP. This is a scenario where MAC update received
6653 * and detected as duplicate which marked neigh as duplicate.
6654 * Later local neigh update did not get a chance to relay
6655 * to BGP. Similarly remote macip update, neigh needs to be
6656 * installed locally.
6657 */
6658 if (zvrf->dad_freeze &&
6659 CHECK_FLAG(nbr->flags, ZEBRA_NEIGH_DUPLICATE)) {
6660 if (CHECK_FLAG(nbr->flags, ZEBRA_NEIGH_LOCAL))
6661 ZEBRA_NEIGH_SET_INACTIVE(nbr);
6662 else if (CHECK_FLAG(nbr->flags, ZEBRA_NEIGH_REMOTE))
6663 zvni_neigh_install(zvni, nbr);
6664 }
6665
6666 UNSET_FLAG(nbr->flags, ZEBRA_NEIGH_DUPLICATE);
6667 nbr->dad_count = 0;
6668 nbr->detect_start_time.tv_sec = 0;
6669 nbr->dad_dup_detect_time = 0;
6670 }
6671
6672 UNSET_FLAG(mac->flags, ZEBRA_MAC_DUPLICATE);
6673 mac->dad_count = 0;
6674 mac->detect_start_time.tv_sec = 0;
6675 mac->detect_start_time.tv_usec = 0;
6676 mac->dad_dup_detect_time = 0;
6677 THREAD_OFF(mac->dad_mac_auto_recovery_timer);
6678
6679 /* warn-only action return */
6680 if (!zvrf->dad_freeze)
6681 return CMD_SUCCESS;
6682
6683 /* Local: Notify Peer VTEPs, Remote: Install the entry */
6684 if (CHECK_FLAG(mac->flags, ZEBRA_MAC_LOCAL)) {
6685 /* Inform to BGP */
6686 if (zvni_mac_send_add_to_client(zvni->vni,
6687 &mac->macaddr,
6688 mac->flags,
6689 mac->loc_seq))
6690 return CMD_SUCCESS;
6691
6692 /* Process all neighbors associated with this MAC. */
6693 zvni_process_neigh_on_local_mac_change(zvni, mac, 0);
6694
6695 } else if (CHECK_FLAG(mac->flags, ZEBRA_MAC_REMOTE)) {
6696 zvni_process_neigh_on_remote_mac_add(zvni, mac);
6697
6698 /* Install the entry. */
6699 zvni_mac_install(zvni, mac);
6700 }
6701
6702 return CMD_SUCCESS;
6703 }
6704
6705 int zebra_vxlan_clear_dup_detect_vni_ip(struct vty *vty,
6706 struct zebra_vrf *zvrf,
6707 vni_t vni, struct ipaddr *ip)
6708 {
6709 zebra_vni_t *zvni;
6710 zebra_neigh_t *nbr;
6711 zebra_mac_t *mac;
6712 char buf[INET6_ADDRSTRLEN];
6713 char buf2[ETHER_ADDR_STRLEN];
6714
6715 if (!is_evpn_enabled())
6716 return CMD_SUCCESS;
6717
6718 zvni = zvni_lookup(vni);
6719 if (!zvni) {
6720 vty_out(vty, "%% VNI %u does not exist\n", vni);
6721 return CMD_WARNING;
6722 }
6723
6724 nbr = zvni_neigh_lookup(zvni, ip);
6725 if (!nbr) {
6726 vty_out(vty,
6727 "%% Requested host IP does not exist in VNI %u\n",
6728 vni);
6729 return CMD_WARNING;
6730 }
6731
6732 ipaddr2str(&nbr->ip, buf, sizeof(buf));
6733
6734 if (!CHECK_FLAG(nbr->flags, ZEBRA_NEIGH_DUPLICATE)) {
6735 vty_out(vty,
6736 "%% Requsted host IP %s is not duplicate detected\n",
6737 buf);
6738 return CMD_WARNING;
6739 }
6740
6741 mac = zvni_mac_lookup(zvni, &nbr->emac);
6742
6743 if (CHECK_FLAG(mac->flags, ZEBRA_MAC_DUPLICATE)) {
6744 vty_out(vty,
6745 "%% Requested IP's associated MAC %s is still in duplicate state\n",
6746 prefix_mac2str(&nbr->emac, buf2, sizeof(buf2)));
6747 return CMD_WARNING_CONFIG_FAILED;
6748 }
6749
6750 if (IS_ZEBRA_DEBUG_VXLAN)
6751 zlog_debug("%s: clear neigh %s in dup state, flags 0x%x seq %u",
6752 __PRETTY_FUNCTION__, buf, nbr->flags,
6753 nbr->loc_seq);
6754
6755 UNSET_FLAG(nbr->flags, ZEBRA_NEIGH_DUPLICATE);
6756 nbr->dad_count = 0;
6757 nbr->detect_start_time.tv_sec = 0;
6758 nbr->detect_start_time.tv_usec = 0;
6759 nbr->dad_dup_detect_time = 0;
6760 THREAD_OFF(nbr->dad_ip_auto_recovery_timer);
6761
6762 if (!!CHECK_FLAG(nbr->flags, ZEBRA_NEIGH_LOCAL)) {
6763 zvni_neigh_send_add_to_client(zvni->vni, ip,
6764 &nbr->emac,
6765 nbr->flags, nbr->loc_seq);
6766 } else if (!!CHECK_FLAG(nbr->flags, ZEBRA_NEIGH_REMOTE)) {
6767 zvni_neigh_install(zvni, nbr);
6768 }
6769
6770 return CMD_SUCCESS;
6771 }
6772
6773 static void zvni_clear_dup_mac_hash(struct hash_bucket *bucket, void *ctxt)
6774 {
6775 struct mac_walk_ctx *wctx = ctxt;
6776 zebra_mac_t *mac;
6777 zebra_vni_t *zvni;
6778 struct listnode *node = NULL;
6779 zebra_neigh_t *nbr = NULL;
6780
6781 mac = (zebra_mac_t *)bucket->data;
6782 if (!mac)
6783 return;
6784
6785 zvni = wctx->zvni;
6786
6787 if (!CHECK_FLAG(mac->flags, ZEBRA_MAC_DUPLICATE))
6788 return;
6789
6790 UNSET_FLAG(mac->flags, ZEBRA_MAC_DUPLICATE);
6791 mac->dad_count = 0;
6792 mac->detect_start_time.tv_sec = 0;
6793 mac->detect_start_time.tv_usec = 0;
6794 mac->dad_dup_detect_time = 0;
6795 THREAD_OFF(mac->dad_mac_auto_recovery_timer);
6796
6797 /* Remove all IPs as duplicate associcated with this MAC */
6798 for (ALL_LIST_ELEMENTS_RO(mac->neigh_list, node, nbr)) {
6799 if (CHECK_FLAG(nbr->flags, ZEBRA_NEIGH_LOCAL)
6800 && nbr->dad_count)
6801 ZEBRA_NEIGH_SET_INACTIVE(nbr);
6802
6803 UNSET_FLAG(nbr->flags, ZEBRA_NEIGH_DUPLICATE);
6804 nbr->dad_count = 0;
6805 nbr->detect_start_time.tv_sec = 0;
6806 nbr->dad_dup_detect_time = 0;
6807 }
6808
6809 /* Local: Notify Peer VTEPs, Remote: Install the entry */
6810 if (CHECK_FLAG(mac->flags, ZEBRA_MAC_LOCAL)) {
6811 /* Inform to BGP */
6812 if (zvni_mac_send_add_to_client(zvni->vni,
6813 &mac->macaddr,
6814 mac->flags, mac->loc_seq))
6815 return;
6816
6817 /* Process all neighbors associated with this MAC. */
6818 zvni_process_neigh_on_local_mac_change(zvni, mac, 0);
6819
6820 } else if (CHECK_FLAG(mac->flags, ZEBRA_MAC_REMOTE)) {
6821 zvni_process_neigh_on_remote_mac_add(zvni, mac);
6822
6823 /* Install the entry. */
6824 zvni_mac_install(zvni, mac);
6825 }
6826 }
6827
6828 static void zvni_clear_dup_neigh_hash(struct hash_bucket *bucket, void *ctxt)
6829 {
6830 struct neigh_walk_ctx *wctx = ctxt;
6831 zebra_neigh_t *nbr;
6832 zebra_vni_t *zvni;
6833 char buf[INET6_ADDRSTRLEN];
6834
6835 nbr = (zebra_neigh_t *)bucket->data;
6836 if (!nbr)
6837 return;
6838
6839 zvni = wctx->zvni;
6840
6841 if (!CHECK_FLAG(nbr->flags, ZEBRA_NEIGH_DUPLICATE))
6842 return;
6843
6844 if (IS_ZEBRA_DEBUG_VXLAN) {
6845 ipaddr2str(&nbr->ip, buf, sizeof(buf));
6846 zlog_debug(
6847 "%s: clear neigh %s dup state, flags 0x%x seq %u",
6848 __PRETTY_FUNCTION__, buf,
6849 nbr->flags, nbr->loc_seq);
6850 }
6851
6852 UNSET_FLAG(nbr->flags, ZEBRA_NEIGH_DUPLICATE);
6853 nbr->dad_count = 0;
6854 nbr->detect_start_time.tv_sec = 0;
6855 nbr->detect_start_time.tv_usec = 0;
6856 nbr->dad_dup_detect_time = 0;
6857 THREAD_OFF(nbr->dad_ip_auto_recovery_timer);
6858
6859 if (CHECK_FLAG(nbr->flags, ZEBRA_NEIGH_LOCAL)) {
6860 zvni_neigh_send_add_to_client(zvni->vni, &nbr->ip,
6861 &nbr->emac,
6862 nbr->flags, nbr->loc_seq);
6863 } else if (CHECK_FLAG(nbr->flags, ZEBRA_NEIGH_REMOTE)) {
6864 zvni_neigh_install(zvni, nbr);
6865 }
6866 }
6867
6868 static void zvni_clear_dup_detect_hash_vni_all(struct hash_bucket *bucket,
6869 void **args)
6870 {
6871 struct vty *vty;
6872 zebra_vni_t *zvni;
6873 struct zebra_vrf *zvrf;
6874 struct mac_walk_ctx m_wctx;
6875 struct neigh_walk_ctx n_wctx;
6876
6877 zvni = (zebra_vni_t *)bucket->data;
6878 if (!zvni)
6879 return;
6880
6881 vty = (struct vty *)args[0];
6882 zvrf = (struct zebra_vrf *)args[1];
6883
6884 if (hashcount(zvni->neigh_table)) {
6885 memset(&n_wctx, 0, sizeof(struct neigh_walk_ctx));
6886 n_wctx.vty = vty;
6887 n_wctx.zvni = zvni;
6888 n_wctx.zvrf = zvrf;
6889 hash_iterate(zvni->neigh_table, zvni_clear_dup_neigh_hash,
6890 &n_wctx);
6891 }
6892
6893 if (num_valid_macs(zvni)) {
6894 memset(&m_wctx, 0, sizeof(struct mac_walk_ctx));
6895 m_wctx.zvni = zvni;
6896 m_wctx.vty = vty;
6897 m_wctx.zvrf = zvrf;
6898 hash_iterate(zvni->mac_table, zvni_clear_dup_mac_hash, &m_wctx);
6899 }
6900
6901 }
6902
6903 int zebra_vxlan_clear_dup_detect_vni_all(struct vty *vty,
6904 struct zebra_vrf *zvrf)
6905 {
6906 void *args[2];
6907
6908 if (!is_evpn_enabled())
6909 return CMD_SUCCESS;
6910
6911 args[0] = vty;
6912 args[1] = zvrf;
6913
6914 hash_iterate(zvrf->vni_table,
6915 (void (*)(struct hash_bucket *, void *))
6916 zvni_clear_dup_detect_hash_vni_all, args);
6917
6918 return CMD_SUCCESS;
6919 }
6920
6921 int zebra_vxlan_clear_dup_detect_vni(struct vty *vty,
6922 struct zebra_vrf *zvrf,
6923 vni_t vni)
6924 {
6925 zebra_vni_t *zvni;
6926 struct mac_walk_ctx m_wctx;
6927 struct neigh_walk_ctx n_wctx;
6928
6929 if (!is_evpn_enabled())
6930 return CMD_SUCCESS;
6931
6932 zvni = zvni_lookup(vni);
6933 if (!zvni) {
6934 vty_out(vty, "%% VNI %u does not exist\n", vni);
6935 return CMD_WARNING;
6936 }
6937
6938 if (hashcount(zvni->neigh_table)) {
6939 memset(&n_wctx, 0, sizeof(struct neigh_walk_ctx));
6940 n_wctx.vty = vty;
6941 n_wctx.zvni = zvni;
6942 n_wctx.zvrf = zvrf;
6943 hash_iterate(zvni->neigh_table, zvni_clear_dup_neigh_hash,
6944 &n_wctx);
6945 }
6946
6947 if (num_valid_macs(zvni)) {
6948 memset(&m_wctx, 0, sizeof(struct mac_walk_ctx));
6949 m_wctx.zvni = zvni;
6950 m_wctx.vty = vty;
6951 m_wctx.zvrf = zvrf;
6952 hash_iterate(zvni->mac_table, zvni_clear_dup_mac_hash, &m_wctx);
6953 }
6954
6955 return CMD_SUCCESS;
6956 }
6957
6958 /*
6959 * Display MACs for a VNI from specific VTEP (VTY command handler).
6960 */
6961 void zebra_vxlan_print_macs_vni_vtep(struct vty *vty, struct zebra_vrf *zvrf,
6962 vni_t vni, struct in_addr vtep_ip,
6963 bool use_json)
6964 {
6965 zebra_vni_t *zvni;
6966 uint32_t num_macs;
6967 struct mac_walk_ctx wctx;
6968 json_object *json = NULL;
6969 json_object *json_mac = NULL;
6970
6971 if (!is_evpn_enabled())
6972 return;
6973 zvni = zvni_lookup(vni);
6974 if (!zvni) {
6975 if (use_json)
6976 vty_out(vty, "{}\n");
6977 else
6978 vty_out(vty, "%% VNI %u does not exist\n", vni);
6979 return;
6980 }
6981 num_macs = num_valid_macs(zvni);
6982 if (!num_macs)
6983 return;
6984
6985 if (use_json) {
6986 json = json_object_new_object();
6987 json_mac = json_object_new_object();
6988 }
6989
6990 memset(&wctx, 0, sizeof(struct mac_walk_ctx));
6991 wctx.zvni = zvni;
6992 wctx.vty = vty;
6993 wctx.flags = SHOW_REMOTE_MAC_FROM_VTEP;
6994 wctx.r_vtep_ip = vtep_ip;
6995 wctx.json = json_mac;
6996 hash_iterate(zvni->mac_table, zvni_print_mac_hash, &wctx);
6997
6998 if (use_json) {
6999 json_object_int_add(json, "numMacs", wctx.count);
7000 if (wctx.count)
7001 json_object_object_add(json, "macs", json_mac);
7002 vty_out(vty, "%s\n", json_object_to_json_string_ext(
7003 json, JSON_C_TO_STRING_PRETTY));
7004 json_object_free(json);
7005 }
7006 }
7007
7008
7009 /*
7010 * Display VNI information (VTY command handler).
7011 */
7012 void zebra_vxlan_print_vni(struct vty *vty, struct zebra_vrf *zvrf, vni_t vni,
7013 bool use_json)
7014 {
7015 json_object *json = NULL;
7016 void *args[2];
7017 zebra_l3vni_t *zl3vni = NULL;
7018 zebra_vni_t *zvni = NULL;
7019
7020 if (!is_evpn_enabled())
7021 return;
7022
7023 if (use_json)
7024 json = json_object_new_object();
7025 args[0] = vty;
7026 args[1] = json;
7027
7028 zl3vni = zl3vni_lookup(vni);
7029 if (zl3vni) {
7030 zl3vni_print(zl3vni, (void *)args);
7031 } else {
7032 zvni = zvni_lookup(vni);
7033 if (!zvni) {
7034 if (use_json)
7035 vty_out(vty, "{}\n");
7036 else
7037 vty_out(vty, "%% VNI %u does not exist\n", vni);
7038 return;
7039 }
7040
7041 zvni_print(zvni, (void *)args);
7042 }
7043
7044 if (use_json) {
7045 vty_out(vty, "%s\n", json_object_to_json_string_ext(
7046 json, JSON_C_TO_STRING_PRETTY));
7047 json_object_free(json);
7048 }
7049 }
7050
7051 /* Display all global details for EVPN */
7052 void zebra_vxlan_print_evpn(struct vty *vty, bool uj)
7053 {
7054 int num_l2vnis = 0;
7055 int num_l3vnis = 0;
7056 int num_vnis = 0;
7057 json_object *json = NULL;
7058 struct zebra_vrf *zvrf = NULL;
7059
7060 if (!is_evpn_enabled())
7061 return;
7062
7063 zvrf = zebra_vrf_get_evpn();
7064 if (!zvrf)
7065 return;
7066
7067 num_l3vnis = hashcount(zrouter.l3vni_table);
7068 num_l2vnis = hashcount(zvrf->vni_table);
7069 num_vnis = num_l2vnis + num_l3vnis;
7070
7071 if (uj) {
7072 json = json_object_new_object();
7073 json_object_string_add(json, "advertiseGatewayMacip",
7074 zvrf->advertise_gw_macip ? "Yes" : "No");
7075 json_object_int_add(json, "numVnis", num_vnis);
7076 json_object_int_add(json, "numL2Vnis", num_l2vnis);
7077 json_object_int_add(json, "numL3Vnis", num_l3vnis);
7078 if (zvrf->dup_addr_detect)
7079 json_object_boolean_true_add(json,
7080 "isDuplicateAddrDetection");
7081 else
7082 json_object_boolean_false_add(json,
7083 "isDuplicateAddrDetection");
7084 json_object_int_add(json, "maxMoves", zvrf->dad_max_moves);
7085 json_object_int_add(json, "detectionTime", zvrf->dad_time);
7086 json_object_int_add(json, "detectionFreezeTime",
7087 zvrf->dad_freeze_time);
7088
7089 } else {
7090 vty_out(vty, "L2 VNIs: %u\n", num_l2vnis);
7091 vty_out(vty, "L3 VNIs: %u\n", num_l3vnis);
7092 vty_out(vty, "Advertise gateway mac-ip: %s\n",
7093 zvrf->advertise_gw_macip ? "Yes" : "No");
7094 vty_out(vty, "Advertise svi mac-ip: %s\n",
7095 zvrf->advertise_svi_macip ? "Yes" : "No");
7096 vty_out(vty, "Duplicate address detection: %s\n",
7097 zvrf->dup_addr_detect ? "Enable" : "Disable");
7098 vty_out(vty, " Detection max-moves %u, time %d\n",
7099 zvrf->dad_max_moves, zvrf->dad_time);
7100 if (zvrf->dad_freeze) {
7101 if (zvrf->dad_freeze_time)
7102 vty_out(vty, " Detection freeze %u\n",
7103 zvrf->dad_freeze_time);
7104 else
7105 vty_out(vty, " Detection freeze %s\n",
7106 "permanent");
7107 }
7108 }
7109
7110 if (uj) {
7111 vty_out(vty, "%s\n", json_object_to_json_string_ext(
7112 json, JSON_C_TO_STRING_PRETTY));
7113 json_object_free(json);
7114 }
7115 }
7116
7117 /*
7118 * Display VNI hash table (VTY command handler).
7119 */
7120 void zebra_vxlan_print_vnis(struct vty *vty, struct zebra_vrf *zvrf,
7121 bool use_json)
7122 {
7123 json_object *json = NULL;
7124 void *args[2];
7125
7126 if (!is_evpn_enabled())
7127 return;
7128
7129 if (use_json)
7130 json = json_object_new_object();
7131 else
7132 vty_out(vty, "%-10s %-4s %-21s %-8s %-8s %-15s %-37s\n", "VNI",
7133 "Type", "VxLAN IF", "# MACs", "# ARPs",
7134 "# Remote VTEPs", "Tenant VRF");
7135
7136 args[0] = vty;
7137 args[1] = json;
7138
7139 /* Display all L2-VNIs */
7140 hash_iterate(zvrf->vni_table,
7141 (void (*)(struct hash_bucket *, void *))zvni_print_hash,
7142 args);
7143
7144 /* Display all L3-VNIs */
7145 hash_iterate(zrouter.l3vni_table,
7146 (void (*)(struct hash_bucket *, void *))zl3vni_print_hash,
7147 args);
7148
7149 if (use_json) {
7150 vty_out(vty, "%s\n", json_object_to_json_string_ext(
7151 json, JSON_C_TO_STRING_PRETTY));
7152 json_object_free(json);
7153 }
7154 }
7155
7156 void zebra_vxlan_dup_addr_detection(ZAPI_HANDLER_ARGS)
7157 {
7158 struct stream *s;
7159 int time = 0;
7160 uint32_t max_moves = 0;
7161 uint32_t freeze_time = 0;
7162 bool dup_addr_detect = false;
7163 bool freeze = false;
7164
7165 s = msg;
7166 STREAM_GETL(s, dup_addr_detect);
7167 STREAM_GETL(s, time);
7168 STREAM_GETL(s, max_moves);
7169 STREAM_GETL(s, freeze);
7170 STREAM_GETL(s, freeze_time);
7171
7172 /* DAD previous state was enabled, and new state is disable,
7173 * clear all duplicate detected addresses.
7174 */
7175 if (zvrf->dup_addr_detect && !dup_addr_detect)
7176 zebra_vxlan_clear_dup_detect_vni_all(NULL, zvrf);
7177
7178 zvrf->dup_addr_detect = dup_addr_detect;
7179 zvrf->dad_time = time;
7180 zvrf->dad_max_moves = max_moves;
7181 zvrf->dad_freeze = freeze;
7182 zvrf->dad_freeze_time = freeze_time;
7183
7184 if (IS_ZEBRA_DEBUG_VXLAN)
7185 zlog_debug(
7186 "VRF %s duplicate detect %s max_moves %u timeout %u freeze %s freeze_time %u",
7187 vrf_id_to_name(zvrf->vrf->vrf_id),
7188 zvrf->dup_addr_detect ? "enable" : "disable",
7189 zvrf->dad_max_moves,
7190 zvrf->dad_time,
7191 zvrf->dad_freeze ? "enable" : "disable",
7192 zvrf->dad_freeze_time);
7193
7194 stream_failure:
7195 return;
7196 }
7197
7198 /*
7199 * Display VNI hash table in detail(VTY command handler).
7200 */
7201 void zebra_vxlan_print_vnis_detail(struct vty *vty, struct zebra_vrf *zvrf,
7202 bool use_json)
7203 {
7204 json_object *json = NULL;
7205 struct zebra_ns *zns = NULL;
7206 struct zvni_evpn_show zes;
7207
7208 if (!is_evpn_enabled())
7209 return;
7210
7211 zns = zebra_ns_lookup(NS_DEFAULT);
7212 if (!zns)
7213 return;
7214
7215
7216 if (use_json)
7217 json = json_object_new_object();
7218
7219 zes.vty = vty;
7220 zes.json = json;
7221 zes.zvrf = zvrf;
7222
7223 /* Display all L2-VNIs */
7224 hash_iterate(
7225 zvrf->vni_table,
7226 (void (*)(struct hash_bucket *, void *))zvni_print_hash_detail,
7227 &zes);
7228
7229 /* Display all L3-VNIs */
7230 hash_iterate(zrouter.l3vni_table,
7231 (void (*)(struct hash_bucket *,
7232 void *))zl3vni_print_hash_detail,
7233 &zes);
7234
7235 if (use_json) {
7236 vty_out(vty, "%s\n",
7237 json_object_to_json_string_ext(
7238 json, JSON_C_TO_STRING_PRETTY));
7239 json_object_free(json);
7240 }
7241 }
7242
7243 /*
7244 * Handle neighbor delete notification from the kernel (on a VLAN device
7245 * / L3 interface). This may result in either the neighbor getting deleted
7246 * from our database or being re-added to the kernel (if it is a valid
7247 * remote neighbor).
7248 */
7249 int zebra_vxlan_handle_kernel_neigh_del(struct interface *ifp,
7250 struct interface *link_if,
7251 struct ipaddr *ip)
7252 {
7253 char buf[INET6_ADDRSTRLEN];
7254 char buf2[ETHER_ADDR_STRLEN];
7255 zebra_neigh_t *n = NULL;
7256 zebra_vni_t *zvni = NULL;
7257 zebra_mac_t *zmac = NULL;
7258 zebra_l3vni_t *zl3vni = NULL;
7259 struct zebra_vrf *zvrf;
7260
7261 /* check if this is a remote neigh entry corresponding to remote
7262 * next-hop
7263 */
7264 zl3vni = zl3vni_from_svi(ifp, link_if);
7265 if (zl3vni)
7266 return zl3vni_local_nh_del(zl3vni, ip);
7267
7268 /* We are only interested in neighbors on an SVI that resides on top
7269 * of a VxLAN bridge.
7270 */
7271 zvni = zvni_from_svi(ifp, link_if);
7272 if (!zvni)
7273 return 0;
7274
7275 if (!zvni->vxlan_if) {
7276 zlog_debug(
7277 "VNI %u hash %p doesn't have intf upon local neighbor DEL",
7278 zvni->vni, zvni);
7279 return -1;
7280 }
7281
7282 if (IS_ZEBRA_DEBUG_VXLAN)
7283 zlog_debug("Del neighbor %s intf %s(%u) -> L2-VNI %u",
7284 ipaddr2str(ip, buf, sizeof(buf)), ifp->name,
7285 ifp->ifindex, zvni->vni);
7286
7287 /* If entry doesn't exist, nothing to do. */
7288 n = zvni_neigh_lookup(zvni, ip);
7289 if (!n)
7290 return 0;
7291
7292 zmac = zvni_mac_lookup(zvni, &n->emac);
7293 if (!zmac) {
7294 if (IS_ZEBRA_DEBUG_VXLAN)
7295 zlog_debug(
7296 "Trying to del a neigh %s without a mac %s on VNI %u",
7297 ipaddr2str(ip, buf, sizeof(buf)),
7298 prefix_mac2str(&n->emac, buf2, sizeof(buf2)),
7299 zvni->vni);
7300
7301 return 0;
7302 }
7303
7304 /* If it is a remote entry, the kernel has aged this out or someone has
7305 * deleted it, it needs to be re-installed as Quagga is the owner.
7306 */
7307 if (CHECK_FLAG(n->flags, ZEBRA_NEIGH_REMOTE)) {
7308 zvni_neigh_install(zvni, n);
7309 return 0;
7310 }
7311
7312 zvrf = vrf_info_lookup(zvni->vxlan_if->vrf_id);
7313 if (!zvrf) {
7314 zlog_debug("%s: VNI %u vrf lookup failed.",
7315 __PRETTY_FUNCTION__, zvni->vni);
7316 return -1;
7317 }
7318
7319 /* In case of feeze action, if local neigh is in duplicate state,
7320 * Mark the Neigh as inactive before sending delete request to BGPd,
7321 * If BGPd has remote entry, it will re-install
7322 */
7323 if (zvrf->dad_freeze &&
7324 CHECK_FLAG(n->flags, ZEBRA_NEIGH_DUPLICATE))
7325 ZEBRA_NEIGH_SET_INACTIVE(n);
7326
7327 /* Remove neighbor from BGP. */
7328 zvni_neigh_send_del_to_client(zvni->vni, &n->ip, &n->emac, 0, n->state);
7329
7330 /* Delete this neighbor entry. */
7331 zvni_neigh_del(zvni, n);
7332
7333 /* see if the AUTO mac needs to be deleted */
7334 if (CHECK_FLAG(zmac->flags, ZEBRA_MAC_AUTO)
7335 && !listcount(zmac->neigh_list))
7336 zvni_mac_del(zvni, zmac);
7337
7338 return 0;
7339 }
7340
7341 /*
7342 * Handle neighbor add or update notification from the kernel (on a VLAN
7343 * device / L3 interface). This is typically for a local neighbor but can
7344 * also be for a remote neighbor (e.g., ageout notification). It could
7345 * also be a "move" scenario.
7346 */
7347 int zebra_vxlan_handle_kernel_neigh_update(struct interface *ifp,
7348 struct interface *link_if,
7349 struct ipaddr *ip,
7350 struct ethaddr *macaddr,
7351 uint16_t state,
7352 bool is_ext,
7353 bool is_router)
7354 {
7355 char buf[ETHER_ADDR_STRLEN];
7356 char buf2[INET6_ADDRSTRLEN];
7357 zebra_vni_t *zvni = NULL;
7358 zebra_l3vni_t *zl3vni = NULL;
7359
7360 /* check if this is a remote neigh entry corresponding to remote
7361 * next-hop
7362 */
7363 zl3vni = zl3vni_from_svi(ifp, link_if);
7364 if (zl3vni)
7365 return zl3vni_local_nh_add_update(zl3vni, ip, state);
7366
7367 /* We are only interested in neighbors on an SVI that resides on top
7368 * of a VxLAN bridge.
7369 */
7370 zvni = zvni_from_svi(ifp, link_if);
7371 if (!zvni)
7372 return 0;
7373
7374 if (IS_ZEBRA_DEBUG_VXLAN)
7375 zlog_debug(
7376 "Add/Update neighbor %s MAC %s intf %s(%u) state 0x%x %s %s-> L2-VNI %u",
7377 ipaddr2str(ip, buf2, sizeof(buf2)),
7378 prefix_mac2str(macaddr, buf, sizeof(buf)), ifp->name,
7379 ifp->ifindex, state, is_ext ? "ext-learned " : "",
7380 is_router ? "router " : "",
7381 zvni->vni);
7382
7383 /* Is this about a local neighbor or a remote one? */
7384 if (!is_ext)
7385 return zvni_local_neigh_update(zvni, ifp, ip, macaddr,
7386 is_router);
7387
7388 return zvni_remote_neigh_update(zvni, ifp, ip, macaddr, state);
7389 }
7390
7391
7392 /*
7393 * Handle message from client to delete a remote MACIP for a VNI.
7394 */
7395 void zebra_vxlan_remote_macip_del(ZAPI_HANDLER_ARGS)
7396 {
7397 struct stream *s;
7398 vni_t vni;
7399 struct ethaddr macaddr;
7400 struct ipaddr ip;
7401 struct in_addr vtep_ip;
7402 uint16_t l = 0, ipa_len;
7403 char buf[ETHER_ADDR_STRLEN];
7404 char buf1[INET6_ADDRSTRLEN];
7405
7406 memset(&macaddr, 0, sizeof(struct ethaddr));
7407 memset(&ip, 0, sizeof(struct ipaddr));
7408 memset(&vtep_ip, 0, sizeof(struct in_addr));
7409
7410 s = msg;
7411
7412 while (l < hdr->length) {
7413 /* Obtain each remote MACIP and process. */
7414 /* Message contains VNI, followed by MAC followed by IP (if any)
7415 * followed by remote VTEP IP.
7416 */
7417 memset(&ip, 0, sizeof(ip));
7418 STREAM_GETL(s, vni);
7419 STREAM_GET(&macaddr.octet, s, ETH_ALEN);
7420 STREAM_GETL(s, ipa_len);
7421 if (ipa_len) {
7422 ip.ipa_type = (ipa_len == IPV4_MAX_BYTELEN) ? IPADDR_V4
7423 : IPADDR_V6;
7424 STREAM_GET(&ip.ip.addr, s, ipa_len);
7425 }
7426 l += 4 + ETH_ALEN + 4 + ipa_len;
7427 STREAM_GET(&vtep_ip.s_addr, s, IPV4_MAX_BYTELEN);
7428 l += IPV4_MAX_BYTELEN;
7429
7430 if (IS_ZEBRA_DEBUG_VXLAN)
7431 zlog_debug(
7432 "Recv MACIP DEL VNI %u MAC %s%s%s Remote VTEP %s from %s",
7433 vni,
7434 prefix_mac2str(&macaddr, buf, sizeof(buf)),
7435 ipa_len ? " IP " : "",
7436 ipa_len ?
7437 ipaddr2str(&ip, buf1, sizeof(buf1)) : "",
7438 inet_ntoa(vtep_ip),
7439 zebra_route_string(client->proto));
7440
7441 process_remote_macip_del(vni, &macaddr, ipa_len, &ip, vtep_ip);
7442 }
7443
7444 stream_failure:
7445 return;
7446 }
7447
7448 /*
7449 * Handle message from client to add a remote MACIP for a VNI. This
7450 * could be just the add of a MAC address or the add of a neighbor
7451 * (IP+MAC).
7452 */
7453 void zebra_vxlan_remote_macip_add(ZAPI_HANDLER_ARGS)
7454 {
7455 struct stream *s;
7456 vni_t vni;
7457 struct ethaddr macaddr;
7458 struct ipaddr ip;
7459 struct in_addr vtep_ip;
7460 uint16_t l = 0, ipa_len;
7461 uint8_t flags = 0;
7462 uint32_t seq;
7463 char buf[ETHER_ADDR_STRLEN];
7464 char buf1[INET6_ADDRSTRLEN];
7465
7466 memset(&macaddr, 0, sizeof(struct ethaddr));
7467 memset(&ip, 0, sizeof(struct ipaddr));
7468 memset(&vtep_ip, 0, sizeof(struct in_addr));
7469
7470 if (!EVPN_ENABLED(zvrf)) {
7471 zlog_debug("EVPN not enabled, ignoring remote MACIP ADD");
7472 return;
7473 }
7474
7475 s = msg;
7476
7477 while (l < hdr->length) {
7478 /* Obtain each remote MACIP and process. */
7479 /* Message contains VNI, followed by MAC followed by IP (if any)
7480 * followed by remote VTEP IP.
7481 */
7482 memset(&ip, 0, sizeof(ip));
7483 STREAM_GETL(s, vni);
7484 STREAM_GET(&macaddr.octet, s, ETH_ALEN);
7485 STREAM_GETL(s, ipa_len);
7486 if (ipa_len) {
7487 ip.ipa_type = (ipa_len == IPV4_MAX_BYTELEN) ? IPADDR_V4
7488 : IPADDR_V6;
7489 STREAM_GET(&ip.ip.addr, s, ipa_len);
7490 }
7491 l += 4 + ETH_ALEN + 4 + ipa_len;
7492 STREAM_GET(&vtep_ip.s_addr, s, IPV4_MAX_BYTELEN);
7493 l += IPV4_MAX_BYTELEN;
7494
7495 /* Get flags - sticky mac and/or gateway mac */
7496 STREAM_GETC(s, flags);
7497 l++;
7498 STREAM_GETL(s, seq);
7499 l += 4;
7500
7501 if (IS_ZEBRA_DEBUG_VXLAN)
7502 zlog_debug(
7503 "Recv MACIP ADD VNI %u MAC %s%s%s flags 0x%x seq %u VTEP %s from %s",
7504 vni,
7505 prefix_mac2str(&macaddr, buf, sizeof(buf)),
7506 ipa_len ? " IP " : "",
7507 ipa_len ?
7508 ipaddr2str(&ip, buf1, sizeof(buf1)) : "",
7509 flags, seq, inet_ntoa(vtep_ip),
7510 zebra_route_string(client->proto));
7511
7512 process_remote_macip_add(vni, &macaddr, ipa_len, &ip,
7513 flags, seq, vtep_ip);
7514 }
7515
7516 stream_failure:
7517 return;
7518 }
7519
7520 /*
7521 * Handle notification of MAC add/update over VxLAN. If the kernel is notifying
7522 * us, this must involve a multihoming scenario. Treat this as implicit delete
7523 * of any prior local MAC.
7524 */
7525 int zebra_vxlan_check_del_local_mac(struct interface *ifp,
7526 struct interface *br_if,
7527 struct ethaddr *macaddr, vlanid_t vid)
7528 {
7529 struct zebra_if *zif;
7530 struct zebra_l2info_vxlan *vxl;
7531 vni_t vni;
7532 zebra_vni_t *zvni;
7533 zebra_mac_t *mac;
7534 char buf[ETHER_ADDR_STRLEN];
7535
7536 zif = ifp->info;
7537 assert(zif);
7538 vxl = &zif->l2info.vxl;
7539 vni = vxl->vni;
7540
7541 /* Check if EVPN is enabled. */
7542 if (!is_evpn_enabled())
7543 return 0;
7544
7545 /* Locate hash entry; it is expected to exist. */
7546 zvni = zvni_lookup(vni);
7547 if (!zvni)
7548 return 0;
7549
7550 /* If entry doesn't exist, nothing to do. */
7551 mac = zvni_mac_lookup(zvni, macaddr);
7552 if (!mac)
7553 return 0;
7554
7555 /* Is it a local entry? */
7556 if (!CHECK_FLAG(mac->flags, ZEBRA_MAC_LOCAL))
7557 return 0;
7558
7559 if (IS_ZEBRA_DEBUG_VXLAN)
7560 zlog_debug(
7561 "Add/update remote MAC %s intf %s(%u) VNI %u flags 0x%x - del local",
7562 prefix_mac2str(macaddr, buf, sizeof(buf)), ifp->name,
7563 ifp->ifindex, vni, mac->flags);
7564
7565 /* Remove MAC from BGP. */
7566 zvni_mac_send_del_to_client(zvni->vni, macaddr);
7567
7568 /*
7569 * If there are no neigh associated with the mac delete the mac
7570 * else mark it as AUTO for forward reference
7571 */
7572 if (!listcount(mac->neigh_list)) {
7573 zvni_mac_del(zvni, mac);
7574 } else {
7575 UNSET_FLAG(mac->flags, ZEBRA_MAC_LOCAL);
7576 UNSET_FLAG(mac->flags, ZEBRA_MAC_STICKY);
7577 SET_FLAG(mac->flags, ZEBRA_MAC_AUTO);
7578 }
7579
7580 return 0;
7581 }
7582
7583 /*
7584 * Handle remote MAC delete by kernel; readd the remote MAC if we have it.
7585 * This can happen because the remote MAC entries are also added as "dynamic",
7586 * so the kernel can ageout the entry.
7587 */
7588 int zebra_vxlan_check_readd_remote_mac(struct interface *ifp,
7589 struct interface *br_if,
7590 struct ethaddr *macaddr, vlanid_t vid)
7591 {
7592 struct zebra_if *zif = NULL;
7593 struct zebra_l2info_vxlan *vxl = NULL;
7594 vni_t vni;
7595 zebra_vni_t *zvni = NULL;
7596 zebra_l3vni_t *zl3vni = NULL;
7597 zebra_mac_t *mac = NULL;
7598 char buf[ETHER_ADDR_STRLEN];
7599
7600 zif = ifp->info;
7601 assert(zif);
7602 vxl = &zif->l2info.vxl;
7603 vni = vxl->vni;
7604
7605 /* Check if EVPN is enabled. */
7606 if (!is_evpn_enabled())
7607 return 0;
7608
7609 /* check if this is a remote RMAC and readd simillar to remote macs */
7610 zl3vni = zl3vni_lookup(vni);
7611 if (zl3vni)
7612 return zebra_vxlan_readd_remote_rmac(zl3vni, macaddr);
7613
7614 /* Locate hash entry; it is expected to exist. */
7615 zvni = zvni_lookup(vni);
7616 if (!zvni)
7617 return 0;
7618
7619 /* If entry doesn't exist, nothing to do. */
7620 mac = zvni_mac_lookup(zvni, macaddr);
7621 if (!mac)
7622 return 0;
7623
7624 /* Is it a remote entry? */
7625 if (!CHECK_FLAG(mac->flags, ZEBRA_MAC_REMOTE))
7626 return 0;
7627
7628 if (IS_ZEBRA_DEBUG_VXLAN)
7629 zlog_debug("Del remote MAC %s intf %s(%u) VNI %u - readd",
7630 prefix_mac2str(macaddr, buf, sizeof(buf)), ifp->name,
7631 ifp->ifindex, vni);
7632
7633 zvni_mac_install(zvni, mac);
7634 return 0;
7635 }
7636
7637 /*
7638 * Handle local MAC delete (on a port or VLAN corresponding to this VNI).
7639 */
7640 int zebra_vxlan_local_mac_del(struct interface *ifp, struct interface *br_if,
7641 struct ethaddr *macaddr, vlanid_t vid)
7642 {
7643 zebra_vni_t *zvni;
7644 zebra_mac_t *mac;
7645 char buf[ETHER_ADDR_STRLEN];
7646
7647 /* We are interested in MACs only on ports or (port, VLAN) that
7648 * map to a VNI.
7649 */
7650 zvni = zvni_map_vlan(ifp, br_if, vid);
7651 if (!zvni)
7652 return 0;
7653 if (!zvni->vxlan_if) {
7654 zlog_debug(
7655 "VNI %u hash %p doesn't have intf upon local MAC DEL",
7656 zvni->vni, zvni);
7657 return -1;
7658 }
7659
7660 /* If entry doesn't exist, nothing to do. */
7661 mac = zvni_mac_lookup(zvni, macaddr);
7662 if (!mac)
7663 return 0;
7664
7665 /* Is it a local entry? */
7666 if (!CHECK_FLAG(mac->flags, ZEBRA_MAC_LOCAL))
7667 return 0;
7668
7669 if (IS_ZEBRA_DEBUG_VXLAN)
7670 zlog_debug("DEL MAC %s intf %s(%u) VID %u -> VNI %u seq %u flags 0x%x nbr count %u",
7671 prefix_mac2str(macaddr, buf, sizeof(buf)), ifp->name,
7672 ifp->ifindex, vid, zvni->vni, mac->loc_seq,
7673 mac->flags, listcount(mac->neigh_list));
7674
7675 /* Update all the neigh entries associated with this mac */
7676 zvni_process_neigh_on_local_mac_del(zvni, mac);
7677
7678 /* Remove MAC from BGP. */
7679 zvni_mac_send_del_to_client(zvni->vni, macaddr);
7680
7681 /*
7682 * If there are no neigh associated with the mac delete the mac
7683 * else mark it as AUTO for forward reference
7684 */
7685 if (!listcount(mac->neigh_list)) {
7686 zvni_mac_del(zvni, mac);
7687 } else {
7688 UNSET_FLAG(mac->flags, ZEBRA_MAC_LOCAL);
7689 UNSET_FLAG(mac->flags, ZEBRA_MAC_STICKY);
7690 SET_FLAG(mac->flags, ZEBRA_MAC_AUTO);
7691 }
7692
7693 return 0;
7694 }
7695
7696 /*
7697 * Handle local MAC add (on a port or VLAN corresponding to this VNI).
7698 */
7699 int zebra_vxlan_local_mac_add_update(struct interface *ifp,
7700 struct interface *br_if,
7701 struct ethaddr *macaddr, vlanid_t vid,
7702 bool sticky)
7703 {
7704 zebra_vni_t *zvni;
7705 zebra_mac_t *mac;
7706 struct zebra_vrf *zvrf;
7707 char buf[ETHER_ADDR_STRLEN];
7708 bool mac_sticky = false;
7709 bool inform_client = false;
7710 bool upd_neigh = false;
7711 bool is_dup_detect = false;
7712 struct in_addr vtep_ip = {.s_addr = 0};
7713
7714 /* We are interested in MACs only on ports or (port, VLAN) that
7715 * map to a VNI.
7716 */
7717 zvni = zvni_map_vlan(ifp, br_if, vid);
7718 if (!zvni) {
7719 if (IS_ZEBRA_DEBUG_VXLAN)
7720 zlog_debug(
7721 "\tAdd/Update %sMAC %s intf %s(%u) VID %u, could not find VNI",
7722 sticky ? "sticky " : "",
7723 prefix_mac2str(macaddr, buf, sizeof(buf)),
7724 ifp->name, ifp->ifindex, vid);
7725 return 0;
7726 }
7727
7728 if (!zvni->vxlan_if) {
7729 if (IS_ZEBRA_DEBUG_VXLAN)
7730 zlog_debug(
7731 "\tVNI %u hash %p doesn't have intf upon local MAC ADD",
7732 zvni->vni, zvni);
7733 return -1;
7734 }
7735
7736 zvrf = vrf_info_lookup(zvni->vxlan_if->vrf_id);
7737 if (!zvrf) {
7738 if (IS_ZEBRA_DEBUG_VXLAN)
7739 zlog_debug("\tNo Vrf found for vrf_id: %d",
7740 zvni->vxlan_if->vrf_id);
7741 return -1;
7742 }
7743
7744 /* Check if we need to create or update or it is a NO-OP. */
7745 mac = zvni_mac_lookup(zvni, macaddr);
7746 if (!mac) {
7747 if (IS_ZEBRA_DEBUG_VXLAN)
7748 zlog_debug(
7749 "ADD %sMAC %s intf %s(%u) VID %u -> VNI %u",
7750 sticky ? "sticky " : "",
7751 prefix_mac2str(macaddr, buf, sizeof(buf)),
7752 ifp->name, ifp->ifindex, vid, zvni->vni);
7753
7754 mac = zvni_mac_add(zvni, macaddr);
7755 if (!mac) {
7756 flog_err(
7757 EC_ZEBRA_MAC_ADD_FAILED,
7758 "Failed to add MAC %s intf %s(%u) VID %u VNI %u",
7759 prefix_mac2str(macaddr, buf, sizeof(buf)),
7760 ifp->name, ifp->ifindex, vid, zvni->vni);
7761 return -1;
7762 }
7763 SET_FLAG(mac->flags, ZEBRA_MAC_LOCAL);
7764 mac->fwd_info.local.ifindex = ifp->ifindex;
7765 mac->fwd_info.local.vid = vid;
7766 if (sticky)
7767 SET_FLAG(mac->flags, ZEBRA_MAC_STICKY);
7768 inform_client = true;
7769
7770 } else {
7771 if (IS_ZEBRA_DEBUG_VXLAN)
7772 zlog_debug(
7773 "UPD %sMAC %s intf %s(%u) VID %u -> VNI %u curFlags 0x%x",
7774 sticky ? "sticky " : "",
7775 prefix_mac2str(macaddr, buf, sizeof(buf)),
7776 ifp->name, ifp->ifindex, vid, zvni->vni,
7777 mac->flags);
7778
7779 if (CHECK_FLAG(mac->flags, ZEBRA_MAC_LOCAL)) {
7780 if (CHECK_FLAG(mac->flags, ZEBRA_MAC_STICKY))
7781 mac_sticky = true;
7782
7783 /*
7784 * Update any changes and if changes are relevant to
7785 * BGP, note it.
7786 */
7787 if (mac_sticky == sticky
7788 && mac->fwd_info.local.ifindex == ifp->ifindex
7789 && mac->fwd_info.local.vid == vid) {
7790 if (IS_ZEBRA_DEBUG_VXLAN)
7791 zlog_debug(
7792 "\tAdd/Update %sMAC %s intf %s(%u) VID %u -> VNI %u, "
7793 "entry exists and has not changed ",
7794 sticky ? "sticky " : "",
7795 prefix_mac2str(macaddr, buf,
7796 sizeof(buf)),
7797 ifp->name, ifp->ifindex, vid,
7798 zvni->vni);
7799 return 0;
7800 }
7801 if (mac_sticky != sticky) {
7802 if (sticky)
7803 SET_FLAG(mac->flags,
7804 ZEBRA_MAC_STICKY);
7805 else
7806 UNSET_FLAG(mac->flags,
7807 ZEBRA_MAC_STICKY);
7808 inform_client = true;
7809 }
7810
7811 memset(&mac->fwd_info, 0, sizeof(mac->fwd_info));
7812 mac->fwd_info.local.ifindex = ifp->ifindex;
7813 mac->fwd_info.local.vid = vid;
7814
7815 } else if (CHECK_FLAG(mac->flags, ZEBRA_MAC_REMOTE) ||
7816 CHECK_FLAG(mac->flags, ZEBRA_MAC_AUTO)) {
7817 bool do_dad = false;
7818
7819 /*
7820 * MAC has either moved or was "internally" created due
7821 * to a neighbor learn and is now actually learnt. If
7822 * it was learnt as a remote sticky MAC, this is an
7823 * operator error.
7824 */
7825 if (CHECK_FLAG(mac->flags, ZEBRA_MAC_STICKY)) {
7826 flog_warn(
7827 EC_ZEBRA_STICKY_MAC_ALREADY_LEARNT,
7828 "MAC %s already learnt as remote sticky MAC behind VTEP %s VNI %u",
7829 prefix_mac2str(macaddr, buf,
7830 sizeof(buf)),
7831 inet_ntoa(mac->fwd_info.r_vtep_ip),
7832 zvni->vni);
7833 return 0;
7834 }
7835
7836 /* If an actual move, compute MAC's seq number */
7837 if (CHECK_FLAG(mac->flags, ZEBRA_MAC_REMOTE)) {
7838 mac->loc_seq = MAX(mac->rem_seq + 1,
7839 mac->loc_seq);
7840 vtep_ip = mac->fwd_info.r_vtep_ip;
7841 /* Trigger DAD for remote MAC */
7842 do_dad = true;
7843 }
7844
7845 UNSET_FLAG(mac->flags, ZEBRA_MAC_REMOTE);
7846 UNSET_FLAG(mac->flags, ZEBRA_MAC_AUTO);
7847 SET_FLAG(mac->flags, ZEBRA_MAC_LOCAL);
7848 memset(&mac->fwd_info, 0, sizeof(mac->fwd_info));
7849 mac->fwd_info.local.ifindex = ifp->ifindex;
7850 mac->fwd_info.local.vid = vid;
7851 if (sticky)
7852 SET_FLAG(mac->flags, ZEBRA_MAC_STICKY);
7853 else
7854 UNSET_FLAG(mac->flags, ZEBRA_MAC_STICKY);
7855 /*
7856 * We have to inform BGP of this MAC as well as process
7857 * all neighbors.
7858 */
7859 inform_client = true;
7860 upd_neigh = true;
7861
7862 zebra_vxlan_dup_addr_detect_for_mac(zvrf, mac, vtep_ip,
7863 do_dad,
7864 &is_dup_detect,
7865 true);
7866 if (is_dup_detect) {
7867 inform_client = false;
7868 upd_neigh = false;
7869 }
7870 }
7871 }
7872
7873 /* Inform BGP if required. */
7874 if (inform_client) {
7875 if (zvni_mac_send_add_to_client(zvni->vni, macaddr,
7876 mac->flags, mac->loc_seq))
7877 return -1;
7878 }
7879
7880 /* Process all neighbors associated with this MAC, if required. */
7881 if (upd_neigh)
7882 zvni_process_neigh_on_local_mac_change(zvni, mac, 0);
7883
7884 return 0;
7885 }
7886
7887 /*
7888 * Handle message from client to delete a remote VTEP for a VNI.
7889 */
7890 void zebra_vxlan_remote_vtep_del(ZAPI_HANDLER_ARGS)
7891 {
7892 struct stream *s;
7893 unsigned short l = 0;
7894 vni_t vni;
7895 struct in_addr vtep_ip;
7896 zebra_vni_t *zvni;
7897 zebra_vtep_t *zvtep;
7898 struct interface *ifp;
7899 struct zebra_if *zif;
7900
7901 if (!is_evpn_enabled()) {
7902 zlog_debug(
7903 "%s: EVPN is not enabled yet we have received a vtep del command",
7904 __PRETTY_FUNCTION__);
7905 return;
7906 }
7907
7908 if (!EVPN_ENABLED(zvrf)) {
7909 zlog_debug("Recv MACIP DEL for non-EVPN VRF %u",
7910 zvrf_id(zvrf));
7911 return;
7912 }
7913
7914 s = msg;
7915
7916 while (l < hdr->length) {
7917 int flood_control __attribute__((unused));
7918
7919 /* Obtain each remote VTEP and process. */
7920 STREAM_GETL(s, vni);
7921 l += 4;
7922 STREAM_GET(&vtep_ip.s_addr, s, IPV4_MAX_BYTELEN);
7923 l += IPV4_MAX_BYTELEN;
7924
7925 /* Flood control is intentionally ignored right now */
7926 STREAM_GETL(s, flood_control);
7927 l += 4;
7928
7929 if (IS_ZEBRA_DEBUG_VXLAN)
7930 zlog_debug("Recv VTEP_DEL %s VNI %u from %s",
7931 inet_ntoa(vtep_ip), vni,
7932 zebra_route_string(client->proto));
7933
7934 /* Locate VNI hash entry - expected to exist. */
7935 zvni = zvni_lookup(vni);
7936 if (!zvni) {
7937 if (IS_ZEBRA_DEBUG_VXLAN)
7938 zlog_debug(
7939 "Failed to locate VNI hash upon remote VTEP DEL, "
7940 "VNI %u",
7941 vni);
7942 continue;
7943 }
7944
7945 ifp = zvni->vxlan_if;
7946 if (!ifp) {
7947 zlog_debug(
7948 "VNI %u hash %p doesn't have intf upon remote VTEP DEL",
7949 zvni->vni, zvni);
7950 continue;
7951 }
7952 zif = ifp->info;
7953
7954 /* If down or not mapped to a bridge, we're done. */
7955 if (!if_is_operative(ifp) || !zif->brslave_info.br_if)
7956 continue;
7957
7958 /* If the remote VTEP does not exist, there's nothing more to
7959 * do.
7960 * Otherwise, uninstall any remote MACs pointing to this VTEP
7961 * and
7962 * then, the VTEP entry itself and remove it.
7963 */
7964 zvtep = zvni_vtep_find(zvni, &vtep_ip);
7965 if (!zvtep)
7966 continue;
7967
7968 zvni_neigh_del_from_vtep(zvni, 1, &vtep_ip);
7969 zvni_mac_del_from_vtep(zvni, 1, &vtep_ip);
7970 zvni_vtep_uninstall(zvni, &vtep_ip);
7971 zvni_vtep_del(zvni, zvtep);
7972 }
7973
7974 stream_failure:
7975 return;
7976 }
7977
7978 /*
7979 * Handle message from client to add a remote VTEP for a VNI.
7980 */
7981 void zebra_vxlan_remote_vtep_add(ZAPI_HANDLER_ARGS)
7982 {
7983 struct stream *s;
7984 unsigned short l = 0;
7985 vni_t vni;
7986 struct in_addr vtep_ip;
7987 zebra_vni_t *zvni;
7988 struct interface *ifp;
7989 struct zebra_if *zif;
7990 int flood_control;
7991 zebra_vtep_t *zvtep;
7992
7993 if (!is_evpn_enabled()) {
7994 zlog_debug(
7995 "%s: EVPN not enabled yet we received a vtep_add zapi call",
7996 __PRETTY_FUNCTION__);
7997 return;
7998 }
7999
8000 if (!EVPN_ENABLED(zvrf)) {
8001 zlog_debug("Recv MACIP ADD for non-EVPN VRF %u",
8002 zvrf_id(zvrf));
8003 return;
8004 }
8005
8006 s = msg;
8007
8008 while (l < hdr->length) {
8009 /* Obtain each remote VTEP and process. */
8010 STREAM_GETL(s, vni);
8011 l += 4;
8012 STREAM_GET(&vtep_ip.s_addr, s, IPV4_MAX_BYTELEN);
8013 STREAM_GETL(s, flood_control);
8014 l += IPV4_MAX_BYTELEN + 4;
8015
8016 if (IS_ZEBRA_DEBUG_VXLAN)
8017 zlog_debug("Recv VTEP_ADD %s VNI %u flood %d from %s",
8018 inet_ntoa(vtep_ip), vni, flood_control,
8019 zebra_route_string(client->proto));
8020
8021 /* Locate VNI hash entry - expected to exist. */
8022 zvni = zvni_lookup(vni);
8023 if (!zvni) {
8024 flog_err(
8025 EC_ZEBRA_VTEP_ADD_FAILED,
8026 "Failed to locate VNI hash upon remote VTEP ADD, VNI %u",
8027 vni);
8028 continue;
8029 }
8030
8031 ifp = zvni->vxlan_if;
8032 if (!ifp) {
8033 flog_err(
8034 EC_ZEBRA_VTEP_ADD_FAILED,
8035 "VNI %u hash %p doesn't have intf upon remote VTEP ADD",
8036 zvni->vni, zvni);
8037 continue;
8038 }
8039
8040 zif = ifp->info;
8041
8042 /* If down or not mapped to a bridge, we're done. */
8043 if (!if_is_operative(ifp) || !zif->brslave_info.br_if)
8044 continue;
8045
8046 zvtep = zvni_vtep_find(zvni, &vtep_ip);
8047 if (zvtep) {
8048 /* If the remote VTEP already exists check if
8049 * the flood mode has changed
8050 */
8051 if (zvtep->flood_control != flood_control) {
8052 if (zvtep->flood_control
8053 == VXLAN_FLOOD_DISABLED)
8054 /* old mode was head-end-replication but
8055 * is no longer; get rid of the HER fdb
8056 * entry installed before
8057 */
8058 zvni_vtep_uninstall(zvni, &vtep_ip);
8059 zvtep->flood_control = flood_control;
8060 zvni_vtep_install(zvni, zvtep);
8061 }
8062 } else {
8063 zvtep = zvni_vtep_add(zvni, &vtep_ip, flood_control);
8064 if (zvtep)
8065 zvni_vtep_install(zvni, zvtep);
8066 else
8067 flog_err(EC_ZEBRA_VTEP_ADD_FAILED,
8068 "Failed to add remote VTEP, VNI %u zvni %p",
8069 vni, zvni);
8070 }
8071 }
8072
8073 stream_failure:
8074 return;
8075 }
8076
8077 /*
8078 * Add/Del gateway macip to evpn
8079 * g/w can be:
8080 * 1. SVI interface on a vlan aware bridge
8081 * 2. SVI interface on a vlan unaware bridge
8082 * 3. vrr interface (MACVLAN) associated to a SVI
8083 * We advertise macip routes for an interface if it is associated to VxLan vlan
8084 */
8085 int zebra_vxlan_add_del_gw_macip(struct interface *ifp, struct prefix *p,
8086 int add)
8087 {
8088 struct ipaddr ip;
8089 struct ethaddr macaddr;
8090 zebra_vni_t *zvni = NULL;
8091
8092 memset(&ip, 0, sizeof(struct ipaddr));
8093 memset(&macaddr, 0, sizeof(struct ethaddr));
8094
8095 /* Check if EVPN is enabled. */
8096 if (!is_evpn_enabled())
8097 return 0;
8098
8099 if (IS_ZEBRA_IF_MACVLAN(ifp)) {
8100 struct interface *svi_if =
8101 NULL; /* SVI corresponding to the MACVLAN */
8102 struct zebra_if *ifp_zif =
8103 NULL; /* Zebra daemon specific info for MACVLAN */
8104 struct zebra_if *svi_if_zif =
8105 NULL; /* Zebra daemon specific info for SVI*/
8106
8107 ifp_zif = ifp->info;
8108 if (!ifp_zif)
8109 return -1;
8110
8111 /*
8112 * for a MACVLAN interface the link represents the svi_if
8113 */
8114 svi_if = if_lookup_by_index_per_ns(zebra_ns_lookup(NS_DEFAULT),
8115 ifp_zif->link_ifindex);
8116 if (!svi_if) {
8117 zlog_debug("MACVLAN %s(%u) without link information",
8118 ifp->name, ifp->ifindex);
8119 return -1;
8120 }
8121
8122 if (IS_ZEBRA_IF_VLAN(svi_if)) {
8123 /*
8124 * If it is a vlan aware bridge then the link gives the
8125 * bridge information
8126 */
8127 struct interface *svi_if_link = NULL;
8128
8129 svi_if_zif = svi_if->info;
8130 if (svi_if_zif) {
8131 svi_if_link = if_lookup_by_index_per_ns(
8132 zebra_ns_lookup(NS_DEFAULT),
8133 svi_if_zif->link_ifindex);
8134 zvni = zvni_from_svi(svi_if, svi_if_link);
8135 }
8136 } else if (IS_ZEBRA_IF_BRIDGE(svi_if)) {
8137 /*
8138 * If it is a vlan unaware bridge then svi is the bridge
8139 * itself
8140 */
8141 zvni = zvni_from_svi(svi_if, svi_if);
8142 }
8143 } else if (IS_ZEBRA_IF_VLAN(ifp)) {
8144 struct zebra_if *svi_if_zif =
8145 NULL; /* Zebra daemon specific info for SVI */
8146 struct interface *svi_if_link =
8147 NULL; /* link info for the SVI = bridge info */
8148
8149 svi_if_zif = ifp->info;
8150 if (svi_if_zif) {
8151 svi_if_link = if_lookup_by_index_per_ns(
8152 zebra_ns_lookup(NS_DEFAULT),
8153 svi_if_zif->link_ifindex);
8154 if (svi_if_link)
8155 zvni = zvni_from_svi(ifp, svi_if_link);
8156 }
8157 } else if (IS_ZEBRA_IF_BRIDGE(ifp)) {
8158 zvni = zvni_from_svi(ifp, ifp);
8159 }
8160
8161 if (!zvni)
8162 return 0;
8163
8164 if (!zvni->vxlan_if) {
8165 zlog_debug("VNI %u hash %p doesn't have intf upon MACVLAN up",
8166 zvni->vni, zvni);
8167 return -1;
8168 }
8169
8170
8171 memcpy(&macaddr.octet, ifp->hw_addr, ETH_ALEN);
8172
8173 if (p->family == AF_INET) {
8174 ip.ipa_type = IPADDR_V4;
8175 memcpy(&(ip.ipaddr_v4), &(p->u.prefix4),
8176 sizeof(struct in_addr));
8177 } else if (p->family == AF_INET6) {
8178 ip.ipa_type = IPADDR_V6;
8179 memcpy(&(ip.ipaddr_v6), &(p->u.prefix6),
8180 sizeof(struct in6_addr));
8181 }
8182
8183
8184 if (add)
8185 zvni_gw_macip_add(ifp, zvni, &macaddr, &ip);
8186 else
8187 zvni_gw_macip_del(ifp, zvni, &ip);
8188
8189 return 0;
8190 }
8191
8192 /*
8193 * Handle SVI interface going down.
8194 * SVI can be associated to either L3-VNI or L2-VNI.
8195 * For L2-VNI: At this point, this is a NOP since
8196 * the kernel deletes the neighbor entries on this SVI (if any).
8197 * We only need to update the vrf corresponding to zvni.
8198 * For L3-VNI: L3-VNI is operationally down, update mac-ip routes and delete
8199 * from bgp
8200 */
8201 int zebra_vxlan_svi_down(struct interface *ifp, struct interface *link_if)
8202 {
8203 zebra_l3vni_t *zl3vni = NULL;
8204
8205 zl3vni = zl3vni_from_svi(ifp, link_if);
8206 if (zl3vni) {
8207
8208 /* process l3-vni down */
8209 zebra_vxlan_process_l3vni_oper_down(zl3vni);
8210
8211 /* remove association with svi-if */
8212 zl3vni->svi_if = NULL;
8213 } else {
8214 zebra_vni_t *zvni = NULL;
8215
8216 /* since we dont have svi corresponding to zvni, we associate it
8217 * to default vrf. Note: the corresponding neigh entries on the
8218 * SVI would have already been deleted */
8219 zvni = zvni_from_svi(ifp, link_if);
8220 if (zvni) {
8221 zvni->vrf_id = VRF_DEFAULT;
8222
8223 /* update the tenant vrf in BGP */
8224 zvni_send_add_to_client(zvni);
8225 }
8226 }
8227 return 0;
8228 }
8229
8230 /*
8231 * Handle SVI interface coming up.
8232 * SVI can be associated to L3-VNI (l3vni vxlan interface) or L2-VNI (l2-vni
8233 * vxlan intf).
8234 * For L2-VNI: we need to install any remote neighbors entried (used for
8235 * apr-suppression)
8236 * For L3-VNI: SVI will be used to get the rmac to be used with L3-VNI
8237 */
8238 int zebra_vxlan_svi_up(struct interface *ifp, struct interface *link_if)
8239 {
8240 zebra_vni_t *zvni = NULL;
8241 zebra_l3vni_t *zl3vni = NULL;
8242
8243 zl3vni = zl3vni_from_svi(ifp, link_if);
8244 if (zl3vni) {
8245
8246 /* associate with svi */
8247 zl3vni->svi_if = ifp;
8248
8249 /* process oper-up */
8250 if (is_l3vni_oper_up(zl3vni))
8251 zebra_vxlan_process_l3vni_oper_up(zl3vni);
8252 } else {
8253
8254 /* process SVI up for l2-vni */
8255 struct neigh_walk_ctx n_wctx;
8256
8257 zvni = zvni_from_svi(ifp, link_if);
8258 if (!zvni)
8259 return 0;
8260
8261 if (!zvni->vxlan_if) {
8262 zlog_debug(
8263 "VNI %u hash %p doesn't have intf upon SVI up",
8264 zvni->vni, zvni);
8265 return -1;
8266 }
8267
8268 if (IS_ZEBRA_DEBUG_VXLAN)
8269 zlog_debug(
8270 "SVI %s(%u) VNI %u VRF %s is UP, installing neighbors",
8271 ifp->name, ifp->ifindex, zvni->vni,
8272 vrf_id_to_name(ifp->vrf_id));
8273
8274 /* update the vrf information for l2-vni and inform bgp */
8275 zvni->vrf_id = ifp->vrf_id;
8276 zvni_send_add_to_client(zvni);
8277
8278 /* Install any remote neighbors for this VNI. */
8279 memset(&n_wctx, 0, sizeof(struct neigh_walk_ctx));
8280 n_wctx.zvni = zvni;
8281 hash_iterate(zvni->neigh_table, zvni_install_neigh_hash,
8282 &n_wctx);
8283 }
8284
8285 return 0;
8286 }
8287
8288 /*
8289 * Handle VxLAN interface down
8290 */
8291 int zebra_vxlan_if_down(struct interface *ifp)
8292 {
8293 vni_t vni;
8294 struct zebra_if *zif = NULL;
8295 struct zebra_l2info_vxlan *vxl = NULL;
8296 zebra_l3vni_t *zl3vni = NULL;
8297 zebra_vni_t *zvni;
8298
8299 /* Check if EVPN is enabled. */
8300 if (!is_evpn_enabled())
8301 return 0;
8302
8303 zif = ifp->info;
8304 assert(zif);
8305 vxl = &zif->l2info.vxl;
8306 vni = vxl->vni;
8307
8308 zl3vni = zl3vni_lookup(vni);
8309 if (zl3vni) {
8310 /* process-if-down for l3-vni */
8311 if (IS_ZEBRA_DEBUG_VXLAN)
8312 zlog_debug("Intf %s(%u) L3-VNI %u is DOWN", ifp->name,
8313 ifp->ifindex, vni);
8314
8315 zebra_vxlan_process_l3vni_oper_down(zl3vni);
8316 } else {
8317 /* process if-down for l2-vni */
8318 if (IS_ZEBRA_DEBUG_VXLAN)
8319 zlog_debug("Intf %s(%u) L2-VNI %u is DOWN", ifp->name,
8320 ifp->ifindex, vni);
8321
8322 /* Locate hash entry; it is expected to exist. */
8323 zvni = zvni_lookup(vni);
8324 if (!zvni) {
8325 zlog_debug(
8326 "Failed to locate VNI hash at DOWN, IF %s(%u) VNI %u",
8327 ifp->name, ifp->ifindex, vni);
8328 return -1;
8329 }
8330
8331 assert(zvni->vxlan_if == ifp);
8332
8333 /* Delete this VNI from BGP. */
8334 zvni_send_del_to_client(zvni->vni);
8335
8336 /* Free up all neighbors and MACs, if any. */
8337 zvni_neigh_del_all(zvni, 1, 0, DEL_ALL_NEIGH);
8338 zvni_mac_del_all(zvni, 1, 0, DEL_ALL_MAC);
8339
8340 /* Free up all remote VTEPs, if any. */
8341 zvni_vtep_del_all(zvni, 1);
8342 }
8343 return 0;
8344 }
8345
8346 /*
8347 * Handle VxLAN interface up - update BGP if required.
8348 */
8349 int zebra_vxlan_if_up(struct interface *ifp)
8350 {
8351 vni_t vni;
8352 struct zebra_if *zif = NULL;
8353 struct zebra_l2info_vxlan *vxl = NULL;
8354 zebra_vni_t *zvni = NULL;
8355 zebra_l3vni_t *zl3vni = NULL;
8356
8357 /* Check if EVPN is enabled. */
8358 if (!is_evpn_enabled())
8359 return 0;
8360
8361 zif = ifp->info;
8362 assert(zif);
8363 vxl = &zif->l2info.vxl;
8364 vni = vxl->vni;
8365
8366 zl3vni = zl3vni_lookup(vni);
8367 if (zl3vni) {
8368
8369 if (IS_ZEBRA_DEBUG_VXLAN)
8370 zlog_debug("Intf %s(%u) L3-VNI %u is UP", ifp->name,
8371 ifp->ifindex, vni);
8372
8373 /* we need to associate with SVI, if any, we can associate with
8374 * svi-if only after association with vxlan-intf is complete
8375 */
8376 zl3vni->svi_if = zl3vni_map_to_svi_if(zl3vni);
8377
8378 if (is_l3vni_oper_up(zl3vni))
8379 zebra_vxlan_process_l3vni_oper_up(zl3vni);
8380 } else {
8381 /* Handle L2-VNI add */
8382 struct interface *vlan_if = NULL;
8383
8384 if (IS_ZEBRA_DEBUG_VXLAN)
8385 zlog_debug("Intf %s(%u) L2-VNI %u is UP", ifp->name,
8386 ifp->ifindex, vni);
8387
8388 /* Locate hash entry; it is expected to exist. */
8389 zvni = zvni_lookup(vni);
8390 if (!zvni) {
8391 zlog_debug(
8392 "Failed to locate VNI hash at UP, IF %s(%u) VNI %u",
8393 ifp->name, ifp->ifindex, vni);
8394 return -1;
8395 }
8396
8397 assert(zvni->vxlan_if == ifp);
8398 vlan_if = zvni_map_to_svi(vxl->access_vlan,
8399 zif->brslave_info.br_if);
8400 if (vlan_if) {
8401 zvni->vrf_id = vlan_if->vrf_id;
8402 zl3vni = zl3vni_from_vrf(vlan_if->vrf_id);
8403 if (zl3vni)
8404 listnode_add_sort(zl3vni->l2vnis, zvni);
8405 }
8406
8407 /* If part of a bridge, inform BGP about this VNI. */
8408 /* Also, read and populate local MACs and neighbors. */
8409 if (zif->brslave_info.br_if) {
8410 zvni_send_add_to_client(zvni);
8411 zvni_read_mac_neigh(zvni, ifp);
8412 }
8413 }
8414
8415 return 0;
8416 }
8417
8418 /*
8419 * Handle VxLAN interface delete. Locate and remove entry in hash table
8420 * and update BGP, if required.
8421 */
8422 int zebra_vxlan_if_del(struct interface *ifp)
8423 {
8424 vni_t vni;
8425 struct zebra_if *zif = NULL;
8426 struct zebra_l2info_vxlan *vxl = NULL;
8427 zebra_vni_t *zvni = NULL;
8428 zebra_l3vni_t *zl3vni = NULL;
8429
8430 /* Check if EVPN is enabled. */
8431 if (!is_evpn_enabled())
8432 return 0;
8433
8434 zif = ifp->info;
8435 assert(zif);
8436 vxl = &zif->l2info.vxl;
8437 vni = vxl->vni;
8438
8439 zl3vni = zl3vni_lookup(vni);
8440 if (zl3vni) {
8441
8442 if (IS_ZEBRA_DEBUG_VXLAN)
8443 zlog_debug("Del L3-VNI %u intf %s(%u)", vni, ifp->name,
8444 ifp->ifindex);
8445
8446 /* process oper-down for l3-vni */
8447 zebra_vxlan_process_l3vni_oper_down(zl3vni);
8448
8449 /* remove the association with vxlan_if */
8450 memset(&zl3vni->local_vtep_ip, 0, sizeof(struct in_addr));
8451 zl3vni->vxlan_if = NULL;
8452 } else {
8453
8454 /* process if-del for l2-vni*/
8455 if (IS_ZEBRA_DEBUG_VXLAN)
8456 zlog_debug("Del L2-VNI %u intf %s(%u)", vni, ifp->name,
8457 ifp->ifindex);
8458
8459 /* Locate hash entry; it is expected to exist. */
8460 zvni = zvni_lookup(vni);
8461 if (!zvni) {
8462 zlog_debug(
8463 "Failed to locate VNI hash at del, IF %s(%u) VNI %u",
8464 ifp->name, ifp->ifindex, vni);
8465 return 0;
8466 }
8467
8468 /* remove from l3-vni list */
8469 zl3vni = zl3vni_from_vrf(zvni->vrf_id);
8470 if (zl3vni)
8471 listnode_delete(zl3vni->l2vnis, zvni);
8472
8473 /* Delete VNI from BGP. */
8474 zvni_send_del_to_client(zvni->vni);
8475
8476 /* Free up all neighbors and MAC, if any. */
8477 zvni_neigh_del_all(zvni, 0, 0, DEL_ALL_NEIGH);
8478 zvni_mac_del_all(zvni, 0, 0, DEL_ALL_MAC);
8479
8480 /* Free up all remote VTEPs, if any. */
8481 zvni_vtep_del_all(zvni, 0);
8482
8483 /* Delete the hash entry. */
8484 if (zvni_del(zvni)) {
8485 flog_err(EC_ZEBRA_VNI_DEL_FAILED,
8486 "Failed to del VNI hash %p, IF %s(%u) VNI %u",
8487 zvni, ifp->name, ifp->ifindex, zvni->vni);
8488 return -1;
8489 }
8490 }
8491 return 0;
8492 }
8493
8494 /*
8495 * Handle VxLAN interface update - change to tunnel IP, master or VLAN.
8496 */
8497 int zebra_vxlan_if_update(struct interface *ifp, uint16_t chgflags)
8498 {
8499 vni_t vni;
8500 struct zebra_if *zif = NULL;
8501 struct zebra_l2info_vxlan *vxl = NULL;
8502 zebra_vni_t *zvni = NULL;
8503 zebra_l3vni_t *zl3vni = NULL;
8504
8505 /* Check if EVPN is enabled. */
8506 if (!is_evpn_enabled())
8507 return 0;
8508
8509 zif = ifp->info;
8510 assert(zif);
8511 vxl = &zif->l2info.vxl;
8512 vni = vxl->vni;
8513
8514 zl3vni = zl3vni_lookup(vni);
8515 if (zl3vni) {
8516
8517 if (IS_ZEBRA_DEBUG_VXLAN)
8518 zlog_debug(
8519 "Update L3-VNI %u intf %s(%u) VLAN %u local IP %s master %u chg 0x%x",
8520 vni, ifp->name, ifp->ifindex, vxl->access_vlan,
8521 inet_ntoa(vxl->vtep_ip),
8522 zif->brslave_info.bridge_ifindex, chgflags);
8523
8524 /* Removed from bridge? Cleanup and return */
8525 if ((chgflags & ZEBRA_VXLIF_MASTER_CHANGE)
8526 && (zif->brslave_info.bridge_ifindex == IFINDEX_INTERNAL)) {
8527 zebra_vxlan_process_l3vni_oper_down(zl3vni);
8528 return 0;
8529 }
8530
8531 /* access-vlan change - process oper down, associate with new
8532 * svi_if and then process oper up again
8533 */
8534 if (chgflags & ZEBRA_VXLIF_VLAN_CHANGE) {
8535 if (if_is_operative(ifp)) {
8536 zebra_vxlan_process_l3vni_oper_down(zl3vni);
8537 zl3vni->svi_if = NULL;
8538 zl3vni->svi_if = zl3vni_map_to_svi_if(zl3vni);
8539 zl3vni->local_vtep_ip = vxl->vtep_ip;
8540 if (is_l3vni_oper_up(zl3vni))
8541 zebra_vxlan_process_l3vni_oper_up(
8542 zl3vni);
8543 }
8544 }
8545
8546 /*
8547 * local-ip change - process oper down, associate with new
8548 * local-ip and then process oper up again
8549 */
8550 if (chgflags & ZEBRA_VXLIF_LOCAL_IP_CHANGE) {
8551 if (if_is_operative(ifp)) {
8552 zebra_vxlan_process_l3vni_oper_down(zl3vni);
8553 zl3vni->local_vtep_ip = vxl->vtep_ip;
8554 if (is_l3vni_oper_up(zl3vni))
8555 zebra_vxlan_process_l3vni_oper_up(
8556 zl3vni);
8557 }
8558 }
8559
8560 /* Update local tunnel IP. */
8561 zl3vni->local_vtep_ip = vxl->vtep_ip;
8562
8563 /* if we have a valid new master, process l3-vni oper up */
8564 if (chgflags & ZEBRA_VXLIF_MASTER_CHANGE) {
8565 if (if_is_operative(ifp) && is_l3vni_oper_up(zl3vni))
8566 zebra_vxlan_process_l3vni_oper_up(zl3vni);
8567 }
8568 } else {
8569
8570 /* Update VNI hash. */
8571 zvni = zvni_lookup(vni);
8572 if (!zvni) {
8573 zlog_debug(
8574 "Failed to find L2-VNI hash on update, IF %s(%u) VNI %u",
8575 ifp->name, ifp->ifindex, vni);
8576 return -1;
8577 }
8578
8579 if (IS_ZEBRA_DEBUG_VXLAN)
8580 zlog_debug(
8581 "Update L2-VNI %u intf %s(%u) VLAN %u local IP %s master %u chg 0x%x",
8582 vni, ifp->name, ifp->ifindex, vxl->access_vlan,
8583 inet_ntoa(vxl->vtep_ip),
8584 zif->brslave_info.bridge_ifindex, chgflags);
8585
8586 /* Removed from bridge? Cleanup and return */
8587 if ((chgflags & ZEBRA_VXLIF_MASTER_CHANGE)
8588 && (zif->brslave_info.bridge_ifindex == IFINDEX_INTERNAL)) {
8589 /* Delete from client, remove all remote VTEPs */
8590 /* Also, free up all MACs and neighbors. */
8591 zvni_send_del_to_client(zvni->vni);
8592 zvni_neigh_del_all(zvni, 1, 0, DEL_ALL_NEIGH);
8593 zvni_mac_del_all(zvni, 1, 0, DEL_ALL_MAC);
8594 zvni_vtep_del_all(zvni, 1);
8595 return 0;
8596 }
8597
8598 /* Handle other changes. */
8599 if (chgflags & ZEBRA_VXLIF_VLAN_CHANGE) {
8600 /* Remove all existing local neigh and MACs for this VNI
8601 * (including from BGP)
8602 */
8603 zvni_neigh_del_all(zvni, 0, 1, DEL_LOCAL_MAC);
8604 zvni_mac_del_all(zvni, 0, 1, DEL_LOCAL_MAC);
8605 }
8606
8607 if (zvni->local_vtep_ip.s_addr != vxl->vtep_ip.s_addr ||
8608 zvni->mcast_grp.s_addr != vxl->mcast_grp.s_addr) {
8609 zebra_vxlan_sg_deref(zvni->local_vtep_ip,
8610 zvni->mcast_grp);
8611 zebra_vxlan_sg_ref(vxl->vtep_ip, vxl->mcast_grp);
8612 zvni->local_vtep_ip = vxl->vtep_ip;
8613 zvni->mcast_grp = vxl->mcast_grp;
8614 }
8615 zvni->vxlan_if = ifp;
8616
8617 /* Take further actions needed.
8618 * Note that if we are here, there is a change of interest.
8619 */
8620 /* If down or not mapped to a bridge, we're done. */
8621 if (!if_is_operative(ifp) || !zif->brslave_info.br_if)
8622 return 0;
8623
8624 /* Inform BGP, if there is a change of interest. */
8625 if (chgflags
8626 & (ZEBRA_VXLIF_MASTER_CHANGE |
8627 ZEBRA_VXLIF_LOCAL_IP_CHANGE |
8628 ZEBRA_VXLIF_MCAST_GRP_CHANGE))
8629 zvni_send_add_to_client(zvni);
8630
8631 /* If there is a valid new master or a VLAN mapping change,
8632 * read and populate local MACs and neighbors.
8633 * Also, reinstall any remote MACs and neighbors
8634 * for this VNI (based on new VLAN).
8635 */
8636 if (chgflags & ZEBRA_VXLIF_MASTER_CHANGE)
8637 zvni_read_mac_neigh(zvni, ifp);
8638 else if (chgflags & ZEBRA_VXLIF_VLAN_CHANGE) {
8639 struct mac_walk_ctx m_wctx;
8640 struct neigh_walk_ctx n_wctx;
8641
8642 zvni_read_mac_neigh(zvni, ifp);
8643
8644 memset(&m_wctx, 0, sizeof(struct mac_walk_ctx));
8645 m_wctx.zvni = zvni;
8646 hash_iterate(zvni->mac_table, zvni_install_mac_hash,
8647 &m_wctx);
8648
8649 memset(&n_wctx, 0, sizeof(struct neigh_walk_ctx));
8650 n_wctx.zvni = zvni;
8651 hash_iterate(zvni->neigh_table, zvni_install_neigh_hash,
8652 &n_wctx);
8653 }
8654 }
8655
8656 return 0;
8657 }
8658
8659 /*
8660 * Handle VxLAN interface add.
8661 */
8662 int zebra_vxlan_if_add(struct interface *ifp)
8663 {
8664 vni_t vni;
8665 struct zebra_if *zif = NULL;
8666 struct zebra_l2info_vxlan *vxl = NULL;
8667 zebra_vni_t *zvni = NULL;
8668 zebra_l3vni_t *zl3vni = NULL;
8669
8670 /* Check if EVPN is enabled. */
8671 if (!is_evpn_enabled())
8672 return 0;
8673
8674 zif = ifp->info;
8675 assert(zif);
8676 vxl = &zif->l2info.vxl;
8677 vni = vxl->vni;
8678
8679 zl3vni = zl3vni_lookup(vni);
8680 if (zl3vni) {
8681
8682 /* process if-add for l3-vni*/
8683 if (IS_ZEBRA_DEBUG_VXLAN)
8684 zlog_debug(
8685 "Add L3-VNI %u intf %s(%u) VLAN %u local IP %s master %u",
8686 vni, ifp->name, ifp->ifindex, vxl->access_vlan,
8687 inet_ntoa(vxl->vtep_ip),
8688 zif->brslave_info.bridge_ifindex);
8689
8690 /* associate with vxlan_if */
8691 zl3vni->local_vtep_ip = vxl->vtep_ip;
8692 zl3vni->vxlan_if = ifp;
8693
8694 /* Associate with SVI, if any. We can associate with svi-if only
8695 * after association with vxlan_if is complete */
8696 zl3vni->svi_if = zl3vni_map_to_svi_if(zl3vni);
8697
8698 if (is_l3vni_oper_up(zl3vni))
8699 zebra_vxlan_process_l3vni_oper_up(zl3vni);
8700 } else {
8701
8702 /* process if-add for l2-vni */
8703 struct interface *vlan_if = NULL;
8704
8705 /* Create or update VNI hash. */
8706 zvni = zvni_lookup(vni);
8707 if (!zvni) {
8708 zvni = zvni_add(vni);
8709 if (!zvni) {
8710 flog_err(
8711 EC_ZEBRA_VNI_ADD_FAILED,
8712 "Failed to add VNI hash, IF %s(%u) VNI %u",
8713 ifp->name, ifp->ifindex, vni);
8714 return -1;
8715 }
8716 }
8717
8718 if (zvni->local_vtep_ip.s_addr != vxl->vtep_ip.s_addr ||
8719 zvni->mcast_grp.s_addr != vxl->mcast_grp.s_addr) {
8720 zebra_vxlan_sg_deref(zvni->local_vtep_ip,
8721 zvni->mcast_grp);
8722 zebra_vxlan_sg_ref(vxl->vtep_ip, vxl->mcast_grp);
8723 zvni->local_vtep_ip = vxl->vtep_ip;
8724 zvni->mcast_grp = vxl->mcast_grp;
8725 }
8726 zvni->vxlan_if = ifp;
8727 vlan_if = zvni_map_to_svi(vxl->access_vlan,
8728 zif->brslave_info.br_if);
8729 if (vlan_if) {
8730 zvni->vrf_id = vlan_if->vrf_id;
8731 zl3vni = zl3vni_from_vrf(vlan_if->vrf_id);
8732 if (zl3vni)
8733 listnode_add_sort(zl3vni->l2vnis, zvni);
8734 }
8735
8736 if (IS_ZEBRA_DEBUG_VXLAN) {
8737 char addr_buf1[INET_ADDRSTRLEN];
8738 char addr_buf2[INET_ADDRSTRLEN];
8739
8740 inet_ntop(AF_INET, &vxl->vtep_ip,
8741 addr_buf1, INET_ADDRSTRLEN);
8742 inet_ntop(AF_INET, &vxl->mcast_grp,
8743 addr_buf2, INET_ADDRSTRLEN);
8744
8745 zlog_debug(
8746 "Add L2-VNI %u VRF %s intf %s(%u) VLAN %u local IP %s mcast_grp %s master %u",
8747 vni,
8748 vlan_if ? vrf_id_to_name(vlan_if->vrf_id)
8749 : VRF_DEFAULT_NAME,
8750 ifp->name, ifp->ifindex, vxl->access_vlan,
8751 addr_buf1, addr_buf2,
8752 zif->brslave_info.bridge_ifindex);
8753 }
8754
8755 /* If down or not mapped to a bridge, we're done. */
8756 if (!if_is_operative(ifp) || !zif->brslave_info.br_if)
8757 return 0;
8758
8759 /* Inform BGP */
8760 zvni_send_add_to_client(zvni);
8761
8762 /* Read and populate local MACs and neighbors */
8763 zvni_read_mac_neigh(zvni, ifp);
8764 }
8765
8766 return 0;
8767 }
8768
8769 int zebra_vxlan_process_vrf_vni_cmd(struct zebra_vrf *zvrf, vni_t vni,
8770 char *err, int err_str_sz, int filter,
8771 int add)
8772 {
8773 zebra_l3vni_t *zl3vni = NULL;
8774 struct zebra_vrf *zvrf_evpn = NULL;
8775
8776 zvrf_evpn = zebra_vrf_get_evpn();
8777 if (!zvrf_evpn)
8778 return -1;
8779
8780 if (IS_ZEBRA_DEBUG_VXLAN)
8781 zlog_debug("vrf %s vni %u %s", zvrf_name(zvrf), vni,
8782 add ? "ADD" : "DEL");
8783
8784 if (add) {
8785
8786 zebra_vxlan_handle_vni_transition(zvrf, vni, add);
8787
8788 /* check if the vni is already present under zvrf */
8789 if (zvrf->l3vni) {
8790 snprintf(err, err_str_sz,
8791 "VNI is already configured under the vrf");
8792 return -1;
8793 }
8794
8795 /* check if this VNI is already present in the system */
8796 zl3vni = zl3vni_lookup(vni);
8797 if (zl3vni) {
8798 snprintf(err, err_str_sz,
8799 "VNI is already configured as L3-VNI");
8800 return -1;
8801 }
8802
8803 /* add the L3-VNI to the global table */
8804 zl3vni = zl3vni_add(vni, zvrf_id(zvrf));
8805 if (!zl3vni) {
8806 snprintf(err, err_str_sz, "Could not add L3-VNI");
8807 return -1;
8808 }
8809
8810 /* associate the vrf with vni */
8811 zvrf->l3vni = vni;
8812
8813 /* set the filter in l3vni to denote if we are using l3vni only
8814 * for prefix routes
8815 */
8816 if (filter)
8817 SET_FLAG(zl3vni->filter, PREFIX_ROUTES_ONLY);
8818
8819 /* associate with vxlan-intf;
8820 * we need to associate with the vxlan-intf first
8821 */
8822 zl3vni->vxlan_if = zl3vni_map_to_vxlan_if(zl3vni);
8823
8824 /* associate with corresponding SVI interface, we can associate
8825 * with svi-if only after vxlan interface association is
8826 * complete
8827 */
8828 zl3vni->svi_if = zl3vni_map_to_svi_if(zl3vni);
8829
8830 /* formulate l2vni list */
8831 hash_iterate(zvrf_evpn->vni_table, zvni_add_to_l3vni_list,
8832 zl3vni);
8833
8834 if (is_l3vni_oper_up(zl3vni))
8835 zebra_vxlan_process_l3vni_oper_up(zl3vni);
8836
8837 } else {
8838 zl3vni = zl3vni_lookup(vni);
8839 if (!zl3vni) {
8840 snprintf(err, err_str_sz, "VNI doesn't exist");
8841 return -1;
8842 }
8843
8844 if (zvrf->l3vni != vni) {
8845 snprintf(err, err_str_sz,
8846 "VNI %d doesn't exist in VRF: %s",
8847 vni, zvrf->vrf->name);
8848 return -1;
8849 }
8850
8851 if (filter && !CHECK_FLAG(zl3vni->filter, PREFIX_ROUTES_ONLY)) {
8852 snprintf(err, ERR_STR_SZ,
8853 "prefix-routes-only is not set for the vni");
8854 return -1;
8855 }
8856
8857 zebra_vxlan_process_l3vni_oper_down(zl3vni);
8858
8859 /* delete and uninstall all rmacs */
8860 hash_iterate(zl3vni->rmac_table, zl3vni_del_rmac_hash_entry,
8861 zl3vni);
8862
8863 /* delete and uninstall all next-hops */
8864 hash_iterate(zl3vni->nh_table, zl3vni_del_nh_hash_entry,
8865 zl3vni);
8866
8867 zvrf->l3vni = 0;
8868 zl3vni_del(zl3vni);
8869
8870 zebra_vxlan_handle_vni_transition(zvrf, vni, add);
8871 }
8872 return 0;
8873 }
8874
8875 int zebra_vxlan_vrf_enable(struct zebra_vrf *zvrf)
8876 {
8877 zebra_l3vni_t *zl3vni = NULL;
8878
8879 if (zvrf->l3vni)
8880 zl3vni = zl3vni_lookup(zvrf->l3vni);
8881 if (!zl3vni)
8882 return 0;
8883
8884 zl3vni->vrf_id = zvrf_id(zvrf);
8885 if (is_l3vni_oper_up(zl3vni))
8886 zebra_vxlan_process_l3vni_oper_up(zl3vni);
8887 return 0;
8888 }
8889
8890 int zebra_vxlan_vrf_disable(struct zebra_vrf *zvrf)
8891 {
8892 zebra_l3vni_t *zl3vni = NULL;
8893
8894 if (zvrf->l3vni)
8895 zl3vni = zl3vni_lookup(zvrf->l3vni);
8896 if (!zl3vni)
8897 return 0;
8898
8899 zl3vni->vrf_id = VRF_UNKNOWN;
8900 zebra_vxlan_process_l3vni_oper_down(zl3vni);
8901 return 0;
8902 }
8903
8904 int zebra_vxlan_vrf_delete(struct zebra_vrf *zvrf)
8905 {
8906 zebra_l3vni_t *zl3vni = NULL;
8907 vni_t vni;
8908
8909 if (zvrf->l3vni)
8910 zl3vni = zl3vni_lookup(zvrf->l3vni);
8911 if (!zl3vni)
8912 return 0;
8913
8914 vni = zl3vni->vni;
8915 zl3vni_del(zl3vni);
8916 zebra_vxlan_handle_vni_transition(zvrf, vni, 0);
8917
8918 return 0;
8919 }
8920
8921 /*
8922 * Handle message from client to specify the flooding mechanism for
8923 * BUM packets. The default is to do head-end (ingress) replication
8924 * and the other supported option is to disable it. This applies to
8925 * all BUM traffic and disabling it applies to both the transmit and
8926 * receive direction.
8927 */
8928 void zebra_vxlan_flood_control(ZAPI_HANDLER_ARGS)
8929 {
8930 struct stream *s;
8931 enum vxlan_flood_control flood_ctrl;
8932
8933 if (!EVPN_ENABLED(zvrf)) {
8934 zlog_err("EVPN flood control for non-EVPN VRF %u",
8935 zvrf_id(zvrf));
8936 return;
8937 }
8938
8939 s = msg;
8940 STREAM_GETC(s, flood_ctrl);
8941
8942 if (IS_ZEBRA_DEBUG_VXLAN)
8943 zlog_debug("EVPN flood control %u, currently %u",
8944 flood_ctrl, zvrf->vxlan_flood_ctrl);
8945
8946 if (zvrf->vxlan_flood_ctrl == flood_ctrl)
8947 return;
8948
8949 zvrf->vxlan_flood_ctrl = flood_ctrl;
8950
8951 /* Install or uninstall flood entries corresponding to
8952 * remote VTEPs.
8953 */
8954 hash_iterate(zvrf->vni_table, zvni_handle_flooding_remote_vteps,
8955 zvrf);
8956
8957 stream_failure:
8958 return;
8959 }
8960
8961 /*
8962 * Handle message from client to enable/disable advertisement of svi macip
8963 * routes
8964 */
8965 void zebra_vxlan_advertise_svi_macip(ZAPI_HANDLER_ARGS)
8966 {
8967 struct stream *s;
8968 int advertise;
8969 vni_t vni = 0;
8970 zebra_vni_t *zvni = NULL;
8971 struct interface *ifp = NULL;
8972
8973 if (!EVPN_ENABLED(zvrf)) {
8974 zlog_debug("EVPN SVI-MACIP Adv for non-EVPN VRF %u",
8975 zvrf_id(zvrf));
8976 return;
8977 }
8978
8979 s = msg;
8980 STREAM_GETC(s, advertise);
8981 STREAM_GETL(s, vni);
8982
8983 if (!vni) {
8984 if (IS_ZEBRA_DEBUG_VXLAN)
8985 zlog_debug("EVPN SVI-MACIP Adv %s, currently %s",
8986 advertise ? "enabled" : "disabled",
8987 advertise_gw_macip_enabled(NULL)
8988 ? "enabled"
8989 : "disabled");
8990
8991 if (zvrf->advertise_svi_macip == advertise)
8992 return;
8993
8994
8995 if (advertise) {
8996 zvrf->advertise_svi_macip = advertise;
8997 hash_iterate(zvrf->vni_table,
8998 zvni_gw_macip_add_for_vni_hash, NULL);
8999 } else {
9000 hash_iterate(zvrf->vni_table,
9001 zvni_svi_macip_del_for_vni_hash, NULL);
9002 zvrf->advertise_svi_macip = advertise;
9003 }
9004
9005 } else {
9006 struct zebra_if *zif = NULL;
9007 struct zebra_l2info_vxlan zl2_info;
9008 struct interface *vlan_if = NULL;
9009
9010 zvni = zvni_lookup(vni);
9011 if (!zvni)
9012 return;
9013
9014 if (IS_ZEBRA_DEBUG_VXLAN)
9015 zlog_debug(
9016 "EVPN SVI macip Adv %s on VNI %d , currently %s",
9017 advertise ? "enabled" : "disabled", vni,
9018 advertise_svi_macip_enabled(zvni)
9019 ? "enabled"
9020 : "disabled");
9021
9022 if (zvni->advertise_svi_macip == advertise)
9023 return;
9024
9025 ifp = zvni->vxlan_if;
9026 if (!ifp)
9027 return;
9028
9029 zif = ifp->info;
9030
9031 /* If down or not mapped to a bridge, we're done. */
9032 if (!if_is_operative(ifp) || !zif->brslave_info.br_if)
9033 return;
9034
9035 zl2_info = zif->l2info.vxl;
9036
9037 vlan_if = zvni_map_to_svi(zl2_info.access_vlan,
9038 zif->brslave_info.br_if);
9039 if (!vlan_if)
9040 return;
9041
9042 if (advertise) {
9043 zvni->advertise_svi_macip = advertise;
9044 /* Add primary SVI MAC-IP */
9045 zvni_add_macip_for_intf(vlan_if, zvni);
9046 } else {
9047 /* Del primary MAC-IP */
9048 zvni_del_macip_for_intf(vlan_if, zvni);
9049 zvni->advertise_svi_macip = advertise;
9050 }
9051 }
9052
9053 stream_failure:
9054 return;
9055 }
9056
9057 /*
9058 * Handle message from client to enable/disable advertisement of g/w macip
9059 * routes
9060 */
9061 void zebra_vxlan_advertise_subnet(ZAPI_HANDLER_ARGS)
9062 {
9063 struct stream *s;
9064 int advertise;
9065 vni_t vni = 0;
9066 zebra_vni_t *zvni = NULL;
9067 struct interface *ifp = NULL;
9068 struct zebra_if *zif = NULL;
9069 struct zebra_l2info_vxlan zl2_info;
9070 struct interface *vlan_if = NULL;
9071
9072 if (!EVPN_ENABLED(zvrf)) {
9073 zlog_debug("EVPN GW-MACIP Adv for non-EVPN VRF %u",
9074 zvrf_id(zvrf));
9075 return;
9076 }
9077
9078 s = msg;
9079 STREAM_GETC(s, advertise);
9080 vni = stream_get3(s);
9081
9082 zvni = zvni_lookup(vni);
9083 if (!zvni)
9084 return;
9085
9086 if (zvni->advertise_subnet == advertise)
9087 return;
9088
9089 if (IS_ZEBRA_DEBUG_VXLAN)
9090 zlog_debug("EVPN subnet Adv %s on VNI %d , currently %s",
9091 advertise ? "enabled" : "disabled", vni,
9092 zvni->advertise_subnet ? "enabled" : "disabled");
9093
9094
9095 zvni->advertise_subnet = advertise;
9096
9097 ifp = zvni->vxlan_if;
9098 if (!ifp)
9099 return;
9100
9101 zif = ifp->info;
9102
9103 /* If down or not mapped to a bridge, we're done. */
9104 if (!if_is_operative(ifp) || !zif->brslave_info.br_if)
9105 return;
9106
9107 zl2_info = zif->l2info.vxl;
9108
9109 vlan_if =
9110 zvni_map_to_svi(zl2_info.access_vlan, zif->brslave_info.br_if);
9111 if (!vlan_if)
9112 return;
9113
9114 if (zvni->advertise_subnet)
9115 zvni_advertise_subnet(zvni, vlan_if, 1);
9116 else
9117 zvni_advertise_subnet(zvni, vlan_if, 0);
9118
9119 stream_failure:
9120 return;
9121 }
9122
9123 /*
9124 * Handle message from client to enable/disable advertisement of g/w macip
9125 * routes
9126 */
9127 void zebra_vxlan_advertise_gw_macip(ZAPI_HANDLER_ARGS)
9128 {
9129 struct stream *s;
9130 int advertise;
9131 vni_t vni = 0;
9132 zebra_vni_t *zvni = NULL;
9133 struct interface *ifp = NULL;
9134
9135 if (!EVPN_ENABLED(zvrf)) {
9136 zlog_debug("EVPN GW-MACIP Adv for non-EVPN VRF %u",
9137 zvrf_id(zvrf));
9138 return;
9139 }
9140
9141 s = msg;
9142 STREAM_GETC(s, advertise);
9143 STREAM_GETL(s, vni);
9144
9145 if (!vni) {
9146 if (IS_ZEBRA_DEBUG_VXLAN)
9147 zlog_debug("EVPN gateway macip Adv %s, currently %s",
9148 advertise ? "enabled" : "disabled",
9149 advertise_gw_macip_enabled(NULL)
9150 ? "enabled"
9151 : "disabled");
9152
9153 if (zvrf->advertise_gw_macip == advertise)
9154 return;
9155
9156 zvrf->advertise_gw_macip = advertise;
9157
9158 if (advertise_gw_macip_enabled(zvni))
9159 hash_iterate(zvrf->vni_table,
9160 zvni_gw_macip_add_for_vni_hash, NULL);
9161 else
9162 hash_iterate(zvrf->vni_table,
9163 zvni_gw_macip_del_for_vni_hash, NULL);
9164
9165 } else {
9166 struct zebra_if *zif = NULL;
9167 struct zebra_l2info_vxlan zl2_info;
9168 struct interface *vlan_if = NULL;
9169 struct interface *vrr_if = NULL;
9170
9171 zvni = zvni_lookup(vni);
9172 if (!zvni)
9173 return;
9174
9175 if (IS_ZEBRA_DEBUG_VXLAN)
9176 zlog_debug(
9177 "EVPN gateway macip Adv %s on VNI %d , currently %s",
9178 advertise ? "enabled" : "disabled", vni,
9179 advertise_gw_macip_enabled(zvni) ? "enabled"
9180 : "disabled");
9181
9182 if (zvni->advertise_gw_macip == advertise)
9183 return;
9184
9185 zvni->advertise_gw_macip = advertise;
9186
9187 ifp = zvni->vxlan_if;
9188 if (!ifp)
9189 return;
9190
9191 zif = ifp->info;
9192
9193 /* If down or not mapped to a bridge, we're done. */
9194 if (!if_is_operative(ifp) || !zif->brslave_info.br_if)
9195 return;
9196
9197 zl2_info = zif->l2info.vxl;
9198
9199 vlan_if = zvni_map_to_svi(zl2_info.access_vlan,
9200 zif->brslave_info.br_if);
9201 if (!vlan_if)
9202 return;
9203
9204 if (advertise_gw_macip_enabled(zvni)) {
9205 /* Add primary SVI MAC-IP */
9206 zvni_add_macip_for_intf(vlan_if, zvni);
9207
9208 /* Add VRR MAC-IP - if any*/
9209 vrr_if = zebra_get_vrr_intf_for_svi(vlan_if);
9210 if (vrr_if)
9211 zvni_add_macip_for_intf(vrr_if, zvni);
9212 } else {
9213 /* Del primary MAC-IP */
9214 zvni_del_macip_for_intf(vlan_if, zvni);
9215
9216 /* Del VRR MAC-IP - if any*/
9217 vrr_if = zebra_get_vrr_intf_for_svi(vlan_if);
9218 if (vrr_if)
9219 zvni_del_macip_for_intf(vrr_if, zvni);
9220 }
9221 }
9222
9223 stream_failure:
9224 return;
9225 }
9226
9227
9228 /*
9229 * Handle message from client to learn (or stop learning) about VNIs and MACs.
9230 * When enabled, the VNI hash table will be built and MAC FDB table read;
9231 * when disabled, the entries should be deleted and remote VTEPs and MACs
9232 * uninstalled from the kernel.
9233 * This also informs the setting for BUM handling at the time this change
9234 * occurs; it is relevant only when specifying "learn".
9235 */
9236 void zebra_vxlan_advertise_all_vni(ZAPI_HANDLER_ARGS)
9237 {
9238 struct stream *s = NULL;
9239 int advertise = 0;
9240 enum vxlan_flood_control flood_ctrl;
9241
9242 /* Mismatch between EVPN VRF and current VRF (should be prevented by
9243 * bgpd's cli) */
9244 if (is_evpn_enabled() && !EVPN_ENABLED(zvrf))
9245 return;
9246
9247 s = msg;
9248 STREAM_GETC(s, advertise);
9249 STREAM_GETC(s, flood_ctrl);
9250
9251 if (IS_ZEBRA_DEBUG_VXLAN)
9252 zlog_debug("EVPN VRF %s(%u) VNI Adv %s, currently %s, flood control %u",
9253 zvrf_name(zvrf), zvrf_id(zvrf),
9254 advertise ? "enabled" : "disabled",
9255 is_evpn_enabled() ? "enabled" : "disabled",
9256 flood_ctrl);
9257
9258 if (zvrf->advertise_all_vni == advertise)
9259 return;
9260
9261 zvrf->advertise_all_vni = advertise;
9262 if (EVPN_ENABLED(zvrf)) {
9263 zrouter.evpn_vrf = zvrf;
9264
9265 /* Note BUM handling */
9266 zvrf->vxlan_flood_ctrl = flood_ctrl;
9267
9268 /* Build VNI hash table and inform BGP. */
9269 zvni_build_hash_table();
9270
9271 /* Add all SVI (L3 GW) MACs to BGP*/
9272 hash_iterate(zvrf->vni_table, zvni_gw_macip_add_for_vni_hash,
9273 NULL);
9274
9275 /* Read the MAC FDB */
9276 macfdb_read(zvrf->zns);
9277
9278 /* Read neighbors */
9279 neigh_read(zvrf->zns);
9280 } else {
9281 /* Cleanup VTEPs for all VNIs - uninstall from
9282 * kernel and free entries.
9283 */
9284 hash_iterate(zvrf->vni_table, zvni_cleanup_all, zvrf);
9285
9286 /* cleanup all l3vnis */
9287 hash_iterate(zrouter.l3vni_table, zl3vni_cleanup_all, NULL);
9288
9289 /* Mark as "no EVPN VRF" */
9290 zrouter.evpn_vrf = NULL;
9291 }
9292
9293 stream_failure:
9294 return;
9295 }
9296
9297 /*
9298 * Allocate VNI hash table for this VRF and do other initialization.
9299 * NOTE: Currently supported only for default VRF.
9300 */
9301 void zebra_vxlan_init_tables(struct zebra_vrf *zvrf)
9302 {
9303 if (!zvrf)
9304 return;
9305 zvrf->vni_table = hash_create(vni_hash_keymake, vni_hash_cmp,
9306 "Zebra VRF VNI Table");
9307 zvrf->vxlan_sg_table = hash_create(zebra_vxlan_sg_hash_key_make,
9308 zebra_vxlan_sg_hash_eq, "Zebra VxLAN SG Table");
9309 }
9310
9311 /* Cleanup VNI info, but don't free the table. */
9312 void zebra_vxlan_cleanup_tables(struct zebra_vrf *zvrf)
9313 {
9314 if (!zvrf)
9315 return;
9316 hash_iterate(zvrf->vni_table, zvni_cleanup_all, zvrf);
9317 hash_iterate(zvrf->vxlan_sg_table, zebra_vxlan_sg_cleanup, NULL);
9318 }
9319
9320 /* Close all VNI handling */
9321 void zebra_vxlan_close_tables(struct zebra_vrf *zvrf)
9322 {
9323 if (!zvrf)
9324 return;
9325 hash_iterate(zvrf->vni_table, zvni_cleanup_all, zvrf);
9326 hash_free(zvrf->vni_table);
9327 }
9328
9329 /* init the l3vni table */
9330 void zebra_vxlan_init(void)
9331 {
9332 zrouter.l3vni_table = hash_create(l3vni_hash_keymake, l3vni_hash_cmp,
9333 "Zebra VRF L3 VNI table");
9334 zrouter.evpn_vrf = NULL;
9335 }
9336
9337 /* free l3vni table */
9338 void zebra_vxlan_disable(void)
9339 {
9340 hash_free(zrouter.l3vni_table);
9341 }
9342
9343 /* get the l3vni svi ifindex */
9344 ifindex_t get_l3vni_svi_ifindex(vrf_id_t vrf_id)
9345 {
9346 zebra_l3vni_t *zl3vni = NULL;
9347
9348 zl3vni = zl3vni_from_vrf(vrf_id);
9349 if (!zl3vni || !is_l3vni_oper_up(zl3vni))
9350 return 0;
9351
9352 return zl3vni->svi_if->ifindex;
9353 }
9354
9355 static int zebra_vxlan_dad_ip_auto_recovery_exp(struct thread *t)
9356 {
9357 struct zebra_vrf *zvrf = NULL;
9358 zebra_neigh_t *nbr = NULL;
9359 zebra_vni_t *zvni = NULL;
9360 char buf1[INET6_ADDRSTRLEN];
9361 char buf2[ETHER_ADDR_STRLEN];
9362
9363 nbr = THREAD_ARG(t);
9364
9365 /* since this is asynchronous we need sanity checks*/
9366 zvrf = vrf_info_lookup(nbr->zvni->vrf_id);
9367 if (!zvrf)
9368 return 0;
9369
9370 zvni = zvni_lookup(nbr->zvni->vni);
9371 if (!zvni)
9372 return 0;
9373
9374 nbr = zvni_neigh_lookup(zvni, &nbr->ip);
9375 if (!nbr)
9376 return 0;
9377
9378 if (IS_ZEBRA_DEBUG_VXLAN)
9379 zlog_debug("%s: duplicate addr MAC %s IP %s flags 0x%x learn count %u vni %u auto recovery expired",
9380 __PRETTY_FUNCTION__,
9381 prefix_mac2str(&nbr->emac, buf2, sizeof(buf2)),
9382 ipaddr2str(&nbr->ip, buf1, sizeof(buf1)),
9383 nbr->flags,
9384 nbr->dad_count, zvni->vni);
9385
9386 UNSET_FLAG(nbr->flags, ZEBRA_NEIGH_DUPLICATE);
9387 nbr->dad_count = 0;
9388 nbr->detect_start_time.tv_sec = 0;
9389 nbr->detect_start_time.tv_usec = 0;
9390 nbr->dad_dup_detect_time = 0;
9391 nbr->dad_ip_auto_recovery_timer = NULL;
9392 ZEBRA_NEIGH_SET_ACTIVE(nbr);
9393
9394 /* Send to BGP */
9395 if (CHECK_FLAG(nbr->flags, ZEBRA_NEIGH_LOCAL)) {
9396 zvni_neigh_send_add_to_client(zvni->vni, &nbr->ip, &nbr->emac,
9397 nbr->flags, nbr->loc_seq);
9398 } else if (!!CHECK_FLAG(nbr->flags, ZEBRA_NEIGH_REMOTE)) {
9399 zvni_neigh_install(zvni, nbr);
9400 }
9401
9402 return 0;
9403 }
9404
9405 static int zebra_vxlan_dad_mac_auto_recovery_exp(struct thread *t)
9406 {
9407 struct zebra_vrf *zvrf = NULL;
9408 zebra_mac_t *mac = NULL;
9409 zebra_vni_t *zvni = NULL;
9410 struct listnode *node = NULL;
9411 zebra_neigh_t *nbr = NULL;
9412 char buf[ETHER_ADDR_STRLEN];
9413
9414 mac = THREAD_ARG(t);
9415
9416 /* since this is asynchronous we need sanity checks*/
9417 zvrf = vrf_info_lookup(mac->zvni->vrf_id);
9418 if (!zvrf)
9419 return 0;
9420
9421 zvni = zvni_lookup(mac->zvni->vni);
9422 if (!zvni)
9423 return 0;
9424
9425 mac = zvni_mac_lookup(zvni, &mac->macaddr);
9426 if (!mac)
9427 return 0;
9428
9429 if (IS_ZEBRA_DEBUG_VXLAN)
9430 zlog_debug("%s: duplicate addr mac %s flags 0x%x learn count %u host count %u auto recovery expired",
9431 __PRETTY_FUNCTION__,
9432 prefix_mac2str(&mac->macaddr, buf, sizeof(buf)),
9433 mac->flags,
9434 mac->dad_count,
9435 listcount(mac->neigh_list));
9436
9437 /* Remove all IPs as duplicate associcated with this MAC */
9438 for (ALL_LIST_ELEMENTS_RO(mac->neigh_list, node, nbr)) {
9439 if (CHECK_FLAG(nbr->flags, ZEBRA_NEIGH_DUPLICATE)) {
9440 if (CHECK_FLAG(nbr->flags, ZEBRA_NEIGH_LOCAL))
9441 ZEBRA_NEIGH_SET_INACTIVE(nbr);
9442 else if (CHECK_FLAG(nbr->flags, ZEBRA_NEIGH_REMOTE))
9443 zvni_neigh_install(zvni, nbr);
9444 }
9445
9446 UNSET_FLAG(nbr->flags, ZEBRA_NEIGH_DUPLICATE);
9447 nbr->dad_count = 0;
9448 nbr->detect_start_time.tv_sec = 0;
9449 nbr->dad_dup_detect_time = 0;
9450 }
9451
9452 UNSET_FLAG(mac->flags, ZEBRA_MAC_DUPLICATE);
9453 mac->dad_count = 0;
9454 mac->detect_start_time.tv_sec = 0;
9455 mac->detect_start_time.tv_usec = 0;
9456 mac->dad_dup_detect_time = 0;
9457 mac->dad_mac_auto_recovery_timer = NULL;
9458
9459 if (CHECK_FLAG(mac->flags, ZEBRA_MAC_LOCAL)) {
9460 /* Inform to BGP */
9461 if (zvni_mac_send_add_to_client(zvni->vni, &mac->macaddr,
9462 mac->flags, mac->loc_seq))
9463 return -1;
9464
9465 /* Process all neighbors associated with this MAC. */
9466 zvni_process_neigh_on_local_mac_change(zvni, mac, 0);
9467
9468 } else if (CHECK_FLAG(mac->flags, ZEBRA_MAC_REMOTE)) {
9469 zvni_process_neigh_on_remote_mac_add(zvni, mac);
9470
9471 /* Install the entry. */
9472 zvni_mac_install(zvni, mac);
9473 }
9474
9475 return 0;
9476 }
9477
9478 /************************** vxlan SG cache management ************************/
9479 /* Inform PIM about the mcast group */
9480 static int zebra_vxlan_sg_send(struct zebra_vrf *zvrf,
9481 struct prefix_sg *sg,
9482 char *sg_str, uint16_t cmd)
9483 {
9484 struct zserv *client = NULL;
9485 struct stream *s = NULL;
9486
9487 client = zserv_find_client(ZEBRA_ROUTE_PIM, 0);
9488 if (!client)
9489 return 0;
9490
9491 if (!CHECK_FLAG(zvrf->flags, ZEBRA_PIM_SEND_VXLAN_SG))
9492 return 0;
9493
9494 s = stream_new(ZEBRA_MAX_PACKET_SIZ);
9495
9496 zclient_create_header(s, cmd, VRF_DEFAULT);
9497 stream_putl(s, IPV4_MAX_BYTELEN);
9498 stream_put(s, &sg->src.s_addr, IPV4_MAX_BYTELEN);
9499 stream_put(s, &sg->grp.s_addr, IPV4_MAX_BYTELEN);
9500
9501 /* Write packet size. */
9502 stream_putw_at(s, 0, stream_get_endp(s));
9503
9504 if (IS_ZEBRA_DEBUG_VXLAN)
9505 zlog_debug(
9506 "Send %s %s to %s",
9507 (cmd == ZEBRA_VXLAN_SG_ADD) ? "add" : "del", sg_str,
9508 zebra_route_string(client->proto));
9509
9510 if (cmd == ZEBRA_VXLAN_SG_ADD)
9511 client->vxlan_sg_add_cnt++;
9512 else
9513 client->vxlan_sg_del_cnt++;
9514
9515 return zserv_send_message(client, s);
9516 }
9517
9518 static unsigned int zebra_vxlan_sg_hash_key_make(const void *p)
9519 {
9520 const zebra_vxlan_sg_t *vxlan_sg = p;
9521
9522 return (jhash_2words(vxlan_sg->sg.src.s_addr,
9523 vxlan_sg->sg.grp.s_addr, 0));
9524 }
9525
9526 static bool zebra_vxlan_sg_hash_eq(const void *p1, const void *p2)
9527 {
9528 const zebra_vxlan_sg_t *sg1 = p1;
9529 const zebra_vxlan_sg_t *sg2 = p2;
9530
9531 return ((sg1->sg.src.s_addr == sg2->sg.src.s_addr)
9532 && (sg1->sg.grp.s_addr == sg2->sg.grp.s_addr));
9533 }
9534
9535 static zebra_vxlan_sg_t *zebra_vxlan_sg_new(struct zebra_vrf *zvrf,
9536 struct prefix_sg *sg)
9537 {
9538 zebra_vxlan_sg_t *vxlan_sg;
9539
9540 vxlan_sg = XCALLOC(MTYPE_ZVXLAN_SG, sizeof(*vxlan_sg));
9541
9542 vxlan_sg->zvrf = zvrf;
9543 vxlan_sg->sg = *sg;
9544 prefix_sg2str(sg, vxlan_sg->sg_str);
9545
9546 vxlan_sg = hash_get(zvrf->vxlan_sg_table, vxlan_sg, hash_alloc_intern);
9547
9548 if (IS_ZEBRA_DEBUG_VXLAN)
9549 zlog_debug("vxlan SG %s created", vxlan_sg->sg_str);
9550
9551 return vxlan_sg;
9552 }
9553
9554 static zebra_vxlan_sg_t *zebra_vxlan_sg_find(struct zebra_vrf *zvrf,
9555 struct prefix_sg *sg)
9556 {
9557 zebra_vxlan_sg_t lookup;
9558
9559 lookup.sg = *sg;
9560 return hash_lookup(zvrf->vxlan_sg_table, &lookup);
9561 }
9562
9563 static zebra_vxlan_sg_t *zebra_vxlan_sg_add(struct zebra_vrf *zvrf,
9564 struct prefix_sg *sg)
9565 {
9566 zebra_vxlan_sg_t *vxlan_sg;
9567 zebra_vxlan_sg_t *parent = NULL;
9568 struct in_addr sip;
9569
9570 vxlan_sg = zebra_vxlan_sg_find(zvrf, sg);
9571 if (vxlan_sg)
9572 return vxlan_sg;
9573
9574 /* create a *G entry for every BUM group implicitly -
9575 * 1. The SG entry is used by pimd to setup the vxlan-origination-mroute
9576 * 2. the XG entry is used by pimd to setup the
9577 * vxlan-termination-mroute
9578 */
9579 if (sg->src.s_addr) {
9580 memset(&sip, 0, sizeof(sip));
9581 parent = zebra_vxlan_sg_do_ref(zvrf, sip, sg->grp);
9582 if (!parent)
9583 return NULL;
9584 }
9585
9586 vxlan_sg = zebra_vxlan_sg_new(zvrf, sg);
9587 if (!vxlan_sg) {
9588 if (parent)
9589 zebra_vxlan_sg_do_deref(zvrf, sip, sg->grp);
9590 return vxlan_sg;
9591 }
9592
9593 zebra_vxlan_sg_send(zvrf, sg, vxlan_sg->sg_str,
9594 ZEBRA_VXLAN_SG_ADD);
9595
9596 return vxlan_sg;
9597 }
9598
9599 static void zebra_vxlan_sg_del(zebra_vxlan_sg_t *vxlan_sg)
9600 {
9601 struct in_addr sip;
9602 struct zebra_vrf *zvrf;
9603
9604 zvrf = vrf_info_lookup(VRF_DEFAULT);
9605 if (!zvrf)
9606 return;
9607
9608 /* On SG entry deletion remove the reference to its parent XG
9609 * entry
9610 */
9611 if (vxlan_sg->sg.src.s_addr) {
9612 memset(&sip, 0, sizeof(sip));
9613 zebra_vxlan_sg_do_deref(zvrf, sip, vxlan_sg->sg.grp);
9614 }
9615
9616 zebra_vxlan_sg_send(zvrf, &vxlan_sg->sg,
9617 vxlan_sg->sg_str, ZEBRA_VXLAN_SG_DEL);
9618
9619 hash_release(vxlan_sg->zvrf->vxlan_sg_table, vxlan_sg);
9620
9621 if (IS_ZEBRA_DEBUG_VXLAN)
9622 zlog_debug("VXLAN SG %s deleted", vxlan_sg->sg_str);
9623
9624 XFREE(MTYPE_ZVXLAN_SG, vxlan_sg);
9625 }
9626
9627 static void zebra_vxlan_sg_do_deref(struct zebra_vrf *zvrf,
9628 struct in_addr sip, struct in_addr mcast_grp)
9629 {
9630 zebra_vxlan_sg_t *vxlan_sg;
9631 struct prefix_sg sg;
9632
9633 sg.family = AF_INET;
9634 sg.prefixlen = IPV4_MAX_BYTELEN;
9635 sg.src = sip;
9636 sg.grp = mcast_grp;
9637 vxlan_sg = zebra_vxlan_sg_find(zvrf, &sg);
9638 if (!vxlan_sg)
9639 return;
9640
9641 if (vxlan_sg->ref_cnt)
9642 --vxlan_sg->ref_cnt;
9643
9644 if (!vxlan_sg->ref_cnt)
9645 zebra_vxlan_sg_del(vxlan_sg);
9646 }
9647
9648 static zebra_vxlan_sg_t *zebra_vxlan_sg_do_ref(struct zebra_vrf *zvrf,
9649 struct in_addr sip, struct in_addr mcast_grp)
9650 {
9651 zebra_vxlan_sg_t *vxlan_sg;
9652 struct prefix_sg sg;
9653
9654 sg.family = AF_INET;
9655 sg.prefixlen = IPV4_MAX_BYTELEN;
9656 sg.src = sip;
9657 sg.grp = mcast_grp;
9658 vxlan_sg = zebra_vxlan_sg_add(zvrf, &sg);
9659 if (vxlan_sg)
9660 ++vxlan_sg->ref_cnt;
9661
9662 return vxlan_sg;
9663 }
9664
9665 static void zebra_vxlan_sg_deref(struct in_addr local_vtep_ip,
9666 struct in_addr mcast_grp)
9667 {
9668 struct zebra_vrf *zvrf;
9669
9670 if (!local_vtep_ip.s_addr || !mcast_grp.s_addr)
9671 return;
9672
9673 zvrf = vrf_info_lookup(VRF_DEFAULT);
9674 if (!zvrf)
9675 return;
9676
9677 zebra_vxlan_sg_do_deref(zvrf, local_vtep_ip, mcast_grp);
9678 }
9679
9680 static void zebra_vxlan_sg_ref(struct in_addr local_vtep_ip,
9681 struct in_addr mcast_grp)
9682 {
9683 struct zebra_vrf *zvrf;
9684
9685 if (!local_vtep_ip.s_addr || !mcast_grp.s_addr)
9686 return;
9687
9688 zvrf = vrf_info_lookup(VRF_DEFAULT);
9689 if (!zvrf)
9690 return;
9691 zebra_vxlan_sg_do_ref(zvrf, local_vtep_ip, mcast_grp);
9692 }
9693
9694 static void zebra_vxlan_sg_cleanup(struct hash_backet *backet, void *arg)
9695 {
9696 zebra_vxlan_sg_t *vxlan_sg = (zebra_vxlan_sg_t *)backet->data;
9697
9698 zebra_vxlan_sg_del(vxlan_sg);
9699 }
9700
9701 static void zebra_vxlan_sg_replay_send(struct hash_backet *backet, void *arg)
9702 {
9703 zebra_vxlan_sg_t *vxlan_sg = (zebra_vxlan_sg_t *)backet->data;
9704
9705 zebra_vxlan_sg_send(vxlan_sg->zvrf, &vxlan_sg->sg,
9706 vxlan_sg->sg_str, ZEBRA_VXLAN_SG_ADD);
9707 }
9708
9709 /* Handle message from client to replay vxlan SG entries */
9710 void zebra_vxlan_sg_replay(ZAPI_HANDLER_ARGS)
9711 {
9712 if (IS_ZEBRA_DEBUG_VXLAN)
9713 zlog_debug("VxLAN SG updates to PIM, start");
9714
9715 SET_FLAG(zvrf->flags, ZEBRA_PIM_SEND_VXLAN_SG);
9716
9717 if (!EVPN_ENABLED(zvrf)) {
9718 if (IS_ZEBRA_DEBUG_VXLAN)
9719 zlog_debug("VxLAN SG replay request on unexpected vrf %d",
9720 zvrf->vrf->vrf_id);
9721 return;
9722 }
9723
9724 hash_iterate(zvrf->vxlan_sg_table, zebra_vxlan_sg_replay_send, NULL);
9725 }
9726
9727 /************************** EVPN BGP config management ************************/
9728 /* Notify Local MACs to the clienti, skips GW MAC */
9729 static void zvni_send_mac_hash_entry_to_client(struct hash_bucket *bucket,
9730 void *arg)
9731 {
9732 struct mac_walk_ctx *wctx = arg;
9733 zebra_mac_t *zmac = bucket->data;
9734
9735 if (CHECK_FLAG(zmac->flags, ZEBRA_MAC_DEF_GW))
9736 return;
9737
9738 if (CHECK_FLAG(zmac->flags, ZEBRA_MAC_LOCAL))
9739 zvni_mac_send_add_to_client(wctx->zvni->vni, &zmac->macaddr,
9740 zmac->flags, zmac->loc_seq);
9741 }
9742
9743 /* Iterator to Notify Local MACs of a L2VNI */
9744 static void zvni_send_mac_to_client(zebra_vni_t *zvni)
9745 {
9746 struct mac_walk_ctx wctx;
9747
9748 if (!zvni->mac_table)
9749 return;
9750
9751 memset(&wctx, 0, sizeof(struct mac_walk_ctx));
9752 wctx.zvni = zvni;
9753
9754 hash_iterate(zvni->mac_table, zvni_send_mac_hash_entry_to_client,
9755 &wctx);
9756 }
9757
9758 /* Notify Neighbor entries to the Client, skips the GW entry */
9759 static void zvni_send_neigh_hash_entry_to_client(struct hash_bucket *bucket,
9760 void *arg)
9761 {
9762 struct mac_walk_ctx *wctx = arg;
9763 zebra_neigh_t *zn = bucket->data;
9764 zebra_mac_t *zmac = NULL;
9765
9766 if (CHECK_FLAG(zn->flags, ZEBRA_NEIGH_DEF_GW))
9767 return;
9768
9769 if (CHECK_FLAG(zn->flags, ZEBRA_NEIGH_LOCAL) &&
9770 IS_ZEBRA_NEIGH_ACTIVE(zn)) {
9771 zmac = zvni_mac_lookup(wctx->zvni, &zn->emac);
9772 if (!zmac)
9773 return;
9774
9775 zvni_neigh_send_add_to_client(wctx->zvni->vni, &zn->ip,
9776 &zn->emac, zn->flags,
9777 zn->loc_seq);
9778 }
9779 }
9780
9781 /* Iterator of a specific L2VNI */
9782 static void zvni_send_neigh_to_client(zebra_vni_t *zvni)
9783 {
9784 struct neigh_walk_ctx wctx;
9785
9786 memset(&wctx, 0, sizeof(struct neigh_walk_ctx));
9787 wctx.zvni = zvni;
9788
9789 hash_iterate(zvni->neigh_table, zvni_send_neigh_hash_entry_to_client,
9790 &wctx);
9791 }
9792
9793 static void zvni_evpn_cfg_cleanup(struct hash_bucket *bucket, void *ctxt)
9794 {
9795 zebra_vni_t *zvni = NULL;
9796
9797 zvni = (zebra_vni_t *)bucket->data;
9798 zvni->advertise_gw_macip = 0;
9799 zvni->advertise_svi_macip = 0;
9800 zvni->advertise_subnet = 0;
9801
9802 zvni_neigh_del_all(zvni, 1, 0,
9803 DEL_REMOTE_NEIGH | DEL_REMOTE_NEIGH_FROM_VTEP);
9804 zvni_mac_del_all(zvni, 1, 0,
9805 DEL_REMOTE_MAC | DEL_REMOTE_MAC_FROM_VTEP);
9806 zvni_vtep_del_all(zvni, 1);
9807 }
9808
9809 /* Cleanup EVPN configuration of a specific VRF */
9810 static void zebra_evpn_vrf_cfg_cleanup(struct zebra_vrf *zvrf)
9811 {
9812 zebra_l3vni_t *zl3vni = NULL;
9813
9814 zvrf->advertise_all_vni = 0;
9815 zvrf->advertise_gw_macip = 0;
9816 zvrf->advertise_svi_macip = 0;
9817 zvrf->vxlan_flood_ctrl = VXLAN_FLOOD_HEAD_END_REPL;
9818
9819 hash_iterate(zvrf->vni_table, zvni_evpn_cfg_cleanup, NULL);
9820
9821 if (zvrf->l3vni)
9822 zl3vni = zl3vni_lookup(zvrf->l3vni);
9823 if (zl3vni) {
9824 /* delete and uninstall all rmacs */
9825 hash_iterate(zl3vni->rmac_table, zl3vni_del_rmac_hash_entry,
9826 zl3vni);
9827 /* delete and uninstall all next-hops */
9828 hash_iterate(zl3vni->nh_table, zl3vni_del_nh_hash_entry,
9829 zl3vni);
9830 }
9831 }
9832
9833 /* Cleanup BGP EVPN configuration upon client disconnect */
9834 static int zebra_evpn_bgp_cfg_clean_up(struct zserv *client)
9835 {
9836 struct vrf *vrf;
9837 struct zebra_vrf *zvrf;
9838
9839 RB_FOREACH (vrf, vrf_id_head, &vrfs_by_id) {
9840 zvrf = vrf->info;
9841 if (zvrf)
9842 zebra_evpn_vrf_cfg_cleanup(zvrf);
9843 }
9844
9845 return 0;
9846 }
9847
9848 static int zebra_evpn_pim_cfg_clean_up(struct zserv *client)
9849 {
9850 struct zebra_vrf *zvrf = zebra_vrf_get_evpn();
9851
9852 if (CHECK_FLAG(zvrf->flags, ZEBRA_PIM_SEND_VXLAN_SG)) {
9853 if (IS_ZEBRA_DEBUG_VXLAN)
9854 zlog_debug("VxLAN SG updates to PIM, stop");
9855 UNSET_FLAG(zvrf->flags, ZEBRA_PIM_SEND_VXLAN_SG);
9856 }
9857
9858 return 0;
9859 }
9860
9861 static int zebra_evpn_cfg_clean_up(struct zserv *client)
9862 {
9863 if (client->proto == ZEBRA_ROUTE_BGP)
9864 return zebra_evpn_bgp_cfg_clean_up(client);
9865
9866 if (client->proto == ZEBRA_ROUTE_PIM)
9867 return zebra_evpn_pim_cfg_clean_up(client);
9868
9869 return 0;
9870 }
9871
9872 /* Cleanup BGP EVPN configuration upon client disconnect */
9873 extern void zebra_evpn_init(void)
9874 {
9875 hook_register(zserv_client_close, zebra_evpn_cfg_clean_up);
9876 }
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