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zebra: re-add remote RMAC if needed
[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 "if.h"
26 #include "prefix.h"
27 #include "table.h"
28 #include "memory.h"
29 #include "log.h"
30 #include "linklist.h"
31 #include "stream.h"
32 #include "hash.h"
33 #include "jhash.h"
34 #include "vlan.h"
35 #include "vxlan.h"
36
37 #include "zebra/rib.h"
38 #include "zebra/rt.h"
39 #include "zebra/zebra_ns.h"
40 #include "zebra/zserv.h"
41 #include "zebra/debug.h"
42 #include "zebra/interface.h"
43 #include "zebra/zebra_vrf.h"
44 #include "zebra/rt_netlink.h"
45 #include "zebra/zebra_vxlan_private.h"
46 #include "zebra/zebra_vxlan.h"
47 #include "zebra/zebra_memory.h"
48 #include "zebra/zebra_l2.h"
49
50 DEFINE_MTYPE_STATIC(ZEBRA, HOST_PREFIX, "host prefix");
51 DEFINE_MTYPE_STATIC(ZEBRA, ZVNI, "VNI hash");
52 DEFINE_MTYPE_STATIC(ZEBRA, ZL3VNI, "L3 VNI hash");
53 DEFINE_MTYPE_STATIC(ZEBRA, ZVNI_VTEP, "VNI remote VTEP");
54 DEFINE_MTYPE_STATIC(ZEBRA, MAC, "VNI MAC");
55 DEFINE_MTYPE_STATIC(ZEBRA, NEIGH, "VNI Neighbor");
56
57 /* definitions */
58
59
60 /* static function declarations */
61 static int ip_prefix_send_to_client(vrf_id_t vrf_id,
62 struct prefix *p,
63 uint16_t cmd);
64 static void zvni_print_neigh(zebra_neigh_t *n, void *ctxt, json_object *json);
65 static void zvni_print_neigh_hash(struct hash_backet *backet, void *ctxt);
66 static void zvni_print_neigh_hash_all_vni(struct hash_backet *backet,
67 void **args);
68 static void zl3vni_print_nh(zebra_neigh_t *n, struct vty *vty,
69 json_object *json);
70 static void zl3vni_print_rmac(zebra_mac_t *zrmac, struct vty *vty,
71 json_object *json);
72 static void zvni_print_mac(zebra_mac_t *mac, void *ctxt);
73 static void zvni_print_mac_hash(struct hash_backet *backet, void *ctxt);
74 static void zvni_print_mac_hash_all_vni(struct hash_backet *backet, void *ctxt);
75 static void zvni_print(zebra_vni_t *zvni, void **ctxt);
76 static void zvni_print_hash(struct hash_backet *backet, void *ctxt[]);
77
78 static int zvni_macip_send_msg_to_client(vni_t vni,
79 struct ethaddr *macaddr,
80 struct ipaddr *ip, u_char flags,
81 u_int16_t cmd);
82 static unsigned int neigh_hash_keymake(void *p);
83 static int neigh_cmp(const void *p1, const void *p2);
84 static void *zvni_neigh_alloc(void *p);
85 static zebra_neigh_t *zvni_neigh_add(zebra_vni_t *zvni, struct ipaddr *ip,
86 struct ethaddr *mac);
87 static int zvni_neigh_del(zebra_vni_t *zvni, zebra_neigh_t *n);
88 static int zvni_neigh_del_hash_entry(struct hash_backet *backet, void *arg);
89 static void zvni_neigh_del_from_vtep(zebra_vni_t *zvni, int uninstall,
90 struct in_addr *r_vtep_ip);
91 static void zvni_neigh_del_all(zebra_vni_t *zvni,
92 int uninstall, int upd_client, u_int32_t flags);
93 static zebra_neigh_t *zvni_neigh_lookup(zebra_vni_t *zvni, struct ipaddr *ip);
94 static int zvni_neigh_send_add_to_client(vni_t vni,
95 struct ipaddr *ip,
96 struct ethaddr *macaddr, u_char flags);
97 static int zvni_neigh_send_del_to_client(vni_t vni,
98 struct ipaddr *ip,
99 struct ethaddr *macaddr, u_char flags);
100 static int zvni_neigh_install(zebra_vni_t *zvni, zebra_neigh_t *n);
101 static int zvni_neigh_uninstall(zebra_vni_t *zvni, zebra_neigh_t *n);
102 static zebra_vni_t *zvni_from_svi(struct interface *ifp,
103 struct interface *br_if);
104 static struct interface *zvni_map_to_svi(vlanid_t vid,
105 struct interface *br_if);
106
107 /* l3-vni next-hop neigh related APIs */
108 static zebra_neigh_t *zl3vni_nh_lookup(zebra_l3vni_t *zl3vni,
109 struct ipaddr *ip);
110 static void *zl3vni_nh_alloc(void *p);
111 static zebra_neigh_t *zl3vni_nh_add(zebra_l3vni_t *zl3vni,
112 struct ipaddr *vtep_ip,
113 struct ethaddr *rmac);
114 static int zl3vni_nh_del(zebra_l3vni_t *zl3vni, zebra_neigh_t *n);
115 static int zl3vni_nh_install(zebra_l3vni_t *zl3vni, zebra_neigh_t *n);
116 static int zl3vni_nh_uninstall(zebra_l3vni_t *zl3vni, zebra_neigh_t *n);
117
118 /* l3-vni rmac related APIs */
119 static void zl3vni_print_rmac_hash(struct hash_backet *, void *);
120 static zebra_mac_t *zl3vni_rmac_lookup(zebra_l3vni_t *zl3vni,
121 struct ethaddr *rmac);
122 static void *zl3vni_rmac_alloc(void *p);
123 static zebra_mac_t *zl3vni_rmac_add(zebra_l3vni_t *zl3vni,
124 struct ethaddr *rmac);
125 static int zl3vni_rmac_del(zebra_l3vni_t *zl3vni, zebra_mac_t *zrmac);
126 static int zl3vni_rmac_install(zebra_l3vni_t *zl3vni, zebra_mac_t *zrmac);
127 static int zl3vni_rmac_uninstall(zebra_l3vni_t *zl3vni,
128 zebra_mac_t *zrmac);
129
130 /* l3-vni related APIs*/
131 static int is_vni_l3(vni_t);
132 static zebra_l3vni_t *zl3vni_lookup(vni_t vni);
133 static void *zl3vni_alloc(void *p);
134 static zebra_l3vni_t *zl3vni_add(vni_t vni, vrf_id_t vrf_id);
135 static int zl3vni_del(zebra_l3vni_t *zl3vni);
136 static zebra_l3vni_t *zl3vni_from_vrf(vrf_id_t);
137 static struct interface *zl3vni_map_to_svi_if(zebra_l3vni_t *zl3vni);
138 static struct interface *zl3vni_map_to_vxlan_if(zebra_l3vni_t *zl3vni);
139 static void zebra_vxlan_process_l3vni_oper_up(zebra_l3vni_t *zl3vni);
140 static void zebra_vxlan_process_l3vni_oper_down(zebra_l3vni_t *zl3vni);
141
142 static unsigned int mac_hash_keymake(void *p);
143 static int mac_cmp(const void *p1, const void *p2);
144 static void *zvni_mac_alloc(void *p);
145 static zebra_mac_t *zvni_mac_add(zebra_vni_t *zvni, struct ethaddr *macaddr);
146 static int zvni_mac_del(zebra_vni_t *zvni, zebra_mac_t *mac);
147 static int zvni_mac_del_hash_entry(struct hash_backet *backet, void *arg);
148 static void zvni_mac_del_from_vtep(zebra_vni_t *zvni, int uninstall,
149 struct in_addr *r_vtep_ip);
150 static void zvni_mac_del_all(zebra_vni_t *zvni,
151 int uninstall, int upd_client, u_int32_t flags);
152 static zebra_mac_t *zvni_mac_lookup(zebra_vni_t *zvni, struct ethaddr *macaddr);
153 static int zvni_mac_send_add_to_client(vni_t vni,
154 struct ethaddr *macaddr, u_char flags);
155 static int zvni_mac_send_del_to_client(vni_t vni,
156 struct ethaddr *macaddr, u_char flags);
157 static zebra_vni_t *zvni_map_vlan(struct interface *ifp,
158 struct interface *br_if, vlanid_t vid);
159 static int zvni_mac_install(zebra_vni_t *zvni, zebra_mac_t *mac);
160 static int zvni_mac_uninstall(zebra_vni_t *zvni, zebra_mac_t *mac, int local);
161 static void zvni_install_mac_hash(struct hash_backet *backet, void *ctxt);
162
163 static unsigned int vni_hash_keymake(void *p);
164 static int vni_hash_cmp(const void *p1, const void *p2);
165 static void *zvni_alloc(void *p);
166 static zebra_vni_t *zvni_lookup(vni_t vni);
167 static zebra_vni_t *zvni_add(vni_t vni);
168 static int zvni_del(zebra_vni_t *zvni);
169 static int zvni_send_add_to_client(zebra_vni_t *zvni);
170 static int zvni_send_del_to_client(vni_t vni);
171 static void zvni_build_hash_table();
172 static int zvni_vtep_match(struct in_addr *vtep_ip, zebra_vtep_t *zvtep);
173 static zebra_vtep_t *zvni_vtep_find(zebra_vni_t *zvni, struct in_addr *vtep_ip);
174 static zebra_vtep_t *zvni_vtep_add(zebra_vni_t *zvni, struct in_addr *vtep_ip);
175 static int zvni_vtep_del(zebra_vni_t *zvni, zebra_vtep_t *zvtep);
176 static int zvni_vtep_del_all(zebra_vni_t *zvni, int uninstall);
177 static int zvni_vtep_install(zebra_vni_t *zvni, struct in_addr *vtep_ip);
178 static int zvni_vtep_uninstall(zebra_vni_t *zvni, struct in_addr *vtep_ip);
179 static int zvni_del_macip_for_intf(struct interface *ifp, zebra_vni_t *zvni);
180 static int zvni_add_macip_for_intf(struct interface *ifp, zebra_vni_t *zvni);
181 static int zvni_gw_macip_add(struct interface *ifp, zebra_vni_t *zvni,
182 struct ethaddr *macaddr, struct ipaddr *ip);
183 static int zvni_gw_macip_del(struct interface *ifp, zebra_vni_t *zvni,
184 struct ipaddr *ip);
185 struct interface *zebra_get_vrr_intf_for_svi(struct interface *ifp);
186 static int advertise_gw_macip_enabled(zebra_vni_t *zvni);
187 static void zvni_deref_ip2mac(zebra_vni_t *zvni, zebra_mac_t *mac,
188 int uninstall);
189
190 /* Private functions */
191
192 /*
193 * Return number of valid MACs in a VNI's MAC hash table - all
194 * remote MACs and non-internal (auto) local MACs count.
195 */
196 static u_int32_t num_valid_macs(zebra_vni_t *zvni)
197 {
198 unsigned int i;
199 u_int32_t num_macs = 0;
200 struct hash *hash;
201 struct hash_backet *hb;
202 zebra_mac_t *mac;
203
204 hash = zvni->mac_table;
205 if (!hash)
206 return num_macs;
207 for (i = 0; i < hash->size; i++) {
208 for (hb = hash->index[i]; hb; hb = hb->next) {
209 mac = (zebra_mac_t *)hb->data;
210 if (CHECK_FLAG(mac->flags, ZEBRA_MAC_REMOTE)
211 || !CHECK_FLAG(mac->flags, ZEBRA_MAC_AUTO))
212 num_macs++;
213 }
214 }
215
216 return num_macs;
217 }
218
219 static int advertise_gw_macip_enabled(zebra_vni_t *zvni)
220 {
221 struct zebra_vrf *zvrf;
222
223 zvrf = vrf_info_lookup(VRF_DEFAULT);
224 if (zvrf && zvrf->advertise_gw_macip)
225 return 1;
226
227 if (zvni && zvni->advertise_gw_macip)
228 return 1;
229
230 return 0;
231 }
232
233 /*
234 * Helper function to determine maximum width of neighbor IP address for
235 * display - just because we're dealing with IPv6 addresses that can
236 * widely vary.
237 */
238 static void zvni_find_neigh_addr_width(struct hash_backet *backet, void *ctxt)
239 {
240 zebra_neigh_t *n;
241 char buf[INET6_ADDRSTRLEN];
242 struct neigh_walk_ctx *wctx = ctxt;
243 int width;
244
245 n = (zebra_neigh_t *)backet->data;
246 if (!n)
247 return;
248
249 ipaddr2str(&n->ip, buf, sizeof(buf)), width = strlen(buf);
250 if (width > wctx->addr_width)
251 wctx->addr_width = width;
252 }
253
254 /*
255 * Print a specific neighbor entry.
256 */
257 static void zvni_print_neigh(zebra_neigh_t *n, void *ctxt, json_object *json)
258 {
259 struct vty *vty;
260 char buf1[ETHER_ADDR_STRLEN];
261 char buf2[INET6_ADDRSTRLEN];
262
263 ipaddr2str(&n->ip, buf2, sizeof(buf2));
264 prefix_mac2str(&n->emac, buf1, sizeof(buf1));
265 vty = (struct vty *)ctxt;
266 if (json == NULL) {
267 vty_out(vty, "IP: %s\n",
268 ipaddr2str(&n->ip, buf2, sizeof(buf2)));
269 vty_out(vty, " MAC: %s",
270 prefix_mac2str(&n->emac, buf1, sizeof(buf1)));
271 } else {
272 json_object_string_add(json, "ip", buf2);
273 json_object_string_add(json, "mac", buf1);
274 }
275 if (CHECK_FLAG(n->flags, ZEBRA_NEIGH_REMOTE)) {
276 if (json == NULL) {
277 vty_out(vty, " Remote VTEP: %s",
278 inet_ntoa(n->r_vtep_ip));
279 } else
280 json_object_string_add(json, "remoteVtep",
281 inet_ntoa(n->r_vtep_ip));
282 }
283 if (CHECK_FLAG(n->flags, ZEBRA_NEIGH_LOCAL)) {
284 if (!json) {
285 vty_out(vty, "\n");
286 vty_out(vty, " State: %s",
287 IS_ZEBRA_NEIGH_ACTIVE(n) ? "Active"
288 : "Inactive");
289 }
290 }
291 if (CHECK_FLAG(n->flags, ZEBRA_NEIGH_DEF_GW)) {
292 if (!json)
293 vty_out(vty, " Default-gateway");
294 else
295 json_object_boolean_true_add(json, "defaultGateway");
296 }
297 if (json == NULL)
298 vty_out(vty, "\n");
299 }
300
301 /*
302 * Print neighbor hash entry - called for display of all neighbors.
303 */
304 static void zvni_print_neigh_hash(struct hash_backet *backet, void *ctxt)
305 {
306 struct vty *vty;
307 json_object *json_vni = NULL, *json_row = NULL;
308 zebra_neigh_t *n;
309 char buf1[ETHER_ADDR_STRLEN];
310 char buf2[INET6_ADDRSTRLEN];
311 struct neigh_walk_ctx *wctx = ctxt;
312
313 vty = wctx->vty;
314 json_vni = wctx->json;
315 n = (zebra_neigh_t *)backet->data;
316 if (!n)
317 return;
318
319 if (json_vni)
320 json_row = json_object_new_object();
321
322 prefix_mac2str(&n->emac, buf1, sizeof(buf1));
323 ipaddr2str(&n->ip, buf2, sizeof(buf2));
324 if (CHECK_FLAG(n->flags, ZEBRA_NEIGH_LOCAL)
325 && !(wctx->flags & SHOW_REMOTE_NEIGH_FROM_VTEP)) {
326 if (json_vni == NULL) {
327 vty_out(vty, "%*s %-6s %-17s\n", -wctx->addr_width,
328 buf2, "local", buf1);
329 } else {
330 json_object_string_add(json_row, "type", "local");
331 json_object_string_add(json_row, "mac", buf1);
332 }
333 wctx->count++;
334 } else {
335 if (wctx->flags & SHOW_REMOTE_NEIGH_FROM_VTEP) {
336 if (IPV4_ADDR_SAME(&n->r_vtep_ip, &wctx->r_vtep_ip)) {
337 if (json_vni == NULL) {
338 if (wctx->count == 0)
339 vty_out(vty,
340 "%*s %-6s %-17s %-21s\n",
341 -wctx->addr_width,
342 "Neighbor", "Type",
343 "MAC", "Remote VTEP");
344 vty_out(vty, "%*s %-6s %-17s %-21s\n",
345 -wctx->addr_width, buf2,
346 "remote", buf1,
347 inet_ntoa(n->r_vtep_ip));
348 } else {
349 json_object_string_add(json_row, "type",
350 "remote");
351 json_object_string_add(json_row, "mac",
352 buf1);
353 json_object_string_add(
354 json_row, "remoteVtep",
355 inet_ntoa(n->r_vtep_ip));
356 }
357 wctx->count++;
358 }
359 } else {
360 if (json_vni == NULL) {
361 vty_out(vty, "%*s %-6s %-17s %-21s\n",
362 -wctx->addr_width, buf2, "remote", buf1,
363 inet_ntoa(n->r_vtep_ip));
364 } else {
365 json_object_string_add(json_row, "type",
366 "remote");
367 json_object_string_add(json_row, "mac", buf1);
368 json_object_string_add(json_row, "remoteVtep",
369 inet_ntoa(n->r_vtep_ip));
370 }
371 wctx->count++;
372 }
373 }
374
375 if (json_vni)
376 json_object_object_add(json_vni, buf2, json_row);
377 }
378
379 /*
380 * Print neighbors for all VNI.
381 */
382 static void zvni_print_neigh_hash_all_vni(struct hash_backet *backet,
383 void **args)
384 {
385 struct vty *vty;
386 json_object *json = NULL, *json_vni = NULL;
387 zebra_vni_t *zvni;
388 u_int32_t num_neigh;
389 struct neigh_walk_ctx wctx;
390 char vni_str[VNI_STR_LEN];
391
392 vty = (struct vty *)args[0];
393 json = (json_object *)args[1];
394
395 zvni = (zebra_vni_t *)backet->data;
396 if (!zvni) {
397 if (json)
398 vty_out(vty, "{}\n");
399 return;
400 }
401 num_neigh = hashcount(zvni->neigh_table);
402 if (json == NULL)
403 vty_out(vty,
404 "\nVNI %u #ARP (IPv4 and IPv6, local and remote) %u\n\n",
405 zvni->vni, num_neigh);
406 else {
407 json_vni = json_object_new_object();
408 json_object_int_add(json_vni, "numArpNd", num_neigh);
409 snprintf(vni_str, VNI_STR_LEN, "%u", zvni->vni);
410 }
411 if (!num_neigh) {
412 if (json)
413 json_object_object_add(json, vni_str, json_vni);
414 return;
415 }
416
417 /* Since we have IPv6 addresses to deal with which can vary widely in
418 * size, we try to be a bit more elegant in display by first computing
419 * the maximum width.
420 */
421 memset(&wctx, 0, sizeof(struct neigh_walk_ctx));
422 wctx.zvni = zvni;
423 wctx.vty = vty;
424 wctx.addr_width = 15;
425 wctx.json = json_vni;
426 hash_iterate(zvni->neigh_table, zvni_find_neigh_addr_width, &wctx);
427
428 if (json == NULL)
429 vty_out(vty, "%*s %-6s %-17s %-21s\n", -wctx.addr_width, "IP",
430 "Type", "MAC", "Remote VTEP");
431 hash_iterate(zvni->neigh_table, zvni_print_neigh_hash, &wctx);
432
433 if (json)
434 json_object_object_add(json, vni_str, json_vni);
435 }
436
437 /* print a specific next hop for an l3vni */
438 static void zl3vni_print_nh(zebra_neigh_t *n,
439 struct vty *vty,
440 json_object *json)
441 {
442 char buf1[ETHER_ADDR_STRLEN];
443 char buf2[INET6_ADDRSTRLEN];
444 struct listnode *node = NULL;
445 struct prefix *p = NULL;
446 json_object *json_hosts = NULL;
447
448 if (!json) {
449 vty_out(vty, "Ip: %s\n",
450 ipaddr2str(&n->ip, buf2, sizeof(buf2)));
451 vty_out(vty, " RMAC: %s\n",
452 prefix_mac2str(&n->emac, buf1, sizeof(buf1)));
453 vty_out(vty, " Refcount: %d\n", listcount(n->host_list));
454 vty_out(vty, " Prefixes:\n");
455 for (ALL_LIST_ELEMENTS_RO(n->host_list, node, p))
456 vty_out(vty, " %s\n",
457 prefix2str(p, buf2, sizeof(buf2)));
458 } else {
459 json_hosts = json_object_new_array();
460 json_object_string_add(json, "ip",
461 ipaddr2str(&(n->ip), buf2,
462 sizeof(buf2)));
463 json_object_string_add(json, "routerMac",
464 prefix_mac2str(&n->emac, buf2,
465 sizeof(buf2)));
466 json_object_int_add(json, "refCount", listcount(n->host_list));
467 for (ALL_LIST_ELEMENTS_RO(n->host_list, node, p))
468 json_object_array_add(json_hosts,
469 json_object_new_string(
470 prefix2str(p, buf2,
471 sizeof(buf2))));
472 json_object_object_add(json, "prefixList", json_hosts);
473 }
474 }
475
476 /* Print a specific RMAC entry */
477 static void zl3vni_print_rmac(zebra_mac_t *zrmac,
478 struct vty *vty,
479 json_object *json)
480 {
481 char buf1[ETHER_ADDR_STRLEN];
482 char buf2[PREFIX_STRLEN];
483 struct listnode *node = NULL;
484 struct prefix *p = NULL;
485 json_object *json_hosts = NULL;
486
487 if (!json) {
488 vty_out(vty, "MAC: %s\n",
489 prefix_mac2str(&zrmac->macaddr, buf1, sizeof(buf1)));
490 vty_out(vty, " Remote VTEP: %s\n",
491 inet_ntoa(zrmac->fwd_info.r_vtep_ip));
492 vty_out(vty, " Refcount: %d\n", listcount(zrmac->host_list));
493 vty_out(vty, " Prefixes:\n");
494 for (ALL_LIST_ELEMENTS_RO(zrmac->host_list, node, p))
495 vty_out(vty, " %s\n",
496 prefix2str(p, buf2, sizeof(buf2)));
497 } else {
498 json_hosts = json_object_new_array();
499 json_object_string_add(json, "routerMac",
500 prefix_mac2str(&zrmac->macaddr,
501 buf1,
502 sizeof(buf1)));
503 json_object_string_add(json, "vtepIp",
504 inet_ntoa(zrmac->fwd_info.r_vtep_ip));
505 json_object_int_add(json, "refCount",
506 listcount(zrmac->host_list));
507 for (ALL_LIST_ELEMENTS_RO(zrmac->host_list, node, p))
508 json_object_array_add(json_hosts,
509 json_object_new_string(
510 prefix2str(p, buf2,
511 sizeof(buf2))));
512 json_object_object_add(json, "prefixList", json_hosts);
513 }
514 }
515
516 /*
517 * Print a specific MAC entry.
518 */
519 static void zvni_print_mac(zebra_mac_t *mac, void *ctxt)
520 {
521 struct vty *vty;
522 zebra_neigh_t *n = NULL;
523 struct listnode *node = NULL;
524 char buf1[20];
525 char buf2[INET6_ADDRSTRLEN];
526
527 vty = (struct vty *)ctxt;
528 vty_out(vty, "MAC: %s",
529 prefix_mac2str(&mac->macaddr, buf1, sizeof(buf1)));
530 if (CHECK_FLAG(mac->flags, ZEBRA_MAC_LOCAL)) {
531 struct zebra_ns *zns;
532 struct interface *ifp;
533 ifindex_t ifindex;
534
535 ifindex = mac->fwd_info.local.ifindex;
536 zns = zebra_ns_lookup(NS_DEFAULT);
537 ifp = if_lookup_by_index_per_ns(zns, ifindex);
538 if (!ifp) // unexpected
539 return;
540 vty_out(vty, " Intf: %s(%u)", ifp->name, ifindex);
541 if (mac->fwd_info.local.vid)
542 vty_out(vty, " VLAN: %u", mac->fwd_info.local.vid);
543 } else if (CHECK_FLAG(mac->flags, ZEBRA_MAC_REMOTE)) {
544 vty_out(vty, " Remote VTEP: %s",
545 inet_ntoa(mac->fwd_info.r_vtep_ip));
546 } else if (CHECK_FLAG(mac->flags, ZEBRA_MAC_AUTO)) {
547 vty_out(vty, " Auto Mac ");
548 }
549
550 if (CHECK_FLAG(mac->flags, ZEBRA_MAC_STICKY))
551 vty_out(vty, " Sticky Mac ");
552
553 if (CHECK_FLAG(mac->flags, ZEBRA_MAC_DEF_GW))
554 vty_out(vty, " Default-gateway Mac ");
555
556 vty_out(vty, "\n");
557 /* print all the associated neigh */
558 vty_out(vty, " Neighbors:\n");
559 if (!listcount(mac->neigh_list))
560 vty_out(vty, " No Neighbors\n");
561 else {
562 for (ALL_LIST_ELEMENTS_RO(mac->neigh_list, node, n)) {
563 vty_out(vty, " %s %s\n",
564 ipaddr2str(&n->ip, buf2, sizeof(buf2)),
565 CHECK_FLAG(n->flags, ZEBRA_MAC_LOCAL)
566 ? (IS_ZEBRA_NEIGH_ACTIVE(n)
567 ? "Active"
568 : "Inactive")
569 : "");
570 }
571 }
572
573 vty_out(vty, "\n");
574 }
575
576 /*
577 * Print MAC hash entry - called for display of all MACs.
578 */
579 static void zvni_print_mac_hash(struct hash_backet *backet, void *ctxt)
580 {
581 struct vty *vty;
582 json_object *json_mac_hdr = NULL, *json_mac = NULL;
583 zebra_mac_t *mac;
584 char buf1[20];
585 struct mac_walk_ctx *wctx = ctxt;
586
587 vty = wctx->vty;
588 json_mac_hdr = wctx->json;
589 mac = (zebra_mac_t *)backet->data;
590 if (!mac)
591 return;
592
593 prefix_mac2str(&mac->macaddr, buf1, sizeof(buf1));
594
595 if (json_mac_hdr)
596 json_mac = json_object_new_object();
597
598 if (CHECK_FLAG(mac->flags, ZEBRA_MAC_LOCAL)
599 && !(wctx->flags & SHOW_REMOTE_MAC_FROM_VTEP)) {
600 struct zebra_ns *zns;
601 ifindex_t ifindex;
602 struct interface *ifp;
603 vlanid_t vid;
604
605 zns = zebra_ns_lookup(NS_DEFAULT);
606 ifindex = mac->fwd_info.local.ifindex;
607 ifp = if_lookup_by_index_per_ns(zns, ifindex);
608 if (!ifp) // unexpected
609 return;
610 vid = mac->fwd_info.local.vid;
611 if (json_mac_hdr == NULL)
612 vty_out(vty, "%-17s %-6s %-21s", buf1, "local",
613 ifp->name);
614 else {
615 json_object_string_add(json_mac, "type", "local");
616 json_object_string_add(json_mac, "intf", ifp->name);
617 }
618 if (vid) {
619 if (json_mac_hdr == NULL)
620 vty_out(vty, " %-5u", vid);
621 else
622 json_object_int_add(json_mac, "vlan", vid);
623 }
624 if (json_mac_hdr == NULL)
625 vty_out(vty, "\n");
626 else
627 json_object_object_add(json_mac_hdr, buf1, json_mac);
628 wctx->count++;
629 } else if (CHECK_FLAG(mac->flags, ZEBRA_MAC_REMOTE)) {
630 if (wctx->flags & SHOW_REMOTE_MAC_FROM_VTEP) {
631 if (IPV4_ADDR_SAME(&mac->fwd_info.r_vtep_ip,
632 &wctx->r_vtep_ip)) {
633 if (wctx->count == 0) {
634 if (json_mac_hdr == NULL) {
635 vty_out(vty, "\nVNI %u\n\n",
636 wctx->zvni->vni);
637 vty_out(vty,
638 "%-17s %-6s %-21s %-5s\n",
639 "MAC", "Type",
640 "Intf/Remote VTEP",
641 "VLAN");
642 }
643 }
644 if (json_mac_hdr == NULL)
645 vty_out(vty, "%-17s %-6s %-21s\n", buf1,
646 "remote",
647 inet_ntoa(mac->fwd_info
648 .r_vtep_ip));
649 else {
650 json_object_string_add(json_mac, "type",
651 "remote");
652 json_object_string_add(
653 json_mac, "remoteVtep",
654 inet_ntoa(mac->fwd_info
655 .r_vtep_ip));
656 json_object_object_add(json_mac_hdr,
657 buf1, json_mac);
658 }
659 wctx->count++;
660 }
661 } else {
662 if (json_mac_hdr == NULL)
663 vty_out(vty, "%-17s %-6s %-21s\n", buf1,
664 "remote",
665 inet_ntoa(mac->fwd_info.r_vtep_ip));
666 else {
667 json_object_string_add(json_mac, "type",
668 "remote");
669 json_object_string_add(
670 json_mac, "remoteVtep",
671 inet_ntoa(mac->fwd_info.r_vtep_ip));
672 json_object_object_add(json_mac_hdr, buf1,
673 json_mac);
674 }
675 wctx->count++;
676 }
677 }
678 }
679
680 /*
681 * Print MACs for all VNI.
682 */
683 static void zvni_print_mac_hash_all_vni(struct hash_backet *backet, void *ctxt)
684 {
685 struct vty *vty;
686 json_object *json = NULL, *json_vni = NULL;
687 json_object *json_mac = NULL;
688 zebra_vni_t *zvni;
689 u_int32_t num_macs;
690 struct mac_walk_ctx *wctx = ctxt;
691 char vni_str[VNI_STR_LEN];
692
693 vty = (struct vty *)wctx->vty;
694 json = (struct json_object *)wctx->json;
695
696 zvni = (zebra_vni_t *)backet->data;
697 if (!zvni) {
698 if (json)
699 vty_out(vty, "{}\n");
700 return;
701 }
702 wctx->zvni = zvni;
703
704 /*We are iterating over a new VNI, set the count to 0*/
705 wctx->count = 0;
706
707 num_macs = num_valid_macs(zvni);
708 if (!num_macs)
709 return;
710
711 if (json) {
712 json_vni = json_object_new_object();
713 json_mac = json_object_new_object();
714 snprintf(vni_str, VNI_STR_LEN, "%u", zvni->vni);
715 }
716
717 if (!CHECK_FLAG(wctx->flags, SHOW_REMOTE_MAC_FROM_VTEP)) {
718 if (json == NULL) {
719 vty_out(vty, "\nVNI %u #MACs (local and remote) %u\n\n",
720 zvni->vni, num_macs);
721 vty_out(vty, "%-17s %-6s %-21s %-5s\n", "MAC", "Type",
722 "Intf/Remote VTEP", "VLAN");
723 } else
724 json_object_int_add(json_vni, "numMacs", num_macs);
725 }
726 /* assign per-vni to wctx->json object to fill macs
727 * under the vni. Re-assign primary json object to fill
728 * next vni information.
729 */
730 wctx->json = json_mac;
731 hash_iterate(zvni->mac_table, zvni_print_mac_hash, wctx);
732 wctx->json = json;
733 if (json) {
734 if (wctx->count)
735 json_object_object_add(json_vni, "macs", json_mac);
736 json_object_object_add(json, vni_str, json_vni);
737 }
738 }
739
740 static void zl3vni_print_nh_hash(struct hash_backet *backet,
741 void *ctx)
742 {
743 struct nh_walk_ctx *wctx = NULL;
744 struct vty *vty = NULL;
745 struct json_object *json_vni = NULL;
746 struct json_object *json_nh = NULL;
747 zebra_neigh_t *n = NULL;
748 char buf1[ETHER_ADDR_STRLEN];
749 char buf2[INET6_ADDRSTRLEN];
750
751 wctx = (struct nh_walk_ctx *)ctx;
752 vty = wctx->vty;
753 json_vni = wctx->json;
754 if (json_vni)
755 json_nh = json_object_new_object();
756 n = (zebra_neigh_t *)backet->data;
757 if (!n)
758 return;
759
760 if (!json_vni) {
761 vty_out(vty, "%-15s %-17s\n",
762 ipaddr2str(&(n->ip), buf2, sizeof(buf2)),
763 prefix_mac2str(&n->emac, buf1, sizeof(buf1)));
764 } else {
765 json_object_string_add(json_nh, "nexthopIp",
766 ipaddr2str(&n->ip, buf2, sizeof(buf2)));
767 json_object_string_add(json_nh, "routerMac",
768 prefix_mac2str(&n->emac, buf1,
769 sizeof(buf1)));
770 json_object_object_add(json_vni,
771 ipaddr2str(&(n->ip), buf2, sizeof(buf2)),
772 json_nh);
773 }
774 }
775
776 static void zl3vni_print_nh_hash_all_vni(struct hash_backet *backet,
777 void **args)
778 {
779 struct vty *vty = NULL;
780 json_object *json = NULL;
781 json_object *json_vni = NULL;
782 zebra_l3vni_t *zl3vni = NULL;
783 uint32_t num_nh = 0;
784 struct nh_walk_ctx wctx;
785 char vni_str[VNI_STR_LEN];
786
787 vty = (struct vty *)args[0];
788 json = (struct json_object *)args[1];
789
790 zl3vni = (zebra_l3vni_t *)backet->data;
791 if (!zl3vni) {
792 if (json)
793 vty_out(vty, "{}\n");
794 return;
795 }
796
797 num_nh = hashcount(zl3vni->nh_table);
798 if (!num_nh)
799 return;
800
801 if (json) {
802 json_vni = json_object_new_object();
803 snprintf(vni_str, VNI_STR_LEN, "%u", zl3vni->vni);
804 }
805
806 if (json == NULL) {
807 vty_out(vty, "\nVNI %u #Next-Hops %u\n\n",
808 zl3vni->vni, num_nh);
809 vty_out(vty, "%-15s %-17s\n", "IP", "RMAC");
810 } else
811 json_object_int_add(json_vni, "numNextHops", num_nh);
812
813 memset(&wctx, 0, sizeof(struct nh_walk_ctx));
814 wctx.vty = vty;
815 wctx.json = json_vni;
816 hash_iterate(zl3vni->nh_table, zl3vni_print_nh_hash, &wctx);
817 if (json)
818 json_object_object_add(json, vni_str, json_vni);
819 }
820
821 static void zl3vni_print_rmac_hash_all_vni(struct hash_backet *backet,
822 void **args)
823 {
824 struct vty *vty = NULL;
825 json_object *json = NULL;
826 json_object *json_vni = NULL;
827 zebra_l3vni_t *zl3vni = NULL;
828 u_int32_t num_rmacs;
829 struct rmac_walk_ctx wctx;
830 char vni_str[VNI_STR_LEN];
831
832 vty = (struct vty *)args[0];
833 json = (struct json_object *)args[1];
834
835 zl3vni = (zebra_l3vni_t *)backet->data;
836 if (!zl3vni) {
837 if (json)
838 vty_out(vty, "{}\n");
839 return;
840 }
841
842 num_rmacs = hashcount(zl3vni->rmac_table);
843 if (!num_rmacs)
844 return;
845
846 if (json) {
847 json_vni = json_object_new_object();
848 snprintf(vni_str, VNI_STR_LEN, "%u", zl3vni->vni);
849 }
850
851 if (json == NULL) {
852 vty_out(vty, "\nVNI %u #RMACs %u\n\n",
853 zl3vni->vni, num_rmacs);
854 vty_out(vty, "%-17s %-21s\n", "RMAC", "Remote VTEP");
855 } else
856 json_object_int_add(json_vni, "numRmacs", num_rmacs);
857
858 /* assign per-vni to wctx->json object to fill macs
859 * under the vni. Re-assign primary json object to fill
860 * next vni information.
861 */
862 memset(&wctx, 0, sizeof(struct rmac_walk_ctx));
863 wctx.vty = vty;
864 wctx.json = json_vni;
865 hash_iterate(zl3vni->rmac_table, zl3vni_print_rmac_hash, &wctx);
866 if (json)
867 json_object_object_add(json, vni_str, json_vni);
868 }
869
870 static void zl3vni_print_rmac_hash(struct hash_backet *backet,
871 void *ctx)
872 {
873 zebra_mac_t *zrmac = NULL;
874 struct rmac_walk_ctx *wctx = NULL;
875 struct vty *vty = NULL;
876 struct json_object *json = NULL;
877 struct json_object *json_rmac = NULL;
878 char buf[ETHER_ADDR_STRLEN];
879
880 wctx = (struct rmac_walk_ctx *)ctx;
881 vty = wctx->vty;
882 json = wctx->json;
883 if (json)
884 json_rmac = json_object_new_object();
885 zrmac = (zebra_mac_t *)backet->data;
886 if (!zrmac)
887 return;
888
889 if (!json) {
890 vty_out(vty, "%-17s %-21s\n",
891 prefix_mac2str(&zrmac->macaddr, buf, sizeof(buf)),
892 inet_ntoa(zrmac->fwd_info.r_vtep_ip));
893 } else {
894 json_object_string_add(json_rmac, "routerMac",
895 prefix_mac2str(&zrmac->macaddr, buf,
896 sizeof(buf)));
897 json_object_string_add(json_rmac, "vtepIp",
898 inet_ntoa(zrmac->fwd_info.r_vtep_ip));
899 json_object_object_add(json,
900 prefix_mac2str(&zrmac->macaddr, buf,
901 sizeof(buf)),
902 json_rmac);
903 }
904 }
905
906 /* print a specific L3 VNI entry */
907 static void zl3vni_print(zebra_l3vni_t *zl3vni, void **ctx)
908 {
909 char buf[ETHER_ADDR_STRLEN];
910 struct vty *vty = NULL;
911 json_object *json = NULL;
912 zebra_vni_t *zvni = NULL;
913 json_object *json_vni_list = NULL;
914 struct listnode *node = NULL, *nnode = NULL;
915
916 vty = ctx[0];
917 json = ctx[1];
918
919 if (!json) {
920 vty_out(vty, "VNI: %u\n", zl3vni->vni);
921 vty_out(vty, " Type: %s\n", "L3");
922 vty_out(vty, " Tenant VRF: %s\n",
923 zl3vni_vrf_name(zl3vni));
924 vty_out(vty, " Local Vtep Ip: %s\n",
925 inet_ntoa(zl3vni->local_vtep_ip));
926 vty_out(vty, " Vxlan-Intf: %s\n",
927 zl3vni_vxlan_if_name(zl3vni));
928 vty_out(vty, " SVI-If: %s\n",
929 zl3vni_svi_if_name(zl3vni));
930 vty_out(vty, " State: %s\n",
931 zl3vni_state2str(zl3vni));
932 vty_out(vty, " Router MAC: %s\n",
933 zl3vni_rmac2str(zl3vni, buf, sizeof(buf)));
934 vty_out(vty, " L2 VNIs: ");
935 for (ALL_LIST_ELEMENTS(zl3vni->l2vnis, node, nnode, zvni))
936 vty_out(vty, "%u ", zvni->vni);
937 vty_out(vty, "\n");
938 } else {
939 json_vni_list = json_object_new_array();
940 json_object_int_add(json, "vni", zl3vni->vni);
941 json_object_string_add(json, "type", "L3");
942 json_object_string_add(json, "localVtepIp",
943 inet_ntoa(zl3vni->local_vtep_ip));
944 json_object_string_add(json, "vxlanIntf",
945 zl3vni_vxlan_if_name(zl3vni));
946 json_object_string_add(json, "sviIntf",
947 zl3vni_svi_if_name(zl3vni));
948 json_object_string_add(json, "state",
949 zl3vni_state2str(zl3vni));
950 json_object_string_add(json, "vrf",
951 zl3vni_vrf_name(zl3vni));
952 json_object_string_add(json, "routerMac",
953 zl3vni_rmac2str(zl3vni, buf,
954 sizeof(buf)));
955 for (ALL_LIST_ELEMENTS(zl3vni->l2vnis, node, nnode, zvni)) {
956 json_object_array_add(json_vni_list,
957 json_object_new_int(zvni->vni));
958 }
959 json_object_object_add(json, "l2Vnis", json_vni_list);
960 }
961 }
962
963 /*
964 * Print a specific VNI entry.
965 */
966 static void zvni_print(zebra_vni_t *zvni, void **ctxt)
967 {
968 struct vty *vty;
969 zebra_vtep_t *zvtep;
970 u_int32_t num_macs;
971 u_int32_t num_neigh;
972 json_object *json = NULL;
973 json_object *json_vtep_list = NULL;
974 json_object *json_ip_str = NULL;
975
976 vty = ctxt[0];
977 json = ctxt[1];
978
979 if (json == NULL) {
980 vty_out(vty, "VNI: %u\n", zvni->vni);
981 vty_out(vty, " Type: %s\n", "L2");
982 vty_out(vty, " Tenant VRF: %s\n", vrf_id_to_name(zvni->vrf_id));
983 } else {
984 json_object_int_add(json, "vni", zvni->vni);
985 json_object_string_add(json, "type", "L2");
986 json_object_string_add(json, "vrf",
987 vrf_id_to_name(zvni->vrf_id));
988 }
989
990 if (!zvni->vxlan_if) { // unexpected
991 if (json == NULL)
992 vty_out(vty, " VxLAN interface: unknown\n");
993 return;
994 }
995 num_macs = num_valid_macs(zvni);
996 num_neigh = hashcount(zvni->neigh_table);
997 if (json == NULL) {
998 vty_out(vty, " VxLAN interface: %s\n",
999 zvni->vxlan_if->name);
1000 vty_out(vty, " VxLAN ifIndex: %u\n", zvni->vxlan_if->ifindex);
1001 vty_out(vty," Local VTEP IP: %s\n",
1002 inet_ntoa(zvni->local_vtep_ip));
1003 } else {
1004 json_object_string_add(json, "vxlanInterface",
1005 zvni->vxlan_if->name);
1006 json_object_int_add(json, "ifindex", zvni->vxlan_if->ifindex);
1007 json_object_string_add(json, "vtepIp",
1008 inet_ntoa(zvni->local_vtep_ip));
1009 json_object_string_add(json, "advertiseGatewayMacip",
1010 zvni->advertise_gw_macip ? "Yes" : "No");
1011 json_object_int_add(json, "numMacs", num_macs);
1012 json_object_int_add(json, "numArpNd", num_neigh);
1013 }
1014 if (!zvni->vteps) {
1015 if (json == NULL)
1016 vty_out(vty, " No remote VTEPs known for this VNI\n");
1017 } else {
1018 if (json == NULL)
1019 vty_out(vty, " Remote VTEPs for this VNI:\n");
1020 else
1021 json_vtep_list = json_object_new_array();
1022 for (zvtep = zvni->vteps; zvtep; zvtep = zvtep->next) {
1023 if (json == NULL)
1024 vty_out(vty, " %s\n",
1025 inet_ntoa(zvtep->vtep_ip));
1026 else {
1027 json_ip_str = json_object_new_string(
1028 inet_ntoa(zvtep->vtep_ip));
1029 json_object_array_add(json_vtep_list,
1030 json_ip_str);
1031 }
1032 }
1033 if (json)
1034 json_object_object_add(json, "numRemoteVteps",
1035 json_vtep_list);
1036 }
1037 if (json == NULL) {
1038 vty_out(vty,
1039 " Number of MACs (local and remote) known for this VNI: %u\n",
1040 num_macs);
1041 vty_out(vty,
1042 " Number of ARPs (IPv4 and IPv6, local and remote) "
1043 "known for this VNI: %u\n",
1044 num_neigh);
1045 vty_out(vty, " Advertise-gw-macip: %s\n",
1046 zvni->advertise_gw_macip ? "Yes" : "No");
1047 }
1048 }
1049
1050 /* print a L3 VNI hash entry */
1051 static void zl3vni_print_hash(struct hash_backet *backet,
1052 void *ctx[])
1053 {
1054 struct vty *vty = NULL;
1055 json_object *json = NULL;
1056 json_object *json_vni = NULL;
1057 zebra_l3vni_t *zl3vni = NULL;
1058
1059 vty = (struct vty *)ctx[0];
1060 json = (json_object *)ctx[1];
1061
1062 zl3vni = (zebra_l3vni_t *)backet->data;
1063 if (!zl3vni)
1064 return;
1065
1066 if (!json) {
1067 vty_out(vty,
1068 "%-10u %-4s %-21s %-8lu %-8lu %-15s %-37s\n",
1069 zl3vni->vni, "L3",
1070 zl3vni_vxlan_if_name(zl3vni),
1071 hashcount(zl3vni->rmac_table),
1072 hashcount(zl3vni->nh_table),
1073 "n/a",
1074 zl3vni_vrf_name(zl3vni));
1075 } else {
1076 char vni_str[VNI_STR_LEN];
1077
1078 snprintf(vni_str, VNI_STR_LEN, "%u", zl3vni->vni);
1079 json_vni = json_object_new_object();
1080 json_object_int_add(json_vni, "vni", zl3vni->vni);
1081 json_object_string_add(json_vni, "vxlanIf",
1082 zl3vni_vxlan_if_name(zl3vni));
1083 json_object_int_add(json_vni, "numMacs",
1084 hashcount(zl3vni->rmac_table));
1085 json_object_int_add(json_vni, "numArpNd",
1086 hashcount(zl3vni->nh_table));
1087 json_object_string_add(json_vni, "numRemoteVteps", "n/a");
1088 json_object_string_add(json_vni, "type", "L3");
1089 json_object_string_add(json_vni, "tenantVrf",
1090 zl3vni_vrf_name(zl3vni));
1091 json_object_object_add(json, vni_str, json_vni);
1092 }
1093
1094 }
1095
1096 /*
1097 * Print a VNI hash entry - called for display of all VNIs.
1098 */
1099 static void zvni_print_hash(struct hash_backet *backet, void *ctxt[])
1100 {
1101 struct vty *vty;
1102 zebra_vni_t *zvni;
1103 zebra_vtep_t *zvtep;
1104 u_int32_t num_vteps = 0;
1105 u_int32_t num_macs = 0;
1106 u_int32_t num_neigh = 0;
1107 json_object *json = NULL;
1108 json_object *json_vni = NULL;
1109 json_object *json_ip_str = NULL;
1110 json_object *json_vtep_list = NULL;
1111
1112 vty = ctxt[0];
1113 json = ctxt[1];
1114
1115 zvni = (zebra_vni_t *)backet->data;
1116 if (!zvni)
1117 return;
1118
1119 zvtep = zvni->vteps;
1120 while (zvtep) {
1121 num_vteps++;
1122 zvtep = zvtep->next;
1123 }
1124
1125 num_macs = num_valid_macs(zvni);
1126 num_neigh = hashcount(zvni->neigh_table);
1127 if (json == NULL)
1128 vty_out(vty,
1129 "%-10u %-4s %-21s %-8u %-8u %-15u %-37s\n",
1130 zvni->vni, "L2",
1131 zvni->vxlan_if ? zvni->vxlan_if->name : "unknown",
1132 num_macs, num_neigh, num_vteps,
1133 vrf_id_to_name(zvni->vrf_id));
1134 else {
1135 char vni_str[VNI_STR_LEN];
1136 snprintf(vni_str, VNI_STR_LEN, "%u", zvni->vni);
1137 json_vni = json_object_new_object();
1138 json_object_int_add(json_vni, "vni", zvni->vni);
1139 json_object_string_add(json_vni, "type", "L2");
1140 json_object_string_add(json_vni, "vxlanIf",
1141 zvni->vxlan_if ? zvni->vxlan_if->name
1142 : "unknown");
1143 json_object_int_add(json_vni, "numMacs", num_macs);
1144 json_object_int_add(json_vni, "numArpNd", num_neigh);
1145 json_object_int_add(json_vni, "numRemoteVteps", num_vteps);
1146 json_object_string_add(json_vni, "tenantVrf",
1147 vrf_id_to_name(zvni->vrf_id));
1148 if (num_vteps) {
1149 json_vtep_list = json_object_new_array();
1150 for (zvtep = zvni->vteps; zvtep; zvtep = zvtep->next) {
1151 json_ip_str = json_object_new_string(
1152 inet_ntoa(zvtep->vtep_ip));
1153 json_object_array_add(json_vtep_list,
1154 json_ip_str);
1155 }
1156 json_object_object_add(json_vni, "remoteVteps",
1157 json_vtep_list);
1158 }
1159 json_object_object_add(json, vni_str, json_vni);
1160 }
1161 }
1162
1163 /*
1164 * Inform BGP about local MACIP.
1165 */
1166 static int zvni_macip_send_msg_to_client(vni_t vni,
1167 struct ethaddr *macaddr,
1168 struct ipaddr *ip, u_char flags,
1169 u_int16_t cmd)
1170 {
1171 char buf[ETHER_ADDR_STRLEN];
1172 char buf2[INET6_ADDRSTRLEN];
1173 int ipa_len;
1174 struct zserv *client = NULL;
1175 struct stream *s = NULL;
1176
1177 client = zebra_find_client(ZEBRA_ROUTE_BGP, 0);
1178 /* BGP may not be running. */
1179 if (!client)
1180 return 0;
1181
1182 s = client->obuf;
1183 stream_reset(s);
1184
1185 zclient_create_header(s, cmd, VRF_DEFAULT);
1186 stream_putl(s, vni);
1187 stream_put(s, macaddr->octet, ETH_ALEN);
1188 if (ip) {
1189 ipa_len = 0;
1190 if (IS_IPADDR_V4(ip))
1191 ipa_len = IPV4_MAX_BYTELEN;
1192 else if (IS_IPADDR_V6(ip))
1193 ipa_len = IPV6_MAX_BYTELEN;
1194
1195 stream_putl(s, ipa_len); /* IP address length */
1196 if (ipa_len)
1197 stream_put(s, &ip->ip.addr, ipa_len); /* IP address */
1198 } else
1199 stream_putl(s, 0); /* Just MAC. */
1200
1201 stream_putc(s, flags); /* sticky mac/gateway mac */
1202
1203
1204 /* Write packet size. */
1205 stream_putw_at(s, 0, stream_get_endp(s));
1206
1207 if (IS_ZEBRA_DEBUG_VXLAN)
1208 zlog_debug(
1209 "Send MACIP %s flags 0x%x MAC %s IP %s L2-VNI %u to %s",
1210 (cmd == ZEBRA_MACIP_ADD) ? "Add" : "Del",
1211 flags, prefix_mac2str(macaddr, buf, sizeof(buf)),
1212 ipaddr2str(ip, buf2, sizeof(buf2)), vni,
1213 zebra_route_string(client->proto));
1214
1215 if (cmd == ZEBRA_MACIP_ADD)
1216 client->macipadd_cnt++;
1217 else
1218 client->macipdel_cnt++;
1219
1220 return zebra_server_send_message(client);
1221 }
1222
1223 /*
1224 * Make hash key for neighbors.
1225 */
1226 static unsigned int neigh_hash_keymake(void *p)
1227 {
1228 zebra_neigh_t *n = p;
1229 struct ipaddr *ip = &n->ip;
1230
1231 if (IS_IPADDR_V4(ip))
1232 return jhash_1word(ip->ipaddr_v4.s_addr, 0);
1233
1234 return jhash2(ip->ipaddr_v6.s6_addr32,
1235 ZEBRA_NUM_OF(ip->ipaddr_v6.s6_addr32), 0);
1236 }
1237
1238 /*
1239 * Compare two neighbor hash structures.
1240 */
1241 static int neigh_cmp(const void *p1, const void *p2)
1242 {
1243 const zebra_neigh_t *n1 = p1;
1244 const zebra_neigh_t *n2 = p2;
1245
1246 if (n1 == NULL && n2 == NULL)
1247 return 1;
1248
1249 if (n1 == NULL || n2 == NULL)
1250 return 0;
1251
1252 return (memcmp(&n1->ip, &n2->ip, sizeof(struct ipaddr)) == 0);
1253 }
1254
1255 /*
1256 * Callback to allocate neighbor hash entry.
1257 */
1258 static void *zvni_neigh_alloc(void *p)
1259 {
1260 const zebra_neigh_t *tmp_n = p;
1261 zebra_neigh_t *n;
1262
1263 n = XCALLOC(MTYPE_NEIGH, sizeof(zebra_neigh_t));
1264 *n = *tmp_n;
1265
1266 return ((void *)n);
1267 }
1268
1269 /*
1270 * Add neighbor entry.
1271 */
1272 static zebra_neigh_t *zvni_neigh_add(zebra_vni_t *zvni, struct ipaddr *ip,
1273 struct ethaddr *mac)
1274 {
1275 zebra_neigh_t tmp_n;
1276 zebra_neigh_t *n = NULL;
1277 zebra_mac_t *zmac = NULL;
1278
1279 memset(&tmp_n, 0, sizeof(zebra_neigh_t));
1280 memcpy(&tmp_n.ip, ip, sizeof(struct ipaddr));
1281 n = hash_get(zvni->neigh_table, &tmp_n, zvni_neigh_alloc);
1282 assert(n);
1283
1284 memcpy(&n->emac, mac, ETH_ALEN);
1285 n->state = ZEBRA_NEIGH_INACTIVE;
1286
1287 /* Associate the neigh to mac */
1288 zmac = zvni_mac_lookup(zvni, mac);
1289 if (zmac)
1290 listnode_add_sort(zmac->neigh_list, n);
1291
1292 return n;
1293 }
1294
1295 /*
1296 * Delete neighbor entry.
1297 */
1298 static int zvni_neigh_del(zebra_vni_t *zvni, zebra_neigh_t *n)
1299 {
1300 zebra_neigh_t *tmp_n;
1301 zebra_mac_t *zmac = NULL;
1302
1303 zmac = zvni_mac_lookup(zvni, &n->emac);
1304 if (zmac)
1305 listnode_delete(zmac->neigh_list, n);
1306
1307 /* Free the VNI hash entry and allocated memory. */
1308 tmp_n = hash_release(zvni->neigh_table, n);
1309 if (tmp_n)
1310 XFREE(MTYPE_NEIGH, tmp_n);
1311
1312 return 0;
1313 }
1314
1315 /*
1316 * Free neighbor hash entry (callback)
1317 */
1318 static int zvni_neigh_del_hash_entry(struct hash_backet *backet, void *arg)
1319 {
1320 struct neigh_walk_ctx *wctx = arg;
1321 zebra_neigh_t *n = backet->data;
1322
1323 if (((wctx->flags & DEL_LOCAL_NEIGH) && (n->flags & ZEBRA_NEIGH_LOCAL))
1324 || ((wctx->flags & DEL_REMOTE_NEIGH)
1325 && (n->flags & ZEBRA_NEIGH_REMOTE))
1326 || ((wctx->flags & DEL_REMOTE_NEIGH_FROM_VTEP)
1327 && (n->flags & ZEBRA_NEIGH_REMOTE)
1328 && IPV4_ADDR_SAME(&n->r_vtep_ip, &wctx->r_vtep_ip))) {
1329 if (wctx->upd_client && (n->flags & ZEBRA_NEIGH_LOCAL))
1330 zvni_neigh_send_del_to_client(wctx->zvni->vni, &n->ip,
1331 &n->emac, 0);
1332
1333 if (wctx->uninstall)
1334 zvni_neigh_uninstall(wctx->zvni, n);
1335
1336 return zvni_neigh_del(wctx->zvni, n);
1337 }
1338
1339 return 0;
1340 }
1341
1342 /*
1343 * Delete all neighbor entries from specific VTEP for a particular VNI.
1344 */
1345 static void zvni_neigh_del_from_vtep(zebra_vni_t *zvni, int uninstall,
1346 struct in_addr *r_vtep_ip)
1347 {
1348 struct neigh_walk_ctx wctx;
1349
1350 if (!zvni->neigh_table)
1351 return;
1352
1353 memset(&wctx, 0, sizeof(struct neigh_walk_ctx));
1354 wctx.zvni = zvni;
1355 wctx.uninstall = uninstall;
1356 wctx.flags = DEL_REMOTE_NEIGH_FROM_VTEP;
1357 wctx.r_vtep_ip = *r_vtep_ip;
1358
1359 hash_iterate(zvni->neigh_table,
1360 (void (*)(struct hash_backet *,
1361 void *))zvni_neigh_del_hash_entry,
1362 &wctx);
1363 }
1364
1365 /*
1366 * Delete all neighbor entries for this VNI.
1367 */
1368 static void zvni_neigh_del_all(zebra_vni_t *zvni,
1369 int uninstall, int upd_client, u_int32_t flags)
1370 {
1371 struct neigh_walk_ctx wctx;
1372
1373 if (!zvni->neigh_table)
1374 return;
1375
1376 memset(&wctx, 0, sizeof(struct neigh_walk_ctx));
1377 wctx.zvni = zvni;
1378 wctx.uninstall = uninstall;
1379 wctx.upd_client = upd_client;
1380 wctx.flags = flags;
1381
1382 hash_iterate(zvni->neigh_table,
1383 (void (*)(struct hash_backet *,
1384 void *))zvni_neigh_del_hash_entry,
1385 &wctx);
1386 }
1387
1388 /*
1389 * Look up neighbor hash entry.
1390 */
1391 static zebra_neigh_t *zvni_neigh_lookup(zebra_vni_t *zvni, struct ipaddr *ip)
1392 {
1393 zebra_neigh_t tmp;
1394 zebra_neigh_t *n;
1395
1396 memset(&tmp, 0, sizeof(tmp));
1397 memcpy(&tmp.ip, ip, sizeof(struct ipaddr));
1398 n = hash_lookup(zvni->neigh_table, &tmp);
1399
1400 return n;
1401 }
1402
1403 /* Process all neigh associated to a mac upon local mac add event */
1404 static void zvni_process_neigh_on_local_mac_add(zebra_vni_t *zvni,
1405 zebra_mac_t *zmac)
1406 {
1407 zebra_neigh_t *n = NULL;
1408 struct listnode *node = NULL;
1409 char buf[ETHER_ADDR_STRLEN];
1410 char buf2[INET6_ADDRSTRLEN];
1411
1412 for (ALL_LIST_ELEMENTS_RO(zmac->neigh_list, node, n)) {
1413 if (CHECK_FLAG(n->flags, ZEBRA_NEIGH_LOCAL)) {
1414 /* MAC is learnt locally, program all inactive neigh
1415 * pointing to this mac */
1416 if (IS_ZEBRA_NEIGH_INACTIVE(n)) {
1417 if (IS_ZEBRA_DEBUG_VXLAN)
1418 zlog_debug(
1419 "neigh %s (MAC %s) on L2-VNI %u is now ACTIVE",
1420 ipaddr2str(&n->ip, buf2,
1421 sizeof(buf2)),
1422 prefix_mac2str(&n->emac, buf,
1423 sizeof(buf)),
1424 zvni->vni);
1425
1426 ZEBRA_NEIGH_SET_ACTIVE(n);
1427 zvni_neigh_send_add_to_client(
1428 zvni->vni, &n->ip, &n->emac, n->flags);
1429 } else {
1430 if (IS_ZEBRA_DEBUG_VXLAN)
1431 zlog_debug(
1432 "neigh %s (MAC %s) on VNI %u should NOT be ACTIVE",
1433 ipaddr2str(&n->ip, buf2,
1434 sizeof(buf2)),
1435 prefix_mac2str(&n->emac, buf,
1436 sizeof(buf)),
1437 zvni->vni);
1438 }
1439 } else if (CHECK_FLAG(n->flags, ZEBRA_NEIGH_REMOTE)) {
1440 /* TODO: assume the neigh has moved too ?? */
1441 }
1442 }
1443 }
1444
1445 /* Process all neigh associated to a mac upon local mac del event */
1446 static void zvni_process_neigh_on_local_mac_del(zebra_vni_t *zvni,
1447 zebra_mac_t *zmac)
1448 {
1449 zebra_neigh_t *n = NULL;
1450 struct listnode *node = NULL;
1451 char buf[ETHER_ADDR_STRLEN];
1452 char buf2[INET6_ADDRSTRLEN];
1453
1454 for (ALL_LIST_ELEMENTS_RO(zmac->neigh_list, node, n)) {
1455 if (CHECK_FLAG(n->flags, ZEBRA_NEIGH_LOCAL)) {
1456 if (IS_ZEBRA_NEIGH_ACTIVE(n)) {
1457 if (IS_ZEBRA_DEBUG_VXLAN)
1458 zlog_debug(
1459 "neigh %s (MAC %s) on L2-VNI %u is now INACTIVE",
1460 ipaddr2str(&n->ip, buf2,
1461 sizeof(buf2)),
1462 prefix_mac2str(&n->emac, buf,
1463 sizeof(buf)),
1464 zvni->vni);
1465
1466 ZEBRA_NEIGH_SET_INACTIVE(n);
1467 zvni_neigh_send_del_to_client(
1468 zvni->vni, &n->ip, &n->emac, 0);
1469 }
1470 } else if (CHECK_FLAG(n->flags, ZEBRA_NEIGH_REMOTE)) {
1471 if (IS_ZEBRA_DEBUG_VXLAN)
1472 zlog_err(
1473 "local MAC %s getting deleted on VNI %u has remote neigh %s",
1474 prefix_mac2str(&n->emac, buf,
1475 sizeof(buf)),
1476 zvni->vni,
1477 ipaddr2str(&n->ip, buf2, sizeof(buf2)));
1478 }
1479 }
1480 }
1481
1482 /* process all neigh associated to a mac entry upon remote mac add */
1483 static void zvni_process_neigh_on_remote_mac_add(zebra_vni_t *zvni,
1484 zebra_mac_t *zmac)
1485 {
1486 zebra_neigh_t *n = NULL;
1487 struct listnode *node = NULL;
1488 char buf[ETHER_ADDR_STRLEN];
1489 char buf2[INET6_ADDRSTRLEN];
1490
1491 for (ALL_LIST_ELEMENTS_RO(zmac->neigh_list, node, n)) {
1492 if (CHECK_FLAG(n->flags, ZEBRA_NEIGH_LOCAL)) {
1493 if (IS_ZEBRA_NEIGH_ACTIVE(n)) {
1494 if (IS_ZEBRA_DEBUG_VXLAN)
1495 zlog_debug(
1496 "neigh %s (MAC %s) on L2-VNI %u is now INACTIVE",
1497 ipaddr2str(&n->ip, buf2,
1498 sizeof(buf2)),
1499 prefix_mac2str(&n->emac, buf,
1500 sizeof(buf)),
1501 zvni->vni);
1502
1503 ZEBRA_NEIGH_SET_INACTIVE(n);
1504 zvni_neigh_send_del_to_client(
1505 zvni->vni, &n->ip, &n->emac, 0);
1506 }
1507 }
1508 }
1509 }
1510
1511 /* process all neigh associated to mac entry upon remote mac del */
1512 static void zvni_process_neigh_on_remote_mac_del(zebra_vni_t *zvni,
1513 zebra_mac_t *zmac)
1514 {
1515 zebra_neigh_t *n = NULL;
1516 struct listnode *node = NULL;
1517 char buf[ETHER_ADDR_STRLEN];
1518 char buf2[INET6_ADDRSTRLEN];
1519
1520 for (ALL_LIST_ELEMENTS_RO(zmac->neigh_list, node, n)) {
1521 if (CHECK_FLAG(n->flags, ZEBRA_NEIGH_LOCAL)) {
1522 if (IS_ZEBRA_DEBUG_VXLAN)
1523 zlog_err(
1524 "remote MAC %s getting deleted on VNI %u has local neigh %s",
1525 prefix_mac2str(&n->emac, buf,
1526 sizeof(buf)),
1527 zvni->vni,
1528 ipaddr2str(&n->ip, buf2, sizeof(buf2)));
1529 }
1530 }
1531 }
1532
1533 /*
1534 * Inform BGP about local neighbor addition.
1535 */
1536 static int zvni_neigh_send_add_to_client(vni_t vni,
1537 struct ipaddr *ip,
1538 struct ethaddr *macaddr,
1539 u_char neigh_flags)
1540 {
1541 u_char flags = 0;
1542
1543 if (CHECK_FLAG(neigh_flags, ZEBRA_NEIGH_DEF_GW))
1544 SET_FLAG(flags, ZEBRA_MACIP_TYPE_GW);
1545
1546 return zvni_macip_send_msg_to_client(vni, macaddr, ip, flags,
1547 ZEBRA_MACIP_ADD);
1548 }
1549
1550 /*
1551 * Inform BGP about local neighbor deletion.
1552 */
1553 static int zvni_neigh_send_del_to_client(vni_t vni,
1554 struct ipaddr *ip,
1555 struct ethaddr *macaddr, u_char flags)
1556 {
1557 return zvni_macip_send_msg_to_client(vni, macaddr, ip, flags,
1558 ZEBRA_MACIP_DEL);
1559 }
1560
1561 /*
1562 * Install remote neighbor into the kernel.
1563 */
1564 static int zvni_neigh_install(zebra_vni_t *zvni, zebra_neigh_t *n)
1565 {
1566 struct zebra_if *zif;
1567 struct zebra_l2info_vxlan *vxl;
1568 struct interface *vlan_if;
1569
1570 if (!(n->flags & ZEBRA_NEIGH_REMOTE))
1571 return 0;
1572
1573 zif = zvni->vxlan_if->info;
1574 if (!zif)
1575 return -1;
1576 vxl = &zif->l2info.vxl;
1577
1578 vlan_if = zvni_map_to_svi(vxl->access_vlan, zif->brslave_info.br_if);
1579 if (!vlan_if)
1580 return -1;
1581
1582 return kernel_add_neigh(vlan_if, &n->ip, &n->emac);
1583 }
1584
1585 /*
1586 * Uninstall remote neighbor from the kernel.
1587 */
1588 static int zvni_neigh_uninstall(zebra_vni_t *zvni, zebra_neigh_t *n)
1589 {
1590 struct zebra_if *zif;
1591 struct zebra_l2info_vxlan *vxl;
1592 struct interface *vlan_if;
1593
1594 if (!(n->flags & ZEBRA_NEIGH_REMOTE))
1595 return 0;
1596
1597 if (!zvni->vxlan_if) {
1598 zlog_err("VNI %u hash %p couldn't be uninstalled - no intf",
1599 zvni->vni, zvni);
1600 return -1;
1601 }
1602
1603 zif = zvni->vxlan_if->info;
1604 if (!zif)
1605 return -1;
1606 vxl = &zif->l2info.vxl;
1607 vlan_if = zvni_map_to_svi(vxl->access_vlan, zif->brslave_info.br_if);
1608 if (!vlan_if)
1609 return -1;
1610
1611 return kernel_del_neigh(vlan_if, &n->ip);
1612 }
1613
1614 /*
1615 * Install neighbor hash entry - called upon access VLAN change.
1616 */
1617 static void zvni_install_neigh_hash(struct hash_backet *backet, void *ctxt)
1618 {
1619 zebra_neigh_t *n;
1620 struct neigh_walk_ctx *wctx = ctxt;
1621
1622 n = (zebra_neigh_t *)backet->data;
1623 if (!n)
1624 return;
1625
1626 if (CHECK_FLAG(n->flags, ZEBRA_NEIGH_REMOTE))
1627 zvni_neigh_install(wctx->zvni, n);
1628 }
1629
1630 /* Get the VRR interface for SVI if any */
1631 struct interface *zebra_get_vrr_intf_for_svi(struct interface *ifp)
1632 {
1633 struct zebra_vrf *zvrf = NULL;
1634 struct interface *tmp_if = NULL;
1635 struct zebra_if *zif = NULL;
1636
1637 zvrf = vrf_info_lookup(ifp->vrf_id);
1638 assert(zvrf);
1639
1640 FOR_ALL_INTERFACES (zvrf->vrf, tmp_if) {
1641 zif = tmp_if->info;
1642 if (!zif)
1643 continue;
1644
1645 if (!IS_ZEBRA_IF_MACVLAN(tmp_if))
1646 continue;
1647
1648 if (zif->link == ifp)
1649 return tmp_if;
1650 }
1651
1652 return NULL;
1653 }
1654
1655 static int zvni_del_macip_for_intf(struct interface *ifp, zebra_vni_t *zvni)
1656 {
1657 struct listnode *cnode = NULL, *cnnode = NULL;
1658 struct connected *c = NULL;
1659 struct ethaddr macaddr;
1660
1661 memcpy(&macaddr.octet, ifp->hw_addr, ETH_ALEN);
1662
1663 for (ALL_LIST_ELEMENTS(ifp->connected, cnode, cnnode, c)) {
1664 struct ipaddr ip;
1665
1666 memset(&ip, 0, sizeof(struct ipaddr));
1667 if (!CHECK_FLAG(c->conf, ZEBRA_IFC_REAL))
1668 continue;
1669
1670 if (c->address->family == AF_INET) {
1671 ip.ipa_type = IPADDR_V4;
1672 memcpy(&(ip.ipaddr_v4), &(c->address->u.prefix4),
1673 sizeof(struct in_addr));
1674 } else if (c->address->family == AF_INET6) {
1675 ip.ipa_type = IPADDR_V6;
1676 memcpy(&(ip.ipaddr_v6), &(c->address->u.prefix6),
1677 sizeof(struct in6_addr));
1678 } else {
1679 continue;
1680 }
1681
1682 zvni_gw_macip_del(ifp, zvni, &ip);
1683 }
1684
1685 return 0;
1686 }
1687
1688 static int zvni_add_macip_for_intf(struct interface *ifp, zebra_vni_t *zvni)
1689 {
1690 struct listnode *cnode = NULL, *cnnode = NULL;
1691 struct connected *c = NULL;
1692 struct ethaddr macaddr;
1693
1694 memcpy(&macaddr.octet, ifp->hw_addr, ETH_ALEN);
1695
1696 for (ALL_LIST_ELEMENTS(ifp->connected, cnode, cnnode, c)) {
1697 struct ipaddr ip;
1698
1699 memset(&ip, 0, sizeof(struct ipaddr));
1700 if (!CHECK_FLAG(c->conf, ZEBRA_IFC_REAL))
1701 continue;
1702
1703 if (c->address->family == AF_INET) {
1704 ip.ipa_type = IPADDR_V4;
1705 memcpy(&(ip.ipaddr_v4), &(c->address->u.prefix4),
1706 sizeof(struct in_addr));
1707 } else if (c->address->family == AF_INET6) {
1708 ip.ipa_type = IPADDR_V6;
1709 memcpy(&(ip.ipaddr_v6), &(c->address->u.prefix6),
1710 sizeof(struct in6_addr));
1711 } else {
1712 continue;
1713 }
1714
1715 zvni_gw_macip_add(ifp, zvni, &macaddr, &ip);
1716 }
1717 return 0;
1718 }
1719
1720
1721 static int zvni_advertise_subnet(zebra_vni_t *zvni,
1722 struct interface *ifp,
1723 int advertise)
1724 {
1725 struct listnode *cnode = NULL, *cnnode = NULL;
1726 struct connected *c = NULL;
1727 struct ethaddr macaddr;
1728
1729 memcpy(&macaddr.octet, ifp->hw_addr, ETH_ALEN);
1730
1731 for (ALL_LIST_ELEMENTS(ifp->connected, cnode, cnnode, c)) {
1732 struct prefix p;
1733
1734 memcpy(&p, c->address, sizeof(struct prefix));
1735
1736 /* skip link local address */
1737 if (IN6_IS_ADDR_LINKLOCAL(&p.u.prefix6))
1738 continue;
1739
1740 apply_mask(&p);
1741 if (advertise)
1742 ip_prefix_send_to_client(ifp->vrf_id, &p,
1743 ZEBRA_IP_PREFIX_ROUTE_ADD);
1744 else
1745 ip_prefix_send_to_client(ifp->vrf_id, &p,
1746 ZEBRA_IP_PREFIX_ROUTE_DEL);
1747 }
1748 return 0;
1749 }
1750
1751 /*
1752 * zvni_gw_macip_add_to_client
1753 */
1754 static int zvni_gw_macip_add(struct interface *ifp, zebra_vni_t *zvni,
1755 struct ethaddr *macaddr, struct ipaddr *ip)
1756 {
1757 char buf[ETHER_ADDR_STRLEN];
1758 char buf2[INET6_ADDRSTRLEN];
1759 zebra_neigh_t *n = NULL;
1760 zebra_mac_t *mac = NULL;
1761 struct zebra_if *zif = NULL;
1762 struct zebra_l2info_vxlan *vxl = NULL;
1763
1764 zif = zvni->vxlan_if->info;
1765 if (!zif)
1766 return -1;
1767
1768 vxl = &zif->l2info.vxl;
1769
1770 mac = zvni_mac_lookup(zvni, macaddr);
1771 if (!mac) {
1772 mac = zvni_mac_add(zvni, macaddr);
1773 if (!mac) {
1774 zlog_err("Failed to add MAC %s intf %s(%u) VID %u",
1775 prefix_mac2str(macaddr, buf, sizeof(buf)),
1776 ifp->name, ifp->ifindex, vxl->access_vlan);
1777 return -1;
1778 }
1779 }
1780
1781 /* Set "local" forwarding info. */
1782 SET_FLAG(mac->flags, ZEBRA_MAC_LOCAL);
1783 SET_FLAG(mac->flags, ZEBRA_MAC_AUTO);
1784 SET_FLAG(mac->flags, ZEBRA_MAC_DEF_GW);
1785 memset(&mac->fwd_info, 0, sizeof(mac->fwd_info));
1786 mac->fwd_info.local.ifindex = ifp->ifindex;
1787 mac->fwd_info.local.vid = vxl->access_vlan;
1788
1789 n = zvni_neigh_lookup(zvni, ip);
1790 if (!n) {
1791 n = zvni_neigh_add(zvni, ip, macaddr);
1792 if (!n) {
1793 zlog_err(
1794 "Failed to add neighbor %s MAC %s intf %s(%u) -> VNI %u",
1795 ipaddr2str(ip, buf2, sizeof(buf2)),
1796 prefix_mac2str(macaddr, buf, sizeof(buf)),
1797 ifp->name, ifp->ifindex, zvni->vni);
1798 return -1;
1799 }
1800 }
1801
1802 /* Set "local" forwarding info. */
1803 SET_FLAG(n->flags, ZEBRA_NEIGH_LOCAL);
1804 SET_FLAG(n->flags, ZEBRA_NEIGH_DEF_GW);
1805 memcpy(&n->emac, macaddr, ETH_ALEN);
1806 n->ifindex = ifp->ifindex;
1807
1808 /* Only advertise in BGP if the knob is enabled */
1809 if (!advertise_gw_macip_enabled(zvni))
1810 return 0;
1811
1812 if (IS_ZEBRA_DEBUG_VXLAN)
1813 zlog_debug(
1814 "SVI %s(%u) L2-VNI %u, sending GW MAC %s IP %s add to BGP",
1815 ifp->name, ifp->ifindex, zvni->vni,
1816 prefix_mac2str(macaddr, buf, sizeof(buf)),
1817 ipaddr2str(ip, buf2, sizeof(buf2)));
1818
1819 zvni_neigh_send_add_to_client(zvni->vni, ip, macaddr,
1820 n->flags);
1821
1822 return 0;
1823 }
1824
1825 /*
1826 * zvni_gw_macip_del_from_client
1827 */
1828 static int zvni_gw_macip_del(struct interface *ifp, zebra_vni_t *zvni,
1829 struct ipaddr *ip)
1830 {
1831 char buf1[ETHER_ADDR_STRLEN];
1832 char buf2[INET6_ADDRSTRLEN];
1833 zebra_neigh_t *n = NULL;
1834 zebra_mac_t *mac = NULL;
1835
1836 /* If the neigh entry is not present nothing to do*/
1837 n = zvni_neigh_lookup(zvni, ip);
1838 if (!n)
1839 return 0;
1840
1841 /* mac entry should be present */
1842 mac = zvni_mac_lookup(zvni, &n->emac);
1843 if (!mac) {
1844 zlog_err("MAC %s doesnt exists for neigh %s on VNI %u",
1845 prefix_mac2str(&n->emac, buf1, sizeof(buf1)),
1846 ipaddr2str(ip, buf2, sizeof(buf2)), zvni->vni);
1847 return -1;
1848 }
1849
1850 /* If the entry is not local nothing to do*/
1851 if (!CHECK_FLAG(n->flags, ZEBRA_NEIGH_LOCAL))
1852 return -1;
1853
1854 /* only need to delete the entry from bgp if we sent it before */
1855 if (advertise_gw_macip_enabled(zvni)) {
1856 if (IS_ZEBRA_DEBUG_VXLAN)
1857 zlog_debug("%u:SVI %s(%u) VNI %u, sending GW MAC %s IP %s del to BGP",
1858 ifp->vrf_id, ifp->name,
1859 ifp->ifindex, zvni->vni,
1860 prefix_mac2str(&(n->emac),
1861 NULL,
1862 ETHER_ADDR_STRLEN),
1863 ipaddr2str(ip, buf2, sizeof(buf2)));
1864
1865 /* Remove neighbor from BGP. */
1866 zvni_neigh_send_del_to_client(zvni->vni, &n->ip, &n->emac,
1867 ZEBRA_MACIP_TYPE_GW);
1868 }
1869
1870 /* Delete this neighbor entry. */
1871 zvni_neigh_del(zvni, n);
1872
1873 /* see if the mac needs to be deleted as well*/
1874 if (mac)
1875 zvni_deref_ip2mac(zvni, mac, 0);
1876
1877 return 0;
1878 }
1879
1880 static void zvni_gw_macip_del_for_vni_hash(struct hash_backet *backet,
1881 void *ctxt)
1882 {
1883 zebra_vni_t *zvni = NULL;
1884 struct zebra_if *zif = NULL;
1885 struct zebra_l2info_vxlan zl2_info;
1886 struct interface *vlan_if = NULL;
1887 struct interface *vrr_if = NULL;
1888 struct interface *ifp;
1889
1890 /* Add primary SVI MAC*/
1891 zvni = (zebra_vni_t *)backet->data;
1892 if (!zvni)
1893 return;
1894
1895 ifp = zvni->vxlan_if;
1896 if (!ifp)
1897 return;
1898 zif = ifp->info;
1899
1900 /* If down or not mapped to a bridge, we're done. */
1901 if (!if_is_operative(ifp) || !zif->brslave_info.br_if)
1902 return;
1903
1904 zl2_info = zif->l2info.vxl;
1905
1906 vlan_if = zvni_map_to_svi(zl2_info.access_vlan, zif->brslave_info.br_if);
1907 if (!vlan_if)
1908 return;
1909
1910 /* Del primary MAC-IP */
1911 zvni_del_macip_for_intf(vlan_if, zvni);
1912
1913 /* Del VRR MAC-IP - if any*/
1914 vrr_if = zebra_get_vrr_intf_for_svi(vlan_if);
1915 if (vrr_if)
1916 zvni_del_macip_for_intf(vrr_if, zvni);
1917
1918 return;
1919 }
1920
1921 static void zvni_gw_macip_add_for_vni_hash(struct hash_backet *backet,
1922 void *ctxt)
1923 {
1924 zebra_vni_t *zvni = NULL;
1925 struct zebra_if *zif = NULL;
1926 struct zebra_l2info_vxlan zl2_info;
1927 struct interface *vlan_if = NULL;
1928 struct interface *vrr_if = NULL;
1929 struct interface *ifp = NULL;
1930
1931 zvni = (zebra_vni_t *)backet->data;
1932 if (!zvni)
1933 return;
1934
1935 ifp = zvni->vxlan_if;
1936 if (!ifp)
1937 return;
1938 zif = ifp->info;
1939
1940 /* If down or not mapped to a bridge, we're done. */
1941 if (!if_is_operative(ifp) || !zif->brslave_info.br_if)
1942 return;
1943 zl2_info = zif->l2info.vxl;
1944
1945 vlan_if = zvni_map_to_svi(zl2_info.access_vlan,
1946 zif->brslave_info.br_if);
1947 if (!vlan_if)
1948 return;
1949
1950 /* Add primary SVI MAC-IP */
1951 zvni_add_macip_for_intf(vlan_if, zvni);
1952
1953 /* Add VRR MAC-IP - if any*/
1954 vrr_if = zebra_get_vrr_intf_for_svi(vlan_if);
1955 if (vrr_if)
1956 zvni_add_macip_for_intf(vrr_if, zvni);
1957
1958 return;
1959 }
1960
1961 /*
1962 * Make hash key for MAC.
1963 */
1964 static unsigned int mac_hash_keymake(void *p)
1965 {
1966 zebra_mac_t *pmac = p;
1967 const void *pnt = (void *)pmac->macaddr.octet;
1968
1969 return jhash(pnt, ETH_ALEN, 0xa5a5a55a);
1970 }
1971
1972 /*
1973 * Compare two MAC addresses.
1974 */
1975 static int mac_cmp(const void *p1, const void *p2)
1976 {
1977 const zebra_mac_t *pmac1 = p1;
1978 const zebra_mac_t *pmac2 = p2;
1979
1980 if (pmac1 == NULL && pmac2 == NULL)
1981 return 1;
1982
1983 if (pmac1 == NULL || pmac2 == NULL)
1984 return 0;
1985
1986 return (memcmp(pmac1->macaddr.octet, pmac2->macaddr.octet,
1987 ETH_ALEN)
1988 == 0);
1989 }
1990
1991 /*
1992 * Callback to allocate MAC hash entry.
1993 */
1994 static void *zvni_mac_alloc(void *p)
1995 {
1996 const zebra_mac_t *tmp_mac = p;
1997 zebra_mac_t *mac;
1998
1999 mac = XCALLOC(MTYPE_MAC, sizeof(zebra_mac_t));
2000 *mac = *tmp_mac;
2001
2002 return ((void *)mac);
2003 }
2004
2005 /*
2006 * Add MAC entry.
2007 */
2008 static zebra_mac_t *zvni_mac_add(zebra_vni_t *zvni, struct ethaddr *macaddr)
2009 {
2010 zebra_mac_t tmp_mac;
2011 zebra_mac_t *mac = NULL;
2012
2013 memset(&tmp_mac, 0, sizeof(zebra_mac_t));
2014 memcpy(&tmp_mac.macaddr, macaddr, ETH_ALEN);
2015 mac = hash_get(zvni->mac_table, &tmp_mac, zvni_mac_alloc);
2016 assert(mac);
2017
2018 mac->neigh_list = list_new();
2019 mac->neigh_list->cmp = (int (*)(void *, void *))neigh_cmp;
2020
2021 return mac;
2022 }
2023
2024 /*
2025 * Delete MAC entry.
2026 */
2027 static int zvni_mac_del(zebra_vni_t *zvni, zebra_mac_t *mac)
2028 {
2029 zebra_mac_t *tmp_mac;
2030
2031 list_delete_and_null(&mac->neigh_list);
2032
2033 /* Free the VNI hash entry and allocated memory. */
2034 tmp_mac = hash_release(zvni->mac_table, mac);
2035 if (tmp_mac)
2036 XFREE(MTYPE_MAC, tmp_mac);
2037
2038 return 0;
2039 }
2040
2041 /*
2042 * Free MAC hash entry (callback)
2043 */
2044 static int zvni_mac_del_hash_entry(struct hash_backet *backet, void *arg)
2045 {
2046 struct mac_walk_ctx *wctx = arg;
2047 zebra_mac_t *mac = backet->data;
2048
2049 if (((wctx->flags & DEL_LOCAL_MAC) && (mac->flags & ZEBRA_MAC_LOCAL))
2050 || ((wctx->flags & DEL_REMOTE_MAC)
2051 && (mac->flags & ZEBRA_MAC_REMOTE))
2052 || ((wctx->flags & DEL_REMOTE_MAC_FROM_VTEP)
2053 && (mac->flags & ZEBRA_MAC_REMOTE)
2054 && IPV4_ADDR_SAME(&mac->fwd_info.r_vtep_ip,
2055 &wctx->r_vtep_ip))) {
2056 if (wctx->upd_client && (mac->flags & ZEBRA_MAC_LOCAL)) {
2057 zvni_mac_send_del_to_client(
2058 wctx->zvni->vni, &mac->macaddr,
2059 mac->flags);
2060 }
2061
2062 if (wctx->uninstall)
2063 zvni_mac_uninstall(wctx->zvni, mac, 0);
2064
2065 return zvni_mac_del(wctx->zvni, mac);
2066 }
2067
2068 return 0;
2069 }
2070
2071 /*
2072 * Delete all MAC entries from specific VTEP for a particular VNI.
2073 */
2074 static void zvni_mac_del_from_vtep(zebra_vni_t *zvni, int uninstall,
2075 struct in_addr *r_vtep_ip)
2076 {
2077 struct mac_walk_ctx wctx;
2078
2079 if (!zvni->mac_table)
2080 return;
2081
2082 memset(&wctx, 0, sizeof(struct mac_walk_ctx));
2083 wctx.zvni = zvni;
2084 wctx.uninstall = uninstall;
2085 wctx.flags = DEL_REMOTE_MAC_FROM_VTEP;
2086 wctx.r_vtep_ip = *r_vtep_ip;
2087
2088 hash_iterate(zvni->mac_table, (void (*)(struct hash_backet *,
2089 void *))zvni_mac_del_hash_entry,
2090 &wctx);
2091 }
2092
2093 /*
2094 * Delete all MAC entries for this VNI.
2095 */
2096 static void zvni_mac_del_all(zebra_vni_t *zvni,
2097 int uninstall, int upd_client, u_int32_t flags)
2098 {
2099 struct mac_walk_ctx wctx;
2100
2101 if (!zvni->mac_table)
2102 return;
2103
2104 memset(&wctx, 0, sizeof(struct mac_walk_ctx));
2105 wctx.zvni = zvni;
2106 wctx.uninstall = uninstall;
2107 wctx.upd_client = upd_client;
2108 wctx.flags = flags;
2109
2110 hash_iterate(zvni->mac_table, (void (*)(struct hash_backet *,
2111 void *))zvni_mac_del_hash_entry,
2112 &wctx);
2113 }
2114
2115 /*
2116 * Look up MAC hash entry.
2117 */
2118 static zebra_mac_t *zvni_mac_lookup(zebra_vni_t *zvni, struct ethaddr *mac)
2119 {
2120 zebra_mac_t tmp;
2121 zebra_mac_t *pmac;
2122
2123 memset(&tmp, 0, sizeof(tmp));
2124 memcpy(&tmp.macaddr, mac, ETH_ALEN);
2125 pmac = hash_lookup(zvni->mac_table, &tmp);
2126
2127 return pmac;
2128 }
2129
2130 /*
2131 * Inform BGP about local MAC addition.
2132 */
2133 static int zvni_mac_send_add_to_client(vni_t vni,
2134 struct ethaddr *macaddr,
2135 u_char mac_flags)
2136 {
2137 u_char flags = 0;
2138
2139 if (CHECK_FLAG(mac_flags, ZEBRA_MAC_STICKY))
2140 SET_FLAG(flags, ZEBRA_MACIP_TYPE_STICKY);
2141 if (CHECK_FLAG(mac_flags, ZEBRA_MAC_DEF_GW))
2142 SET_FLAG(flags, ZEBRA_MACIP_TYPE_GW);
2143
2144 return zvni_macip_send_msg_to_client(vni, macaddr, NULL, flags,
2145 ZEBRA_MACIP_ADD);
2146 }
2147
2148 /*
2149 * Inform BGP about local MAC deletion.
2150 */
2151 static int zvni_mac_send_del_to_client(vni_t vni,
2152 struct ethaddr *macaddr,
2153 u_char mac_flags)
2154 {
2155 u_char flags = 0;
2156
2157 if (CHECK_FLAG(mac_flags, ZEBRA_MAC_STICKY))
2158 SET_FLAG(flags, ZEBRA_MACIP_TYPE_STICKY);
2159 if (CHECK_FLAG(mac_flags, ZEBRA_MAC_DEF_GW))
2160 SET_FLAG(flags, ZEBRA_MACIP_TYPE_GW);
2161
2162 return zvni_macip_send_msg_to_client(vni, macaddr, NULL, flags,
2163 ZEBRA_MACIP_DEL);
2164 }
2165
2166 /*
2167 * Map port or (port, VLAN) to a VNI. This is invoked upon getting MAC
2168 * notifications, to see if they are of interest.
2169 */
2170 static zebra_vni_t *zvni_map_vlan(struct interface *ifp,
2171 struct interface *br_if, vlanid_t vid)
2172 {
2173 struct zebra_ns *zns;
2174 struct route_node *rn;
2175 struct interface *tmp_if = NULL;
2176 struct zebra_if *zif;
2177 struct zebra_l2info_bridge *br;
2178 struct zebra_l2info_vxlan *vxl = NULL;
2179 u_char bridge_vlan_aware;
2180 zebra_vni_t *zvni;
2181 int found = 0;
2182
2183 /* Determine if bridge is VLAN-aware or not */
2184 zif = br_if->info;
2185 assert(zif);
2186 br = &zif->l2info.br;
2187 bridge_vlan_aware = br->vlan_aware;
2188
2189 /* See if this interface (or interface plus VLAN Id) maps to a VxLAN */
2190 /* TODO: Optimize with a hash. */
2191 zns = zebra_ns_lookup(NS_DEFAULT);
2192 for (rn = route_top(zns->if_table); rn; rn = route_next(rn)) {
2193 tmp_if = (struct interface *)rn->info;
2194 if (!tmp_if)
2195 continue;
2196 zif = tmp_if->info;
2197 if (!zif || zif->zif_type != ZEBRA_IF_VXLAN)
2198 continue;
2199 if (!if_is_operative(tmp_if))
2200 continue;
2201 vxl = &zif->l2info.vxl;
2202
2203 if (zif->brslave_info.br_if != br_if)
2204 continue;
2205
2206 if (!bridge_vlan_aware || vxl->access_vlan == vid) {
2207 found = 1;
2208 break;
2209 }
2210 }
2211
2212 if (!found)
2213 return NULL;
2214
2215 zvni = zvni_lookup(vxl->vni);
2216 return zvni;
2217 }
2218
2219 /*
2220 * Map SVI and associated bridge to a VNI. This is invoked upon getting
2221 * neighbor notifications, to see if they are of interest.
2222 */
2223 static zebra_vni_t *zvni_from_svi(struct interface *ifp,
2224 struct interface *br_if)
2225 {
2226 struct zebra_ns *zns;
2227 struct route_node *rn;
2228 struct interface *tmp_if = NULL;
2229 struct zebra_if *zif;
2230 struct zebra_l2info_bridge *br;
2231 struct zebra_l2info_vxlan *vxl = NULL;
2232 u_char bridge_vlan_aware;
2233 vlanid_t vid = 0;
2234 zebra_vni_t *zvni;
2235 int found = 0;
2236
2237 if (!br_if)
2238 return NULL;
2239
2240 /* Make sure the linked interface is a bridge. */
2241 if (!IS_ZEBRA_IF_BRIDGE(br_if))
2242 return NULL;
2243
2244 /* Determine if bridge is VLAN-aware or not */
2245 zif = br_if->info;
2246 assert(zif);
2247 br = &zif->l2info.br;
2248 bridge_vlan_aware = br->vlan_aware;
2249 if (bridge_vlan_aware) {
2250 struct zebra_l2info_vlan *vl;
2251
2252 if (!IS_ZEBRA_IF_VLAN(ifp))
2253 return NULL;
2254
2255 zif = ifp->info;
2256 assert(zif);
2257 vl = &zif->l2info.vl;
2258 vid = vl->vid;
2259 }
2260
2261 /* See if this interface (or interface plus VLAN Id) maps to a VxLAN */
2262 /* TODO: Optimize with a hash. */
2263 zns = zebra_ns_lookup(NS_DEFAULT);
2264 for (rn = route_top(zns->if_table); rn; rn = route_next(rn)) {
2265 tmp_if = (struct interface *)rn->info;
2266 if (!tmp_if)
2267 continue;
2268 zif = tmp_if->info;
2269 if (!zif || zif->zif_type != ZEBRA_IF_VXLAN)
2270 continue;
2271 if (!if_is_operative(tmp_if))
2272 continue;
2273 vxl = &zif->l2info.vxl;
2274
2275 if (zif->brslave_info.br_if != br_if)
2276 continue;
2277
2278 if (!bridge_vlan_aware || vxl->access_vlan == vid) {
2279 found = 1;
2280 break;
2281 }
2282 }
2283
2284 if (!found)
2285 return NULL;
2286
2287 zvni = zvni_lookup(vxl->vni);
2288 return zvni;
2289 }
2290
2291 /* Map to SVI on bridge corresponding to specified VLAN. This can be one
2292 * of two cases:
2293 * (a) In the case of a VLAN-aware bridge, the SVI is a L3 VLAN interface
2294 * linked to the bridge
2295 * (b) In the case of a VLAN-unaware bridge, the SVI is the bridge inteface
2296 * itself
2297 */
2298 static struct interface *zvni_map_to_svi(vlanid_t vid, struct interface *br_if)
2299 {
2300 struct zebra_ns *zns;
2301 struct route_node *rn;
2302 struct interface *tmp_if = NULL;
2303 struct zebra_if *zif;
2304 struct zebra_l2info_bridge *br;
2305 struct zebra_l2info_vlan *vl;
2306 u_char bridge_vlan_aware;
2307 int found = 0;
2308
2309 /* Defensive check, caller expected to invoke only with valid bridge. */
2310 if (!br_if)
2311 return NULL;
2312
2313 /* Determine if bridge is VLAN-aware or not */
2314 zif = br_if->info;
2315 assert(zif);
2316 br = &zif->l2info.br;
2317 bridge_vlan_aware = br->vlan_aware;
2318
2319 /* Check oper status of the SVI. */
2320 if (!bridge_vlan_aware)
2321 return if_is_operative(br_if) ? br_if : NULL;
2322
2323 /* Identify corresponding VLAN interface. */
2324 /* TODO: Optimize with a hash. */
2325 zns = zebra_ns_lookup(NS_DEFAULT);
2326 for (rn = route_top(zns->if_table); rn; rn = route_next(rn)) {
2327 tmp_if = (struct interface *)rn->info;
2328 /* Check oper status of the SVI. */
2329 if (!tmp_if || !if_is_operative(tmp_if))
2330 continue;
2331 zif = tmp_if->info;
2332 if (!zif || zif->zif_type != ZEBRA_IF_VLAN
2333 || zif->link != br_if)
2334 continue;
2335 vl = (struct zebra_l2info_vlan *)&zif->l2info.vl;
2336
2337 if (vl->vid == vid) {
2338 found = 1;
2339 break;
2340 }
2341 }
2342
2343 return found ? tmp_if : NULL;
2344 }
2345
2346 /*
2347 * Install remote MAC into the kernel.
2348 */
2349 static int zvni_mac_install(zebra_vni_t *zvni, zebra_mac_t *mac)
2350 {
2351 struct zebra_if *zif;
2352 struct zebra_l2info_vxlan *vxl;
2353 u_char sticky;
2354
2355 if (!(mac->flags & ZEBRA_MAC_REMOTE))
2356 return 0;
2357
2358 zif = zvni->vxlan_if->info;
2359 if (!zif)
2360 return -1;
2361 vxl = &zif->l2info.vxl;
2362
2363 sticky = CHECK_FLAG(mac->flags, ZEBRA_MAC_STICKY) ? 1 : 0;
2364
2365 return kernel_add_mac(zvni->vxlan_if, vxl->access_vlan, &mac->macaddr,
2366 mac->fwd_info.r_vtep_ip, sticky);
2367 }
2368
2369 /*
2370 * Uninstall remote MAC from the kernel. In the scenario where the MAC
2371 * moves to remote, we have to uninstall any existing local entry first.
2372 */
2373 static int zvni_mac_uninstall(zebra_vni_t *zvni, zebra_mac_t *mac, int local)
2374 {
2375 struct zebra_if *zif;
2376 struct zebra_l2info_vxlan *vxl;
2377 struct in_addr vtep_ip = {.s_addr = 0};
2378 struct zebra_ns *zns;
2379 struct interface *ifp;
2380
2381 if (!local && !(mac->flags & ZEBRA_MAC_REMOTE))
2382 return 0;
2383
2384 if (!zvni->vxlan_if) {
2385 zlog_err("VNI %u hash %p couldn't be uninstalled - no intf",
2386 zvni->vni, zvni);
2387 return -1;
2388 }
2389
2390 zif = zvni->vxlan_if->info;
2391 if (!zif)
2392 return -1;
2393 vxl = &zif->l2info.vxl;
2394
2395 if (local) {
2396 zns = zebra_ns_lookup(NS_DEFAULT);
2397 ifp = if_lookup_by_index_per_ns(zns,
2398 mac->fwd_info.local.ifindex);
2399 if (!ifp) // unexpected
2400 return -1;
2401 } else {
2402 ifp = zvni->vxlan_if;
2403 vtep_ip = mac->fwd_info.r_vtep_ip;
2404 }
2405
2406 return kernel_del_mac(ifp, vxl->access_vlan, &mac->macaddr, vtep_ip,
2407 local);
2408 }
2409
2410 /*
2411 * Install MAC hash entry - called upon access VLAN change.
2412 */
2413 static void zvni_install_mac_hash(struct hash_backet *backet, void *ctxt)
2414 {
2415 zebra_mac_t *mac;
2416 struct mac_walk_ctx *wctx = ctxt;
2417
2418 mac = (zebra_mac_t *)backet->data;
2419 if (!mac)
2420 return;
2421
2422 if (CHECK_FLAG(mac->flags, ZEBRA_MAC_REMOTE))
2423 zvni_mac_install(wctx->zvni, mac);
2424 }
2425
2426 /*
2427 * Decrement neighbor refcount of MAC; uninstall and free it if
2428 * appropriate.
2429 */
2430 static void zvni_deref_ip2mac(zebra_vni_t *zvni, zebra_mac_t *mac,
2431 int uninstall)
2432 {
2433 if (!CHECK_FLAG(mac->flags, ZEBRA_MAC_AUTO)
2434 || !list_isempty(mac->neigh_list))
2435 return;
2436
2437 if (uninstall)
2438 zvni_mac_uninstall(zvni, mac, 0);
2439
2440 zvni_mac_del(zvni, mac);
2441 }
2442
2443 /*
2444 * Read and populate local MACs and neighbors corresponding to this VNI.
2445 */
2446 static void zvni_read_mac_neigh(zebra_vni_t *zvni,
2447 struct interface *ifp)
2448 {
2449 struct zebra_ns *zns;
2450 struct zebra_if *zif;
2451 struct interface *vlan_if;
2452 struct zebra_l2info_vxlan *vxl;
2453 struct interface *vrr_if;
2454
2455 zif = ifp->info;
2456 vxl = &zif->l2info.vxl;
2457 zns = zebra_ns_lookup(NS_DEFAULT);
2458
2459 if (IS_ZEBRA_DEBUG_VXLAN)
2460 zlog_debug(
2461 "Reading MAC FDB and Neighbors for intf %s(%u) VNI %u master %u",
2462 ifp->name, ifp->ifindex, zvni->vni,
2463 zif->brslave_info.bridge_ifindex);
2464
2465 macfdb_read_for_bridge(zns, ifp, zif->brslave_info.br_if);
2466 vlan_if = zvni_map_to_svi(vxl->access_vlan, zif->brslave_info.br_if);
2467 if (vlan_if) {
2468
2469 /* Add SVI MAC-IP */
2470 zvni_add_macip_for_intf(vlan_if, zvni);
2471
2472 /* Add VRR MAC-IP - if any*/
2473 vrr_if = zebra_get_vrr_intf_for_svi(vlan_if);
2474 if (vrr_if)
2475 zvni_add_macip_for_intf(vrr_if, zvni);
2476
2477 neigh_read_for_vlan(zns, vlan_if);
2478 }
2479 }
2480
2481 /*
2482 * Hash function for VNI.
2483 */
2484 static unsigned int vni_hash_keymake(void *p)
2485 {
2486 const zebra_vni_t *zvni = p;
2487
2488 return (jhash_1word(zvni->vni, 0));
2489 }
2490
2491 /*
2492 * Compare 2 VNI hash entries.
2493 */
2494 static int vni_hash_cmp(const void *p1, const void *p2)
2495 {
2496 const zebra_vni_t *zvni1 = p1;
2497 const zebra_vni_t *zvni2 = p2;
2498
2499 return (zvni1->vni == zvni2->vni);
2500 }
2501
2502 /*
2503 * Callback to allocate VNI hash entry.
2504 */
2505 static void *zvni_alloc(void *p)
2506 {
2507 const zebra_vni_t *tmp_vni = p;
2508 zebra_vni_t *zvni;
2509
2510 zvni = XCALLOC(MTYPE_ZVNI, sizeof(zebra_vni_t));
2511 zvni->vni = tmp_vni->vni;
2512 return ((void *)zvni);
2513 }
2514
2515 /*
2516 * Look up VNI hash entry.
2517 */
2518 static zebra_vni_t *zvni_lookup(vni_t vni)
2519 {
2520 struct zebra_vrf *zvrf;
2521 zebra_vni_t tmp_vni;
2522 zebra_vni_t *zvni = NULL;
2523
2524 zvrf = vrf_info_lookup(VRF_DEFAULT);
2525 assert(zvrf);
2526 memset(&tmp_vni, 0, sizeof(zebra_vni_t));
2527 tmp_vni.vni = vni;
2528 zvni = hash_lookup(zvrf->vni_table, &tmp_vni);
2529
2530 return zvni;
2531 }
2532
2533 /*
2534 * Add VNI hash entry.
2535 */
2536 static zebra_vni_t *zvni_add(vni_t vni)
2537 {
2538 struct zebra_vrf *zvrf;
2539 zebra_vni_t tmp_zvni;
2540 zebra_vni_t *zvni = NULL;
2541
2542 zvrf = vrf_info_lookup(VRF_DEFAULT);
2543 assert(zvrf);
2544 memset(&tmp_zvni, 0, sizeof(zebra_vni_t));
2545 tmp_zvni.vni = vni;
2546 zvni = hash_get(zvrf->vni_table, &tmp_zvni, zvni_alloc);
2547 assert(zvni);
2548
2549 /* Create hash table for MAC */
2550 zvni->mac_table =
2551 hash_create(mac_hash_keymake, mac_cmp, "Zebra VNI MAC Table");
2552
2553 /* Create hash table for neighbors */
2554 zvni->neigh_table = hash_create(neigh_hash_keymake, neigh_cmp,
2555 "Zebra VNI Neighbor Table");
2556
2557 return zvni;
2558 }
2559
2560 /*
2561 * Delete VNI hash entry.
2562 */
2563 static int zvni_del(zebra_vni_t *zvni)
2564 {
2565 struct zebra_vrf *zvrf;
2566 zebra_vni_t *tmp_zvni;
2567
2568 zvrf = vrf_info_lookup(VRF_DEFAULT);
2569 assert(zvrf);
2570
2571 zvni->vxlan_if = NULL;
2572
2573 /* Free the neighbor hash table. */
2574 hash_free(zvni->neigh_table);
2575 zvni->neigh_table = NULL;
2576
2577 /* Free the MAC hash table. */
2578 hash_free(zvni->mac_table);
2579 zvni->mac_table = NULL;
2580
2581 /* Free the VNI hash entry and allocated memory. */
2582 tmp_zvni = hash_release(zvrf->vni_table, zvni);
2583 if (tmp_zvni)
2584 XFREE(MTYPE_ZVNI, tmp_zvni);
2585
2586 return 0;
2587 }
2588
2589 /*
2590 * Inform BGP about local VNI addition.
2591 */
2592 static int zvni_send_add_to_client(zebra_vni_t *zvni)
2593 {
2594 struct zserv *client;
2595 struct stream *s;
2596
2597 client = zebra_find_client(ZEBRA_ROUTE_BGP, 0);
2598 /* BGP may not be running. */
2599 if (!client)
2600 return 0;
2601
2602 s = client->obuf;
2603 stream_reset(s);
2604
2605 zclient_create_header(s, ZEBRA_VNI_ADD, VRF_DEFAULT);
2606 stream_putl(s, zvni->vni);
2607 stream_put_in_addr(s, &zvni->local_vtep_ip);
2608 stream_put(s, &zvni->vrf_id, sizeof(vrf_id_t)); /* tenant vrf */
2609
2610 /* Write packet size. */
2611 stream_putw_at(s, 0, stream_get_endp(s));
2612
2613 if (IS_ZEBRA_DEBUG_VXLAN)
2614 zlog_debug("Send VNI_ADD %u %s tenant vrf %s to %s",
2615 zvni->vni, inet_ntoa(zvni->local_vtep_ip),
2616 vrf_id_to_name(zvni->vrf_id),
2617 zebra_route_string(client->proto));
2618
2619 client->vniadd_cnt++;
2620 return zebra_server_send_message(client);
2621 }
2622
2623 /*
2624 * Inform BGP about local VNI deletion.
2625 */
2626 static int zvni_send_del_to_client(vni_t vni)
2627 {
2628 struct zserv *client;
2629 struct stream *s;
2630
2631 client = zebra_find_client(ZEBRA_ROUTE_BGP, 0);
2632 /* BGP may not be running. */
2633 if (!client)
2634 return 0;
2635
2636 s = client->obuf;
2637 stream_reset(s);
2638
2639 zclient_create_header(s, ZEBRA_VNI_DEL, VRF_DEFAULT);
2640 stream_putl(s, vni);
2641
2642 /* Write packet size. */
2643 stream_putw_at(s, 0, stream_get_endp(s));
2644
2645 if (IS_ZEBRA_DEBUG_VXLAN)
2646 zlog_debug("Send VNI_DEL %u to %s", vni,
2647 zebra_route_string(client->proto));
2648
2649 client->vnidel_cnt++;
2650 return zebra_server_send_message(client);
2651 }
2652
2653 /*
2654 * Build the VNI hash table by going over the VxLAN interfaces. This
2655 * is called when EVPN (advertise-all-vni) is enabled.
2656 */
2657 static void zvni_build_hash_table()
2658 {
2659 struct zebra_ns *zns;
2660 struct route_node *rn;
2661 struct interface *ifp;
2662
2663 /* Walk VxLAN interfaces and create VNI hash. */
2664 zns = zebra_ns_lookup(NS_DEFAULT);
2665 for (rn = route_top(zns->if_table); rn; rn = route_next(rn)) {
2666 vni_t vni;
2667 struct zebra_if *zif;
2668 struct zebra_l2info_vxlan *vxl;
2669
2670 ifp = (struct interface *)rn->info;
2671 if (!ifp)
2672 continue;
2673 zif = ifp->info;
2674 if (!zif || zif->zif_type != ZEBRA_IF_VXLAN)
2675 continue;
2676
2677 vxl = &zif->l2info.vxl;
2678 vni = vxl->vni;
2679
2680 if (is_vni_l3(vni)) {
2681 zebra_l3vni_t *zl3vni = NULL;
2682
2683 if (IS_ZEBRA_DEBUG_VXLAN)
2684 zlog_debug("create L3-VNI hash for Intf %s(%u) L3-VNI %u",
2685 ifp->name, ifp->ifindex, vni);
2686
2687 zl3vni = zl3vni_lookup(vni);
2688 if (!zl3vni) {
2689 zlog_err(
2690 "Failed to locate L3-VNI hash at UP, IF %s(%u) VNI %u",
2691 ifp->name, ifp->ifindex, vni);
2692 return;
2693 }
2694
2695 /* associate with vxlan_if */
2696 zl3vni->local_vtep_ip = vxl->vtep_ip;
2697 zl3vni->vxlan_if = ifp;
2698
2699 /*
2700 * we need to associate with SVI.
2701 * we can associate with svi-if only after association
2702 * with vxlan-intf is complete
2703 */
2704 zl3vni->svi_if = zl3vni_map_to_svi_if(zl3vni);
2705
2706 if (is_l3vni_oper_up(zl3vni))
2707 zebra_vxlan_process_l3vni_oper_up(zl3vni);
2708
2709 } else {
2710 zebra_vni_t *zvni = NULL;
2711 zebra_l3vni_t *zl3vni = NULL;
2712 struct interface *vlan_if = NULL;
2713
2714 if (IS_ZEBRA_DEBUG_VXLAN)
2715 zlog_debug(
2716 "Create L2-VNI hash for intf %s(%u) L2-VNI %u local IP %s",
2717 ifp->name, ifp->ifindex, vni,
2718 inet_ntoa(vxl->vtep_ip));
2719
2720 /* VNI hash entry is not expected to exist. */
2721 zvni = zvni_lookup(vni);
2722 if (zvni) {
2723 zlog_err(
2724 "VNI hash already present for IF %s(%u) L2-VNI %u",
2725 ifp->name, ifp->ifindex, vni);
2726 continue;
2727 }
2728
2729 zvni = zvni_add(vni);
2730 if (!zvni) {
2731 zlog_err(
2732 "Failed to add VNI hash, IF %s(%u) L2-VNI %u",
2733 ifp->name, ifp->ifindex, vni);
2734 return;
2735 }
2736
2737 zvni->local_vtep_ip = vxl->vtep_ip;
2738 zvni->vxlan_if = ifp;
2739 vlan_if = zvni_map_to_svi(vxl->access_vlan,
2740 zif->brslave_info.br_if);
2741 if (vlan_if) {
2742 zvni->vrf_id = vlan_if->vrf_id;
2743 zl3vni = zl3vni_from_vrf(vlan_if->vrf_id);
2744 if (zl3vni)
2745 listnode_add_sort(zl3vni->l2vnis, zvni);
2746 }
2747
2748
2749 /* Inform BGP if intf is up and mapped to bridge. */
2750 if (if_is_operative(ifp) && zif->brslave_info.br_if)
2751 zvni_send_add_to_client(zvni);
2752 }
2753 }
2754 }
2755
2756 /*
2757 * See if remote VTEP matches with prefix.
2758 */
2759 static int zvni_vtep_match(struct in_addr *vtep_ip, zebra_vtep_t *zvtep)
2760 {
2761 return (IPV4_ADDR_SAME(vtep_ip, &zvtep->vtep_ip));
2762 }
2763
2764 /*
2765 * Locate remote VTEP in VNI hash table.
2766 */
2767 static zebra_vtep_t *zvni_vtep_find(zebra_vni_t *zvni, struct in_addr *vtep_ip)
2768 {
2769 zebra_vtep_t *zvtep;
2770
2771 if (!zvni)
2772 return NULL;
2773
2774 for (zvtep = zvni->vteps; zvtep; zvtep = zvtep->next) {
2775 if (zvni_vtep_match(vtep_ip, zvtep))
2776 break;
2777 }
2778
2779 return zvtep;
2780 }
2781
2782 /*
2783 * Add remote VTEP to VNI hash table.
2784 */
2785 static zebra_vtep_t *zvni_vtep_add(zebra_vni_t *zvni, struct in_addr *vtep_ip)
2786 {
2787 zebra_vtep_t *zvtep;
2788
2789 zvtep = XCALLOC(MTYPE_ZVNI_VTEP, sizeof(zebra_vtep_t));
2790 if (!zvtep) {
2791 zlog_err("Failed to alloc VTEP entry, VNI %u", zvni->vni);
2792 return NULL;
2793 }
2794
2795 zvtep->vtep_ip = *vtep_ip;
2796
2797 if (zvni->vteps)
2798 zvni->vteps->prev = zvtep;
2799 zvtep->next = zvni->vteps;
2800 zvni->vteps = zvtep;
2801
2802 return zvtep;
2803 }
2804
2805 /*
2806 * Remove remote VTEP from VNI hash table.
2807 */
2808 static int zvni_vtep_del(zebra_vni_t *zvni, zebra_vtep_t *zvtep)
2809 {
2810 if (zvtep->next)
2811 zvtep->next->prev = zvtep->prev;
2812 if (zvtep->prev)
2813 zvtep->prev->next = zvtep->next;
2814 else
2815 zvni->vteps = zvtep->next;
2816
2817 zvtep->prev = zvtep->next = NULL;
2818 XFREE(MTYPE_ZVNI_VTEP, zvtep);
2819
2820 return 0;
2821 }
2822
2823 /*
2824 * Delete all remote VTEPs for this VNI (upon VNI delete). Also
2825 * uninstall from kernel if asked to.
2826 */
2827 static int zvni_vtep_del_all(zebra_vni_t *zvni, int uninstall)
2828 {
2829 zebra_vtep_t *zvtep, *zvtep_next;
2830
2831 if (!zvni)
2832 return -1;
2833
2834 for (zvtep = zvni->vteps; zvtep; zvtep = zvtep_next) {
2835 zvtep_next = zvtep->next;
2836 if (uninstall)
2837 zvni_vtep_uninstall(zvni, &zvtep->vtep_ip);
2838 zvni_vtep_del(zvni, zvtep);
2839 }
2840
2841 return 0;
2842 }
2843
2844 /*
2845 * Install remote VTEP into the kernel.
2846 */
2847 static int zvni_vtep_install(zebra_vni_t *zvni, struct in_addr *vtep_ip)
2848 {
2849 return kernel_add_vtep(zvni->vni, zvni->vxlan_if, vtep_ip);
2850 }
2851
2852 /*
2853 * Uninstall remote VTEP from the kernel.
2854 */
2855 static int zvni_vtep_uninstall(zebra_vni_t *zvni, struct in_addr *vtep_ip)
2856 {
2857 if (!zvni->vxlan_if) {
2858 zlog_err("VNI %u hash %p couldn't be uninstalled - no intf",
2859 zvni->vni, zvni);
2860 return -1;
2861 }
2862
2863 return kernel_del_vtep(zvni->vni, zvni->vxlan_if, vtep_ip);
2864 }
2865
2866 /*
2867 * Cleanup VNI/VTEP and update kernel
2868 */
2869 static void zvni_cleanup_all(struct hash_backet *backet, void *zvrf)
2870 {
2871 zebra_vni_t *zvni = NULL;
2872 zebra_l3vni_t *zl3vni = NULL;
2873
2874 zvni = (zebra_vni_t *)backet->data;
2875 if (!zvni)
2876 return;
2877
2878 /* remove from l3-vni list */
2879 zl3vni = zl3vni_from_vrf(zvni->vrf_id);
2880 if (zl3vni)
2881 listnode_delete(zl3vni->l2vnis, zvni);
2882
2883 /* Free up all neighbors and MACs, if any. */
2884 zvni_neigh_del_all(zvni, 1, 0, DEL_ALL_NEIGH);
2885 zvni_mac_del_all(zvni, 1, 0, DEL_ALL_MAC);
2886
2887 /* Free up all remote VTEPs, if any. */
2888 zvni_vtep_del_all(zvni, 1);
2889
2890 /* Delete the hash entry. */
2891 zvni_del(zvni);
2892 }
2893
2894 /* cleanup L3VNI */
2895 static void zl3vni_cleanup_all(struct hash_backet *backet,
2896 void *args)
2897 {
2898 zebra_l3vni_t *zl3vni = NULL;
2899
2900 zl3vni = (zebra_l3vni_t *)backet->data;
2901 if (!zl3vni)
2902 return;
2903
2904 zebra_vxlan_process_l3vni_oper_down(zl3vni);
2905 }
2906
2907 static int is_host_present_in_host_list(struct list *list,
2908 struct prefix *host)
2909 {
2910 struct listnode *node = NULL;
2911 struct prefix *p = NULL;
2912
2913 for (ALL_LIST_ELEMENTS_RO(list, node, p)) {
2914 if (prefix_same(p, host))
2915 return 1;
2916 }
2917 return 0;
2918 }
2919
2920 static void host_list_add_host(struct list *list,
2921 struct prefix *host)
2922 {
2923 struct prefix *p = NULL;
2924
2925 p = XCALLOC(MTYPE_HOST_PREFIX, sizeof(struct prefix));
2926 memcpy(p, host, sizeof(struct prefix));
2927
2928 listnode_add_sort(list, p);
2929 }
2930
2931 static void host_list_delete_host(struct list *list,
2932 struct prefix *host)
2933 {
2934 struct listnode *node = NULL, *nnode = NULL, *node_to_del = NULL;
2935 struct prefix *p = NULL;
2936
2937 for (ALL_LIST_ELEMENTS(list, node, nnode, p)) {
2938 if (prefix_same(p, host)) {
2939 XFREE(MTYPE_HOST_PREFIX, p);
2940 node_to_del = node;
2941 }
2942 }
2943
2944 if (node_to_del)
2945 list_delete_node(list, node_to_del);
2946 }
2947
2948 /*
2949 * Look up MAC hash entry.
2950 */
2951 static zebra_mac_t *zl3vni_rmac_lookup(zebra_l3vni_t *zl3vni,
2952 struct ethaddr *rmac)
2953 {
2954 zebra_mac_t tmp;
2955 zebra_mac_t *pmac;
2956
2957 memset(&tmp, 0, sizeof(tmp));
2958 memcpy(&tmp.macaddr, rmac, ETH_ALEN);
2959 pmac = hash_lookup(zl3vni->rmac_table, &tmp);
2960
2961 return pmac;
2962 }
2963
2964 /*
2965 * Callback to allocate RMAC hash entry.
2966 */
2967 static void *zl3vni_rmac_alloc(void *p)
2968 {
2969 const zebra_mac_t *tmp_rmac = p;
2970 zebra_mac_t *zrmac;
2971
2972 zrmac = XCALLOC(MTYPE_MAC, sizeof(zebra_mac_t));
2973 *zrmac = *tmp_rmac;
2974
2975 return ((void *)zrmac);
2976 }
2977
2978 /*
2979 * Add RMAC entry to l3-vni
2980 */
2981 static zebra_mac_t *zl3vni_rmac_add(zebra_l3vni_t *zl3vni,
2982 struct ethaddr *rmac)
2983 {
2984 zebra_mac_t tmp_rmac;
2985 zebra_mac_t *zrmac = NULL;
2986
2987 memset(&tmp_rmac, 0, sizeof(zebra_mac_t));
2988 memcpy(&tmp_rmac.macaddr, rmac, ETH_ALEN);
2989 zrmac = hash_get(zl3vni->rmac_table, &tmp_rmac, zl3vni_rmac_alloc);
2990 assert(zrmac);
2991
2992 zrmac->host_list = list_new();
2993 zrmac->host_list->cmp = (int (*)(void *, void *))prefix_cmp;
2994
2995 SET_FLAG(zrmac->flags, ZEBRA_MAC_REMOTE);
2996 SET_FLAG(zrmac->flags, ZEBRA_MAC_REMOTE_RMAC);
2997
2998 return zrmac;
2999 }
3000
3001 /*
3002 * Delete MAC entry.
3003 */
3004 static int zl3vni_rmac_del(zebra_l3vni_t *zl3vni,
3005 zebra_mac_t *zrmac)
3006 {
3007 zebra_mac_t *tmp_rmac;
3008
3009 if (zrmac->host_list)
3010 list_delete_and_null(&zrmac->host_list);
3011 zrmac->host_list = NULL;
3012
3013 tmp_rmac = hash_release(zl3vni->rmac_table, zrmac);
3014 if (tmp_rmac)
3015 XFREE(MTYPE_MAC, tmp_rmac);
3016
3017 return 0;
3018 }
3019
3020 /*
3021 * Install remote RMAC into the kernel.
3022 */
3023 static int zl3vni_rmac_install(zebra_l3vni_t *zl3vni,
3024 zebra_mac_t *zrmac)
3025 {
3026 struct zebra_if *zif = NULL;
3027 struct zebra_l2info_vxlan *vxl = NULL;
3028
3029 if (!(CHECK_FLAG(zrmac->flags, ZEBRA_MAC_REMOTE)) ||
3030 !(CHECK_FLAG(zrmac->flags, ZEBRA_MAC_REMOTE_RMAC)))
3031 return 0;
3032
3033 zif = zl3vni->vxlan_if->info;
3034 if (!zif)
3035 return -1;
3036
3037 vxl = &zif->l2info.vxl;
3038
3039 return kernel_add_mac(zl3vni->vxlan_if, vxl->access_vlan,
3040 &zrmac->macaddr,
3041 zrmac->fwd_info.r_vtep_ip, 0);
3042 }
3043
3044 /*
3045 * Uninstall remote RMAC from the kernel.
3046 */
3047 static int zl3vni_rmac_uninstall(zebra_l3vni_t *zl3vni,
3048 zebra_mac_t *zrmac)
3049 {
3050 char buf[ETHER_ADDR_STRLEN];
3051 struct zebra_if *zif = NULL;
3052 struct zebra_l2info_vxlan *vxl = NULL;
3053
3054 if (!(CHECK_FLAG(zrmac->flags, ZEBRA_MAC_REMOTE)) ||
3055 !(CHECK_FLAG(zrmac->flags, ZEBRA_MAC_REMOTE_RMAC)))
3056 return 0;
3057
3058 if (!zl3vni->vxlan_if) {
3059 zlog_err(
3060 "RMAC %s on L3-VNI %u hash %p couldn't be uninstalled - no vxlan_if",
3061 prefix_mac2str(&zrmac->macaddr, buf, sizeof(buf)),
3062 zl3vni->vni, zl3vni);
3063 return -1;
3064 }
3065
3066 zif = zl3vni->vxlan_if->info;
3067 if (!zif)
3068 return -1;
3069
3070 vxl = &zif->l2info.vxl;
3071
3072 return kernel_del_mac(zl3vni->vxlan_if, vxl->access_vlan,
3073 &zrmac->macaddr, zrmac->fwd_info.r_vtep_ip, 0);
3074 }
3075
3076 /* handle rmac add */
3077 static int zl3vni_remote_rmac_add(zebra_l3vni_t *zl3vni,
3078 struct ethaddr *rmac,
3079 struct ipaddr *vtep_ip,
3080 struct prefix *host_prefix)
3081 {
3082 char buf[ETHER_ADDR_STRLEN];
3083 char buf1[INET6_ADDRSTRLEN];
3084 zebra_mac_t *zrmac = NULL;
3085
3086 zrmac = zl3vni_rmac_lookup(zl3vni, rmac);
3087 if (!zrmac) {
3088
3089 zrmac = zl3vni_rmac_add(zl3vni, rmac);
3090 if (!zrmac) {
3091 zlog_warn(
3092 "Failed to add RMAC %s L3VNI %u Remote VTEP %s",
3093 prefix_mac2str(rmac, buf,
3094 sizeof(buf)),
3095 zl3vni->vni, ipaddr2str(vtep_ip, buf1,
3096 sizeof(buf1)));
3097 return -1;
3098 }
3099 memset(&zrmac->fwd_info, 0, sizeof(zrmac->fwd_info));
3100 zrmac->fwd_info.r_vtep_ip = vtep_ip->ipaddr_v4;
3101
3102 /* install rmac in kernel */
3103 zl3vni_rmac_install(zl3vni, zrmac);
3104 }
3105
3106 if (!is_host_present_in_host_list(zrmac->host_list, host_prefix))
3107 host_list_add_host(zrmac->host_list, host_prefix);
3108 return 0;
3109 }
3110
3111
3112 /* handle rmac delete */
3113 static int zl3vni_remote_rmac_del(zebra_l3vni_t *zl3vni,
3114 struct ethaddr *rmac,
3115 struct prefix *host_prefix)
3116 {
3117 zebra_mac_t *zrmac = NULL;
3118
3119 zrmac = zl3vni_rmac_lookup(zl3vni, rmac);
3120 if (!zrmac)
3121 return -1;
3122
3123 host_list_delete_host(zrmac->host_list, host_prefix);
3124 if (list_isempty(zrmac->host_list)) {
3125
3126 /* uninstall from kernel */
3127 zl3vni_rmac_uninstall(zl3vni, zrmac);
3128
3129 /* del the rmac entry */
3130 zl3vni_rmac_del(zl3vni, zrmac);
3131 }
3132 return 0;
3133 }
3134
3135 /*
3136 * Look up nh hash entry on a l3-vni.
3137 */
3138 static zebra_neigh_t *zl3vni_nh_lookup(zebra_l3vni_t *zl3vni,
3139 struct ipaddr *ip)
3140 {
3141 zebra_neigh_t tmp;
3142 zebra_neigh_t *n;
3143
3144 memset(&tmp, 0, sizeof(tmp));
3145 memcpy(&tmp.ip, ip, sizeof(struct ipaddr));
3146 n = hash_lookup(zl3vni->nh_table, &tmp);
3147
3148 return n;
3149 }
3150
3151
3152 /*
3153 * Callback to allocate NH hash entry on L3-VNI.
3154 */
3155 static void *zl3vni_nh_alloc(void *p)
3156 {
3157 const zebra_neigh_t *tmp_n = p;
3158 zebra_neigh_t *n;
3159
3160 n = XCALLOC(MTYPE_NEIGH, sizeof(zebra_neigh_t));
3161 *n = *tmp_n;
3162
3163 return ((void *)n);
3164 }
3165
3166 /*
3167 * Add neighbor entry.
3168 */
3169 static zebra_neigh_t *zl3vni_nh_add(zebra_l3vni_t *zl3vni,
3170 struct ipaddr *ip,
3171 struct ethaddr *mac)
3172 {
3173 zebra_neigh_t tmp_n;
3174 zebra_neigh_t *n = NULL;
3175
3176 memset(&tmp_n, 0, sizeof(zebra_neigh_t));
3177 memcpy(&tmp_n.ip, ip, sizeof(struct ipaddr));
3178 n = hash_get(zl3vni->nh_table, &tmp_n, zl3vni_nh_alloc);
3179 assert(n);
3180
3181 n->host_list = list_new();
3182 n->host_list->cmp = (int (*)(void *, void *))prefix_cmp;
3183
3184 memcpy(&n->emac, mac, ETH_ALEN);
3185 SET_FLAG(n->flags, ZEBRA_NEIGH_REMOTE);
3186 SET_FLAG(n->flags, ZEBRA_NEIGH_REMOTE_NH);
3187
3188 return n;
3189 }
3190
3191 /*
3192 * Delete neighbor entry.
3193 */
3194 static int zl3vni_nh_del(zebra_l3vni_t *zl3vni,
3195 zebra_neigh_t *n)
3196 {
3197 zebra_neigh_t *tmp_n;
3198
3199 if (n->host_list)
3200 list_delete_and_null(&n->host_list);
3201 n->host_list = NULL;
3202
3203 tmp_n = hash_release(zl3vni->nh_table, n);
3204 if (tmp_n)
3205 XFREE(MTYPE_NEIGH, tmp_n);
3206
3207 return 0;
3208 }
3209
3210 /*
3211 * Install remote nh as neigh into the kernel.
3212 */
3213 static int zl3vni_nh_install(zebra_l3vni_t *zl3vni,
3214 zebra_neigh_t *n)
3215 {
3216 if (!is_l3vni_oper_up(zl3vni))
3217 return -1;
3218
3219 if (!(n->flags & ZEBRA_NEIGH_REMOTE) ||
3220 !(n->flags & ZEBRA_NEIGH_REMOTE_NH))
3221 return 0;
3222
3223 return kernel_add_neigh(zl3vni->svi_if, &n->ip, &n->emac);
3224 }
3225
3226 /*
3227 * Uninstall remote nh from the kernel.
3228 */
3229 static int zl3vni_nh_uninstall(zebra_l3vni_t *zl3vni,
3230 zebra_neigh_t *n)
3231 {
3232 if (!is_l3vni_oper_up(zl3vni))
3233 return -1;
3234
3235 if (!(n->flags & ZEBRA_NEIGH_REMOTE) ||
3236 !(n->flags & ZEBRA_NEIGH_REMOTE_NH))
3237 return 0;
3238
3239 return kernel_del_neigh(zl3vni->svi_if, &n->ip);
3240 }
3241
3242 /* add remote vtep as a neigh entry */
3243 static int zl3vni_remote_nh_add(zebra_l3vni_t *zl3vni,
3244 struct ipaddr *vtep_ip,
3245 struct ethaddr *rmac,
3246 struct prefix *host_prefix)
3247 {
3248 char buf[ETHER_ADDR_STRLEN];
3249 char buf1[INET6_ADDRSTRLEN];
3250 zebra_neigh_t *nh = NULL;
3251
3252 nh = zl3vni_nh_lookup(zl3vni, vtep_ip);
3253 if (!nh) {
3254 nh = zl3vni_nh_add(zl3vni, vtep_ip, rmac);
3255 if (!nh) {
3256
3257 zlog_warn(
3258 "Failed to add NH as Neigh (IP %s MAC %s L3-VNI %u)",
3259 ipaddr2str(vtep_ip, buf1,
3260 sizeof(buf1)),
3261 prefix_mac2str(rmac, buf,
3262 sizeof(buf)),
3263 zl3vni->vni);
3264 return -1;
3265 }
3266
3267 /* install the nh neigh in kernel */
3268 zl3vni_nh_install(zl3vni, nh);
3269 }
3270
3271 if (!is_host_present_in_host_list(nh->host_list, host_prefix))
3272 host_list_add_host(nh->host_list, host_prefix);
3273
3274 return 0;
3275 }
3276
3277 /* handle nh neigh delete */
3278 static int zl3vni_remote_nh_del(zebra_l3vni_t *zl3vni,
3279 struct ipaddr *vtep_ip,
3280 struct prefix *host_prefix)
3281 {
3282 zebra_neigh_t *nh = NULL;
3283
3284 nh = zl3vni_nh_lookup(zl3vni, vtep_ip);
3285 if (!nh)
3286 return -1;
3287
3288 host_list_delete_host(nh->host_list, host_prefix);
3289 if (list_isempty(nh->host_list)) {
3290
3291 /* uninstall from kernel */
3292 zl3vni_nh_uninstall(zl3vni, nh);
3293
3294 /* delete the nh entry */
3295 zl3vni_nh_del(zl3vni, nh);
3296 }
3297
3298 return 0;
3299 }
3300
3301 /* handle neigh update from kernel - the only thing of interest is to
3302 * readd stale entries.
3303 */
3304 static int zl3vni_local_nh_add_update(zebra_l3vni_t *zl3vni,
3305 struct ipaddr *ip, u_int16_t state)
3306 {
3307 #ifdef GNU_LINUX
3308 zebra_neigh_t *n = NULL;
3309
3310 n = zl3vni_nh_lookup(zl3vni, ip);
3311 if (!n)
3312 return 0;
3313
3314 /* all next hop neigh are remote and installed by frr.
3315 * If the kernel has aged this entry, re-install.
3316 */
3317 if (state & NUD_STALE)
3318 zl3vni_nh_install(zl3vni, n);
3319 #endif
3320 return 0;
3321 }
3322
3323 /* handle neigh delete from kernel */
3324 static int zl3vni_local_nh_del(zebra_l3vni_t *zl3vni,
3325 struct ipaddr *ip)
3326 {
3327 zebra_neigh_t *n = NULL;
3328
3329 n = zl3vni_nh_lookup(zl3vni, ip);
3330 if (!n)
3331 return 0;
3332
3333 /* all next hop neigh are remote and installed by frr.
3334 * If we get an age out notification for these neigh entries, we have to
3335 * install it back
3336 */
3337 zl3vni_nh_install(zl3vni, n);
3338
3339 return 0;
3340 }
3341
3342 /*
3343 * Hash function for L3 VNI.
3344 */
3345 static unsigned int l3vni_hash_keymake(void *p)
3346 {
3347 const zebra_l3vni_t *zl3vni = p;
3348
3349 return jhash_1word(zl3vni->vni, 0);
3350 }
3351
3352 /*
3353 * Compare 2 L3 VNI hash entries.
3354 */
3355 static int l3vni_hash_cmp(const void *p1, const void *p2)
3356 {
3357 const zebra_l3vni_t *zl3vni1 = p1;
3358 const zebra_l3vni_t *zl3vni2 = p2;
3359
3360 return (zl3vni1->vni == zl3vni2->vni);
3361 }
3362
3363 /*
3364 * Callback to allocate L3 VNI hash entry.
3365 */
3366 static void *zl3vni_alloc(void *p)
3367 {
3368 zebra_l3vni_t *zl3vni = NULL;
3369 const zebra_l3vni_t *tmp_l3vni = p;
3370
3371 zl3vni = XCALLOC(MTYPE_ZL3VNI, sizeof(zebra_l3vni_t));
3372 zl3vni->vni = tmp_l3vni->vni;
3373 return ((void *)zl3vni);
3374 }
3375
3376 /*
3377 * Look up L3 VNI hash entry.
3378 */
3379 static zebra_l3vni_t *zl3vni_lookup(vni_t vni)
3380 {
3381 struct zebra_ns *zns;
3382 zebra_l3vni_t tmp_l3vni;
3383 zebra_l3vni_t *zl3vni = NULL;
3384
3385 zns = zebra_ns_lookup(NS_DEFAULT);
3386 assert(zns);
3387 memset(&tmp_l3vni, 0, sizeof(zebra_l3vni_t));
3388 tmp_l3vni.vni = vni;
3389 zl3vni = hash_lookup(zns->l3vni_table, &tmp_l3vni);
3390
3391 return zl3vni;
3392 }
3393
3394 /*
3395 * Add L3 VNI hash entry.
3396 */
3397 static zebra_l3vni_t *zl3vni_add(vni_t vni, vrf_id_t vrf_id)
3398 {
3399 zebra_l3vni_t tmp_zl3vni;
3400 struct zebra_ns *zns = NULL;
3401 zebra_l3vni_t *zl3vni = NULL;
3402
3403 zns = zebra_ns_lookup(NS_DEFAULT);
3404 assert(zns);
3405
3406 memset(&tmp_zl3vni, 0, sizeof(zebra_l3vni_t));
3407 tmp_zl3vni.vni = vni;
3408
3409 zl3vni = hash_get(zns->l3vni_table, &tmp_zl3vni, zl3vni_alloc);
3410 assert(zl3vni);
3411
3412 zl3vni->vrf_id = vrf_id;
3413 zl3vni->svi_if = NULL;
3414 zl3vni->vxlan_if = NULL;
3415 zl3vni->l2vnis = list_new();
3416 zl3vni->l2vnis->cmp = (int (*)(void *, void *))vni_hash_cmp;
3417
3418 /* Create hash table for remote RMAC */
3419 zl3vni->rmac_table =
3420 hash_create(mac_hash_keymake, mac_cmp,
3421 "Zebra L3-VNI RMAC-Table");
3422
3423 /* Create hash table for neighbors */
3424 zl3vni->nh_table = hash_create(neigh_hash_keymake, neigh_cmp,
3425 "Zebra L3-VNI next-hop table");
3426
3427 return zl3vni;
3428 }
3429
3430 /*
3431 * Delete L3 VNI hash entry.
3432 */
3433 static int zl3vni_del(zebra_l3vni_t *zl3vni)
3434 {
3435 struct zebra_ns *zns;
3436 zebra_l3vni_t *tmp_zl3vni;
3437
3438 zns = zebra_ns_lookup(NS_DEFAULT);
3439 assert(zns);
3440
3441 /* free the list of l2vnis */
3442 list_delete_and_null(&zl3vni->l2vnis);
3443 zl3vni->l2vnis = NULL;
3444
3445 /* Free the rmac table */
3446 hash_free(zl3vni->rmac_table);
3447 zl3vni->rmac_table = NULL;
3448
3449 /* Free the nh table */
3450 hash_free(zl3vni->nh_table);
3451 zl3vni->nh_table = NULL;
3452
3453 /* Free the VNI hash entry and allocated memory. */
3454 tmp_zl3vni = hash_release(zns->l3vni_table, zl3vni);
3455 if (tmp_zl3vni)
3456 XFREE(MTYPE_ZL3VNI, tmp_zl3vni);
3457
3458 return 0;
3459 }
3460
3461 static int is_vni_l3(vni_t vni)
3462 {
3463 zebra_l3vni_t *zl3vni = NULL;
3464
3465 zl3vni = zl3vni_lookup(vni);
3466 if (zl3vni)
3467 return 1;
3468 return 0;
3469 }
3470
3471 static struct interface *zl3vni_map_to_vxlan_if(zebra_l3vni_t *zl3vni)
3472 {
3473 struct zebra_ns *zns = NULL;
3474 struct route_node *rn = NULL;
3475 struct interface *ifp = NULL;
3476
3477 /* loop through all vxlan-interface */
3478 zns = zebra_ns_lookup(NS_DEFAULT);
3479 for (rn = route_top(zns->if_table); rn; rn = route_next(rn)) {
3480
3481 struct zebra_if *zif = NULL;
3482 struct zebra_l2info_vxlan *vxl = NULL;
3483
3484 ifp = (struct interface *)rn->info;
3485 if (!ifp)
3486 continue;
3487
3488 zif = ifp->info;
3489 if (!zif || zif->zif_type != ZEBRA_IF_VXLAN)
3490 continue;
3491
3492 vxl = &zif->l2info.vxl;
3493 if (vxl->vni == zl3vni->vni) {
3494 zl3vni->local_vtep_ip = vxl->vtep_ip;
3495 return ifp;
3496 }
3497 }
3498
3499 return NULL;
3500 }
3501
3502 static struct interface *zl3vni_map_to_svi_if(zebra_l3vni_t *zl3vni)
3503 {
3504 struct zebra_if *zif = NULL; /* zebra_if for vxlan_if */
3505 struct zebra_l2info_vxlan *vxl = NULL; /* l2 info for vxlan_if */
3506
3507 if (!zl3vni->vxlan_if)
3508 return NULL;
3509
3510 zif = zl3vni->vxlan_if->info;
3511 if (!zif)
3512 return NULL;
3513
3514 vxl = &zif->l2info.vxl;
3515
3516 return zvni_map_to_svi(vxl->access_vlan, zif->brslave_info.br_if);
3517 }
3518
3519 static zebra_l3vni_t *zl3vni_from_vrf(vrf_id_t vrf_id)
3520 {
3521 struct zebra_vrf *zvrf = NULL;
3522
3523 zvrf = zebra_vrf_lookup_by_id(vrf_id);
3524 if (!zvrf)
3525 return NULL;
3526
3527 return zl3vni_lookup(zvrf->l3vni);
3528 }
3529
3530 /*
3531 * Map SVI and associated bridge to a VNI. This is invoked upon getting
3532 * neighbor notifications, to see if they are of interest.
3533 */
3534 static zebra_l3vni_t *zl3vni_from_svi(struct interface *ifp,
3535 struct interface *br_if)
3536 {
3537 int found = 0;
3538 vlanid_t vid = 0;
3539 u_char bridge_vlan_aware = 0;
3540 zebra_l3vni_t *zl3vni = NULL;
3541 struct zebra_ns *zns = NULL;
3542 struct route_node *rn = NULL;
3543 struct zebra_if *zif = NULL;
3544 struct interface *tmp_if = NULL;
3545 struct zebra_l2info_bridge *br = NULL;
3546 struct zebra_l2info_vxlan *vxl = NULL;
3547
3548 if (!br_if)
3549 return NULL;
3550
3551 /* Make sure the linked interface is a bridge. */
3552 if (!IS_ZEBRA_IF_BRIDGE(br_if))
3553 return NULL;
3554
3555 /* Determine if bridge is VLAN-aware or not */
3556 zif = br_if->info;
3557 assert(zif);
3558 br = &zif->l2info.br;
3559 bridge_vlan_aware = br->vlan_aware;
3560 if (bridge_vlan_aware) {
3561 struct zebra_l2info_vlan *vl;
3562
3563 if (!IS_ZEBRA_IF_VLAN(ifp))
3564 return NULL;
3565
3566 zif = ifp->info;
3567 assert(zif);
3568 vl = &zif->l2info.vl;
3569 vid = vl->vid;
3570 }
3571
3572 /* See if this interface (or interface plus VLAN Id) maps to a VxLAN */
3573 /* TODO: Optimize with a hash. */
3574 zns = zebra_ns_lookup(NS_DEFAULT);
3575 for (rn = route_top(zns->if_table); rn; rn = route_next(rn)) {
3576 tmp_if = (struct interface *)rn->info;
3577 if (!tmp_if)
3578 continue;
3579 zif = tmp_if->info;
3580 if (!zif || zif->zif_type != ZEBRA_IF_VXLAN)
3581 continue;
3582 if (!if_is_operative(tmp_if))
3583 continue;
3584 vxl = &zif->l2info.vxl;
3585
3586 if (zif->brslave_info.br_if != br_if)
3587 continue;
3588
3589 if (!bridge_vlan_aware || vxl->access_vlan == vid) {
3590 found = 1;
3591 break;
3592 }
3593 }
3594
3595 if (!found)
3596 return NULL;
3597
3598 zl3vni = zl3vni_lookup(vxl->vni);
3599 return zl3vni;
3600 }
3601
3602 /*
3603 * Inform BGP about l3-vni.
3604 */
3605 static int zl3vni_send_add_to_client(zebra_l3vni_t *zl3vni)
3606 {
3607 struct stream *s = NULL;
3608 struct zserv *client = NULL;
3609 struct ethaddr rmac;
3610 char buf[ETHER_ADDR_STRLEN];
3611
3612 client = zebra_find_client(ZEBRA_ROUTE_BGP, 0);
3613 /* BGP may not be running. */
3614 if (!client)
3615 return 0;
3616
3617 /* get the rmac */
3618 memset(&rmac, 0, sizeof(struct ethaddr));
3619 zl3vni_get_rmac(zl3vni, &rmac);
3620
3621 s = client->obuf;
3622 stream_reset(s);
3623
3624 zclient_create_header(s, ZEBRA_L3VNI_ADD,
3625 zl3vni_vrf_id(zl3vni));
3626 stream_putl(s, zl3vni->vni);
3627 stream_put(s, &rmac, sizeof(struct ethaddr));
3628 stream_put_in_addr(s, &zl3vni->local_vtep_ip);
3629
3630 /* Write packet size. */
3631 stream_putw_at(s, 0, stream_get_endp(s));
3632
3633 if (IS_ZEBRA_DEBUG_VXLAN)
3634 zlog_debug("Send L3_VNI_ADD %u VRF %s RMAC %s local-ip %s to %s",
3635 zl3vni->vni, vrf_id_to_name(zl3vni_vrf_id(zl3vni)),
3636 prefix_mac2str(&rmac, buf, sizeof(buf)),
3637 inet_ntoa(zl3vni->local_vtep_ip),
3638 zebra_route_string(client->proto));
3639
3640 client->l3vniadd_cnt++;
3641 return zebra_server_send_message(client);
3642 }
3643
3644 /*
3645 * Inform BGP about local l3-VNI deletion.
3646 */
3647 static int zl3vni_send_del_to_client(zebra_l3vni_t *zl3vni)
3648 {
3649 struct stream *s = NULL;
3650 struct zserv *client = NULL;
3651
3652 client = zebra_find_client(ZEBRA_ROUTE_BGP, 0);
3653 /* BGP may not be running. */
3654 if (!client)
3655 return 0;
3656
3657 s = client->obuf;
3658 stream_reset(s);
3659
3660 zclient_create_header(s, ZEBRA_L3VNI_DEL,
3661 zl3vni_vrf_id(zl3vni));
3662 stream_putl(s, zl3vni->vni);
3663
3664 /* Write packet size. */
3665 stream_putw_at(s, 0, stream_get_endp(s));
3666
3667 if (IS_ZEBRA_DEBUG_VXLAN)
3668 zlog_debug("Send L3_VNI_DEL %u VRF %s to %s",
3669 zl3vni->vni,
3670 vrf_id_to_name(zl3vni_vrf_id(zl3vni)),
3671 zebra_route_string(client->proto));
3672
3673 client->l3vnidel_cnt++;
3674 return zebra_server_send_message(client);
3675 }
3676
3677 static void zebra_vxlan_process_l3vni_oper_up(zebra_l3vni_t *zl3vni)
3678 {
3679 if (IS_ZEBRA_DEBUG_VXLAN)
3680 zlog_debug("L3-VNI %u is UP - send add to BGP",
3681 zl3vni->vni);
3682
3683 /* send l3vni add to BGP */
3684 zl3vni_send_add_to_client(zl3vni);
3685 }
3686
3687 static void zebra_vxlan_process_l3vni_oper_down(zebra_l3vni_t *zl3vni)
3688 {
3689 if (IS_ZEBRA_DEBUG_VXLAN)
3690 zlog_debug("L3-VNI %u is Down - Send del to BGP",
3691 zl3vni->vni);
3692
3693 /* send l3-vni del to BGP*/
3694 zl3vni_send_del_to_client(zl3vni);
3695 }
3696
3697 static void zvni_add_to_l3vni_list(struct hash_backet *backet,
3698 void *ctxt)
3699 {
3700 zebra_vni_t *zvni = (zebra_vni_t *) backet->data;
3701 zebra_l3vni_t *zl3vni = (zebra_l3vni_t *) ctxt;
3702
3703 if (zvni->vrf_id == zl3vni_vrf_id(zl3vni))
3704 listnode_add_sort(zl3vni->l2vnis, zvni);
3705 }
3706
3707 /*
3708 * handle transition of vni from l2 to l3 and vice versa
3709 */
3710 static int zebra_vxlan_handle_vni_transition(struct zebra_vrf *zvrf,
3711 vni_t vni, int add)
3712 {
3713 zebra_vni_t *zvni = NULL;
3714
3715 /* There is a possibility that VNI notification was already received
3716 * from kernel and we programmed it as L2-VNI
3717 * In such a case we need to delete this L2-VNI first, so
3718 * that it can be reprogrammed as L3-VNI in the system. It is also
3719 * possible that the vrf-vni mapping is removed from FRR while the vxlan
3720 * interface is still present in kernel. In this case to keep it
3721 * symmetric, we will delete the l3-vni and reprogram it as l2-vni
3722 */
3723 if (add) {
3724 /* Locate hash entry */
3725 zvni = zvni_lookup(vni);
3726 if (!zvni)
3727 return 0;
3728
3729 if (IS_ZEBRA_DEBUG_VXLAN)
3730 zlog_debug("Del L2-VNI %u - transition to L3-VNI",
3731 vni);
3732
3733 /* Delete VNI from BGP. */
3734 zvni_send_del_to_client(zvni->vni);
3735
3736 /* Free up all neighbors and MAC, if any. */
3737 zvni_neigh_del_all(zvni, 0, 0, DEL_ALL_NEIGH);
3738 zvni_mac_del_all(zvni, 0, 0, DEL_ALL_MAC);
3739
3740 /* Free up all remote VTEPs, if any. */
3741 zvni_vtep_del_all(zvni, 0);
3742
3743 /* Delete the hash entry. */
3744 if (zvni_del(zvni)) {
3745 zlog_err("Failed to del VNI hash %p, VNI %u",
3746 zvni, zvni->vni);
3747 return -1;
3748 }
3749 } else {
3750 /* TODO_MITESH: This needs to be thought through. We don't have
3751 * enough information at this point to reprogram the vni as
3752 * l2-vni. One way is to store the required info in l3-vni and
3753 * used it solely for this purpose
3754 */
3755 }
3756
3757 return 0;
3758 }
3759
3760 /* delete and uninstall rmac hash entry */
3761 static void zl3vni_del_rmac_hash_entry(struct hash_backet *backet,
3762 void *ctx)
3763 {
3764 zebra_mac_t *zrmac = NULL;
3765 zebra_l3vni_t *zl3vni = NULL;
3766
3767 zrmac = (zebra_mac_t *)backet->data;
3768 zl3vni = (zebra_l3vni_t *)ctx;
3769 zl3vni_rmac_uninstall(zl3vni, zrmac);
3770 zl3vni_rmac_del(zl3vni, zrmac);
3771 }
3772
3773 /* delete and uninstall nh hash entry */
3774 static void zl3vni_del_nh_hash_entry(struct hash_backet *backet,
3775 void *ctx)
3776 {
3777 zebra_neigh_t *n = NULL;
3778 zebra_l3vni_t *zl3vni = NULL;
3779
3780 n = (zebra_neigh_t *)backet->data;
3781 zl3vni = (zebra_l3vni_t *)ctx;
3782 zl3vni_nh_uninstall(zl3vni, n);
3783 zl3vni_nh_del(zl3vni, n);
3784 }
3785
3786 static int ip_prefix_send_to_client(vrf_id_t vrf_id,
3787 struct prefix *p,
3788 uint16_t cmd)
3789 {
3790 struct zserv *client = NULL;
3791 struct stream *s = NULL;
3792 char buf[PREFIX_STRLEN];
3793
3794 client = zebra_find_client(ZEBRA_ROUTE_BGP);
3795 /* BGP may not be running. */
3796 if (!client)
3797 return 0;
3798
3799 s = client->obuf;
3800 stream_reset(s);
3801
3802 zserv_create_header(s, cmd, vrf_id);
3803 stream_put(s, p, sizeof(struct prefix));
3804
3805 /* Write packet size. */
3806 stream_putw_at(s, 0, stream_get_endp(s));
3807
3808 if (IS_ZEBRA_DEBUG_VXLAN)
3809 zlog_debug(
3810 "Send ip prefix %s %s on vrf %s",
3811 prefix2str(p, buf, sizeof(buf)),
3812 (cmd == ZEBRA_IP_PREFIX_ROUTE_ADD) ? "ADD" : "DEL",
3813 vrf_id_to_name(vrf_id));
3814
3815 if (cmd == ZEBRA_IP_PREFIX_ROUTE_ADD)
3816 client->prefixadd_cnt++;
3817 else
3818 client->prefixdel_cnt++;
3819
3820 return zebra_server_send_message(client);
3821 }
3822
3823 /* re-add remote rmac if needed */
3824 static int zebra_vxlan_readd_remote_rmac(zebra_l3vni_t *zl3vni,
3825 struct ethaddr *rmac)
3826 {
3827 char buf[ETHER_ADDR_STRLEN];
3828 zebra_mac_t *zrmac = NULL;
3829
3830 zrmac = zl3vni_rmac_lookup(zl3vni, rmac);
3831 if (!zrmac)
3832 return 0;
3833
3834 if (IS_ZEBRA_DEBUG_VXLAN)
3835 zlog_debug("Del remote RMAC %s L3VNI %u - readd",
3836 prefix_mac2str(rmac, buf, sizeof(buf)),
3837 zl3vni->vni);
3838
3839 zl3vni_rmac_install(zl3vni, zrmac);
3840 return 0;
3841 }
3842
3843 /* Public functions */
3844
3845 /* handle evpn route in vrf table */
3846 void zebra_vxlan_evpn_vrf_route_add(vrf_id_t vrf_id,
3847 struct ethaddr *rmac,
3848 struct ipaddr *vtep_ip,
3849 struct prefix *host_prefix)
3850 {
3851 zebra_l3vni_t *zl3vni = NULL;
3852
3853 zl3vni = zl3vni_from_vrf(vrf_id);
3854 if (!zl3vni || !is_l3vni_oper_up(zl3vni))
3855 return;
3856
3857 /* add the next hop neighbor */
3858 zl3vni_remote_nh_add(zl3vni, vtep_ip, rmac, host_prefix);
3859
3860 /* add the rmac */
3861 zl3vni_remote_rmac_add(zl3vni, rmac, vtep_ip, host_prefix);
3862 }
3863
3864 /* handle evpn vrf route delete */
3865 void zebra_vxlan_evpn_vrf_route_del(vrf_id_t vrf_id,
3866 struct ethaddr *rmac,
3867 struct ipaddr *vtep_ip,
3868 struct prefix *host_prefix)
3869 {
3870 zebra_l3vni_t *zl3vni = NULL;
3871
3872 zl3vni = zl3vni_from_vrf(vrf_id);
3873 if (!zl3vni)
3874 return;
3875
3876 /* delete the next hop entry */
3877 zl3vni_remote_nh_del(zl3vni, vtep_ip, host_prefix);
3878
3879 /* delete the rmac entry */
3880 zl3vni_remote_rmac_del(zl3vni, rmac, host_prefix);
3881 }
3882
3883 void zebra_vxlan_print_specific_rmac_l3vni(struct vty *vty,
3884 vni_t l3vni,
3885 struct ethaddr *rmac,
3886 u_char use_json)
3887 {
3888 zebra_l3vni_t *zl3vni = NULL;
3889 zebra_mac_t *zrmac = NULL;
3890 json_object *json = NULL;
3891
3892 if (!is_evpn_enabled()) {
3893 if (use_json)
3894 vty_out(vty, "{}\n");
3895 return;
3896 }
3897
3898 if (use_json)
3899 json = json_object_new_object();
3900
3901 zl3vni = zl3vni_lookup(l3vni);
3902 if (!zl3vni) {
3903 if (use_json)
3904 vty_out(vty, "{}\n");
3905 else
3906 vty_out(vty, "%% L3-VNI %u doesnt exist\n",
3907 l3vni);
3908 return;
3909 }
3910
3911 zrmac = zl3vni_rmac_lookup(zl3vni, rmac);
3912 if (!zrmac) {
3913 if (use_json)
3914 vty_out(vty, "{}\n");
3915 else
3916 vty_out(vty,
3917 "%% Requested RMAC doesnt exist in L3-VNI %u",
3918 l3vni);
3919 return;
3920 }
3921
3922 zl3vni_print_rmac(zrmac, vty, json);
3923
3924 if (use_json) {
3925 vty_out(vty, "%s\n", json_object_to_json_string_ext(
3926 json, JSON_C_TO_STRING_PRETTY));
3927 json_object_free(json);
3928 }
3929 }
3930
3931 void zebra_vxlan_print_rmacs_l3vni(struct vty *vty,
3932 vni_t l3vni,
3933 u_char use_json)
3934 {
3935 zebra_l3vni_t *zl3vni;
3936 u_int32_t num_rmacs;
3937 struct rmac_walk_ctx wctx;
3938 json_object *json = NULL;
3939
3940 if (!is_evpn_enabled())
3941 return;
3942
3943 zl3vni = zl3vni_lookup(l3vni);
3944 if (!zl3vni) {
3945 if (use_json)
3946 vty_out(vty, "{}\n");
3947 else
3948 vty_out(vty, "%% L3-VNI %u does not exist\n", l3vni);
3949 return;
3950 }
3951 num_rmacs = hashcount(zl3vni->rmac_table);
3952 if (!num_rmacs)
3953 return;
3954
3955 if (use_json)
3956 json = json_object_new_object();
3957
3958 memset(&wctx, 0, sizeof(struct rmac_walk_ctx));
3959 wctx.vty = vty;
3960 wctx.json = json;
3961 if (!use_json) {
3962 vty_out(vty,
3963 "Number of Remote RMACs known for this VNI: %u\n",
3964 num_rmacs);
3965 vty_out(vty, "%-17s %-21s\n", "MAC", "Remote VTEP");
3966 } else
3967 json_object_int_add(json, "numRmacs", num_rmacs);
3968
3969 hash_iterate(zl3vni->rmac_table, zl3vni_print_rmac_hash, &wctx);
3970
3971 if (use_json) {
3972 vty_out(vty, "%s\n", json_object_to_json_string_ext(
3973 json, JSON_C_TO_STRING_PRETTY));
3974 json_object_free(json);
3975 }
3976 }
3977
3978 void zebra_vxlan_print_rmacs_all_l3vni(struct vty *vty,
3979 u_char use_json)
3980 {
3981 struct zebra_ns *zns = NULL;
3982 json_object *json = NULL;
3983 void *args[2];
3984
3985 if (!is_evpn_enabled()) {
3986 if (use_json)
3987 vty_out(vty, "{}\n");
3988 return;
3989 }
3990
3991 zns = zebra_ns_lookup(NS_DEFAULT);
3992 if (!zns) {
3993 if (use_json)
3994 vty_out(vty, "{}\n");
3995 return;
3996 }
3997
3998 if (use_json)
3999 json = json_object_new_object();
4000
4001 args[0] = vty;
4002 args[1] = json;
4003 hash_iterate(zns->l3vni_table,
4004 (void (*)(struct hash_backet *,
4005 void *))zl3vni_print_rmac_hash_all_vni,
4006 args);
4007
4008 if (use_json) {
4009 vty_out(vty, "%s\n", json_object_to_json_string_ext(
4010 json, JSON_C_TO_STRING_PRETTY));
4011 json_object_free(json);
4012 }
4013 }
4014
4015 void zebra_vxlan_print_specific_nh_l3vni(struct vty *vty,
4016 vni_t l3vni,
4017 struct ipaddr *ip,
4018 u_char use_json)
4019 {
4020 zebra_l3vni_t *zl3vni = NULL;
4021 zebra_neigh_t *n = NULL;
4022 json_object *json = NULL;
4023
4024 if (!is_evpn_enabled()) {
4025 if (use_json)
4026 vty_out(vty, "{}\n");
4027 return;
4028 }
4029
4030 if (use_json)
4031 json = json_object_new_object();
4032
4033 zl3vni = zl3vni_lookup(l3vni);
4034 if (!zl3vni) {
4035 if (use_json)
4036 vty_out(vty, "{}\n");
4037 else
4038 vty_out(vty, "%% L3-VNI %u does not exist\n", l3vni);
4039 return;
4040 }
4041
4042 n = zl3vni_nh_lookup(zl3vni, ip);
4043 if (!n) {
4044 if (use_json)
4045 vty_out(vty, "{}\n");
4046 else
4047 vty_out(vty,
4048 "%% Requested next-hop not present for L3-VNI %u",
4049 l3vni);
4050 return;
4051 }
4052
4053 zl3vni_print_nh(n, vty, json);
4054
4055 if (use_json) {
4056 vty_out(vty, "%s\n", json_object_to_json_string_ext(
4057 json, JSON_C_TO_STRING_PRETTY));
4058 json_object_free(json);
4059 }
4060 }
4061
4062 void zebra_vxlan_print_nh_l3vni(struct vty *vty,
4063 vni_t l3vni,
4064 u_char use_json)
4065 {
4066 u_int32_t num_nh;
4067 struct nh_walk_ctx wctx;
4068 json_object *json = NULL;
4069 zebra_l3vni_t *zl3vni = NULL;
4070
4071 if (!is_evpn_enabled())
4072 return;
4073
4074 zl3vni = zl3vni_lookup(l3vni);
4075 if (!zl3vni) {
4076 if (use_json)
4077 vty_out(vty, "{}\n");
4078 else
4079 vty_out(vty, "%% L3-VNI %u does not exist\n", l3vni);
4080 return;
4081 }
4082
4083 num_nh = hashcount(zl3vni->nh_table);
4084 if (!num_nh)
4085 return;
4086
4087 if (use_json)
4088 json = json_object_new_object();
4089
4090 wctx.vty = vty;
4091 wctx.json = json;
4092 if (!use_json) {
4093 vty_out(vty,
4094 "Number of NH Neighbors known for this VNI: %u\n",
4095 num_nh);
4096 vty_out(vty, "%-15s %-17s\n", "IP", "RMAC");
4097 } else
4098 json_object_int_add(json, "numNextHops", num_nh);
4099
4100 hash_iterate(zl3vni->nh_table, zl3vni_print_nh_hash, &wctx);
4101
4102 if (use_json) {
4103 vty_out(vty, "%s\n", json_object_to_json_string_ext(
4104 json, JSON_C_TO_STRING_PRETTY));
4105 json_object_free(json);
4106 }
4107 }
4108
4109 void zebra_vxlan_print_nh_all_l3vni(struct vty *vty,
4110 u_char use_json)
4111 {
4112 struct zebra_ns *zns = NULL;
4113 json_object *json = NULL;
4114 void *args[2];
4115
4116 if (!is_evpn_enabled()) {
4117 if (use_json)
4118 vty_out(vty, "{}\n");
4119 return;
4120 }
4121
4122 zns = zebra_ns_lookup(NS_DEFAULT);
4123 if (!zns)
4124 return;
4125
4126 if (use_json)
4127 json = json_object_new_object();
4128
4129 args[0] = vty;
4130 args[1] = json;
4131 hash_iterate(zns->l3vni_table,
4132 (void (*)(struct hash_backet *,
4133 void *))zl3vni_print_nh_hash_all_vni,
4134 args);
4135
4136 if (use_json) {
4137 vty_out(vty, "%s\n", json_object_to_json_string_ext(
4138 json, JSON_C_TO_STRING_PRETTY));
4139 json_object_free(json);
4140 }
4141 return;
4142 }
4143
4144 /*
4145 * Display L3 VNI information (VTY command handler).
4146 */
4147 void zebra_vxlan_print_l3vni(struct vty *vty, vni_t vni, u_char use_json)
4148 {
4149 void *args[2];
4150 json_object *json = NULL;
4151 zebra_l3vni_t *zl3vni = NULL;
4152
4153 if (!is_evpn_enabled()) {
4154 if (use_json)
4155 vty_out(vty, "{}\n");
4156 return;
4157 }
4158
4159 zl3vni = zl3vni_lookup(vni);
4160 if (!zl3vni) {
4161 if (use_json)
4162 vty_out(vty, "{}\n");
4163 else
4164 vty_out(vty, "%% VNI %u does not exist\n", vni);
4165 return;
4166 }
4167
4168 if (use_json)
4169 json = json_object_new_object();
4170
4171 args[0] = vty;
4172 args[1] = json;
4173 zl3vni_print(zl3vni, (void *)args);
4174
4175 if (use_json) {
4176 vty_out(vty, "%s\n", json_object_to_json_string_ext(
4177 json, JSON_C_TO_STRING_PRETTY));
4178 json_object_free(json);
4179 }
4180 }
4181
4182 void zebra_vxlan_print_vrf_vni(struct vty *vty, struct zebra_vrf *zvrf,
4183 json_object *json_vrfs)
4184 {
4185 char buf[ETHER_ADDR_STRLEN];
4186 zebra_l3vni_t *zl3vni = NULL;
4187
4188 zl3vni = zl3vni_lookup(zvrf->l3vni);
4189 if (!zl3vni)
4190 return;
4191
4192 if (!json_vrfs) {
4193 vty_out(vty, "%-37s %-10u %-20s %-20s %-5s %-18s\n",
4194 zvrf_name(zvrf),
4195 zl3vni->vni,
4196 zl3vni_vxlan_if_name(zl3vni),
4197 zl3vni_svi_if_name(zl3vni),
4198 zl3vni_state2str(zl3vni),
4199 zl3vni_rmac2str(zl3vni, buf, sizeof(buf)));
4200 } else {
4201 json_object *json_vrf = NULL;
4202 json_vrf = json_object_new_object();
4203 json_object_string_add(json_vrf, "vrf",
4204 zvrf_name(zvrf));
4205 json_object_int_add(json_vrf, "vni", zl3vni->vni);
4206 json_object_string_add(json_vrf, "vxlanIntf",
4207 zl3vni_vxlan_if_name(zl3vni));
4208 json_object_string_add(json_vrf, "sviIntf",
4209 zl3vni_svi_if_name(zl3vni));
4210 json_object_string_add(json_vrf, "state",
4211 zl3vni_state2str(zl3vni));
4212 json_object_string_add(json_vrf, "routerMac",
4213 zl3vni_rmac2str(zl3vni, buf,
4214 sizeof(buf)));
4215 json_object_array_add(json_vrfs, json_vrf);
4216 }
4217 }
4218
4219 /*
4220 * Display Neighbors for a VNI (VTY command handler).
4221 */
4222 void zebra_vxlan_print_neigh_vni(struct vty *vty, struct zebra_vrf *zvrf,
4223 vni_t vni, u_char use_json)
4224 {
4225 zebra_vni_t *zvni;
4226 u_int32_t num_neigh;
4227 struct neigh_walk_ctx wctx;
4228 json_object *json = NULL;
4229
4230 if (!is_evpn_enabled())
4231 return;
4232 zvni = zvni_lookup(vni);
4233 if (!zvni) {
4234 if (use_json)
4235 vty_out(vty, "{}\n");
4236 else
4237 vty_out(vty, "%% VNI %u does not exist\n", vni);
4238 return;
4239 }
4240 num_neigh = hashcount(zvni->neigh_table);
4241 if (!num_neigh)
4242 return;
4243
4244 if (use_json)
4245 json = json_object_new_object();
4246
4247 /* Since we have IPv6 addresses to deal with which can vary widely in
4248 * size, we try to be a bit more elegant in display by first computing
4249 * the maximum width.
4250 */
4251 memset(&wctx, 0, sizeof(struct neigh_walk_ctx));
4252 wctx.zvni = zvni;
4253 wctx.vty = vty;
4254 wctx.addr_width = 15;
4255 wctx.json = json;
4256 hash_iterate(zvni->neigh_table, zvni_find_neigh_addr_width, &wctx);
4257
4258 if (!use_json) {
4259 vty_out(vty,
4260 "Number of ARPs (local and remote) known for this VNI: %u\n",
4261 num_neigh);
4262 vty_out(vty, "%*s %-6s %-17s %-21s\n", -wctx.addr_width, "IP",
4263 "Type", "MAC", "Remote VTEP");
4264 } else
4265 json_object_int_add(json, "numArpNd", num_neigh);
4266
4267 hash_iterate(zvni->neigh_table, zvni_print_neigh_hash, &wctx);
4268 if (use_json) {
4269 vty_out(vty, "%s\n", json_object_to_json_string_ext(
4270 json, JSON_C_TO_STRING_PRETTY));
4271 json_object_free(json);
4272 }
4273 }
4274
4275 /*
4276 * Display neighbors across all VNIs (VTY command handler).
4277 */
4278 void zebra_vxlan_print_neigh_all_vni(struct vty *vty, struct zebra_vrf *zvrf,
4279 u_char use_json)
4280 {
4281 json_object *json = NULL;
4282 void *args[2];
4283
4284 if (!is_evpn_enabled())
4285 return;
4286
4287 if (use_json)
4288 json = json_object_new_object();
4289
4290 args[0] = vty;
4291 args[1] = json;
4292 hash_iterate(zvrf->vni_table,
4293 (void (*)(struct hash_backet *,
4294 void *))zvni_print_neigh_hash_all_vni,
4295 args);
4296 if (use_json) {
4297 vty_out(vty, "%s\n", json_object_to_json_string_ext(
4298 json, JSON_C_TO_STRING_PRETTY));
4299 json_object_free(json);
4300 }
4301 }
4302
4303 /*
4304 * Display specific neighbor for a VNI, if present (VTY command handler).
4305 */
4306 void zebra_vxlan_print_specific_neigh_vni(struct vty *vty,
4307 struct zebra_vrf *zvrf, vni_t vni,
4308 struct ipaddr *ip, u_char use_json)
4309 {
4310 zebra_vni_t *zvni;
4311 zebra_neigh_t *n;
4312 json_object *json = NULL;
4313
4314 if (!is_evpn_enabled())
4315 return;
4316 zvni = zvni_lookup(vni);
4317 if (!zvni) {
4318 if (use_json)
4319 vty_out(vty, "{}\n");
4320 else
4321 vty_out(vty, "%% VNI %u does not exist\n", vni);
4322 return;
4323 }
4324 n = zvni_neigh_lookup(zvni, ip);
4325 if (!n) {
4326 if (!use_json)
4327 vty_out(vty,
4328 "%% Requested neighbor does not exist in VNI %u\n",
4329 vni);
4330 return;
4331 }
4332 if (use_json)
4333 json = json_object_new_object();
4334
4335 zvni_print_neigh(n, vty, json);
4336
4337 if (use_json) {
4338 vty_out(vty, "%s\n", json_object_to_json_string_ext(
4339 json, JSON_C_TO_STRING_PRETTY));
4340 json_object_free(json);
4341 }
4342 }
4343
4344 /*
4345 * Display neighbors for a VNI from specific VTEP (VTY command handler).
4346 * By definition, these are remote neighbors.
4347 */
4348 void zebra_vxlan_print_neigh_vni_vtep(struct vty *vty, struct zebra_vrf *zvrf,
4349 vni_t vni, struct in_addr vtep_ip,
4350 u_char use_json)
4351 {
4352 zebra_vni_t *zvni;
4353 u_int32_t num_neigh;
4354 struct neigh_walk_ctx wctx;
4355 json_object *json = NULL;
4356
4357 if (!is_evpn_enabled())
4358 return;
4359 zvni = zvni_lookup(vni);
4360 if (!zvni) {
4361 if (use_json)
4362 vty_out(vty, "{}\n");
4363 else
4364 vty_out(vty, "%% VNI %u does not exist\n", vni);
4365 return;
4366 }
4367 num_neigh = hashcount(zvni->neigh_table);
4368 if (!num_neigh)
4369 return;
4370
4371 memset(&wctx, 0, sizeof(struct neigh_walk_ctx));
4372 wctx.zvni = zvni;
4373 wctx.vty = vty;
4374 wctx.flags = SHOW_REMOTE_NEIGH_FROM_VTEP;
4375 wctx.r_vtep_ip = vtep_ip;
4376 wctx.json = json;
4377 hash_iterate(zvni->neigh_table, zvni_print_neigh_hash, &wctx);
4378
4379 if (use_json) {
4380 vty_out(vty, "%s\n", json_object_to_json_string_ext(
4381 json, JSON_C_TO_STRING_PRETTY));
4382 json_object_free(json);
4383 }
4384 }
4385
4386 /*
4387 * Display MACs for a VNI (VTY command handler).
4388 */
4389 void zebra_vxlan_print_macs_vni(struct vty *vty, struct zebra_vrf *zvrf,
4390 vni_t vni, u_char use_json)
4391 {
4392 zebra_vni_t *zvni;
4393 u_int32_t num_macs;
4394 struct mac_walk_ctx wctx;
4395 json_object *json = NULL;
4396 json_object *json_mac = NULL;
4397
4398 if (!is_evpn_enabled())
4399 return;
4400 zvni = zvni_lookup(vni);
4401 if (!zvni) {
4402 if (use_json)
4403 vty_out(vty, "{}\n");
4404 else
4405 vty_out(vty, "%% VNI %u does not exist\n", vni);
4406 return;
4407 }
4408 num_macs = num_valid_macs(zvni);
4409 if (!num_macs)
4410 return;
4411
4412 if (use_json) {
4413 json = json_object_new_object();
4414 json_mac = json_object_new_object();
4415 }
4416
4417 memset(&wctx, 0, sizeof(struct mac_walk_ctx));
4418 wctx.zvni = zvni;
4419 wctx.vty = vty;
4420 wctx.json = json_mac;
4421
4422 if (!use_json) {
4423 vty_out(vty,
4424 "Number of MACs (local and remote) known for this VNI: %u\n",
4425 num_macs);
4426 vty_out(vty, "%-17s %-6s %-21s %-5s\n", "MAC", "Type",
4427 "Intf/Remote VTEP", "VLAN");
4428 } else
4429 json_object_int_add(json, "numMacs", num_macs);
4430
4431 hash_iterate(zvni->mac_table, zvni_print_mac_hash, &wctx);
4432
4433 if (use_json) {
4434 json_object_object_add(json, "macs", json_mac);
4435 vty_out(vty, "%s\n", json_object_to_json_string_ext(
4436 json, JSON_C_TO_STRING_PRETTY));
4437 json_object_free(json);
4438 }
4439 }
4440
4441 /*
4442 * Display MACs for all VNIs (VTY command handler).
4443 */
4444 void zebra_vxlan_print_macs_all_vni(struct vty *vty, struct zebra_vrf *zvrf,
4445 u_char use_json)
4446 {
4447 struct mac_walk_ctx wctx;
4448 json_object *json = NULL;
4449
4450 if (!is_evpn_enabled()) {
4451 if (use_json)
4452 vty_out(vty, "{}\n");
4453 return;
4454 }
4455 if (use_json)
4456 json = json_object_new_object();
4457
4458 memset(&wctx, 0, sizeof(struct mac_walk_ctx));
4459 wctx.vty = vty;
4460 wctx.json = json;
4461 hash_iterate(zvrf->vni_table, zvni_print_mac_hash_all_vni, &wctx);
4462
4463 if (use_json) {
4464 vty_out(vty, "%s\n", json_object_to_json_string_ext(
4465 json, JSON_C_TO_STRING_PRETTY));
4466 json_object_free(json);
4467 }
4468 }
4469
4470 /*
4471 * Display MACs for all VNIs (VTY command handler).
4472 */
4473 void zebra_vxlan_print_macs_all_vni_vtep(struct vty *vty,
4474 struct zebra_vrf *zvrf,
4475 struct in_addr vtep_ip,
4476 u_char use_json)
4477 {
4478 struct mac_walk_ctx wctx;
4479 json_object *json = NULL;
4480
4481 if (!is_evpn_enabled())
4482 return;
4483
4484 if (use_json)
4485 json = json_object_new_object();
4486
4487 memset(&wctx, 0, sizeof(struct mac_walk_ctx));
4488 wctx.vty = vty;
4489 wctx.flags = SHOW_REMOTE_MAC_FROM_VTEP;
4490 wctx.r_vtep_ip = vtep_ip;
4491 wctx.json = json;
4492 hash_iterate(zvrf->vni_table, zvni_print_mac_hash_all_vni, &wctx);
4493
4494 if (use_json) {
4495 vty_out(vty, "%s\n", json_object_to_json_string_ext(
4496 json, JSON_C_TO_STRING_PRETTY));
4497 json_object_free(json);
4498 }
4499 }
4500
4501 /*
4502 * Display specific MAC for a VNI, if present (VTY command handler).
4503 */
4504 void zebra_vxlan_print_specific_mac_vni(struct vty *vty, struct zebra_vrf *zvrf,
4505 vni_t vni, struct ethaddr *macaddr)
4506 {
4507 zebra_vni_t *zvni;
4508 zebra_mac_t *mac;
4509
4510 if (!is_evpn_enabled())
4511 return;
4512 zvni = zvni_lookup(vni);
4513 if (!zvni) {
4514 vty_out(vty, "%% VNI %u does not exist\n", vni);
4515 return;
4516 }
4517 mac = zvni_mac_lookup(zvni, macaddr);
4518 if (!mac) {
4519 vty_out(vty, "%% Requested MAC does not exist in VNI %u\n",
4520 vni);
4521 return;
4522 }
4523
4524 zvni_print_mac(mac, vty);
4525 }
4526
4527 /*
4528 * Display MACs for a VNI from specific VTEP (VTY command handler).
4529 */
4530 void zebra_vxlan_print_macs_vni_vtep(struct vty *vty, struct zebra_vrf *zvrf,
4531 vni_t vni, struct in_addr vtep_ip,
4532 u_char use_json)
4533 {
4534 zebra_vni_t *zvni;
4535 u_int32_t num_macs;
4536 struct mac_walk_ctx wctx;
4537 json_object *json = NULL;
4538 json_object *json_mac = NULL;
4539
4540 if (!is_evpn_enabled())
4541 return;
4542 zvni = zvni_lookup(vni);
4543 if (!zvni) {
4544 if (use_json)
4545 vty_out(vty, "{}\n");
4546 else
4547 vty_out(vty, "%% VNI %u does not exist\n", vni);
4548 return;
4549 }
4550 num_macs = num_valid_macs(zvni);
4551 if (!num_macs)
4552 return;
4553
4554 if (use_json) {
4555 json = json_object_new_object();
4556 json_mac = json_object_new_object();
4557 }
4558
4559 memset(&wctx, 0, sizeof(struct mac_walk_ctx));
4560 wctx.zvni = zvni;
4561 wctx.vty = vty;
4562 wctx.flags = SHOW_REMOTE_MAC_FROM_VTEP;
4563 wctx.r_vtep_ip = vtep_ip;
4564 wctx.json = json_mac;
4565 hash_iterate(zvni->mac_table, zvni_print_mac_hash, &wctx);
4566
4567 if (use_json) {
4568 json_object_int_add(json, "numMacs", wctx.count);
4569 if (wctx.count)
4570 json_object_object_add(json, "macs", json_mac);
4571 vty_out(vty, "%s\n", json_object_to_json_string_ext(
4572 json, JSON_C_TO_STRING_PRETTY));
4573 json_object_free(json);
4574 }
4575 }
4576
4577
4578 /*
4579 * Display VNI information (VTY command handler).
4580 */
4581 void zebra_vxlan_print_vni(struct vty *vty, struct zebra_vrf *zvrf, vni_t vni,
4582 u_char use_json)
4583 {
4584 json_object *json = NULL;
4585 void *args[2];
4586
4587 if (!is_evpn_enabled())
4588 return;
4589
4590 if (use_json)
4591 json = json_object_new_object();
4592 args[0] = vty;
4593 args[1] = json;
4594
4595 if (is_vni_l3(vni)) {
4596 zebra_l3vni_t *zl3vni = NULL;
4597
4598 zl3vni = zl3vni_lookup(vni);
4599 if (!zl3vni) {
4600 if (use_json)
4601 vty_out(vty, "{}\n");
4602 else
4603 vty_out(vty, "%% VNI %u does not exist\n", vni);
4604 return;
4605 }
4606
4607 zl3vni_print(zl3vni, (void *)args);
4608 } else {
4609 zebra_vni_t *zvni;
4610
4611 zvni = zvni_lookup(vni);
4612 if (!zvni) {
4613 if (use_json)
4614 vty_out(vty, "{}\n");
4615 else
4616 vty_out(vty, "%% VNI %u does not exist\n", vni);
4617 return;
4618 }
4619
4620 zvni_print(zvni, (void *)args);
4621 }
4622
4623 if (use_json) {
4624 vty_out(vty, "%s\n", json_object_to_json_string_ext(
4625 json, JSON_C_TO_STRING_PRETTY));
4626 json_object_free(json);
4627 }
4628 }
4629
4630 /* Display all global details for EVPN */
4631 void zebra_vxlan_print_evpn(struct vty *vty, u_char uj)
4632 {
4633 int num_l2vnis = 0;
4634 int num_l3vnis = 0;
4635 json_object *json = NULL;
4636 struct zebra_ns *zns = NULL;
4637 struct zebra_vrf *zvrf = NULL;
4638
4639 if (!is_evpn_enabled())
4640 return;
4641
4642 zns = zebra_ns_lookup(NS_DEFAULT);
4643 if (!zns)
4644 return;
4645
4646 zvrf = vrf_info_lookup(VRF_DEFAULT);
4647 if (!zvrf)
4648 return;
4649
4650 num_l3vnis = hashcount(zns->l3vni_table);
4651 num_l2vnis = hashcount(zvrf->vni_table);
4652
4653 if (uj) {
4654 json = json_object_new_object();
4655 json_object_string_add(json, "advertiseGatewayMacip",
4656 zvrf->advertise_gw_macip ? "Yes" : "No");
4657 json_object_int_add(json, "numL2Vnis", num_l2vnis);
4658 json_object_int_add(json, "numL3Vnis", num_l3vnis);
4659 } else {
4660 vty_out(vty, "L2 VNIs: %u\n", num_l2vnis);
4661 vty_out(vty, "L3 VNIs: %u\n", num_l3vnis);
4662 vty_out(vty, "Advertise gateway mac-ip: %s\n",
4663 zvrf->advertise_gw_macip ? "Yes" : "No");
4664 }
4665
4666 if (uj) {
4667 vty_out(vty, "%s\n", json_object_to_json_string_ext(
4668 json, JSON_C_TO_STRING_PRETTY));
4669 json_object_free(json);
4670 }
4671 }
4672
4673 /*
4674 * Display VNI hash table (VTY command handler).
4675 */
4676 void zebra_vxlan_print_vnis(struct vty *vty, struct zebra_vrf *zvrf,
4677 u_char use_json)
4678 {
4679 json_object *json = NULL;
4680 struct zebra_ns *zns = NULL;
4681 void *args[2];
4682
4683 if (!is_evpn_enabled())
4684 return;
4685
4686 zns = zebra_ns_lookup(NS_DEFAULT);
4687 if (!zns)
4688 return;
4689
4690
4691 if (use_json)
4692 json = json_object_new_object();
4693 else
4694 vty_out(vty,
4695 "%-10s %-4s %-21s %-8s %-8s %-15s %-37s\n",
4696 "VNI", "Type", "VxLAN IF", "# MACs",
4697 "# ARPs", "# Remote VTEPs", "Tenant VRF");
4698
4699 args[0] = vty;
4700 args[1] = json;
4701
4702 /* Display all L2-VNIs */
4703 hash_iterate(zvrf->vni_table,
4704 (void (*)(struct hash_backet *, void *))zvni_print_hash,
4705 args);
4706
4707 /* Display all L3-VNIs */
4708 hash_iterate(zns->l3vni_table,
4709 (void (*)(struct hash_backet *, void *))zl3vni_print_hash,
4710 args);
4711
4712 if (use_json) {
4713 vty_out(vty, "%s\n", json_object_to_json_string_ext(
4714 json, JSON_C_TO_STRING_PRETTY));
4715 json_object_free(json);
4716 }
4717 }
4718
4719 /*
4720 * Handle neighbor delete (on a VLAN device / L3 interface) from the
4721 * kernel. This may result in either the neighbor getting deleted from
4722 * our database or being re-added to the kernel (if it is a valid
4723 * remote neighbor).
4724 */
4725 int zebra_vxlan_local_neigh_del(struct interface *ifp,
4726 struct interface *link_if, struct ipaddr *ip)
4727 {
4728 char buf[INET6_ADDRSTRLEN];
4729 char buf2[ETHER_ADDR_STRLEN];
4730 zebra_neigh_t *n = NULL;
4731 zebra_vni_t *zvni = NULL;
4732 zebra_mac_t *zmac = NULL;
4733 zebra_l3vni_t *zl3vni = NULL;
4734
4735 /* check if this is a remote neigh entry corresponding to remote
4736 * next-hop
4737 */
4738 zl3vni = zl3vni_from_svi(ifp, link_if);
4739 if (zl3vni)
4740 return zl3vni_local_nh_del(zl3vni, ip);
4741
4742 /* We are only interested in neighbors on an SVI that resides on top
4743 * of a VxLAN bridge.
4744 */
4745 zvni = zvni_from_svi(ifp, link_if);
4746 if (!zvni)
4747 return 0;
4748
4749 if (!zvni->vxlan_if) {
4750 zlog_err(
4751 "VNI %u hash %p doesn't have intf upon local neighbor DEL",
4752 zvni->vni, zvni);
4753 return -1;
4754 }
4755
4756 if (IS_ZEBRA_DEBUG_VXLAN)
4757 zlog_debug("Del neighbor %s intf %s(%u) -> L2-VNI %u",
4758 ipaddr2str(ip, buf, sizeof(buf)),
4759 ifp->name, ifp->ifindex, zvni->vni);
4760
4761 /* If entry doesn't exist, nothing to do. */
4762 n = zvni_neigh_lookup(zvni, ip);
4763 if (!n)
4764 return 0;
4765
4766 zmac = zvni_mac_lookup(zvni, &n->emac);
4767 if (!zmac) {
4768 if (IS_ZEBRA_DEBUG_VXLAN)
4769 zlog_err(
4770 "Trying to del a neigh %s without a mac %s on VNI %u",
4771 ipaddr2str(ip, buf, sizeof(buf)),
4772 prefix_mac2str(&n->emac, buf2, sizeof(buf2)),
4773 zvni->vni);
4774
4775 return 0;
4776 }
4777
4778 /* If it is a remote entry, the kernel has aged this out or someone has
4779 * deleted it, it needs to be re-installed as Quagga is the owner.
4780 */
4781 if (CHECK_FLAG(n->flags, ZEBRA_NEIGH_REMOTE)) {
4782 zvni_neigh_install(zvni, n);
4783 return 0;
4784 }
4785
4786 /* Remove neighbor from BGP. */
4787 if (IS_ZEBRA_NEIGH_ACTIVE(n))
4788 zvni_neigh_send_del_to_client(zvni->vni, &n->ip, &n->emac,
4789 0);
4790
4791 /* Delete this neighbor entry. */
4792 zvni_neigh_del(zvni, n);
4793
4794 /* see if the AUTO mac needs to be deleted */
4795 if (CHECK_FLAG(zmac->flags, ZEBRA_MAC_AUTO)
4796 && !listcount(zmac->neigh_list))
4797 zvni_mac_del(zvni, zmac);
4798
4799 return 0;
4800 }
4801
4802 /*
4803 * Handle neighbor add or update (on a VLAN device / L3 interface)
4804 * from the kernel.
4805 */
4806 int zebra_vxlan_local_neigh_add_update(struct interface *ifp,
4807 struct interface *link_if,
4808 struct ipaddr *ip,
4809 struct ethaddr *macaddr, u_int16_t state,
4810 u_char ext_learned)
4811 {
4812 char buf[ETHER_ADDR_STRLEN];
4813 char buf2[INET6_ADDRSTRLEN];
4814 zebra_vni_t *zvni = NULL;
4815 zebra_neigh_t *n = NULL;
4816 zebra_mac_t *zmac = NULL, *old_zmac = NULL;
4817 zebra_l3vni_t *zl3vni = NULL;
4818
4819 /* check if this is a remote neigh entry corresponding to remote
4820 * next-hop
4821 */
4822 zl3vni = zl3vni_from_svi(ifp, link_if);
4823 if (zl3vni)
4824 return zl3vni_local_nh_add_update(zl3vni, ip, state);
4825
4826 /* We are only interested in neighbors on an SVI that resides on top
4827 * of a VxLAN bridge.
4828 */
4829 zvni = zvni_from_svi(ifp, link_if);
4830 if (!zvni)
4831 return 0;
4832
4833 if (IS_ZEBRA_DEBUG_VXLAN)
4834 zlog_debug(
4835 "Add/Update neighbor %s MAC %s intf %s(%u) state 0x%x %s-> L2-VNI %u",
4836 ipaddr2str(ip, buf2, sizeof(buf2)),
4837 prefix_mac2str(macaddr, buf, sizeof(buf)), ifp->name,
4838 ifp->ifindex, state, ext_learned ? "ext-learned " : "",
4839 zvni->vni);
4840
4841 /* create a dummy MAC if the MAC is not already present */
4842 zmac = zvni_mac_lookup(zvni, macaddr);
4843 if (!zmac) {
4844 if (IS_ZEBRA_DEBUG_VXLAN)
4845 zlog_debug(
4846 "AUTO MAC %s created for neigh %s on VNI %u",
4847 prefix_mac2str(macaddr, buf, sizeof(buf)),
4848 ipaddr2str(ip, buf2, sizeof(buf2)), zvni->vni);
4849
4850 zmac = zvni_mac_add(zvni, macaddr);
4851 if (!zmac) {
4852 zlog_warn("Failed to add MAC %s VNI %u",
4853 prefix_mac2str(macaddr, buf, sizeof(buf)),
4854 zvni->vni);
4855 return -1;
4856 }
4857
4858 memset(&zmac->fwd_info, 0, sizeof(zmac->fwd_info));
4859 memset(&zmac->flags, 0, sizeof(u_int32_t));
4860 SET_FLAG(zmac->flags, ZEBRA_MAC_AUTO);
4861 }
4862
4863 /* If same entry already exists, it might be a change or it might be a
4864 * move from remote to local.
4865 */
4866 n = zvni_neigh_lookup(zvni, ip);
4867 if (n) {
4868 if (CHECK_FLAG(n->flags, ZEBRA_NEIGH_LOCAL)) {
4869 if (memcmp(n->emac.octet, macaddr->octet,
4870 ETH_ALEN)
4871 == 0) {
4872 /* Update any params and return - client doesn't
4873 * care about a purely local change.
4874 */
4875 n->ifindex = ifp->ifindex;
4876 return 0;
4877 }
4878
4879 /* If the MAC has changed,
4880 * need to issue a delete first
4881 * as this means a different MACIP route.
4882 * Also, need to do some unlinking/relinking.
4883 */
4884 zvni_neigh_send_del_to_client(zvni->vni, &n->ip,
4885 &n->emac, 0);
4886 old_zmac = zvni_mac_lookup(zvni, &n->emac);
4887 if (old_zmac) {
4888 listnode_delete(old_zmac->neigh_list, n);
4889 zvni_deref_ip2mac(zvni, old_zmac, 0);
4890 }
4891
4892 /* Set "local" forwarding info. */
4893 SET_FLAG(n->flags, ZEBRA_NEIGH_LOCAL);
4894 n->ifindex = ifp->ifindex;
4895 memcpy(&n->emac, macaddr, ETH_ALEN);
4896
4897 /* Link to new MAC */
4898 listnode_add_sort(zmac->neigh_list, n);
4899 } else if (ext_learned)
4900 /* The neighbor is remote and that is the notification we got.
4901 */
4902 {
4903 /* TODO: Evaluate if we need to do anything here. */
4904 return 0;
4905 } else
4906 /* Neighbor has moved from remote to local. */
4907 {
4908 UNSET_FLAG(n->flags, ZEBRA_NEIGH_REMOTE);
4909 n->r_vtep_ip.s_addr = 0;
4910 SET_FLAG(n->flags, ZEBRA_NEIGH_LOCAL);
4911 n->ifindex = ifp->ifindex;
4912 }
4913 } else {
4914 n = zvni_neigh_add(zvni, ip, macaddr);
4915 if (!n) {
4916 zlog_err(
4917 "Failed to add neighbor %s MAC %s intf %s(%u) -> VNI %u",
4918 ipaddr2str(ip, buf2, sizeof(buf2)),
4919 prefix_mac2str(macaddr, buf, sizeof(buf)),
4920 ifp->name, ifp->ifindex, zvni->vni);
4921 return -1;
4922 }
4923 /* Set "local" forwarding info. */
4924 SET_FLAG(n->flags, ZEBRA_NEIGH_LOCAL);
4925 n->ifindex = ifp->ifindex;
4926 }
4927
4928 /* Before we program this in BGP, we need to check if MAC is locally
4929 * learnt as well */
4930 if (!CHECK_FLAG(zmac->flags, ZEBRA_MAC_LOCAL)) {
4931 if (IS_ZEBRA_DEBUG_VXLAN)
4932 zlog_debug(
4933 "Skipping neigh %s add to client as MAC %s is not local on VNI %u",
4934 ipaddr2str(ip, buf2, sizeof(buf2)),
4935 prefix_mac2str(macaddr, buf, sizeof(buf)),
4936 zvni->vni);
4937
4938 return 0;
4939 }
4940
4941 /* Inform BGP. */
4942 if (IS_ZEBRA_DEBUG_VXLAN)
4943 zlog_debug("neigh %s (MAC %s) is now ACTIVE on L2-VNI %u",
4944 ipaddr2str(ip, buf2, sizeof(buf2)),
4945 prefix_mac2str(macaddr, buf, sizeof(buf)),
4946 zvni->vni);
4947 ZEBRA_NEIGH_SET_ACTIVE(n);
4948
4949 return zvni_neigh_send_add_to_client(zvni->vni, ip, macaddr, n->flags);
4950 }
4951
4952
4953 /*
4954 * Handle message from client to delete a remote MACIP for a VNI.
4955 */
4956 int zebra_vxlan_remote_macip_del(struct zserv *client, u_short length,
4957 struct zebra_vrf *zvrf)
4958 {
4959 struct stream *s;
4960 vni_t vni;
4961 struct ethaddr macaddr;
4962 struct ipaddr ip;
4963 struct in_addr vtep_ip;
4964 zebra_vni_t *zvni;
4965 zebra_mac_t *mac;
4966 zebra_neigh_t *n;
4967 u_short l = 0, ipa_len;
4968 char buf[ETHER_ADDR_STRLEN];
4969 char buf1[INET6_ADDRSTRLEN];
4970 struct interface *ifp = NULL;
4971 struct zebra_if *zif = NULL;
4972
4973 memset(&macaddr, 0, sizeof(struct ethaddr));
4974 memset(&ip, 0, sizeof(struct ipaddr));
4975 memset(&vtep_ip, 0, sizeof(struct in_addr));
4976
4977 s = client->ibuf;
4978
4979 while (l < length) {
4980 /* Obtain each remote MACIP and process. */
4981 /* Message contains VNI, followed by MAC followed by IP (if any)
4982 * followed by remote VTEP IP.
4983 */
4984 mac = NULL;
4985 n = NULL;
4986 memset(&ip, 0, sizeof(ip));
4987 STREAM_GETL(s, vni);
4988 STREAM_GET(&macaddr.octet, s, ETH_ALEN);
4989 STREAM_GETL(s, ipa_len);
4990 if (ipa_len) {
4991 ip.ipa_type = (ipa_len == IPV4_MAX_BYTELEN) ? IPADDR_V4
4992 : IPADDR_V6;
4993 STREAM_GET(&ip.ip.addr, s, ipa_len);
4994 }
4995 l += 4 + ETH_ALEN + 4 + ipa_len;
4996 STREAM_GET(&vtep_ip.s_addr, s, IPV4_MAX_BYTELEN);
4997 l += IPV4_MAX_BYTELEN;
4998
4999 if (IS_ZEBRA_DEBUG_VXLAN)
5000 zlog_debug(
5001 "Recv MACIP Del MAC %s IP %s VNI %u Remote VTEP %s from %s",
5002 prefix_mac2str(&macaddr, buf, sizeof(buf)),
5003 ipaddr2str(&ip, buf1, sizeof(buf1)), vni,
5004 inet_ntoa(vtep_ip),
5005 zebra_route_string(client->proto));
5006
5007 /* Locate VNI hash entry - expected to exist. */
5008 zvni = zvni_lookup(vni);
5009 if (!zvni) {
5010 if (IS_ZEBRA_DEBUG_VXLAN)
5011 zlog_debug(
5012 "Failed to locate VNI hash upon remote MACIP DEL, "
5013 "VNI %u",
5014 vni);
5015 continue;
5016 }
5017 ifp = zvni->vxlan_if;
5018 if (!ifp) {
5019 zlog_err(
5020 "VNI %u hash %p doesn't have intf upon remote MACIP DEL",
5021 vni, zvni);
5022 continue;
5023 }
5024 zif = ifp->info;
5025
5026 /* If down or not mapped to a bridge, we're done. */
5027 if (!if_is_operative(ifp) || !zif->brslave_info.br_if)
5028 continue;
5029
5030 /* The remote VTEP specified is normally expected to exist, but
5031 * it is
5032 * possible that the peer may delete the VTEP before deleting
5033 * any MACs
5034 * referring to the VTEP, in which case the handler (see
5035 * remote_vtep_del)
5036 * would have already deleted the MACs.
5037 */
5038 if (!zvni_vtep_find(zvni, &vtep_ip))
5039 continue;
5040
5041 mac = zvni_mac_lookup(zvni, &macaddr);
5042 if (ipa_len)
5043 n = zvni_neigh_lookup(zvni, &ip);
5044
5045 if (n && !mac) {
5046 zlog_err(
5047 "Failed to locate MAC %s for neigh %s VNI %u",
5048 prefix_mac2str(&macaddr, buf, sizeof(buf)),
5049 ipaddr2str(&ip, buf1, sizeof(buf1)), vni);
5050 continue;
5051 }
5052
5053 /* If the remote mac or neighbor doesn't exist there is nothing
5054 * more
5055 * to do. Otherwise, uninstall the entry and then remove it.
5056 */
5057 if (!mac && !n)
5058 continue;
5059
5060 /* Ignore the delete if this mac is a gateway mac-ip */
5061 if (mac && CHECK_FLAG(mac->flags, ZEBRA_MAC_LOCAL) &&
5062 CHECK_FLAG(mac->flags, ZEBRA_MAC_DEF_GW)) {
5063 zlog_err("%u: Ignore Del for MAC %s neigh %s on VNI %u as it is configured as a default gateway",
5064 zvrf_id(zvrf),
5065 prefix_mac2str(&macaddr, buf, sizeof(buf)),
5066 ipaddr2str(&ip, buf1, sizeof(buf1)),
5067 vni);
5068 continue;
5069 }
5070
5071 /* Uninstall remote neighbor or MAC. */
5072 if (n) {
5073 /* When the MAC changes for an IP, it is possible the
5074 * client may
5075 * update the new MAC before trying to delete the "old"
5076 * neighbor
5077 * (as these are two different MACIP routes). Do the
5078 * delete only
5079 * if the MAC matches.
5080 */
5081 if (CHECK_FLAG(n->flags, ZEBRA_NEIGH_REMOTE)
5082 && (memcmp(n->emac.octet, macaddr.octet,
5083 ETH_ALEN)
5084 == 0)) {
5085 zvni_neigh_uninstall(zvni, n);
5086 zvni_neigh_del(zvni, n);
5087 zvni_deref_ip2mac(zvni, mac, 1);
5088 }
5089 } else {
5090 if (CHECK_FLAG(mac->flags, ZEBRA_MAC_REMOTE)) {
5091 zvni_process_neigh_on_remote_mac_del(zvni,
5092 mac);
5093
5094 if (list_isempty(mac->neigh_list)) {
5095 zvni_mac_uninstall(zvni, mac, 0);
5096 zvni_mac_del(zvni, mac);
5097 } else
5098 SET_FLAG(mac->flags, ZEBRA_MAC_AUTO);
5099 }
5100 }
5101 }
5102
5103 stream_failure:
5104 return 0;
5105 }
5106
5107 /*
5108 * Handle message from client to add a remote MACIP for a VNI. This
5109 * could be just the add of a MAC address or the add of a neighbor
5110 * (IP+MAC).
5111 */
5112 int zebra_vxlan_remote_macip_add(struct zserv *client, u_short length,
5113 struct zebra_vrf *zvrf)
5114 {
5115 struct stream *s;
5116 vni_t vni;
5117 struct ethaddr macaddr;
5118 struct ipaddr ip;
5119 struct in_addr vtep_ip;
5120 zebra_vni_t *zvni;
5121 zebra_vtep_t *zvtep;
5122 zebra_mac_t *mac, *old_mac;
5123 zebra_neigh_t *n;
5124 u_short l = 0, ipa_len;
5125 int update_mac = 0, update_neigh = 0;
5126 char buf[ETHER_ADDR_STRLEN];
5127 char buf1[INET6_ADDRSTRLEN];
5128 u_char sticky = 0;
5129 u_char flags = 0;
5130 struct interface *ifp = NULL;
5131 struct zebra_if *zif = NULL;
5132
5133 memset(&macaddr, 0, sizeof(struct ethaddr));
5134 memset(&ip, 0, sizeof(struct ipaddr));
5135 memset(&vtep_ip, 0, sizeof(struct in_addr));
5136
5137 if (!EVPN_ENABLED(zvrf)) {
5138 zlog_warn("%s: EVPN Not turned on yet we have received a remote_macip add zapi callback",
5139 __PRETTY_FUNCTION__);
5140 return -1;
5141 }
5142
5143 s = client->ibuf;
5144
5145 while (l < length) {
5146 /* Obtain each remote MACIP and process. */
5147 /* Message contains VNI, followed by MAC followed by IP (if any)
5148 * followed by remote VTEP IP.
5149 */
5150 update_mac = update_neigh = 0;
5151 mac = NULL;
5152 n = NULL;
5153 memset(&ip, 0, sizeof(ip));
5154 STREAM_GETL(s, vni);
5155 STREAM_GET(&macaddr.octet, s, ETH_ALEN);
5156 STREAM_GETL(s, ipa_len);
5157 if (ipa_len) {
5158 ip.ipa_type = (ipa_len == IPV4_MAX_BYTELEN) ? IPADDR_V4
5159 : IPADDR_V6;
5160 STREAM_GET(&ip.ip.addr, s, ipa_len);
5161 }
5162 l += 4 + ETH_ALEN + 4 + ipa_len;
5163 STREAM_GET(&vtep_ip.s_addr, s, IPV4_MAX_BYTELEN);
5164 l += IPV4_MAX_BYTELEN;
5165
5166 /* Get flags - sticky mac and/or gateway mac */
5167 flags = stream_getc(s);
5168 sticky = CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_STICKY);
5169 l++;
5170
5171 if (IS_ZEBRA_DEBUG_VXLAN)
5172 zlog_debug(
5173 "Recv MACIP Add MAC %s IP %s VNI %u Remote VTEP %s with flags 0x%x from %s",
5174 prefix_mac2str(&macaddr, buf, sizeof(buf)),
5175 ipaddr2str(&ip, buf1, sizeof(buf1)), vni,
5176 inet_ntoa(vtep_ip), flags,
5177 zebra_route_string(client->proto));
5178
5179 /* Locate VNI hash entry - expected to exist. */
5180 zvni = zvni_lookup(vni);
5181 if (!zvni) {
5182 zlog_err(
5183 "Failed to locate VNI hash upon remote MACIP ADD, VNI %u",
5184 vni);
5185 continue;
5186 }
5187 ifp = zvni->vxlan_if;
5188 if (!ifp) {
5189 zlog_err(
5190 "VNI %u hash %p doesn't have intf upon remote MACIP add",
5191 vni, zvni);
5192 continue;
5193 }
5194 zif = ifp->info;
5195
5196 /* If down or not mapped to a bridge, we're done. */
5197 if (!if_is_operative(ifp) || !zif->brslave_info.br_if)
5198 continue;
5199
5200 /* The remote VTEP specified should normally exist, but it is
5201 * possible
5202 * that when peering comes up, peer may advertise MACIP routes
5203 * before
5204 * advertising type-3 routes.
5205 */
5206 zvtep = zvni_vtep_find(zvni, &vtep_ip);
5207 if (!zvtep) {
5208 if (zvni_vtep_add(zvni, &vtep_ip) == NULL) {
5209 zlog_err(
5210 "Failed to add remote VTEP, VNI %u zvni %p",
5211 vni, zvni);
5212 continue;
5213 }
5214
5215 zvni_vtep_install(zvni, &vtep_ip);
5216 }
5217
5218 mac = zvni_mac_lookup(zvni, &macaddr);
5219
5220 /* Ignore the update if the mac is already present
5221 as a gateway mac */
5222 if (mac && CHECK_FLAG(mac->flags, ZEBRA_MAC_DEF_GW) &&
5223 CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_GW)) {
5224 if (IS_ZEBRA_DEBUG_VXLAN)
5225 zlog_debug("%u:Ignore MAC %s IP %s on VNI %u as MAC is already configured as gateway mac",
5226 zvrf_id(zvrf),
5227 prefix_mac2str(&macaddr,
5228 buf, sizeof(buf)),
5229 ipaddr2str(&ip, buf1,
5230 sizeof(buf1)), vni);
5231 continue;
5232 }
5233
5234 /* check if the remote MAC is unknown or has a change.
5235 * If so, that needs to be updated first. Note that client could
5236 * install MAC and MACIP separately or just install the latter.
5237 */
5238 if (!mac || !CHECK_FLAG(mac->flags, ZEBRA_MAC_REMOTE)
5239 || (CHECK_FLAG(mac->flags, ZEBRA_MAC_STICKY) ? 1 : 0)
5240 != sticky
5241 || !IPV4_ADDR_SAME(&mac->fwd_info.r_vtep_ip, &vtep_ip))
5242 update_mac = 1;
5243
5244 if (update_mac) {
5245 if (!mac) {
5246 mac = zvni_mac_add(zvni, &macaddr);
5247 if (!mac) {
5248 zlog_warn(
5249 "Failed to add MAC %s VNI %u Remote VTEP %s",
5250 prefix_mac2str(&macaddr, buf,
5251 sizeof(buf)),
5252 vni, inet_ntoa(vtep_ip));
5253 return -1;
5254 }
5255
5256 /* Is this MAC created for a MACIP? */
5257 if (ipa_len)
5258 SET_FLAG(mac->flags, ZEBRA_MAC_AUTO);
5259 }
5260
5261 /* Set "auto" and "remote" forwarding info. */
5262 UNSET_FLAG(mac->flags, ZEBRA_MAC_LOCAL);
5263 memset(&mac->fwd_info, 0, sizeof(mac->fwd_info));
5264 SET_FLAG(mac->flags, ZEBRA_MAC_REMOTE);
5265 mac->fwd_info.r_vtep_ip = vtep_ip;
5266
5267 if (sticky)
5268 SET_FLAG(mac->flags, ZEBRA_MAC_STICKY);
5269 else
5270 UNSET_FLAG(mac->flags, ZEBRA_MAC_STICKY);
5271
5272 zvni_process_neigh_on_remote_mac_add(zvni, mac);
5273
5274 /* Install the entry. */
5275 zvni_mac_install(zvni, mac);
5276 }
5277
5278 /* If there is no IP, continue - after clearing AUTO flag of
5279 * MAC. */
5280 if (!ipa_len) {
5281 UNSET_FLAG(mac->flags, ZEBRA_MAC_AUTO);
5282 continue;
5283 }
5284
5285 /* Check if the remote neighbor itself is unknown or has a
5286 * change.
5287 * If so, create or update and then install the entry.
5288 */
5289 n = zvni_neigh_lookup(zvni, &ip);
5290 if (!n || !CHECK_FLAG(n->flags, ZEBRA_NEIGH_REMOTE)
5291 || (memcmp(&n->emac, &macaddr, sizeof(macaddr)) != 0)
5292 || !IPV4_ADDR_SAME(&n->r_vtep_ip, &vtep_ip))
5293 update_neigh = 1;
5294
5295 if (update_neigh) {
5296 if (!n) {
5297 n = zvni_neigh_add(zvni, &ip, &macaddr);
5298 if (!n) {
5299 zlog_warn(
5300 "Failed to add Neigh %s MAC %s VNI %u Remote VTEP %s",
5301 ipaddr2str(&ip, buf1,
5302 sizeof(buf1)),
5303 prefix_mac2str(&macaddr, buf,
5304 sizeof(buf)),
5305 vni, inet_ntoa(vtep_ip));
5306 return -1;
5307 }
5308
5309 } else if (memcmp(&n->emac, &macaddr, sizeof(macaddr))
5310 != 0) {
5311 /* MAC change, update neigh list for old and new
5312 * mac */
5313 old_mac = zvni_mac_lookup(zvni, &n->emac);
5314 if (old_mac) {
5315 listnode_delete(old_mac->neigh_list, n);
5316 zvni_deref_ip2mac(zvni, old_mac, 1);
5317 }
5318 listnode_add_sort(mac->neigh_list, n);
5319 memcpy(&n->emac, &macaddr, ETH_ALEN);
5320 }
5321
5322 /* Set "remote" forwarding info. */
5323 UNSET_FLAG(n->flags, ZEBRA_NEIGH_LOCAL);
5324 /* TODO: Handle MAC change. */
5325 n->r_vtep_ip = vtep_ip;
5326 SET_FLAG(n->flags, ZEBRA_NEIGH_REMOTE);
5327
5328 /* Install the entry. */
5329 zvni_neigh_install(zvni, n);
5330 }
5331 }
5332
5333 stream_failure:
5334 return 0;
5335 }
5336
5337 /*
5338 * Handle notification of MAC add/update over VxLAN. If the kernel is notifying
5339 * us, this must involve a multihoming scenario. Treat this as implicit delete
5340 * of any prior local MAC.
5341 */
5342 int zebra_vxlan_check_del_local_mac(struct interface *ifp,
5343 struct interface *br_if,
5344 struct ethaddr *macaddr, vlanid_t vid)
5345 {
5346 struct zebra_if *zif;
5347 struct zebra_l2info_vxlan *vxl;
5348 vni_t vni;
5349 zebra_vni_t *zvni;
5350 zebra_mac_t *mac;
5351 char buf[ETHER_ADDR_STRLEN];
5352
5353 zif = ifp->info;
5354 assert(zif);
5355 vxl = &zif->l2info.vxl;
5356 vni = vxl->vni;
5357
5358 /* Check if EVPN is enabled. */
5359 if (!is_evpn_enabled())
5360 return 0;
5361
5362 /* Locate hash entry; it is expected to exist. */
5363 zvni = zvni_lookup(vni);
5364 if (!zvni)
5365 return 0;
5366
5367 /* If entry doesn't exist, nothing to do. */
5368 mac = zvni_mac_lookup(zvni, macaddr);
5369 if (!mac)
5370 return 0;
5371
5372 /* Is it a local entry? */
5373 if (!CHECK_FLAG(mac->flags, ZEBRA_MAC_LOCAL))
5374 return 0;
5375
5376 if (IS_ZEBRA_DEBUG_VXLAN)
5377 zlog_debug(
5378 "Add/update remote MAC %s intf %s(%u) VNI %u - del local",
5379 prefix_mac2str(macaddr, buf, sizeof(buf)),
5380 ifp->name, ifp->ifindex, vni);
5381
5382 /* Remove MAC from BGP. */
5383 zvni_mac_send_del_to_client(zvni->vni, macaddr, mac->flags);
5384
5385 /*
5386 * If there are no neigh associated with the mac delete the mac
5387 * else mark it as AUTO for forward reference
5388 */
5389 if (!listcount(mac->neigh_list)) {
5390 zvni_mac_del(zvni, mac);
5391 } else {
5392 UNSET_FLAG(mac->flags, ZEBRA_MAC_LOCAL);
5393 SET_FLAG(mac->flags, ZEBRA_MAC_AUTO);
5394 }
5395
5396 return 0;
5397 }
5398
5399 /*
5400 * Handle remote MAC delete by kernel; readd the remote MAC if we have it.
5401 * This can happen because the remote MAC entries are also added as "dynamic",
5402 * so the kernel can ageout the entry.
5403 */
5404 int zebra_vxlan_check_readd_remote_mac(struct interface *ifp,
5405 struct interface *br_if,
5406 struct ethaddr *macaddr, vlanid_t vid)
5407 {
5408 struct zebra_if *zif = NULL;
5409 struct zebra_l2info_vxlan *vxl = NULL;
5410 vni_t vni;
5411 zebra_vni_t *zvni = NULL;
5412 zebra_l3vni_t *zl3vni = NULL;
5413 zebra_mac_t *mac = NULL;
5414 char buf[ETHER_ADDR_STRLEN];
5415
5416 zif = ifp->info;
5417 assert(zif);
5418 vxl = &zif->l2info.vxl;
5419 vni = vxl->vni;
5420
5421 /* Check if EVPN is enabled. */
5422 if (!is_evpn_enabled())
5423 return 0;
5424
5425 /* check if this is a remote RMAC and readd simillar to remote macs */
5426 zl3vni = zl3vni_lookup(vni);
5427 if (zl3vni)
5428 return zebra_vxlan_readd_remote_rmac(zl3vni, macaddr);
5429
5430 /* Locate hash entry; it is expected to exist. */
5431 zvni = zvni_lookup(vni);
5432 if (!zvni)
5433 return 0;
5434
5435 /* If entry doesn't exist, nothing to do. */
5436 mac = zvni_mac_lookup(zvni, macaddr);
5437 if (!mac)
5438 return 0;
5439
5440 /* Is it a remote entry? */
5441 if (!CHECK_FLAG(mac->flags, ZEBRA_MAC_REMOTE))
5442 return 0;
5443
5444 if (IS_ZEBRA_DEBUG_VXLAN)
5445 zlog_debug("Del remote MAC %s intf %s(%u) VNI %u - readd",
5446 prefix_mac2str(macaddr, buf, sizeof(buf)), ifp->name,
5447 ifp->ifindex, vni);
5448
5449 zvni_mac_install(zvni, mac);
5450 return 0;
5451 }
5452
5453 /*
5454 * Handle local MAC delete (on a port or VLAN corresponding to this VNI).
5455 */
5456 int zebra_vxlan_local_mac_del(struct interface *ifp, struct interface *br_if,
5457 struct ethaddr *macaddr, vlanid_t vid)
5458 {
5459 zebra_vni_t *zvni;
5460 zebra_mac_t *mac;
5461 char buf[ETHER_ADDR_STRLEN];
5462
5463 /* We are interested in MACs only on ports or (port, VLAN) that
5464 * map to a VNI.
5465 */
5466 zvni = zvni_map_vlan(ifp, br_if, vid);
5467 if (!zvni)
5468 return 0;
5469 if (!zvni->vxlan_if) {
5470 zlog_err("VNI %u hash %p doesn't have intf upon local MAC DEL",
5471 zvni->vni, zvni);
5472 return -1;
5473 }
5474
5475 if (IS_ZEBRA_DEBUG_VXLAN)
5476 zlog_debug("Del MAC %s intf %s(%u) VID %u -> VNI %u",
5477 prefix_mac2str(macaddr, buf, sizeof(buf)), ifp->name,
5478 ifp->ifindex, vid, zvni->vni);
5479
5480 /* If entry doesn't exist, nothing to do. */
5481 mac = zvni_mac_lookup(zvni, macaddr);
5482 if (!mac)
5483 return 0;
5484
5485 /* Is it a local entry? */
5486 if (!CHECK_FLAG(mac->flags, ZEBRA_MAC_LOCAL))
5487 return 0;
5488
5489 /* Remove MAC from BGP. */
5490 zvni_mac_send_del_to_client(zvni->vni, macaddr, mac->flags);
5491
5492 /* Update all the neigh entries associated with this mac */
5493 zvni_process_neigh_on_local_mac_del(zvni, mac);
5494
5495 /*
5496 * If there are no neigh associated with the mac delete the mac
5497 * else mark it as AUTO for forward reference
5498 */
5499 if (!listcount(mac->neigh_list)) {
5500 zvni_mac_del(zvni, mac);
5501 } else {
5502 UNSET_FLAG(mac->flags, ZEBRA_MAC_LOCAL);
5503 SET_FLAG(mac->flags, ZEBRA_MAC_AUTO);
5504 }
5505
5506 return 0;
5507 }
5508
5509 /*
5510 * Handle local MAC add (on a port or VLAN corresponding to this VNI).
5511 */
5512 int zebra_vxlan_local_mac_add_update(struct interface *ifp,
5513 struct interface *br_if,
5514 struct ethaddr *macaddr, vlanid_t vid,
5515 u_char sticky)
5516 {
5517 zebra_vni_t *zvni;
5518 zebra_mac_t *mac;
5519 char buf[ETHER_ADDR_STRLEN];
5520 int add = 1;
5521 u_char mac_sticky;
5522
5523 /* We are interested in MACs only on ports or (port, VLAN) that
5524 * map to a VNI.
5525 */
5526 zvni = zvni_map_vlan(ifp, br_if, vid);
5527 if (!zvni) {
5528 if (IS_ZEBRA_DEBUG_VXLAN)
5529 zlog_debug(
5530 "Add/Update %sMAC %s intf %s(%u) VID %u, could not find VNI",
5531 sticky ? "sticky " : "",
5532 prefix_mac2str(macaddr, buf, sizeof(buf)),
5533 ifp->name, ifp->ifindex, vid);
5534 return 0;
5535 }
5536
5537 if (!zvni->vxlan_if) {
5538 zlog_err("VNI %u hash %p doesn't have intf upon local MAC ADD",
5539 zvni->vni, zvni);
5540 return -1;
5541 }
5542
5543 if (IS_ZEBRA_DEBUG_VXLAN)
5544 zlog_debug(
5545 "Add/Update %sMAC %s intf %s(%u) VID %u -> VNI %u",
5546 sticky ? "sticky " : "",
5547 prefix_mac2str(macaddr, buf, sizeof(buf)), ifp->name,
5548 ifp->ifindex, vid, zvni->vni);
5549
5550 /* If same entry already exists, nothing to do. */
5551 mac = zvni_mac_lookup(zvni, macaddr);
5552 if (mac) {
5553 if (CHECK_FLAG(mac->flags, ZEBRA_MAC_LOCAL)) {
5554 mac_sticky = CHECK_FLAG(mac->flags, ZEBRA_MAC_STICKY)
5555 ? 1
5556 : 0;
5557
5558
5559 /*
5560 * return if nothing has changed.
5561 * inform bgp if sticky flag has changed
5562 * update locally and do not inform bgp if local
5563 * parameters like interface has changed
5564 */
5565 if (mac_sticky == sticky
5566 && mac->fwd_info.local.ifindex == ifp->ifindex
5567 && mac->fwd_info.local.vid == vid) {
5568 if (IS_ZEBRA_DEBUG_VXLAN)
5569 zlog_debug(
5570 "Add/Update %sMAC %s intf %s(%u) VID %u -> VNI %u, "
5571 "entry exists and has not changed ",
5572 sticky ? "sticky " : "",
5573 prefix_mac2str(macaddr, buf,
5574 sizeof(buf)),
5575 ifp->name, ifp->ifindex, vid,
5576 zvni->vni);
5577 return 0;
5578 } else if (mac_sticky != sticky) {
5579 add = 1;
5580 } else {
5581 add = 0; /* This is an update of local
5582 interface. */
5583 }
5584 } else if (CHECK_FLAG(mac->flags, ZEBRA_MAC_REMOTE)) {
5585 /*
5586 * If we have already learned the MAC as a remote sticky
5587 * MAC,
5588 * this is a operator error and we must log a warning
5589 */
5590 if (CHECK_FLAG(mac->flags, ZEBRA_MAC_STICKY)) {
5591 zlog_warn(
5592 "MAC %s is already learnt as a remote sticky mac behind VTEP %s VNI %d",
5593 prefix_mac2str(macaddr, buf,
5594 sizeof(buf)),
5595 inet_ntoa(mac->fwd_info.r_vtep_ip),
5596 zvni->vni);
5597 return 0;
5598 }
5599 }
5600 }
5601
5602 if (!mac) {
5603 mac = zvni_mac_add(zvni, macaddr);
5604 if (!mac) {
5605 zlog_err("Failed to add MAC %s intf %s(%u) VID %u",
5606 prefix_mac2str(macaddr, buf, sizeof(buf)),
5607 ifp->name, ifp->ifindex, vid);
5608 return -1;
5609 }
5610 }
5611
5612 /* Set "local" forwarding info. */
5613 UNSET_FLAG(mac->flags, ZEBRA_MAC_REMOTE);
5614 UNSET_FLAG(mac->flags, ZEBRA_MAC_AUTO);
5615 SET_FLAG(mac->flags, ZEBRA_MAC_LOCAL);
5616 memset(&mac->fwd_info, 0, sizeof(mac->fwd_info));
5617 mac->fwd_info.local.ifindex = ifp->ifindex;
5618 mac->fwd_info.local.vid = vid;
5619
5620 if (sticky)
5621 SET_FLAG(mac->flags, ZEBRA_MAC_STICKY);
5622 else
5623 UNSET_FLAG(mac->flags, ZEBRA_MAC_STICKY);
5624
5625 /* Inform BGP if required. */
5626 if (add) {
5627 zvni_process_neigh_on_local_mac_add(zvni, mac);
5628 return zvni_mac_send_add_to_client(zvni->vni, macaddr,
5629 mac->flags);
5630 }
5631
5632 return 0;
5633 }
5634
5635 /*
5636 * Handle message from client to delete a remote VTEP for a VNI.
5637 */
5638 int zebra_vxlan_remote_vtep_del(struct zserv *client, u_short length,
5639 struct zebra_vrf *zvrf)
5640 {
5641 struct stream *s;
5642 u_short l = 0;
5643 vni_t vni;
5644 struct in_addr vtep_ip;
5645 zebra_vni_t *zvni;
5646 zebra_vtep_t *zvtep;
5647 struct interface *ifp;
5648 struct zebra_if *zif;
5649
5650 if (!is_evpn_enabled()) {
5651 zlog_warn("%s: EVPN is not enabled yet we have received a vtep del command",
5652 __PRETTY_FUNCTION__);
5653 return -1;
5654 }
5655
5656 if (zvrf_id(zvrf) != VRF_DEFAULT) {
5657 zlog_err("Recv MACIP DEL for non-default VRF %u",
5658 zvrf_id(zvrf));
5659 return -1;
5660 }
5661
5662 s = client->ibuf;
5663
5664 while (l < length) {
5665 /* Obtain each remote VTEP and process. */
5666 STREAM_GETL(s, vni);
5667 l += 4;
5668 STREAM_GET(&vtep_ip.s_addr, s, IPV4_MAX_BYTELEN);
5669 l += IPV4_MAX_BYTELEN;
5670
5671 if (IS_ZEBRA_DEBUG_VXLAN)
5672 zlog_debug("Recv VTEP_DEL %s VNI %u from %s",
5673 inet_ntoa(vtep_ip), vni,
5674 zebra_route_string(client->proto));
5675
5676 /* Locate VNI hash entry - expected to exist. */
5677 zvni = zvni_lookup(vni);
5678 if (!zvni) {
5679 if (IS_ZEBRA_DEBUG_VXLAN)
5680 zlog_debug(
5681 "Failed to locate VNI hash upon remote VTEP DEL, "
5682 "VNI %u",
5683 vni);
5684 continue;
5685 }
5686
5687 ifp = zvni->vxlan_if;
5688 if (!ifp) {
5689 zlog_err(
5690 "VNI %u hash %p doesn't have intf upon remote VTEP DEL",
5691 zvni->vni, zvni);
5692 continue;
5693 }
5694 zif = ifp->info;
5695
5696 /* If down or not mapped to a bridge, we're done. */
5697 if (!if_is_operative(ifp) || !zif->brslave_info.br_if)
5698 continue;
5699
5700 /* If the remote VTEP does not exist, there's nothing more to
5701 * do.
5702 * Otherwise, uninstall any remote MACs pointing to this VTEP
5703 * and
5704 * then, the VTEP entry itself and remove it.
5705 */
5706 zvtep = zvni_vtep_find(zvni, &vtep_ip);
5707 if (!zvtep)
5708 continue;
5709
5710 zvni_neigh_del_from_vtep(zvni, 1, &vtep_ip);
5711 zvni_mac_del_from_vtep(zvni, 1, &vtep_ip);
5712 zvni_vtep_uninstall(zvni, &vtep_ip);
5713 zvni_vtep_del(zvni, zvtep);
5714 }
5715
5716 stream_failure:
5717 return 0;
5718 }
5719
5720 /*
5721 * Handle message from client to add a remote VTEP for a VNI.
5722 */
5723 int zebra_vxlan_remote_vtep_add(struct zserv *client, u_short length,
5724 struct zebra_vrf *zvrf)
5725 {
5726 struct stream *s;
5727 u_short l = 0;
5728 vni_t vni;
5729 struct in_addr vtep_ip;
5730 zebra_vni_t *zvni;
5731 struct interface *ifp;
5732 struct zebra_if *zif;
5733
5734 if (!is_evpn_enabled()) {
5735 zlog_warn("%s: EVPN not enabled yet we received a vtep_add zapi call",
5736 __PRETTY_FUNCTION__);
5737 return -1;
5738 }
5739
5740 if (zvrf_id(zvrf) != VRF_DEFAULT) {
5741 zlog_err("Recv MACIP ADD for non-default VRF %u",
5742 zvrf_id(zvrf));
5743 return -1;
5744 }
5745
5746 s = client->ibuf;
5747
5748 while (l < length) {
5749 /* Obtain each remote VTEP and process. */
5750 STREAM_GETL(s, vni);
5751 l += 4;
5752 STREAM_GET(&vtep_ip.s_addr, s, IPV4_MAX_BYTELEN);
5753 l += IPV4_MAX_BYTELEN;
5754
5755 if (IS_ZEBRA_DEBUG_VXLAN)
5756 zlog_debug("Recv VTEP_ADD %s VNI %u from %s",
5757 inet_ntoa(vtep_ip), vni,
5758 zebra_route_string(client->proto));
5759
5760 /* Locate VNI hash entry - expected to exist. */
5761 zvni = zvni_lookup(vni);
5762 if (!zvni) {
5763 zlog_err(
5764 "Failed to locate VNI hash upon remote VTEP ADD, VNI %u",
5765 vni);
5766 continue;
5767 }
5768
5769 ifp = zvni->vxlan_if;
5770 if (!ifp) {
5771 zlog_err(
5772 "VNI %u hash %p doesn't have intf upon remote VTEP ADD",
5773 zvni->vni, zvni);
5774 continue;
5775 }
5776
5777 zif = ifp->info;
5778
5779 /* If down or not mapped to a bridge, we're done. */
5780 if (!if_is_operative(ifp) || !zif->brslave_info.br_if)
5781 continue;
5782
5783 /* If the remote VTEP already exists,
5784 there's nothing more to do. */
5785 if (zvni_vtep_find(zvni, &vtep_ip))
5786 continue;
5787
5788 if (zvni_vtep_add(zvni, &vtep_ip) == NULL) {
5789 zlog_err(
5790 "Failed to add remote VTEP, VNI %u zvni %p",
5791 vni, zvni);
5792 continue;
5793 }
5794
5795 zvni_vtep_install(zvni, &vtep_ip);
5796 }
5797
5798 stream_failure:
5799 return 0;
5800 }
5801
5802 /*
5803 * Add/Del gateway macip to evpn
5804 * g/w can be:
5805 * 1. SVI interface on a vlan aware bridge
5806 * 2. SVI interface on a vlan unaware bridge
5807 * 3. vrr interface (MACVLAN) associated to a SVI
5808 * We advertise macip routes for an interface if it is associated to VxLan vlan
5809 */
5810 int zebra_vxlan_add_del_gw_macip(struct interface *ifp, struct prefix *p,
5811 int add)
5812 {
5813 struct ipaddr ip;
5814 struct ethaddr macaddr;
5815 zebra_vni_t *zvni = NULL;
5816
5817 memset(&ip, 0, sizeof(struct ipaddr));
5818 memset(&macaddr, 0, sizeof(struct ethaddr));
5819
5820 /* Check if EVPN is enabled. */
5821 if (!is_evpn_enabled())
5822 return 0;
5823
5824 if (IS_ZEBRA_IF_MACVLAN(ifp)) {
5825 struct interface *svi_if =
5826 NULL; /* SVI corresponding to the MACVLAN */
5827 struct zebra_if *ifp_zif =
5828 NULL; /* Zebra daemon specific info for MACVLAN */
5829 struct zebra_if *svi_if_zif =
5830 NULL; /* Zebra daemon specific info for SVI*/
5831
5832 ifp_zif = ifp->info;
5833 if (!ifp_zif)
5834 return -1;
5835
5836 /*
5837 * for a MACVLAN interface the link represents the svi_if
5838 */
5839 svi_if = if_lookup_by_index_per_ns(zebra_ns_lookup(NS_DEFAULT),
5840 ifp_zif->link_ifindex);
5841 if (!svi_if) {
5842 zlog_err("MACVLAN %s(%u) without link information",
5843 ifp->name, ifp->ifindex);
5844 return -1;
5845 }
5846
5847 if (IS_ZEBRA_IF_VLAN(svi_if)) {
5848 /*
5849 * If it is a vlan aware bridge then the link gives the
5850 * bridge information
5851 */
5852 struct interface *svi_if_link = NULL;
5853
5854 svi_if_zif = svi_if->info;
5855 if (svi_if_zif) {
5856 svi_if_link = if_lookup_by_index_per_ns(
5857 zebra_ns_lookup(NS_DEFAULT),
5858 svi_if_zif->link_ifindex);
5859 zvni = zvni_from_svi(svi_if, svi_if_link);
5860 }
5861 } else if (IS_ZEBRA_IF_BRIDGE(svi_if)) {
5862 /*
5863 * If it is a vlan unaware bridge then svi is the bridge
5864 * itself
5865 */
5866 zvni = zvni_from_svi(svi_if, svi_if);
5867 }
5868 } else if (IS_ZEBRA_IF_VLAN(ifp)) {
5869 struct zebra_if *svi_if_zif =
5870 NULL; /* Zebra daemon specific info for SVI */
5871 struct interface *svi_if_link =
5872 NULL; /* link info for the SVI = bridge info */
5873
5874 svi_if_zif = ifp->info;
5875 svi_if_link = if_lookup_by_index_per_ns(
5876 zebra_ns_lookup(NS_DEFAULT), svi_if_zif->link_ifindex);
5877 if (svi_if_zif && svi_if_link)
5878 zvni = zvni_from_svi(ifp, svi_if_link);
5879 } else if (IS_ZEBRA_IF_BRIDGE(ifp)) {
5880 zvni = zvni_from_svi(ifp, ifp);
5881 }
5882
5883 if (!zvni)
5884 return 0;
5885
5886 if (!zvni->vxlan_if) {
5887 zlog_err("VNI %u hash %p doesn't have intf upon MACVLAN up",
5888 zvni->vni, zvni);
5889 return -1;
5890 }
5891
5892
5893 memcpy(&macaddr.octet, ifp->hw_addr, ETH_ALEN);
5894
5895 if (p->family == AF_INET) {
5896 ip.ipa_type = IPADDR_V4;
5897 memcpy(&(ip.ipaddr_v4), &(p->u.prefix4),
5898 sizeof(struct in_addr));
5899 } else if (p->family == AF_INET6) {
5900 ip.ipa_type = IPADDR_V6;
5901 memcpy(&(ip.ipaddr_v6), &(p->u.prefix6),
5902 sizeof(struct in6_addr));
5903 }
5904
5905
5906 if (add)
5907 zvni_gw_macip_add(ifp, zvni, &macaddr, &ip);
5908 else
5909 zvni_gw_macip_del(ifp, zvni, &ip);
5910
5911 return 0;
5912 }
5913
5914 /*
5915 * Handle SVI interface going down.
5916 * SVI can be associated to either L3-VNI or L2-VNI.
5917 * For L2-VNI: At this point, this is a NOP since
5918 * the kernel deletes the neighbor entries on this SVI (if any).
5919 * We only need to update the vrf corresponding to zvni.
5920 * For L3-VNI: L3-VNI is operationally down, update mac-ip routes and delete
5921 * from bgp
5922 */
5923 int zebra_vxlan_svi_down(struct interface *ifp, struct interface *link_if)
5924 {
5925 zebra_l3vni_t *zl3vni = NULL;
5926
5927 zl3vni = zl3vni_from_svi(ifp, link_if);
5928 if (zl3vni) {
5929
5930 /* process l3-vni down */
5931 zebra_vxlan_process_l3vni_oper_down(zl3vni);
5932
5933 /* remove association with svi-if */
5934 zl3vni->svi_if = NULL;
5935 } else {
5936 zebra_vni_t *zvni = NULL;
5937
5938 /* since we dont have svi corresponding to zvni, we associate it
5939 * to default vrf. Note: the corresponding neigh entries on the
5940 * SVI would have already been deleted */
5941 zvni = zvni_from_svi(ifp, link_if);
5942 if (zvni) {
5943 zvni->vrf_id = VRF_DEFAULT;
5944
5945 /* update the tenant vrf in BGP */
5946 zvni_send_add_to_client(zvni);
5947 }
5948 }
5949 return 0;
5950 }
5951
5952 /*
5953 * Handle SVI interface coming up.
5954 * SVI can be associated to L3-VNI (l3vni vxlan interface) or L2-VNI (l2-vni
5955 * vxlan intf).
5956 * For L2-VNI: we need to install any remote neighbors entried (used for
5957 * apr-suppression)
5958 * For L3-VNI: SVI will be used to get the rmac to be used with L3-VNI
5959 */
5960 int zebra_vxlan_svi_up(struct interface *ifp, struct interface *link_if)
5961 {
5962 zebra_vni_t *zvni = NULL;
5963 zebra_l3vni_t *zl3vni = NULL;
5964
5965 zl3vni = zl3vni_from_svi(ifp, link_if);
5966 if (zl3vni) {
5967
5968 /* associate with svi */
5969 zl3vni->svi_if = ifp;
5970
5971 /* process oper-up */
5972 if (is_l3vni_oper_up(zl3vni))
5973 zebra_vxlan_process_l3vni_oper_up(zl3vni);
5974 } else {
5975
5976 /* process SVI up for l2-vni */
5977 struct neigh_walk_ctx n_wctx;
5978
5979 zvni = zvni_from_svi(ifp, link_if);
5980 if (!zvni)
5981 return 0;
5982
5983 if (!zvni->vxlan_if) {
5984 zlog_err("VNI %u hash %p doesn't have intf upon SVI up",
5985 zvni->vni, zvni);
5986 return -1;
5987 }
5988
5989 if (IS_ZEBRA_DEBUG_VXLAN)
5990 zlog_debug("SVI %s(%u) VNI %u VRF %s is UP, installing neighbors",
5991 ifp->name, ifp->ifindex, zvni->vni,
5992 vrf_id_to_name(ifp->vrf_id));
5993
5994 /* update the vrf information for l2-vni and inform bgp */
5995 zvni->vrf_id = ifp->vrf_id;
5996 zvni_send_add_to_client(zvni);
5997
5998 /* Install any remote neighbors for this VNI. */
5999 memset(&n_wctx, 0, sizeof(struct neigh_walk_ctx));
6000 n_wctx.zvni = zvni;
6001 hash_iterate(zvni->neigh_table,
6002 zvni_install_neigh_hash,
6003 &n_wctx);
6004 }
6005
6006 return 0;
6007 }
6008
6009 /*
6010 * Handle VxLAN interface down
6011 */
6012 int zebra_vxlan_if_down(struct interface *ifp)
6013 {
6014 vni_t vni;
6015 struct zebra_if *zif = NULL;
6016 struct zebra_l2info_vxlan *vxl = NULL;
6017
6018 /* Check if EVPN is enabled. */
6019 if (!is_evpn_enabled())
6020 return 0;
6021
6022 zif = ifp->info;
6023 assert(zif);
6024 vxl = &zif->l2info.vxl;
6025 vni = vxl->vni;
6026
6027
6028 if (is_vni_l3(vni)) {
6029
6030 /* process-if-down for l3-vni */
6031 zebra_l3vni_t *zl3vni = NULL;
6032
6033 if (IS_ZEBRA_DEBUG_VXLAN)
6034 zlog_debug("Intf %s(%u) L3-VNI %u is DOWN",
6035 ifp->name, ifp->ifindex, vni);
6036
6037 zl3vni = zl3vni_lookup(vni);
6038 if (!zl3vni) {
6039 zlog_err(
6040 "Failed to locate L3-VNI hash at DOWN, IF %s(%u) VNI %u",
6041 ifp->name, ifp->ifindex, vni);
6042 return -1;
6043 }
6044
6045 zebra_vxlan_process_l3vni_oper_down(zl3vni);
6046
6047 } else {
6048 /* process if-down for l2-vni */
6049 zebra_vni_t *zvni;
6050
6051 if (IS_ZEBRA_DEBUG_VXLAN)
6052 zlog_debug("Intf %s(%u) L2-VNI %u is DOWN",
6053 ifp->name, ifp->ifindex, vni);
6054
6055 /* Locate hash entry; it is expected to exist. */
6056 zvni = zvni_lookup(vni);
6057 if (!zvni) {
6058 zlog_err(
6059 "Failed to locate VNI hash at DOWN, IF %s(%u) VNI %u",
6060 ifp->name, ifp->ifindex, vni);
6061 return -1;
6062 }
6063
6064 assert(zvni->vxlan_if == ifp);
6065
6066 /* Delete this VNI from BGP. */
6067 zvni_send_del_to_client(zvni->vni);
6068
6069 /* Free up all neighbors and MACs, if any. */
6070 zvni_neigh_del_all(zvni, 1, 0, DEL_ALL_NEIGH);
6071 zvni_mac_del_all(zvni, 1, 0, DEL_ALL_MAC);
6072
6073 /* Free up all remote VTEPs, if any. */
6074 zvni_vtep_del_all(zvni, 1);
6075 }
6076 return 0;
6077 }
6078
6079 /*
6080 * Handle VxLAN interface up - update BGP if required.
6081 */
6082 int zebra_vxlan_if_up(struct interface *ifp)
6083 {
6084 vni_t vni;
6085 struct zebra_if *zif = NULL;
6086 struct zebra_l2info_vxlan *vxl = NULL;
6087
6088 /* Check if EVPN is enabled. */
6089 if (!is_evpn_enabled())
6090 return 0;
6091
6092 zif = ifp->info;
6093 assert(zif);
6094 vxl = &zif->l2info.vxl;
6095 vni = vxl->vni;
6096
6097 if (is_vni_l3(vni)) {
6098
6099 /* Handle L3-VNI add */
6100 zebra_l3vni_t *zl3vni = NULL;
6101
6102 if (IS_ZEBRA_DEBUG_VXLAN)
6103 zlog_debug("Intf %s(%u) L3-VNI %u is UP",
6104 ifp->name, ifp->ifindex, vni);
6105
6106 zl3vni = zl3vni_lookup(vni);
6107 if (!zl3vni) {
6108 zlog_err(
6109 "Failed to locate L3-VNI hash at UP, IF %s(%u) VNI %u",
6110 ifp->name, ifp->ifindex, vni);
6111 return -1;
6112 }
6113
6114 /* we need to associate with SVI, if any, we can associate with
6115 * svi-if only after association with vxlan-intf is complete
6116 */
6117 zl3vni->svi_if = zl3vni_map_to_svi_if(zl3vni);
6118
6119 if (is_l3vni_oper_up(zl3vni))
6120 zebra_vxlan_process_l3vni_oper_up(zl3vni);
6121 } else {
6122 /* Handle L2-VNI add */
6123
6124 zebra_vni_t *zvni = NULL;
6125 zebra_l3vni_t *zl3vni = NULL;
6126 struct interface *vlan_if = NULL;
6127
6128 if (IS_ZEBRA_DEBUG_VXLAN)
6129 zlog_debug("Intf %s(%u) L2-VNI %u is UP",
6130 ifp->name, ifp->ifindex, vni);
6131
6132 /* Locate hash entry; it is expected to exist. */
6133 zvni = zvni_lookup(vni);
6134 if (!zvni) {
6135 zlog_err(
6136 "Failed to locate VNI hash at UP, IF %s(%u) VNI %u",
6137 ifp->name, ifp->ifindex, vni);
6138 return -1;
6139 }
6140
6141 assert(zvni->vxlan_if == ifp);
6142 vlan_if = zvni_map_to_svi(vxl->access_vlan,
6143 zif->brslave_info.br_if);
6144 if (vlan_if) {
6145 zvni->vrf_id = vlan_if->vrf_id;
6146 zl3vni = zl3vni_from_vrf(vlan_if->vrf_id);
6147 if (zl3vni)
6148 listnode_add_sort(zl3vni->l2vnis, zvni);
6149 }
6150
6151 /* If part of a bridge, inform BGP about this VNI. */
6152 /* Also, read and populate local MACs and neighbors. */
6153 if (zif->brslave_info.br_if) {
6154 zvni_send_add_to_client(zvni);
6155 zvni_read_mac_neigh(zvni, ifp);
6156 }
6157 }
6158
6159 return 0;
6160 }
6161
6162 /*
6163 * Handle VxLAN interface delete. Locate and remove entry in hash table
6164 * and update BGP, if required.
6165 */
6166 int zebra_vxlan_if_del(struct interface *ifp)
6167 {
6168 vni_t vni;
6169 struct zebra_if *zif = NULL;
6170 struct zebra_l2info_vxlan *vxl = NULL;
6171
6172 /* Check if EVPN is enabled. */
6173 if (!is_evpn_enabled())
6174 return 0;
6175
6176 zif = ifp->info;
6177 assert(zif);
6178 vxl = &zif->l2info.vxl;
6179 vni = vxl->vni;
6180
6181 if (is_vni_l3(vni)) {
6182
6183 /* process if-del for l3-vni */
6184 zebra_l3vni_t *zl3vni = NULL;
6185
6186 if (IS_ZEBRA_DEBUG_VXLAN)
6187 zlog_debug("Del L3-VNI %u intf %s(%u)",
6188 vni, ifp->name, ifp->ifindex);
6189
6190 zl3vni = zl3vni_lookup(vni);
6191 if (!zl3vni) {
6192 zlog_err(
6193 "Failed to locate L3-VNI hash at del, IF %s(%u) VNI %u",
6194 ifp->name, ifp->ifindex, vni);
6195 return 0;
6196 }
6197
6198 /* process oper-down for l3-vni */
6199 zebra_vxlan_process_l3vni_oper_down(zl3vni);
6200
6201 /* remove the association with vxlan_if */
6202 memset(&zl3vni->local_vtep_ip, 0, sizeof(struct in_addr));
6203 zl3vni->vxlan_if = NULL;
6204 } else {
6205
6206 /* process if-del for l2-vni*/
6207 zebra_vni_t *zvni = NULL;
6208 zebra_l3vni_t *zl3vni = NULL;
6209
6210 if (IS_ZEBRA_DEBUG_VXLAN)
6211 zlog_debug("Del L2-VNI %u intf %s(%u)",
6212 vni, ifp->name, ifp->ifindex);
6213
6214 /* Locate hash entry; it is expected to exist. */
6215 zvni = zvni_lookup(vni);
6216 if (!zvni) {
6217 zlog_err(
6218 "Failed to locate VNI hash at del, IF %s(%u) VNI %u",
6219 ifp->name, ifp->ifindex, vni);
6220 return 0;
6221 }
6222
6223 /* remove from l3-vni list */
6224 zl3vni = zl3vni_from_vrf(zvni->vrf_id);
6225 if (zl3vni)
6226 listnode_delete(zl3vni->l2vnis, zvni);
6227
6228 /* Delete VNI from BGP. */
6229 zvni_send_del_to_client(zvni->vni);
6230
6231 /* Free up all neighbors and MAC, if any. */
6232 zvni_neigh_del_all(zvni, 0, 0, DEL_ALL_NEIGH);
6233 zvni_mac_del_all(zvni, 0, 0, DEL_ALL_MAC);
6234
6235 /* Free up all remote VTEPs, if any. */
6236 zvni_vtep_del_all(zvni, 0);
6237
6238 /* Delete the hash entry. */
6239 if (zvni_del(zvni)) {
6240 zlog_err("Failed to del VNI hash %p, IF %s(%u) VNI %u",
6241 zvni, ifp->name, ifp->ifindex, zvni->vni);
6242 return -1;
6243 }
6244 }
6245
6246 return 0;
6247 }
6248
6249 /*
6250 * Handle VxLAN interface update - change to tunnel IP, master or VLAN.
6251 */
6252 int zebra_vxlan_if_update(struct interface *ifp, u_int16_t chgflags)
6253 {
6254 vni_t vni;
6255 struct zebra_if *zif = NULL;
6256 struct zebra_l2info_vxlan *vxl = NULL;
6257
6258 /* Check if EVPN is enabled. */
6259 if (!is_evpn_enabled())
6260 return 0;
6261
6262 zif = ifp->info;
6263 assert(zif);
6264 vxl = &zif->l2info.vxl;
6265 vni = vxl->vni;
6266
6267 if (is_vni_l3(vni)) {
6268 zebra_l3vni_t *zl3vni = NULL;
6269
6270 zl3vni = zl3vni_lookup(vni);
6271 if (!zl3vni) {
6272 zlog_err(
6273 "Failed to find L3-VNI hash on update, IF %s(%u) VNI %u",
6274 ifp->name, ifp->ifindex, vni);
6275 return -1;
6276 }
6277
6278 if (IS_ZEBRA_DEBUG_VXLAN)
6279 zlog_debug(
6280 "Update L3-VNI %u intf %s(%u) VLAN %u local IP %s master %u chg 0x%x",
6281 vni, ifp->name, ifp->ifindex,
6282 vxl->access_vlan, inet_ntoa(vxl->vtep_ip),
6283 zif->brslave_info.bridge_ifindex, chgflags);
6284
6285 /* Removed from bridge? Cleanup and return */
6286 if ((chgflags & ZEBRA_VXLIF_MASTER_CHANGE)
6287 && (zif->brslave_info.bridge_ifindex == IFINDEX_INTERNAL)) {
6288 zebra_vxlan_process_l3vni_oper_down(zl3vni);
6289 return 0;
6290 }
6291
6292 /* access-vlan change - process oper down, associate with new
6293 * svi_if and then process oper up again
6294 */
6295 if (chgflags & ZEBRA_VXLIF_VLAN_CHANGE) {
6296 if (if_is_operative(ifp)) {
6297 zebra_vxlan_process_l3vni_oper_down(zl3vni);
6298 zl3vni->svi_if = NULL;
6299 zl3vni->svi_if = zl3vni_map_to_svi_if(zl3vni);
6300 if (is_l3vni_oper_up(zl3vni))
6301 zebra_vxlan_process_l3vni_oper_up(
6302 zl3vni);
6303 }
6304 }
6305
6306 /* if we have a valid new master, process l3-vni oper up */
6307 if (chgflags & ZEBRA_VXLIF_MASTER_CHANGE) {
6308 if (is_l3vni_oper_up(zl3vni))
6309 zebra_vxlan_process_l3vni_oper_up(zl3vni);
6310 }
6311 } else {
6312 zebra_vni_t *zvni = NULL;
6313
6314 /* Update VNI hash. */
6315 zvni = zvni_lookup(vni);
6316 if (!zvni) {
6317 zlog_err(
6318 "Failed to find L2-VNI hash on update, IF %s(%u) VNI %u",
6319 ifp->name, ifp->ifindex, vni);
6320 return -1;
6321 }
6322
6323 if (IS_ZEBRA_DEBUG_VXLAN)
6324 zlog_debug(
6325 "Update L2-VNI %u intf %s(%u) VLAN %u local IP %s master %u chg 0x%x",
6326 vni, ifp->name, ifp->ifindex,
6327 vxl->access_vlan, inet_ntoa(vxl->vtep_ip),
6328 zif->brslave_info.bridge_ifindex, chgflags);
6329
6330 /* Removed from bridge? Cleanup and return */
6331 if ((chgflags & ZEBRA_VXLIF_MASTER_CHANGE)
6332 && (zif->brslave_info.bridge_ifindex == IFINDEX_INTERNAL)) {
6333 /* Delete from client, remove all remote VTEPs */
6334 /* Also, free up all MACs and neighbors. */
6335 zvni_send_del_to_client(zvni->vni);
6336 zvni_neigh_del_all(zvni, 1, 0, DEL_ALL_NEIGH);
6337 zvni_mac_del_all(zvni, 1, 0, DEL_ALL_MAC);
6338 zvni_vtep_del_all(zvni, 1);
6339 return 0;
6340 }
6341
6342 /* Handle other changes. */
6343 if (chgflags & ZEBRA_VXLIF_VLAN_CHANGE) {
6344 /* Remove all existing local neigh and MACs for this VNI
6345 * (including from BGP)
6346 */
6347 zvni_neigh_del_all(zvni, 0, 1, DEL_LOCAL_MAC);
6348 zvni_mac_del_all(zvni, 0, 1, DEL_LOCAL_MAC);
6349 }
6350
6351 zvni->local_vtep_ip = vxl->vtep_ip;
6352 zvni->vxlan_if = ifp;
6353
6354 /* Take further actions needed.
6355 * Note that if we are here, there is a change of interest.
6356 */
6357 /* If down or not mapped to a bridge, we're done. */
6358 if (!if_is_operative(ifp) || !zif->brslave_info.br_if)
6359 return 0;
6360
6361 /* Inform BGP, if there is a change of interest. */
6362 if (chgflags
6363 & (ZEBRA_VXLIF_MASTER_CHANGE | ZEBRA_VXLIF_LOCAL_IP_CHANGE))
6364 zvni_send_add_to_client(zvni);
6365
6366 /* If there is a valid new master or a VLAN mapping change,
6367 * read and populate local MACs and neighbors.
6368 * Also, reinstall any remote MACs and neighbors
6369 * for this VNI (based on new VLAN).
6370 */
6371 if (chgflags & ZEBRA_VXLIF_MASTER_CHANGE)
6372 zvni_read_mac_neigh(zvni, ifp);
6373 else if (chgflags & ZEBRA_VXLIF_VLAN_CHANGE) {
6374 struct mac_walk_ctx m_wctx;
6375 struct neigh_walk_ctx n_wctx;
6376
6377 zvni_read_mac_neigh(zvni, ifp);
6378
6379 memset(&m_wctx, 0, sizeof(struct mac_walk_ctx));
6380 m_wctx.zvni = zvni;
6381 hash_iterate(zvni->mac_table,
6382 zvni_install_mac_hash,
6383 &m_wctx);
6384
6385 memset(&n_wctx, 0, sizeof(struct neigh_walk_ctx));
6386 n_wctx.zvni = zvni;
6387 hash_iterate(zvni->neigh_table, zvni_install_neigh_hash,
6388 &n_wctx);
6389 }
6390 }
6391
6392 return 0;
6393 }
6394
6395 /*
6396 * Handle VxLAN interface add.
6397 */
6398 int zebra_vxlan_if_add(struct interface *ifp)
6399 {
6400 vni_t vni;
6401 struct zebra_if *zif = NULL;
6402 struct zebra_l2info_vxlan *vxl = NULL;
6403
6404 /* Check if EVPN is enabled. */
6405 if (!is_evpn_enabled())
6406 return 0;
6407
6408 zif = ifp->info;
6409 assert(zif);
6410 vxl = &zif->l2info.vxl;
6411 vni = vxl->vni;
6412
6413 if (is_vni_l3(vni)) {
6414
6415 /* process if-add for l3-vni*/
6416 zebra_l3vni_t *zl3vni = NULL;
6417
6418 if (IS_ZEBRA_DEBUG_VXLAN)
6419 zlog_debug(
6420 "Add L3-VNI %u intf %s(%u) VLAN %u local IP %s master %u",
6421 vni, ifp->name, ifp->ifindex,
6422 vxl->access_vlan, inet_ntoa(vxl->vtep_ip),
6423 zif->brslave_info.bridge_ifindex);
6424
6425 /*
6426 * we expect the l3-vni has entry to be present here.
6427 * The only place l3-vni is created in zebra is vrf-vni mapping
6428 * command. This might change when we have the switchd support
6429 * for l3-vxlan interface.
6430 */
6431 zl3vni = zl3vni_lookup(vni);
6432 if (!zl3vni) {
6433 zlog_err(
6434 "Failed to locate L3-VNI hash at del, IF %s(%u) VNI %u",
6435 ifp->name, ifp->ifindex, vni);
6436 return 0;
6437 }
6438
6439 /* associate with vxlan_if */
6440 zl3vni->local_vtep_ip = vxl->vtep_ip;
6441 zl3vni->vxlan_if = ifp;
6442
6443 /* Associate with SVI, if any. We can associate with svi-if only
6444 * after association with vxlan_if is complete */
6445 zl3vni->svi_if = zl3vni_map_to_svi_if(zl3vni);
6446
6447 if (is_l3vni_oper_up(zl3vni))
6448 zebra_vxlan_process_l3vni_oper_up(zl3vni);
6449 } else {
6450
6451 /* process if-add for l2-vni */
6452 zebra_vni_t *zvni = NULL;
6453 zebra_l3vni_t *zl3vni = NULL;
6454 struct interface *vlan_if = NULL;
6455
6456 /* Create or update VNI hash. */
6457 zvni = zvni_lookup(vni);
6458 if (!zvni) {
6459 zvni = zvni_add(vni);
6460 if (!zvni) {
6461 zlog_err(
6462 "Failed to add VNI hash, IF %s(%u) VNI %u",
6463 ifp->name, ifp->ifindex, vni);
6464 return -1;
6465 }
6466 }
6467
6468 zvni->local_vtep_ip = vxl->vtep_ip;
6469 zvni->vxlan_if = ifp;
6470 vlan_if = zvni_map_to_svi(vxl->access_vlan,
6471 zif->brslave_info.br_if);
6472 if (vlan_if) {
6473 zvni->vrf_id = vlan_if->vrf_id;
6474 zl3vni = zl3vni_from_vrf(vlan_if->vrf_id);
6475 if (zl3vni)
6476 listnode_add_sort(zl3vni->l2vnis, zvni);
6477 }
6478
6479 if (IS_ZEBRA_DEBUG_VXLAN)
6480 zlog_debug(
6481 "Add L2-VNI %u VRF %s intf %s(%u) VLAN %u local IP %s master %u",
6482 vni,
6483 vlan_if ? vrf_id_to_name(vlan_if->vrf_id) :
6484 "Default",
6485 ifp->name, ifp->ifindex,
6486 vxl->access_vlan, inet_ntoa(vxl->vtep_ip),
6487 zif->brslave_info.bridge_ifindex);
6488
6489 /* If down or not mapped to a bridge, we're done. */
6490 if (!if_is_operative(ifp) || !zif->brslave_info.br_if)
6491 return 0;
6492
6493 /* Inform BGP */
6494 zvni_send_add_to_client(zvni);
6495
6496 /* Read and populate local MACs and neighbors */
6497 zvni_read_mac_neigh(zvni, ifp);
6498 }
6499
6500 return 0;
6501 }
6502
6503 int zebra_vxlan_process_vrf_vni_cmd(struct zebra_vrf *zvrf,
6504 vni_t vni,
6505 char *err, int err_str_sz,
6506 int add)
6507 {
6508 zebra_l3vni_t *zl3vni = NULL;
6509 struct zebra_vrf *zvrf_default = NULL;
6510
6511 zvrf_default = zebra_vrf_lookup_by_id(VRF_DEFAULT);
6512 if (!zvrf_default)
6513 return -1;
6514
6515 if (IS_ZEBRA_DEBUG_VXLAN)
6516 zlog_debug("vrf %s vni %u %s",
6517 zvrf_name(zvrf),
6518 vni,
6519 add ? "ADD" : "DEL");
6520
6521 if (add) {
6522
6523 zebra_vxlan_handle_vni_transition(zvrf, vni, add);
6524
6525 /* check if the vni is already present under zvrf */
6526 if (zvrf->l3vni) {
6527 snprintf(err, err_str_sz,
6528 "VNI is already configured under the vrf");
6529 return -1;
6530 }
6531
6532 /* check if this VNI is already present in the system */
6533 zl3vni = zl3vni_lookup(vni);
6534 if (zl3vni) {
6535 snprintf(err, err_str_sz,
6536 "VNI is already configured as L3-VNI");
6537 return -1;
6538 }
6539
6540 /* add the L3-VNI to the global table */
6541 zl3vni = zl3vni_add(vni, zvrf_id(zvrf));
6542 if (!zl3vni) {
6543 snprintf(err, err_str_sz,
6544 "Could not add L3-VNI");
6545 return -1;
6546 }
6547
6548 /* associate the vrf with vni */
6549 zvrf->l3vni = vni;
6550
6551 /* associate with vxlan-intf;
6552 * we need to associate with the vxlan-intf first
6553 */
6554 zl3vni->vxlan_if = zl3vni_map_to_vxlan_if(zl3vni);
6555
6556 /* associate with corresponding SVI interface, we can associate
6557 * with svi-if only after vxlan interface association is
6558 * complete
6559 */
6560 zl3vni->svi_if = zl3vni_map_to_svi_if(zl3vni);
6561
6562 /* formulate l2vni list */
6563 hash_iterate(zvrf_default->vni_table,
6564 zvni_add_to_l3vni_list, zl3vni);
6565
6566 if (is_l3vni_oper_up(zl3vni))
6567 zebra_vxlan_process_l3vni_oper_up(zl3vni);
6568
6569 } else {
6570 zl3vni = zl3vni_lookup(vni);
6571 if (!zl3vni) {
6572 snprintf(err, err_str_sz, "VNI doesn't exist");
6573 return -1;
6574 }
6575
6576 zebra_vxlan_process_l3vni_oper_down(zl3vni);
6577
6578 /* delete and uninstall all rmacs */
6579 hash_iterate(zl3vni->rmac_table,
6580 zl3vni_del_rmac_hash_entry,
6581 zl3vni);
6582
6583 /* delete and uninstall all next-hops */
6584 hash_iterate(zl3vni->nh_table,
6585 zl3vni_del_nh_hash_entry,
6586 zl3vni);
6587
6588 zvrf->l3vni = 0;
6589 zl3vni_del(zl3vni);
6590
6591 zebra_vxlan_handle_vni_transition(zvrf, vni, add);
6592 }
6593 return 0;
6594 }
6595
6596 int zebra_vxlan_vrf_delete(struct zebra_vrf *zvrf)
6597 {
6598 zebra_l3vni_t *zl3vni = NULL;
6599
6600 zl3vni = zl3vni_from_vrf(zvrf_id(zvrf));
6601 if (!zl3vni)
6602 return 0;
6603
6604 zebra_vxlan_process_l3vni_oper_down(zl3vni);
6605 zl3vni_del(zl3vni);
6606 zebra_vxlan_handle_vni_transition(zvrf, zl3vni->vni, 0);
6607
6608 return 0;
6609 }
6610
6611 /*
6612 * Handle message from client to enable/disable advertisement of g/w macip
6613 * routes
6614 */
6615 int zebra_vxlan_advertise_subnet(struct zserv *client, u_short length,
6616 struct zebra_vrf *zvrf)
6617 {
6618 struct stream *s;
6619 int advertise;
6620 vni_t vni = 0;
6621 zebra_vni_t *zvni = NULL;
6622 struct interface *ifp = NULL;
6623 struct zebra_if *zif = NULL;
6624 struct zebra_l2info_vxlan zl2_info;
6625 struct interface *vlan_if = NULL;
6626
6627 if (zvrf_id(zvrf) != VRF_DEFAULT) {
6628 zlog_err("EVPN GW-MACIP Adv for non-default VRF %u",
6629 zvrf_id(zvrf));
6630 return -1;
6631 }
6632
6633 s = client->ibuf;
6634 advertise = stream_getc(s);
6635 vni = stream_get3(s);
6636
6637 zvni = zvni_lookup(vni);
6638 if (!zvni)
6639 return 0;
6640
6641 if (zvni->advertise_subnet == advertise)
6642 return 0;
6643
6644 if (IS_ZEBRA_DEBUG_VXLAN)
6645 zlog_debug(
6646 "EVPN subnet Adv %s on VNI %d , currently %s",
6647 advertise ? "enabled" : "disabled", vni,
6648 zvni->advertise_subnet ? "enabled" : "disabled");
6649
6650
6651 zvni->advertise_subnet = advertise;
6652
6653 ifp = zvni->vxlan_if;
6654 if (!ifp)
6655 return 0;
6656
6657 zif = ifp->info;
6658
6659 /* If down or not mapped to a bridge, we're done. */
6660 if (!if_is_operative(ifp) || !zif->brslave_info.br_if)
6661 return 0;
6662
6663 zl2_info = zif->l2info.vxl;
6664
6665 vlan_if = zvni_map_to_svi(zl2_info.access_vlan,
6666 zif->brslave_info.br_if);
6667 if (!vlan_if)
6668 return 0;
6669
6670 if (zvni->advertise_subnet)
6671 zvni_advertise_subnet(zvni, vlan_if, 1);
6672 else
6673 zvni_advertise_subnet(zvni, vlan_if, 0);
6674
6675 return 0;
6676 }
6677
6678 /*
6679 * Handle message from client to enable/disable advertisement of g/w macip
6680 * routes
6681 */
6682 int zebra_vxlan_advertise_gw_macip(struct zserv *client, u_short length,
6683 struct zebra_vrf *zvrf)
6684 {
6685 struct stream *s;
6686 int advertise;
6687 vni_t vni = 0;
6688 zebra_vni_t *zvni = NULL;
6689 struct interface *ifp = NULL;
6690
6691 if (zvrf_id(zvrf) != VRF_DEFAULT) {
6692 zlog_err("EVPN GW-MACIP Adv for non-default VRF %u",
6693 zvrf_id(zvrf));
6694 return -1;
6695 }
6696
6697 s = client->ibuf;
6698 STREAM_GETC(s, advertise);
6699 STREAM_GET(&vni, s, 3);
6700
6701 if (!vni) {
6702 if (IS_ZEBRA_DEBUG_VXLAN)
6703 zlog_debug("EVPN gateway macip Adv %s, currently %s",
6704 advertise ? "enabled" : "disabled",
6705 advertise_gw_macip_enabled(NULL)
6706 ? "enabled"
6707 : "disabled");
6708
6709 if (zvrf->advertise_gw_macip == advertise)
6710 return 0;
6711
6712 zvrf->advertise_gw_macip = advertise;
6713
6714 if (advertise_gw_macip_enabled(zvni))
6715 hash_iterate(zvrf->vni_table,
6716 zvni_gw_macip_add_for_vni_hash, NULL);
6717 else
6718 hash_iterate(zvrf->vni_table,
6719 zvni_gw_macip_del_for_vni_hash, NULL);
6720
6721 } else {
6722 struct zebra_if *zif = NULL;
6723 struct zebra_l2info_vxlan zl2_info;
6724 struct interface *vlan_if = NULL;
6725 struct interface *vrr_if = NULL;
6726
6727 if (IS_ZEBRA_DEBUG_VXLAN)
6728 zlog_debug(
6729 "EVPN gateway macip Adv %s on VNI %d , currently %s",
6730 advertise ? "enabled" : "disabled", vni,
6731 advertise_gw_macip_enabled(zvni)
6732 ? "enabled"
6733 : "disabled");
6734
6735 zvni = zvni_lookup(vni);
6736 if (!zvni)
6737 return 0;
6738
6739 if (zvni->advertise_gw_macip == advertise)
6740 return 0;
6741
6742 zvni->advertise_gw_macip = advertise;
6743
6744 ifp = zvni->vxlan_if;
6745 if (!ifp)
6746 return 0;
6747
6748 zif = ifp->info;
6749
6750 /* If down or not mapped to a bridge, we're done. */
6751 if (!if_is_operative(ifp) || !zif->brslave_info.br_if)
6752 return 0;
6753
6754 zl2_info = zif->l2info.vxl;
6755
6756 vlan_if = zvni_map_to_svi(zl2_info.access_vlan,
6757 zif->brslave_info.br_if);
6758 if (!vlan_if)
6759 return 0;
6760
6761 if (advertise_gw_macip_enabled(zvni)) {
6762 /* Add primary SVI MAC-IP */
6763 zvni_add_macip_for_intf(vlan_if, zvni);
6764
6765 /* Add VRR MAC-IP - if any*/
6766 vrr_if = zebra_get_vrr_intf_for_svi(vlan_if);
6767 if (vrr_if)
6768 zvni_add_macip_for_intf(vrr_if, zvni);
6769 } else {
6770 /* Del primary MAC-IP */
6771 zvni_del_macip_for_intf(vlan_if, zvni);
6772
6773 /* Del VRR MAC-IP - if any*/
6774 vrr_if = zebra_get_vrr_intf_for_svi(vlan_if);
6775 if (vrr_if)
6776 zvni_del_macip_for_intf(vrr_if, zvni);
6777 }
6778 }
6779
6780 stream_failure:
6781 return 0;
6782 }
6783
6784
6785 /*
6786 * Handle message from client to learn (or stop learning) about VNIs and MACs.
6787 * When enabled, the VNI hash table will be built and MAC FDB table read;
6788 * when disabled, the entries should be deleted and remote VTEPs and MACs
6789 * uninstalled from the kernel.
6790 */
6791 int zebra_vxlan_advertise_all_vni(struct zserv *client,
6792 u_short length, struct zebra_vrf *zvrf)
6793 {
6794 struct stream *s = NULL;
6795 int advertise = 0;
6796 struct zebra_ns *zns = NULL;
6797
6798 if (zvrf_id(zvrf) != VRF_DEFAULT) {
6799 zlog_err("EVPN VNI Adv for non-default VRF %u",
6800 zvrf_id(zvrf));
6801 return -1;
6802 }
6803
6804 s = client->ibuf;
6805 STREAM_GETC(s, advertise);
6806
6807 if (IS_ZEBRA_DEBUG_VXLAN)
6808 zlog_debug("EVPN VNI Adv %s, currently %s",
6809 advertise ? "enabled" : "disabled",
6810 is_evpn_enabled() ? "enabled" : "disabled");
6811
6812 if (zvrf->advertise_all_vni == advertise)
6813 return 0;
6814
6815 zvrf->advertise_all_vni = advertise;
6816 if (is_evpn_enabled()) {
6817 /* Build VNI hash table and inform BGP. */
6818 zvni_build_hash_table();
6819
6820 /* Add all SVI (L3 GW) MACs to BGP*/
6821 hash_iterate(zvrf->vni_table, zvni_gw_macip_add_for_vni_hash,
6822 NULL);
6823
6824 /* Read the MAC FDB */
6825 macfdb_read(zvrf->zns);
6826
6827 /* Read neighbors */
6828 neigh_read(zvrf->zns);
6829 } else {
6830 /* Cleanup VTEPs for all VNIs - uninstall from
6831 * kernel and free entries.
6832 */
6833 hash_iterate(zvrf->vni_table, zvni_cleanup_all, zvrf);
6834
6835 /* cleanup all l3vnis */
6836 zns = zebra_ns_lookup(NS_DEFAULT);
6837 if (!zns)
6838 return -1;
6839
6840 hash_iterate(zns->l3vni_table, zl3vni_cleanup_all, NULL);
6841 }
6842
6843 stream_failure:
6844 return 0;
6845 }
6846
6847 /*
6848 * Allocate VNI hash table for this VRF and do other initialization.
6849 * NOTE: Currently supported only for default VRF.
6850 */
6851 void zebra_vxlan_init_tables(struct zebra_vrf *zvrf)
6852 {
6853 if (!zvrf)
6854 return;
6855 zvrf->vni_table = hash_create(vni_hash_keymake, vni_hash_cmp,
6856 "Zebra VRF VNI Table");
6857 }
6858
6859 /* Close all VNI handling */
6860 void zebra_vxlan_close_tables(struct zebra_vrf *zvrf)
6861 {
6862 if (!zvrf)
6863 return;
6864 hash_iterate(zvrf->vni_table, zvni_cleanup_all, zvrf);
6865 hash_free(zvrf->vni_table);
6866 }
6867
6868 /* init the l3vni table */
6869 void zebra_vxlan_ns_init(struct zebra_ns *zns)
6870 {
6871 zns->l3vni_table = hash_create(l3vni_hash_keymake, l3vni_hash_cmp,
6872 "Zebra VRF L3 VNI table");
6873 }
6874
6875 /* free l3vni table */
6876 void zebra_vxlan_ns_disable(struct zebra_ns *zns)
6877 {
6878 hash_free(zns->l3vni_table);
6879 }
6880
6881 /* get the l3vni svi ifindex */
6882 ifindex_t get_l3vni_svi_ifindex(vrf_id_t vrf_id)
6883 {
6884 zebra_l3vni_t *zl3vni = NULL;
6885
6886 zl3vni = zl3vni_from_vrf(vrf_id);
6887 if (!zl3vni || !is_l3vni_oper_up(zl3vni))
6888 return 0;
6889
6890 return zl3vni->svi_if->ifindex;
6891 }
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