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Merge pull request #9474 from idryzhov/lib-bgp-dependency
[mirror_frr.git] / bgpd / bgp_zebra.c
CommitLineData
718e3744 1/* zebra client
896014f4
DL		 2 * Copyright (C) 1997, 98, 99 Kunihiro Ishiguro
3 *
4 * This file is part of GNU Zebra.
5 *
6 * GNU Zebra is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License as published by the
8 * Free Software Foundation; either version 2, or (at your option) any
9 * later version.
10 *
11 * GNU Zebra is distributed in the hope that it will be useful, but
12 * WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License along
17 * with this program; see the file COPYING; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
19 */
718e3744 20
21#include <zebra.h>
22
23#include "command.h"
24#include "stream.h"
25#include "network.h"
26#include "prefix.h"
27#include "log.h"
28#include "sockunion.h"
29#include "zclient.h"
30#include "routemap.h"
31#include "thread.h"
3f9c7369 32#include "queue.h"
6e919709 33#include "memory.h"
856ca177 34#include "lib/json.h"
2376c3f2 35#include "lib/bfd.h"
94effaf0 36#include "lib/route_opaque.h"
039f3a34 37#include "filter.h"
cd1964ff 38#include "mpls.h"
128ea8ab 39#include "vxlan.h"
6cfe5d15 40#include "pbr.h"
718e3744 41
42#include "bgpd/bgpd.h"
43#include "bgpd/bgp_route.h"
44#include "bgpd/bgp_attr.h"
e46723a5 45#include "bgpd/bgp_aspath.h"
718e3744 46#include "bgpd/bgp_nexthop.h"
47#include "bgpd/bgp_zebra.h"
48#include "bgpd/bgp_fsm.h"
a39275d7 49#include "bgpd/bgp_debug.h"
14454c9f 50#include "bgpd/bgp_errors.h"
8196f13d 51#include "bgpd/bgp_mpath.h"
fb018d25 52#include "bgpd/bgp_nexthop.h"
ffd0c037 53#include "bgpd/bgp_nht.h"
8c4f6381 54#include "bgpd/bgp_bfd.h"
cd1964ff 55#include "bgpd/bgp_label.h"
49e5a4a0 56#ifdef ENABLE_BGP_VNC
d62a17ae 57#include "bgpd/rfapi/rfapi_backend.h"
58#include "bgpd/rfapi/vnc_export_bgp.h"
65efcfce 59#endif
128ea8ab 60#include "bgpd/bgp_evpn.h"
ddb5b488 61#include "bgpd/bgp_mplsvpn.h"
955bfd98 62#include "bgpd/bgp_labelpool.h"
30d50e6d 63#include "bgpd/bgp_pbr.h"
0b9d9cd0 64#include "bgpd/bgp_evpn_private.h"
c44ab6f1 65#include "bgpd/bgp_evpn_mh.h"
6a69ac51 66#include "bgpd/bgp_mac.h"
6b0655a2 67
718e3744 68/* All information about zebra. */
228da428 69struct zclient *zclient = NULL;
718e3744 70
0d020cd6
PR		 71/* hook to indicate vrf status change for SNMP */
72DEFINE_HOOK(bgp_vrf_status_changed, (struct bgp *bgp, struct interface *ifp),
8451921b 73 (bgp, ifp));
0d020cd6 74
ad4cbda1 75/* Can we install into zebra? */
3dc339cd 76static inline bool bgp_install_info_to_zebra(struct bgp *bgp)
ad4cbda1 77{
d62a17ae 78 if (zclient->sock <= 0)
3dc339cd 79 return false;
ad4cbda1 80
bb4ef1ae 81 if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp)) {
15569c58
DA		 82 zlog_debug(
83 "%s: No zebra instance to talk to, not installing information",
84 __func__);
3dc339cd 85 return false;
bb4ef1ae 86 }
ad4cbda1 87
3dc339cd 88 return true;
ad4cbda1 89}
90
afbb1c59
LB		 91int zclient_num_connects;
92
18a6dce6 93/* Router-id update message from zebra. */
121f9dee 94static int bgp_router_id_update(ZAPI_CALLBACK_ARGS)
718e3744 95{
d62a17ae 96 struct prefix router_id;
718e3744 97
d62a17ae 98 zebra_router_id_update_read(zclient->ibuf, &router_id);
a39275d7 99
2dbe669b
DA		 100 if (BGP_DEBUG(zebra, ZEBRA))
101 zlog_debug("Rx Router Id update VRF %u Id %pFX", vrf_id,
102 &router_id);
a39275d7 103
d62a17ae 104 bgp_router_id_zebra_bump(vrf_id, &router_id);
105 return 0;
718e3744 106}
107
fb018d25 108/* Nexthop update message from zebra. */
121f9dee 109static int bgp_read_nexthop_update(ZAPI_CALLBACK_ARGS)
fb018d25 110{
121f9dee 111 bgp_parse_nexthop_update(cmd, vrf_id);
d62a17ae 112 return 0;
078430f6
DS		 113}
114
121f9dee 115static int bgp_read_import_check_update(ZAPI_CALLBACK_ARGS)
078430f6 116{
121f9dee 117 bgp_parse_nexthop_update(cmd, vrf_id);
d62a17ae 118 return 0;
fb018d25
DS		 119}
120
4a04e5f7 121/* Set or clear interface on which unnumbered neighbor is configured. This
122 * would in turn cause BGP to initiate or turn off IPv6 RAs on this
123 * interface.
124 */
d62a17ae 125static void bgp_update_interface_nbrs(struct bgp *bgp, struct interface *ifp,
126 struct interface *upd_ifp)
4a04e5f7 127{
d62a17ae 128 struct listnode *node, *nnode;
129 struct peer *peer;
130
131 for (ALL_LIST_ELEMENTS(bgp->peer, node, nnode, peer)) {
132 if (peer->conf_if && (strcmp(peer->conf_if, ifp->name) == 0)) {
133 if (upd_ifp) {
134 peer->ifp = upd_ifp;
135 bgp_zebra_initiate_radv(bgp, peer);
136 } else {
137 bgp_zebra_terminate_radv(bgp, peer);
138 peer->ifp = upd_ifp;
139 }
140 }
141 }
4a04e5f7 142}
143
d62a17ae 144static int bgp_read_fec_update(int command, struct zclient *zclient,
145 zebra_size_t length)
cd1964ff 146{
d62a17ae 147 bgp_parse_fec_update();
148 return 0;
cd1964ff
DS		 149}
150
d62a17ae 151static void bgp_start_interface_nbrs(struct bgp *bgp, struct interface *ifp)
a80beece 152{
d62a17ae 153 struct listnode *node, *nnode;
154 struct peer *peer;
155
156 for (ALL_LIST_ELEMENTS(bgp->peer, node, nnode, peer)) {
157 if (peer->conf_if && (strcmp(peer->conf_if, ifp->name) == 0)
feb17238 158 && !peer_established(peer)) {
d62a17ae 159 if (peer_active(peer))
160 BGP_EVENT_ADD(peer, BGP_Stop);
161 BGP_EVENT_ADD(peer, BGP_Start);
162 }
163 }
a80beece
DS		 164}
165
d62a17ae 166static void bgp_nbr_connected_add(struct bgp *bgp, struct nbr_connected *ifc)
a197c47c 167{
d62a17ae 168 struct listnode *node;
169 struct connected *connected;
170 struct interface *ifp;
171 struct prefix *p;
172
173 /* Kick-off the FSM for any relevant peers only if there is a
174 * valid local address on the interface.
175 */
176 ifp = ifc->ifp;
177 for (ALL_LIST_ELEMENTS_RO(ifp->connected, node, connected)) {
178 p = connected->address;
179 if (p->family == AF_INET6
180 && IN6_IS_ADDR_LINKLOCAL(&p->u.prefix6))
181 break;
182 }
183 if (!connected)
184 return;
185
186 bgp_start_interface_nbrs(bgp, ifp);
a197c47c
DS		 187}
188
d62a17ae 189static void bgp_nbr_connected_delete(struct bgp *bgp, struct nbr_connected *ifc,
190 int del)
a80beece 191{
d62a17ae 192 struct listnode *node, *nnode;
193 struct peer *peer;
194 struct interface *ifp;
195
196 for (ALL_LIST_ELEMENTS(bgp->peer, node, nnode, peer)) {
197 if (peer->conf_if
198 && (strcmp(peer->conf_if, ifc->ifp->name) == 0)) {
199 peer->last_reset = PEER_DOWN_NBR_ADDR_DEL;
200 BGP_EVENT_ADD(peer, BGP_Stop);
201 }
202 }
203 /* Free neighbor also, if we're asked to. */
204 if (del) {
205 ifp = ifc->ifp;
206 listnode_delete(ifp->nbr_connected, ifc);
207 nbr_connected_free(ifc);
208 }
a80beece
DS		 209}
210
3c3c3252 211static int bgp_ifp_destroy(struct interface *ifp)
718e3744 212{
d62a17ae 213 struct bgp *bgp;
718e3744 214
3c3c3252 215 bgp = bgp_lookup_by_vrf_id(ifp->vrf_id);
a4499b83 216
d62a17ae 217 if (BGP_DEBUG(zebra, ZEBRA))
3835984f 218 zlog_debug("Rx Intf del VRF %u IF %s", ifp->vrf_id, ifp->name);
a39275d7 219
0d020cd6 220 if (bgp) {
85751d1d 221 bgp_update_interface_nbrs(bgp, ifp, NULL);
0d020cd6
PR		 222 hook_call(bgp_vrf_status_changed, bgp, ifp);
223 }
64745052 224
6a69ac51
DS		 225 bgp_mac_del_mac_entry(ifp);
226
d62a17ae 227 return 0;
718e3744 228}
229
ddbf3e60 230static int bgp_ifp_up(struct interface *ifp)
718e3744 231{
d62a17ae 232 struct connected *c;
233 struct nbr_connected *nc;
234 struct listnode *node, *nnode;
235 struct bgp *bgp;
6aeb9e78 236
ddbf3e60 237 bgp = bgp_lookup_by_vrf_id(ifp->vrf_id);
718e3744 238
6a69ac51
DS		 239 bgp_mac_add_mac_entry(ifp);
240
d62a17ae 241 if (BGP_DEBUG(zebra, ZEBRA))
ddbf3e60 242 zlog_debug("Rx Intf up VRF %u IF %s", ifp->vrf_id, ifp->name);
ad4cbda1 243
85751d1d
DS		 244 if (!bgp)
245 return 0;
246
d62a17ae 247 for (ALL_LIST_ELEMENTS(ifp->connected, node, nnode, c))
248 bgp_connected_add(bgp, c);
718e3744 249
d62a17ae 250 for (ALL_LIST_ELEMENTS(ifp->nbr_connected, node, nnode, nc))
251 bgp_nbr_connected_add(bgp, nc);
a80beece 252
0d020cd6 253 hook_call(bgp_vrf_status_changed, bgp, ifp);
8761cd6d
DS		 254 bgp_nht_ifp_up(ifp);
255
d62a17ae 256 return 0;
718e3744 257}
258
b0b69e59 259static int bgp_ifp_down(struct interface *ifp)
718e3744 260{
d62a17ae 261 struct connected *c;
262 struct nbr_connected *nc;
263 struct listnode *node, *nnode;
264 struct bgp *bgp;
c19fe3c7 265 struct peer *peer;
6aeb9e78 266
b0b69e59 267 bgp = bgp_lookup_by_vrf_id(ifp->vrf_id);
718e3744 268
6a69ac51
DS		 269 bgp_mac_del_mac_entry(ifp);
270
d62a17ae 271 if (BGP_DEBUG(zebra, ZEBRA))
b0b69e59 272 zlog_debug("Rx Intf down VRF %u IF %s", ifp->vrf_id, ifp->name);
ad4cbda1 273
85751d1d
DS		 274 if (!bgp)
275 return 0;
276
d62a17ae 277 for (ALL_LIST_ELEMENTS(ifp->connected, node, nnode, c))
278 bgp_connected_delete(bgp, c);
718e3744 279
d62a17ae 280 for (ALL_LIST_ELEMENTS(ifp->nbr_connected, node, nnode, nc))
281 bgp_nbr_connected_delete(bgp, nc, 1);
a80beece 282
d62a17ae 283 /* Fast external-failover */
c19fe3c7 284 if (!CHECK_FLAG(bgp->flags, BGP_FLAG_NO_FAST_EXT_FAILOVER)) {
718e3744 285
d62a17ae 286 for (ALL_LIST_ELEMENTS(bgp->peer, node, nnode, peer)) {
50bd8995 287 /* Take down directly connected peers. */
c8d6f0d6 288 if ((peer->ttl != BGP_DEFAULT_TTL)
e2521429 289 && (peer->gtsm_hops != BGP_GTSM_HOPS_CONNECTED))
d62a17ae 290 continue;
718e3744 291
d62a17ae 292 if (ifp == peer->nexthop.ifp) {
293 BGP_EVENT_ADD(peer, BGP_Stop);
294 peer->last_reset = PEER_DOWN_IF_DOWN;
295 }
296 }
297 }
718e3744 298
0d020cd6 299 hook_call(bgp_vrf_status_changed, bgp, ifp);
8761cd6d
DS		 300 bgp_nht_ifp_down(ifp);
301
d62a17ae 302 return 0;
718e3744 303}
304
121f9dee 305static int bgp_interface_address_add(ZAPI_CALLBACK_ARGS)
718e3744 306{
d62a17ae 307 struct connected *ifc;
2f9123e0
DS		 308 struct bgp *bgp;
309
310 bgp = bgp_lookup_by_vrf_id(vrf_id);
d62a17ae 311
121f9dee 312 ifc = zebra_interface_address_read(cmd, zclient->ibuf, vrf_id);
d62a17ae 313
314 if (ifc == NULL)
315 return 0;
316
2dbe669b
DA		 317 if (bgp_debug_zebra(ifc->address))
318 zlog_debug("Rx Intf address add VRF %u IF %s addr %pFX", vrf_id,
319 ifc->ifp->name, ifc->address);
d62a17ae 320
85751d1d
DS		 321 if (!bgp)
322 return 0;
323
d62a17ae 324 if (if_is_operative(ifc->ifp)) {
d62a17ae 325 bgp_connected_add(bgp, ifc);
2f9123e0 326
d62a17ae 327 /* If we have learnt of any neighbors on this interface,
328 * check to kick off any BGP interface-based neighbors,
329 * but only if this is a link-local address.
330 */
331 if (IN6_IS_ADDR_LINKLOCAL(&ifc->address->u.prefix6)
332 && !list_isempty(ifc->ifp->nbr_connected))
333 bgp_start_interface_nbrs(bgp, ifc->ifp);
334 }
335
336 return 0;
718e3744 337}
338
121f9dee 339static int bgp_interface_address_delete(ZAPI_CALLBACK_ARGS)
718e3744 340{
d62a17ae 341 struct connected *ifc;
342 struct bgp *bgp;
6aeb9e78 343
2f9123e0 344 bgp = bgp_lookup_by_vrf_id(vrf_id);
2f9123e0 345
121f9dee 346 ifc = zebra_interface_address_read(cmd, zclient->ibuf, vrf_id);
718e3744 347
d62a17ae 348 if (ifc == NULL)
349 return 0;
718e3744 350
2dbe669b
DA		 351 if (bgp_debug_zebra(ifc->address))
352 zlog_debug("Rx Intf address del VRF %u IF %s addr %pFX", vrf_id,
353 ifc->ifp->name, ifc->address);
a39275d7 354
85751d1d 355 if (bgp && if_is_operative(ifc->ifp)) {
2f9123e0 356 bgp_connected_delete(bgp, ifc);
d62a17ae 357 }
718e3744 358
721c0857 359 connected_free(&ifc);
718e3744 360
d62a17ae 361 return 0;
718e3744 362}
363
121f9dee 364static int bgp_interface_nbr_address_add(ZAPI_CALLBACK_ARGS)
a80beece 365{
d62a17ae 366 struct nbr_connected *ifc = NULL;
367 struct bgp *bgp;
368
121f9dee 369 ifc = zebra_interface_nbr_address_read(cmd, zclient->ibuf, vrf_id);
d62a17ae 370
371 if (ifc == NULL)
372 return 0;
373
2dbe669b
DA		 374 if (bgp_debug_zebra(ifc->address))
375 zlog_debug("Rx Intf neighbor add VRF %u IF %s addr %pFX",
376 vrf_id, ifc->ifp->name, ifc->address);
d62a17ae 377
378 if (if_is_operative(ifc->ifp)) {
379 bgp = bgp_lookup_by_vrf_id(vrf_id);
380 if (bgp)
381 bgp_nbr_connected_add(bgp, ifc);
382 }
383
384 return 0;
a80beece
DS		 385}
386
121f9dee 387static int bgp_interface_nbr_address_delete(ZAPI_CALLBACK_ARGS)
a80beece 388{
d62a17ae 389 struct nbr_connected *ifc = NULL;
390 struct bgp *bgp;
6aeb9e78 391
121f9dee 392 ifc = zebra_interface_nbr_address_read(cmd, zclient->ibuf, vrf_id);
a80beece 393
d62a17ae 394 if (ifc == NULL)
395 return 0;
a80beece 396
2dbe669b
DA		 397 if (bgp_debug_zebra(ifc->address))
398 zlog_debug("Rx Intf neighbor del VRF %u IF %s addr %pFX",
399 vrf_id, ifc->ifp->name, ifc->address);
a80beece 400
d62a17ae 401 if (if_is_operative(ifc->ifp)) {
402 bgp = bgp_lookup_by_vrf_id(vrf_id);
403 if (bgp)
404 bgp_nbr_connected_delete(bgp, ifc, 0);
405 }
a80beece 406
d62a17ae 407 nbr_connected_free(ifc);
a80beece 408
d62a17ae 409 return 0;
a80beece
DS		 410}
411
bfcd43b2 412/* VRF update for an interface. */
121f9dee 413static int bgp_interface_vrf_update(ZAPI_CALLBACK_ARGS)
bfcd43b2 414{
d62a17ae 415 struct interface *ifp;
416 vrf_id_t new_vrf_id;
417 struct connected *c;
418 struct nbr_connected *nc;
419 struct listnode *node, *nnode;
420 struct bgp *bgp;
c19fe3c7 421 struct peer *peer;
bfcd43b2 422
d62a17ae 423 ifp = zebra_interface_vrf_update_read(zclient->ibuf, vrf_id,
424 &new_vrf_id);
425 if (!ifp)
426 return 0;
bfcd43b2 427
d62a17ae 428 if (BGP_DEBUG(zebra, ZEBRA) && ifp)
429 zlog_debug("Rx Intf VRF change VRF %u IF %s NewVRF %u", vrf_id,
430 ifp->name, new_vrf_id);
bfcd43b2 431
d62a17ae 432 bgp = bgp_lookup_by_vrf_id(vrf_id);
bfcd43b2 433
85751d1d
DS		 434 if (bgp) {
435 for (ALL_LIST_ELEMENTS(ifp->connected, node, nnode, c))
436 bgp_connected_delete(bgp, c);
bfcd43b2 437
85751d1d
DS		 438 for (ALL_LIST_ELEMENTS(ifp->nbr_connected, node, nnode, nc))
439 bgp_nbr_connected_delete(bgp, nc, 1);
bfcd43b2 440
85751d1d
DS		 441 /* Fast external-failover */
442 if (!CHECK_FLAG(bgp->flags, BGP_FLAG_NO_FAST_EXT_FAILOVER)) {
443 for (ALL_LIST_ELEMENTS(bgp->peer, node, nnode, peer)) {
c8d6f0d6 444 if ((peer->ttl != BGP_DEFAULT_TTL)
e2521429
DA		 445 && (peer->gtsm_hops
446 != BGP_GTSM_HOPS_CONNECTED))
85751d1d 447 continue;
bfcd43b2 448
85751d1d
DS		 449 if (ifp == peer->nexthop.ifp)
450 BGP_EVENT_ADD(peer, BGP_Stop);
451 }
d62a17ae 452 }
453 }
bfcd43b2 454
a36898e7 455 if_update_to_new_vrf(ifp, new_vrf_id);
bfcd43b2 456
d62a17ae 457 bgp = bgp_lookup_by_vrf_id(new_vrf_id);
458 if (!bgp)
459 return 0;
bfcd43b2 460
d62a17ae 461 for (ALL_LIST_ELEMENTS(ifp->connected, node, nnode, c))
462 bgp_connected_add(bgp, c);
bfcd43b2 463
d62a17ae 464 for (ALL_LIST_ELEMENTS(ifp->nbr_connected, node, nnode, nc))
465 bgp_nbr_connected_add(bgp, nc);
0d020cd6
PR		 466
467 hook_call(bgp_vrf_status_changed, bgp, ifp);
d62a17ae 468 return 0;
bfcd43b2 469}
470
718e3744 471/* Zebra route add and delete treatment. */
121f9dee 472static int zebra_read_route(ZAPI_CALLBACK_ARGS)
718e3744 473{
9de1f7ff 474 enum nexthop_types_t nhtype;
74489921
RW		 475 struct zapi_route api;
476 union g_addr nexthop;
9de1f7ff 477 ifindex_t ifindex;
74489921 478 int add, i;
d62a17ae 479 struct bgp *bgp;
480
481 bgp = bgp_lookup_by_vrf_id(vrf_id);
482 if (!bgp)
483 return 0;
484
74489921
RW		 485 if (zapi_route_decode(zclient->ibuf, &api) < 0)
486 return -1;
d62a17ae 487
74489921
RW		 488 /* we completely ignore srcdest routes for now. */
489 if (CHECK_FLAG(api.message, ZAPI_MESSAGE_SRCPFX))
490 return 0;
d62a17ae 491
74489921
RW		 492 /* ignore link-local address. */
493 if (api.prefix.family == AF_INET6
494 && IN6_IS_ADDR_LINKLOCAL(&api.prefix.u.prefix6))
495 return 0;
d62a17ae 496
74489921
RW		 497 nexthop = api.nexthops[0].gate;
498 ifindex = api.nexthops[0].ifindex;
9de1f7ff 499 nhtype = api.nexthops[0].type;
d62a17ae 500
121f9dee 501 add = (cmd == ZEBRA_REDISTRIBUTE_ROUTE_ADD);
74489921 502 if (add) {
d62a17ae 503 /*
504 * The ADD message is actually an UPDATE and there is no
505 * explicit DEL
506 * for a prior redistributed route, if any. So, perform an
507 * implicit
508 * DEL processing for the same redistributed route from any
509 * other
510 * source type.
511 */
512 for (i = 0; i < ZEBRA_ROUTE_MAX; i++) {
513 if (i != api.type)
74489921 514 bgp_redistribute_delete(bgp, &api.prefix, i,
d62a17ae 515 api.instance);
516 }
517
518 /* Now perform the add/update. */
74489921 519 bgp_redistribute_add(bgp, &api.prefix, &nexthop, ifindex,
957f74c3
DS		 520 nhtype, api.distance, api.metric, api.type,
521 api.instance, api.tag);
d62a17ae 522 } else {
74489921
RW		 523 bgp_redistribute_delete(bgp, &api.prefix, api.type,
524 api.instance);
a39275d7 525 }
d62a17ae 526
74489921 527 if (bgp_debug_zebra(&api.prefix)) {
2dbe669b 528 char buf[PREFIX_STRLEN];
74489921 529
77e62f2b 530 if (add) {
2dbe669b
DA		 531 inet_ntop(api.prefix.family, &nexthop, buf,
532 sizeof(buf));
77e62f2b 533 zlog_debug(
801bb996 534 "Rx route ADD VRF %u %s[%d] %pFX nexthop %s (type %d if %u) metric %u distance %u tag %" ROUTE_TAG_PRI,
77e62f2b 535 vrf_id, zebra_route_string(api.type),
2dbe669b 536 api.instance, &api.prefix, buf, nhtype, ifindex,
801bb996 537 api.metric, api.distance, api.tag);
77e62f2b 538 } else {
6bdbcbf1 539 zlog_debug("Rx route DEL VRF %u %s[%d] %pFX", vrf_id,
2dbe669b 540 zebra_route_string(api.type), api.instance,
6bdbcbf1 541 &api.prefix);
77e62f2b 542 }
d62a17ae 543 }
544
545 return 0;
718e3744 546}
6b0655a2 547
d62a17ae 548struct interface *if_lookup_by_ipv4(struct in_addr *addr, vrf_id_t vrf_id)
718e3744 549{
f4e14fdb 550 struct vrf *vrf;
d62a17ae 551 struct listnode *cnode;
552 struct interface *ifp;
553 struct connected *connected;
554 struct prefix_ipv4 p;
555 struct prefix *cp;
556
f4e14fdb
RW		 557 vrf = vrf_lookup_by_id(vrf_id);
558 if (!vrf)
559 return NULL;
560
d62a17ae 561 p.family = AF_INET;
562 p.prefix = *addr;
563 p.prefixlen = IPV4_MAX_BITLEN;
564
451fda4f 565 FOR_ALL_INTERFACES (vrf, ifp) {
d62a17ae 566 for (ALL_LIST_ELEMENTS_RO(ifp->connected, cnode, connected)) {
567 cp = connected->address;
568
569 if (cp->family == AF_INET)
570 if (prefix_match(cp, (struct prefix *)&p))
571 return ifp;
572 }
718e3744 573 }
d62a17ae 574 return NULL;
718e3744 575}
576
d62a17ae 577struct interface *if_lookup_by_ipv4_exact(struct in_addr *addr, vrf_id_t vrf_id)
718e3744 578{
f4e14fdb 579 struct vrf *vrf;
d62a17ae 580 struct listnode *cnode;
581 struct interface *ifp;
582 struct connected *connected;
583 struct prefix *cp;
584
f4e14fdb
RW		 585 vrf = vrf_lookup_by_id(vrf_id);
586 if (!vrf)
587 return NULL;
588
451fda4f 589 FOR_ALL_INTERFACES (vrf, ifp) {
d62a17ae 590 for (ALL_LIST_ELEMENTS_RO(ifp->connected, cnode, connected)) {
591 cp = connected->address;
592
593 if (cp->family == AF_INET)
594 if (IPV4_ADDR_SAME(&cp->u.prefix4, addr))
595 return ifp;
596 }
718e3744 597 }
d62a17ae 598 return NULL;
718e3744 599}
600
d62a17ae 601struct interface *if_lookup_by_ipv6(struct in6_addr *addr, ifindex_t ifindex,
602 vrf_id_t vrf_id)
718e3744 603{
f4e14fdb 604 struct vrf *vrf;
d62a17ae 605 struct listnode *cnode;
606 struct interface *ifp;
607 struct connected *connected;
608 struct prefix_ipv6 p;
609 struct prefix *cp;
610
f4e14fdb
RW		 611 vrf = vrf_lookup_by_id(vrf_id);
612 if (!vrf)
613 return NULL;
614
d62a17ae 615 p.family = AF_INET6;
616 p.prefix = *addr;
617 p.prefixlen = IPV6_MAX_BITLEN;
618
451fda4f 619 FOR_ALL_INTERFACES (vrf, ifp) {
d62a17ae 620 for (ALL_LIST_ELEMENTS_RO(ifp->connected, cnode, connected)) {
621 cp = connected->address;
622
623 if (cp->family == AF_INET6)
624 if (prefix_match(cp, (struct prefix *)&p)) {
625 if (IN6_IS_ADDR_LINKLOCAL(
626 &cp->u.prefix6)) {
627 if (ifindex == ifp->ifindex)
628 return ifp;
629 } else
630 return ifp;
631 }
632 }
718e3744 633 }
d62a17ae 634 return NULL;
718e3744 635}
636
d62a17ae 637struct interface *if_lookup_by_ipv6_exact(struct in6_addr *addr,
638 ifindex_t ifindex, vrf_id_t vrf_id)
718e3744 639{
f4e14fdb 640 struct vrf *vrf;
d62a17ae 641 struct listnode *cnode;
642 struct interface *ifp;
643 struct connected *connected;
644 struct prefix *cp;
645
f4e14fdb
RW		 646 vrf = vrf_lookup_by_id(vrf_id);
647 if (!vrf)
648 return NULL;
649
451fda4f 650 FOR_ALL_INTERFACES (vrf, ifp) {
d62a17ae 651 for (ALL_LIST_ELEMENTS_RO(ifp->connected, cnode, connected)) {
652 cp = connected->address;
653
654 if (cp->family == AF_INET6)
655 if (IPV6_ADDR_SAME(&cp->u.prefix6, addr)) {
656 if (IN6_IS_ADDR_LINKLOCAL(
657 &cp->u.prefix6)) {
658 if (ifindex == ifp->ifindex)
659 return ifp;
660 } else
661 return ifp;
662 }
663 }
718e3744 664 }
d62a17ae 665 return NULL;
718e3744 666}
667
d62a17ae 668static int if_get_ipv6_global(struct interface *ifp, struct in6_addr *addr)
718e3744 669{
d62a17ae 670 struct listnode *cnode;
671 struct connected *connected;
672 struct prefix *cp;
673
674 for (ALL_LIST_ELEMENTS_RO(ifp->connected, cnode, connected)) {
675 cp = connected->address;
676
677 if (cp->family == AF_INET6)
678 if (!IN6_IS_ADDR_LINKLOCAL(&cp->u.prefix6)) {
679 memcpy(addr, &cp->u.prefix6, IPV6_MAX_BYTELEN);
680 return 1;
681 }
682 }
683 return 0;
718e3744 684}
685
dac42f2e 686static bool if_get_ipv6_local(struct interface *ifp, struct in6_addr *addr)
718e3744 687{
d62a17ae 688 struct listnode *cnode;
689 struct connected *connected;
690 struct prefix *cp;
691
692 for (ALL_LIST_ELEMENTS_RO(ifp->connected, cnode, connected)) {
693 cp = connected->address;
694
695 if (cp->family == AF_INET6)
696 if (IN6_IS_ADDR_LINKLOCAL(&cp->u.prefix6)) {
697 memcpy(addr, &cp->u.prefix6, IPV6_MAX_BYTELEN);
dac42f2e 698 return true;
d62a17ae 699 }
700 }
dac42f2e 701 return false;
718e3744 702}
718e3744 703
d62a17ae 704static int if_get_ipv4_address(struct interface *ifp, struct in_addr *addr)
6ee06fa9 705{
d62a17ae 706 struct listnode *cnode;
707 struct connected *connected;
708 struct prefix *cp;
709
710 for (ALL_LIST_ELEMENTS_RO(ifp->connected, cnode, connected)) {
711 cp = connected->address;
712 if ((cp->family == AF_INET)
713 && !ipv4_martian(&(cp->u.prefix4))) {
714 *addr = cp->u.prefix4;
715 return 1;
716 }
717 }
718 return 0;
6ee06fa9
PM		 719}
720
17cdd31e
DS		 721
722bool bgp_zebra_nexthop_set(union sockunion *local, union sockunion *remote,
723 struct bgp_nexthop *nexthop, struct peer *peer)
718e3744 724{
d62a17ae 725 int ret = 0;
726 struct interface *ifp = NULL;
dac42f2e 727 bool v6_ll_avail = true;
d62a17ae 728
729 memset(nexthop, 0, sizeof(struct bgp_nexthop));
730
731 if (!local)
17cdd31e 732 return false;
d62a17ae 733 if (!remote)
17cdd31e 734 return false;
d62a17ae 735
736 if (local->sa.sa_family == AF_INET) {
737 nexthop->v4 = local->sin.sin_addr;
738 if (peer->update_if)
739 ifp = if_lookup_by_name(peer->update_if,
a36898e7 740 peer->bgp->vrf_id);
d62a17ae 741 else
742 ifp = if_lookup_by_ipv4_exact(&local->sin.sin_addr,
743 peer->bgp->vrf_id);
718e3744 744 }
d62a17ae 745 if (local->sa.sa_family == AF_INET6) {
8f2b2139 746 memcpy(&nexthop->v6_global, &local->sin6.sin6_addr, IPV6_MAX_BYTELEN);
d62a17ae 747 if (IN6_IS_ADDR_LINKLOCAL(&local->sin6.sin6_addr)) {
748 if (peer->conf_if || peer->ifname)
749 ifp = if_lookup_by_name(peer->conf_if
750 ? peer->conf_if
751 : peer->ifname,
a36898e7 752 peer->bgp->vrf_id);
abe68054
PG		 753 else if (peer->update_if)
754 ifp = if_lookup_by_name(peer->update_if,
755 peer->bgp->vrf_id);
d62a17ae 756 } else if (peer->update_if)
757 ifp = if_lookup_by_name(peer->update_if,
a36898e7 758 peer->bgp->vrf_id);
d62a17ae 759 else
760 ifp = if_lookup_by_ipv6_exact(&local->sin6.sin6_addr,
761 local->sin6.sin6_scope_id,
762 peer->bgp->vrf_id);
718e3744 763 }
d62a17ae 764
17cdd31e
DS		 765 if (!ifp) {
766 /*
767 * BGP views do not currently get proper data
768 * from zebra( when attached ) to be able to
769 * properly resolve nexthops, so give this
770 * instance type a pass.
771 */
772 if (peer->bgp->inst_type == BGP_INSTANCE_TYPE_VIEW)
773 return true;
774 /*
775 * If we have no interface data but we have established
776 * some connection w/ zebra than something has gone
777 * terribly terribly wrong here, so say this failed
778 * If we do not any zebra connection then not
779 * having a ifp pointer is ok.
780 */
781 return zclient_num_connects ? false : true;
782 }
d62a17ae 783
784 nexthop->ifp = ifp;
785
786 /* IPv4 connection, fetch and store IPv6 local address(es) if any. */
787 if (local->sa.sa_family == AF_INET) {
788 /* IPv6 nexthop*/
789 ret = if_get_ipv6_global(ifp, &nexthop->v6_global);
790
791 if (!ret) {
792 /* There is no global nexthop. Use link-local address as
793 * both the
794 * global and link-local nexthop. In this scenario, the
795 * expectation
796 * for interop is that the network admin would use a
797 * route-map to
798 * specify the global IPv6 nexthop.
799 */
dac42f2e
DS		 800 v6_ll_avail =
801 if_get_ipv6_local(ifp, &nexthop->v6_global);
d62a17ae 802 memcpy(&nexthop->v6_local, &nexthop->v6_global,
803 IPV6_MAX_BYTELEN);
804 } else
dac42f2e
DS		 805 v6_ll_avail =
806 if_get_ipv6_local(ifp, &nexthop->v6_local);
d62a17ae 807
dac42f2e
DS		 808 /*
809 * If we are a v4 connection and we are not doing unnumbered
810 * not having a v6 LL address is ok
811 */
812 if (!v6_ll_avail && !peer->conf_if)
813 v6_ll_avail = true;
d62a17ae 814 if (if_lookup_by_ipv4(&remote->sin.sin_addr, peer->bgp->vrf_id))
815 peer->shared_network = 1;
816 else
817 peer->shared_network = 0;
718e3744 818 }
718e3744 819
d62a17ae 820 /* IPv6 connection, fetch and store IPv4 local address if any. */
821 if (local->sa.sa_family == AF_INET6) {
822 struct interface *direct = NULL;
823
824 /* IPv4 nexthop. */
825 ret = if_get_ipv4_address(ifp, &nexthop->v4);
975a328e 826 if (!ret && peer->local_id.s_addr != INADDR_ANY)
d62a17ae 827 nexthop->v4 = peer->local_id;
828
829 /* Global address*/
830 if (!IN6_IS_ADDR_LINKLOCAL(&local->sin6.sin6_addr)) {
831 memcpy(&nexthop->v6_global, &local->sin6.sin6_addr,
832 IPV6_MAX_BYTELEN);
833
834 /* If directory connected set link-local address. */
835 direct = if_lookup_by_ipv6(&remote->sin6.sin6_addr,
836 remote->sin6.sin6_scope_id,
837 peer->bgp->vrf_id);
838 if (direct)
dac42f2e
DS		 839 v6_ll_avail = if_get_ipv6_local(
840 ifp, &nexthop->v6_local);
d62a17ae 841 } else
842 /* Link-local address. */
843 {
844 ret = if_get_ipv6_global(ifp, &nexthop->v6_global);
845
846 /* If there is no global address. Set link-local
847 address as
848 global. I know this break RFC specification... */
849 /* In this scenario, the expectation for interop is that
850 * the
851 * network admin would use a route-map to specify the
852 * global
853 * IPv6 nexthop.
854 */
855 if (!ret)
856 memcpy(&nexthop->v6_global,
857 &local->sin6.sin6_addr,
858 IPV6_MAX_BYTELEN);
859 /* Always set the link-local address */
860 memcpy(&nexthop->v6_local, &local->sin6.sin6_addr,
861 IPV6_MAX_BYTELEN);
862 }
863
864 if (IN6_IS_ADDR_LINKLOCAL(&local->sin6.sin6_addr)
865 || if_lookup_by_ipv6(&remote->sin6.sin6_addr,
866 remote->sin6.sin6_scope_id,
867 peer->bgp->vrf_id))
868 peer->shared_network = 1;
869 else
870 peer->shared_network = 0;
871 }
718e3744 872
d62a17ae 873/* KAME stack specific treatment. */
718e3744 874#ifdef KAME
d62a17ae 875 if (IN6_IS_ADDR_LINKLOCAL(&nexthop->v6_global)
876 && IN6_LINKLOCAL_IFINDEX(nexthop->v6_global)) {
877 SET_IN6_LINKLOCAL_IFINDEX(nexthop->v6_global, 0);
878 }
879 if (IN6_IS_ADDR_LINKLOCAL(&nexthop->v6_local)
880 && IN6_LINKLOCAL_IFINDEX(nexthop->v6_local)) {
881 SET_IN6_LINKLOCAL_IFINDEX(nexthop->v6_local, 0);
882 }
718e3744 883#endif /* KAME */
e33a4880 884
d62a17ae 885 /* If we have identified the local interface, there is no error for now.
886 */
dac42f2e 887 return v6_ll_avail;
718e3744 888}
889
18ee8310 890static struct in6_addr *
40381db7 891bgp_path_info_to_ipv6_nexthop(struct bgp_path_info *path, ifindex_t *ifindex)
73ac8160 892{
d62a17ae 893 struct in6_addr *nexthop = NULL;
894
895 /* Only global address nexthop exists. */
dc94fe42
RW		 896 if (path->attr->mp_nexthop_len == BGP_ATTR_NHLEN_IPV6_GLOBAL
897 || path->attr->mp_nexthop_len == BGP_ATTR_NHLEN_VPNV6_GLOBAL) {
40381db7 898 nexthop = &path->attr->mp_nexthop_global;
77e62f2b 899 if (IN6_IS_ADDR_LINKLOCAL(nexthop))
40381db7 900 *ifindex = path->attr->nh_ifindex;
77e62f2b 901 }
d62a17ae 902
903 /* If both global and link-local address present. */
dc94fe42
RW		 904 if (path->attr->mp_nexthop_len == BGP_ATTR_NHLEN_IPV6_GLOBAL_AND_LL
905 || path->attr->mp_nexthop_len
906 == BGP_ATTR_NHLEN_VPNV6_GLOBAL_AND_LL) {
d62a17ae 907 /* Check if route-map is set to prefer global over link-local */
40381db7
DS		 908 if (path->attr->mp_nexthop_prefer_global) {
909 nexthop = &path->attr->mp_nexthop_global;
77e62f2b 910 if (IN6_IS_ADDR_LINKLOCAL(nexthop))
40381db7 911 *ifindex = path->attr->nh_ifindex;
77e62f2b 912 } else {
d62a17ae 913 /* Workaround for Cisco's nexthop bug. */
914 if (IN6_IS_ADDR_UNSPECIFIED(
40381db7 915 &path->attr->mp_nexthop_global)
ab0e0f73 916 && path->peer->su_remote
40381db7 917 && path->peer->su_remote->sa.sa_family
59a0f1cb 918 == AF_INET6) {
d62a17ae 919 nexthop =
40381db7 920 &path->peer->su_remote->sin6.sin6_addr;
77e62f2b 921 if (IN6_IS_ADDR_LINKLOCAL(nexthop))
40381db7 922 *ifindex = path->peer->nexthop.ifp
59a0f1cb 923 ->ifindex;
77e62f2b 924 } else {
40381db7 925 nexthop = &path->attr->mp_nexthop_local;
77e62f2b 926 if (IN6_IS_ADDR_LINKLOCAL(nexthop))
40381db7 927 *ifindex = path->attr->nh_lla_ifindex;
77e62f2b 928 }
d62a17ae 929 }
930 }
931
932 return nexthop;
73ac8160
DS		 933}
934
b8685f9b 935static bool bgp_table_map_apply(struct route_map *map, const struct prefix *p,
3dc339cd 936 struct bgp_path_info *path)
73ac8160 937{
b4cb15c6
DL		 938 route_map_result_t ret;
939
1782514f 940 ret = route_map_apply(map, p, path);
40381db7 941 bgp_attr_flush(path->attr);
b4cb15c6
DL		 942
943 if (ret != RMAP_DENYMATCH)
3dc339cd 944 return true;
d62a17ae 945
946 if (bgp_debug_zebra(p)) {
947 if (p->family == AF_INET) {
d62a17ae 948 zlog_debug(
c0d72166
DS		 949 "Zebra rmap deny: IPv4 route %pFX nexthop %pI4",
950 p, &path->attr->nexthop);
d62a17ae 951 }
952 if (p->family == AF_INET6) {
953 char buf[2][INET6_ADDRSTRLEN];
77e62f2b 954 ifindex_t ifindex;
955 struct in6_addr *nexthop;
956
40381db7 957 nexthop = bgp_path_info_to_ipv6_nexthop(path, &ifindex);
d62a17ae 958 zlog_debug(
8228a9a7
DS		 959 "Zebra rmap deny: IPv6 route %pFX nexthop %s",
960 p,
6b9265a3
DA		 961 nexthop ? inet_ntop(AF_INET6, nexthop, buf[1],
962 sizeof(buf[1]))
963 : inet_ntop(AF_INET,
964 &path->attr->nexthop,
965 buf[1], sizeof(buf[1])));
d62a17ae 966 }
967 }
3dc339cd 968 return false;
73ac8160
DS		 969}
970
b98f7728
PG		 971static struct thread *bgp_tm_thread_connect;
972static bool bgp_tm_status_connected;
31c28cd7
PG		 973static bool bgp_tm_chunk_obtained;
974#define BGP_FLOWSPEC_TABLE_CHUNK 100000
975static uint32_t bgp_tm_min, bgp_tm_max, bgp_tm_chunk_size;
6818e7e5 976struct bgp *bgp_tm_bgp;
b98f7728
PG		 977
978static int bgp_zebra_tm_connect(struct thread *t)
979{
980 struct zclient *zclient;
981 int delay = 10, ret = 0;
982
983 zclient = THREAD_ARG(t);
984 if (bgp_tm_status_connected && zclient->sock > 0)
985 delay = 60;
986 else {
987 bgp_tm_status_connected = false;
988 ret = tm_table_manager_connect(zclient);
989 }
990 if (ret < 0) {
b7cd3069 991 zlog_info("Error connecting to table manager!");
b98f7728
PG		 992 bgp_tm_status_connected = false;
993 } else {
994 if (!bgp_tm_status_connected)
995 zlog_debug("Connecting to table manager. Success");
996 bgp_tm_status_connected = true;
31c28cd7
PG		 997 if (!bgp_tm_chunk_obtained) {
998 if (bgp_zebra_get_table_range(bgp_tm_chunk_size,
999 &bgp_tm_min,
6818e7e5 1000 &bgp_tm_max) >= 0) {
31c28cd7 1001 bgp_tm_chunk_obtained = true;
6818e7e5
PG		 1002 /* parse non installed entries */
1003 bgp_zebra_announce_table(bgp_tm_bgp, AFI_IP, SAFI_FLOWSPEC);
1004 }
31c28cd7 1005 }
b98f7728
PG		 1006 }
1007 thread_add_timer(bm->master, bgp_zebra_tm_connect, zclient, delay,
1008 &bgp_tm_thread_connect);
1009 return 0;
1010}
1011
6818e7e5
PG		 1012bool bgp_zebra_tm_chunk_obtained(void)
1013{
1014 return bgp_tm_chunk_obtained;
1015}
1016
31c28cd7
PG		 1017uint32_t bgp_zebra_tm_get_id(void)
1018{
1019 static int table_id;
1020
1021 if (!bgp_tm_chunk_obtained)
1022 return ++table_id;
1023 return bgp_tm_min++;
1024}
1025
6818e7e5 1026void bgp_zebra_init_tm_connect(struct bgp *bgp)
b98f7728
PG		 1027{
1028 int delay = 1;
1029
1030 /* if already set, do nothing
1031 */
1032 if (bgp_tm_thread_connect != NULL)
1033 return;
1034 bgp_tm_status_connected = false;
31c28cd7
PG		 1035 bgp_tm_chunk_obtained = false;
1036 bgp_tm_min = bgp_tm_max = 0;
1037 bgp_tm_chunk_size = BGP_FLOWSPEC_TABLE_CHUNK;
6818e7e5 1038 bgp_tm_bgp = bgp;
b98f7728
PG		 1039 thread_add_timer(bm->master, bgp_zebra_tm_connect, zclient, delay,
1040 &bgp_tm_thread_connect);
1041}
1042
1043int bgp_zebra_get_table_range(uint32_t chunk_size,
1044 uint32_t *start, uint32_t *end)
1045{
1046 int ret;
1047
1048 if (!bgp_tm_status_connected)
1049 return -1;
1050 ret = tm_get_table_chunk(zclient, chunk_size, start, end);
1051 if (ret < 0) {
e50f7cfd 1052 flog_err(EC_BGP_TABLE_CHUNK,
1c50c1c0 1053 "BGP: Error getting table chunk %u", chunk_size);
b98f7728
PG		 1054 return -1;
1055 }
1056 zlog_info("BGP: Table Manager returns range from chunk %u is [%u %u]",
1057 chunk_size, *start, *end);
1058 return 0;
1059}
1060
3dc339cd
DA		 1061static bool update_ipv4nh_for_route_install(int nh_othervrf, struct bgp *nh_bgp,
1062 struct in_addr *nexthop,
1063 struct attr *attr, bool is_evpn,
1064 struct zapi_nexthop *api_nh)
77e62f2b 1065{
1066 api_nh->gate.ipv4 = *nexthop;
e1e71450 1067 api_nh->vrf_id = nh_bgp->vrf_id;
77e62f2b 1068
1069 /* Need to set fields appropriately for EVPN routes imported into
1070 * a VRF (which are programmed as onlink on l3-vni SVI) as well as
1071 * connected routes leaked into a VRF.
1072 */
e1e71450 1073 if (is_evpn) {
a2299aba
AD		 1074
1075 /*
1076 * If the nexthop is EVPN overlay index gateway IP,
1077 * treat the nexthop as NEXTHOP_TYPE_IPV4
1078 * Else, mark the nexthop as onlink.
1079 */
1080 if (attr->evpn_overlay.type == OVERLAY_INDEX_GATEWAY_IP)
1081 api_nh->type = NEXTHOP_TYPE_IPV4;
1082 else {
1083 api_nh->type = NEXTHOP_TYPE_IPV4_IFINDEX;
1084 SET_FLAG(api_nh->flags, ZAPI_NEXTHOP_FLAG_ONLINK);
1085 api_nh->ifindex = nh_bgp->l3vni_svi_ifindex;
1086 }
e1e71450 1087 } else if (nh_othervrf &&
77e62f2b 1088 api_nh->gate.ipv4.s_addr == INADDR_ANY) {
1089 api_nh->type = NEXTHOP_TYPE_IFINDEX;
1090 api_nh->ifindex = attr->nh_ifindex;
1091 } else
1092 api_nh->type = NEXTHOP_TYPE_IPV4;
1093
3dc339cd 1094 return true;
77e62f2b 1095}
1096
3dc339cd
DA		 1097static bool update_ipv6nh_for_route_install(int nh_othervrf, struct bgp *nh_bgp,
1098 struct in6_addr *nexthop,
1099 ifindex_t ifindex,
1100 struct bgp_path_info *pi,
1101 struct bgp_path_info *best_pi,
1102 bool is_evpn,
1103 struct zapi_nexthop *api_nh)
77e62f2b 1104{
1105 struct attr *attr;
1106
40381db7 1107 attr = pi->attr;
e1e71450 1108 api_nh->vrf_id = nh_bgp->vrf_id;
77e62f2b 1109
e1e71450 1110 if (is_evpn) {
a2299aba
AD		 1111
1112 /*
1113 * If the nexthop is EVPN overlay index gateway IP,
1114 * treat the nexthop as NEXTHOP_TYPE_IPV4
1115 * Else, mark the nexthop as onlink.
1116 */
1117 if (attr->evpn_overlay.type == OVERLAY_INDEX_GATEWAY_IP)
1118 api_nh->type = NEXTHOP_TYPE_IPV6;
1119 else {
1120 api_nh->type = NEXTHOP_TYPE_IPV6_IFINDEX;
1121 SET_FLAG(api_nh->flags, ZAPI_NEXTHOP_FLAG_ONLINK);
1122 api_nh->ifindex = nh_bgp->l3vni_svi_ifindex;
1123 }
e1e71450 1124 } else if (nh_othervrf) {
77e62f2b 1125 if (IN6_IS_ADDR_UNSPECIFIED(nexthop)) {
1126 api_nh->type = NEXTHOP_TYPE_IFINDEX;
1127 api_nh->ifindex = attr->nh_ifindex;
1128 } else if (IN6_IS_ADDR_LINKLOCAL(nexthop)) {
1129 if (ifindex == 0)
3dc339cd 1130 return false;
77e62f2b 1131 api_nh->type = NEXTHOP_TYPE_IPV6_IFINDEX;
1132 api_nh->ifindex = ifindex;
1133 } else {
1134 api_nh->type = NEXTHOP_TYPE_IPV6;
1135 api_nh->ifindex = 0;
1136 }
1137 } else {
1138 if (IN6_IS_ADDR_LINKLOCAL(nexthop)) {
40381db7
DS		 1139 if (pi == best_pi
1140 && attr->mp_nexthop_len
1141 == BGP_ATTR_NHLEN_IPV6_GLOBAL_AND_LL)
1142 if (pi->peer->nexthop.ifp)
1143 ifindex =
1144 pi->peer->nexthop.ifp->ifindex;
77e62f2b 1145 if (!ifindex) {
40381db7
DS		 1146 if (pi->peer->conf_if)
1147 ifindex = pi->peer->ifp->ifindex;
1148 else if (pi->peer->ifname)
77e62f2b 1149 ifindex = ifname2ifindex(
40381db7
DS		 1150 pi->peer->ifname,
1151 pi->peer->bgp->vrf_id);
1152 else if (pi->peer->nexthop.ifp)
1153 ifindex =
1154 pi->peer->nexthop.ifp->ifindex;
77e62f2b 1155 }
1156
1157 if (ifindex == 0)
3dc339cd 1158 return false;
77e62f2b 1159 api_nh->type = NEXTHOP_TYPE_IPV6_IFINDEX;
1160 api_nh->ifindex = ifindex;
1161 } else {
1162 api_nh->type = NEXTHOP_TYPE_IPV6;
1163 api_nh->ifindex = 0;
1164 }
1165 }
c2ca3e25
PG		 1166 if (nexthop)
1167 api_nh->gate.ipv6 = *nexthop;
77e62f2b 1168
3dc339cd 1169 return true;
77e62f2b 1170}
1171
f7e1c681 1172static bool bgp_zebra_use_nhop_weighted(struct bgp *bgp, struct attr *attr,
1173 uint64_t tot_bw, uint32_t *nh_weight)
4e30bc2b 1174{
f7e1c681 1175 uint32_t bw;
1176 uint64_t tmp;
1177
1178 bw = attr->link_bw;
1179 /* zero link-bandwidth and link-bandwidth not present are treated
1180 * as the same situation.
1181 */
1182 if (!bw) {
1183 /* the only situations should be if we're either told
1184 * to skip or use default weight.
1185 */
1186 if (bgp->lb_handling == BGP_LINK_BW_SKIP_MISSING)
1187 return false;
1188 *nh_weight = BGP_ZEBRA_DEFAULT_NHOP_WEIGHT;
1189 } else {
1190 tmp = (uint64_t)bw * 100;
1191 *nh_weight = ((uint32_t)(tmp / tot_bw));
1192 }
1193
1194 return true;
4e30bc2b 1195}
1196
9bcb3eef 1197void bgp_zebra_announce(struct bgp_dest *dest, const struct prefix *p,
4b7e6066 1198 struct bgp_path_info *info, struct bgp *bgp, afi_t afi,
d62a17ae 1199 safi_t safi)
718e3744 1200{
7cc27d41 1201 struct zapi_route api = { 0 };
9913029c 1202 struct zapi_nexthop *api_nh;
2ad4f093 1203 int nh_family;
a74e593b 1204 unsigned int valid_nh_count = 0;
2ad4f093 1205 int has_valid_label = 0;
1a9cb083 1206 bool allow_recursion = false;
53a4de82 1207 int has_valid_sid = 0;
d7c0a89a 1208 uint8_t distance;
d62a17ae 1209 struct peer *peer;
4b7e6066 1210 struct bgp_path_info *mpinfo;
d7c0a89a 1211 uint32_t metric;
b4cb15c6 1212 struct attr local_attr;
4b7e6066
DS		 1213 struct bgp_path_info local_info;
1214 struct bgp_path_info *mpinfo_cp = &local_info;
d62a17ae 1215 route_tag_t tag;
1216 mpls_label_t label;
ddb5b488 1217 int nh_othervrf = 0;
3f54c705 1218 bool is_evpn;
06f16b2c 1219 bool nh_updated = false;
4e30bc2b 1220 bool do_wt_ecmp;
1221 uint64_t cum_bw = 0;
6348981a
AK		 1222 uint32_t nhg_id = 0;
1223 bool is_add;
d62a17ae 1224
1225 /* Don't try to install if we're not connected to Zebra or Zebra doesn't
1226 * know of this instance.
1227 */
1228 if (!bgp_install_info_to_zebra(bgp))
1229 return;
1230
d62a17ae 1231 if (bgp->main_zebra_update_hold)
1232 return;
1233
d90b788e 1234 if (safi == SAFI_FLOWSPEC) {
9bcb3eef
DS		 1235 bgp_pbr_update_entry(bgp, bgp_dest_get_prefix(dest), info, afi,
1236 safi, true);
d90b788e
A		 1237 return;
1238 }
529efa23 1239
ddb5b488
PZ		 1240 /*
1241 * vrf leaking support (will have only one nexthop)
1242 */
1243 if (info->extra && info->extra->bgp_orig)
1244 nh_othervrf = 1;
1245
9913029c 1246 /* Make Zebra API structure. */
9913029c
RW		 1247 api.vrf_id = bgp->vrf_id;
1248 api.type = ZEBRA_ROUTE_BGP;
1249 api.safi = safi;
1250 api.prefix = *p;
1251 SET_FLAG(api.message, ZAPI_MESSAGE_NEXTHOP);
1252
d62a17ae 1253 peer = info->peer;
1254
ddb5b488
PZ		 1255 if (info->type == ZEBRA_ROUTE_BGP
1256 && info->sub_type == BGP_ROUTE_IMPORTED) {
1257
1ec90b5e 1258 /* Obtain peer from parent */
1259 if (info->extra && info->extra->parent)
4b7e6066
DS		 1260 peer = ((struct bgp_path_info *)(info->extra->parent))
1261 ->peer;
ddb5b488
PZ		 1262 }
1263
d62a17ae 1264 tag = info->attr->tag;
1265
88493076 1266 /* If the route's source is EVPN, flag as such. */
77e62f2b 1267 is_evpn = is_route_parent_evpn(info);
1268 if (is_evpn)
90264d64 1269 SET_FLAG(api.flags, ZEBRA_FLAG_EVPN_ROUTE);
d3135ba3 1270
d62a17ae 1271 if (peer->sort == BGP_PEER_IBGP || peer->sort == BGP_PEER_CONFED
1272 || info->sub_type == BGP_ROUTE_AGGREGATE) {
9913029c 1273 SET_FLAG(api.flags, ZEBRA_FLAG_IBGP);
4e8b02f4 1274 SET_FLAG(api.flags, ZEBRA_FLAG_ALLOW_RECURSION);
718e3744 1275 }
a39275d7 1276
c8d6f0d6 1277 if ((peer->sort == BGP_PEER_EBGP && peer->ttl != BGP_DEFAULT_TTL)
d62a17ae 1278 || CHECK_FLAG(peer->flags, PEER_FLAG_DISABLE_CONNECTED_CHECK)
892fedb6 1279 || CHECK_FLAG(bgp->flags, BGP_FLAG_DISABLE_NH_CONNECTED_CHK))
d62a17ae 1280
1a9cb083 1281 allow_recursion = true;
d62a17ae 1282
951745bd
PG		 1283 if (info->attr->rmap_table_id) {
1284 SET_FLAG(api.message, ZAPI_MESSAGE_TABLEID);
1285 api.tableid = info->attr->rmap_table_id;
1286 }
1287
ef3e0d04
SM		 1288 if (CHECK_FLAG(info->attr->flag, ATTR_FLAG_BIT(BGP_ATTR_SRTE_COLOR)))
1289 SET_FLAG(api.message, ZAPI_MESSAGE_SRTE);
1290
2ad4f093
RW		 1291 /* Metric is currently based on the best-path only */
1292 metric = info->attr->med;
4e30bc2b 1293
1294 /* Determine if we're doing weighted ECMP or not */
f7e1c681 1295 do_wt_ecmp = bgp_path_info_mpath_chkwtd(bgp, info);
4e30bc2b 1296 if (do_wt_ecmp)
1297 cum_bw = bgp_path_info_mpath_cumbw(info);
1298
6348981a 1299 /* EVPN MAC-IP routes are installed with a L3 NHG id */
8bcb09a1 1300 if (bgp_evpn_path_es_use_nhg(bgp, info, &nhg_id)) {
6348981a 1301 mpinfo = NULL;
8bcb09a1
AK		 1302 api.nhgid = nhg_id;
1303 if (nhg_id)
1304 SET_FLAG(api.message, ZAPI_MESSAGE_NHG);
1305 } else {
6348981a 1306 mpinfo = info;
8bcb09a1 1307 }
6348981a
AK		 1308
1309 for (; mpinfo; mpinfo = bgp_path_info_mpath_next(mpinfo)) {
f7e1c681 1310 uint32_t nh_weight;
1311
a74e593b
RW		 1312 if (valid_nh_count >= multipath_num)
1313 break;
1314
b4cb15c6 1315 *mpinfo_cp = *mpinfo;
f7e1c681 1316 nh_weight = 0;
b4cb15c6 1317
d0d695f4
RW		 1318 /* Get nexthop address-family */
1319 if (p->family == AF_INET
1320 && !BGP_ATTR_NEXTHOP_AFI_IP6(mpinfo_cp->attr))
1321 nh_family = AF_INET;
1322 else if (p->family == AF_INET6
1323 || (p->family == AF_INET
1324 && BGP_ATTR_NEXTHOP_AFI_IP6(mpinfo_cp->attr)))
1325 nh_family = AF_INET6;
1326 else
1327 continue;
1328
f7e1c681 1329 /* If processing for weighted ECMP, determine the next hop's
1330 * weight. Based on user setting, we may skip the next hop
1331 * in some situations.
1332 */
1333 if (do_wt_ecmp) {
1334 if (!bgp_zebra_use_nhop_weighted(bgp, mpinfo->attr,
1335 cum_bw, &nh_weight))
1336 continue;
1337 }
1374aec9 1338 api_nh = &api.nexthops[valid_nh_count];
ef3e0d04
SM		 1339
1340 if (CHECK_FLAG(info->attr->flag,
1341 ATTR_FLAG_BIT(BGP_ATTR_SRTE_COLOR)))
1342 api_nh->srte_color = info->attr->srte_color;
1343
257b7b6e
DS		 1344 if (bgp_debug_zebra(&api.prefix)) {
1345 if (mpinfo->extra) {
70492dea
DS		 1346 zlog_debug("%s: p=%pFX, bgp_is_valid_label: %d",
1347 __func__, p,
257b7b6e
DS		 1348 bgp_is_valid_label(
1349 &mpinfo->extra->label[0]));
1350 } else {
70492dea
DS		 1351 zlog_debug(
1352 "%s: p=%pFX, extra is NULL, no label",
1353 __func__, p);
ddb5b488 1354 }
257b7b6e 1355 }
ddb5b488 1356
257b7b6e
DS		 1357 if (bgp->table_map[afi][safi].name) {
1358 /* Copy info and attributes, so the route-map
1359 apply doesn't modify the BGP route info. */
1360 local_attr = *mpinfo->attr;
1361 mpinfo_cp->attr = &local_attr;
1362 if (!bgp_table_map_apply(bgp->table_map[afi][safi].map,
1363 p, mpinfo_cp))
1364 continue;
b4cb15c6 1365
257b7b6e
DS		 1366 /* metric/tag is only allowed to be
1367 * overridden on 1st nexthop */
1368 if (mpinfo == info) {
1369 metric = mpinfo_cp->attr->med;
1370 tag = mpinfo_cp->attr->tag;
b4cb15c6 1371 }
257b7b6e 1372 }
d62a17ae 1373
257b7b6e 1374 if (nh_family == AF_INET) {
77e62f2b 1375 nh_updated = update_ipv4nh_for_route_install(
1376 nh_othervrf,
e1e71450 1377 nh_othervrf ?
1378 info->extra->bgp_orig : bgp,
77e62f2b 1379 &mpinfo_cp->attr->nexthop,
1380 mpinfo_cp->attr, is_evpn, api_nh);
2ad4f093 1381 } else {
f220da99 1382 ifindex_t ifindex = IFINDEX_INTERNAL;
2ad4f093 1383 struct in6_addr *nexthop;
9913029c 1384
18ee8310
DS		 1385 nexthop = bgp_path_info_to_ipv6_nexthop(mpinfo_cp,
1386 &ifindex);
00c10664
DA		 1387
1388 if (!nexthop)
1389 nh_updated = update_ipv4nh_for_route_install(
1390 nh_othervrf,
1391 nh_othervrf ? info->extra->bgp_orig
1392 : bgp,
1393 &mpinfo_cp->attr->nexthop,
1394 mpinfo_cp->attr, is_evpn, api_nh);
1395 else
1396 nh_updated = update_ipv6nh_for_route_install(
1397 nh_othervrf,
1398 nh_othervrf ? info->extra->bgp_orig
1399 : bgp,
1400 nexthop, ifindex, mpinfo, info, is_evpn,
1401 api_nh);
2ad4f093 1402 }
d62a17ae 1403
77e62f2b 1404 /* Did we get proper nexthop info to update zebra? */
1405 if (!nh_updated)
1406 continue;
1407
1a9cb083
JM		 1408 /* Allow recursion if it is a multipath group with both
1409 * eBGP and iBGP paths.
1410 */
1411 if (!allow_recursion
1412 && CHECK_FLAG(bgp->flags, BGP_FLAG_PEERTYPE_MULTIPATH_RELAX)
1413 && (mpinfo->peer->sort == BGP_PEER_IBGP
1414 || mpinfo->peer->sort == BGP_PEER_CONFED))
1415 allow_recursion = true;
1416
a4d82a8a
PZ		 1417 if (mpinfo->extra
1418 && bgp_is_valid_label(&mpinfo->extra->label[0])
90264d64 1419 && !CHECK_FLAG(api.flags, ZEBRA_FLAG_EVPN_ROUTE)) {
2ad4f093 1420 has_valid_label = 1;
b57ba6d2 1421 label = label_pton(&mpinfo->extra->label[0]);
9913029c 1422
68a02e06
MS		 1423 SET_FLAG(api_nh->flags, ZAPI_NEXTHOP_FLAG_LABEL);
1424
2ad4f093
RW		 1425 api_nh->label_num = 1;
1426 api_nh->labels[0] = label;
d62a17ae 1427 }
a2299aba
AD		 1428
1429 if (is_evpn
1430 && mpinfo->attr->evpn_overlay.type
1431 != OVERLAY_INDEX_GATEWAY_IP)
1432 memcpy(&api_nh->rmac, &(mpinfo->attr->rmac),
1433 sizeof(struct ethaddr));
1434
f7e1c681 1435 api_nh->weight = nh_weight;
4e30bc2b 1436
53a4de82
HS		 1437 if (mpinfo->extra
1438 && !sid_zero(&mpinfo->extra->sid[0])
1439 && !CHECK_FLAG(api.flags, ZEBRA_FLAG_EVPN_ROUTE)) {
1440 has_valid_sid = 1;
1441 memcpy(&api_nh->seg6_segs, &mpinfo->extra->sid[0],
1442 sizeof(api_nh->seg6_segs));
1443 }
1444
2ad4f093
RW		 1445 valid_nh_count++;
1446 }
d62a17ae 1447
53a4de82 1448 if (has_valid_sid && !(CHECK_FLAG(api.flags, ZEBRA_FLAG_EVPN_ROUTE)))
c60c1ade 1449 SET_FLAG(api_nh->flags, ZAPI_NEXTHOP_FLAG_SEG6);
53a4de82 1450
6348981a
AK		 1451 is_add = (valid_nh_count || nhg_id) ? true : false;
1452
ec0acb80 1453 if (is_add && CHECK_FLAG(bm->flags, BM_FLAG_SEND_EXTRA_DATA_TO_ZEBRA)) {
94effaf0
DA		 1454 struct bgp_zebra_opaque bzo = {};
1455
1456 strlcpy(bzo.aspath, info->attr->aspath->str,
1457 sizeof(bzo.aspath));
1458
1459 if (info->attr->flag & ATTR_FLAG_BIT(BGP_ATTR_COMMUNITIES))
1460 strlcpy(bzo.community, info->attr->community->str,
1461 sizeof(bzo.community));
1462
1463 if (info->attr->flag
1464 & ATTR_FLAG_BIT(BGP_ATTR_LARGE_COMMUNITIES))
1465 strlcpy(bzo.lcommunity, info->attr->lcommunity->str,
1466 sizeof(bzo.lcommunity));
e46723a5
DS		 1467
1468 SET_FLAG(api.message, ZAPI_MESSAGE_OPAQUE);
94effaf0
DA		 1469 api.opaque.length = MIN(sizeof(struct bgp_zebra_opaque),
1470 ZAPI_MESSAGE_OPAQUE_LENGTH);
1471 memcpy(api.opaque.data, &bzo, api.opaque.length);
e46723a5
DS		 1472 }
1473
1a9cb083
JM		 1474 if (allow_recursion)
1475 SET_FLAG(api.flags, ZEBRA_FLAG_ALLOW_RECURSION);
1476
5cc347c4
DS		 1477 /*
1478 * When we create an aggregate route we must also
1479 * install a Null0 route in the RIB, so overwrite
1480 * what was written into api with a blackhole route
1481 */
1482 if (info->sub_type == BGP_ROUTE_AGGREGATE)
1483 zapi_route_set_blackhole(&api, BLACKHOLE_NULL);
1484 else
2ad4f093 1485 api.nexthop_num = valid_nh_count;
d62a17ae 1486
2ad4f093
RW		 1487 SET_FLAG(api.message, ZAPI_MESSAGE_METRIC);
1488 api.metric = metric;
d62a17ae 1489
2ad4f093
RW		 1490 if (tag) {
1491 SET_FLAG(api.message, ZAPI_MESSAGE_TAG);
1492 api.tag = tag;
1493 }
d62a17ae 1494
2ad4f093
RW		 1495 distance = bgp_distance_apply(p, info, afi, safi, bgp);
1496 if (distance) {
1497 SET_FLAG(api.message, ZAPI_MESSAGE_DISTANCE);
1498 api.distance = distance;
1499 }
d62a17ae 1500
2ad4f093 1501 if (bgp_debug_zebra(p)) {
2ad4f093 1502 char nh_buf[INET6_ADDRSTRLEN];
d8744f72
CS		 1503 char eth_buf[ETHER_ADDR_STRLEN + 7] = {'\0'};
1504 char buf1[ETHER_ADDR_STRLEN];
2ad4f093 1505 char label_buf[20];
53a4de82
HS		 1506 char sid_buf[20];
1507 char segs_buf[256];
2ad4f093
RW		 1508 int i;
1509
2dbe669b
DA		 1510 zlog_debug(
1511 "Tx route %s VRF %u %pFX metric %u tag %" ROUTE_TAG_PRI
6348981a 1512 " count %d nhg %d",
2dbe669b 1513 valid_nh_count ? "add" : "delete", bgp->vrf_id,
6348981a
AK		 1514 &api.prefix, api.metric, api.tag, api.nexthop_num,
1515 nhg_id);
2ad4f093
RW		 1516 for (i = 0; i < api.nexthop_num; i++) {
1517 api_nh = &api.nexthops[i];
1518
1ee069db
CS		 1519 switch (api_nh->type) {
1520 case NEXTHOP_TYPE_IFINDEX:
77e62f2b 1521 nh_buf[0] = '\0';
1ee069db
CS		 1522 break;
1523 case NEXTHOP_TYPE_IPV4:
1524 case NEXTHOP_TYPE_IPV4_IFINDEX:
1525 nh_family = AF_INET;
77e62f2b 1526 inet_ntop(nh_family, &api_nh->gate, nh_buf,
1527 sizeof(nh_buf));
1ee069db
CS		 1528 break;
1529 case NEXTHOP_TYPE_IPV6:
1530 case NEXTHOP_TYPE_IPV6_IFINDEX:
1531 nh_family = AF_INET6;
1532 inet_ntop(nh_family, &api_nh->gate, nh_buf,
1533 sizeof(nh_buf));
1534 break;
1535 case NEXTHOP_TYPE_BLACKHOLE:
1536 strlcpy(nh_buf, "blackhole", sizeof(nh_buf));
1537 break;
1538 default:
1539 /* Note: add new nexthop case */
1540 assert(0);
1541 break;
77e62f2b 1542 }
2ad4f093
RW		 1543
1544 label_buf[0] = '\0';
d8744f72 1545 eth_buf[0] = '\0';
a4d82a8a
PZ		 1546 if (has_valid_label
1547 && !CHECK_FLAG(api.flags, ZEBRA_FLAG_EVPN_ROUTE))
a7799788
CS		 1548 snprintf(label_buf, sizeof(label_buf),
1549 "label %u", api_nh->labels[0]);
53a4de82
HS		 1550 if (has_valid_sid
1551 && !CHECK_FLAG(api.flags, ZEBRA_FLAG_EVPN_ROUTE)) {
1552 inet_ntop(AF_INET6, &api_nh->seg6_segs,
1553 sid_buf, sizeof(sid_buf));
1554 snprintf(segs_buf, sizeof(segs_buf), "segs %s",
1555 sid_buf);
1556 }
d8744f72
CS		 1557 if (CHECK_FLAG(api.flags, ZEBRA_FLAG_EVPN_ROUTE)
1558 && !is_zero_mac(&api_nh->rmac))
a7799788
CS		 1559 snprintf(eth_buf, sizeof(eth_buf), " RMAC %s",
1560 prefix_mac2str(&api_nh->rmac,
1561 buf1, sizeof(buf1)));
53a4de82 1562 zlog_debug(" nhop [%d]: %s if %u VRF %u wt %u %s %s %s",
77e62f2b 1563 i + 1, nh_buf, api_nh->ifindex,
4e30bc2b 1564 api_nh->vrf_id, api_nh->weight,
53a4de82 1565 label_buf, segs_buf, eth_buf);
d62a17ae 1566 }
2ad4f093 1567
960035b2
PZ		 1568 int recursion_flag = 0;
1569
1570 if (CHECK_FLAG(api.flags, ZEBRA_FLAG_ALLOW_RECURSION))
1571 recursion_flag = 1;
1572
70492dea
DS		 1573 zlog_debug("%s: %pFX: announcing to zebra (recursion %sset)",
1574 __func__, p, (recursion_flag ? "" : "NOT "));
960035b2 1575 }
6348981a 1576 zclient_route_send(is_add ? ZEBRA_ROUTE_ADD : ZEBRA_ROUTE_DELETE,
2ad4f093 1577 zclient, &api);
718e3744 1578}
1579
73ac8160 1580/* Announce all routes of a table to zebra */
d62a17ae 1581void bgp_zebra_announce_table(struct bgp *bgp, afi_t afi, safi_t safi)
73ac8160 1582{
9bcb3eef 1583 struct bgp_dest *dest;
d62a17ae 1584 struct bgp_table *table;
40381db7 1585 struct bgp_path_info *pi;
d62a17ae 1586
1587 /* Don't try to install if we're not connected to Zebra or Zebra doesn't
1588 * know of this instance.
1589 */
1590 if (!bgp_install_info_to_zebra(bgp))
1591 return;
1592
1593 table = bgp->rib[afi][safi];
1594 if (!table)
1595 return;
1596
9bcb3eef
DS		 1597 for (dest = bgp_table_top(table); dest; dest = bgp_route_next(dest))
1598 for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next)
40381db7 1599 if (CHECK_FLAG(pi->flags, BGP_PATH_SELECTED) &&
ddb5b488 1600
40381db7
DS		 1601 (pi->type == ZEBRA_ROUTE_BGP
1602 && (pi->sub_type == BGP_ROUTE_NORMAL
1603 || pi->sub_type == BGP_ROUTE_IMPORTED)))
ddb5b488 1604
9bcb3eef
DS		 1605 bgp_zebra_announce(dest,
1606 bgp_dest_get_prefix(dest),
b54892e0 1607 pi, bgp, afi, safi);
73ac8160
DS		 1608}
1609
c163f297
DS		 1610/* Announce routes of any bgp subtype of a table to zebra */
1611void bgp_zebra_announce_table_all_subtypes(struct bgp *bgp, afi_t afi,
1612 safi_t safi)
1613{
1614 struct bgp_dest *dest;
1615 struct bgp_table *table;
1616 struct bgp_path_info *pi;
1617
1618 if (!bgp_install_info_to_zebra(bgp))
1619 return;
1620
1621 table = bgp->rib[afi][safi];
1622 if (!table)
1623 return;
1624
1625 for (dest = bgp_table_top(table); dest; dest = bgp_route_next(dest))
1626 for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next)
1627 if (CHECK_FLAG(pi->flags, BGP_PATH_SELECTED) &&
1628 pi->type == ZEBRA_ROUTE_BGP)
1629 bgp_zebra_announce(dest,
1630 bgp_dest_get_prefix(dest),
1631 pi, bgp, afi, safi);
1632}
1633
5a1ae2c2 1634void bgp_zebra_withdraw(const struct prefix *p, struct bgp_path_info *info,
568e10ca 1635 struct bgp *bgp, safi_t safi)
718e3744 1636{
2ad4f093 1637 struct zapi_route api;
f7df1907 1638 struct peer *peer;
ddb5b488 1639
d62a17ae 1640 /* Don't try to install if we're not connected to Zebra or Zebra doesn't
1641 * know of this instance.
1642 */
568e10ca 1643 if (!bgp_install_info_to_zebra(bgp))
d62a17ae 1644 return;
1645
f7df1907
PG		 1646 if (safi == SAFI_FLOWSPEC) {
1647 peer = info->peer;
d90b788e
A		 1648 bgp_pbr_update_entry(peer->bgp, p, info, AFI_IP, safi, false);
1649 return;
f7df1907 1650 }
529efa23 1651
2ad4f093 1652 memset(&api, 0, sizeof(api));
568e10ca 1653 api.vrf_id = bgp->vrf_id;
2ad4f093
RW		 1654 api.type = ZEBRA_ROUTE_BGP;
1655 api.safi = safi;
1656 api.prefix = *p;
d62a17ae 1657
1276ce38
PG		 1658 if (info->attr->rmap_table_id) {
1659 SET_FLAG(api.message, ZAPI_MESSAGE_TABLEID);
1660 api.tableid = info->attr->rmap_table_id;
1661 }
1662
88493076 1663 /* If the route's source is EVPN, flag as such. */
1664 if (is_route_parent_evpn(info))
90264d64 1665 SET_FLAG(api.flags, ZEBRA_FLAG_EVPN_ROUTE);
01740ff4 1666
2dbe669b
DA		 1667 if (bgp_debug_zebra(p))
1668 zlog_debug("Tx route delete VRF %u %pFX", bgp->vrf_id,
1669 &api.prefix);
d62a17ae 1670
2ad4f093 1671 zclient_route_send(ZEBRA_ROUTE_DELETE, zclient, &api);
718e3744 1672}
56c1f7d8 1673
c163f297
DS		 1674/* Withdraw all entries in a BGP instances RIB table from Zebra */
1675void bgp_zebra_withdraw_table_all_subtypes(struct bgp *bgp, afi_t afi, safi_t safi)
1676{
1677 struct bgp_dest *dest;
1678 struct bgp_table *table;
1679 struct bgp_path_info *pi;
1680
1681 if (!bgp_install_info_to_zebra(bgp))
1682 return;
1683
1684 table = bgp->rib[afi][safi];
1685 if (!table)
1686 return;
1687
1688 for (dest = bgp_table_top(table); dest; dest = bgp_route_next(dest)) {
1689 for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) {
1690 if (CHECK_FLAG(pi->flags, BGP_PATH_SELECTED)
1691 && (pi->type == ZEBRA_ROUTE_BGP))
1692 bgp_zebra_withdraw(bgp_dest_get_prefix(dest),
1693 pi, bgp, safi);
1694 }
1695 }
1696}
1697
d7c0a89a
QY		 1698struct bgp_redist *bgp_redist_lookup(struct bgp *bgp, afi_t afi, uint8_t type,
1699 unsigned short instance)
7c8ff89e 1700{
d62a17ae 1701 struct list *red_list;
1702 struct listnode *node;
1703 struct bgp_redist *red;
7c8ff89e 1704
d62a17ae 1705 red_list = bgp->redist[afi][type];
1706 if (!red_list)
1707 return (NULL);
7c8ff89e 1708
d62a17ae 1709 for (ALL_LIST_ELEMENTS_RO(red_list, node, red))
1710 if (red->instance == instance)
1711 return red;
7c8ff89e 1712
d62a17ae 1713 return NULL;
7c8ff89e
DS		 1714}
1715
d7c0a89a
QY		 1716struct bgp_redist *bgp_redist_add(struct bgp *bgp, afi_t afi, uint8_t type,
1717 unsigned short instance)
7c8ff89e 1718{
d62a17ae 1719 struct list *red_list;
1720 struct bgp_redist *red;
7c8ff89e 1721
d62a17ae 1722 red = bgp_redist_lookup(bgp, afi, type, instance);
1723 if (red)
1724 return red;
7c8ff89e 1725
d62a17ae 1726 if (!bgp->redist[afi][type])
1727 bgp->redist[afi][type] = list_new();
7c8ff89e 1728
d62a17ae 1729 red_list = bgp->redist[afi][type];
9f5dc319 1730 red = XCALLOC(MTYPE_BGP_REDIST, sizeof(struct bgp_redist));
d62a17ae 1731 red->instance = instance;
7c8ff89e 1732
d62a17ae 1733 listnode_add(red_list, red);
7c8ff89e 1734
d62a17ae 1735 return red;
7c8ff89e
DS		 1736}
1737
d7c0a89a
QY		 1738static void bgp_redist_del(struct bgp *bgp, afi_t afi, uint8_t type,
1739 unsigned short instance)
7c8ff89e 1740{
d62a17ae 1741 struct bgp_redist *red;
1742
1743 red = bgp_redist_lookup(bgp, afi, type, instance);
1744
1745 if (red) {
1746 listnode_delete(bgp->redist[afi][type], red);
1747 XFREE(MTYPE_BGP_REDIST, red);
acdf5e25 1748 if (!bgp->redist[afi][type]->count)
6a154c88 1749 list_delete(&bgp->redist[afi][type]);
d62a17ae 1750 }
7c8ff89e 1751}
6b0655a2 1752
718e3744 1753/* Other routes redistribution into BGP. */
d7c0a89a 1754int bgp_redistribute_set(struct bgp *bgp, afi_t afi, int type,
e923dd62 1755 unsigned short instance, bool changed)
718e3744 1756{
e923dd62 1757 /* If redistribute options are changed call
1758 * bgp_redistribute_unreg() to reset the option and withdraw
1759 * the routes
1760 */
1761 if (changed)
1762 bgp_redistribute_unreg(bgp, afi, type, instance);
718e3744 1763
d62a17ae 1764 /* Return if already redistribute flag is set. */
1765 if (instance) {
1766 if (redist_check_instance(&zclient->mi_redist[afi][type],
1767 instance))
1768 return CMD_WARNING;
718e3744 1769
d62a17ae 1770 redist_add_instance(&zclient->mi_redist[afi][type], instance);
1771 } else {
d9083050
IR		 1772 if (vrf_bitmap_check(zclient->redist[afi][type], bgp->vrf_id))
1773 return CMD_WARNING;
1774
49e5a4a0 1775#ifdef ENABLE_BGP_VNC
f920dd6d 1776 if (EVPN_ENABLED(bgp) && type == ZEBRA_ROUTE_VNC_DIRECT) {
d62a17ae 1777 vnc_export_bgp_enable(
1778 bgp, afi); /* only enables if mode bits cfg'd */
1779 }
65efcfce
LB		 1780#endif
1781
d62a17ae 1782 vrf_bitmap_set(zclient->redist[afi][type], bgp->vrf_id);
1783 }
718e3744 1784
ea12cf11
DS		 1785 /*
1786 * Don't try to register if we're not connected to Zebra or Zebra
1787 * doesn't know of this instance.
1788 *
1789 * When we come up later well resend if needed.
d62a17ae 1790 */
1791 if (!bgp_install_info_to_zebra(bgp))
ea12cf11 1792 return CMD_SUCCESS;
a39275d7 1793
d62a17ae 1794 if (BGP_DEBUG(zebra, ZEBRA))
1795 zlog_debug("Tx redistribute add VRF %u afi %d %s %d",
1796 bgp->vrf_id, afi, zebra_route_string(type),
1797 instance);
518f0eb1 1798
d62a17ae 1799 /* Send distribute add message to zebra. */
1800 zebra_redistribute_send(ZEBRA_REDISTRIBUTE_ADD, zclient, afi, type,
1801 instance, bgp->vrf_id);
718e3744 1802
d62a17ae 1803 return CMD_SUCCESS;
718e3744 1804}
1805
d62a17ae 1806int bgp_redistribute_resend(struct bgp *bgp, afi_t afi, int type,
d7c0a89a 1807 unsigned short instance)
518f0eb1 1808{
d62a17ae 1809 /* Don't try to send if we're not connected to Zebra or Zebra doesn't
1810 * know of this instance.
1811 */
1812 if (!bgp_install_info_to_zebra(bgp))
1813 return -1;
1814
1815 if (BGP_DEBUG(zebra, ZEBRA))
1816 zlog_debug("Tx redistribute del/add VRF %u afi %d %s %d",
1817 bgp->vrf_id, afi, zebra_route_string(type),
1818 instance);
1819
1820 /* Send distribute add message to zebra. */
1821 zebra_redistribute_send(ZEBRA_REDISTRIBUTE_DELETE, zclient, afi, type,
1822 instance, bgp->vrf_id);
1823 zebra_redistribute_send(ZEBRA_REDISTRIBUTE_ADD, zclient, afi, type,
1824 instance, bgp->vrf_id);
1825
1826 return 0;
518f0eb1
DS		 1827}
1828
718e3744 1829/* Redistribute with route-map specification. */
3dc339cd
DA		 1830bool bgp_redistribute_rmap_set(struct bgp_redist *red, const char *name,
1831 struct route_map *route_map)
718e3744 1832{
d62a17ae 1833 if (red->rmap.name && (strcmp(red->rmap.name, name) == 0))
3dc339cd 1834 return false;
718e3744 1835
0a22ddfb 1836 XFREE(MTYPE_ROUTE_MAP_NAME, red->rmap.name);
b4897fa5 1837 /* Decrement the count for existing routemap and
1838 * increment the count for new route map.
1839 */
1840 route_map_counter_decrement(red->rmap.map);
d62a17ae 1841 red->rmap.name = XSTRDUP(MTYPE_ROUTE_MAP_NAME, name);
1de27621 1842 red->rmap.map = route_map;
b4897fa5 1843 route_map_counter_increment(red->rmap.map);
718e3744 1844
3dc339cd 1845 return true;
718e3744 1846}
1847
1848/* Redistribute with metric specification. */
3dc339cd
DA		 1849bool bgp_redistribute_metric_set(struct bgp *bgp, struct bgp_redist *red,
1850 afi_t afi, int type, uint32_t metric)
718e3744 1851{
9bcb3eef 1852 struct bgp_dest *dest;
40381db7 1853 struct bgp_path_info *pi;
d62a17ae 1854
1855 if (red->redist_metric_flag && red->redist_metric == metric)
3dc339cd 1856 return false;
d62a17ae 1857
1858 red->redist_metric_flag = 1;
1859 red->redist_metric = metric;
1860
9bcb3eef
DS		 1861 for (dest = bgp_table_top(bgp->rib[afi][SAFI_UNICAST]); dest;
1862 dest = bgp_route_next(dest)) {
1863 for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) {
40381db7
DS		 1864 if (pi->sub_type == BGP_ROUTE_REDISTRIBUTE
1865 && pi->type == type
1866 && pi->instance == red->instance) {
d62a17ae 1867 struct attr *old_attr;
1868 struct attr new_attr;
1869
6f4f49b2 1870 new_attr = *pi->attr;
d62a17ae 1871 new_attr.med = red->redist_metric;
40381db7
DS		 1872 old_attr = pi->attr;
1873 pi->attr = bgp_attr_intern(&new_attr);
d62a17ae 1874 bgp_attr_unintern(&old_attr);
1875
9bcb3eef 1876 bgp_path_info_set_flag(dest, pi,
18ee8310 1877 BGP_PATH_ATTR_CHANGED);
9bcb3eef 1878 bgp_process(bgp, dest, afi, SAFI_UNICAST);
d62a17ae 1879 }
1880 }
1881 }
1882
3dc339cd 1883 return true;
718e3744 1884}
1885
1886/* Unset redistribution. */
d62a17ae 1887int bgp_redistribute_unreg(struct bgp *bgp, afi_t afi, int type,
d7c0a89a 1888 unsigned short instance)
718e3744 1889{
d62a17ae 1890 struct bgp_redist *red;
1891
1892 red = bgp_redist_lookup(bgp, afi, type, instance);
1893 if (!red)
1894 return CMD_SUCCESS;
1895
1896 /* Return if zebra connection is disabled. */
1897 if (instance) {
1898 if (!redist_check_instance(&zclient->mi_redist[afi][type],
1899 instance))
1900 return CMD_WARNING;
1901 redist_del_instance(&zclient->mi_redist[afi][type], instance);
1902 } else {
1903 if (!vrf_bitmap_check(zclient->redist[afi][type], bgp->vrf_id))
1904 return CMD_WARNING;
1905 vrf_bitmap_unset(zclient->redist[afi][type], bgp->vrf_id);
1906 }
718e3744 1907
d62a17ae 1908 if (bgp_install_info_to_zebra(bgp)) {
1909 /* Send distribute delete message to zebra. */
1910 if (BGP_DEBUG(zebra, ZEBRA))
1911 zlog_debug("Tx redistribute del VRF %u afi %d %s %d",
1912 bgp->vrf_id, afi, zebra_route_string(type),
1913 instance);
1914 zebra_redistribute_send(ZEBRA_REDISTRIBUTE_DELETE, zclient, afi,
1915 type, instance, bgp->vrf_id);
1916 }
1917
1918 /* Withdraw redistributed routes from current BGP's routing table. */
1919 bgp_redistribute_withdraw(bgp, afi, type, instance);
1920
1921 return CMD_SUCCESS;
718e3744 1922}
1923
6aeb9e78 1924/* Unset redistribution. */
d62a17ae 1925int bgp_redistribute_unset(struct bgp *bgp, afi_t afi, int type,
d7c0a89a 1926 unsigned short instance)
6aeb9e78 1927{
d62a17ae 1928 struct bgp_redist *red;
6aeb9e78 1929
ddb5b488
PZ		 1930/*
1931 * vnc and vpn->vrf checks must be before red check because
1932 * they operate within bgpd irrespective of zebra connection
1933 * status. red lookup fails if there is no zebra connection.
1934 */
49e5a4a0 1935#ifdef ENABLE_BGP_VNC
f920dd6d 1936 if (EVPN_ENABLED(bgp) && type == ZEBRA_ROUTE_VNC_DIRECT) {
ddb5b488
PZ		 1937 vnc_export_bgp_disable(bgp, afi);
1938 }
1939#endif
ddb5b488 1940
d62a17ae 1941 red = bgp_redist_lookup(bgp, afi, type, instance);
1942 if (!red)
1943 return CMD_SUCCESS;
6aeb9e78 1944
d62a17ae 1945 bgp_redistribute_unreg(bgp, afi, type, instance);
6aeb9e78 1946
d62a17ae 1947 /* Unset route-map. */
0a22ddfb 1948 XFREE(MTYPE_ROUTE_MAP_NAME, red->rmap.name);
b4897fa5 1949 route_map_counter_decrement(red->rmap.map);
d62a17ae 1950 red->rmap.map = NULL;
6aeb9e78 1951
d62a17ae 1952 /* Unset metric. */
1953 red->redist_metric_flag = 0;
1954 red->redist_metric = 0;
6aeb9e78 1955
d62a17ae 1956 bgp_redist_del(bgp, afi, type, instance);
6aeb9e78 1957
d62a17ae 1958 return CMD_SUCCESS;
6aeb9e78
DS		 1959}
1960
fc2408ec
DS		 1961void bgp_redistribute_redo(struct bgp *bgp)
1962{
1963 afi_t afi;
1964 int i;
1965 struct list *red_list;
1966 struct listnode *node;
1967 struct bgp_redist *red;
1968
1969 for (afi = AFI_IP; afi < AFI_MAX; afi++) {
1970 for (i = 0; i < ZEBRA_ROUTE_MAX; i++) {
1971
1972 red_list = bgp->redist[afi][i];
1973 if (!red_list)
1974 continue;
1975
1976 for (ALL_LIST_ELEMENTS_RO(red_list, node, red)) {
1977 bgp_redistribute_resend(bgp, afi, i,
1978 red->instance);
1979 }
1980 }
1981 }
1982}
1983
d62a17ae 1984void bgp_zclient_reset(void)
718e3744 1985{
d62a17ae 1986 zclient_reset(zclient);
718e3744 1987}
1988
ad4cbda1 1989/* Register this instance with Zebra. Invoked upon connect (for
1990 * default instance) and when other VRFs are learnt (or created and
1991 * already learnt).
1992 */
d62a17ae 1993void bgp_zebra_instance_register(struct bgp *bgp)
ad4cbda1 1994{
d62a17ae 1995 /* Don't try to register if we're not connected to Zebra */
1996 if (!zclient || zclient->sock < 0)
1997 return;
ad4cbda1 1998
d62a17ae 1999 if (BGP_DEBUG(zebra, ZEBRA))
2000 zlog_debug("Registering VRF %u", bgp->vrf_id);
ad4cbda1 2001
d62a17ae 2002 /* Register for router-id, interfaces, redistributed routes. */
2003 zclient_send_reg_requests(zclient, bgp->vrf_id);
7724c0a1 2004
e2f3a930
T		 2005 /* For EVPN instance, register to learn about VNIs, if appropriate. */
2006 if (bgp->advertise_all_vni)
d62a17ae 2007 bgp_zebra_advertise_all_vni(bgp, 1);
1ee0a2df
DS		 2008
2009 bgp_nht_register_nexthops(bgp);
ad4cbda1 2010}
2011
2012/* Deregister this instance with Zebra. Invoked upon the instance
2013 * being deleted (default or VRF) and it is already registered.
2014 */
d62a17ae 2015void bgp_zebra_instance_deregister(struct bgp *bgp)
ad4cbda1 2016{
d62a17ae 2017 /* Don't try to deregister if we're not connected to Zebra */
2018 if (zclient->sock < 0)
2019 return;
ad4cbda1 2020
d62a17ae 2021 if (BGP_DEBUG(zebra, ZEBRA))
2022 zlog_debug("Deregistering VRF %u", bgp->vrf_id);
ad4cbda1 2023
e2f3a930
T		 2024 /* For EVPN instance, unregister learning about VNIs, if appropriate. */
2025 if (bgp->advertise_all_vni)
d62a17ae 2026 bgp_zebra_advertise_all_vni(bgp, 0);
7724c0a1 2027
d62a17ae 2028 /* Deregister for router-id, interfaces, redistributed routes. */
2029 zclient_send_dereg_requests(zclient, bgp->vrf_id);
ad4cbda1 2030}
2031
d62a17ae 2032void bgp_zebra_initiate_radv(struct bgp *bgp, struct peer *peer)
4a04e5f7 2033{
bbad0276 2034 uint32_t ra_interval = BGP_UNNUM_DEFAULT_RA_INTERVAL;
5c81b96a 2035
d62a17ae 2036 /* Don't try to initiate if we're not connected to Zebra */
2037 if (zclient->sock < 0)
2038 return;
4a04e5f7 2039
d62a17ae 2040 if (BGP_DEBUG(zebra, ZEBRA))
2041 zlog_debug("%u: Initiating RA for peer %s", bgp->vrf_id,
2042 peer->host);
4a04e5f7 2043
b3a3290e
DS		 2044 /*
2045 * If unnumbered peer (peer->ifp) call thru zapi to start RAs.
2046 * If we don't have an ifp pointer, call function to find the
2047 * ifps for a numbered enhe peer to turn RAs on.
2048 */
2049 peer->ifp ? zclient_send_interface_radv_req(zclient, bgp->vrf_id,
2050 peer->ifp, 1, ra_interval)
2051 : bgp_nht_reg_enhe_cap_intfs(peer);
4a04e5f7 2052}
2053
d62a17ae 2054void bgp_zebra_terminate_radv(struct bgp *bgp, struct peer *peer)
4a04e5f7 2055{
d62a17ae 2056 /* Don't try to terminate if we're not connected to Zebra */
2057 if (zclient->sock < 0)
2058 return;
4a04e5f7 2059
d62a17ae 2060 if (BGP_DEBUG(zebra, ZEBRA))
2061 zlog_debug("%u: Terminating RA for peer %s", bgp->vrf_id,
2062 peer->host);
4a04e5f7 2063
b3a3290e
DS		 2064 /*
2065 * If unnumbered peer (peer->ifp) call thru zapi to stop RAs.
2066 * If we don't have an ifp pointer, call function to find the
2067 * ifps for a numbered enhe peer to turn RAs off.
2068 */
2069 peer->ifp ? zclient_send_interface_radv_req(zclient, bgp->vrf_id,
2070 peer->ifp, 0, 0)
2071 : bgp_nht_dereg_enhe_cap_intfs(peer);
4a04e5f7 2072}
2073
31310b25
MK		 2074int bgp_zebra_advertise_subnet(struct bgp *bgp, int advertise, vni_t vni)
2075{
2076 struct stream *s = NULL;
2077
2078 /* Check socket. */
2079 if (!zclient || zclient->sock < 0)
2080 return 0;
2081
2082 /* Don't try to register if Zebra doesn't know of this instance. */
bb4ef1ae
DS		 2083 if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp)) {
2084 if (BGP_DEBUG(zebra, ZEBRA))
15569c58
DA		 2085 zlog_debug(
2086 "%s: No zebra instance to talk to, cannot advertise subnet",
2087 __func__);
31310b25 2088 return 0;
bb4ef1ae 2089 }
31310b25
MK		 2090
2091 s = zclient->obuf;
2092 stream_reset(s);
2093
2094 zclient_create_header(s, ZEBRA_ADVERTISE_SUBNET, bgp->vrf_id);
2095 stream_putc(s, advertise);
2096 stream_put3(s, vni);
2097 stream_putw_at(s, 0, stream_get_endp(s));
2098
2099 return zclient_send_message(zclient);
2100}
2101
a8016157
CS		 2102int bgp_zebra_advertise_svi_macip(struct bgp *bgp, int advertise, vni_t vni)
2103{
2104 struct stream *s = NULL;
2105
2106 /* Check socket. */
2107 if (!zclient || zclient->sock < 0)
2108 return 0;
2109
2110 /* Don't try to register if Zebra doesn't know of this instance. */
2111 if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp))
2112 return 0;
2113
2114 s = zclient->obuf;
2115 stream_reset(s);
2116
2117 zclient_create_header(s, ZEBRA_ADVERTISE_SVI_MACIP, bgp->vrf_id);
2118 stream_putc(s, advertise);
2119 stream_putl(s, vni);
2120 stream_putw_at(s, 0, stream_get_endp(s));
2121
2122 return zclient_send_message(zclient);
2123}
2124
1a98c087
MK		 2125int bgp_zebra_advertise_gw_macip(struct bgp *bgp, int advertise, vni_t vni)
2126{
2127 struct stream *s = NULL;
2128
2129 /* Check socket. */
2130 if (!zclient || zclient->sock < 0)
2131 return 0;
2132
2133 /* Don't try to register if Zebra doesn't know of this instance. */
bb4ef1ae
DS		 2134 if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp)) {
2135 if (BGP_DEBUG(zebra, ZEBRA))
15569c58
DA		 2136 zlog_debug(
2137 "%s: No zebra instance to talk to, not installing gw_macip",
2138 __func__);
1a98c087 2139 return 0;
bb4ef1ae 2140 }
1a98c087
MK		 2141
2142 s = zclient->obuf;
2143 stream_reset(s);
2144
2145 zclient_create_header(s, ZEBRA_ADVERTISE_DEFAULT_GW, bgp->vrf_id);
2146 stream_putc(s, advertise);
cc6d5476 2147 stream_putl(s, vni);
1a98c087
MK		 2148 stream_putw_at(s, 0, stream_get_endp(s));
2149
2150 return zclient_send_message(zclient);
2151}
2152
fd069644
DS		 2153int bgp_zebra_vxlan_flood_control(struct bgp *bgp,
2154 enum vxlan_flood_control flood_ctrl)
2155{
2156 struct stream *s;
2157
2158 /* Check socket. */
2159 if (!zclient || zclient->sock < 0)
2160 return 0;
2161
2162 /* Don't try to register if Zebra doesn't know of this instance. */
bb4ef1ae
DS		 2163 if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp)) {
2164 if (BGP_DEBUG(zebra, ZEBRA))
15569c58
DA		 2165 zlog_debug(
2166 "%s: No zebra instance to talk to, not installing all vni",
2167 __func__);
fd069644 2168 return 0;
bb4ef1ae 2169 }
fd069644
DS		 2170
2171 s = zclient->obuf;
2172 stream_reset(s);
2173
2174 zclient_create_header(s, ZEBRA_VXLAN_FLOOD_CONTROL, bgp->vrf_id);
2175 stream_putc(s, flood_ctrl);
2176 stream_putw_at(s, 0, stream_get_endp(s));
2177
2178 return zclient_send_message(zclient);
2179}
2180
d62a17ae 2181int bgp_zebra_advertise_all_vni(struct bgp *bgp, int advertise)
7724c0a1 2182{
d62a17ae 2183 struct stream *s;
7724c0a1 2184
d62a17ae 2185 /* Check socket. */
2186 if (!zclient || zclient->sock < 0)
2187 return 0;
7724c0a1 2188
d62a17ae 2189 /* Don't try to register if Zebra doesn't know of this instance. */
2190 if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp))
2191 return 0;
7724c0a1 2192
d62a17ae 2193 s = zclient->obuf;
2194 stream_reset(s);
7724c0a1 2195
d62a17ae 2196 zclient_create_header(s, ZEBRA_ADVERTISE_ALL_VNI, bgp->vrf_id);
2197 stream_putc(s, advertise);
fbac9605
DS		 2198 /* Also inform current BUM handling setting. This is really
2199 * relevant only when 'advertise' is set.
2200 */
fd069644 2201 stream_putc(s, bgp->vxlan_flood_ctrl);
d62a17ae 2202 stream_putw_at(s, 0, stream_get_endp(s));
7724c0a1 2203
d62a17ae 2204 return zclient_send_message(zclient);
7724c0a1 2205}
2206
0b9d9cd0
CS		 2207int bgp_zebra_dup_addr_detection(struct bgp *bgp)
2208{
2209 struct stream *s;
2210
2211 /* Check socket. */
2212 if (!zclient || zclient->sock < 0)
2213 return 0;
2214
2215 /* Don't try to register if Zebra doesn't know of this instance. */
2216 if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp))
2217 return 0;
2218
2219 if (BGP_DEBUG(zebra, ZEBRA))
2220 zlog_debug("dup addr detect %s max_moves %u time %u freeze %s freeze_time %u",
2221 bgp->evpn_info->dup_addr_detect ?
2222 "enable" : "disable",
2223 bgp->evpn_info->dad_max_moves,
2224 bgp->evpn_info->dad_time,
2225 bgp->evpn_info->dad_freeze ?
2226 "enable" : "disable",
2227 bgp->evpn_info->dad_freeze_time);
2228
2229 s = zclient->obuf;
2230 stream_reset(s);
2231 zclient_create_header(s, ZEBRA_DUPLICATE_ADDR_DETECTION,
2232 bgp->vrf_id);
2233 stream_putl(s, bgp->evpn_info->dup_addr_detect);
2234 stream_putl(s, bgp->evpn_info->dad_time);
2235 stream_putl(s, bgp->evpn_info->dad_max_moves);
2236 stream_putl(s, bgp->evpn_info->dad_freeze);
2237 stream_putl(s, bgp->evpn_info->dad_freeze_time);
2238 stream_putw_at(s, 0, stream_get_endp(s));
2239
2240 return zclient_send_message(zclient);
2241}
2242
121f9dee 2243static int rule_notify_owner(ZAPI_CALLBACK_ARGS)
30d50e6d
PG		 2244{
2245 uint32_t seqno, priority, unique;
2246 enum zapi_rule_notify_owner note;
2247 struct bgp_pbr_action *bgp_pbra;
ffee150e 2248 struct bgp_pbr_rule *bgp_pbr = NULL;
58a1d249 2249 char ifname[INTERFACE_NAMSIZ + 1];
30d50e6d
PG		 2250
2251 if (!zapi_rule_notify_decode(zclient->ibuf, &seqno, &priority, &unique,
58a1d249 2252 ifname, &note))
30d50e6d
PG		 2253 return -1;
2254
70eabd12 2255 bgp_pbra = bgp_pbr_action_rule_lookup(vrf_id, unique);
30d50e6d 2256 if (!bgp_pbra) {
ffee150e
PG		 2257 /* look in bgp pbr rule */
2258 bgp_pbr = bgp_pbr_rule_lookup(vrf_id, unique);
2259 if (!bgp_pbr && note != ZAPI_RULE_REMOVED) {
2260 if (BGP_DEBUG(zebra, ZEBRA))
2261 zlog_debug("%s: Fail to look BGP rule (%u)",
15569c58 2262 __func__, unique);
ffee150e
PG		 2263 return 0;
2264 }
30d50e6d
PG		 2265 }
2266
2267 switch (note) {
2268 case ZAPI_RULE_FAIL_INSTALL:
2269 if (BGP_DEBUG(zebra, ZEBRA))
15569c58 2270 zlog_debug("%s: Received RULE_FAIL_INSTALL", __func__);
ffee150e
PG		 2271 if (bgp_pbra) {
2272 bgp_pbra->installed = false;
2273 bgp_pbra->install_in_progress = false;
2274 } else {
2275 bgp_pbr->installed = false;
2276 bgp_pbr->install_in_progress = false;
2277 }
30d50e6d
PG		 2278 break;
2279 case ZAPI_RULE_INSTALLED:
ffee150e
PG		 2280 if (bgp_pbra) {
2281 bgp_pbra->installed = true;
2282 bgp_pbra->install_in_progress = false;
2283 } else {
ce3c0614
PG		 2284 struct bgp_path_info *path;
2285 struct bgp_path_info_extra *extra;
2286
ffee150e
PG		 2287 bgp_pbr->installed = true;
2288 bgp_pbr->install_in_progress = false;
2289 bgp_pbr->action->refcnt++;
ce3c0614
PG		 2290 /* link bgp_info to bgp_pbr */
2291 path = (struct bgp_path_info *)bgp_pbr->path;
2292 extra = bgp_path_info_extra_get(path);
f5925234
PG		 2293 listnode_add_force(&extra->bgp_fs_iprule,
2294 bgp_pbr);
ffee150e 2295 }
30d50e6d 2296 if (BGP_DEBUG(zebra, ZEBRA))
15569c58 2297 zlog_debug("%s: Received RULE_INSTALLED", __func__);
30d50e6d 2298 break;
f18a08f5 2299 case ZAPI_RULE_FAIL_REMOVE:
30d50e6d
PG		 2300 case ZAPI_RULE_REMOVED:
2301 if (BGP_DEBUG(zebra, ZEBRA))
15569c58 2302 zlog_debug("%s: Received RULE REMOVED", __func__);
30d50e6d
PG		 2303 break;
2304 }
2305
2306 return 0;
2307}
2308
121f9dee 2309static int ipset_notify_owner(ZAPI_CALLBACK_ARGS)
30d50e6d
PG		 2310{
2311 uint32_t unique;
2312 enum zapi_ipset_notify_owner note;
2313 struct bgp_pbr_match *bgp_pbim;
2314
2315 if (!zapi_ipset_notify_decode(zclient->ibuf,
2316 &unique,
2317 &note))
2318 return -1;
2319
2320 bgp_pbim = bgp_pbr_match_ipset_lookup(vrf_id, unique);
2321 if (!bgp_pbim) {
2322 if (BGP_DEBUG(zebra, ZEBRA))
88055124 2323 zlog_debug("%s: Fail to look BGP match ( %u, ID %u)",
15569c58 2324 __func__, note, unique);
30d50e6d
PG		 2325 return 0;
2326 }
2327
2328 switch (note) {
2329 case ZAPI_IPSET_FAIL_INSTALL:
2330 if (BGP_DEBUG(zebra, ZEBRA))
15569c58 2331 zlog_debug("%s: Received IPSET_FAIL_INSTALL", __func__);
30d50e6d
PG		 2332 bgp_pbim->installed = false;
2333 bgp_pbim->install_in_progress = false;
2334 break;
2335 case ZAPI_IPSET_INSTALLED:
2336 bgp_pbim->installed = true;
2337 bgp_pbim->install_in_progress = false;
2338 if (BGP_DEBUG(zebra, ZEBRA))
15569c58 2339 zlog_debug("%s: Received IPSET_INSTALLED", __func__);
30d50e6d 2340 break;
f18a08f5 2341 case ZAPI_IPSET_FAIL_REMOVE:
30d50e6d
PG		 2342 case ZAPI_IPSET_REMOVED:
2343 if (BGP_DEBUG(zebra, ZEBRA))
15569c58 2344 zlog_debug("%s: Received IPSET REMOVED", __func__);
30d50e6d
PG		 2345 break;
2346 }
2347
2348 return 0;
2349}
2350
121f9dee 2351static int ipset_entry_notify_owner(ZAPI_CALLBACK_ARGS)
30d50e6d
PG		 2352{
2353 uint32_t unique;
2354 char ipset_name[ZEBRA_IPSET_NAME_SIZE];
2355 enum zapi_ipset_entry_notify_owner note;
2356 struct bgp_pbr_match_entry *bgp_pbime;
2357
2358 if (!zapi_ipset_entry_notify_decode(
2359 zclient->ibuf,
2360 &unique,
2361 ipset_name,
2362 &note))
2363 return -1;
2364 bgp_pbime = bgp_pbr_match_ipset_entry_lookup(vrf_id,
2365 ipset_name,
2366 unique);
2367 if (!bgp_pbime) {
2368 if (BGP_DEBUG(zebra, ZEBRA))
15569c58
DA		 2369 zlog_debug(
2370 "%s: Fail to look BGP match entry (%u, ID %u)",
2371 __func__, note, unique);
30d50e6d
PG		 2372 return 0;
2373 }
2374
2375 switch (note) {
2376 case ZAPI_IPSET_ENTRY_FAIL_INSTALL:
2377 if (BGP_DEBUG(zebra, ZEBRA))
2378 zlog_debug("%s: Received IPSET_ENTRY_FAIL_INSTALL",
15569c58 2379 __func__);
30d50e6d
PG		 2380 bgp_pbime->installed = false;
2381 bgp_pbime->install_in_progress = false;
2382 break;
2383 case ZAPI_IPSET_ENTRY_INSTALLED:
b588b642 2384 {
9b6d8fcf 2385 struct bgp_path_info *path;
4b7e6066
DS		 2386 struct bgp_path_info_extra *extra;
2387
2388 bgp_pbime->installed = true;
2389 bgp_pbime->install_in_progress = false;
2390 if (BGP_DEBUG(zebra, ZEBRA))
2391 zlog_debug("%s: Received IPSET_ENTRY_INSTALLED",
15569c58 2392 __func__);
9b6d8fcf
DS		 2393 /* link bgp_path_info to bpme */
2394 path = (struct bgp_path_info *)bgp_pbime->path;
2395 extra = bgp_path_info_extra_get(path);
f5925234 2396 listnode_add_force(&extra->bgp_fs_pbr, bgp_pbime);
b588b642 2397 }
30d50e6d 2398 break;
f18a08f5 2399 case ZAPI_IPSET_ENTRY_FAIL_REMOVE:
30d50e6d
PG		 2400 case ZAPI_IPSET_ENTRY_REMOVED:
2401 if (BGP_DEBUG(zebra, ZEBRA))
2402 zlog_debug("%s: Received IPSET_ENTRY_REMOVED",
15569c58 2403 __func__);
30d50e6d
PG		 2404 break;
2405 }
2406 return 0;
2407}
2408
121f9dee 2409static int iptable_notify_owner(ZAPI_CALLBACK_ARGS)
c16a0a62
PG		 2410{
2411 uint32_t unique;
2412 enum zapi_iptable_notify_owner note;
2413 struct bgp_pbr_match *bgpm;
2414
2415 if (!zapi_iptable_notify_decode(
2416 zclient->ibuf,
2417 &unique,
2418 &note))
2419 return -1;
2420 bgpm = bgp_pbr_match_iptable_lookup(vrf_id, unique);
2421 if (!bgpm) {
2422 if (BGP_DEBUG(zebra, ZEBRA))
82e194ed 2423 zlog_debug("%s: Fail to look BGP iptable (%u %u)",
15569c58 2424 __func__, note, unique);
c16a0a62
PG		 2425 return 0;
2426 }
2427 switch (note) {
2428 case ZAPI_IPTABLE_FAIL_INSTALL:
2429 if (BGP_DEBUG(zebra, ZEBRA))
2430 zlog_debug("%s: Received IPTABLE_FAIL_INSTALL",
15569c58 2431 __func__);
c16a0a62
PG		 2432 bgpm->installed_in_iptable = false;
2433 bgpm->install_iptable_in_progress = false;
2434 break;
2435 case ZAPI_IPTABLE_INSTALLED:
2436 bgpm->installed_in_iptable = true;
2437 bgpm->install_iptable_in_progress = false;
2438 if (BGP_DEBUG(zebra, ZEBRA))
15569c58 2439 zlog_debug("%s: Received IPTABLE_INSTALLED", __func__);
a6b07429 2440 bgpm->action->refcnt++;
c16a0a62 2441 break;
f18a08f5 2442 case ZAPI_IPTABLE_FAIL_REMOVE:
c16a0a62
PG		 2443 case ZAPI_IPTABLE_REMOVED:
2444 if (BGP_DEBUG(zebra, ZEBRA))
15569c58 2445 zlog_debug("%s: Received IPTABLE REMOVED", __func__);
c16a0a62
PG		 2446 break;
2447 }
2448 return 0;
2449}
2450
a77e2f4b
S		 2451/* Process route notification messages from RIB */
2452static int bgp_zebra_route_notify_owner(int command, struct zclient *zclient,
2453 zebra_size_t length, vrf_id_t vrf_id)
2454{
2455 struct prefix p;
2456 enum zapi_route_notify_owner note;
2457 uint32_t table_id;
a77e2f4b
S		 2458 afi_t afi;
2459 safi_t safi;
2460 struct bgp_dest *dest;
2461 struct bgp *bgp;
2462 struct bgp_path_info *pi, *new_select;
2463
2464 if (!zapi_route_notify_decode(zclient->ibuf, &p, &table_id, &note,
2465 &afi, &safi)) {
cc42c4f0 2466 zlog_err("%s : error in msg decode", __func__);
a77e2f4b
S		 2467 return -1;
2468 }
2469
2470 /* Get the bgp instance */
2471 bgp = bgp_lookup_by_vrf_id(vrf_id);
2472 if (!bgp) {
2473 flog_err(EC_BGP_INVALID_BGP_INSTANCE,
cc42c4f0
DS		 2474 "%s : bgp instance not found vrf %d", __func__,
2475 vrf_id);
a77e2f4b
S		 2476 return -1;
2477 }
2478
a77e2f4b
S		 2479 /* Find the bgp route node */
2480 dest = bgp_afi_node_lookup(bgp->rib[afi][safi], afi, safi, &p,
2481 &bgp->vrf_prd);
2482 if (!dest)
2483 return -1;
2484
a77e2f4b
S		 2485 switch (note) {
2486 case ZAPI_ROUTE_INSTALLED:
2487 new_select = NULL;
2488 /* Clear the flags so that route can be processed */
2489 if (CHECK_FLAG(dest->flags,
2490 BGP_NODE_FIB_INSTALL_PENDING)) {
2491 UNSET_FLAG(dest->flags,
2492 BGP_NODE_FIB_INSTALL_PENDING);
2493 SET_FLAG(dest->flags, BGP_NODE_FIB_INSTALLED);
2494 if (BGP_DEBUG(zebra, ZEBRA))
1a3519b6 2495 zlog_debug("route %pRN : INSTALLED", dest);
a77e2f4b
S		 2496 /* Find the best route */
2497 for (pi = dest->info; pi; pi = pi->next) {
2498 /* Process aggregate route */
2499 bgp_aggregate_increment(bgp, &p, pi,
2500 afi, safi);
2501 if (CHECK_FLAG(pi->flags,
2502 BGP_PATH_SELECTED))
2503 new_select = pi;
2504 }
2505 /* Advertise the route */
2506 if (new_select)
2507 group_announce_route(bgp, afi, safi,
2508 dest, new_select);
2509 else {
2510 flog_err(EC_BGP_INVALID_ROUTE,
1a3519b6
DS		 2511 "selected route %pRN not found",
2512 dest);
e71ad4b6
DA		 2513
2514 bgp_dest_unlock_node(dest);
a77e2f4b
S		 2515 return -1;
2516 }
2517 }
2518 break;
2519 case ZAPI_ROUTE_REMOVED:
2520 /* Route deleted from dataplane, reset the installed flag
2521 * so that route can be reinstalled when client sends
2522 * route add later
2523 */
2524 UNSET_FLAG(dest->flags, BGP_NODE_FIB_INSTALLED);
1a3519b6
DS		 2525 if (BGP_DEBUG(zebra, ZEBRA))
2526 zlog_debug("route %pRN: Removed from Fib", dest);
a77e2f4b
S		 2527 break;
2528 case ZAPI_ROUTE_FAIL_INSTALL:
1a3519b6
DS		 2529 if (BGP_DEBUG(zebra, ZEBRA))
2530 zlog_debug("route: %pRN Failed to Install into Fib",
2531 dest);
a77e2f4b
S		 2532 /* Error will be logged by zebra module */
2533 break;
2534 case ZAPI_ROUTE_BETTER_ADMIN_WON:
1a3519b6
DS		 2535 if (BGP_DEBUG(zebra, ZEBRA))
2536 zlog_debug("route: %pRN removed due to better admin won",
2537 dest);
a77e2f4b
S		 2538 /* No action required */
2539 break;
2540 case ZAPI_ROUTE_REMOVE_FAIL:
1a3519b6
DS		 2541 zlog_warn("%s: Route %pRN failure to remove",
2542 __func__, dest);
a77e2f4b
S		 2543 break;
2544 }
e71ad4b6
DA		 2545
2546 bgp_dest_unlock_node(dest);
a77e2f4b
S		 2547 return 0;
2548}
2549
6cfe5d15
PG		 2550/* this function is used to forge ip rule,
2551 * - either for iptable/ipset using fwmark id
121f9dee 2552 * - or for sample ip rule cmd
6cfe5d15 2553 */
30d50e6d 2554static void bgp_encode_pbr_rule_action(struct stream *s,
6cfe5d15
PG		 2555 struct bgp_pbr_action *pbra,
2556 struct bgp_pbr_rule *pbr)
30d50e6d 2557{
6cfe5d15 2558 struct prefix pfx;
f01e580f 2559 uint8_t fam = AF_INET;
e95666cb 2560 char ifname[INTERFACE_NAMSIZ];
30d50e6d 2561
9f1f03ec 2562 if (pbra->nh.type == NEXTHOP_TYPE_IPV6)
f01e580f 2563 fam = AF_INET6;
30d50e6d 2564 stream_putl(s, 0); /* seqno unused */
8112a7a0
PG		 2565 if (pbr)
2566 stream_putl(s, pbr->priority);
2567 else
2568 stream_putl(s, 0);
2569 /* ruleno unused - priority change
2570 * ruleno permits distinguishing various FS PBR entries
2571 * - FS PBR entries based on ipset/iptables
2572 * - FS PBR entries based on iprule
2573 * the latter may contain default routing information injected by FS
2574 */
6cfe5d15
PG		 2575 if (pbr)
2576 stream_putl(s, pbr->unique);
2577 else
2578 stream_putl(s, pbra->unique);
f56697ef 2579 stream_putc(s, 0); /* ip protocol being used */
6cfe5d15
PG		 2580 if (pbr && pbr->flags & MATCH_IP_SRC_SET)
2581 memcpy(&pfx, &(pbr->src), sizeof(struct prefix));
2582 else {
2583 memset(&pfx, 0, sizeof(pfx));
f01e580f 2584 pfx.family = fam;
6cfe5d15
PG		 2585 }
2586 stream_putc(s, pfx.family);
2587 stream_putc(s, pfx.prefixlen);
2588 stream_put(s, &pfx.u.prefix, prefix_blen(&pfx));
30d50e6d
PG		 2589
2590 stream_putw(s, 0); /* src port */
2591
6cfe5d15
PG		 2592 if (pbr && pbr->flags & MATCH_IP_DST_SET)
2593 memcpy(&pfx, &(pbr->dst), sizeof(struct prefix));
2594 else {
2595 memset(&pfx, 0, sizeof(pfx));
f01e580f 2596 pfx.family = fam;
6cfe5d15
PG		 2597 }
2598 stream_putc(s, pfx.family);
2599 stream_putc(s, pfx.prefixlen);
2600 stream_put(s, &pfx.u.prefix, prefix_blen(&pfx));
30d50e6d
PG		 2601
2602 stream_putw(s, 0); /* dst port */
e95666cb 2603 stream_putc(s, 0); /* dsfield */
6cfe5d15
PG		 2604 /* if pbr present, fwmark is not used */
2605 if (pbr)
2606 stream_putl(s, 0);
2607 else
2608 stream_putl(s, pbra->fwmark); /* fwmark */
30d50e6d
PG		 2609
2610 stream_putl(s, pbra->table_id);
2611
e95666cb
DS		 2612 memset(ifname, 0, sizeof(ifname));
2613 stream_put(s, ifname, INTERFACE_NAMSIZ); /* ifname unused */
30d50e6d
PG		 2614}
2615
2616static void bgp_encode_pbr_ipset_match(struct stream *s,
2617 struct bgp_pbr_match *pbim)
2618{
2619 stream_putl(s, pbim->unique);
2620 stream_putl(s, pbim->type);
a60b7031 2621 stream_putc(s, pbim->family);
30d50e6d
PG		 2622 stream_put(s, pbim->ipset_name,
2623 ZEBRA_IPSET_NAME_SIZE);
30d50e6d
PG		 2624}
2625
2626static void bgp_encode_pbr_ipset_entry_match(struct stream *s,
2627 struct bgp_pbr_match_entry *pbime)
2628{
2629 stream_putl(s, pbime->unique);
2630 /* check that back pointer is not null */
2631 stream_put(s, pbime->backpointer->ipset_name,
2632 ZEBRA_IPSET_NAME_SIZE);
2633
2634 stream_putc(s, pbime->src.family);
2635 stream_putc(s, pbime->src.prefixlen);
2636 stream_put(s, &pbime->src.u.prefix, prefix_blen(&pbime->src));
2637
2638 stream_putc(s, pbime->dst.family);
2639 stream_putc(s, pbime->dst.prefixlen);
2640 stream_put(s, &pbime->dst.u.prefix, prefix_blen(&pbime->dst));
f730e566
PG		 2641
2642 stream_putw(s, pbime->src_port_min);
2643 stream_putw(s, pbime->src_port_max);
2644 stream_putw(s, pbime->dst_port_min);
2645 stream_putw(s, pbime->dst_port_max);
2646 stream_putc(s, pbime->proto);
30d50e6d
PG		 2647}
2648
c16a0a62
PG		 2649static void bgp_encode_pbr_iptable_match(struct stream *s,
2650 struct bgp_pbr_action *bpa,
2651 struct bgp_pbr_match *pbm)
2652{
2653 stream_putl(s, pbm->unique2);
2654
2655 stream_putl(s, pbm->type);
2656
2657 stream_putl(s, pbm->flags);
2658
2659 /* TODO: correlate with what is contained
2660 * into bgp_pbr_action.
2661 * currently only forward supported
2662 */
2663 if (bpa->nh.type == NEXTHOP_TYPE_BLACKHOLE)
2664 stream_putl(s, ZEBRA_IPTABLES_DROP);
2665 else
2666 stream_putl(s, ZEBRA_IPTABLES_FORWARD);
2667 stream_putl(s, bpa->fwmark);
2668 stream_put(s, pbm->ipset_name,
2669 ZEBRA_IPSET_NAME_SIZE);
a60b7031 2670 stream_putc(s, pbm->family);
83360720
PG		 2671 stream_putw(s, pbm->pkt_len_min);
2672 stream_putw(s, pbm->pkt_len_max);
2da7d62e
PG		 2673 stream_putw(s, pbm->tcp_flags);
2674 stream_putw(s, pbm->tcp_mask_flags);
4977bd6c 2675 stream_putc(s, pbm->dscp_value);
6f5617d8 2676 stream_putc(s, pbm->fragment);
f449d223 2677 stream_putc(s, pbm->protocol);
a60b7031 2678 stream_putw(s, pbm->flow_label);
c16a0a62
PG		 2679}
2680
ad4cbda1 2681/* BGP has established connection with Zebra. */
d62a17ae 2682static void bgp_zebra_connected(struct zclient *zclient)
7076bb2f 2683{
d62a17ae 2684 struct bgp *bgp;
7076bb2f 2685
d62a17ae 2686 zclient_num_connects++; /* increment even if not responding */
afbb1c59 2687
6bfcd0f1
IR		 2688 /* Send the client registration */
2689 bfd_client_sendmsg(zclient, ZEBRA_BFD_CLIENT_REGISTER, VRF_DEFAULT);
2690
d62a17ae 2691 /* At this point, we may or may not have BGP instances configured, but
2692 * we're only interested in the default VRF (others wouldn't have learnt
2693 * the VRF from Zebra yet.)
2694 */
2695 bgp = bgp_get_default();
2696 if (!bgp)
2697 return;
ad4cbda1 2698
d62a17ae 2699 bgp_zebra_instance_register(bgp);
ad4cbda1 2700
955bfd98 2701 /* tell label pool that zebra is connected */
e70e9f8e 2702 bgp_lp_event_zebra_up();
955bfd98 2703
d62a17ae 2704 /* TODO - What if we have peers and networks configured, do we have to
2705 * kick-start them?
2706 */
85ef4179 2707 BGP_GR_ROUTER_DETECT_AND_SEND_CAPABILITY_TO_ZEBRA(bgp, bgp->peer);
7076bb2f
FL		 2708}
2709
c44ab6f1
AK		 2710static int bgp_zebra_process_local_es_add(ZAPI_CALLBACK_ARGS)
2711{
2712 esi_t esi;
2713 struct bgp *bgp = NULL;
2714 struct stream *s = NULL;
2715 char buf[ESI_STR_LEN];
2716 struct in_addr originator_ip;
2717 uint8_t active;
74be8313 2718 uint8_t bypass;
74e2bd89 2719 uint16_t df_pref;
c44ab6f1
AK		 2720
2721 bgp = bgp_lookup_by_vrf_id(vrf_id);
2722 if (!bgp)
2723 return 0;
2724
2725 s = zclient->ibuf;
2726 stream_get(&esi, s, sizeof(esi_t));
2727 originator_ip.s_addr = stream_get_ipv4(s);
2728 active = stream_getc(s);
74e2bd89 2729 df_pref = stream_getw(s);
74be8313 2730 bypass = stream_getc(s);
c44ab6f1
AK		 2731
2732 if (BGP_DEBUG(zebra, ZEBRA))
74e2bd89 2733 zlog_debug(
74be8313
AK		 2734 "Rx add ESI %s originator-ip %pI4 active %u df_pref %u %s",
2735 esi_to_str(&esi, buf, sizeof(buf)), &originator_ip,
2736 active, df_pref, bypass ? "bypass" : "");
c44ab6f1 2737
74be8313
AK		 2738 bgp_evpn_local_es_add(bgp, &esi, originator_ip, active, df_pref,
2739 !!bypass);
c44ab6f1
AK		 2740
2741 return 0;
2742}
2743
2744static int bgp_zebra_process_local_es_del(ZAPI_CALLBACK_ARGS)
50f74cf1 2745{
2746 esi_t esi;
2747 struct bgp *bgp = NULL;
2748 struct stream *s = NULL;
2749 char buf[ESI_STR_LEN];
50f74cf1 2750
2751 memset(&esi, 0, sizeof(esi_t));
c44ab6f1
AK		 2752 bgp = bgp_lookup_by_vrf_id(vrf_id);
2753 if (!bgp)
2754 return 0;
2755
2756 s = zclient->ibuf;
2757 stream_get(&esi, s, sizeof(esi_t));
2758
2759 if (BGP_DEBUG(zebra, ZEBRA))
2760 zlog_debug("Rx del ESI %s",
2761 esi_to_str(&esi, buf, sizeof(buf)));
2762
2763 bgp_evpn_local_es_del(bgp, &esi);
2764
2765 return 0;
2766}
2767
2768static int bgp_zebra_process_local_es_evi(ZAPI_CALLBACK_ARGS)
2769{
2770 esi_t esi;
2771 vni_t vni;
2772 struct bgp *bgp;
2773 struct stream *s;
2774 char buf[ESI_STR_LEN];
50f74cf1 2775
2776 bgp = bgp_lookup_by_vrf_id(vrf_id);
2777 if (!bgp)
2778 return 0;
2779
2780 s = zclient->ibuf;
2781 stream_get(&esi, s, sizeof(esi_t));
c44ab6f1 2782 vni = stream_getl(s);
50f74cf1 2783
2784 if (BGP_DEBUG(zebra, ZEBRA))
c44ab6f1
AK		 2785 zlog_debug("Rx %s ESI %s VNI %u",
2786 ZEBRA_VNI_ADD ? "add" : "del",
2787 esi_to_str(&esi, buf, sizeof(buf)), vni);
50f74cf1 2788
c44ab6f1
AK		 2789 if (cmd == ZEBRA_LOCAL_ES_EVI_ADD)
2790 bgp_evpn_local_es_evi_add(bgp, &esi, vni);
50f74cf1 2791 else
c44ab6f1
AK		 2792 bgp_evpn_local_es_evi_del(bgp, &esi, vni);
2793
50f74cf1 2794 return 0;
2795}
2796
121f9dee 2797static int bgp_zebra_process_local_l3vni(ZAPI_CALLBACK_ARGS)
fe1dc5a3 2798{
c48d9f5f 2799 int filter = 0;
b67a60d2 2800 vni_t l3vni = 0;
14e814ea 2801 struct ethaddr svi_rmac, vrr_rmac = {.octet = {0} };
b67a60d2 2802 struct in_addr originator_ip;
fe1dc5a3 2803 struct stream *s;
0483af6e 2804 ifindex_t svi_ifindex;
14e814ea 2805 bool is_anycast_mac = false;
fe1dc5a3 2806
14e814ea 2807 memset(&svi_rmac, 0, sizeof(struct ethaddr));
b67a60d2 2808 memset(&originator_ip, 0, sizeof(struct in_addr));
fe1dc5a3
MK		 2809 s = zclient->ibuf;
2810 l3vni = stream_getl(s);
b67a60d2 2811 if (cmd == ZEBRA_L3VNI_ADD) {
14e814ea 2812 stream_get(&svi_rmac, s, sizeof(struct ethaddr));
b67a60d2 2813 originator_ip.s_addr = stream_get_ipv4(s);
c48d9f5f 2814 stream_get(&filter, s, sizeof(int));
0483af6e 2815 svi_ifindex = stream_getl(s);
14e814ea
CS		 2816 stream_get(&vrr_rmac, s, sizeof(struct ethaddr));
2817 is_anycast_mac = stream_getl(s);
fe1dc5a3 2818
0483af6e 2819 if (BGP_DEBUG(zebra, ZEBRA))
c0d72166
DS		 2820 zlog_debug(
2821 "Rx L3-VNI ADD VRF %s VNI %u RMAC svi-mac %pEA vrr-mac %pEA filter %s svi-if %u",
2822 vrf_id_to_name(vrf_id), l3vni, &svi_rmac,
2823 &vrr_rmac,
2824 filter ? "prefix-routes-only" : "none",
2825 svi_ifindex);
fe1dc5a3 2826
14e814ea
CS		 2827 bgp_evpn_local_l3vni_add(l3vni, vrf_id, &svi_rmac, &vrr_rmac,
2828 originator_ip, filter, svi_ifindex,
2829 is_anycast_mac);
0483af6e 2830 } else {
2831 if (BGP_DEBUG(zebra, ZEBRA))
2832 zlog_debug("Rx L3-VNI DEL VRF %s VNI %u",
2833 vrf_id_to_name(vrf_id), l3vni);
2834
fe1dc5a3 2835 bgp_evpn_local_l3vni_del(l3vni, vrf_id);
0483af6e 2836 }
fe1dc5a3
MK		 2837
2838 return 0;
2839}
2840
121f9dee 2841static int bgp_zebra_process_local_vni(ZAPI_CALLBACK_ARGS)
128ea8ab 2842{
d62a17ae 2843 struct stream *s;
2844 vni_t vni;
2845 struct bgp *bgp;
a4d82a8a 2846 struct in_addr vtep_ip = {INADDR_ANY};
29c53922 2847 vrf_id_t tenant_vrf_id = VRF_DEFAULT;
76d07c7a 2848 struct in_addr mcast_grp = {INADDR_ANY};
9daa5d47 2849 ifindex_t svi_ifindex = 0;
d62a17ae 2850
2851 s = zclient->ibuf;
2852 vni = stream_getl(s);
121f9dee 2853 if (cmd == ZEBRA_VNI_ADD) {
d62a17ae 2854 vtep_ip.s_addr = stream_get_ipv4(s);
29c53922 2855 stream_get(&tenant_vrf_id, s, sizeof(vrf_id_t));
76d07c7a 2856 mcast_grp.s_addr = stream_get_ipv4(s);
9daa5d47 2857 stream_get(&svi_ifindex, s, sizeof(ifindex_t));
29c53922
MK		 2858 }
2859
d62a17ae 2860 bgp = bgp_lookup_by_vrf_id(vrf_id);
2861 if (!bgp)
2862 return 0;
2863
2864 if (BGP_DEBUG(zebra, ZEBRA))
9daa5d47
AD		 2865 zlog_debug(
2866 "Rx VNI %s VRF %s VNI %u tenant-vrf %s SVI ifindex %u",
2867 (cmd == ZEBRA_VNI_ADD) ? "add" : "del",
2868 vrf_id_to_name(vrf_id), vni,
2869 vrf_id_to_name(tenant_vrf_id), svi_ifindex);
d62a17ae 2870
121f9dee 2871 if (cmd == ZEBRA_VNI_ADD)
d62a17ae 2872 return bgp_evpn_local_vni_add(
975a328e
DA		 2873 bgp, vni,
2874 vtep_ip.s_addr != INADDR_ANY ? vtep_ip : bgp->router_id,
9daa5d47 2875 tenant_vrf_id, mcast_grp, svi_ifindex);
d62a17ae 2876 else
2877 return bgp_evpn_local_vni_del(bgp, vni);
128ea8ab 2878}
2879
121f9dee 2880static int bgp_zebra_process_local_macip(ZAPI_CALLBACK_ARGS)
128ea8ab 2881{
d62a17ae 2882 struct stream *s;
2883 vni_t vni;
2884 struct bgp *bgp;
2885 struct ethaddr mac;
2886 struct ipaddr ip;
2887 int ipa_len;
f07e1c99 2888 uint8_t flags = 0;
2889 uint32_t seqnum = 0;
ec0ab544 2890 int state = 0;
c44ab6f1
AK		 2891 char buf2[ESI_STR_LEN];
2892 esi_t esi;
d62a17ae 2893
2894 memset(&ip, 0, sizeof(ip));
2895 s = zclient->ibuf;
2896 vni = stream_getl(s);
28328ea9 2897 stream_get(&mac.octet, s, ETH_ALEN);
d62a17ae 2898 ipa_len = stream_getl(s);
2899 if (ipa_len != 0 && ipa_len != IPV4_MAX_BYTELEN
2900 && ipa_len != IPV6_MAX_BYTELEN) {
e50f7cfd 2901 flog_err(EC_BGP_MACIP_LEN,
1c50c1c0 2902 "%u:Recv MACIP %s with invalid IP addr length %d",
121f9dee 2903 vrf_id, (cmd == ZEBRA_MACIP_ADD) ? "Add" : "Del",
1c50c1c0 2904 ipa_len);
d62a17ae 2905 return -1;
2906 }
2907
2908 if (ipa_len) {
2909 ip.ipa_type =
2910 (ipa_len == IPV4_MAX_BYTELEN) ? IPADDR_V4 : IPADDR_V6;
2911 stream_get(&ip.ip.addr, s, ipa_len);
2912 }
121f9dee 2913 if (cmd == ZEBRA_MACIP_ADD) {
f07e1c99 2914 flags = stream_getc(s);
2915 seqnum = stream_getl(s);
c44ab6f1 2916 stream_get(&esi, s, sizeof(esi_t));
ec0ab544
AK		 2917 } else {
2918 state = stream_getl(s);
35fb444b 2919 memset(&esi, 0, sizeof(esi_t));
f07e1c99 2920 }
d62a17ae 2921
2922 bgp = bgp_lookup_by_vrf_id(vrf_id);
2923 if (!bgp)
2924 return 0;
2925
2926 if (BGP_DEBUG(zebra, ZEBRA))
c0d72166 2927 zlog_debug(
2dd0dde7 2928 "%u:Recv MACIP %s f 0x%x MAC %pEA IP %pIA VNI %u seq %u state %d ESI %s",
c0d72166
DS		 2929 vrf_id, (cmd == ZEBRA_MACIP_ADD) ? "Add" : "Del", flags,
2930 &mac, &ip, vni, seqnum, state,
2931 esi_to_str(&esi, buf2, sizeof(buf2)));
d62a17ae 2932
121f9dee 2933 if (cmd == ZEBRA_MACIP_ADD)
f07e1c99 2934 return bgp_evpn_local_macip_add(bgp, vni, &mac, &ip,
c44ab6f1 2935 flags, seqnum, &esi);
d62a17ae 2936 else
ec0ab544 2937 return bgp_evpn_local_macip_del(bgp, vni, &mac, &ip, state);
128ea8ab 2938}
6aeb9e78 2939
121f9dee 2940static void bgp_zebra_process_local_ip_prefix(ZAPI_CALLBACK_ARGS)
31310b25
MK		 2941{
2942 struct stream *s = NULL;
2943 struct bgp *bgp_vrf = NULL;
2944 struct prefix p;
31310b25
MK		 2945
2946 memset(&p, 0, sizeof(struct prefix));
2947 s = zclient->ibuf;
2948 stream_get(&p, s, sizeof(struct prefix));
2949
2950 bgp_vrf = bgp_lookup_by_vrf_id(vrf_id);
2951 if (!bgp_vrf)
2952 return;
2953
2954 if (BGP_DEBUG(zebra, ZEBRA))
2dbe669b 2955 zlog_debug("Recv prefix %pFX %s on vrf %s", &p,
31310b25
MK		 2956 (cmd == ZEBRA_IP_PREFIX_ROUTE_ADD) ? "ADD" : "DEL",
2957 vrf_id_to_name(vrf_id));
2958
2959 if (cmd == ZEBRA_IP_PREFIX_ROUTE_ADD) {
2960
2961 if (p.family == AF_INET)
d90b788e
A		 2962 bgp_evpn_advertise_type5_route(bgp_vrf, &p, NULL,
2963 AFI_IP, SAFI_UNICAST);
31310b25 2964 else
d90b788e
A		 2965 bgp_evpn_advertise_type5_route(bgp_vrf, &p, NULL,
2966 AFI_IP6, SAFI_UNICAST);
31310b25
MK		 2967
2968 } else {
2969 if (p.family == AF_INET)
d90b788e
A		 2970 bgp_evpn_withdraw_type5_route(bgp_vrf, &p, AFI_IP,
2971 SAFI_UNICAST);
31310b25 2972 else
d90b788e
A		 2973 bgp_evpn_withdraw_type5_route(bgp_vrf, &p, AFI_IP6,
2974 SAFI_UNICAST);
31310b25
MK		 2975 }
2976}
2977
121f9dee 2978static void bgp_zebra_process_label_chunk(ZAPI_CALLBACK_ARGS)
955bfd98
PZ		 2979{
2980 struct stream *s = NULL;
2981 uint8_t response_keep;
2982 uint32_t first;
2983 uint32_t last;
aec865e4
FR		 2984 uint8_t proto;
2985 unsigned short instance;
955bfd98
PZ		 2986
2987 s = zclient->ibuf;
aec865e4
FR		 2988 STREAM_GETC(s, proto);
2989 STREAM_GETW(s, instance);
955bfd98
PZ		 2990 STREAM_GETC(s, response_keep);
2991 STREAM_GETL(s, first);
2992 STREAM_GETL(s, last);
2993
aec865e4 2994 if (zclient->redist_default != proto) {
e50f7cfd 2995 flog_err(EC_BGP_LM_ERROR, "Got LM msg with wrong proto %u",
1c50c1c0 2996 proto);
aec865e4
FR		 2997 return;
2998 }
2999 if (zclient->instance != instance) {
e50f7cfd 3000 flog_err(EC_BGP_LM_ERROR, "Got LM msg with wrong instance %u",
1c50c1c0 3001 proto);
aec865e4
FR		 3002 return;
3003 }
3004
955bfd98
PZ		 3005 if (first > last ||
3006 first < MPLS_LABEL_UNRESERVED_MIN ||
3007 last > MPLS_LABEL_UNRESERVED_MAX) {
3008
e50f7cfd 3009 flog_err(EC_BGP_LM_ERROR, "%s: Invalid Label chunk: %u - %u",
1c50c1c0 3010 __func__, first, last);
955bfd98
PZ		 3011 return;
3012 }
3013 if (BGP_DEBUG(zebra, ZEBRA)) {
3014 zlog_debug("Label Chunk assign: %u - %u (%u) ",
3015 first, last, response_keep);
3016 }
3017
e70e9f8e 3018 bgp_lp_event_chunk(response_keep, first, last);
955bfd98
PZ		 3019
3020stream_failure: /* for STREAM_GETX */
3021 return;
3022}
3023
342213ea
DS		 3024extern struct zebra_privs_t bgpd_privs;
3025
138c5a74
DS		 3026static int bgp_ifp_create(struct interface *ifp)
3027{
ef7bd2a3
DS		 3028 struct bgp *bgp;
3029
3030 if (BGP_DEBUG(zebra, ZEBRA))
3031 zlog_debug("Rx Intf add VRF %u IF %s", ifp->vrf_id, ifp->name);
3032
3033 bgp = bgp_lookup_by_vrf_id(ifp->vrf_id);
3034 if (!bgp)
3035 return 0;
3036
3037 bgp_mac_add_mac_entry(ifp);
3038
3039 bgp_update_interface_nbrs(bgp, ifp, ifp);
0d020cd6 3040 hook_call(bgp_vrf_status_changed, bgp, ifp);
138c5a74
DS		 3041 return 0;
3042}
3043
a0281b2e
HS		 3044static void bgp_zebra_process_srv6_locator_chunk(ZAPI_CALLBACK_ARGS)
3045{
3046 struct stream *s = NULL;
7de4c885
HS		 3047 struct bgp *bgp = bgp_get_default();
3048 struct listnode *node;
3049 struct prefix_ipv6 *c;
1bda3e62 3050 struct srv6_locator_chunk s6c = {};
3a0220e4 3051 struct prefix_ipv6 *chunk = NULL;
a0281b2e
HS		 3052
3053 s = zclient->ibuf;
3a0220e4 3054 zapi_srv6_locator_chunk_decode(s, &s6c);
a0281b2e 3055
3a0220e4
HS		 3056 if (strcmp(bgp->srv6_locator_name, s6c.locator_name) != 0) {
3057 zlog_err("%s: Locator name unmatch %s:%s", __func__,
3058 bgp->srv6_locator_name, s6c.locator_name);
a0281b2e
HS		 3059 return;
3060 }
3061
a0281b2e 3062 for (ALL_LIST_ELEMENTS_RO(bgp->srv6_locator_chunks, node, c)) {
3a0220e4 3063 if (!prefix_cmp(c, &s6c.prefix))
a0281b2e
HS		 3064 return;
3065 }
3066
3a0220e4
HS		 3067 chunk = prefix_ipv6_new();
3068 *chunk = s6c.prefix;
a0281b2e
HS		 3069 listnode_add(bgp->srv6_locator_chunks, chunk);
3070 vpn_leak_postchange_all();
a0281b2e
HS		 3071}
3072
f533be73 3073void bgp_zebra_init(struct thread_master *master, unsigned short instance)
718e3744 3074{
d62a17ae 3075 zclient_num_connects = 0;
3076
138c5a74
DS		 3077 if_zapi_callbacks(bgp_ifp_create, bgp_ifp_up,
3078 bgp_ifp_down, bgp_ifp_destroy);
3079
d62a17ae 3080 /* Set default values. */
26f63a1e 3081 zclient = zclient_new(master, &zclient_options_default);
342213ea 3082 zclient_init(zclient, ZEBRA_ROUTE_BGP, 0, &bgpd_privs);
d62a17ae 3083 zclient->zebra_connected = bgp_zebra_connected;
3084 zclient->router_id_update = bgp_router_id_update;
d62a17ae 3085 zclient->interface_address_add = bgp_interface_address_add;
3086 zclient->interface_address_delete = bgp_interface_address_delete;
3087 zclient->interface_nbr_address_add = bgp_interface_nbr_address_add;
3088 zclient->interface_nbr_address_delete =
3089 bgp_interface_nbr_address_delete;
3090 zclient->interface_vrf_update = bgp_interface_vrf_update;
74489921
RW		 3091 zclient->redistribute_route_add = zebra_read_route;
3092 zclient->redistribute_route_del = zebra_read_route;
d62a17ae 3093 zclient->nexthop_update = bgp_read_nexthop_update;
3094 zclient->import_check_update = bgp_read_import_check_update;
3095 zclient->fec_update = bgp_read_fec_update;
c44ab6f1
AK		 3096 zclient->local_es_add = bgp_zebra_process_local_es_add;
3097 zclient->local_es_del = bgp_zebra_process_local_es_del;
d62a17ae 3098 zclient->local_vni_add = bgp_zebra_process_local_vni;
c44ab6f1
AK		 3099 zclient->local_es_evi_add = bgp_zebra_process_local_es_evi;
3100 zclient->local_es_evi_del = bgp_zebra_process_local_es_evi;
d62a17ae 3101 zclient->local_vni_del = bgp_zebra_process_local_vni;
3102 zclient->local_macip_add = bgp_zebra_process_local_macip;
3103 zclient->local_macip_del = bgp_zebra_process_local_macip;
fe1dc5a3
MK		 3104 zclient->local_l3vni_add = bgp_zebra_process_local_l3vni;
3105 zclient->local_l3vni_del = bgp_zebra_process_local_l3vni;
31310b25
MK		 3106 zclient->local_ip_prefix_add = bgp_zebra_process_local_ip_prefix;
3107 zclient->local_ip_prefix_del = bgp_zebra_process_local_ip_prefix;
955bfd98 3108 zclient->label_chunk = bgp_zebra_process_label_chunk;
30d50e6d
PG		 3109 zclient->rule_notify_owner = rule_notify_owner;
3110 zclient->ipset_notify_owner = ipset_notify_owner;
3111 zclient->ipset_entry_notify_owner = ipset_entry_notify_owner;
c16a0a62 3112 zclient->iptable_notify_owner = iptable_notify_owner;
a77e2f4b 3113 zclient->route_notify_owner = bgp_zebra_route_notify_owner;
f533be73 3114 zclient->instance = instance;
7de4c885
HS		 3115 zclient->process_srv6_locator_chunk =
3116 bgp_zebra_process_srv6_locator_chunk;
718e3744 3117}
bb86c601 3118
d62a17ae 3119void bgp_zebra_destroy(void)
bb86c601 3120{
d62a17ae 3121 if (zclient == NULL)
3122 return;
3123 zclient_stop(zclient);
3124 zclient_free(zclient);
3125 zclient = NULL;
bb86c601 3126}
afbb1c59 3127
d62a17ae 3128int bgp_zebra_num_connects(void)
afbb1c59 3129{
d62a17ae 3130 return zclient_num_connects;
afbb1c59 3131}
30d50e6d 3132
6cfe5d15
PG		 3133void bgp_send_pbr_rule_action(struct bgp_pbr_action *pbra,
3134 struct bgp_pbr_rule *pbr,
3135 bool install)
30d50e6d
PG		 3136{
3137 struct stream *s;
3138
6cfe5d15 3139 if (pbra->install_in_progress && !pbr)
30d50e6d 3140 return;
6cfe5d15
PG		 3141 if (pbr && pbr->install_in_progress)
3142 return;
3143 if (BGP_DEBUG(zebra, ZEBRA)) {
3144 if (pbr)
15569c58 3145 zlog_debug("%s: table %d (ip rule) %d", __func__,
6cfe5d15
PG		 3146 pbra->table_id, install);
3147 else
15569c58 3148 zlog_debug("%s: table %d fwmark %d %d", __func__,
6cfe5d15
PG		 3149 pbra->table_id, pbra->fwmark, install);
3150 }
30d50e6d
PG		 3151 s = zclient->obuf;
3152 stream_reset(s);
3153
3154 zclient_create_header(s,
3155 install ? ZEBRA_RULE_ADD : ZEBRA_RULE_DELETE,
3156 VRF_DEFAULT);
3157 stream_putl(s, 1); /* send one pbr action */
3158
6cfe5d15 3159 bgp_encode_pbr_rule_action(s, pbra, pbr);
30d50e6d
PG		 3160
3161 stream_putw_at(s, 0, stream_get_endp(s));
8a3f8f2e
DS		 3162 if ((zclient_send_message(zclient) != ZCLIENT_SEND_FAILURE)
3163 && install) {
6cfe5d15
PG		 3164 if (!pbr)
3165 pbra->install_in_progress = true;
3166 else
3167 pbr->install_in_progress = true;
3168 }
30d50e6d
PG		 3169}
3170
3171void bgp_send_pbr_ipset_match(struct bgp_pbr_match *pbrim, bool install)
3172{
3173 struct stream *s;
3174
3175 if (pbrim->install_in_progress)
3176 return;
f0936054 3177 if (BGP_DEBUG(zebra, ZEBRA))
15569c58
DA		 3178 zlog_debug("%s: name %s type %d %d, ID %u", __func__,
3179 pbrim->ipset_name, pbrim->type, install,
3180 pbrim->unique);
30d50e6d
PG		 3181 s = zclient->obuf;
3182 stream_reset(s);
3183
3184 zclient_create_header(s,
3185 install ? ZEBRA_IPSET_CREATE :
3186 ZEBRA_IPSET_DESTROY,
3187 VRF_DEFAULT);
3188
3189 stream_putl(s, 1); /* send one pbr action */
3190
3191 bgp_encode_pbr_ipset_match(s, pbrim);
3192
3193 stream_putw_at(s, 0, stream_get_endp(s));
8a3f8f2e 3194 if ((zclient_send_message(zclient) != ZCLIENT_SEND_FAILURE) && install)
30d50e6d
PG		 3195 pbrim->install_in_progress = true;
3196}
3197
3198void bgp_send_pbr_ipset_entry_match(struct bgp_pbr_match_entry *pbrime,
3199 bool install)
3200{
3201 struct stream *s;
3202
3203 if (pbrime->install_in_progress)
3204 return;
f0936054 3205 if (BGP_DEBUG(zebra, ZEBRA))
15569c58
DA		 3206 zlog_debug("%s: name %s %d %d, ID %u", __func__,
3207 pbrime->backpointer->ipset_name, pbrime->unique,
3208 install, pbrime->unique);
30d50e6d
PG		 3209 s = zclient->obuf;
3210 stream_reset(s);
3211
3212 zclient_create_header(s,
3213 install ? ZEBRA_IPSET_ENTRY_ADD :
3214 ZEBRA_IPSET_ENTRY_DELETE,
3215 VRF_DEFAULT);
3216
3217 stream_putl(s, 1); /* send one pbr action */
3218
3219 bgp_encode_pbr_ipset_entry_match(s, pbrime);
3220
3221 stream_putw_at(s, 0, stream_get_endp(s));
8a3f8f2e 3222 if ((zclient_send_message(zclient) != ZCLIENT_SEND_FAILURE) && install)
30d50e6d
PG		 3223 pbrime->install_in_progress = true;
3224}
c16a0a62 3225
8f242187
PG		 3226static void bgp_encode_pbr_interface_list(struct bgp *bgp, struct stream *s,
3227 uint8_t family)
4762c213
PG		 3228{
3229 struct bgp_pbr_config *bgp_pbr_cfg = bgp->bgp_pbr_cfg;
3230 struct bgp_pbr_interface_head *head;
3231 struct bgp_pbr_interface *pbr_if;
3232 struct interface *ifp;
3233
3234 if (!bgp_pbr_cfg)
3235 return;
8f242187
PG		 3236 if (family == AF_INET)
3237 head = &(bgp_pbr_cfg->ifaces_by_name_ipv4);
3238 else
3239 head = &(bgp_pbr_cfg->ifaces_by_name_ipv6);
4762c213 3240 RB_FOREACH (pbr_if, bgp_pbr_interface_head, head) {
a36898e7 3241 ifp = if_lookup_by_name(pbr_if->name, bgp->vrf_id);
4762c213
PG		 3242 if (ifp)
3243 stream_putl(s, ifp->ifindex);
3244 }
3245}
3246
8f242187 3247static int bgp_pbr_get_ifnumber(struct bgp *bgp, uint8_t family)
4762c213
PG		 3248{
3249 struct bgp_pbr_config *bgp_pbr_cfg = bgp->bgp_pbr_cfg;
3250 struct bgp_pbr_interface_head *head;
3251 struct bgp_pbr_interface *pbr_if;
3252 int cnt = 0;
3253
3254 if (!bgp_pbr_cfg)
3255 return 0;
8f242187
PG		 3256 if (family == AF_INET)
3257 head = &(bgp_pbr_cfg->ifaces_by_name_ipv4);
3258 else
3259 head = &(bgp_pbr_cfg->ifaces_by_name_ipv6);
4762c213 3260 RB_FOREACH (pbr_if, bgp_pbr_interface_head, head) {
a36898e7 3261 if (if_lookup_by_name(pbr_if->name, bgp->vrf_id))
4762c213
PG		 3262 cnt++;
3263 }
3264 return cnt;
3265}
3266
c16a0a62
PG		 3267void bgp_send_pbr_iptable(struct bgp_pbr_action *pba,
3268 struct bgp_pbr_match *pbm,
3269 bool install)
3270{
3271 struct stream *s;
b5c40105 3272 int ret = 0;
4762c213 3273 int nb_interface;
c16a0a62
PG		 3274
3275 if (pbm->install_iptable_in_progress)
3276 return;
f0936054 3277 if (BGP_DEBUG(zebra, ZEBRA))
15569c58
DA		 3278 zlog_debug("%s: name %s type %d mark %d %d, ID %u", __func__,
3279 pbm->ipset_name, pbm->type, pba->fwmark, install,
88055124 3280 pbm->unique2);
c16a0a62
PG		 3281 s = zclient->obuf;
3282 stream_reset(s);
3283
3284 zclient_create_header(s,
3285 install ? ZEBRA_IPTABLE_ADD :
3286 ZEBRA_IPTABLE_DELETE,
3287 VRF_DEFAULT);
3288
3289 bgp_encode_pbr_iptable_match(s, pba, pbm);
8f242187 3290 nb_interface = bgp_pbr_get_ifnumber(pba->bgp, pbm->family);
4762c213
PG		 3291 stream_putl(s, nb_interface);
3292 if (nb_interface)
8f242187 3293 bgp_encode_pbr_interface_list(pba->bgp, s, pbm->family);
c16a0a62 3294 stream_putw_at(s, 0, stream_get_endp(s));
b5c40105
PG		 3295 ret = zclient_send_message(zclient);
3296 if (install) {
8a3f8f2e 3297 if (ret != ZCLIENT_SEND_FAILURE)
b5c40105
PG		 3298 pba->refcnt++;
3299 else
3300 pbm->install_iptable_in_progress = true;
a6b07429 3301 }
c16a0a62 3302}
f7df1907
PG		 3303
3304/* inject in table <table_id> a default route to:
3305 * - if nexthop IP is present : to this nexthop
3306 * - if vrf is different from local : to the matching VRF
3307 */
3308void bgp_zebra_announce_default(struct bgp *bgp, struct nexthop *nh,
3309 afi_t afi, uint32_t table_id, bool announce)
3310{
3311 struct zapi_nexthop *api_nh;
3312 struct zapi_route api;
3313 struct prefix p;
3314
f01e580f
PG		 3315 if (!nh || (nh->type != NEXTHOP_TYPE_IPV4
3316 && nh->type != NEXTHOP_TYPE_IPV6)
f7df1907
PG		 3317 || nh->vrf_id == VRF_UNKNOWN)
3318 return;
7afeaffa
PG		 3319
3320 /* in vrf-lite, no default route has to be announced
3321 * the table id of vrf is directly used to divert traffic
3322 */
3323 if (!vrf_is_backend_netns() && bgp->vrf_id != nh->vrf_id)
3324 return;
3325
f7df1907 3326 memset(&p, 0, sizeof(struct prefix));
f01e580f 3327 if (afi != AFI_IP && afi != AFI_IP6)
f7df1907 3328 return;
f01e580f 3329 p.family = afi2family(afi);
f7df1907
PG		 3330 memset(&api, 0, sizeof(api));
3331 api.vrf_id = bgp->vrf_id;
3332 api.type = ZEBRA_ROUTE_BGP;
3333 api.safi = SAFI_UNICAST;
3334 api.prefix = p;
3335 api.tableid = table_id;
3336 api.nexthop_num = 1;
3337 SET_FLAG(api.message, ZAPI_MESSAGE_TABLEID);
3338 SET_FLAG(api.message, ZAPI_MESSAGE_NEXTHOP);
3339 api_nh = &api.nexthops[0];
3340
38a8c751
DS		 3341 api.distance = ZEBRA_EBGP_DISTANCE_DEFAULT;
3342 SET_FLAG(api.message, ZAPI_MESSAGE_DISTANCE);
3343
f7df1907 3344 /* redirect IP */
f01e580f 3345 if (afi == AFI_IP && nh->gate.ipv4.s_addr != INADDR_ANY) {
f7df1907
PG		 3346 char buff[PREFIX_STRLEN];
3347
3348 api_nh->vrf_id = nh->vrf_id;
3349 api_nh->gate.ipv4 = nh->gate.ipv4;
3350 api_nh->type = NEXTHOP_TYPE_IPV4;
3351
3352 inet_ntop(AF_INET, &(nh->gate.ipv4), buff, INET_ADDRSTRLEN);
3353 if (BGP_DEBUG(zebra, ZEBRA))
f01e580f
PG		 3354 zlog_debug("BGP: %s default route to %s table %d (redirect IP)",
3355 announce ? "adding" : "withdrawing",
3356 buff, table_id);
3357 zclient_route_send(announce ? ZEBRA_ROUTE_ADD
3358 : ZEBRA_ROUTE_DELETE,
3359 zclient, &api);
3360 } else if (afi == AFI_IP6 &&
3361 memcmp(&nh->gate.ipv6,
3362 &in6addr_any, sizeof(struct in6_addr))) {
3363 char buff[PREFIX_STRLEN];
3364
3365 api_nh->vrf_id = nh->vrf_id;
3366 memcpy(&api_nh->gate.ipv6, &nh->gate.ipv6,
3367 sizeof(struct in6_addr));
3368 api_nh->type = NEXTHOP_TYPE_IPV6;
3369
3370 inet_ntop(AF_INET6, &(nh->gate.ipv6), buff, INET_ADDRSTRLEN);
3371 if (BGP_DEBUG(zebra, ZEBRA))
3372 zlog_debug("BGP: %s default route to %s table %d (redirect IP)",
d887503c 3373 announce ? "adding" : "withdrawing",
f7df1907
PG		 3374 buff, table_id);
3375 zclient_route_send(announce ? ZEBRA_ROUTE_ADD
3376 : ZEBRA_ROUTE_DELETE,
3377 zclient, &api);
3378 } else if (nh->vrf_id != bgp->vrf_id) {
3379 struct vrf *vrf;
eb4244f8 3380 struct interface *ifp;
f7df1907 3381
eb4244f8 3382 vrf = vrf_lookup_by_id(nh->vrf_id);
f7df1907
PG		 3383 if (!vrf)
3384 return;
eb4244f8
PG		 3385 /* create default route with interface <VRF>
3386 * with nexthop-vrf <VRF>
f7df1907 3387 */
eb4244f8
PG		 3388 ifp = if_lookup_by_name_all_vrf(vrf->name);
3389 if (!ifp)
3390 return;
3391 api_nh->vrf_id = nh->vrf_id;
3392 api_nh->type = NEXTHOP_TYPE_IFINDEX;
3393 api_nh->ifindex = ifp->ifindex;
3394 if (BGP_DEBUG(zebra, ZEBRA))
d887503c
PG		 3395 zlog_info("BGP: %s default route to %s table %d (redirect VRF)",
3396 announce ? "adding" : "withdrawing",
eb4244f8
PG		 3397 vrf->name, table_id);
3398 zclient_route_send(announce ? ZEBRA_ROUTE_ADD
3399 : ZEBRA_ROUTE_DELETE,
3400 zclient, &api);
f7df1907
PG		 3401 return;
3402 }
3403}
85ef4179 3404
3405/* Send capabilities to RIB */
3406int bgp_zebra_send_capabilities(struct bgp *bgp, bool disable)
3407{
3408 struct zapi_cap api;
3409 int ret = BGP_GR_SUCCESS;
3410
3411 if (zclient == NULL) {
3412 if (BGP_DEBUG(zebra, ZEBRA))
3413 zlog_debug("zclient invalid");
3414 return BGP_GR_FAILURE;
3415 }
3416
3417 /* Check if the client is connected */
3418 if ((zclient->sock < 0) || (zclient->t_connect)) {
3419 if (BGP_DEBUG(zebra, ZEBRA))
3420 zlog_debug("client not connected");
3421 return BGP_GR_FAILURE;
3422 }
3423
3424 /* Check if capability is already sent. If the flag force is set
3425 * send the capability since this can be initial bgp configuration
3426 */
3427 memset(&api, 0, sizeof(struct zapi_cap));
3428 if (disable) {
3429 api.cap = ZEBRA_CLIENT_GR_DISABLE;
3430 api.vrf_id = bgp->vrf_id;
3431 } else {
3432 api.cap = ZEBRA_CLIENT_GR_CAPABILITIES;
3433 api.stale_removal_time = bgp->rib_stale_time;
3434 api.vrf_id = bgp->vrf_id;
3435 }
3436
36235319 3437 if (zclient_capabilities_send(ZEBRA_CLIENT_CAPABILITIES, zclient, &api)
7cfdb485 3438 == ZCLIENT_SEND_FAILURE) {
2ba1fe69 3439 zlog_err("error sending capability");
85ef4179 3440 ret = BGP_GR_FAILURE;
3441 } else {
3442 if (disable)
3443 bgp->present_zebra_gr_state = ZEBRA_GR_DISABLE;
3444 else
3445 bgp->present_zebra_gr_state = ZEBRA_GR_ENABLE;
3446
3447 if (BGP_DEBUG(zebra, ZEBRA))
3448 zlog_debug("send capabilty success");
3449 ret = BGP_GR_SUCCESS;
3450 }
3451 return ret;
3452}
3453
3454/* Send route update pesding or completed status to RIB for the
3455 * specific AFI, SAFI
3456 */
3457int bgp_zebra_update(afi_t afi, safi_t safi, vrf_id_t vrf_id, int type)
3458{
2ba1fe69 3459 struct zapi_cap api = {0};
85ef4179 3460
3461 if (zclient == NULL) {
3462 if (BGP_DEBUG(zebra, ZEBRA))
2ba1fe69 3463 zlog_debug("zclient == NULL, invalid");
85ef4179 3464 return BGP_GR_FAILURE;
3465 }
3466
3467 /* Check if the client is connected */
3468 if ((zclient->sock < 0) || (zclient->t_connect)) {
3469 if (BGP_DEBUG(zebra, ZEBRA))
3470 zlog_debug("client not connected");
3471 return BGP_GR_FAILURE;
3472 }
3473
85ef4179 3474 api.afi = afi;
3475 api.safi = safi;
3476 api.vrf_id = vrf_id;
3477 api.cap = type;
3478
36235319 3479 if (zclient_capabilities_send(ZEBRA_CLIENT_CAPABILITIES, zclient, &api)
7cfdb485 3480 == ZCLIENT_SEND_FAILURE) {
85ef4179 3481 if (BGP_DEBUG(zebra, ZEBRA))
3482 zlog_debug("error sending capability");
3483 return BGP_GR_FAILURE;
3484 }
3485 return BGP_GR_SUCCESS;
3486}
3487
3488
85ef4179 3489/* Send RIB stale timer update */
3490int bgp_zebra_stale_timer_update(struct bgp *bgp)
3491{
3492 struct zapi_cap api;
3493
3494 if (zclient == NULL) {
3495 if (BGP_DEBUG(zebra, ZEBRA))
3496 zlog_debug("zclient invalid");
3497 return BGP_GR_FAILURE;
3498 }
3499
3500 /* Check if the client is connected */
3501 if ((zclient->sock < 0) || (zclient->t_connect)) {
3502 if (BGP_DEBUG(zebra, ZEBRA))
3503 zlog_debug("client not connected");
3504 return BGP_GR_FAILURE;
3505 }
3506
3507 memset(&api, 0, sizeof(struct zapi_cap));
3508 api.cap = ZEBRA_CLIENT_RIB_STALE_TIME;
3509 api.stale_removal_time = bgp->rib_stale_time;
3510 api.vrf_id = bgp->vrf_id;
36235319 3511 if (zclient_capabilities_send(ZEBRA_CLIENT_CAPABILITIES, zclient, &api)
7cfdb485 3512 == ZCLIENT_SEND_FAILURE) {
85ef4179 3513 if (BGP_DEBUG(zebra, ZEBRA))
3514 zlog_debug("error sending capability");
3515 return BGP_GR_FAILURE;
3516 }
3517 if (BGP_DEBUG(zebra, ZEBRA))
3518 zlog_debug("send capabilty success");
3519 return BGP_GR_SUCCESS;
3520}
a0281b2e
HS		 3521
3522int bgp_zebra_srv6_manager_get_locator_chunk(const char *name)
3523{
3524 return srv6_manager_get_locator_chunk(zclient, name);
3525}
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