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bf094f69 1/*
d8647095 2 * Zebra API message creation & consumption.
bf094f69
QY		 3 * Portions:
4 * Copyright (C) 1997-1999 Kunihiro Ishiguro
5 * Copyright (C) 2015-2018 Cumulus Networks, Inc.
6 * et al.
7 *
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of the GNU General Public License as published by the Free
10 * Software Foundation; either version 2 of the License, or (at your option)
11 * any later version.
12 *
13 * This program is distributed in the hope that it will be useful, but WITHOUT
14 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
15 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
16 * more details.
17 *
18 * You should have received a copy of the GNU General Public License along
19 * with this program; see the file COPYING; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
21 */
22
23#include <zebra.h>
24#include <libgen.h>
25
26#include "lib/prefix.h"
bf094f69
QY		 27#include "lib/stream.h"
28#include "lib/memory.h"
29#include "lib/table.h"
30#include "lib/network.h"
bf094f69
QY		 31#include "lib/log.h"
32#include "lib/zclient.h"
33#include "lib/privs.h"
bf094f69
QY		 34#include "lib/nexthop.h"
35#include "lib/vrf.h"
36#include "lib/libfrr.h"
5e7939a5 37#include "lib/lib_errors.h"
bf094f69 38
161e9ab7 39#include "zebra/zebra_router.h"
bf094f69 40#include "zebra/rib.h"
bf094f69
QY		 41#include "zebra/zebra_ns.h"
42#include "zebra/zebra_vrf.h"
43#include "zebra/router-id.h"
44#include "zebra/redistribute.h"
45#include "zebra/debug.h"
46#include "zebra/zebra_rnh.h"
bf094f69
QY		 47#include "zebra/interface.h"
48#include "zebra/zebra_ptm.h"
49#include "zebra/rtadv.h"
50#include "zebra/zebra_mpls.h"
51#include "zebra/zebra_mroute.h"
bf094f69 52#include "zebra/zebra_vxlan.h"
ce5160c0 53#include "zebra/zebra_evpn_mh.h"
bf094f69
QY		 54#include "zebra/rt.h"
55#include "zebra/zebra_pbr.h"
56#include "zebra/table_manager.h"
57#include "zebra/zapi_msg.h"
364fed6b 58#include "zebra/zebra_errors.h"
02c0866d 59#include "zebra/zebra_mlag.h"
54bea4e5 60#include "zebra/connected.h"
79b3664a 61#include "zebra/zebra_opaque.h"
31f937fb 62#include "zebra/zebra_srte.h"
6e68a084 63#include "zebra/zebra_srv6.h"
bf094f69 64
b86c1f4f 65DEFINE_MTYPE_STATIC(ZEBRA, RE_OPAQUE, "Route Opaque Data");
224ccf29 66
5898ce6f
MS		 67static int zapi_nhg_decode(struct stream *s, int cmd, struct zapi_nhg *api_nhg);
68
bf094f69
QY		 69/* Encoding helpers -------------------------------------------------------- */
70
71static void zserv_encode_interface(struct stream *s, struct interface *ifp)
72{
73 /* Interface information. */
53e60e5c 74 struct zebra_if *zif = ifp->info;
19c38250 75
bf094f69
QY		 76 stream_put(s, ifp->name, INTERFACE_NAMSIZ);
77 stream_putl(s, ifp->ifindex);
78 stream_putc(s, ifp->status);
79 stream_putq(s, ifp->flags);
80 stream_putc(s, ifp->ptm_enable);
81 stream_putc(s, ifp->ptm_status);
82 stream_putl(s, ifp->metric);
83 stream_putl(s, ifp->speed);
84 stream_putl(s, ifp->mtu);
85 stream_putl(s, ifp->mtu6);
86 stream_putl(s, ifp->bandwidth);
53e60e5c 87 stream_putl(s, zif->link_ifindex);
bf094f69
QY		 88 stream_putl(s, ifp->ll_type);
89 stream_putl(s, ifp->hw_addr_len);
90 if (ifp->hw_addr_len)
91 stream_put(s, ifp->hw_addr, ifp->hw_addr_len);
92
93 /* Then, Traffic Engineering parameters if any */
94 if (HAS_LINK_PARAMS(ifp) && IS_LINK_PARAMS_SET(ifp->link_params)) {
95 stream_putc(s, 1);
96 zebra_interface_link_params_write(s, ifp);
97 } else
98 stream_putc(s, 0);
99
100 /* Write packet size. */
101 stream_putw_at(s, 0, stream_get_endp(s));
102}
103
104static void zserv_encode_vrf(struct stream *s, struct zebra_vrf *zvrf)
105{
106 struct vrf_data data;
107 const char *netns_name = zvrf_ns_name(zvrf);
108
a013777a 109 memset(&data, 0, sizeof(data));
bf094f69
QY		 110 data.l.table_id = zvrf->table_id;
111
112 if (netns_name)
113 strlcpy(data.l.netns_name, basename((char *)netns_name),
114 NS_NAMSIZ);
115 else
116 memset(data.l.netns_name, 0, NS_NAMSIZ);
117 /* Pass the tableid and the netns NAME */
118 stream_put(s, &data, sizeof(struct vrf_data));
119 /* Interface information. */
120 stream_put(s, zvrf_name(zvrf), VRF_NAMSIZ);
121 /* Write packet size. */
122 stream_putw_at(s, 0, stream_get_endp(s));
123}
124
125static int zserv_encode_nexthop(struct stream *s, struct nexthop *nexthop)
126{
a756969d 127 stream_putl(s, nexthop->vrf_id);
bf094f69
QY		 128 stream_putc(s, nexthop->type);
129 switch (nexthop->type) {
130 case NEXTHOP_TYPE_IPV4:
131 case NEXTHOP_TYPE_IPV4_IFINDEX:
132 stream_put_in_addr(s, &nexthop->gate.ipv4);
133 stream_putl(s, nexthop->ifindex);
134 break;
135 case NEXTHOP_TYPE_IPV6:
136 stream_put(s, &nexthop->gate.ipv6, 16);
137 break;
138 case NEXTHOP_TYPE_IPV6_IFINDEX:
139 stream_put(s, &nexthop->gate.ipv6, 16);
140 stream_putl(s, nexthop->ifindex);
141 break;
142 case NEXTHOP_TYPE_IFINDEX:
143 stream_putl(s, nexthop->ifindex);
144 break;
145 default:
146 /* do nothing */
147 break;
148 }
149 return 1;
150}
151
9ab0b2a3
SW		 152/*
153 * Zebra error addition adds error type.
154 *
155 *
156 * 0 1
157 * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6
158 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
159 * | enum zebra_error_types |
160 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
161 *
162 */
163static void zserv_encode_error(struct stream *s, enum zebra_error_types error)
164{
165 stream_put(s, &error, sizeof(error));
166
167 /* Write packet size. */
168 stream_putw_at(s, 0, stream_get_endp(s));
169}
170
bf094f69
QY		 171/* Send handlers ----------------------------------------------------------- */
172
173/* Interface is added. Send ZEBRA_INTERFACE_ADD to client. */
174/*
175 * This function is called in the following situations:
176 * - in response to a 3-byte ZEBRA_INTERFACE_ADD request
177 * from the client.
178 * - at startup, when zebra figures out the available interfaces
179 * - when an interface is added (where support for
180 * RTM_IFANNOUNCE or AF_NETLINK sockets is available), or when
181 * an interface is marked IFF_UP (i.e., an RTM_IFINFO message is
182 * received)
183 */
184int zsend_interface_add(struct zserv *client, struct interface *ifp)
185{
186 struct stream *s = stream_new(ZEBRA_MAX_PACKET_SIZ);
187
096f7609 188 zclient_create_header(s, ZEBRA_INTERFACE_ADD, ifp->vrf->vrf_id);
bf094f69
QY		 189 zserv_encode_interface(s, ifp);
190
191 client->ifadd_cnt++;
21ccc0cf 192 return zserv_send_message(client, s);
bf094f69
QY		 193}
194
195/* Interface deletion from zebra daemon. */
196int zsend_interface_delete(struct zserv *client, struct interface *ifp)
197{
198 struct stream *s = stream_new(ZEBRA_MAX_PACKET_SIZ);
199
096f7609 200 zclient_create_header(s, ZEBRA_INTERFACE_DELETE, ifp->vrf->vrf_id);
bf094f69
QY		 201 zserv_encode_interface(s, ifp);
202
203 client->ifdel_cnt++;
21ccc0cf 204 return zserv_send_message(client, s);
bf094f69
QY		 205}
206
207int zsend_vrf_add(struct zserv *client, struct zebra_vrf *zvrf)
208{
209 struct stream *s = stream_new(ZEBRA_MAX_PACKET_SIZ);
210
211 zclient_create_header(s, ZEBRA_VRF_ADD, zvrf_id(zvrf));
212 zserv_encode_vrf(s, zvrf);
213
214 client->vrfadd_cnt++;
21ccc0cf 215 return zserv_send_message(client, s);
bf094f69
QY		 216}
217
218/* VRF deletion from zebra daemon. */
219int zsend_vrf_delete(struct zserv *client, struct zebra_vrf *zvrf)
220
221{
222 struct stream *s = stream_new(ZEBRA_MAX_PACKET_SIZ);
223
224 zclient_create_header(s, ZEBRA_VRF_DELETE, zvrf_id(zvrf));
225 zserv_encode_vrf(s, zvrf);
226
227 client->vrfdel_cnt++;
21ccc0cf 228 return zserv_send_message(client, s);
bf094f69
QY		 229}
230
231int zsend_interface_link_params(struct zserv *client, struct interface *ifp)
232{
233 struct stream *s = stream_new(ZEBRA_MAX_PACKET_SIZ);
234
bf094f69
QY		 235 if (!ifp->link_params) {
236 stream_free(s);
237 return 0;
238 }
239
096f7609 240 zclient_create_header(s, ZEBRA_INTERFACE_LINK_PARAMS, ifp->vrf->vrf_id);
bf094f69
QY		 241
242 /* Add Interface Index */
243 stream_putl(s, ifp->ifindex);
244
245 /* Then TE Link Parameters */
246 if (zebra_interface_link_params_write(s, ifp) == 0) {
247 stream_free(s);
248 return 0;
249 }
250
251 /* Write packet size. */
252 stream_putw_at(s, 0, stream_get_endp(s));
253
21ccc0cf 254 return zserv_send_message(client, s);
bf094f69
QY		 255}
256
257/* Interface address is added/deleted. Send ZEBRA_INTERFACE_ADDRESS_ADD or
258 * ZEBRA_INTERFACE_ADDRESS_DELETE to the client.
259 *
260 * A ZEBRA_INTERFACE_ADDRESS_ADD is sent in the following situations:
261 * - in response to a 3-byte ZEBRA_INTERFACE_ADD request
262 * from the client, after the ZEBRA_INTERFACE_ADD has been
263 * sent from zebra to the client
264 * - redistribute new address info to all clients in the following situations
265 * - at startup, when zebra figures out the available interfaces
266 * - when an interface is added (where support for
267 * RTM_IFANNOUNCE or AF_NETLINK sockets is available), or when
268 * an interface is marked IFF_UP (i.e., an RTM_IFINFO message is
269 * received)
b1bd1015 270 * - for the vty commands "ip address A.B.C.D/M [<label LINE>]"
bf094f69
QY		 271 * and "no bandwidth <1-10000000>", "ipv6 address X:X::X:X/M"
272 * - when an RTM_NEWADDR message is received from the kernel,
273 *
274 * The call tree that triggers ZEBRA_INTERFACE_ADDRESS_DELETE:
275 *
276 * zsend_interface_address(DELETE)
277 * ^
278 * |
279 * zebra_interface_address_delete_update
280 * ^ ^ ^
281 * | | if_delete_update
282 * | |
283 * ip_address_uninstall connected_delete_ipv4
284 * [ipv6_addresss_uninstall] [connected_delete_ipv6]
285 * ^ ^
286 * | |
287 * | RTM_NEWADDR on routing/netlink socket
288 * |
289 * vty commands:
290 * "no ip address A.B.C.D/M [label LINE]"
b1bd1015 291 * "no ip address A.B.C.D/M"
bf094f69
QY		 292 * ["no ipv6 address X:X::X:X/M"]
293 *
294 */
295int zsend_interface_address(int cmd, struct zserv *client,
296 struct interface *ifp, struct connected *ifc)
297{
298 int blen;
299 struct prefix *p;
300 struct stream *s = stream_new(ZEBRA_MAX_PACKET_SIZ);
301
096f7609 302 zclient_create_header(s, cmd, ifp->vrf->vrf_id);
bf094f69
QY		 303 stream_putl(s, ifp->ifindex);
304
305 /* Interface address flag. */
306 stream_putc(s, ifc->flags);
307
308 /* Prefix information. */
309 p = ifc->address;
310 stream_putc(s, p->family);
311 blen = prefix_blen(p);
312 stream_put(s, &p->u.prefix, blen);
313
314 /*
315 * XXX gnu version does not send prefixlen for
316 * ZEBRA_INTERFACE_ADDRESS_DELETE
317 * but zebra_interface_address_delete_read() in the gnu version
318 * expects to find it
319 */
320 stream_putc(s, p->prefixlen);
321
322 /* Destination. */
323 p = ifc->destination;
324 if (p)
325 stream_put(s, &p->u.prefix, blen);
326 else
327 stream_put(s, NULL, blen);
328
329 /* Write packet size. */
330 stream_putw_at(s, 0, stream_get_endp(s));
331
332 client->connected_rt_add_cnt++;
21ccc0cf 333 return zserv_send_message(client, s);
bf094f69
QY		 334}
335
336static int zsend_interface_nbr_address(int cmd, struct zserv *client,
337 struct interface *ifp,
338 struct nbr_connected *ifc)
339{
340 int blen;
341 struct stream *s = stream_new(ZEBRA_MAX_PACKET_SIZ);
342 struct prefix *p;
343
096f7609 344 zclient_create_header(s, cmd, ifp->vrf->vrf_id);
bf094f69
QY		 345 stream_putl(s, ifp->ifindex);
346
347 /* Prefix information. */
348 p = ifc->address;
349 stream_putc(s, p->family);
350 blen = prefix_blen(p);
351 stream_put(s, &p->u.prefix, blen);
352
353 /*
354 * XXX gnu version does not send prefixlen for
355 * ZEBRA_INTERFACE_ADDRESS_DELETE
356 * but zebra_interface_address_delete_read() in the gnu version
357 * expects to find it
358 */
359 stream_putc(s, p->prefixlen);
360
361 /* Write packet size. */
362 stream_putw_at(s, 0, stream_get_endp(s));
363
21ccc0cf 364 return zserv_send_message(client, s);
bf094f69
QY		 365}
366
367/* Interface address addition. */
368static void zebra_interface_nbr_address_add_update(struct interface *ifp,
369 struct nbr_connected *ifc)
370{
371 struct listnode *node, *nnode;
372 struct zserv *client;
373 struct prefix *p;
374
375 if (IS_ZEBRA_DEBUG_EVENT) {
376 char buf[INET6_ADDRSTRLEN];
377
378 p = ifc->address;
379 zlog_debug(
380 "MESSAGE: ZEBRA_INTERFACE_NBR_ADDRESS_ADD %s/%d on %s",
381 inet_ntop(p->family, &p->u.prefix, buf,
382 INET6_ADDRSTRLEN),
383 p->prefixlen, ifc->ifp->name);
384 }
385
17da84a4
KS		 386 for (ALL_LIST_ELEMENTS(zrouter.client_list, node, nnode, client)) {
387 /* Do not send unsolicited messages to synchronous clients. */
388 if (client->synchronous)
389 continue;
390
bf094f69
QY		 391 zsend_interface_nbr_address(ZEBRA_INTERFACE_NBR_ADDRESS_ADD,
392 client, ifp, ifc);
17da84a4 393 }
bf094f69
QY		 394}
395
396/* Interface address deletion. */
397static void zebra_interface_nbr_address_delete_update(struct interface *ifp,
398 struct nbr_connected *ifc)
399{
400 struct listnode *node, *nnode;
401 struct zserv *client;
402 struct prefix *p;
403
404 if (IS_ZEBRA_DEBUG_EVENT) {
405 char buf[INET6_ADDRSTRLEN];
406
407 p = ifc->address;
408 zlog_debug(
409 "MESSAGE: ZEBRA_INTERFACE_NBR_ADDRESS_DELETE %s/%d on %s",
410 inet_ntop(p->family, &p->u.prefix, buf,
411 INET6_ADDRSTRLEN),
412 p->prefixlen, ifc->ifp->name);
413 }
414
17da84a4
KS		 415 for (ALL_LIST_ELEMENTS(zrouter.client_list, node, nnode, client)) {
416 /* Do not send unsolicited messages to synchronous clients. */
417 if (client->synchronous)
418 continue;
419
bf094f69
QY		 420 zsend_interface_nbr_address(ZEBRA_INTERFACE_NBR_ADDRESS_DELETE,
421 client, ifp, ifc);
17da84a4 422 }
bf094f69
QY		 423}
424
425/* Send addresses on interface to client */
426int zsend_interface_addresses(struct zserv *client, struct interface *ifp)
427{
428 struct listnode *cnode, *cnnode;
429 struct connected *c;
430 struct nbr_connected *nc;
431
432 /* Send interface addresses. */
433 for (ALL_LIST_ELEMENTS(ifp->connected, cnode, cnnode, c)) {
434 if (!CHECK_FLAG(c->conf, ZEBRA_IFC_REAL))
435 continue;
436
437 if (zsend_interface_address(ZEBRA_INTERFACE_ADDRESS_ADD, client,
438 ifp, c)
439 < 0)
440 return -1;
441 }
442
443 /* Send interface neighbors. */
444 for (ALL_LIST_ELEMENTS(ifp->nbr_connected, cnode, cnnode, nc)) {
445 if (zsend_interface_nbr_address(ZEBRA_INTERFACE_NBR_ADDRESS_ADD,
446 client, ifp, nc)
447 < 0)
448 return -1;
449 }
450
451 return 0;
452}
453
454/* Notify client about interface moving from one VRF to another.
455 * Whether client is interested in old and new VRF is checked by caller.
456 */
457int zsend_interface_vrf_update(struct zserv *client, struct interface *ifp,
458 vrf_id_t vrf_id)
459{
460 struct stream *s = stream_new(ZEBRA_MAX_PACKET_SIZ);
461
096f7609 462 zclient_create_header(s, ZEBRA_INTERFACE_VRF_UPDATE, ifp->vrf->vrf_id);
bf094f69 463
91d227b7
RW		 464 /* Fill in the name of the interface and its new VRF (id) */
465 stream_put(s, ifp->name, INTERFACE_NAMSIZ);
bf094f69
QY		 466 stream_putl(s, vrf_id);
467
468 /* Write packet size. */
469 stream_putw_at(s, 0, stream_get_endp(s));
470
471 client->if_vrfchg_cnt++;
21ccc0cf 472 return zserv_send_message(client, s);
bf094f69
QY		 473}
474
475/* Add new nbr connected IPv6 address */
476void nbr_connected_add_ipv6(struct interface *ifp, struct in6_addr *address)
477{
478 struct nbr_connected *ifc;
479 struct prefix p;
480
481 p.family = AF_INET6;
a85297a7 482 IPV6_ADDR_COPY(&p.u.prefix6, address);
f4d81e55 483 p.prefixlen = IPV6_MAX_BITLEN;
bf094f69 484
8b1766b1
QY		 485 ifc = listnode_head(ifp->nbr_connected);
486 if (!ifc) {
bf094f69
QY		 487 /* new addition */
488 ifc = nbr_connected_new();
489 ifc->address = prefix_new();
490 ifc->ifp = ifp;
491 listnode_add(ifp->nbr_connected, ifc);
492 }
493
494 prefix_copy(ifc->address, &p);
495
496 zebra_interface_nbr_address_add_update(ifp, ifc);
497
498 if_nbr_ipv6ll_to_ipv4ll_neigh_update(ifp, address, 1);
499}
500
501void nbr_connected_delete_ipv6(struct interface *ifp, struct in6_addr *address)
502{
503 struct nbr_connected *ifc;
504 struct prefix p;
505
506 p.family = AF_INET6;
a85297a7 507 IPV6_ADDR_COPY(&p.u.prefix6, address);
f4d81e55 508 p.prefixlen = IPV6_MAX_BITLEN;
bf094f69
QY		 509
510 ifc = nbr_connected_check(ifp, &p);
511 if (!ifc)
512 return;
513
514 listnode_delete(ifp->nbr_connected, ifc);
515
516 zebra_interface_nbr_address_delete_update(ifp, ifc);
517
518 if_nbr_ipv6ll_to_ipv4ll_neigh_update(ifp, address, 0);
519
520 nbr_connected_free(ifc);
521}
522
523/*
524 * The cmd passed to zsend_interface_update may be ZEBRA_INTERFACE_UP or
525 * ZEBRA_INTERFACE_DOWN.
526 *
527 * The ZEBRA_INTERFACE_UP message is sent from the zebra server to
528 * the clients in one of 2 situations:
529 * - an if_up is detected e.g., as a result of an RTM_IFINFO message
530 * - a vty command modifying the bandwidth of an interface is received.
531 * The ZEBRA_INTERFACE_DOWN message is sent when an if_down is detected.
532 */
533int zsend_interface_update(int cmd, struct zserv *client, struct interface *ifp)
534{
535 struct stream *s = stream_new(ZEBRA_MAX_PACKET_SIZ);
536
096f7609 537 zclient_create_header(s, cmd, ifp->vrf->vrf_id);
bf094f69
QY		 538 zserv_encode_interface(s, ifp);
539
540 if (cmd == ZEBRA_INTERFACE_UP)
541 client->ifup_cnt++;
542 else
543 client->ifdown_cnt++;
544
21ccc0cf 545 return zserv_send_message(client, s);
bf094f69
QY		 546}
547
86391e56 548int zsend_redistribute_route(int cmd, struct zserv *client,
84faa420 549 const struct route_node *rn,
40f321c0 550 const struct route_entry *re)
bf094f69
QY		 551{
552 struct zapi_route api;
553 struct zapi_nexthop *api_nh;
554 struct nexthop *nexthop;
84faa420 555 const struct prefix *p, *src_p;
9a0d4dd3 556 uint8_t count = 0;
34fa0870 557 afi_t afi;
f3f45626
DS		 558 size_t stream_size =
559 MAX(ZEBRA_MAX_PACKET_SIZ, sizeof(struct zapi_route));
bf094f69 560
84faa420 561 srcdest_rnode_prefixes(rn, &p, &src_p);
bf094f69
QY		 562 memset(&api, 0, sizeof(api));
563 api.vrf_id = re->vrf_id;
564 api.type = re->type;
e4081c0e 565 api.safi = SAFI_UNICAST;
bf094f69
QY		 566 api.instance = re->instance;
567 api.flags = re->flags;
568
34fa0870
DS		 569 afi = family2afi(p->family);
570 switch (afi) {
571 case AFI_IP:
572 if (cmd == ZEBRA_REDISTRIBUTE_ROUTE_ADD)
573 client->redist_v4_add_cnt++;
574 else
575 client->redist_v4_del_cnt++;
576 break;
577 case AFI_IP6:
578 if (cmd == ZEBRA_REDISTRIBUTE_ROUTE_ADD)
579 client->redist_v6_add_cnt++;
580 else
581 client->redist_v6_del_cnt++;
582 break;
583 default:
584 break;
585 }
586
bf094f69
QY		 587 /* Prefix. */
588 api.prefix = *p;
589 if (src_p) {
590 SET_FLAG(api.message, ZAPI_MESSAGE_SRCPFX);
591 memcpy(&api.src_prefix, src_p, sizeof(api.src_prefix));
592 }
593
c415d895 594 for (nexthop = re->nhe->nhg.nexthop;
0eb97b86 595 nexthop; nexthop = nexthop->next) {
bf094f69
QY		 596 if (!CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE))
597 continue;
598
599 api_nh = &api.nexthops[count];
600 api_nh->vrf_id = nexthop->vrf_id;
601 api_nh->type = nexthop->type;
bd054c1a 602 api_nh->weight = nexthop->weight;
bf094f69
QY		 603 switch (nexthop->type) {
604 case NEXTHOP_TYPE_BLACKHOLE:
605 api_nh->bh_type = nexthop->bh_type;
606 break;
607 case NEXTHOP_TYPE_IPV4:
bf094f69
QY		 608 case NEXTHOP_TYPE_IPV4_IFINDEX:
609 api_nh->gate.ipv4 = nexthop->gate.ipv4;
610 api_nh->ifindex = nexthop->ifindex;
611 break;
612 case NEXTHOP_TYPE_IFINDEX:
613 api_nh->ifindex = nexthop->ifindex;
614 break;
615 case NEXTHOP_TYPE_IPV6:
bf094f69
QY		 616 case NEXTHOP_TYPE_IPV6_IFINDEX:
617 api_nh->gate.ipv6 = nexthop->gate.ipv6;
618 api_nh->ifindex = nexthop->ifindex;
619 }
620 count++;
621 }
622
9a0d4dd3
DS		 623 /* Nexthops. */
624 if (count) {
625 SET_FLAG(api.message, ZAPI_MESSAGE_NEXTHOP);
626 api.nexthop_num = count;
627 }
628
bf094f69
QY		 629 /* Attributes. */
630 SET_FLAG(api.message, ZAPI_MESSAGE_DISTANCE);
631 api.distance = re->distance;
632 SET_FLAG(api.message, ZAPI_MESSAGE_METRIC);
633 api.metric = re->metric;
634 if (re->tag) {
635 SET_FLAG(api.message, ZAPI_MESSAGE_TAG);
636 api.tag = re->tag;
637 }
638 SET_FLAG(api.message, ZAPI_MESSAGE_MTU);
639 api.mtu = re->mtu;
640
f3f45626 641 struct stream *s = stream_new(stream_size);
bf094f69
QY		 642
643 /* Encode route and send. */
644 if (zapi_route_encode(cmd, s, &api) < 0) {
645 stream_free(s);
646 return -1;
647 }
648
2dbe669b
DA		 649 if (IS_ZEBRA_DEBUG_SEND)
650 zlog_debug("%s: %s to client %s: type %s, vrf_id %d, p %pFX",
bf094f69
QY		 651 __func__, zserv_command_string(cmd),
652 zebra_route_string(client->proto),
653 zebra_route_string(api.type), api.vrf_id,
2dbe669b 654 &api.prefix);
21ccc0cf 655 return zserv_send_message(client, s);
bf094f69
QY		 656}
657
658/*
659 * Modified version of zsend_ipv4_nexthop_lookup(): Query unicast rib if
660 * nexthop is not found on mrib. Returns both route metric and protocol
661 * distance.
34ee41c6
DL		 662 *
663 * *XXX* this ZAPI call is slated to be removed at some point in the future
664 * since MRIB support in PIM is hopelessly broken in its interactions with NHT.
665 * The plan is to make pimd use NHT to receive URIB and MRIB in parallel and
666 * make the decision there, which will obsolete this ZAPI op.
667 * (Otherwise we would need to implement sending NHT updates for the result of
668 * this "URIB-MRIB-combined" table, but we only decide that here on the fly,
669 * so it'd be rather complex to do NHT for.)
bf094f69 670 */
34ee41c6
DL		 671static int zsend_nexthop_lookup_mrib(struct zserv *client, struct ipaddr *addr,
672 struct route_entry *re,
673 struct zebra_vrf *zvrf)
bf094f69
QY		 674{
675 struct stream *s;
676 unsigned long nump;
677 uint8_t num;
678 struct nexthop *nexthop;
679
680 /* Get output stream. */
681 s = stream_new(ZEBRA_MAX_PACKET_SIZ);
682 stream_reset(s);
683
684 /* Fill in result. */
34ee41c6
DL		 685 zclient_create_header(s, ZEBRA_NEXTHOP_LOOKUP_MRIB, zvrf_id(zvrf));
686 stream_put_ipaddr(s, addr);
bf094f69
QY		 687
688 if (re) {
b59839af
DS		 689 struct nexthop_group *nhg;
690
bf094f69
QY		 691 stream_putc(s, re->distance);
692 stream_putl(s, re->metric);
693 num = 0;
8b1766b1
QY		 694 /* remember position for nexthop_num */
695 nump = stream_get_endp(s);
696 /* reserve room for nexthop_num */
697 stream_putc(s, 0);
b59839af
DS		 698 nhg = rib_get_fib_nhg(re);
699 for (ALL_NEXTHOPS_PTR(nhg, nexthop)) {
700 if (rnh_nexthop_valid(re, nexthop))
bf094f69 701 num += zserv_encode_nexthop(s, nexthop);
b59839af 702 }
bf094f69 703
8b1766b1
QY		 704 /* store nexthop_num */
705 stream_putc_at(s, nump, num);
bf094f69
QY		 706 } else {
707 stream_putc(s, 0); /* distance */
708 stream_putl(s, 0); /* metric */
709 stream_putc(s, 0); /* nexthop_num */
710 }
711
712 stream_putw_at(s, 0, stream_get_endp(s));
713
21ccc0cf 714 return zserv_send_message(client, s);
bf094f69
QY		 715}
716
ee94437e
MS		 717int zsend_nhg_notify(uint16_t type, uint16_t instance, uint32_t session_id,
718 uint32_t id, enum zapi_nhg_notify_owner note)
2f35a820
DS		 719{
720 struct zserv *client;
721 struct stream *s;
722
ee94437e 723 client = zserv_find_client_session(type, instance, session_id);
2f35a820
DS		 724 if (!client) {
725 if (IS_ZEBRA_DEBUG_PACKET) {
726 zlog_debug("Not Notifying Owner: %u(%u) about %u(%d)",
727 type, instance, id, note);
728 }
729 return 0;
730 }
731
ee94437e 732 if (IS_ZEBRA_DEBUG_SEND)
04bec7b2
MS		 733 zlog_debug("%s: type %d, id %d, note %s",
734 __func__, type, id, zapi_nhg_notify_owner2str(note));
ee94437e 735
2f35a820
DS		 736 s = stream_new(ZEBRA_MAX_PACKET_SIZ);
737 stream_reset(s);
738
739 zclient_create_header(s, ZEBRA_NHG_NOTIFY_OWNER, VRF_DEFAULT);
740
2f35a820 741 stream_put(s, &note, sizeof(note));
2c7819b9 742 stream_putl(s, id);
2f35a820
DS		 743
744 stream_putw_at(s, 0, stream_get_endp(s));
745
746 return zserv_send_message(client, s);
747}
748
86391e56
MS		 749/*
750 * Common utility send route notification, called from a path using a
751 * route_entry and from a path using a dataplane context.
752 */
a7704e1b 753static int route_notify_internal(const struct route_node *rn, int type,
86391e56
MS		 754 uint16_t instance, vrf_id_t vrf_id,
755 uint32_t table_id,
a7704e1b
DS		 756 enum zapi_route_notify_owner note, afi_t afi,
757 safi_t safi)
bf094f69
QY		 758{
759 struct zserv *client;
760 struct stream *s;
761 uint8_t blen;
762
86391e56 763 client = zserv_find_client(type, instance);
bf094f69 764 if (!client || !client->notify_owner) {
2dbe669b 765 if (IS_ZEBRA_DEBUG_PACKET)
bf094f69 766 zlog_debug(
a7704e1b
DS		 767 "Not Notifying Owner: %s about prefix %pRN(%u) %d vrf: %u",
768 zebra_route_string(type), rn, table_id, note,
2dbe669b 769 vrf_id);
bf094f69
QY		 770 return 0;
771 }
772
2dbe669b
DA		 773 if (IS_ZEBRA_DEBUG_PACKET)
774 zlog_debug(
a7704e1b
DS		 775 "Notifying Owner: %s about prefix %pRN(%u) %d vrf: %u",
776 zebra_route_string(type), rn, table_id, note, vrf_id);
bf094f69 777
55e74ca9
MS		 778 /* We're just allocating a small-ish buffer here, since we only
779 * encode a small amount of data.
780 */
781 s = stream_new(ZEBRA_SMALL_PACKET_SIZE);
782
bf094f69
QY		 783 stream_reset(s);
784
86391e56 785 zclient_create_header(s, ZEBRA_ROUTE_NOTIFY_OWNER, vrf_id);
bf094f69
QY		 786
787 stream_put(s, &note, sizeof(note));
788
a7704e1b 789 stream_putc(s, rn->p.family);
bf094f69 790
a7704e1b
DS		 791 blen = prefix_blen(&rn->p);
792 stream_putc(s, rn->p.prefixlen);
793 stream_put(s, &rn->p.u.prefix, blen);
bf094f69 794
86391e56 795 stream_putl(s, table_id);
bf094f69 796
77b38a4a
S		 797 /* Encode AFI, SAFI in the message */
798 stream_putc(s, afi);
799 stream_putc(s, safi);
800
bf094f69
QY		 801 stream_putw_at(s, 0, stream_get_endp(s));
802
21ccc0cf 803 return zserv_send_message(client, s);
bf094f69
QY		 804}
805
a7704e1b
DS		 806int zsend_route_notify_owner(const struct route_node *rn,
807 struct route_entry *re,
808 enum zapi_route_notify_owner note, afi_t afi,
809 safi_t safi)
86391e56 810{
a7704e1b 811 return (route_notify_internal(rn, re->type, re->instance, re->vrf_id,
77b38a4a 812 re->table, note, afi, safi));
86391e56
MS		 813}
814
7cdb1a84
MS		 815/*
816 * Route-owner notification using info from dataplane update context.
817 */
25779064 818int zsend_route_notify_owner_ctx(const struct zebra_dplane_ctx *ctx,
7cdb1a84
MS		 819 enum zapi_route_notify_owner note)
820{
a7704e1b
DS		 821 return (route_notify_internal(
822 rib_find_rn_from_ctx(ctx), dplane_ctx_get_type(ctx),
823 dplane_ctx_get_instance(ctx), dplane_ctx_get_vrf(ctx),
824 dplane_ctx_get_table(ctx), note, dplane_ctx_get_afi(ctx),
825 dplane_ctx_get_safi(ctx)));
77b38a4a
S		 826}
827
828static void zread_route_notify_request(ZAPI_HANDLER_ARGS)
829{
830 uint8_t notify;
831
832 STREAM_GETC(msg, notify);
833 client->notify_owner = notify;
834stream_failure:
835 return;
86391e56
MS		 836}
837
f62e5480 838void zsend_rule_notify_owner(const struct zebra_dplane_ctx *ctx,
bf094f69
QY		 839 enum zapi_rule_notify_owner note)
840{
841 struct listnode *node;
842 struct zserv *client;
843 struct stream *s;
844
845 if (IS_ZEBRA_DEBUG_PACKET)
f62e5480
JU		 846 zlog_debug("%s: Notifying %u", __func__,
847 dplane_ctx_rule_get_unique(ctx));
bf094f69 848
161e9ab7 849 for (ALL_LIST_ELEMENTS_RO(zrouter.client_list, node, client)) {
f62e5480 850 if (dplane_ctx_rule_get_sock(ctx) == client->sock)
bf094f69
QY		 851 break;
852 }
853
854 if (!client)
855 return;
856
857 s = stream_new(ZEBRA_MAX_PACKET_SIZ);
858
859 zclient_create_header(s, ZEBRA_RULE_NOTIFY_OWNER, VRF_DEFAULT);
860 stream_put(s, &note, sizeof(note));
f62e5480
JU		 861 stream_putl(s, dplane_ctx_rule_get_seq(ctx));
862 stream_putl(s, dplane_ctx_rule_get_priority(ctx));
863 stream_putl(s, dplane_ctx_rule_get_unique(ctx));
58a1d249 864 stream_put(s, dplane_ctx_rule_get_ifname(ctx), INTERFACE_NAMSIZ);
bf094f69
QY		 865
866 stream_putw_at(s, 0, stream_get_endp(s));
867
21ccc0cf 868 zserv_send_message(client, s);
bf094f69
QY		 869}
870
ef524230 871void zsend_iptable_notify_owner(const struct zebra_dplane_ctx *ctx,
33c08518 872 enum zapi_iptable_notify_owner note)
bf094f69
QY		 873{
874 struct listnode *node;
875 struct zserv *client;
876 struct stream *s;
ef524230
PG		 877 struct zebra_pbr_iptable ipt;
878 uint16_t cmd = ZEBRA_IPTABLE_NOTIFY_OWNER;
879
8d78e148 880 dplane_ctx_get_pbr_iptable(ctx, &ipt);
bf094f69
QY		 881
882 if (IS_ZEBRA_DEBUG_PACKET)
ef524230
PG		 883 zlog_debug("%s: Notifying %s id %u note %u", __func__,
884 zserv_command_string(cmd), ipt.unique, note);
bf094f69 885
161e9ab7 886 for (ALL_LIST_ELEMENTS_RO(zrouter.client_list, node, client)) {
ef524230 887 if (ipt.sock == client->sock)
bf094f69
QY		 888 break;
889 }
890
891 if (!client)
892 return;
893
894 s = stream_new(ZEBRA_MAX_PACKET_SIZ);
895
5162e000 896 zclient_create_header(s, cmd, VRF_DEFAULT);
e108096b 897 stream_putw(s, note);
ef524230
PG		 898 stream_putl(s, ipt.unique);
899 stream_put(s, ipt.ipset_name, ZEBRA_IPSET_NAME_SIZE);
bf094f69
QY		 900 stream_putw_at(s, 0, stream_get_endp(s));
901
21ccc0cf 902 zserv_send_message(client, s);
bf094f69
QY		 903}
904
33c08518
DS		 905void zsend_ipset_notify_owner(const struct zebra_dplane_ctx *ctx,
906 enum zapi_ipset_notify_owner note)
bf094f69
QY		 907{
908 struct listnode *node;
909 struct zserv *client;
910 struct stream *s;
ef524230
PG		 911 struct zebra_pbr_ipset ipset;
912 uint16_t cmd = ZEBRA_IPSET_NOTIFY_OWNER;
913
8249f96a 914 dplane_ctx_get_pbr_ipset(ctx, &ipset);
bf094f69
QY		 915
916 if (IS_ZEBRA_DEBUG_PACKET)
ef524230
PG		 917 zlog_debug("%s: Notifying %s id %u note %u", __func__,
918 zserv_command_string(cmd), ipset.unique, note);
bf094f69 919
161e9ab7 920 for (ALL_LIST_ELEMENTS_RO(zrouter.client_list, node, client)) {
ef524230 921 if (ipset.sock == client->sock)
bf094f69
QY		 922 break;
923 }
924
925 if (!client)
926 return;
927
928 s = stream_new(ZEBRA_MAX_PACKET_SIZ);
929
ef524230 930 zclient_create_header(s, cmd, VRF_DEFAULT);
e108096b 931 stream_putw(s, note);
ef524230
PG		 932 stream_putl(s, ipset.unique);
933 stream_put(s, ipset.ipset_name, ZEBRA_IPSET_NAME_SIZE);
bf094f69
QY		 934 stream_putw_at(s, 0, stream_get_endp(s));
935
21ccc0cf 936 zserv_send_message(client, s);
bf094f69
QY		 937}
938
ef524230 939void zsend_ipset_entry_notify_owner(const struct zebra_dplane_ctx *ctx,
33c08518 940 enum zapi_ipset_entry_notify_owner note)
bf094f69
QY		 941{
942 struct listnode *node;
943 struct zserv *client;
944 struct stream *s;
ef524230
PG		 945 struct zebra_pbr_ipset_entry ipent;
946 struct zebra_pbr_ipset ipset;
947 uint16_t cmd = ZEBRA_IPSET_ENTRY_NOTIFY_OWNER;
5162e000 948
f284c132 949 dplane_ctx_get_pbr_ipset_entry(ctx, &ipent);
8249f96a 950 dplane_ctx_get_pbr_ipset(ctx, &ipset);
bf094f69
QY		 951
952 if (IS_ZEBRA_DEBUG_PACKET)
5162e000 953 zlog_debug("%s: Notifying %s id %u note %u", __func__,
ef524230 954 zserv_command_string(cmd), ipent.unique, note);
bf094f69 955
161e9ab7 956 for (ALL_LIST_ELEMENTS_RO(zrouter.client_list, node, client)) {
ef524230 957 if (ipent.sock == client->sock)
bf094f69
QY		 958 break;
959 }
960
961 if (!client)
962 return;
963
964 s = stream_new(ZEBRA_MAX_PACKET_SIZ);
965
5162e000 966 zclient_create_header(s, cmd, VRF_DEFAULT);
e108096b 967 stream_putw(s, note);
ef524230
PG		 968 stream_putl(s, ipent.unique);
969 stream_put(s, ipset.ipset_name, ZEBRA_IPSET_NAME_SIZE);
bf094f69
QY		 970 stream_putw_at(s, 0, stream_get_endp(s));
971
21ccc0cf 972 zserv_send_message(client, s);
bf094f69
QY		 973}
974
7723e8d3
PG		 975void zsend_nhrp_neighbor_notify(int cmd, struct interface *ifp,
976 struct ipaddr *ipaddr, int ndm_state,
d603c077 977 union sockunion *link_layer_ipv4)
7723e8d3
PG		 978{
979 struct stream *s;
980 struct listnode *node, *nnode;
981 struct zserv *client;
982 afi_t afi;
d603c077 983 union sockunion ip;
7723e8d3
PG		 984
985 if (IS_ZEBRA_DEBUG_PACKET)
7d7be47e 986 zlog_debug("%s: Notifying Neighbor entry (%u)", __func__, cmd);
7723e8d3 987
d603c077
PG		 988 sockunion_family(&ip) = ipaddr_family(ipaddr);
989 afi = family2afi(sockunion_family(&ip));
990 memcpy((char *)sockunion_get_addr(&ip), &ipaddr->ip.addr,
991 family2addrsize(sockunion_family(&ip)));
992
7723e8d3 993 for (ALL_LIST_ELEMENTS(zrouter.client_list, node, nnode, client)) {
096f7609
IR		 994 if (!vrf_bitmap_check(client->nhrp_neighinfo[afi],
995 ifp->vrf->vrf_id))
7723e8d3
PG		 996 continue;
997
998 s = stream_new(ZEBRA_MAX_PACKET_SIZ);
c4e1fd52
PG		 999 zclient_neigh_ip_encode(s, cmd, &ip, link_layer_ipv4, ifp,
1000 ndm_state);
7723e8d3 1001 stream_putw_at(s, 0, stream_get_endp(s));
7723e8d3
PG		 1002 zserv_send_message(client, s);
1003 }
1004}
1005
1006
98a3fb0a
SM		 1007/* Router-id is updated. Send ZEBRA_ROUTER_ID_UPDATE to client. */
1008int zsend_router_id_update(struct zserv *client, afi_t afi, struct prefix *p,
bf094f69
QY		 1009 vrf_id_t vrf_id)
1010{
1011 int blen;
98a3fb0a 1012 struct stream *s;
bf094f69
QY		 1013
1014 /* Check this client need interface information. */
98a3fb0a 1015 if (!vrf_bitmap_check(client->ridinfo[afi], vrf_id))
bf094f69
QY		 1016 return 0;
1017
98a3fb0a 1018 s = stream_new(ZEBRA_MAX_PACKET_SIZ);
bf094f69
QY		 1019
1020 /* Message type. */
1021 zclient_create_header(s, ZEBRA_ROUTER_ID_UPDATE, vrf_id);
1022
1023 /* Prefix information. */
1024 stream_putc(s, p->family);
1025 blen = prefix_blen(p);
1026 stream_put(s, &p->u.prefix, blen);
1027 stream_putc(s, p->prefixlen);
1028
1029 /* Write packet size. */
1030 stream_putw_at(s, 0, stream_get_endp(s));
1031
21ccc0cf 1032 return zserv_send_message(client, s);
bf094f69
QY		 1033}
1034
1035/*
1036 * Function used by Zebra to send a PW status update to LDP daemon
1037 */
1038int zsend_pw_update(struct zserv *client, struct zebra_pw *pw)
1039{
1040 struct stream *s = stream_new(ZEBRA_MAX_PACKET_SIZ);
1041
1042 zclient_create_header(s, ZEBRA_PW_STATUS_UPDATE, pw->vrf_id);
3682bd90 1043 stream_write(s, pw->ifname, INTERFACE_NAMSIZ);
bf094f69
QY		 1044 stream_putl(s, pw->ifindex);
1045 stream_putl(s, pw->status);
1046
1047 /* Put length at the first point of the stream. */
1048 stream_putw_at(s, 0, stream_get_endp(s));
1049
21ccc0cf 1050 return zserv_send_message(client, s);
bf094f69
QY		 1051}
1052
1053/* Send response to a get label chunk request to client */
e11d7c96 1054int zsend_assign_label_chunk_response(struct zserv *client, vrf_id_t vrf_id,
e11d7c96 1055 struct label_manager_chunk *lmc)
bf094f69 1056{
bf094f69
QY		 1057 struct stream *s = stream_new(ZEBRA_MAX_PACKET_SIZ);
1058
1059 zclient_create_header(s, ZEBRA_GET_LABEL_CHUNK, vrf_id);
f004f7c3 1060 /* proto */
4cebdb9b 1061 stream_putc(s, client->proto);
f004f7c3 1062 /* instance */
4cebdb9b 1063 stream_putw(s, client->instance);
bf094f69
QY		 1064
1065 if (lmc) {
1066 /* keep */
1067 stream_putc(s, lmc->keep);
1068 /* start and end labels */
1069 stream_putl(s, lmc->start);
1070 stream_putl(s, lmc->end);
1071 }
1072
1073 /* Write packet size. */
1074 stream_putw_at(s, 0, stream_get_endp(s));
1075
732d22cb 1076 return zserv_send_message(client, s);
bf094f69
QY		 1077}
1078
1079/* Send response to a label manager connect request to client */
e11d7c96
EDP		 1080int zsend_label_manager_connect_response(struct zserv *client, vrf_id_t vrf_id,
1081 unsigned short result)
bf094f69 1082{
bf094f69
QY		 1083 struct stream *s = stream_new(ZEBRA_MAX_PACKET_SIZ);
1084
1085 zclient_create_header(s, ZEBRA_LABEL_MANAGER_CONNECT, vrf_id);
1086
5dffb0e9
FR		 1087 /* proto */
1088 stream_putc(s, client->proto);
1089
1090 /* instance */
1091 stream_putw(s, client->instance);
1092
bf094f69
QY		 1093 /* result */
1094 stream_putc(s, result);
1095
1096 /* Write packet size. */
1097 stream_putw_at(s, 0, stream_get_endp(s));
1098
732d22cb 1099 return zserv_send_message(client, s);
bf094f69
QY		 1100}
1101
1102/* Send response to a get table chunk request to client */
1103static int zsend_assign_table_chunk_response(struct zserv *client,
1104 vrf_id_t vrf_id,
1105 struct table_manager_chunk *tmc)
1106{
1107 struct stream *s = stream_new(ZEBRA_MAX_PACKET_SIZ);
1108
1109 zclient_create_header(s, ZEBRA_GET_TABLE_CHUNK, vrf_id);
1110
1111 if (tmc) {
1112 /* start and end labels */
1113 stream_putl(s, tmc->start);
1114 stream_putl(s, tmc->end);
1115 }
1116
1117 /* Write packet size. */
1118 stream_putw_at(s, 0, stream_get_endp(s));
1119
21ccc0cf 1120 return zserv_send_message(client, s);
bf094f69
QY		 1121}
1122
1123static int zsend_table_manager_connect_response(struct zserv *client,
1124 vrf_id_t vrf_id,
1125 uint16_t result)
1126{
1127 struct stream *s = stream_new(ZEBRA_MAX_PACKET_SIZ);
1128
1129 zclient_create_header(s, ZEBRA_TABLE_MANAGER_CONNECT, vrf_id);
1130
1131 /* result */
1132 stream_putc(s, result);
1133
1134 stream_putw_at(s, 0, stream_get_endp(s));
1135
21ccc0cf 1136 return zserv_send_message(client, s);
bf094f69
QY		 1137}
1138
f5ca329b
HS		 1139/* SRv6 locator add notification from zebra daemon. */
1140int zsend_zebra_srv6_locator_add(struct zserv *client, struct srv6_locator *loc)
1141{
1142 struct stream *s = stream_new(ZEBRA_MAX_PACKET_SIZ);
1143
1144 zclient_create_header(s, ZEBRA_SRV6_LOCATOR_ADD, VRF_DEFAULT);
1145 zapi_srv6_locator_encode(s, loc);
1146 stream_putw_at(s, 0, stream_get_endp(s));
1147
1148 return zserv_send_message(client, s);
1149}
1150
1151/* SRv6 locator delete notification from zebra daemon. */
1152int zsend_zebra_srv6_locator_delete(struct zserv *client,
1153 struct srv6_locator *loc)
1154{
1155 struct stream *s = stream_new(ZEBRA_MAX_PACKET_SIZ);
1156
1157 zclient_create_header(s, ZEBRA_SRV6_LOCATOR_DELETE, VRF_DEFAULT);
1158 zapi_srv6_locator_encode(s, loc);
1159 stream_putw_at(s, 0, stream_get_endp(s));
1160
1161 return zserv_send_message(client, s);
1162}
1163
bf094f69
QY		 1164/* Inbound message handling ------------------------------------------------ */
1165
bf094f69
QY		 1166/* Nexthop register */
1167static void zread_rnh_register(ZAPI_HANDLER_ARGS)
1168{
1169 struct rnh *rnh;
1170 struct stream *s;
1171 struct prefix p;
1172 unsigned short l = 0;
6cd9a93d 1173 uint8_t connected = 0;
ed6cec97 1174 uint8_t resolve_via_default;
1d30d1f4 1175 bool exist;
906b54dd
DS		 1176 bool flag_changed = false;
1177 uint8_t orig_flags;
027db469 1178 safi_t safi;
bf094f69
QY		 1179
1180 if (IS_ZEBRA_DEBUG_NHT)
1181 zlog_debug(
6071e5e9 1182 "rnh_register msg from client %s: hdr->length=%d vrf=%u",
bf094f69 1183 zebra_route_string(client->proto), hdr->length,
bf094f69
QY		 1184 zvrf->vrf->vrf_id);
1185
1186 s = msg;
1187
469d6277
DS		 1188 if (!client->nh_reg_time)
1189 client->nh_reg_time = monotime(NULL);
bf094f69
QY		 1190
1191 while (l < hdr->length) {
6cd9a93d 1192 STREAM_GETC(s, connected);
ed6cec97 1193 STREAM_GETC(s, resolve_via_default);
027db469 1194 STREAM_GETW(s, safi);
bf094f69
QY		 1195 STREAM_GETW(s, p.family);
1196 STREAM_GETC(s, p.prefixlen);
027db469 1197 l += 7;
bf094f69 1198 if (p.family == AF_INET) {
ab5990d8 1199 client->v4_nh_watch_add_cnt++;
bf094f69 1200 if (p.prefixlen > IPV4_MAX_BITLEN) {
9df414fe 1201 zlog_debug(
bf094f69 1202 "%s: Specified prefix hdr->length %d is too large for a v4 address",
15569c58 1203 __func__, p.prefixlen);
bf094f69
QY		 1204 return;
1205 }
1206 STREAM_GET(&p.u.prefix4.s_addr, s, IPV4_MAX_BYTELEN);
1207 l += IPV4_MAX_BYTELEN;
1208 } else if (p.family == AF_INET6) {
ab5990d8 1209 client->v6_nh_watch_add_cnt++;
bf094f69 1210 if (p.prefixlen > IPV6_MAX_BITLEN) {
9df414fe 1211 zlog_debug(
bf094f69 1212 "%s: Specified prefix hdr->length %d is to large for a v6 address",
15569c58 1213 __func__, p.prefixlen);
bf094f69
QY		 1214 return;
1215 }
1216 STREAM_GET(&p.u.prefix6, s, IPV6_MAX_BYTELEN);
1217 l += IPV6_MAX_BYTELEN;
1218 } else {
af4c2728 1219 flog_err(
e914ccbe 1220 EC_ZEBRA_UNKNOWN_FAMILY,
1d5453d6 1221 "rnh_register: Received unknown family type %d",
bf094f69
QY		 1222 p.family);
1223 return;
1224 }
e9ac2861 1225 rnh = zebra_add_rnh(&p, zvrf_id(zvrf), safi, &exist);
1d30d1f4
DS		 1226 if (!rnh)
1227 return;
1228
906b54dd 1229 orig_flags = rnh->flags;
6cd9a93d 1230 if (connected && !CHECK_FLAG(rnh->flags, ZEBRA_NHT_CONNECTED))
6071e5e9 1231 SET_FLAG(rnh->flags, ZEBRA_NHT_CONNECTED);
6cd9a93d
DS		 1232 else if (!connected
1233 && CHECK_FLAG(rnh->flags, ZEBRA_NHT_CONNECTED))
6071e5e9 1234 UNSET_FLAG(rnh->flags, ZEBRA_NHT_CONNECTED);
bf094f69 1235
ed6cec97
DS		 1236 if (resolve_via_default)
1237 SET_FLAG(rnh->flags, ZEBRA_NHT_RESOLVE_VIA_DEFAULT);
bf094f69 1238
906b54dd
DS		 1239 if (orig_flags != rnh->flags)
1240 flag_changed = true;
1241
bf094f69 1242 /* Anything not AF_INET/INET6 has been filtered out above */
906b54dd 1243 if (!exist || flag_changed)
d597533a 1244 zebra_evaluate_rnh(zvrf, family2afi(p.family), 1, &p,
027db469 1245 safi);
dd25a6b3 1246
6071e5e9 1247 zebra_add_rnh_client(rnh, client, zvrf_id(zvrf));
bf094f69
QY		 1248 }
1249
1250stream_failure:
1251 return;
1252}
1253
1254/* Nexthop register */
1255static void zread_rnh_unregister(ZAPI_HANDLER_ARGS)
1256{
1257 struct rnh *rnh;
1258 struct stream *s;
1259 struct prefix p;
1260 unsigned short l = 0;
027db469 1261 safi_t safi;
bf094f69
QY		 1262
1263 if (IS_ZEBRA_DEBUG_NHT)
1264 zlog_debug(
63efca0e 1265 "rnh_unregister msg from client %s: hdr->length=%d vrf: %u",
bf094f69
QY		 1266 zebra_route_string(client->proto), hdr->length,
1267 zvrf->vrf->vrf_id);
1268
1269 s = msg;
1270
1271 while (l < hdr->length) {
6cd9a93d 1272 uint8_t ignore;
bf094f69 1273
6cd9a93d
DS		 1274 STREAM_GETC(s, ignore);
1275 if (ignore != 0)
ed6cec97 1276 goto stream_failure;
6cd9a93d
DS		 1277 STREAM_GETC(s, ignore);
1278 if (ignore != 0)
bf094f69
QY		 1279 goto stream_failure;
1280
027db469 1281 STREAM_GETW(s, safi);
bf094f69
QY		 1282 STREAM_GETW(s, p.family);
1283 STREAM_GETC(s, p.prefixlen);
027db469 1284 l += 7;
bf094f69 1285 if (p.family == AF_INET) {
ab5990d8 1286 client->v4_nh_watch_rem_cnt++;
bf094f69 1287 if (p.prefixlen > IPV4_MAX_BITLEN) {
9df414fe 1288 zlog_debug(
bf094f69 1289 "%s: Specified prefix hdr->length %d is to large for a v4 address",
15569c58 1290 __func__, p.prefixlen);
bf094f69
QY		 1291 return;
1292 }
1293 STREAM_GET(&p.u.prefix4.s_addr, s, IPV4_MAX_BYTELEN);
1294 l += IPV4_MAX_BYTELEN;
1295 } else if (p.family == AF_INET6) {
ab5990d8 1296 client->v6_nh_watch_rem_cnt++;
bf094f69 1297 if (p.prefixlen > IPV6_MAX_BITLEN) {
9df414fe 1298 zlog_debug(
bf094f69 1299 "%s: Specified prefix hdr->length %d is to large for a v6 address",
15569c58 1300 __func__, p.prefixlen);
bf094f69
QY		 1301 return;
1302 }
1303 STREAM_GET(&p.u.prefix6, s, IPV6_MAX_BYTELEN);
1304 l += IPV6_MAX_BYTELEN;
1305 } else {
af4c2728 1306 flog_err(
e914ccbe 1307 EC_ZEBRA_UNKNOWN_FAMILY,
1d5453d6 1308 "rnh_register: Received unknown family type %d",
bf094f69
QY		 1309 p.family);
1310 return;
1311 }
027db469 1312 rnh = zebra_lookup_rnh(&p, zvrf_id(zvrf), safi);
bf094f69
QY		 1313 if (rnh) {
1314 client->nh_dereg_time = monotime(NULL);
6071e5e9 1315 zebra_remove_rnh_client(rnh, client);
bf094f69
QY		 1316 }
1317 }
1318stream_failure:
1319 return;
1320}
1321
1322#define ZEBRA_MIN_FEC_LENGTH 5
1323
1324/* FEC register */
1325static void zread_fec_register(ZAPI_HANDLER_ARGS)
1326{
1327 struct stream *s;
1328 unsigned short l = 0;
1329 struct prefix p;
1330 uint16_t flags;
57592a53 1331 uint32_t label = MPLS_INVALID_LABEL;
bf094f69
QY		 1332 uint32_t label_index = MPLS_INVALID_LABEL_INDEX;
1333
1334 s = msg;
1335 zvrf = vrf_info_lookup(VRF_DEFAULT);
1336 if (!zvrf)
8b1766b1 1337 return;
bf094f69
QY		 1338
1339 /*
1340 * The minimum amount of data that can be sent for one fec
1341 * registration
1342 */
1343 if (hdr->length < ZEBRA_MIN_FEC_LENGTH) {
af4c2728 1344 flog_err(
e914ccbe 1345 EC_ZEBRA_IRDP_LEN_MISMATCH,
bf094f69
QY		 1346 "fec_register: Received a fec register of hdr->length %d, it is of insufficient size to properly decode",
1347 hdr->length);
1348 return;
1349 }
1350
1351 while (l < hdr->length) {
1352 STREAM_GETW(s, flags);
1353 memset(&p, 0, sizeof(p));
1354 STREAM_GETW(s, p.family);
1355 if (p.family != AF_INET && p.family != AF_INET6) {
af4c2728 1356 flog_err(
e914ccbe 1357 EC_ZEBRA_UNKNOWN_FAMILY,
1d5453d6 1358 "fec_register: Received unknown family type %d",
bf094f69
QY		 1359 p.family);
1360 return;
1361 }
1362 STREAM_GETC(s, p.prefixlen);
1363 if ((p.family == AF_INET && p.prefixlen > IPV4_MAX_BITLEN)
1364 || (p.family == AF_INET6
1365 && p.prefixlen > IPV6_MAX_BITLEN)) {
9df414fe 1366 zlog_debug(
bf094f69 1367 "%s: Specified prefix hdr->length: %d is to long for %d",
15569c58 1368 __func__, p.prefixlen, p.family);
bf094f69
QY		 1369 return;
1370 }
1371 l += 5;
1372 STREAM_GET(&p.u.prefix, s, PSIZE(p.prefixlen));
1373 l += PSIZE(p.prefixlen);
57592a53
AD		 1374 if (flags & ZEBRA_FEC_REGISTER_LABEL) {
1375 STREAM_GETL(s, label);
1376 l += 4;
1377 } else if (flags & ZEBRA_FEC_REGISTER_LABEL_INDEX) {
bf094f69
QY		 1378 STREAM_GETL(s, label_index);
1379 l += 4;
57592a53
AD		 1380 }
1381
1382 zebra_mpls_fec_register(zvrf, &p, label, label_index, client);
bf094f69
QY		 1383 }
1384
1385stream_failure:
1386 return;
1387}
1388
1389/* FEC unregister */
1390static void zread_fec_unregister(ZAPI_HANDLER_ARGS)
1391{
1392 struct stream *s;
1393 unsigned short l = 0;
1394 struct prefix p;
1395 uint16_t flags;
1396
1397 s = msg;
1398 zvrf = vrf_info_lookup(VRF_DEFAULT);
1399 if (!zvrf)
8b1766b1 1400 return;
bf094f69
QY		 1401
1402 /*
1403 * The minimum amount of data that can be sent for one
1404 * fec unregistration
1405 */
1406 if (hdr->length < ZEBRA_MIN_FEC_LENGTH) {
af4c2728 1407 flog_err(
e914ccbe 1408 EC_ZEBRA_IRDP_LEN_MISMATCH,
bf094f69
QY		 1409 "fec_unregister: Received a fec unregister of hdr->length %d, it is of insufficient size to properly decode",
1410 hdr->length);
1411 return;
1412 }
1413
1414 while (l < hdr->length) {
1415 STREAM_GETW(s, flags);
1416 if (flags != 0)
1417 goto stream_failure;
1418
1419 memset(&p, 0, sizeof(p));
1420 STREAM_GETW(s, p.family);
1421 if (p.family != AF_INET && p.family != AF_INET6) {
af4c2728 1422 flog_err(
e914ccbe 1423 EC_ZEBRA_UNKNOWN_FAMILY,
1d5453d6 1424 "fec_unregister: Received unknown family type %d",
bf094f69
QY		 1425 p.family);
1426 return;
1427 }
1428 STREAM_GETC(s, p.prefixlen);
1429 if ((p.family == AF_INET && p.prefixlen > IPV4_MAX_BITLEN)
1430 || (p.family == AF_INET6
1431 && p.prefixlen > IPV6_MAX_BITLEN)) {
9df414fe 1432 zlog_debug(
bf094f69 1433 "%s: Received prefix hdr->length %d which is greater than %d can support",
15569c58 1434 __func__, p.prefixlen, p.family);
bf094f69
QY		 1435 return;
1436 }
1437 l += 5;
1438 STREAM_GET(&p.u.prefix, s, PSIZE(p.prefixlen));
1439 l += PSIZE(p.prefixlen);
1440 zebra_mpls_fec_unregister(zvrf, &p, client);
1441 }
1442
1443stream_failure:
1444 return;
1445}
1446
1447
1448/*
1449 * Register zebra server interface information.
1450 * Send current all interface and address information.
1451 */
1452static void zread_interface_add(ZAPI_HANDLER_ARGS)
1453{
1454 struct vrf *vrf;
1455 struct interface *ifp;
1456
9212d1e1 1457 vrf_id_t vrf_id = zvrf_id(zvrf);
1458 if (vrf_id != VRF_DEFAULT && vrf_id != VRF_UNKNOWN) {
1459 FOR_ALL_INTERFACES (zvrf->vrf, ifp) {
1460 /* Skip pseudo interface. */
1461 if (!CHECK_FLAG(ifp->status, ZEBRA_INTERFACE_ACTIVE))
1462 continue;
1463
1464 zsend_interface_add(client, ifp);
1465 zsend_interface_link_params(client, ifp);
1466 zsend_interface_addresses(client, ifp);
1467 }
1468 return;
1469 }
1470
bf094f69
QY		 1471 RB_FOREACH (vrf, vrf_id_head, &vrfs_by_id) {
1472 FOR_ALL_INTERFACES (vrf, ifp) {
1473 /* Skip pseudo interface. */
1474 if (!CHECK_FLAG(ifp->status, ZEBRA_INTERFACE_ACTIVE))
1475 continue;
1476
1477 zsend_interface_add(client, ifp);
27ecbea3 1478 zsend_interface_link_params(client, ifp);
bf094f69
QY		 1479 zsend_interface_addresses(client, ifp);
1480 }
1481 }
1482}
1483
1484/* Unregister zebra server interface information. */
1485static void zread_interface_delete(ZAPI_HANDLER_ARGS)
1486{
bf094f69
QY		 1487}
1488
c3bd894e
QY		 1489/*
1490 * Handle message requesting interface be set up or down.
1491 */
1492static void zread_interface_set_protodown(ZAPI_HANDLER_ARGS)
1493{
1494 ifindex_t ifindex;
1495 struct interface *ifp;
1496 char down;
5d414138 1497 enum protodown_reasons reason;
c3bd894e
QY		 1498
1499 STREAM_GETL(msg, ifindex);
1500 STREAM_GETC(msg, down);
1501
1502 /* set ifdown */
1503 ifp = if_lookup_by_index_per_ns(zebra_ns_lookup(NS_DEFAULT), ifindex);
c3bd894e 1504
5d414138 1505 if (!ifp) {
65dc7dd3
QY		 1506 zlog_warn(
1507 "Cannot set protodown %s for interface %u; does not exist",
1508 down ? "on" : "off", ifindex);
5d414138
SW		 1509
1510 return;
1511 }
1512
1513 switch (client->proto) {
1514 case ZEBRA_ROUTE_VRRP:
1515 reason = ZEBRA_PROTODOWN_VRRP;
1516 break;
1517 case ZEBRA_ROUTE_SHARP:
1518 reason = ZEBRA_PROTODOWN_SHARP;
1519 break;
1520 default:
1521 reason = 0;
1522 break;
65dc7dd3
QY		 1523 }
1524
5d414138 1525 zebra_if_set_protodown(ifp, down, reason);
c3bd894e
QY		 1526
1527stream_failure:
1528 return;
1529}
1530
786a9bd9 1531bool zserv_nexthop_num_warn(const char *caller, const struct prefix *p,
bf094f69
QY		 1532 const unsigned int nexthop_num)
1533{
b3f2b590 1534 if (nexthop_num > zrouter.multipath_num) {
bf094f69 1535 char buff[PREFIX2STR_BUFFER];
8b1766b1 1536
e270f004
SW		 1537 if (p)
1538 prefix2str(p, buff, sizeof(buff));
1539
9df414fe 1540 flog_warn(
e914ccbe 1541 EC_ZEBRA_MORE_NH_THAN_MULTIPATH,
bf094f69 1542 "%s: Prefix %s has %d nexthops, but we can only use the first %d",
e270f004
SW		 1543 caller, (p ? buff : "(NULL)"), nexthop_num,
1544 zrouter.multipath_num);
786a9bd9 1545 return true;
bf094f69 1546 }
786a9bd9
DS		 1547
1548 return false;
bf094f69
QY		 1549}
1550
62e46303
MS		 1551/*
1552 * Create a new nexthop based on a zapi nexthop.
1553 */
2f35a820
DS		 1554static struct nexthop *nexthop_from_zapi(const struct zapi_nexthop *api_nh,
1555 uint32_t flags, struct prefix *p,
1556 uint16_t backup_nexthop_num)
62e46303
MS		 1557{
1558 struct nexthop *nexthop = NULL;
1559 struct ipaddr vtep_ip;
1560 struct interface *ifp;
474aebd9 1561 int i;
62e46303
MS		 1562 char nhbuf[INET6_ADDRSTRLEN] = "";
1563
62e46303
MS		 1564 switch (api_nh->type) {
1565 case NEXTHOP_TYPE_IFINDEX:
1566 nexthop = nexthop_from_ifindex(api_nh->ifindex, api_nh->vrf_id);
1567 break;
1568 case NEXTHOP_TYPE_IPV4:
1569 if (IS_ZEBRA_DEBUG_RECV) {
1570 inet_ntop(AF_INET, &api_nh->gate.ipv4, nhbuf,
1571 sizeof(nhbuf));
1572 zlog_debug("%s: nh=%s, vrf_id=%d", __func__,
1573 nhbuf, api_nh->vrf_id);
1574 }
1575 nexthop = nexthop_from_ipv4(&api_nh->gate.ipv4, NULL,
1576 api_nh->vrf_id);
1577 break;
1578 case NEXTHOP_TYPE_IPV4_IFINDEX:
1579 if (IS_ZEBRA_DEBUG_RECV) {
1580 inet_ntop(AF_INET, &api_nh->gate.ipv4, nhbuf,
1581 sizeof(nhbuf));
1582 zlog_debug("%s: nh=%s, vrf_id=%d, ifindex=%d",
1583 __func__, nhbuf, api_nh->vrf_id,
1584 api_nh->ifindex);
1585 }
1586
1587 nexthop = nexthop_from_ipv4_ifindex(
1588 &api_nh->gate.ipv4, NULL, api_nh->ifindex,
1589 api_nh->vrf_id);
1590
62e46303
MS		 1591 /* Special handling for IPv4 routes sourced from EVPN:
1592 * the nexthop and associated MAC need to be installed.
1593 */
2f35a820 1594 if (CHECK_FLAG(flags, ZEBRA_FLAG_EVPN_ROUTE)) {
6006b807 1595 memset(&vtep_ip, 0, sizeof(vtep_ip));
62e46303
MS		 1596 vtep_ip.ipa_type = IPADDR_V4;
1597 memcpy(&(vtep_ip.ipaddr_v4), &(api_nh->gate.ipv4),
1598 sizeof(struct in_addr));
8244ba34 1599 zebra_rib_queue_evpn_route_add(
ff9aca4f 1600 api_nh->vrf_id, &api_nh->rmac, &vtep_ip, p);
62e46303
MS		 1601 }
1602 break;
1603 case NEXTHOP_TYPE_IPV6:
1604 if (IS_ZEBRA_DEBUG_RECV) {
1605 inet_ntop(AF_INET6, &api_nh->gate.ipv6, nhbuf,
1606 sizeof(nhbuf));
1607 zlog_debug("%s: nh=%s, vrf_id=%d", __func__,
1608 nhbuf, api_nh->vrf_id);
1609 }
1610 nexthop = nexthop_from_ipv6(&api_nh->gate.ipv6, api_nh->vrf_id);
1611 break;
1612 case NEXTHOP_TYPE_IPV6_IFINDEX:
1613 if (IS_ZEBRA_DEBUG_RECV) {
1614 inet_ntop(AF_INET6, &api_nh->gate.ipv6, nhbuf,
1615 sizeof(nhbuf));
1616 zlog_debug("%s: nh=%s, vrf_id=%d, ifindex=%d",
1617 __func__, nhbuf, api_nh->vrf_id,
1618 api_nh->ifindex);
1619 }
1620 nexthop = nexthop_from_ipv6_ifindex(&api_nh->gate.ipv6,
1621 api_nh->ifindex,
1622 api_nh->vrf_id);
1623
1624 /* Special handling for IPv6 routes sourced from EVPN:
1625 * the nexthop and associated MAC need to be installed.
1626 */
2f35a820 1627 if (CHECK_FLAG(flags, ZEBRA_FLAG_EVPN_ROUTE)) {
6006b807 1628 memset(&vtep_ip, 0, sizeof(vtep_ip));
62e46303
MS		 1629 vtep_ip.ipa_type = IPADDR_V6;
1630 memcpy(&vtep_ip.ipaddr_v6, &(api_nh->gate.ipv6),
1631 sizeof(struct in6_addr));
8244ba34 1632 zebra_rib_queue_evpn_route_add(
ff9aca4f 1633 api_nh->vrf_id, &api_nh->rmac, &vtep_ip, p);
62e46303
MS		 1634 }
1635 break;
1636 case NEXTHOP_TYPE_BLACKHOLE:
1637 if (IS_ZEBRA_DEBUG_RECV)
1638 zlog_debug("%s: nh blackhole %d",
1639 __func__, api_nh->bh_type);
1640
0789eb69
KM		 1641 nexthop =
1642 nexthop_from_blackhole(api_nh->bh_type, api_nh->vrf_id);
62e46303
MS		 1643 break;
1644 }
1645
1646 /* Return early if we couldn't process the zapi nexthop */
1647 if (nexthop == NULL) {
1648 goto done;
1649 }
1650
12b4d77b 1651 /* Mark nexthop as onlink either if client has explicitly told us
1652 * to or if the nexthop is on an 'unnumbered' interface.
1653 */
62e46303
MS		 1654 if (CHECK_FLAG(api_nh->flags, ZAPI_NEXTHOP_FLAG_ONLINK))
1655 SET_FLAG(nexthop->flags, NEXTHOP_FLAG_ONLINK);
12b4d77b 1656 else if (api_nh->type == NEXTHOP_TYPE_IPV4_IFINDEX) {
1657 ifp = if_lookup_by_index(api_nh->ifindex, api_nh->vrf_id);
1658 if (ifp && connected_is_unnumbered(ifp))
1659 SET_FLAG(nexthop->flags, NEXTHOP_FLAG_ONLINK);
1660 }
62e46303
MS		 1661
1662 if (CHECK_FLAG(api_nh->flags, ZAPI_NEXTHOP_FLAG_WEIGHT))
1663 nexthop->weight = api_nh->weight;
1664
1d48702e 1665 if (CHECK_FLAG(api_nh->flags, ZAPI_NEXTHOP_FLAG_HAS_BACKUP)) {
474aebd9
MS		 1666 /* Validate count */
1667 if (api_nh->backup_num > NEXTHOP_MAX_BACKUPS) {
1d48702e 1668 if (IS_ZEBRA_DEBUG_RECV || IS_ZEBRA_DEBUG_EVENT)
474aebd9
MS		 1669 zlog_debug("%s: invalid backup nh count %d",
1670 __func__, api_nh->backup_num);
1671 nexthop_free(nexthop);
1672 nexthop = NULL;
1673 goto done;
1674 }
1675
1676 /* Copy backup info */
1677 SET_FLAG(nexthop->flags, NEXTHOP_FLAG_HAS_BACKUP);
1678 nexthop->backup_num = api_nh->backup_num;
1679
1680 for (i = 0; i < api_nh->backup_num; i++) {
1681 /* Validate backup index */
2f35a820 1682 if (api_nh->backup_idx[i] < backup_nexthop_num) {
474aebd9
MS		 1683 nexthop->backup_idx[i] = api_nh->backup_idx[i];
1684 } else {
1685 if (IS_ZEBRA_DEBUG_RECV || IS_ZEBRA_DEBUG_EVENT)
1686 zlog_debug("%s: invalid backup nh idx %d",
1687 __func__,
1688 api_nh->backup_idx[i]);
1689 nexthop_free(nexthop);
1690 nexthop = NULL;
1691 goto done;
1692 }
1d48702e
MS		 1693 }
1694 }
474aebd9 1695
62e46303
MS		 1696done:
1697 return nexthop;
1698}
1699
2f35a820
DS		 1700static bool zapi_read_nexthops(struct zserv *client, struct prefix *p,
1701 struct zapi_nexthop *nhops, uint32_t flags,
1702 uint32_t message, uint16_t nexthop_num,
1703 uint16_t backup_nh_num,
f70da2a3
DS		 1704 struct nexthop_group **png,
1705 struct nhg_backup_info **pbnhg)
bf094f69 1706{
0eb97b86 1707 struct nexthop_group *ng = NULL;
1d48702e 1708 struct nhg_backup_info *bnhg = NULL;
2f35a820 1709 uint16_t i;
f70da2a3 1710 struct nexthop *last_nh = NULL;
bf094f69 1711
f70da2a3 1712 assert(!(png && pbnhg));
c2c02b76 1713
2f35a820 1714 if (png)
66c28560 1715 ng = nexthop_group_new();
bf094f69 1716
2f35a820 1717 if (pbnhg && backup_nh_num > 0) {
f70da2a3 1718 if (IS_ZEBRA_DEBUG_RECV)
2f35a820
DS		 1719 zlog_debug("%s: adding %d backup nexthops", __func__,
1720 backup_nh_num);
7fcb24bb 1721
66c28560 1722 bnhg = zebra_nhg_backup_alloc();
62e46303
MS		 1723 }
1724
bf094f69
QY		 1725 /*
1726 * TBD should _all_ of the nexthop add operations use
1727 * api_nh->vrf_id instead of re->vrf_id ? I only changed
1728 * for cases NEXTHOP_TYPE_IPV4 and NEXTHOP_TYPE_IPV6.
1729 */
f70da2a3
DS		 1730 for (i = 0; i < nexthop_num; i++) {
1731 struct nexthop *nexthop;
1732 enum lsp_types_t label_type;
1733 char nhbuf[NEXTHOP_STRLEN];
1734 char labelbuf[MPLS_LABEL_STRLEN];
1735 struct zapi_nexthop *api_nh = &nhops[i];
7fcb24bb 1736
62e46303 1737 /* Convert zapi nexthop */
2f35a820 1738 nexthop = nexthop_from_zapi(api_nh, flags, p, backup_nh_num);
62e46303
MS		 1739 if (!nexthop) {
1740 flog_warn(
1741 EC_ZEBRA_NEXTHOP_CREATION_FAILED,
f70da2a3
DS		 1742 "%s: Nexthops Specified: %u(%u) but we failed to properly create one",
1743 __func__, nexthop_num, i);
1744 if (ng)
1745 nexthop_group_delete(&ng);
1746 if (bnhg)
1747 zebra_nhg_backup_free(&bnhg);
1748 return false;
62e46303 1749 }
7fcb24bb 1750
ff9aca4f
SW		 1751 if (bnhg
1752 && CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_HAS_BACKUP)) {
f70da2a3
DS		 1753 if (IS_ZEBRA_DEBUG_RECV) {
1754 nexthop2str(nexthop, nhbuf, sizeof(nhbuf));
1755 zlog_debug("%s: backup nh %s with BACKUP flag!",
1756 __func__, nhbuf);
1757 }
1758 UNSET_FLAG(nexthop->flags, NEXTHOP_FLAG_HAS_BACKUP);
1759 nexthop->backup_num = 0;
1760 }
1761
2f35a820 1762 if (CHECK_FLAG(message, ZAPI_MESSAGE_SRTE)) {
31f937fb
SM		 1763 SET_FLAG(nexthop->flags, NEXTHOP_FLAG_SRTE);
1764 nexthop->srte_color = api_nh->srte_color;
1765 }
1766
62e46303
MS		 1767 /* MPLS labels for BGP-LU or Segment Routing */
1768 if (CHECK_FLAG(api_nh->flags, ZAPI_NEXTHOP_FLAG_LABEL)
1769 && api_nh->type != NEXTHOP_TYPE_IFINDEX
1770 && api_nh->type != NEXTHOP_TYPE_BLACKHOLE
1771 && api_nh->label_num > 0) {
7fcb24bb 1772
62e46303 1773 label_type = lsp_type_from_re_type(client->proto);
62e46303
MS		 1774 nexthop_add_labels(nexthop, label_type,
1775 api_nh->label_num,
1776 &api_nh->labels[0]);
bf094f69 1777 }
bf094f69 1778
c60c1ade 1779 if (CHECK_FLAG(api_nh->flags, ZAPI_NEXTHOP_FLAG_SEG6LOCAL)
8689b25a
HS		 1780 && api_nh->type != NEXTHOP_TYPE_BLACKHOLE) {
1781 if (IS_ZEBRA_DEBUG_RECV)
1782 zlog_debug("%s: adding seg6local action %s",
1783 __func__,
1784 seg6local_action2str(
1785 api_nh->seg6local_action));
1786
eab0f8f0
HS		 1787 nexthop_add_srv6_seg6local(nexthop,
1788 api_nh->seg6local_action,
1789 &api_nh->seg6local_ctx);
8689b25a
HS		 1790 }
1791
c60c1ade 1792 if (CHECK_FLAG(api_nh->flags, ZAPI_NEXTHOP_FLAG_SEG6)
76fb7ae4
HS		 1793 && api_nh->type != NEXTHOP_TYPE_BLACKHOLE) {
1794 if (IS_ZEBRA_DEBUG_RECV)
1795 zlog_debug("%s: adding seg6", __func__);
1796
eab0f8f0 1797 nexthop_add_srv6_seg6(nexthop, &api_nh->seg6_segs);
76fb7ae4
HS		 1798 }
1799
1d48702e
MS		 1800 if (IS_ZEBRA_DEBUG_RECV) {
1801 labelbuf[0] = '\0';
1802 nhbuf[0] = '\0';
1803
1804 nexthop2str(nexthop, nhbuf, sizeof(nhbuf));
1805
1806 if (nexthop->nh_label &&
1807 nexthop->nh_label->num_labels > 0) {
1808 mpls_label2str(nexthop->nh_label->num_labels,
1809 nexthop->nh_label->label,
1810 labelbuf, sizeof(labelbuf),
1811 false);
1812 }
1813
1814 zlog_debug("%s: nh=%s, vrf_id=%d %s",
1815 __func__, nhbuf, api_nh->vrf_id, labelbuf);
1816 }
1817
66c28560 1818 if (ng) {
f70da2a3 1819 /* Add new nexthop to temporary list. This list is
ff9aca4f
SW		 1820 * canonicalized - sorted - so that it can be hashed
1821 * later in route processing. We expect that the sender
1822 * has sent the list sorted, and the zapi client api
1823 * attempts to enforce that, so this should be
1824 * inexpensive - but it is necessary to support shared
1825 * nexthop-groups.
f70da2a3
DS		 1826 */
1827 nexthop_group_add_sorted(ng, nexthop);
1828 }
1829 if (bnhg) {
ff9aca4f
SW		 1830 /* Note that the order of the backup nexthops is
1831 * significant, so we don't sort this list as we do the
1832 * primary nexthops, we just append.
f70da2a3
DS		 1833 */
1834 if (last_nh)
1835 NEXTHOP_APPEND(last_nh, nexthop);
1836 else
1837 bnhg->nhe->nhg.nexthop = nexthop;
1838
1839 last_nh = nexthop;
1840 }
62e46303
MS		 1841 }
1842
66c28560
SW		 1843
1844 /* succesfully read, set caller pointers now */
1845 if (png)
1846 *png = ng;
1847
1848 if (pbnhg)
1849 *pbnhg = bnhg;
1850
f70da2a3
DS		 1851 return true;
1852}
62e46303 1853
5898ce6f 1854static int zapi_nhg_decode(struct stream *s, int cmd, struct zapi_nhg *api_nhg)
21735352
SW		 1855{
1856 uint16_t i;
1857 struct zapi_nexthop *znh;
1858
1859 STREAM_GETW(s, api_nhg->proto);
1860 STREAM_GETL(s, api_nhg->id);
1861
1862 if (cmd == ZEBRA_NHG_DEL)
1863 goto done;
1864
1865 /* Nexthops */
1866 STREAM_GETW(s, api_nhg->nexthop_num);
1867
1868 if (zserv_nexthop_num_warn(__func__, NULL, api_nhg->nexthop_num))
1869 return -1;
1870
1871 if (api_nhg->nexthop_num <= 0) {
1872 flog_warn(EC_ZEBRA_NEXTHOP_CREATION_FAILED,
1873 "%s: No nexthops sent", __func__);
1874 return -1;
1875 }
1876
1877 for (i = 0; i < api_nhg->nexthop_num; i++) {
1878 znh = &((api_nhg->nexthops)[i]);
1879
1880 if (zapi_nexthop_decode(s, znh, 0, 0) != 0) {
1881 flog_warn(EC_ZEBRA_NEXTHOP_CREATION_FAILED,
1882 "%s: Nexthop creation failed", __func__);
1883 return -1;
1884 }
1885 }
1886
1887 /* Backup Nexthops */
1888 STREAM_GETW(s, api_nhg->backup_nexthop_num);
1889
1890 if (zserv_nexthop_num_warn(__func__, NULL, api_nhg->backup_nexthop_num))
1891 return -1;
1892
1893 for (i = 0; i < api_nhg->backup_nexthop_num; i++) {
1894 znh = &((api_nhg->backup_nexthops)[i]);
1895
1896 if (zapi_nexthop_decode(s, znh, 0, 0) != 0) {
1897 flog_warn(EC_ZEBRA_NEXTHOP_CREATION_FAILED,
1898 "%s: Backup Nexthop creation failed",
1899 __func__);
1900 return -1;
1901 }
1902 }
1903
1904done:
1905 return 0;
1906
1907stream_failure:
1908 flog_warn(
1909 EC_ZEBRA_NEXTHOP_CREATION_FAILED,
1910 "%s: Nexthop Group decode failed with some sort of stream read failure",
1911 __func__);
1912 return -1;
1913}
1914
2f35a820
DS		 1915static void zread_nhg_del(ZAPI_HANDLER_ARGS)
1916{
21735352
SW		 1917 struct stream *s;
1918 struct zapi_nhg api_nhg = {};
0885b1e3 1919 struct nhg_hash_entry *nhe;
2f35a820 1920
21735352
SW		 1921 s = msg;
1922 if (zapi_nhg_decode(s, hdr->command, &api_nhg) < 0) {
1923 if (IS_ZEBRA_DEBUG_RECV)
1924 zlog_debug("%s: Unable to decode zapi_nhg sent",
1925 __func__);
1926 return;
1927 }
2f35a820
DS		 1928
1929 /*
1930 * Delete the received nhg id
2f35a820 1931 */
21735352 1932 nhe = zebra_nhg_proto_del(api_nhg.id, api_nhg.proto);
0885b1e3
SW		 1933
1934 if (nhe) {
6fae63d2 1935 zebra_nhg_decrement_ref(nhe);
ee94437e
MS		 1936 zsend_nhg_notify(api_nhg.proto, client->instance,
1937 client->session_id, api_nhg.id,
1938 ZAPI_NHG_REMOVED);
0885b1e3 1939 } else
ee94437e
MS		 1940 zsend_nhg_notify(api_nhg.proto, client->instance,
1941 client->session_id, api_nhg.id,
1942 ZAPI_NHG_REMOVE_FAIL);
2f35a820
DS		 1943}
1944
8b2d3a0f 1945static void zread_nhg_add(ZAPI_HANDLER_ARGS)
2f35a820
DS		 1946{
1947 struct stream *s;
21735352 1948 struct zapi_nhg api_nhg = {};
2f35a820 1949 struct nexthop_group *nhg = NULL;
21735352 1950 struct nhg_backup_info *bnhg = NULL;
0885b1e3 1951 struct nhg_hash_entry *nhe;
2f35a820 1952
2f35a820 1953 s = msg;
21735352
SW		 1954 if (zapi_nhg_decode(s, hdr->command, &api_nhg) < 0) {
1955 if (IS_ZEBRA_DEBUG_RECV)
1956 zlog_debug("%s: Unable to decode zapi_nhg sent",
1957 __func__);
68671c74
SW		 1958 return;
1959 }
1960
21735352
SW		 1961 if ((!zapi_read_nexthops(client, NULL, api_nhg.nexthops, 0, 0,
1962 api_nhg.nexthop_num,
1963 api_nhg.backup_nexthop_num, &nhg, NULL))
1964 || (!zapi_read_nexthops(client, NULL, api_nhg.backup_nexthops, 0, 0,
1965 api_nhg.backup_nexthop_num,
1966 api_nhg.backup_nexthop_num, NULL, &bnhg))) {
2f35a820 1967
2f35a820 1968 flog_warn(EC_ZEBRA_NEXTHOP_CREATION_FAILED,
ff9aca4f 1969 "%s: Nexthop Group Creation failed", __func__);
fd99142a
MS		 1970
1971 /* Free any local allocations */
1972 nexthop_group_delete(&nhg);
1973 zebra_nhg_backup_free(&bnhg);
1974
2f35a820
DS		 1975 return;
1976 }
0885b1e3 1977
04bec7b2
MS		 1978 /* Create a temporary nhe */
1979 nhe = zebra_nhg_alloc();
1980 nhe->id = api_nhg.id;
1981 nhe->type = api_nhg.proto;
1982 nhe->zapi_instance = client->instance;
1983 nhe->zapi_session = client->session_id;
0885b1e3 1984
04bec7b2
MS		 1985 /* Take over the list(s) of nexthops */
1986 nhe->nhg.nexthop = nhg->nexthop;
1987 nhg->nexthop = NULL;
1988
1989 if (bnhg) {
1990 nhe->backup_info = bnhg;
1991 bnhg = NULL;
1992 }
0885b1e3
SW		 1993
1994 /*
1995 * TODO:
1996 * Assume fully resolved for now and install.
0885b1e3
SW		 1997 * Resolution is going to need some more work.
1998 */
ee94437e 1999
04bec7b2
MS		 2000 /* Enqueue to workqueue for processing */
2001 rib_queue_nhe_add(nhe);
2002
2003 /* Free any local allocations */
2004 nexthop_group_delete(&nhg);
2005 zebra_nhg_backup_free(&bnhg);
2006
2f35a820
DS		 2007}
2008
f70da2a3
DS		 2009static void zread_route_add(ZAPI_HANDLER_ARGS)
2010{
2011 struct stream *s;
2012 struct zapi_route api;
2013 afi_t afi;
2014 struct prefix_ipv6 *src_p = NULL;
2015 struct route_entry *re;
2016 struct nexthop_group *ng = NULL;
2017 struct nhg_backup_info *bnhg = NULL;
2018 int ret;
2019 vrf_id_t vrf_id;
2020 struct nhg_hash_entry nhe;
0eb97b86 2021
f70da2a3
DS		 2022 s = msg;
2023 if (zapi_route_decode(s, &api) < 0) {
2024 if (IS_ZEBRA_DEBUG_RECV)
2025 zlog_debug("%s: Unable to decode zapi_route sent",
2026 __func__);
2027 return;
2028 }
1d48702e 2029
f70da2a3 2030 vrf_id = zvrf_id(zvrf);
31f937fb 2031
2dbe669b
DA		 2032 if (IS_ZEBRA_DEBUG_RECV)
2033 zlog_debug("%s: p=(%u:%u)%pFX, msg flags=0x%x, flags=0x%x",
2034 __func__, vrf_id, api.tableid, &api.prefix,
f70da2a3 2035 (int)api.message, api.flags);
0eb97b86 2036
f70da2a3
DS		 2037 /* Allocate new route. */
2038 re = XCALLOC(MTYPE_RE, sizeof(struct route_entry));
2039 re->type = api.type;
2040 re->instance = api.instance;
2041 re->flags = api.flags;
2042 re->uptime = monotime(NULL);
2043 re->vrf_id = vrf_id;
1d48702e 2044
f70da2a3
DS		 2045 if (api.tableid)
2046 re->table = api.tableid;
2047 else
2048 re->table = zvrf->table_id;
1d48702e 2049
27141ea9
DS		 2050 if (!CHECK_FLAG(api.message, ZAPI_MESSAGE_NHG)
2051 && (!CHECK_FLAG(api.message, ZAPI_MESSAGE_NEXTHOP)
2052 || api.nexthop_num == 0)) {
ff9aca4f
SW		 2053 flog_warn(
2054 EC_ZEBRA_RX_ROUTE_NO_NEXTHOPS,
2055 "%s: received a route without nexthops for prefix %pFX from client %s",
2056 __func__, &api.prefix,
2057 zebra_route_string(client->proto));
1d48702e 2058
f70da2a3
DS		 2059 XFREE(MTYPE_RE, re);
2060 return;
2061 }
1d48702e 2062
f70da2a3 2063 /* Report misuse of the backup flag */
ff9aca4f
SW		 2064 if (CHECK_FLAG(api.message, ZAPI_MESSAGE_BACKUP_NEXTHOPS)
2065 && api.backup_nexthop_num == 0) {
f70da2a3 2066 if (IS_ZEBRA_DEBUG_RECV || IS_ZEBRA_DEBUG_EVENT)
ff9aca4f
SW		 2067 zlog_debug(
2068 "%s: client %s: BACKUP flag set but no backup nexthops, prefix %pFX",
2069 __func__, zebra_route_string(client->proto),
2070 &api.prefix);
f70da2a3 2071 }
62e46303 2072
50db3f2f
SW		 2073 if (CHECK_FLAG(api.message, ZAPI_MESSAGE_NHG))
2074 re->nhe_id = api.nhgid;
2075
2076 if (!re->nhe_id
2b5ecd4c
SW		 2077 && (!zapi_read_nexthops(client, &api.prefix, api.nexthops,
2078 api.flags, api.message, api.nexthop_num,
2079 api.backup_nexthop_num, &ng, NULL)
2080 || !zapi_read_nexthops(client, &api.prefix, api.backup_nexthops,
2081 api.flags, api.message,
2082 api.backup_nexthop_num,
2083 api.backup_nexthop_num, NULL, &bnhg))) {
21735352
SW		 2084
2085 nexthop_group_delete(&ng);
2086 zebra_nhg_backup_free(&bnhg);
f70da2a3
DS		 2087 XFREE(MTYPE_RE, re);
2088 return;
7fcb24bb
RW		 2089 }
2090
bf094f69
QY		 2091 if (CHECK_FLAG(api.message, ZAPI_MESSAGE_DISTANCE))
2092 re->distance = api.distance;
2093 if (CHECK_FLAG(api.message, ZAPI_MESSAGE_METRIC))
2094 re->metric = api.metric;
2095 if (CHECK_FLAG(api.message, ZAPI_MESSAGE_TAG))
2096 re->tag = api.tag;
2097 if (CHECK_FLAG(api.message, ZAPI_MESSAGE_MTU))
2098 re->mtu = api.mtu;
2099
a29a6001 2100 if (CHECK_FLAG(api.message, ZAPI_MESSAGE_OPAQUE)) {
b86c1f4f
MS		 2101 re->opaque =
2102 XMALLOC(MTYPE_RE_OPAQUE,
2103 sizeof(struct re_opaque) + api.opaque.length);
a29a6001
DS		 2104 re->opaque->length = api.opaque.length;
2105 memcpy(re->opaque->data, api.opaque.data, re->opaque->length);
2106 }
2107
bf094f69
QY		 2108 afi = family2afi(api.prefix.family);
2109 if (afi != AFI_IP6 && CHECK_FLAG(api.message, ZAPI_MESSAGE_SRCPFX)) {
e914ccbe 2110 flog_warn(EC_ZEBRA_RX_SRCDEST_WRONG_AFI,
9df414fe 2111 "%s: Received SRC Prefix but afi is not v6",
15569c58 2112 __func__);
0eb97b86 2113 nexthop_group_delete(&ng);
1d48702e 2114 zebra_nhg_backup_free(&bnhg);
b86c1f4f 2115 XFREE(MTYPE_RE_OPAQUE, re->opaque);
bf094f69
QY		 2116 XFREE(MTYPE_RE, re);
2117 return;
2118 }
2119 if (CHECK_FLAG(api.message, ZAPI_MESSAGE_SRCPFX))
2120 src_p = &api.src_prefix;
2121
5e7939a5
DS		 2122 if (api.safi != SAFI_UNICAST && api.safi != SAFI_MULTICAST) {
2123 flog_warn(EC_LIB_ZAPI_MISSMATCH,
2124 "%s: Received safi: %d but we can only accept UNICAST or MULTICAST",
2125 __func__, api.safi);
2126 nexthop_group_delete(&ng);
1d48702e 2127 zebra_nhg_backup_free(&bnhg);
b86c1f4f 2128 XFREE(MTYPE_RE_OPAQUE, re->opaque);
5e7939a5
DS		 2129 XFREE(MTYPE_RE, re);
2130 return;
2131 }
1d48702e 2132
50db3f2f
SW		 2133 /*
2134 * If we have an ID, this proto owns the NHG it sent along with the
2135 * route, so we just send the ID into rib code with it.
2136 *
2137 * Havent figured out how to handle backup NHs with this yet, so lets
2138 * keep that separate.
2139 * Include backup info with the route. We use a temporary nhe here;
377e29f7
MS		 2140 * if this is a new/unknown nhe, a new copy will be allocated
2141 * and stored.
2142 */
50db3f2f
SW		 2143 if (!re->nhe_id) {
2144 zebra_nhe_init(&nhe, afi, ng->nexthop);
2145 nhe.nhg.nexthop = ng->nexthop;
2146 nhe.backup_info = bnhg;
2147 }
1d48702e 2148 ret = rib_add_multipath_nhe(afi, api.safi, &api.prefix, src_p,
c6eee91f 2149 re, &nhe, false);
bf094f69 2150
f94a7703
DS		 2151 /*
2152 * rib_add_multipath_nhe only fails in a couple spots
2153 * and in those spots we have not freed memory
2154 */
38c764dd
DS		 2155 if (ret == -1) {
2156 client->error_cnt++;
b86c1f4f 2157 XFREE(MTYPE_RE_OPAQUE, re->opaque);
f94a7703 2158 XFREE(MTYPE_RE, re);
38c764dd 2159 }
f94a7703 2160
377e29f7
MS		 2161 /* At this point, these allocations are not needed: 're' has been
2162 * retained or freed, and if 're' still exists, it is using
2163 * a reference to a shared group object.
2164 */
2165 nexthop_group_delete(&ng);
2166 if (bnhg)
2167 zebra_nhg_backup_free(&bnhg);
2168
bf094f69
QY		 2169 /* Stats */
2170 switch (api.prefix.family) {
2171 case AF_INET:
38c764dd 2172 if (ret == 0)
bf094f69 2173 client->v4_route_add_cnt++;
38c764dd 2174 else if (ret == 1)
bf094f69
QY		 2175 client->v4_route_upd8_cnt++;
2176 break;
2177 case AF_INET6:
38c764dd 2178 if (ret == 0)
bf094f69 2179 client->v6_route_add_cnt++;
38c764dd 2180 else if (ret == 1)
bf094f69
QY		 2181 client->v6_route_upd8_cnt++;
2182 break;
2183 }
2184}
2185
b86c1f4f 2186void zapi_re_opaque_free(struct re_opaque *opaque)
224ccf29 2187{
b86c1f4f 2188 XFREE(MTYPE_RE_OPAQUE, opaque);
224ccf29
DL		 2189}
2190
bf094f69
QY		 2191static void zread_route_del(ZAPI_HANDLER_ARGS)
2192{
2193 struct stream *s;
2194 struct zapi_route api;
2195 afi_t afi;
2196 struct prefix_ipv6 *src_p = NULL;
2197 uint32_t table_id;
2198
2199 s = msg;
2200 if (zapi_route_decode(s, &api) < 0)
2201 return;
2202
2203 afi = family2afi(api.prefix.family);
2204 if (afi != AFI_IP6 && CHECK_FLAG(api.message, ZAPI_MESSAGE_SRCPFX)) {
e914ccbe 2205 flog_warn(EC_ZEBRA_RX_SRCDEST_WRONG_AFI,
9df414fe 2206 "%s: Received a src prefix while afi is not v6",
15569c58 2207 __func__);
bf094f69
QY		 2208 return;
2209 }
2210 if (CHECK_FLAG(api.message, ZAPI_MESSAGE_SRCPFX))
2211 src_p = &api.src_prefix;
2212
60ca3cc2 2213 if (api.tableid)
bf094f69
QY		 2214 table_id = api.tableid;
2215 else
2216 table_id = zvrf->table_id;
2217
2dbe669b
DA		 2218 if (IS_ZEBRA_DEBUG_RECV)
2219 zlog_debug("%s: p=(%u:%u)%pFX, msg flags=0x%x, flags=0x%x",
2220 __func__, zvrf_id(zvrf), table_id, &api.prefix,
c2c02b76 2221 (int)api.message, api.flags);
c2c02b76 2222
bf094f69 2223 rib_delete(afi, api.safi, zvrf_id(zvrf), api.type, api.instance,
bc541126 2224 api.flags, &api.prefix, src_p, NULL, 0, table_id, api.metric,
3ceae22b 2225 api.distance, false);
bf094f69
QY		 2226
2227 /* Stats */
2228 switch (api.prefix.family) {
2229 case AF_INET:
2230 client->v4_route_del_cnt++;
2231 break;
2232 case AF_INET6:
2233 client->v6_route_del_cnt++;
2234 break;
2235 }
2236}
2237
bf094f69 2238/* MRIB Nexthop lookup for IPv4. */
34ee41c6 2239static void zread_nexthop_lookup_mrib(ZAPI_HANDLER_ARGS)
bf094f69 2240{
34ee41c6
DL		 2241 struct ipaddr addr;
2242 struct route_entry *re = NULL;
2243
2244 STREAM_GET_IPADDR(msg, &addr);
2245
2246 switch (addr.ipa_type) {
2247 case IPADDR_V4:
2248 re = rib_match_ipv4_multicast(zvrf_id(zvrf), addr.ipaddr_v4,
2249 NULL);
2250 break;
2251 case IPADDR_V6:
2252 re = rib_match_ipv6_multicast(zvrf_id(zvrf), addr.ipaddr_v6,
2253 NULL);
2254 break;
2255 case IPADDR_NONE:
2256 /* ??? */
2257 goto stream_failure;
2258 }
bf094f69 2259
34ee41c6 2260 zsend_nexthop_lookup_mrib(client, &addr, re, zvrf);
bf094f69
QY		 2261
2262stream_failure:
2263 return;
2264}
2265
bf094f69
QY		 2266/* Register zebra server router-id information. Send current router-id */
2267static void zread_router_id_add(ZAPI_HANDLER_ARGS)
2268{
98a3fb0a 2269 afi_t afi;
bf094f69 2270 struct prefix p;
01141358 2271 struct prefix zero;
bf094f69 2272
98a3fb0a
SM		 2273 STREAM_GETW(msg, afi);
2274
2275 if (afi <= AFI_UNSPEC || afi >= AFI_MAX) {
2276 zlog_warn(
2277 "Invalid AFI %u while registering for router ID notifications",
2278 afi);
2279 goto stream_failure;
2280 }
2281
bf094f69 2282 /* Router-id information is needed. */
98a3fb0a 2283 vrf_bitmap_set(client->ridinfo[afi], zvrf_id(zvrf));
bf094f69 2284
98a3fb0a 2285 router_id_get(afi, &p, zvrf);
bf094f69 2286
01141358
DS		 2287 /*
2288 * If we have not officially setup a router-id let's not
2289 * tell the upper level protocol about it yet.
2290 */
2291 memset(&zero, 0, sizeof(zero));
2292 if ((p.family == AF_INET && p.u.prefix4.s_addr == INADDR_ANY)
2293 || (p.family == AF_INET6
2294 && memcmp(&p.u.prefix6, &zero.u.prefix6,
2295 sizeof(struct in6_addr))
2296 == 0))
2297 return;
2298
98a3fb0a
SM		 2299 zsend_router_id_update(client, afi, &p, zvrf_id(zvrf));
2300
2301stream_failure:
2302 return;
bf094f69
QY		 2303}
2304
2305/* Unregister zebra server router-id information. */
2306static void zread_router_id_delete(ZAPI_HANDLER_ARGS)
2307{
98a3fb0a
SM		 2308 afi_t afi;
2309
2310 STREAM_GETW(msg, afi);
2311
2312 if (afi <= AFI_UNSPEC || afi >= AFI_MAX) {
2313 zlog_warn(
2314 "Invalid AFI %u while unregistering from router ID notifications",
2315 afi);
2316 goto stream_failure;
2317 }
2318
2319 vrf_bitmap_unset(client->ridinfo[afi], zvrf_id(zvrf));
2320
2321stream_failure:
2322 return;
bf094f69
QY		 2323}
2324
2325static void zsend_capabilities(struct zserv *client, struct zebra_vrf *zvrf)
2326{
2327 struct stream *s = stream_new(ZEBRA_MAX_PACKET_SIZ);
2328
2329 zclient_create_header(s, ZEBRA_CAPABILITIES, zvrf->vrf->vrf_id);
bb6b7f79 2330 stream_putl(s, vrf_get_backend());
bf094f69 2331 stream_putc(s, mpls_enabled);
b3f2b590 2332 stream_putl(s, zrouter.multipath_num);
02c0866d 2333 stream_putc(s, zebra_mlag_get_role());
bf094f69
QY		 2334
2335 stream_putw_at(s, 0, stream_get_endp(s));
21ccc0cf 2336 zserv_send_message(client, s);
bf094f69
QY		 2337}
2338
b120fe3b
DS		 2339void zsend_capabilities_all_clients(void)
2340{
2341 struct listnode *node, *nnode;
2342 struct zebra_vrf *zvrf;
2343 struct zserv *client;
2344
2345 zvrf = vrf_info_lookup(VRF_DEFAULT);
2346 for (ALL_LIST_ELEMENTS(zrouter.client_list, node, nnode, client)) {
17da84a4
KS		 2347 /* Do not send unsolicited messages to synchronous clients. */
2348 if (client->synchronous)
2349 continue;
2350
b120fe3b
DS		 2351 zsend_capabilities(client, zvrf);
2352 }
2353}
2354
bf094f69
QY		 2355/* Tie up route-type and client->sock */
2356static void zread_hello(ZAPI_HANDLER_ARGS)
2357{
2358 /* type of protocol (lib/zebra.h) */
2359 uint8_t proto;
2360 unsigned short instance;
2361 uint8_t notify;
17da84a4 2362 uint8_t synchronous;
4e0b5b31 2363 uint32_t session_id;
bf094f69
QY		 2364
2365 STREAM_GETC(msg, proto);
2366 STREAM_GETW(msg, instance);
4e0b5b31 2367 STREAM_GETL(msg, session_id);
bf094f69 2368 STREAM_GETC(msg, notify);
17da84a4 2369 STREAM_GETC(msg, synchronous);
bf094f69
QY		 2370 if (notify)
2371 client->notify_owner = true;
2372
17da84a4
KS		 2373 if (synchronous)
2374 client->synchronous = true;
2375
bf094f69 2376 /* accept only dynamic routing protocols */
f23cbcda 2377 if ((proto < ZEBRA_ROUTE_MAX) && (proto > ZEBRA_ROUTE_CONNECT)) {
bf094f69
QY		 2378 zlog_notice(
2379 "client %d says hello and bids fair to announce only %s routes vrf=%u",
2380 client->sock, zebra_route_string(proto),
2381 zvrf->vrf->vrf_id);
2382 if (instance)
2383 zlog_notice("client protocol instance %d", instance);
2384
2385 client->proto = proto;
2386 client->instance = instance;
4e0b5b31 2387 client->session_id = session_id;
6f4aee61
S		 2388
2389 /* Graceful restart processing for client connect */
2390 zebra_gr_client_reconnect(client);
bf094f69
QY		 2391 }
2392
17da84a4
KS		 2393 if (!client->synchronous) {
2394 zsend_capabilities(client, zvrf);
2395 zebra_vrf_update_all(client);
2396 }
bf094f69
QY		 2397stream_failure:
2398 return;
2399}
2400
2401/* Unregister all information in a VRF. */
2402static void zread_vrf_unregister(ZAPI_HANDLER_ARGS)
2403{
2404 int i;
2405 afi_t afi;
2406
49db7a7b 2407 for (afi = AFI_IP; afi < AFI_MAX; afi++) {
bf094f69
QY		 2408 for (i = 0; i < ZEBRA_ROUTE_MAX; i++)
2409 vrf_bitmap_unset(client->redist[afi][i], zvrf_id(zvrf));
49db7a7b 2410 vrf_bitmap_unset(client->redist_default[afi], zvrf_id(zvrf));
98a3fb0a 2411 vrf_bitmap_unset(client->ridinfo[afi], zvrf_id(zvrf));
7723e8d3 2412 vrf_bitmap_unset(client->nhrp_neighinfo[afi], zvrf_id(zvrf));
49db7a7b 2413 }
bf094f69
QY		 2414}
2415
ff8d3c2d
MS		 2416/*
2417 * Validate incoming zapi mpls lsp / labels message
2418 */
2419static int zapi_labels_validate(const struct zapi_labels *zl)
2420{
2421 int ret = -1;
2422 int i, j, idx;
2423 uint32_t bits[8];
2424 uint32_t ival;
2425 const struct zapi_nexthop *znh;
2426
2427 /* Validate backup info: no duplicates for a single primary */
2428 if (zl->backup_nexthop_num == 0) {
2429 ret = 0;
2430 goto done;
2431 }
2432
2433 for (j = 0; j < zl->nexthop_num; j++) {
2434 znh = &zl->nexthops[j];
2435
2436 memset(bits, 0, sizeof(bits));
2437
2438 for (i = 0; i < znh->backup_num; i++) {
2439 idx = znh->backup_idx[i] / 32;
2440
2441 ival = 1 << znh->backup_idx[i] % 32;
2442
2443 /* Check whether value is already used */
2444 if (ival & bits[idx]) {
2445 /* Fail */
2446
2447 if (IS_ZEBRA_DEBUG_RECV)
2448 zlog_debug("%s: invalid zapi mpls message: duplicate backup nexthop index %d",
2449 __func__,
2450 znh->backup_idx[i]);
2451 goto done;
2452 }
2453
2454 /* Mark index value */
2455 bits[idx] |= ival;
2456 }
2457 }
2458
2459 ret = 0;
2460
2461done:
2462
2463 return ret;
2464}
2465
ea6b290b
RW		 2466/*
2467 * Handle request to create an MPLS LSP.
2468 *
2469 * A single message can fully specify an LSP with multiple nexthops.
2470 *
2471 * When the optional ZAPI_LABELS_FTN flag is set, the specified FEC (route) is
2472 * updated to use the received label(s).
2473 */
2474static void zread_mpls_labels_add(ZAPI_HANDLER_ARGS)
bf094f69
QY		 2475{
2476 struct stream *s;
bad6b0e7 2477 struct zapi_labels zl;
f2e7f4eb 2478 int ret;
bf094f69
QY		 2479
2480 /* Get input stream. */
2481 s = msg;
bad6b0e7
RW		 2482 if (zapi_labels_decode(s, &zl) < 0) {
2483 if (IS_ZEBRA_DEBUG_RECV)
2484 zlog_debug("%s: Unable to decode zapi_labels sent",
15569c58 2485 __func__);
bf094f69
QY		 2486 return;
2487 }
bf094f69 2488
bf094f69
QY		 2489 if (!mpls_enabled)
2490 return;
2491
ff8d3c2d
MS		 2492 /* Validate; will debug on failure */
2493 if (zapi_labels_validate(&zl) < 0)
2494 return;
2495
f2e7f4eb
MS		 2496 ret = mpls_zapi_labels_process(true, zvrf, &zl);
2497 if (ret < 0) {
2498 if (IS_ZEBRA_DEBUG_RECV)
2499 zlog_debug("%s: Error processing zapi request",
2500 __func__);
ea6b290b
RW		 2501 }
2502}
2503
2504/*
2505 * Handle request to delete an MPLS LSP.
2506 *
2507 * An LSP is identified by its type and local label. When the received message
2508 * doesn't contain any nexthop, the whole LSP is deleted. Otherwise, only the
2509 * listed LSP nexthops (aka NHLFEs) are deleted.
2510 *
2511 * When the optional ZAPI_LABELS_FTN flag is set, the labels of the specified
2512 * FEC (route) nexthops are deleted.
2513 */
2514static void zread_mpls_labels_delete(ZAPI_HANDLER_ARGS)
2515{
2516 struct stream *s;
2517 struct zapi_labels zl;
f2e7f4eb 2518 int ret;
ea6b290b
RW		 2519
2520 /* Get input stream. */
2521 s = msg;
2522 if (zapi_labels_decode(s, &zl) < 0) {
2523 if (IS_ZEBRA_DEBUG_RECV)
2524 zlog_debug("%s: Unable to decode zapi_labels sent",
15569c58 2525 __func__);
ea6b290b
RW		 2526 return;
2527 }
2528
2529 if (!mpls_enabled)
2530 return;
2531
2532 if (zl.nexthop_num > 0) {
f2e7f4eb
MS		 2533 ret = mpls_zapi_labels_process(false /*delete*/, zvrf, &zl);
2534 if (ret < 0) {
2535 if (IS_ZEBRA_DEBUG_RECV)
2536 zlog_debug("%s: Error processing zapi request",
2537 __func__);
ea6b290b
RW		 2538 }
2539 } else {
2540 mpls_lsp_uninstall_all_vrf(zvrf, zl.type, zl.local_label);
2541
b3c49d0e 2542 if (CHECK_FLAG(zl.message, ZAPI_LABELS_FTN))
ea6b290b
RW		 2543 mpls_ftn_uninstall(zvrf, zl.type, &zl.route.prefix,
2544 zl.route.type, zl.route.instance);
2545 }
2546}
2547
2548/*
2549 * Handle request to add an MPLS LSP or change an existing one.
2550 *
2551 * A single message can fully specify an LSP with multiple nexthops.
2552 *
2553 * When the optional ZAPI_LABELS_FTN flag is set, the specified FEC (route) is
2554 * updated to use the received label(s).
2555 *
2556 * NOTE: zebra will use route replace semantics (make-before-break) to update
2557 * the LSP in the forwarding plane if that's supported by the underlying
2558 * platform.
2559 */
2560static void zread_mpls_labels_replace(ZAPI_HANDLER_ARGS)
2561{
2562 struct stream *s;
2563 struct zapi_labels zl;
2564
2565 /* Get input stream. */
2566 s = msg;
2567 if (zapi_labels_decode(s, &zl) < 0) {
2568 if (IS_ZEBRA_DEBUG_RECV)
2569 zlog_debug("%s: Unable to decode zapi_labels sent",
15569c58 2570 __func__);
ea6b290b
RW		 2571 return;
2572 }
2573
2574 if (!mpls_enabled)
2575 return;
2576
ff8d3c2d
MS		 2577 /* Validate; will debug on failure */
2578 if (zapi_labels_validate(&zl) < 0)
2579 return;
2580
f2e7f4eb
MS		 2581 /* This removes everything, then re-adds from the client's
2582 * zapi message. Since the LSP will be processed later, on this
2583 * this same pthread, all of the changes will 'appear' at once.
2584 */
ea6b290b
RW		 2585 mpls_lsp_uninstall_all_vrf(zvrf, zl.type, zl.local_label);
2586 if (CHECK_FLAG(zl.message, ZAPI_LABELS_FTN))
2587 mpls_ftn_uninstall(zvrf, zl.type, &zl.route.prefix,
2588 zl.route.type, zl.route.instance);
2589
f2e7f4eb 2590 mpls_zapi_labels_process(true, zvrf, &zl);
bf094f69
QY		 2591}
2592
31f937fb
SM		 2593static void zread_sr_policy_set(ZAPI_HANDLER_ARGS)
2594{
2595 struct stream *s;
2596 struct zapi_sr_policy zp;
2597 struct zapi_srte_tunnel *zt;
2598 struct zebra_sr_policy *policy;
2599
2600 /* Get input stream. */
2601 s = msg;
2602 if (zapi_sr_policy_decode(s, &zp) < 0) {
2603 if (IS_ZEBRA_DEBUG_RECV)
2604 zlog_debug("%s: Unable to decode zapi_sr_policy sent",
7d7be47e 2605 __func__);
31f937fb
SM		 2606 return;
2607 }
2608 zt = &zp.segment_list;
2609 if (zt->label_num < 1) {
2610 if (IS_ZEBRA_DEBUG_RECV)
2611 zlog_debug(
2612 "%s: SR-TE tunnel must contain at least one label",
7d7be47e 2613 __func__);
31f937fb
SM		 2614 return;
2615 }
2616
2617 if (!mpls_enabled)
2618 return;
2619
2620 policy = zebra_sr_policy_find(zp.color, &zp.endpoint);
2621 if (!policy)
2622 policy = zebra_sr_policy_add(zp.color, &zp.endpoint, zp.name);
2623 /* TODO: per-VRF list of SR-TE policies. */
2624 policy->zvrf = zvrf;
2625
2626 zebra_sr_policy_validate(policy, &zp.segment_list);
2627}
2628
2629static void zread_sr_policy_delete(ZAPI_HANDLER_ARGS)
2630{
2631 struct stream *s;
2632 struct zapi_sr_policy zp;
2633 struct zebra_sr_policy *policy;
2634
2635 /* Get input stream. */
2636 s = msg;
2637 if (zapi_sr_policy_decode(s, &zp) < 0) {
2638 if (IS_ZEBRA_DEBUG_RECV)
2639 zlog_debug("%s: Unable to decode zapi_sr_policy sent",
7d7be47e 2640 __func__);
31f937fb
SM		 2641 return;
2642 }
2643
2644 if (!mpls_enabled)
2645 return;
2646
2647 policy = zebra_sr_policy_find(zp.color, &zp.endpoint);
2648 if (!policy) {
2649 if (IS_ZEBRA_DEBUG_RECV)
7d7be47e 2650 zlog_debug("%s: Unable to find SR-TE policy", __func__);
31f937fb
SM		 2651 return;
2652 }
2653
2654 zebra_sr_policy_del(policy);
2655}
2656
2657int zsend_sr_policy_notify_status(uint32_t color, struct ipaddr *endpoint,
2658 char *name, int status)
2659{
2660 struct zserv *client;
2661 struct stream *s;
2662
2663 client = zserv_find_client(ZEBRA_ROUTE_SRTE, 0);
2664 if (!client) {
2665 if (IS_ZEBRA_DEBUG_PACKET)
2666 zlog_debug(
2667 "Not notifying pathd about policy %s"
2668 " status change to %d",
2669 name, status);
2670 return 0;
2671 }
2672
2673 if (IS_ZEBRA_DEBUG_PACKET)
2674 zlog_debug(
2675 "Notifying pathd about policy %s status change"
2676 " to %d",
2677 name, status);
2678
2679 s = stream_new(ZEBRA_MAX_PACKET_SIZ);
2680 stream_reset(s);
2681
2682 zclient_create_header(s, ZEBRA_SR_POLICY_NOTIFY_STATUS, VRF_DEFAULT);
2683 stream_putl(s, color);
2684 stream_put_ipaddr(s, endpoint);
2685 stream_write(s, name, SRTE_POLICY_NAME_MAX_LENGTH);
2686 stream_putl(s, status);
2687
2688 stream_putw_at(s, 0, stream_get_endp(s));
2689
2690 return zserv_send_message(client, s);
2691}
2692
581e797e
KS		 2693/* Send client close notify to client */
2694int zsend_client_close_notify(struct zserv *client, struct zserv *closed_client)
2695{
2696 struct stream *s = stream_new(ZEBRA_MAX_PACKET_SIZ);
2697
2698 zclient_create_header(s, ZEBRA_CLIENT_CLOSE_NOTIFY, VRF_DEFAULT);
2699
2700 stream_putc(s, closed_client->proto);
2701 stream_putw(s, closed_client->instance);
2702 stream_putl(s, closed_client->session_id);
2703
2704 stream_putw_at(s, 0, stream_get_endp(s));
2705
2706 return zserv_send_message(client, s);
2707}
2708
6e68a084
HS		 2709int zsend_srv6_manager_get_locator_chunk_response(struct zserv *client,
2710 vrf_id_t vrf_id,
2711 struct srv6_locator *loc)
2712{
1bda3e62 2713 struct srv6_locator_chunk chunk = {};
6e68a084
HS		 2714 struct stream *s = stream_new(ZEBRA_MAX_PACKET_SIZ);
2715
ac6a9479
HS		 2716 strlcpy(chunk.locator_name, loc->name, sizeof(chunk.locator_name));
2717 chunk.prefix = loc->prefix;
2718 chunk.block_bits_length = loc->block_bits_length;
2719 chunk.node_bits_length = loc->node_bits_length;
2720 chunk.function_bits_length = loc->function_bits_length;
2721 chunk.argument_bits_length = loc->argument_bits_length;
2722 chunk.keep = 0;
2723 chunk.proto = client->proto;
2724 chunk.instance = client->instance;
6e68a084 2725
ac6a9479
HS		 2726 zclient_create_header(s, ZEBRA_SRV6_MANAGER_GET_LOCATOR_CHUNK, vrf_id);
2727 zapi_srv6_locator_chunk_encode(s, &chunk);
6e68a084 2728 stream_putw_at(s, 0, stream_get_endp(s));
6e68a084
HS		 2729 return zserv_send_message(client, s);
2730}
2731
bf094f69
QY		 2732/* Send response to a table manager connect request to client */
2733static void zread_table_manager_connect(struct zserv *client,
2734 struct stream *msg, vrf_id_t vrf_id)
2735{
2736 struct stream *s;
2737 uint8_t proto;
2738 uint16_t instance;
c479e756 2739 struct vrf *vrf = vrf_lookup_by_id(vrf_id);
bf094f69
QY		 2740
2741 s = msg;
2742
2743 /* Get data. */
2744 STREAM_GETC(s, proto);
2745 STREAM_GETW(s, instance);
2746
2747 /* accept only dynamic routing protocols */
2748 if ((proto >= ZEBRA_ROUTE_MAX) || (proto <= ZEBRA_ROUTE_STATIC)) {
e914ccbe 2749 flog_err(EC_ZEBRA_TM_WRONG_PROTO,
1c50c1c0
QY		 2750 "client %d has wrong protocol %s", client->sock,
2751 zebra_route_string(proto));
bf094f69
QY		 2752 zsend_table_manager_connect_response(client, vrf_id, 1);
2753 return;
2754 }
c479e756
DS		 2755 zlog_notice("client %d with vrf %s(%u) instance %u connected as %s",
2756 client->sock, VRF_LOGNAME(vrf), vrf_id, instance,
2757 zebra_route_string(proto));
bf094f69
QY		 2758 client->proto = proto;
2759 client->instance = instance;
2760
2761 /*
2762 * Release previous labels of same protocol and instance.
2763 * This is done in case it restarted from an unexpected shutdown.
2764 */
453844ab 2765 release_daemon_table_chunks(client);
bf094f69
QY		 2766
2767 zsend_table_manager_connect_response(client, vrf_id, 0);
2768
2769stream_failure:
2770 return;
2771}
2772
2773static void zread_label_manager_connect(struct zserv *client,
2774 struct stream *msg, vrf_id_t vrf_id)
2775{
2776 struct stream *s;
2777 /* type of protocol (lib/zebra.h) */
2778 uint8_t proto;
2779 unsigned short instance;
2780
2781 /* Get input stream. */
2782 s = msg;
2783
2784 /* Get data. */
2785 STREAM_GETC(s, proto);
2786 STREAM_GETW(s, instance);
2787
2788 /* accept only dynamic routing protocols */
2789 if ((proto >= ZEBRA_ROUTE_MAX) || (proto <= ZEBRA_ROUTE_STATIC)) {
e914ccbe 2790 flog_err(EC_ZEBRA_TM_WRONG_PROTO,
1c50c1c0
QY		 2791 "client %d has wrong protocol %s", client->sock,
2792 zebra_route_string(proto));
e11d7c96 2793 zsend_label_manager_connect_response(client, vrf_id, 1);
bf094f69
QY		 2794 return;
2795 }
e11d7c96
EDP		 2796
2797 /* recall proto and instance in this socket */
bf094f69
QY		 2798 client->proto = proto;
2799 client->instance = instance;
2800
e11d7c96 2801 /* call hook for connection using wrapper */
4cebdb9b 2802 lm_client_connect_call(client, vrf_id);
bf094f69
QY		 2803
2804stream_failure:
2805 return;
2806}
2807
2808static void zread_get_label_chunk(struct zserv *client, struct stream *msg,
2809 vrf_id_t vrf_id)
2810{
2811 struct stream *s;
2812 uint8_t keep;
0e3b6a92 2813 uint32_t size, base;
e11d7c96 2814 struct label_manager_chunk *lmc = NULL;
5dffb0e9
FR		 2815 uint8_t proto;
2816 unsigned short instance;
bf094f69
QY		 2817
2818 /* Get input stream. */
2819 s = msg;
2820
2821 /* Get data. */
5dffb0e9
FR		 2822 STREAM_GETC(s, proto);
2823 STREAM_GETW(s, instance);
bf094f69
QY		 2824 STREAM_GETC(s, keep);
2825 STREAM_GETL(s, size);
0e3b6a92 2826 STREAM_GETL(s, base);
bf094f69 2827
4cebdb9b
MS		 2828 assert(proto == client->proto && instance == client->instance);
2829
e11d7c96 2830 /* call hook to get a chunk using wrapper */
4cebdb9b 2831 lm_get_chunk_call(&lmc, client, keep, size, base, vrf_id);
bf094f69 2832
bf094f69
QY		 2833stream_failure:
2834 return;
2835}
2836
2837static void zread_release_label_chunk(struct zserv *client, struct stream *msg)
2838{
2839 struct stream *s;
2840 uint32_t start, end;
5dffb0e9
FR		 2841 uint8_t proto;
2842 unsigned short instance;
bf094f69
QY		 2843
2844 /* Get input stream. */
2845 s = msg;
2846
2847 /* Get data. */
5dffb0e9
FR		 2848 STREAM_GETC(s, proto);
2849 STREAM_GETW(s, instance);
bf094f69
QY		 2850 STREAM_GETL(s, start);
2851 STREAM_GETL(s, end);
2852
4cebdb9b
MS		 2853 assert(proto == client->proto && instance == client->instance);
2854
e11d7c96 2855 /* call hook to release a chunk using wrapper */
4cebdb9b 2856 lm_release_chunk_call(client, start, end);
bf094f69
QY		 2857
2858stream_failure:
2859 return;
2860}
e11d7c96 2861
bf094f69
QY		 2862static void zread_label_manager_request(ZAPI_HANDLER_ARGS)
2863{
e11d7c96
EDP		 2864 if (hdr->command == ZEBRA_LABEL_MANAGER_CONNECT
2865 || hdr->command == ZEBRA_LABEL_MANAGER_CONNECT_ASYNC)
2866 zread_label_manager_connect(client, msg, zvrf_id(zvrf));
bf094f69 2867 else {
e11d7c96
EDP		 2868 if (hdr->command == ZEBRA_GET_LABEL_CHUNK)
2869 zread_get_label_chunk(client, msg, zvrf_id(zvrf));
2870 else if (hdr->command == ZEBRA_RELEASE_LABEL_CHUNK)
2871 zread_release_label_chunk(client, msg);
bf094f69
QY		 2872 }
2873}
2874
2875static void zread_get_table_chunk(struct zserv *client, struct stream *msg,
42d4b30e 2876 struct zebra_vrf *zvrf)
bf094f69
QY		 2877{
2878 struct stream *s;
2879 uint32_t size;
2880 struct table_manager_chunk *tmc;
2881
2882 /* Get input stream. */
2883 s = msg;
2884
2885 /* Get data. */
2886 STREAM_GETL(s, size);
2887
42d4b30e 2888 tmc = assign_table_chunk(client->proto, client->instance, size, zvrf);
bf094f69 2889 if (!tmc)
e914ccbe 2890 flog_err(EC_ZEBRA_TM_CANNOT_ASSIGN_CHUNK,
1c50c1c0
QY		 2891 "%s: Unable to assign Table Chunk of size %u",
2892 __func__, size);
bf094f69
QY		 2893 else
2894 zlog_debug("Assigned Table Chunk %u - %u", tmc->start,
2895 tmc->end);
2896 /* send response back */
42d4b30e 2897 zsend_assign_table_chunk_response(client, zvrf_id(zvrf), tmc);
bf094f69
QY		 2898
2899stream_failure:
2900 return;
2901}
2902
42d4b30e
PG		 2903static void zread_release_table_chunk(struct zserv *client, struct stream *msg,
2904 struct zebra_vrf *zvrf)
bf094f69
QY		 2905{
2906 struct stream *s;
2907 uint32_t start, end;
2908
2909 /* Get input stream. */
2910 s = msg;
2911
2912 /* Get data. */
2913 STREAM_GETL(s, start);
2914 STREAM_GETL(s, end);
2915
42d4b30e 2916 release_table_chunk(client->proto, client->instance, start, end, zvrf);
bf094f69
QY		 2917
2918stream_failure:
2919 return;
2920}
2921
2922static void zread_table_manager_request(ZAPI_HANDLER_ARGS)
2923{
16bd37d6 2924 /* to avoid sending other messages like ZEBRA_INTERFACE_UP */
bf094f69
QY		 2925 if (hdr->command == ZEBRA_TABLE_MANAGER_CONNECT)
2926 zread_table_manager_connect(client, msg, zvrf_id(zvrf));
2927 else {
2928 /* Sanity: don't allow 'unidentified' requests */
2929 if (!client->proto) {
af4c2728 2930 flog_err(
e914ccbe 2931 EC_ZEBRA_TM_ALIENS,
16bd37d6 2932 "Got SRv6 request from an unidentified client");
bf094f69
QY		 2933 return;
2934 }
2935 if (hdr->command == ZEBRA_GET_TABLE_CHUNK)
42d4b30e 2936 zread_get_table_chunk(client, msg, zvrf);
bf094f69 2937 else if (hdr->command == ZEBRA_RELEASE_TABLE_CHUNK)
42d4b30e 2938 zread_release_table_chunk(client, msg, zvrf);
bf094f69
QY		 2939 }
2940}
2941
6e68a084
HS		 2942static void zread_srv6_manager_get_locator_chunk(struct zserv *client,
2943 struct stream *msg,
2944 vrf_id_t vrf_id)
2945{
2946 struct stream *s = msg;
6e68a084
HS		 2947 uint16_t len;
2948 char locator_name[SRV6_LOCNAME_SIZE] = {0};
2949
2950 /* Get data. */
6e68a084
HS		 2951 STREAM_GETW(s, len);
2952 STREAM_GET(locator_name, s, len);
2953
6e68a084
HS		 2954 /* call hook to get a chunk using wrapper */
2955 struct srv6_locator *loc = NULL;
2956 srv6_manager_get_locator_chunk_call(&loc, client, locator_name, vrf_id);
2957
2958stream_failure:
2959 return;
2960}
2961
2962static void zread_srv6_manager_release_locator_chunk(struct zserv *client,
2963 struct stream *msg,
2964 vrf_id_t vrf_id)
2965{
2966 struct stream *s = msg;
6e68a084
HS		 2967 uint16_t len;
2968 char locator_name[SRV6_LOCNAME_SIZE] = {0};
2969
2970 /* Get data. */
6e68a084
HS		 2971 STREAM_GETW(s, len);
2972 STREAM_GET(locator_name, s, len);
2973
6e68a084
HS		 2974 /* call hook to release a chunk using wrapper */
2975 srv6_manager_release_locator_chunk_call(client, locator_name, vrf_id);
2976
2977stream_failure:
2978 return;
2979}
2980
2981static void zread_srv6_manager_request(ZAPI_HANDLER_ARGS)
2982{
2983 switch (hdr->command) {
6e68a084
HS		 2984 case ZEBRA_SRV6_MANAGER_GET_LOCATOR_CHUNK:
2985 zread_srv6_manager_get_locator_chunk(client, msg,
2986 zvrf_id(zvrf));
2987 break;
2988 case ZEBRA_SRV6_MANAGER_RELEASE_LOCATOR_CHUNK:
2989 zread_srv6_manager_release_locator_chunk(client, msg,
2990 zvrf_id(zvrf));
2991 break;
2992 default:
9f900cda 2993 zlog_err("%s: unknown SRv6 Manager command", __func__);
6e68a084
HS		 2994 break;
2995 }
2996}
2997
bf094f69
QY		 2998static void zread_pseudowire(ZAPI_HANDLER_ARGS)
2999{
3000 struct stream *s;
3682bd90 3001 char ifname[INTERFACE_NAMSIZ];
bf094f69
QY		 3002 ifindex_t ifindex;
3003 int type;
3004 int af;
3005 union g_addr nexthop;
3006 uint32_t local_label;
3007 uint32_t remote_label;
3008 uint8_t flags;
3009 union pw_protocol_fields data;
3010 uint8_t protocol;
3011 struct zebra_pw *pw;
3012
3013 /* Get input stream. */
3014 s = msg;
3015
3016 /* Get data. */
3682bd90
RZ		 3017 STREAM_GET(ifname, s, INTERFACE_NAMSIZ);
3018 ifname[INTERFACE_NAMSIZ - 1] = '\0';
bf094f69
QY		 3019 STREAM_GETL(s, ifindex);
3020 STREAM_GETL(s, type);
3021 STREAM_GETL(s, af);
3022 switch (af) {
3023 case AF_INET:
3024 STREAM_GET(&nexthop.ipv4.s_addr, s, IPV4_MAX_BYTELEN);
3025 break;
3026 case AF_INET6:
3027 STREAM_GET(&nexthop.ipv6, s, 16);
3028 break;
3029 default:
3030 return;
3031 }
3032 STREAM_GETL(s, local_label);
3033 STREAM_GETL(s, remote_label);
3034 STREAM_GETC(s, flags);
3035 STREAM_GET(&data, s, sizeof(data));
3036 protocol = client->proto;
3037
3038 pw = zebra_pw_find(zvrf, ifname);
3039 switch (hdr->command) {
3040 case ZEBRA_PW_ADD:
3041 if (pw) {
e914ccbe 3042 flog_warn(EC_ZEBRA_PSEUDOWIRE_EXISTS,
9df414fe 3043 "%s: pseudowire %s already exists [%s]",
bf094f69
QY		 3044 __func__, ifname,
3045 zserv_command_string(hdr->command));
3046 return;
3047 }
3048
3049 zebra_pw_add(zvrf, ifname, protocol, client);
3050 break;
3051 case ZEBRA_PW_DELETE:
3052 if (!pw) {
e914ccbe 3053 flog_warn(EC_ZEBRA_PSEUDOWIRE_NONEXISTENT,
9df414fe 3054 "%s: pseudowire %s not found [%s]", __func__,
bf094f69
QY		 3055 ifname, zserv_command_string(hdr->command));
3056 return;
3057 }
3058
3059 zebra_pw_del(zvrf, pw);
3060 break;
3061 case ZEBRA_PW_SET:
3062 case ZEBRA_PW_UNSET:
3063 if (!pw) {
e914ccbe 3064 flog_warn(EC_ZEBRA_PSEUDOWIRE_NONEXISTENT,
9df414fe 3065 "%s: pseudowire %s not found [%s]", __func__,
bf094f69
QY		 3066 ifname, zserv_command_string(hdr->command));
3067 return;
3068 }
3069
3070 switch (hdr->command) {
3071 case ZEBRA_PW_SET:
3072 pw->enabled = 1;
3073 break;
3074 case ZEBRA_PW_UNSET:
3075 pw->enabled = 0;
3076 break;
3077 }
3078
3079 zebra_pw_change(pw, ifindex, type, af, &nexthop, local_label,
3080 remote_label, flags, &data);
3081 break;
3082 }
3083
3084stream_failure:
3085 return;
3086}
3087
3088static void zread_interface_set_master(ZAPI_HANDLER_ARGS)
3089{
3090 struct interface *master;
3091 struct interface *slave;
3092 struct stream *s = msg;
3093 int ifindex;
3094 vrf_id_t vrf_id;
3095
3096 STREAM_GETL(s, vrf_id);
3097 STREAM_GETL(s, ifindex);
3098 master = if_lookup_by_index(ifindex, vrf_id);
3099
3100 STREAM_GETL(s, vrf_id);
3101 STREAM_GETL(s, ifindex);
3102 slave = if_lookup_by_index(ifindex, vrf_id);
3103
3104 if (!master || !slave)
3105 return;
3106
3107 kernel_interface_set_master(master, slave);
3108
3109stream_failure:
3110 return;
3111}
3112
3113
3114static void zread_vrf_label(ZAPI_HANDLER_ARGS)
3115{
3116 struct interface *ifp;
3117 mpls_label_t nlabel;
3118 afi_t afi;
3119 struct stream *s;
3120 struct zebra_vrf *def_zvrf;
3121 enum lsp_types_t ltype;
3122
3123 s = msg;
3124 STREAM_GETL(s, nlabel);
3125 STREAM_GETC(s, afi);
663d3a91
QY		 3126
3127 if (!(IS_VALID_AFI(afi))) {
3128 zlog_warn("Invalid AFI for VRF label: %u", afi);
3129 return;
3130 }
3131
bf094f69
QY		 3132 if (nlabel == zvrf->label[afi]) {
3133 /*
3134 * Nothing to do here move along
3135 */
3136 return;
3137 }
3138
3139 STREAM_GETC(s, ltype);
3140
3141 if (zvrf->vrf->vrf_id != VRF_DEFAULT)
a36898e7 3142 ifp = if_lookup_by_name(zvrf->vrf->name, zvrf->vrf->vrf_id);
bf094f69 3143 else
a36898e7 3144 ifp = if_lookup_by_name("lo", VRF_DEFAULT);
bf094f69
QY		 3145
3146 if (!ifp) {
3147 zlog_debug("Unable to find specified Interface for %s",
3148 zvrf->vrf->name);
3149 return;
3150 }
3151
3152 def_zvrf = zebra_vrf_lookup_by_id(VRF_DEFAULT);
3153
3154 if (zvrf->label[afi] != MPLS_LABEL_NONE) {
3155 afi_t scrubber;
3156 bool really_remove;
3157
3158 really_remove = true;
3159 for (scrubber = AFI_IP; scrubber < AFI_MAX; scrubber++) {
3160 if (scrubber == afi)
3161 continue;
3162
3163 if (zvrf->label[scrubber] == MPLS_LABEL_NONE)
3164 continue;
3165
3166 if (zvrf->label[afi] == zvrf->label[scrubber]) {
3167 really_remove = false;
3168 break;
3169 }
3170 }
3171
3172 if (really_remove)
3173 mpls_lsp_uninstall(def_zvrf, ltype, zvrf->label[afi],
3174 NEXTHOP_TYPE_IFINDEX, NULL,
cc1b9746 3175 ifp->ifindex, false /*backup*/);
bf094f69
QY		 3176 }
3177
5065db0a
RW		 3178 if (nlabel != MPLS_LABEL_NONE) {
3179 mpls_label_t out_label = MPLS_LABEL_IMPLICIT_NULL;
3180 mpls_lsp_install(def_zvrf, ltype, nlabel, 1, &out_label,
3181 NEXTHOP_TYPE_IFINDEX, NULL, ifp->ifindex);
3182 }
bf094f69
QY		 3183
3184 zvrf->label[afi] = nlabel;
06302ecb
DS		 3185 zvrf->label_proto[afi] = client->proto;
3186
bf094f69
QY		 3187stream_failure:
3188 return;
3189}
3190
3191static inline void zread_rule(ZAPI_HANDLER_ARGS)
3192{
3193 struct zebra_pbr_rule zpr;
3194 struct stream *s;
3195 uint32_t total, i;
58a1d249 3196 char ifname[INTERFACE_NAMSIZ + 1] = {};
bf094f69
QY		 3197
3198 s = msg;
3199 STREAM_GETL(s, total);
3200
3201 for (i = 0; i < total; i++) {
3202 memset(&zpr, 0, sizeof(zpr));
3203
3204 zpr.sock = client->sock;
3205 zpr.rule.vrf_id = hdr->vrf_id;
3206 STREAM_GETL(s, zpr.rule.seq);
3207 STREAM_GETL(s, zpr.rule.priority);
3208 STREAM_GETL(s, zpr.rule.unique);
f56697ef 3209 STREAM_GETC(s, zpr.rule.filter.ip_proto);
bf094f69
QY		 3210 STREAM_GETC(s, zpr.rule.filter.src_ip.family);
3211 STREAM_GETC(s, zpr.rule.filter.src_ip.prefixlen);
3212 STREAM_GET(&zpr.rule.filter.src_ip.u.prefix, s,
3213 prefix_blen(&zpr.rule.filter.src_ip));
3214 STREAM_GETW(s, zpr.rule.filter.src_port);
3215 STREAM_GETC(s, zpr.rule.filter.dst_ip.family);
3216 STREAM_GETC(s, zpr.rule.filter.dst_ip.prefixlen);
3217 STREAM_GET(&zpr.rule.filter.dst_ip.u.prefix, s,
3218 prefix_blen(&zpr.rule.filter.dst_ip));
3219 STREAM_GETW(s, zpr.rule.filter.dst_port);
01f23aff 3220 STREAM_GETC(s, zpr.rule.filter.dsfield);
bf094f69 3221 STREAM_GETL(s, zpr.rule.filter.fwmark);
d70a31a3
EB		 3222
3223 STREAM_GETL(s, zpr.rule.action.queue_id);
3224 STREAM_GETW(s, zpr.rule.action.vlan_id);
3225 STREAM_GETW(s, zpr.rule.action.vlan_flags);
3226 STREAM_GETW(s, zpr.rule.action.pcp);
3227
bf094f69 3228 STREAM_GETL(s, zpr.rule.action.table);
58a1d249 3229 STREAM_GET(ifname, s, INTERFACE_NAMSIZ);
bf094f69 3230
58a1d249
DS		 3231 strlcpy(zpr.ifname, ifname, sizeof(zpr.ifname));
3232 strlcpy(zpr.rule.ifname, ifname, sizeof(zpr.rule.ifname));
bf094f69
QY		 3233
3234 if (!is_default_prefix(&zpr.rule.filter.src_ip))
3235 zpr.rule.filter.filter_bm |= PBR_FILTER_SRC_IP;
3236
3237 if (!is_default_prefix(&zpr.rule.filter.dst_ip))
3238 zpr.rule.filter.filter_bm |= PBR_FILTER_DST_IP;
3239
3240 if (zpr.rule.filter.src_port)
3241 zpr.rule.filter.filter_bm |= PBR_FILTER_SRC_PORT;
3242
3243 if (zpr.rule.filter.dst_port)
3244 zpr.rule.filter.filter_bm |= PBR_FILTER_DST_PORT;
3245
01f23aff
WC		 3246 if (zpr.rule.filter.dsfield)
3247 zpr.rule.filter.filter_bm |= PBR_FILTER_DSFIELD;
3248
f56697ef
DS		 3249 if (zpr.rule.filter.ip_proto)
3250 zpr.rule.filter.filter_bm |= PBR_FILTER_IP_PROTOCOL;
3251
bf094f69
QY		 3252 if (zpr.rule.filter.fwmark)
3253 zpr.rule.filter.filter_bm |= PBR_FILTER_FWMARK;
3254
4719fd76
QY		 3255 if (!(zpr.rule.filter.src_ip.family == AF_INET
3256 || zpr.rule.filter.src_ip.family == AF_INET6)) {
cc815be7 3257 zlog_warn(
6cde4b45 3258 "Unsupported PBR source IP family: %s (%hhu)",
cc815be7
QY		 3259 family2str(zpr.rule.filter.src_ip.family),
3260 zpr.rule.filter.src_ip.family);
4719fd76
QY		 3261 return;
3262 }
3263 if (!(zpr.rule.filter.dst_ip.family == AF_INET
3264 || zpr.rule.filter.dst_ip.family == AF_INET6)) {
cec72d49 3265 zlog_warn(
6cde4b45 3266 "Unsupported PBR destination IP family: %s (%hhu)",
cec72d49
DA		 3267 family2str(zpr.rule.filter.dst_ip.family),
3268 zpr.rule.filter.dst_ip.family);
4719fd76
QY		 3269 return;
3270 }
3271
3272
7f0ea8a4 3273 zpr.vrf_id = zvrf->vrf->vrf_id;
bf094f69 3274 if (hdr->command == ZEBRA_RULE_ADD)
7f0ea8a4 3275 zebra_pbr_add_rule(&zpr);
bf094f69 3276 else
7f0ea8a4 3277 zebra_pbr_del_rule(&zpr);
bf094f69
QY		 3278 }
3279
3280stream_failure:
3281 return;
3282}
3283
3284static inline void zread_ipset(ZAPI_HANDLER_ARGS)
3285{
3286 struct zebra_pbr_ipset zpi;
3287 struct stream *s;
3288 uint32_t total, i;
3289
3290 s = msg;
3291 STREAM_GETL(s, total);
3292
3293 for (i = 0; i < total; i++) {
3294 memset(&zpi, 0, sizeof(zpi));
3295
3296 zpi.sock = client->sock;
be2028d1 3297 zpi.vrf_id = zvrf->vrf->vrf_id;
bf094f69
QY		 3298 STREAM_GETL(s, zpi.unique);
3299 STREAM_GETL(s, zpi.type);
a60b7031 3300 STREAM_GETC(s, zpi.family);
bf094f69
QY		 3301 STREAM_GET(&zpi.ipset_name, s, ZEBRA_IPSET_NAME_SIZE);
3302
3303 if (hdr->command == ZEBRA_IPSET_CREATE)
62f20a52 3304 zebra_pbr_create_ipset(&zpi);
bf094f69 3305 else
62f20a52 3306 zebra_pbr_destroy_ipset(&zpi);
bf094f69
QY		 3307 }
3308
3309stream_failure:
3310 return;
3311}
3312
3313static inline void zread_ipset_entry(ZAPI_HANDLER_ARGS)
3314{
3315 struct zebra_pbr_ipset_entry zpi;
3316 struct zebra_pbr_ipset ipset;
3317 struct stream *s;
3318 uint32_t total, i;
3319
3320 s = msg;
3321 STREAM_GETL(s, total);
3322
3323 for (i = 0; i < total; i++) {
3324 memset(&zpi, 0, sizeof(zpi));
3325 memset(&ipset, 0, sizeof(ipset));
3326
3327 zpi.sock = client->sock;
3328 STREAM_GETL(s, zpi.unique);
3329 STREAM_GET(&ipset.ipset_name, s, ZEBRA_IPSET_NAME_SIZE);
261462c3 3330 ipset.ipset_name[ZEBRA_IPSET_NAME_SIZE - 1] = '\0';
bf094f69
QY		 3331 STREAM_GETC(s, zpi.src.family);
3332 STREAM_GETC(s, zpi.src.prefixlen);
3333 STREAM_GET(&zpi.src.u.prefix, s, prefix_blen(&zpi.src));
3334 STREAM_GETC(s, zpi.dst.family);
3335 STREAM_GETC(s, zpi.dst.prefixlen);
3336 STREAM_GET(&zpi.dst.u.prefix, s, prefix_blen(&zpi.dst));
3337
25d760c5
PG		 3338 STREAM_GETW(s, zpi.src_port_min);
3339 STREAM_GETW(s, zpi.src_port_max);
3340 STREAM_GETW(s, zpi.dst_port_min);
3341 STREAM_GETW(s, zpi.dst_port_max);
3342 STREAM_GETC(s, zpi.proto);
bf094f69
QY		 3343 if (!is_default_prefix(&zpi.src))
3344 zpi.filter_bm |= PBR_FILTER_SRC_IP;
3345
3346 if (!is_default_prefix(&zpi.dst))
3347 zpi.filter_bm |= PBR_FILTER_DST_IP;
be729dd7 3348 if (zpi.dst_port_min != 0 || zpi.proto == IPPROTO_ICMP)
25d760c5 3349 zpi.filter_bm |= PBR_FILTER_DST_PORT;
be729dd7 3350 if (zpi.src_port_min != 0 || zpi.proto == IPPROTO_ICMP)
25d760c5
PG		 3351 zpi.filter_bm |= PBR_FILTER_SRC_PORT;
3352 if (zpi.dst_port_max != 0)
3353 zpi.filter_bm |= PBR_FILTER_DST_PORT_RANGE;
3354 if (zpi.src_port_max != 0)
3355 zpi.filter_bm |= PBR_FILTER_SRC_PORT_RANGE;
3356 if (zpi.proto != 0)
3357 zpi.filter_bm |= PBR_FILTER_PROTO;
bf094f69 3358
9863725c
QY		 3359 if (!(zpi.dst.family == AF_INET
3360 || zpi.dst.family == AF_INET6)) {
cec72d49 3361 zlog_warn(
6cde4b45 3362 "Unsupported PBR destination IP family: %s (%hhu)",
cec72d49 3363 family2str(zpi.dst.family), zpi.dst.family);
9863725c
QY		 3364 goto stream_failure;
3365 }
3366 if (!(zpi.src.family == AF_INET
3367 || zpi.src.family == AF_INET6)) {
cec72d49 3368 zlog_warn(
6cde4b45 3369 "Unsupported PBR source IP family: %s (%hhu)",
cec72d49 3370 family2str(zpi.src.family), zpi.src.family);
9863725c
QY		 3371 goto stream_failure;
3372 }
3373
bf094f69 3374 /* calculate backpointer */
62f20a52
DS		 3375 zpi.backpointer =
3376 zebra_pbr_lookup_ipset_pername(ipset.ipset_name);
f096bae4
DS		 3377
3378 if (!zpi.backpointer) {
3379 zlog_warn("ipset name specified: %s does not exist",
3380 ipset.ipset_name);
3381 goto stream_failure;
3382 }
3383
bf094f69 3384 if (hdr->command == ZEBRA_IPSET_ENTRY_ADD)
62f20a52 3385 zebra_pbr_add_ipset_entry(&zpi);
bf094f69 3386 else
62f20a52 3387 zebra_pbr_del_ipset_entry(&zpi);
bf094f69
QY		 3388 }
3389
3390stream_failure:
3391 return;
3392}
3393
05657ec2 3394
7723e8d3
PG		 3395static inline void zebra_neigh_register(ZAPI_HANDLER_ARGS)
3396{
3397 afi_t afi;
3398
3399 STREAM_GETW(msg, afi);
3400 if (afi <= AFI_UNSPEC || afi >= AFI_MAX) {
3401 zlog_warn(
3402 "Invalid AFI %u while registering for neighbors notifications",
3403 afi);
3404 goto stream_failure;
3405 }
3406 vrf_bitmap_set(client->nhrp_neighinfo[afi], zvrf_id(zvrf));
3407stream_failure:
3408 return;
3409}
3410
3411static inline void zebra_neigh_unregister(ZAPI_HANDLER_ARGS)
3412{
3413 afi_t afi;
3414
3415 STREAM_GETW(msg, afi);
3416 if (afi <= AFI_UNSPEC || afi >= AFI_MAX) {
3417 zlog_warn(
3418 "Invalid AFI %u while unregistering from neighbor notifications",
3419 afi);
3420 goto stream_failure;
3421 }
3422 vrf_bitmap_unset(client->nhrp_neighinfo[afi], zvrf_id(zvrf));
3423stream_failure:
3424 return;
3425}
3426
d17af8dd
PG		 3427static inline void zebra_gre_get(ZAPI_HANDLER_ARGS)
3428{
3429 struct stream *s;
3430 ifindex_t idx;
3431 struct interface *ifp;
3432 struct zebra_if *zebra_if = NULL;
3433 struct zebra_l2info_gre *gre_info;
3434 struct interface *ifp_link = NULL;
3435 vrf_id_t vrf_id_link = VRF_UNKNOWN;
3436 vrf_id_t vrf_id = zvrf->vrf->vrf_id;
3437
3438 s = msg;
3439 STREAM_GETL(s, idx);
3440 ifp = if_lookup_by_index(idx, vrf_id);
3441
3442 if (ifp)
3443 zebra_if = ifp->info;
3444
3445 s = stream_new(ZEBRA_MAX_PACKET_SIZ);
3446
3447 zclient_create_header(s, ZEBRA_GRE_UPDATE, vrf_id);
3448
3449 if (ifp && IS_ZEBRA_IF_GRE(ifp) && zebra_if) {
3450 gre_info = &zebra_if->l2info.gre;
3451
3452 stream_putl(s, idx);
3453 stream_putl(s, gre_info->ikey);
3454 stream_putl(s, gre_info->ikey);
3455 stream_putl(s, gre_info->ifindex_link);
3456
3457 ifp_link = if_lookup_by_index_per_ns(
3458 zebra_ns_lookup(gre_info->link_nsid),
3459 gre_info->ifindex_link);
3460 if (ifp_link)
096f7609 3461 vrf_id_link = ifp_link->vrf->vrf_id;
d17af8dd
PG		 3462 stream_putl(s, vrf_id_link);
3463 stream_putl(s, gre_info->vtep_ip.s_addr);
3464 stream_putl(s, gre_info->vtep_ip_remote.s_addr);
3465 } else {
3466 stream_putl(s, idx);
3467 stream_putl(s, 0);
3468 stream_putl(s, 0);
3469 stream_putl(s, IFINDEX_INTERNAL);
3470 stream_putl(s, VRF_UNKNOWN);
3471 stream_putl(s, 0);
bcb68fe0 3472 stream_putl(s, 0);
d17af8dd
PG		 3473 }
3474 /* Write packet size. */
3475 stream_putw_at(s, 0, stream_get_endp(s));
3476 zserv_send_message(client, s);
3477
3478 return;
3479 stream_failure:
3480 return;
3481}
3482
541025d6
PG		 3483static inline void zebra_configure_arp(ZAPI_HANDLER_ARGS)
3484{
3485 struct stream *s;
e18747a9 3486 uint8_t fam;
541025d6
PG		 3487 ifindex_t idx;
3488 struct interface *ifp;
541025d6
PG		 3489
3490 s = msg;
3491 STREAM_GETC(s, fam);
3492 if (fam != AF_INET && fam != AF_INET6)
3493 return;
3494 STREAM_GETL(s, idx);
3495 ifp = if_lookup_by_index_per_ns(zvrf->zns, idx);
3496 if (!ifp)
3497 return;
e18747a9 3498 dplane_neigh_table_update(ifp, fam, 1, 0, 0);
541025d6
PG		 3499stream_failure:
3500 return;
3501}
3502
d603c077 3503static inline void zebra_neigh_ip_add(ZAPI_HANDLER_ARGS)
05657ec2
PG		 3504{
3505 struct stream *s;
d603c077 3506 struct zapi_neigh_ip api = {};
05657ec2 3507 int ret;
0a27a2fe 3508 const struct interface *ifp;
05657ec2
PG		 3509
3510 s = msg;
d603c077 3511 ret = zclient_neigh_ip_decode(s, &api);
05657ec2
PG		 3512 if (ret < 0)
3513 return;
0a27a2fe
PG		 3514 ifp = if_lookup_by_index(api.index, zvrf_id(zvrf));
3515 if (!ifp)
3516 return;
3517 dplane_neigh_ip_update(DPLANE_OP_NEIGH_IP_INSTALL, ifp, &api.ip_out,
d603c077 3518 &api.ip_in, api.ndm_state, client->proto);
05657ec2
PG		 3519}
3520
0a27a2fe 3521
d603c077 3522static inline void zebra_neigh_ip_del(ZAPI_HANDLER_ARGS)
05657ec2
PG		 3523{
3524 struct stream *s;
d603c077 3525 struct zapi_neigh_ip api = {};
05657ec2 3526 int ret;
0a27a2fe 3527 struct interface *ifp;
05657ec2 3528
05657ec2 3529 s = msg;
d603c077 3530 ret = zclient_neigh_ip_decode(s, &api);
05657ec2
PG		 3531 if (ret < 0)
3532 return;
0a27a2fe
PG		 3533 ifp = if_lookup_by_index(api.index, zvrf_id(zvrf));
3534 if (!ifp)
3535 return;
3536 dplane_neigh_ip_update(DPLANE_OP_NEIGH_IP_DELETE, ifp, &api.ip_out,
d603c077 3537 &api.ip_in, api.ndm_state, client->proto);
05657ec2
PG		 3538}
3539
3540
bf094f69
QY		 3541static inline void zread_iptable(ZAPI_HANDLER_ARGS)
3542{
8b5c4dce
QY		 3543 struct zebra_pbr_iptable *zpi =
3544 XCALLOC(MTYPE_TMP, sizeof(struct zebra_pbr_iptable));
bf094f69
QY		 3545 struct stream *s;
3546
3547 s = msg;
3548
8b5c4dce
QY		 3549 zpi->interface_name_list = list_new();
3550 zpi->sock = client->sock;
3551 zpi->vrf_id = zvrf->vrf->vrf_id;
3552 STREAM_GETL(s, zpi->unique);
3553 STREAM_GETL(s, zpi->type);
3554 STREAM_GETL(s, zpi->filter_bm);
3555 STREAM_GETL(s, zpi->action);
3556 STREAM_GETL(s, zpi->fwmark);
3557 STREAM_GET(&zpi->ipset_name, s, ZEBRA_IPSET_NAME_SIZE);
a60b7031 3558 STREAM_GETC(s, zpi->family);
8b5c4dce
QY		 3559 STREAM_GETW(s, zpi->pkt_len_min);
3560 STREAM_GETW(s, zpi->pkt_len_max);
3561 STREAM_GETW(s, zpi->tcp_flags);
3562 STREAM_GETW(s, zpi->tcp_mask_flags);
3563 STREAM_GETC(s, zpi->dscp_value);
3564 STREAM_GETC(s, zpi->fragment);
3565 STREAM_GETC(s, zpi->protocol);
a60b7031 3566 STREAM_GETW(s, zpi->flow_label);
8b5c4dce
QY		 3567 STREAM_GETL(s, zpi->nb_interface);
3568 zebra_pbr_iptable_update_interfacelist(s, zpi);
bf094f69
QY		 3569
3570 if (hdr->command == ZEBRA_IPTABLE_ADD)
8b5c4dce 3571 zebra_pbr_add_iptable(zpi);
bf094f69 3572 else
8b5c4dce
QY		 3573 zebra_pbr_del_iptable(zpi);
3574
bf094f69 3575stream_failure:
8b5c4dce
QY		 3576 zebra_pbr_iptable_free(zpi);
3577 zpi = NULL;
bf094f69
QY		 3578 return;
3579}
3580
d68e74b4
JU		 3581static inline void zread_neigh_discover(ZAPI_HANDLER_ARGS)
3582{
3583 struct stream *s;
3584 ifindex_t ifindex;
3585 struct interface *ifp;
3586 struct prefix p;
3587 struct ipaddr ip;
3588
3589 s = msg;
3590
3591 STREAM_GETL(s, ifindex);
3592
3593 ifp = if_lookup_by_index_per_ns(zvrf->zns, ifindex);
3594 if (!ifp) {
3595 zlog_debug("Failed to lookup ifindex: %u", ifindex);
3596 return;
3597 }
3598
3599 STREAM_GETC(s, p.family);
3600 STREAM_GETC(s, p.prefixlen);
3601 STREAM_GET(&p.u.prefix, s, prefix_blen(&p));
3602
3603 if (p.family == AF_INET)
3604 SET_IPADDR_V4(&ip);
3605 else
3606 SET_IPADDR_V6(&ip);
3607
3608 memcpy(&ip.ip.addr, &p.u.prefix, prefix_blen(&p));
3609
3610 dplane_neigh_discover(ifp, &ip);
3611
3612stream_failure:
3613 return;
3614}
3615
b716ab61
PG		 3616static inline void zebra_gre_source_set(ZAPI_HANDLER_ARGS)
3617{
3618 struct stream *s;
3619 ifindex_t idx, link_idx;
3620 vrf_id_t link_vrf_id;
3621 struct interface *ifp;
3622 struct interface *ifp_link;
b716ab61 3623 vrf_id_t vrf_id = zvrf->vrf->vrf_id;
62b4b7e4
PG		 3624 struct zebra_if *zif, *gre_zif;
3625 struct zebra_l2info_gre *gre_info;
db51f0cd 3626 unsigned int mtu;
b716ab61
PG		 3627
3628 s = msg;
3629 STREAM_GETL(s, idx);
3630 ifp = if_lookup_by_index(idx, vrf_id);
3631 STREAM_GETL(s, link_idx);
3632 STREAM_GETL(s, link_vrf_id);
db51f0cd 3633 STREAM_GETL(s, mtu);
62b4b7e4 3634
b716ab61
PG		 3635 ifp_link = if_lookup_by_index(link_idx, link_vrf_id);
3636 if (!ifp_link || !ifp) {
3637 zlog_warn("GRE (index %u, VRF %u) or GRE link interface (index %u, VRF %u) not found, when setting GRE params",
3638 idx, vrf_id, link_idx, link_vrf_id);
3639 return;
3640 }
62b4b7e4
PG		 3641
3642 if (!IS_ZEBRA_IF_GRE(ifp))
3643 return;
3644
3645 gre_zif = (struct zebra_if *)ifp->info;
3646 zif = (struct zebra_if *)ifp_link->info;
3647 if (!zif || !gre_zif)
3648 return;
3649
3650 gre_info = &zif->l2info.gre;
3651 if (!gre_info)
3652 return;
3653
db51f0cd
PG		 3654 if (!mtu)
3655 mtu = ifp->mtu;
3656
3657 /* if gre link already set or mtu did not change, do not set it */
3658 if (gre_zif->link && gre_zif->link == ifp_link && mtu == ifp->mtu)
62b4b7e4
PG		 3659 return;
3660
e3d3fa06 3661 dplane_gre_set(ifp, ifp_link, mtu, gre_info);
b716ab61
PG		 3662
3663 stream_failure:
3664 return;
3665}
3666
9ab0b2a3
SW		 3667static void zsend_error_msg(struct zserv *client, enum zebra_error_types error,
3668 struct zmsghdr *bad_hdr)
3669{
3670
3671 struct stream *s = stream_new(ZEBRA_MAX_PACKET_SIZ);
3672
3673 zclient_create_header(s, ZEBRA_ERROR, bad_hdr->vrf_id);
3674
3675 zserv_encode_error(s, error);
3676
3677 client->error_cnt++;
3678 zserv_send_message(client, s);
3679}
3680
3681static void zserv_error_no_vrf(ZAPI_HANDLER_ARGS)
3682{
3683 if (IS_ZEBRA_DEBUG_PACKET && IS_ZEBRA_DEBUG_RECV)
3684 zlog_debug("ZAPI message specifies unknown VRF: %d",
3685 hdr->vrf_id);
3686
5ee080f0 3687 zsend_error_msg(client, ZEBRA_NO_VRF, hdr);
9ab0b2a3
SW		 3688}
3689
3690static void zserv_error_invalid_msg_type(ZAPI_HANDLER_ARGS)
3691{
3692 zlog_info("Zebra received unknown command %d", hdr->command);
3693
5ee080f0 3694 zsend_error_msg(client, ZEBRA_INVALID_MSG_TYPE, hdr);
9ab0b2a3
SW		 3695}
3696
2b64873d 3697void (*const zserv_handlers[])(ZAPI_HANDLER_ARGS) = {
bf094f69
QY		 3698 [ZEBRA_ROUTER_ID_ADD] = zread_router_id_add,
3699 [ZEBRA_ROUTER_ID_DELETE] = zread_router_id_delete,
3700 [ZEBRA_INTERFACE_ADD] = zread_interface_add,
3701 [ZEBRA_INTERFACE_DELETE] = zread_interface_delete,
c3bd894e 3702 [ZEBRA_INTERFACE_SET_PROTODOWN] = zread_interface_set_protodown,
bf094f69
QY		 3703 [ZEBRA_ROUTE_ADD] = zread_route_add,
3704 [ZEBRA_ROUTE_DELETE] = zread_route_del,
bf094f69
QY		 3705 [ZEBRA_REDISTRIBUTE_ADD] = zebra_redistribute_add,
3706 [ZEBRA_REDISTRIBUTE_DELETE] = zebra_redistribute_delete,
3707 [ZEBRA_REDISTRIBUTE_DEFAULT_ADD] = zebra_redistribute_default_add,
3708 [ZEBRA_REDISTRIBUTE_DEFAULT_DELETE] = zebra_redistribute_default_delete,
34ee41c6 3709 [ZEBRA_NEXTHOP_LOOKUP_MRIB] = zread_nexthop_lookup_mrib,
bf094f69
QY		 3710 [ZEBRA_HELLO] = zread_hello,
3711 [ZEBRA_NEXTHOP_REGISTER] = zread_rnh_register,
3712 [ZEBRA_NEXTHOP_UNREGISTER] = zread_rnh_unregister,
bf094f69
QY		 3713 [ZEBRA_BFD_DEST_UPDATE] = zebra_ptm_bfd_dst_register,
3714 [ZEBRA_BFD_DEST_REGISTER] = zebra_ptm_bfd_dst_register,
3715 [ZEBRA_BFD_DEST_DEREGISTER] = zebra_ptm_bfd_dst_deregister,
d3af6147
RZ		 3716#if HAVE_BFDD > 0
3717 [ZEBRA_BFD_DEST_REPLAY] = zebra_ptm_bfd_dst_replay,
3718#endif /* HAVE_BFDD */
bf094f69
QY		 3719 [ZEBRA_VRF_UNREGISTER] = zread_vrf_unregister,
3720 [ZEBRA_VRF_LABEL] = zread_vrf_label,
3721 [ZEBRA_BFD_CLIENT_REGISTER] = zebra_ptm_bfd_client_register,
bf094f69
QY		 3722 [ZEBRA_INTERFACE_ENABLE_RADV] = zebra_interface_radv_enable,
3723 [ZEBRA_INTERFACE_DISABLE_RADV] = zebra_interface_radv_disable,
31f937fb
SM		 3724 [ZEBRA_SR_POLICY_SET] = zread_sr_policy_set,
3725 [ZEBRA_SR_POLICY_DELETE] = zread_sr_policy_delete,
ea6b290b
RW		 3726 [ZEBRA_MPLS_LABELS_ADD] = zread_mpls_labels_add,
3727 [ZEBRA_MPLS_LABELS_DELETE] = zread_mpls_labels_delete,
3728 [ZEBRA_MPLS_LABELS_REPLACE] = zread_mpls_labels_replace,
bf094f69
QY		 3729 [ZEBRA_IPMR_ROUTE_STATS] = zebra_ipmr_route_stats,
3730 [ZEBRA_LABEL_MANAGER_CONNECT] = zread_label_manager_request,
f533be73 3731 [ZEBRA_LABEL_MANAGER_CONNECT_ASYNC] = zread_label_manager_request,
bf094f69
QY		 3732 [ZEBRA_GET_LABEL_CHUNK] = zread_label_manager_request,
3733 [ZEBRA_RELEASE_LABEL_CHUNK] = zread_label_manager_request,
3734 [ZEBRA_FEC_REGISTER] = zread_fec_register,
3735 [ZEBRA_FEC_UNREGISTER] = zread_fec_unregister,
3736 [ZEBRA_ADVERTISE_DEFAULT_GW] = zebra_vxlan_advertise_gw_macip,
278e26de 3737 [ZEBRA_ADVERTISE_SVI_MACIP] = zebra_vxlan_advertise_svi_macip,
bf094f69
QY		 3738 [ZEBRA_ADVERTISE_SUBNET] = zebra_vxlan_advertise_subnet,
3739 [ZEBRA_ADVERTISE_ALL_VNI] = zebra_vxlan_advertise_all_vni,
ce5160c0
AK		 3740 [ZEBRA_REMOTE_ES_VTEP_ADD] = zebra_evpn_proc_remote_es,
3741 [ZEBRA_REMOTE_ES_VTEP_DEL] = zebra_evpn_proc_remote_es,
7e5b0b2b
MS		 3742 [ZEBRA_REMOTE_VTEP_ADD] = zebra_vxlan_remote_vtep_add_zapi,
3743 [ZEBRA_REMOTE_VTEP_DEL] = zebra_vxlan_remote_vtep_del_zapi,
bf094f69
QY		 3744 [ZEBRA_REMOTE_MACIP_ADD] = zebra_vxlan_remote_macip_add,
3745 [ZEBRA_REMOTE_MACIP_DEL] = zebra_vxlan_remote_macip_del,
3950b52c 3746 [ZEBRA_DUPLICATE_ADDR_DETECTION] = zebra_vxlan_dup_addr_detection,
bf094f69
QY		 3747 [ZEBRA_INTERFACE_SET_MASTER] = zread_interface_set_master,
3748 [ZEBRA_PW_ADD] = zread_pseudowire,
3749 [ZEBRA_PW_DELETE] = zread_pseudowire,
3750 [ZEBRA_PW_SET] = zread_pseudowire,
3751 [ZEBRA_PW_UNSET] = zread_pseudowire,
3752 [ZEBRA_RULE_ADD] = zread_rule,
3753 [ZEBRA_RULE_DELETE] = zread_rule,
3754 [ZEBRA_TABLE_MANAGER_CONNECT] = zread_table_manager_request,
3755 [ZEBRA_GET_TABLE_CHUNK] = zread_table_manager_request,
3756 [ZEBRA_RELEASE_TABLE_CHUNK] = zread_table_manager_request,
3757 [ZEBRA_IPSET_CREATE] = zread_ipset,
3758 [ZEBRA_IPSET_DESTROY] = zread_ipset,
3759 [ZEBRA_IPSET_ENTRY_ADD] = zread_ipset_entry,
3760 [ZEBRA_IPSET_ENTRY_DELETE] = zread_ipset_entry,
3761 [ZEBRA_IPTABLE_ADD] = zread_iptable,
3762 [ZEBRA_IPTABLE_DELETE] = zread_iptable,
fbac9605 3763 [ZEBRA_VXLAN_FLOOD_CONTROL] = zebra_vxlan_flood_control,
ecbbc3a7 3764 [ZEBRA_VXLAN_SG_REPLAY] = zebra_vxlan_sg_replay,
ee235396
SK		 3765 [ZEBRA_MLAG_CLIENT_REGISTER] = zebra_mlag_client_register,
3766 [ZEBRA_MLAG_CLIENT_UNREGISTER] = zebra_mlag_client_unregister,
3767 [ZEBRA_MLAG_FORWARD_MSG] = zebra_mlag_forward_client_msg,
6e68a084
HS		 3768 [ZEBRA_SRV6_MANAGER_GET_LOCATOR_CHUNK] = zread_srv6_manager_request,
3769 [ZEBRA_SRV6_MANAGER_RELEASE_LOCATOR_CHUNK] = zread_srv6_manager_request,
d68e74b4 3770 [ZEBRA_CLIENT_CAPABILITIES] = zread_client_capabilities,
2f35a820 3771 [ZEBRA_NEIGH_DISCOVER] = zread_neigh_discover,
8b2d3a0f 3772 [ZEBRA_NHG_ADD] = zread_nhg_add,
2f35a820 3773 [ZEBRA_NHG_DEL] = zread_nhg_del,
77b38a4a 3774 [ZEBRA_ROUTE_NOTIFY_REQUEST] = zread_route_notify_request,
7bfa7d02
AK		 3775 [ZEBRA_EVPN_REMOTE_NH_ADD] = zebra_evpn_proc_remote_nh,
3776 [ZEBRA_EVPN_REMOTE_NH_DEL] = zebra_evpn_proc_remote_nh,
d603c077
PG		 3777 [ZEBRA_NEIGH_IP_ADD] = zebra_neigh_ip_add,
3778 [ZEBRA_NEIGH_IP_DEL] = zebra_neigh_ip_del,
7723e8d3
PG		 3779 [ZEBRA_NHRP_NEIGH_REGISTER] = zebra_neigh_register,
3780 [ZEBRA_NHRP_NEIGH_UNREGISTER] = zebra_neigh_unregister,
541025d6 3781 [ZEBRA_CONFIGURE_ARP] = zebra_configure_arp,
d17af8dd 3782 [ZEBRA_GRE_GET] = zebra_gre_get,
b716ab61 3783 [ZEBRA_GRE_SOURCE_SET] = zebra_gre_source_set,
2f35a820 3784};
bf094f69 3785
79b3664a
MS		 3786/*
3787 * Process a batch of zapi messages.
3788 */
3789void zserv_handle_commands(struct zserv *client, struct stream_fifo *fifo)
bf094f69 3790{
904e0d88
QY		 3791 struct zmsghdr hdr;
3792 struct zebra_vrf *zvrf;
79b3664a
MS		 3793 struct stream *msg;
3794 struct stream_fifo temp_fifo;
904e0d88 3795
79b3664a 3796 stream_fifo_init(&temp_fifo);
aa8cb964 3797
79b3664a
MS		 3798 while (stream_fifo_head(fifo)) {
3799 msg = stream_fifo_pop(fifo);
bf094f69 3800
79b3664a
MS		 3801 if (STREAM_READABLE(msg) > ZEBRA_MAX_PACKET_SIZ) {
3802 if (IS_ZEBRA_DEBUG_PACKET && IS_ZEBRA_DEBUG_RECV)
3803 zlog_debug(
3804 "ZAPI message is %zu bytes long but the maximum packet size is %u; dropping",
3805 STREAM_READABLE(msg),
3806 ZEBRA_MAX_PACKET_SIZ);
3807 goto continue_loop;
3808 }
3809
3810 zapi_parse_header(msg, &hdr);
3811
ec64a77b
DS		 3812 if (IS_ZEBRA_DEBUG_PACKET && IS_ZEBRA_DEBUG_RECV
3813 && IS_ZEBRA_DEBUG_DETAIL)
79b3664a 3814 zserv_log_message(NULL, msg, &hdr);
49b3b01f 3815
79b3664a 3816 hdr.length -= ZEBRA_HEADER_SIZE;
904e0d88 3817
79b3664a
MS		 3818 /* Before checking for a handler function, check for
3819 * special messages that are handled in another module;
3820 * we'll treat these as opaque.
3821 */
3822 if (zebra_opaque_handles_msgid(hdr.command)) {
3823 /* Reset message buffer */
3824 stream_set_getp(msg, 0);
3825
3826 stream_fifo_push(&temp_fifo, msg);
3827
3828 /* Continue without freeing the message */
3829 msg = NULL;
3830 goto continue_loop;
3831 }
3832
3833 /* lookup vrf */
3834 zvrf = zebra_vrf_lookup_by_id(hdr.vrf_id);
3835 if (!zvrf) {
3836 zserv_error_no_vrf(client, &hdr, msg, zvrf);
3837 goto continue_loop;
3838 }
3839
3840 if (hdr.command >= array_size(zserv_handlers)
3841 || zserv_handlers[hdr.command] == NULL) {
3842 zserv_error_invalid_msg_type(client, &hdr, msg, zvrf);
3843 goto continue_loop;
3844 }
3845
3846 zserv_handlers[hdr.command](client, &hdr, msg, zvrf);
3847
3848continue_loop:
3849 stream_free(msg);
3850 }
904e0d88 3851
79b3664a
MS		 3852 /* Dispatch any special messages from the temp fifo */
3853 if (stream_fifo_head(&temp_fifo) != NULL)
3854 zebra_opaque_enqueue_batch(&temp_fifo);
9ab0b2a3 3855
79b3664a 3856 stream_fifo_deinit(&temp_fifo);
bf094f69 3857}
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