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zebra: remove import check resolution from zebra
[mirror_frr.git] / zebra / zapi_msg.c
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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
224ccf29
DL		 65DEFINE_MTYPE_STATIC(ZEBRA, OPAQUE, "Opaque Data");
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
a36898e7 188 zclient_create_header(s, ZEBRA_INTERFACE_ADD, ifp->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
a36898e7 200 zclient_create_header(s, ZEBRA_INTERFACE_DELETE, ifp->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
a36898e7 240 zclient_create_header(s, ZEBRA_INTERFACE_LINK_PARAMS, ifp->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
a36898e7 302 zclient_create_header(s, cmd, ifp->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
a36898e7 344 zclient_create_header(s, cmd, ifp->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
a36898e7 462 zclient_create_header(s, ZEBRA_INTERFACE_VRF_UPDATE, ifp->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
a36898e7 537 zclient_create_header(s, cmd, ifp->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
MS		 548int zsend_redistribute_route(int cmd, struct zserv *client,
549 const struct prefix *p,
40f321c0
MS		 550 const struct prefix *src_p,
551 const struct route_entry *re)
bf094f69
QY		 552{
553 struct zapi_route api;
554 struct zapi_nexthop *api_nh;
555 struct nexthop *nexthop;
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
QY		 560
561 memset(&api, 0, sizeof(api));
562 api.vrf_id = re->vrf_id;
563 api.type = re->type;
e4081c0e 564 api.safi = SAFI_UNICAST;
bf094f69
QY		 565 api.instance = re->instance;
566 api.flags = re->flags;
567
34fa0870
DS		 568 afi = family2afi(p->family);
569 switch (afi) {
570 case AFI_IP:
571 if (cmd == ZEBRA_REDISTRIBUTE_ROUTE_ADD)
572 client->redist_v4_add_cnt++;
573 else
574 client->redist_v4_del_cnt++;
575 break;
576 case AFI_IP6:
577 if (cmd == ZEBRA_REDISTRIBUTE_ROUTE_ADD)
578 client->redist_v6_add_cnt++;
579 else
580 client->redist_v6_del_cnt++;
581 break;
582 default:
583 break;
584 }
585
bf094f69
QY		 586 /* Prefix. */
587 api.prefix = *p;
588 if (src_p) {
589 SET_FLAG(api.message, ZAPI_MESSAGE_SRCPFX);
590 memcpy(&api.src_prefix, src_p, sizeof(api.src_prefix));
591 }
592
c415d895 593 for (nexthop = re->nhe->nhg.nexthop;
0eb97b86 594 nexthop; nexthop = nexthop->next) {
bf094f69
QY		 595 if (!CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE))
596 continue;
597
598 api_nh = &api.nexthops[count];
599 api_nh->vrf_id = nexthop->vrf_id;
600 api_nh->type = nexthop->type;
bd054c1a 601 api_nh->weight = nexthop->weight;
bf094f69
QY		 602 switch (nexthop->type) {
603 case NEXTHOP_TYPE_BLACKHOLE:
604 api_nh->bh_type = nexthop->bh_type;
605 break;
606 case NEXTHOP_TYPE_IPV4:
607 api_nh->gate.ipv4 = nexthop->gate.ipv4;
608 break;
609 case NEXTHOP_TYPE_IPV4_IFINDEX:
610 api_nh->gate.ipv4 = nexthop->gate.ipv4;
611 api_nh->ifindex = nexthop->ifindex;
612 break;
613 case NEXTHOP_TYPE_IFINDEX:
614 api_nh->ifindex = nexthop->ifindex;
615 break;
616 case NEXTHOP_TYPE_IPV6:
617 api_nh->gate.ipv6 = nexthop->gate.ipv6;
618 break;
619 case NEXTHOP_TYPE_IPV6_IFINDEX:
620 api_nh->gate.ipv6 = nexthop->gate.ipv6;
621 api_nh->ifindex = nexthop->ifindex;
622 }
623 count++;
624 }
625
9a0d4dd3
DS		 626 /* Nexthops. */
627 if (count) {
628 SET_FLAG(api.message, ZAPI_MESSAGE_NEXTHOP);
629 api.nexthop_num = count;
630 }
631
bf094f69
QY		 632 /* Attributes. */
633 SET_FLAG(api.message, ZAPI_MESSAGE_DISTANCE);
634 api.distance = re->distance;
635 SET_FLAG(api.message, ZAPI_MESSAGE_METRIC);
636 api.metric = re->metric;
637 if (re->tag) {
638 SET_FLAG(api.message, ZAPI_MESSAGE_TAG);
639 api.tag = re->tag;
640 }
641 SET_FLAG(api.message, ZAPI_MESSAGE_MTU);
642 api.mtu = re->mtu;
643
f3f45626 644 struct stream *s = stream_new(stream_size);
bf094f69
QY		 645
646 /* Encode route and send. */
647 if (zapi_route_encode(cmd, s, &api) < 0) {
648 stream_free(s);
649 return -1;
650 }
651
2dbe669b
DA		 652 if (IS_ZEBRA_DEBUG_SEND)
653 zlog_debug("%s: %s to client %s: type %s, vrf_id %d, p %pFX",
bf094f69
QY		 654 __func__, zserv_command_string(cmd),
655 zebra_route_string(client->proto),
656 zebra_route_string(api.type), api.vrf_id,
2dbe669b 657 &api.prefix);
21ccc0cf 658 return zserv_send_message(client, s);
bf094f69
QY		 659}
660
661/*
662 * Modified version of zsend_ipv4_nexthop_lookup(): Query unicast rib if
663 * nexthop is not found on mrib. Returns both route metric and protocol
664 * distance.
665 */
666static int zsend_ipv4_nexthop_lookup_mrib(struct zserv *client,
667 struct in_addr addr,
668 struct route_entry *re,
669 struct zebra_vrf *zvrf)
670{
671 struct stream *s;
672 unsigned long nump;
673 uint8_t num;
674 struct nexthop *nexthop;
675
676 /* Get output stream. */
677 s = stream_new(ZEBRA_MAX_PACKET_SIZ);
678 stream_reset(s);
679
680 /* Fill in result. */
681 zclient_create_header(s, ZEBRA_IPV4_NEXTHOP_LOOKUP_MRIB, zvrf_id(zvrf));
682 stream_put_in_addr(s, &addr);
683
684 if (re) {
b59839af
DS		 685 struct nexthop_group *nhg;
686
bf094f69
QY		 687 stream_putc(s, re->distance);
688 stream_putl(s, re->metric);
689 num = 0;
8b1766b1
QY		 690 /* remember position for nexthop_num */
691 nump = stream_get_endp(s);
692 /* reserve room for nexthop_num */
693 stream_putc(s, 0);
b59839af
DS		 694 nhg = rib_get_fib_nhg(re);
695 for (ALL_NEXTHOPS_PTR(nhg, nexthop)) {
696 if (rnh_nexthop_valid(re, nexthop))
bf094f69 697 num += zserv_encode_nexthop(s, nexthop);
b59839af 698 }
bf094f69 699
8b1766b1
QY		 700 /* store nexthop_num */
701 stream_putc_at(s, nump, num);
bf094f69
QY		 702 } else {
703 stream_putc(s, 0); /* distance */
704 stream_putl(s, 0); /* metric */
705 stream_putc(s, 0); /* nexthop_num */
706 }
707
708 stream_putw_at(s, 0, stream_get_endp(s));
709
21ccc0cf 710 return zserv_send_message(client, s);
bf094f69
QY		 711}
712
ee94437e
MS		 713int zsend_nhg_notify(uint16_t type, uint16_t instance, uint32_t session_id,
714 uint32_t id, enum zapi_nhg_notify_owner note)
2f35a820
DS		 715{
716 struct zserv *client;
717 struct stream *s;
718
ee94437e 719 client = zserv_find_client_session(type, instance, session_id);
2f35a820
DS		 720 if (!client) {
721 if (IS_ZEBRA_DEBUG_PACKET) {
722 zlog_debug("Not Notifying Owner: %u(%u) about %u(%d)",
723 type, instance, id, note);
724 }
725 return 0;
726 }
727
ee94437e 728 if (IS_ZEBRA_DEBUG_SEND)
04bec7b2
MS		 729 zlog_debug("%s: type %d, id %d, note %s",
730 __func__, type, id, zapi_nhg_notify_owner2str(note));
ee94437e 731
2f35a820
DS		 732 s = stream_new(ZEBRA_MAX_PACKET_SIZ);
733 stream_reset(s);
734
735 zclient_create_header(s, ZEBRA_NHG_NOTIFY_OWNER, VRF_DEFAULT);
736
2f35a820 737 stream_put(s, &note, sizeof(note));
2c7819b9 738 stream_putl(s, id);
2f35a820
DS		 739
740 stream_putw_at(s, 0, stream_get_endp(s));
741
742 return zserv_send_message(client, s);
743}
744
86391e56
MS		 745/*
746 * Common utility send route notification, called from a path using a
747 * route_entry and from a path using a dataplane context.
748 */
749static int route_notify_internal(const struct prefix *p, int type,
750 uint16_t instance, vrf_id_t vrf_id,
751 uint32_t table_id,
77b38a4a
S		 752 enum zapi_route_notify_owner note,
753 afi_t afi, safi_t safi)
bf094f69
QY		 754{
755 struct zserv *client;
756 struct stream *s;
757 uint8_t blen;
758
86391e56 759 client = zserv_find_client(type, instance);
bf094f69 760 if (!client || !client->notify_owner) {
2dbe669b 761 if (IS_ZEBRA_DEBUG_PACKET)
bf094f69 762 zlog_debug(
2dbe669b
DA		 763 "Not Notifying Owner: %s about prefix %pFX(%u) %d vrf: %u",
764 zebra_route_string(type), p, table_id, note,
765 vrf_id);
bf094f69
QY		 766 return 0;
767 }
768
2dbe669b
DA		 769 if (IS_ZEBRA_DEBUG_PACKET)
770 zlog_debug(
771 "Notifying Owner: %s about prefix %pFX(%u) %d vrf: %u",
772 zebra_route_string(type), p, table_id, note, vrf_id);
bf094f69 773
55e74ca9
MS		 774 /* We're just allocating a small-ish buffer here, since we only
775 * encode a small amount of data.
776 */
777 s = stream_new(ZEBRA_SMALL_PACKET_SIZE);
778
bf094f69
QY		 779 stream_reset(s);
780
86391e56 781 zclient_create_header(s, ZEBRA_ROUTE_NOTIFY_OWNER, vrf_id);
bf094f69
QY		 782
783 stream_put(s, &note, sizeof(note));
784
785 stream_putc(s, p->family);
786
787 blen = prefix_blen(p);
788 stream_putc(s, p->prefixlen);
789 stream_put(s, &p->u.prefix, blen);
790
86391e56 791 stream_putl(s, table_id);
bf094f69 792
77b38a4a
S		 793 /* Encode AFI, SAFI in the message */
794 stream_putc(s, afi);
795 stream_putc(s, safi);
796
bf094f69
QY		 797 stream_putw_at(s, 0, stream_get_endp(s));
798
21ccc0cf 799 return zserv_send_message(client, s);
bf094f69
QY		 800}
801
86391e56 802int zsend_route_notify_owner(struct route_entry *re, const struct prefix *p,
77b38a4a
S		 803 enum zapi_route_notify_owner note,
804 afi_t afi, safi_t safi)
86391e56
MS		 805{
806 return (route_notify_internal(p, re->type, re->instance, re->vrf_id,
77b38a4a 807 re->table, note, afi, safi));
86391e56
MS		 808}
809
7cdb1a84
MS		 810/*
811 * Route-owner notification using info from dataplane update context.
812 */
25779064 813int zsend_route_notify_owner_ctx(const struct zebra_dplane_ctx *ctx,
7cdb1a84
MS		 814 enum zapi_route_notify_owner note)
815{
816 return (route_notify_internal(dplane_ctx_get_dest(ctx),
817 dplane_ctx_get_type(ctx),
818 dplane_ctx_get_instance(ctx),
819 dplane_ctx_get_vrf(ctx),
820 dplane_ctx_get_table(ctx),
77b38a4a
S		 821 note,
822 dplane_ctx_get_afi(ctx),
823 dplane_ctx_get_safi(ctx)));
824}
825
826static void zread_route_notify_request(ZAPI_HANDLER_ARGS)
827{
828 uint8_t notify;
829
830 STREAM_GETC(msg, notify);
831 client->notify_owner = notify;
832stream_failure:
833 return;
86391e56
MS		 834}
835
f62e5480 836void zsend_rule_notify_owner(const struct zebra_dplane_ctx *ctx,
bf094f69
QY		 837 enum zapi_rule_notify_owner note)
838{
839 struct listnode *node;
840 struct zserv *client;
841 struct stream *s;
842
843 if (IS_ZEBRA_DEBUG_PACKET)
f62e5480
JU		 844 zlog_debug("%s: Notifying %u", __func__,
845 dplane_ctx_rule_get_unique(ctx));
bf094f69 846
161e9ab7 847 for (ALL_LIST_ELEMENTS_RO(zrouter.client_list, node, client)) {
f62e5480 848 if (dplane_ctx_rule_get_sock(ctx) == client->sock)
bf094f69
QY		 849 break;
850 }
851
852 if (!client)
853 return;
854
855 s = stream_new(ZEBRA_MAX_PACKET_SIZ);
856
857 zclient_create_header(s, ZEBRA_RULE_NOTIFY_OWNER, VRF_DEFAULT);
858 stream_put(s, &note, sizeof(note));
f62e5480
JU		 859 stream_putl(s, dplane_ctx_rule_get_seq(ctx));
860 stream_putl(s, dplane_ctx_rule_get_priority(ctx));
861 stream_putl(s, dplane_ctx_rule_get_unique(ctx));
58a1d249 862 stream_put(s, dplane_ctx_rule_get_ifname(ctx), INTERFACE_NAMSIZ);
bf094f69
QY		 863
864 stream_putw_at(s, 0, stream_get_endp(s));
865
21ccc0cf 866 zserv_send_message(client, s);
bf094f69
QY		 867}
868
ef524230 869void zsend_iptable_notify_owner(const struct zebra_dplane_ctx *ctx,
33c08518 870 enum zapi_iptable_notify_owner note)
bf094f69
QY		 871{
872 struct listnode *node;
873 struct zserv *client;
874 struct stream *s;
ef524230
PG		 875 struct zebra_pbr_iptable ipt;
876 uint16_t cmd = ZEBRA_IPTABLE_NOTIFY_OWNER;
877
878 if (!dplane_ctx_get_pbr_iptable(ctx, &ipt))
879 return;
bf094f69
QY		 880
881 if (IS_ZEBRA_DEBUG_PACKET)
ef524230
PG		 882 zlog_debug("%s: Notifying %s id %u note %u", __func__,
883 zserv_command_string(cmd), ipt.unique, note);
bf094f69 884
161e9ab7 885 for (ALL_LIST_ELEMENTS_RO(zrouter.client_list, node, client)) {
ef524230 886 if (ipt.sock == client->sock)
bf094f69
QY		 887 break;
888 }
889
890 if (!client)
891 return;
892
893 s = stream_new(ZEBRA_MAX_PACKET_SIZ);
894
5162e000 895 zclient_create_header(s, cmd, VRF_DEFAULT);
bf094f69 896 stream_put(s, &note, sizeof(note));
ef524230
PG		 897 stream_putl(s, ipt.unique);
898 stream_put(s, ipt.ipset_name, ZEBRA_IPSET_NAME_SIZE);
bf094f69
QY		 899 stream_putw_at(s, 0, stream_get_endp(s));
900
21ccc0cf 901 zserv_send_message(client, s);
bf094f69
QY		 902}
903
33c08518
DS		 904void zsend_ipset_notify_owner(const struct zebra_dplane_ctx *ctx,
905 enum zapi_ipset_notify_owner note)
bf094f69
QY		 906{
907 struct listnode *node;
908 struct zserv *client;
909 struct stream *s;
ef524230
PG		 910 struct zebra_pbr_ipset ipset;
911 uint16_t cmd = ZEBRA_IPSET_NOTIFY_OWNER;
912
913 if (!dplane_ctx_get_pbr_ipset(ctx, &ipset))
914 return;
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);
bf094f69 931 stream_put(s, &note, sizeof(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
ef524230
PG		 949 if (!dplane_ctx_get_pbr_ipset_entry(ctx, &ipent))
950 return;
951 if (!dplane_ctx_get_pbr_ipset(ctx, &ipset))
5162e000 952 return;
bf094f69
QY		 953
954 if (IS_ZEBRA_DEBUG_PACKET)
5162e000 955 zlog_debug("%s: Notifying %s id %u note %u", __func__,
ef524230 956 zserv_command_string(cmd), ipent.unique, note);
bf094f69 957
161e9ab7 958 for (ALL_LIST_ELEMENTS_RO(zrouter.client_list, node, client)) {
ef524230 959 if (ipent.sock == client->sock)
bf094f69
QY		 960 break;
961 }
962
963 if (!client)
964 return;
965
966 s = stream_new(ZEBRA_MAX_PACKET_SIZ);
967
5162e000 968 zclient_create_header(s, cmd, VRF_DEFAULT);
bf094f69 969 stream_put(s, &note, sizeof(note));
ef524230
PG		 970 stream_putl(s, ipent.unique);
971 stream_put(s, ipset.ipset_name, ZEBRA_IPSET_NAME_SIZE);
bf094f69
QY		 972 stream_putw_at(s, 0, stream_get_endp(s));
973
21ccc0cf 974 zserv_send_message(client, s);
bf094f69
QY		 975}
976
7723e8d3
PG		 977void zsend_nhrp_neighbor_notify(int cmd, struct interface *ifp,
978 struct ipaddr *ipaddr, int ndm_state,
d603c077 979 union sockunion *link_layer_ipv4)
7723e8d3
PG		 980{
981 struct stream *s;
982 struct listnode *node, *nnode;
983 struct zserv *client;
984 afi_t afi;
d603c077 985 union sockunion ip;
7723e8d3
PG		 986
987 if (IS_ZEBRA_DEBUG_PACKET)
7d7be47e 988 zlog_debug("%s: Notifying Neighbor entry (%u)", __func__, cmd);
7723e8d3 989
d603c077
PG		 990 sockunion_family(&ip) = ipaddr_family(ipaddr);
991 afi = family2afi(sockunion_family(&ip));
992 memcpy((char *)sockunion_get_addr(&ip), &ipaddr->ip.addr,
993 family2addrsize(sockunion_family(&ip)));
994
7723e8d3
PG		 995 for (ALL_LIST_ELEMENTS(zrouter.client_list, node, nnode, client)) {
996 if (!vrf_bitmap_check(client->nhrp_neighinfo[afi], ifp->vrf_id))
997 continue;
998
999 s = stream_new(ZEBRA_MAX_PACKET_SIZ);
c4e1fd52
PG		 1000 zclient_neigh_ip_encode(s, cmd, &ip, link_layer_ipv4, ifp,
1001 ndm_state);
7723e8d3 1002 stream_putw_at(s, 0, stream_get_endp(s));
7723e8d3
PG		 1003 zserv_send_message(client, s);
1004 }
1005}
1006
1007
98a3fb0a
SM		 1008/* Router-id is updated. Send ZEBRA_ROUTER_ID_UPDATE to client. */
1009int zsend_router_id_update(struct zserv *client, afi_t afi, struct prefix *p,
bf094f69
QY		 1010 vrf_id_t vrf_id)
1011{
1012 int blen;
98a3fb0a 1013 struct stream *s;
bf094f69
QY		 1014
1015 /* Check this client need interface information. */
98a3fb0a 1016 if (!vrf_bitmap_check(client->ridinfo[afi], vrf_id))
bf094f69
QY		 1017 return 0;
1018
98a3fb0a 1019 s = stream_new(ZEBRA_MAX_PACKET_SIZ);
bf094f69
QY		 1020
1021 /* Message type. */
1022 zclient_create_header(s, ZEBRA_ROUTER_ID_UPDATE, vrf_id);
1023
1024 /* Prefix information. */
1025 stream_putc(s, p->family);
1026 blen = prefix_blen(p);
1027 stream_put(s, &p->u.prefix, blen);
1028 stream_putc(s, p->prefixlen);
1029
1030 /* Write packet size. */
1031 stream_putw_at(s, 0, stream_get_endp(s));
1032
21ccc0cf 1033 return zserv_send_message(client, s);
bf094f69
QY		 1034}
1035
1036/*
1037 * Function used by Zebra to send a PW status update to LDP daemon
1038 */
1039int zsend_pw_update(struct zserv *client, struct zebra_pw *pw)
1040{
1041 struct stream *s = stream_new(ZEBRA_MAX_PACKET_SIZ);
1042
1043 zclient_create_header(s, ZEBRA_PW_STATUS_UPDATE, pw->vrf_id);
1044 stream_write(s, pw->ifname, IF_NAMESIZE);
1045 stream_putl(s, pw->ifindex);
1046 stream_putl(s, pw->status);
1047
1048 /* Put length at the first point of the stream. */
1049 stream_putw_at(s, 0, stream_get_endp(s));
1050
21ccc0cf 1051 return zserv_send_message(client, s);
bf094f69
QY		 1052}
1053
1054/* Send response to a get label chunk request to client */
e11d7c96 1055int zsend_assign_label_chunk_response(struct zserv *client, vrf_id_t vrf_id,
e11d7c96 1056 struct label_manager_chunk *lmc)
bf094f69 1057{
bf094f69
QY		 1058 struct stream *s = stream_new(ZEBRA_MAX_PACKET_SIZ);
1059
1060 zclient_create_header(s, ZEBRA_GET_LABEL_CHUNK, vrf_id);
f004f7c3 1061 /* proto */
4cebdb9b 1062 stream_putc(s, client->proto);
f004f7c3 1063 /* instance */
4cebdb9b 1064 stream_putw(s, client->instance);
bf094f69
QY		 1065
1066 if (lmc) {
1067 /* keep */
1068 stream_putc(s, lmc->keep);
1069 /* start and end labels */
1070 stream_putl(s, lmc->start);
1071 stream_putl(s, lmc->end);
1072 }
1073
1074 /* Write packet size. */
1075 stream_putw_at(s, 0, stream_get_endp(s));
1076
732d22cb 1077 return zserv_send_message(client, s);
bf094f69
QY		 1078}
1079
1080/* Send response to a label manager connect request to client */
e11d7c96
EDP		 1081int zsend_label_manager_connect_response(struct zserv *client, vrf_id_t vrf_id,
1082 unsigned short result)
bf094f69 1083{
bf094f69
QY		 1084 struct stream *s = stream_new(ZEBRA_MAX_PACKET_SIZ);
1085
1086 zclient_create_header(s, ZEBRA_LABEL_MANAGER_CONNECT, vrf_id);
1087
5dffb0e9
FR		 1088 /* proto */
1089 stream_putc(s, client->proto);
1090
1091 /* instance */
1092 stream_putw(s, client->instance);
1093
bf094f69
QY		 1094 /* result */
1095 stream_putc(s, result);
1096
1097 /* Write packet size. */
1098 stream_putw_at(s, 0, stream_get_endp(s));
1099
732d22cb 1100 return zserv_send_message(client, s);
bf094f69
QY		 1101}
1102
1103/* Send response to a get table chunk request to client */
1104static int zsend_assign_table_chunk_response(struct zserv *client,
1105 vrf_id_t vrf_id,
1106 struct table_manager_chunk *tmc)
1107{
1108 struct stream *s = stream_new(ZEBRA_MAX_PACKET_SIZ);
1109
1110 zclient_create_header(s, ZEBRA_GET_TABLE_CHUNK, vrf_id);
1111
1112 if (tmc) {
1113 /* start and end labels */
1114 stream_putl(s, tmc->start);
1115 stream_putl(s, tmc->end);
1116 }
1117
1118 /* Write packet size. */
1119 stream_putw_at(s, 0, stream_get_endp(s));
1120
21ccc0cf 1121 return zserv_send_message(client, s);
bf094f69
QY		 1122}
1123
1124static int zsend_table_manager_connect_response(struct zserv *client,
1125 vrf_id_t vrf_id,
1126 uint16_t result)
1127{
1128 struct stream *s = stream_new(ZEBRA_MAX_PACKET_SIZ);
1129
1130 zclient_create_header(s, ZEBRA_TABLE_MANAGER_CONNECT, vrf_id);
1131
1132 /* result */
1133 stream_putc(s, result);
1134
1135 stream_putw_at(s, 0, stream_get_endp(s));
1136
21ccc0cf 1137 return zserv_send_message(client, s);
bf094f69
QY		 1138}
1139
f5ca329b
HS		 1140/* SRv6 locator add notification from zebra daemon. */
1141int zsend_zebra_srv6_locator_add(struct zserv *client, struct srv6_locator *loc)
1142{
1143 struct stream *s = stream_new(ZEBRA_MAX_PACKET_SIZ);
1144
1145 zclient_create_header(s, ZEBRA_SRV6_LOCATOR_ADD, VRF_DEFAULT);
1146 zapi_srv6_locator_encode(s, loc);
1147 stream_putw_at(s, 0, stream_get_endp(s));
1148
1149 return zserv_send_message(client, s);
1150}
1151
1152/* SRv6 locator delete notification from zebra daemon. */
1153int zsend_zebra_srv6_locator_delete(struct zserv *client,
1154 struct srv6_locator *loc)
1155{
1156 struct stream *s = stream_new(ZEBRA_MAX_PACKET_SIZ);
1157
1158 zclient_create_header(s, ZEBRA_SRV6_LOCATOR_DELETE, VRF_DEFAULT);
1159 zapi_srv6_locator_encode(s, loc);
1160 stream_putw_at(s, 0, stream_get_endp(s));
1161
1162 return zserv_send_message(client, s);
1163}
1164
bf094f69
QY		 1165/* Inbound message handling ------------------------------------------------ */
1166
2b64873d 1167const int cmd2type[] = {
bf094f69
QY		 1168 [ZEBRA_NEXTHOP_REGISTER] = RNH_NEXTHOP_TYPE,
1169 [ZEBRA_NEXTHOP_UNREGISTER] = RNH_NEXTHOP_TYPE,
bf094f69
QY		 1170};
1171
1172/* Nexthop register */
1173static void zread_rnh_register(ZAPI_HANDLER_ARGS)
1174{
1175 struct rnh *rnh;
1176 struct stream *s;
1177 struct prefix p;
1178 unsigned short l = 0;
1179 uint8_t flags = 0;
ed6cec97 1180 uint8_t resolve_via_default;
bf094f69 1181 uint16_t type = cmd2type[hdr->command];
1d30d1f4 1182 bool exist;
906b54dd
DS		 1183 bool flag_changed = false;
1184 uint8_t orig_flags;
bf094f69
QY		 1185
1186 if (IS_ZEBRA_DEBUG_NHT)
1187 zlog_debug(
63efca0e 1188 "rnh_register msg from client %s: hdr->length=%d, type=%s vrf=%u",
bf094f69
QY		 1189 zebra_route_string(client->proto), hdr->length,
1190 (type == RNH_NEXTHOP_TYPE) ? "nexthop" : "route",
1191 zvrf->vrf->vrf_id);
1192
1193 s = msg;
1194
469d6277
DS		 1195 if (!client->nh_reg_time)
1196 client->nh_reg_time = monotime(NULL);
bf094f69
QY		 1197
1198 while (l < hdr->length) {
1199 STREAM_GETC(s, flags);
ed6cec97 1200 STREAM_GETC(s, resolve_via_default);
bf094f69
QY		 1201 STREAM_GETW(s, p.family);
1202 STREAM_GETC(s, p.prefixlen);
ed6cec97 1203 l += 5;
bf094f69 1204 if (p.family == AF_INET) {
ab5990d8 1205 client->v4_nh_watch_add_cnt++;
bf094f69 1206 if (p.prefixlen > IPV4_MAX_BITLEN) {
9df414fe 1207 zlog_debug(
bf094f69 1208 "%s: Specified prefix hdr->length %d is too large for a v4 address",
15569c58 1209 __func__, p.prefixlen);
bf094f69
QY		 1210 return;
1211 }
1212 STREAM_GET(&p.u.prefix4.s_addr, s, IPV4_MAX_BYTELEN);
1213 l += IPV4_MAX_BYTELEN;
1214 } else if (p.family == AF_INET6) {
ab5990d8 1215 client->v6_nh_watch_add_cnt++;
bf094f69 1216 if (p.prefixlen > IPV6_MAX_BITLEN) {
9df414fe 1217 zlog_debug(
bf094f69 1218 "%s: Specified prefix hdr->length %d is to large for a v6 address",
15569c58 1219 __func__, p.prefixlen);
bf094f69
QY		 1220 return;
1221 }
1222 STREAM_GET(&p.u.prefix6, s, IPV6_MAX_BYTELEN);
1223 l += IPV6_MAX_BYTELEN;
1224 } else {
af4c2728 1225 flog_err(
e914ccbe 1226 EC_ZEBRA_UNKNOWN_FAMILY,
1d5453d6 1227 "rnh_register: Received unknown family type %d",
bf094f69
QY		 1228 p.family);
1229 return;
1230 }
1d30d1f4
DS		 1231 rnh = zebra_add_rnh(&p, zvrf_id(zvrf), type, &exist);
1232 if (!rnh)
1233 return;
1234
906b54dd 1235 orig_flags = rnh->flags;
bf094f69
QY		 1236 if (type == RNH_NEXTHOP_TYPE) {
1237 if (flags
1238 && !CHECK_FLAG(rnh->flags, ZEBRA_NHT_CONNECTED))
1239 SET_FLAG(rnh->flags, ZEBRA_NHT_CONNECTED);
1240 else if (!flags
1241 && CHECK_FLAG(rnh->flags, ZEBRA_NHT_CONNECTED))
1242 UNSET_FLAG(rnh->flags, ZEBRA_NHT_CONNECTED);
bf094f69
QY		 1243 }
1244
ed6cec97
DS		 1245 if (resolve_via_default)
1246 SET_FLAG(rnh->flags, ZEBRA_NHT_RESOLVE_VIA_DEFAULT);
1247
906b54dd
DS		 1248 if (orig_flags != rnh->flags)
1249 flag_changed = true;
1250
bf094f69 1251 /* Anything not AF_INET/INET6 has been filtered out above */
906b54dd 1252 if (!exist || flag_changed)
73bf60a0
RW		 1253 zebra_evaluate_rnh(zvrf, family2afi(p.family), 1, type,
1254 &p);
dd25a6b3
DS		 1255
1256 zebra_add_rnh_client(rnh, client, type, zvrf_id(zvrf));
bf094f69
QY		 1257 }
1258
1259stream_failure:
1260 return;
1261}
1262
1263/* Nexthop register */
1264static void zread_rnh_unregister(ZAPI_HANDLER_ARGS)
1265{
1266 struct rnh *rnh;
1267 struct stream *s;
1268 struct prefix p;
1269 unsigned short l = 0;
1270 uint16_t type = cmd2type[hdr->command];
1271
1272 if (IS_ZEBRA_DEBUG_NHT)
1273 zlog_debug(
63efca0e 1274 "rnh_unregister msg from client %s: hdr->length=%d vrf: %u",
bf094f69
QY		 1275 zebra_route_string(client->proto), hdr->length,
1276 zvrf->vrf->vrf_id);
1277
1278 s = msg;
1279
1280 while (l < hdr->length) {
1281 uint8_t flags;
1282
ed6cec97
DS		 1283 STREAM_GETC(s, flags);
1284 if (flags != 0)
1285 goto stream_failure;
bf094f69
QY		 1286 STREAM_GETC(s, flags);
1287 if (flags != 0)
1288 goto stream_failure;
1289
1290 STREAM_GETW(s, p.family);
1291 STREAM_GETC(s, p.prefixlen);
ed6cec97 1292 l += 5;
bf094f69 1293 if (p.family == AF_INET) {
ab5990d8 1294 client->v4_nh_watch_rem_cnt++;
bf094f69 1295 if (p.prefixlen > IPV4_MAX_BITLEN) {
9df414fe 1296 zlog_debug(
bf094f69 1297 "%s: Specified prefix hdr->length %d is to large for a v4 address",
15569c58 1298 __func__, p.prefixlen);
bf094f69
QY		 1299 return;
1300 }
1301 STREAM_GET(&p.u.prefix4.s_addr, s, IPV4_MAX_BYTELEN);
1302 l += IPV4_MAX_BYTELEN;
1303 } else if (p.family == AF_INET6) {
ab5990d8 1304 client->v6_nh_watch_rem_cnt++;
bf094f69 1305 if (p.prefixlen > IPV6_MAX_BITLEN) {
9df414fe 1306 zlog_debug(
bf094f69 1307 "%s: Specified prefix hdr->length %d is to large for a v6 address",
15569c58 1308 __func__, p.prefixlen);
bf094f69
QY		 1309 return;
1310 }
1311 STREAM_GET(&p.u.prefix6, s, IPV6_MAX_BYTELEN);
1312 l += IPV6_MAX_BYTELEN;
1313 } else {
af4c2728 1314 flog_err(
e914ccbe 1315 EC_ZEBRA_UNKNOWN_FAMILY,
1d5453d6 1316 "rnh_register: Received unknown family type %d",
bf094f69
QY		 1317 p.family);
1318 return;
1319 }
1320 rnh = zebra_lookup_rnh(&p, zvrf_id(zvrf), type);
1321 if (rnh) {
1322 client->nh_dereg_time = monotime(NULL);
1323 zebra_remove_rnh_client(rnh, client, type);
1324 }
1325 }
1326stream_failure:
1327 return;
1328}
1329
1330#define ZEBRA_MIN_FEC_LENGTH 5
1331
1332/* FEC register */
1333static void zread_fec_register(ZAPI_HANDLER_ARGS)
1334{
1335 struct stream *s;
1336 unsigned short l = 0;
1337 struct prefix p;
1338 uint16_t flags;
57592a53 1339 uint32_t label = MPLS_INVALID_LABEL;
bf094f69
QY		 1340 uint32_t label_index = MPLS_INVALID_LABEL_INDEX;
1341
1342 s = msg;
1343 zvrf = vrf_info_lookup(VRF_DEFAULT);
1344 if (!zvrf)
8b1766b1 1345 return;
bf094f69
QY		 1346
1347 /*
1348 * The minimum amount of data that can be sent for one fec
1349 * registration
1350 */
1351 if (hdr->length < ZEBRA_MIN_FEC_LENGTH) {
af4c2728 1352 flog_err(
e914ccbe 1353 EC_ZEBRA_IRDP_LEN_MISMATCH,
bf094f69
QY		 1354 "fec_register: Received a fec register of hdr->length %d, it is of insufficient size to properly decode",
1355 hdr->length);
1356 return;
1357 }
1358
1359 while (l < hdr->length) {
1360 STREAM_GETW(s, flags);
1361 memset(&p, 0, sizeof(p));
1362 STREAM_GETW(s, p.family);
1363 if (p.family != AF_INET && p.family != AF_INET6) {
af4c2728 1364 flog_err(
e914ccbe 1365 EC_ZEBRA_UNKNOWN_FAMILY,
1d5453d6 1366 "fec_register: Received unknown family type %d",
bf094f69
QY		 1367 p.family);
1368 return;
1369 }
1370 STREAM_GETC(s, p.prefixlen);
1371 if ((p.family == AF_INET && p.prefixlen > IPV4_MAX_BITLEN)
1372 || (p.family == AF_INET6
1373 && p.prefixlen > IPV6_MAX_BITLEN)) {
9df414fe 1374 zlog_debug(
bf094f69 1375 "%s: Specified prefix hdr->length: %d is to long for %d",
15569c58 1376 __func__, p.prefixlen, p.family);
bf094f69
QY		 1377 return;
1378 }
1379 l += 5;
1380 STREAM_GET(&p.u.prefix, s, PSIZE(p.prefixlen));
1381 l += PSIZE(p.prefixlen);
57592a53
AD		 1382 if (flags & ZEBRA_FEC_REGISTER_LABEL) {
1383 STREAM_GETL(s, label);
1384 l += 4;
1385 } else if (flags & ZEBRA_FEC_REGISTER_LABEL_INDEX) {
bf094f69
QY		 1386 STREAM_GETL(s, label_index);
1387 l += 4;
57592a53
AD		 1388 }
1389
1390 zebra_mpls_fec_register(zvrf, &p, label, label_index, client);
bf094f69
QY		 1391 }
1392
1393stream_failure:
1394 return;
1395}
1396
1397/* FEC unregister */
1398static void zread_fec_unregister(ZAPI_HANDLER_ARGS)
1399{
1400 struct stream *s;
1401 unsigned short l = 0;
1402 struct prefix p;
1403 uint16_t flags;
1404
1405 s = msg;
1406 zvrf = vrf_info_lookup(VRF_DEFAULT);
1407 if (!zvrf)
8b1766b1 1408 return;
bf094f69
QY		 1409
1410 /*
1411 * The minimum amount of data that can be sent for one
1412 * fec unregistration
1413 */
1414 if (hdr->length < ZEBRA_MIN_FEC_LENGTH) {
af4c2728 1415 flog_err(
e914ccbe 1416 EC_ZEBRA_IRDP_LEN_MISMATCH,
bf094f69
QY		 1417 "fec_unregister: Received a fec unregister of hdr->length %d, it is of insufficient size to properly decode",
1418 hdr->length);
1419 return;
1420 }
1421
1422 while (l < hdr->length) {
1423 STREAM_GETW(s, flags);
1424 if (flags != 0)
1425 goto stream_failure;
1426
1427 memset(&p, 0, sizeof(p));
1428 STREAM_GETW(s, p.family);
1429 if (p.family != AF_INET && p.family != AF_INET6) {
af4c2728 1430 flog_err(
e914ccbe 1431 EC_ZEBRA_UNKNOWN_FAMILY,
1d5453d6 1432 "fec_unregister: Received unknown family type %d",
bf094f69
QY		 1433 p.family);
1434 return;
1435 }
1436 STREAM_GETC(s, p.prefixlen);
1437 if ((p.family == AF_INET && p.prefixlen > IPV4_MAX_BITLEN)
1438 || (p.family == AF_INET6
1439 && p.prefixlen > IPV6_MAX_BITLEN)) {
9df414fe 1440 zlog_debug(
bf094f69 1441 "%s: Received prefix hdr->length %d which is greater than %d can support",
15569c58 1442 __func__, p.prefixlen, p.family);
bf094f69
QY		 1443 return;
1444 }
1445 l += 5;
1446 STREAM_GET(&p.u.prefix, s, PSIZE(p.prefixlen));
1447 l += PSIZE(p.prefixlen);
1448 zebra_mpls_fec_unregister(zvrf, &p, client);
1449 }
1450
1451stream_failure:
1452 return;
1453}
1454
1455
1456/*
1457 * Register zebra server interface information.
1458 * Send current all interface and address information.
1459 */
1460static void zread_interface_add(ZAPI_HANDLER_ARGS)
1461{
1462 struct vrf *vrf;
1463 struct interface *ifp;
1464
9212d1e1 1465 vrf_id_t vrf_id = zvrf_id(zvrf);
1466 if (vrf_id != VRF_DEFAULT && vrf_id != VRF_UNKNOWN) {
1467 FOR_ALL_INTERFACES (zvrf->vrf, ifp) {
1468 /* Skip pseudo interface. */
1469 if (!CHECK_FLAG(ifp->status, ZEBRA_INTERFACE_ACTIVE))
1470 continue;
1471
1472 zsend_interface_add(client, ifp);
1473 zsend_interface_link_params(client, ifp);
1474 zsend_interface_addresses(client, ifp);
1475 }
1476 return;
1477 }
1478
bf094f69
QY		 1479 RB_FOREACH (vrf, vrf_id_head, &vrfs_by_id) {
1480 FOR_ALL_INTERFACES (vrf, ifp) {
1481 /* Skip pseudo interface. */
1482 if (!CHECK_FLAG(ifp->status, ZEBRA_INTERFACE_ACTIVE))
1483 continue;
1484
1485 zsend_interface_add(client, ifp);
27ecbea3 1486 zsend_interface_link_params(client, ifp);
bf094f69
QY		 1487 zsend_interface_addresses(client, ifp);
1488 }
1489 }
1490}
1491
1492/* Unregister zebra server interface information. */
1493static void zread_interface_delete(ZAPI_HANDLER_ARGS)
1494{
bf094f69
QY		 1495}
1496
c3bd894e
QY		 1497/*
1498 * Handle message requesting interface be set up or down.
1499 */
1500static void zread_interface_set_protodown(ZAPI_HANDLER_ARGS)
1501{
1502 ifindex_t ifindex;
1503 struct interface *ifp;
1504 char down;
1505
1506 STREAM_GETL(msg, ifindex);
1507 STREAM_GETC(msg, down);
1508
1509 /* set ifdown */
1510 ifp = if_lookup_by_index_per_ns(zebra_ns_lookup(NS_DEFAULT), ifindex);
c3bd894e 1511
65dc7dd3
QY		 1512 if (ifp) {
1513 zlog_info("Setting interface %s (%u): protodown %s", ifp->name,
1514 ifindex, down ? "on" : "off");
1515 zebra_if_set_protodown(ifp, down);
1516 } else {
1517 zlog_warn(
1518 "Cannot set protodown %s for interface %u; does not exist",
1519 down ? "on" : "off", ifindex);
1520 }
1521
c3bd894e
QY		 1522
1523stream_failure:
1524 return;
1525}
1526
786a9bd9 1527bool zserv_nexthop_num_warn(const char *caller, const struct prefix *p,
bf094f69
QY		 1528 const unsigned int nexthop_num)
1529{
b3f2b590 1530 if (nexthop_num > zrouter.multipath_num) {
bf094f69 1531 char buff[PREFIX2STR_BUFFER];
8b1766b1 1532
e270f004
SW		 1533 if (p)
1534 prefix2str(p, buff, sizeof(buff));
1535
9df414fe 1536 flog_warn(
e914ccbe 1537 EC_ZEBRA_MORE_NH_THAN_MULTIPATH,
bf094f69 1538 "%s: Prefix %s has %d nexthops, but we can only use the first %d",
e270f004
SW		 1539 caller, (p ? buff : "(NULL)"), nexthop_num,
1540 zrouter.multipath_num);
786a9bd9 1541 return true;
bf094f69 1542 }
786a9bd9
DS		 1543
1544 return false;
bf094f69
QY		 1545}
1546
62e46303
MS		 1547/*
1548 * Create a new nexthop based on a zapi nexthop.
1549 */
2f35a820
DS		 1550static struct nexthop *nexthop_from_zapi(const struct zapi_nexthop *api_nh,
1551 uint32_t flags, struct prefix *p,
1552 uint16_t backup_nexthop_num)
62e46303
MS		 1553{
1554 struct nexthop *nexthop = NULL;
1555 struct ipaddr vtep_ip;
1556 struct interface *ifp;
474aebd9 1557 int i;
62e46303
MS		 1558 char nhbuf[INET6_ADDRSTRLEN] = "";
1559
62e46303
MS		 1560 switch (api_nh->type) {
1561 case NEXTHOP_TYPE_IFINDEX:
1562 nexthop = nexthop_from_ifindex(api_nh->ifindex, api_nh->vrf_id);
1563 break;
1564 case NEXTHOP_TYPE_IPV4:
1565 if (IS_ZEBRA_DEBUG_RECV) {
1566 inet_ntop(AF_INET, &api_nh->gate.ipv4, nhbuf,
1567 sizeof(nhbuf));
1568 zlog_debug("%s: nh=%s, vrf_id=%d", __func__,
1569 nhbuf, api_nh->vrf_id);
1570 }
1571 nexthop = nexthop_from_ipv4(&api_nh->gate.ipv4, NULL,
1572 api_nh->vrf_id);
1573 break;
1574 case NEXTHOP_TYPE_IPV4_IFINDEX:
1575 if (IS_ZEBRA_DEBUG_RECV) {
1576 inet_ntop(AF_INET, &api_nh->gate.ipv4, nhbuf,
1577 sizeof(nhbuf));
1578 zlog_debug("%s: nh=%s, vrf_id=%d, ifindex=%d",
1579 __func__, nhbuf, api_nh->vrf_id,
1580 api_nh->ifindex);
1581 }
1582
1583 nexthop = nexthop_from_ipv4_ifindex(
1584 &api_nh->gate.ipv4, NULL, api_nh->ifindex,
1585 api_nh->vrf_id);
1586
62e46303
MS		 1587 /* Special handling for IPv4 routes sourced from EVPN:
1588 * the nexthop and associated MAC need to be installed.
1589 */
2f35a820 1590 if (CHECK_FLAG(flags, ZEBRA_FLAG_EVPN_ROUTE)) {
62e46303
MS		 1591 memset(&vtep_ip, 0, sizeof(struct ipaddr));
1592 vtep_ip.ipa_type = IPADDR_V4;
1593 memcpy(&(vtep_ip.ipaddr_v4), &(api_nh->gate.ipv4),
1594 sizeof(struct in_addr));
1595 zebra_vxlan_evpn_vrf_route_add(
ff9aca4f 1596 api_nh->vrf_id, &api_nh->rmac, &vtep_ip, p);
62e46303
MS		 1597 }
1598 break;
1599 case NEXTHOP_TYPE_IPV6:
1600 if (IS_ZEBRA_DEBUG_RECV) {
1601 inet_ntop(AF_INET6, &api_nh->gate.ipv6, nhbuf,
1602 sizeof(nhbuf));
1603 zlog_debug("%s: nh=%s, vrf_id=%d", __func__,
1604 nhbuf, api_nh->vrf_id);
1605 }
1606 nexthop = nexthop_from_ipv6(&api_nh->gate.ipv6, api_nh->vrf_id);
1607 break;
1608 case NEXTHOP_TYPE_IPV6_IFINDEX:
1609 if (IS_ZEBRA_DEBUG_RECV) {
1610 inet_ntop(AF_INET6, &api_nh->gate.ipv6, nhbuf,
1611 sizeof(nhbuf));
1612 zlog_debug("%s: nh=%s, vrf_id=%d, ifindex=%d",
1613 __func__, nhbuf, api_nh->vrf_id,
1614 api_nh->ifindex);
1615 }
1616 nexthop = nexthop_from_ipv6_ifindex(&api_nh->gate.ipv6,
1617 api_nh->ifindex,
1618 api_nh->vrf_id);
1619
1620 /* Special handling for IPv6 routes sourced from EVPN:
1621 * the nexthop and associated MAC need to be installed.
1622 */
2f35a820 1623 if (CHECK_FLAG(flags, ZEBRA_FLAG_EVPN_ROUTE)) {
62e46303
MS		 1624 memset(&vtep_ip, 0, sizeof(struct ipaddr));
1625 vtep_ip.ipa_type = IPADDR_V6;
1626 memcpy(&vtep_ip.ipaddr_v6, &(api_nh->gate.ipv6),
1627 sizeof(struct in6_addr));
1628 zebra_vxlan_evpn_vrf_route_add(
ff9aca4f 1629 api_nh->vrf_id, &api_nh->rmac, &vtep_ip, p);
62e46303
MS		 1630 }
1631 break;
1632 case NEXTHOP_TYPE_BLACKHOLE:
1633 if (IS_ZEBRA_DEBUG_RECV)
1634 zlog_debug("%s: nh blackhole %d",
1635 __func__, api_nh->bh_type);
1636
0789eb69
KM		 1637 nexthop =
1638 nexthop_from_blackhole(api_nh->bh_type, api_nh->vrf_id);
62e46303
MS		 1639 break;
1640 }
1641
1642 /* Return early if we couldn't process the zapi nexthop */
1643 if (nexthop == NULL) {
1644 goto done;
1645 }
1646
12b4d77b 1647 /* Mark nexthop as onlink either if client has explicitly told us
1648 * to or if the nexthop is on an 'unnumbered' interface.
1649 */
62e46303
MS		 1650 if (CHECK_FLAG(api_nh->flags, ZAPI_NEXTHOP_FLAG_ONLINK))
1651 SET_FLAG(nexthop->flags, NEXTHOP_FLAG_ONLINK);
12b4d77b 1652 else if (api_nh->type == NEXTHOP_TYPE_IPV4_IFINDEX) {
1653 ifp = if_lookup_by_index(api_nh->ifindex, api_nh->vrf_id);
1654 if (ifp && connected_is_unnumbered(ifp))
1655 SET_FLAG(nexthop->flags, NEXTHOP_FLAG_ONLINK);
1656 }
62e46303
MS		 1657
1658 if (CHECK_FLAG(api_nh->flags, ZAPI_NEXTHOP_FLAG_WEIGHT))
1659 nexthop->weight = api_nh->weight;
1660
1d48702e 1661 if (CHECK_FLAG(api_nh->flags, ZAPI_NEXTHOP_FLAG_HAS_BACKUP)) {
474aebd9
MS		 1662 /* Validate count */
1663 if (api_nh->backup_num > NEXTHOP_MAX_BACKUPS) {
1d48702e 1664 if (IS_ZEBRA_DEBUG_RECV || IS_ZEBRA_DEBUG_EVENT)
474aebd9
MS		 1665 zlog_debug("%s: invalid backup nh count %d",
1666 __func__, api_nh->backup_num);
1667 nexthop_free(nexthop);
1668 nexthop = NULL;
1669 goto done;
1670 }
1671
1672 /* Copy backup info */
1673 SET_FLAG(nexthop->flags, NEXTHOP_FLAG_HAS_BACKUP);
1674 nexthop->backup_num = api_nh->backup_num;
1675
1676 for (i = 0; i < api_nh->backup_num; i++) {
1677 /* Validate backup index */
2f35a820 1678 if (api_nh->backup_idx[i] < backup_nexthop_num) {
474aebd9
MS		 1679 nexthop->backup_idx[i] = api_nh->backup_idx[i];
1680 } else {
1681 if (IS_ZEBRA_DEBUG_RECV || IS_ZEBRA_DEBUG_EVENT)
1682 zlog_debug("%s: invalid backup nh idx %d",
1683 __func__,
1684 api_nh->backup_idx[i]);
1685 nexthop_free(nexthop);
1686 nexthop = NULL;
1687 goto done;
1688 }
1d48702e
MS		 1689 }
1690 }
474aebd9 1691
62e46303
MS		 1692done:
1693 return nexthop;
1694}
1695
2f35a820
DS		 1696static bool zapi_read_nexthops(struct zserv *client, struct prefix *p,
1697 struct zapi_nexthop *nhops, uint32_t flags,
1698 uint32_t message, uint16_t nexthop_num,
1699 uint16_t backup_nh_num,
f70da2a3
DS		 1700 struct nexthop_group **png,
1701 struct nhg_backup_info **pbnhg)
bf094f69 1702{
0eb97b86 1703 struct nexthop_group *ng = NULL;
1d48702e 1704 struct nhg_backup_info *bnhg = NULL;
2f35a820 1705 uint16_t i;
f70da2a3 1706 struct nexthop *last_nh = NULL;
bf094f69 1707
f70da2a3 1708 assert(!(png && pbnhg));
c2c02b76 1709
2f35a820 1710 if (png)
66c28560 1711 ng = nexthop_group_new();
bf094f69 1712
2f35a820 1713 if (pbnhg && backup_nh_num > 0) {
f70da2a3 1714 if (IS_ZEBRA_DEBUG_RECV)
2f35a820
DS		 1715 zlog_debug("%s: adding %d backup nexthops", __func__,
1716 backup_nh_num);
7fcb24bb 1717
66c28560 1718 bnhg = zebra_nhg_backup_alloc();
62e46303
MS		 1719 }
1720
bf094f69
QY		 1721 /*
1722 * TBD should _all_ of the nexthop add operations use
1723 * api_nh->vrf_id instead of re->vrf_id ? I only changed
1724 * for cases NEXTHOP_TYPE_IPV4 and NEXTHOP_TYPE_IPV6.
1725 */
f70da2a3
DS		 1726 for (i = 0; i < nexthop_num; i++) {
1727 struct nexthop *nexthop;
1728 enum lsp_types_t label_type;
1729 char nhbuf[NEXTHOP_STRLEN];
1730 char labelbuf[MPLS_LABEL_STRLEN];
1731 struct zapi_nexthop *api_nh = &nhops[i];
7fcb24bb 1732
62e46303 1733 /* Convert zapi nexthop */
2f35a820 1734 nexthop = nexthop_from_zapi(api_nh, flags, p, backup_nh_num);
62e46303
MS		 1735 if (!nexthop) {
1736 flog_warn(
1737 EC_ZEBRA_NEXTHOP_CREATION_FAILED,
f70da2a3
DS		 1738 "%s: Nexthops Specified: %u(%u) but we failed to properly create one",
1739 __func__, nexthop_num, i);
1740 if (ng)
1741 nexthop_group_delete(&ng);
1742 if (bnhg)
1743 zebra_nhg_backup_free(&bnhg);
1744 return false;
62e46303 1745 }
7fcb24bb 1746
ff9aca4f
SW		 1747 if (bnhg
1748 && CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_HAS_BACKUP)) {
f70da2a3
DS		 1749 if (IS_ZEBRA_DEBUG_RECV) {
1750 nexthop2str(nexthop, nhbuf, sizeof(nhbuf));
1751 zlog_debug("%s: backup nh %s with BACKUP flag!",
1752 __func__, nhbuf);
1753 }
1754 UNSET_FLAG(nexthop->flags, NEXTHOP_FLAG_HAS_BACKUP);
1755 nexthop->backup_num = 0;
1756 }
1757
2f35a820 1758 if (CHECK_FLAG(message, ZAPI_MESSAGE_SRTE)) {
31f937fb
SM		 1759 SET_FLAG(nexthop->flags, NEXTHOP_FLAG_SRTE);
1760 nexthop->srte_color = api_nh->srte_color;
1761 }
1762
62e46303
MS		 1763 /* MPLS labels for BGP-LU or Segment Routing */
1764 if (CHECK_FLAG(api_nh->flags, ZAPI_NEXTHOP_FLAG_LABEL)
1765 && api_nh->type != NEXTHOP_TYPE_IFINDEX
1766 && api_nh->type != NEXTHOP_TYPE_BLACKHOLE
1767 && api_nh->label_num > 0) {
7fcb24bb 1768
62e46303 1769 label_type = lsp_type_from_re_type(client->proto);
62e46303
MS		 1770 nexthop_add_labels(nexthop, label_type,
1771 api_nh->label_num,
1772 &api_nh->labels[0]);
bf094f69 1773 }
bf094f69 1774
c60c1ade 1775 if (CHECK_FLAG(api_nh->flags, ZAPI_NEXTHOP_FLAG_SEG6LOCAL)
8689b25a
HS		 1776 && api_nh->type != NEXTHOP_TYPE_BLACKHOLE) {
1777 if (IS_ZEBRA_DEBUG_RECV)
1778 zlog_debug("%s: adding seg6local action %s",
1779 __func__,
1780 seg6local_action2str(
1781 api_nh->seg6local_action));
1782
eab0f8f0
HS		 1783 nexthop_add_srv6_seg6local(nexthop,
1784 api_nh->seg6local_action,
1785 &api_nh->seg6local_ctx);
8689b25a
HS		 1786 }
1787
c60c1ade 1788 if (CHECK_FLAG(api_nh->flags, ZAPI_NEXTHOP_FLAG_SEG6)
76fb7ae4
HS		 1789 && api_nh->type != NEXTHOP_TYPE_BLACKHOLE) {
1790 if (IS_ZEBRA_DEBUG_RECV)
1791 zlog_debug("%s: adding seg6", __func__);
1792
eab0f8f0 1793 nexthop_add_srv6_seg6(nexthop, &api_nh->seg6_segs);
76fb7ae4
HS		 1794 }
1795
1d48702e
MS		 1796 if (IS_ZEBRA_DEBUG_RECV) {
1797 labelbuf[0] = '\0';
1798 nhbuf[0] = '\0';
1799
1800 nexthop2str(nexthop, nhbuf, sizeof(nhbuf));
1801
1802 if (nexthop->nh_label &&
1803 nexthop->nh_label->num_labels > 0) {
1804 mpls_label2str(nexthop->nh_label->num_labels,
1805 nexthop->nh_label->label,
1806 labelbuf, sizeof(labelbuf),
1807 false);
1808 }
1809
1810 zlog_debug("%s: nh=%s, vrf_id=%d %s",
1811 __func__, nhbuf, api_nh->vrf_id, labelbuf);
1812 }
1813
66c28560 1814 if (ng) {
f70da2a3 1815 /* Add new nexthop to temporary list. This list is
ff9aca4f
SW		 1816 * canonicalized - sorted - so that it can be hashed
1817 * later in route processing. We expect that the sender
1818 * has sent the list sorted, and the zapi client api
1819 * attempts to enforce that, so this should be
1820 * inexpensive - but it is necessary to support shared
1821 * nexthop-groups.
f70da2a3
DS		 1822 */
1823 nexthop_group_add_sorted(ng, nexthop);
1824 }
1825 if (bnhg) {
ff9aca4f
SW		 1826 /* Note that the order of the backup nexthops is
1827 * significant, so we don't sort this list as we do the
1828 * primary nexthops, we just append.
f70da2a3
DS		 1829 */
1830 if (last_nh)
1831 NEXTHOP_APPEND(last_nh, nexthop);
1832 else
1833 bnhg->nhe->nhg.nexthop = nexthop;
1834
1835 last_nh = nexthop;
1836 }
62e46303
MS		 1837 }
1838
66c28560
SW		 1839
1840 /* succesfully read, set caller pointers now */
1841 if (png)
1842 *png = ng;
1843
1844 if (pbnhg)
1845 *pbnhg = bnhg;
1846
f70da2a3
DS		 1847 return true;
1848}
62e46303 1849
5898ce6f 1850static int zapi_nhg_decode(struct stream *s, int cmd, struct zapi_nhg *api_nhg)
21735352
SW		 1851{
1852 uint16_t i;
1853 struct zapi_nexthop *znh;
1854
1855 STREAM_GETW(s, api_nhg->proto);
1856 STREAM_GETL(s, api_nhg->id);
1857
1858 if (cmd == ZEBRA_NHG_DEL)
1859 goto done;
1860
1861 /* Nexthops */
1862 STREAM_GETW(s, api_nhg->nexthop_num);
1863
1864 if (zserv_nexthop_num_warn(__func__, NULL, api_nhg->nexthop_num))
1865 return -1;
1866
1867 if (api_nhg->nexthop_num <= 0) {
1868 flog_warn(EC_ZEBRA_NEXTHOP_CREATION_FAILED,
1869 "%s: No nexthops sent", __func__);
1870 return -1;
1871 }
1872
1873 for (i = 0; i < api_nhg->nexthop_num; i++) {
1874 znh = &((api_nhg->nexthops)[i]);
1875
1876 if (zapi_nexthop_decode(s, znh, 0, 0) != 0) {
1877 flog_warn(EC_ZEBRA_NEXTHOP_CREATION_FAILED,
1878 "%s: Nexthop creation failed", __func__);
1879 return -1;
1880 }
1881 }
1882
1883 /* Backup Nexthops */
1884 STREAM_GETW(s, api_nhg->backup_nexthop_num);
1885
1886 if (zserv_nexthop_num_warn(__func__, NULL, api_nhg->backup_nexthop_num))
1887 return -1;
1888
1889 for (i = 0; i < api_nhg->backup_nexthop_num; i++) {
1890 znh = &((api_nhg->backup_nexthops)[i]);
1891
1892 if (zapi_nexthop_decode(s, znh, 0, 0) != 0) {
1893 flog_warn(EC_ZEBRA_NEXTHOP_CREATION_FAILED,
1894 "%s: Backup Nexthop creation failed",
1895 __func__);
1896 return -1;
1897 }
1898 }
1899
1900done:
1901 return 0;
1902
1903stream_failure:
1904 flog_warn(
1905 EC_ZEBRA_NEXTHOP_CREATION_FAILED,
1906 "%s: Nexthop Group decode failed with some sort of stream read failure",
1907 __func__);
1908 return -1;
1909}
1910
2f35a820
DS		 1911static void zread_nhg_del(ZAPI_HANDLER_ARGS)
1912{
21735352
SW		 1913 struct stream *s;
1914 struct zapi_nhg api_nhg = {};
0885b1e3 1915 struct nhg_hash_entry *nhe;
2f35a820 1916
21735352
SW		 1917 s = msg;
1918 if (zapi_nhg_decode(s, hdr->command, &api_nhg) < 0) {
1919 if (IS_ZEBRA_DEBUG_RECV)
1920 zlog_debug("%s: Unable to decode zapi_nhg sent",
1921 __func__);
1922 return;
1923 }
2f35a820
DS		 1924
1925 /*
1926 * Delete the received nhg id
2f35a820 1927 */
21735352 1928 nhe = zebra_nhg_proto_del(api_nhg.id, api_nhg.proto);
0885b1e3
SW		 1929
1930 if (nhe) {
6fae63d2 1931 zebra_nhg_decrement_ref(nhe);
ee94437e
MS		 1932 zsend_nhg_notify(api_nhg.proto, client->instance,
1933 client->session_id, api_nhg.id,
1934 ZAPI_NHG_REMOVED);
0885b1e3 1935 } else
ee94437e
MS		 1936 zsend_nhg_notify(api_nhg.proto, client->instance,
1937 client->session_id, api_nhg.id,
1938 ZAPI_NHG_REMOVE_FAIL);
2f35a820
DS		 1939}
1940
8b2d3a0f 1941static void zread_nhg_add(ZAPI_HANDLER_ARGS)
2f35a820
DS		 1942{
1943 struct stream *s;
21735352 1944 struct zapi_nhg api_nhg = {};
2f35a820 1945 struct nexthop_group *nhg = NULL;
21735352 1946 struct nhg_backup_info *bnhg = NULL;
0885b1e3 1947 struct nhg_hash_entry *nhe;
2f35a820 1948
2f35a820 1949 s = msg;
21735352
SW		 1950 if (zapi_nhg_decode(s, hdr->command, &api_nhg) < 0) {
1951 if (IS_ZEBRA_DEBUG_RECV)
1952 zlog_debug("%s: Unable to decode zapi_nhg sent",
1953 __func__);
68671c74
SW		 1954 return;
1955 }
1956
21735352
SW		 1957 if ((!zapi_read_nexthops(client, NULL, api_nhg.nexthops, 0, 0,
1958 api_nhg.nexthop_num,
1959 api_nhg.backup_nexthop_num, &nhg, NULL))
1960 || (!zapi_read_nexthops(client, NULL, api_nhg.backup_nexthops, 0, 0,
1961 api_nhg.backup_nexthop_num,
1962 api_nhg.backup_nexthop_num, NULL, &bnhg))) {
2f35a820 1963
2f35a820 1964 flog_warn(EC_ZEBRA_NEXTHOP_CREATION_FAILED,
ff9aca4f 1965 "%s: Nexthop Group Creation failed", __func__);
fd99142a
MS		 1966
1967 /* Free any local allocations */
1968 nexthop_group_delete(&nhg);
1969 zebra_nhg_backup_free(&bnhg);
1970
2f35a820
DS		 1971 return;
1972 }
0885b1e3 1973
04bec7b2
MS		 1974 /* Create a temporary nhe */
1975 nhe = zebra_nhg_alloc();
1976 nhe->id = api_nhg.id;
1977 nhe->type = api_nhg.proto;
1978 nhe->zapi_instance = client->instance;
1979 nhe->zapi_session = client->session_id;
0885b1e3 1980
04bec7b2
MS		 1981 /* Take over the list(s) of nexthops */
1982 nhe->nhg.nexthop = nhg->nexthop;
1983 nhg->nexthop = NULL;
1984
1985 if (bnhg) {
1986 nhe->backup_info = bnhg;
1987 bnhg = NULL;
1988 }
0885b1e3
SW		 1989
1990 /*
1991 * TODO:
1992 * Assume fully resolved for now and install.
0885b1e3
SW		 1993 * Resolution is going to need some more work.
1994 */
ee94437e 1995
04bec7b2
MS		 1996 /* Enqueue to workqueue for processing */
1997 rib_queue_nhe_add(nhe);
1998
1999 /* Free any local allocations */
2000 nexthop_group_delete(&nhg);
2001 zebra_nhg_backup_free(&bnhg);
2002
2f35a820
DS		 2003}
2004
f70da2a3
DS		 2005static void zread_route_add(ZAPI_HANDLER_ARGS)
2006{
2007 struct stream *s;
2008 struct zapi_route api;
2009 afi_t afi;
2010 struct prefix_ipv6 *src_p = NULL;
2011 struct route_entry *re;
2012 struct nexthop_group *ng = NULL;
2013 struct nhg_backup_info *bnhg = NULL;
2014 int ret;
2015 vrf_id_t vrf_id;
2016 struct nhg_hash_entry nhe;
0eb97b86 2017
f70da2a3
DS		 2018 s = msg;
2019 if (zapi_route_decode(s, &api) < 0) {
2020 if (IS_ZEBRA_DEBUG_RECV)
2021 zlog_debug("%s: Unable to decode zapi_route sent",
2022 __func__);
2023 return;
2024 }
1d48702e 2025
f70da2a3 2026 vrf_id = zvrf_id(zvrf);
31f937fb 2027
2dbe669b
DA		 2028 if (IS_ZEBRA_DEBUG_RECV)
2029 zlog_debug("%s: p=(%u:%u)%pFX, msg flags=0x%x, flags=0x%x",
2030 __func__, vrf_id, api.tableid, &api.prefix,
f70da2a3 2031 (int)api.message, api.flags);
0eb97b86 2032
f70da2a3
DS		 2033 /* Allocate new route. */
2034 re = XCALLOC(MTYPE_RE, sizeof(struct route_entry));
2035 re->type = api.type;
2036 re->instance = api.instance;
2037 re->flags = api.flags;
2038 re->uptime = monotime(NULL);
2039 re->vrf_id = vrf_id;
1d48702e 2040
f70da2a3
DS		 2041 if (api.tableid)
2042 re->table = api.tableid;
2043 else
2044 re->table = zvrf->table_id;
1d48702e 2045
27141ea9
DS		 2046 if (!CHECK_FLAG(api.message, ZAPI_MESSAGE_NHG)
2047 && (!CHECK_FLAG(api.message, ZAPI_MESSAGE_NEXTHOP)
2048 || api.nexthop_num == 0)) {
ff9aca4f
SW		 2049 flog_warn(
2050 EC_ZEBRA_RX_ROUTE_NO_NEXTHOPS,
2051 "%s: received a route without nexthops for prefix %pFX from client %s",
2052 __func__, &api.prefix,
2053 zebra_route_string(client->proto));
1d48702e 2054
f70da2a3
DS		 2055 XFREE(MTYPE_RE, re);
2056 return;
2057 }
1d48702e 2058
f70da2a3 2059 /* Report misuse of the backup flag */
ff9aca4f
SW		 2060 if (CHECK_FLAG(api.message, ZAPI_MESSAGE_BACKUP_NEXTHOPS)
2061 && api.backup_nexthop_num == 0) {
f70da2a3 2062 if (IS_ZEBRA_DEBUG_RECV || IS_ZEBRA_DEBUG_EVENT)
ff9aca4f
SW		 2063 zlog_debug(
2064 "%s: client %s: BACKUP flag set but no backup nexthops, prefix %pFX",
2065 __func__, zebra_route_string(client->proto),
2066 &api.prefix);
f70da2a3 2067 }
62e46303 2068
50db3f2f
SW		 2069 if (CHECK_FLAG(api.message, ZAPI_MESSAGE_NHG))
2070 re->nhe_id = api.nhgid;
2071
2072 if (!re->nhe_id
2b5ecd4c
SW		 2073 && (!zapi_read_nexthops(client, &api.prefix, api.nexthops,
2074 api.flags, api.message, api.nexthop_num,
2075 api.backup_nexthop_num, &ng, NULL)
2076 || !zapi_read_nexthops(client, &api.prefix, api.backup_nexthops,
2077 api.flags, api.message,
2078 api.backup_nexthop_num,
2079 api.backup_nexthop_num, NULL, &bnhg))) {
21735352
SW		 2080
2081 nexthop_group_delete(&ng);
2082 zebra_nhg_backup_free(&bnhg);
f70da2a3
DS		 2083 XFREE(MTYPE_RE, re);
2084 return;
7fcb24bb
RW		 2085 }
2086
bf094f69
QY		 2087 if (CHECK_FLAG(api.message, ZAPI_MESSAGE_DISTANCE))
2088 re->distance = api.distance;
2089 if (CHECK_FLAG(api.message, ZAPI_MESSAGE_METRIC))
2090 re->metric = api.metric;
2091 if (CHECK_FLAG(api.message, ZAPI_MESSAGE_TAG))
2092 re->tag = api.tag;
2093 if (CHECK_FLAG(api.message, ZAPI_MESSAGE_MTU))
2094 re->mtu = api.mtu;
2095
a29a6001
DS		 2096 if (CHECK_FLAG(api.message, ZAPI_MESSAGE_OPAQUE)) {
2097 re->opaque = XMALLOC(MTYPE_OPAQUE,
2098 sizeof(struct opaque) + api.opaque.length);
2099 re->opaque->length = api.opaque.length;
2100 memcpy(re->opaque->data, api.opaque.data, re->opaque->length);
2101 }
2102
bf094f69
QY		 2103 afi = family2afi(api.prefix.family);
2104 if (afi != AFI_IP6 && CHECK_FLAG(api.message, ZAPI_MESSAGE_SRCPFX)) {
e914ccbe 2105 flog_warn(EC_ZEBRA_RX_SRCDEST_WRONG_AFI,
9df414fe 2106 "%s: Received SRC Prefix but afi is not v6",
15569c58 2107 __func__);
0eb97b86 2108 nexthop_group_delete(&ng);
1d48702e 2109 zebra_nhg_backup_free(&bnhg);
bf094f69
QY		 2110 XFREE(MTYPE_RE, re);
2111 return;
2112 }
2113 if (CHECK_FLAG(api.message, ZAPI_MESSAGE_SRCPFX))
2114 src_p = &api.src_prefix;
2115
5e7939a5
DS		 2116 if (api.safi != SAFI_UNICAST && api.safi != SAFI_MULTICAST) {
2117 flog_warn(EC_LIB_ZAPI_MISSMATCH,
2118 "%s: Received safi: %d but we can only accept UNICAST or MULTICAST",
2119 __func__, api.safi);
2120 nexthop_group_delete(&ng);
1d48702e 2121 zebra_nhg_backup_free(&bnhg);
5e7939a5
DS		 2122 XFREE(MTYPE_RE, re);
2123 return;
2124 }
1d48702e 2125
50db3f2f
SW		 2126 /*
2127 * If we have an ID, this proto owns the NHG it sent along with the
2128 * route, so we just send the ID into rib code with it.
2129 *
2130 * Havent figured out how to handle backup NHs with this yet, so lets
2131 * keep that separate.
2132 * Include backup info with the route. We use a temporary nhe here;
377e29f7
MS		 2133 * if this is a new/unknown nhe, a new copy will be allocated
2134 * and stored.
2135 */
50db3f2f
SW		 2136 if (!re->nhe_id) {
2137 zebra_nhe_init(&nhe, afi, ng->nexthop);
2138 nhe.nhg.nexthop = ng->nexthop;
2139 nhe.backup_info = bnhg;
2140 }
1d48702e
MS		 2141 ret = rib_add_multipath_nhe(afi, api.safi, &api.prefix, src_p,
2142 re, &nhe);
bf094f69 2143
f94a7703
DS		 2144 /*
2145 * rib_add_multipath_nhe only fails in a couple spots
2146 * and in those spots we have not freed memory
2147 */
38c764dd
DS		 2148 if (ret == -1) {
2149 client->error_cnt++;
f94a7703 2150 XFREE(MTYPE_RE, re);
38c764dd 2151 }
f94a7703 2152
377e29f7
MS		 2153 /* At this point, these allocations are not needed: 're' has been
2154 * retained or freed, and if 're' still exists, it is using
2155 * a reference to a shared group object.
2156 */
2157 nexthop_group_delete(&ng);
2158 if (bnhg)
2159 zebra_nhg_backup_free(&bnhg);
2160
bf094f69
QY		 2161 /* Stats */
2162 switch (api.prefix.family) {
2163 case AF_INET:
38c764dd 2164 if (ret == 0)
bf094f69 2165 client->v4_route_add_cnt++;
38c764dd 2166 else if (ret == 1)
bf094f69
QY		 2167 client->v4_route_upd8_cnt++;
2168 break;
2169 case AF_INET6:
38c764dd 2170 if (ret == 0)
bf094f69 2171 client->v6_route_add_cnt++;
38c764dd 2172 else if (ret == 1)
bf094f69
QY		 2173 client->v6_route_upd8_cnt++;
2174 break;
2175 }
2176}
2177
224ccf29
DL		 2178void zapi_opaque_free(struct opaque *opaque)
2179{
2180 XFREE(MTYPE_OPAQUE, opaque);
2181}
2182
bf094f69
QY		 2183static void zread_route_del(ZAPI_HANDLER_ARGS)
2184{
2185 struct stream *s;
2186 struct zapi_route api;
2187 afi_t afi;
2188 struct prefix_ipv6 *src_p = NULL;
2189 uint32_t table_id;
2190
2191 s = msg;
2192 if (zapi_route_decode(s, &api) < 0)
2193 return;
2194
2195 afi = family2afi(api.prefix.family);
2196 if (afi != AFI_IP6 && CHECK_FLAG(api.message, ZAPI_MESSAGE_SRCPFX)) {
e914ccbe 2197 flog_warn(EC_ZEBRA_RX_SRCDEST_WRONG_AFI,
9df414fe 2198 "%s: Received a src prefix while afi is not v6",
15569c58 2199 __func__);
bf094f69
QY		 2200 return;
2201 }
2202 if (CHECK_FLAG(api.message, ZAPI_MESSAGE_SRCPFX))
2203 src_p = &api.src_prefix;
2204
60ca3cc2 2205 if (api.tableid)
bf094f69
QY		 2206 table_id = api.tableid;
2207 else
2208 table_id = zvrf->table_id;
2209
2dbe669b
DA		 2210 if (IS_ZEBRA_DEBUG_RECV)
2211 zlog_debug("%s: p=(%u:%u)%pFX, msg flags=0x%x, flags=0x%x",
2212 __func__, zvrf_id(zvrf), table_id, &api.prefix,
c2c02b76 2213 (int)api.message, api.flags);
c2c02b76 2214
bf094f69 2215 rib_delete(afi, api.safi, zvrf_id(zvrf), api.type, api.instance,
bc541126 2216 api.flags, &api.prefix, src_p, NULL, 0, table_id, api.metric,
3ceae22b 2217 api.distance, false);
bf094f69
QY		 2218
2219 /* Stats */
2220 switch (api.prefix.family) {
2221 case AF_INET:
2222 client->v4_route_del_cnt++;
2223 break;
2224 case AF_INET6:
2225 client->v6_route_del_cnt++;
2226 break;
2227 }
2228}
2229
bf094f69
QY		 2230/* MRIB Nexthop lookup for IPv4. */
2231static void zread_ipv4_nexthop_lookup_mrib(ZAPI_HANDLER_ARGS)
2232{
2233 struct in_addr addr;
2234 struct route_entry *re;
2235
2236 STREAM_GET(&addr.s_addr, msg, IPV4_MAX_BYTELEN);
2237 re = rib_match_ipv4_multicast(zvrf_id(zvrf), addr, NULL);
2238 zsend_ipv4_nexthop_lookup_mrib(client, addr, re, zvrf);
2239
2240stream_failure:
2241 return;
2242}
2243
bf094f69
QY		 2244/* Register zebra server router-id information. Send current router-id */
2245static void zread_router_id_add(ZAPI_HANDLER_ARGS)
2246{
98a3fb0a 2247 afi_t afi;
bf094f69 2248 struct prefix p;
01141358 2249 struct prefix zero;
bf094f69 2250
98a3fb0a
SM		 2251 STREAM_GETW(msg, afi);
2252
2253 if (afi <= AFI_UNSPEC || afi >= AFI_MAX) {
2254 zlog_warn(
2255 "Invalid AFI %u while registering for router ID notifications",
2256 afi);
2257 goto stream_failure;
2258 }
2259
bf094f69 2260 /* Router-id information is needed. */
98a3fb0a 2261 vrf_bitmap_set(client->ridinfo[afi], zvrf_id(zvrf));
bf094f69 2262
98a3fb0a 2263 router_id_get(afi, &p, zvrf);
bf094f69 2264
01141358
DS		 2265 /*
2266 * If we have not officially setup a router-id let's not
2267 * tell the upper level protocol about it yet.
2268 */
2269 memset(&zero, 0, sizeof(zero));
2270 if ((p.family == AF_INET && p.u.prefix4.s_addr == INADDR_ANY)
2271 || (p.family == AF_INET6
2272 && memcmp(&p.u.prefix6, &zero.u.prefix6,
2273 sizeof(struct in6_addr))
2274 == 0))
2275 return;
2276
98a3fb0a
SM		 2277 zsend_router_id_update(client, afi, &p, zvrf_id(zvrf));
2278
2279stream_failure:
2280 return;
bf094f69
QY		 2281}
2282
2283/* Unregister zebra server router-id information. */
2284static void zread_router_id_delete(ZAPI_HANDLER_ARGS)
2285{
98a3fb0a
SM		 2286 afi_t afi;
2287
2288 STREAM_GETW(msg, afi);
2289
2290 if (afi <= AFI_UNSPEC || afi >= AFI_MAX) {
2291 zlog_warn(
2292 "Invalid AFI %u while unregistering from router ID notifications",
2293 afi);
2294 goto stream_failure;
2295 }
2296
2297 vrf_bitmap_unset(client->ridinfo[afi], zvrf_id(zvrf));
2298
2299stream_failure:
2300 return;
bf094f69
QY		 2301}
2302
2303static void zsend_capabilities(struct zserv *client, struct zebra_vrf *zvrf)
2304{
2305 struct stream *s = stream_new(ZEBRA_MAX_PACKET_SIZ);
2306
2307 zclient_create_header(s, ZEBRA_CAPABILITIES, zvrf->vrf->vrf_id);
bb6b7f79 2308 stream_putl(s, vrf_get_backend());
bf094f69 2309 stream_putc(s, mpls_enabled);
b3f2b590 2310 stream_putl(s, zrouter.multipath_num);
02c0866d 2311 stream_putc(s, zebra_mlag_get_role());
bf094f69
QY		 2312
2313 stream_putw_at(s, 0, stream_get_endp(s));
21ccc0cf 2314 zserv_send_message(client, s);
bf094f69
QY		 2315}
2316
b120fe3b
DS		 2317void zsend_capabilities_all_clients(void)
2318{
2319 struct listnode *node, *nnode;
2320 struct zebra_vrf *zvrf;
2321 struct zserv *client;
2322
2323 zvrf = vrf_info_lookup(VRF_DEFAULT);
2324 for (ALL_LIST_ELEMENTS(zrouter.client_list, node, nnode, client)) {
17da84a4
KS		 2325 /* Do not send unsolicited messages to synchronous clients. */
2326 if (client->synchronous)
2327 continue;
2328
b120fe3b
DS		 2329 zsend_capabilities(client, zvrf);
2330 }
2331}
2332
bf094f69
QY		 2333/* Tie up route-type and client->sock */
2334static void zread_hello(ZAPI_HANDLER_ARGS)
2335{
2336 /* type of protocol (lib/zebra.h) */
2337 uint8_t proto;
2338 unsigned short instance;
2339 uint8_t notify;
17da84a4 2340 uint8_t synchronous;
4e0b5b31 2341 uint32_t session_id;
bf094f69
QY		 2342
2343 STREAM_GETC(msg, proto);
2344 STREAM_GETW(msg, instance);
4e0b5b31 2345 STREAM_GETL(msg, session_id);
bf094f69 2346 STREAM_GETC(msg, notify);
17da84a4 2347 STREAM_GETC(msg, synchronous);
bf094f69
QY		 2348 if (notify)
2349 client->notify_owner = true;
2350
17da84a4
KS		 2351 if (synchronous)
2352 client->synchronous = true;
2353
bf094f69 2354 /* accept only dynamic routing protocols */
f23cbcda 2355 if ((proto < ZEBRA_ROUTE_MAX) && (proto > ZEBRA_ROUTE_CONNECT)) {
bf094f69
QY		 2356 zlog_notice(
2357 "client %d says hello and bids fair to announce only %s routes vrf=%u",
2358 client->sock, zebra_route_string(proto),
2359 zvrf->vrf->vrf_id);
2360 if (instance)
2361 zlog_notice("client protocol instance %d", instance);
2362
2363 client->proto = proto;
2364 client->instance = instance;
4e0b5b31 2365 client->session_id = session_id;
6f4aee61
S		 2366
2367 /* Graceful restart processing for client connect */
2368 zebra_gr_client_reconnect(client);
bf094f69
QY		 2369 }
2370
17da84a4
KS		 2371 if (!client->synchronous) {
2372 zsend_capabilities(client, zvrf);
2373 zebra_vrf_update_all(client);
2374 }
bf094f69
QY		 2375stream_failure:
2376 return;
2377}
2378
2379/* Unregister all information in a VRF. */
2380static void zread_vrf_unregister(ZAPI_HANDLER_ARGS)
2381{
2382 int i;
2383 afi_t afi;
2384
49db7a7b 2385 for (afi = AFI_IP; afi < AFI_MAX; afi++) {
bf094f69
QY		 2386 for (i = 0; i < ZEBRA_ROUTE_MAX; i++)
2387 vrf_bitmap_unset(client->redist[afi][i], zvrf_id(zvrf));
49db7a7b 2388 vrf_bitmap_unset(client->redist_default[afi], zvrf_id(zvrf));
98a3fb0a 2389 vrf_bitmap_unset(client->ridinfo[afi], zvrf_id(zvrf));
7723e8d3 2390 vrf_bitmap_unset(client->nhrp_neighinfo[afi], zvrf_id(zvrf));
49db7a7b 2391 }
bf094f69
QY		 2392}
2393
ff8d3c2d
MS		 2394/*
2395 * Validate incoming zapi mpls lsp / labels message
2396 */
2397static int zapi_labels_validate(const struct zapi_labels *zl)
2398{
2399 int ret = -1;
2400 int i, j, idx;
2401 uint32_t bits[8];
2402 uint32_t ival;
2403 const struct zapi_nexthop *znh;
2404
2405 /* Validate backup info: no duplicates for a single primary */
2406 if (zl->backup_nexthop_num == 0) {
2407 ret = 0;
2408 goto done;
2409 }
2410
2411 for (j = 0; j < zl->nexthop_num; j++) {
2412 znh = &zl->nexthops[j];
2413
2414 memset(bits, 0, sizeof(bits));
2415
2416 for (i = 0; i < znh->backup_num; i++) {
2417 idx = znh->backup_idx[i] / 32;
2418
2419 ival = 1 << znh->backup_idx[i] % 32;
2420
2421 /* Check whether value is already used */
2422 if (ival & bits[idx]) {
2423 /* Fail */
2424
2425 if (IS_ZEBRA_DEBUG_RECV)
2426 zlog_debug("%s: invalid zapi mpls message: duplicate backup nexthop index %d",
2427 __func__,
2428 znh->backup_idx[i]);
2429 goto done;
2430 }
2431
2432 /* Mark index value */
2433 bits[idx] |= ival;
2434 }
2435 }
2436
2437 ret = 0;
2438
2439done:
2440
2441 return ret;
2442}
2443
ea6b290b
RW		 2444/*
2445 * Handle request to create an MPLS LSP.
2446 *
2447 * A single message can fully specify an LSP with multiple nexthops.
2448 *
2449 * When the optional ZAPI_LABELS_FTN flag is set, the specified FEC (route) is
2450 * updated to use the received label(s).
2451 */
2452static void zread_mpls_labels_add(ZAPI_HANDLER_ARGS)
bf094f69
QY		 2453{
2454 struct stream *s;
bad6b0e7 2455 struct zapi_labels zl;
f2e7f4eb 2456 int ret;
bf094f69
QY		 2457
2458 /* Get input stream. */
2459 s = msg;
bad6b0e7
RW		 2460 if (zapi_labels_decode(s, &zl) < 0) {
2461 if (IS_ZEBRA_DEBUG_RECV)
2462 zlog_debug("%s: Unable to decode zapi_labels sent",
15569c58 2463 __func__);
bf094f69
QY		 2464 return;
2465 }
bf094f69 2466
bf094f69
QY		 2467 if (!mpls_enabled)
2468 return;
2469
ff8d3c2d
MS		 2470 /* Validate; will debug on failure */
2471 if (zapi_labels_validate(&zl) < 0)
2472 return;
2473
f2e7f4eb
MS		 2474 ret = mpls_zapi_labels_process(true, zvrf, &zl);
2475 if (ret < 0) {
2476 if (IS_ZEBRA_DEBUG_RECV)
2477 zlog_debug("%s: Error processing zapi request",
2478 __func__);
ea6b290b
RW		 2479 }
2480}
2481
2482/*
2483 * Handle request to delete an MPLS LSP.
2484 *
2485 * An LSP is identified by its type and local label. When the received message
2486 * doesn't contain any nexthop, the whole LSP is deleted. Otherwise, only the
2487 * listed LSP nexthops (aka NHLFEs) are deleted.
2488 *
2489 * When the optional ZAPI_LABELS_FTN flag is set, the labels of the specified
2490 * FEC (route) nexthops are deleted.
2491 */
2492static void zread_mpls_labels_delete(ZAPI_HANDLER_ARGS)
2493{
2494 struct stream *s;
2495 struct zapi_labels zl;
f2e7f4eb 2496 int ret;
ea6b290b
RW		 2497
2498 /* Get input stream. */
2499 s = msg;
2500 if (zapi_labels_decode(s, &zl) < 0) {
2501 if (IS_ZEBRA_DEBUG_RECV)
2502 zlog_debug("%s: Unable to decode zapi_labels sent",
15569c58 2503 __func__);
ea6b290b
RW		 2504 return;
2505 }
2506
2507 if (!mpls_enabled)
2508 return;
2509
2510 if (zl.nexthop_num > 0) {
f2e7f4eb
MS		 2511 ret = mpls_zapi_labels_process(false /*delete*/, zvrf, &zl);
2512 if (ret < 0) {
2513 if (IS_ZEBRA_DEBUG_RECV)
2514 zlog_debug("%s: Error processing zapi request",
2515 __func__);
ea6b290b
RW		 2516 }
2517 } else {
2518 mpls_lsp_uninstall_all_vrf(zvrf, zl.type, zl.local_label);
2519
b3c49d0e 2520 if (CHECK_FLAG(zl.message, ZAPI_LABELS_FTN))
ea6b290b
RW		 2521 mpls_ftn_uninstall(zvrf, zl.type, &zl.route.prefix,
2522 zl.route.type, zl.route.instance);
2523 }
2524}
2525
2526/*
2527 * Handle request to add an MPLS LSP or change an existing one.
2528 *
2529 * A single message can fully specify an LSP with multiple nexthops.
2530 *
2531 * When the optional ZAPI_LABELS_FTN flag is set, the specified FEC (route) is
2532 * updated to use the received label(s).
2533 *
2534 * NOTE: zebra will use route replace semantics (make-before-break) to update
2535 * the LSP in the forwarding plane if that's supported by the underlying
2536 * platform.
2537 */
2538static void zread_mpls_labels_replace(ZAPI_HANDLER_ARGS)
2539{
2540 struct stream *s;
2541 struct zapi_labels zl;
2542
2543 /* Get input stream. */
2544 s = msg;
2545 if (zapi_labels_decode(s, &zl) < 0) {
2546 if (IS_ZEBRA_DEBUG_RECV)
2547 zlog_debug("%s: Unable to decode zapi_labels sent",
15569c58 2548 __func__);
ea6b290b
RW		 2549 return;
2550 }
2551
2552 if (!mpls_enabled)
2553 return;
2554
ff8d3c2d
MS		 2555 /* Validate; will debug on failure */
2556 if (zapi_labels_validate(&zl) < 0)
2557 return;
2558
f2e7f4eb
MS		 2559 /* This removes everything, then re-adds from the client's
2560 * zapi message. Since the LSP will be processed later, on this
2561 * this same pthread, all of the changes will 'appear' at once.
2562 */
ea6b290b
RW		 2563 mpls_lsp_uninstall_all_vrf(zvrf, zl.type, zl.local_label);
2564 if (CHECK_FLAG(zl.message, ZAPI_LABELS_FTN))
2565 mpls_ftn_uninstall(zvrf, zl.type, &zl.route.prefix,
2566 zl.route.type, zl.route.instance);
2567
f2e7f4eb 2568 mpls_zapi_labels_process(true, zvrf, &zl);
bf094f69
QY		 2569}
2570
31f937fb
SM		 2571static void zread_sr_policy_set(ZAPI_HANDLER_ARGS)
2572{
2573 struct stream *s;
2574 struct zapi_sr_policy zp;
2575 struct zapi_srte_tunnel *zt;
2576 struct zebra_sr_policy *policy;
2577
2578 /* Get input stream. */
2579 s = msg;
2580 if (zapi_sr_policy_decode(s, &zp) < 0) {
2581 if (IS_ZEBRA_DEBUG_RECV)
2582 zlog_debug("%s: Unable to decode zapi_sr_policy sent",
7d7be47e 2583 __func__);
31f937fb
SM		 2584 return;
2585 }
2586 zt = &zp.segment_list;
2587 if (zt->label_num < 1) {
2588 if (IS_ZEBRA_DEBUG_RECV)
2589 zlog_debug(
2590 "%s: SR-TE tunnel must contain at least one label",
7d7be47e 2591 __func__);
31f937fb
SM		 2592 return;
2593 }
2594
2595 if (!mpls_enabled)
2596 return;
2597
2598 policy = zebra_sr_policy_find(zp.color, &zp.endpoint);
2599 if (!policy)
2600 policy = zebra_sr_policy_add(zp.color, &zp.endpoint, zp.name);
2601 /* TODO: per-VRF list of SR-TE policies. */
2602 policy->zvrf = zvrf;
2603
2604 zebra_sr_policy_validate(policy, &zp.segment_list);
2605}
2606
2607static void zread_sr_policy_delete(ZAPI_HANDLER_ARGS)
2608{
2609 struct stream *s;
2610 struct zapi_sr_policy zp;
2611 struct zebra_sr_policy *policy;
2612
2613 /* Get input stream. */
2614 s = msg;
2615 if (zapi_sr_policy_decode(s, &zp) < 0) {
2616 if (IS_ZEBRA_DEBUG_RECV)
2617 zlog_debug("%s: Unable to decode zapi_sr_policy sent",
7d7be47e 2618 __func__);
31f937fb
SM		 2619 return;
2620 }
2621
2622 if (!mpls_enabled)
2623 return;
2624
2625 policy = zebra_sr_policy_find(zp.color, &zp.endpoint);
2626 if (!policy) {
2627 if (IS_ZEBRA_DEBUG_RECV)
7d7be47e 2628 zlog_debug("%s: Unable to find SR-TE policy", __func__);
31f937fb
SM		 2629 return;
2630 }
2631
2632 zebra_sr_policy_del(policy);
2633}
2634
2635int zsend_sr_policy_notify_status(uint32_t color, struct ipaddr *endpoint,
2636 char *name, int status)
2637{
2638 struct zserv *client;
2639 struct stream *s;
2640
2641 client = zserv_find_client(ZEBRA_ROUTE_SRTE, 0);
2642 if (!client) {
2643 if (IS_ZEBRA_DEBUG_PACKET)
2644 zlog_debug(
2645 "Not notifying pathd about policy %s"
2646 " status change to %d",
2647 name, status);
2648 return 0;
2649 }
2650
2651 if (IS_ZEBRA_DEBUG_PACKET)
2652 zlog_debug(
2653 "Notifying pathd about policy %s status change"
2654 " to %d",
2655 name, status);
2656
2657 s = stream_new(ZEBRA_MAX_PACKET_SIZ);
2658 stream_reset(s);
2659
2660 zclient_create_header(s, ZEBRA_SR_POLICY_NOTIFY_STATUS, VRF_DEFAULT);
2661 stream_putl(s, color);
2662 stream_put_ipaddr(s, endpoint);
2663 stream_write(s, name, SRTE_POLICY_NAME_MAX_LENGTH);
2664 stream_putl(s, status);
2665
2666 stream_putw_at(s, 0, stream_get_endp(s));
2667
2668 return zserv_send_message(client, s);
2669}
2670
581e797e
KS		 2671/* Send client close notify to client */
2672int zsend_client_close_notify(struct zserv *client, struct zserv *closed_client)
2673{
2674 struct stream *s = stream_new(ZEBRA_MAX_PACKET_SIZ);
2675
2676 zclient_create_header(s, ZEBRA_CLIENT_CLOSE_NOTIFY, VRF_DEFAULT);
2677
2678 stream_putc(s, closed_client->proto);
2679 stream_putw(s, closed_client->instance);
2680 stream_putl(s, closed_client->session_id);
2681
2682 stream_putw_at(s, 0, stream_get_endp(s));
2683
2684 return zserv_send_message(client, s);
2685}
2686
6e68a084
HS		 2687int zsend_srv6_manager_get_locator_chunk_response(struct zserv *client,
2688 vrf_id_t vrf_id,
2689 struct srv6_locator *loc)
2690{
1bda3e62 2691 struct srv6_locator_chunk chunk = {};
6e68a084
HS		 2692 struct stream *s = stream_new(ZEBRA_MAX_PACKET_SIZ);
2693
ac6a9479
HS		 2694 strlcpy(chunk.locator_name, loc->name, sizeof(chunk.locator_name));
2695 chunk.prefix = loc->prefix;
2696 chunk.block_bits_length = loc->block_bits_length;
2697 chunk.node_bits_length = loc->node_bits_length;
2698 chunk.function_bits_length = loc->function_bits_length;
2699 chunk.argument_bits_length = loc->argument_bits_length;
2700 chunk.keep = 0;
2701 chunk.proto = client->proto;
2702 chunk.instance = client->instance;
6e68a084 2703
ac6a9479
HS		 2704 zclient_create_header(s, ZEBRA_SRV6_MANAGER_GET_LOCATOR_CHUNK, vrf_id);
2705 zapi_srv6_locator_chunk_encode(s, &chunk);
6e68a084 2706 stream_putw_at(s, 0, stream_get_endp(s));
6e68a084
HS		 2707 return zserv_send_message(client, s);
2708}
2709
bf094f69
QY		 2710/* Send response to a table manager connect request to client */
2711static void zread_table_manager_connect(struct zserv *client,
2712 struct stream *msg, vrf_id_t vrf_id)
2713{
2714 struct stream *s;
2715 uint8_t proto;
2716 uint16_t instance;
c479e756 2717 struct vrf *vrf = vrf_lookup_by_id(vrf_id);
bf094f69
QY		 2718
2719 s = msg;
2720
2721 /* Get data. */
2722 STREAM_GETC(s, proto);
2723 STREAM_GETW(s, instance);
2724
2725 /* accept only dynamic routing protocols */
2726 if ((proto >= ZEBRA_ROUTE_MAX) || (proto <= ZEBRA_ROUTE_STATIC)) {
e914ccbe 2727 flog_err(EC_ZEBRA_TM_WRONG_PROTO,
1c50c1c0
QY		 2728 "client %d has wrong protocol %s", client->sock,
2729 zebra_route_string(proto));
bf094f69
QY		 2730 zsend_table_manager_connect_response(client, vrf_id, 1);
2731 return;
2732 }
c479e756
DS		 2733 zlog_notice("client %d with vrf %s(%u) instance %u connected as %s",
2734 client->sock, VRF_LOGNAME(vrf), vrf_id, instance,
2735 zebra_route_string(proto));
bf094f69
QY		 2736 client->proto = proto;
2737 client->instance = instance;
2738
2739 /*
2740 * Release previous labels of same protocol and instance.
2741 * This is done in case it restarted from an unexpected shutdown.
2742 */
453844ab 2743 release_daemon_table_chunks(client);
bf094f69
QY		 2744
2745 zsend_table_manager_connect_response(client, vrf_id, 0);
2746
2747stream_failure:
2748 return;
2749}
2750
2751static void zread_label_manager_connect(struct zserv *client,
2752 struct stream *msg, vrf_id_t vrf_id)
2753{
2754 struct stream *s;
2755 /* type of protocol (lib/zebra.h) */
2756 uint8_t proto;
2757 unsigned short instance;
2758
2759 /* Get input stream. */
2760 s = msg;
2761
2762 /* Get data. */
2763 STREAM_GETC(s, proto);
2764 STREAM_GETW(s, instance);
2765
2766 /* accept only dynamic routing protocols */
2767 if ((proto >= ZEBRA_ROUTE_MAX) || (proto <= ZEBRA_ROUTE_STATIC)) {
e914ccbe 2768 flog_err(EC_ZEBRA_TM_WRONG_PROTO,
1c50c1c0
QY		 2769 "client %d has wrong protocol %s", client->sock,
2770 zebra_route_string(proto));
e11d7c96 2771 zsend_label_manager_connect_response(client, vrf_id, 1);
bf094f69
QY		 2772 return;
2773 }
e11d7c96
EDP		 2774
2775 /* recall proto and instance in this socket */
bf094f69
QY		 2776 client->proto = proto;
2777 client->instance = instance;
2778
e11d7c96 2779 /* call hook for connection using wrapper */
4cebdb9b 2780 lm_client_connect_call(client, vrf_id);
bf094f69
QY		 2781
2782stream_failure:
2783 return;
2784}
2785
2786static void zread_get_label_chunk(struct zserv *client, struct stream *msg,
2787 vrf_id_t vrf_id)
2788{
2789 struct stream *s;
2790 uint8_t keep;
0e3b6a92 2791 uint32_t size, base;
e11d7c96 2792 struct label_manager_chunk *lmc = NULL;
5dffb0e9
FR		 2793 uint8_t proto;
2794 unsigned short instance;
bf094f69
QY		 2795
2796 /* Get input stream. */
2797 s = msg;
2798
2799 /* Get data. */
5dffb0e9
FR		 2800 STREAM_GETC(s, proto);
2801 STREAM_GETW(s, instance);
bf094f69
QY		 2802 STREAM_GETC(s, keep);
2803 STREAM_GETL(s, size);
0e3b6a92 2804 STREAM_GETL(s, base);
bf094f69 2805
4cebdb9b
MS		 2806 assert(proto == client->proto && instance == client->instance);
2807
e11d7c96 2808 /* call hook to get a chunk using wrapper */
4cebdb9b 2809 lm_get_chunk_call(&lmc, client, keep, size, base, vrf_id);
bf094f69 2810
bf094f69
QY		 2811stream_failure:
2812 return;
2813}
2814
2815static void zread_release_label_chunk(struct zserv *client, struct stream *msg)
2816{
2817 struct stream *s;
2818 uint32_t start, end;
5dffb0e9
FR		 2819 uint8_t proto;
2820 unsigned short instance;
bf094f69
QY		 2821
2822 /* Get input stream. */
2823 s = msg;
2824
2825 /* Get data. */
5dffb0e9
FR		 2826 STREAM_GETC(s, proto);
2827 STREAM_GETW(s, instance);
bf094f69
QY		 2828 STREAM_GETL(s, start);
2829 STREAM_GETL(s, end);
2830
4cebdb9b
MS		 2831 assert(proto == client->proto && instance == client->instance);
2832
e11d7c96 2833 /* call hook to release a chunk using wrapper */
4cebdb9b 2834 lm_release_chunk_call(client, start, end);
bf094f69
QY		 2835
2836stream_failure:
2837 return;
2838}
e11d7c96 2839
bf094f69
QY		 2840static void zread_label_manager_request(ZAPI_HANDLER_ARGS)
2841{
e11d7c96
EDP		 2842 if (hdr->command == ZEBRA_LABEL_MANAGER_CONNECT
2843 || hdr->command == ZEBRA_LABEL_MANAGER_CONNECT_ASYNC)
2844 zread_label_manager_connect(client, msg, zvrf_id(zvrf));
bf094f69 2845 else {
e11d7c96
EDP		 2846 if (hdr->command == ZEBRA_GET_LABEL_CHUNK)
2847 zread_get_label_chunk(client, msg, zvrf_id(zvrf));
2848 else if (hdr->command == ZEBRA_RELEASE_LABEL_CHUNK)
2849 zread_release_label_chunk(client, msg);
bf094f69
QY		 2850 }
2851}
2852
2853static void zread_get_table_chunk(struct zserv *client, struct stream *msg,
2854 vrf_id_t vrf_id)
2855{
2856 struct stream *s;
2857 uint32_t size;
2858 struct table_manager_chunk *tmc;
2859
2860 /* Get input stream. */
2861 s = msg;
2862
2863 /* Get data. */
2864 STREAM_GETL(s, size);
2865
2866 tmc = assign_table_chunk(client->proto, client->instance, size);
2867 if (!tmc)
e914ccbe 2868 flog_err(EC_ZEBRA_TM_CANNOT_ASSIGN_CHUNK,
1c50c1c0
QY		 2869 "%s: Unable to assign Table Chunk of size %u",
2870 __func__, size);
bf094f69
QY		 2871 else
2872 zlog_debug("Assigned Table Chunk %u - %u", tmc->start,
2873 tmc->end);
2874 /* send response back */
2875 zsend_assign_table_chunk_response(client, vrf_id, tmc);
2876
2877stream_failure:
2878 return;
2879}
2880
2881static void zread_release_table_chunk(struct zserv *client, struct stream *msg)
2882{
2883 struct stream *s;
2884 uint32_t start, end;
2885
2886 /* Get input stream. */
2887 s = msg;
2888
2889 /* Get data. */
2890 STREAM_GETL(s, start);
2891 STREAM_GETL(s, end);
2892
2893 release_table_chunk(client->proto, client->instance, start, end);
2894
2895stream_failure:
2896 return;
2897}
2898
2899static void zread_table_manager_request(ZAPI_HANDLER_ARGS)
2900{
16bd37d6 2901 /* to avoid sending other messages like ZEBRA_INTERFACE_UP */
bf094f69
QY		 2902 if (hdr->command == ZEBRA_TABLE_MANAGER_CONNECT)
2903 zread_table_manager_connect(client, msg, zvrf_id(zvrf));
2904 else {
2905 /* Sanity: don't allow 'unidentified' requests */
2906 if (!client->proto) {
af4c2728 2907 flog_err(
e914ccbe 2908 EC_ZEBRA_TM_ALIENS,
16bd37d6 2909 "Got SRv6 request from an unidentified client");
bf094f69
QY		 2910 return;
2911 }
2912 if (hdr->command == ZEBRA_GET_TABLE_CHUNK)
2913 zread_get_table_chunk(client, msg, zvrf_id(zvrf));
2914 else if (hdr->command == ZEBRA_RELEASE_TABLE_CHUNK)
2915 zread_release_table_chunk(client, msg);
2916 }
2917}
2918
6e68a084
HS		 2919static void zread_srv6_manager_get_locator_chunk(struct zserv *client,
2920 struct stream *msg,
2921 vrf_id_t vrf_id)
2922{
2923 struct stream *s = msg;
6e68a084
HS		 2924 uint16_t len;
2925 char locator_name[SRV6_LOCNAME_SIZE] = {0};
2926
2927 /* Get data. */
6e68a084
HS		 2928 STREAM_GETW(s, len);
2929 STREAM_GET(locator_name, s, len);
2930
6e68a084
HS		 2931 /* call hook to get a chunk using wrapper */
2932 struct srv6_locator *loc = NULL;
2933 srv6_manager_get_locator_chunk_call(&loc, client, locator_name, vrf_id);
2934
2935stream_failure:
2936 return;
2937}
2938
2939static void zread_srv6_manager_release_locator_chunk(struct zserv *client,
2940 struct stream *msg,
2941 vrf_id_t vrf_id)
2942{
2943 struct stream *s = msg;
6e68a084
HS		 2944 uint16_t len;
2945 char locator_name[SRV6_LOCNAME_SIZE] = {0};
2946
2947 /* Get data. */
6e68a084
HS		 2948 STREAM_GETW(s, len);
2949 STREAM_GET(locator_name, s, len);
2950
6e68a084
HS		 2951 /* call hook to release a chunk using wrapper */
2952 srv6_manager_release_locator_chunk_call(client, locator_name, vrf_id);
2953
2954stream_failure:
2955 return;
2956}
2957
2958static void zread_srv6_manager_request(ZAPI_HANDLER_ARGS)
2959{
2960 switch (hdr->command) {
6e68a084
HS		 2961 case ZEBRA_SRV6_MANAGER_GET_LOCATOR_CHUNK:
2962 zread_srv6_manager_get_locator_chunk(client, msg,
2963 zvrf_id(zvrf));
2964 break;
2965 case ZEBRA_SRV6_MANAGER_RELEASE_LOCATOR_CHUNK:
2966 zread_srv6_manager_release_locator_chunk(client, msg,
2967 zvrf_id(zvrf));
2968 break;
2969 default:
9f900cda 2970 zlog_err("%s: unknown SRv6 Manager command", __func__);
6e68a084
HS		 2971 break;
2972 }
2973}
2974
bf094f69
QY		 2975static void zread_pseudowire(ZAPI_HANDLER_ARGS)
2976{
2977 struct stream *s;
2978 char ifname[IF_NAMESIZE];
2979 ifindex_t ifindex;
2980 int type;
2981 int af;
2982 union g_addr nexthop;
2983 uint32_t local_label;
2984 uint32_t remote_label;
2985 uint8_t flags;
2986 union pw_protocol_fields data;
2987 uint8_t protocol;
2988 struct zebra_pw *pw;
2989
2990 /* Get input stream. */
2991 s = msg;
2992
2993 /* Get data. */
2994 STREAM_GET(ifname, s, IF_NAMESIZE);
f223b3d1 2995 ifname[IF_NAMESIZE - 1] = '\0';
bf094f69
QY		 2996 STREAM_GETL(s, ifindex);
2997 STREAM_GETL(s, type);
2998 STREAM_GETL(s, af);
2999 switch (af) {
3000 case AF_INET:
3001 STREAM_GET(&nexthop.ipv4.s_addr, s, IPV4_MAX_BYTELEN);
3002 break;
3003 case AF_INET6:
3004 STREAM_GET(&nexthop.ipv6, s, 16);
3005 break;
3006 default:
3007 return;
3008 }
3009 STREAM_GETL(s, local_label);
3010 STREAM_GETL(s, remote_label);
3011 STREAM_GETC(s, flags);
3012 STREAM_GET(&data, s, sizeof(data));
3013 protocol = client->proto;
3014
3015 pw = zebra_pw_find(zvrf, ifname);
3016 switch (hdr->command) {
3017 case ZEBRA_PW_ADD:
3018 if (pw) {
e914ccbe 3019 flog_warn(EC_ZEBRA_PSEUDOWIRE_EXISTS,
9df414fe 3020 "%s: pseudowire %s already exists [%s]",
bf094f69
QY		 3021 __func__, ifname,
3022 zserv_command_string(hdr->command));
3023 return;
3024 }
3025
3026 zebra_pw_add(zvrf, ifname, protocol, client);
3027 break;
3028 case ZEBRA_PW_DELETE:
3029 if (!pw) {
e914ccbe 3030 flog_warn(EC_ZEBRA_PSEUDOWIRE_NONEXISTENT,
9df414fe 3031 "%s: pseudowire %s not found [%s]", __func__,
bf094f69
QY		 3032 ifname, zserv_command_string(hdr->command));
3033 return;
3034 }
3035
3036 zebra_pw_del(zvrf, pw);
3037 break;
3038 case ZEBRA_PW_SET:
3039 case ZEBRA_PW_UNSET:
3040 if (!pw) {
e914ccbe 3041 flog_warn(EC_ZEBRA_PSEUDOWIRE_NONEXISTENT,
9df414fe 3042 "%s: pseudowire %s not found [%s]", __func__,
bf094f69
QY		 3043 ifname, zserv_command_string(hdr->command));
3044 return;
3045 }
3046
3047 switch (hdr->command) {
3048 case ZEBRA_PW_SET:
3049 pw->enabled = 1;
3050 break;
3051 case ZEBRA_PW_UNSET:
3052 pw->enabled = 0;
3053 break;
3054 }
3055
3056 zebra_pw_change(pw, ifindex, type, af, &nexthop, local_label,
3057 remote_label, flags, &data);
3058 break;
3059 }
3060
3061stream_failure:
3062 return;
3063}
3064
3065static void zread_interface_set_master(ZAPI_HANDLER_ARGS)
3066{
3067 struct interface *master;
3068 struct interface *slave;
3069 struct stream *s = msg;
3070 int ifindex;
3071 vrf_id_t vrf_id;
3072
3073 STREAM_GETL(s, vrf_id);
3074 STREAM_GETL(s, ifindex);
3075 master = if_lookup_by_index(ifindex, vrf_id);
3076
3077 STREAM_GETL(s, vrf_id);
3078 STREAM_GETL(s, ifindex);
3079 slave = if_lookup_by_index(ifindex, vrf_id);
3080
3081 if (!master || !slave)
3082 return;
3083
3084 kernel_interface_set_master(master, slave);
3085
3086stream_failure:
3087 return;
3088}
3089
3090
3091static void zread_vrf_label(ZAPI_HANDLER_ARGS)
3092{
3093 struct interface *ifp;
3094 mpls_label_t nlabel;
3095 afi_t afi;
3096 struct stream *s;
3097 struct zebra_vrf *def_zvrf;
3098 enum lsp_types_t ltype;
3099
3100 s = msg;
3101 STREAM_GETL(s, nlabel);
3102 STREAM_GETC(s, afi);
663d3a91
QY		 3103
3104 if (!(IS_VALID_AFI(afi))) {
3105 zlog_warn("Invalid AFI for VRF label: %u", afi);
3106 return;
3107 }
3108
bf094f69
QY		 3109 if (nlabel == zvrf->label[afi]) {
3110 /*
3111 * Nothing to do here move along
3112 */
3113 return;
3114 }
3115
3116 STREAM_GETC(s, ltype);
3117
3118 if (zvrf->vrf->vrf_id != VRF_DEFAULT)
a36898e7 3119 ifp = if_lookup_by_name(zvrf->vrf->name, zvrf->vrf->vrf_id);
bf094f69 3120 else
a36898e7 3121 ifp = if_lookup_by_name("lo", VRF_DEFAULT);
bf094f69
QY		 3122
3123 if (!ifp) {
3124 zlog_debug("Unable to find specified Interface for %s",
3125 zvrf->vrf->name);
3126 return;
3127 }
3128
3129 def_zvrf = zebra_vrf_lookup_by_id(VRF_DEFAULT);
3130
3131 if (zvrf->label[afi] != MPLS_LABEL_NONE) {
3132 afi_t scrubber;
3133 bool really_remove;
3134
3135 really_remove = true;
3136 for (scrubber = AFI_IP; scrubber < AFI_MAX; scrubber++) {
3137 if (scrubber == afi)
3138 continue;
3139
3140 if (zvrf->label[scrubber] == MPLS_LABEL_NONE)
3141 continue;
3142
3143 if (zvrf->label[afi] == zvrf->label[scrubber]) {
3144 really_remove = false;
3145 break;
3146 }
3147 }
3148
3149 if (really_remove)
3150 mpls_lsp_uninstall(def_zvrf, ltype, zvrf->label[afi],
3151 NEXTHOP_TYPE_IFINDEX, NULL,
cc1b9746 3152 ifp->ifindex, false /*backup*/);
bf094f69
QY		 3153 }
3154
5065db0a
RW		 3155 if (nlabel != MPLS_LABEL_NONE) {
3156 mpls_label_t out_label = MPLS_LABEL_IMPLICIT_NULL;
3157 mpls_lsp_install(def_zvrf, ltype, nlabel, 1, &out_label,
3158 NEXTHOP_TYPE_IFINDEX, NULL, ifp->ifindex);
3159 }
bf094f69
QY		 3160
3161 zvrf->label[afi] = nlabel;
06302ecb
DS		 3162 zvrf->label_proto[afi] = client->proto;
3163
bf094f69
QY		 3164stream_failure:
3165 return;
3166}
3167
3168static inline void zread_rule(ZAPI_HANDLER_ARGS)
3169{
3170 struct zebra_pbr_rule zpr;
3171 struct stream *s;
3172 uint32_t total, i;
58a1d249 3173 char ifname[INTERFACE_NAMSIZ + 1] = {};
bf094f69
QY		 3174
3175 s = msg;
3176 STREAM_GETL(s, total);
3177
3178 for (i = 0; i < total; i++) {
3179 memset(&zpr, 0, sizeof(zpr));
3180
3181 zpr.sock = client->sock;
3182 zpr.rule.vrf_id = hdr->vrf_id;
3183 STREAM_GETL(s, zpr.rule.seq);
3184 STREAM_GETL(s, zpr.rule.priority);
3185 STREAM_GETL(s, zpr.rule.unique);
f56697ef 3186 STREAM_GETC(s, zpr.rule.filter.ip_proto);
bf094f69
QY		 3187 STREAM_GETC(s, zpr.rule.filter.src_ip.family);
3188 STREAM_GETC(s, zpr.rule.filter.src_ip.prefixlen);
3189 STREAM_GET(&zpr.rule.filter.src_ip.u.prefix, s,
3190 prefix_blen(&zpr.rule.filter.src_ip));
3191 STREAM_GETW(s, zpr.rule.filter.src_port);
3192 STREAM_GETC(s, zpr.rule.filter.dst_ip.family);
3193 STREAM_GETC(s, zpr.rule.filter.dst_ip.prefixlen);
3194 STREAM_GET(&zpr.rule.filter.dst_ip.u.prefix, s,
3195 prefix_blen(&zpr.rule.filter.dst_ip));
3196 STREAM_GETW(s, zpr.rule.filter.dst_port);
01f23aff 3197 STREAM_GETC(s, zpr.rule.filter.dsfield);
bf094f69
QY		 3198 STREAM_GETL(s, zpr.rule.filter.fwmark);
3199 STREAM_GETL(s, zpr.rule.action.table);
58a1d249 3200 STREAM_GET(ifname, s, INTERFACE_NAMSIZ);
bf094f69 3201
58a1d249
DS		 3202 strlcpy(zpr.ifname, ifname, sizeof(zpr.ifname));
3203 strlcpy(zpr.rule.ifname, ifname, sizeof(zpr.rule.ifname));
bf094f69
QY		 3204
3205 if (!is_default_prefix(&zpr.rule.filter.src_ip))
3206 zpr.rule.filter.filter_bm |= PBR_FILTER_SRC_IP;
3207
3208 if (!is_default_prefix(&zpr.rule.filter.dst_ip))
3209 zpr.rule.filter.filter_bm |= PBR_FILTER_DST_IP;
3210
3211 if (zpr.rule.filter.src_port)
3212 zpr.rule.filter.filter_bm |= PBR_FILTER_SRC_PORT;
3213
3214 if (zpr.rule.filter.dst_port)
3215 zpr.rule.filter.filter_bm |= PBR_FILTER_DST_PORT;
3216
01f23aff
WC		 3217 if (zpr.rule.filter.dsfield)
3218 zpr.rule.filter.filter_bm |= PBR_FILTER_DSFIELD;
3219
f56697ef
DS		 3220 if (zpr.rule.filter.ip_proto)
3221 zpr.rule.filter.filter_bm |= PBR_FILTER_IP_PROTOCOL;
3222
bf094f69
QY		 3223 if (zpr.rule.filter.fwmark)
3224 zpr.rule.filter.filter_bm |= PBR_FILTER_FWMARK;
3225
4719fd76
QY		 3226 if (!(zpr.rule.filter.src_ip.family == AF_INET
3227 || zpr.rule.filter.src_ip.family == AF_INET6)) {
cc815be7 3228 zlog_warn(
6cde4b45 3229 "Unsupported PBR source IP family: %s (%hhu)",
cc815be7
QY		 3230 family2str(zpr.rule.filter.src_ip.family),
3231 zpr.rule.filter.src_ip.family);
4719fd76
QY		 3232 return;
3233 }
3234 if (!(zpr.rule.filter.dst_ip.family == AF_INET
3235 || zpr.rule.filter.dst_ip.family == AF_INET6)) {
cec72d49 3236 zlog_warn(
6cde4b45 3237 "Unsupported PBR destination IP family: %s (%hhu)",
cec72d49
DA		 3238 family2str(zpr.rule.filter.dst_ip.family),
3239 zpr.rule.filter.dst_ip.family);
4719fd76
QY		 3240 return;
3241 }
3242
3243
7f0ea8a4 3244 zpr.vrf_id = zvrf->vrf->vrf_id;
bf094f69 3245 if (hdr->command == ZEBRA_RULE_ADD)
7f0ea8a4 3246 zebra_pbr_add_rule(&zpr);
bf094f69 3247 else
7f0ea8a4 3248 zebra_pbr_del_rule(&zpr);
bf094f69
QY		 3249 }
3250
3251stream_failure:
3252 return;
3253}
3254
3255static inline void zread_ipset(ZAPI_HANDLER_ARGS)
3256{
3257 struct zebra_pbr_ipset zpi;
3258 struct stream *s;
3259 uint32_t total, i;
3260
3261 s = msg;
3262 STREAM_GETL(s, total);
3263
3264 for (i = 0; i < total; i++) {
3265 memset(&zpi, 0, sizeof(zpi));
3266
3267 zpi.sock = client->sock;
be2028d1 3268 zpi.vrf_id = zvrf->vrf->vrf_id;
bf094f69
QY		 3269 STREAM_GETL(s, zpi.unique);
3270 STREAM_GETL(s, zpi.type);
a60b7031 3271 STREAM_GETC(s, zpi.family);
bf094f69
QY		 3272 STREAM_GET(&zpi.ipset_name, s, ZEBRA_IPSET_NAME_SIZE);
3273
3274 if (hdr->command == ZEBRA_IPSET_CREATE)
62f20a52 3275 zebra_pbr_create_ipset(&zpi);
bf094f69 3276 else
62f20a52 3277 zebra_pbr_destroy_ipset(&zpi);
bf094f69
QY		 3278 }
3279
3280stream_failure:
3281 return;
3282}
3283
3284static inline void zread_ipset_entry(ZAPI_HANDLER_ARGS)
3285{
3286 struct zebra_pbr_ipset_entry zpi;
3287 struct zebra_pbr_ipset ipset;
3288 struct stream *s;
3289 uint32_t total, i;
3290
3291 s = msg;
3292 STREAM_GETL(s, total);
3293
3294 for (i = 0; i < total; i++) {
3295 memset(&zpi, 0, sizeof(zpi));
3296 memset(&ipset, 0, sizeof(ipset));
3297
3298 zpi.sock = client->sock;
3299 STREAM_GETL(s, zpi.unique);
3300 STREAM_GET(&ipset.ipset_name, s, ZEBRA_IPSET_NAME_SIZE);
261462c3 3301 ipset.ipset_name[ZEBRA_IPSET_NAME_SIZE - 1] = '\0';
bf094f69
QY		 3302 STREAM_GETC(s, zpi.src.family);
3303 STREAM_GETC(s, zpi.src.prefixlen);
3304 STREAM_GET(&zpi.src.u.prefix, s, prefix_blen(&zpi.src));
3305 STREAM_GETC(s, zpi.dst.family);
3306 STREAM_GETC(s, zpi.dst.prefixlen);
3307 STREAM_GET(&zpi.dst.u.prefix, s, prefix_blen(&zpi.dst));
3308
25d760c5
PG		 3309 STREAM_GETW(s, zpi.src_port_min);
3310 STREAM_GETW(s, zpi.src_port_max);
3311 STREAM_GETW(s, zpi.dst_port_min);
3312 STREAM_GETW(s, zpi.dst_port_max);
3313 STREAM_GETC(s, zpi.proto);
bf094f69
QY		 3314 if (!is_default_prefix(&zpi.src))
3315 zpi.filter_bm |= PBR_FILTER_SRC_IP;
3316
3317 if (!is_default_prefix(&zpi.dst))
3318 zpi.filter_bm |= PBR_FILTER_DST_IP;
be729dd7 3319 if (zpi.dst_port_min != 0 || zpi.proto == IPPROTO_ICMP)
25d760c5 3320 zpi.filter_bm |= PBR_FILTER_DST_PORT;
be729dd7 3321 if (zpi.src_port_min != 0 || zpi.proto == IPPROTO_ICMP)
25d760c5
PG		 3322 zpi.filter_bm |= PBR_FILTER_SRC_PORT;
3323 if (zpi.dst_port_max != 0)
3324 zpi.filter_bm |= PBR_FILTER_DST_PORT_RANGE;
3325 if (zpi.src_port_max != 0)
3326 zpi.filter_bm |= PBR_FILTER_SRC_PORT_RANGE;
3327 if (zpi.proto != 0)
3328 zpi.filter_bm |= PBR_FILTER_PROTO;
bf094f69 3329
9863725c
QY		 3330 if (!(zpi.dst.family == AF_INET
3331 || zpi.dst.family == AF_INET6)) {
cec72d49 3332 zlog_warn(
6cde4b45 3333 "Unsupported PBR destination IP family: %s (%hhu)",
cec72d49 3334 family2str(zpi.dst.family), zpi.dst.family);
9863725c
QY		 3335 goto stream_failure;
3336 }
3337 if (!(zpi.src.family == AF_INET
3338 || zpi.src.family == AF_INET6)) {
cec72d49 3339 zlog_warn(
6cde4b45 3340 "Unsupported PBR source IP family: %s (%hhu)",
cec72d49 3341 family2str(zpi.src.family), zpi.src.family);
9863725c
QY		 3342 goto stream_failure;
3343 }
3344
bf094f69 3345 /* calculate backpointer */
62f20a52
DS		 3346 zpi.backpointer =
3347 zebra_pbr_lookup_ipset_pername(ipset.ipset_name);
f096bae4
DS		 3348
3349 if (!zpi.backpointer) {
3350 zlog_warn("ipset name specified: %s does not exist",
3351 ipset.ipset_name);
3352 goto stream_failure;
3353 }
3354
bf094f69 3355 if (hdr->command == ZEBRA_IPSET_ENTRY_ADD)
62f20a52 3356 zebra_pbr_add_ipset_entry(&zpi);
bf094f69 3357 else
62f20a52 3358 zebra_pbr_del_ipset_entry(&zpi);
bf094f69
QY		 3359 }
3360
3361stream_failure:
3362 return;
3363}
3364
05657ec2 3365
7723e8d3
PG		 3366static inline void zebra_neigh_register(ZAPI_HANDLER_ARGS)
3367{
3368 afi_t afi;
3369
3370 STREAM_GETW(msg, afi);
3371 if (afi <= AFI_UNSPEC || afi >= AFI_MAX) {
3372 zlog_warn(
3373 "Invalid AFI %u while registering for neighbors notifications",
3374 afi);
3375 goto stream_failure;
3376 }
3377 vrf_bitmap_set(client->nhrp_neighinfo[afi], zvrf_id(zvrf));
3378stream_failure:
3379 return;
3380}
3381
3382static inline void zebra_neigh_unregister(ZAPI_HANDLER_ARGS)
3383{
3384 afi_t afi;
3385
3386 STREAM_GETW(msg, afi);
3387 if (afi <= AFI_UNSPEC || afi >= AFI_MAX) {
3388 zlog_warn(
3389 "Invalid AFI %u while unregistering from neighbor notifications",
3390 afi);
3391 goto stream_failure;
3392 }
3393 vrf_bitmap_unset(client->nhrp_neighinfo[afi], zvrf_id(zvrf));
3394stream_failure:
3395 return;
3396}
3397
d17af8dd
PG		 3398static inline void zebra_gre_get(ZAPI_HANDLER_ARGS)
3399{
3400 struct stream *s;
3401 ifindex_t idx;
3402 struct interface *ifp;
3403 struct zebra_if *zebra_if = NULL;
3404 struct zebra_l2info_gre *gre_info;
3405 struct interface *ifp_link = NULL;
3406 vrf_id_t vrf_id_link = VRF_UNKNOWN;
3407 vrf_id_t vrf_id = zvrf->vrf->vrf_id;
3408
3409 s = msg;
3410 STREAM_GETL(s, idx);
3411 ifp = if_lookup_by_index(idx, vrf_id);
3412
3413 if (ifp)
3414 zebra_if = ifp->info;
3415
3416 s = stream_new(ZEBRA_MAX_PACKET_SIZ);
3417
3418 zclient_create_header(s, ZEBRA_GRE_UPDATE, vrf_id);
3419
3420 if (ifp && IS_ZEBRA_IF_GRE(ifp) && zebra_if) {
3421 gre_info = &zebra_if->l2info.gre;
3422
3423 stream_putl(s, idx);
3424 stream_putl(s, gre_info->ikey);
3425 stream_putl(s, gre_info->ikey);
3426 stream_putl(s, gre_info->ifindex_link);
3427
3428 ifp_link = if_lookup_by_index_per_ns(
3429 zebra_ns_lookup(gre_info->link_nsid),
3430 gre_info->ifindex_link);
3431 if (ifp_link)
3432 vrf_id_link = ifp_link->vrf_id;
3433 stream_putl(s, vrf_id_link);
3434 stream_putl(s, gre_info->vtep_ip.s_addr);
3435 stream_putl(s, gre_info->vtep_ip_remote.s_addr);
3436 } else {
3437 stream_putl(s, idx);
3438 stream_putl(s, 0);
3439 stream_putl(s, 0);
3440 stream_putl(s, IFINDEX_INTERNAL);
3441 stream_putl(s, VRF_UNKNOWN);
3442 stream_putl(s, 0);
3443 }
3444 /* Write packet size. */
3445 stream_putw_at(s, 0, stream_get_endp(s));
3446 zserv_send_message(client, s);
3447
3448 return;
3449 stream_failure:
3450 return;
3451}
3452
541025d6
PG		 3453static inline void zebra_configure_arp(ZAPI_HANDLER_ARGS)
3454{
3455 struct stream *s;
e18747a9 3456 uint8_t fam;
541025d6
PG		 3457 ifindex_t idx;
3458 struct interface *ifp;
541025d6
PG		 3459
3460 s = msg;
3461 STREAM_GETC(s, fam);
3462 if (fam != AF_INET && fam != AF_INET6)
3463 return;
3464 STREAM_GETL(s, idx);
3465 ifp = if_lookup_by_index_per_ns(zvrf->zns, idx);
3466 if (!ifp)
3467 return;
e18747a9 3468 dplane_neigh_table_update(ifp, fam, 1, 0, 0);
541025d6
PG		 3469stream_failure:
3470 return;
3471}
3472
d603c077 3473static inline void zebra_neigh_ip_add(ZAPI_HANDLER_ARGS)
05657ec2
PG		 3474{
3475 struct stream *s;
d603c077 3476 struct zapi_neigh_ip api = {};
05657ec2 3477 int ret;
0a27a2fe 3478 const struct interface *ifp;
05657ec2
PG		 3479
3480 s = msg;
d603c077 3481 ret = zclient_neigh_ip_decode(s, &api);
05657ec2
PG		 3482 if (ret < 0)
3483 return;
0a27a2fe
PG		 3484 ifp = if_lookup_by_index(api.index, zvrf_id(zvrf));
3485 if (!ifp)
3486 return;
3487 dplane_neigh_ip_update(DPLANE_OP_NEIGH_IP_INSTALL, ifp, &api.ip_out,
d603c077 3488 &api.ip_in, api.ndm_state, client->proto);
05657ec2
PG		 3489}
3490
0a27a2fe 3491
d603c077 3492static inline void zebra_neigh_ip_del(ZAPI_HANDLER_ARGS)
05657ec2
PG		 3493{
3494 struct stream *s;
d603c077 3495 struct zapi_neigh_ip api = {};
05657ec2 3496 int ret;
0a27a2fe 3497 struct interface *ifp;
05657ec2 3498
05657ec2 3499 s = msg;
d603c077 3500 ret = zclient_neigh_ip_decode(s, &api);
05657ec2
PG		 3501 if (ret < 0)
3502 return;
0a27a2fe
PG		 3503 ifp = if_lookup_by_index(api.index, zvrf_id(zvrf));
3504 if (!ifp)
3505 return;
3506 dplane_neigh_ip_update(DPLANE_OP_NEIGH_IP_DELETE, ifp, &api.ip_out,
d603c077 3507 &api.ip_in, api.ndm_state, client->proto);
05657ec2
PG		 3508}
3509
3510
bf094f69
QY		 3511static inline void zread_iptable(ZAPI_HANDLER_ARGS)
3512{
8b5c4dce
QY		 3513 struct zebra_pbr_iptable *zpi =
3514 XCALLOC(MTYPE_TMP, sizeof(struct zebra_pbr_iptable));
bf094f69
QY		 3515 struct stream *s;
3516
3517 s = msg;
3518
8b5c4dce
QY		 3519 zpi->interface_name_list = list_new();
3520 zpi->sock = client->sock;
3521 zpi->vrf_id = zvrf->vrf->vrf_id;
3522 STREAM_GETL(s, zpi->unique);
3523 STREAM_GETL(s, zpi->type);
3524 STREAM_GETL(s, zpi->filter_bm);
3525 STREAM_GETL(s, zpi->action);
3526 STREAM_GETL(s, zpi->fwmark);
3527 STREAM_GET(&zpi->ipset_name, s, ZEBRA_IPSET_NAME_SIZE);
a60b7031 3528 STREAM_GETC(s, zpi->family);
8b5c4dce
QY		 3529 STREAM_GETW(s, zpi->pkt_len_min);
3530 STREAM_GETW(s, zpi->pkt_len_max);
3531 STREAM_GETW(s, zpi->tcp_flags);
3532 STREAM_GETW(s, zpi->tcp_mask_flags);
3533 STREAM_GETC(s, zpi->dscp_value);
3534 STREAM_GETC(s, zpi->fragment);
3535 STREAM_GETC(s, zpi->protocol);
a60b7031 3536 STREAM_GETW(s, zpi->flow_label);
8b5c4dce
QY		 3537 STREAM_GETL(s, zpi->nb_interface);
3538 zebra_pbr_iptable_update_interfacelist(s, zpi);
bf094f69
QY		 3539
3540 if (hdr->command == ZEBRA_IPTABLE_ADD)
8b5c4dce 3541 zebra_pbr_add_iptable(zpi);
bf094f69 3542 else
8b5c4dce
QY		 3543 zebra_pbr_del_iptable(zpi);
3544
bf094f69 3545stream_failure:
8b5c4dce
QY		 3546 zebra_pbr_iptable_free(zpi);
3547 zpi = NULL;
bf094f69
QY		 3548 return;
3549}
3550
d68e74b4
JU		 3551static inline void zread_neigh_discover(ZAPI_HANDLER_ARGS)
3552{
3553 struct stream *s;
3554 ifindex_t ifindex;
3555 struct interface *ifp;
3556 struct prefix p;
3557 struct ipaddr ip;
3558
3559 s = msg;
3560
3561 STREAM_GETL(s, ifindex);
3562
3563 ifp = if_lookup_by_index_per_ns(zvrf->zns, ifindex);
3564 if (!ifp) {
3565 zlog_debug("Failed to lookup ifindex: %u", ifindex);
3566 return;
3567 }
3568
3569 STREAM_GETC(s, p.family);
3570 STREAM_GETC(s, p.prefixlen);
3571 STREAM_GET(&p.u.prefix, s, prefix_blen(&p));
3572
3573 if (p.family == AF_INET)
3574 SET_IPADDR_V4(&ip);
3575 else
3576 SET_IPADDR_V6(&ip);
3577
3578 memcpy(&ip.ip.addr, &p.u.prefix, prefix_blen(&p));
3579
3580 dplane_neigh_discover(ifp, &ip);
3581
3582stream_failure:
3583 return;
3584}
3585
b716ab61
PG		 3586static inline void zebra_gre_source_set(ZAPI_HANDLER_ARGS)
3587{
3588 struct stream *s;
3589 ifindex_t idx, link_idx;
3590 vrf_id_t link_vrf_id;
3591 struct interface *ifp;
3592 struct interface *ifp_link;
b716ab61 3593 vrf_id_t vrf_id = zvrf->vrf->vrf_id;
62b4b7e4
PG		 3594 struct zebra_if *zif, *gre_zif;
3595 struct zebra_l2info_gre *gre_info;
db51f0cd 3596 unsigned int mtu;
b716ab61
PG		 3597
3598 s = msg;
3599 STREAM_GETL(s, idx);
3600 ifp = if_lookup_by_index(idx, vrf_id);
3601 STREAM_GETL(s, link_idx);
3602 STREAM_GETL(s, link_vrf_id);
db51f0cd 3603 STREAM_GETL(s, mtu);
62b4b7e4 3604
b716ab61
PG		 3605 ifp_link = if_lookup_by_index(link_idx, link_vrf_id);
3606 if (!ifp_link || !ifp) {
3607 zlog_warn("GRE (index %u, VRF %u) or GRE link interface (index %u, VRF %u) not found, when setting GRE params",
3608 idx, vrf_id, link_idx, link_vrf_id);
3609 return;
3610 }
62b4b7e4
PG		 3611
3612 if (!IS_ZEBRA_IF_GRE(ifp))
3613 return;
3614
3615 gre_zif = (struct zebra_if *)ifp->info;
3616 zif = (struct zebra_if *)ifp_link->info;
3617 if (!zif || !gre_zif)
3618 return;
3619
3620 gre_info = &zif->l2info.gre;
3621 if (!gre_info)
3622 return;
3623
db51f0cd
PG		 3624 if (!mtu)
3625 mtu = ifp->mtu;
3626
3627 /* if gre link already set or mtu did not change, do not set it */
3628 if (gre_zif->link && gre_zif->link == ifp_link && mtu == ifp->mtu)
62b4b7e4
PG		 3629 return;
3630
e3d3fa06 3631 dplane_gre_set(ifp, ifp_link, mtu, gre_info);
b716ab61
PG		 3632
3633 stream_failure:
3634 return;
3635}
3636
9ab0b2a3
SW		 3637static void zsend_error_msg(struct zserv *client, enum zebra_error_types error,
3638 struct zmsghdr *bad_hdr)
3639{
3640
3641 struct stream *s = stream_new(ZEBRA_MAX_PACKET_SIZ);
3642
3643 zclient_create_header(s, ZEBRA_ERROR, bad_hdr->vrf_id);
3644
3645 zserv_encode_error(s, error);
3646
3647 client->error_cnt++;
3648 zserv_send_message(client, s);
3649}
3650
3651static void zserv_error_no_vrf(ZAPI_HANDLER_ARGS)
3652{
3653 if (IS_ZEBRA_DEBUG_PACKET && IS_ZEBRA_DEBUG_RECV)
3654 zlog_debug("ZAPI message specifies unknown VRF: %d",
3655 hdr->vrf_id);
3656
5ee080f0 3657 zsend_error_msg(client, ZEBRA_NO_VRF, hdr);
9ab0b2a3
SW		 3658}
3659
3660static void zserv_error_invalid_msg_type(ZAPI_HANDLER_ARGS)
3661{
3662 zlog_info("Zebra received unknown command %d", hdr->command);
3663
5ee080f0 3664 zsend_error_msg(client, ZEBRA_INVALID_MSG_TYPE, hdr);
9ab0b2a3
SW		 3665}
3666
2b64873d 3667void (*const zserv_handlers[])(ZAPI_HANDLER_ARGS) = {
bf094f69
QY		 3668 [ZEBRA_ROUTER_ID_ADD] = zread_router_id_add,
3669 [ZEBRA_ROUTER_ID_DELETE] = zread_router_id_delete,
3670 [ZEBRA_INTERFACE_ADD] = zread_interface_add,
3671 [ZEBRA_INTERFACE_DELETE] = zread_interface_delete,
c3bd894e 3672 [ZEBRA_INTERFACE_SET_PROTODOWN] = zread_interface_set_protodown,
bf094f69
QY		 3673 [ZEBRA_ROUTE_ADD] = zread_route_add,
3674 [ZEBRA_ROUTE_DELETE] = zread_route_del,
bf094f69
QY		 3675 [ZEBRA_REDISTRIBUTE_ADD] = zebra_redistribute_add,
3676 [ZEBRA_REDISTRIBUTE_DELETE] = zebra_redistribute_delete,
3677 [ZEBRA_REDISTRIBUTE_DEFAULT_ADD] = zebra_redistribute_default_add,
3678 [ZEBRA_REDISTRIBUTE_DEFAULT_DELETE] = zebra_redistribute_default_delete,
3679 [ZEBRA_IPV4_NEXTHOP_LOOKUP_MRIB] = zread_ipv4_nexthop_lookup_mrib,
3680 [ZEBRA_HELLO] = zread_hello,
3681 [ZEBRA_NEXTHOP_REGISTER] = zread_rnh_register,
3682 [ZEBRA_NEXTHOP_UNREGISTER] = zread_rnh_unregister,
bf094f69
QY		 3683 [ZEBRA_BFD_DEST_UPDATE] = zebra_ptm_bfd_dst_register,
3684 [ZEBRA_BFD_DEST_REGISTER] = zebra_ptm_bfd_dst_register,
3685 [ZEBRA_BFD_DEST_DEREGISTER] = zebra_ptm_bfd_dst_deregister,
d3af6147
RZ		 3686#if HAVE_BFDD > 0
3687 [ZEBRA_BFD_DEST_REPLAY] = zebra_ptm_bfd_dst_replay,
3688#endif /* HAVE_BFDD */
bf094f69
QY		 3689 [ZEBRA_VRF_UNREGISTER] = zread_vrf_unregister,
3690 [ZEBRA_VRF_LABEL] = zread_vrf_label,
3691 [ZEBRA_BFD_CLIENT_REGISTER] = zebra_ptm_bfd_client_register,
bf094f69
QY		 3692 [ZEBRA_INTERFACE_ENABLE_RADV] = zebra_interface_radv_enable,
3693 [ZEBRA_INTERFACE_DISABLE_RADV] = zebra_interface_radv_disable,
31f937fb
SM		 3694 [ZEBRA_SR_POLICY_SET] = zread_sr_policy_set,
3695 [ZEBRA_SR_POLICY_DELETE] = zread_sr_policy_delete,
ea6b290b
RW		 3696 [ZEBRA_MPLS_LABELS_ADD] = zread_mpls_labels_add,
3697 [ZEBRA_MPLS_LABELS_DELETE] = zread_mpls_labels_delete,
3698 [ZEBRA_MPLS_LABELS_REPLACE] = zread_mpls_labels_replace,
bf094f69
QY		 3699 [ZEBRA_IPMR_ROUTE_STATS] = zebra_ipmr_route_stats,
3700 [ZEBRA_LABEL_MANAGER_CONNECT] = zread_label_manager_request,
f533be73 3701 [ZEBRA_LABEL_MANAGER_CONNECT_ASYNC] = zread_label_manager_request,
bf094f69
QY		 3702 [ZEBRA_GET_LABEL_CHUNK] = zread_label_manager_request,
3703 [ZEBRA_RELEASE_LABEL_CHUNK] = zread_label_manager_request,
3704 [ZEBRA_FEC_REGISTER] = zread_fec_register,
3705 [ZEBRA_FEC_UNREGISTER] = zread_fec_unregister,
3706 [ZEBRA_ADVERTISE_DEFAULT_GW] = zebra_vxlan_advertise_gw_macip,
278e26de 3707 [ZEBRA_ADVERTISE_SVI_MACIP] = zebra_vxlan_advertise_svi_macip,
bf094f69
QY		 3708 [ZEBRA_ADVERTISE_SUBNET] = zebra_vxlan_advertise_subnet,
3709 [ZEBRA_ADVERTISE_ALL_VNI] = zebra_vxlan_advertise_all_vni,
ce5160c0
AK		 3710 [ZEBRA_REMOTE_ES_VTEP_ADD] = zebra_evpn_proc_remote_es,
3711 [ZEBRA_REMOTE_ES_VTEP_DEL] = zebra_evpn_proc_remote_es,
7e5b0b2b
MS		 3712 [ZEBRA_REMOTE_VTEP_ADD] = zebra_vxlan_remote_vtep_add_zapi,
3713 [ZEBRA_REMOTE_VTEP_DEL] = zebra_vxlan_remote_vtep_del_zapi,
bf094f69
QY		 3714 [ZEBRA_REMOTE_MACIP_ADD] = zebra_vxlan_remote_macip_add,
3715 [ZEBRA_REMOTE_MACIP_DEL] = zebra_vxlan_remote_macip_del,
3950b52c 3716 [ZEBRA_DUPLICATE_ADDR_DETECTION] = zebra_vxlan_dup_addr_detection,
bf094f69
QY		 3717 [ZEBRA_INTERFACE_SET_MASTER] = zread_interface_set_master,
3718 [ZEBRA_PW_ADD] = zread_pseudowire,
3719 [ZEBRA_PW_DELETE] = zread_pseudowire,
3720 [ZEBRA_PW_SET] = zread_pseudowire,
3721 [ZEBRA_PW_UNSET] = zread_pseudowire,
3722 [ZEBRA_RULE_ADD] = zread_rule,
3723 [ZEBRA_RULE_DELETE] = zread_rule,
3724 [ZEBRA_TABLE_MANAGER_CONNECT] = zread_table_manager_request,
3725 [ZEBRA_GET_TABLE_CHUNK] = zread_table_manager_request,
3726 [ZEBRA_RELEASE_TABLE_CHUNK] = zread_table_manager_request,
3727 [ZEBRA_IPSET_CREATE] = zread_ipset,
3728 [ZEBRA_IPSET_DESTROY] = zread_ipset,
3729 [ZEBRA_IPSET_ENTRY_ADD] = zread_ipset_entry,
3730 [ZEBRA_IPSET_ENTRY_DELETE] = zread_ipset_entry,
3731 [ZEBRA_IPTABLE_ADD] = zread_iptable,
3732 [ZEBRA_IPTABLE_DELETE] = zread_iptable,
fbac9605 3733 [ZEBRA_VXLAN_FLOOD_CONTROL] = zebra_vxlan_flood_control,
ecbbc3a7 3734 [ZEBRA_VXLAN_SG_REPLAY] = zebra_vxlan_sg_replay,
ee235396
SK		 3735 [ZEBRA_MLAG_CLIENT_REGISTER] = zebra_mlag_client_register,
3736 [ZEBRA_MLAG_CLIENT_UNREGISTER] = zebra_mlag_client_unregister,
3737 [ZEBRA_MLAG_FORWARD_MSG] = zebra_mlag_forward_client_msg,
6e68a084
HS		 3738 [ZEBRA_SRV6_MANAGER_GET_LOCATOR_CHUNK] = zread_srv6_manager_request,
3739 [ZEBRA_SRV6_MANAGER_RELEASE_LOCATOR_CHUNK] = zread_srv6_manager_request,
d68e74b4 3740 [ZEBRA_CLIENT_CAPABILITIES] = zread_client_capabilities,
2f35a820 3741 [ZEBRA_NEIGH_DISCOVER] = zread_neigh_discover,
8b2d3a0f 3742 [ZEBRA_NHG_ADD] = zread_nhg_add,
2f35a820 3743 [ZEBRA_NHG_DEL] = zread_nhg_del,
77b38a4a 3744 [ZEBRA_ROUTE_NOTIFY_REQUEST] = zread_route_notify_request,
7bfa7d02
AK		 3745 [ZEBRA_EVPN_REMOTE_NH_ADD] = zebra_evpn_proc_remote_nh,
3746 [ZEBRA_EVPN_REMOTE_NH_DEL] = zebra_evpn_proc_remote_nh,
d603c077
PG		 3747 [ZEBRA_NEIGH_IP_ADD] = zebra_neigh_ip_add,
3748 [ZEBRA_NEIGH_IP_DEL] = zebra_neigh_ip_del,
7723e8d3
PG		 3749 [ZEBRA_NHRP_NEIGH_REGISTER] = zebra_neigh_register,
3750 [ZEBRA_NHRP_NEIGH_UNREGISTER] = zebra_neigh_unregister,
541025d6 3751 [ZEBRA_CONFIGURE_ARP] = zebra_configure_arp,
d17af8dd 3752 [ZEBRA_GRE_GET] = zebra_gre_get,
b716ab61 3753 [ZEBRA_GRE_SOURCE_SET] = zebra_gre_source_set,
2f35a820 3754};
bf094f69 3755
79b3664a
MS		 3756/*
3757 * Process a batch of zapi messages.
3758 */
3759void zserv_handle_commands(struct zserv *client, struct stream_fifo *fifo)
bf094f69 3760{
904e0d88
QY		 3761 struct zmsghdr hdr;
3762 struct zebra_vrf *zvrf;
79b3664a
MS		 3763 struct stream *msg;
3764 struct stream_fifo temp_fifo;
904e0d88 3765
79b3664a 3766 stream_fifo_init(&temp_fifo);
aa8cb964 3767
79b3664a
MS		 3768 while (stream_fifo_head(fifo)) {
3769 msg = stream_fifo_pop(fifo);
bf094f69 3770
79b3664a
MS		 3771 if (STREAM_READABLE(msg) > ZEBRA_MAX_PACKET_SIZ) {
3772 if (IS_ZEBRA_DEBUG_PACKET && IS_ZEBRA_DEBUG_RECV)
3773 zlog_debug(
3774 "ZAPI message is %zu bytes long but the maximum packet size is %u; dropping",
3775 STREAM_READABLE(msg),
3776 ZEBRA_MAX_PACKET_SIZ);
3777 goto continue_loop;
3778 }
3779
3780 zapi_parse_header(msg, &hdr);
3781
ec64a77b
DS		 3782 if (IS_ZEBRA_DEBUG_PACKET && IS_ZEBRA_DEBUG_RECV
3783 && IS_ZEBRA_DEBUG_DETAIL)
79b3664a 3784 zserv_log_message(NULL, msg, &hdr);
49b3b01f 3785
79b3664a 3786 hdr.length -= ZEBRA_HEADER_SIZE;
904e0d88 3787
79b3664a
MS		 3788 /* Before checking for a handler function, check for
3789 * special messages that are handled in another module;
3790 * we'll treat these as opaque.
3791 */
3792 if (zebra_opaque_handles_msgid(hdr.command)) {
3793 /* Reset message buffer */
3794 stream_set_getp(msg, 0);
3795
3796 stream_fifo_push(&temp_fifo, msg);
3797
3798 /* Continue without freeing the message */
3799 msg = NULL;
3800 goto continue_loop;
3801 }
3802
3803 /* lookup vrf */
3804 zvrf = zebra_vrf_lookup_by_id(hdr.vrf_id);
3805 if (!zvrf) {
3806 zserv_error_no_vrf(client, &hdr, msg, zvrf);
3807 goto continue_loop;
3808 }
3809
3810 if (hdr.command >= array_size(zserv_handlers)
3811 || zserv_handlers[hdr.command] == NULL) {
3812 zserv_error_invalid_msg_type(client, &hdr, msg, zvrf);
3813 goto continue_loop;
3814 }
3815
3816 zserv_handlers[hdr.command](client, &hdr, msg, zvrf);
3817
3818continue_loop:
3819 stream_free(msg);
3820 }
904e0d88 3821
79b3664a
MS		 3822 /* Dispatch any special messages from the temp fifo */
3823 if (stream_fifo_head(&temp_fifo) != NULL)
3824 zebra_opaque_enqueue_batch(&temp_fifo);
9ab0b2a3 3825
79b3664a 3826 stream_fifo_deinit(&temp_fifo);
bf094f69 3827}
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