]> git.proxmox.com Git - mirror_frr.git/blame - zebra/zapi_msg.c
projects / mirror_frr.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
zebra: Attempt to clarify variable names as they are used
[mirror_frr.git] / zebra / zapi_msg.c
CommitLineData
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
bf094f69
QY		 1167/* Nexthop register */
1168static void zread_rnh_register(ZAPI_HANDLER_ARGS)
1169{
1170 struct rnh *rnh;
1171 struct stream *s;
1172 struct prefix p;
1173 unsigned short l = 0;
6cd9a93d 1174 uint8_t connected = 0;
ed6cec97 1175 uint8_t resolve_via_default;
1d30d1f4 1176 bool exist;
906b54dd
DS		 1177 bool flag_changed = false;
1178 uint8_t orig_flags;
bf094f69
QY		 1179
1180 if (IS_ZEBRA_DEBUG_NHT)
1181 zlog_debug(
6071e5e9 1182 "rnh_register msg from client %s: hdr->length=%d vrf=%u",
bf094f69 1183 zebra_route_string(client->proto), hdr->length,
bf094f69
QY		 1184 zvrf->vrf->vrf_id);
1185
1186 s = msg;
1187
469d6277
DS		 1188 if (!client->nh_reg_time)
1189 client->nh_reg_time = monotime(NULL);
bf094f69
QY		 1190
1191 while (l < hdr->length) {
6cd9a93d 1192 STREAM_GETC(s, connected);
ed6cec97 1193 STREAM_GETC(s, resolve_via_default);
bf094f69
QY		 1194 STREAM_GETW(s, p.family);
1195 STREAM_GETC(s, p.prefixlen);
ed6cec97 1196 l += 5;
bf094f69 1197 if (p.family == AF_INET) {
ab5990d8 1198 client->v4_nh_watch_add_cnt++;
bf094f69 1199 if (p.prefixlen > IPV4_MAX_BITLEN) {
9df414fe 1200 zlog_debug(
bf094f69 1201 "%s: Specified prefix hdr->length %d is too large for a v4 address",
15569c58 1202 __func__, p.prefixlen);
bf094f69
QY		 1203 return;
1204 }
1205 STREAM_GET(&p.u.prefix4.s_addr, s, IPV4_MAX_BYTELEN);
1206 l += IPV4_MAX_BYTELEN;
1207 } else if (p.family == AF_INET6) {
ab5990d8 1208 client->v6_nh_watch_add_cnt++;
bf094f69 1209 if (p.prefixlen > IPV6_MAX_BITLEN) {
9df414fe 1210 zlog_debug(
bf094f69 1211 "%s: Specified prefix hdr->length %d is to large for a v6 address",
15569c58 1212 __func__, p.prefixlen);
bf094f69
QY		 1213 return;
1214 }
1215 STREAM_GET(&p.u.prefix6, s, IPV6_MAX_BYTELEN);
1216 l += IPV6_MAX_BYTELEN;
1217 } else {
af4c2728 1218 flog_err(
e914ccbe 1219 EC_ZEBRA_UNKNOWN_FAMILY,
1d5453d6 1220 "rnh_register: Received unknown family type %d",
bf094f69
QY		 1221 p.family);
1222 return;
1223 }
6071e5e9 1224 rnh = zebra_add_rnh(&p, zvrf_id(zvrf), &exist);
1d30d1f4
DS		 1225 if (!rnh)
1226 return;
1227
906b54dd 1228 orig_flags = rnh->flags;
6cd9a93d 1229 if (connected && !CHECK_FLAG(rnh->flags, ZEBRA_NHT_CONNECTED))
6071e5e9 1230 SET_FLAG(rnh->flags, ZEBRA_NHT_CONNECTED);
6cd9a93d
DS		 1231 else if (!connected
1232 && CHECK_FLAG(rnh->flags, ZEBRA_NHT_CONNECTED))
6071e5e9 1233 UNSET_FLAG(rnh->flags, ZEBRA_NHT_CONNECTED);
bf094f69 1234
ed6cec97
DS		 1235 if (resolve_via_default)
1236 SET_FLAG(rnh->flags, ZEBRA_NHT_RESOLVE_VIA_DEFAULT);
1237
906b54dd
DS		 1238 if (orig_flags != rnh->flags)
1239 flag_changed = true;
1240
bf094f69 1241 /* Anything not AF_INET/INET6 has been filtered out above */
906b54dd 1242 if (!exist || flag_changed)
6071e5e9 1243 zebra_evaluate_rnh(zvrf, family2afi(p.family), 1, &p);
dd25a6b3 1244
6071e5e9 1245 zebra_add_rnh_client(rnh, client, zvrf_id(zvrf));
bf094f69
QY		 1246 }
1247
1248stream_failure:
1249 return;
1250}
1251
1252/* Nexthop register */
1253static void zread_rnh_unregister(ZAPI_HANDLER_ARGS)
1254{
1255 struct rnh *rnh;
1256 struct stream *s;
1257 struct prefix p;
1258 unsigned short l = 0;
bf094f69
QY		 1259
1260 if (IS_ZEBRA_DEBUG_NHT)
1261 zlog_debug(
63efca0e 1262 "rnh_unregister msg from client %s: hdr->length=%d vrf: %u",
bf094f69
QY		 1263 zebra_route_string(client->proto), hdr->length,
1264 zvrf->vrf->vrf_id);
1265
1266 s = msg;
1267
1268 while (l < hdr->length) {
6cd9a93d 1269 uint8_t ignore;
bf094f69 1270
6cd9a93d
DS		 1271 STREAM_GETC(s, ignore);
1272 if (ignore != 0)
ed6cec97 1273 goto stream_failure;
6cd9a93d
DS		 1274 STREAM_GETC(s, ignore);
1275 if (ignore != 0)
bf094f69
QY		 1276 goto stream_failure;
1277
1278 STREAM_GETW(s, p.family);
1279 STREAM_GETC(s, p.prefixlen);
ed6cec97 1280 l += 5;
bf094f69 1281 if (p.family == AF_INET) {
ab5990d8 1282 client->v4_nh_watch_rem_cnt++;
bf094f69 1283 if (p.prefixlen > IPV4_MAX_BITLEN) {
9df414fe 1284 zlog_debug(
bf094f69 1285 "%s: Specified prefix hdr->length %d is to large for a v4 address",
15569c58 1286 __func__, p.prefixlen);
bf094f69
QY		 1287 return;
1288 }
1289 STREAM_GET(&p.u.prefix4.s_addr, s, IPV4_MAX_BYTELEN);
1290 l += IPV4_MAX_BYTELEN;
1291 } else if (p.family == AF_INET6) {
ab5990d8 1292 client->v6_nh_watch_rem_cnt++;
bf094f69 1293 if (p.prefixlen > IPV6_MAX_BITLEN) {
9df414fe 1294 zlog_debug(
bf094f69 1295 "%s: Specified prefix hdr->length %d is to large for a v6 address",
15569c58 1296 __func__, p.prefixlen);
bf094f69
QY		 1297 return;
1298 }
1299 STREAM_GET(&p.u.prefix6, s, IPV6_MAX_BYTELEN);
1300 l += IPV6_MAX_BYTELEN;
1301 } else {
af4c2728 1302 flog_err(
e914ccbe 1303 EC_ZEBRA_UNKNOWN_FAMILY,
1d5453d6 1304 "rnh_register: Received unknown family type %d",
bf094f69
QY		 1305 p.family);
1306 return;
1307 }
6071e5e9 1308 rnh = zebra_lookup_rnh(&p, zvrf_id(zvrf));
bf094f69
QY		 1309 if (rnh) {
1310 client->nh_dereg_time = monotime(NULL);
6071e5e9 1311 zebra_remove_rnh_client(rnh, client);
bf094f69
QY		 1312 }
1313 }
1314stream_failure:
1315 return;
1316}
1317
1318#define ZEBRA_MIN_FEC_LENGTH 5
1319
1320/* FEC register */
1321static void zread_fec_register(ZAPI_HANDLER_ARGS)
1322{
1323 struct stream *s;
1324 unsigned short l = 0;
1325 struct prefix p;
1326 uint16_t flags;
57592a53 1327 uint32_t label = MPLS_INVALID_LABEL;
bf094f69
QY		 1328 uint32_t label_index = MPLS_INVALID_LABEL_INDEX;
1329
1330 s = msg;
1331 zvrf = vrf_info_lookup(VRF_DEFAULT);
1332 if (!zvrf)
8b1766b1 1333 return;
bf094f69
QY		 1334
1335 /*
1336 * The minimum amount of data that can be sent for one fec
1337 * registration
1338 */
1339 if (hdr->length < ZEBRA_MIN_FEC_LENGTH) {
af4c2728 1340 flog_err(
e914ccbe 1341 EC_ZEBRA_IRDP_LEN_MISMATCH,
bf094f69
QY		 1342 "fec_register: Received a fec register of hdr->length %d, it is of insufficient size to properly decode",
1343 hdr->length);
1344 return;
1345 }
1346
1347 while (l < hdr->length) {
1348 STREAM_GETW(s, flags);
1349 memset(&p, 0, sizeof(p));
1350 STREAM_GETW(s, p.family);
1351 if (p.family != AF_INET && p.family != AF_INET6) {
af4c2728 1352 flog_err(
e914ccbe 1353 EC_ZEBRA_UNKNOWN_FAMILY,
1d5453d6 1354 "fec_register: Received unknown family type %d",
bf094f69
QY		 1355 p.family);
1356 return;
1357 }
1358 STREAM_GETC(s, p.prefixlen);
1359 if ((p.family == AF_INET && p.prefixlen > IPV4_MAX_BITLEN)
1360 || (p.family == AF_INET6
1361 && p.prefixlen > IPV6_MAX_BITLEN)) {
9df414fe 1362 zlog_debug(
bf094f69 1363 "%s: Specified prefix hdr->length: %d is to long for %d",
15569c58 1364 __func__, p.prefixlen, p.family);
bf094f69
QY		 1365 return;
1366 }
1367 l += 5;
1368 STREAM_GET(&p.u.prefix, s, PSIZE(p.prefixlen));
1369 l += PSIZE(p.prefixlen);
57592a53
AD		 1370 if (flags & ZEBRA_FEC_REGISTER_LABEL) {
1371 STREAM_GETL(s, label);
1372 l += 4;
1373 } else if (flags & ZEBRA_FEC_REGISTER_LABEL_INDEX) {
bf094f69
QY		 1374 STREAM_GETL(s, label_index);
1375 l += 4;
57592a53
AD		 1376 }
1377
1378 zebra_mpls_fec_register(zvrf, &p, label, label_index, client);
bf094f69
QY		 1379 }
1380
1381stream_failure:
1382 return;
1383}
1384
1385/* FEC unregister */
1386static void zread_fec_unregister(ZAPI_HANDLER_ARGS)
1387{
1388 struct stream *s;
1389 unsigned short l = 0;
1390 struct prefix p;
1391 uint16_t flags;
1392
1393 s = msg;
1394 zvrf = vrf_info_lookup(VRF_DEFAULT);
1395 if (!zvrf)
8b1766b1 1396 return;
bf094f69
QY		 1397
1398 /*
1399 * The minimum amount of data that can be sent for one
1400 * fec unregistration
1401 */
1402 if (hdr->length < ZEBRA_MIN_FEC_LENGTH) {
af4c2728 1403 flog_err(
e914ccbe 1404 EC_ZEBRA_IRDP_LEN_MISMATCH,
bf094f69
QY		 1405 "fec_unregister: Received a fec unregister of hdr->length %d, it is of insufficient size to properly decode",
1406 hdr->length);
1407 return;
1408 }
1409
1410 while (l < hdr->length) {
1411 STREAM_GETW(s, flags);
1412 if (flags != 0)
1413 goto stream_failure;
1414
1415 memset(&p, 0, sizeof(p));
1416 STREAM_GETW(s, p.family);
1417 if (p.family != AF_INET && p.family != AF_INET6) {
af4c2728 1418 flog_err(
e914ccbe 1419 EC_ZEBRA_UNKNOWN_FAMILY,
1d5453d6 1420 "fec_unregister: Received unknown family type %d",
bf094f69
QY		 1421 p.family);
1422 return;
1423 }
1424 STREAM_GETC(s, p.prefixlen);
1425 if ((p.family == AF_INET && p.prefixlen > IPV4_MAX_BITLEN)
1426 || (p.family == AF_INET6
1427 && p.prefixlen > IPV6_MAX_BITLEN)) {
9df414fe 1428 zlog_debug(
bf094f69 1429 "%s: Received prefix hdr->length %d which is greater than %d can support",
15569c58 1430 __func__, p.prefixlen, p.family);
bf094f69
QY		 1431 return;
1432 }
1433 l += 5;
1434 STREAM_GET(&p.u.prefix, s, PSIZE(p.prefixlen));
1435 l += PSIZE(p.prefixlen);
1436 zebra_mpls_fec_unregister(zvrf, &p, client);
1437 }
1438
1439stream_failure:
1440 return;
1441}
1442
1443
1444/*
1445 * Register zebra server interface information.
1446 * Send current all interface and address information.
1447 */
1448static void zread_interface_add(ZAPI_HANDLER_ARGS)
1449{
1450 struct vrf *vrf;
1451 struct interface *ifp;
1452
9212d1e1 1453 vrf_id_t vrf_id = zvrf_id(zvrf);
1454 if (vrf_id != VRF_DEFAULT && vrf_id != VRF_UNKNOWN) {
1455 FOR_ALL_INTERFACES (zvrf->vrf, ifp) {
1456 /* Skip pseudo interface. */
1457 if (!CHECK_FLAG(ifp->status, ZEBRA_INTERFACE_ACTIVE))
1458 continue;
1459
1460 zsend_interface_add(client, ifp);
1461 zsend_interface_link_params(client, ifp);
1462 zsend_interface_addresses(client, ifp);
1463 }
1464 return;
1465 }
1466
bf094f69
QY		 1467 RB_FOREACH (vrf, vrf_id_head, &vrfs_by_id) {
1468 FOR_ALL_INTERFACES (vrf, ifp) {
1469 /* Skip pseudo interface. */
1470 if (!CHECK_FLAG(ifp->status, ZEBRA_INTERFACE_ACTIVE))
1471 continue;
1472
1473 zsend_interface_add(client, ifp);
27ecbea3 1474 zsend_interface_link_params(client, ifp);
bf094f69
QY		 1475 zsend_interface_addresses(client, ifp);
1476 }
1477 }
1478}
1479
1480/* Unregister zebra server interface information. */
1481static void zread_interface_delete(ZAPI_HANDLER_ARGS)
1482{
bf094f69
QY		 1483}
1484
c3bd894e
QY		 1485/*
1486 * Handle message requesting interface be set up or down.
1487 */
1488static void zread_interface_set_protodown(ZAPI_HANDLER_ARGS)
1489{
1490 ifindex_t ifindex;
1491 struct interface *ifp;
1492 char down;
1493
1494 STREAM_GETL(msg, ifindex);
1495 STREAM_GETC(msg, down);
1496
1497 /* set ifdown */
1498 ifp = if_lookup_by_index_per_ns(zebra_ns_lookup(NS_DEFAULT), ifindex);
c3bd894e 1499
65dc7dd3
QY		 1500 if (ifp) {
1501 zlog_info("Setting interface %s (%u): protodown %s", ifp->name,
1502 ifindex, down ? "on" : "off");
1503 zebra_if_set_protodown(ifp, down);
1504 } else {
1505 zlog_warn(
1506 "Cannot set protodown %s for interface %u; does not exist",
1507 down ? "on" : "off", ifindex);
1508 }
1509
c3bd894e
QY		 1510
1511stream_failure:
1512 return;
1513}
1514
786a9bd9 1515bool zserv_nexthop_num_warn(const char *caller, const struct prefix *p,
bf094f69
QY		 1516 const unsigned int nexthop_num)
1517{
b3f2b590 1518 if (nexthop_num > zrouter.multipath_num) {
bf094f69 1519 char buff[PREFIX2STR_BUFFER];
8b1766b1 1520
e270f004
SW		 1521 if (p)
1522 prefix2str(p, buff, sizeof(buff));
1523
9df414fe 1524 flog_warn(
e914ccbe 1525 EC_ZEBRA_MORE_NH_THAN_MULTIPATH,
bf094f69 1526 "%s: Prefix %s has %d nexthops, but we can only use the first %d",
e270f004
SW		 1527 caller, (p ? buff : "(NULL)"), nexthop_num,
1528 zrouter.multipath_num);
786a9bd9 1529 return true;
bf094f69 1530 }
786a9bd9
DS		 1531
1532 return false;
bf094f69
QY		 1533}
1534
62e46303
MS		 1535/*
1536 * Create a new nexthop based on a zapi nexthop.
1537 */
2f35a820
DS		 1538static struct nexthop *nexthop_from_zapi(const struct zapi_nexthop *api_nh,
1539 uint32_t flags, struct prefix *p,
1540 uint16_t backup_nexthop_num)
62e46303
MS		 1541{
1542 struct nexthop *nexthop = NULL;
1543 struct ipaddr vtep_ip;
1544 struct interface *ifp;
474aebd9 1545 int i;
62e46303
MS		 1546 char nhbuf[INET6_ADDRSTRLEN] = "";
1547
62e46303
MS		 1548 switch (api_nh->type) {
1549 case NEXTHOP_TYPE_IFINDEX:
1550 nexthop = nexthop_from_ifindex(api_nh->ifindex, api_nh->vrf_id);
1551 break;
1552 case NEXTHOP_TYPE_IPV4:
1553 if (IS_ZEBRA_DEBUG_RECV) {
1554 inet_ntop(AF_INET, &api_nh->gate.ipv4, nhbuf,
1555 sizeof(nhbuf));
1556 zlog_debug("%s: nh=%s, vrf_id=%d", __func__,
1557 nhbuf, api_nh->vrf_id);
1558 }
1559 nexthop = nexthop_from_ipv4(&api_nh->gate.ipv4, NULL,
1560 api_nh->vrf_id);
1561 break;
1562 case NEXTHOP_TYPE_IPV4_IFINDEX:
1563 if (IS_ZEBRA_DEBUG_RECV) {
1564 inet_ntop(AF_INET, &api_nh->gate.ipv4, nhbuf,
1565 sizeof(nhbuf));
1566 zlog_debug("%s: nh=%s, vrf_id=%d, ifindex=%d",
1567 __func__, nhbuf, api_nh->vrf_id,
1568 api_nh->ifindex);
1569 }
1570
1571 nexthop = nexthop_from_ipv4_ifindex(
1572 &api_nh->gate.ipv4, NULL, api_nh->ifindex,
1573 api_nh->vrf_id);
1574
62e46303
MS		 1575 /* Special handling for IPv4 routes sourced from EVPN:
1576 * the nexthop and associated MAC need to be installed.
1577 */
2f35a820 1578 if (CHECK_FLAG(flags, ZEBRA_FLAG_EVPN_ROUTE)) {
62e46303
MS		 1579 memset(&vtep_ip, 0, sizeof(struct ipaddr));
1580 vtep_ip.ipa_type = IPADDR_V4;
1581 memcpy(&(vtep_ip.ipaddr_v4), &(api_nh->gate.ipv4),
1582 sizeof(struct in_addr));
1583 zebra_vxlan_evpn_vrf_route_add(
ff9aca4f 1584 api_nh->vrf_id, &api_nh->rmac, &vtep_ip, p);
62e46303
MS		 1585 }
1586 break;
1587 case NEXTHOP_TYPE_IPV6:
1588 if (IS_ZEBRA_DEBUG_RECV) {
1589 inet_ntop(AF_INET6, &api_nh->gate.ipv6, nhbuf,
1590 sizeof(nhbuf));
1591 zlog_debug("%s: nh=%s, vrf_id=%d", __func__,
1592 nhbuf, api_nh->vrf_id);
1593 }
1594 nexthop = nexthop_from_ipv6(&api_nh->gate.ipv6, api_nh->vrf_id);
1595 break;
1596 case NEXTHOP_TYPE_IPV6_IFINDEX:
1597 if (IS_ZEBRA_DEBUG_RECV) {
1598 inet_ntop(AF_INET6, &api_nh->gate.ipv6, nhbuf,
1599 sizeof(nhbuf));
1600 zlog_debug("%s: nh=%s, vrf_id=%d, ifindex=%d",
1601 __func__, nhbuf, api_nh->vrf_id,
1602 api_nh->ifindex);
1603 }
1604 nexthop = nexthop_from_ipv6_ifindex(&api_nh->gate.ipv6,
1605 api_nh->ifindex,
1606 api_nh->vrf_id);
1607
1608 /* Special handling for IPv6 routes sourced from EVPN:
1609 * the nexthop and associated MAC need to be installed.
1610 */
2f35a820 1611 if (CHECK_FLAG(flags, ZEBRA_FLAG_EVPN_ROUTE)) {
62e46303
MS		 1612 memset(&vtep_ip, 0, sizeof(struct ipaddr));
1613 vtep_ip.ipa_type = IPADDR_V6;
1614 memcpy(&vtep_ip.ipaddr_v6, &(api_nh->gate.ipv6),
1615 sizeof(struct in6_addr));
1616 zebra_vxlan_evpn_vrf_route_add(
ff9aca4f 1617 api_nh->vrf_id, &api_nh->rmac, &vtep_ip, p);
62e46303
MS		 1618 }
1619 break;
1620 case NEXTHOP_TYPE_BLACKHOLE:
1621 if (IS_ZEBRA_DEBUG_RECV)
1622 zlog_debug("%s: nh blackhole %d",
1623 __func__, api_nh->bh_type);
1624
0789eb69
KM		 1625 nexthop =
1626 nexthop_from_blackhole(api_nh->bh_type, api_nh->vrf_id);
62e46303
MS		 1627 break;
1628 }
1629
1630 /* Return early if we couldn't process the zapi nexthop */
1631 if (nexthop == NULL) {
1632 goto done;
1633 }
1634
12b4d77b 1635 /* Mark nexthop as onlink either if client has explicitly told us
1636 * to or if the nexthop is on an 'unnumbered' interface.
1637 */
62e46303
MS		 1638 if (CHECK_FLAG(api_nh->flags, ZAPI_NEXTHOP_FLAG_ONLINK))
1639 SET_FLAG(nexthop->flags, NEXTHOP_FLAG_ONLINK);
12b4d77b 1640 else if (api_nh->type == NEXTHOP_TYPE_IPV4_IFINDEX) {
1641 ifp = if_lookup_by_index(api_nh->ifindex, api_nh->vrf_id);
1642 if (ifp && connected_is_unnumbered(ifp))
1643 SET_FLAG(nexthop->flags, NEXTHOP_FLAG_ONLINK);
1644 }
62e46303
MS		 1645
1646 if (CHECK_FLAG(api_nh->flags, ZAPI_NEXTHOP_FLAG_WEIGHT))
1647 nexthop->weight = api_nh->weight;
1648
1d48702e 1649 if (CHECK_FLAG(api_nh->flags, ZAPI_NEXTHOP_FLAG_HAS_BACKUP)) {
474aebd9
MS		 1650 /* Validate count */
1651 if (api_nh->backup_num > NEXTHOP_MAX_BACKUPS) {
1d48702e 1652 if (IS_ZEBRA_DEBUG_RECV || IS_ZEBRA_DEBUG_EVENT)
474aebd9
MS		 1653 zlog_debug("%s: invalid backup nh count %d",
1654 __func__, api_nh->backup_num);
1655 nexthop_free(nexthop);
1656 nexthop = NULL;
1657 goto done;
1658 }
1659
1660 /* Copy backup info */
1661 SET_FLAG(nexthop->flags, NEXTHOP_FLAG_HAS_BACKUP);
1662 nexthop->backup_num = api_nh->backup_num;
1663
1664 for (i = 0; i < api_nh->backup_num; i++) {
1665 /* Validate backup index */
2f35a820 1666 if (api_nh->backup_idx[i] < backup_nexthop_num) {
474aebd9
MS		 1667 nexthop->backup_idx[i] = api_nh->backup_idx[i];
1668 } else {
1669 if (IS_ZEBRA_DEBUG_RECV || IS_ZEBRA_DEBUG_EVENT)
1670 zlog_debug("%s: invalid backup nh idx %d",
1671 __func__,
1672 api_nh->backup_idx[i]);
1673 nexthop_free(nexthop);
1674 nexthop = NULL;
1675 goto done;
1676 }
1d48702e
MS		 1677 }
1678 }
474aebd9 1679
62e46303
MS		 1680done:
1681 return nexthop;
1682}
1683
2f35a820
DS		 1684static bool zapi_read_nexthops(struct zserv *client, struct prefix *p,
1685 struct zapi_nexthop *nhops, uint32_t flags,
1686 uint32_t message, uint16_t nexthop_num,
1687 uint16_t backup_nh_num,
f70da2a3
DS		 1688 struct nexthop_group **png,
1689 struct nhg_backup_info **pbnhg)
bf094f69 1690{
0eb97b86 1691 struct nexthop_group *ng = NULL;
1d48702e 1692 struct nhg_backup_info *bnhg = NULL;
2f35a820 1693 uint16_t i;
f70da2a3 1694 struct nexthop *last_nh = NULL;
bf094f69 1695
f70da2a3 1696 assert(!(png && pbnhg));
c2c02b76 1697
2f35a820 1698 if (png)
66c28560 1699 ng = nexthop_group_new();
bf094f69 1700
2f35a820 1701 if (pbnhg && backup_nh_num > 0) {
f70da2a3 1702 if (IS_ZEBRA_DEBUG_RECV)
2f35a820
DS		 1703 zlog_debug("%s: adding %d backup nexthops", __func__,
1704 backup_nh_num);
7fcb24bb 1705
66c28560 1706 bnhg = zebra_nhg_backup_alloc();
62e46303
MS		 1707 }
1708
bf094f69
QY		 1709 /*
1710 * TBD should _all_ of the nexthop add operations use
1711 * api_nh->vrf_id instead of re->vrf_id ? I only changed
1712 * for cases NEXTHOP_TYPE_IPV4 and NEXTHOP_TYPE_IPV6.
1713 */
f70da2a3
DS		 1714 for (i = 0; i < nexthop_num; i++) {
1715 struct nexthop *nexthop;
1716 enum lsp_types_t label_type;
1717 char nhbuf[NEXTHOP_STRLEN];
1718 char labelbuf[MPLS_LABEL_STRLEN];
1719 struct zapi_nexthop *api_nh = &nhops[i];
7fcb24bb 1720
62e46303 1721 /* Convert zapi nexthop */
2f35a820 1722 nexthop = nexthop_from_zapi(api_nh, flags, p, backup_nh_num);
62e46303
MS		 1723 if (!nexthop) {
1724 flog_warn(
1725 EC_ZEBRA_NEXTHOP_CREATION_FAILED,
f70da2a3
DS		 1726 "%s: Nexthops Specified: %u(%u) but we failed to properly create one",
1727 __func__, nexthop_num, i);
1728 if (ng)
1729 nexthop_group_delete(&ng);
1730 if (bnhg)
1731 zebra_nhg_backup_free(&bnhg);
1732 return false;
62e46303 1733 }
7fcb24bb 1734
ff9aca4f
SW		 1735 if (bnhg
1736 && CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_HAS_BACKUP)) {
f70da2a3
DS		 1737 if (IS_ZEBRA_DEBUG_RECV) {
1738 nexthop2str(nexthop, nhbuf, sizeof(nhbuf));
1739 zlog_debug("%s: backup nh %s with BACKUP flag!",
1740 __func__, nhbuf);
1741 }
1742 UNSET_FLAG(nexthop->flags, NEXTHOP_FLAG_HAS_BACKUP);
1743 nexthop->backup_num = 0;
1744 }
1745
2f35a820 1746 if (CHECK_FLAG(message, ZAPI_MESSAGE_SRTE)) {
31f937fb
SM		 1747 SET_FLAG(nexthop->flags, NEXTHOP_FLAG_SRTE);
1748 nexthop->srte_color = api_nh->srte_color;
1749 }
1750
62e46303
MS		 1751 /* MPLS labels for BGP-LU or Segment Routing */
1752 if (CHECK_FLAG(api_nh->flags, ZAPI_NEXTHOP_FLAG_LABEL)
1753 && api_nh->type != NEXTHOP_TYPE_IFINDEX
1754 && api_nh->type != NEXTHOP_TYPE_BLACKHOLE
1755 && api_nh->label_num > 0) {
7fcb24bb 1756
62e46303 1757 label_type = lsp_type_from_re_type(client->proto);
62e46303
MS		 1758 nexthop_add_labels(nexthop, label_type,
1759 api_nh->label_num,
1760 &api_nh->labels[0]);
bf094f69 1761 }
bf094f69 1762
c60c1ade 1763 if (CHECK_FLAG(api_nh->flags, ZAPI_NEXTHOP_FLAG_SEG6LOCAL)
8689b25a
HS		 1764 && api_nh->type != NEXTHOP_TYPE_BLACKHOLE) {
1765 if (IS_ZEBRA_DEBUG_RECV)
1766 zlog_debug("%s: adding seg6local action %s",
1767 __func__,
1768 seg6local_action2str(
1769 api_nh->seg6local_action));
1770
eab0f8f0
HS		 1771 nexthop_add_srv6_seg6local(nexthop,
1772 api_nh->seg6local_action,
1773 &api_nh->seg6local_ctx);
8689b25a
HS		 1774 }
1775
c60c1ade 1776 if (CHECK_FLAG(api_nh->flags, ZAPI_NEXTHOP_FLAG_SEG6)
76fb7ae4
HS		 1777 && api_nh->type != NEXTHOP_TYPE_BLACKHOLE) {
1778 if (IS_ZEBRA_DEBUG_RECV)
1779 zlog_debug("%s: adding seg6", __func__);
1780
eab0f8f0 1781 nexthop_add_srv6_seg6(nexthop, &api_nh->seg6_segs);
76fb7ae4
HS		 1782 }
1783
1d48702e
MS		 1784 if (IS_ZEBRA_DEBUG_RECV) {
1785 labelbuf[0] = '\0';
1786 nhbuf[0] = '\0';
1787
1788 nexthop2str(nexthop, nhbuf, sizeof(nhbuf));
1789
1790 if (nexthop->nh_label &&
1791 nexthop->nh_label->num_labels > 0) {
1792 mpls_label2str(nexthop->nh_label->num_labels,
1793 nexthop->nh_label->label,
1794 labelbuf, sizeof(labelbuf),
1795 false);
1796 }
1797
1798 zlog_debug("%s: nh=%s, vrf_id=%d %s",
1799 __func__, nhbuf, api_nh->vrf_id, labelbuf);
1800 }
1801
66c28560 1802 if (ng) {
f70da2a3 1803 /* Add new nexthop to temporary list. This list is
ff9aca4f
SW		 1804 * canonicalized - sorted - so that it can be hashed
1805 * later in route processing. We expect that the sender
1806 * has sent the list sorted, and the zapi client api
1807 * attempts to enforce that, so this should be
1808 * inexpensive - but it is necessary to support shared
1809 * nexthop-groups.
f70da2a3
DS		 1810 */
1811 nexthop_group_add_sorted(ng, nexthop);
1812 }
1813 if (bnhg) {
ff9aca4f
SW		 1814 /* Note that the order of the backup nexthops is
1815 * significant, so we don't sort this list as we do the
1816 * primary nexthops, we just append.
f70da2a3
DS		 1817 */
1818 if (last_nh)
1819 NEXTHOP_APPEND(last_nh, nexthop);
1820 else
1821 bnhg->nhe->nhg.nexthop = nexthop;
1822
1823 last_nh = nexthop;
1824 }
62e46303
MS		 1825 }
1826
66c28560
SW		 1827
1828 /* succesfully read, set caller pointers now */
1829 if (png)
1830 *png = ng;
1831
1832 if (pbnhg)
1833 *pbnhg = bnhg;
1834
f70da2a3
DS		 1835 return true;
1836}
62e46303 1837
5898ce6f 1838static int zapi_nhg_decode(struct stream *s, int cmd, struct zapi_nhg *api_nhg)
21735352
SW		 1839{
1840 uint16_t i;
1841 struct zapi_nexthop *znh;
1842
1843 STREAM_GETW(s, api_nhg->proto);
1844 STREAM_GETL(s, api_nhg->id);
1845
1846 if (cmd == ZEBRA_NHG_DEL)
1847 goto done;
1848
1849 /* Nexthops */
1850 STREAM_GETW(s, api_nhg->nexthop_num);
1851
1852 if (zserv_nexthop_num_warn(__func__, NULL, api_nhg->nexthop_num))
1853 return -1;
1854
1855 if (api_nhg->nexthop_num <= 0) {
1856 flog_warn(EC_ZEBRA_NEXTHOP_CREATION_FAILED,
1857 "%s: No nexthops sent", __func__);
1858 return -1;
1859 }
1860
1861 for (i = 0; i < api_nhg->nexthop_num; i++) {
1862 znh = &((api_nhg->nexthops)[i]);
1863
1864 if (zapi_nexthop_decode(s, znh, 0, 0) != 0) {
1865 flog_warn(EC_ZEBRA_NEXTHOP_CREATION_FAILED,
1866 "%s: Nexthop creation failed", __func__);
1867 return -1;
1868 }
1869 }
1870
1871 /* Backup Nexthops */
1872 STREAM_GETW(s, api_nhg->backup_nexthop_num);
1873
1874 if (zserv_nexthop_num_warn(__func__, NULL, api_nhg->backup_nexthop_num))
1875 return -1;
1876
1877 for (i = 0; i < api_nhg->backup_nexthop_num; i++) {
1878 znh = &((api_nhg->backup_nexthops)[i]);
1879
1880 if (zapi_nexthop_decode(s, znh, 0, 0) != 0) {
1881 flog_warn(EC_ZEBRA_NEXTHOP_CREATION_FAILED,
1882 "%s: Backup Nexthop creation failed",
1883 __func__);
1884 return -1;
1885 }
1886 }
1887
1888done:
1889 return 0;
1890
1891stream_failure:
1892 flog_warn(
1893 EC_ZEBRA_NEXTHOP_CREATION_FAILED,
1894 "%s: Nexthop Group decode failed with some sort of stream read failure",
1895 __func__);
1896 return -1;
1897}
1898
2f35a820
DS		 1899static void zread_nhg_del(ZAPI_HANDLER_ARGS)
1900{
21735352
SW		 1901 struct stream *s;
1902 struct zapi_nhg api_nhg = {};
0885b1e3 1903 struct nhg_hash_entry *nhe;
2f35a820 1904
21735352
SW		 1905 s = msg;
1906 if (zapi_nhg_decode(s, hdr->command, &api_nhg) < 0) {
1907 if (IS_ZEBRA_DEBUG_RECV)
1908 zlog_debug("%s: Unable to decode zapi_nhg sent",
1909 __func__);
1910 return;
1911 }
2f35a820
DS		 1912
1913 /*
1914 * Delete the received nhg id
2f35a820 1915 */
21735352 1916 nhe = zebra_nhg_proto_del(api_nhg.id, api_nhg.proto);
0885b1e3
SW		 1917
1918 if (nhe) {
6fae63d2 1919 zebra_nhg_decrement_ref(nhe);
ee94437e
MS		 1920 zsend_nhg_notify(api_nhg.proto, client->instance,
1921 client->session_id, api_nhg.id,
1922 ZAPI_NHG_REMOVED);
0885b1e3 1923 } else
ee94437e
MS		 1924 zsend_nhg_notify(api_nhg.proto, client->instance,
1925 client->session_id, api_nhg.id,
1926 ZAPI_NHG_REMOVE_FAIL);
2f35a820
DS		 1927}
1928
8b2d3a0f 1929static void zread_nhg_add(ZAPI_HANDLER_ARGS)
2f35a820
DS		 1930{
1931 struct stream *s;
21735352 1932 struct zapi_nhg api_nhg = {};
2f35a820 1933 struct nexthop_group *nhg = NULL;
21735352 1934 struct nhg_backup_info *bnhg = NULL;
0885b1e3 1935 struct nhg_hash_entry *nhe;
2f35a820 1936
2f35a820 1937 s = msg;
21735352
SW		 1938 if (zapi_nhg_decode(s, hdr->command, &api_nhg) < 0) {
1939 if (IS_ZEBRA_DEBUG_RECV)
1940 zlog_debug("%s: Unable to decode zapi_nhg sent",
1941 __func__);
68671c74
SW		 1942 return;
1943 }
1944
21735352
SW		 1945 if ((!zapi_read_nexthops(client, NULL, api_nhg.nexthops, 0, 0,
1946 api_nhg.nexthop_num,
1947 api_nhg.backup_nexthop_num, &nhg, NULL))
1948 || (!zapi_read_nexthops(client, NULL, api_nhg.backup_nexthops, 0, 0,
1949 api_nhg.backup_nexthop_num,
1950 api_nhg.backup_nexthop_num, NULL, &bnhg))) {
2f35a820 1951
2f35a820 1952 flog_warn(EC_ZEBRA_NEXTHOP_CREATION_FAILED,
ff9aca4f 1953 "%s: Nexthop Group Creation failed", __func__);
fd99142a
MS		 1954
1955 /* Free any local allocations */
1956 nexthop_group_delete(&nhg);
1957 zebra_nhg_backup_free(&bnhg);
1958
2f35a820
DS		 1959 return;
1960 }
0885b1e3 1961
04bec7b2
MS		 1962 /* Create a temporary nhe */
1963 nhe = zebra_nhg_alloc();
1964 nhe->id = api_nhg.id;
1965 nhe->type = api_nhg.proto;
1966 nhe->zapi_instance = client->instance;
1967 nhe->zapi_session = client->session_id;
0885b1e3 1968
04bec7b2
MS		 1969 /* Take over the list(s) of nexthops */
1970 nhe->nhg.nexthop = nhg->nexthop;
1971 nhg->nexthop = NULL;
1972
1973 if (bnhg) {
1974 nhe->backup_info = bnhg;
1975 bnhg = NULL;
1976 }
0885b1e3
SW		 1977
1978 /*
1979 * TODO:
1980 * Assume fully resolved for now and install.
0885b1e3
SW		 1981 * Resolution is going to need some more work.
1982 */
ee94437e 1983
04bec7b2
MS		 1984 /* Enqueue to workqueue for processing */
1985 rib_queue_nhe_add(nhe);
1986
1987 /* Free any local allocations */
1988 nexthop_group_delete(&nhg);
1989 zebra_nhg_backup_free(&bnhg);
1990
2f35a820
DS		 1991}
1992
f70da2a3
DS		 1993static void zread_route_add(ZAPI_HANDLER_ARGS)
1994{
1995 struct stream *s;
1996 struct zapi_route api;
1997 afi_t afi;
1998 struct prefix_ipv6 *src_p = NULL;
1999 struct route_entry *re;
2000 struct nexthop_group *ng = NULL;
2001 struct nhg_backup_info *bnhg = NULL;
2002 int ret;
2003 vrf_id_t vrf_id;
2004 struct nhg_hash_entry nhe;
0eb97b86 2005
f70da2a3
DS		 2006 s = msg;
2007 if (zapi_route_decode(s, &api) < 0) {
2008 if (IS_ZEBRA_DEBUG_RECV)
2009 zlog_debug("%s: Unable to decode zapi_route sent",
2010 __func__);
2011 return;
2012 }
1d48702e 2013
f70da2a3 2014 vrf_id = zvrf_id(zvrf);
31f937fb 2015
2dbe669b
DA		 2016 if (IS_ZEBRA_DEBUG_RECV)
2017 zlog_debug("%s: p=(%u:%u)%pFX, msg flags=0x%x, flags=0x%x",
2018 __func__, vrf_id, api.tableid, &api.prefix,
f70da2a3 2019 (int)api.message, api.flags);
0eb97b86 2020
f70da2a3
DS		 2021 /* Allocate new route. */
2022 re = XCALLOC(MTYPE_RE, sizeof(struct route_entry));
2023 re->type = api.type;
2024 re->instance = api.instance;
2025 re->flags = api.flags;
2026 re->uptime = monotime(NULL);
2027 re->vrf_id = vrf_id;
1d48702e 2028
f70da2a3
DS		 2029 if (api.tableid)
2030 re->table = api.tableid;
2031 else
2032 re->table = zvrf->table_id;
1d48702e 2033
27141ea9
DS		 2034 if (!CHECK_FLAG(api.message, ZAPI_MESSAGE_NHG)
2035 && (!CHECK_FLAG(api.message, ZAPI_MESSAGE_NEXTHOP)
2036 || api.nexthop_num == 0)) {
ff9aca4f
SW		 2037 flog_warn(
2038 EC_ZEBRA_RX_ROUTE_NO_NEXTHOPS,
2039 "%s: received a route without nexthops for prefix %pFX from client %s",
2040 __func__, &api.prefix,
2041 zebra_route_string(client->proto));
1d48702e 2042
f70da2a3
DS		 2043 XFREE(MTYPE_RE, re);
2044 return;
2045 }
1d48702e 2046
f70da2a3 2047 /* Report misuse of the backup flag */
ff9aca4f
SW		 2048 if (CHECK_FLAG(api.message, ZAPI_MESSAGE_BACKUP_NEXTHOPS)
2049 && api.backup_nexthop_num == 0) {
f70da2a3 2050 if (IS_ZEBRA_DEBUG_RECV || IS_ZEBRA_DEBUG_EVENT)
ff9aca4f
SW		 2051 zlog_debug(
2052 "%s: client %s: BACKUP flag set but no backup nexthops, prefix %pFX",
2053 __func__, zebra_route_string(client->proto),
2054 &api.prefix);
f70da2a3 2055 }
62e46303 2056
50db3f2f
SW		 2057 if (CHECK_FLAG(api.message, ZAPI_MESSAGE_NHG))
2058 re->nhe_id = api.nhgid;
2059
2060 if (!re->nhe_id
2b5ecd4c
SW		 2061 && (!zapi_read_nexthops(client, &api.prefix, api.nexthops,
2062 api.flags, api.message, api.nexthop_num,
2063 api.backup_nexthop_num, &ng, NULL)
2064 || !zapi_read_nexthops(client, &api.prefix, api.backup_nexthops,
2065 api.flags, api.message,
2066 api.backup_nexthop_num,
2067 api.backup_nexthop_num, NULL, &bnhg))) {
21735352
SW		 2068
2069 nexthop_group_delete(&ng);
2070 zebra_nhg_backup_free(&bnhg);
f70da2a3
DS		 2071 XFREE(MTYPE_RE, re);
2072 return;
7fcb24bb
RW		 2073 }
2074
bf094f69
QY		 2075 if (CHECK_FLAG(api.message, ZAPI_MESSAGE_DISTANCE))
2076 re->distance = api.distance;
2077 if (CHECK_FLAG(api.message, ZAPI_MESSAGE_METRIC))
2078 re->metric = api.metric;
2079 if (CHECK_FLAG(api.message, ZAPI_MESSAGE_TAG))
2080 re->tag = api.tag;
2081 if (CHECK_FLAG(api.message, ZAPI_MESSAGE_MTU))
2082 re->mtu = api.mtu;
2083
a29a6001
DS		 2084 if (CHECK_FLAG(api.message, ZAPI_MESSAGE_OPAQUE)) {
2085 re->opaque = XMALLOC(MTYPE_OPAQUE,
2086 sizeof(struct opaque) + api.opaque.length);
2087 re->opaque->length = api.opaque.length;
2088 memcpy(re->opaque->data, api.opaque.data, re->opaque->length);
2089 }
2090
bf094f69
QY		 2091 afi = family2afi(api.prefix.family);
2092 if (afi != AFI_IP6 && CHECK_FLAG(api.message, ZAPI_MESSAGE_SRCPFX)) {
e914ccbe 2093 flog_warn(EC_ZEBRA_RX_SRCDEST_WRONG_AFI,
9df414fe 2094 "%s: Received SRC Prefix but afi is not v6",
15569c58 2095 __func__);
0eb97b86 2096 nexthop_group_delete(&ng);
1d48702e 2097 zebra_nhg_backup_free(&bnhg);
bf094f69
QY		 2098 XFREE(MTYPE_RE, re);
2099 return;
2100 }
2101 if (CHECK_FLAG(api.message, ZAPI_MESSAGE_SRCPFX))
2102 src_p = &api.src_prefix;
2103
5e7939a5
DS		 2104 if (api.safi != SAFI_UNICAST && api.safi != SAFI_MULTICAST) {
2105 flog_warn(EC_LIB_ZAPI_MISSMATCH,
2106 "%s: Received safi: %d but we can only accept UNICAST or MULTICAST",
2107 __func__, api.safi);
2108 nexthop_group_delete(&ng);
1d48702e 2109 zebra_nhg_backup_free(&bnhg);
5e7939a5
DS		 2110 XFREE(MTYPE_RE, re);
2111 return;
2112 }
1d48702e 2113
50db3f2f
SW		 2114 /*
2115 * If we have an ID, this proto owns the NHG it sent along with the
2116 * route, so we just send the ID into rib code with it.
2117 *
2118 * Havent figured out how to handle backup NHs with this yet, so lets
2119 * keep that separate.
2120 * Include backup info with the route. We use a temporary nhe here;
377e29f7
MS		 2121 * if this is a new/unknown nhe, a new copy will be allocated
2122 * and stored.
2123 */
50db3f2f
SW		 2124 if (!re->nhe_id) {
2125 zebra_nhe_init(&nhe, afi, ng->nexthop);
2126 nhe.nhg.nexthop = ng->nexthop;
2127 nhe.backup_info = bnhg;
2128 }
1d48702e
MS		 2129 ret = rib_add_multipath_nhe(afi, api.safi, &api.prefix, src_p,
2130 re, &nhe);
bf094f69 2131
f94a7703
DS		 2132 /*
2133 * rib_add_multipath_nhe only fails in a couple spots
2134 * and in those spots we have not freed memory
2135 */
38c764dd
DS		 2136 if (ret == -1) {
2137 client->error_cnt++;
f94a7703 2138 XFREE(MTYPE_RE, re);
38c764dd 2139 }
f94a7703 2140
377e29f7
MS		 2141 /* At this point, these allocations are not needed: 're' has been
2142 * retained or freed, and if 're' still exists, it is using
2143 * a reference to a shared group object.
2144 */
2145 nexthop_group_delete(&ng);
2146 if (bnhg)
2147 zebra_nhg_backup_free(&bnhg);
2148
bf094f69
QY		 2149 /* Stats */
2150 switch (api.prefix.family) {
2151 case AF_INET:
38c764dd 2152 if (ret == 0)
bf094f69 2153 client->v4_route_add_cnt++;
38c764dd 2154 else if (ret == 1)
bf094f69
QY		 2155 client->v4_route_upd8_cnt++;
2156 break;
2157 case AF_INET6:
38c764dd 2158 if (ret == 0)
bf094f69 2159 client->v6_route_add_cnt++;
38c764dd 2160 else if (ret == 1)
bf094f69
QY		 2161 client->v6_route_upd8_cnt++;
2162 break;
2163 }
2164}
2165
224ccf29
DL		 2166void zapi_opaque_free(struct opaque *opaque)
2167{
2168 XFREE(MTYPE_OPAQUE, opaque);
2169}
2170
bf094f69
QY		 2171static void zread_route_del(ZAPI_HANDLER_ARGS)
2172{
2173 struct stream *s;
2174 struct zapi_route api;
2175 afi_t afi;
2176 struct prefix_ipv6 *src_p = NULL;
2177 uint32_t table_id;
2178
2179 s = msg;
2180 if (zapi_route_decode(s, &api) < 0)
2181 return;
2182
2183 afi = family2afi(api.prefix.family);
2184 if (afi != AFI_IP6 && CHECK_FLAG(api.message, ZAPI_MESSAGE_SRCPFX)) {
e914ccbe 2185 flog_warn(EC_ZEBRA_RX_SRCDEST_WRONG_AFI,
9df414fe 2186 "%s: Received a src prefix while afi is not v6",
15569c58 2187 __func__);
bf094f69
QY		 2188 return;
2189 }
2190 if (CHECK_FLAG(api.message, ZAPI_MESSAGE_SRCPFX))
2191 src_p = &api.src_prefix;
2192
60ca3cc2 2193 if (api.tableid)
bf094f69
QY		 2194 table_id = api.tableid;
2195 else
2196 table_id = zvrf->table_id;
2197
2dbe669b
DA		 2198 if (IS_ZEBRA_DEBUG_RECV)
2199 zlog_debug("%s: p=(%u:%u)%pFX, msg flags=0x%x, flags=0x%x",
2200 __func__, zvrf_id(zvrf), table_id, &api.prefix,
c2c02b76 2201 (int)api.message, api.flags);
c2c02b76 2202
bf094f69 2203 rib_delete(afi, api.safi, zvrf_id(zvrf), api.type, api.instance,
bc541126 2204 api.flags, &api.prefix, src_p, NULL, 0, table_id, api.metric,
3ceae22b 2205 api.distance, false);
bf094f69
QY		 2206
2207 /* Stats */
2208 switch (api.prefix.family) {
2209 case AF_INET:
2210 client->v4_route_del_cnt++;
2211 break;
2212 case AF_INET6:
2213 client->v6_route_del_cnt++;
2214 break;
2215 }
2216}
2217
bf094f69
QY		 2218/* MRIB Nexthop lookup for IPv4. */
2219static void zread_ipv4_nexthop_lookup_mrib(ZAPI_HANDLER_ARGS)
2220{
2221 struct in_addr addr;
2222 struct route_entry *re;
2223
2224 STREAM_GET(&addr.s_addr, msg, IPV4_MAX_BYTELEN);
2225 re = rib_match_ipv4_multicast(zvrf_id(zvrf), addr, NULL);
2226 zsend_ipv4_nexthop_lookup_mrib(client, addr, re, zvrf);
2227
2228stream_failure:
2229 return;
2230}
2231
bf094f69
QY		 2232/* Register zebra server router-id information. Send current router-id */
2233static void zread_router_id_add(ZAPI_HANDLER_ARGS)
2234{
98a3fb0a 2235 afi_t afi;
bf094f69 2236 struct prefix p;
01141358 2237 struct prefix zero;
bf094f69 2238
98a3fb0a
SM		 2239 STREAM_GETW(msg, afi);
2240
2241 if (afi <= AFI_UNSPEC || afi >= AFI_MAX) {
2242 zlog_warn(
2243 "Invalid AFI %u while registering for router ID notifications",
2244 afi);
2245 goto stream_failure;
2246 }
2247
bf094f69 2248 /* Router-id information is needed. */
98a3fb0a 2249 vrf_bitmap_set(client->ridinfo[afi], zvrf_id(zvrf));
bf094f69 2250
98a3fb0a 2251 router_id_get(afi, &p, zvrf);
bf094f69 2252
01141358
DS		 2253 /*
2254 * If we have not officially setup a router-id let's not
2255 * tell the upper level protocol about it yet.
2256 */
2257 memset(&zero, 0, sizeof(zero));
2258 if ((p.family == AF_INET && p.u.prefix4.s_addr == INADDR_ANY)
2259 || (p.family == AF_INET6
2260 && memcmp(&p.u.prefix6, &zero.u.prefix6,
2261 sizeof(struct in6_addr))
2262 == 0))
2263 return;
2264
98a3fb0a
SM		 2265 zsend_router_id_update(client, afi, &p, zvrf_id(zvrf));
2266
2267stream_failure:
2268 return;
bf094f69
QY		 2269}
2270
2271/* Unregister zebra server router-id information. */
2272static void zread_router_id_delete(ZAPI_HANDLER_ARGS)
2273{
98a3fb0a
SM		 2274 afi_t afi;
2275
2276 STREAM_GETW(msg, afi);
2277
2278 if (afi <= AFI_UNSPEC || afi >= AFI_MAX) {
2279 zlog_warn(
2280 "Invalid AFI %u while unregistering from router ID notifications",
2281 afi);
2282 goto stream_failure;
2283 }
2284
2285 vrf_bitmap_unset(client->ridinfo[afi], zvrf_id(zvrf));
2286
2287stream_failure:
2288 return;
bf094f69
QY		 2289}
2290
2291static void zsend_capabilities(struct zserv *client, struct zebra_vrf *zvrf)
2292{
2293 struct stream *s = stream_new(ZEBRA_MAX_PACKET_SIZ);
2294
2295 zclient_create_header(s, ZEBRA_CAPABILITIES, zvrf->vrf->vrf_id);
bb6b7f79 2296 stream_putl(s, vrf_get_backend());
bf094f69 2297 stream_putc(s, mpls_enabled);
b3f2b590 2298 stream_putl(s, zrouter.multipath_num);
02c0866d 2299 stream_putc(s, zebra_mlag_get_role());
bf094f69
QY		 2300
2301 stream_putw_at(s, 0, stream_get_endp(s));
21ccc0cf 2302 zserv_send_message(client, s);
bf094f69
QY		 2303}
2304
b120fe3b
DS		 2305void zsend_capabilities_all_clients(void)
2306{
2307 struct listnode *node, *nnode;
2308 struct zebra_vrf *zvrf;
2309 struct zserv *client;
2310
2311 zvrf = vrf_info_lookup(VRF_DEFAULT);
2312 for (ALL_LIST_ELEMENTS(zrouter.client_list, node, nnode, client)) {
17da84a4
KS		 2313 /* Do not send unsolicited messages to synchronous clients. */
2314 if (client->synchronous)
2315 continue;
2316
b120fe3b
DS		 2317 zsend_capabilities(client, zvrf);
2318 }
2319}
2320
bf094f69
QY		 2321/* Tie up route-type and client->sock */
2322static void zread_hello(ZAPI_HANDLER_ARGS)
2323{
2324 /* type of protocol (lib/zebra.h) */
2325 uint8_t proto;
2326 unsigned short instance;
2327 uint8_t notify;
17da84a4 2328 uint8_t synchronous;
4e0b5b31 2329 uint32_t session_id;
bf094f69
QY		 2330
2331 STREAM_GETC(msg, proto);
2332 STREAM_GETW(msg, instance);
4e0b5b31 2333 STREAM_GETL(msg, session_id);
bf094f69 2334 STREAM_GETC(msg, notify);
17da84a4 2335 STREAM_GETC(msg, synchronous);
bf094f69
QY		 2336 if (notify)
2337 client->notify_owner = true;
2338
17da84a4
KS		 2339 if (synchronous)
2340 client->synchronous = true;
2341
bf094f69 2342 /* accept only dynamic routing protocols */
f23cbcda 2343 if ((proto < ZEBRA_ROUTE_MAX) && (proto > ZEBRA_ROUTE_CONNECT)) {
bf094f69
QY		 2344 zlog_notice(
2345 "client %d says hello and bids fair to announce only %s routes vrf=%u",
2346 client->sock, zebra_route_string(proto),
2347 zvrf->vrf->vrf_id);
2348 if (instance)
2349 zlog_notice("client protocol instance %d", instance);
2350
2351 client->proto = proto;
2352 client->instance = instance;
4e0b5b31 2353 client->session_id = session_id;
6f4aee61
S		 2354
2355 /* Graceful restart processing for client connect */
2356 zebra_gr_client_reconnect(client);
bf094f69
QY		 2357 }
2358
17da84a4
KS		 2359 if (!client->synchronous) {
2360 zsend_capabilities(client, zvrf);
2361 zebra_vrf_update_all(client);
2362 }
bf094f69
QY		 2363stream_failure:
2364 return;
2365}
2366
2367/* Unregister all information in a VRF. */
2368static void zread_vrf_unregister(ZAPI_HANDLER_ARGS)
2369{
2370 int i;
2371 afi_t afi;
2372
49db7a7b 2373 for (afi = AFI_IP; afi < AFI_MAX; afi++) {
bf094f69
QY		 2374 for (i = 0; i < ZEBRA_ROUTE_MAX; i++)
2375 vrf_bitmap_unset(client->redist[afi][i], zvrf_id(zvrf));
49db7a7b 2376 vrf_bitmap_unset(client->redist_default[afi], zvrf_id(zvrf));
98a3fb0a 2377 vrf_bitmap_unset(client->ridinfo[afi], zvrf_id(zvrf));
7723e8d3 2378 vrf_bitmap_unset(client->nhrp_neighinfo[afi], zvrf_id(zvrf));
49db7a7b 2379 }
bf094f69
QY		 2380}
2381
ff8d3c2d
MS		 2382/*
2383 * Validate incoming zapi mpls lsp / labels message
2384 */
2385static int zapi_labels_validate(const struct zapi_labels *zl)
2386{
2387 int ret = -1;
2388 int i, j, idx;
2389 uint32_t bits[8];
2390 uint32_t ival;
2391 const struct zapi_nexthop *znh;
2392
2393 /* Validate backup info: no duplicates for a single primary */
2394 if (zl->backup_nexthop_num == 0) {
2395 ret = 0;
2396 goto done;
2397 }
2398
2399 for (j = 0; j < zl->nexthop_num; j++) {
2400 znh = &zl->nexthops[j];
2401
2402 memset(bits, 0, sizeof(bits));
2403
2404 for (i = 0; i < znh->backup_num; i++) {
2405 idx = znh->backup_idx[i] / 32;
2406
2407 ival = 1 << znh->backup_idx[i] % 32;
2408
2409 /* Check whether value is already used */
2410 if (ival & bits[idx]) {
2411 /* Fail */
2412
2413 if (IS_ZEBRA_DEBUG_RECV)
2414 zlog_debug("%s: invalid zapi mpls message: duplicate backup nexthop index %d",
2415 __func__,
2416 znh->backup_idx[i]);
2417 goto done;
2418 }
2419
2420 /* Mark index value */
2421 bits[idx] |= ival;
2422 }
2423 }
2424
2425 ret = 0;
2426
2427done:
2428
2429 return ret;
2430}
2431
ea6b290b
RW		 2432/*
2433 * Handle request to create an MPLS LSP.
2434 *
2435 * A single message can fully specify an LSP with multiple nexthops.
2436 *
2437 * When the optional ZAPI_LABELS_FTN flag is set, the specified FEC (route) is
2438 * updated to use the received label(s).
2439 */
2440static void zread_mpls_labels_add(ZAPI_HANDLER_ARGS)
bf094f69
QY		 2441{
2442 struct stream *s;
bad6b0e7 2443 struct zapi_labels zl;
f2e7f4eb 2444 int ret;
bf094f69
QY		 2445
2446 /* Get input stream. */
2447 s = msg;
bad6b0e7
RW		 2448 if (zapi_labels_decode(s, &zl) < 0) {
2449 if (IS_ZEBRA_DEBUG_RECV)
2450 zlog_debug("%s: Unable to decode zapi_labels sent",
15569c58 2451 __func__);
bf094f69
QY		 2452 return;
2453 }
bf094f69 2454
bf094f69
QY		 2455 if (!mpls_enabled)
2456 return;
2457
ff8d3c2d
MS		 2458 /* Validate; will debug on failure */
2459 if (zapi_labels_validate(&zl) < 0)
2460 return;
2461
f2e7f4eb
MS		 2462 ret = mpls_zapi_labels_process(true, zvrf, &zl);
2463 if (ret < 0) {
2464 if (IS_ZEBRA_DEBUG_RECV)
2465 zlog_debug("%s: Error processing zapi request",
2466 __func__);
ea6b290b
RW		 2467 }
2468}
2469
2470/*
2471 * Handle request to delete an MPLS LSP.
2472 *
2473 * An LSP is identified by its type and local label. When the received message
2474 * doesn't contain any nexthop, the whole LSP is deleted. Otherwise, only the
2475 * listed LSP nexthops (aka NHLFEs) are deleted.
2476 *
2477 * When the optional ZAPI_LABELS_FTN flag is set, the labels of the specified
2478 * FEC (route) nexthops are deleted.
2479 */
2480static void zread_mpls_labels_delete(ZAPI_HANDLER_ARGS)
2481{
2482 struct stream *s;
2483 struct zapi_labels zl;
f2e7f4eb 2484 int ret;
ea6b290b
RW		 2485
2486 /* Get input stream. */
2487 s = msg;
2488 if (zapi_labels_decode(s, &zl) < 0) {
2489 if (IS_ZEBRA_DEBUG_RECV)
2490 zlog_debug("%s: Unable to decode zapi_labels sent",
15569c58 2491 __func__);
ea6b290b
RW		 2492 return;
2493 }
2494
2495 if (!mpls_enabled)
2496 return;
2497
2498 if (zl.nexthop_num > 0) {
f2e7f4eb
MS		 2499 ret = mpls_zapi_labels_process(false /*delete*/, zvrf, &zl);
2500 if (ret < 0) {
2501 if (IS_ZEBRA_DEBUG_RECV)
2502 zlog_debug("%s: Error processing zapi request",
2503 __func__);
ea6b290b
RW		 2504 }
2505 } else {
2506 mpls_lsp_uninstall_all_vrf(zvrf, zl.type, zl.local_label);
2507
b3c49d0e 2508 if (CHECK_FLAG(zl.message, ZAPI_LABELS_FTN))
ea6b290b
RW		 2509 mpls_ftn_uninstall(zvrf, zl.type, &zl.route.prefix,
2510 zl.route.type, zl.route.instance);
2511 }
2512}
2513
2514/*
2515 * Handle request to add an MPLS LSP or change an existing one.
2516 *
2517 * A single message can fully specify an LSP with multiple nexthops.
2518 *
2519 * When the optional ZAPI_LABELS_FTN flag is set, the specified FEC (route) is
2520 * updated to use the received label(s).
2521 *
2522 * NOTE: zebra will use route replace semantics (make-before-break) to update
2523 * the LSP in the forwarding plane if that's supported by the underlying
2524 * platform.
2525 */
2526static void zread_mpls_labels_replace(ZAPI_HANDLER_ARGS)
2527{
2528 struct stream *s;
2529 struct zapi_labels zl;
2530
2531 /* Get input stream. */
2532 s = msg;
2533 if (zapi_labels_decode(s, &zl) < 0) {
2534 if (IS_ZEBRA_DEBUG_RECV)
2535 zlog_debug("%s: Unable to decode zapi_labels sent",
15569c58 2536 __func__);
ea6b290b
RW		 2537 return;
2538 }
2539
2540 if (!mpls_enabled)
2541 return;
2542
ff8d3c2d
MS		 2543 /* Validate; will debug on failure */
2544 if (zapi_labels_validate(&zl) < 0)
2545 return;
2546
f2e7f4eb
MS		 2547 /* This removes everything, then re-adds from the client's
2548 * zapi message. Since the LSP will be processed later, on this
2549 * this same pthread, all of the changes will 'appear' at once.
2550 */
ea6b290b
RW		 2551 mpls_lsp_uninstall_all_vrf(zvrf, zl.type, zl.local_label);
2552 if (CHECK_FLAG(zl.message, ZAPI_LABELS_FTN))
2553 mpls_ftn_uninstall(zvrf, zl.type, &zl.route.prefix,
2554 zl.route.type, zl.route.instance);
2555
f2e7f4eb 2556 mpls_zapi_labels_process(true, zvrf, &zl);
bf094f69
QY		 2557}
2558
31f937fb
SM		 2559static void zread_sr_policy_set(ZAPI_HANDLER_ARGS)
2560{
2561 struct stream *s;
2562 struct zapi_sr_policy zp;
2563 struct zapi_srte_tunnel *zt;
2564 struct zebra_sr_policy *policy;
2565
2566 /* Get input stream. */
2567 s = msg;
2568 if (zapi_sr_policy_decode(s, &zp) < 0) {
2569 if (IS_ZEBRA_DEBUG_RECV)
2570 zlog_debug("%s: Unable to decode zapi_sr_policy sent",
7d7be47e 2571 __func__);
31f937fb
SM		 2572 return;
2573 }
2574 zt = &zp.segment_list;
2575 if (zt->label_num < 1) {
2576 if (IS_ZEBRA_DEBUG_RECV)
2577 zlog_debug(
2578 "%s: SR-TE tunnel must contain at least one label",
7d7be47e 2579 __func__);
31f937fb
SM		 2580 return;
2581 }
2582
2583 if (!mpls_enabled)
2584 return;
2585
2586 policy = zebra_sr_policy_find(zp.color, &zp.endpoint);
2587 if (!policy)
2588 policy = zebra_sr_policy_add(zp.color, &zp.endpoint, zp.name);
2589 /* TODO: per-VRF list of SR-TE policies. */
2590 policy->zvrf = zvrf;
2591
2592 zebra_sr_policy_validate(policy, &zp.segment_list);
2593}
2594
2595static void zread_sr_policy_delete(ZAPI_HANDLER_ARGS)
2596{
2597 struct stream *s;
2598 struct zapi_sr_policy zp;
2599 struct zebra_sr_policy *policy;
2600
2601 /* Get input stream. */
2602 s = msg;
2603 if (zapi_sr_policy_decode(s, &zp) < 0) {
2604 if (IS_ZEBRA_DEBUG_RECV)
2605 zlog_debug("%s: Unable to decode zapi_sr_policy sent",
7d7be47e 2606 __func__);
31f937fb
SM		 2607 return;
2608 }
2609
2610 if (!mpls_enabled)
2611 return;
2612
2613 policy = zebra_sr_policy_find(zp.color, &zp.endpoint);
2614 if (!policy) {
2615 if (IS_ZEBRA_DEBUG_RECV)
7d7be47e 2616 zlog_debug("%s: Unable to find SR-TE policy", __func__);
31f937fb
SM		 2617 return;
2618 }
2619
2620 zebra_sr_policy_del(policy);
2621}
2622
2623int zsend_sr_policy_notify_status(uint32_t color, struct ipaddr *endpoint,
2624 char *name, int status)
2625{
2626 struct zserv *client;
2627 struct stream *s;
2628
2629 client = zserv_find_client(ZEBRA_ROUTE_SRTE, 0);
2630 if (!client) {
2631 if (IS_ZEBRA_DEBUG_PACKET)
2632 zlog_debug(
2633 "Not notifying pathd about policy %s"
2634 " status change to %d",
2635 name, status);
2636 return 0;
2637 }
2638
2639 if (IS_ZEBRA_DEBUG_PACKET)
2640 zlog_debug(
2641 "Notifying pathd about policy %s status change"
2642 " to %d",
2643 name, status);
2644
2645 s = stream_new(ZEBRA_MAX_PACKET_SIZ);
2646 stream_reset(s);
2647
2648 zclient_create_header(s, ZEBRA_SR_POLICY_NOTIFY_STATUS, VRF_DEFAULT);
2649 stream_putl(s, color);
2650 stream_put_ipaddr(s, endpoint);
2651 stream_write(s, name, SRTE_POLICY_NAME_MAX_LENGTH);
2652 stream_putl(s, status);
2653
2654 stream_putw_at(s, 0, stream_get_endp(s));
2655
2656 return zserv_send_message(client, s);
2657}
2658
581e797e
KS		 2659/* Send client close notify to client */
2660int zsend_client_close_notify(struct zserv *client, struct zserv *closed_client)
2661{
2662 struct stream *s = stream_new(ZEBRA_MAX_PACKET_SIZ);
2663
2664 zclient_create_header(s, ZEBRA_CLIENT_CLOSE_NOTIFY, VRF_DEFAULT);
2665
2666 stream_putc(s, closed_client->proto);
2667 stream_putw(s, closed_client->instance);
2668 stream_putl(s, closed_client->session_id);
2669
2670 stream_putw_at(s, 0, stream_get_endp(s));
2671
2672 return zserv_send_message(client, s);
2673}
2674
6e68a084
HS		 2675int zsend_srv6_manager_get_locator_chunk_response(struct zserv *client,
2676 vrf_id_t vrf_id,
2677 struct srv6_locator *loc)
2678{
1bda3e62 2679 struct srv6_locator_chunk chunk = {};
6e68a084
HS		 2680 struct stream *s = stream_new(ZEBRA_MAX_PACKET_SIZ);
2681
ac6a9479
HS		 2682 strlcpy(chunk.locator_name, loc->name, sizeof(chunk.locator_name));
2683 chunk.prefix = loc->prefix;
2684 chunk.block_bits_length = loc->block_bits_length;
2685 chunk.node_bits_length = loc->node_bits_length;
2686 chunk.function_bits_length = loc->function_bits_length;
2687 chunk.argument_bits_length = loc->argument_bits_length;
2688 chunk.keep = 0;
2689 chunk.proto = client->proto;
2690 chunk.instance = client->instance;
6e68a084 2691
ac6a9479
HS		 2692 zclient_create_header(s, ZEBRA_SRV6_MANAGER_GET_LOCATOR_CHUNK, vrf_id);
2693 zapi_srv6_locator_chunk_encode(s, &chunk);
6e68a084 2694 stream_putw_at(s, 0, stream_get_endp(s));
6e68a084
HS		 2695 return zserv_send_message(client, s);
2696}
2697
bf094f69
QY		 2698/* Send response to a table manager connect request to client */
2699static void zread_table_manager_connect(struct zserv *client,
2700 struct stream *msg, vrf_id_t vrf_id)
2701{
2702 struct stream *s;
2703 uint8_t proto;
2704 uint16_t instance;
c479e756 2705 struct vrf *vrf = vrf_lookup_by_id(vrf_id);
bf094f69
QY		 2706
2707 s = msg;
2708
2709 /* Get data. */
2710 STREAM_GETC(s, proto);
2711 STREAM_GETW(s, instance);
2712
2713 /* accept only dynamic routing protocols */
2714 if ((proto >= ZEBRA_ROUTE_MAX) || (proto <= ZEBRA_ROUTE_STATIC)) {
e914ccbe 2715 flog_err(EC_ZEBRA_TM_WRONG_PROTO,
1c50c1c0
QY		 2716 "client %d has wrong protocol %s", client->sock,
2717 zebra_route_string(proto));
bf094f69
QY		 2718 zsend_table_manager_connect_response(client, vrf_id, 1);
2719 return;
2720 }
c479e756
DS		 2721 zlog_notice("client %d with vrf %s(%u) instance %u connected as %s",
2722 client->sock, VRF_LOGNAME(vrf), vrf_id, instance,
2723 zebra_route_string(proto));
bf094f69
QY		 2724 client->proto = proto;
2725 client->instance = instance;
2726
2727 /*
2728 * Release previous labels of same protocol and instance.
2729 * This is done in case it restarted from an unexpected shutdown.
2730 */
453844ab 2731 release_daemon_table_chunks(client);
bf094f69
QY		 2732
2733 zsend_table_manager_connect_response(client, vrf_id, 0);
2734
2735stream_failure:
2736 return;
2737}
2738
2739static void zread_label_manager_connect(struct zserv *client,
2740 struct stream *msg, vrf_id_t vrf_id)
2741{
2742 struct stream *s;
2743 /* type of protocol (lib/zebra.h) */
2744 uint8_t proto;
2745 unsigned short instance;
2746
2747 /* Get input stream. */
2748 s = msg;
2749
2750 /* Get data. */
2751 STREAM_GETC(s, proto);
2752 STREAM_GETW(s, instance);
2753
2754 /* accept only dynamic routing protocols */
2755 if ((proto >= ZEBRA_ROUTE_MAX) || (proto <= ZEBRA_ROUTE_STATIC)) {
e914ccbe 2756 flog_err(EC_ZEBRA_TM_WRONG_PROTO,
1c50c1c0
QY		 2757 "client %d has wrong protocol %s", client->sock,
2758 zebra_route_string(proto));
e11d7c96 2759 zsend_label_manager_connect_response(client, vrf_id, 1);
bf094f69
QY		 2760 return;
2761 }
e11d7c96
EDP		 2762
2763 /* recall proto and instance in this socket */
bf094f69
QY		 2764 client->proto = proto;
2765 client->instance = instance;
2766
e11d7c96 2767 /* call hook for connection using wrapper */
4cebdb9b 2768 lm_client_connect_call(client, vrf_id);
bf094f69
QY		 2769
2770stream_failure:
2771 return;
2772}
2773
2774static void zread_get_label_chunk(struct zserv *client, struct stream *msg,
2775 vrf_id_t vrf_id)
2776{
2777 struct stream *s;
2778 uint8_t keep;
0e3b6a92 2779 uint32_t size, base;
e11d7c96 2780 struct label_manager_chunk *lmc = NULL;
5dffb0e9
FR		 2781 uint8_t proto;
2782 unsigned short instance;
bf094f69
QY		 2783
2784 /* Get input stream. */
2785 s = msg;
2786
2787 /* Get data. */
5dffb0e9
FR		 2788 STREAM_GETC(s, proto);
2789 STREAM_GETW(s, instance);
bf094f69
QY		 2790 STREAM_GETC(s, keep);
2791 STREAM_GETL(s, size);
0e3b6a92 2792 STREAM_GETL(s, base);
bf094f69 2793
4cebdb9b
MS		 2794 assert(proto == client->proto && instance == client->instance);
2795
e11d7c96 2796 /* call hook to get a chunk using wrapper */
4cebdb9b 2797 lm_get_chunk_call(&lmc, client, keep, size, base, vrf_id);
bf094f69 2798
bf094f69
QY		 2799stream_failure:
2800 return;
2801}
2802
2803static void zread_release_label_chunk(struct zserv *client, struct stream *msg)
2804{
2805 struct stream *s;
2806 uint32_t start, end;
5dffb0e9
FR		 2807 uint8_t proto;
2808 unsigned short instance;
bf094f69
QY		 2809
2810 /* Get input stream. */
2811 s = msg;
2812
2813 /* Get data. */
5dffb0e9
FR		 2814 STREAM_GETC(s, proto);
2815 STREAM_GETW(s, instance);
bf094f69
QY		 2816 STREAM_GETL(s, start);
2817 STREAM_GETL(s, end);
2818
4cebdb9b
MS		 2819 assert(proto == client->proto && instance == client->instance);
2820
e11d7c96 2821 /* call hook to release a chunk using wrapper */
4cebdb9b 2822 lm_release_chunk_call(client, start, end);
bf094f69
QY		 2823
2824stream_failure:
2825 return;
2826}
e11d7c96 2827
bf094f69
QY		 2828static void zread_label_manager_request(ZAPI_HANDLER_ARGS)
2829{
e11d7c96
EDP		 2830 if (hdr->command == ZEBRA_LABEL_MANAGER_CONNECT
2831 || hdr->command == ZEBRA_LABEL_MANAGER_CONNECT_ASYNC)
2832 zread_label_manager_connect(client, msg, zvrf_id(zvrf));
bf094f69 2833 else {
e11d7c96
EDP		 2834 if (hdr->command == ZEBRA_GET_LABEL_CHUNK)
2835 zread_get_label_chunk(client, msg, zvrf_id(zvrf));
2836 else if (hdr->command == ZEBRA_RELEASE_LABEL_CHUNK)
2837 zread_release_label_chunk(client, msg);
bf094f69
QY		 2838 }
2839}
2840
2841static void zread_get_table_chunk(struct zserv *client, struct stream *msg,
2842 vrf_id_t vrf_id)
2843{
2844 struct stream *s;
2845 uint32_t size;
2846 struct table_manager_chunk *tmc;
2847
2848 /* Get input stream. */
2849 s = msg;
2850
2851 /* Get data. */
2852 STREAM_GETL(s, size);
2853
2854 tmc = assign_table_chunk(client->proto, client->instance, size);
2855 if (!tmc)
e914ccbe 2856 flog_err(EC_ZEBRA_TM_CANNOT_ASSIGN_CHUNK,
1c50c1c0
QY		 2857 "%s: Unable to assign Table Chunk of size %u",
2858 __func__, size);
bf094f69
QY		 2859 else
2860 zlog_debug("Assigned Table Chunk %u - %u", tmc->start,
2861 tmc->end);
2862 /* send response back */
2863 zsend_assign_table_chunk_response(client, vrf_id, tmc);
2864
2865stream_failure:
2866 return;
2867}
2868
2869static void zread_release_table_chunk(struct zserv *client, struct stream *msg)
2870{
2871 struct stream *s;
2872 uint32_t start, end;
2873
2874 /* Get input stream. */
2875 s = msg;
2876
2877 /* Get data. */
2878 STREAM_GETL(s, start);
2879 STREAM_GETL(s, end);
2880
2881 release_table_chunk(client->proto, client->instance, start, end);
2882
2883stream_failure:
2884 return;
2885}
2886
2887static void zread_table_manager_request(ZAPI_HANDLER_ARGS)
2888{
16bd37d6 2889 /* to avoid sending other messages like ZEBRA_INTERFACE_UP */
bf094f69
QY		 2890 if (hdr->command == ZEBRA_TABLE_MANAGER_CONNECT)
2891 zread_table_manager_connect(client, msg, zvrf_id(zvrf));
2892 else {
2893 /* Sanity: don't allow 'unidentified' requests */
2894 if (!client->proto) {
af4c2728 2895 flog_err(
e914ccbe 2896 EC_ZEBRA_TM_ALIENS,
16bd37d6 2897 "Got SRv6 request from an unidentified client");
bf094f69
QY		 2898 return;
2899 }
2900 if (hdr->command == ZEBRA_GET_TABLE_CHUNK)
2901 zread_get_table_chunk(client, msg, zvrf_id(zvrf));
2902 else if (hdr->command == ZEBRA_RELEASE_TABLE_CHUNK)
2903 zread_release_table_chunk(client, msg);
2904 }
2905}
2906
6e68a084
HS		 2907static void zread_srv6_manager_get_locator_chunk(struct zserv *client,
2908 struct stream *msg,
2909 vrf_id_t vrf_id)
2910{
2911 struct stream *s = msg;
6e68a084
HS		 2912 uint16_t len;
2913 char locator_name[SRV6_LOCNAME_SIZE] = {0};
2914
2915 /* Get data. */
6e68a084
HS		 2916 STREAM_GETW(s, len);
2917 STREAM_GET(locator_name, s, len);
2918
6e68a084
HS		 2919 /* call hook to get a chunk using wrapper */
2920 struct srv6_locator *loc = NULL;
2921 srv6_manager_get_locator_chunk_call(&loc, client, locator_name, vrf_id);
2922
2923stream_failure:
2924 return;
2925}
2926
2927static void zread_srv6_manager_release_locator_chunk(struct zserv *client,
2928 struct stream *msg,
2929 vrf_id_t vrf_id)
2930{
2931 struct stream *s = msg;
6e68a084
HS		 2932 uint16_t len;
2933 char locator_name[SRV6_LOCNAME_SIZE] = {0};
2934
2935 /* Get data. */
6e68a084
HS		 2936 STREAM_GETW(s, len);
2937 STREAM_GET(locator_name, s, len);
2938
6e68a084
HS		 2939 /* call hook to release a chunk using wrapper */
2940 srv6_manager_release_locator_chunk_call(client, locator_name, vrf_id);
2941
2942stream_failure:
2943 return;
2944}
2945
2946static void zread_srv6_manager_request(ZAPI_HANDLER_ARGS)
2947{
2948 switch (hdr->command) {
6e68a084
HS		 2949 case ZEBRA_SRV6_MANAGER_GET_LOCATOR_CHUNK:
2950 zread_srv6_manager_get_locator_chunk(client, msg,
2951 zvrf_id(zvrf));
2952 break;
2953 case ZEBRA_SRV6_MANAGER_RELEASE_LOCATOR_CHUNK:
2954 zread_srv6_manager_release_locator_chunk(client, msg,
2955 zvrf_id(zvrf));
2956 break;
2957 default:
9f900cda 2958 zlog_err("%s: unknown SRv6 Manager command", __func__);
6e68a084
HS		 2959 break;
2960 }
2961}
2962
bf094f69
QY		 2963static void zread_pseudowire(ZAPI_HANDLER_ARGS)
2964{
2965 struct stream *s;
2966 char ifname[IF_NAMESIZE];
2967 ifindex_t ifindex;
2968 int type;
2969 int af;
2970 union g_addr nexthop;
2971 uint32_t local_label;
2972 uint32_t remote_label;
2973 uint8_t flags;
2974 union pw_protocol_fields data;
2975 uint8_t protocol;
2976 struct zebra_pw *pw;
2977
2978 /* Get input stream. */
2979 s = msg;
2980
2981 /* Get data. */
2982 STREAM_GET(ifname, s, IF_NAMESIZE);
f223b3d1 2983 ifname[IF_NAMESIZE - 1] = '\0';
bf094f69
QY		 2984 STREAM_GETL(s, ifindex);
2985 STREAM_GETL(s, type);
2986 STREAM_GETL(s, af);
2987 switch (af) {
2988 case AF_INET:
2989 STREAM_GET(&nexthop.ipv4.s_addr, s, IPV4_MAX_BYTELEN);
2990 break;
2991 case AF_INET6:
2992 STREAM_GET(&nexthop.ipv6, s, 16);
2993 break;
2994 default:
2995 return;
2996 }
2997 STREAM_GETL(s, local_label);
2998 STREAM_GETL(s, remote_label);
2999 STREAM_GETC(s, flags);
3000 STREAM_GET(&data, s, sizeof(data));
3001 protocol = client->proto;
3002
3003 pw = zebra_pw_find(zvrf, ifname);
3004 switch (hdr->command) {
3005 case ZEBRA_PW_ADD:
3006 if (pw) {
e914ccbe 3007 flog_warn(EC_ZEBRA_PSEUDOWIRE_EXISTS,
9df414fe 3008 "%s: pseudowire %s already exists [%s]",
bf094f69
QY		 3009 __func__, ifname,
3010 zserv_command_string(hdr->command));
3011 return;
3012 }
3013
3014 zebra_pw_add(zvrf, ifname, protocol, client);
3015 break;
3016 case ZEBRA_PW_DELETE:
3017 if (!pw) {
e914ccbe 3018 flog_warn(EC_ZEBRA_PSEUDOWIRE_NONEXISTENT,
9df414fe 3019 "%s: pseudowire %s not found [%s]", __func__,
bf094f69
QY		 3020 ifname, zserv_command_string(hdr->command));
3021 return;
3022 }
3023
3024 zebra_pw_del(zvrf, pw);
3025 break;
3026 case ZEBRA_PW_SET:
3027 case ZEBRA_PW_UNSET:
3028 if (!pw) {
e914ccbe 3029 flog_warn(EC_ZEBRA_PSEUDOWIRE_NONEXISTENT,
9df414fe 3030 "%s: pseudowire %s not found [%s]", __func__,
bf094f69
QY		 3031 ifname, zserv_command_string(hdr->command));
3032 return;
3033 }
3034
3035 switch (hdr->command) {
3036 case ZEBRA_PW_SET:
3037 pw->enabled = 1;
3038 break;
3039 case ZEBRA_PW_UNSET:
3040 pw->enabled = 0;
3041 break;
3042 }
3043
3044 zebra_pw_change(pw, ifindex, type, af, &nexthop, local_label,
3045 remote_label, flags, &data);
3046 break;
3047 }
3048
3049stream_failure:
3050 return;
3051}
3052
3053static void zread_interface_set_master(ZAPI_HANDLER_ARGS)
3054{
3055 struct interface *master;
3056 struct interface *slave;
3057 struct stream *s = msg;
3058 int ifindex;
3059 vrf_id_t vrf_id;
3060
3061 STREAM_GETL(s, vrf_id);
3062 STREAM_GETL(s, ifindex);
3063 master = if_lookup_by_index(ifindex, vrf_id);
3064
3065 STREAM_GETL(s, vrf_id);
3066 STREAM_GETL(s, ifindex);
3067 slave = if_lookup_by_index(ifindex, vrf_id);
3068
3069 if (!master || !slave)
3070 return;
3071
3072 kernel_interface_set_master(master, slave);
3073
3074stream_failure:
3075 return;
3076}
3077
3078
3079static void zread_vrf_label(ZAPI_HANDLER_ARGS)
3080{
3081 struct interface *ifp;
3082 mpls_label_t nlabel;
3083 afi_t afi;
3084 struct stream *s;
3085 struct zebra_vrf *def_zvrf;
3086 enum lsp_types_t ltype;
3087
3088 s = msg;
3089 STREAM_GETL(s, nlabel);
3090 STREAM_GETC(s, afi);
663d3a91
QY		 3091
3092 if (!(IS_VALID_AFI(afi))) {
3093 zlog_warn("Invalid AFI for VRF label: %u", afi);
3094 return;
3095 }
3096
bf094f69
QY		 3097 if (nlabel == zvrf->label[afi]) {
3098 /*
3099 * Nothing to do here move along
3100 */
3101 return;
3102 }
3103
3104 STREAM_GETC(s, ltype);
3105
3106 if (zvrf->vrf->vrf_id != VRF_DEFAULT)
a36898e7 3107 ifp = if_lookup_by_name(zvrf->vrf->name, zvrf->vrf->vrf_id);
bf094f69 3108 else
a36898e7 3109 ifp = if_lookup_by_name("lo", VRF_DEFAULT);
bf094f69
QY		 3110
3111 if (!ifp) {
3112 zlog_debug("Unable to find specified Interface for %s",
3113 zvrf->vrf->name);
3114 return;
3115 }
3116
3117 def_zvrf = zebra_vrf_lookup_by_id(VRF_DEFAULT);
3118
3119 if (zvrf->label[afi] != MPLS_LABEL_NONE) {
3120 afi_t scrubber;
3121 bool really_remove;
3122
3123 really_remove = true;
3124 for (scrubber = AFI_IP; scrubber < AFI_MAX; scrubber++) {
3125 if (scrubber == afi)
3126 continue;
3127
3128 if (zvrf->label[scrubber] == MPLS_LABEL_NONE)
3129 continue;
3130
3131 if (zvrf->label[afi] == zvrf->label[scrubber]) {
3132 really_remove = false;
3133 break;
3134 }
3135 }
3136
3137 if (really_remove)
3138 mpls_lsp_uninstall(def_zvrf, ltype, zvrf->label[afi],
3139 NEXTHOP_TYPE_IFINDEX, NULL,
cc1b9746 3140 ifp->ifindex, false /*backup*/);
bf094f69
QY		 3141 }
3142
5065db0a
RW		 3143 if (nlabel != MPLS_LABEL_NONE) {
3144 mpls_label_t out_label = MPLS_LABEL_IMPLICIT_NULL;
3145 mpls_lsp_install(def_zvrf, ltype, nlabel, 1, &out_label,
3146 NEXTHOP_TYPE_IFINDEX, NULL, ifp->ifindex);
3147 }
bf094f69
QY		 3148
3149 zvrf->label[afi] = nlabel;
06302ecb
DS		 3150 zvrf->label_proto[afi] = client->proto;
3151
bf094f69
QY		 3152stream_failure:
3153 return;
3154}
3155
3156static inline void zread_rule(ZAPI_HANDLER_ARGS)
3157{
3158 struct zebra_pbr_rule zpr;
3159 struct stream *s;
3160 uint32_t total, i;
58a1d249 3161 char ifname[INTERFACE_NAMSIZ + 1] = {};
bf094f69
QY		 3162
3163 s = msg;
3164 STREAM_GETL(s, total);
3165
3166 for (i = 0; i < total; i++) {
3167 memset(&zpr, 0, sizeof(zpr));
3168
3169 zpr.sock = client->sock;
3170 zpr.rule.vrf_id = hdr->vrf_id;
3171 STREAM_GETL(s, zpr.rule.seq);
3172 STREAM_GETL(s, zpr.rule.priority);
3173 STREAM_GETL(s, zpr.rule.unique);
f56697ef 3174 STREAM_GETC(s, zpr.rule.filter.ip_proto);
bf094f69
QY		 3175 STREAM_GETC(s, zpr.rule.filter.src_ip.family);
3176 STREAM_GETC(s, zpr.rule.filter.src_ip.prefixlen);
3177 STREAM_GET(&zpr.rule.filter.src_ip.u.prefix, s,
3178 prefix_blen(&zpr.rule.filter.src_ip));
3179 STREAM_GETW(s, zpr.rule.filter.src_port);
3180 STREAM_GETC(s, zpr.rule.filter.dst_ip.family);
3181 STREAM_GETC(s, zpr.rule.filter.dst_ip.prefixlen);
3182 STREAM_GET(&zpr.rule.filter.dst_ip.u.prefix, s,
3183 prefix_blen(&zpr.rule.filter.dst_ip));
3184 STREAM_GETW(s, zpr.rule.filter.dst_port);
01f23aff 3185 STREAM_GETC(s, zpr.rule.filter.dsfield);
bf094f69
QY		 3186 STREAM_GETL(s, zpr.rule.filter.fwmark);
3187 STREAM_GETL(s, zpr.rule.action.table);
58a1d249 3188 STREAM_GET(ifname, s, INTERFACE_NAMSIZ);
bf094f69 3189
58a1d249
DS		 3190 strlcpy(zpr.ifname, ifname, sizeof(zpr.ifname));
3191 strlcpy(zpr.rule.ifname, ifname, sizeof(zpr.rule.ifname));
bf094f69
QY		 3192
3193 if (!is_default_prefix(&zpr.rule.filter.src_ip))
3194 zpr.rule.filter.filter_bm |= PBR_FILTER_SRC_IP;
3195
3196 if (!is_default_prefix(&zpr.rule.filter.dst_ip))
3197 zpr.rule.filter.filter_bm |= PBR_FILTER_DST_IP;
3198
3199 if (zpr.rule.filter.src_port)
3200 zpr.rule.filter.filter_bm |= PBR_FILTER_SRC_PORT;
3201
3202 if (zpr.rule.filter.dst_port)
3203 zpr.rule.filter.filter_bm |= PBR_FILTER_DST_PORT;
3204
01f23aff
WC		 3205 if (zpr.rule.filter.dsfield)
3206 zpr.rule.filter.filter_bm |= PBR_FILTER_DSFIELD;
3207
f56697ef
DS		 3208 if (zpr.rule.filter.ip_proto)
3209 zpr.rule.filter.filter_bm |= PBR_FILTER_IP_PROTOCOL;
3210
bf094f69
QY		 3211 if (zpr.rule.filter.fwmark)
3212 zpr.rule.filter.filter_bm |= PBR_FILTER_FWMARK;
3213
4719fd76
QY		 3214 if (!(zpr.rule.filter.src_ip.family == AF_INET
3215 || zpr.rule.filter.src_ip.family == AF_INET6)) {
cc815be7 3216 zlog_warn(
6cde4b45 3217 "Unsupported PBR source IP family: %s (%hhu)",
cc815be7
QY		 3218 family2str(zpr.rule.filter.src_ip.family),
3219 zpr.rule.filter.src_ip.family);
4719fd76
QY		 3220 return;
3221 }
3222 if (!(zpr.rule.filter.dst_ip.family == AF_INET
3223 || zpr.rule.filter.dst_ip.family == AF_INET6)) {
cec72d49 3224 zlog_warn(
6cde4b45 3225 "Unsupported PBR destination IP family: %s (%hhu)",
cec72d49
DA		 3226 family2str(zpr.rule.filter.dst_ip.family),
3227 zpr.rule.filter.dst_ip.family);
4719fd76
QY		 3228 return;
3229 }
3230
3231
7f0ea8a4 3232 zpr.vrf_id = zvrf->vrf->vrf_id;
bf094f69 3233 if (hdr->command == ZEBRA_RULE_ADD)
7f0ea8a4 3234 zebra_pbr_add_rule(&zpr);
bf094f69 3235 else
7f0ea8a4 3236 zebra_pbr_del_rule(&zpr);
bf094f69
QY		 3237 }
3238
3239stream_failure:
3240 return;
3241}
3242
3243static inline void zread_ipset(ZAPI_HANDLER_ARGS)
3244{
3245 struct zebra_pbr_ipset zpi;
3246 struct stream *s;
3247 uint32_t total, i;
3248
3249 s = msg;
3250 STREAM_GETL(s, total);
3251
3252 for (i = 0; i < total; i++) {
3253 memset(&zpi, 0, sizeof(zpi));
3254
3255 zpi.sock = client->sock;
be2028d1 3256 zpi.vrf_id = zvrf->vrf->vrf_id;
bf094f69
QY		 3257 STREAM_GETL(s, zpi.unique);
3258 STREAM_GETL(s, zpi.type);
a60b7031 3259 STREAM_GETC(s, zpi.family);
bf094f69
QY		 3260 STREAM_GET(&zpi.ipset_name, s, ZEBRA_IPSET_NAME_SIZE);
3261
3262 if (hdr->command == ZEBRA_IPSET_CREATE)
62f20a52 3263 zebra_pbr_create_ipset(&zpi);
bf094f69 3264 else
62f20a52 3265 zebra_pbr_destroy_ipset(&zpi);
bf094f69
QY		 3266 }
3267
3268stream_failure:
3269 return;
3270}
3271
3272static inline void zread_ipset_entry(ZAPI_HANDLER_ARGS)
3273{
3274 struct zebra_pbr_ipset_entry zpi;
3275 struct zebra_pbr_ipset ipset;
3276 struct stream *s;
3277 uint32_t total, i;
3278
3279 s = msg;
3280 STREAM_GETL(s, total);
3281
3282 for (i = 0; i < total; i++) {
3283 memset(&zpi, 0, sizeof(zpi));
3284 memset(&ipset, 0, sizeof(ipset));
3285
3286 zpi.sock = client->sock;
3287 STREAM_GETL(s, zpi.unique);
3288 STREAM_GET(&ipset.ipset_name, s, ZEBRA_IPSET_NAME_SIZE);
261462c3 3289 ipset.ipset_name[ZEBRA_IPSET_NAME_SIZE - 1] = '\0';
bf094f69
QY		 3290 STREAM_GETC(s, zpi.src.family);
3291 STREAM_GETC(s, zpi.src.prefixlen);
3292 STREAM_GET(&zpi.src.u.prefix, s, prefix_blen(&zpi.src));
3293 STREAM_GETC(s, zpi.dst.family);
3294 STREAM_GETC(s, zpi.dst.prefixlen);
3295 STREAM_GET(&zpi.dst.u.prefix, s, prefix_blen(&zpi.dst));
3296
25d760c5
PG		 3297 STREAM_GETW(s, zpi.src_port_min);
3298 STREAM_GETW(s, zpi.src_port_max);
3299 STREAM_GETW(s, zpi.dst_port_min);
3300 STREAM_GETW(s, zpi.dst_port_max);
3301 STREAM_GETC(s, zpi.proto);
bf094f69
QY		 3302 if (!is_default_prefix(&zpi.src))
3303 zpi.filter_bm |= PBR_FILTER_SRC_IP;
3304
3305 if (!is_default_prefix(&zpi.dst))
3306 zpi.filter_bm |= PBR_FILTER_DST_IP;
be729dd7 3307 if (zpi.dst_port_min != 0 || zpi.proto == IPPROTO_ICMP)
25d760c5 3308 zpi.filter_bm |= PBR_FILTER_DST_PORT;
be729dd7 3309 if (zpi.src_port_min != 0 || zpi.proto == IPPROTO_ICMP)
25d760c5
PG		 3310 zpi.filter_bm |= PBR_FILTER_SRC_PORT;
3311 if (zpi.dst_port_max != 0)
3312 zpi.filter_bm |= PBR_FILTER_DST_PORT_RANGE;
3313 if (zpi.src_port_max != 0)
3314 zpi.filter_bm |= PBR_FILTER_SRC_PORT_RANGE;
3315 if (zpi.proto != 0)
3316 zpi.filter_bm |= PBR_FILTER_PROTO;
bf094f69 3317
9863725c
QY		 3318 if (!(zpi.dst.family == AF_INET
3319 || zpi.dst.family == AF_INET6)) {
cec72d49 3320 zlog_warn(
6cde4b45 3321 "Unsupported PBR destination IP family: %s (%hhu)",
cec72d49 3322 family2str(zpi.dst.family), zpi.dst.family);
9863725c
QY		 3323 goto stream_failure;
3324 }
3325 if (!(zpi.src.family == AF_INET
3326 || zpi.src.family == AF_INET6)) {
cec72d49 3327 zlog_warn(
6cde4b45 3328 "Unsupported PBR source IP family: %s (%hhu)",
cec72d49 3329 family2str(zpi.src.family), zpi.src.family);
9863725c
QY		 3330 goto stream_failure;
3331 }
3332
bf094f69 3333 /* calculate backpointer */
62f20a52
DS		 3334 zpi.backpointer =
3335 zebra_pbr_lookup_ipset_pername(ipset.ipset_name);
f096bae4
DS		 3336
3337 if (!zpi.backpointer) {
3338 zlog_warn("ipset name specified: %s does not exist",
3339 ipset.ipset_name);
3340 goto stream_failure;
3341 }
3342
bf094f69 3343 if (hdr->command == ZEBRA_IPSET_ENTRY_ADD)
62f20a52 3344 zebra_pbr_add_ipset_entry(&zpi);
bf094f69 3345 else
62f20a52 3346 zebra_pbr_del_ipset_entry(&zpi);
bf094f69
QY		 3347 }
3348
3349stream_failure:
3350 return;
3351}
3352
05657ec2 3353
7723e8d3
PG		 3354static inline void zebra_neigh_register(ZAPI_HANDLER_ARGS)
3355{
3356 afi_t afi;
3357
3358 STREAM_GETW(msg, afi);
3359 if (afi <= AFI_UNSPEC || afi >= AFI_MAX) {
3360 zlog_warn(
3361 "Invalid AFI %u while registering for neighbors notifications",
3362 afi);
3363 goto stream_failure;
3364 }
3365 vrf_bitmap_set(client->nhrp_neighinfo[afi], zvrf_id(zvrf));
3366stream_failure:
3367 return;
3368}
3369
3370static inline void zebra_neigh_unregister(ZAPI_HANDLER_ARGS)
3371{
3372 afi_t afi;
3373
3374 STREAM_GETW(msg, afi);
3375 if (afi <= AFI_UNSPEC || afi >= AFI_MAX) {
3376 zlog_warn(
3377 "Invalid AFI %u while unregistering from neighbor notifications",
3378 afi);
3379 goto stream_failure;
3380 }
3381 vrf_bitmap_unset(client->nhrp_neighinfo[afi], zvrf_id(zvrf));
3382stream_failure:
3383 return;
3384}
3385
d17af8dd
PG		 3386static inline void zebra_gre_get(ZAPI_HANDLER_ARGS)
3387{
3388 struct stream *s;
3389 ifindex_t idx;
3390 struct interface *ifp;
3391 struct zebra_if *zebra_if = NULL;
3392 struct zebra_l2info_gre *gre_info;
3393 struct interface *ifp_link = NULL;
3394 vrf_id_t vrf_id_link = VRF_UNKNOWN;
3395 vrf_id_t vrf_id = zvrf->vrf->vrf_id;
3396
3397 s = msg;
3398 STREAM_GETL(s, idx);
3399 ifp = if_lookup_by_index(idx, vrf_id);
3400
3401 if (ifp)
3402 zebra_if = ifp->info;
3403
3404 s = stream_new(ZEBRA_MAX_PACKET_SIZ);
3405
3406 zclient_create_header(s, ZEBRA_GRE_UPDATE, vrf_id);
3407
3408 if (ifp && IS_ZEBRA_IF_GRE(ifp) && zebra_if) {
3409 gre_info = &zebra_if->l2info.gre;
3410
3411 stream_putl(s, idx);
3412 stream_putl(s, gre_info->ikey);
3413 stream_putl(s, gre_info->ikey);
3414 stream_putl(s, gre_info->ifindex_link);
3415
3416 ifp_link = if_lookup_by_index_per_ns(
3417 zebra_ns_lookup(gre_info->link_nsid),
3418 gre_info->ifindex_link);
3419 if (ifp_link)
3420 vrf_id_link = ifp_link->vrf_id;
3421 stream_putl(s, vrf_id_link);
3422 stream_putl(s, gre_info->vtep_ip.s_addr);
3423 stream_putl(s, gre_info->vtep_ip_remote.s_addr);
3424 } else {
3425 stream_putl(s, idx);
3426 stream_putl(s, 0);
3427 stream_putl(s, 0);
3428 stream_putl(s, IFINDEX_INTERNAL);
3429 stream_putl(s, VRF_UNKNOWN);
3430 stream_putl(s, 0);
3431 }
3432 /* Write packet size. */
3433 stream_putw_at(s, 0, stream_get_endp(s));
3434 zserv_send_message(client, s);
3435
3436 return;
3437 stream_failure:
3438 return;
3439}
3440
541025d6
PG		 3441static inline void zebra_configure_arp(ZAPI_HANDLER_ARGS)
3442{
3443 struct stream *s;
e18747a9 3444 uint8_t fam;
541025d6
PG		 3445 ifindex_t idx;
3446 struct interface *ifp;
541025d6
PG		 3447
3448 s = msg;
3449 STREAM_GETC(s, fam);
3450 if (fam != AF_INET && fam != AF_INET6)
3451 return;
3452 STREAM_GETL(s, idx);
3453 ifp = if_lookup_by_index_per_ns(zvrf->zns, idx);
3454 if (!ifp)
3455 return;
e18747a9 3456 dplane_neigh_table_update(ifp, fam, 1, 0, 0);
541025d6
PG		 3457stream_failure:
3458 return;
3459}
3460
d603c077 3461static inline void zebra_neigh_ip_add(ZAPI_HANDLER_ARGS)
05657ec2
PG		 3462{
3463 struct stream *s;
d603c077 3464 struct zapi_neigh_ip api = {};
05657ec2 3465 int ret;
0a27a2fe 3466 const struct interface *ifp;
05657ec2
PG		 3467
3468 s = msg;
d603c077 3469 ret = zclient_neigh_ip_decode(s, &api);
05657ec2
PG		 3470 if (ret < 0)
3471 return;
0a27a2fe
PG		 3472 ifp = if_lookup_by_index(api.index, zvrf_id(zvrf));
3473 if (!ifp)
3474 return;
3475 dplane_neigh_ip_update(DPLANE_OP_NEIGH_IP_INSTALL, ifp, &api.ip_out,
d603c077 3476 &api.ip_in, api.ndm_state, client->proto);
05657ec2
PG		 3477}
3478
0a27a2fe 3479
d603c077 3480static inline void zebra_neigh_ip_del(ZAPI_HANDLER_ARGS)
05657ec2
PG		 3481{
3482 struct stream *s;
d603c077 3483 struct zapi_neigh_ip api = {};
05657ec2 3484 int ret;
0a27a2fe 3485 struct interface *ifp;
05657ec2 3486
05657ec2 3487 s = msg;
d603c077 3488 ret = zclient_neigh_ip_decode(s, &api);
05657ec2
PG		 3489 if (ret < 0)
3490 return;
0a27a2fe
PG		 3491 ifp = if_lookup_by_index(api.index, zvrf_id(zvrf));
3492 if (!ifp)
3493 return;
3494 dplane_neigh_ip_update(DPLANE_OP_NEIGH_IP_DELETE, ifp, &api.ip_out,
d603c077 3495 &api.ip_in, api.ndm_state, client->proto);
05657ec2
PG		 3496}
3497
3498
bf094f69
QY		 3499static inline void zread_iptable(ZAPI_HANDLER_ARGS)
3500{
8b5c4dce
QY		 3501 struct zebra_pbr_iptable *zpi =
3502 XCALLOC(MTYPE_TMP, sizeof(struct zebra_pbr_iptable));
bf094f69
QY		 3503 struct stream *s;
3504
3505 s = msg;
3506
8b5c4dce
QY		 3507 zpi->interface_name_list = list_new();
3508 zpi->sock = client->sock;
3509 zpi->vrf_id = zvrf->vrf->vrf_id;
3510 STREAM_GETL(s, zpi->unique);
3511 STREAM_GETL(s, zpi->type);
3512 STREAM_GETL(s, zpi->filter_bm);
3513 STREAM_GETL(s, zpi->action);
3514 STREAM_GETL(s, zpi->fwmark);
3515 STREAM_GET(&zpi->ipset_name, s, ZEBRA_IPSET_NAME_SIZE);
a60b7031 3516 STREAM_GETC(s, zpi->family);
8b5c4dce
QY		 3517 STREAM_GETW(s, zpi->pkt_len_min);
3518 STREAM_GETW(s, zpi->pkt_len_max);
3519 STREAM_GETW(s, zpi->tcp_flags);
3520 STREAM_GETW(s, zpi->tcp_mask_flags);
3521 STREAM_GETC(s, zpi->dscp_value);
3522 STREAM_GETC(s, zpi->fragment);
3523 STREAM_GETC(s, zpi->protocol);
a60b7031 3524 STREAM_GETW(s, zpi->flow_label);
8b5c4dce
QY		 3525 STREAM_GETL(s, zpi->nb_interface);
3526 zebra_pbr_iptable_update_interfacelist(s, zpi);
bf094f69
QY		 3527
3528 if (hdr->command == ZEBRA_IPTABLE_ADD)
8b5c4dce 3529 zebra_pbr_add_iptable(zpi);
bf094f69 3530 else
8b5c4dce
QY		 3531 zebra_pbr_del_iptable(zpi);
3532
bf094f69 3533stream_failure:
8b5c4dce
QY		 3534 zebra_pbr_iptable_free(zpi);
3535 zpi = NULL;
bf094f69
QY		 3536 return;
3537}
3538
d68e74b4
JU		 3539static inline void zread_neigh_discover(ZAPI_HANDLER_ARGS)
3540{
3541 struct stream *s;
3542 ifindex_t ifindex;
3543 struct interface *ifp;
3544 struct prefix p;
3545 struct ipaddr ip;
3546
3547 s = msg;
3548
3549 STREAM_GETL(s, ifindex);
3550
3551 ifp = if_lookup_by_index_per_ns(zvrf->zns, ifindex);
3552 if (!ifp) {
3553 zlog_debug("Failed to lookup ifindex: %u", ifindex);
3554 return;
3555 }
3556
3557 STREAM_GETC(s, p.family);
3558 STREAM_GETC(s, p.prefixlen);
3559 STREAM_GET(&p.u.prefix, s, prefix_blen(&p));
3560
3561 if (p.family == AF_INET)
3562 SET_IPADDR_V4(&ip);
3563 else
3564 SET_IPADDR_V6(&ip);
3565
3566 memcpy(&ip.ip.addr, &p.u.prefix, prefix_blen(&p));
3567
3568 dplane_neigh_discover(ifp, &ip);
3569
3570stream_failure:
3571 return;
3572}
3573
b716ab61
PG		 3574static inline void zebra_gre_source_set(ZAPI_HANDLER_ARGS)
3575{
3576 struct stream *s;
3577 ifindex_t idx, link_idx;
3578 vrf_id_t link_vrf_id;
3579 struct interface *ifp;
3580 struct interface *ifp_link;
b716ab61 3581 vrf_id_t vrf_id = zvrf->vrf->vrf_id;
62b4b7e4
PG		 3582 struct zebra_if *zif, *gre_zif;
3583 struct zebra_l2info_gre *gre_info;
db51f0cd 3584 unsigned int mtu;
b716ab61
PG		 3585
3586 s = msg;
3587 STREAM_GETL(s, idx);
3588 ifp = if_lookup_by_index(idx, vrf_id);
3589 STREAM_GETL(s, link_idx);
3590 STREAM_GETL(s, link_vrf_id);
db51f0cd 3591 STREAM_GETL(s, mtu);
62b4b7e4 3592
b716ab61
PG		 3593 ifp_link = if_lookup_by_index(link_idx, link_vrf_id);
3594 if (!ifp_link || !ifp) {
3595 zlog_warn("GRE (index %u, VRF %u) or GRE link interface (index %u, VRF %u) not found, when setting GRE params",
3596 idx, vrf_id, link_idx, link_vrf_id);
3597 return;
3598 }
62b4b7e4
PG		 3599
3600 if (!IS_ZEBRA_IF_GRE(ifp))
3601 return;
3602
3603 gre_zif = (struct zebra_if *)ifp->info;
3604 zif = (struct zebra_if *)ifp_link->info;
3605 if (!zif || !gre_zif)
3606 return;
3607
3608 gre_info = &zif->l2info.gre;
3609 if (!gre_info)
3610 return;
3611
db51f0cd
PG		 3612 if (!mtu)
3613 mtu = ifp->mtu;
3614
3615 /* if gre link already set or mtu did not change, do not set it */
3616 if (gre_zif->link && gre_zif->link == ifp_link && mtu == ifp->mtu)
62b4b7e4
PG		 3617 return;
3618
e3d3fa06 3619 dplane_gre_set(ifp, ifp_link, mtu, gre_info);
b716ab61
PG		 3620
3621 stream_failure:
3622 return;
3623}
3624
9ab0b2a3
SW		 3625static void zsend_error_msg(struct zserv *client, enum zebra_error_types error,
3626 struct zmsghdr *bad_hdr)
3627{
3628
3629 struct stream *s = stream_new(ZEBRA_MAX_PACKET_SIZ);
3630
3631 zclient_create_header(s, ZEBRA_ERROR, bad_hdr->vrf_id);
3632
3633 zserv_encode_error(s, error);
3634
3635 client->error_cnt++;
3636 zserv_send_message(client, s);
3637}
3638
3639static void zserv_error_no_vrf(ZAPI_HANDLER_ARGS)
3640{
3641 if (IS_ZEBRA_DEBUG_PACKET && IS_ZEBRA_DEBUG_RECV)
3642 zlog_debug("ZAPI message specifies unknown VRF: %d",
3643 hdr->vrf_id);
3644
5ee080f0 3645 zsend_error_msg(client, ZEBRA_NO_VRF, hdr);
9ab0b2a3
SW		 3646}
3647
3648static void zserv_error_invalid_msg_type(ZAPI_HANDLER_ARGS)
3649{
3650 zlog_info("Zebra received unknown command %d", hdr->command);
3651
5ee080f0 3652 zsend_error_msg(client, ZEBRA_INVALID_MSG_TYPE, hdr);
9ab0b2a3
SW		 3653}
3654
2b64873d 3655void (*const zserv_handlers[])(ZAPI_HANDLER_ARGS) = {
bf094f69
QY		 3656 [ZEBRA_ROUTER_ID_ADD] = zread_router_id_add,
3657 [ZEBRA_ROUTER_ID_DELETE] = zread_router_id_delete,
3658 [ZEBRA_INTERFACE_ADD] = zread_interface_add,
3659 [ZEBRA_INTERFACE_DELETE] = zread_interface_delete,
c3bd894e 3660 [ZEBRA_INTERFACE_SET_PROTODOWN] = zread_interface_set_protodown,
bf094f69
QY		 3661 [ZEBRA_ROUTE_ADD] = zread_route_add,
3662 [ZEBRA_ROUTE_DELETE] = zread_route_del,
bf094f69
QY		 3663 [ZEBRA_REDISTRIBUTE_ADD] = zebra_redistribute_add,
3664 [ZEBRA_REDISTRIBUTE_DELETE] = zebra_redistribute_delete,
3665 [ZEBRA_REDISTRIBUTE_DEFAULT_ADD] = zebra_redistribute_default_add,
3666 [ZEBRA_REDISTRIBUTE_DEFAULT_DELETE] = zebra_redistribute_default_delete,
3667 [ZEBRA_IPV4_NEXTHOP_LOOKUP_MRIB] = zread_ipv4_nexthop_lookup_mrib,
3668 [ZEBRA_HELLO] = zread_hello,
3669 [ZEBRA_NEXTHOP_REGISTER] = zread_rnh_register,
3670 [ZEBRA_NEXTHOP_UNREGISTER] = zread_rnh_unregister,
bf094f69
QY		 3671 [ZEBRA_BFD_DEST_UPDATE] = zebra_ptm_bfd_dst_register,
3672 [ZEBRA_BFD_DEST_REGISTER] = zebra_ptm_bfd_dst_register,
3673 [ZEBRA_BFD_DEST_DEREGISTER] = zebra_ptm_bfd_dst_deregister,
d3af6147
RZ		 3674#if HAVE_BFDD > 0
3675 [ZEBRA_BFD_DEST_REPLAY] = zebra_ptm_bfd_dst_replay,
3676#endif /* HAVE_BFDD */
bf094f69
QY		 3677 [ZEBRA_VRF_UNREGISTER] = zread_vrf_unregister,
3678 [ZEBRA_VRF_LABEL] = zread_vrf_label,
3679 [ZEBRA_BFD_CLIENT_REGISTER] = zebra_ptm_bfd_client_register,
bf094f69
QY		 3680 [ZEBRA_INTERFACE_ENABLE_RADV] = zebra_interface_radv_enable,
3681 [ZEBRA_INTERFACE_DISABLE_RADV] = zebra_interface_radv_disable,
31f937fb
SM		 3682 [ZEBRA_SR_POLICY_SET] = zread_sr_policy_set,
3683 [ZEBRA_SR_POLICY_DELETE] = zread_sr_policy_delete,
ea6b290b
RW		 3684 [ZEBRA_MPLS_LABELS_ADD] = zread_mpls_labels_add,
3685 [ZEBRA_MPLS_LABELS_DELETE] = zread_mpls_labels_delete,
3686 [ZEBRA_MPLS_LABELS_REPLACE] = zread_mpls_labels_replace,
bf094f69
QY		 3687 [ZEBRA_IPMR_ROUTE_STATS] = zebra_ipmr_route_stats,
3688 [ZEBRA_LABEL_MANAGER_CONNECT] = zread_label_manager_request,
f533be73 3689 [ZEBRA_LABEL_MANAGER_CONNECT_ASYNC] = zread_label_manager_request,
bf094f69
QY		 3690 [ZEBRA_GET_LABEL_CHUNK] = zread_label_manager_request,
3691 [ZEBRA_RELEASE_LABEL_CHUNK] = zread_label_manager_request,
3692 [ZEBRA_FEC_REGISTER] = zread_fec_register,
3693 [ZEBRA_FEC_UNREGISTER] = zread_fec_unregister,
3694 [ZEBRA_ADVERTISE_DEFAULT_GW] = zebra_vxlan_advertise_gw_macip,
278e26de 3695 [ZEBRA_ADVERTISE_SVI_MACIP] = zebra_vxlan_advertise_svi_macip,
bf094f69
QY		 3696 [ZEBRA_ADVERTISE_SUBNET] = zebra_vxlan_advertise_subnet,
3697 [ZEBRA_ADVERTISE_ALL_VNI] = zebra_vxlan_advertise_all_vni,
ce5160c0
AK		 3698 [ZEBRA_REMOTE_ES_VTEP_ADD] = zebra_evpn_proc_remote_es,
3699 [ZEBRA_REMOTE_ES_VTEP_DEL] = zebra_evpn_proc_remote_es,
7e5b0b2b
MS		 3700 [ZEBRA_REMOTE_VTEP_ADD] = zebra_vxlan_remote_vtep_add_zapi,
3701 [ZEBRA_REMOTE_VTEP_DEL] = zebra_vxlan_remote_vtep_del_zapi,
bf094f69
QY		 3702 [ZEBRA_REMOTE_MACIP_ADD] = zebra_vxlan_remote_macip_add,
3703 [ZEBRA_REMOTE_MACIP_DEL] = zebra_vxlan_remote_macip_del,
3950b52c 3704 [ZEBRA_DUPLICATE_ADDR_DETECTION] = zebra_vxlan_dup_addr_detection,
bf094f69
QY		 3705 [ZEBRA_INTERFACE_SET_MASTER] = zread_interface_set_master,
3706 [ZEBRA_PW_ADD] = zread_pseudowire,
3707 [ZEBRA_PW_DELETE] = zread_pseudowire,
3708 [ZEBRA_PW_SET] = zread_pseudowire,
3709 [ZEBRA_PW_UNSET] = zread_pseudowire,
3710 [ZEBRA_RULE_ADD] = zread_rule,
3711 [ZEBRA_RULE_DELETE] = zread_rule,
3712 [ZEBRA_TABLE_MANAGER_CONNECT] = zread_table_manager_request,
3713 [ZEBRA_GET_TABLE_CHUNK] = zread_table_manager_request,
3714 [ZEBRA_RELEASE_TABLE_CHUNK] = zread_table_manager_request,
3715 [ZEBRA_IPSET_CREATE] = zread_ipset,
3716 [ZEBRA_IPSET_DESTROY] = zread_ipset,
3717 [ZEBRA_IPSET_ENTRY_ADD] = zread_ipset_entry,
3718 [ZEBRA_IPSET_ENTRY_DELETE] = zread_ipset_entry,
3719 [ZEBRA_IPTABLE_ADD] = zread_iptable,
3720 [ZEBRA_IPTABLE_DELETE] = zread_iptable,
fbac9605 3721 [ZEBRA_VXLAN_FLOOD_CONTROL] = zebra_vxlan_flood_control,
ecbbc3a7 3722 [ZEBRA_VXLAN_SG_REPLAY] = zebra_vxlan_sg_replay,
ee235396
SK		 3723 [ZEBRA_MLAG_CLIENT_REGISTER] = zebra_mlag_client_register,
3724 [ZEBRA_MLAG_CLIENT_UNREGISTER] = zebra_mlag_client_unregister,
3725 [ZEBRA_MLAG_FORWARD_MSG] = zebra_mlag_forward_client_msg,
6e68a084
HS		 3726 [ZEBRA_SRV6_MANAGER_GET_LOCATOR_CHUNK] = zread_srv6_manager_request,
3727 [ZEBRA_SRV6_MANAGER_RELEASE_LOCATOR_CHUNK] = zread_srv6_manager_request,
d68e74b4 3728 [ZEBRA_CLIENT_CAPABILITIES] = zread_client_capabilities,
2f35a820 3729 [ZEBRA_NEIGH_DISCOVER] = zread_neigh_discover,
8b2d3a0f 3730 [ZEBRA_NHG_ADD] = zread_nhg_add,
2f35a820 3731 [ZEBRA_NHG_DEL] = zread_nhg_del,
77b38a4a 3732 [ZEBRA_ROUTE_NOTIFY_REQUEST] = zread_route_notify_request,
7bfa7d02
AK		 3733 [ZEBRA_EVPN_REMOTE_NH_ADD] = zebra_evpn_proc_remote_nh,
3734 [ZEBRA_EVPN_REMOTE_NH_DEL] = zebra_evpn_proc_remote_nh,
d603c077
PG		 3735 [ZEBRA_NEIGH_IP_ADD] = zebra_neigh_ip_add,
3736 [ZEBRA_NEIGH_IP_DEL] = zebra_neigh_ip_del,
7723e8d3
PG		 3737 [ZEBRA_NHRP_NEIGH_REGISTER] = zebra_neigh_register,
3738 [ZEBRA_NHRP_NEIGH_UNREGISTER] = zebra_neigh_unregister,
541025d6 3739 [ZEBRA_CONFIGURE_ARP] = zebra_configure_arp,
d17af8dd 3740 [ZEBRA_GRE_GET] = zebra_gre_get,
b716ab61 3741 [ZEBRA_GRE_SOURCE_SET] = zebra_gre_source_set,
2f35a820 3742};
bf094f69 3743
79b3664a
MS		 3744/*
3745 * Process a batch of zapi messages.
3746 */
3747void zserv_handle_commands(struct zserv *client, struct stream_fifo *fifo)
bf094f69 3748{
904e0d88
QY		 3749 struct zmsghdr hdr;
3750 struct zebra_vrf *zvrf;
79b3664a
MS		 3751 struct stream *msg;
3752 struct stream_fifo temp_fifo;
904e0d88 3753
79b3664a 3754 stream_fifo_init(&temp_fifo);
aa8cb964 3755
79b3664a
MS		 3756 while (stream_fifo_head(fifo)) {
3757 msg = stream_fifo_pop(fifo);
bf094f69 3758
79b3664a
MS		 3759 if (STREAM_READABLE(msg) > ZEBRA_MAX_PACKET_SIZ) {
3760 if (IS_ZEBRA_DEBUG_PACKET && IS_ZEBRA_DEBUG_RECV)
3761 zlog_debug(
3762 "ZAPI message is %zu bytes long but the maximum packet size is %u; dropping",
3763 STREAM_READABLE(msg),
3764 ZEBRA_MAX_PACKET_SIZ);
3765 goto continue_loop;
3766 }
3767
3768 zapi_parse_header(msg, &hdr);
3769
ec64a77b
DS		 3770 if (IS_ZEBRA_DEBUG_PACKET && IS_ZEBRA_DEBUG_RECV
3771 && IS_ZEBRA_DEBUG_DETAIL)
79b3664a 3772 zserv_log_message(NULL, msg, &hdr);
49b3b01f 3773
79b3664a 3774 hdr.length -= ZEBRA_HEADER_SIZE;
904e0d88 3775
79b3664a
MS		 3776 /* Before checking for a handler function, check for
3777 * special messages that are handled in another module;
3778 * we'll treat these as opaque.
3779 */
3780 if (zebra_opaque_handles_msgid(hdr.command)) {
3781 /* Reset message buffer */
3782 stream_set_getp(msg, 0);
3783
3784 stream_fifo_push(&temp_fifo, msg);
3785
3786 /* Continue without freeing the message */
3787 msg = NULL;
3788 goto continue_loop;
3789 }
3790
3791 /* lookup vrf */
3792 zvrf = zebra_vrf_lookup_by_id(hdr.vrf_id);
3793 if (!zvrf) {
3794 zserv_error_no_vrf(client, &hdr, msg, zvrf);
3795 goto continue_loop;
3796 }
3797
3798 if (hdr.command >= array_size(zserv_handlers)
3799 || zserv_handlers[hdr.command] == NULL) {
3800 zserv_error_invalid_msg_type(client, &hdr, msg, zvrf);
3801 goto continue_loop;
3802 }
3803
3804 zserv_handlers[hdr.command](client, &hdr, msg, zvrf);
3805
3806continue_loop:
3807 stream_free(msg);
3808 }
904e0d88 3809
79b3664a
MS		 3810 /* Dispatch any special messages from the temp fifo */
3811 if (stream_fifo_head(&temp_fifo) != NULL)
3812 zebra_opaque_enqueue_batch(&temp_fifo);
9ab0b2a3 3813
79b3664a 3814 stream_fifo_deinit(&temp_fifo);
bf094f69 3815}
FRRouting mirror