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Merge pull request #9018 from LabNConsulting/chopps/triage-features
[mirror_frr.git] / zebra / zapi_msg.c
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bf094f69 1/*
d8647095 2 * Zebra API message creation & consumption.
bf094f69
QY		 3 * Portions:
4 * Copyright (C) 1997-1999 Kunihiro Ishiguro
5 * Copyright (C) 2015-2018 Cumulus Networks, Inc.
6 * et al.
7 *
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of the GNU General Public License as published by the Free
10 * Software Foundation; either version 2 of the License, or (at your option)
11 * any later version.
12 *
13 * This program is distributed in the hope that it will be useful, but WITHOUT
14 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
15 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
16 * more details.
17 *
18 * You should have received a copy of the GNU General Public License along
19 * with this program; see the file COPYING; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
21 */
22
23#include <zebra.h>
24#include <libgen.h>
25
26#include "lib/prefix.h"
bf094f69
QY		 27#include "lib/stream.h"
28#include "lib/memory.h"
29#include "lib/table.h"
30#include "lib/network.h"
bf094f69
QY		 31#include "lib/log.h"
32#include "lib/zclient.h"
33#include "lib/privs.h"
bf094f69
QY		 34#include "lib/nexthop.h"
35#include "lib/vrf.h"
36#include "lib/libfrr.h"
5e7939a5 37#include "lib/lib_errors.h"
bf094f69 38
161e9ab7 39#include "zebra/zebra_router.h"
bf094f69 40#include "zebra/rib.h"
bf094f69
QY		 41#include "zebra/zebra_ns.h"
42#include "zebra/zebra_vrf.h"
43#include "zebra/router-id.h"
44#include "zebra/redistribute.h"
45#include "zebra/debug.h"
46#include "zebra/zebra_rnh.h"
bf094f69
QY		 47#include "zebra/interface.h"
48#include "zebra/zebra_ptm.h"
49#include "zebra/rtadv.h"
50#include "zebra/zebra_mpls.h"
51#include "zebra/zebra_mroute.h"
bf094f69 52#include "zebra/zebra_vxlan.h"
ce5160c0 53#include "zebra/zebra_evpn_mh.h"
bf094f69
QY		 54#include "zebra/rt.h"
55#include "zebra/zebra_pbr.h"
56#include "zebra/table_manager.h"
57#include "zebra/zapi_msg.h"
364fed6b 58#include "zebra/zebra_errors.h"
02c0866d 59#include "zebra/zebra_mlag.h"
54bea4e5 60#include "zebra/connected.h"
79b3664a 61#include "zebra/zebra_opaque.h"
31f937fb 62#include "zebra/zebra_srte.h"
6e68a084 63#include "zebra/zebra_srv6.h"
bf094f69 64
224ccf29
DL		 65DEFINE_MTYPE_STATIC(ZEBRA, OPAQUE, "Opaque Data");
66
5898ce6f
MS		 67static int zapi_nhg_decode(struct stream *s, int cmd, struct zapi_nhg *api_nhg);
68
bf094f69
QY		 69/* Encoding helpers -------------------------------------------------------- */
70
71static void zserv_encode_interface(struct stream *s, struct interface *ifp)
72{
73 /* Interface information. */
53e60e5c 74 struct zebra_if *zif = ifp->info;
19c38250 75
bf094f69
QY		 76 stream_put(s, ifp->name, INTERFACE_NAMSIZ);
77 stream_putl(s, ifp->ifindex);
78 stream_putc(s, ifp->status);
79 stream_putq(s, ifp->flags);
80 stream_putc(s, ifp->ptm_enable);
81 stream_putc(s, ifp->ptm_status);
82 stream_putl(s, ifp->metric);
83 stream_putl(s, ifp->speed);
84 stream_putl(s, ifp->mtu);
85 stream_putl(s, ifp->mtu6);
86 stream_putl(s, ifp->bandwidth);
53e60e5c 87 stream_putl(s, zif->link_ifindex);
bf094f69
QY		 88 stream_putl(s, ifp->ll_type);
89 stream_putl(s, ifp->hw_addr_len);
90 if (ifp->hw_addr_len)
91 stream_put(s, ifp->hw_addr, ifp->hw_addr_len);
92
93 /* Then, Traffic Engineering parameters if any */
94 if (HAS_LINK_PARAMS(ifp) && IS_LINK_PARAMS_SET(ifp->link_params)) {
95 stream_putc(s, 1);
96 zebra_interface_link_params_write(s, ifp);
97 } else
98 stream_putc(s, 0);
99
100 /* Write packet size. */
101 stream_putw_at(s, 0, stream_get_endp(s));
102}
103
104static void zserv_encode_vrf(struct stream *s, struct zebra_vrf *zvrf)
105{
106 struct vrf_data data;
107 const char *netns_name = zvrf_ns_name(zvrf);
108
a013777a 109 memset(&data, 0, sizeof(data));
bf094f69
QY		 110 data.l.table_id = zvrf->table_id;
111
112 if (netns_name)
113 strlcpy(data.l.netns_name, basename((char *)netns_name),
114 NS_NAMSIZ);
115 else
116 memset(data.l.netns_name, 0, NS_NAMSIZ);
117 /* Pass the tableid and the netns NAME */
118 stream_put(s, &data, sizeof(struct vrf_data));
119 /* Interface information. */
120 stream_put(s, zvrf_name(zvrf), VRF_NAMSIZ);
121 /* Write packet size. */
122 stream_putw_at(s, 0, stream_get_endp(s));
123}
124
125static int zserv_encode_nexthop(struct stream *s, struct nexthop *nexthop)
126{
a756969d 127 stream_putl(s, nexthop->vrf_id);
bf094f69
QY		 128 stream_putc(s, nexthop->type);
129 switch (nexthop->type) {
130 case NEXTHOP_TYPE_IPV4:
131 case NEXTHOP_TYPE_IPV4_IFINDEX:
132 stream_put_in_addr(s, &nexthop->gate.ipv4);
133 stream_putl(s, nexthop->ifindex);
134 break;
135 case NEXTHOP_TYPE_IPV6:
136 stream_put(s, &nexthop->gate.ipv6, 16);
137 break;
138 case NEXTHOP_TYPE_IPV6_IFINDEX:
139 stream_put(s, &nexthop->gate.ipv6, 16);
140 stream_putl(s, nexthop->ifindex);
141 break;
142 case NEXTHOP_TYPE_IFINDEX:
143 stream_putl(s, nexthop->ifindex);
144 break;
145 default:
146 /* do nothing */
147 break;
148 }
149 return 1;
150}
151
9ab0b2a3
SW		 152/*
153 * Zebra error addition adds error type.
154 *
155 *
156 * 0 1
157 * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6
158 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
159 * | enum zebra_error_types |
160 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
161 *
162 */
163static void zserv_encode_error(struct stream *s, enum zebra_error_types error)
164{
165 stream_put(s, &error, sizeof(error));
166
167 /* Write packet size. */
168 stream_putw_at(s, 0, stream_get_endp(s));
169}
170
bf094f69
QY		 171/* Send handlers ----------------------------------------------------------- */
172
173/* Interface is added. Send ZEBRA_INTERFACE_ADD to client. */
174/*
175 * This function is called in the following situations:
176 * - in response to a 3-byte ZEBRA_INTERFACE_ADD request
177 * from the client.
178 * - at startup, when zebra figures out the available interfaces
179 * - when an interface is added (where support for
180 * RTM_IFANNOUNCE or AF_NETLINK sockets is available), or when
181 * an interface is marked IFF_UP (i.e., an RTM_IFINFO message is
182 * received)
183 */
184int zsend_interface_add(struct zserv *client, struct interface *ifp)
185{
186 struct stream *s = stream_new(ZEBRA_MAX_PACKET_SIZ);
187
a36898e7 188 zclient_create_header(s, ZEBRA_INTERFACE_ADD, ifp->vrf_id);
bf094f69
QY		 189 zserv_encode_interface(s, ifp);
190
191 client->ifadd_cnt++;
21ccc0cf 192 return zserv_send_message(client, s);
bf094f69
QY		 193}
194
195/* Interface deletion from zebra daemon. */
196int zsend_interface_delete(struct zserv *client, struct interface *ifp)
197{
198 struct stream *s = stream_new(ZEBRA_MAX_PACKET_SIZ);
199
a36898e7 200 zclient_create_header(s, ZEBRA_INTERFACE_DELETE, ifp->vrf_id);
bf094f69
QY		 201 zserv_encode_interface(s, ifp);
202
203 client->ifdel_cnt++;
21ccc0cf 204 return zserv_send_message(client, s);
bf094f69
QY		 205}
206
207int zsend_vrf_add(struct zserv *client, struct zebra_vrf *zvrf)
208{
209 struct stream *s = stream_new(ZEBRA_MAX_PACKET_SIZ);
210
211 zclient_create_header(s, ZEBRA_VRF_ADD, zvrf_id(zvrf));
212 zserv_encode_vrf(s, zvrf);
213
214 client->vrfadd_cnt++;
21ccc0cf 215 return zserv_send_message(client, s);
bf094f69
QY		 216}
217
218/* VRF deletion from zebra daemon. */
219int zsend_vrf_delete(struct zserv *client, struct zebra_vrf *zvrf)
220
221{
222 struct stream *s = stream_new(ZEBRA_MAX_PACKET_SIZ);
223
224 zclient_create_header(s, ZEBRA_VRF_DELETE, zvrf_id(zvrf));
225 zserv_encode_vrf(s, zvrf);
226
227 client->vrfdel_cnt++;
21ccc0cf 228 return zserv_send_message(client, s);
bf094f69
QY		 229}
230
231int zsend_interface_link_params(struct zserv *client, struct interface *ifp)
232{
233 struct stream *s = stream_new(ZEBRA_MAX_PACKET_SIZ);
234
bf094f69
QY		 235 if (!ifp->link_params) {
236 stream_free(s);
237 return 0;
238 }
239
a36898e7 240 zclient_create_header(s, ZEBRA_INTERFACE_LINK_PARAMS, ifp->vrf_id);
bf094f69
QY		 241
242 /* Add Interface Index */
243 stream_putl(s, ifp->ifindex);
244
245 /* Then TE Link Parameters */
246 if (zebra_interface_link_params_write(s, ifp) == 0) {
247 stream_free(s);
248 return 0;
249 }
250
251 /* Write packet size. */
252 stream_putw_at(s, 0, stream_get_endp(s));
253
21ccc0cf 254 return zserv_send_message(client, s);
bf094f69
QY		 255}
256
257/* Interface address is added/deleted. Send ZEBRA_INTERFACE_ADDRESS_ADD or
258 * ZEBRA_INTERFACE_ADDRESS_DELETE to the client.
259 *
260 * A ZEBRA_INTERFACE_ADDRESS_ADD is sent in the following situations:
261 * - in response to a 3-byte ZEBRA_INTERFACE_ADD request
262 * from the client, after the ZEBRA_INTERFACE_ADD has been
263 * sent from zebra to the client
264 * - redistribute new address info to all clients in the following situations
265 * - at startup, when zebra figures out the available interfaces
266 * - when an interface is added (where support for
267 * RTM_IFANNOUNCE or AF_NETLINK sockets is available), or when
268 * an interface is marked IFF_UP (i.e., an RTM_IFINFO message is
269 * received)
b1bd1015 270 * - for the vty commands "ip address A.B.C.D/M [<label LINE>]"
bf094f69
QY		 271 * and "no bandwidth <1-10000000>", "ipv6 address X:X::X:X/M"
272 * - when an RTM_NEWADDR message is received from the kernel,
273 *
274 * The call tree that triggers ZEBRA_INTERFACE_ADDRESS_DELETE:
275 *
276 * zsend_interface_address(DELETE)
277 * ^
278 * |
279 * zebra_interface_address_delete_update
280 * ^ ^ ^
281 * | | if_delete_update
282 * | |
283 * ip_address_uninstall connected_delete_ipv4
284 * [ipv6_addresss_uninstall] [connected_delete_ipv6]
285 * ^ ^
286 * | |
287 * | RTM_NEWADDR on routing/netlink socket
288 * |
289 * vty commands:
290 * "no ip address A.B.C.D/M [label LINE]"
b1bd1015 291 * "no ip address A.B.C.D/M"
bf094f69
QY		 292 * ["no ipv6 address X:X::X:X/M"]
293 *
294 */
295int zsend_interface_address(int cmd, struct zserv *client,
296 struct interface *ifp, struct connected *ifc)
297{
298 int blen;
299 struct prefix *p;
300 struct stream *s = stream_new(ZEBRA_MAX_PACKET_SIZ);
301
a36898e7 302 zclient_create_header(s, cmd, ifp->vrf_id);
bf094f69
QY		 303 stream_putl(s, ifp->ifindex);
304
305 /* Interface address flag. */
306 stream_putc(s, ifc->flags);
307
308 /* Prefix information. */
309 p = ifc->address;
310 stream_putc(s, p->family);
311 blen = prefix_blen(p);
312 stream_put(s, &p->u.prefix, blen);
313
314 /*
315 * XXX gnu version does not send prefixlen for
316 * ZEBRA_INTERFACE_ADDRESS_DELETE
317 * but zebra_interface_address_delete_read() in the gnu version
318 * expects to find it
319 */
320 stream_putc(s, p->prefixlen);
321
322 /* Destination. */
323 p = ifc->destination;
324 if (p)
325 stream_put(s, &p->u.prefix, blen);
326 else
327 stream_put(s, NULL, blen);
328
329 /* Write packet size. */
330 stream_putw_at(s, 0, stream_get_endp(s));
331
332 client->connected_rt_add_cnt++;
21ccc0cf 333 return zserv_send_message(client, s);
bf094f69
QY		 334}
335
336static int zsend_interface_nbr_address(int cmd, struct zserv *client,
337 struct interface *ifp,
338 struct nbr_connected *ifc)
339{
340 int blen;
341 struct stream *s = stream_new(ZEBRA_MAX_PACKET_SIZ);
342 struct prefix *p;
343
a36898e7 344 zclient_create_header(s, cmd, ifp->vrf_id);
bf094f69
QY		 345 stream_putl(s, ifp->ifindex);
346
347 /* Prefix information. */
348 p = ifc->address;
349 stream_putc(s, p->family);
350 blen = prefix_blen(p);
351 stream_put(s, &p->u.prefix, blen);
352
353 /*
354 * XXX gnu version does not send prefixlen for
355 * ZEBRA_INTERFACE_ADDRESS_DELETE
356 * but zebra_interface_address_delete_read() in the gnu version
357 * expects to find it
358 */
359 stream_putc(s, p->prefixlen);
360
361 /* Write packet size. */
362 stream_putw_at(s, 0, stream_get_endp(s));
363
21ccc0cf 364 return zserv_send_message(client, s);
bf094f69
QY		 365}
366
367/* Interface address addition. */
368static void zebra_interface_nbr_address_add_update(struct interface *ifp,
369 struct nbr_connected *ifc)
370{
371 struct listnode *node, *nnode;
372 struct zserv *client;
373 struct prefix *p;
374
375 if (IS_ZEBRA_DEBUG_EVENT) {
376 char buf[INET6_ADDRSTRLEN];
377
378 p = ifc->address;
379 zlog_debug(
380 "MESSAGE: ZEBRA_INTERFACE_NBR_ADDRESS_ADD %s/%d on %s",
381 inet_ntop(p->family, &p->u.prefix, buf,
382 INET6_ADDRSTRLEN),
383 p->prefixlen, ifc->ifp->name);
384 }
385
17da84a4
KS		 386 for (ALL_LIST_ELEMENTS(zrouter.client_list, node, nnode, client)) {
387 /* Do not send unsolicited messages to synchronous clients. */
388 if (client->synchronous)
389 continue;
390
bf094f69
QY		 391 zsend_interface_nbr_address(ZEBRA_INTERFACE_NBR_ADDRESS_ADD,
392 client, ifp, ifc);
17da84a4 393 }
bf094f69
QY		 394}
395
396/* Interface address deletion. */
397static void zebra_interface_nbr_address_delete_update(struct interface *ifp,
398 struct nbr_connected *ifc)
399{
400 struct listnode *node, *nnode;
401 struct zserv *client;
402 struct prefix *p;
403
404 if (IS_ZEBRA_DEBUG_EVENT) {
405 char buf[INET6_ADDRSTRLEN];
406
407 p = ifc->address;
408 zlog_debug(
409 "MESSAGE: ZEBRA_INTERFACE_NBR_ADDRESS_DELETE %s/%d on %s",
410 inet_ntop(p->family, &p->u.prefix, buf,
411 INET6_ADDRSTRLEN),
412 p->prefixlen, ifc->ifp->name);
413 }
414
17da84a4
KS		 415 for (ALL_LIST_ELEMENTS(zrouter.client_list, node, nnode, client)) {
416 /* Do not send unsolicited messages to synchronous clients. */
417 if (client->synchronous)
418 continue;
419
bf094f69
QY		 420 zsend_interface_nbr_address(ZEBRA_INTERFACE_NBR_ADDRESS_DELETE,
421 client, ifp, ifc);
17da84a4 422 }
bf094f69
QY		 423}
424
425/* Send addresses on interface to client */
426int zsend_interface_addresses(struct zserv *client, struct interface *ifp)
427{
428 struct listnode *cnode, *cnnode;
429 struct connected *c;
430 struct nbr_connected *nc;
431
432 /* Send interface addresses. */
433 for (ALL_LIST_ELEMENTS(ifp->connected, cnode, cnnode, c)) {
434 if (!CHECK_FLAG(c->conf, ZEBRA_IFC_REAL))
435 continue;
436
437 if (zsend_interface_address(ZEBRA_INTERFACE_ADDRESS_ADD, client,
438 ifp, c)
439 < 0)
440 return -1;
441 }
442
443 /* Send interface neighbors. */
444 for (ALL_LIST_ELEMENTS(ifp->nbr_connected, cnode, cnnode, nc)) {
445 if (zsend_interface_nbr_address(ZEBRA_INTERFACE_NBR_ADDRESS_ADD,
446 client, ifp, nc)
447 < 0)
448 return -1;
449 }
450
451 return 0;
452}
453
454/* Notify client about interface moving from one VRF to another.
455 * Whether client is interested in old and new VRF is checked by caller.
456 */
457int zsend_interface_vrf_update(struct zserv *client, struct interface *ifp,
458 vrf_id_t vrf_id)
459{
460 struct stream *s = stream_new(ZEBRA_MAX_PACKET_SIZ);
461
a36898e7 462 zclient_create_header(s, ZEBRA_INTERFACE_VRF_UPDATE, ifp->vrf_id);
bf094f69 463
91d227b7
RW		 464 /* Fill in the name of the interface and its new VRF (id) */
465 stream_put(s, ifp->name, INTERFACE_NAMSIZ);
bf094f69
QY		 466 stream_putl(s, vrf_id);
467
468 /* Write packet size. */
469 stream_putw_at(s, 0, stream_get_endp(s));
470
471 client->if_vrfchg_cnt++;
21ccc0cf 472 return zserv_send_message(client, s);
bf094f69
QY		 473}
474
475/* Add new nbr connected IPv6 address */
476void nbr_connected_add_ipv6(struct interface *ifp, struct in6_addr *address)
477{
478 struct nbr_connected *ifc;
479 struct prefix p;
480
481 p.family = AF_INET6;
a85297a7 482 IPV6_ADDR_COPY(&p.u.prefix6, address);
f4d81e55 483 p.prefixlen = IPV6_MAX_BITLEN;
bf094f69 484
8b1766b1
QY		 485 ifc = listnode_head(ifp->nbr_connected);
486 if (!ifc) {
bf094f69
QY		 487 /* new addition */
488 ifc = nbr_connected_new();
489 ifc->address = prefix_new();
490 ifc->ifp = ifp;
491 listnode_add(ifp->nbr_connected, ifc);
492 }
493
494 prefix_copy(ifc->address, &p);
495
496 zebra_interface_nbr_address_add_update(ifp, ifc);
497
498 if_nbr_ipv6ll_to_ipv4ll_neigh_update(ifp, address, 1);
499}
500
501void nbr_connected_delete_ipv6(struct interface *ifp, struct in6_addr *address)
502{
503 struct nbr_connected *ifc;
504 struct prefix p;
505
506 p.family = AF_INET6;
a85297a7 507 IPV6_ADDR_COPY(&p.u.prefix6, address);
f4d81e55 508 p.prefixlen = IPV6_MAX_BITLEN;
bf094f69
QY		 509
510 ifc = nbr_connected_check(ifp, &p);
511 if (!ifc)
512 return;
513
514 listnode_delete(ifp->nbr_connected, ifc);
515
516 zebra_interface_nbr_address_delete_update(ifp, ifc);
517
518 if_nbr_ipv6ll_to_ipv4ll_neigh_update(ifp, address, 0);
519
520 nbr_connected_free(ifc);
521}
522
523/*
524 * The cmd passed to zsend_interface_update may be ZEBRA_INTERFACE_UP or
525 * ZEBRA_INTERFACE_DOWN.
526 *
527 * The ZEBRA_INTERFACE_UP message is sent from the zebra server to
528 * the clients in one of 2 situations:
529 * - an if_up is detected e.g., as a result of an RTM_IFINFO message
530 * - a vty command modifying the bandwidth of an interface is received.
531 * The ZEBRA_INTERFACE_DOWN message is sent when an if_down is detected.
532 */
533int zsend_interface_update(int cmd, struct zserv *client, struct interface *ifp)
534{
535 struct stream *s = stream_new(ZEBRA_MAX_PACKET_SIZ);
536
a36898e7 537 zclient_create_header(s, cmd, ifp->vrf_id);
bf094f69
QY		 538 zserv_encode_interface(s, ifp);
539
540 if (cmd == ZEBRA_INTERFACE_UP)
541 client->ifup_cnt++;
542 else
543 client->ifdown_cnt++;
544
21ccc0cf 545 return zserv_send_message(client, s);
bf094f69
QY		 546}
547
86391e56
MS		 548int zsend_redistribute_route(int cmd, struct zserv *client,
549 const struct prefix *p,
40f321c0
MS		 550 const struct prefix *src_p,
551 const struct route_entry *re)
bf094f69
QY		 552{
553 struct zapi_route api;
554 struct zapi_nexthop *api_nh;
555 struct nexthop *nexthop;
9a0d4dd3 556 uint8_t count = 0;
34fa0870 557 afi_t afi;
f3f45626
DS		 558 size_t stream_size =
559 MAX(ZEBRA_MAX_PACKET_SIZ, sizeof(struct zapi_route));
bf094f69
QY		 560
561 memset(&api, 0, sizeof(api));
562 api.vrf_id = re->vrf_id;
563 api.type = re->type;
e4081c0e 564 api.safi = SAFI_UNICAST;
bf094f69
QY		 565 api.instance = re->instance;
566 api.flags = re->flags;
567
34fa0870
DS		 568 afi = family2afi(p->family);
569 switch (afi) {
570 case AFI_IP:
571 if (cmd == ZEBRA_REDISTRIBUTE_ROUTE_ADD)
572 client->redist_v4_add_cnt++;
573 else
574 client->redist_v4_del_cnt++;
575 break;
576 case AFI_IP6:
577 if (cmd == ZEBRA_REDISTRIBUTE_ROUTE_ADD)
578 client->redist_v6_add_cnt++;
579 else
580 client->redist_v6_del_cnt++;
581 break;
582 default:
583 break;
584 }
585
bf094f69
QY		 586 /* Prefix. */
587 api.prefix = *p;
588 if (src_p) {
589 SET_FLAG(api.message, ZAPI_MESSAGE_SRCPFX);
590 memcpy(&api.src_prefix, src_p, sizeof(api.src_prefix));
591 }
592
c415d895 593 for (nexthop = re->nhe->nhg.nexthop;
0eb97b86 594 nexthop; nexthop = nexthop->next) {
bf094f69
QY		 595 if (!CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE))
596 continue;
597
598 api_nh = &api.nexthops[count];
599 api_nh->vrf_id = nexthop->vrf_id;
600 api_nh->type = nexthop->type;
bd054c1a 601 api_nh->weight = nexthop->weight;
bf094f69
QY		 602 switch (nexthop->type) {
603 case NEXTHOP_TYPE_BLACKHOLE:
604 api_nh->bh_type = nexthop->bh_type;
605 break;
606 case NEXTHOP_TYPE_IPV4:
607 api_nh->gate.ipv4 = nexthop->gate.ipv4;
608 break;
609 case NEXTHOP_TYPE_IPV4_IFINDEX:
610 api_nh->gate.ipv4 = nexthop->gate.ipv4;
611 api_nh->ifindex = nexthop->ifindex;
612 break;
613 case NEXTHOP_TYPE_IFINDEX:
614 api_nh->ifindex = nexthop->ifindex;
615 break;
616 case NEXTHOP_TYPE_IPV6:
617 api_nh->gate.ipv6 = nexthop->gate.ipv6;
618 break;
619 case NEXTHOP_TYPE_IPV6_IFINDEX:
620 api_nh->gate.ipv6 = nexthop->gate.ipv6;
621 api_nh->ifindex = nexthop->ifindex;
622 }
623 count++;
624 }
625
9a0d4dd3
DS		 626 /* Nexthops. */
627 if (count) {
628 SET_FLAG(api.message, ZAPI_MESSAGE_NEXTHOP);
629 api.nexthop_num = count;
630 }
631
bf094f69
QY		 632 /* Attributes. */
633 SET_FLAG(api.message, ZAPI_MESSAGE_DISTANCE);
634 api.distance = re->distance;
635 SET_FLAG(api.message, ZAPI_MESSAGE_METRIC);
636 api.metric = re->metric;
637 if (re->tag) {
638 SET_FLAG(api.message, ZAPI_MESSAGE_TAG);
639 api.tag = re->tag;
640 }
641 SET_FLAG(api.message, ZAPI_MESSAGE_MTU);
642 api.mtu = re->mtu;
643
f3f45626 644 struct stream *s = stream_new(stream_size);
bf094f69
QY		 645
646 /* Encode route and send. */
647 if (zapi_route_encode(cmd, s, &api) < 0) {
648 stream_free(s);
649 return -1;
650 }
651
2dbe669b
DA		 652 if (IS_ZEBRA_DEBUG_SEND)
653 zlog_debug("%s: %s to client %s: type %s, vrf_id %d, p %pFX",
bf094f69
QY		 654 __func__, zserv_command_string(cmd),
655 zebra_route_string(client->proto),
656 zebra_route_string(api.type), api.vrf_id,
2dbe669b 657 &api.prefix);
21ccc0cf 658 return zserv_send_message(client, s);
bf094f69
QY		 659}
660
661/*
662 * Modified version of zsend_ipv4_nexthop_lookup(): Query unicast rib if
663 * nexthop is not found on mrib. Returns both route metric and protocol
664 * distance.
665 */
666static int zsend_ipv4_nexthop_lookup_mrib(struct zserv *client,
667 struct in_addr addr,
668 struct route_entry *re,
669 struct zebra_vrf *zvrf)
670{
671 struct stream *s;
672 unsigned long nump;
673 uint8_t num;
674 struct nexthop *nexthop;
675
676 /* Get output stream. */
677 s = stream_new(ZEBRA_MAX_PACKET_SIZ);
678 stream_reset(s);
679
680 /* Fill in result. */
681 zclient_create_header(s, ZEBRA_IPV4_NEXTHOP_LOOKUP_MRIB, zvrf_id(zvrf));
682 stream_put_in_addr(s, &addr);
683
684 if (re) {
685 stream_putc(s, re->distance);
686 stream_putl(s, re->metric);
687 num = 0;
8b1766b1
QY		 688 /* remember position for nexthop_num */
689 nump = stream_get_endp(s);
690 /* reserve room for nexthop_num */
691 stream_putc(s, 0);
692 /*
693 * Only non-recursive routes are elegible to resolve the
694 * nexthop we are looking up. Therefore, we will just iterate
695 * over the top chain of nexthops.
696 */
c415d895 697 for (nexthop = re->nhe->nhg.nexthop; nexthop;
6b468511 698 nexthop = nexthop->next)
bf094f69
QY		 699 if (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE))
700 num += zserv_encode_nexthop(s, nexthop);
701
8b1766b1
QY		 702 /* store nexthop_num */
703 stream_putc_at(s, nump, num);
bf094f69
QY		 704 } else {
705 stream_putc(s, 0); /* distance */
706 stream_putl(s, 0); /* metric */
707 stream_putc(s, 0); /* nexthop_num */
708 }
709
710 stream_putw_at(s, 0, stream_get_endp(s));
711
21ccc0cf 712 return zserv_send_message(client, s);
bf094f69
QY		 713}
714
ee94437e
MS		 715int zsend_nhg_notify(uint16_t type, uint16_t instance, uint32_t session_id,
716 uint32_t id, enum zapi_nhg_notify_owner note)
2f35a820
DS		 717{
718 struct zserv *client;
719 struct stream *s;
720
ee94437e 721 client = zserv_find_client_session(type, instance, session_id);
2f35a820
DS		 722 if (!client) {
723 if (IS_ZEBRA_DEBUG_PACKET) {
724 zlog_debug("Not Notifying Owner: %u(%u) about %u(%d)",
725 type, instance, id, note);
726 }
727 return 0;
728 }
729
ee94437e 730 if (IS_ZEBRA_DEBUG_SEND)
04bec7b2
MS		 731 zlog_debug("%s: type %d, id %d, note %s",
732 __func__, type, id, zapi_nhg_notify_owner2str(note));
ee94437e 733
2f35a820
DS		 734 s = stream_new(ZEBRA_MAX_PACKET_SIZ);
735 stream_reset(s);
736
737 zclient_create_header(s, ZEBRA_NHG_NOTIFY_OWNER, VRF_DEFAULT);
738
2f35a820 739 stream_put(s, &note, sizeof(note));
2c7819b9 740 stream_putl(s, id);
2f35a820
DS		 741
742 stream_putw_at(s, 0, stream_get_endp(s));
743
744 return zserv_send_message(client, s);
745}
746
86391e56
MS		 747/*
748 * Common utility send route notification, called from a path using a
749 * route_entry and from a path using a dataplane context.
750 */
751static int route_notify_internal(const struct prefix *p, int type,
752 uint16_t instance, vrf_id_t vrf_id,
753 uint32_t table_id,
77b38a4a
S		 754 enum zapi_route_notify_owner note,
755 afi_t afi, safi_t safi)
bf094f69
QY		 756{
757 struct zserv *client;
758 struct stream *s;
759 uint8_t blen;
760
86391e56 761 client = zserv_find_client(type, instance);
bf094f69 762 if (!client || !client->notify_owner) {
2dbe669b 763 if (IS_ZEBRA_DEBUG_PACKET)
bf094f69 764 zlog_debug(
2dbe669b
DA		 765 "Not Notifying Owner: %s about prefix %pFX(%u) %d vrf: %u",
766 zebra_route_string(type), p, table_id, note,
767 vrf_id);
bf094f69
QY		 768 return 0;
769 }
770
2dbe669b
DA		 771 if (IS_ZEBRA_DEBUG_PACKET)
772 zlog_debug(
773 "Notifying Owner: %s about prefix %pFX(%u) %d vrf: %u",
774 zebra_route_string(type), p, table_id, note, vrf_id);
bf094f69 775
55e74ca9
MS		 776 /* We're just allocating a small-ish buffer here, since we only
777 * encode a small amount of data.
778 */
779 s = stream_new(ZEBRA_SMALL_PACKET_SIZE);
780
bf094f69
QY		 781 stream_reset(s);
782
86391e56 783 zclient_create_header(s, ZEBRA_ROUTE_NOTIFY_OWNER, vrf_id);
bf094f69
QY		 784
785 stream_put(s, &note, sizeof(note));
786
787 stream_putc(s, p->family);
788
789 blen = prefix_blen(p);
790 stream_putc(s, p->prefixlen);
791 stream_put(s, &p->u.prefix, blen);
792
86391e56 793 stream_putl(s, table_id);
bf094f69 794
77b38a4a
S		 795 /* Encode AFI, SAFI in the message */
796 stream_putc(s, afi);
797 stream_putc(s, safi);
798
bf094f69
QY		 799 stream_putw_at(s, 0, stream_get_endp(s));
800
21ccc0cf 801 return zserv_send_message(client, s);
bf094f69
QY		 802}
803
86391e56 804int zsend_route_notify_owner(struct route_entry *re, const struct prefix *p,
77b38a4a
S		 805 enum zapi_route_notify_owner note,
806 afi_t afi, safi_t safi)
86391e56
MS		 807{
808 return (route_notify_internal(p, re->type, re->instance, re->vrf_id,
77b38a4a 809 re->table, note, afi, safi));
86391e56
MS		 810}
811
7cdb1a84
MS		 812/*
813 * Route-owner notification using info from dataplane update context.
814 */
25779064 815int zsend_route_notify_owner_ctx(const struct zebra_dplane_ctx *ctx,
7cdb1a84
MS		 816 enum zapi_route_notify_owner note)
817{
818 return (route_notify_internal(dplane_ctx_get_dest(ctx),
819 dplane_ctx_get_type(ctx),
820 dplane_ctx_get_instance(ctx),
821 dplane_ctx_get_vrf(ctx),
822 dplane_ctx_get_table(ctx),
77b38a4a
S		 823 note,
824 dplane_ctx_get_afi(ctx),
825 dplane_ctx_get_safi(ctx)));
826}
827
828static void zread_route_notify_request(ZAPI_HANDLER_ARGS)
829{
830 uint8_t notify;
831
832 STREAM_GETC(msg, notify);
833 client->notify_owner = notify;
834stream_failure:
835 return;
86391e56
MS		 836}
837
f62e5480 838void zsend_rule_notify_owner(const struct zebra_dplane_ctx *ctx,
bf094f69
QY		 839 enum zapi_rule_notify_owner note)
840{
841 struct listnode *node;
842 struct zserv *client;
843 struct stream *s;
844
845 if (IS_ZEBRA_DEBUG_PACKET)
f62e5480
JU		 846 zlog_debug("%s: Notifying %u", __func__,
847 dplane_ctx_rule_get_unique(ctx));
bf094f69 848
161e9ab7 849 for (ALL_LIST_ELEMENTS_RO(zrouter.client_list, node, client)) {
f62e5480 850 if (dplane_ctx_rule_get_sock(ctx) == client->sock)
bf094f69
QY		 851 break;
852 }
853
854 if (!client)
855 return;
856
857 s = stream_new(ZEBRA_MAX_PACKET_SIZ);
858
859 zclient_create_header(s, ZEBRA_RULE_NOTIFY_OWNER, VRF_DEFAULT);
860 stream_put(s, &note, sizeof(note));
f62e5480
JU		 861 stream_putl(s, dplane_ctx_rule_get_seq(ctx));
862 stream_putl(s, dplane_ctx_rule_get_priority(ctx));
863 stream_putl(s, dplane_ctx_rule_get_unique(ctx));
58a1d249 864 stream_put(s, dplane_ctx_rule_get_ifname(ctx), INTERFACE_NAMSIZ);
bf094f69
QY		 865
866 stream_putw_at(s, 0, stream_get_endp(s));
867
21ccc0cf 868 zserv_send_message(client, s);
bf094f69
QY		 869}
870
ef524230
PG		 871void zsend_iptable_notify_owner(const struct zebra_dplane_ctx *ctx,
872 uint16_t note)
bf094f69
QY		 873{
874 struct listnode *node;
875 struct zserv *client;
876 struct stream *s;
ef524230
PG		 877 struct zebra_pbr_iptable ipt;
878 uint16_t cmd = ZEBRA_IPTABLE_NOTIFY_OWNER;
879
880 if (!dplane_ctx_get_pbr_iptable(ctx, &ipt))
881 return;
bf094f69
QY		 882
883 if (IS_ZEBRA_DEBUG_PACKET)
ef524230
PG		 884 zlog_debug("%s: Notifying %s id %u note %u", __func__,
885 zserv_command_string(cmd), ipt.unique, note);
bf094f69 886
161e9ab7 887 for (ALL_LIST_ELEMENTS_RO(zrouter.client_list, node, client)) {
ef524230 888 if (ipt.sock == client->sock)
bf094f69
QY		 889 break;
890 }
891
892 if (!client)
893 return;
894
895 s = stream_new(ZEBRA_MAX_PACKET_SIZ);
896
5162e000 897 zclient_create_header(s, cmd, VRF_DEFAULT);
bf094f69 898 stream_put(s, &note, sizeof(note));
ef524230
PG		 899 stream_putl(s, ipt.unique);
900 stream_put(s, ipt.ipset_name, ZEBRA_IPSET_NAME_SIZE);
bf094f69
QY		 901 stream_putw_at(s, 0, stream_get_endp(s));
902
21ccc0cf 903 zserv_send_message(client, s);
bf094f69
QY		 904}
905
ef524230 906void zsend_ipset_notify_owner(const struct zebra_dplane_ctx *ctx, uint16_t note)
bf094f69
QY		 907{
908 struct listnode *node;
909 struct zserv *client;
910 struct stream *s;
ef524230
PG		 911 struct zebra_pbr_ipset ipset;
912 uint16_t cmd = ZEBRA_IPSET_NOTIFY_OWNER;
913
914 if (!dplane_ctx_get_pbr_ipset(ctx, &ipset))
915 return;
bf094f69
QY		 916
917 if (IS_ZEBRA_DEBUG_PACKET)
ef524230
PG		 918 zlog_debug("%s: Notifying %s id %u note %u", __func__,
919 zserv_command_string(cmd), ipset.unique, note);
bf094f69 920
161e9ab7 921 for (ALL_LIST_ELEMENTS_RO(zrouter.client_list, node, client)) {
ef524230 922 if (ipset.sock == client->sock)
bf094f69
QY		 923 break;
924 }
925
926 if (!client)
927 return;
928
929 s = stream_new(ZEBRA_MAX_PACKET_SIZ);
930
ef524230 931 zclient_create_header(s, cmd, VRF_DEFAULT);
bf094f69 932 stream_put(s, &note, sizeof(note));
ef524230
PG		 933 stream_putl(s, ipset.unique);
934 stream_put(s, ipset.ipset_name, ZEBRA_IPSET_NAME_SIZE);
bf094f69
QY		 935 stream_putw_at(s, 0, stream_get_endp(s));
936
21ccc0cf 937 zserv_send_message(client, s);
bf094f69
QY		 938}
939
ef524230
PG		 940void zsend_ipset_entry_notify_owner(const struct zebra_dplane_ctx *ctx,
941 uint16_t note)
bf094f69
QY		 942{
943 struct listnode *node;
944 struct zserv *client;
945 struct stream *s;
ef524230
PG		 946 struct zebra_pbr_ipset_entry ipent;
947 struct zebra_pbr_ipset ipset;
948 uint16_t cmd = ZEBRA_IPSET_ENTRY_NOTIFY_OWNER;
5162e000 949
ef524230
PG		 950 if (!dplane_ctx_get_pbr_ipset_entry(ctx, &ipent))
951 return;
952 if (!dplane_ctx_get_pbr_ipset(ctx, &ipset))
5162e000 953 return;
bf094f69
QY		 954
955 if (IS_ZEBRA_DEBUG_PACKET)
5162e000 956 zlog_debug("%s: Notifying %s id %u note %u", __func__,
ef524230 957 zserv_command_string(cmd), ipent.unique, note);
bf094f69 958
161e9ab7 959 for (ALL_LIST_ELEMENTS_RO(zrouter.client_list, node, client)) {
ef524230 960 if (ipent.sock == client->sock)
bf094f69
QY		 961 break;
962 }
963
964 if (!client)
965 return;
966
967 s = stream_new(ZEBRA_MAX_PACKET_SIZ);
968
5162e000 969 zclient_create_header(s, cmd, VRF_DEFAULT);
bf094f69 970 stream_put(s, &note, sizeof(note));
ef524230
PG		 971 stream_putl(s, ipent.unique);
972 stream_put(s, ipset.ipset_name, ZEBRA_IPSET_NAME_SIZE);
bf094f69
QY		 973 stream_putw_at(s, 0, stream_get_endp(s));
974
21ccc0cf 975 zserv_send_message(client, s);
bf094f69
QY		 976}
977
7723e8d3
PG		 978void zsend_nhrp_neighbor_notify(int cmd, struct interface *ifp,
979 struct ipaddr *ipaddr, int ndm_state,
d603c077 980 union sockunion *link_layer_ipv4)
7723e8d3
PG		 981{
982 struct stream *s;
983 struct listnode *node, *nnode;
984 struct zserv *client;
985 afi_t afi;
d603c077 986 union sockunion ip;
7723e8d3
PG		 987
988 if (IS_ZEBRA_DEBUG_PACKET)
7d7be47e 989 zlog_debug("%s: Notifying Neighbor entry (%u)", __func__, cmd);
7723e8d3 990
d603c077
PG		 991 sockunion_family(&ip) = ipaddr_family(ipaddr);
992 afi = family2afi(sockunion_family(&ip));
993 memcpy((char *)sockunion_get_addr(&ip), &ipaddr->ip.addr,
994 family2addrsize(sockunion_family(&ip)));
995
7723e8d3
PG		 996 for (ALL_LIST_ELEMENTS(zrouter.client_list, node, nnode, client)) {
997 if (!vrf_bitmap_check(client->nhrp_neighinfo[afi], ifp->vrf_id))
998 continue;
999
1000 s = stream_new(ZEBRA_MAX_PACKET_SIZ);
d603c077 1001 zclient_neigh_ip_encode(s, cmd, &ip, link_layer_ipv4, ifp);
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
1140/* Inbound message handling ------------------------------------------------ */
1141
2b64873d 1142const int cmd2type[] = {
bf094f69
QY		 1143 [ZEBRA_NEXTHOP_REGISTER] = RNH_NEXTHOP_TYPE,
1144 [ZEBRA_NEXTHOP_UNREGISTER] = RNH_NEXTHOP_TYPE,
1145 [ZEBRA_IMPORT_ROUTE_REGISTER] = RNH_IMPORT_CHECK_TYPE,
1146 [ZEBRA_IMPORT_ROUTE_UNREGISTER] = RNH_IMPORT_CHECK_TYPE,
1147};
1148
1149/* Nexthop register */
1150static void zread_rnh_register(ZAPI_HANDLER_ARGS)
1151{
1152 struct rnh *rnh;
1153 struct stream *s;
1154 struct prefix p;
1155 unsigned short l = 0;
1156 uint8_t flags = 0;
1157 uint16_t type = cmd2type[hdr->command];
1d30d1f4 1158 bool exist;
906b54dd
DS		 1159 bool flag_changed = false;
1160 uint8_t orig_flags;
bf094f69
QY		 1161
1162 if (IS_ZEBRA_DEBUG_NHT)
1163 zlog_debug(
63efca0e 1164 "rnh_register msg from client %s: hdr->length=%d, type=%s vrf=%u",
bf094f69
QY		 1165 zebra_route_string(client->proto), hdr->length,
1166 (type == RNH_NEXTHOP_TYPE) ? "nexthop" : "route",
1167 zvrf->vrf->vrf_id);
1168
1169 s = msg;
1170
469d6277
DS		 1171 if (!client->nh_reg_time)
1172 client->nh_reg_time = monotime(NULL);
bf094f69
QY		 1173
1174 while (l < hdr->length) {
1175 STREAM_GETC(s, flags);
1176 STREAM_GETW(s, p.family);
1177 STREAM_GETC(s, p.prefixlen);
1178 l += 4;
1179 if (p.family == AF_INET) {
ab5990d8 1180 client->v4_nh_watch_add_cnt++;
bf094f69 1181 if (p.prefixlen > IPV4_MAX_BITLEN) {
9df414fe 1182 zlog_debug(
bf094f69 1183 "%s: Specified prefix hdr->length %d is too large for a v4 address",
15569c58 1184 __func__, p.prefixlen);
bf094f69
QY		 1185 return;
1186 }
1187 STREAM_GET(&p.u.prefix4.s_addr, s, IPV4_MAX_BYTELEN);
1188 l += IPV4_MAX_BYTELEN;
1189 } else if (p.family == AF_INET6) {
ab5990d8 1190 client->v6_nh_watch_add_cnt++;
bf094f69 1191 if (p.prefixlen > IPV6_MAX_BITLEN) {
9df414fe 1192 zlog_debug(
bf094f69 1193 "%s: Specified prefix hdr->length %d is to large for a v6 address",
15569c58 1194 __func__, p.prefixlen);
bf094f69
QY		 1195 return;
1196 }
1197 STREAM_GET(&p.u.prefix6, s, IPV6_MAX_BYTELEN);
1198 l += IPV6_MAX_BYTELEN;
1199 } else {
af4c2728 1200 flog_err(
e914ccbe 1201 EC_ZEBRA_UNKNOWN_FAMILY,
1d5453d6 1202 "rnh_register: Received unknown family type %d",
bf094f69
QY		 1203 p.family);
1204 return;
1205 }
1d30d1f4
DS		 1206 rnh = zebra_add_rnh(&p, zvrf_id(zvrf), type, &exist);
1207 if (!rnh)
1208 return;
1209
906b54dd 1210 orig_flags = rnh->flags;
bf094f69
QY		 1211 if (type == RNH_NEXTHOP_TYPE) {
1212 if (flags
1213 && !CHECK_FLAG(rnh->flags, ZEBRA_NHT_CONNECTED))
1214 SET_FLAG(rnh->flags, ZEBRA_NHT_CONNECTED);
1215 else if (!flags
1216 && CHECK_FLAG(rnh->flags, ZEBRA_NHT_CONNECTED))
1217 UNSET_FLAG(rnh->flags, ZEBRA_NHT_CONNECTED);
1218 } else if (type == RNH_IMPORT_CHECK_TYPE) {
1219 if (flags
1220 && !CHECK_FLAG(rnh->flags, ZEBRA_NHT_EXACT_MATCH))
1221 SET_FLAG(rnh->flags, ZEBRA_NHT_EXACT_MATCH);
1222 else if (!flags
1223 && CHECK_FLAG(rnh->flags,
1224 ZEBRA_NHT_EXACT_MATCH))
1225 UNSET_FLAG(rnh->flags, ZEBRA_NHT_EXACT_MATCH);
1226 }
1227
906b54dd
DS		 1228 if (orig_flags != rnh->flags)
1229 flag_changed = true;
1230
bf094f69 1231 /* Anything not AF_INET/INET6 has been filtered out above */
906b54dd 1232 if (!exist || flag_changed)
73bf60a0
RW		 1233 zebra_evaluate_rnh(zvrf, family2afi(p.family), 1, type,
1234 &p);
dd25a6b3
DS		 1235
1236 zebra_add_rnh_client(rnh, client, type, zvrf_id(zvrf));
bf094f69
QY		 1237 }
1238
1239stream_failure:
1240 return;
1241}
1242
1243/* Nexthop register */
1244static void zread_rnh_unregister(ZAPI_HANDLER_ARGS)
1245{
1246 struct rnh *rnh;
1247 struct stream *s;
1248 struct prefix p;
1249 unsigned short l = 0;
1250 uint16_t type = cmd2type[hdr->command];
1251
1252 if (IS_ZEBRA_DEBUG_NHT)
1253 zlog_debug(
63efca0e 1254 "rnh_unregister msg from client %s: hdr->length=%d vrf: %u",
bf094f69
QY		 1255 zebra_route_string(client->proto), hdr->length,
1256 zvrf->vrf->vrf_id);
1257
1258 s = msg;
1259
1260 while (l < hdr->length) {
1261 uint8_t flags;
1262
1263 STREAM_GETC(s, flags);
1264 if (flags != 0)
1265 goto stream_failure;
1266
1267 STREAM_GETW(s, p.family);
1268 STREAM_GETC(s, p.prefixlen);
1269 l += 4;
1270 if (p.family == AF_INET) {
ab5990d8 1271 client->v4_nh_watch_rem_cnt++;
bf094f69 1272 if (p.prefixlen > IPV4_MAX_BITLEN) {
9df414fe 1273 zlog_debug(
bf094f69 1274 "%s: Specified prefix hdr->length %d is to large for a v4 address",
15569c58 1275 __func__, p.prefixlen);
bf094f69
QY		 1276 return;
1277 }
1278 STREAM_GET(&p.u.prefix4.s_addr, s, IPV4_MAX_BYTELEN);
1279 l += IPV4_MAX_BYTELEN;
1280 } else if (p.family == AF_INET6) {
ab5990d8 1281 client->v6_nh_watch_rem_cnt++;
bf094f69 1282 if (p.prefixlen > IPV6_MAX_BITLEN) {
9df414fe 1283 zlog_debug(
bf094f69 1284 "%s: Specified prefix hdr->length %d is to large for a v6 address",
15569c58 1285 __func__, p.prefixlen);
bf094f69
QY		 1286 return;
1287 }
1288 STREAM_GET(&p.u.prefix6, s, IPV6_MAX_BYTELEN);
1289 l += IPV6_MAX_BYTELEN;
1290 } else {
af4c2728 1291 flog_err(
e914ccbe 1292 EC_ZEBRA_UNKNOWN_FAMILY,
1d5453d6 1293 "rnh_register: Received unknown family type %d",
bf094f69
QY		 1294 p.family);
1295 return;
1296 }
1297 rnh = zebra_lookup_rnh(&p, zvrf_id(zvrf), type);
1298 if (rnh) {
1299 client->nh_dereg_time = monotime(NULL);
1300 zebra_remove_rnh_client(rnh, client, type);
1301 }
1302 }
1303stream_failure:
1304 return;
1305}
1306
1307#define ZEBRA_MIN_FEC_LENGTH 5
1308
1309/* FEC register */
1310static void zread_fec_register(ZAPI_HANDLER_ARGS)
1311{
1312 struct stream *s;
1313 unsigned short l = 0;
1314 struct prefix p;
1315 uint16_t flags;
57592a53 1316 uint32_t label = MPLS_INVALID_LABEL;
bf094f69
QY		 1317 uint32_t label_index = MPLS_INVALID_LABEL_INDEX;
1318
1319 s = msg;
1320 zvrf = vrf_info_lookup(VRF_DEFAULT);
1321 if (!zvrf)
8b1766b1 1322 return;
bf094f69
QY		 1323
1324 /*
1325 * The minimum amount of data that can be sent for one fec
1326 * registration
1327 */
1328 if (hdr->length < ZEBRA_MIN_FEC_LENGTH) {
af4c2728 1329 flog_err(
e914ccbe 1330 EC_ZEBRA_IRDP_LEN_MISMATCH,
bf094f69
QY		 1331 "fec_register: Received a fec register of hdr->length %d, it is of insufficient size to properly decode",
1332 hdr->length);
1333 return;
1334 }
1335
1336 while (l < hdr->length) {
1337 STREAM_GETW(s, flags);
1338 memset(&p, 0, sizeof(p));
1339 STREAM_GETW(s, p.family);
1340 if (p.family != AF_INET && p.family != AF_INET6) {
af4c2728 1341 flog_err(
e914ccbe 1342 EC_ZEBRA_UNKNOWN_FAMILY,
1d5453d6 1343 "fec_register: Received unknown family type %d",
bf094f69
QY		 1344 p.family);
1345 return;
1346 }
1347 STREAM_GETC(s, p.prefixlen);
1348 if ((p.family == AF_INET && p.prefixlen > IPV4_MAX_BITLEN)
1349 || (p.family == AF_INET6
1350 && p.prefixlen > IPV6_MAX_BITLEN)) {
9df414fe 1351 zlog_debug(
bf094f69 1352 "%s: Specified prefix hdr->length: %d is to long for %d",
15569c58 1353 __func__, p.prefixlen, p.family);
bf094f69
QY		 1354 return;
1355 }
1356 l += 5;
1357 STREAM_GET(&p.u.prefix, s, PSIZE(p.prefixlen));
1358 l += PSIZE(p.prefixlen);
57592a53
AD		 1359 if (flags & ZEBRA_FEC_REGISTER_LABEL) {
1360 STREAM_GETL(s, label);
1361 l += 4;
1362 } else if (flags & ZEBRA_FEC_REGISTER_LABEL_INDEX) {
bf094f69
QY		 1363 STREAM_GETL(s, label_index);
1364 l += 4;
57592a53
AD		 1365 }
1366
1367 zebra_mpls_fec_register(zvrf, &p, label, label_index, client);
bf094f69
QY		 1368 }
1369
1370stream_failure:
1371 return;
1372}
1373
1374/* FEC unregister */
1375static void zread_fec_unregister(ZAPI_HANDLER_ARGS)
1376{
1377 struct stream *s;
1378 unsigned short l = 0;
1379 struct prefix p;
1380 uint16_t flags;
1381
1382 s = msg;
1383 zvrf = vrf_info_lookup(VRF_DEFAULT);
1384 if (!zvrf)
8b1766b1 1385 return;
bf094f69
QY		 1386
1387 /*
1388 * The minimum amount of data that can be sent for one
1389 * fec unregistration
1390 */
1391 if (hdr->length < ZEBRA_MIN_FEC_LENGTH) {
af4c2728 1392 flog_err(
e914ccbe 1393 EC_ZEBRA_IRDP_LEN_MISMATCH,
bf094f69
QY		 1394 "fec_unregister: Received a fec unregister of hdr->length %d, it is of insufficient size to properly decode",
1395 hdr->length);
1396 return;
1397 }
1398
1399 while (l < hdr->length) {
1400 STREAM_GETW(s, flags);
1401 if (flags != 0)
1402 goto stream_failure;
1403
1404 memset(&p, 0, sizeof(p));
1405 STREAM_GETW(s, p.family);
1406 if (p.family != AF_INET && p.family != AF_INET6) {
af4c2728 1407 flog_err(
e914ccbe 1408 EC_ZEBRA_UNKNOWN_FAMILY,
1d5453d6 1409 "fec_unregister: Received unknown family type %d",
bf094f69
QY		 1410 p.family);
1411 return;
1412 }
1413 STREAM_GETC(s, p.prefixlen);
1414 if ((p.family == AF_INET && p.prefixlen > IPV4_MAX_BITLEN)
1415 || (p.family == AF_INET6
1416 && p.prefixlen > IPV6_MAX_BITLEN)) {
9df414fe 1417 zlog_debug(
bf094f69 1418 "%s: Received prefix hdr->length %d which is greater than %d can support",
15569c58 1419 __func__, p.prefixlen, p.family);
bf094f69
QY		 1420 return;
1421 }
1422 l += 5;
1423 STREAM_GET(&p.u.prefix, s, PSIZE(p.prefixlen));
1424 l += PSIZE(p.prefixlen);
1425 zebra_mpls_fec_unregister(zvrf, &p, client);
1426 }
1427
1428stream_failure:
1429 return;
1430}
1431
1432
1433/*
1434 * Register zebra server interface information.
1435 * Send current all interface and address information.
1436 */
1437static void zread_interface_add(ZAPI_HANDLER_ARGS)
1438{
1439 struct vrf *vrf;
1440 struct interface *ifp;
1441
9212d1e1 1442 vrf_id_t vrf_id = zvrf_id(zvrf);
1443 if (vrf_id != VRF_DEFAULT && vrf_id != VRF_UNKNOWN) {
1444 FOR_ALL_INTERFACES (zvrf->vrf, ifp) {
1445 /* Skip pseudo interface. */
1446 if (!CHECK_FLAG(ifp->status, ZEBRA_INTERFACE_ACTIVE))
1447 continue;
1448
1449 zsend_interface_add(client, ifp);
1450 zsend_interface_link_params(client, ifp);
1451 zsend_interface_addresses(client, ifp);
1452 }
1453 return;
1454 }
1455
bf094f69
QY		 1456 RB_FOREACH (vrf, vrf_id_head, &vrfs_by_id) {
1457 FOR_ALL_INTERFACES (vrf, ifp) {
1458 /* Skip pseudo interface. */
1459 if (!CHECK_FLAG(ifp->status, ZEBRA_INTERFACE_ACTIVE))
1460 continue;
1461
1462 zsend_interface_add(client, ifp);
27ecbea3 1463 zsend_interface_link_params(client, ifp);
bf094f69
QY		 1464 zsend_interface_addresses(client, ifp);
1465 }
1466 }
1467}
1468
1469/* Unregister zebra server interface information. */
1470static void zread_interface_delete(ZAPI_HANDLER_ARGS)
1471{
bf094f69
QY		 1472}
1473
c3bd894e
QY		 1474/*
1475 * Handle message requesting interface be set up or down.
1476 */
1477static void zread_interface_set_protodown(ZAPI_HANDLER_ARGS)
1478{
1479 ifindex_t ifindex;
1480 struct interface *ifp;
1481 char down;
1482
1483 STREAM_GETL(msg, ifindex);
1484 STREAM_GETC(msg, down);
1485
1486 /* set ifdown */
1487 ifp = if_lookup_by_index_per_ns(zebra_ns_lookup(NS_DEFAULT), ifindex);
c3bd894e 1488
65dc7dd3
QY		 1489 if (ifp) {
1490 zlog_info("Setting interface %s (%u): protodown %s", ifp->name,
1491 ifindex, down ? "on" : "off");
1492 zebra_if_set_protodown(ifp, down);
1493 } else {
1494 zlog_warn(
1495 "Cannot set protodown %s for interface %u; does not exist",
1496 down ? "on" : "off", ifindex);
1497 }
1498
c3bd894e
QY		 1499
1500stream_failure:
1501 return;
1502}
1503
786a9bd9 1504bool zserv_nexthop_num_warn(const char *caller, const struct prefix *p,
bf094f69
QY		 1505 const unsigned int nexthop_num)
1506{
b3f2b590 1507 if (nexthop_num > zrouter.multipath_num) {
bf094f69 1508 char buff[PREFIX2STR_BUFFER];
8b1766b1 1509
e270f004
SW		 1510 if (p)
1511 prefix2str(p, buff, sizeof(buff));
1512
9df414fe 1513 flog_warn(
e914ccbe 1514 EC_ZEBRA_MORE_NH_THAN_MULTIPATH,
bf094f69 1515 "%s: Prefix %s has %d nexthops, but we can only use the first %d",
e270f004
SW		 1516 caller, (p ? buff : "(NULL)"), nexthop_num,
1517 zrouter.multipath_num);
786a9bd9 1518 return true;
bf094f69 1519 }
786a9bd9
DS		 1520
1521 return false;
bf094f69
QY		 1522}
1523
62e46303
MS		 1524/*
1525 * Create a new nexthop based on a zapi nexthop.
1526 */
2f35a820
DS		 1527static struct nexthop *nexthop_from_zapi(const struct zapi_nexthop *api_nh,
1528 uint32_t flags, struct prefix *p,
1529 uint16_t backup_nexthop_num)
62e46303
MS		 1530{
1531 struct nexthop *nexthop = NULL;
1532 struct ipaddr vtep_ip;
1533 struct interface *ifp;
474aebd9 1534 int i;
62e46303
MS		 1535 char nhbuf[INET6_ADDRSTRLEN] = "";
1536
62e46303
MS		 1537 switch (api_nh->type) {
1538 case NEXTHOP_TYPE_IFINDEX:
1539 nexthop = nexthop_from_ifindex(api_nh->ifindex, api_nh->vrf_id);
1540 break;
1541 case NEXTHOP_TYPE_IPV4:
1542 if (IS_ZEBRA_DEBUG_RECV) {
1543 inet_ntop(AF_INET, &api_nh->gate.ipv4, nhbuf,
1544 sizeof(nhbuf));
1545 zlog_debug("%s: nh=%s, vrf_id=%d", __func__,
1546 nhbuf, api_nh->vrf_id);
1547 }
1548 nexthop = nexthop_from_ipv4(&api_nh->gate.ipv4, NULL,
1549 api_nh->vrf_id);
1550 break;
1551 case NEXTHOP_TYPE_IPV4_IFINDEX:
1552 if (IS_ZEBRA_DEBUG_RECV) {
1553 inet_ntop(AF_INET, &api_nh->gate.ipv4, nhbuf,
1554 sizeof(nhbuf));
1555 zlog_debug("%s: nh=%s, vrf_id=%d, ifindex=%d",
1556 __func__, nhbuf, api_nh->vrf_id,
1557 api_nh->ifindex);
1558 }
1559
1560 nexthop = nexthop_from_ipv4_ifindex(
1561 &api_nh->gate.ipv4, NULL, api_nh->ifindex,
1562 api_nh->vrf_id);
1563
62e46303
MS		 1564 /* Special handling for IPv4 routes sourced from EVPN:
1565 * the nexthop and associated MAC need to be installed.
1566 */
2f35a820 1567 if (CHECK_FLAG(flags, ZEBRA_FLAG_EVPN_ROUTE)) {
62e46303
MS		 1568 memset(&vtep_ip, 0, sizeof(struct ipaddr));
1569 vtep_ip.ipa_type = IPADDR_V4;
1570 memcpy(&(vtep_ip.ipaddr_v4), &(api_nh->gate.ipv4),
1571 sizeof(struct in_addr));
1572 zebra_vxlan_evpn_vrf_route_add(
ff9aca4f 1573 api_nh->vrf_id, &api_nh->rmac, &vtep_ip, p);
62e46303
MS		 1574 }
1575 break;
1576 case NEXTHOP_TYPE_IPV6:
1577 if (IS_ZEBRA_DEBUG_RECV) {
1578 inet_ntop(AF_INET6, &api_nh->gate.ipv6, nhbuf,
1579 sizeof(nhbuf));
1580 zlog_debug("%s: nh=%s, vrf_id=%d", __func__,
1581 nhbuf, api_nh->vrf_id);
1582 }
1583 nexthop = nexthop_from_ipv6(&api_nh->gate.ipv6, api_nh->vrf_id);
1584 break;
1585 case NEXTHOP_TYPE_IPV6_IFINDEX:
1586 if (IS_ZEBRA_DEBUG_RECV) {
1587 inet_ntop(AF_INET6, &api_nh->gate.ipv6, nhbuf,
1588 sizeof(nhbuf));
1589 zlog_debug("%s: nh=%s, vrf_id=%d, ifindex=%d",
1590 __func__, nhbuf, api_nh->vrf_id,
1591 api_nh->ifindex);
1592 }
1593 nexthop = nexthop_from_ipv6_ifindex(&api_nh->gate.ipv6,
1594 api_nh->ifindex,
1595 api_nh->vrf_id);
1596
1597 /* Special handling for IPv6 routes sourced from EVPN:
1598 * the nexthop and associated MAC need to be installed.
1599 */
2f35a820 1600 if (CHECK_FLAG(flags, ZEBRA_FLAG_EVPN_ROUTE)) {
62e46303
MS		 1601 memset(&vtep_ip, 0, sizeof(struct ipaddr));
1602 vtep_ip.ipa_type = IPADDR_V6;
1603 memcpy(&vtep_ip.ipaddr_v6, &(api_nh->gate.ipv6),
1604 sizeof(struct in6_addr));
1605 zebra_vxlan_evpn_vrf_route_add(
ff9aca4f 1606 api_nh->vrf_id, &api_nh->rmac, &vtep_ip, p);
62e46303
MS		 1607 }
1608 break;
1609 case NEXTHOP_TYPE_BLACKHOLE:
1610 if (IS_ZEBRA_DEBUG_RECV)
1611 zlog_debug("%s: nh blackhole %d",
1612 __func__, api_nh->bh_type);
1613
1614 nexthop = nexthop_from_blackhole(api_nh->bh_type);
1615 break;
1616 }
1617
1618 /* Return early if we couldn't process the zapi nexthop */
1619 if (nexthop == NULL) {
1620 goto done;
1621 }
1622
12b4d77b 1623 /* Mark nexthop as onlink either if client has explicitly told us
1624 * to or if the nexthop is on an 'unnumbered' interface.
1625 */
62e46303
MS		 1626 if (CHECK_FLAG(api_nh->flags, ZAPI_NEXTHOP_FLAG_ONLINK))
1627 SET_FLAG(nexthop->flags, NEXTHOP_FLAG_ONLINK);
12b4d77b 1628 else if (api_nh->type == NEXTHOP_TYPE_IPV4_IFINDEX) {
1629 ifp = if_lookup_by_index(api_nh->ifindex, api_nh->vrf_id);
1630 if (ifp && connected_is_unnumbered(ifp))
1631 SET_FLAG(nexthop->flags, NEXTHOP_FLAG_ONLINK);
1632 }
62e46303
MS		 1633
1634 if (CHECK_FLAG(api_nh->flags, ZAPI_NEXTHOP_FLAG_WEIGHT))
1635 nexthop->weight = api_nh->weight;
1636
1d48702e 1637 if (CHECK_FLAG(api_nh->flags, ZAPI_NEXTHOP_FLAG_HAS_BACKUP)) {
474aebd9
MS		 1638 /* Validate count */
1639 if (api_nh->backup_num > NEXTHOP_MAX_BACKUPS) {
1d48702e 1640 if (IS_ZEBRA_DEBUG_RECV || IS_ZEBRA_DEBUG_EVENT)
474aebd9
MS		 1641 zlog_debug("%s: invalid backup nh count %d",
1642 __func__, api_nh->backup_num);
1643 nexthop_free(nexthop);
1644 nexthop = NULL;
1645 goto done;
1646 }
1647
1648 /* Copy backup info */
1649 SET_FLAG(nexthop->flags, NEXTHOP_FLAG_HAS_BACKUP);
1650 nexthop->backup_num = api_nh->backup_num;
1651
1652 for (i = 0; i < api_nh->backup_num; i++) {
1653 /* Validate backup index */
2f35a820 1654 if (api_nh->backup_idx[i] < backup_nexthop_num) {
474aebd9
MS		 1655 nexthop->backup_idx[i] = api_nh->backup_idx[i];
1656 } else {
1657 if (IS_ZEBRA_DEBUG_RECV || IS_ZEBRA_DEBUG_EVENT)
1658 zlog_debug("%s: invalid backup nh idx %d",
1659 __func__,
1660 api_nh->backup_idx[i]);
1661 nexthop_free(nexthop);
1662 nexthop = NULL;
1663 goto done;
1664 }
1d48702e
MS		 1665 }
1666 }
474aebd9 1667
62e46303
MS		 1668done:
1669 return nexthop;
1670}
1671
2f35a820
DS		 1672static bool zapi_read_nexthops(struct zserv *client, struct prefix *p,
1673 struct zapi_nexthop *nhops, uint32_t flags,
1674 uint32_t message, uint16_t nexthop_num,
1675 uint16_t backup_nh_num,
f70da2a3
DS		 1676 struct nexthop_group **png,
1677 struct nhg_backup_info **pbnhg)
bf094f69 1678{
0eb97b86 1679 struct nexthop_group *ng = NULL;
1d48702e 1680 struct nhg_backup_info *bnhg = NULL;
2f35a820 1681 uint16_t i;
f70da2a3 1682 struct nexthop *last_nh = NULL;
bf094f69 1683
f70da2a3 1684 assert(!(png && pbnhg));
c2c02b76 1685
2f35a820 1686 if (png)
66c28560 1687 ng = nexthop_group_new();
bf094f69 1688
2f35a820 1689 if (pbnhg && backup_nh_num > 0) {
f70da2a3 1690 if (IS_ZEBRA_DEBUG_RECV)
2f35a820
DS		 1691 zlog_debug("%s: adding %d backup nexthops", __func__,
1692 backup_nh_num);
7fcb24bb 1693
66c28560 1694 bnhg = zebra_nhg_backup_alloc();
62e46303
MS		 1695 }
1696
bf094f69
QY		 1697 /*
1698 * TBD should _all_ of the nexthop add operations use
1699 * api_nh->vrf_id instead of re->vrf_id ? I only changed
1700 * for cases NEXTHOP_TYPE_IPV4 and NEXTHOP_TYPE_IPV6.
1701 */
f70da2a3
DS		 1702 for (i = 0; i < nexthop_num; i++) {
1703 struct nexthop *nexthop;
1704 enum lsp_types_t label_type;
1705 char nhbuf[NEXTHOP_STRLEN];
1706 char labelbuf[MPLS_LABEL_STRLEN];
1707 struct zapi_nexthop *api_nh = &nhops[i];
7fcb24bb 1708
62e46303 1709 /* Convert zapi nexthop */
2f35a820 1710 nexthop = nexthop_from_zapi(api_nh, flags, p, backup_nh_num);
62e46303
MS		 1711 if (!nexthop) {
1712 flog_warn(
1713 EC_ZEBRA_NEXTHOP_CREATION_FAILED,
f70da2a3
DS		 1714 "%s: Nexthops Specified: %u(%u) but we failed to properly create one",
1715 __func__, nexthop_num, i);
1716 if (ng)
1717 nexthop_group_delete(&ng);
1718 if (bnhg)
1719 zebra_nhg_backup_free(&bnhg);
1720 return false;
62e46303 1721 }
7fcb24bb 1722
ff9aca4f
SW		 1723 if (bnhg
1724 && CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_HAS_BACKUP)) {
f70da2a3
DS		 1725 if (IS_ZEBRA_DEBUG_RECV) {
1726 nexthop2str(nexthop, nhbuf, sizeof(nhbuf));
1727 zlog_debug("%s: backup nh %s with BACKUP flag!",
1728 __func__, nhbuf);
1729 }
1730 UNSET_FLAG(nexthop->flags, NEXTHOP_FLAG_HAS_BACKUP);
1731 nexthop->backup_num = 0;
1732 }
1733
2f35a820 1734 if (CHECK_FLAG(message, ZAPI_MESSAGE_SRTE)) {
31f937fb
SM		 1735 SET_FLAG(nexthop->flags, NEXTHOP_FLAG_SRTE);
1736 nexthop->srte_color = api_nh->srte_color;
1737 }
1738
62e46303
MS		 1739 /* MPLS labels for BGP-LU or Segment Routing */
1740 if (CHECK_FLAG(api_nh->flags, ZAPI_NEXTHOP_FLAG_LABEL)
1741 && api_nh->type != NEXTHOP_TYPE_IFINDEX
1742 && api_nh->type != NEXTHOP_TYPE_BLACKHOLE
1743 && api_nh->label_num > 0) {
7fcb24bb 1744
62e46303 1745 label_type = lsp_type_from_re_type(client->proto);
62e46303
MS		 1746 nexthop_add_labels(nexthop, label_type,
1747 api_nh->label_num,
1748 &api_nh->labels[0]);
bf094f69 1749 }
bf094f69 1750
c60c1ade 1751 if (CHECK_FLAG(api_nh->flags, ZAPI_NEXTHOP_FLAG_SEG6LOCAL)
8689b25a
HS		 1752 && api_nh->type != NEXTHOP_TYPE_BLACKHOLE) {
1753 if (IS_ZEBRA_DEBUG_RECV)
1754 zlog_debug("%s: adding seg6local action %s",
1755 __func__,
1756 seg6local_action2str(
1757 api_nh->seg6local_action));
1758
eab0f8f0
HS		 1759 nexthop_add_srv6_seg6local(nexthop,
1760 api_nh->seg6local_action,
1761 &api_nh->seg6local_ctx);
8689b25a
HS		 1762 }
1763
c60c1ade 1764 if (CHECK_FLAG(api_nh->flags, ZAPI_NEXTHOP_FLAG_SEG6)
76fb7ae4
HS		 1765 && api_nh->type != NEXTHOP_TYPE_BLACKHOLE) {
1766 if (IS_ZEBRA_DEBUG_RECV)
1767 zlog_debug("%s: adding seg6", __func__);
1768
eab0f8f0 1769 nexthop_add_srv6_seg6(nexthop, &api_nh->seg6_segs);
76fb7ae4
HS		 1770 }
1771
1d48702e
MS		 1772 if (IS_ZEBRA_DEBUG_RECV) {
1773 labelbuf[0] = '\0';
1774 nhbuf[0] = '\0';
1775
1776 nexthop2str(nexthop, nhbuf, sizeof(nhbuf));
1777
1778 if (nexthop->nh_label &&
1779 nexthop->nh_label->num_labels > 0) {
1780 mpls_label2str(nexthop->nh_label->num_labels,
1781 nexthop->nh_label->label,
1782 labelbuf, sizeof(labelbuf),
1783 false);
1784 }
1785
1786 zlog_debug("%s: nh=%s, vrf_id=%d %s",
1787 __func__, nhbuf, api_nh->vrf_id, labelbuf);
1788 }
1789
66c28560 1790 if (ng) {
f70da2a3 1791 /* Add new nexthop to temporary list. This list is
ff9aca4f
SW		 1792 * canonicalized - sorted - so that it can be hashed
1793 * later in route processing. We expect that the sender
1794 * has sent the list sorted, and the zapi client api
1795 * attempts to enforce that, so this should be
1796 * inexpensive - but it is necessary to support shared
1797 * nexthop-groups.
f70da2a3
DS		 1798 */
1799 nexthop_group_add_sorted(ng, nexthop);
1800 }
1801 if (bnhg) {
ff9aca4f
SW		 1802 /* Note that the order of the backup nexthops is
1803 * significant, so we don't sort this list as we do the
1804 * primary nexthops, we just append.
f70da2a3
DS		 1805 */
1806 if (last_nh)
1807 NEXTHOP_APPEND(last_nh, nexthop);
1808 else
1809 bnhg->nhe->nhg.nexthop = nexthop;
1810
1811 last_nh = nexthop;
1812 }
62e46303
MS		 1813 }
1814
66c28560
SW		 1815
1816 /* succesfully read, set caller pointers now */
1817 if (png)
1818 *png = ng;
1819
1820 if (pbnhg)
1821 *pbnhg = bnhg;
1822
f70da2a3
DS		 1823 return true;
1824}
62e46303 1825
5898ce6f 1826static int zapi_nhg_decode(struct stream *s, int cmd, struct zapi_nhg *api_nhg)
21735352
SW		 1827{
1828 uint16_t i;
1829 struct zapi_nexthop *znh;
1830
1831 STREAM_GETW(s, api_nhg->proto);
1832 STREAM_GETL(s, api_nhg->id);
1833
1834 if (cmd == ZEBRA_NHG_DEL)
1835 goto done;
1836
1837 /* Nexthops */
1838 STREAM_GETW(s, api_nhg->nexthop_num);
1839
1840 if (zserv_nexthop_num_warn(__func__, NULL, api_nhg->nexthop_num))
1841 return -1;
1842
1843 if (api_nhg->nexthop_num <= 0) {
1844 flog_warn(EC_ZEBRA_NEXTHOP_CREATION_FAILED,
1845 "%s: No nexthops sent", __func__);
1846 return -1;
1847 }
1848
1849 for (i = 0; i < api_nhg->nexthop_num; i++) {
1850 znh = &((api_nhg->nexthops)[i]);
1851
1852 if (zapi_nexthop_decode(s, znh, 0, 0) != 0) {
1853 flog_warn(EC_ZEBRA_NEXTHOP_CREATION_FAILED,
1854 "%s: Nexthop creation failed", __func__);
1855 return -1;
1856 }
1857 }
1858
1859 /* Backup Nexthops */
1860 STREAM_GETW(s, api_nhg->backup_nexthop_num);
1861
1862 if (zserv_nexthop_num_warn(__func__, NULL, api_nhg->backup_nexthop_num))
1863 return -1;
1864
1865 for (i = 0; i < api_nhg->backup_nexthop_num; i++) {
1866 znh = &((api_nhg->backup_nexthops)[i]);
1867
1868 if (zapi_nexthop_decode(s, znh, 0, 0) != 0) {
1869 flog_warn(EC_ZEBRA_NEXTHOP_CREATION_FAILED,
1870 "%s: Backup Nexthop creation failed",
1871 __func__);
1872 return -1;
1873 }
1874 }
1875
1876done:
1877 return 0;
1878
1879stream_failure:
1880 flog_warn(
1881 EC_ZEBRA_NEXTHOP_CREATION_FAILED,
1882 "%s: Nexthop Group decode failed with some sort of stream read failure",
1883 __func__);
1884 return -1;
1885}
1886
2f35a820
DS		 1887static void zread_nhg_del(ZAPI_HANDLER_ARGS)
1888{
21735352
SW		 1889 struct stream *s;
1890 struct zapi_nhg api_nhg = {};
0885b1e3 1891 struct nhg_hash_entry *nhe;
2f35a820 1892
21735352
SW		 1893 s = msg;
1894 if (zapi_nhg_decode(s, hdr->command, &api_nhg) < 0) {
1895 if (IS_ZEBRA_DEBUG_RECV)
1896 zlog_debug("%s: Unable to decode zapi_nhg sent",
1897 __func__);
1898 return;
1899 }
2f35a820
DS		 1900
1901 /*
1902 * Delete the received nhg id
2f35a820 1903 */
21735352 1904 nhe = zebra_nhg_proto_del(api_nhg.id, api_nhg.proto);
0885b1e3
SW		 1905
1906 if (nhe) {
6fae63d2 1907 zebra_nhg_decrement_ref(nhe);
ee94437e
MS		 1908 zsend_nhg_notify(api_nhg.proto, client->instance,
1909 client->session_id, api_nhg.id,
1910 ZAPI_NHG_REMOVED);
0885b1e3 1911 } else
ee94437e
MS		 1912 zsend_nhg_notify(api_nhg.proto, client->instance,
1913 client->session_id, api_nhg.id,
1914 ZAPI_NHG_REMOVE_FAIL);
2f35a820
DS		 1915}
1916
8b2d3a0f 1917static void zread_nhg_add(ZAPI_HANDLER_ARGS)
2f35a820
DS		 1918{
1919 struct stream *s;
21735352 1920 struct zapi_nhg api_nhg = {};
2f35a820 1921 struct nexthop_group *nhg = NULL;
21735352 1922 struct nhg_backup_info *bnhg = NULL;
0885b1e3 1923 struct nhg_hash_entry *nhe;
2f35a820 1924
2f35a820 1925 s = msg;
21735352
SW		 1926 if (zapi_nhg_decode(s, hdr->command, &api_nhg) < 0) {
1927 if (IS_ZEBRA_DEBUG_RECV)
1928 zlog_debug("%s: Unable to decode zapi_nhg sent",
1929 __func__);
68671c74
SW		 1930 return;
1931 }
1932
21735352
SW		 1933 if ((!zapi_read_nexthops(client, NULL, api_nhg.nexthops, 0, 0,
1934 api_nhg.nexthop_num,
1935 api_nhg.backup_nexthop_num, &nhg, NULL))
1936 || (!zapi_read_nexthops(client, NULL, api_nhg.backup_nexthops, 0, 0,
1937 api_nhg.backup_nexthop_num,
1938 api_nhg.backup_nexthop_num, NULL, &bnhg))) {
2f35a820 1939
2f35a820 1940 flog_warn(EC_ZEBRA_NEXTHOP_CREATION_FAILED,
ff9aca4f 1941 "%s: Nexthop Group Creation failed", __func__);
2f35a820
DS		 1942 return;
1943 }
0885b1e3 1944
04bec7b2
MS		 1945 /* Create a temporary nhe */
1946 nhe = zebra_nhg_alloc();
1947 nhe->id = api_nhg.id;
1948 nhe->type = api_nhg.proto;
1949 nhe->zapi_instance = client->instance;
1950 nhe->zapi_session = client->session_id;
0885b1e3 1951
04bec7b2
MS		 1952 /* Take over the list(s) of nexthops */
1953 nhe->nhg.nexthop = nhg->nexthop;
1954 nhg->nexthop = NULL;
1955
1956 if (bnhg) {
1957 nhe->backup_info = bnhg;
1958 bnhg = NULL;
1959 }
0885b1e3
SW		 1960
1961 /*
1962 * TODO:
1963 * Assume fully resolved for now and install.
0885b1e3
SW		 1964 * Resolution is going to need some more work.
1965 */
ee94437e 1966
04bec7b2
MS		 1967 /* Enqueue to workqueue for processing */
1968 rib_queue_nhe_add(nhe);
1969
1970 /* Free any local allocations */
1971 nexthop_group_delete(&nhg);
1972 zebra_nhg_backup_free(&bnhg);
1973
2f35a820
DS		 1974}
1975
f70da2a3
DS		 1976static void zread_route_add(ZAPI_HANDLER_ARGS)
1977{
1978 struct stream *s;
1979 struct zapi_route api;
1980 afi_t afi;
1981 struct prefix_ipv6 *src_p = NULL;
1982 struct route_entry *re;
1983 struct nexthop_group *ng = NULL;
1984 struct nhg_backup_info *bnhg = NULL;
1985 int ret;
1986 vrf_id_t vrf_id;
1987 struct nhg_hash_entry nhe;
0eb97b86 1988
f70da2a3
DS		 1989 s = msg;
1990 if (zapi_route_decode(s, &api) < 0) {
1991 if (IS_ZEBRA_DEBUG_RECV)
1992 zlog_debug("%s: Unable to decode zapi_route sent",
1993 __func__);
1994 return;
1995 }
1d48702e 1996
f70da2a3 1997 vrf_id = zvrf_id(zvrf);
31f937fb 1998
2dbe669b
DA		 1999 if (IS_ZEBRA_DEBUG_RECV)
2000 zlog_debug("%s: p=(%u:%u)%pFX, msg flags=0x%x, flags=0x%x",
2001 __func__, vrf_id, api.tableid, &api.prefix,
f70da2a3 2002 (int)api.message, api.flags);
0eb97b86 2003
f70da2a3
DS		 2004 /* Allocate new route. */
2005 re = XCALLOC(MTYPE_RE, sizeof(struct route_entry));
2006 re->type = api.type;
2007 re->instance = api.instance;
2008 re->flags = api.flags;
2009 re->uptime = monotime(NULL);
2010 re->vrf_id = vrf_id;
1d48702e 2011
f70da2a3
DS		 2012 if (api.tableid)
2013 re->table = api.tableid;
2014 else
2015 re->table = zvrf->table_id;
1d48702e 2016
27141ea9
DS		 2017 if (!CHECK_FLAG(api.message, ZAPI_MESSAGE_NHG)
2018 && (!CHECK_FLAG(api.message, ZAPI_MESSAGE_NEXTHOP)
2019 || api.nexthop_num == 0)) {
ff9aca4f
SW		 2020 flog_warn(
2021 EC_ZEBRA_RX_ROUTE_NO_NEXTHOPS,
2022 "%s: received a route without nexthops for prefix %pFX from client %s",
2023 __func__, &api.prefix,
2024 zebra_route_string(client->proto));
1d48702e 2025
f70da2a3
DS		 2026 XFREE(MTYPE_RE, re);
2027 return;
2028 }
1d48702e 2029
f70da2a3 2030 /* Report misuse of the backup flag */
ff9aca4f
SW		 2031 if (CHECK_FLAG(api.message, ZAPI_MESSAGE_BACKUP_NEXTHOPS)
2032 && api.backup_nexthop_num == 0) {
f70da2a3 2033 if (IS_ZEBRA_DEBUG_RECV || IS_ZEBRA_DEBUG_EVENT)
ff9aca4f
SW		 2034 zlog_debug(
2035 "%s: client %s: BACKUP flag set but no backup nexthops, prefix %pFX",
2036 __func__, zebra_route_string(client->proto),
2037 &api.prefix);
f70da2a3 2038 }
62e46303 2039
50db3f2f
SW		 2040 if (CHECK_FLAG(api.message, ZAPI_MESSAGE_NHG))
2041 re->nhe_id = api.nhgid;
2042
2043 if (!re->nhe_id
2b5ecd4c
SW		 2044 && (!zapi_read_nexthops(client, &api.prefix, api.nexthops,
2045 api.flags, api.message, api.nexthop_num,
2046 api.backup_nexthop_num, &ng, NULL)
2047 || !zapi_read_nexthops(client, &api.prefix, api.backup_nexthops,
2048 api.flags, api.message,
2049 api.backup_nexthop_num,
2050 api.backup_nexthop_num, NULL, &bnhg))) {
21735352
SW		 2051
2052 nexthop_group_delete(&ng);
2053 zebra_nhg_backup_free(&bnhg);
f70da2a3
DS		 2054 XFREE(MTYPE_RE, re);
2055 return;
7fcb24bb
RW		 2056 }
2057
bf094f69
QY		 2058 if (CHECK_FLAG(api.message, ZAPI_MESSAGE_DISTANCE))
2059 re->distance = api.distance;
2060 if (CHECK_FLAG(api.message, ZAPI_MESSAGE_METRIC))
2061 re->metric = api.metric;
2062 if (CHECK_FLAG(api.message, ZAPI_MESSAGE_TAG))
2063 re->tag = api.tag;
2064 if (CHECK_FLAG(api.message, ZAPI_MESSAGE_MTU))
2065 re->mtu = api.mtu;
2066
a29a6001
DS		 2067 if (CHECK_FLAG(api.message, ZAPI_MESSAGE_OPAQUE)) {
2068 re->opaque = XMALLOC(MTYPE_OPAQUE,
2069 sizeof(struct opaque) + api.opaque.length);
2070 re->opaque->length = api.opaque.length;
2071 memcpy(re->opaque->data, api.opaque.data, re->opaque->length);
2072 }
2073
bf094f69
QY		 2074 afi = family2afi(api.prefix.family);
2075 if (afi != AFI_IP6 && CHECK_FLAG(api.message, ZAPI_MESSAGE_SRCPFX)) {
e914ccbe 2076 flog_warn(EC_ZEBRA_RX_SRCDEST_WRONG_AFI,
9df414fe 2077 "%s: Received SRC Prefix but afi is not v6",
15569c58 2078 __func__);
0eb97b86 2079 nexthop_group_delete(&ng);
1d48702e 2080 zebra_nhg_backup_free(&bnhg);
bf094f69
QY		 2081 XFREE(MTYPE_RE, re);
2082 return;
2083 }
2084 if (CHECK_FLAG(api.message, ZAPI_MESSAGE_SRCPFX))
2085 src_p = &api.src_prefix;
2086
5e7939a5
DS		 2087 if (api.safi != SAFI_UNICAST && api.safi != SAFI_MULTICAST) {
2088 flog_warn(EC_LIB_ZAPI_MISSMATCH,
2089 "%s: Received safi: %d but we can only accept UNICAST or MULTICAST",
2090 __func__, api.safi);
2091 nexthop_group_delete(&ng);
1d48702e 2092 zebra_nhg_backup_free(&bnhg);
5e7939a5
DS		 2093 XFREE(MTYPE_RE, re);
2094 return;
2095 }
1d48702e 2096
50db3f2f
SW		 2097 /*
2098 * If we have an ID, this proto owns the NHG it sent along with the
2099 * route, so we just send the ID into rib code with it.
2100 *
2101 * Havent figured out how to handle backup NHs with this yet, so lets
2102 * keep that separate.
2103 * Include backup info with the route. We use a temporary nhe here;
377e29f7
MS		 2104 * if this is a new/unknown nhe, a new copy will be allocated
2105 * and stored.
2106 */
50db3f2f
SW		 2107 if (!re->nhe_id) {
2108 zebra_nhe_init(&nhe, afi, ng->nexthop);
2109 nhe.nhg.nexthop = ng->nexthop;
2110 nhe.backup_info = bnhg;
2111 }
1d48702e
MS		 2112 ret = rib_add_multipath_nhe(afi, api.safi, &api.prefix, src_p,
2113 re, &nhe);
bf094f69 2114
377e29f7
MS		 2115 /* At this point, these allocations are not needed: 're' has been
2116 * retained or freed, and if 're' still exists, it is using
2117 * a reference to a shared group object.
2118 */
2119 nexthop_group_delete(&ng);
2120 if (bnhg)
2121 zebra_nhg_backup_free(&bnhg);
2122
bf094f69
QY		 2123 /* Stats */
2124 switch (api.prefix.family) {
2125 case AF_INET:
2126 if (ret > 0)
2127 client->v4_route_add_cnt++;
2128 else if (ret < 0)
2129 client->v4_route_upd8_cnt++;
2130 break;
2131 case AF_INET6:
2132 if (ret > 0)
2133 client->v6_route_add_cnt++;
2134 else if (ret < 0)
2135 client->v6_route_upd8_cnt++;
2136 break;
2137 }
2138}
2139
224ccf29
DL		 2140void zapi_opaque_free(struct opaque *opaque)
2141{
2142 XFREE(MTYPE_OPAQUE, opaque);
2143}
2144
bf094f69
QY		 2145static void zread_route_del(ZAPI_HANDLER_ARGS)
2146{
2147 struct stream *s;
2148 struct zapi_route api;
2149 afi_t afi;
2150 struct prefix_ipv6 *src_p = NULL;
2151 uint32_t table_id;
2152
2153 s = msg;
2154 if (zapi_route_decode(s, &api) < 0)
2155 return;
2156
2157 afi = family2afi(api.prefix.family);
2158 if (afi != AFI_IP6 && CHECK_FLAG(api.message, ZAPI_MESSAGE_SRCPFX)) {
e914ccbe 2159 flog_warn(EC_ZEBRA_RX_SRCDEST_WRONG_AFI,
9df414fe 2160 "%s: Received a src prefix while afi is not v6",
15569c58 2161 __func__);
bf094f69
QY		 2162 return;
2163 }
2164 if (CHECK_FLAG(api.message, ZAPI_MESSAGE_SRCPFX))
2165 src_p = &api.src_prefix;
2166
60ca3cc2 2167 if (api.tableid)
bf094f69
QY		 2168 table_id = api.tableid;
2169 else
2170 table_id = zvrf->table_id;
2171
2dbe669b
DA		 2172 if (IS_ZEBRA_DEBUG_RECV)
2173 zlog_debug("%s: p=(%u:%u)%pFX, msg flags=0x%x, flags=0x%x",
2174 __func__, zvrf_id(zvrf), table_id, &api.prefix,
c2c02b76 2175 (int)api.message, api.flags);
c2c02b76 2176
bf094f69 2177 rib_delete(afi, api.safi, zvrf_id(zvrf), api.type, api.instance,
bc541126 2178 api.flags, &api.prefix, src_p, NULL, 0, table_id, api.metric,
3ceae22b 2179 api.distance, false);
bf094f69
QY		 2180
2181 /* Stats */
2182 switch (api.prefix.family) {
2183 case AF_INET:
2184 client->v4_route_del_cnt++;
2185 break;
2186 case AF_INET6:
2187 client->v6_route_del_cnt++;
2188 break;
2189 }
2190}
2191
bf094f69
QY		 2192/* MRIB Nexthop lookup for IPv4. */
2193static void zread_ipv4_nexthop_lookup_mrib(ZAPI_HANDLER_ARGS)
2194{
2195 struct in_addr addr;
2196 struct route_entry *re;
2197
2198 STREAM_GET(&addr.s_addr, msg, IPV4_MAX_BYTELEN);
2199 re = rib_match_ipv4_multicast(zvrf_id(zvrf), addr, NULL);
2200 zsend_ipv4_nexthop_lookup_mrib(client, addr, re, zvrf);
2201
2202stream_failure:
2203 return;
2204}
2205
bf094f69
QY		 2206/* Register zebra server router-id information. Send current router-id */
2207static void zread_router_id_add(ZAPI_HANDLER_ARGS)
2208{
98a3fb0a
SM		 2209 afi_t afi;
2210
bf094f69
QY		 2211 struct prefix p;
2212
98a3fb0a
SM		 2213 STREAM_GETW(msg, afi);
2214
2215 if (afi <= AFI_UNSPEC || afi >= AFI_MAX) {
2216 zlog_warn(
2217 "Invalid AFI %u while registering for router ID notifications",
2218 afi);
2219 goto stream_failure;
2220 }
2221
bf094f69 2222 /* Router-id information is needed. */
98a3fb0a 2223 vrf_bitmap_set(client->ridinfo[afi], zvrf_id(zvrf));
bf094f69 2224
98a3fb0a 2225 router_id_get(afi, &p, zvrf);
bf094f69 2226
98a3fb0a
SM		 2227 zsend_router_id_update(client, afi, &p, zvrf_id(zvrf));
2228
2229stream_failure:
2230 return;
bf094f69
QY		 2231}
2232
2233/* Unregister zebra server router-id information. */
2234static void zread_router_id_delete(ZAPI_HANDLER_ARGS)
2235{
98a3fb0a
SM		 2236 afi_t afi;
2237
2238 STREAM_GETW(msg, afi);
2239
2240 if (afi <= AFI_UNSPEC || afi >= AFI_MAX) {
2241 zlog_warn(
2242 "Invalid AFI %u while unregistering from router ID notifications",
2243 afi);
2244 goto stream_failure;
2245 }
2246
2247 vrf_bitmap_unset(client->ridinfo[afi], zvrf_id(zvrf));
2248
2249stream_failure:
2250 return;
bf094f69
QY		 2251}
2252
2253static void zsend_capabilities(struct zserv *client, struct zebra_vrf *zvrf)
2254{
2255 struct stream *s = stream_new(ZEBRA_MAX_PACKET_SIZ);
2256
2257 zclient_create_header(s, ZEBRA_CAPABILITIES, zvrf->vrf->vrf_id);
bb6b7f79 2258 stream_putl(s, vrf_get_backend());
bf094f69 2259 stream_putc(s, mpls_enabled);
b3f2b590 2260 stream_putl(s, zrouter.multipath_num);
02c0866d 2261 stream_putc(s, zebra_mlag_get_role());
bf094f69
QY		 2262
2263 stream_putw_at(s, 0, stream_get_endp(s));
21ccc0cf 2264 zserv_send_message(client, s);
bf094f69
QY		 2265}
2266
b120fe3b
DS		 2267void zsend_capabilities_all_clients(void)
2268{
2269 struct listnode *node, *nnode;
2270 struct zebra_vrf *zvrf;
2271 struct zserv *client;
2272
2273 zvrf = vrf_info_lookup(VRF_DEFAULT);
2274 for (ALL_LIST_ELEMENTS(zrouter.client_list, node, nnode, client)) {
17da84a4
KS		 2275 /* Do not send unsolicited messages to synchronous clients. */
2276 if (client->synchronous)
2277 continue;
2278
b120fe3b
DS		 2279 zsend_capabilities(client, zvrf);
2280 }
2281}
2282
bf094f69
QY		 2283/* Tie up route-type and client->sock */
2284static void zread_hello(ZAPI_HANDLER_ARGS)
2285{
2286 /* type of protocol (lib/zebra.h) */
2287 uint8_t proto;
2288 unsigned short instance;
2289 uint8_t notify;
17da84a4 2290 uint8_t synchronous;
4e0b5b31 2291 uint32_t session_id;
bf094f69
QY		 2292
2293 STREAM_GETC(msg, proto);
2294 STREAM_GETW(msg, instance);
4e0b5b31 2295 STREAM_GETL(msg, session_id);
bf094f69 2296 STREAM_GETC(msg, notify);
17da84a4 2297 STREAM_GETC(msg, synchronous);
bf094f69
QY		 2298 if (notify)
2299 client->notify_owner = true;
2300
17da84a4
KS		 2301 if (synchronous)
2302 client->synchronous = true;
2303
bf094f69 2304 /* accept only dynamic routing protocols */
f23cbcda 2305 if ((proto < ZEBRA_ROUTE_MAX) && (proto > ZEBRA_ROUTE_CONNECT)) {
bf094f69
QY		 2306 zlog_notice(
2307 "client %d says hello and bids fair to announce only %s routes vrf=%u",
2308 client->sock, zebra_route_string(proto),
2309 zvrf->vrf->vrf_id);
2310 if (instance)
2311 zlog_notice("client protocol instance %d", instance);
2312
2313 client->proto = proto;
2314 client->instance = instance;
4e0b5b31 2315 client->session_id = session_id;
6f4aee61
S		 2316
2317 /* Graceful restart processing for client connect */
2318 zebra_gr_client_reconnect(client);
bf094f69
QY		 2319 }
2320
17da84a4
KS		 2321 if (!client->synchronous) {
2322 zsend_capabilities(client, zvrf);
2323 zebra_vrf_update_all(client);
2324 }
bf094f69
QY		 2325stream_failure:
2326 return;
2327}
2328
2329/* Unregister all information in a VRF. */
2330static void zread_vrf_unregister(ZAPI_HANDLER_ARGS)
2331{
2332 int i;
2333 afi_t afi;
2334
49db7a7b 2335 for (afi = AFI_IP; afi < AFI_MAX; afi++) {
bf094f69
QY		 2336 for (i = 0; i < ZEBRA_ROUTE_MAX; i++)
2337 vrf_bitmap_unset(client->redist[afi][i], zvrf_id(zvrf));
49db7a7b 2338 vrf_bitmap_unset(client->redist_default[afi], zvrf_id(zvrf));
98a3fb0a 2339 vrf_bitmap_unset(client->ridinfo[afi], zvrf_id(zvrf));
7723e8d3 2340 vrf_bitmap_unset(client->nhrp_neighinfo[afi], zvrf_id(zvrf));
49db7a7b 2341 }
bf094f69
QY		 2342}
2343
ff8d3c2d
MS		 2344/*
2345 * Validate incoming zapi mpls lsp / labels message
2346 */
2347static int zapi_labels_validate(const struct zapi_labels *zl)
2348{
2349 int ret = -1;
2350 int i, j, idx;
2351 uint32_t bits[8];
2352 uint32_t ival;
2353 const struct zapi_nexthop *znh;
2354
2355 /* Validate backup info: no duplicates for a single primary */
2356 if (zl->backup_nexthop_num == 0) {
2357 ret = 0;
2358 goto done;
2359 }
2360
2361 for (j = 0; j < zl->nexthop_num; j++) {
2362 znh = &zl->nexthops[j];
2363
2364 memset(bits, 0, sizeof(bits));
2365
2366 for (i = 0; i < znh->backup_num; i++) {
2367 idx = znh->backup_idx[i] / 32;
2368
2369 ival = 1 << znh->backup_idx[i] % 32;
2370
2371 /* Check whether value is already used */
2372 if (ival & bits[idx]) {
2373 /* Fail */
2374
2375 if (IS_ZEBRA_DEBUG_RECV)
2376 zlog_debug("%s: invalid zapi mpls message: duplicate backup nexthop index %d",
2377 __func__,
2378 znh->backup_idx[i]);
2379 goto done;
2380 }
2381
2382 /* Mark index value */
2383 bits[idx] |= ival;
2384 }
2385 }
2386
2387 ret = 0;
2388
2389done:
2390
2391 return ret;
2392}
2393
ea6b290b
RW		 2394/*
2395 * Handle request to create an MPLS LSP.
2396 *
2397 * A single message can fully specify an LSP with multiple nexthops.
2398 *
2399 * When the optional ZAPI_LABELS_FTN flag is set, the specified FEC (route) is
2400 * updated to use the received label(s).
2401 */
2402static void zread_mpls_labels_add(ZAPI_HANDLER_ARGS)
bf094f69
QY		 2403{
2404 struct stream *s;
bad6b0e7 2405 struct zapi_labels zl;
f2e7f4eb 2406 int ret;
bf094f69
QY		 2407
2408 /* Get input stream. */
2409 s = msg;
bad6b0e7
RW		 2410 if (zapi_labels_decode(s, &zl) < 0) {
2411 if (IS_ZEBRA_DEBUG_RECV)
2412 zlog_debug("%s: Unable to decode zapi_labels sent",
15569c58 2413 __func__);
bf094f69
QY		 2414 return;
2415 }
bf094f69 2416
bf094f69
QY		 2417 if (!mpls_enabled)
2418 return;
2419
ff8d3c2d
MS		 2420 /* Validate; will debug on failure */
2421 if (zapi_labels_validate(&zl) < 0)
2422 return;
2423
f2e7f4eb
MS		 2424 ret = mpls_zapi_labels_process(true, zvrf, &zl);
2425 if (ret < 0) {
2426 if (IS_ZEBRA_DEBUG_RECV)
2427 zlog_debug("%s: Error processing zapi request",
2428 __func__);
ea6b290b
RW		 2429 }
2430}
2431
2432/*
2433 * Handle request to delete an MPLS LSP.
2434 *
2435 * An LSP is identified by its type and local label. When the received message
2436 * doesn't contain any nexthop, the whole LSP is deleted. Otherwise, only the
2437 * listed LSP nexthops (aka NHLFEs) are deleted.
2438 *
2439 * When the optional ZAPI_LABELS_FTN flag is set, the labels of the specified
2440 * FEC (route) nexthops are deleted.
2441 */
2442static void zread_mpls_labels_delete(ZAPI_HANDLER_ARGS)
2443{
2444 struct stream *s;
2445 struct zapi_labels zl;
f2e7f4eb 2446 int ret;
ea6b290b
RW		 2447
2448 /* Get input stream. */
2449 s = msg;
2450 if (zapi_labels_decode(s, &zl) < 0) {
2451 if (IS_ZEBRA_DEBUG_RECV)
2452 zlog_debug("%s: Unable to decode zapi_labels sent",
15569c58 2453 __func__);
ea6b290b
RW		 2454 return;
2455 }
2456
2457 if (!mpls_enabled)
2458 return;
2459
2460 if (zl.nexthop_num > 0) {
f2e7f4eb
MS		 2461 ret = mpls_zapi_labels_process(false /*delete*/, zvrf, &zl);
2462 if (ret < 0) {
2463 if (IS_ZEBRA_DEBUG_RECV)
2464 zlog_debug("%s: Error processing zapi request",
2465 __func__);
ea6b290b
RW		 2466 }
2467 } else {
2468 mpls_lsp_uninstall_all_vrf(zvrf, zl.type, zl.local_label);
2469
b3c49d0e 2470 if (CHECK_FLAG(zl.message, ZAPI_LABELS_FTN))
ea6b290b
RW		 2471 mpls_ftn_uninstall(zvrf, zl.type, &zl.route.prefix,
2472 zl.route.type, zl.route.instance);
2473 }
2474}
2475
2476/*
2477 * Handle request to add an MPLS LSP or change an existing one.
2478 *
2479 * A single message can fully specify an LSP with multiple nexthops.
2480 *
2481 * When the optional ZAPI_LABELS_FTN flag is set, the specified FEC (route) is
2482 * updated to use the received label(s).
2483 *
2484 * NOTE: zebra will use route replace semantics (make-before-break) to update
2485 * the LSP in the forwarding plane if that's supported by the underlying
2486 * platform.
2487 */
2488static void zread_mpls_labels_replace(ZAPI_HANDLER_ARGS)
2489{
2490 struct stream *s;
2491 struct zapi_labels zl;
2492
2493 /* Get input stream. */
2494 s = msg;
2495 if (zapi_labels_decode(s, &zl) < 0) {
2496 if (IS_ZEBRA_DEBUG_RECV)
2497 zlog_debug("%s: Unable to decode zapi_labels sent",
15569c58 2498 __func__);
ea6b290b
RW		 2499 return;
2500 }
2501
2502 if (!mpls_enabled)
2503 return;
2504
ff8d3c2d
MS		 2505 /* Validate; will debug on failure */
2506 if (zapi_labels_validate(&zl) < 0)
2507 return;
2508
f2e7f4eb
MS		 2509 /* This removes everything, then re-adds from the client's
2510 * zapi message. Since the LSP will be processed later, on this
2511 * this same pthread, all of the changes will 'appear' at once.
2512 */
ea6b290b
RW		 2513 mpls_lsp_uninstall_all_vrf(zvrf, zl.type, zl.local_label);
2514 if (CHECK_FLAG(zl.message, ZAPI_LABELS_FTN))
2515 mpls_ftn_uninstall(zvrf, zl.type, &zl.route.prefix,
2516 zl.route.type, zl.route.instance);
2517
f2e7f4eb 2518 mpls_zapi_labels_process(true, zvrf, &zl);
bf094f69
QY		 2519}
2520
31f937fb
SM		 2521static void zread_sr_policy_set(ZAPI_HANDLER_ARGS)
2522{
2523 struct stream *s;
2524 struct zapi_sr_policy zp;
2525 struct zapi_srte_tunnel *zt;
2526 struct zebra_sr_policy *policy;
2527
2528 /* Get input stream. */
2529 s = msg;
2530 if (zapi_sr_policy_decode(s, &zp) < 0) {
2531 if (IS_ZEBRA_DEBUG_RECV)
2532 zlog_debug("%s: Unable to decode zapi_sr_policy sent",
7d7be47e 2533 __func__);
31f937fb
SM		 2534 return;
2535 }
2536 zt = &zp.segment_list;
2537 if (zt->label_num < 1) {
2538 if (IS_ZEBRA_DEBUG_RECV)
2539 zlog_debug(
2540 "%s: SR-TE tunnel must contain at least one label",
7d7be47e 2541 __func__);
31f937fb
SM		 2542 return;
2543 }
2544
2545 if (!mpls_enabled)
2546 return;
2547
2548 policy = zebra_sr_policy_find(zp.color, &zp.endpoint);
2549 if (!policy)
2550 policy = zebra_sr_policy_add(zp.color, &zp.endpoint, zp.name);
2551 /* TODO: per-VRF list of SR-TE policies. */
2552 policy->zvrf = zvrf;
2553
2554 zebra_sr_policy_validate(policy, &zp.segment_list);
2555}
2556
2557static void zread_sr_policy_delete(ZAPI_HANDLER_ARGS)
2558{
2559 struct stream *s;
2560 struct zapi_sr_policy zp;
2561 struct zebra_sr_policy *policy;
2562
2563 /* Get input stream. */
2564 s = msg;
2565 if (zapi_sr_policy_decode(s, &zp) < 0) {
2566 if (IS_ZEBRA_DEBUG_RECV)
2567 zlog_debug("%s: Unable to decode zapi_sr_policy sent",
7d7be47e 2568 __func__);
31f937fb
SM		 2569 return;
2570 }
2571
2572 if (!mpls_enabled)
2573 return;
2574
2575 policy = zebra_sr_policy_find(zp.color, &zp.endpoint);
2576 if (!policy) {
2577 if (IS_ZEBRA_DEBUG_RECV)
7d7be47e 2578 zlog_debug("%s: Unable to find SR-TE policy", __func__);
31f937fb
SM		 2579 return;
2580 }
2581
2582 zebra_sr_policy_del(policy);
2583}
2584
2585int zsend_sr_policy_notify_status(uint32_t color, struct ipaddr *endpoint,
2586 char *name, int status)
2587{
2588 struct zserv *client;
2589 struct stream *s;
2590
2591 client = zserv_find_client(ZEBRA_ROUTE_SRTE, 0);
2592 if (!client) {
2593 if (IS_ZEBRA_DEBUG_PACKET)
2594 zlog_debug(
2595 "Not notifying pathd about policy %s"
2596 " status change to %d",
2597 name, status);
2598 return 0;
2599 }
2600
2601 if (IS_ZEBRA_DEBUG_PACKET)
2602 zlog_debug(
2603 "Notifying pathd about policy %s status change"
2604 " to %d",
2605 name, status);
2606
2607 s = stream_new(ZEBRA_MAX_PACKET_SIZ);
2608 stream_reset(s);
2609
2610 zclient_create_header(s, ZEBRA_SR_POLICY_NOTIFY_STATUS, VRF_DEFAULT);
2611 stream_putl(s, color);
2612 stream_put_ipaddr(s, endpoint);
2613 stream_write(s, name, SRTE_POLICY_NAME_MAX_LENGTH);
2614 stream_putl(s, status);
2615
2616 stream_putw_at(s, 0, stream_get_endp(s));
2617
2618 return zserv_send_message(client, s);
2619}
2620
581e797e
KS		 2621/* Send client close notify to client */
2622int zsend_client_close_notify(struct zserv *client, struct zserv *closed_client)
2623{
2624 struct stream *s = stream_new(ZEBRA_MAX_PACKET_SIZ);
2625
2626 zclient_create_header(s, ZEBRA_CLIENT_CLOSE_NOTIFY, VRF_DEFAULT);
2627
2628 stream_putc(s, closed_client->proto);
2629 stream_putw(s, closed_client->instance);
2630 stream_putl(s, closed_client->session_id);
2631
2632 stream_putw_at(s, 0, stream_get_endp(s));
2633
2634 return zserv_send_message(client, s);
2635}
2636
6e68a084
HS		 2637int zsend_srv6_manager_get_locator_chunk_response(struct zserv *client,
2638 vrf_id_t vrf_id,
2639 struct srv6_locator *loc)
2640{
1bda3e62 2641 struct srv6_locator_chunk chunk = {};
6e68a084
HS		 2642 struct stream *s = stream_new(ZEBRA_MAX_PACKET_SIZ);
2643
ac6a9479
HS		 2644 strlcpy(chunk.locator_name, loc->name, sizeof(chunk.locator_name));
2645 chunk.prefix = loc->prefix;
2646 chunk.block_bits_length = loc->block_bits_length;
2647 chunk.node_bits_length = loc->node_bits_length;
2648 chunk.function_bits_length = loc->function_bits_length;
2649 chunk.argument_bits_length = loc->argument_bits_length;
2650 chunk.keep = 0;
2651 chunk.proto = client->proto;
2652 chunk.instance = client->instance;
6e68a084 2653
ac6a9479
HS		 2654 zclient_create_header(s, ZEBRA_SRV6_MANAGER_GET_LOCATOR_CHUNK, vrf_id);
2655 zapi_srv6_locator_chunk_encode(s, &chunk);
6e68a084 2656 stream_putw_at(s, 0, stream_get_endp(s));
6e68a084
HS		 2657 return zserv_send_message(client, s);
2658}
2659
bf094f69
QY		 2660/* Send response to a table manager connect request to client */
2661static void zread_table_manager_connect(struct zserv *client,
2662 struct stream *msg, vrf_id_t vrf_id)
2663{
2664 struct stream *s;
2665 uint8_t proto;
2666 uint16_t instance;
c479e756 2667 struct vrf *vrf = vrf_lookup_by_id(vrf_id);
bf094f69
QY		 2668
2669 s = msg;
2670
2671 /* Get data. */
2672 STREAM_GETC(s, proto);
2673 STREAM_GETW(s, instance);
2674
2675 /* accept only dynamic routing protocols */
2676 if ((proto >= ZEBRA_ROUTE_MAX) || (proto <= ZEBRA_ROUTE_STATIC)) {
e914ccbe 2677 flog_err(EC_ZEBRA_TM_WRONG_PROTO,
1c50c1c0
QY		 2678 "client %d has wrong protocol %s", client->sock,
2679 zebra_route_string(proto));
bf094f69
QY		 2680 zsend_table_manager_connect_response(client, vrf_id, 1);
2681 return;
2682 }
c479e756
DS		 2683 zlog_notice("client %d with vrf %s(%u) instance %u connected as %s",
2684 client->sock, VRF_LOGNAME(vrf), vrf_id, instance,
2685 zebra_route_string(proto));
bf094f69
QY		 2686 client->proto = proto;
2687 client->instance = instance;
2688
2689 /*
2690 * Release previous labels of same protocol and instance.
2691 * This is done in case it restarted from an unexpected shutdown.
2692 */
453844ab 2693 release_daemon_table_chunks(client);
bf094f69
QY		 2694
2695 zsend_table_manager_connect_response(client, vrf_id, 0);
2696
2697stream_failure:
2698 return;
2699}
2700
2701static void zread_label_manager_connect(struct zserv *client,
2702 struct stream *msg, vrf_id_t vrf_id)
2703{
2704 struct stream *s;
2705 /* type of protocol (lib/zebra.h) */
2706 uint8_t proto;
2707 unsigned short instance;
2708
2709 /* Get input stream. */
2710 s = msg;
2711
2712 /* Get data. */
2713 STREAM_GETC(s, proto);
2714 STREAM_GETW(s, instance);
2715
2716 /* accept only dynamic routing protocols */
2717 if ((proto >= ZEBRA_ROUTE_MAX) || (proto <= ZEBRA_ROUTE_STATIC)) {
e914ccbe 2718 flog_err(EC_ZEBRA_TM_WRONG_PROTO,
1c50c1c0
QY		 2719 "client %d has wrong protocol %s", client->sock,
2720 zebra_route_string(proto));
e11d7c96 2721 zsend_label_manager_connect_response(client, vrf_id, 1);
bf094f69
QY		 2722 return;
2723 }
e11d7c96
EDP		 2724
2725 /* recall proto and instance in this socket */
bf094f69
QY		 2726 client->proto = proto;
2727 client->instance = instance;
2728
e11d7c96 2729 /* call hook for connection using wrapper */
4cebdb9b 2730 lm_client_connect_call(client, vrf_id);
bf094f69
QY		 2731
2732stream_failure:
2733 return;
2734}
2735
2736static void zread_get_label_chunk(struct zserv *client, struct stream *msg,
2737 vrf_id_t vrf_id)
2738{
2739 struct stream *s;
2740 uint8_t keep;
0e3b6a92 2741 uint32_t size, base;
e11d7c96 2742 struct label_manager_chunk *lmc = NULL;
5dffb0e9
FR		 2743 uint8_t proto;
2744 unsigned short instance;
bf094f69
QY		 2745
2746 /* Get input stream. */
2747 s = msg;
2748
2749 /* Get data. */
5dffb0e9
FR		 2750 STREAM_GETC(s, proto);
2751 STREAM_GETW(s, instance);
bf094f69
QY		 2752 STREAM_GETC(s, keep);
2753 STREAM_GETL(s, size);
0e3b6a92 2754 STREAM_GETL(s, base);
bf094f69 2755
4cebdb9b
MS		 2756 assert(proto == client->proto && instance == client->instance);
2757
e11d7c96 2758 /* call hook to get a chunk using wrapper */
4cebdb9b 2759 lm_get_chunk_call(&lmc, client, keep, size, base, vrf_id);
bf094f69 2760
bf094f69
QY		 2761stream_failure:
2762 return;
2763}
2764
2765static void zread_release_label_chunk(struct zserv *client, struct stream *msg)
2766{
2767 struct stream *s;
2768 uint32_t start, end;
5dffb0e9
FR		 2769 uint8_t proto;
2770 unsigned short instance;
bf094f69
QY		 2771
2772 /* Get input stream. */
2773 s = msg;
2774
2775 /* Get data. */
5dffb0e9
FR		 2776 STREAM_GETC(s, proto);
2777 STREAM_GETW(s, instance);
bf094f69
QY		 2778 STREAM_GETL(s, start);
2779 STREAM_GETL(s, end);
2780
4cebdb9b
MS		 2781 assert(proto == client->proto && instance == client->instance);
2782
e11d7c96 2783 /* call hook to release a chunk using wrapper */
4cebdb9b 2784 lm_release_chunk_call(client, start, end);
bf094f69
QY		 2785
2786stream_failure:
2787 return;
2788}
e11d7c96 2789
bf094f69
QY		 2790static void zread_label_manager_request(ZAPI_HANDLER_ARGS)
2791{
e11d7c96
EDP		 2792 if (hdr->command == ZEBRA_LABEL_MANAGER_CONNECT
2793 || hdr->command == ZEBRA_LABEL_MANAGER_CONNECT_ASYNC)
2794 zread_label_manager_connect(client, msg, zvrf_id(zvrf));
bf094f69 2795 else {
e11d7c96
EDP		 2796 if (hdr->command == ZEBRA_GET_LABEL_CHUNK)
2797 zread_get_label_chunk(client, msg, zvrf_id(zvrf));
2798 else if (hdr->command == ZEBRA_RELEASE_LABEL_CHUNK)
2799 zread_release_label_chunk(client, msg);
bf094f69
QY		 2800 }
2801}
2802
2803static void zread_get_table_chunk(struct zserv *client, struct stream *msg,
2804 vrf_id_t vrf_id)
2805{
2806 struct stream *s;
2807 uint32_t size;
2808 struct table_manager_chunk *tmc;
2809
2810 /* Get input stream. */
2811 s = msg;
2812
2813 /* Get data. */
2814 STREAM_GETL(s, size);
2815
2816 tmc = assign_table_chunk(client->proto, client->instance, size);
2817 if (!tmc)
e914ccbe 2818 flog_err(EC_ZEBRA_TM_CANNOT_ASSIGN_CHUNK,
1c50c1c0
QY		 2819 "%s: Unable to assign Table Chunk of size %u",
2820 __func__, size);
bf094f69
QY		 2821 else
2822 zlog_debug("Assigned Table Chunk %u - %u", tmc->start,
2823 tmc->end);
2824 /* send response back */
2825 zsend_assign_table_chunk_response(client, vrf_id, tmc);
2826
2827stream_failure:
2828 return;
2829}
2830
2831static void zread_release_table_chunk(struct zserv *client, struct stream *msg)
2832{
2833 struct stream *s;
2834 uint32_t start, end;
2835
2836 /* Get input stream. */
2837 s = msg;
2838
2839 /* Get data. */
2840 STREAM_GETL(s, start);
2841 STREAM_GETL(s, end);
2842
2843 release_table_chunk(client->proto, client->instance, start, end);
2844
2845stream_failure:
2846 return;
2847}
2848
2849static void zread_table_manager_request(ZAPI_HANDLER_ARGS)
2850{
16bd37d6 2851 /* to avoid sending other messages like ZEBRA_INTERFACE_UP */
bf094f69
QY		 2852 if (hdr->command == ZEBRA_TABLE_MANAGER_CONNECT)
2853 zread_table_manager_connect(client, msg, zvrf_id(zvrf));
2854 else {
2855 /* Sanity: don't allow 'unidentified' requests */
2856 if (!client->proto) {
af4c2728 2857 flog_err(
e914ccbe 2858 EC_ZEBRA_TM_ALIENS,
16bd37d6 2859 "Got SRv6 request from an unidentified client");
bf094f69
QY		 2860 return;
2861 }
2862 if (hdr->command == ZEBRA_GET_TABLE_CHUNK)
2863 zread_get_table_chunk(client, msg, zvrf_id(zvrf));
2864 else if (hdr->command == ZEBRA_RELEASE_TABLE_CHUNK)
2865 zread_release_table_chunk(client, msg);
2866 }
2867}
2868
6e68a084
HS		 2869static void zread_srv6_manager_get_locator_chunk(struct zserv *client,
2870 struct stream *msg,
2871 vrf_id_t vrf_id)
2872{
2873 struct stream *s = msg;
6e68a084
HS		 2874 uint16_t len;
2875 char locator_name[SRV6_LOCNAME_SIZE] = {0};
2876
2877 /* Get data. */
6e68a084
HS		 2878 STREAM_GETW(s, len);
2879 STREAM_GET(locator_name, s, len);
2880
6e68a084
HS		 2881 /* call hook to get a chunk using wrapper */
2882 struct srv6_locator *loc = NULL;
2883 srv6_manager_get_locator_chunk_call(&loc, client, locator_name, vrf_id);
2884
2885stream_failure:
2886 return;
2887}
2888
2889static void zread_srv6_manager_release_locator_chunk(struct zserv *client,
2890 struct stream *msg,
2891 vrf_id_t vrf_id)
2892{
2893 struct stream *s = msg;
6e68a084
HS		 2894 uint16_t len;
2895 char locator_name[SRV6_LOCNAME_SIZE] = {0};
2896
2897 /* Get data. */
6e68a084
HS		 2898 STREAM_GETW(s, len);
2899 STREAM_GET(locator_name, s, len);
2900
6e68a084
HS		 2901 /* call hook to release a chunk using wrapper */
2902 srv6_manager_release_locator_chunk_call(client, locator_name, vrf_id);
2903
2904stream_failure:
2905 return;
2906}
2907
2908static void zread_srv6_manager_request(ZAPI_HANDLER_ARGS)
2909{
2910 switch (hdr->command) {
6e68a084
HS		 2911 case ZEBRA_SRV6_MANAGER_GET_LOCATOR_CHUNK:
2912 zread_srv6_manager_get_locator_chunk(client, msg,
2913 zvrf_id(zvrf));
2914 break;
2915 case ZEBRA_SRV6_MANAGER_RELEASE_LOCATOR_CHUNK:
2916 zread_srv6_manager_release_locator_chunk(client, msg,
2917 zvrf_id(zvrf));
2918 break;
2919 default:
9f900cda 2920 zlog_err("%s: unknown SRv6 Manager command", __func__);
6e68a084
HS		 2921 break;
2922 }
2923}
2924
bf094f69
QY		 2925static void zread_pseudowire(ZAPI_HANDLER_ARGS)
2926{
2927 struct stream *s;
2928 char ifname[IF_NAMESIZE];
2929 ifindex_t ifindex;
2930 int type;
2931 int af;
2932 union g_addr nexthop;
2933 uint32_t local_label;
2934 uint32_t remote_label;
2935 uint8_t flags;
2936 union pw_protocol_fields data;
2937 uint8_t protocol;
2938 struct zebra_pw *pw;
2939
2940 /* Get input stream. */
2941 s = msg;
2942
2943 /* Get data. */
2944 STREAM_GET(ifname, s, IF_NAMESIZE);
f223b3d1 2945 ifname[IF_NAMESIZE - 1] = '\0';
bf094f69
QY		 2946 STREAM_GETL(s, ifindex);
2947 STREAM_GETL(s, type);
2948 STREAM_GETL(s, af);
2949 switch (af) {
2950 case AF_INET:
2951 STREAM_GET(&nexthop.ipv4.s_addr, s, IPV4_MAX_BYTELEN);
2952 break;
2953 case AF_INET6:
2954 STREAM_GET(&nexthop.ipv6, s, 16);
2955 break;
2956 default:
2957 return;
2958 }
2959 STREAM_GETL(s, local_label);
2960 STREAM_GETL(s, remote_label);
2961 STREAM_GETC(s, flags);
2962 STREAM_GET(&data, s, sizeof(data));
2963 protocol = client->proto;
2964
2965 pw = zebra_pw_find(zvrf, ifname);
2966 switch (hdr->command) {
2967 case ZEBRA_PW_ADD:
2968 if (pw) {
e914ccbe 2969 flog_warn(EC_ZEBRA_PSEUDOWIRE_EXISTS,
9df414fe 2970 "%s: pseudowire %s already exists [%s]",
bf094f69
QY		 2971 __func__, ifname,
2972 zserv_command_string(hdr->command));
2973 return;
2974 }
2975
2976 zebra_pw_add(zvrf, ifname, protocol, client);
2977 break;
2978 case ZEBRA_PW_DELETE:
2979 if (!pw) {
e914ccbe 2980 flog_warn(EC_ZEBRA_PSEUDOWIRE_NONEXISTENT,
9df414fe 2981 "%s: pseudowire %s not found [%s]", __func__,
bf094f69
QY		 2982 ifname, zserv_command_string(hdr->command));
2983 return;
2984 }
2985
2986 zebra_pw_del(zvrf, pw);
2987 break;
2988 case ZEBRA_PW_SET:
2989 case ZEBRA_PW_UNSET:
2990 if (!pw) {
e914ccbe 2991 flog_warn(EC_ZEBRA_PSEUDOWIRE_NONEXISTENT,
9df414fe 2992 "%s: pseudowire %s not found [%s]", __func__,
bf094f69
QY		 2993 ifname, zserv_command_string(hdr->command));
2994 return;
2995 }
2996
2997 switch (hdr->command) {
2998 case ZEBRA_PW_SET:
2999 pw->enabled = 1;
3000 break;
3001 case ZEBRA_PW_UNSET:
3002 pw->enabled = 0;
3003 break;
3004 }
3005
3006 zebra_pw_change(pw, ifindex, type, af, &nexthop, local_label,
3007 remote_label, flags, &data);
3008 break;
3009 }
3010
3011stream_failure:
3012 return;
3013}
3014
3015static void zread_interface_set_master(ZAPI_HANDLER_ARGS)
3016{
3017 struct interface *master;
3018 struct interface *slave;
3019 struct stream *s = msg;
3020 int ifindex;
3021 vrf_id_t vrf_id;
3022
3023 STREAM_GETL(s, vrf_id);
3024 STREAM_GETL(s, ifindex);
3025 master = if_lookup_by_index(ifindex, vrf_id);
3026
3027 STREAM_GETL(s, vrf_id);
3028 STREAM_GETL(s, ifindex);
3029 slave = if_lookup_by_index(ifindex, vrf_id);
3030
3031 if (!master || !slave)
3032 return;
3033
3034 kernel_interface_set_master(master, slave);
3035
3036stream_failure:
3037 return;
3038}
3039
3040
3041static void zread_vrf_label(ZAPI_HANDLER_ARGS)
3042{
3043 struct interface *ifp;
3044 mpls_label_t nlabel;
3045 afi_t afi;
3046 struct stream *s;
3047 struct zebra_vrf *def_zvrf;
3048 enum lsp_types_t ltype;
3049
3050 s = msg;
3051 STREAM_GETL(s, nlabel);
3052 STREAM_GETC(s, afi);
663d3a91
QY		 3053
3054 if (!(IS_VALID_AFI(afi))) {
3055 zlog_warn("Invalid AFI for VRF label: %u", afi);
3056 return;
3057 }
3058
bf094f69
QY		 3059 if (nlabel == zvrf->label[afi]) {
3060 /*
3061 * Nothing to do here move along
3062 */
3063 return;
3064 }
3065
3066 STREAM_GETC(s, ltype);
3067
3068 if (zvrf->vrf->vrf_id != VRF_DEFAULT)
a36898e7 3069 ifp = if_lookup_by_name(zvrf->vrf->name, zvrf->vrf->vrf_id);
bf094f69 3070 else
a36898e7 3071 ifp = if_lookup_by_name("lo", VRF_DEFAULT);
bf094f69
QY		 3072
3073 if (!ifp) {
3074 zlog_debug("Unable to find specified Interface for %s",
3075 zvrf->vrf->name);
3076 return;
3077 }
3078
3079 def_zvrf = zebra_vrf_lookup_by_id(VRF_DEFAULT);
3080
3081 if (zvrf->label[afi] != MPLS_LABEL_NONE) {
3082 afi_t scrubber;
3083 bool really_remove;
3084
3085 really_remove = true;
3086 for (scrubber = AFI_IP; scrubber < AFI_MAX; scrubber++) {
3087 if (scrubber == afi)
3088 continue;
3089
3090 if (zvrf->label[scrubber] == MPLS_LABEL_NONE)
3091 continue;
3092
3093 if (zvrf->label[afi] == zvrf->label[scrubber]) {
3094 really_remove = false;
3095 break;
3096 }
3097 }
3098
3099 if (really_remove)
3100 mpls_lsp_uninstall(def_zvrf, ltype, zvrf->label[afi],
3101 NEXTHOP_TYPE_IFINDEX, NULL,
cc1b9746 3102 ifp->ifindex, false /*backup*/);
bf094f69
QY		 3103 }
3104
5065db0a
RW		 3105 if (nlabel != MPLS_LABEL_NONE) {
3106 mpls_label_t out_label = MPLS_LABEL_IMPLICIT_NULL;
3107 mpls_lsp_install(def_zvrf, ltype, nlabel, 1, &out_label,
3108 NEXTHOP_TYPE_IFINDEX, NULL, ifp->ifindex);
3109 }
bf094f69
QY		 3110
3111 zvrf->label[afi] = nlabel;
3112stream_failure:
3113 return;
3114}
3115
3116static inline void zread_rule(ZAPI_HANDLER_ARGS)
3117{
3118 struct zebra_pbr_rule zpr;
3119 struct stream *s;
3120 uint32_t total, i;
58a1d249 3121 char ifname[INTERFACE_NAMSIZ + 1] = {};
bf094f69
QY		 3122
3123 s = msg;
3124 STREAM_GETL(s, total);
3125
3126 for (i = 0; i < total; i++) {
3127 memset(&zpr, 0, sizeof(zpr));
3128
3129 zpr.sock = client->sock;
3130 zpr.rule.vrf_id = hdr->vrf_id;
3131 STREAM_GETL(s, zpr.rule.seq);
3132 STREAM_GETL(s, zpr.rule.priority);
3133 STREAM_GETL(s, zpr.rule.unique);
3134 STREAM_GETC(s, zpr.rule.filter.src_ip.family);
3135 STREAM_GETC(s, zpr.rule.filter.src_ip.prefixlen);
3136 STREAM_GET(&zpr.rule.filter.src_ip.u.prefix, s,
3137 prefix_blen(&zpr.rule.filter.src_ip));
3138 STREAM_GETW(s, zpr.rule.filter.src_port);
3139 STREAM_GETC(s, zpr.rule.filter.dst_ip.family);
3140 STREAM_GETC(s, zpr.rule.filter.dst_ip.prefixlen);
3141 STREAM_GET(&zpr.rule.filter.dst_ip.u.prefix, s,
3142 prefix_blen(&zpr.rule.filter.dst_ip));
3143 STREAM_GETW(s, zpr.rule.filter.dst_port);
01f23aff 3144 STREAM_GETC(s, zpr.rule.filter.dsfield);
bf094f69
QY		 3145 STREAM_GETL(s, zpr.rule.filter.fwmark);
3146 STREAM_GETL(s, zpr.rule.action.table);
58a1d249 3147 STREAM_GET(ifname, s, INTERFACE_NAMSIZ);
bf094f69 3148
58a1d249
DS		 3149 strlcpy(zpr.ifname, ifname, sizeof(zpr.ifname));
3150 strlcpy(zpr.rule.ifname, ifname, sizeof(zpr.rule.ifname));
bf094f69
QY		 3151
3152 if (!is_default_prefix(&zpr.rule.filter.src_ip))
3153 zpr.rule.filter.filter_bm |= PBR_FILTER_SRC_IP;
3154
3155 if (!is_default_prefix(&zpr.rule.filter.dst_ip))
3156 zpr.rule.filter.filter_bm |= PBR_FILTER_DST_IP;
3157
3158 if (zpr.rule.filter.src_port)
3159 zpr.rule.filter.filter_bm |= PBR_FILTER_SRC_PORT;
3160
3161 if (zpr.rule.filter.dst_port)
3162 zpr.rule.filter.filter_bm |= PBR_FILTER_DST_PORT;
3163
01f23aff
WC		 3164 if (zpr.rule.filter.dsfield)
3165 zpr.rule.filter.filter_bm |= PBR_FILTER_DSFIELD;
3166
bf094f69
QY		 3167 if (zpr.rule.filter.fwmark)
3168 zpr.rule.filter.filter_bm |= PBR_FILTER_FWMARK;
3169
4719fd76
QY		 3170 if (!(zpr.rule.filter.src_ip.family == AF_INET
3171 || zpr.rule.filter.src_ip.family == AF_INET6)) {
cc815be7 3172 zlog_warn(
6cde4b45 3173 "Unsupported PBR source IP family: %s (%hhu)",
cc815be7
QY		 3174 family2str(zpr.rule.filter.src_ip.family),
3175 zpr.rule.filter.src_ip.family);
4719fd76
QY		 3176 return;
3177 }
3178 if (!(zpr.rule.filter.dst_ip.family == AF_INET
3179 || zpr.rule.filter.dst_ip.family == AF_INET6)) {
cec72d49 3180 zlog_warn(
6cde4b45 3181 "Unsupported PBR destination IP family: %s (%hhu)",
cec72d49
DA		 3182 family2str(zpr.rule.filter.dst_ip.family),
3183 zpr.rule.filter.dst_ip.family);
4719fd76
QY		 3184 return;
3185 }
3186
3187
7f0ea8a4 3188 zpr.vrf_id = zvrf->vrf->vrf_id;
bf094f69 3189 if (hdr->command == ZEBRA_RULE_ADD)
7f0ea8a4 3190 zebra_pbr_add_rule(&zpr);
bf094f69 3191 else
7f0ea8a4 3192 zebra_pbr_del_rule(&zpr);
bf094f69
QY		 3193 }
3194
3195stream_failure:
3196 return;
3197}
3198
3199static inline void zread_ipset(ZAPI_HANDLER_ARGS)
3200{
3201 struct zebra_pbr_ipset zpi;
3202 struct stream *s;
3203 uint32_t total, i;
3204
3205 s = msg;
3206 STREAM_GETL(s, total);
3207
3208 for (i = 0; i < total; i++) {
3209 memset(&zpi, 0, sizeof(zpi));
3210
3211 zpi.sock = client->sock;
be2028d1 3212 zpi.vrf_id = zvrf->vrf->vrf_id;
bf094f69
QY		 3213 STREAM_GETL(s, zpi.unique);
3214 STREAM_GETL(s, zpi.type);
a60b7031 3215 STREAM_GETC(s, zpi.family);
bf094f69
QY		 3216 STREAM_GET(&zpi.ipset_name, s, ZEBRA_IPSET_NAME_SIZE);
3217
3218 if (hdr->command == ZEBRA_IPSET_CREATE)
62f20a52 3219 zebra_pbr_create_ipset(&zpi);
bf094f69 3220 else
62f20a52 3221 zebra_pbr_destroy_ipset(&zpi);
bf094f69
QY		 3222 }
3223
3224stream_failure:
3225 return;
3226}
3227
3228static inline void zread_ipset_entry(ZAPI_HANDLER_ARGS)
3229{
3230 struct zebra_pbr_ipset_entry zpi;
3231 struct zebra_pbr_ipset ipset;
3232 struct stream *s;
3233 uint32_t total, i;
3234
3235 s = msg;
3236 STREAM_GETL(s, total);
3237
3238 for (i = 0; i < total; i++) {
3239 memset(&zpi, 0, sizeof(zpi));
3240 memset(&ipset, 0, sizeof(ipset));
3241
3242 zpi.sock = client->sock;
3243 STREAM_GETL(s, zpi.unique);
3244 STREAM_GET(&ipset.ipset_name, s, ZEBRA_IPSET_NAME_SIZE);
261462c3 3245 ipset.ipset_name[ZEBRA_IPSET_NAME_SIZE - 1] = '\0';
bf094f69
QY		 3246 STREAM_GETC(s, zpi.src.family);
3247 STREAM_GETC(s, zpi.src.prefixlen);
3248 STREAM_GET(&zpi.src.u.prefix, s, prefix_blen(&zpi.src));
3249 STREAM_GETC(s, zpi.dst.family);
3250 STREAM_GETC(s, zpi.dst.prefixlen);
3251 STREAM_GET(&zpi.dst.u.prefix, s, prefix_blen(&zpi.dst));
3252
25d760c5
PG		 3253 STREAM_GETW(s, zpi.src_port_min);
3254 STREAM_GETW(s, zpi.src_port_max);
3255 STREAM_GETW(s, zpi.dst_port_min);
3256 STREAM_GETW(s, zpi.dst_port_max);
3257 STREAM_GETC(s, zpi.proto);
bf094f69
QY		 3258 if (!is_default_prefix(&zpi.src))
3259 zpi.filter_bm |= PBR_FILTER_SRC_IP;
3260
3261 if (!is_default_prefix(&zpi.dst))
3262 zpi.filter_bm |= PBR_FILTER_DST_IP;
be729dd7 3263 if (zpi.dst_port_min != 0 || zpi.proto == IPPROTO_ICMP)
25d760c5 3264 zpi.filter_bm |= PBR_FILTER_DST_PORT;
be729dd7 3265 if (zpi.src_port_min != 0 || zpi.proto == IPPROTO_ICMP)
25d760c5
PG		 3266 zpi.filter_bm |= PBR_FILTER_SRC_PORT;
3267 if (zpi.dst_port_max != 0)
3268 zpi.filter_bm |= PBR_FILTER_DST_PORT_RANGE;
3269 if (zpi.src_port_max != 0)
3270 zpi.filter_bm |= PBR_FILTER_SRC_PORT_RANGE;
3271 if (zpi.proto != 0)
3272 zpi.filter_bm |= PBR_FILTER_PROTO;
bf094f69 3273
9863725c
QY		 3274 if (!(zpi.dst.family == AF_INET
3275 || zpi.dst.family == AF_INET6)) {
cec72d49 3276 zlog_warn(
6cde4b45 3277 "Unsupported PBR destination IP family: %s (%hhu)",
cec72d49 3278 family2str(zpi.dst.family), zpi.dst.family);
9863725c
QY		 3279 goto stream_failure;
3280 }
3281 if (!(zpi.src.family == AF_INET
3282 || zpi.src.family == AF_INET6)) {
cec72d49 3283 zlog_warn(
6cde4b45 3284 "Unsupported PBR source IP family: %s (%hhu)",
cec72d49 3285 family2str(zpi.src.family), zpi.src.family);
9863725c
QY		 3286 goto stream_failure;
3287 }
3288
bf094f69 3289 /* calculate backpointer */
62f20a52
DS		 3290 zpi.backpointer =
3291 zebra_pbr_lookup_ipset_pername(ipset.ipset_name);
f096bae4
DS		 3292
3293 if (!zpi.backpointer) {
3294 zlog_warn("ipset name specified: %s does not exist",
3295 ipset.ipset_name);
3296 goto stream_failure;
3297 }
3298
bf094f69 3299 if (hdr->command == ZEBRA_IPSET_ENTRY_ADD)
62f20a52 3300 zebra_pbr_add_ipset_entry(&zpi);
bf094f69 3301 else
62f20a52 3302 zebra_pbr_del_ipset_entry(&zpi);
bf094f69
QY		 3303 }
3304
3305stream_failure:
3306 return;
3307}
3308
05657ec2 3309
7723e8d3
PG		 3310static inline void zebra_neigh_register(ZAPI_HANDLER_ARGS)
3311{
3312 afi_t afi;
3313
3314 STREAM_GETW(msg, afi);
3315 if (afi <= AFI_UNSPEC || afi >= AFI_MAX) {
3316 zlog_warn(
3317 "Invalid AFI %u while registering for neighbors notifications",
3318 afi);
3319 goto stream_failure;
3320 }
3321 vrf_bitmap_set(client->nhrp_neighinfo[afi], zvrf_id(zvrf));
3322stream_failure:
3323 return;
3324}
3325
3326static inline void zebra_neigh_unregister(ZAPI_HANDLER_ARGS)
3327{
3328 afi_t afi;
3329
3330 STREAM_GETW(msg, afi);
3331 if (afi <= AFI_UNSPEC || afi >= AFI_MAX) {
3332 zlog_warn(
3333 "Invalid AFI %u while unregistering from neighbor notifications",
3334 afi);
3335 goto stream_failure;
3336 }
3337 vrf_bitmap_unset(client->nhrp_neighinfo[afi], zvrf_id(zvrf));
3338stream_failure:
3339 return;
3340}
3341
d17af8dd
PG		 3342static inline void zebra_gre_get(ZAPI_HANDLER_ARGS)
3343{
3344 struct stream *s;
3345 ifindex_t idx;
3346 struct interface *ifp;
3347 struct zebra_if *zebra_if = NULL;
3348 struct zebra_l2info_gre *gre_info;
3349 struct interface *ifp_link = NULL;
3350 vrf_id_t vrf_id_link = VRF_UNKNOWN;
3351 vrf_id_t vrf_id = zvrf->vrf->vrf_id;
3352
3353 s = msg;
3354 STREAM_GETL(s, idx);
3355 ifp = if_lookup_by_index(idx, vrf_id);
3356
3357 if (ifp)
3358 zebra_if = ifp->info;
3359
3360 s = stream_new(ZEBRA_MAX_PACKET_SIZ);
3361
3362 zclient_create_header(s, ZEBRA_GRE_UPDATE, vrf_id);
3363
3364 if (ifp && IS_ZEBRA_IF_GRE(ifp) && zebra_if) {
3365 gre_info = &zebra_if->l2info.gre;
3366
3367 stream_putl(s, idx);
3368 stream_putl(s, gre_info->ikey);
3369 stream_putl(s, gre_info->ikey);
3370 stream_putl(s, gre_info->ifindex_link);
3371
3372 ifp_link = if_lookup_by_index_per_ns(
3373 zebra_ns_lookup(gre_info->link_nsid),
3374 gre_info->ifindex_link);
3375 if (ifp_link)
3376 vrf_id_link = ifp_link->vrf_id;
3377 stream_putl(s, vrf_id_link);
3378 stream_putl(s, gre_info->vtep_ip.s_addr);
3379 stream_putl(s, gre_info->vtep_ip_remote.s_addr);
3380 } else {
3381 stream_putl(s, idx);
3382 stream_putl(s, 0);
3383 stream_putl(s, 0);
3384 stream_putl(s, IFINDEX_INTERNAL);
3385 stream_putl(s, VRF_UNKNOWN);
3386 stream_putl(s, 0);
3387 }
3388 /* Write packet size. */
3389 stream_putw_at(s, 0, stream_get_endp(s));
3390 zserv_send_message(client, s);
3391
3392 return;
3393 stream_failure:
3394 return;
3395}
3396
541025d6
PG		 3397static inline void zebra_configure_arp(ZAPI_HANDLER_ARGS)
3398{
3399 struct stream *s;
e18747a9 3400 uint8_t fam;
541025d6
PG		 3401 ifindex_t idx;
3402 struct interface *ifp;
541025d6
PG		 3403
3404 s = msg;
3405 STREAM_GETC(s, fam);
3406 if (fam != AF_INET && fam != AF_INET6)
3407 return;
3408 STREAM_GETL(s, idx);
3409 ifp = if_lookup_by_index_per_ns(zvrf->zns, idx);
3410 if (!ifp)
3411 return;
e18747a9 3412 dplane_neigh_table_update(ifp, fam, 1, 0, 0);
541025d6
PG		 3413stream_failure:
3414 return;
3415}
3416
d603c077 3417static inline void zebra_neigh_ip_add(ZAPI_HANDLER_ARGS)
05657ec2
PG		 3418{
3419 struct stream *s;
d603c077 3420 struct zapi_neigh_ip api = {};
05657ec2 3421 int ret;
0a27a2fe 3422 const struct interface *ifp;
05657ec2
PG		 3423
3424 s = msg;
d603c077 3425 ret = zclient_neigh_ip_decode(s, &api);
05657ec2
PG		 3426 if (ret < 0)
3427 return;
0a27a2fe
PG		 3428 ifp = if_lookup_by_index(api.index, zvrf_id(zvrf));
3429 if (!ifp)
3430 return;
3431 dplane_neigh_ip_update(DPLANE_OP_NEIGH_IP_INSTALL, ifp, &api.ip_out,
d603c077 3432 &api.ip_in, api.ndm_state, client->proto);
05657ec2
PG		 3433}
3434
0a27a2fe 3435
d603c077 3436static inline void zebra_neigh_ip_del(ZAPI_HANDLER_ARGS)
05657ec2
PG		 3437{
3438 struct stream *s;
d603c077 3439 struct zapi_neigh_ip api = {};
05657ec2 3440 int ret;
0a27a2fe 3441 struct interface *ifp;
05657ec2 3442
05657ec2 3443 s = msg;
d603c077 3444 ret = zclient_neigh_ip_decode(s, &api);
05657ec2
PG		 3445 if (ret < 0)
3446 return;
0a27a2fe
PG		 3447 ifp = if_lookup_by_index(api.index, zvrf_id(zvrf));
3448 if (!ifp)
3449 return;
3450 dplane_neigh_ip_update(DPLANE_OP_NEIGH_IP_DELETE, ifp, &api.ip_out,
d603c077 3451 &api.ip_in, api.ndm_state, client->proto);
05657ec2
PG		 3452}
3453
3454
bf094f69
QY		 3455static inline void zread_iptable(ZAPI_HANDLER_ARGS)
3456{
8b5c4dce
QY		 3457 struct zebra_pbr_iptable *zpi =
3458 XCALLOC(MTYPE_TMP, sizeof(struct zebra_pbr_iptable));
bf094f69
QY		 3459 struct stream *s;
3460
3461 s = msg;
3462
8b5c4dce
QY		 3463 zpi->interface_name_list = list_new();
3464 zpi->sock = client->sock;
3465 zpi->vrf_id = zvrf->vrf->vrf_id;
3466 STREAM_GETL(s, zpi->unique);
3467 STREAM_GETL(s, zpi->type);
3468 STREAM_GETL(s, zpi->filter_bm);
3469 STREAM_GETL(s, zpi->action);
3470 STREAM_GETL(s, zpi->fwmark);
3471 STREAM_GET(&zpi->ipset_name, s, ZEBRA_IPSET_NAME_SIZE);
a60b7031 3472 STREAM_GETC(s, zpi->family);
8b5c4dce
QY		 3473 STREAM_GETW(s, zpi->pkt_len_min);
3474 STREAM_GETW(s, zpi->pkt_len_max);
3475 STREAM_GETW(s, zpi->tcp_flags);
3476 STREAM_GETW(s, zpi->tcp_mask_flags);
3477 STREAM_GETC(s, zpi->dscp_value);
3478 STREAM_GETC(s, zpi->fragment);
3479 STREAM_GETC(s, zpi->protocol);
a60b7031 3480 STREAM_GETW(s, zpi->flow_label);
8b5c4dce
QY		 3481 STREAM_GETL(s, zpi->nb_interface);
3482 zebra_pbr_iptable_update_interfacelist(s, zpi);
bf094f69
QY		 3483
3484 if (hdr->command == ZEBRA_IPTABLE_ADD)
8b5c4dce 3485 zebra_pbr_add_iptable(zpi);
bf094f69 3486 else
8b5c4dce
QY		 3487 zebra_pbr_del_iptable(zpi);
3488
bf094f69 3489stream_failure:
8b5c4dce
QY		 3490 zebra_pbr_iptable_free(zpi);
3491 zpi = NULL;
bf094f69
QY		 3492 return;
3493}
3494
d68e74b4
JU		 3495static inline void zread_neigh_discover(ZAPI_HANDLER_ARGS)
3496{
3497 struct stream *s;
3498 ifindex_t ifindex;
3499 struct interface *ifp;
3500 struct prefix p;
3501 struct ipaddr ip;
3502
3503 s = msg;
3504
3505 STREAM_GETL(s, ifindex);
3506
3507 ifp = if_lookup_by_index_per_ns(zvrf->zns, ifindex);
3508 if (!ifp) {
3509 zlog_debug("Failed to lookup ifindex: %u", ifindex);
3510 return;
3511 }
3512
3513 STREAM_GETC(s, p.family);
3514 STREAM_GETC(s, p.prefixlen);
3515 STREAM_GET(&p.u.prefix, s, prefix_blen(&p));
3516
3517 if (p.family == AF_INET)
3518 SET_IPADDR_V4(&ip);
3519 else
3520 SET_IPADDR_V6(&ip);
3521
3522 memcpy(&ip.ip.addr, &p.u.prefix, prefix_blen(&p));
3523
3524 dplane_neigh_discover(ifp, &ip);
3525
3526stream_failure:
3527 return;
3528}
3529
b716ab61
PG		 3530static inline void zebra_gre_source_set(ZAPI_HANDLER_ARGS)
3531{
3532 struct stream *s;
3533 ifindex_t idx, link_idx;
3534 vrf_id_t link_vrf_id;
3535 struct interface *ifp;
3536 struct interface *ifp_link;
b716ab61 3537 vrf_id_t vrf_id = zvrf->vrf->vrf_id;
62b4b7e4
PG		 3538 struct zebra_if *zif, *gre_zif;
3539 struct zebra_l2info_gre *gre_info;
db51f0cd 3540 unsigned int mtu;
b716ab61
PG		 3541
3542 s = msg;
3543 STREAM_GETL(s, idx);
3544 ifp = if_lookup_by_index(idx, vrf_id);
3545 STREAM_GETL(s, link_idx);
3546 STREAM_GETL(s, link_vrf_id);
db51f0cd 3547 STREAM_GETL(s, mtu);
62b4b7e4 3548
b716ab61
PG		 3549 ifp_link = if_lookup_by_index(link_idx, link_vrf_id);
3550 if (!ifp_link || !ifp) {
3551 zlog_warn("GRE (index %u, VRF %u) or GRE link interface (index %u, VRF %u) not found, when setting GRE params",
3552 idx, vrf_id, link_idx, link_vrf_id);
3553 return;
3554 }
62b4b7e4
PG		 3555
3556 if (!IS_ZEBRA_IF_GRE(ifp))
3557 return;
3558
3559 gre_zif = (struct zebra_if *)ifp->info;
3560 zif = (struct zebra_if *)ifp_link->info;
3561 if (!zif || !gre_zif)
3562 return;
3563
3564 gre_info = &zif->l2info.gre;
3565 if (!gre_info)
3566 return;
3567
db51f0cd
PG		 3568 if (!mtu)
3569 mtu = ifp->mtu;
3570
3571 /* if gre link already set or mtu did not change, do not set it */
3572 if (gre_zif->link && gre_zif->link == ifp_link && mtu == ifp->mtu)
62b4b7e4
PG		 3573 return;
3574
e3d3fa06 3575 dplane_gre_set(ifp, ifp_link, mtu, gre_info);
b716ab61
PG		 3576
3577 stream_failure:
3578 return;
3579}
3580
9ab0b2a3
SW		 3581static void zsend_error_msg(struct zserv *client, enum zebra_error_types error,
3582 struct zmsghdr *bad_hdr)
3583{
3584
3585 struct stream *s = stream_new(ZEBRA_MAX_PACKET_SIZ);
3586
3587 zclient_create_header(s, ZEBRA_ERROR, bad_hdr->vrf_id);
3588
3589 zserv_encode_error(s, error);
3590
3591 client->error_cnt++;
3592 zserv_send_message(client, s);
3593}
3594
3595static void zserv_error_no_vrf(ZAPI_HANDLER_ARGS)
3596{
3597 if (IS_ZEBRA_DEBUG_PACKET && IS_ZEBRA_DEBUG_RECV)
3598 zlog_debug("ZAPI message specifies unknown VRF: %d",
3599 hdr->vrf_id);
3600
5ee080f0 3601 zsend_error_msg(client, ZEBRA_NO_VRF, hdr);
9ab0b2a3
SW		 3602}
3603
3604static void zserv_error_invalid_msg_type(ZAPI_HANDLER_ARGS)
3605{
3606 zlog_info("Zebra received unknown command %d", hdr->command);
3607
5ee080f0 3608 zsend_error_msg(client, ZEBRA_INVALID_MSG_TYPE, hdr);
9ab0b2a3
SW		 3609}
3610
2b64873d 3611void (*const zserv_handlers[])(ZAPI_HANDLER_ARGS) = {
bf094f69
QY		 3612 [ZEBRA_ROUTER_ID_ADD] = zread_router_id_add,
3613 [ZEBRA_ROUTER_ID_DELETE] = zread_router_id_delete,
3614 [ZEBRA_INTERFACE_ADD] = zread_interface_add,
3615 [ZEBRA_INTERFACE_DELETE] = zread_interface_delete,
c3bd894e 3616 [ZEBRA_INTERFACE_SET_PROTODOWN] = zread_interface_set_protodown,
bf094f69
QY		 3617 [ZEBRA_ROUTE_ADD] = zread_route_add,
3618 [ZEBRA_ROUTE_DELETE] = zread_route_del,
bf094f69
QY		 3619 [ZEBRA_REDISTRIBUTE_ADD] = zebra_redistribute_add,
3620 [ZEBRA_REDISTRIBUTE_DELETE] = zebra_redistribute_delete,
3621 [ZEBRA_REDISTRIBUTE_DEFAULT_ADD] = zebra_redistribute_default_add,
3622 [ZEBRA_REDISTRIBUTE_DEFAULT_DELETE] = zebra_redistribute_default_delete,
3623 [ZEBRA_IPV4_NEXTHOP_LOOKUP_MRIB] = zread_ipv4_nexthop_lookup_mrib,
3624 [ZEBRA_HELLO] = zread_hello,
3625 [ZEBRA_NEXTHOP_REGISTER] = zread_rnh_register,
3626 [ZEBRA_NEXTHOP_UNREGISTER] = zread_rnh_unregister,
3627 [ZEBRA_IMPORT_ROUTE_REGISTER] = zread_rnh_register,
3628 [ZEBRA_IMPORT_ROUTE_UNREGISTER] = zread_rnh_unregister,
3629 [ZEBRA_BFD_DEST_UPDATE] = zebra_ptm_bfd_dst_register,
3630 [ZEBRA_BFD_DEST_REGISTER] = zebra_ptm_bfd_dst_register,
3631 [ZEBRA_BFD_DEST_DEREGISTER] = zebra_ptm_bfd_dst_deregister,
d3af6147
RZ		 3632#if HAVE_BFDD > 0
3633 [ZEBRA_BFD_DEST_REPLAY] = zebra_ptm_bfd_dst_replay,
3634#endif /* HAVE_BFDD */
bf094f69
QY		 3635 [ZEBRA_VRF_UNREGISTER] = zread_vrf_unregister,
3636 [ZEBRA_VRF_LABEL] = zread_vrf_label,
3637 [ZEBRA_BFD_CLIENT_REGISTER] = zebra_ptm_bfd_client_register,
bf094f69
QY		 3638 [ZEBRA_INTERFACE_ENABLE_RADV] = zebra_interface_radv_enable,
3639 [ZEBRA_INTERFACE_DISABLE_RADV] = zebra_interface_radv_disable,
31f937fb
SM		 3640 [ZEBRA_SR_POLICY_SET] = zread_sr_policy_set,
3641 [ZEBRA_SR_POLICY_DELETE] = zread_sr_policy_delete,
ea6b290b
RW		 3642 [ZEBRA_MPLS_LABELS_ADD] = zread_mpls_labels_add,
3643 [ZEBRA_MPLS_LABELS_DELETE] = zread_mpls_labels_delete,
3644 [ZEBRA_MPLS_LABELS_REPLACE] = zread_mpls_labels_replace,
bf094f69
QY		 3645 [ZEBRA_IPMR_ROUTE_STATS] = zebra_ipmr_route_stats,
3646 [ZEBRA_LABEL_MANAGER_CONNECT] = zread_label_manager_request,
f533be73 3647 [ZEBRA_LABEL_MANAGER_CONNECT_ASYNC] = zread_label_manager_request,
bf094f69
QY		 3648 [ZEBRA_GET_LABEL_CHUNK] = zread_label_manager_request,
3649 [ZEBRA_RELEASE_LABEL_CHUNK] = zread_label_manager_request,
3650 [ZEBRA_FEC_REGISTER] = zread_fec_register,
3651 [ZEBRA_FEC_UNREGISTER] = zread_fec_unregister,
3652 [ZEBRA_ADVERTISE_DEFAULT_GW] = zebra_vxlan_advertise_gw_macip,
278e26de 3653 [ZEBRA_ADVERTISE_SVI_MACIP] = zebra_vxlan_advertise_svi_macip,
bf094f69
QY		 3654 [ZEBRA_ADVERTISE_SUBNET] = zebra_vxlan_advertise_subnet,
3655 [ZEBRA_ADVERTISE_ALL_VNI] = zebra_vxlan_advertise_all_vni,
ce5160c0
AK		 3656 [ZEBRA_REMOTE_ES_VTEP_ADD] = zebra_evpn_proc_remote_es,
3657 [ZEBRA_REMOTE_ES_VTEP_DEL] = zebra_evpn_proc_remote_es,
bf094f69
QY		 3658 [ZEBRA_REMOTE_VTEP_ADD] = zebra_vxlan_remote_vtep_add,
3659 [ZEBRA_REMOTE_VTEP_DEL] = zebra_vxlan_remote_vtep_del,
3660 [ZEBRA_REMOTE_MACIP_ADD] = zebra_vxlan_remote_macip_add,
3661 [ZEBRA_REMOTE_MACIP_DEL] = zebra_vxlan_remote_macip_del,
3950b52c 3662 [ZEBRA_DUPLICATE_ADDR_DETECTION] = zebra_vxlan_dup_addr_detection,
bf094f69
QY		 3663 [ZEBRA_INTERFACE_SET_MASTER] = zread_interface_set_master,
3664 [ZEBRA_PW_ADD] = zread_pseudowire,
3665 [ZEBRA_PW_DELETE] = zread_pseudowire,
3666 [ZEBRA_PW_SET] = zread_pseudowire,
3667 [ZEBRA_PW_UNSET] = zread_pseudowire,
3668 [ZEBRA_RULE_ADD] = zread_rule,
3669 [ZEBRA_RULE_DELETE] = zread_rule,
3670 [ZEBRA_TABLE_MANAGER_CONNECT] = zread_table_manager_request,
3671 [ZEBRA_GET_TABLE_CHUNK] = zread_table_manager_request,
3672 [ZEBRA_RELEASE_TABLE_CHUNK] = zread_table_manager_request,
3673 [ZEBRA_IPSET_CREATE] = zread_ipset,
3674 [ZEBRA_IPSET_DESTROY] = zread_ipset,
3675 [ZEBRA_IPSET_ENTRY_ADD] = zread_ipset_entry,
3676 [ZEBRA_IPSET_ENTRY_DELETE] = zread_ipset_entry,
3677 [ZEBRA_IPTABLE_ADD] = zread_iptable,
3678 [ZEBRA_IPTABLE_DELETE] = zread_iptable,
fbac9605 3679 [ZEBRA_VXLAN_FLOOD_CONTROL] = zebra_vxlan_flood_control,
ecbbc3a7 3680 [ZEBRA_VXLAN_SG_REPLAY] = zebra_vxlan_sg_replay,
ee235396
SK		 3681 [ZEBRA_MLAG_CLIENT_REGISTER] = zebra_mlag_client_register,
3682 [ZEBRA_MLAG_CLIENT_UNREGISTER] = zebra_mlag_client_unregister,
3683 [ZEBRA_MLAG_FORWARD_MSG] = zebra_mlag_forward_client_msg,
6e68a084
HS		 3684 [ZEBRA_SRV6_MANAGER_GET_LOCATOR_CHUNK] = zread_srv6_manager_request,
3685 [ZEBRA_SRV6_MANAGER_RELEASE_LOCATOR_CHUNK] = zread_srv6_manager_request,
d68e74b4 3686 [ZEBRA_CLIENT_CAPABILITIES] = zread_client_capabilities,
2f35a820 3687 [ZEBRA_NEIGH_DISCOVER] = zread_neigh_discover,
8b2d3a0f 3688 [ZEBRA_NHG_ADD] = zread_nhg_add,
2f35a820 3689 [ZEBRA_NHG_DEL] = zread_nhg_del,
77b38a4a 3690 [ZEBRA_ROUTE_NOTIFY_REQUEST] = zread_route_notify_request,
7bfa7d02
AK		 3691 [ZEBRA_EVPN_REMOTE_NH_ADD] = zebra_evpn_proc_remote_nh,
3692 [ZEBRA_EVPN_REMOTE_NH_DEL] = zebra_evpn_proc_remote_nh,
d603c077
PG		 3693 [ZEBRA_NEIGH_IP_ADD] = zebra_neigh_ip_add,
3694 [ZEBRA_NEIGH_IP_DEL] = zebra_neigh_ip_del,
7723e8d3
PG		 3695 [ZEBRA_NHRP_NEIGH_REGISTER] = zebra_neigh_register,
3696 [ZEBRA_NHRP_NEIGH_UNREGISTER] = zebra_neigh_unregister,
541025d6 3697 [ZEBRA_CONFIGURE_ARP] = zebra_configure_arp,
d17af8dd 3698 [ZEBRA_GRE_GET] = zebra_gre_get,
b716ab61 3699 [ZEBRA_GRE_SOURCE_SET] = zebra_gre_source_set,
2f35a820 3700};
bf094f69 3701
79b3664a
MS		 3702/*
3703 * Process a batch of zapi messages.
3704 */
3705void zserv_handle_commands(struct zserv *client, struct stream_fifo *fifo)
bf094f69 3706{
904e0d88
QY		 3707 struct zmsghdr hdr;
3708 struct zebra_vrf *zvrf;
79b3664a
MS		 3709 struct stream *msg;
3710 struct stream_fifo temp_fifo;
904e0d88 3711
79b3664a 3712 stream_fifo_init(&temp_fifo);
aa8cb964 3713
79b3664a
MS		 3714 while (stream_fifo_head(fifo)) {
3715 msg = stream_fifo_pop(fifo);
bf094f69 3716
79b3664a
MS		 3717 if (STREAM_READABLE(msg) > ZEBRA_MAX_PACKET_SIZ) {
3718 if (IS_ZEBRA_DEBUG_PACKET && IS_ZEBRA_DEBUG_RECV)
3719 zlog_debug(
3720 "ZAPI message is %zu bytes long but the maximum packet size is %u; dropping",
3721 STREAM_READABLE(msg),
3722 ZEBRA_MAX_PACKET_SIZ);
3723 goto continue_loop;
3724 }
3725
3726 zapi_parse_header(msg, &hdr);
3727
ec64a77b
DS		 3728 if (IS_ZEBRA_DEBUG_PACKET && IS_ZEBRA_DEBUG_RECV
3729 && IS_ZEBRA_DEBUG_DETAIL)
79b3664a 3730 zserv_log_message(NULL, msg, &hdr);
49b3b01f 3731
79b3664a 3732 hdr.length -= ZEBRA_HEADER_SIZE;
904e0d88 3733
79b3664a
MS		 3734 /* Before checking for a handler function, check for
3735 * special messages that are handled in another module;
3736 * we'll treat these as opaque.
3737 */
3738 if (zebra_opaque_handles_msgid(hdr.command)) {
3739 /* Reset message buffer */
3740 stream_set_getp(msg, 0);
3741
3742 stream_fifo_push(&temp_fifo, msg);
3743
3744 /* Continue without freeing the message */
3745 msg = NULL;
3746 goto continue_loop;
3747 }
3748
3749 /* lookup vrf */
3750 zvrf = zebra_vrf_lookup_by_id(hdr.vrf_id);
3751 if (!zvrf) {
3752 zserv_error_no_vrf(client, &hdr, msg, zvrf);
3753 goto continue_loop;
3754 }
3755
3756 if (hdr.command >= array_size(zserv_handlers)
3757 || zserv_handlers[hdr.command] == NULL) {
3758 zserv_error_invalid_msg_type(client, &hdr, msg, zvrf);
3759 goto continue_loop;
3760 }
3761
3762 zserv_handlers[hdr.command](client, &hdr, msg, zvrf);
3763
3764continue_loop:
3765 stream_free(msg);
3766 }
904e0d88 3767
79b3664a
MS		 3768 /* Dispatch any special messages from the temp fifo */
3769 if (stream_fifo_head(&temp_fifo) != NULL)
3770 zebra_opaque_enqueue_batch(&temp_fifo);
9ab0b2a3 3771
79b3664a 3772 stream_fifo_deinit(&temp_fifo);
bf094f69 3773}
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