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lib: add zapi encode/decode func for srv6 locator
[mirror_frr.git] / zebra / zapi_msg.c
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bf094f69 1/*
d8647095 2 * Zebra API message creation & consumption.
bf094f69
QY		 3 * Portions:
4 * Copyright (C) 1997-1999 Kunihiro Ishiguro
5 * Copyright (C) 2015-2018 Cumulus Networks, Inc.
6 * et al.
7 *
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of the GNU General Public License as published by the Free
10 * Software Foundation; either version 2 of the License, or (at your option)
11 * any later version.
12 *
13 * This program is distributed in the hope that it will be useful, but WITHOUT
14 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
15 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
16 * more details.
17 *
18 * You should have received a copy of the GNU General Public License along
19 * with this program; see the file COPYING; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
21 */
22
23#include <zebra.h>
24#include <libgen.h>
25
26#include "lib/prefix.h"
bf094f69
QY		 27#include "lib/stream.h"
28#include "lib/memory.h"
29#include "lib/table.h"
30#include "lib/network.h"
bf094f69
QY		 31#include "lib/log.h"
32#include "lib/zclient.h"
33#include "lib/privs.h"
bf094f69
QY		 34#include "lib/nexthop.h"
35#include "lib/vrf.h"
36#include "lib/libfrr.h"
5e7939a5 37#include "lib/lib_errors.h"
bf094f69 38
161e9ab7 39#include "zebra/zebra_router.h"
bf094f69 40#include "zebra/rib.h"
bf094f69
QY		 41#include "zebra/zebra_ns.h"
42#include "zebra/zebra_vrf.h"
43#include "zebra/router-id.h"
44#include "zebra/redistribute.h"
45#include "zebra/debug.h"
46#include "zebra/zebra_rnh.h"
bf094f69
QY		 47#include "zebra/interface.h"
48#include "zebra/zebra_ptm.h"
49#include "zebra/rtadv.h"
50#include "zebra/zebra_mpls.h"
51#include "zebra/zebra_mroute.h"
bf094f69 52#include "zebra/zebra_vxlan.h"
ce5160c0 53#include "zebra/zebra_evpn_mh.h"
bf094f69
QY		 54#include "zebra/rt.h"
55#include "zebra/zebra_pbr.h"
56#include "zebra/table_manager.h"
57#include "zebra/zapi_msg.h"
364fed6b 58#include "zebra/zebra_errors.h"
02c0866d 59#include "zebra/zebra_mlag.h"
54bea4e5 60#include "zebra/connected.h"
79b3664a 61#include "zebra/zebra_opaque.h"
31f937fb 62#include "zebra/zebra_srte.h"
6e68a084 63#include "zebra/zebra_srv6.h"
bf094f69 64
224ccf29
DL		 65DEFINE_MTYPE_STATIC(ZEBRA, OPAQUE, "Opaque Data");
66
5898ce6f
MS		 67static int zapi_nhg_decode(struct stream *s, int cmd, struct zapi_nhg *api_nhg);
68
bf094f69
QY		 69/* Encoding helpers -------------------------------------------------------- */
70
71static void zserv_encode_interface(struct stream *s, struct interface *ifp)
72{
73 /* Interface information. */
53e60e5c 74 struct zebra_if *zif = ifp->info;
19c38250 75
bf094f69
QY		 76 stream_put(s, ifp->name, INTERFACE_NAMSIZ);
77 stream_putl(s, ifp->ifindex);
78 stream_putc(s, ifp->status);
79 stream_putq(s, ifp->flags);
80 stream_putc(s, ifp->ptm_enable);
81 stream_putc(s, ifp->ptm_status);
82 stream_putl(s, ifp->metric);
83 stream_putl(s, ifp->speed);
84 stream_putl(s, ifp->mtu);
85 stream_putl(s, ifp->mtu6);
86 stream_putl(s, ifp->bandwidth);
53e60e5c 87 stream_putl(s, zif->link_ifindex);
bf094f69
QY		 88 stream_putl(s, ifp->ll_type);
89 stream_putl(s, ifp->hw_addr_len);
90 if (ifp->hw_addr_len)
91 stream_put(s, ifp->hw_addr, ifp->hw_addr_len);
92
93 /* Then, Traffic Engineering parameters if any */
94 if (HAS_LINK_PARAMS(ifp) && IS_LINK_PARAMS_SET(ifp->link_params)) {
95 stream_putc(s, 1);
96 zebra_interface_link_params_write(s, ifp);
97 } else
98 stream_putc(s, 0);
99
100 /* Write packet size. */
101 stream_putw_at(s, 0, stream_get_endp(s));
102}
103
104static void zserv_encode_vrf(struct stream *s, struct zebra_vrf *zvrf)
105{
106 struct vrf_data data;
107 const char *netns_name = zvrf_ns_name(zvrf);
108
a013777a 109 memset(&data, 0, sizeof(data));
bf094f69
QY		 110 data.l.table_id = zvrf->table_id;
111
112 if (netns_name)
113 strlcpy(data.l.netns_name, basename((char *)netns_name),
114 NS_NAMSIZ);
115 else
116 memset(data.l.netns_name, 0, NS_NAMSIZ);
117 /* Pass the tableid and the netns NAME */
118 stream_put(s, &data, sizeof(struct vrf_data));
119 /* Interface information. */
120 stream_put(s, zvrf_name(zvrf), VRF_NAMSIZ);
121 /* Write packet size. */
122 stream_putw_at(s, 0, stream_get_endp(s));
123}
124
125static int zserv_encode_nexthop(struct stream *s, struct nexthop *nexthop)
126{
a756969d 127 stream_putl(s, nexthop->vrf_id);
bf094f69
QY		 128 stream_putc(s, nexthop->type);
129 switch (nexthop->type) {
130 case NEXTHOP_TYPE_IPV4:
131 case NEXTHOP_TYPE_IPV4_IFINDEX:
132 stream_put_in_addr(s, &nexthop->gate.ipv4);
133 stream_putl(s, nexthop->ifindex);
134 break;
135 case NEXTHOP_TYPE_IPV6:
136 stream_put(s, &nexthop->gate.ipv6, 16);
137 break;
138 case NEXTHOP_TYPE_IPV6_IFINDEX:
139 stream_put(s, &nexthop->gate.ipv6, 16);
140 stream_putl(s, nexthop->ifindex);
141 break;
142 case NEXTHOP_TYPE_IFINDEX:
143 stream_putl(s, nexthop->ifindex);
144 break;
145 default:
146 /* do nothing */
147 break;
148 }
149 return 1;
150}
151
9ab0b2a3
SW		 152/*
153 * Zebra error addition adds error type.
154 *
155 *
156 * 0 1
157 * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6
158 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
159 * | enum zebra_error_types |
160 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
161 *
162 */
163static void zserv_encode_error(struct stream *s, enum zebra_error_types error)
164{
165 stream_put(s, &error, sizeof(error));
166
167 /* Write packet size. */
168 stream_putw_at(s, 0, stream_get_endp(s));
169}
170
bf094f69
QY		 171/* Send handlers ----------------------------------------------------------- */
172
173/* Interface is added. Send ZEBRA_INTERFACE_ADD to client. */
174/*
175 * This function is called in the following situations:
176 * - in response to a 3-byte ZEBRA_INTERFACE_ADD request
177 * from the client.
178 * - at startup, when zebra figures out the available interfaces
179 * - when an interface is added (where support for
180 * RTM_IFANNOUNCE or AF_NETLINK sockets is available), or when
181 * an interface is marked IFF_UP (i.e., an RTM_IFINFO message is
182 * received)
183 */
184int zsend_interface_add(struct zserv *client, struct interface *ifp)
185{
186 struct stream *s = stream_new(ZEBRA_MAX_PACKET_SIZ);
187
a36898e7 188 zclient_create_header(s, ZEBRA_INTERFACE_ADD, ifp->vrf_id);
bf094f69
QY		 189 zserv_encode_interface(s, ifp);
190
191 client->ifadd_cnt++;
21ccc0cf 192 return zserv_send_message(client, s);
bf094f69
QY		 193}
194
195/* Interface deletion from zebra daemon. */
196int zsend_interface_delete(struct zserv *client, struct interface *ifp)
197{
198 struct stream *s = stream_new(ZEBRA_MAX_PACKET_SIZ);
199
a36898e7 200 zclient_create_header(s, ZEBRA_INTERFACE_DELETE, ifp->vrf_id);
bf094f69
QY		 201 zserv_encode_interface(s, ifp);
202
203 client->ifdel_cnt++;
21ccc0cf 204 return zserv_send_message(client, s);
bf094f69
QY		 205}
206
207int zsend_vrf_add(struct zserv *client, struct zebra_vrf *zvrf)
208{
209 struct stream *s = stream_new(ZEBRA_MAX_PACKET_SIZ);
210
211 zclient_create_header(s, ZEBRA_VRF_ADD, zvrf_id(zvrf));
212 zserv_encode_vrf(s, zvrf);
213
214 client->vrfadd_cnt++;
21ccc0cf 215 return zserv_send_message(client, s);
bf094f69
QY		 216}
217
218/* VRF deletion from zebra daemon. */
219int zsend_vrf_delete(struct zserv *client, struct zebra_vrf *zvrf)
220
221{
222 struct stream *s = stream_new(ZEBRA_MAX_PACKET_SIZ);
223
224 zclient_create_header(s, ZEBRA_VRF_DELETE, zvrf_id(zvrf));
225 zserv_encode_vrf(s, zvrf);
226
227 client->vrfdel_cnt++;
21ccc0cf 228 return zserv_send_message(client, s);
bf094f69
QY		 229}
230
231int zsend_interface_link_params(struct zserv *client, struct interface *ifp)
232{
233 struct stream *s = stream_new(ZEBRA_MAX_PACKET_SIZ);
234
bf094f69
QY		 235 if (!ifp->link_params) {
236 stream_free(s);
237 return 0;
238 }
239
a36898e7 240 zclient_create_header(s, ZEBRA_INTERFACE_LINK_PARAMS, ifp->vrf_id);
bf094f69
QY		 241
242 /* Add Interface Index */
243 stream_putl(s, ifp->ifindex);
244
245 /* Then TE Link Parameters */
246 if (zebra_interface_link_params_write(s, ifp) == 0) {
247 stream_free(s);
248 return 0;
249 }
250
251 /* Write packet size. */
252 stream_putw_at(s, 0, stream_get_endp(s));
253
21ccc0cf 254 return zserv_send_message(client, s);
bf094f69
QY		 255}
256
257/* Interface address is added/deleted. Send ZEBRA_INTERFACE_ADDRESS_ADD or
258 * ZEBRA_INTERFACE_ADDRESS_DELETE to the client.
259 *
260 * A ZEBRA_INTERFACE_ADDRESS_ADD is sent in the following situations:
261 * - in response to a 3-byte ZEBRA_INTERFACE_ADD request
262 * from the client, after the ZEBRA_INTERFACE_ADD has been
263 * sent from zebra to the client
264 * - redistribute new address info to all clients in the following situations
265 * - at startup, when zebra figures out the available interfaces
266 * - when an interface is added (where support for
267 * RTM_IFANNOUNCE or AF_NETLINK sockets is available), or when
268 * an interface is marked IFF_UP (i.e., an RTM_IFINFO message is
269 * received)
b1bd1015 270 * - for the vty commands "ip address A.B.C.D/M [<label LINE>]"
bf094f69
QY		 271 * and "no bandwidth <1-10000000>", "ipv6 address X:X::X:X/M"
272 * - when an RTM_NEWADDR message is received from the kernel,
273 *
274 * The call tree that triggers ZEBRA_INTERFACE_ADDRESS_DELETE:
275 *
276 * zsend_interface_address(DELETE)
277 * ^
278 * |
279 * zebra_interface_address_delete_update
280 * ^ ^ ^
281 * | | if_delete_update
282 * | |
283 * ip_address_uninstall connected_delete_ipv4
284 * [ipv6_addresss_uninstall] [connected_delete_ipv6]
285 * ^ ^
286 * | |
287 * | RTM_NEWADDR on routing/netlink socket
288 * |
289 * vty commands:
290 * "no ip address A.B.C.D/M [label LINE]"
b1bd1015 291 * "no ip address A.B.C.D/M"
bf094f69
QY		 292 * ["no ipv6 address X:X::X:X/M"]
293 *
294 */
295int zsend_interface_address(int cmd, struct zserv *client,
296 struct interface *ifp, struct connected *ifc)
297{
298 int blen;
299 struct prefix *p;
300 struct stream *s = stream_new(ZEBRA_MAX_PACKET_SIZ);
301
a36898e7 302 zclient_create_header(s, cmd, ifp->vrf_id);
bf094f69
QY		 303 stream_putl(s, ifp->ifindex);
304
305 /* Interface address flag. */
306 stream_putc(s, ifc->flags);
307
308 /* Prefix information. */
309 p = ifc->address;
310 stream_putc(s, p->family);
311 blen = prefix_blen(p);
312 stream_put(s, &p->u.prefix, blen);
313
314 /*
315 * XXX gnu version does not send prefixlen for
316 * ZEBRA_INTERFACE_ADDRESS_DELETE
317 * but zebra_interface_address_delete_read() in the gnu version
318 * expects to find it
319 */
320 stream_putc(s, p->prefixlen);
321
322 /* Destination. */
323 p = ifc->destination;
324 if (p)
325 stream_put(s, &p->u.prefix, blen);
326 else
327 stream_put(s, NULL, blen);
328
329 /* Write packet size. */
330 stream_putw_at(s, 0, stream_get_endp(s));
331
332 client->connected_rt_add_cnt++;
21ccc0cf 333 return zserv_send_message(client, s);
bf094f69
QY		 334}
335
336static int zsend_interface_nbr_address(int cmd, struct zserv *client,
337 struct interface *ifp,
338 struct nbr_connected *ifc)
339{
340 int blen;
341 struct stream *s = stream_new(ZEBRA_MAX_PACKET_SIZ);
342 struct prefix *p;
343
a36898e7 344 zclient_create_header(s, cmd, ifp->vrf_id);
bf094f69
QY		 345 stream_putl(s, ifp->ifindex);
346
347 /* Prefix information. */
348 p = ifc->address;
349 stream_putc(s, p->family);
350 blen = prefix_blen(p);
351 stream_put(s, &p->u.prefix, blen);
352
353 /*
354 * XXX gnu version does not send prefixlen for
355 * ZEBRA_INTERFACE_ADDRESS_DELETE
356 * but zebra_interface_address_delete_read() in the gnu version
357 * expects to find it
358 */
359 stream_putc(s, p->prefixlen);
360
361 /* Write packet size. */
362 stream_putw_at(s, 0, stream_get_endp(s));
363
21ccc0cf 364 return zserv_send_message(client, s);
bf094f69
QY		 365}
366
367/* Interface address addition. */
368static void zebra_interface_nbr_address_add_update(struct interface *ifp,
369 struct nbr_connected *ifc)
370{
371 struct listnode *node, *nnode;
372 struct zserv *client;
373 struct prefix *p;
374
375 if (IS_ZEBRA_DEBUG_EVENT) {
376 char buf[INET6_ADDRSTRLEN];
377
378 p = ifc->address;
379 zlog_debug(
380 "MESSAGE: ZEBRA_INTERFACE_NBR_ADDRESS_ADD %s/%d on %s",
381 inet_ntop(p->family, &p->u.prefix, buf,
382 INET6_ADDRSTRLEN),
383 p->prefixlen, ifc->ifp->name);
384 }
385
17da84a4
KS		 386 for (ALL_LIST_ELEMENTS(zrouter.client_list, node, nnode, client)) {
387 /* Do not send unsolicited messages to synchronous clients. */
388 if (client->synchronous)
389 continue;
390
bf094f69
QY		 391 zsend_interface_nbr_address(ZEBRA_INTERFACE_NBR_ADDRESS_ADD,
392 client, ifp, ifc);
17da84a4 393 }
bf094f69
QY		 394}
395
396/* Interface address deletion. */
397static void zebra_interface_nbr_address_delete_update(struct interface *ifp,
398 struct nbr_connected *ifc)
399{
400 struct listnode *node, *nnode;
401 struct zserv *client;
402 struct prefix *p;
403
404 if (IS_ZEBRA_DEBUG_EVENT) {
405 char buf[INET6_ADDRSTRLEN];
406
407 p = ifc->address;
408 zlog_debug(
409 "MESSAGE: ZEBRA_INTERFACE_NBR_ADDRESS_DELETE %s/%d on %s",
410 inet_ntop(p->family, &p->u.prefix, buf,
411 INET6_ADDRSTRLEN),
412 p->prefixlen, ifc->ifp->name);
413 }
414
17da84a4
KS		 415 for (ALL_LIST_ELEMENTS(zrouter.client_list, node, nnode, client)) {
416 /* Do not send unsolicited messages to synchronous clients. */
417 if (client->synchronous)
418 continue;
419
bf094f69
QY		 420 zsend_interface_nbr_address(ZEBRA_INTERFACE_NBR_ADDRESS_DELETE,
421 client, ifp, ifc);
17da84a4 422 }
bf094f69
QY		 423}
424
425/* Send addresses on interface to client */
426int zsend_interface_addresses(struct zserv *client, struct interface *ifp)
427{
428 struct listnode *cnode, *cnnode;
429 struct connected *c;
430 struct nbr_connected *nc;
431
432 /* Send interface addresses. */
433 for (ALL_LIST_ELEMENTS(ifp->connected, cnode, cnnode, c)) {
434 if (!CHECK_FLAG(c->conf, ZEBRA_IFC_REAL))
435 continue;
436
437 if (zsend_interface_address(ZEBRA_INTERFACE_ADDRESS_ADD, client,
438 ifp, c)
439 < 0)
440 return -1;
441 }
442
443 /* Send interface neighbors. */
444 for (ALL_LIST_ELEMENTS(ifp->nbr_connected, cnode, cnnode, nc)) {
445 if (zsend_interface_nbr_address(ZEBRA_INTERFACE_NBR_ADDRESS_ADD,
446 client, ifp, nc)
447 < 0)
448 return -1;
449 }
450
451 return 0;
452}
453
454/* Notify client about interface moving from one VRF to another.
455 * Whether client is interested in old and new VRF is checked by caller.
456 */
457int zsend_interface_vrf_update(struct zserv *client, struct interface *ifp,
458 vrf_id_t vrf_id)
459{
460 struct stream *s = stream_new(ZEBRA_MAX_PACKET_SIZ);
461
a36898e7 462 zclient_create_header(s, ZEBRA_INTERFACE_VRF_UPDATE, ifp->vrf_id);
bf094f69 463
91d227b7
RW		 464 /* Fill in the name of the interface and its new VRF (id) */
465 stream_put(s, ifp->name, INTERFACE_NAMSIZ);
bf094f69
QY		 466 stream_putl(s, vrf_id);
467
468 /* Write packet size. */
469 stream_putw_at(s, 0, stream_get_endp(s));
470
471 client->if_vrfchg_cnt++;
21ccc0cf 472 return zserv_send_message(client, s);
bf094f69
QY		 473}
474
475/* Add new nbr connected IPv6 address */
476void nbr_connected_add_ipv6(struct interface *ifp, struct in6_addr *address)
477{
478 struct nbr_connected *ifc;
479 struct prefix p;
480
481 p.family = AF_INET6;
a85297a7 482 IPV6_ADDR_COPY(&p.u.prefix6, address);
f4d81e55 483 p.prefixlen = IPV6_MAX_BITLEN;
bf094f69 484
8b1766b1
QY		 485 ifc = listnode_head(ifp->nbr_connected);
486 if (!ifc) {
bf094f69
QY		 487 /* new addition */
488 ifc = nbr_connected_new();
489 ifc->address = prefix_new();
490 ifc->ifp = ifp;
491 listnode_add(ifp->nbr_connected, ifc);
492 }
493
494 prefix_copy(ifc->address, &p);
495
496 zebra_interface_nbr_address_add_update(ifp, ifc);
497
498 if_nbr_ipv6ll_to_ipv4ll_neigh_update(ifp, address, 1);
499}
500
501void nbr_connected_delete_ipv6(struct interface *ifp, struct in6_addr *address)
502{
503 struct nbr_connected *ifc;
504 struct prefix p;
505
506 p.family = AF_INET6;
a85297a7 507 IPV6_ADDR_COPY(&p.u.prefix6, address);
f4d81e55 508 p.prefixlen = IPV6_MAX_BITLEN;
bf094f69
QY		 509
510 ifc = nbr_connected_check(ifp, &p);
511 if (!ifc)
512 return;
513
514 listnode_delete(ifp->nbr_connected, ifc);
515
516 zebra_interface_nbr_address_delete_update(ifp, ifc);
517
518 if_nbr_ipv6ll_to_ipv4ll_neigh_update(ifp, address, 0);
519
520 nbr_connected_free(ifc);
521}
522
523/*
524 * The cmd passed to zsend_interface_update may be ZEBRA_INTERFACE_UP or
525 * ZEBRA_INTERFACE_DOWN.
526 *
527 * The ZEBRA_INTERFACE_UP message is sent from the zebra server to
528 * the clients in one of 2 situations:
529 * - an if_up is detected e.g., as a result of an RTM_IFINFO message
530 * - a vty command modifying the bandwidth of an interface is received.
531 * The ZEBRA_INTERFACE_DOWN message is sent when an if_down is detected.
532 */
533int zsend_interface_update(int cmd, struct zserv *client, struct interface *ifp)
534{
535 struct stream *s = stream_new(ZEBRA_MAX_PACKET_SIZ);
536
a36898e7 537 zclient_create_header(s, cmd, ifp->vrf_id);
bf094f69
QY		 538 zserv_encode_interface(s, ifp);
539
540 if (cmd == ZEBRA_INTERFACE_UP)
541 client->ifup_cnt++;
542 else
543 client->ifdown_cnt++;
544
21ccc0cf 545 return zserv_send_message(client, s);
bf094f69
QY		 546}
547
86391e56
MS		 548int zsend_redistribute_route(int cmd, struct zserv *client,
549 const struct prefix *p,
40f321c0
MS		 550 const struct prefix *src_p,
551 const struct route_entry *re)
bf094f69
QY		 552{
553 struct zapi_route api;
554 struct zapi_nexthop *api_nh;
555 struct nexthop *nexthop;
9a0d4dd3 556 uint8_t count = 0;
34fa0870 557 afi_t afi;
f3f45626
DS		 558 size_t stream_size =
559 MAX(ZEBRA_MAX_PACKET_SIZ, sizeof(struct zapi_route));
bf094f69
QY		 560
561 memset(&api, 0, sizeof(api));
562 api.vrf_id = re->vrf_id;
563 api.type = re->type;
e4081c0e 564 api.safi = SAFI_UNICAST;
bf094f69
QY		 565 api.instance = re->instance;
566 api.flags = re->flags;
567
34fa0870
DS		 568 afi = family2afi(p->family);
569 switch (afi) {
570 case AFI_IP:
571 if (cmd == ZEBRA_REDISTRIBUTE_ROUTE_ADD)
572 client->redist_v4_add_cnt++;
573 else
574 client->redist_v4_del_cnt++;
575 break;
576 case AFI_IP6:
577 if (cmd == ZEBRA_REDISTRIBUTE_ROUTE_ADD)
578 client->redist_v6_add_cnt++;
579 else
580 client->redist_v6_del_cnt++;
581 break;
582 default:
583 break;
584 }
585
bf094f69
QY		 586 /* Prefix. */
587 api.prefix = *p;
588 if (src_p) {
589 SET_FLAG(api.message, ZAPI_MESSAGE_SRCPFX);
590 memcpy(&api.src_prefix, src_p, sizeof(api.src_prefix));
591 }
592
c415d895 593 for (nexthop = re->nhe->nhg.nexthop;
0eb97b86 594 nexthop; nexthop = nexthop->next) {
bf094f69
QY		 595 if (!CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE))
596 continue;
597
598 api_nh = &api.nexthops[count];
599 api_nh->vrf_id = nexthop->vrf_id;
600 api_nh->type = nexthop->type;
bd054c1a 601 api_nh->weight = nexthop->weight;
bf094f69
QY		 602 switch (nexthop->type) {
603 case NEXTHOP_TYPE_BLACKHOLE:
604 api_nh->bh_type = nexthop->bh_type;
605 break;
606 case NEXTHOP_TYPE_IPV4:
607 api_nh->gate.ipv4 = nexthop->gate.ipv4;
608 break;
609 case NEXTHOP_TYPE_IPV4_IFINDEX:
610 api_nh->gate.ipv4 = nexthop->gate.ipv4;
611 api_nh->ifindex = nexthop->ifindex;
612 break;
613 case NEXTHOP_TYPE_IFINDEX:
614 api_nh->ifindex = nexthop->ifindex;
615 break;
616 case NEXTHOP_TYPE_IPV6:
617 api_nh->gate.ipv6 = nexthop->gate.ipv6;
618 break;
619 case NEXTHOP_TYPE_IPV6_IFINDEX:
620 api_nh->gate.ipv6 = nexthop->gate.ipv6;
621 api_nh->ifindex = nexthop->ifindex;
622 }
623 count++;
624 }
625
9a0d4dd3
DS		 626 /* Nexthops. */
627 if (count) {
628 SET_FLAG(api.message, ZAPI_MESSAGE_NEXTHOP);
629 api.nexthop_num = count;
630 }
631
bf094f69
QY		 632 /* Attributes. */
633 SET_FLAG(api.message, ZAPI_MESSAGE_DISTANCE);
634 api.distance = re->distance;
635 SET_FLAG(api.message, ZAPI_MESSAGE_METRIC);
636 api.metric = re->metric;
637 if (re->tag) {
638 SET_FLAG(api.message, ZAPI_MESSAGE_TAG);
639 api.tag = re->tag;
640 }
641 SET_FLAG(api.message, ZAPI_MESSAGE_MTU);
642 api.mtu = re->mtu;
643
f3f45626 644 struct stream *s = stream_new(stream_size);
bf094f69
QY		 645
646 /* Encode route and send. */
647 if (zapi_route_encode(cmd, s, &api) < 0) {
648 stream_free(s);
649 return -1;
650 }
651
2dbe669b
DA		 652 if (IS_ZEBRA_DEBUG_SEND)
653 zlog_debug("%s: %s to client %s: type %s, vrf_id %d, p %pFX",
bf094f69
QY		 654 __func__, zserv_command_string(cmd),
655 zebra_route_string(client->proto),
656 zebra_route_string(api.type), api.vrf_id,
2dbe669b 657 &api.prefix);
21ccc0cf 658 return zserv_send_message(client, s);
bf094f69
QY		 659}
660
661/*
662 * Modified version of zsend_ipv4_nexthop_lookup(): Query unicast rib if
663 * nexthop is not found on mrib. Returns both route metric and protocol
664 * distance.
665 */
666static int zsend_ipv4_nexthop_lookup_mrib(struct zserv *client,
667 struct in_addr addr,
668 struct route_entry *re,
669 struct zebra_vrf *zvrf)
670{
671 struct stream *s;
672 unsigned long nump;
673 uint8_t num;
674 struct nexthop *nexthop;
675
676 /* Get output stream. */
677 s = stream_new(ZEBRA_MAX_PACKET_SIZ);
678 stream_reset(s);
679
680 /* Fill in result. */
681 zclient_create_header(s, ZEBRA_IPV4_NEXTHOP_LOOKUP_MRIB, zvrf_id(zvrf));
682 stream_put_in_addr(s, &addr);
683
684 if (re) {
b59839af
DS		 685 struct nexthop_group *nhg;
686
bf094f69
QY		 687 stream_putc(s, re->distance);
688 stream_putl(s, re->metric);
689 num = 0;
8b1766b1
QY		 690 /* remember position for nexthop_num */
691 nump = stream_get_endp(s);
692 /* reserve room for nexthop_num */
693 stream_putc(s, 0);
b59839af
DS		 694 nhg = rib_get_fib_nhg(re);
695 for (ALL_NEXTHOPS_PTR(nhg, nexthop)) {
696 if (rnh_nexthop_valid(re, nexthop))
bf094f69 697 num += zserv_encode_nexthop(s, nexthop);
b59839af 698 }
bf094f69 699
8b1766b1
QY		 700 /* store nexthop_num */
701 stream_putc_at(s, nump, num);
bf094f69
QY		 702 } else {
703 stream_putc(s, 0); /* distance */
704 stream_putl(s, 0); /* metric */
705 stream_putc(s, 0); /* nexthop_num */
706 }
707
708 stream_putw_at(s, 0, stream_get_endp(s));
709
21ccc0cf 710 return zserv_send_message(client, s);
bf094f69
QY		 711}
712
ee94437e
MS		 713int zsend_nhg_notify(uint16_t type, uint16_t instance, uint32_t session_id,
714 uint32_t id, enum zapi_nhg_notify_owner note)
2f35a820
DS		 715{
716 struct zserv *client;
717 struct stream *s;
718
ee94437e 719 client = zserv_find_client_session(type, instance, session_id);
2f35a820
DS		 720 if (!client) {
721 if (IS_ZEBRA_DEBUG_PACKET) {
722 zlog_debug("Not Notifying Owner: %u(%u) about %u(%d)",
723 type, instance, id, note);
724 }
725 return 0;
726 }
727
ee94437e 728 if (IS_ZEBRA_DEBUG_SEND)
04bec7b2
MS		 729 zlog_debug("%s: type %d, id %d, note %s",
730 __func__, type, id, zapi_nhg_notify_owner2str(note));
ee94437e 731
2f35a820
DS		 732 s = stream_new(ZEBRA_MAX_PACKET_SIZ);
733 stream_reset(s);
734
735 zclient_create_header(s, ZEBRA_NHG_NOTIFY_OWNER, VRF_DEFAULT);
736
2f35a820 737 stream_put(s, &note, sizeof(note));
2c7819b9 738 stream_putl(s, id);
2f35a820
DS		 739
740 stream_putw_at(s, 0, stream_get_endp(s));
741
742 return zserv_send_message(client, s);
743}
744
86391e56
MS		 745/*
746 * Common utility send route notification, called from a path using a
747 * route_entry and from a path using a dataplane context.
748 */
749static int route_notify_internal(const struct prefix *p, int type,
750 uint16_t instance, vrf_id_t vrf_id,
751 uint32_t table_id,
77b38a4a
S		 752 enum zapi_route_notify_owner note,
753 afi_t afi, safi_t safi)
bf094f69
QY		 754{
755 struct zserv *client;
756 struct stream *s;
757 uint8_t blen;
758
86391e56 759 client = zserv_find_client(type, instance);
bf094f69 760 if (!client || !client->notify_owner) {
2dbe669b 761 if (IS_ZEBRA_DEBUG_PACKET)
bf094f69 762 zlog_debug(
2dbe669b
DA		 763 "Not Notifying Owner: %s about prefix %pFX(%u) %d vrf: %u",
764 zebra_route_string(type), p, table_id, note,
765 vrf_id);
bf094f69
QY		 766 return 0;
767 }
768
2dbe669b
DA		 769 if (IS_ZEBRA_DEBUG_PACKET)
770 zlog_debug(
771 "Notifying Owner: %s about prefix %pFX(%u) %d vrf: %u",
772 zebra_route_string(type), p, table_id, note, vrf_id);
bf094f69 773
55e74ca9
MS		 774 /* We're just allocating a small-ish buffer here, since we only
775 * encode a small amount of data.
776 */
777 s = stream_new(ZEBRA_SMALL_PACKET_SIZE);
778
bf094f69
QY		 779 stream_reset(s);
780
86391e56 781 zclient_create_header(s, ZEBRA_ROUTE_NOTIFY_OWNER, vrf_id);
bf094f69
QY		 782
783 stream_put(s, &note, sizeof(note));
784
785 stream_putc(s, p->family);
786
787 blen = prefix_blen(p);
788 stream_putc(s, p->prefixlen);
789 stream_put(s, &p->u.prefix, blen);
790
86391e56 791 stream_putl(s, table_id);
bf094f69 792
77b38a4a
S		 793 /* Encode AFI, SAFI in the message */
794 stream_putc(s, afi);
795 stream_putc(s, safi);
796
bf094f69
QY		 797 stream_putw_at(s, 0, stream_get_endp(s));
798
21ccc0cf 799 return zserv_send_message(client, s);
bf094f69
QY		 800}
801
86391e56 802int zsend_route_notify_owner(struct route_entry *re, const struct prefix *p,
77b38a4a
S		 803 enum zapi_route_notify_owner note,
804 afi_t afi, safi_t safi)
86391e56
MS		 805{
806 return (route_notify_internal(p, re->type, re->instance, re->vrf_id,
77b38a4a 807 re->table, note, afi, safi));
86391e56
MS		 808}
809
7cdb1a84
MS		 810/*
811 * Route-owner notification using info from dataplane update context.
812 */
25779064 813int zsend_route_notify_owner_ctx(const struct zebra_dplane_ctx *ctx,
7cdb1a84
MS		 814 enum zapi_route_notify_owner note)
815{
816 return (route_notify_internal(dplane_ctx_get_dest(ctx),
817 dplane_ctx_get_type(ctx),
818 dplane_ctx_get_instance(ctx),
819 dplane_ctx_get_vrf(ctx),
820 dplane_ctx_get_table(ctx),
77b38a4a
S		 821 note,
822 dplane_ctx_get_afi(ctx),
823 dplane_ctx_get_safi(ctx)));
824}
825
826static void zread_route_notify_request(ZAPI_HANDLER_ARGS)
827{
828 uint8_t notify;
829
830 STREAM_GETC(msg, notify);
831 client->notify_owner = notify;
832stream_failure:
833 return;
86391e56
MS		 834}
835
f62e5480 836void zsend_rule_notify_owner(const struct zebra_dplane_ctx *ctx,
bf094f69
QY		 837 enum zapi_rule_notify_owner note)
838{
839 struct listnode *node;
840 struct zserv *client;
841 struct stream *s;
842
843 if (IS_ZEBRA_DEBUG_PACKET)
f62e5480
JU		 844 zlog_debug("%s: Notifying %u", __func__,
845 dplane_ctx_rule_get_unique(ctx));
bf094f69 846
161e9ab7 847 for (ALL_LIST_ELEMENTS_RO(zrouter.client_list, node, client)) {
f62e5480 848 if (dplane_ctx_rule_get_sock(ctx) == client->sock)
bf094f69
QY		 849 break;
850 }
851
852 if (!client)
853 return;
854
855 s = stream_new(ZEBRA_MAX_PACKET_SIZ);
856
857 zclient_create_header(s, ZEBRA_RULE_NOTIFY_OWNER, VRF_DEFAULT);
858 stream_put(s, &note, sizeof(note));
f62e5480
JU		 859 stream_putl(s, dplane_ctx_rule_get_seq(ctx));
860 stream_putl(s, dplane_ctx_rule_get_priority(ctx));
861 stream_putl(s, dplane_ctx_rule_get_unique(ctx));
58a1d249 862 stream_put(s, dplane_ctx_rule_get_ifname(ctx), INTERFACE_NAMSIZ);
bf094f69
QY		 863
864 stream_putw_at(s, 0, stream_get_endp(s));
865
21ccc0cf 866 zserv_send_message(client, s);
bf094f69
QY		 867}
868
ef524230 869void zsend_iptable_notify_owner(const struct zebra_dplane_ctx *ctx,
33c08518 870 enum zapi_iptable_notify_owner note)
bf094f69
QY		 871{
872 struct listnode *node;
873 struct zserv *client;
874 struct stream *s;
ef524230
PG		 875 struct zebra_pbr_iptable ipt;
876 uint16_t cmd = ZEBRA_IPTABLE_NOTIFY_OWNER;
877
878 if (!dplane_ctx_get_pbr_iptable(ctx, &ipt))
879 return;
bf094f69
QY		 880
881 if (IS_ZEBRA_DEBUG_PACKET)
ef524230
PG		 882 zlog_debug("%s: Notifying %s id %u note %u", __func__,
883 zserv_command_string(cmd), ipt.unique, note);
bf094f69 884
161e9ab7 885 for (ALL_LIST_ELEMENTS_RO(zrouter.client_list, node, client)) {
ef524230 886 if (ipt.sock == client->sock)
bf094f69
QY		 887 break;
888 }
889
890 if (!client)
891 return;
892
893 s = stream_new(ZEBRA_MAX_PACKET_SIZ);
894
5162e000 895 zclient_create_header(s, cmd, VRF_DEFAULT);
bf094f69 896 stream_put(s, &note, sizeof(note));
ef524230
PG		 897 stream_putl(s, ipt.unique);
898 stream_put(s, ipt.ipset_name, ZEBRA_IPSET_NAME_SIZE);
bf094f69
QY		 899 stream_putw_at(s, 0, stream_get_endp(s));
900
21ccc0cf 901 zserv_send_message(client, s);
bf094f69
QY		 902}
903
33c08518
DS		 904void zsend_ipset_notify_owner(const struct zebra_dplane_ctx *ctx,
905 enum zapi_ipset_notify_owner note)
bf094f69
QY		 906{
907 struct listnode *node;
908 struct zserv *client;
909 struct stream *s;
ef524230
PG		 910 struct zebra_pbr_ipset ipset;
911 uint16_t cmd = ZEBRA_IPSET_NOTIFY_OWNER;
912
913 if (!dplane_ctx_get_pbr_ipset(ctx, &ipset))
914 return;
bf094f69
QY		 915
916 if (IS_ZEBRA_DEBUG_PACKET)
ef524230
PG		 917 zlog_debug("%s: Notifying %s id %u note %u", __func__,
918 zserv_command_string(cmd), ipset.unique, note);
bf094f69 919
161e9ab7 920 for (ALL_LIST_ELEMENTS_RO(zrouter.client_list, node, client)) {
ef524230 921 if (ipset.sock == client->sock)
bf094f69
QY		 922 break;
923 }
924
925 if (!client)
926 return;
927
928 s = stream_new(ZEBRA_MAX_PACKET_SIZ);
929
ef524230 930 zclient_create_header(s, cmd, VRF_DEFAULT);
bf094f69 931 stream_put(s, &note, sizeof(note));
ef524230
PG		 932 stream_putl(s, ipset.unique);
933 stream_put(s, ipset.ipset_name, ZEBRA_IPSET_NAME_SIZE);
bf094f69
QY		 934 stream_putw_at(s, 0, stream_get_endp(s));
935
21ccc0cf 936 zserv_send_message(client, s);
bf094f69
QY		 937}
938
ef524230 939void zsend_ipset_entry_notify_owner(const struct zebra_dplane_ctx *ctx,
33c08518 940 enum zapi_ipset_entry_notify_owner note)
bf094f69
QY		 941{
942 struct listnode *node;
943 struct zserv *client;
944 struct stream *s;
ef524230
PG		 945 struct zebra_pbr_ipset_entry ipent;
946 struct zebra_pbr_ipset ipset;
947 uint16_t cmd = ZEBRA_IPSET_ENTRY_NOTIFY_OWNER;
5162e000 948
ef524230
PG		 949 if (!dplane_ctx_get_pbr_ipset_entry(ctx, &ipent))
950 return;
951 if (!dplane_ctx_get_pbr_ipset(ctx, &ipset))
5162e000 952 return;
bf094f69
QY		 953
954 if (IS_ZEBRA_DEBUG_PACKET)
5162e000 955 zlog_debug("%s: Notifying %s id %u note %u", __func__,
ef524230 956 zserv_command_string(cmd), ipent.unique, note);
bf094f69 957
161e9ab7 958 for (ALL_LIST_ELEMENTS_RO(zrouter.client_list, node, client)) {
ef524230 959 if (ipent.sock == client->sock)
bf094f69
QY		 960 break;
961 }
962
963 if (!client)
964 return;
965
966 s = stream_new(ZEBRA_MAX_PACKET_SIZ);
967
5162e000 968 zclient_create_header(s, cmd, VRF_DEFAULT);
bf094f69 969 stream_put(s, &note, sizeof(note));
ef524230
PG		 970 stream_putl(s, ipent.unique);
971 stream_put(s, ipset.ipset_name, ZEBRA_IPSET_NAME_SIZE);
bf094f69
QY		 972 stream_putw_at(s, 0, stream_get_endp(s));
973
21ccc0cf 974 zserv_send_message(client, s);
bf094f69
QY		 975}
976
7723e8d3
PG		 977void zsend_nhrp_neighbor_notify(int cmd, struct interface *ifp,
978 struct ipaddr *ipaddr, int ndm_state,
d603c077 979 union sockunion *link_layer_ipv4)
7723e8d3
PG		 980{
981 struct stream *s;
982 struct listnode *node, *nnode;
983 struct zserv *client;
984 afi_t afi;
d603c077 985 union sockunion ip;
7723e8d3
PG		 986
987 if (IS_ZEBRA_DEBUG_PACKET)
7d7be47e 988 zlog_debug("%s: Notifying Neighbor entry (%u)", __func__, cmd);
7723e8d3 989
d603c077
PG		 990 sockunion_family(&ip) = ipaddr_family(ipaddr);
991 afi = family2afi(sockunion_family(&ip));
992 memcpy((char *)sockunion_get_addr(&ip), &ipaddr->ip.addr,
993 family2addrsize(sockunion_family(&ip)));
994
7723e8d3
PG		 995 for (ALL_LIST_ELEMENTS(zrouter.client_list, node, nnode, client)) {
996 if (!vrf_bitmap_check(client->nhrp_neighinfo[afi], ifp->vrf_id))
997 continue;
998
999 s = stream_new(ZEBRA_MAX_PACKET_SIZ);
c4e1fd52
PG		 1000 zclient_neigh_ip_encode(s, cmd, &ip, link_layer_ipv4, ifp,
1001 ndm_state);
7723e8d3 1002 stream_putw_at(s, 0, stream_get_endp(s));
7723e8d3
PG		 1003 zserv_send_message(client, s);
1004 }
1005}
1006
1007
98a3fb0a
SM		 1008/* Router-id is updated. Send ZEBRA_ROUTER_ID_UPDATE to client. */
1009int zsend_router_id_update(struct zserv *client, afi_t afi, struct prefix *p,
bf094f69
QY		 1010 vrf_id_t vrf_id)
1011{
1012 int blen;
98a3fb0a 1013 struct stream *s;
bf094f69
QY		 1014
1015 /* Check this client need interface information. */
98a3fb0a 1016 if (!vrf_bitmap_check(client->ridinfo[afi], vrf_id))
bf094f69
QY		 1017 return 0;
1018
98a3fb0a 1019 s = stream_new(ZEBRA_MAX_PACKET_SIZ);
bf094f69
QY		 1020
1021 /* Message type. */
1022 zclient_create_header(s, ZEBRA_ROUTER_ID_UPDATE, vrf_id);
1023
1024 /* Prefix information. */
1025 stream_putc(s, p->family);
1026 blen = prefix_blen(p);
1027 stream_put(s, &p->u.prefix, blen);
1028 stream_putc(s, p->prefixlen);
1029
1030 /* Write packet size. */
1031 stream_putw_at(s, 0, stream_get_endp(s));
1032
21ccc0cf 1033 return zserv_send_message(client, s);
bf094f69
QY		 1034}
1035
1036/*
1037 * Function used by Zebra to send a PW status update to LDP daemon
1038 */
1039int zsend_pw_update(struct zserv *client, struct zebra_pw *pw)
1040{
1041 struct stream *s = stream_new(ZEBRA_MAX_PACKET_SIZ);
1042
1043 zclient_create_header(s, ZEBRA_PW_STATUS_UPDATE, pw->vrf_id);
1044 stream_write(s, pw->ifname, IF_NAMESIZE);
1045 stream_putl(s, pw->ifindex);
1046 stream_putl(s, pw->status);
1047
1048 /* Put length at the first point of the stream. */
1049 stream_putw_at(s, 0, stream_get_endp(s));
1050
21ccc0cf 1051 return zserv_send_message(client, s);
bf094f69
QY		 1052}
1053
1054/* Send response to a get label chunk request to client */
e11d7c96 1055int zsend_assign_label_chunk_response(struct zserv *client, vrf_id_t vrf_id,
e11d7c96 1056 struct label_manager_chunk *lmc)
bf094f69 1057{
bf094f69
QY		 1058 struct stream *s = stream_new(ZEBRA_MAX_PACKET_SIZ);
1059
1060 zclient_create_header(s, ZEBRA_GET_LABEL_CHUNK, vrf_id);
f004f7c3 1061 /* proto */
4cebdb9b 1062 stream_putc(s, client->proto);
f004f7c3 1063 /* instance */
4cebdb9b 1064 stream_putw(s, client->instance);
bf094f69
QY		 1065
1066 if (lmc) {
1067 /* keep */
1068 stream_putc(s, lmc->keep);
1069 /* start and end labels */
1070 stream_putl(s, lmc->start);
1071 stream_putl(s, lmc->end);
1072 }
1073
1074 /* Write packet size. */
1075 stream_putw_at(s, 0, stream_get_endp(s));
1076
732d22cb 1077 return zserv_send_message(client, s);
bf094f69
QY		 1078}
1079
1080/* Send response to a label manager connect request to client */
e11d7c96
EDP		 1081int zsend_label_manager_connect_response(struct zserv *client, vrf_id_t vrf_id,
1082 unsigned short result)
bf094f69 1083{
bf094f69
QY		 1084 struct stream *s = stream_new(ZEBRA_MAX_PACKET_SIZ);
1085
1086 zclient_create_header(s, ZEBRA_LABEL_MANAGER_CONNECT, vrf_id);
1087
5dffb0e9
FR		 1088 /* proto */
1089 stream_putc(s, client->proto);
1090
1091 /* instance */
1092 stream_putw(s, client->instance);
1093
bf094f69
QY		 1094 /* result */
1095 stream_putc(s, result);
1096
1097 /* Write packet size. */
1098 stream_putw_at(s, 0, stream_get_endp(s));
1099
732d22cb 1100 return zserv_send_message(client, s);
bf094f69
QY		 1101}
1102
1103/* Send response to a get table chunk request to client */
1104static int zsend_assign_table_chunk_response(struct zserv *client,
1105 vrf_id_t vrf_id,
1106 struct table_manager_chunk *tmc)
1107{
1108 struct stream *s = stream_new(ZEBRA_MAX_PACKET_SIZ);
1109
1110 zclient_create_header(s, ZEBRA_GET_TABLE_CHUNK, vrf_id);
1111
1112 if (tmc) {
1113 /* start and end labels */
1114 stream_putl(s, tmc->start);
1115 stream_putl(s, tmc->end);
1116 }
1117
1118 /* Write packet size. */
1119 stream_putw_at(s, 0, stream_get_endp(s));
1120
21ccc0cf 1121 return zserv_send_message(client, s);
bf094f69
QY		 1122}
1123
1124static int zsend_table_manager_connect_response(struct zserv *client,
1125 vrf_id_t vrf_id,
1126 uint16_t result)
1127{
1128 struct stream *s = stream_new(ZEBRA_MAX_PACKET_SIZ);
1129
1130 zclient_create_header(s, ZEBRA_TABLE_MANAGER_CONNECT, vrf_id);
1131
1132 /* result */
1133 stream_putc(s, result);
1134
1135 stream_putw_at(s, 0, stream_get_endp(s));
1136
21ccc0cf 1137 return zserv_send_message(client, s);
bf094f69
QY		 1138}
1139
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__);
fd99142a
MS		 1942
1943 /* Free any local allocations */
1944 nexthop_group_delete(&nhg);
1945 zebra_nhg_backup_free(&bnhg);
1946
2f35a820
DS		 1947 return;
1948 }
0885b1e3 1949
04bec7b2
MS		 1950 /* Create a temporary nhe */
1951 nhe = zebra_nhg_alloc();
1952 nhe->id = api_nhg.id;
1953 nhe->type = api_nhg.proto;
1954 nhe->zapi_instance = client->instance;
1955 nhe->zapi_session = client->session_id;
0885b1e3 1956
04bec7b2
MS		 1957 /* Take over the list(s) of nexthops */
1958 nhe->nhg.nexthop = nhg->nexthop;
1959 nhg->nexthop = NULL;
1960
1961 if (bnhg) {
1962 nhe->backup_info = bnhg;
1963 bnhg = NULL;
1964 }
0885b1e3
SW		 1965
1966 /*
1967 * TODO:
1968 * Assume fully resolved for now and install.
0885b1e3
SW		 1969 * Resolution is going to need some more work.
1970 */
ee94437e 1971
04bec7b2
MS		 1972 /* Enqueue to workqueue for processing */
1973 rib_queue_nhe_add(nhe);
1974
1975 /* Free any local allocations */
1976 nexthop_group_delete(&nhg);
1977 zebra_nhg_backup_free(&bnhg);
1978
2f35a820
DS		 1979}
1980
f70da2a3
DS		 1981static void zread_route_add(ZAPI_HANDLER_ARGS)
1982{
1983 struct stream *s;
1984 struct zapi_route api;
1985 afi_t afi;
1986 struct prefix_ipv6 *src_p = NULL;
1987 struct route_entry *re;
1988 struct nexthop_group *ng = NULL;
1989 struct nhg_backup_info *bnhg = NULL;
1990 int ret;
1991 vrf_id_t vrf_id;
1992 struct nhg_hash_entry nhe;
0eb97b86 1993
f70da2a3
DS		 1994 s = msg;
1995 if (zapi_route_decode(s, &api) < 0) {
1996 if (IS_ZEBRA_DEBUG_RECV)
1997 zlog_debug("%s: Unable to decode zapi_route sent",
1998 __func__);
1999 return;
2000 }
1d48702e 2001
f70da2a3 2002 vrf_id = zvrf_id(zvrf);
31f937fb 2003
2dbe669b
DA		 2004 if (IS_ZEBRA_DEBUG_RECV)
2005 zlog_debug("%s: p=(%u:%u)%pFX, msg flags=0x%x, flags=0x%x",
2006 __func__, vrf_id, api.tableid, &api.prefix,
f70da2a3 2007 (int)api.message, api.flags);
0eb97b86 2008
f70da2a3
DS		 2009 /* Allocate new route. */
2010 re = XCALLOC(MTYPE_RE, sizeof(struct route_entry));
2011 re->type = api.type;
2012 re->instance = api.instance;
2013 re->flags = api.flags;
2014 re->uptime = monotime(NULL);
2015 re->vrf_id = vrf_id;
1d48702e 2016
f70da2a3
DS		 2017 if (api.tableid)
2018 re->table = api.tableid;
2019 else
2020 re->table = zvrf->table_id;
1d48702e 2021
27141ea9
DS		 2022 if (!CHECK_FLAG(api.message, ZAPI_MESSAGE_NHG)
2023 && (!CHECK_FLAG(api.message, ZAPI_MESSAGE_NEXTHOP)
2024 || api.nexthop_num == 0)) {
ff9aca4f
SW		 2025 flog_warn(
2026 EC_ZEBRA_RX_ROUTE_NO_NEXTHOPS,
2027 "%s: received a route without nexthops for prefix %pFX from client %s",
2028 __func__, &api.prefix,
2029 zebra_route_string(client->proto));
1d48702e 2030
f70da2a3
DS		 2031 XFREE(MTYPE_RE, re);
2032 return;
2033 }
1d48702e 2034
f70da2a3 2035 /* Report misuse of the backup flag */
ff9aca4f
SW		 2036 if (CHECK_FLAG(api.message, ZAPI_MESSAGE_BACKUP_NEXTHOPS)
2037 && api.backup_nexthop_num == 0) {
f70da2a3 2038 if (IS_ZEBRA_DEBUG_RECV || IS_ZEBRA_DEBUG_EVENT)
ff9aca4f
SW		 2039 zlog_debug(
2040 "%s: client %s: BACKUP flag set but no backup nexthops, prefix %pFX",
2041 __func__, zebra_route_string(client->proto),
2042 &api.prefix);
f70da2a3 2043 }
62e46303 2044
50db3f2f
SW		 2045 if (CHECK_FLAG(api.message, ZAPI_MESSAGE_NHG))
2046 re->nhe_id = api.nhgid;
2047
2048 if (!re->nhe_id
2b5ecd4c
SW		 2049 && (!zapi_read_nexthops(client, &api.prefix, api.nexthops,
2050 api.flags, api.message, api.nexthop_num,
2051 api.backup_nexthop_num, &ng, NULL)
2052 || !zapi_read_nexthops(client, &api.prefix, api.backup_nexthops,
2053 api.flags, api.message,
2054 api.backup_nexthop_num,
2055 api.backup_nexthop_num, NULL, &bnhg))) {
21735352
SW		 2056
2057 nexthop_group_delete(&ng);
2058 zebra_nhg_backup_free(&bnhg);
f70da2a3
DS		 2059 XFREE(MTYPE_RE, re);
2060 return;
7fcb24bb
RW		 2061 }
2062
bf094f69
QY		 2063 if (CHECK_FLAG(api.message, ZAPI_MESSAGE_DISTANCE))
2064 re->distance = api.distance;
2065 if (CHECK_FLAG(api.message, ZAPI_MESSAGE_METRIC))
2066 re->metric = api.metric;
2067 if (CHECK_FLAG(api.message, ZAPI_MESSAGE_TAG))
2068 re->tag = api.tag;
2069 if (CHECK_FLAG(api.message, ZAPI_MESSAGE_MTU))
2070 re->mtu = api.mtu;
2071
a29a6001
DS		 2072 if (CHECK_FLAG(api.message, ZAPI_MESSAGE_OPAQUE)) {
2073 re->opaque = XMALLOC(MTYPE_OPAQUE,
2074 sizeof(struct opaque) + api.opaque.length);
2075 re->opaque->length = api.opaque.length;
2076 memcpy(re->opaque->data, api.opaque.data, re->opaque->length);
2077 }
2078
bf094f69
QY		 2079 afi = family2afi(api.prefix.family);
2080 if (afi != AFI_IP6 && CHECK_FLAG(api.message, ZAPI_MESSAGE_SRCPFX)) {
e914ccbe 2081 flog_warn(EC_ZEBRA_RX_SRCDEST_WRONG_AFI,
9df414fe 2082 "%s: Received SRC Prefix but afi is not v6",
15569c58 2083 __func__);
0eb97b86 2084 nexthop_group_delete(&ng);
1d48702e 2085 zebra_nhg_backup_free(&bnhg);
bf094f69
QY		 2086 XFREE(MTYPE_RE, re);
2087 return;
2088 }
2089 if (CHECK_FLAG(api.message, ZAPI_MESSAGE_SRCPFX))
2090 src_p = &api.src_prefix;
2091
5e7939a5
DS		 2092 if (api.safi != SAFI_UNICAST && api.safi != SAFI_MULTICAST) {
2093 flog_warn(EC_LIB_ZAPI_MISSMATCH,
2094 "%s: Received safi: %d but we can only accept UNICAST or MULTICAST",
2095 __func__, api.safi);
2096 nexthop_group_delete(&ng);
1d48702e 2097 zebra_nhg_backup_free(&bnhg);
5e7939a5
DS		 2098 XFREE(MTYPE_RE, re);
2099 return;
2100 }
1d48702e 2101
50db3f2f
SW		 2102 /*
2103 * If we have an ID, this proto owns the NHG it sent along with the
2104 * route, so we just send the ID into rib code with it.
2105 *
2106 * Havent figured out how to handle backup NHs with this yet, so lets
2107 * keep that separate.
2108 * Include backup info with the route. We use a temporary nhe here;
377e29f7
MS		 2109 * if this is a new/unknown nhe, a new copy will be allocated
2110 * and stored.
2111 */
50db3f2f
SW		 2112 if (!re->nhe_id) {
2113 zebra_nhe_init(&nhe, afi, ng->nexthop);
2114 nhe.nhg.nexthop = ng->nexthop;
2115 nhe.backup_info = bnhg;
2116 }
1d48702e
MS		 2117 ret = rib_add_multipath_nhe(afi, api.safi, &api.prefix, src_p,
2118 re, &nhe);
bf094f69 2119
f94a7703
DS		 2120 /*
2121 * rib_add_multipath_nhe only fails in a couple spots
2122 * and in those spots we have not freed memory
2123 */
38c764dd
DS		 2124 if (ret == -1) {
2125 client->error_cnt++;
f94a7703 2126 XFREE(MTYPE_RE, re);
38c764dd 2127 }
f94a7703 2128
377e29f7
MS		 2129 /* At this point, these allocations are not needed: 're' has been
2130 * retained or freed, and if 're' still exists, it is using
2131 * a reference to a shared group object.
2132 */
2133 nexthop_group_delete(&ng);
2134 if (bnhg)
2135 zebra_nhg_backup_free(&bnhg);
2136
bf094f69
QY		 2137 /* Stats */
2138 switch (api.prefix.family) {
2139 case AF_INET:
38c764dd 2140 if (ret == 0)
bf094f69 2141 client->v4_route_add_cnt++;
38c764dd 2142 else if (ret == 1)
bf094f69
QY		 2143 client->v4_route_upd8_cnt++;
2144 break;
2145 case AF_INET6:
38c764dd 2146 if (ret == 0)
bf094f69 2147 client->v6_route_add_cnt++;
38c764dd 2148 else if (ret == 1)
bf094f69
QY		 2149 client->v6_route_upd8_cnt++;
2150 break;
2151 }
2152}
2153
224ccf29
DL		 2154void zapi_opaque_free(struct opaque *opaque)
2155{
2156 XFREE(MTYPE_OPAQUE, opaque);
2157}
2158
bf094f69
QY		 2159static void zread_route_del(ZAPI_HANDLER_ARGS)
2160{
2161 struct stream *s;
2162 struct zapi_route api;
2163 afi_t afi;
2164 struct prefix_ipv6 *src_p = NULL;
2165 uint32_t table_id;
2166
2167 s = msg;
2168 if (zapi_route_decode(s, &api) < 0)
2169 return;
2170
2171 afi = family2afi(api.prefix.family);
2172 if (afi != AFI_IP6 && CHECK_FLAG(api.message, ZAPI_MESSAGE_SRCPFX)) {
e914ccbe 2173 flog_warn(EC_ZEBRA_RX_SRCDEST_WRONG_AFI,
9df414fe 2174 "%s: Received a src prefix while afi is not v6",
15569c58 2175 __func__);
bf094f69
QY		 2176 return;
2177 }
2178 if (CHECK_FLAG(api.message, ZAPI_MESSAGE_SRCPFX))
2179 src_p = &api.src_prefix;
2180
60ca3cc2 2181 if (api.tableid)
bf094f69
QY		 2182 table_id = api.tableid;
2183 else
2184 table_id = zvrf->table_id;
2185
2dbe669b
DA		 2186 if (IS_ZEBRA_DEBUG_RECV)
2187 zlog_debug("%s: p=(%u:%u)%pFX, msg flags=0x%x, flags=0x%x",
2188 __func__, zvrf_id(zvrf), table_id, &api.prefix,
c2c02b76 2189 (int)api.message, api.flags);
c2c02b76 2190
bf094f69 2191 rib_delete(afi, api.safi, zvrf_id(zvrf), api.type, api.instance,
bc541126 2192 api.flags, &api.prefix, src_p, NULL, 0, table_id, api.metric,
3ceae22b 2193 api.distance, false);
bf094f69
QY		 2194
2195 /* Stats */
2196 switch (api.prefix.family) {
2197 case AF_INET:
2198 client->v4_route_del_cnt++;
2199 break;
2200 case AF_INET6:
2201 client->v6_route_del_cnt++;
2202 break;
2203 }
2204}
2205
bf094f69
QY		 2206/* MRIB Nexthop lookup for IPv4. */
2207static void zread_ipv4_nexthop_lookup_mrib(ZAPI_HANDLER_ARGS)
2208{
2209 struct in_addr addr;
2210 struct route_entry *re;
2211
2212 STREAM_GET(&addr.s_addr, msg, IPV4_MAX_BYTELEN);
2213 re = rib_match_ipv4_multicast(zvrf_id(zvrf), addr, NULL);
2214 zsend_ipv4_nexthop_lookup_mrib(client, addr, re, zvrf);
2215
2216stream_failure:
2217 return;
2218}
2219
bf094f69
QY		 2220/* Register zebra server router-id information. Send current router-id */
2221static void zread_router_id_add(ZAPI_HANDLER_ARGS)
2222{
98a3fb0a
SM		 2223 afi_t afi;
2224
bf094f69
QY		 2225 struct prefix p;
2226
98a3fb0a
SM		 2227 STREAM_GETW(msg, afi);
2228
2229 if (afi <= AFI_UNSPEC || afi >= AFI_MAX) {
2230 zlog_warn(
2231 "Invalid AFI %u while registering for router ID notifications",
2232 afi);
2233 goto stream_failure;
2234 }
2235
bf094f69 2236 /* Router-id information is needed. */
98a3fb0a 2237 vrf_bitmap_set(client->ridinfo[afi], zvrf_id(zvrf));
bf094f69 2238
98a3fb0a 2239 router_id_get(afi, &p, zvrf);
bf094f69 2240
98a3fb0a
SM		 2241 zsend_router_id_update(client, afi, &p, zvrf_id(zvrf));
2242
2243stream_failure:
2244 return;
bf094f69
QY		 2245}
2246
2247/* Unregister zebra server router-id information. */
2248static void zread_router_id_delete(ZAPI_HANDLER_ARGS)
2249{
98a3fb0a
SM		 2250 afi_t afi;
2251
2252 STREAM_GETW(msg, afi);
2253
2254 if (afi <= AFI_UNSPEC || afi >= AFI_MAX) {
2255 zlog_warn(
2256 "Invalid AFI %u while unregistering from router ID notifications",
2257 afi);
2258 goto stream_failure;
2259 }
2260
2261 vrf_bitmap_unset(client->ridinfo[afi], zvrf_id(zvrf));
2262
2263stream_failure:
2264 return;
bf094f69
QY		 2265}
2266
2267static void zsend_capabilities(struct zserv *client, struct zebra_vrf *zvrf)
2268{
2269 struct stream *s = stream_new(ZEBRA_MAX_PACKET_SIZ);
2270
2271 zclient_create_header(s, ZEBRA_CAPABILITIES, zvrf->vrf->vrf_id);
bb6b7f79 2272 stream_putl(s, vrf_get_backend());
bf094f69 2273 stream_putc(s, mpls_enabled);
b3f2b590 2274 stream_putl(s, zrouter.multipath_num);
02c0866d 2275 stream_putc(s, zebra_mlag_get_role());
bf094f69
QY		 2276
2277 stream_putw_at(s, 0, stream_get_endp(s));
21ccc0cf 2278 zserv_send_message(client, s);
bf094f69
QY		 2279}
2280
b120fe3b
DS		 2281void zsend_capabilities_all_clients(void)
2282{
2283 struct listnode *node, *nnode;
2284 struct zebra_vrf *zvrf;
2285 struct zserv *client;
2286
2287 zvrf = vrf_info_lookup(VRF_DEFAULT);
2288 for (ALL_LIST_ELEMENTS(zrouter.client_list, node, nnode, client)) {
17da84a4
KS		 2289 /* Do not send unsolicited messages to synchronous clients. */
2290 if (client->synchronous)
2291 continue;
2292
b120fe3b
DS		 2293 zsend_capabilities(client, zvrf);
2294 }
2295}
2296
bf094f69
QY		 2297/* Tie up route-type and client->sock */
2298static void zread_hello(ZAPI_HANDLER_ARGS)
2299{
2300 /* type of protocol (lib/zebra.h) */
2301 uint8_t proto;
2302 unsigned short instance;
2303 uint8_t notify;
17da84a4 2304 uint8_t synchronous;
4e0b5b31 2305 uint32_t session_id;
bf094f69
QY		 2306
2307 STREAM_GETC(msg, proto);
2308 STREAM_GETW(msg, instance);
4e0b5b31 2309 STREAM_GETL(msg, session_id);
bf094f69 2310 STREAM_GETC(msg, notify);
17da84a4 2311 STREAM_GETC(msg, synchronous);
bf094f69
QY		 2312 if (notify)
2313 client->notify_owner = true;
2314
17da84a4
KS		 2315 if (synchronous)
2316 client->synchronous = true;
2317
bf094f69 2318 /* accept only dynamic routing protocols */
f23cbcda 2319 if ((proto < ZEBRA_ROUTE_MAX) && (proto > ZEBRA_ROUTE_CONNECT)) {
bf094f69
QY		 2320 zlog_notice(
2321 "client %d says hello and bids fair to announce only %s routes vrf=%u",
2322 client->sock, zebra_route_string(proto),
2323 zvrf->vrf->vrf_id);
2324 if (instance)
2325 zlog_notice("client protocol instance %d", instance);
2326
2327 client->proto = proto;
2328 client->instance = instance;
4e0b5b31 2329 client->session_id = session_id;
6f4aee61
S		 2330
2331 /* Graceful restart processing for client connect */
2332 zebra_gr_client_reconnect(client);
bf094f69
QY		 2333 }
2334
17da84a4
KS		 2335 if (!client->synchronous) {
2336 zsend_capabilities(client, zvrf);
2337 zebra_vrf_update_all(client);
2338 }
bf094f69
QY		 2339stream_failure:
2340 return;
2341}
2342
2343/* Unregister all information in a VRF. */
2344static void zread_vrf_unregister(ZAPI_HANDLER_ARGS)
2345{
2346 int i;
2347 afi_t afi;
2348
49db7a7b 2349 for (afi = AFI_IP; afi < AFI_MAX; afi++) {
bf094f69
QY		 2350 for (i = 0; i < ZEBRA_ROUTE_MAX; i++)
2351 vrf_bitmap_unset(client->redist[afi][i], zvrf_id(zvrf));
49db7a7b 2352 vrf_bitmap_unset(client->redist_default[afi], zvrf_id(zvrf));
98a3fb0a 2353 vrf_bitmap_unset(client->ridinfo[afi], zvrf_id(zvrf));
7723e8d3 2354 vrf_bitmap_unset(client->nhrp_neighinfo[afi], zvrf_id(zvrf));
49db7a7b 2355 }
bf094f69
QY		 2356}
2357
ff8d3c2d
MS		 2358/*
2359 * Validate incoming zapi mpls lsp / labels message
2360 */
2361static int zapi_labels_validate(const struct zapi_labels *zl)
2362{
2363 int ret = -1;
2364 int i, j, idx;
2365 uint32_t bits[8];
2366 uint32_t ival;
2367 const struct zapi_nexthop *znh;
2368
2369 /* Validate backup info: no duplicates for a single primary */
2370 if (zl->backup_nexthop_num == 0) {
2371 ret = 0;
2372 goto done;
2373 }
2374
2375 for (j = 0; j < zl->nexthop_num; j++) {
2376 znh = &zl->nexthops[j];
2377
2378 memset(bits, 0, sizeof(bits));
2379
2380 for (i = 0; i < znh->backup_num; i++) {
2381 idx = znh->backup_idx[i] / 32;
2382
2383 ival = 1 << znh->backup_idx[i] % 32;
2384
2385 /* Check whether value is already used */
2386 if (ival & bits[idx]) {
2387 /* Fail */
2388
2389 if (IS_ZEBRA_DEBUG_RECV)
2390 zlog_debug("%s: invalid zapi mpls message: duplicate backup nexthop index %d",
2391 __func__,
2392 znh->backup_idx[i]);
2393 goto done;
2394 }
2395
2396 /* Mark index value */
2397 bits[idx] |= ival;
2398 }
2399 }
2400
2401 ret = 0;
2402
2403done:
2404
2405 return ret;
2406}
2407
ea6b290b
RW		 2408/*
2409 * Handle request to create an MPLS LSP.
2410 *
2411 * A single message can fully specify an LSP with multiple nexthops.
2412 *
2413 * When the optional ZAPI_LABELS_FTN flag is set, the specified FEC (route) is
2414 * updated to use the received label(s).
2415 */
2416static void zread_mpls_labels_add(ZAPI_HANDLER_ARGS)
bf094f69
QY		 2417{
2418 struct stream *s;
bad6b0e7 2419 struct zapi_labels zl;
f2e7f4eb 2420 int ret;
bf094f69
QY		 2421
2422 /* Get input stream. */
2423 s = msg;
bad6b0e7
RW		 2424 if (zapi_labels_decode(s, &zl) < 0) {
2425 if (IS_ZEBRA_DEBUG_RECV)
2426 zlog_debug("%s: Unable to decode zapi_labels sent",
15569c58 2427 __func__);
bf094f69
QY		 2428 return;
2429 }
bf094f69 2430
bf094f69
QY		 2431 if (!mpls_enabled)
2432 return;
2433
ff8d3c2d
MS		 2434 /* Validate; will debug on failure */
2435 if (zapi_labels_validate(&zl) < 0)
2436 return;
2437
f2e7f4eb
MS		 2438 ret = mpls_zapi_labels_process(true, zvrf, &zl);
2439 if (ret < 0) {
2440 if (IS_ZEBRA_DEBUG_RECV)
2441 zlog_debug("%s: Error processing zapi request",
2442 __func__);
ea6b290b
RW		 2443 }
2444}
2445
2446/*
2447 * Handle request to delete an MPLS LSP.
2448 *
2449 * An LSP is identified by its type and local label. When the received message
2450 * doesn't contain any nexthop, the whole LSP is deleted. Otherwise, only the
2451 * listed LSP nexthops (aka NHLFEs) are deleted.
2452 *
2453 * When the optional ZAPI_LABELS_FTN flag is set, the labels of the specified
2454 * FEC (route) nexthops are deleted.
2455 */
2456static void zread_mpls_labels_delete(ZAPI_HANDLER_ARGS)
2457{
2458 struct stream *s;
2459 struct zapi_labels zl;
f2e7f4eb 2460 int ret;
ea6b290b
RW		 2461
2462 /* Get input stream. */
2463 s = msg;
2464 if (zapi_labels_decode(s, &zl) < 0) {
2465 if (IS_ZEBRA_DEBUG_RECV)
2466 zlog_debug("%s: Unable to decode zapi_labels sent",
15569c58 2467 __func__);
ea6b290b
RW		 2468 return;
2469 }
2470
2471 if (!mpls_enabled)
2472 return;
2473
2474 if (zl.nexthop_num > 0) {
f2e7f4eb
MS		 2475 ret = mpls_zapi_labels_process(false /*delete*/, zvrf, &zl);
2476 if (ret < 0) {
2477 if (IS_ZEBRA_DEBUG_RECV)
2478 zlog_debug("%s: Error processing zapi request",
2479 __func__);
ea6b290b
RW		 2480 }
2481 } else {
2482 mpls_lsp_uninstall_all_vrf(zvrf, zl.type, zl.local_label);
2483
b3c49d0e 2484 if (CHECK_FLAG(zl.message, ZAPI_LABELS_FTN))
ea6b290b
RW		 2485 mpls_ftn_uninstall(zvrf, zl.type, &zl.route.prefix,
2486 zl.route.type, zl.route.instance);
2487 }
2488}
2489
2490/*
2491 * Handle request to add an MPLS LSP or change an existing one.
2492 *
2493 * A single message can fully specify an LSP with multiple nexthops.
2494 *
2495 * When the optional ZAPI_LABELS_FTN flag is set, the specified FEC (route) is
2496 * updated to use the received label(s).
2497 *
2498 * NOTE: zebra will use route replace semantics (make-before-break) to update
2499 * the LSP in the forwarding plane if that's supported by the underlying
2500 * platform.
2501 */
2502static void zread_mpls_labels_replace(ZAPI_HANDLER_ARGS)
2503{
2504 struct stream *s;
2505 struct zapi_labels zl;
2506
2507 /* Get input stream. */
2508 s = msg;
2509 if (zapi_labels_decode(s, &zl) < 0) {
2510 if (IS_ZEBRA_DEBUG_RECV)
2511 zlog_debug("%s: Unable to decode zapi_labels sent",
15569c58 2512 __func__);
ea6b290b
RW		 2513 return;
2514 }
2515
2516 if (!mpls_enabled)
2517 return;
2518
ff8d3c2d
MS		 2519 /* Validate; will debug on failure */
2520 if (zapi_labels_validate(&zl) < 0)
2521 return;
2522
f2e7f4eb
MS		 2523 /* This removes everything, then re-adds from the client's
2524 * zapi message. Since the LSP will be processed later, on this
2525 * this same pthread, all of the changes will 'appear' at once.
2526 */
ea6b290b
RW		 2527 mpls_lsp_uninstall_all_vrf(zvrf, zl.type, zl.local_label);
2528 if (CHECK_FLAG(zl.message, ZAPI_LABELS_FTN))
2529 mpls_ftn_uninstall(zvrf, zl.type, &zl.route.prefix,
2530 zl.route.type, zl.route.instance);
2531
f2e7f4eb 2532 mpls_zapi_labels_process(true, zvrf, &zl);
bf094f69
QY		 2533}
2534
31f937fb
SM		 2535static void zread_sr_policy_set(ZAPI_HANDLER_ARGS)
2536{
2537 struct stream *s;
2538 struct zapi_sr_policy zp;
2539 struct zapi_srte_tunnel *zt;
2540 struct zebra_sr_policy *policy;
2541
2542 /* Get input stream. */
2543 s = msg;
2544 if (zapi_sr_policy_decode(s, &zp) < 0) {
2545 if (IS_ZEBRA_DEBUG_RECV)
2546 zlog_debug("%s: Unable to decode zapi_sr_policy sent",
7d7be47e 2547 __func__);
31f937fb
SM		 2548 return;
2549 }
2550 zt = &zp.segment_list;
2551 if (zt->label_num < 1) {
2552 if (IS_ZEBRA_DEBUG_RECV)
2553 zlog_debug(
2554 "%s: SR-TE tunnel must contain at least one label",
7d7be47e 2555 __func__);
31f937fb
SM		 2556 return;
2557 }
2558
2559 if (!mpls_enabled)
2560 return;
2561
2562 policy = zebra_sr_policy_find(zp.color, &zp.endpoint);
2563 if (!policy)
2564 policy = zebra_sr_policy_add(zp.color, &zp.endpoint, zp.name);
2565 /* TODO: per-VRF list of SR-TE policies. */
2566 policy->zvrf = zvrf;
2567
2568 zebra_sr_policy_validate(policy, &zp.segment_list);
2569}
2570
2571static void zread_sr_policy_delete(ZAPI_HANDLER_ARGS)
2572{
2573 struct stream *s;
2574 struct zapi_sr_policy zp;
2575 struct zebra_sr_policy *policy;
2576
2577 /* Get input stream. */
2578 s = msg;
2579 if (zapi_sr_policy_decode(s, &zp) < 0) {
2580 if (IS_ZEBRA_DEBUG_RECV)
2581 zlog_debug("%s: Unable to decode zapi_sr_policy sent",
7d7be47e 2582 __func__);
31f937fb
SM		 2583 return;
2584 }
2585
2586 if (!mpls_enabled)
2587 return;
2588
2589 policy = zebra_sr_policy_find(zp.color, &zp.endpoint);
2590 if (!policy) {
2591 if (IS_ZEBRA_DEBUG_RECV)
7d7be47e 2592 zlog_debug("%s: Unable to find SR-TE policy", __func__);
31f937fb
SM		 2593 return;
2594 }
2595
2596 zebra_sr_policy_del(policy);
2597}
2598
2599int zsend_sr_policy_notify_status(uint32_t color, struct ipaddr *endpoint,
2600 char *name, int status)
2601{
2602 struct zserv *client;
2603 struct stream *s;
2604
2605 client = zserv_find_client(ZEBRA_ROUTE_SRTE, 0);
2606 if (!client) {
2607 if (IS_ZEBRA_DEBUG_PACKET)
2608 zlog_debug(
2609 "Not notifying pathd about policy %s"
2610 " status change to %d",
2611 name, status);
2612 return 0;
2613 }
2614
2615 if (IS_ZEBRA_DEBUG_PACKET)
2616 zlog_debug(
2617 "Notifying pathd about policy %s status change"
2618 " to %d",
2619 name, status);
2620
2621 s = stream_new(ZEBRA_MAX_PACKET_SIZ);
2622 stream_reset(s);
2623
2624 zclient_create_header(s, ZEBRA_SR_POLICY_NOTIFY_STATUS, VRF_DEFAULT);
2625 stream_putl(s, color);
2626 stream_put_ipaddr(s, endpoint);
2627 stream_write(s, name, SRTE_POLICY_NAME_MAX_LENGTH);
2628 stream_putl(s, status);
2629
2630 stream_putw_at(s, 0, stream_get_endp(s));
2631
2632 return zserv_send_message(client, s);
2633}
2634
581e797e
KS		 2635/* Send client close notify to client */
2636int zsend_client_close_notify(struct zserv *client, struct zserv *closed_client)
2637{
2638 struct stream *s = stream_new(ZEBRA_MAX_PACKET_SIZ);
2639
2640 zclient_create_header(s, ZEBRA_CLIENT_CLOSE_NOTIFY, VRF_DEFAULT);
2641
2642 stream_putc(s, closed_client->proto);
2643 stream_putw(s, closed_client->instance);
2644 stream_putl(s, closed_client->session_id);
2645
2646 stream_putw_at(s, 0, stream_get_endp(s));
2647
2648 return zserv_send_message(client, s);
2649}
2650
6e68a084
HS		 2651int zsend_srv6_manager_get_locator_chunk_response(struct zserv *client,
2652 vrf_id_t vrf_id,
2653 struct srv6_locator *loc)
2654{
1bda3e62 2655 struct srv6_locator_chunk chunk = {};
6e68a084
HS		 2656 struct stream *s = stream_new(ZEBRA_MAX_PACKET_SIZ);
2657
ac6a9479
HS		 2658 strlcpy(chunk.locator_name, loc->name, sizeof(chunk.locator_name));
2659 chunk.prefix = loc->prefix;
2660 chunk.block_bits_length = loc->block_bits_length;
2661 chunk.node_bits_length = loc->node_bits_length;
2662 chunk.function_bits_length = loc->function_bits_length;
2663 chunk.argument_bits_length = loc->argument_bits_length;
2664 chunk.keep = 0;
2665 chunk.proto = client->proto;
2666 chunk.instance = client->instance;
6e68a084 2667
ac6a9479
HS		 2668 zclient_create_header(s, ZEBRA_SRV6_MANAGER_GET_LOCATOR_CHUNK, vrf_id);
2669 zapi_srv6_locator_chunk_encode(s, &chunk);
6e68a084 2670 stream_putw_at(s, 0, stream_get_endp(s));
6e68a084
HS		 2671 return zserv_send_message(client, s);
2672}
2673
bf094f69
QY		 2674/* Send response to a table manager connect request to client */
2675static void zread_table_manager_connect(struct zserv *client,
2676 struct stream *msg, vrf_id_t vrf_id)
2677{
2678 struct stream *s;
2679 uint8_t proto;
2680 uint16_t instance;
c479e756 2681 struct vrf *vrf = vrf_lookup_by_id(vrf_id);
bf094f69
QY		 2682
2683 s = msg;
2684
2685 /* Get data. */
2686 STREAM_GETC(s, proto);
2687 STREAM_GETW(s, instance);
2688
2689 /* accept only dynamic routing protocols */
2690 if ((proto >= ZEBRA_ROUTE_MAX) || (proto <= ZEBRA_ROUTE_STATIC)) {
e914ccbe 2691 flog_err(EC_ZEBRA_TM_WRONG_PROTO,
1c50c1c0
QY		 2692 "client %d has wrong protocol %s", client->sock,
2693 zebra_route_string(proto));
bf094f69
QY		 2694 zsend_table_manager_connect_response(client, vrf_id, 1);
2695 return;
2696 }
c479e756
DS		 2697 zlog_notice("client %d with vrf %s(%u) instance %u connected as %s",
2698 client->sock, VRF_LOGNAME(vrf), vrf_id, instance,
2699 zebra_route_string(proto));
bf094f69
QY		 2700 client->proto = proto;
2701 client->instance = instance;
2702
2703 /*
2704 * Release previous labels of same protocol and instance.
2705 * This is done in case it restarted from an unexpected shutdown.
2706 */
453844ab 2707 release_daemon_table_chunks(client);
bf094f69
QY		 2708
2709 zsend_table_manager_connect_response(client, vrf_id, 0);
2710
2711stream_failure:
2712 return;
2713}
2714
2715static void zread_label_manager_connect(struct zserv *client,
2716 struct stream *msg, vrf_id_t vrf_id)
2717{
2718 struct stream *s;
2719 /* type of protocol (lib/zebra.h) */
2720 uint8_t proto;
2721 unsigned short instance;
2722
2723 /* Get input stream. */
2724 s = msg;
2725
2726 /* Get data. */
2727 STREAM_GETC(s, proto);
2728 STREAM_GETW(s, instance);
2729
2730 /* accept only dynamic routing protocols */
2731 if ((proto >= ZEBRA_ROUTE_MAX) || (proto <= ZEBRA_ROUTE_STATIC)) {
e914ccbe 2732 flog_err(EC_ZEBRA_TM_WRONG_PROTO,
1c50c1c0
QY		 2733 "client %d has wrong protocol %s", client->sock,
2734 zebra_route_string(proto));
e11d7c96 2735 zsend_label_manager_connect_response(client, vrf_id, 1);
bf094f69
QY		 2736 return;
2737 }
e11d7c96
EDP		 2738
2739 /* recall proto and instance in this socket */
bf094f69
QY		 2740 client->proto = proto;
2741 client->instance = instance;
2742
e11d7c96 2743 /* call hook for connection using wrapper */
4cebdb9b 2744 lm_client_connect_call(client, vrf_id);
bf094f69
QY		 2745
2746stream_failure:
2747 return;
2748}
2749
2750static void zread_get_label_chunk(struct zserv *client, struct stream *msg,
2751 vrf_id_t vrf_id)
2752{
2753 struct stream *s;
2754 uint8_t keep;
0e3b6a92 2755 uint32_t size, base;
e11d7c96 2756 struct label_manager_chunk *lmc = NULL;
5dffb0e9
FR		 2757 uint8_t proto;
2758 unsigned short instance;
bf094f69
QY		 2759
2760 /* Get input stream. */
2761 s = msg;
2762
2763 /* Get data. */
5dffb0e9
FR		 2764 STREAM_GETC(s, proto);
2765 STREAM_GETW(s, instance);
bf094f69
QY		 2766 STREAM_GETC(s, keep);
2767 STREAM_GETL(s, size);
0e3b6a92 2768 STREAM_GETL(s, base);
bf094f69 2769
4cebdb9b
MS		 2770 assert(proto == client->proto && instance == client->instance);
2771
e11d7c96 2772 /* call hook to get a chunk using wrapper */
4cebdb9b 2773 lm_get_chunk_call(&lmc, client, keep, size, base, vrf_id);
bf094f69 2774
bf094f69
QY		 2775stream_failure:
2776 return;
2777}
2778
2779static void zread_release_label_chunk(struct zserv *client, struct stream *msg)
2780{
2781 struct stream *s;
2782 uint32_t start, end;
5dffb0e9
FR		 2783 uint8_t proto;
2784 unsigned short instance;
bf094f69
QY		 2785
2786 /* Get input stream. */
2787 s = msg;
2788
2789 /* Get data. */
5dffb0e9
FR		 2790 STREAM_GETC(s, proto);
2791 STREAM_GETW(s, instance);
bf094f69
QY		 2792 STREAM_GETL(s, start);
2793 STREAM_GETL(s, end);
2794
4cebdb9b
MS		 2795 assert(proto == client->proto && instance == client->instance);
2796
e11d7c96 2797 /* call hook to release a chunk using wrapper */
4cebdb9b 2798 lm_release_chunk_call(client, start, end);
bf094f69
QY		 2799
2800stream_failure:
2801 return;
2802}
e11d7c96 2803
bf094f69
QY		 2804static void zread_label_manager_request(ZAPI_HANDLER_ARGS)
2805{
e11d7c96
EDP		 2806 if (hdr->command == ZEBRA_LABEL_MANAGER_CONNECT
2807 || hdr->command == ZEBRA_LABEL_MANAGER_CONNECT_ASYNC)
2808 zread_label_manager_connect(client, msg, zvrf_id(zvrf));
bf094f69 2809 else {
e11d7c96
EDP		 2810 if (hdr->command == ZEBRA_GET_LABEL_CHUNK)
2811 zread_get_label_chunk(client, msg, zvrf_id(zvrf));
2812 else if (hdr->command == ZEBRA_RELEASE_LABEL_CHUNK)
2813 zread_release_label_chunk(client, msg);
bf094f69
QY		 2814 }
2815}
2816
2817static void zread_get_table_chunk(struct zserv *client, struct stream *msg,
2818 vrf_id_t vrf_id)
2819{
2820 struct stream *s;
2821 uint32_t size;
2822 struct table_manager_chunk *tmc;
2823
2824 /* Get input stream. */
2825 s = msg;
2826
2827 /* Get data. */
2828 STREAM_GETL(s, size);
2829
2830 tmc = assign_table_chunk(client->proto, client->instance, size);
2831 if (!tmc)
e914ccbe 2832 flog_err(EC_ZEBRA_TM_CANNOT_ASSIGN_CHUNK,
1c50c1c0
QY		 2833 "%s: Unable to assign Table Chunk of size %u",
2834 __func__, size);
bf094f69
QY		 2835 else
2836 zlog_debug("Assigned Table Chunk %u - %u", tmc->start,
2837 tmc->end);
2838 /* send response back */
2839 zsend_assign_table_chunk_response(client, vrf_id, tmc);
2840
2841stream_failure:
2842 return;
2843}
2844
2845static void zread_release_table_chunk(struct zserv *client, struct stream *msg)
2846{
2847 struct stream *s;
2848 uint32_t start, end;
2849
2850 /* Get input stream. */
2851 s = msg;
2852
2853 /* Get data. */
2854 STREAM_GETL(s, start);
2855 STREAM_GETL(s, end);
2856
2857 release_table_chunk(client->proto, client->instance, start, end);
2858
2859stream_failure:
2860 return;
2861}
2862
2863static void zread_table_manager_request(ZAPI_HANDLER_ARGS)
2864{
16bd37d6 2865 /* to avoid sending other messages like ZEBRA_INTERFACE_UP */
bf094f69
QY		 2866 if (hdr->command == ZEBRA_TABLE_MANAGER_CONNECT)
2867 zread_table_manager_connect(client, msg, zvrf_id(zvrf));
2868 else {
2869 /* Sanity: don't allow 'unidentified' requests */
2870 if (!client->proto) {
af4c2728 2871 flog_err(
e914ccbe 2872 EC_ZEBRA_TM_ALIENS,
16bd37d6 2873 "Got SRv6 request from an unidentified client");
bf094f69
QY		 2874 return;
2875 }
2876 if (hdr->command == ZEBRA_GET_TABLE_CHUNK)
2877 zread_get_table_chunk(client, msg, zvrf_id(zvrf));
2878 else if (hdr->command == ZEBRA_RELEASE_TABLE_CHUNK)
2879 zread_release_table_chunk(client, msg);
2880 }
2881}
2882
6e68a084
HS		 2883static void zread_srv6_manager_get_locator_chunk(struct zserv *client,
2884 struct stream *msg,
2885 vrf_id_t vrf_id)
2886{
2887 struct stream *s = msg;
6e68a084
HS		 2888 uint16_t len;
2889 char locator_name[SRV6_LOCNAME_SIZE] = {0};
2890
2891 /* Get data. */
6e68a084
HS		 2892 STREAM_GETW(s, len);
2893 STREAM_GET(locator_name, s, len);
2894
6e68a084
HS		 2895 /* call hook to get a chunk using wrapper */
2896 struct srv6_locator *loc = NULL;
2897 srv6_manager_get_locator_chunk_call(&loc, client, locator_name, vrf_id);
2898
2899stream_failure:
2900 return;
2901}
2902
2903static void zread_srv6_manager_release_locator_chunk(struct zserv *client,
2904 struct stream *msg,
2905 vrf_id_t vrf_id)
2906{
2907 struct stream *s = msg;
6e68a084
HS		 2908 uint16_t len;
2909 char locator_name[SRV6_LOCNAME_SIZE] = {0};
2910
2911 /* Get data. */
6e68a084
HS		 2912 STREAM_GETW(s, len);
2913 STREAM_GET(locator_name, s, len);
2914
6e68a084
HS		 2915 /* call hook to release a chunk using wrapper */
2916 srv6_manager_release_locator_chunk_call(client, locator_name, vrf_id);
2917
2918stream_failure:
2919 return;
2920}
2921
2922static void zread_srv6_manager_request(ZAPI_HANDLER_ARGS)
2923{
2924 switch (hdr->command) {
6e68a084
HS		 2925 case ZEBRA_SRV6_MANAGER_GET_LOCATOR_CHUNK:
2926 zread_srv6_manager_get_locator_chunk(client, msg,
2927 zvrf_id(zvrf));
2928 break;
2929 case ZEBRA_SRV6_MANAGER_RELEASE_LOCATOR_CHUNK:
2930 zread_srv6_manager_release_locator_chunk(client, msg,
2931 zvrf_id(zvrf));
2932 break;
2933 default:
9f900cda 2934 zlog_err("%s: unknown SRv6 Manager command", __func__);
6e68a084
HS		 2935 break;
2936 }
2937}
2938
bf094f69
QY		 2939static void zread_pseudowire(ZAPI_HANDLER_ARGS)
2940{
2941 struct stream *s;
2942 char ifname[IF_NAMESIZE];
2943 ifindex_t ifindex;
2944 int type;
2945 int af;
2946 union g_addr nexthop;
2947 uint32_t local_label;
2948 uint32_t remote_label;
2949 uint8_t flags;
2950 union pw_protocol_fields data;
2951 uint8_t protocol;
2952 struct zebra_pw *pw;
2953
2954 /* Get input stream. */
2955 s = msg;
2956
2957 /* Get data. */
2958 STREAM_GET(ifname, s, IF_NAMESIZE);
f223b3d1 2959 ifname[IF_NAMESIZE - 1] = '\0';
bf094f69
QY		 2960 STREAM_GETL(s, ifindex);
2961 STREAM_GETL(s, type);
2962 STREAM_GETL(s, af);
2963 switch (af) {
2964 case AF_INET:
2965 STREAM_GET(&nexthop.ipv4.s_addr, s, IPV4_MAX_BYTELEN);
2966 break;
2967 case AF_INET6:
2968 STREAM_GET(&nexthop.ipv6, s, 16);
2969 break;
2970 default:
2971 return;
2972 }
2973 STREAM_GETL(s, local_label);
2974 STREAM_GETL(s, remote_label);
2975 STREAM_GETC(s, flags);
2976 STREAM_GET(&data, s, sizeof(data));
2977 protocol = client->proto;
2978
2979 pw = zebra_pw_find(zvrf, ifname);
2980 switch (hdr->command) {
2981 case ZEBRA_PW_ADD:
2982 if (pw) {
e914ccbe 2983 flog_warn(EC_ZEBRA_PSEUDOWIRE_EXISTS,
9df414fe 2984 "%s: pseudowire %s already exists [%s]",
bf094f69
QY		 2985 __func__, ifname,
2986 zserv_command_string(hdr->command));
2987 return;
2988 }
2989
2990 zebra_pw_add(zvrf, ifname, protocol, client);
2991 break;
2992 case ZEBRA_PW_DELETE:
2993 if (!pw) {
e914ccbe 2994 flog_warn(EC_ZEBRA_PSEUDOWIRE_NONEXISTENT,
9df414fe 2995 "%s: pseudowire %s not found [%s]", __func__,
bf094f69
QY		 2996 ifname, zserv_command_string(hdr->command));
2997 return;
2998 }
2999
3000 zebra_pw_del(zvrf, pw);
3001 break;
3002 case ZEBRA_PW_SET:
3003 case ZEBRA_PW_UNSET:
3004 if (!pw) {
e914ccbe 3005 flog_warn(EC_ZEBRA_PSEUDOWIRE_NONEXISTENT,
9df414fe 3006 "%s: pseudowire %s not found [%s]", __func__,
bf094f69
QY		 3007 ifname, zserv_command_string(hdr->command));
3008 return;
3009 }
3010
3011 switch (hdr->command) {
3012 case ZEBRA_PW_SET:
3013 pw->enabled = 1;
3014 break;
3015 case ZEBRA_PW_UNSET:
3016 pw->enabled = 0;
3017 break;
3018 }
3019
3020 zebra_pw_change(pw, ifindex, type, af, &nexthop, local_label,
3021 remote_label, flags, &data);
3022 break;
3023 }
3024
3025stream_failure:
3026 return;
3027}
3028
3029static void zread_interface_set_master(ZAPI_HANDLER_ARGS)
3030{
3031 struct interface *master;
3032 struct interface *slave;
3033 struct stream *s = msg;
3034 int ifindex;
3035 vrf_id_t vrf_id;
3036
3037 STREAM_GETL(s, vrf_id);
3038 STREAM_GETL(s, ifindex);
3039 master = if_lookup_by_index(ifindex, vrf_id);
3040
3041 STREAM_GETL(s, vrf_id);
3042 STREAM_GETL(s, ifindex);
3043 slave = if_lookup_by_index(ifindex, vrf_id);
3044
3045 if (!master || !slave)
3046 return;
3047
3048 kernel_interface_set_master(master, slave);
3049
3050stream_failure:
3051 return;
3052}
3053
3054
3055static void zread_vrf_label(ZAPI_HANDLER_ARGS)
3056{
3057 struct interface *ifp;
3058 mpls_label_t nlabel;
3059 afi_t afi;
3060 struct stream *s;
3061 struct zebra_vrf *def_zvrf;
3062 enum lsp_types_t ltype;
3063
3064 s = msg;
3065 STREAM_GETL(s, nlabel);
3066 STREAM_GETC(s, afi);
663d3a91
QY		 3067
3068 if (!(IS_VALID_AFI(afi))) {
3069 zlog_warn("Invalid AFI for VRF label: %u", afi);
3070 return;
3071 }
3072
bf094f69
QY		 3073 if (nlabel == zvrf->label[afi]) {
3074 /*
3075 * Nothing to do here move along
3076 */
3077 return;
3078 }
3079
3080 STREAM_GETC(s, ltype);
3081
3082 if (zvrf->vrf->vrf_id != VRF_DEFAULT)
a36898e7 3083 ifp = if_lookup_by_name(zvrf->vrf->name, zvrf->vrf->vrf_id);
bf094f69 3084 else
a36898e7 3085 ifp = if_lookup_by_name("lo", VRF_DEFAULT);
bf094f69
QY		 3086
3087 if (!ifp) {
3088 zlog_debug("Unable to find specified Interface for %s",
3089 zvrf->vrf->name);
3090 return;
3091 }
3092
3093 def_zvrf = zebra_vrf_lookup_by_id(VRF_DEFAULT);
3094
3095 if (zvrf->label[afi] != MPLS_LABEL_NONE) {
3096 afi_t scrubber;
3097 bool really_remove;
3098
3099 really_remove = true;
3100 for (scrubber = AFI_IP; scrubber < AFI_MAX; scrubber++) {
3101 if (scrubber == afi)
3102 continue;
3103
3104 if (zvrf->label[scrubber] == MPLS_LABEL_NONE)
3105 continue;
3106
3107 if (zvrf->label[afi] == zvrf->label[scrubber]) {
3108 really_remove = false;
3109 break;
3110 }
3111 }
3112
3113 if (really_remove)
3114 mpls_lsp_uninstall(def_zvrf, ltype, zvrf->label[afi],
3115 NEXTHOP_TYPE_IFINDEX, NULL,
cc1b9746 3116 ifp->ifindex, false /*backup*/);
bf094f69
QY		 3117 }
3118
5065db0a
RW		 3119 if (nlabel != MPLS_LABEL_NONE) {
3120 mpls_label_t out_label = MPLS_LABEL_IMPLICIT_NULL;
3121 mpls_lsp_install(def_zvrf, ltype, nlabel, 1, &out_label,
3122 NEXTHOP_TYPE_IFINDEX, NULL, ifp->ifindex);
3123 }
bf094f69
QY		 3124
3125 zvrf->label[afi] = nlabel;
06302ecb
DS		 3126 zvrf->label_proto[afi] = client->proto;
3127
bf094f69
QY		 3128stream_failure:
3129 return;
3130}
3131
3132static inline void zread_rule(ZAPI_HANDLER_ARGS)
3133{
3134 struct zebra_pbr_rule zpr;
3135 struct stream *s;
3136 uint32_t total, i;
58a1d249 3137 char ifname[INTERFACE_NAMSIZ + 1] = {};
bf094f69
QY		 3138
3139 s = msg;
3140 STREAM_GETL(s, total);
3141
3142 for (i = 0; i < total; i++) {
3143 memset(&zpr, 0, sizeof(zpr));
3144
3145 zpr.sock = client->sock;
3146 zpr.rule.vrf_id = hdr->vrf_id;
3147 STREAM_GETL(s, zpr.rule.seq);
3148 STREAM_GETL(s, zpr.rule.priority);
3149 STREAM_GETL(s, zpr.rule.unique);
f56697ef 3150 STREAM_GETC(s, zpr.rule.filter.ip_proto);
bf094f69
QY		 3151 STREAM_GETC(s, zpr.rule.filter.src_ip.family);
3152 STREAM_GETC(s, zpr.rule.filter.src_ip.prefixlen);
3153 STREAM_GET(&zpr.rule.filter.src_ip.u.prefix, s,
3154 prefix_blen(&zpr.rule.filter.src_ip));
3155 STREAM_GETW(s, zpr.rule.filter.src_port);
3156 STREAM_GETC(s, zpr.rule.filter.dst_ip.family);
3157 STREAM_GETC(s, zpr.rule.filter.dst_ip.prefixlen);
3158 STREAM_GET(&zpr.rule.filter.dst_ip.u.prefix, s,
3159 prefix_blen(&zpr.rule.filter.dst_ip));
3160 STREAM_GETW(s, zpr.rule.filter.dst_port);
01f23aff 3161 STREAM_GETC(s, zpr.rule.filter.dsfield);
bf094f69
QY		 3162 STREAM_GETL(s, zpr.rule.filter.fwmark);
3163 STREAM_GETL(s, zpr.rule.action.table);
58a1d249 3164 STREAM_GET(ifname, s, INTERFACE_NAMSIZ);
bf094f69 3165
58a1d249
DS		 3166 strlcpy(zpr.ifname, ifname, sizeof(zpr.ifname));
3167 strlcpy(zpr.rule.ifname, ifname, sizeof(zpr.rule.ifname));
bf094f69
QY		 3168
3169 if (!is_default_prefix(&zpr.rule.filter.src_ip))
3170 zpr.rule.filter.filter_bm |= PBR_FILTER_SRC_IP;
3171
3172 if (!is_default_prefix(&zpr.rule.filter.dst_ip))
3173 zpr.rule.filter.filter_bm |= PBR_FILTER_DST_IP;
3174
3175 if (zpr.rule.filter.src_port)
3176 zpr.rule.filter.filter_bm |= PBR_FILTER_SRC_PORT;
3177
3178 if (zpr.rule.filter.dst_port)
3179 zpr.rule.filter.filter_bm |= PBR_FILTER_DST_PORT;
3180
01f23aff
WC		 3181 if (zpr.rule.filter.dsfield)
3182 zpr.rule.filter.filter_bm |= PBR_FILTER_DSFIELD;
3183
f56697ef
DS		 3184 if (zpr.rule.filter.ip_proto)
3185 zpr.rule.filter.filter_bm |= PBR_FILTER_IP_PROTOCOL;
3186
bf094f69
QY		 3187 if (zpr.rule.filter.fwmark)
3188 zpr.rule.filter.filter_bm |= PBR_FILTER_FWMARK;
3189
4719fd76
QY		 3190 if (!(zpr.rule.filter.src_ip.family == AF_INET
3191 || zpr.rule.filter.src_ip.family == AF_INET6)) {
cc815be7 3192 zlog_warn(
6cde4b45 3193 "Unsupported PBR source IP family: %s (%hhu)",
cc815be7
QY		 3194 family2str(zpr.rule.filter.src_ip.family),
3195 zpr.rule.filter.src_ip.family);
4719fd76
QY		 3196 return;
3197 }
3198 if (!(zpr.rule.filter.dst_ip.family == AF_INET
3199 || zpr.rule.filter.dst_ip.family == AF_INET6)) {
cec72d49 3200 zlog_warn(
6cde4b45 3201 "Unsupported PBR destination IP family: %s (%hhu)",
cec72d49
DA		 3202 family2str(zpr.rule.filter.dst_ip.family),
3203 zpr.rule.filter.dst_ip.family);
4719fd76
QY		 3204 return;
3205 }
3206
3207
7f0ea8a4 3208 zpr.vrf_id = zvrf->vrf->vrf_id;
bf094f69 3209 if (hdr->command == ZEBRA_RULE_ADD)
7f0ea8a4 3210 zebra_pbr_add_rule(&zpr);
bf094f69 3211 else
7f0ea8a4 3212 zebra_pbr_del_rule(&zpr);
bf094f69
QY		 3213 }
3214
3215stream_failure:
3216 return;
3217}
3218
3219static inline void zread_ipset(ZAPI_HANDLER_ARGS)
3220{
3221 struct zebra_pbr_ipset zpi;
3222 struct stream *s;
3223 uint32_t total, i;
3224
3225 s = msg;
3226 STREAM_GETL(s, total);
3227
3228 for (i = 0; i < total; i++) {
3229 memset(&zpi, 0, sizeof(zpi));
3230
3231 zpi.sock = client->sock;
be2028d1 3232 zpi.vrf_id = zvrf->vrf->vrf_id;
bf094f69
QY		 3233 STREAM_GETL(s, zpi.unique);
3234 STREAM_GETL(s, zpi.type);
a60b7031 3235 STREAM_GETC(s, zpi.family);
bf094f69
QY		 3236 STREAM_GET(&zpi.ipset_name, s, ZEBRA_IPSET_NAME_SIZE);
3237
3238 if (hdr->command == ZEBRA_IPSET_CREATE)
62f20a52 3239 zebra_pbr_create_ipset(&zpi);
bf094f69 3240 else
62f20a52 3241 zebra_pbr_destroy_ipset(&zpi);
bf094f69
QY		 3242 }
3243
3244stream_failure:
3245 return;
3246}
3247
3248static inline void zread_ipset_entry(ZAPI_HANDLER_ARGS)
3249{
3250 struct zebra_pbr_ipset_entry zpi;
3251 struct zebra_pbr_ipset ipset;
3252 struct stream *s;
3253 uint32_t total, i;
3254
3255 s = msg;
3256 STREAM_GETL(s, total);
3257
3258 for (i = 0; i < total; i++) {
3259 memset(&zpi, 0, sizeof(zpi));
3260 memset(&ipset, 0, sizeof(ipset));
3261
3262 zpi.sock = client->sock;
3263 STREAM_GETL(s, zpi.unique);
3264 STREAM_GET(&ipset.ipset_name, s, ZEBRA_IPSET_NAME_SIZE);
261462c3 3265 ipset.ipset_name[ZEBRA_IPSET_NAME_SIZE - 1] = '\0';
bf094f69
QY		 3266 STREAM_GETC(s, zpi.src.family);
3267 STREAM_GETC(s, zpi.src.prefixlen);
3268 STREAM_GET(&zpi.src.u.prefix, s, prefix_blen(&zpi.src));
3269 STREAM_GETC(s, zpi.dst.family);
3270 STREAM_GETC(s, zpi.dst.prefixlen);
3271 STREAM_GET(&zpi.dst.u.prefix, s, prefix_blen(&zpi.dst));
3272
25d760c5
PG		 3273 STREAM_GETW(s, zpi.src_port_min);
3274 STREAM_GETW(s, zpi.src_port_max);
3275 STREAM_GETW(s, zpi.dst_port_min);
3276 STREAM_GETW(s, zpi.dst_port_max);
3277 STREAM_GETC(s, zpi.proto);
bf094f69
QY		 3278 if (!is_default_prefix(&zpi.src))
3279 zpi.filter_bm |= PBR_FILTER_SRC_IP;
3280
3281 if (!is_default_prefix(&zpi.dst))
3282 zpi.filter_bm |= PBR_FILTER_DST_IP;
be729dd7 3283 if (zpi.dst_port_min != 0 || zpi.proto == IPPROTO_ICMP)
25d760c5 3284 zpi.filter_bm |= PBR_FILTER_DST_PORT;
be729dd7 3285 if (zpi.src_port_min != 0 || zpi.proto == IPPROTO_ICMP)
25d760c5
PG		 3286 zpi.filter_bm |= PBR_FILTER_SRC_PORT;
3287 if (zpi.dst_port_max != 0)
3288 zpi.filter_bm |= PBR_FILTER_DST_PORT_RANGE;
3289 if (zpi.src_port_max != 0)
3290 zpi.filter_bm |= PBR_FILTER_SRC_PORT_RANGE;
3291 if (zpi.proto != 0)
3292 zpi.filter_bm |= PBR_FILTER_PROTO;
bf094f69 3293
9863725c
QY		 3294 if (!(zpi.dst.family == AF_INET
3295 || zpi.dst.family == AF_INET6)) {
cec72d49 3296 zlog_warn(
6cde4b45 3297 "Unsupported PBR destination IP family: %s (%hhu)",
cec72d49 3298 family2str(zpi.dst.family), zpi.dst.family);
9863725c
QY		 3299 goto stream_failure;
3300 }
3301 if (!(zpi.src.family == AF_INET
3302 || zpi.src.family == AF_INET6)) {
cec72d49 3303 zlog_warn(
6cde4b45 3304 "Unsupported PBR source IP family: %s (%hhu)",
cec72d49 3305 family2str(zpi.src.family), zpi.src.family);
9863725c
QY		 3306 goto stream_failure;
3307 }
3308
bf094f69 3309 /* calculate backpointer */
62f20a52
DS		 3310 zpi.backpointer =
3311 zebra_pbr_lookup_ipset_pername(ipset.ipset_name);
f096bae4
DS		 3312
3313 if (!zpi.backpointer) {
3314 zlog_warn("ipset name specified: %s does not exist",
3315 ipset.ipset_name);
3316 goto stream_failure;
3317 }
3318
bf094f69 3319 if (hdr->command == ZEBRA_IPSET_ENTRY_ADD)
62f20a52 3320 zebra_pbr_add_ipset_entry(&zpi);
bf094f69 3321 else
62f20a52 3322 zebra_pbr_del_ipset_entry(&zpi);
bf094f69
QY		 3323 }
3324
3325stream_failure:
3326 return;
3327}
3328
05657ec2 3329
7723e8d3
PG		 3330static inline void zebra_neigh_register(ZAPI_HANDLER_ARGS)
3331{
3332 afi_t afi;
3333
3334 STREAM_GETW(msg, afi);
3335 if (afi <= AFI_UNSPEC || afi >= AFI_MAX) {
3336 zlog_warn(
3337 "Invalid AFI %u while registering for neighbors notifications",
3338 afi);
3339 goto stream_failure;
3340 }
3341 vrf_bitmap_set(client->nhrp_neighinfo[afi], zvrf_id(zvrf));
3342stream_failure:
3343 return;
3344}
3345
3346static inline void zebra_neigh_unregister(ZAPI_HANDLER_ARGS)
3347{
3348 afi_t afi;
3349
3350 STREAM_GETW(msg, afi);
3351 if (afi <= AFI_UNSPEC || afi >= AFI_MAX) {
3352 zlog_warn(
3353 "Invalid AFI %u while unregistering from neighbor notifications",
3354 afi);
3355 goto stream_failure;
3356 }
3357 vrf_bitmap_unset(client->nhrp_neighinfo[afi], zvrf_id(zvrf));
3358stream_failure:
3359 return;
3360}
3361
d17af8dd
PG		 3362static inline void zebra_gre_get(ZAPI_HANDLER_ARGS)
3363{
3364 struct stream *s;
3365 ifindex_t idx;
3366 struct interface *ifp;
3367 struct zebra_if *zebra_if = NULL;
3368 struct zebra_l2info_gre *gre_info;
3369 struct interface *ifp_link = NULL;
3370 vrf_id_t vrf_id_link = VRF_UNKNOWN;
3371 vrf_id_t vrf_id = zvrf->vrf->vrf_id;
3372
3373 s = msg;
3374 STREAM_GETL(s, idx);
3375 ifp = if_lookup_by_index(idx, vrf_id);
3376
3377 if (ifp)
3378 zebra_if = ifp->info;
3379
3380 s = stream_new(ZEBRA_MAX_PACKET_SIZ);
3381
3382 zclient_create_header(s, ZEBRA_GRE_UPDATE, vrf_id);
3383
3384 if (ifp && IS_ZEBRA_IF_GRE(ifp) && zebra_if) {
3385 gre_info = &zebra_if->l2info.gre;
3386
3387 stream_putl(s, idx);
3388 stream_putl(s, gre_info->ikey);
3389 stream_putl(s, gre_info->ikey);
3390 stream_putl(s, gre_info->ifindex_link);
3391
3392 ifp_link = if_lookup_by_index_per_ns(
3393 zebra_ns_lookup(gre_info->link_nsid),
3394 gre_info->ifindex_link);
3395 if (ifp_link)
3396 vrf_id_link = ifp_link->vrf_id;
3397 stream_putl(s, vrf_id_link);
3398 stream_putl(s, gre_info->vtep_ip.s_addr);
3399 stream_putl(s, gre_info->vtep_ip_remote.s_addr);
3400 } else {
3401 stream_putl(s, idx);
3402 stream_putl(s, 0);
3403 stream_putl(s, 0);
3404 stream_putl(s, IFINDEX_INTERNAL);
3405 stream_putl(s, VRF_UNKNOWN);
3406 stream_putl(s, 0);
3407 }
3408 /* Write packet size. */
3409 stream_putw_at(s, 0, stream_get_endp(s));
3410 zserv_send_message(client, s);
3411
3412 return;
3413 stream_failure:
3414 return;
3415}
3416
541025d6
PG		 3417static inline void zebra_configure_arp(ZAPI_HANDLER_ARGS)
3418{
3419 struct stream *s;
e18747a9 3420 uint8_t fam;
541025d6
PG		 3421 ifindex_t idx;
3422 struct interface *ifp;
541025d6
PG		 3423
3424 s = msg;
3425 STREAM_GETC(s, fam);
3426 if (fam != AF_INET && fam != AF_INET6)
3427 return;
3428 STREAM_GETL(s, idx);
3429 ifp = if_lookup_by_index_per_ns(zvrf->zns, idx);
3430 if (!ifp)
3431 return;
e18747a9 3432 dplane_neigh_table_update(ifp, fam, 1, 0, 0);
541025d6
PG		 3433stream_failure:
3434 return;
3435}
3436
d603c077 3437static inline void zebra_neigh_ip_add(ZAPI_HANDLER_ARGS)
05657ec2
PG		 3438{
3439 struct stream *s;
d603c077 3440 struct zapi_neigh_ip api = {};
05657ec2 3441 int ret;
0a27a2fe 3442 const struct interface *ifp;
05657ec2
PG		 3443
3444 s = msg;
d603c077 3445 ret = zclient_neigh_ip_decode(s, &api);
05657ec2
PG		 3446 if (ret < 0)
3447 return;
0a27a2fe
PG		 3448 ifp = if_lookup_by_index(api.index, zvrf_id(zvrf));
3449 if (!ifp)
3450 return;
3451 dplane_neigh_ip_update(DPLANE_OP_NEIGH_IP_INSTALL, ifp, &api.ip_out,
d603c077 3452 &api.ip_in, api.ndm_state, client->proto);
05657ec2
PG		 3453}
3454
0a27a2fe 3455
d603c077 3456static inline void zebra_neigh_ip_del(ZAPI_HANDLER_ARGS)
05657ec2
PG		 3457{
3458 struct stream *s;
d603c077 3459 struct zapi_neigh_ip api = {};
05657ec2 3460 int ret;
0a27a2fe 3461 struct interface *ifp;
05657ec2 3462
05657ec2 3463 s = msg;
d603c077 3464 ret = zclient_neigh_ip_decode(s, &api);
05657ec2
PG		 3465 if (ret < 0)
3466 return;
0a27a2fe
PG		 3467 ifp = if_lookup_by_index(api.index, zvrf_id(zvrf));
3468 if (!ifp)
3469 return;
3470 dplane_neigh_ip_update(DPLANE_OP_NEIGH_IP_DELETE, ifp, &api.ip_out,
d603c077 3471 &api.ip_in, api.ndm_state, client->proto);
05657ec2
PG		 3472}
3473
3474
bf094f69
QY		 3475static inline void zread_iptable(ZAPI_HANDLER_ARGS)
3476{
8b5c4dce
QY		 3477 struct zebra_pbr_iptable *zpi =
3478 XCALLOC(MTYPE_TMP, sizeof(struct zebra_pbr_iptable));
bf094f69
QY		 3479 struct stream *s;
3480
3481 s = msg;
3482
8b5c4dce
QY		 3483 zpi->interface_name_list = list_new();
3484 zpi->sock = client->sock;
3485 zpi->vrf_id = zvrf->vrf->vrf_id;
3486 STREAM_GETL(s, zpi->unique);
3487 STREAM_GETL(s, zpi->type);
3488 STREAM_GETL(s, zpi->filter_bm);
3489 STREAM_GETL(s, zpi->action);
3490 STREAM_GETL(s, zpi->fwmark);
3491 STREAM_GET(&zpi->ipset_name, s, ZEBRA_IPSET_NAME_SIZE);
a60b7031 3492 STREAM_GETC(s, zpi->family);
8b5c4dce
QY		 3493 STREAM_GETW(s, zpi->pkt_len_min);
3494 STREAM_GETW(s, zpi->pkt_len_max);
3495 STREAM_GETW(s, zpi->tcp_flags);
3496 STREAM_GETW(s, zpi->tcp_mask_flags);
3497 STREAM_GETC(s, zpi->dscp_value);
3498 STREAM_GETC(s, zpi->fragment);
3499 STREAM_GETC(s, zpi->protocol);
a60b7031 3500 STREAM_GETW(s, zpi->flow_label);
8b5c4dce
QY		 3501 STREAM_GETL(s, zpi->nb_interface);
3502 zebra_pbr_iptable_update_interfacelist(s, zpi);
bf094f69
QY		 3503
3504 if (hdr->command == ZEBRA_IPTABLE_ADD)
8b5c4dce 3505 zebra_pbr_add_iptable(zpi);
bf094f69 3506 else
8b5c4dce
QY		 3507 zebra_pbr_del_iptable(zpi);
3508
bf094f69 3509stream_failure:
8b5c4dce
QY		 3510 zebra_pbr_iptable_free(zpi);
3511 zpi = NULL;
bf094f69
QY		 3512 return;
3513}
3514
d68e74b4
JU		 3515static inline void zread_neigh_discover(ZAPI_HANDLER_ARGS)
3516{
3517 struct stream *s;
3518 ifindex_t ifindex;
3519 struct interface *ifp;
3520 struct prefix p;
3521 struct ipaddr ip;
3522
3523 s = msg;
3524
3525 STREAM_GETL(s, ifindex);
3526
3527 ifp = if_lookup_by_index_per_ns(zvrf->zns, ifindex);
3528 if (!ifp) {
3529 zlog_debug("Failed to lookup ifindex: %u", ifindex);
3530 return;
3531 }
3532
3533 STREAM_GETC(s, p.family);
3534 STREAM_GETC(s, p.prefixlen);
3535 STREAM_GET(&p.u.prefix, s, prefix_blen(&p));
3536
3537 if (p.family == AF_INET)
3538 SET_IPADDR_V4(&ip);
3539 else
3540 SET_IPADDR_V6(&ip);
3541
3542 memcpy(&ip.ip.addr, &p.u.prefix, prefix_blen(&p));
3543
3544 dplane_neigh_discover(ifp, &ip);
3545
3546stream_failure:
3547 return;
3548}
3549
b716ab61
PG		 3550static inline void zebra_gre_source_set(ZAPI_HANDLER_ARGS)
3551{
3552 struct stream *s;
3553 ifindex_t idx, link_idx;
3554 vrf_id_t link_vrf_id;
3555 struct interface *ifp;
3556 struct interface *ifp_link;
b716ab61 3557 vrf_id_t vrf_id = zvrf->vrf->vrf_id;
62b4b7e4
PG		 3558 struct zebra_if *zif, *gre_zif;
3559 struct zebra_l2info_gre *gre_info;
db51f0cd 3560 unsigned int mtu;
b716ab61
PG		 3561
3562 s = msg;
3563 STREAM_GETL(s, idx);
3564 ifp = if_lookup_by_index(idx, vrf_id);
3565 STREAM_GETL(s, link_idx);
3566 STREAM_GETL(s, link_vrf_id);
db51f0cd 3567 STREAM_GETL(s, mtu);
62b4b7e4 3568
b716ab61
PG		 3569 ifp_link = if_lookup_by_index(link_idx, link_vrf_id);
3570 if (!ifp_link || !ifp) {
3571 zlog_warn("GRE (index %u, VRF %u) or GRE link interface (index %u, VRF %u) not found, when setting GRE params",
3572 idx, vrf_id, link_idx, link_vrf_id);
3573 return;
3574 }
62b4b7e4
PG		 3575
3576 if (!IS_ZEBRA_IF_GRE(ifp))
3577 return;
3578
3579 gre_zif = (struct zebra_if *)ifp->info;
3580 zif = (struct zebra_if *)ifp_link->info;
3581 if (!zif || !gre_zif)
3582 return;
3583
3584 gre_info = &zif->l2info.gre;
3585 if (!gre_info)
3586 return;
3587
db51f0cd
PG		 3588 if (!mtu)
3589 mtu = ifp->mtu;
3590
3591 /* if gre link already set or mtu did not change, do not set it */
3592 if (gre_zif->link && gre_zif->link == ifp_link && mtu == ifp->mtu)
62b4b7e4
PG		 3593 return;
3594
e3d3fa06 3595 dplane_gre_set(ifp, ifp_link, mtu, gre_info);
b716ab61
PG		 3596
3597 stream_failure:
3598 return;
3599}
3600
9ab0b2a3
SW		 3601static void zsend_error_msg(struct zserv *client, enum zebra_error_types error,
3602 struct zmsghdr *bad_hdr)
3603{
3604
3605 struct stream *s = stream_new(ZEBRA_MAX_PACKET_SIZ);
3606
3607 zclient_create_header(s, ZEBRA_ERROR, bad_hdr->vrf_id);
3608
3609 zserv_encode_error(s, error);
3610
3611 client->error_cnt++;
3612 zserv_send_message(client, s);
3613}
3614
3615static void zserv_error_no_vrf(ZAPI_HANDLER_ARGS)
3616{
3617 if (IS_ZEBRA_DEBUG_PACKET && IS_ZEBRA_DEBUG_RECV)
3618 zlog_debug("ZAPI message specifies unknown VRF: %d",
3619 hdr->vrf_id);
3620
5ee080f0 3621 zsend_error_msg(client, ZEBRA_NO_VRF, hdr);
9ab0b2a3
SW		 3622}
3623
3624static void zserv_error_invalid_msg_type(ZAPI_HANDLER_ARGS)
3625{
3626 zlog_info("Zebra received unknown command %d", hdr->command);
3627
5ee080f0 3628 zsend_error_msg(client, ZEBRA_INVALID_MSG_TYPE, hdr);
9ab0b2a3
SW		 3629}
3630
2b64873d 3631void (*const zserv_handlers[])(ZAPI_HANDLER_ARGS) = {
bf094f69
QY		 3632 [ZEBRA_ROUTER_ID_ADD] = zread_router_id_add,
3633 [ZEBRA_ROUTER_ID_DELETE] = zread_router_id_delete,
3634 [ZEBRA_INTERFACE_ADD] = zread_interface_add,
3635 [ZEBRA_INTERFACE_DELETE] = zread_interface_delete,
c3bd894e 3636 [ZEBRA_INTERFACE_SET_PROTODOWN] = zread_interface_set_protodown,
bf094f69
QY		 3637 [ZEBRA_ROUTE_ADD] = zread_route_add,
3638 [ZEBRA_ROUTE_DELETE] = zread_route_del,
bf094f69
QY		 3639 [ZEBRA_REDISTRIBUTE_ADD] = zebra_redistribute_add,
3640 [ZEBRA_REDISTRIBUTE_DELETE] = zebra_redistribute_delete,
3641 [ZEBRA_REDISTRIBUTE_DEFAULT_ADD] = zebra_redistribute_default_add,
3642 [ZEBRA_REDISTRIBUTE_DEFAULT_DELETE] = zebra_redistribute_default_delete,
3643 [ZEBRA_IPV4_NEXTHOP_LOOKUP_MRIB] = zread_ipv4_nexthop_lookup_mrib,
3644 [ZEBRA_HELLO] = zread_hello,
3645 [ZEBRA_NEXTHOP_REGISTER] = zread_rnh_register,
3646 [ZEBRA_NEXTHOP_UNREGISTER] = zread_rnh_unregister,
3647 [ZEBRA_IMPORT_ROUTE_REGISTER] = zread_rnh_register,
3648 [ZEBRA_IMPORT_ROUTE_UNREGISTER] = zread_rnh_unregister,
3649 [ZEBRA_BFD_DEST_UPDATE] = zebra_ptm_bfd_dst_register,
3650 [ZEBRA_BFD_DEST_REGISTER] = zebra_ptm_bfd_dst_register,
3651 [ZEBRA_BFD_DEST_DEREGISTER] = zebra_ptm_bfd_dst_deregister,
d3af6147
RZ		 3652#if HAVE_BFDD > 0
3653 [ZEBRA_BFD_DEST_REPLAY] = zebra_ptm_bfd_dst_replay,
3654#endif /* HAVE_BFDD */
bf094f69
QY		 3655 [ZEBRA_VRF_UNREGISTER] = zread_vrf_unregister,
3656 [ZEBRA_VRF_LABEL] = zread_vrf_label,
3657 [ZEBRA_BFD_CLIENT_REGISTER] = zebra_ptm_bfd_client_register,
bf094f69
QY		 3658 [ZEBRA_INTERFACE_ENABLE_RADV] = zebra_interface_radv_enable,
3659 [ZEBRA_INTERFACE_DISABLE_RADV] = zebra_interface_radv_disable,
31f937fb
SM		 3660 [ZEBRA_SR_POLICY_SET] = zread_sr_policy_set,
3661 [ZEBRA_SR_POLICY_DELETE] = zread_sr_policy_delete,
ea6b290b
RW		 3662 [ZEBRA_MPLS_LABELS_ADD] = zread_mpls_labels_add,
3663 [ZEBRA_MPLS_LABELS_DELETE] = zread_mpls_labels_delete,
3664 [ZEBRA_MPLS_LABELS_REPLACE] = zread_mpls_labels_replace,
bf094f69
QY		 3665 [ZEBRA_IPMR_ROUTE_STATS] = zebra_ipmr_route_stats,
3666 [ZEBRA_LABEL_MANAGER_CONNECT] = zread_label_manager_request,
f533be73 3667 [ZEBRA_LABEL_MANAGER_CONNECT_ASYNC] = zread_label_manager_request,
bf094f69
QY		 3668 [ZEBRA_GET_LABEL_CHUNK] = zread_label_manager_request,
3669 [ZEBRA_RELEASE_LABEL_CHUNK] = zread_label_manager_request,
3670 [ZEBRA_FEC_REGISTER] = zread_fec_register,
3671 [ZEBRA_FEC_UNREGISTER] = zread_fec_unregister,
3672 [ZEBRA_ADVERTISE_DEFAULT_GW] = zebra_vxlan_advertise_gw_macip,
278e26de 3673 [ZEBRA_ADVERTISE_SVI_MACIP] = zebra_vxlan_advertise_svi_macip,
bf094f69
QY		 3674 [ZEBRA_ADVERTISE_SUBNET] = zebra_vxlan_advertise_subnet,
3675 [ZEBRA_ADVERTISE_ALL_VNI] = zebra_vxlan_advertise_all_vni,
ce5160c0
AK		 3676 [ZEBRA_REMOTE_ES_VTEP_ADD] = zebra_evpn_proc_remote_es,
3677 [ZEBRA_REMOTE_ES_VTEP_DEL] = zebra_evpn_proc_remote_es,
7e5b0b2b
MS		 3678 [ZEBRA_REMOTE_VTEP_ADD] = zebra_vxlan_remote_vtep_add_zapi,
3679 [ZEBRA_REMOTE_VTEP_DEL] = zebra_vxlan_remote_vtep_del_zapi,
bf094f69
QY		 3680 [ZEBRA_REMOTE_MACIP_ADD] = zebra_vxlan_remote_macip_add,
3681 [ZEBRA_REMOTE_MACIP_DEL] = zebra_vxlan_remote_macip_del,
3950b52c 3682 [ZEBRA_DUPLICATE_ADDR_DETECTION] = zebra_vxlan_dup_addr_detection,
bf094f69
QY		 3683 [ZEBRA_INTERFACE_SET_MASTER] = zread_interface_set_master,
3684 [ZEBRA_PW_ADD] = zread_pseudowire,
3685 [ZEBRA_PW_DELETE] = zread_pseudowire,
3686 [ZEBRA_PW_SET] = zread_pseudowire,
3687 [ZEBRA_PW_UNSET] = zread_pseudowire,
3688 [ZEBRA_RULE_ADD] = zread_rule,
3689 [ZEBRA_RULE_DELETE] = zread_rule,
3690 [ZEBRA_TABLE_MANAGER_CONNECT] = zread_table_manager_request,
3691 [ZEBRA_GET_TABLE_CHUNK] = zread_table_manager_request,
3692 [ZEBRA_RELEASE_TABLE_CHUNK] = zread_table_manager_request,
3693 [ZEBRA_IPSET_CREATE] = zread_ipset,
3694 [ZEBRA_IPSET_DESTROY] = zread_ipset,
3695 [ZEBRA_IPSET_ENTRY_ADD] = zread_ipset_entry,
3696 [ZEBRA_IPSET_ENTRY_DELETE] = zread_ipset_entry,
3697 [ZEBRA_IPTABLE_ADD] = zread_iptable,
3698 [ZEBRA_IPTABLE_DELETE] = zread_iptable,
fbac9605 3699 [ZEBRA_VXLAN_FLOOD_CONTROL] = zebra_vxlan_flood_control,
ecbbc3a7 3700 [ZEBRA_VXLAN_SG_REPLAY] = zebra_vxlan_sg_replay,
ee235396
SK		 3701 [ZEBRA_MLAG_CLIENT_REGISTER] = zebra_mlag_client_register,
3702 [ZEBRA_MLAG_CLIENT_UNREGISTER] = zebra_mlag_client_unregister,
3703 [ZEBRA_MLAG_FORWARD_MSG] = zebra_mlag_forward_client_msg,
6e68a084
HS		 3704 [ZEBRA_SRV6_MANAGER_GET_LOCATOR_CHUNK] = zread_srv6_manager_request,
3705 [ZEBRA_SRV6_MANAGER_RELEASE_LOCATOR_CHUNK] = zread_srv6_manager_request,
d68e74b4 3706 [ZEBRA_CLIENT_CAPABILITIES] = zread_client_capabilities,
2f35a820 3707 [ZEBRA_NEIGH_DISCOVER] = zread_neigh_discover,
8b2d3a0f 3708 [ZEBRA_NHG_ADD] = zread_nhg_add,
2f35a820 3709 [ZEBRA_NHG_DEL] = zread_nhg_del,
77b38a4a 3710 [ZEBRA_ROUTE_NOTIFY_REQUEST] = zread_route_notify_request,
7bfa7d02
AK		 3711 [ZEBRA_EVPN_REMOTE_NH_ADD] = zebra_evpn_proc_remote_nh,
3712 [ZEBRA_EVPN_REMOTE_NH_DEL] = zebra_evpn_proc_remote_nh,
d603c077
PG		 3713 [ZEBRA_NEIGH_IP_ADD] = zebra_neigh_ip_add,
3714 [ZEBRA_NEIGH_IP_DEL] = zebra_neigh_ip_del,
7723e8d3
PG		 3715 [ZEBRA_NHRP_NEIGH_REGISTER] = zebra_neigh_register,
3716 [ZEBRA_NHRP_NEIGH_UNREGISTER] = zebra_neigh_unregister,
541025d6 3717 [ZEBRA_CONFIGURE_ARP] = zebra_configure_arp,
d17af8dd 3718 [ZEBRA_GRE_GET] = zebra_gre_get,
b716ab61 3719 [ZEBRA_GRE_SOURCE_SET] = zebra_gre_source_set,
2f35a820 3720};
bf094f69 3721
79b3664a
MS		 3722/*
3723 * Process a batch of zapi messages.
3724 */
3725void zserv_handle_commands(struct zserv *client, struct stream_fifo *fifo)
bf094f69 3726{
904e0d88
QY		 3727 struct zmsghdr hdr;
3728 struct zebra_vrf *zvrf;
79b3664a
MS		 3729 struct stream *msg;
3730 struct stream_fifo temp_fifo;
904e0d88 3731
79b3664a 3732 stream_fifo_init(&temp_fifo);
aa8cb964 3733
79b3664a
MS		 3734 while (stream_fifo_head(fifo)) {
3735 msg = stream_fifo_pop(fifo);
bf094f69 3736
79b3664a
MS		 3737 if (STREAM_READABLE(msg) > ZEBRA_MAX_PACKET_SIZ) {
3738 if (IS_ZEBRA_DEBUG_PACKET && IS_ZEBRA_DEBUG_RECV)
3739 zlog_debug(
3740 "ZAPI message is %zu bytes long but the maximum packet size is %u; dropping",
3741 STREAM_READABLE(msg),
3742 ZEBRA_MAX_PACKET_SIZ);
3743 goto continue_loop;
3744 }
3745
3746 zapi_parse_header(msg, &hdr);
3747
ec64a77b
DS		 3748 if (IS_ZEBRA_DEBUG_PACKET && IS_ZEBRA_DEBUG_RECV
3749 && IS_ZEBRA_DEBUG_DETAIL)
79b3664a 3750 zserv_log_message(NULL, msg, &hdr);
49b3b01f 3751
79b3664a 3752 hdr.length -= ZEBRA_HEADER_SIZE;
904e0d88 3753
79b3664a
MS		 3754 /* Before checking for a handler function, check for
3755 * special messages that are handled in another module;
3756 * we'll treat these as opaque.
3757 */
3758 if (zebra_opaque_handles_msgid(hdr.command)) {
3759 /* Reset message buffer */
3760 stream_set_getp(msg, 0);
3761
3762 stream_fifo_push(&temp_fifo, msg);
3763
3764 /* Continue without freeing the message */
3765 msg = NULL;
3766 goto continue_loop;
3767 }
3768
3769 /* lookup vrf */
3770 zvrf = zebra_vrf_lookup_by_id(hdr.vrf_id);
3771 if (!zvrf) {
3772 zserv_error_no_vrf(client, &hdr, msg, zvrf);
3773 goto continue_loop;
3774 }
3775
3776 if (hdr.command >= array_size(zserv_handlers)
3777 || zserv_handlers[hdr.command] == NULL) {
3778 zserv_error_invalid_msg_type(client, &hdr, msg, zvrf);
3779 goto continue_loop;
3780 }
3781
3782 zserv_handlers[hdr.command](client, &hdr, msg, zvrf);
3783
3784continue_loop:
3785 stream_free(msg);
3786 }
904e0d88 3787
79b3664a
MS		 3788 /* Dispatch any special messages from the temp fifo */
3789 if (stream_fifo_head(&temp_fifo) != NULL)
3790 zebra_opaque_enqueue_batch(&temp_fifo);
9ab0b2a3 3791
79b3664a 3792 stream_fifo_deinit(&temp_fifo);
bf094f69 3793}
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