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Merge pull request #5706 from mjstapp/fix_nh_debug_show
[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"
27#include "lib/command.h"
28#include "lib/if.h"
29#include "lib/thread.h"
30#include "lib/stream.h"
31#include "lib/memory.h"
32#include "lib/table.h"
33#include "lib/network.h"
34#include "lib/sockunion.h"
35#include "lib/log.h"
36#include "lib/zclient.h"
37#include "lib/privs.h"
38#include "lib/network.h"
39#include "lib/buffer.h"
40#include "lib/nexthop.h"
41#include "lib/vrf.h"
42#include "lib/libfrr.h"
43#include "lib/sockopt.h"
5e7939a5 44#include "lib/lib_errors.h"
bf094f69 45
161e9ab7 46#include "zebra/zebra_router.h"
bf094f69
QY		 47#include "zebra/rib.h"
48#include "zebra/zebra_memory.h"
49#include "zebra/zebra_ns.h"
50#include "zebra/zebra_vrf.h"
51#include "zebra/router-id.h"
52#include "zebra/redistribute.h"
53#include "zebra/debug.h"
54#include "zebra/zebra_rnh.h"
55#include "zebra/rt_netlink.h"
56#include "zebra/interface.h"
57#include "zebra/zebra_ptm.h"
58#include "zebra/rtadv.h"
59#include "zebra/zebra_mpls.h"
60#include "zebra/zebra_mroute.h"
bf094f69
QY		 61#include "zebra/zebra_vxlan.h"
62#include "zebra/rt.h"
63#include "zebra/zebra_pbr.h"
64#include "zebra/table_manager.h"
65#include "zebra/zapi_msg.h"
364fed6b 66#include "zebra/zebra_errors.h"
02c0866d 67#include "zebra/zebra_mlag.h"
54bea4e5 68#include "zebra/connected.h"
bf094f69
QY		 69
70/* Encoding helpers -------------------------------------------------------- */
71
72static void zserv_encode_interface(struct stream *s, struct interface *ifp)
73{
74 /* Interface information. */
53e60e5c 75 struct zebra_if *zif = ifp->info;
19c38250 76
bf094f69
QY		 77 stream_put(s, ifp->name, INTERFACE_NAMSIZ);
78 stream_putl(s, ifp->ifindex);
79 stream_putc(s, ifp->status);
80 stream_putq(s, ifp->flags);
81 stream_putc(s, ifp->ptm_enable);
82 stream_putc(s, ifp->ptm_status);
83 stream_putl(s, ifp->metric);
84 stream_putl(s, ifp->speed);
85 stream_putl(s, ifp->mtu);
86 stream_putl(s, ifp->mtu6);
87 stream_putl(s, ifp->bandwidth);
53e60e5c 88 stream_putl(s, zif->link_ifindex);
bf094f69
QY		 89 stream_putl(s, ifp->ll_type);
90 stream_putl(s, ifp->hw_addr_len);
91 if (ifp->hw_addr_len)
92 stream_put(s, ifp->hw_addr, ifp->hw_addr_len);
93
94 /* Then, Traffic Engineering parameters if any */
95 if (HAS_LINK_PARAMS(ifp) && IS_LINK_PARAMS_SET(ifp->link_params)) {
96 stream_putc(s, 1);
97 zebra_interface_link_params_write(s, ifp);
98 } else
99 stream_putc(s, 0);
100
101 /* Write packet size. */
102 stream_putw_at(s, 0, stream_get_endp(s));
103}
104
105static void zserv_encode_vrf(struct stream *s, struct zebra_vrf *zvrf)
106{
107 struct vrf_data data;
108 const char *netns_name = zvrf_ns_name(zvrf);
109
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
161e9ab7 386 for (ALL_LIST_ELEMENTS(zrouter.client_list, node, nnode, client))
bf094f69
QY		 387 zsend_interface_nbr_address(ZEBRA_INTERFACE_NBR_ADDRESS_ADD,
388 client, ifp, ifc);
389}
390
391/* Interface address deletion. */
392static void zebra_interface_nbr_address_delete_update(struct interface *ifp,
393 struct nbr_connected *ifc)
394{
395 struct listnode *node, *nnode;
396 struct zserv *client;
397 struct prefix *p;
398
399 if (IS_ZEBRA_DEBUG_EVENT) {
400 char buf[INET6_ADDRSTRLEN];
401
402 p = ifc->address;
403 zlog_debug(
404 "MESSAGE: ZEBRA_INTERFACE_NBR_ADDRESS_DELETE %s/%d on %s",
405 inet_ntop(p->family, &p->u.prefix, buf,
406 INET6_ADDRSTRLEN),
407 p->prefixlen, ifc->ifp->name);
408 }
409
161e9ab7 410 for (ALL_LIST_ELEMENTS(zrouter.client_list, node, nnode, client))
bf094f69
QY		 411 zsend_interface_nbr_address(ZEBRA_INTERFACE_NBR_ADDRESS_DELETE,
412 client, ifp, ifc);
413}
414
415/* Send addresses on interface to client */
416int zsend_interface_addresses(struct zserv *client, struct interface *ifp)
417{
418 struct listnode *cnode, *cnnode;
419 struct connected *c;
420 struct nbr_connected *nc;
421
422 /* Send interface addresses. */
423 for (ALL_LIST_ELEMENTS(ifp->connected, cnode, cnnode, c)) {
424 if (!CHECK_FLAG(c->conf, ZEBRA_IFC_REAL))
425 continue;
426
427 if (zsend_interface_address(ZEBRA_INTERFACE_ADDRESS_ADD, client,
428 ifp, c)
429 < 0)
430 return -1;
431 }
432
433 /* Send interface neighbors. */
434 for (ALL_LIST_ELEMENTS(ifp->nbr_connected, cnode, cnnode, nc)) {
435 if (zsend_interface_nbr_address(ZEBRA_INTERFACE_NBR_ADDRESS_ADD,
436 client, ifp, nc)
437 < 0)
438 return -1;
439 }
440
441 return 0;
442}
443
444/* Notify client about interface moving from one VRF to another.
445 * Whether client is interested in old and new VRF is checked by caller.
446 */
447int zsend_interface_vrf_update(struct zserv *client, struct interface *ifp,
448 vrf_id_t vrf_id)
449{
450 struct stream *s = stream_new(ZEBRA_MAX_PACKET_SIZ);
451
a36898e7 452 zclient_create_header(s, ZEBRA_INTERFACE_VRF_UPDATE, ifp->vrf_id);
bf094f69 453
91d227b7
RW		 454 /* Fill in the name of the interface and its new VRF (id) */
455 stream_put(s, ifp->name, INTERFACE_NAMSIZ);
bf094f69
QY		 456 stream_putl(s, vrf_id);
457
458 /* Write packet size. */
459 stream_putw_at(s, 0, stream_get_endp(s));
460
461 client->if_vrfchg_cnt++;
21ccc0cf 462 return zserv_send_message(client, s);
bf094f69
QY		 463}
464
465/* Add new nbr connected IPv6 address */
466void nbr_connected_add_ipv6(struct interface *ifp, struct in6_addr *address)
467{
468 struct nbr_connected *ifc;
469 struct prefix p;
470
471 p.family = AF_INET6;
a85297a7 472 IPV6_ADDR_COPY(&p.u.prefix6, address);
bf094f69
QY		 473 p.prefixlen = IPV6_MAX_PREFIXLEN;
474
8b1766b1
QY		 475 ifc = listnode_head(ifp->nbr_connected);
476 if (!ifc) {
bf094f69
QY		 477 /* new addition */
478 ifc = nbr_connected_new();
479 ifc->address = prefix_new();
480 ifc->ifp = ifp;
481 listnode_add(ifp->nbr_connected, ifc);
482 }
483
484 prefix_copy(ifc->address, &p);
485
486 zebra_interface_nbr_address_add_update(ifp, ifc);
487
488 if_nbr_ipv6ll_to_ipv4ll_neigh_update(ifp, address, 1);
489}
490
491void nbr_connected_delete_ipv6(struct interface *ifp, struct in6_addr *address)
492{
493 struct nbr_connected *ifc;
494 struct prefix p;
495
496 p.family = AF_INET6;
a85297a7 497 IPV6_ADDR_COPY(&p.u.prefix6, address);
bf094f69
QY		 498 p.prefixlen = IPV6_MAX_PREFIXLEN;
499
500 ifc = nbr_connected_check(ifp, &p);
501 if (!ifc)
502 return;
503
504 listnode_delete(ifp->nbr_connected, ifc);
505
506 zebra_interface_nbr_address_delete_update(ifp, ifc);
507
508 if_nbr_ipv6ll_to_ipv4ll_neigh_update(ifp, address, 0);
509
510 nbr_connected_free(ifc);
511}
512
513/*
514 * The cmd passed to zsend_interface_update may be ZEBRA_INTERFACE_UP or
515 * ZEBRA_INTERFACE_DOWN.
516 *
517 * The ZEBRA_INTERFACE_UP message is sent from the zebra server to
518 * the clients in one of 2 situations:
519 * - an if_up is detected e.g., as a result of an RTM_IFINFO message
520 * - a vty command modifying the bandwidth of an interface is received.
521 * The ZEBRA_INTERFACE_DOWN message is sent when an if_down is detected.
522 */
523int zsend_interface_update(int cmd, struct zserv *client, struct interface *ifp)
524{
525 struct stream *s = stream_new(ZEBRA_MAX_PACKET_SIZ);
526
a36898e7 527 zclient_create_header(s, cmd, ifp->vrf_id);
bf094f69
QY		 528 zserv_encode_interface(s, ifp);
529
530 if (cmd == ZEBRA_INTERFACE_UP)
531 client->ifup_cnt++;
532 else
533 client->ifdown_cnt++;
534
21ccc0cf 535 return zserv_send_message(client, s);
bf094f69
QY		 536}
537
86391e56
MS		 538int zsend_redistribute_route(int cmd, struct zserv *client,
539 const struct prefix *p,
40f321c0
MS		 540 const struct prefix *src_p,
541 const struct route_entry *re)
bf094f69
QY		 542{
543 struct zapi_route api;
544 struct zapi_nexthop *api_nh;
545 struct nexthop *nexthop;
9a0d4dd3 546 uint8_t count = 0;
34fa0870 547 afi_t afi;
f3f45626
DS		 548 size_t stream_size =
549 MAX(ZEBRA_MAX_PACKET_SIZ, sizeof(struct zapi_route));
bf094f69
QY		 550
551 memset(&api, 0, sizeof(api));
552 api.vrf_id = re->vrf_id;
553 api.type = re->type;
e4081c0e 554 api.safi = SAFI_UNICAST;
bf094f69
QY		 555 api.instance = re->instance;
556 api.flags = re->flags;
557
34fa0870
DS		 558 afi = family2afi(p->family);
559 switch (afi) {
560 case AFI_IP:
561 if (cmd == ZEBRA_REDISTRIBUTE_ROUTE_ADD)
562 client->redist_v4_add_cnt++;
563 else
564 client->redist_v4_del_cnt++;
565 break;
566 case AFI_IP6:
567 if (cmd == ZEBRA_REDISTRIBUTE_ROUTE_ADD)
568 client->redist_v6_add_cnt++;
569 else
570 client->redist_v6_del_cnt++;
571 break;
572 default:
573 break;
574 }
575
bf094f69
QY		 576 /* Prefix. */
577 api.prefix = *p;
578 if (src_p) {
579 SET_FLAG(api.message, ZAPI_MESSAGE_SRCPFX);
580 memcpy(&api.src_prefix, src_p, sizeof(api.src_prefix));
581 }
582
0eb97b86
MS		 583 for (nexthop = re->nhe->nhg->nexthop;
584 nexthop; nexthop = nexthop->next) {
bf094f69
QY		 585 if (!CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE))
586 continue;
587
588 api_nh = &api.nexthops[count];
589 api_nh->vrf_id = nexthop->vrf_id;
590 api_nh->type = nexthop->type;
bd054c1a 591 api_nh->weight = nexthop->weight;
bf094f69
QY		 592 switch (nexthop->type) {
593 case NEXTHOP_TYPE_BLACKHOLE:
594 api_nh->bh_type = nexthop->bh_type;
595 break;
596 case NEXTHOP_TYPE_IPV4:
597 api_nh->gate.ipv4 = nexthop->gate.ipv4;
598 break;
599 case NEXTHOP_TYPE_IPV4_IFINDEX:
600 api_nh->gate.ipv4 = nexthop->gate.ipv4;
601 api_nh->ifindex = nexthop->ifindex;
602 break;
603 case NEXTHOP_TYPE_IFINDEX:
604 api_nh->ifindex = nexthop->ifindex;
605 break;
606 case NEXTHOP_TYPE_IPV6:
607 api_nh->gate.ipv6 = nexthop->gate.ipv6;
608 break;
609 case NEXTHOP_TYPE_IPV6_IFINDEX:
610 api_nh->gate.ipv6 = nexthop->gate.ipv6;
611 api_nh->ifindex = nexthop->ifindex;
612 }
613 count++;
614 }
615
9a0d4dd3
DS		 616 /* Nexthops. */
617 if (count) {
618 SET_FLAG(api.message, ZAPI_MESSAGE_NEXTHOP);
619 api.nexthop_num = count;
620 }
621
bf094f69
QY		 622 /* Attributes. */
623 SET_FLAG(api.message, ZAPI_MESSAGE_DISTANCE);
624 api.distance = re->distance;
625 SET_FLAG(api.message, ZAPI_MESSAGE_METRIC);
626 api.metric = re->metric;
627 if (re->tag) {
628 SET_FLAG(api.message, ZAPI_MESSAGE_TAG);
629 api.tag = re->tag;
630 }
631 SET_FLAG(api.message, ZAPI_MESSAGE_MTU);
632 api.mtu = re->mtu;
633
f3f45626 634 struct stream *s = stream_new(stream_size);
bf094f69
QY		 635
636 /* Encode route and send. */
637 if (zapi_route_encode(cmd, s, &api) < 0) {
638 stream_free(s);
639 return -1;
640 }
641
642 if (IS_ZEBRA_DEBUG_SEND) {
643 char buf_prefix[PREFIX_STRLEN];
8b1766b1 644
bf094f69
QY		 645 prefix2str(&api.prefix, buf_prefix, sizeof(buf_prefix));
646
647 zlog_debug("%s: %s to client %s: type %s, vrf_id %d, p %s",
648 __func__, zserv_command_string(cmd),
649 zebra_route_string(client->proto),
650 zebra_route_string(api.type), api.vrf_id,
651 buf_prefix);
652 }
21ccc0cf 653 return zserv_send_message(client, s);
bf094f69
QY		 654}
655
656/*
657 * Modified version of zsend_ipv4_nexthop_lookup(): Query unicast rib if
658 * nexthop is not found on mrib. Returns both route metric and protocol
659 * distance.
660 */
661static int zsend_ipv4_nexthop_lookup_mrib(struct zserv *client,
662 struct in_addr addr,
663 struct route_entry *re,
664 struct zebra_vrf *zvrf)
665{
666 struct stream *s;
667 unsigned long nump;
668 uint8_t num;
669 struct nexthop *nexthop;
670
671 /* Get output stream. */
672 s = stream_new(ZEBRA_MAX_PACKET_SIZ);
673 stream_reset(s);
674
675 /* Fill in result. */
676 zclient_create_header(s, ZEBRA_IPV4_NEXTHOP_LOOKUP_MRIB, zvrf_id(zvrf));
677 stream_put_in_addr(s, &addr);
678
679 if (re) {
680 stream_putc(s, re->distance);
681 stream_putl(s, re->metric);
682 num = 0;
8b1766b1
QY		 683 /* remember position for nexthop_num */
684 nump = stream_get_endp(s);
685 /* reserve room for nexthop_num */
686 stream_putc(s, 0);
687 /*
688 * Only non-recursive routes are elegible to resolve the
689 * nexthop we are looking up. Therefore, we will just iterate
690 * over the top chain of nexthops.
691 */
0eb97b86 692 for (nexthop = re->nhe->nhg->nexthop; nexthop;
6b468511 693 nexthop = nexthop->next)
bf094f69
QY		 694 if (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE))
695 num += zserv_encode_nexthop(s, nexthop);
696
8b1766b1
QY		 697 /* store nexthop_num */
698 stream_putc_at(s, nump, num);
bf094f69
QY		 699 } else {
700 stream_putc(s, 0); /* distance */
701 stream_putl(s, 0); /* metric */
702 stream_putc(s, 0); /* nexthop_num */
703 }
704
705 stream_putw_at(s, 0, stream_get_endp(s));
706
21ccc0cf 707 return zserv_send_message(client, s);
bf094f69
QY		 708}
709
86391e56
MS		 710/*
711 * Common utility send route notification, called from a path using a
712 * route_entry and from a path using a dataplane context.
713 */
714static int route_notify_internal(const struct prefix *p, int type,
715 uint16_t instance, vrf_id_t vrf_id,
716 uint32_t table_id,
717 enum zapi_route_notify_owner note)
bf094f69
QY		 718{
719 struct zserv *client;
720 struct stream *s;
721 uint8_t blen;
722
86391e56 723 client = zserv_find_client(type, instance);
bf094f69
QY		 724 if (!client || !client->notify_owner) {
725 if (IS_ZEBRA_DEBUG_PACKET) {
726 char buff[PREFIX_STRLEN];
727
728 zlog_debug(
729 "Not Notifying Owner: %u about prefix %s(%u) %d vrf: %u",
86391e56
MS		 730 type, prefix2str(p, buff, sizeof(buff)),
731 table_id, note, vrf_id);
bf094f69
QY		 732 }
733 return 0;
734 }
735
736 if (IS_ZEBRA_DEBUG_PACKET) {
737 char buff[PREFIX_STRLEN];
738
739 zlog_debug("Notifying Owner: %u about prefix %s(%u) %d vrf: %u",
86391e56
MS		 740 type, prefix2str(p, buff, sizeof(buff)),
741 table_id, note, vrf_id);
bf094f69
QY		 742 }
743
744 s = stream_new(ZEBRA_MAX_PACKET_SIZ);
745 stream_reset(s);
746
86391e56 747 zclient_create_header(s, ZEBRA_ROUTE_NOTIFY_OWNER, vrf_id);
bf094f69
QY		 748
749 stream_put(s, &note, sizeof(note));
750
751 stream_putc(s, p->family);
752
753 blen = prefix_blen(p);
754 stream_putc(s, p->prefixlen);
755 stream_put(s, &p->u.prefix, blen);
756
86391e56 757 stream_putl(s, table_id);
bf094f69
QY		 758
759 stream_putw_at(s, 0, stream_get_endp(s));
760
21ccc0cf 761 return zserv_send_message(client, s);
bf094f69
QY		 762}
763
86391e56
MS		 764int zsend_route_notify_owner(struct route_entry *re, const struct prefix *p,
765 enum zapi_route_notify_owner note)
766{
767 return (route_notify_internal(p, re->type, re->instance, re->vrf_id,
768 re->table, note));
769}
770
7cdb1a84
MS		 771/*
772 * Route-owner notification using info from dataplane update context.
773 */
25779064 774int zsend_route_notify_owner_ctx(const struct zebra_dplane_ctx *ctx,
7cdb1a84
MS		 775 enum zapi_route_notify_owner note)
776{
777 return (route_notify_internal(dplane_ctx_get_dest(ctx),
778 dplane_ctx_get_type(ctx),
779 dplane_ctx_get_instance(ctx),
780 dplane_ctx_get_vrf(ctx),
781 dplane_ctx_get_table(ctx),
782 note));
86391e56
MS		 783}
784
bf094f69
QY		 785void zsend_rule_notify_owner(struct zebra_pbr_rule *rule,
786 enum zapi_rule_notify_owner note)
787{
788 struct listnode *node;
789 struct zserv *client;
790 struct stream *s;
791
792 if (IS_ZEBRA_DEBUG_PACKET)
793 zlog_debug("%s: Notifying %u", __PRETTY_FUNCTION__,
794 rule->rule.unique);
795
161e9ab7 796 for (ALL_LIST_ELEMENTS_RO(zrouter.client_list, node, client)) {
bf094f69
QY		 797 if (rule->sock == client->sock)
798 break;
799 }
800
801 if (!client)
802 return;
803
804 s = stream_new(ZEBRA_MAX_PACKET_SIZ);
805
806 zclient_create_header(s, ZEBRA_RULE_NOTIFY_OWNER, VRF_DEFAULT);
807 stream_put(s, &note, sizeof(note));
808 stream_putl(s, rule->rule.seq);
809 stream_putl(s, rule->rule.priority);
810 stream_putl(s, rule->rule.unique);
b19d55d0 811 stream_putl(s, rule->rule.ifindex);
bf094f69
QY		 812
813 stream_putw_at(s, 0, stream_get_endp(s));
814
21ccc0cf 815 zserv_send_message(client, s);
bf094f69
QY		 816}
817
818void zsend_ipset_notify_owner(struct zebra_pbr_ipset *ipset,
819 enum zapi_ipset_notify_owner note)
820{
821 struct listnode *node;
822 struct zserv *client;
823 struct stream *s;
824
825 if (IS_ZEBRA_DEBUG_PACKET)
826 zlog_debug("%s: Notifying %u", __PRETTY_FUNCTION__,
827 ipset->unique);
828
161e9ab7 829 for (ALL_LIST_ELEMENTS_RO(zrouter.client_list, node, client)) {
bf094f69
QY		 830 if (ipset->sock == client->sock)
831 break;
832 }
833
834 if (!client)
835 return;
836
837 s = stream_new(ZEBRA_MAX_PACKET_SIZ);
838
839 zclient_create_header(s, ZEBRA_IPSET_NOTIFY_OWNER, VRF_DEFAULT);
840 stream_put(s, &note, sizeof(note));
841 stream_putl(s, ipset->unique);
842 stream_put(s, ipset->ipset_name, ZEBRA_IPSET_NAME_SIZE);
843 stream_putw_at(s, 0, stream_get_endp(s));
844
21ccc0cf 845 zserv_send_message(client, s);
bf094f69
QY		 846}
847
848void zsend_ipset_entry_notify_owner(struct zebra_pbr_ipset_entry *ipset,
849 enum zapi_ipset_entry_notify_owner note)
850{
851 struct listnode *node;
852 struct zserv *client;
853 struct stream *s;
854
855 if (IS_ZEBRA_DEBUG_PACKET)
856 zlog_debug("%s: Notifying %u", __PRETTY_FUNCTION__,
857 ipset->unique);
858
161e9ab7 859 for (ALL_LIST_ELEMENTS_RO(zrouter.client_list, node, client)) {
bf094f69
QY		 860 if (ipset->sock == client->sock)
861 break;
862 }
863
864 if (!client)
865 return;
866
867 s = stream_new(ZEBRA_MAX_PACKET_SIZ);
868
869 zclient_create_header(s, ZEBRA_IPSET_ENTRY_NOTIFY_OWNER, VRF_DEFAULT);
870 stream_put(s, &note, sizeof(note));
871 stream_putl(s, ipset->unique);
872 stream_put(s, ipset->backpointer->ipset_name, ZEBRA_IPSET_NAME_SIZE);
873 stream_putw_at(s, 0, stream_get_endp(s));
874
21ccc0cf 875 zserv_send_message(client, s);
bf094f69
QY		 876}
877
878void zsend_iptable_notify_owner(struct zebra_pbr_iptable *iptable,
879 enum zapi_iptable_notify_owner note)
880{
881 struct listnode *node;
882 struct zserv *client;
883 struct stream *s;
884
885 if (IS_ZEBRA_DEBUG_PACKET)
886 zlog_debug("%s: Notifying %u", __PRETTY_FUNCTION__,
887 iptable->unique);
888
161e9ab7 889 for (ALL_LIST_ELEMENTS_RO(zrouter.client_list, node, client)) {
bf094f69
QY		 890 if (iptable->sock == client->sock)
891 break;
892 }
893
894 if (!client)
895 return;
896
897 s = stream_new(ZEBRA_MAX_PACKET_SIZ);
898
899 zclient_create_header(s, ZEBRA_IPTABLE_NOTIFY_OWNER, VRF_DEFAULT);
900 stream_put(s, &note, sizeof(note));
901 stream_putl(s, iptable->unique);
902 stream_putw_at(s, 0, stream_get_endp(s));
903
21ccc0cf 904 zserv_send_message(client, s);
bf094f69
QY		 905}
906
907/* Router-id is updated. Send ZEBRA_ROUTER_ID_ADD to client. */
908int zsend_router_id_update(struct zserv *client, struct prefix *p,
909 vrf_id_t vrf_id)
910{
911 int blen;
912
913 /* Check this client need interface information. */
914 if (!vrf_bitmap_check(client->ridinfo, vrf_id))
915 return 0;
916
917 struct stream *s = stream_new(ZEBRA_MAX_PACKET_SIZ);
918
919 /* Message type. */
920 zclient_create_header(s, ZEBRA_ROUTER_ID_UPDATE, vrf_id);
921
922 /* Prefix information. */
923 stream_putc(s, p->family);
924 blen = prefix_blen(p);
925 stream_put(s, &p->u.prefix, blen);
926 stream_putc(s, p->prefixlen);
927
928 /* Write packet size. */
929 stream_putw_at(s, 0, stream_get_endp(s));
930
21ccc0cf 931 return zserv_send_message(client, s);
bf094f69
QY		 932}
933
934/*
935 * Function used by Zebra to send a PW status update to LDP daemon
936 */
937int zsend_pw_update(struct zserv *client, struct zebra_pw *pw)
938{
939 struct stream *s = stream_new(ZEBRA_MAX_PACKET_SIZ);
940
941 zclient_create_header(s, ZEBRA_PW_STATUS_UPDATE, pw->vrf_id);
942 stream_write(s, pw->ifname, IF_NAMESIZE);
943 stream_putl(s, pw->ifindex);
944 stream_putl(s, pw->status);
945
946 /* Put length at the first point of the stream. */
947 stream_putw_at(s, 0, stream_get_endp(s));
948
21ccc0cf 949 return zserv_send_message(client, s);
bf094f69
QY		 950}
951
952/* Send response to a get label chunk request to client */
e11d7c96
EDP		 953int zsend_assign_label_chunk_response(struct zserv *client, vrf_id_t vrf_id,
954 uint8_t proto, uint16_t instance,
955 struct label_manager_chunk *lmc)
bf094f69
QY		 956{
957 int ret;
958 struct stream *s = stream_new(ZEBRA_MAX_PACKET_SIZ);
959
960 zclient_create_header(s, ZEBRA_GET_LABEL_CHUNK, vrf_id);
f004f7c3
EDP		 961 /* proto */
962 stream_putc(s, proto);
963 /* instance */
964 stream_putw(s, instance);
bf094f69
QY		 965
966 if (lmc) {
967 /* keep */
968 stream_putc(s, lmc->keep);
969 /* start and end labels */
970 stream_putl(s, lmc->start);
971 stream_putl(s, lmc->end);
972 }
973
974 /* Write packet size. */
975 stream_putw_at(s, 0, stream_get_endp(s));
976
977 ret = writen(client->sock, s->data, stream_get_endp(s));
978 stream_free(s);
979 return ret;
980}
981
982/* Send response to a label manager connect request to client */
e11d7c96
EDP		 983int zsend_label_manager_connect_response(struct zserv *client, vrf_id_t vrf_id,
984 unsigned short result)
bf094f69
QY		 985{
986 int ret;
987 struct stream *s = stream_new(ZEBRA_MAX_PACKET_SIZ);
988
989 zclient_create_header(s, ZEBRA_LABEL_MANAGER_CONNECT, vrf_id);
990
5dffb0e9
FR		 991 /* proto */
992 stream_putc(s, client->proto);
993
994 /* instance */
995 stream_putw(s, client->instance);
996
bf094f69
QY		 997 /* result */
998 stream_putc(s, result);
999
1000 /* Write packet size. */
1001 stream_putw_at(s, 0, stream_get_endp(s));
1002
1003 ret = writen(client->sock, s->data, stream_get_endp(s));
1004 stream_free(s);
1005
1006 return ret;
1007}
1008
1009/* Send response to a get table chunk request to client */
1010static int zsend_assign_table_chunk_response(struct zserv *client,
1011 vrf_id_t vrf_id,
1012 struct table_manager_chunk *tmc)
1013{
1014 struct stream *s = stream_new(ZEBRA_MAX_PACKET_SIZ);
1015
1016 zclient_create_header(s, ZEBRA_GET_TABLE_CHUNK, vrf_id);
1017
1018 if (tmc) {
1019 /* start and end labels */
1020 stream_putl(s, tmc->start);
1021 stream_putl(s, tmc->end);
1022 }
1023
1024 /* Write packet size. */
1025 stream_putw_at(s, 0, stream_get_endp(s));
1026
21ccc0cf 1027 return zserv_send_message(client, s);
bf094f69
QY		 1028}
1029
1030static int zsend_table_manager_connect_response(struct zserv *client,
1031 vrf_id_t vrf_id,
1032 uint16_t result)
1033{
1034 struct stream *s = stream_new(ZEBRA_MAX_PACKET_SIZ);
1035
1036 zclient_create_header(s, ZEBRA_TABLE_MANAGER_CONNECT, vrf_id);
1037
1038 /* result */
1039 stream_putc(s, result);
1040
1041 stream_putw_at(s, 0, stream_get_endp(s));
1042
21ccc0cf 1043 return zserv_send_message(client, s);
bf094f69
QY		 1044}
1045
1046/* Inbound message handling ------------------------------------------------ */
1047
2b64873d 1048const int cmd2type[] = {
bf094f69
QY		 1049 [ZEBRA_NEXTHOP_REGISTER] = RNH_NEXTHOP_TYPE,
1050 [ZEBRA_NEXTHOP_UNREGISTER] = RNH_NEXTHOP_TYPE,
1051 [ZEBRA_IMPORT_ROUTE_REGISTER] = RNH_IMPORT_CHECK_TYPE,
1052 [ZEBRA_IMPORT_ROUTE_UNREGISTER] = RNH_IMPORT_CHECK_TYPE,
1053};
1054
1055/* Nexthop register */
1056static void zread_rnh_register(ZAPI_HANDLER_ARGS)
1057{
1058 struct rnh *rnh;
1059 struct stream *s;
1060 struct prefix p;
1061 unsigned short l = 0;
1062 uint8_t flags = 0;
1063 uint16_t type = cmd2type[hdr->command];
1d30d1f4 1064 bool exist;
906b54dd
DS		 1065 bool flag_changed = false;
1066 uint8_t orig_flags;
bf094f69
QY		 1067
1068 if (IS_ZEBRA_DEBUG_NHT)
1069 zlog_debug(
1070 "rnh_register msg from client %s: hdr->length=%d, type=%s vrf=%u\n",
1071 zebra_route_string(client->proto), hdr->length,
1072 (type == RNH_NEXTHOP_TYPE) ? "nexthop" : "route",
1073 zvrf->vrf->vrf_id);
1074
1075 s = msg;
1076
1077 client->nh_reg_time = monotime(NULL);
1078
1079 while (l < hdr->length) {
1080 STREAM_GETC(s, flags);
1081 STREAM_GETW(s, p.family);
1082 STREAM_GETC(s, p.prefixlen);
1083 l += 4;
1084 if (p.family == AF_INET) {
ab5990d8 1085 client->v4_nh_watch_add_cnt++;
bf094f69 1086 if (p.prefixlen > IPV4_MAX_BITLEN) {
9df414fe 1087 zlog_debug(
bf094f69
QY		 1088 "%s: Specified prefix hdr->length %d is too large for a v4 address",
1089 __PRETTY_FUNCTION__, p.prefixlen);
1090 return;
1091 }
1092 STREAM_GET(&p.u.prefix4.s_addr, s, IPV4_MAX_BYTELEN);
1093 l += IPV4_MAX_BYTELEN;
1094 } else if (p.family == AF_INET6) {
ab5990d8 1095 client->v6_nh_watch_add_cnt++;
bf094f69 1096 if (p.prefixlen > IPV6_MAX_BITLEN) {
9df414fe 1097 zlog_debug(
bf094f69
QY		 1098 "%s: Specified prefix hdr->length %d is to large for a v6 address",
1099 __PRETTY_FUNCTION__, p.prefixlen);
1100 return;
1101 }
1102 STREAM_GET(&p.u.prefix6, s, IPV6_MAX_BYTELEN);
1103 l += IPV6_MAX_BYTELEN;
1104 } else {
af4c2728 1105 flog_err(
e914ccbe 1106 EC_ZEBRA_UNKNOWN_FAMILY,
bf094f69
QY		 1107 "rnh_register: Received unknown family type %d\n",
1108 p.family);
1109 return;
1110 }
1d30d1f4
DS		 1111 rnh = zebra_add_rnh(&p, zvrf_id(zvrf), type, &exist);
1112 if (!rnh)
1113 return;
1114
906b54dd 1115 orig_flags = rnh->flags;
bf094f69
QY		 1116 if (type == RNH_NEXTHOP_TYPE) {
1117 if (flags
1118 && !CHECK_FLAG(rnh->flags, ZEBRA_NHT_CONNECTED))
1119 SET_FLAG(rnh->flags, ZEBRA_NHT_CONNECTED);
1120 else if (!flags
1121 && CHECK_FLAG(rnh->flags, ZEBRA_NHT_CONNECTED))
1122 UNSET_FLAG(rnh->flags, ZEBRA_NHT_CONNECTED);
1123 } else if (type == RNH_IMPORT_CHECK_TYPE) {
1124 if (flags
1125 && !CHECK_FLAG(rnh->flags, ZEBRA_NHT_EXACT_MATCH))
1126 SET_FLAG(rnh->flags, ZEBRA_NHT_EXACT_MATCH);
1127 else if (!flags
1128 && CHECK_FLAG(rnh->flags,
1129 ZEBRA_NHT_EXACT_MATCH))
1130 UNSET_FLAG(rnh->flags, ZEBRA_NHT_EXACT_MATCH);
1131 }
1132
906b54dd
DS		 1133 if (orig_flags != rnh->flags)
1134 flag_changed = true;
1135
bf094f69 1136 /* Anything not AF_INET/INET6 has been filtered out above */
906b54dd 1137 if (!exist || flag_changed)
73bf60a0
RW		 1138 zebra_evaluate_rnh(zvrf, family2afi(p.family), 1, type,
1139 &p);
dd25a6b3
DS		 1140
1141 zebra_add_rnh_client(rnh, client, type, zvrf_id(zvrf));
bf094f69
QY		 1142 }
1143
1144stream_failure:
1145 return;
1146}
1147
1148/* Nexthop register */
1149static void zread_rnh_unregister(ZAPI_HANDLER_ARGS)
1150{
1151 struct rnh *rnh;
1152 struct stream *s;
1153 struct prefix p;
1154 unsigned short l = 0;
1155 uint16_t type = cmd2type[hdr->command];
1156
1157 if (IS_ZEBRA_DEBUG_NHT)
1158 zlog_debug(
1159 "rnh_unregister msg from client %s: hdr->length=%d vrf: %u\n",
1160 zebra_route_string(client->proto), hdr->length,
1161 zvrf->vrf->vrf_id);
1162
1163 s = msg;
1164
1165 while (l < hdr->length) {
1166 uint8_t flags;
1167
1168 STREAM_GETC(s, flags);
1169 if (flags != 0)
1170 goto stream_failure;
1171
1172 STREAM_GETW(s, p.family);
1173 STREAM_GETC(s, p.prefixlen);
1174 l += 4;
1175 if (p.family == AF_INET) {
ab5990d8 1176 client->v4_nh_watch_rem_cnt++;
bf094f69 1177 if (p.prefixlen > IPV4_MAX_BITLEN) {
9df414fe 1178 zlog_debug(
bf094f69
QY		 1179 "%s: Specified prefix hdr->length %d is to large for a v4 address",
1180 __PRETTY_FUNCTION__, p.prefixlen);
1181 return;
1182 }
1183 STREAM_GET(&p.u.prefix4.s_addr, s, IPV4_MAX_BYTELEN);
1184 l += IPV4_MAX_BYTELEN;
1185 } else if (p.family == AF_INET6) {
ab5990d8 1186 client->v6_nh_watch_rem_cnt++;
bf094f69 1187 if (p.prefixlen > IPV6_MAX_BITLEN) {
9df414fe 1188 zlog_debug(
bf094f69
QY		 1189 "%s: Specified prefix hdr->length %d is to large for a v6 address",
1190 __PRETTY_FUNCTION__, p.prefixlen);
1191 return;
1192 }
1193 STREAM_GET(&p.u.prefix6, s, IPV6_MAX_BYTELEN);
1194 l += IPV6_MAX_BYTELEN;
1195 } else {
af4c2728 1196 flog_err(
e914ccbe 1197 EC_ZEBRA_UNKNOWN_FAMILY,
bf094f69
QY		 1198 "rnh_register: Received unknown family type %d\n",
1199 p.family);
1200 return;
1201 }
1202 rnh = zebra_lookup_rnh(&p, zvrf_id(zvrf), type);
1203 if (rnh) {
1204 client->nh_dereg_time = monotime(NULL);
1205 zebra_remove_rnh_client(rnh, client, type);
1206 }
1207 }
1208stream_failure:
1209 return;
1210}
1211
1212#define ZEBRA_MIN_FEC_LENGTH 5
1213
1214/* FEC register */
1215static void zread_fec_register(ZAPI_HANDLER_ARGS)
1216{
1217 struct stream *s;
1218 unsigned short l = 0;
1219 struct prefix p;
1220 uint16_t flags;
57592a53 1221 uint32_t label = MPLS_INVALID_LABEL;
bf094f69
QY		 1222 uint32_t label_index = MPLS_INVALID_LABEL_INDEX;
1223
1224 s = msg;
1225 zvrf = vrf_info_lookup(VRF_DEFAULT);
1226 if (!zvrf)
8b1766b1 1227 return;
bf094f69
QY		 1228
1229 /*
1230 * The minimum amount of data that can be sent for one fec
1231 * registration
1232 */
1233 if (hdr->length < ZEBRA_MIN_FEC_LENGTH) {
af4c2728 1234 flog_err(
e914ccbe 1235 EC_ZEBRA_IRDP_LEN_MISMATCH,
bf094f69
QY		 1236 "fec_register: Received a fec register of hdr->length %d, it is of insufficient size to properly decode",
1237 hdr->length);
1238 return;
1239 }
1240
1241 while (l < hdr->length) {
1242 STREAM_GETW(s, flags);
1243 memset(&p, 0, sizeof(p));
1244 STREAM_GETW(s, p.family);
1245 if (p.family != AF_INET && p.family != AF_INET6) {
af4c2728 1246 flog_err(
e914ccbe 1247 EC_ZEBRA_UNKNOWN_FAMILY,
bf094f69
QY		 1248 "fec_register: Received unknown family type %d\n",
1249 p.family);
1250 return;
1251 }
1252 STREAM_GETC(s, p.prefixlen);
1253 if ((p.family == AF_INET && p.prefixlen > IPV4_MAX_BITLEN)
1254 || (p.family == AF_INET6
1255 && p.prefixlen > IPV6_MAX_BITLEN)) {
9df414fe 1256 zlog_debug(
bf094f69
QY		 1257 "%s: Specified prefix hdr->length: %d is to long for %d",
1258 __PRETTY_FUNCTION__, p.prefixlen, p.family);
1259 return;
1260 }
1261 l += 5;
1262 STREAM_GET(&p.u.prefix, s, PSIZE(p.prefixlen));
1263 l += PSIZE(p.prefixlen);
57592a53
AD		 1264 if (flags & ZEBRA_FEC_REGISTER_LABEL) {
1265 STREAM_GETL(s, label);
1266 l += 4;
1267 } else if (flags & ZEBRA_FEC_REGISTER_LABEL_INDEX) {
bf094f69
QY		 1268 STREAM_GETL(s, label_index);
1269 l += 4;
57592a53
AD		 1270 }
1271
1272 zebra_mpls_fec_register(zvrf, &p, label, label_index, client);
bf094f69
QY		 1273 }
1274
1275stream_failure:
1276 return;
1277}
1278
1279/* FEC unregister */
1280static void zread_fec_unregister(ZAPI_HANDLER_ARGS)
1281{
1282 struct stream *s;
1283 unsigned short l = 0;
1284 struct prefix p;
1285 uint16_t flags;
1286
1287 s = msg;
1288 zvrf = vrf_info_lookup(VRF_DEFAULT);
1289 if (!zvrf)
8b1766b1 1290 return;
bf094f69
QY		 1291
1292 /*
1293 * The minimum amount of data that can be sent for one
1294 * fec unregistration
1295 */
1296 if (hdr->length < ZEBRA_MIN_FEC_LENGTH) {
af4c2728 1297 flog_err(
e914ccbe 1298 EC_ZEBRA_IRDP_LEN_MISMATCH,
bf094f69
QY		 1299 "fec_unregister: Received a fec unregister of hdr->length %d, it is of insufficient size to properly decode",
1300 hdr->length);
1301 return;
1302 }
1303
1304 while (l < hdr->length) {
1305 STREAM_GETW(s, flags);
1306 if (flags != 0)
1307 goto stream_failure;
1308
1309 memset(&p, 0, sizeof(p));
1310 STREAM_GETW(s, p.family);
1311 if (p.family != AF_INET && p.family != AF_INET6) {
af4c2728 1312 flog_err(
e914ccbe 1313 EC_ZEBRA_UNKNOWN_FAMILY,
bf094f69
QY		 1314 "fec_unregister: Received unknown family type %d\n",
1315 p.family);
1316 return;
1317 }
1318 STREAM_GETC(s, p.prefixlen);
1319 if ((p.family == AF_INET && p.prefixlen > IPV4_MAX_BITLEN)
1320 || (p.family == AF_INET6
1321 && p.prefixlen > IPV6_MAX_BITLEN)) {
9df414fe 1322 zlog_debug(
bf094f69
QY		 1323 "%s: Received prefix hdr->length %d which is greater than %d can support",
1324 __PRETTY_FUNCTION__, p.prefixlen, p.family);
1325 return;
1326 }
1327 l += 5;
1328 STREAM_GET(&p.u.prefix, s, PSIZE(p.prefixlen));
1329 l += PSIZE(p.prefixlen);
1330 zebra_mpls_fec_unregister(zvrf, &p, client);
1331 }
1332
1333stream_failure:
1334 return;
1335}
1336
1337
1338/*
1339 * Register zebra server interface information.
1340 * Send current all interface and address information.
1341 */
1342static void zread_interface_add(ZAPI_HANDLER_ARGS)
1343{
1344 struct vrf *vrf;
1345 struct interface *ifp;
1346
bf094f69
QY		 1347 RB_FOREACH (vrf, vrf_id_head, &vrfs_by_id) {
1348 FOR_ALL_INTERFACES (vrf, ifp) {
1349 /* Skip pseudo interface. */
1350 if (!CHECK_FLAG(ifp->status, ZEBRA_INTERFACE_ACTIVE))
1351 continue;
1352
1353 zsend_interface_add(client, ifp);
27ecbea3 1354 zsend_interface_link_params(client, ifp);
bf094f69
QY		 1355 zsend_interface_addresses(client, ifp);
1356 }
1357 }
1358}
1359
1360/* Unregister zebra server interface information. */
1361static void zread_interface_delete(ZAPI_HANDLER_ARGS)
1362{
bf094f69
QY		 1363}
1364
c3bd894e
QY		 1365/*
1366 * Handle message requesting interface be set up or down.
1367 */
1368static void zread_interface_set_protodown(ZAPI_HANDLER_ARGS)
1369{
1370 ifindex_t ifindex;
1371 struct interface *ifp;
1372 char down;
1373
1374 STREAM_GETL(msg, ifindex);
1375 STREAM_GETC(msg, down);
1376
1377 /* set ifdown */
1378 ifp = if_lookup_by_index_per_ns(zebra_ns_lookup(NS_DEFAULT), ifindex);
c3bd894e 1379
65dc7dd3
QY		 1380 if (ifp) {
1381 zlog_info("Setting interface %s (%u): protodown %s", ifp->name,
1382 ifindex, down ? "on" : "off");
1383 zebra_if_set_protodown(ifp, down);
1384 } else {
1385 zlog_warn(
1386 "Cannot set protodown %s for interface %u; does not exist",
1387 down ? "on" : "off", ifindex);
1388 }
1389
c3bd894e
QY		 1390
1391stream_failure:
1392 return;
1393}
1394
1395
bf094f69
QY		 1396void zserv_nexthop_num_warn(const char *caller, const struct prefix *p,
1397 const unsigned int nexthop_num)
1398{
b3f2b590 1399 if (nexthop_num > zrouter.multipath_num) {
bf094f69 1400 char buff[PREFIX2STR_BUFFER];
8b1766b1 1401
bf094f69 1402 prefix2str(p, buff, sizeof(buff));
9df414fe 1403 flog_warn(
e914ccbe 1404 EC_ZEBRA_MORE_NH_THAN_MULTIPATH,
bf094f69 1405 "%s: Prefix %s has %d nexthops, but we can only use the first %d",
b3f2b590 1406 caller, buff, nexthop_num, zrouter.multipath_num);
bf094f69
QY		 1407 }
1408}
1409
1410static void zread_route_add(ZAPI_HANDLER_ARGS)
1411{
1412 struct stream *s;
1413 struct zapi_route api;
1414 struct zapi_nexthop *api_nh;
1415 afi_t afi;
1416 struct prefix_ipv6 *src_p = NULL;
1417 struct route_entry *re;
1418 struct nexthop *nexthop = NULL;
0eb97b86 1419 struct nexthop_group *ng = NULL;
bf094f69 1420 int i, ret;
946de1b9 1421 vrf_id_t vrf_id;
bf094f69 1422 struct ipaddr vtep_ip;
54bea4e5 1423 struct interface *ifp;
bf094f69
QY		 1424
1425 s = msg;
1426 if (zapi_route_decode(s, &api) < 0) {
1427 if (IS_ZEBRA_DEBUG_RECV)
1428 zlog_debug("%s: Unable to decode zapi_route sent",
1429 __PRETTY_FUNCTION__);
1430 return;
1431 }
1432
1433 if (IS_ZEBRA_DEBUG_RECV) {
1434 char buf_prefix[PREFIX_STRLEN];
8b1766b1 1435
bf094f69 1436 prefix2str(&api.prefix, buf_prefix, sizeof(buf_prefix));
68a02e06
MS		 1437 zlog_debug("%s: p=%s, flags=0x%x",
1438 __func__, buf_prefix, api.flags);
bf094f69
QY		 1439 }
1440
1441 /* Allocate new route. */
1442 vrf_id = zvrf_id(zvrf);
1443 re = XCALLOC(MTYPE_RE, sizeof(struct route_entry));
1444 re->type = api.type;
1445 re->instance = api.instance;
1446 re->flags = api.flags;
98572489 1447 re->uptime = monotime(NULL);
bf094f69 1448 re->vrf_id = vrf_id;
6b468511 1449
60ca3cc2 1450 if (api.tableid)
bf094f69
QY		 1451 re->table = api.tableid;
1452 else
1453 re->table = zvrf->table_id;
1454
7fcb24bb
RW		 1455 if (!CHECK_FLAG(api.message, ZAPI_MESSAGE_NEXTHOP)
1456 || api.nexthop_num == 0) {
7fcb24bb 1457 flog_warn(EC_ZEBRA_RX_ROUTE_NO_NEXTHOPS,
8ba70c4e
DS		 1458 "%s: received a route without nexthops for prefix %pFX from client %s",
1459 __func__, &api.prefix,
1460 zebra_route_string(client->proto));
6b468511 1461
7fcb24bb
RW		 1462 XFREE(MTYPE_RE, re);
1463 return;
1464 }
1465
0eb97b86
MS		 1466 /* Use temporary list of nexthops */
1467 ng = nexthop_group_new();
1468
bf094f69
QY		 1469 /*
1470 * TBD should _all_ of the nexthop add operations use
1471 * api_nh->vrf_id instead of re->vrf_id ? I only changed
1472 * for cases NEXTHOP_TYPE_IPV4 and NEXTHOP_TYPE_IPV6.
1473 */
7fcb24bb
RW		 1474 for (i = 0; i < api.nexthop_num; i++) {
1475 api_nh = &api.nexthops[i];
1476 ifindex_t ifindex = 0;
1477
1478 if (IS_ZEBRA_DEBUG_RECV)
1479 zlog_debug("nh type %d", api_nh->type);
1480
1481 switch (api_nh->type) {
1482 case NEXTHOP_TYPE_IFINDEX:
0eb97b86
MS		 1483 nexthop = nexthop_from_ifindex(api_nh->ifindex,
1484 api_nh->vrf_id);
7fcb24bb
RW		 1485 break;
1486 case NEXTHOP_TYPE_IPV4:
1487 if (IS_ZEBRA_DEBUG_RECV) {
1488 char nhbuf[INET6_ADDRSTRLEN] = {0};
1489
1490 inet_ntop(AF_INET, &api_nh->gate.ipv4, nhbuf,
1491 INET6_ADDRSTRLEN);
1492 zlog_debug("%s: nh=%s, vrf_id=%d", __func__,
1493 nhbuf, api_nh->vrf_id);
1494 }
0eb97b86
MS		 1495 nexthop = nexthop_from_ipv4(&api_nh->gate.ipv4,
1496 NULL, api_nh->vrf_id);
7fcb24bb
RW		 1497 break;
1498 case NEXTHOP_TYPE_IPV4_IFINDEX:
1499
1500 memset(&vtep_ip, 0, sizeof(struct ipaddr));
e1e71450 1501 ifindex = api_nh->ifindex;
7fcb24bb
RW		 1502 if (IS_ZEBRA_DEBUG_RECV) {
1503 char nhbuf[INET6_ADDRSTRLEN] = {0};
1504
1505 inet_ntop(AF_INET, &api_nh->gate.ipv4, nhbuf,
1506 INET6_ADDRSTRLEN);
1507 zlog_debug(
1508 "%s: nh=%s, vrf_id=%d (re->vrf_id=%d), ifindex=%d",
1509 __func__, nhbuf, api_nh->vrf_id,
1510 re->vrf_id, ifindex);
bf094f69 1511 }
0eb97b86
MS		 1512 nexthop = nexthop_from_ipv4_ifindex(
1513 &api_nh->gate.ipv4, NULL, ifindex,
7fcb24bb
RW		 1514 api_nh->vrf_id);
1515
54bea4e5
DS		 1516 ifp = if_lookup_by_index(ifindex, api_nh->vrf_id);
1517 if (ifp && connected_is_unnumbered(ifp))
1518 SET_FLAG(nexthop->flags, NEXTHOP_FLAG_ONLINK);
2b83602b 1519 /* Special handling for IPv4 routes sourced from EVPN:
1520 * the nexthop and associated MAC need to be installed.
7fcb24bb
RW		 1521 */
1522 if (CHECK_FLAG(api.flags, ZEBRA_FLAG_EVPN_ROUTE)) {
7fcb24bb
RW		 1523 vtep_ip.ipa_type = IPADDR_V4;
1524 memcpy(&(vtep_ip.ipaddr_v4),
1525 &(api_nh->gate.ipv4),
1526 sizeof(struct in_addr));
1527 zebra_vxlan_evpn_vrf_route_add(
744c63be 1528 api_nh->vrf_id, &api_nh->rmac,
1529 &vtep_ip, &api.prefix);
bf094f69 1530 }
7fcb24bb
RW		 1531 break;
1532 case NEXTHOP_TYPE_IPV6:
0eb97b86
MS		 1533 nexthop = nexthop_from_ipv6(&api_nh->gate.ipv6,
1534 api_nh->vrf_id);
7fcb24bb
RW		 1535 break;
1536 case NEXTHOP_TYPE_IPV6_IFINDEX:
1537 memset(&vtep_ip, 0, sizeof(struct ipaddr));
e1e71450 1538 ifindex = api_nh->ifindex;
0eb97b86
MS		 1539 nexthop = nexthop_from_ipv6_ifindex(&api_nh->gate.ipv6,
1540 ifindex,
1541 api_nh->vrf_id);
7fcb24bb 1542
2b83602b 1543 /* Special handling for IPv6 routes sourced from EVPN:
1544 * the nexthop and associated MAC need to be installed.
7fcb24bb
RW		 1545 */
1546 if (CHECK_FLAG(api.flags, ZEBRA_FLAG_EVPN_ROUTE)) {
7fcb24bb
RW		 1547 vtep_ip.ipa_type = IPADDR_V6;
1548 memcpy(&vtep_ip.ipaddr_v6, &(api_nh->gate.ipv6),
1549 sizeof(struct in6_addr));
1550 zebra_vxlan_evpn_vrf_route_add(
744c63be 1551 api_nh->vrf_id, &api_nh->rmac,
1552 &vtep_ip, &api.prefix);
7fcb24bb
RW		 1553 }
1554 break;
1555 case NEXTHOP_TYPE_BLACKHOLE:
0eb97b86 1556 nexthop = nexthop_from_blackhole(api_nh->bh_type);
7fcb24bb 1557 break;
bf094f69 1558 }
bf094f69 1559
7fcb24bb
RW		 1560 if (!nexthop) {
1561 flog_warn(
1562 EC_ZEBRA_NEXTHOP_CREATION_FAILED,
1563 "%s: Nexthops Specified: %d but we failed to properly create one",
1564 __PRETTY_FUNCTION__, api.nexthop_num);
0eb97b86 1565 nexthop_group_delete(&ng);
7fcb24bb
RW		 1566 XFREE(MTYPE_RE, re);
1567 return;
1568 }
0eb97b86 1569
68a02e06 1570 if (CHECK_FLAG(api_nh->flags, ZAPI_NEXTHOP_FLAG_ONLINK))
fe85601c
DS		 1571 SET_FLAG(nexthop->flags, NEXTHOP_FLAG_ONLINK);
1572
bd054c1a
DS		 1573 if (CHECK_FLAG(api_nh->flags, ZAPI_NEXTHOP_FLAG_WEIGHT))
1574 nexthop->weight = api_nh->weight;
1575
7fcb24bb 1576 /* MPLS labels for BGP-LU or Segment Routing */
68a02e06 1577 if (CHECK_FLAG(api_nh->flags, ZAPI_NEXTHOP_FLAG_LABEL)
7fcb24bb
RW		 1578 && api_nh->type != NEXTHOP_TYPE_IFINDEX
1579 && api_nh->type != NEXTHOP_TYPE_BLACKHOLE) {
1580 enum lsp_types_t label_type;
1581
1582 label_type = lsp_type_from_re_type(client->proto);
1583
1584 if (IS_ZEBRA_DEBUG_RECV) {
1585 zlog_debug(
1586 "%s: adding %d labels of type %d (1st=%u)",
1587 __func__, api_nh->label_num, label_type,
1588 api_nh->labels[0]);
1589 }
1590
1591 nexthop_add_labels(nexthop, label_type,
1592 api_nh->label_num,
1593 &api_nh->labels[0]);
1594 }
0eb97b86
MS		 1595
1596 /* Add new nexthop to temporary list */
1597 nexthop_group_add_sorted(ng, nexthop);
7fcb24bb
RW		 1598 }
1599
bf094f69
QY		 1600 if (CHECK_FLAG(api.message, ZAPI_MESSAGE_DISTANCE))
1601 re->distance = api.distance;
1602 if (CHECK_FLAG(api.message, ZAPI_MESSAGE_METRIC))
1603 re->metric = api.metric;
1604 if (CHECK_FLAG(api.message, ZAPI_MESSAGE_TAG))
1605 re->tag = api.tag;
1606 if (CHECK_FLAG(api.message, ZAPI_MESSAGE_MTU))
1607 re->mtu = api.mtu;
1608
1609 afi = family2afi(api.prefix.family);
1610 if (afi != AFI_IP6 && CHECK_FLAG(api.message, ZAPI_MESSAGE_SRCPFX)) {
e914ccbe 1611 flog_warn(EC_ZEBRA_RX_SRCDEST_WRONG_AFI,
9df414fe 1612 "%s: Received SRC Prefix but afi is not v6",
bf094f69 1613 __PRETTY_FUNCTION__);
0eb97b86 1614 nexthop_group_delete(&ng);
bf094f69
QY		 1615 XFREE(MTYPE_RE, re);
1616 return;
1617 }
1618 if (CHECK_FLAG(api.message, ZAPI_MESSAGE_SRCPFX))
1619 src_p = &api.src_prefix;
1620
5e7939a5
DS		 1621 if (api.safi != SAFI_UNICAST && api.safi != SAFI_MULTICAST) {
1622 flog_warn(EC_LIB_ZAPI_MISSMATCH,
1623 "%s: Received safi: %d but we can only accept UNICAST or MULTICAST",
1624 __func__, api.safi);
1625 nexthop_group_delete(&ng);
1626 XFREE(MTYPE_RE, re);
1627 return;
1628 }
0eb97b86 1629 ret = rib_add_multipath(afi, api.safi, &api.prefix, src_p, re, ng);
bf094f69
QY		 1630
1631 /* Stats */
1632 switch (api.prefix.family) {
1633 case AF_INET:
1634 if (ret > 0)
1635 client->v4_route_add_cnt++;
1636 else if (ret < 0)
1637 client->v4_route_upd8_cnt++;
1638 break;
1639 case AF_INET6:
1640 if (ret > 0)
1641 client->v6_route_add_cnt++;
1642 else if (ret < 0)
1643 client->v6_route_upd8_cnt++;
1644 break;
1645 }
1646}
1647
1648static void zread_route_del(ZAPI_HANDLER_ARGS)
1649{
1650 struct stream *s;
1651 struct zapi_route api;
1652 afi_t afi;
1653 struct prefix_ipv6 *src_p = NULL;
1654 uint32_t table_id;
1655
1656 s = msg;
1657 if (zapi_route_decode(s, &api) < 0)
1658 return;
1659
1660 afi = family2afi(api.prefix.family);
1661 if (afi != AFI_IP6 && CHECK_FLAG(api.message, ZAPI_MESSAGE_SRCPFX)) {
e914ccbe 1662 flog_warn(EC_ZEBRA_RX_SRCDEST_WRONG_AFI,
9df414fe 1663 "%s: Received a src prefix while afi is not v6",
bf094f69
QY		 1664 __PRETTY_FUNCTION__);
1665 return;
1666 }
1667 if (CHECK_FLAG(api.message, ZAPI_MESSAGE_SRCPFX))
1668 src_p = &api.src_prefix;
1669
60ca3cc2 1670 if (api.tableid)
bf094f69
QY		 1671 table_id = api.tableid;
1672 else
1673 table_id = zvrf->table_id;
1674
1675 rib_delete(afi, api.safi, zvrf_id(zvrf), api.type, api.instance,
bc541126 1676 api.flags, &api.prefix, src_p, NULL, 0, table_id, api.metric,
40ecd8e4 1677 api.distance, false);
bf094f69
QY		 1678
1679 /* Stats */
1680 switch (api.prefix.family) {
1681 case AF_INET:
1682 client->v4_route_del_cnt++;
1683 break;
1684 case AF_INET6:
1685 client->v6_route_del_cnt++;
1686 break;
1687 }
1688}
1689
bf094f69
QY		 1690/* MRIB Nexthop lookup for IPv4. */
1691static void zread_ipv4_nexthop_lookup_mrib(ZAPI_HANDLER_ARGS)
1692{
1693 struct in_addr addr;
1694 struct route_entry *re;
1695
1696 STREAM_GET(&addr.s_addr, msg, IPV4_MAX_BYTELEN);
1697 re = rib_match_ipv4_multicast(zvrf_id(zvrf), addr, NULL);
1698 zsend_ipv4_nexthop_lookup_mrib(client, addr, re, zvrf);
1699
1700stream_failure:
1701 return;
1702}
1703
bf094f69
QY		 1704/* Register zebra server router-id information. Send current router-id */
1705static void zread_router_id_add(ZAPI_HANDLER_ARGS)
1706{
1707 struct prefix p;
1708
1709 /* Router-id information is needed. */
1710 vrf_bitmap_set(client->ridinfo, zvrf_id(zvrf));
1711
1712 router_id_get(&p, zvrf_id(zvrf));
1713
1714 zsend_router_id_update(client, &p, zvrf_id(zvrf));
1715}
1716
1717/* Unregister zebra server router-id information. */
1718static void zread_router_id_delete(ZAPI_HANDLER_ARGS)
1719{
1720 vrf_bitmap_unset(client->ridinfo, zvrf_id(zvrf));
1721}
1722
1723static void zsend_capabilities(struct zserv *client, struct zebra_vrf *zvrf)
1724{
1725 struct stream *s = stream_new(ZEBRA_MAX_PACKET_SIZ);
1726
1727 zclient_create_header(s, ZEBRA_CAPABILITIES, zvrf->vrf->vrf_id);
bb6b7f79 1728 stream_putl(s, vrf_get_backend());
bf094f69 1729 stream_putc(s, mpls_enabled);
b3f2b590 1730 stream_putl(s, zrouter.multipath_num);
02c0866d 1731 stream_putc(s, zebra_mlag_get_role());
bf094f69
QY		 1732
1733 stream_putw_at(s, 0, stream_get_endp(s));
21ccc0cf 1734 zserv_send_message(client, s);
bf094f69
QY		 1735}
1736
b120fe3b
DS		 1737void zsend_capabilities_all_clients(void)
1738{
1739 struct listnode *node, *nnode;
1740 struct zebra_vrf *zvrf;
1741 struct zserv *client;
1742
1743 zvrf = vrf_info_lookup(VRF_DEFAULT);
1744 for (ALL_LIST_ELEMENTS(zrouter.client_list, node, nnode, client)) {
1745 zsend_capabilities(client, zvrf);
1746 }
1747}
1748
bf094f69
QY		 1749/* Tie up route-type and client->sock */
1750static void zread_hello(ZAPI_HANDLER_ARGS)
1751{
1752 /* type of protocol (lib/zebra.h) */
1753 uint8_t proto;
1754 unsigned short instance;
1755 uint8_t notify;
1756
1757 STREAM_GETC(msg, proto);
1758 STREAM_GETW(msg, instance);
1759 STREAM_GETC(msg, notify);
1760 if (notify)
1761 client->notify_owner = true;
1762
1763 /* accept only dynamic routing protocols */
f23cbcda 1764 if ((proto < ZEBRA_ROUTE_MAX) && (proto > ZEBRA_ROUTE_CONNECT)) {
bf094f69
QY		 1765 zlog_notice(
1766 "client %d says hello and bids fair to announce only %s routes vrf=%u",
1767 client->sock, zebra_route_string(proto),
1768 zvrf->vrf->vrf_id);
1769 if (instance)
1770 zlog_notice("client protocol instance %d", instance);
1771
1772 client->proto = proto;
1773 client->instance = instance;
1774 }
1775
1776 zsend_capabilities(client, zvrf);
bb6b7f79 1777 zebra_vrf_update_all(client);
bf094f69
QY		 1778stream_failure:
1779 return;
1780}
1781
1782/* Unregister all information in a VRF. */
1783static void zread_vrf_unregister(ZAPI_HANDLER_ARGS)
1784{
1785 int i;
1786 afi_t afi;
1787
49db7a7b 1788 for (afi = AFI_IP; afi < AFI_MAX; afi++) {
bf094f69
QY		 1789 for (i = 0; i < ZEBRA_ROUTE_MAX; i++)
1790 vrf_bitmap_unset(client->redist[afi][i], zvrf_id(zvrf));
49db7a7b
RW		 1791 vrf_bitmap_unset(client->redist_default[afi], zvrf_id(zvrf));
1792 }
bf094f69
QY		 1793 vrf_bitmap_unset(client->ridinfo, zvrf_id(zvrf));
1794}
1795
ea6b290b
RW		 1796/*
1797 * Handle request to create an MPLS LSP.
1798 *
1799 * A single message can fully specify an LSP with multiple nexthops.
1800 *
1801 * When the optional ZAPI_LABELS_FTN flag is set, the specified FEC (route) is
1802 * updated to use the received label(s).
1803 */
1804static void zread_mpls_labels_add(ZAPI_HANDLER_ARGS)
bf094f69
QY		 1805{
1806 struct stream *s;
bad6b0e7 1807 struct zapi_labels zl;
bf094f69
QY		 1808
1809 /* Get input stream. */
1810 s = msg;
bad6b0e7
RW		 1811 if (zapi_labels_decode(s, &zl) < 0) {
1812 if (IS_ZEBRA_DEBUG_RECV)
1813 zlog_debug("%s: Unable to decode zapi_labels sent",
1814 __PRETTY_FUNCTION__);
bf094f69
QY		 1815 return;
1816 }
bf094f69 1817
bf094f69
QY		 1818 if (!mpls_enabled)
1819 return;
1820
ea6b290b
RW		 1821 for (int i = 0; i < zl.nexthop_num; i++) {
1822 struct zapi_nexthop_label *znh;
1823
1824 znh = &zl.nexthops[i];
5065db0a 1825 mpls_lsp_install(zvrf, zl.type, zl.local_label, 1, &znh->label,
ea6b290b
RW		 1826 znh->type, &znh->address, znh->ifindex);
1827
b3c49d0e
RW		 1828 if (CHECK_FLAG(zl.message, ZAPI_LABELS_FTN))
1829 mpls_ftn_update(1, zvrf, zl.type, &zl.route.prefix,
ea6b290b
RW		 1830 znh->type, &znh->address, znh->ifindex,
1831 zl.route.type, zl.route.instance,
1832 znh->label);
1833 }
1834}
1835
1836/*
1837 * Handle request to delete an MPLS LSP.
1838 *
1839 * An LSP is identified by its type and local label. When the received message
1840 * doesn't contain any nexthop, the whole LSP is deleted. Otherwise, only the
1841 * listed LSP nexthops (aka NHLFEs) are deleted.
1842 *
1843 * When the optional ZAPI_LABELS_FTN flag is set, the labels of the specified
1844 * FEC (route) nexthops are deleted.
1845 */
1846static void zread_mpls_labels_delete(ZAPI_HANDLER_ARGS)
1847{
1848 struct stream *s;
1849 struct zapi_labels zl;
1850
1851 /* Get input stream. */
1852 s = msg;
1853 if (zapi_labels_decode(s, &zl) < 0) {
1854 if (IS_ZEBRA_DEBUG_RECV)
1855 zlog_debug("%s: Unable to decode zapi_labels sent",
1856 __PRETTY_FUNCTION__);
1857 return;
1858 }
1859
1860 if (!mpls_enabled)
1861 return;
1862
1863 if (zl.nexthop_num > 0) {
1864 for (int i = 0; i < zl.nexthop_num; i++) {
1865 struct zapi_nexthop_label *znh;
1866
1867 znh = &zl.nexthops[i];
1868 mpls_lsp_uninstall(zvrf, zl.type, zl.local_label,
1869 znh->type, &znh->address,
1870 znh->ifindex);
1871
1872 if (CHECK_FLAG(zl.message, ZAPI_LABELS_FTN))
1873 mpls_ftn_update(0, zvrf, zl.type,
1874 &zl.route.prefix, znh->type,
1875 &znh->address, znh->ifindex,
1876 zl.route.type,
1877 zl.route.instance, znh->label);
1878 }
1879 } else {
1880 mpls_lsp_uninstall_all_vrf(zvrf, zl.type, zl.local_label);
1881
b3c49d0e 1882 if (CHECK_FLAG(zl.message, ZAPI_LABELS_FTN))
ea6b290b
RW		 1883 mpls_ftn_uninstall(zvrf, zl.type, &zl.route.prefix,
1884 zl.route.type, zl.route.instance);
1885 }
1886}
1887
1888/*
1889 * Handle request to add an MPLS LSP or change an existing one.
1890 *
1891 * A single message can fully specify an LSP with multiple nexthops.
1892 *
1893 * When the optional ZAPI_LABELS_FTN flag is set, the specified FEC (route) is
1894 * updated to use the received label(s).
1895 *
1896 * NOTE: zebra will use route replace semantics (make-before-break) to update
1897 * the LSP in the forwarding plane if that's supported by the underlying
1898 * platform.
1899 */
1900static void zread_mpls_labels_replace(ZAPI_HANDLER_ARGS)
1901{
1902 struct stream *s;
1903 struct zapi_labels zl;
1904
1905 /* Get input stream. */
1906 s = msg;
1907 if (zapi_labels_decode(s, &zl) < 0) {
1908 if (IS_ZEBRA_DEBUG_RECV)
1909 zlog_debug("%s: Unable to decode zapi_labels sent",
1910 __PRETTY_FUNCTION__);
1911 return;
1912 }
1913
1914 if (!mpls_enabled)
1915 return;
1916
1917 mpls_lsp_uninstall_all_vrf(zvrf, zl.type, zl.local_label);
1918 if (CHECK_FLAG(zl.message, ZAPI_LABELS_FTN))
1919 mpls_ftn_uninstall(zvrf, zl.type, &zl.route.prefix,
1920 zl.route.type, zl.route.instance);
1921
1922 for (int i = 0; i < zl.nexthop_num; i++) {
1923 struct zapi_nexthop_label *znh;
1924
1925 znh = &zl.nexthops[i];
5065db0a 1926 mpls_lsp_install(zvrf, zl.type, zl.local_label, 1, &znh->label,
ea6b290b
RW		 1927 znh->type, &znh->address, znh->ifindex);
1928
1929 if (CHECK_FLAG(zl.message, ZAPI_LABELS_FTN)) {
1930 mpls_ftn_update(1, zvrf, zl.type, &zl.route.prefix,
1931 znh->type, &znh->address, znh->ifindex,
1932 zl.route.type, zl.route.instance,
1933 znh->label);
1934 }
bf094f69 1935 }
bf094f69
QY		 1936}
1937
1938/* Send response to a table manager connect request to client */
1939static void zread_table_manager_connect(struct zserv *client,
1940 struct stream *msg, vrf_id_t vrf_id)
1941{
1942 struct stream *s;
1943 uint8_t proto;
1944 uint16_t instance;
1945
1946 s = msg;
1947
1948 /* Get data. */
1949 STREAM_GETC(s, proto);
1950 STREAM_GETW(s, instance);
1951
1952 /* accept only dynamic routing protocols */
1953 if ((proto >= ZEBRA_ROUTE_MAX) || (proto <= ZEBRA_ROUTE_STATIC)) {
e914ccbe 1954 flog_err(EC_ZEBRA_TM_WRONG_PROTO,
1c50c1c0
QY		 1955 "client %d has wrong protocol %s", client->sock,
1956 zebra_route_string(proto));
bf094f69
QY		 1957 zsend_table_manager_connect_response(client, vrf_id, 1);
1958 return;
1959 }
1960 zlog_notice("client %d with vrf %u instance %u connected as %s",
1961 client->sock, vrf_id, instance, zebra_route_string(proto));
1962 client->proto = proto;
1963 client->instance = instance;
1964
1965 /*
1966 * Release previous labels of same protocol and instance.
1967 * This is done in case it restarted from an unexpected shutdown.
1968 */
453844ab 1969 release_daemon_table_chunks(client);
bf094f69
QY		 1970
1971 zsend_table_manager_connect_response(client, vrf_id, 0);
1972
1973stream_failure:
1974 return;
1975}
1976
1977static void zread_label_manager_connect(struct zserv *client,
1978 struct stream *msg, vrf_id_t vrf_id)
1979{
1980 struct stream *s;
1981 /* type of protocol (lib/zebra.h) */
1982 uint8_t proto;
1983 unsigned short instance;
1984
1985 /* Get input stream. */
1986 s = msg;
1987
1988 /* Get data. */
1989 STREAM_GETC(s, proto);
1990 STREAM_GETW(s, instance);
1991
1992 /* accept only dynamic routing protocols */
1993 if ((proto >= ZEBRA_ROUTE_MAX) || (proto <= ZEBRA_ROUTE_STATIC)) {
e914ccbe 1994 flog_err(EC_ZEBRA_TM_WRONG_PROTO,
1c50c1c0
QY		 1995 "client %d has wrong protocol %s", client->sock,
1996 zebra_route_string(proto));
e11d7c96 1997 zsend_label_manager_connect_response(client, vrf_id, 1);
bf094f69
QY		 1998 return;
1999 }
e11d7c96
EDP		 2000
2001 /* recall proto and instance in this socket */
bf094f69
QY		 2002 client->proto = proto;
2003 client->instance = instance;
2004
e11d7c96
EDP		 2005 /* call hook for connection using wrapper */
2006 lm_client_connect_call(proto, instance, vrf_id);
bf094f69
QY		 2007
2008stream_failure:
2009 return;
2010}
2011
2012static void zread_get_label_chunk(struct zserv *client, struct stream *msg,
2013 vrf_id_t vrf_id)
2014{
2015 struct stream *s;
2016 uint8_t keep;
0e3b6a92 2017 uint32_t size, base;
e11d7c96 2018 struct label_manager_chunk *lmc = NULL;
5dffb0e9
FR		 2019 uint8_t proto;
2020 unsigned short instance;
bf094f69
QY		 2021
2022 /* Get input stream. */
2023 s = msg;
2024
2025 /* Get data. */
5dffb0e9
FR		 2026 STREAM_GETC(s, proto);
2027 STREAM_GETW(s, instance);
bf094f69
QY		 2028 STREAM_GETC(s, keep);
2029 STREAM_GETL(s, size);
0e3b6a92 2030 STREAM_GETL(s, base);
bf094f69 2031
e11d7c96
EDP		 2032 /* call hook to get a chunk using wrapper */
2033 lm_get_chunk_call(&lmc, proto, instance, keep, size, base, vrf_id);
bf094f69 2034
bf094f69 2035 if (!lmc)
af4c2728 2036 flog_err(
e914ccbe 2037 EC_ZEBRA_LM_CANNOT_ASSIGN_CHUNK,
0313523d 2038 "Unable to assign Label Chunk of size %u to %s instance %u",
f533be73 2039 size, zebra_route_string(proto), instance);
bf094f69 2040 else
8f86bb06
DS		 2041 if (IS_ZEBRA_DEBUG_PACKET)
2042 zlog_debug("Assigned Label Chunk %u - %u to %s instance %u",
2043 lmc->start, lmc->end,
2044 zebra_route_string(proto), instance);
bf094f69
QY		 2045
2046stream_failure:
2047 return;
2048}
2049
2050static void zread_release_label_chunk(struct zserv *client, struct stream *msg)
2051{
2052 struct stream *s;
2053 uint32_t start, end;
5dffb0e9
FR		 2054 uint8_t proto;
2055 unsigned short instance;
bf094f69
QY		 2056
2057 /* Get input stream. */
2058 s = msg;
2059
2060 /* Get data. */
5dffb0e9
FR		 2061 STREAM_GETC(s, proto);
2062 STREAM_GETW(s, instance);
bf094f69
QY		 2063 STREAM_GETL(s, start);
2064 STREAM_GETL(s, end);
2065
e11d7c96
EDP		 2066 /* call hook to release a chunk using wrapper */
2067 lm_release_chunk_call(proto, instance, start, end);
bf094f69
QY		 2068
2069stream_failure:
2070 return;
2071}
e11d7c96 2072
bf094f69
QY		 2073static void zread_label_manager_request(ZAPI_HANDLER_ARGS)
2074{
e11d7c96
EDP		 2075 if (hdr->command == ZEBRA_LABEL_MANAGER_CONNECT
2076 || hdr->command == ZEBRA_LABEL_MANAGER_CONNECT_ASYNC)
2077 zread_label_manager_connect(client, msg, zvrf_id(zvrf));
bf094f69 2078 else {
e11d7c96
EDP		 2079 if (hdr->command == ZEBRA_GET_LABEL_CHUNK)
2080 zread_get_label_chunk(client, msg, zvrf_id(zvrf));
2081 else if (hdr->command == ZEBRA_RELEASE_LABEL_CHUNK)
2082 zread_release_label_chunk(client, msg);
bf094f69
QY		 2083 }
2084}
2085
2086static void zread_get_table_chunk(struct zserv *client, struct stream *msg,
2087 vrf_id_t vrf_id)
2088{
2089 struct stream *s;
2090 uint32_t size;
2091 struct table_manager_chunk *tmc;
2092
2093 /* Get input stream. */
2094 s = msg;
2095
2096 /* Get data. */
2097 STREAM_GETL(s, size);
2098
2099 tmc = assign_table_chunk(client->proto, client->instance, size);
2100 if (!tmc)
e914ccbe 2101 flog_err(EC_ZEBRA_TM_CANNOT_ASSIGN_CHUNK,
1c50c1c0
QY		 2102 "%s: Unable to assign Table Chunk of size %u",
2103 __func__, size);
bf094f69
QY		 2104 else
2105 zlog_debug("Assigned Table Chunk %u - %u", tmc->start,
2106 tmc->end);
2107 /* send response back */
2108 zsend_assign_table_chunk_response(client, vrf_id, tmc);
2109
2110stream_failure:
2111 return;
2112}
2113
2114static void zread_release_table_chunk(struct zserv *client, struct stream *msg)
2115{
2116 struct stream *s;
2117 uint32_t start, end;
2118
2119 /* Get input stream. */
2120 s = msg;
2121
2122 /* Get data. */
2123 STREAM_GETL(s, start);
2124 STREAM_GETL(s, end);
2125
2126 release_table_chunk(client->proto, client->instance, start, end);
2127
2128stream_failure:
2129 return;
2130}
2131
2132static void zread_table_manager_request(ZAPI_HANDLER_ARGS)
2133{
2134 /* to avoid sending other messages like ZERBA_INTERFACE_UP */
2135 if (hdr->command == ZEBRA_TABLE_MANAGER_CONNECT)
2136 zread_table_manager_connect(client, msg, zvrf_id(zvrf));
2137 else {
2138 /* Sanity: don't allow 'unidentified' requests */
2139 if (!client->proto) {
af4c2728 2140 flog_err(
e914ccbe 2141 EC_ZEBRA_TM_ALIENS,
bf094f69
QY		 2142 "Got table request from an unidentified client");
2143 return;
2144 }
2145 if (hdr->command == ZEBRA_GET_TABLE_CHUNK)
2146 zread_get_table_chunk(client, msg, zvrf_id(zvrf));
2147 else if (hdr->command == ZEBRA_RELEASE_TABLE_CHUNK)
2148 zread_release_table_chunk(client, msg);
2149 }
2150}
2151
2152static void zread_pseudowire(ZAPI_HANDLER_ARGS)
2153{
2154 struct stream *s;
2155 char ifname[IF_NAMESIZE];
2156 ifindex_t ifindex;
2157 int type;
2158 int af;
2159 union g_addr nexthop;
2160 uint32_t local_label;
2161 uint32_t remote_label;
2162 uint8_t flags;
2163 union pw_protocol_fields data;
2164 uint8_t protocol;
2165 struct zebra_pw *pw;
2166
2167 /* Get input stream. */
2168 s = msg;
2169
2170 /* Get data. */
2171 STREAM_GET(ifname, s, IF_NAMESIZE);
f223b3d1 2172 ifname[IF_NAMESIZE - 1] = '\0';
bf094f69
QY		 2173 STREAM_GETL(s, ifindex);
2174 STREAM_GETL(s, type);
2175 STREAM_GETL(s, af);
2176 switch (af) {
2177 case AF_INET:
2178 STREAM_GET(&nexthop.ipv4.s_addr, s, IPV4_MAX_BYTELEN);
2179 break;
2180 case AF_INET6:
2181 STREAM_GET(&nexthop.ipv6, s, 16);
2182 break;
2183 default:
2184 return;
2185 }
2186 STREAM_GETL(s, local_label);
2187 STREAM_GETL(s, remote_label);
2188 STREAM_GETC(s, flags);
2189 STREAM_GET(&data, s, sizeof(data));
2190 protocol = client->proto;
2191
2192 pw = zebra_pw_find(zvrf, ifname);
2193 switch (hdr->command) {
2194 case ZEBRA_PW_ADD:
2195 if (pw) {
e914ccbe 2196 flog_warn(EC_ZEBRA_PSEUDOWIRE_EXISTS,
9df414fe 2197 "%s: pseudowire %s already exists [%s]",
bf094f69
QY		 2198 __func__, ifname,
2199 zserv_command_string(hdr->command));
2200 return;
2201 }
2202
2203 zebra_pw_add(zvrf, ifname, protocol, client);
2204 break;
2205 case ZEBRA_PW_DELETE:
2206 if (!pw) {
e914ccbe 2207 flog_warn(EC_ZEBRA_PSEUDOWIRE_NONEXISTENT,
9df414fe 2208 "%s: pseudowire %s not found [%s]", __func__,
bf094f69
QY		 2209 ifname, zserv_command_string(hdr->command));
2210 return;
2211 }
2212
2213 zebra_pw_del(zvrf, pw);
2214 break;
2215 case ZEBRA_PW_SET:
2216 case ZEBRA_PW_UNSET:
2217 if (!pw) {
e914ccbe 2218 flog_warn(EC_ZEBRA_PSEUDOWIRE_NONEXISTENT,
9df414fe 2219 "%s: pseudowire %s not found [%s]", __func__,
bf094f69
QY		 2220 ifname, zserv_command_string(hdr->command));
2221 return;
2222 }
2223
2224 switch (hdr->command) {
2225 case ZEBRA_PW_SET:
2226 pw->enabled = 1;
2227 break;
2228 case ZEBRA_PW_UNSET:
2229 pw->enabled = 0;
2230 break;
2231 }
2232
2233 zebra_pw_change(pw, ifindex, type, af, &nexthop, local_label,
2234 remote_label, flags, &data);
2235 break;
2236 }
2237
2238stream_failure:
2239 return;
2240}
2241
2242static void zread_interface_set_master(ZAPI_HANDLER_ARGS)
2243{
2244 struct interface *master;
2245 struct interface *slave;
2246 struct stream *s = msg;
2247 int ifindex;
2248 vrf_id_t vrf_id;
2249
2250 STREAM_GETL(s, vrf_id);
2251 STREAM_GETL(s, ifindex);
2252 master = if_lookup_by_index(ifindex, vrf_id);
2253
2254 STREAM_GETL(s, vrf_id);
2255 STREAM_GETL(s, ifindex);
2256 slave = if_lookup_by_index(ifindex, vrf_id);
2257
2258 if (!master || !slave)
2259 return;
2260
2261 kernel_interface_set_master(master, slave);
2262
2263stream_failure:
2264 return;
2265}
2266
2267
2268static void zread_vrf_label(ZAPI_HANDLER_ARGS)
2269{
2270 struct interface *ifp;
2271 mpls_label_t nlabel;
2272 afi_t afi;
2273 struct stream *s;
2274 struct zebra_vrf *def_zvrf;
2275 enum lsp_types_t ltype;
2276
2277 s = msg;
2278 STREAM_GETL(s, nlabel);
2279 STREAM_GETC(s, afi);
663d3a91
QY		 2280
2281 if (!(IS_VALID_AFI(afi))) {
2282 zlog_warn("Invalid AFI for VRF label: %u", afi);
2283 return;
2284 }
2285
bf094f69
QY		 2286 if (nlabel == zvrf->label[afi]) {
2287 /*
2288 * Nothing to do here move along
2289 */
2290 return;
2291 }
2292
2293 STREAM_GETC(s, ltype);
2294
2295 if (zvrf->vrf->vrf_id != VRF_DEFAULT)
a36898e7 2296 ifp = if_lookup_by_name(zvrf->vrf->name, zvrf->vrf->vrf_id);
bf094f69 2297 else
a36898e7 2298 ifp = if_lookup_by_name("lo", VRF_DEFAULT);
bf094f69
QY		 2299
2300 if (!ifp) {
2301 zlog_debug("Unable to find specified Interface for %s",
2302 zvrf->vrf->name);
2303 return;
2304 }
2305
2306 def_zvrf = zebra_vrf_lookup_by_id(VRF_DEFAULT);
2307
2308 if (zvrf->label[afi] != MPLS_LABEL_NONE) {
2309 afi_t scrubber;
2310 bool really_remove;
2311
2312 really_remove = true;
2313 for (scrubber = AFI_IP; scrubber < AFI_MAX; scrubber++) {
2314 if (scrubber == afi)
2315 continue;
2316
2317 if (zvrf->label[scrubber] == MPLS_LABEL_NONE)
2318 continue;
2319
2320 if (zvrf->label[afi] == zvrf->label[scrubber]) {
2321 really_remove = false;
2322 break;
2323 }
2324 }
2325
2326 if (really_remove)
2327 mpls_lsp_uninstall(def_zvrf, ltype, zvrf->label[afi],
2328 NEXTHOP_TYPE_IFINDEX, NULL,
2329 ifp->ifindex);
2330 }
2331
5065db0a
RW		 2332 if (nlabel != MPLS_LABEL_NONE) {
2333 mpls_label_t out_label = MPLS_LABEL_IMPLICIT_NULL;
2334 mpls_lsp_install(def_zvrf, ltype, nlabel, 1, &out_label,
2335 NEXTHOP_TYPE_IFINDEX, NULL, ifp->ifindex);
2336 }
bf094f69
QY		 2337
2338 zvrf->label[afi] = nlabel;
2339stream_failure:
2340 return;
2341}
2342
2343static inline void zread_rule(ZAPI_HANDLER_ARGS)
2344{
2345 struct zebra_pbr_rule zpr;
2346 struct stream *s;
2347 uint32_t total, i;
bf094f69
QY		 2348
2349 s = msg;
2350 STREAM_GETL(s, total);
2351
2352 for (i = 0; i < total; i++) {
2353 memset(&zpr, 0, sizeof(zpr));
2354
2355 zpr.sock = client->sock;
2356 zpr.rule.vrf_id = hdr->vrf_id;
2357 STREAM_GETL(s, zpr.rule.seq);
2358 STREAM_GETL(s, zpr.rule.priority);
2359 STREAM_GETL(s, zpr.rule.unique);
2360 STREAM_GETC(s, zpr.rule.filter.src_ip.family);
2361 STREAM_GETC(s, zpr.rule.filter.src_ip.prefixlen);
2362 STREAM_GET(&zpr.rule.filter.src_ip.u.prefix, s,
2363 prefix_blen(&zpr.rule.filter.src_ip));
2364 STREAM_GETW(s, zpr.rule.filter.src_port);
2365 STREAM_GETC(s, zpr.rule.filter.dst_ip.family);
2366 STREAM_GETC(s, zpr.rule.filter.dst_ip.prefixlen);
2367 STREAM_GET(&zpr.rule.filter.dst_ip.u.prefix, s,
2368 prefix_blen(&zpr.rule.filter.dst_ip));
2369 STREAM_GETW(s, zpr.rule.filter.dst_port);
2370 STREAM_GETL(s, zpr.rule.filter.fwmark);
2371 STREAM_GETL(s, zpr.rule.action.table);
b77a69bd 2372 STREAM_GETL(s, zpr.rule.ifindex);
bf094f69 2373
b77a69bd 2374 if (zpr.rule.ifindex) {
b19d55d0
SW		 2375 struct interface *ifp;
2376
2377 ifp = if_lookup_by_index_per_ns(zvrf->zns,
2378 zpr.rule.ifindex);
2379 if (!ifp) {
bf094f69 2380 zlog_debug("Failed to lookup ifindex: %u",
b77a69bd 2381 zpr.rule.ifindex);
bf094f69
QY		 2382 return;
2383 }
b19d55d0
SW		 2384
2385 strlcpy(zpr.ifname, ifp->name, sizeof(zpr.ifname));
bf094f69
QY		 2386 }
2387
2388 if (!is_default_prefix(&zpr.rule.filter.src_ip))
2389 zpr.rule.filter.filter_bm |= PBR_FILTER_SRC_IP;
2390
2391 if (!is_default_prefix(&zpr.rule.filter.dst_ip))
2392 zpr.rule.filter.filter_bm |= PBR_FILTER_DST_IP;
2393
2394 if (zpr.rule.filter.src_port)
2395 zpr.rule.filter.filter_bm |= PBR_FILTER_SRC_PORT;
2396
2397 if (zpr.rule.filter.dst_port)
2398 zpr.rule.filter.filter_bm |= PBR_FILTER_DST_PORT;
2399
2400 if (zpr.rule.filter.fwmark)
2401 zpr.rule.filter.filter_bm |= PBR_FILTER_FWMARK;
2402
4719fd76
QY		 2403 if (!(zpr.rule.filter.src_ip.family == AF_INET
2404 || zpr.rule.filter.src_ip.family == AF_INET6)) {
cc815be7
QY		 2405 zlog_warn(
2406 "Unsupported PBR source IP family: %s (%" PRIu8
2407 ")\n",
2408 family2str(zpr.rule.filter.src_ip.family),
2409 zpr.rule.filter.src_ip.family);
4719fd76
QY		 2410 return;
2411 }
2412 if (!(zpr.rule.filter.dst_ip.family == AF_INET
2413 || zpr.rule.filter.dst_ip.family == AF_INET6)) {
cc815be7
QY		 2414 zlog_warn("Unsupported PBR IP family: %s (%" PRIu8
2415 ")\n",
2416 family2str(zpr.rule.filter.dst_ip.family),
2417 zpr.rule.filter.dst_ip.family);
4719fd76
QY		 2418 return;
2419 }
2420
2421
7f0ea8a4 2422 zpr.vrf_id = zvrf->vrf->vrf_id;
bf094f69 2423 if (hdr->command == ZEBRA_RULE_ADD)
7f0ea8a4 2424 zebra_pbr_add_rule(&zpr);
bf094f69 2425 else
7f0ea8a4 2426 zebra_pbr_del_rule(&zpr);
bf094f69
QY		 2427 }
2428
2429stream_failure:
2430 return;
2431}
2432
2433static inline void zread_ipset(ZAPI_HANDLER_ARGS)
2434{
2435 struct zebra_pbr_ipset zpi;
2436 struct stream *s;
2437 uint32_t total, i;
2438
2439 s = msg;
2440 STREAM_GETL(s, total);
2441
2442 for (i = 0; i < total; i++) {
2443 memset(&zpi, 0, sizeof(zpi));
2444
2445 zpi.sock = client->sock;
be2028d1 2446 zpi.vrf_id = zvrf->vrf->vrf_id;
bf094f69
QY		 2447 STREAM_GETL(s, zpi.unique);
2448 STREAM_GETL(s, zpi.type);
2449 STREAM_GET(&zpi.ipset_name, s, ZEBRA_IPSET_NAME_SIZE);
2450
2451 if (hdr->command == ZEBRA_IPSET_CREATE)
62f20a52 2452 zebra_pbr_create_ipset(&zpi);
bf094f69 2453 else
62f20a52 2454 zebra_pbr_destroy_ipset(&zpi);
bf094f69
QY		 2455 }
2456
2457stream_failure:
2458 return;
2459}
2460
2461static inline void zread_ipset_entry(ZAPI_HANDLER_ARGS)
2462{
2463 struct zebra_pbr_ipset_entry zpi;
2464 struct zebra_pbr_ipset ipset;
2465 struct stream *s;
2466 uint32_t total, i;
2467
2468 s = msg;
2469 STREAM_GETL(s, total);
2470
2471 for (i = 0; i < total; i++) {
2472 memset(&zpi, 0, sizeof(zpi));
2473 memset(&ipset, 0, sizeof(ipset));
2474
2475 zpi.sock = client->sock;
2476 STREAM_GETL(s, zpi.unique);
2477 STREAM_GET(&ipset.ipset_name, s, ZEBRA_IPSET_NAME_SIZE);
261462c3 2478 ipset.ipset_name[ZEBRA_IPSET_NAME_SIZE - 1] = '\0';
bf094f69
QY		 2479 STREAM_GETC(s, zpi.src.family);
2480 STREAM_GETC(s, zpi.src.prefixlen);
2481 STREAM_GET(&zpi.src.u.prefix, s, prefix_blen(&zpi.src));
2482 STREAM_GETC(s, zpi.dst.family);
2483 STREAM_GETC(s, zpi.dst.prefixlen);
2484 STREAM_GET(&zpi.dst.u.prefix, s, prefix_blen(&zpi.dst));
2485
25d760c5
PG		 2486 STREAM_GETW(s, zpi.src_port_min);
2487 STREAM_GETW(s, zpi.src_port_max);
2488 STREAM_GETW(s, zpi.dst_port_min);
2489 STREAM_GETW(s, zpi.dst_port_max);
2490 STREAM_GETC(s, zpi.proto);
bf094f69
QY		 2491 if (!is_default_prefix(&zpi.src))
2492 zpi.filter_bm |= PBR_FILTER_SRC_IP;
2493
2494 if (!is_default_prefix(&zpi.dst))
2495 zpi.filter_bm |= PBR_FILTER_DST_IP;
be729dd7 2496 if (zpi.dst_port_min != 0 || zpi.proto == IPPROTO_ICMP)
25d760c5 2497 zpi.filter_bm |= PBR_FILTER_DST_PORT;
be729dd7 2498 if (zpi.src_port_min != 0 || zpi.proto == IPPROTO_ICMP)
25d760c5
PG		 2499 zpi.filter_bm |= PBR_FILTER_SRC_PORT;
2500 if (zpi.dst_port_max != 0)
2501 zpi.filter_bm |= PBR_FILTER_DST_PORT_RANGE;
2502 if (zpi.src_port_max != 0)
2503 zpi.filter_bm |= PBR_FILTER_SRC_PORT_RANGE;
2504 if (zpi.proto != 0)
2505 zpi.filter_bm |= PBR_FILTER_PROTO;
bf094f69
QY		 2506
2507 /* calculate backpointer */
62f20a52
DS		 2508 zpi.backpointer =
2509 zebra_pbr_lookup_ipset_pername(ipset.ipset_name);
f096bae4
DS		 2510
2511 if (!zpi.backpointer) {
2512 zlog_warn("ipset name specified: %s does not exist",
2513 ipset.ipset_name);
2514 goto stream_failure;
2515 }
2516
bf094f69 2517 if (hdr->command == ZEBRA_IPSET_ENTRY_ADD)
62f20a52 2518 zebra_pbr_add_ipset_entry(&zpi);
bf094f69 2519 else
62f20a52 2520 zebra_pbr_del_ipset_entry(&zpi);
bf094f69
QY		 2521 }
2522
2523stream_failure:
2524 return;
2525}
2526
2527static inline void zread_iptable(ZAPI_HANDLER_ARGS)
2528{
8b5c4dce
QY		 2529 struct zebra_pbr_iptable *zpi =
2530 XCALLOC(MTYPE_TMP, sizeof(struct zebra_pbr_iptable));
bf094f69
QY		 2531 struct stream *s;
2532
2533 s = msg;
2534
8b5c4dce
QY		 2535 zpi->interface_name_list = list_new();
2536 zpi->sock = client->sock;
2537 zpi->vrf_id = zvrf->vrf->vrf_id;
2538 STREAM_GETL(s, zpi->unique);
2539 STREAM_GETL(s, zpi->type);
2540 STREAM_GETL(s, zpi->filter_bm);
2541 STREAM_GETL(s, zpi->action);
2542 STREAM_GETL(s, zpi->fwmark);
2543 STREAM_GET(&zpi->ipset_name, s, ZEBRA_IPSET_NAME_SIZE);
2544 STREAM_GETW(s, zpi->pkt_len_min);
2545 STREAM_GETW(s, zpi->pkt_len_max);
2546 STREAM_GETW(s, zpi->tcp_flags);
2547 STREAM_GETW(s, zpi->tcp_mask_flags);
2548 STREAM_GETC(s, zpi->dscp_value);
2549 STREAM_GETC(s, zpi->fragment);
2550 STREAM_GETC(s, zpi->protocol);
2551 STREAM_GETL(s, zpi->nb_interface);
2552 zebra_pbr_iptable_update_interfacelist(s, zpi);
bf094f69
QY		 2553
2554 if (hdr->command == ZEBRA_IPTABLE_ADD)
8b5c4dce 2555 zebra_pbr_add_iptable(zpi);
bf094f69 2556 else
8b5c4dce
QY		 2557 zebra_pbr_del_iptable(zpi);
2558
bf094f69 2559stream_failure:
8b5c4dce
QY		 2560 zebra_pbr_iptable_free(zpi);
2561 zpi = NULL;
bf094f69
QY		 2562 return;
2563}
2564
9ab0b2a3
SW		 2565static void zsend_error_msg(struct zserv *client, enum zebra_error_types error,
2566 struct zmsghdr *bad_hdr)
2567{
2568
2569 struct stream *s = stream_new(ZEBRA_MAX_PACKET_SIZ);
2570
2571 zclient_create_header(s, ZEBRA_ERROR, bad_hdr->vrf_id);
2572
2573 zserv_encode_error(s, error);
2574
2575 client->error_cnt++;
2576 zserv_send_message(client, s);
2577}
2578
2579static void zserv_error_no_vrf(ZAPI_HANDLER_ARGS)
2580{
2581 if (IS_ZEBRA_DEBUG_PACKET && IS_ZEBRA_DEBUG_RECV)
2582 zlog_debug("ZAPI message specifies unknown VRF: %d",
2583 hdr->vrf_id);
2584
2585 return zsend_error_msg(client, ZEBRA_NO_VRF, hdr);
2586}
2587
2588static void zserv_error_invalid_msg_type(ZAPI_HANDLER_ARGS)
2589{
2590 zlog_info("Zebra received unknown command %d", hdr->command);
2591
2592 return zsend_error_msg(client, ZEBRA_INVALID_MSG_TYPE, hdr);
2593}
2594
2b64873d 2595void (*const zserv_handlers[])(ZAPI_HANDLER_ARGS) = {
bf094f69
QY		 2596 [ZEBRA_ROUTER_ID_ADD] = zread_router_id_add,
2597 [ZEBRA_ROUTER_ID_DELETE] = zread_router_id_delete,
2598 [ZEBRA_INTERFACE_ADD] = zread_interface_add,
2599 [ZEBRA_INTERFACE_DELETE] = zread_interface_delete,
c3bd894e 2600 [ZEBRA_INTERFACE_SET_PROTODOWN] = zread_interface_set_protodown,
bf094f69
QY		 2601 [ZEBRA_ROUTE_ADD] = zread_route_add,
2602 [ZEBRA_ROUTE_DELETE] = zread_route_del,
bf094f69
QY		 2603 [ZEBRA_REDISTRIBUTE_ADD] = zebra_redistribute_add,
2604 [ZEBRA_REDISTRIBUTE_DELETE] = zebra_redistribute_delete,
2605 [ZEBRA_REDISTRIBUTE_DEFAULT_ADD] = zebra_redistribute_default_add,
2606 [ZEBRA_REDISTRIBUTE_DEFAULT_DELETE] = zebra_redistribute_default_delete,
2607 [ZEBRA_IPV4_NEXTHOP_LOOKUP_MRIB] = zread_ipv4_nexthop_lookup_mrib,
2608 [ZEBRA_HELLO] = zread_hello,
2609 [ZEBRA_NEXTHOP_REGISTER] = zread_rnh_register,
2610 [ZEBRA_NEXTHOP_UNREGISTER] = zread_rnh_unregister,
2611 [ZEBRA_IMPORT_ROUTE_REGISTER] = zread_rnh_register,
2612 [ZEBRA_IMPORT_ROUTE_UNREGISTER] = zread_rnh_unregister,
2613 [ZEBRA_BFD_DEST_UPDATE] = zebra_ptm_bfd_dst_register,
2614 [ZEBRA_BFD_DEST_REGISTER] = zebra_ptm_bfd_dst_register,
2615 [ZEBRA_BFD_DEST_DEREGISTER] = zebra_ptm_bfd_dst_deregister,
d3af6147
RZ		 2616#if HAVE_BFDD > 0
2617 [ZEBRA_BFD_DEST_REPLAY] = zebra_ptm_bfd_dst_replay,
2618#endif /* HAVE_BFDD */
bf094f69
QY		 2619 [ZEBRA_VRF_UNREGISTER] = zread_vrf_unregister,
2620 [ZEBRA_VRF_LABEL] = zread_vrf_label,
2621 [ZEBRA_BFD_CLIENT_REGISTER] = zebra_ptm_bfd_client_register,
2622#if defined(HAVE_RTADV)
2623 [ZEBRA_INTERFACE_ENABLE_RADV] = zebra_interface_radv_enable,
2624 [ZEBRA_INTERFACE_DISABLE_RADV] = zebra_interface_radv_disable,
2625#else
2626 [ZEBRA_INTERFACE_ENABLE_RADV] = NULL,
2627 [ZEBRA_INTERFACE_DISABLE_RADV] = NULL,
2628#endif
ea6b290b
RW		 2629 [ZEBRA_MPLS_LABELS_ADD] = zread_mpls_labels_add,
2630 [ZEBRA_MPLS_LABELS_DELETE] = zread_mpls_labels_delete,
2631 [ZEBRA_MPLS_LABELS_REPLACE] = zread_mpls_labels_replace,
bf094f69
QY		 2632 [ZEBRA_IPMR_ROUTE_STATS] = zebra_ipmr_route_stats,
2633 [ZEBRA_LABEL_MANAGER_CONNECT] = zread_label_manager_request,
f533be73 2634 [ZEBRA_LABEL_MANAGER_CONNECT_ASYNC] = zread_label_manager_request,
bf094f69
QY		 2635 [ZEBRA_GET_LABEL_CHUNK] = zread_label_manager_request,
2636 [ZEBRA_RELEASE_LABEL_CHUNK] = zread_label_manager_request,
2637 [ZEBRA_FEC_REGISTER] = zread_fec_register,
2638 [ZEBRA_FEC_UNREGISTER] = zread_fec_unregister,
2639 [ZEBRA_ADVERTISE_DEFAULT_GW] = zebra_vxlan_advertise_gw_macip,
278e26de 2640 [ZEBRA_ADVERTISE_SVI_MACIP] = zebra_vxlan_advertise_svi_macip,
bf094f69
QY		 2641 [ZEBRA_ADVERTISE_SUBNET] = zebra_vxlan_advertise_subnet,
2642 [ZEBRA_ADVERTISE_ALL_VNI] = zebra_vxlan_advertise_all_vni,
2643 [ZEBRA_REMOTE_VTEP_ADD] = zebra_vxlan_remote_vtep_add,
2644 [ZEBRA_REMOTE_VTEP_DEL] = zebra_vxlan_remote_vtep_del,
2645 [ZEBRA_REMOTE_MACIP_ADD] = zebra_vxlan_remote_macip_add,
2646 [ZEBRA_REMOTE_MACIP_DEL] = zebra_vxlan_remote_macip_del,
3950b52c 2647 [ZEBRA_DUPLICATE_ADDR_DETECTION] = zebra_vxlan_dup_addr_detection,
bf094f69
QY		 2648 [ZEBRA_INTERFACE_SET_MASTER] = zread_interface_set_master,
2649 [ZEBRA_PW_ADD] = zread_pseudowire,
2650 [ZEBRA_PW_DELETE] = zread_pseudowire,
2651 [ZEBRA_PW_SET] = zread_pseudowire,
2652 [ZEBRA_PW_UNSET] = zread_pseudowire,
2653 [ZEBRA_RULE_ADD] = zread_rule,
2654 [ZEBRA_RULE_DELETE] = zread_rule,
2655 [ZEBRA_TABLE_MANAGER_CONNECT] = zread_table_manager_request,
2656 [ZEBRA_GET_TABLE_CHUNK] = zread_table_manager_request,
2657 [ZEBRA_RELEASE_TABLE_CHUNK] = zread_table_manager_request,
2658 [ZEBRA_IPSET_CREATE] = zread_ipset,
2659 [ZEBRA_IPSET_DESTROY] = zread_ipset,
2660 [ZEBRA_IPSET_ENTRY_ADD] = zread_ipset_entry,
2661 [ZEBRA_IPSET_ENTRY_DELETE] = zread_ipset_entry,
2662 [ZEBRA_IPTABLE_ADD] = zread_iptable,
2663 [ZEBRA_IPTABLE_DELETE] = zread_iptable,
fbac9605 2664 [ZEBRA_VXLAN_FLOOD_CONTROL] = zebra_vxlan_flood_control,
ecbbc3a7 2665 [ZEBRA_VXLAN_SG_REPLAY] = zebra_vxlan_sg_replay,
ee235396
SK		 2666 [ZEBRA_MLAG_CLIENT_REGISTER] = zebra_mlag_client_register,
2667 [ZEBRA_MLAG_CLIENT_UNREGISTER] = zebra_mlag_client_unregister,
2668 [ZEBRA_MLAG_FORWARD_MSG] = zebra_mlag_forward_client_msg,
bf094f69
QY		 2669};
2670
727c9b99
QY		 2671#if defined(HANDLE_ZAPI_FUZZING)
2672extern struct zebra_privs_t zserv_privs;
2673
2674static void zserv_write_incoming(struct stream *orig, uint16_t command)
2675{
2676 char fname[MAXPATHLEN];
2677 struct stream *copy;
2678 int fd = -1;
2679
2680 copy = stream_dup(orig);
2681 stream_set_getp(copy, 0);
2682
3c649c71 2683 snprintf(fname, MAXPATHLEN, "%s/%u", frr_vtydir, command);
6bb30c2c 2684
0cf6db21 2685 frr_with_privs(&zserv_privs) {
6bb30c2c
DL		 2686 fd = open(fname, O_CREAT | O_WRONLY | O_EXCL, 0644);
2687 }
727c9b99
QY		 2688 stream_flush(copy, fd);
2689 close(fd);
727c9b99
QY		 2690 stream_free(copy);
2691}
2692#endif
2693
904e0d88 2694void zserv_handle_commands(struct zserv *client, struct stream *msg)
bf094f69 2695{
904e0d88
QY		 2696 struct zmsghdr hdr;
2697 struct zebra_vrf *zvrf;
2698
aa8cb964
QY		 2699 if (STREAM_READABLE(msg) > ZEBRA_MAX_PACKET_SIZ) {
2700 if (IS_ZEBRA_DEBUG_PACKET && IS_ZEBRA_DEBUG_RECV)
2701 zlog_debug(
2702 "ZAPI message is %zu bytes long but the maximum packet size is %u; dropping",
2703 STREAM_READABLE(msg), ZEBRA_MAX_PACKET_SIZ);
2704 return;
2705 }
2706
904e0d88 2707 zapi_parse_header(msg, &hdr);
bf094f69 2708
49b3b01f
QY		 2709 if (IS_ZEBRA_DEBUG_PACKET && IS_ZEBRA_DEBUG_RECV)
2710 zserv_log_message(NULL, msg, &hdr);
2711
727c9b99
QY		 2712#if defined(HANDLE_ZAPI_FUZZING)
2713 zserv_write_incoming(msg, hdr.command);
2714#endif
2715
904e0d88
QY		 2716 hdr.length -= ZEBRA_HEADER_SIZE;
2717
2718 /* lookup vrf */
2719 zvrf = zebra_vrf_lookup_by_id(hdr.vrf_id);
9ab0b2a3
SW		 2720 if (!zvrf)
2721 return zserv_error_no_vrf(client, &hdr, msg, zvrf);
904e0d88 2722
aa360de7 2723 if (hdr.command >= array_size(zserv_handlers)
904e0d88 2724 || zserv_handlers[hdr.command] == NULL)
9ab0b2a3
SW		 2725 return zserv_error_invalid_msg_type(client, &hdr, msg, zvrf);
2726
2727 zserv_handlers[hdr.command](client, &hdr, msg, zvrf);
bf094f69 2728}
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