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Merge pull request #11058 from opensourcerouting/fix/redhat_debian_logrotate
[mirror_frr.git] / zebra / zapi_msg.c
1 /*
2 * Zebra API message creation & consumption.
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/stream.h"
28 #include "lib/memory.h"
29 #include "lib/table.h"
30 #include "lib/network.h"
31 #include "lib/log.h"
32 #include "lib/zclient.h"
33 #include "lib/privs.h"
34 #include "lib/nexthop.h"
35 #include "lib/vrf.h"
36 #include "lib/libfrr.h"
37 #include "lib/lib_errors.h"
38
39 #include "zebra/zebra_router.h"
40 #include "zebra/rib.h"
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"
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"
52 #include "zebra/zebra_vxlan.h"
53 #include "zebra/zebra_evpn_mh.h"
54 #include "zebra/rt.h"
55 #include "zebra/zebra_pbr.h"
56 #include "zebra/table_manager.h"
57 #include "zebra/zapi_msg.h"
58 #include "zebra/zebra_errors.h"
59 #include "zebra/zebra_mlag.h"
60 #include "zebra/connected.h"
61 #include "zebra/zebra_opaque.h"
62 #include "zebra/zebra_srte.h"
63 #include "zebra/zebra_srv6.h"
64
65 DEFINE_MTYPE_STATIC(ZEBRA, RE_OPAQUE, "Route Opaque Data");
66
67 static int zapi_nhg_decode(struct stream *s, int cmd, struct zapi_nhg *api_nhg);
68
69 /* Encoding helpers -------------------------------------------------------- */
70
71 static void zserv_encode_interface(struct stream *s, struct interface *ifp)
72 {
73 /* Interface information. */
74 struct zebra_if *zif = ifp->info;
75
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);
87 stream_putl(s, zif->link_ifindex);
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
104 static 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
109 memset(&data, 0, sizeof(data));
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
125 static int zserv_encode_nexthop(struct stream *s, struct nexthop *nexthop)
126 {
127 stream_putl(s, nexthop->vrf_id);
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
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 */
163 static 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
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 */
184 int zsend_interface_add(struct zserv *client, struct interface *ifp)
185 {
186 struct stream *s = stream_new(ZEBRA_MAX_PACKET_SIZ);
187
188 zclient_create_header(s, ZEBRA_INTERFACE_ADD, ifp->vrf->vrf_id);
189 zserv_encode_interface(s, ifp);
190
191 client->ifadd_cnt++;
192 return zserv_send_message(client, s);
193 }
194
195 /* Interface deletion from zebra daemon. */
196 int zsend_interface_delete(struct zserv *client, struct interface *ifp)
197 {
198 struct stream *s = stream_new(ZEBRA_MAX_PACKET_SIZ);
199
200 zclient_create_header(s, ZEBRA_INTERFACE_DELETE, ifp->vrf->vrf_id);
201 zserv_encode_interface(s, ifp);
202
203 client->ifdel_cnt++;
204 return zserv_send_message(client, s);
205 }
206
207 int 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++;
215 return zserv_send_message(client, s);
216 }
217
218 /* VRF deletion from zebra daemon. */
219 int 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++;
228 return zserv_send_message(client, s);
229 }
230
231 int zsend_interface_link_params(struct zserv *client, struct interface *ifp)
232 {
233 struct stream *s = stream_new(ZEBRA_MAX_PACKET_SIZ);
234
235 zclient_create_header(s, ZEBRA_INTERFACE_LINK_PARAMS, ifp->vrf->vrf_id);
236
237 /* Add Interface Index */
238 stream_putl(s, ifp->ifindex);
239
240 /* Then TE Link Parameters */
241 if (zebra_interface_link_params_write(s, ifp) == 0) {
242 stream_free(s);
243 return 0;
244 }
245
246 /* Write packet size. */
247 stream_putw_at(s, 0, stream_get_endp(s));
248
249 return zserv_send_message(client, s);
250 }
251
252 /* Interface address is added/deleted. Send ZEBRA_INTERFACE_ADDRESS_ADD or
253 * ZEBRA_INTERFACE_ADDRESS_DELETE to the client.
254 *
255 * A ZEBRA_INTERFACE_ADDRESS_ADD is sent in the following situations:
256 * - in response to a 3-byte ZEBRA_INTERFACE_ADD request
257 * from the client, after the ZEBRA_INTERFACE_ADD has been
258 * sent from zebra to the client
259 * - redistribute new address info to all clients in the following situations
260 * - at startup, when zebra figures out the available interfaces
261 * - when an interface is added (where support for
262 * RTM_IFANNOUNCE or AF_NETLINK sockets is available), or when
263 * an interface is marked IFF_UP (i.e., an RTM_IFINFO message is
264 * received)
265 * - for the vty commands "ip address A.B.C.D/M [<label LINE>]"
266 * and "no bandwidth <1-10000000>", "ipv6 address X:X::X:X/M"
267 * - when an RTM_NEWADDR message is received from the kernel,
268 *
269 * The call tree that triggers ZEBRA_INTERFACE_ADDRESS_DELETE:
270 *
271 * zsend_interface_address(DELETE)
272 * ^
273 * |
274 * zebra_interface_address_delete_update
275 * ^ ^ ^
276 * | | if_delete_update
277 * | |
278 * ip_address_uninstall connected_delete_ipv4
279 * [ipv6_addresss_uninstall] [connected_delete_ipv6]
280 * ^ ^
281 * | |
282 * | RTM_NEWADDR on routing/netlink socket
283 * |
284 * vty commands:
285 * "no ip address A.B.C.D/M [label LINE]"
286 * "no ip address A.B.C.D/M"
287 * ["no ipv6 address X:X::X:X/M"]
288 *
289 */
290 int zsend_interface_address(int cmd, struct zserv *client,
291 struct interface *ifp, struct connected *ifc)
292 {
293 int blen;
294 struct prefix *p;
295 struct stream *s = stream_new(ZEBRA_MAX_PACKET_SIZ);
296
297 zclient_create_header(s, cmd, ifp->vrf->vrf_id);
298 stream_putl(s, ifp->ifindex);
299
300 /* Interface address flag. */
301 stream_putc(s, ifc->flags);
302
303 /* Prefix information. */
304 p = ifc->address;
305 stream_putc(s, p->family);
306 blen = prefix_blen(p);
307 stream_put(s, &p->u.prefix, blen);
308
309 /*
310 * XXX gnu version does not send prefixlen for
311 * ZEBRA_INTERFACE_ADDRESS_DELETE
312 * but zebra_interface_address_delete_read() in the gnu version
313 * expects to find it
314 */
315 stream_putc(s, p->prefixlen);
316
317 /* Destination. */
318 p = ifc->destination;
319 if (p)
320 stream_put(s, &p->u.prefix, blen);
321 else
322 stream_put(s, NULL, blen);
323
324 /* Write packet size. */
325 stream_putw_at(s, 0, stream_get_endp(s));
326
327 client->connected_rt_add_cnt++;
328 return zserv_send_message(client, s);
329 }
330
331 static int zsend_interface_nbr_address(int cmd, struct zserv *client,
332 struct interface *ifp,
333 struct nbr_connected *ifc)
334 {
335 int blen;
336 struct stream *s = stream_new(ZEBRA_MAX_PACKET_SIZ);
337 struct prefix *p;
338
339 zclient_create_header(s, cmd, ifp->vrf->vrf_id);
340 stream_putl(s, ifp->ifindex);
341
342 /* Prefix information. */
343 p = ifc->address;
344 stream_putc(s, p->family);
345 blen = prefix_blen(p);
346 stream_put(s, &p->u.prefix, blen);
347
348 /*
349 * XXX gnu version does not send prefixlen for
350 * ZEBRA_INTERFACE_ADDRESS_DELETE
351 * but zebra_interface_address_delete_read() in the gnu version
352 * expects to find it
353 */
354 stream_putc(s, p->prefixlen);
355
356 /* Write packet size. */
357 stream_putw_at(s, 0, stream_get_endp(s));
358
359 return zserv_send_message(client, s);
360 }
361
362 /* Interface address addition. */
363 static void zebra_interface_nbr_address_add_update(struct interface *ifp,
364 struct nbr_connected *ifc)
365 {
366 struct listnode *node, *nnode;
367 struct zserv *client;
368 struct prefix *p;
369
370 if (IS_ZEBRA_DEBUG_EVENT) {
371 char buf[INET6_ADDRSTRLEN];
372
373 p = ifc->address;
374 zlog_debug(
375 "MESSAGE: ZEBRA_INTERFACE_NBR_ADDRESS_ADD %s/%d on %s",
376 inet_ntop(p->family, &p->u.prefix, buf,
377 INET6_ADDRSTRLEN),
378 p->prefixlen, ifc->ifp->name);
379 }
380
381 for (ALL_LIST_ELEMENTS(zrouter.client_list, node, nnode, client)) {
382 /* Do not send unsolicited messages to synchronous clients. */
383 if (client->synchronous)
384 continue;
385
386 zsend_interface_nbr_address(ZEBRA_INTERFACE_NBR_ADDRESS_ADD,
387 client, ifp, ifc);
388 }
389 }
390
391 /* Interface address deletion. */
392 static 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
410 for (ALL_LIST_ELEMENTS(zrouter.client_list, node, nnode, client)) {
411 /* Do not send unsolicited messages to synchronous clients. */
412 if (client->synchronous)
413 continue;
414
415 zsend_interface_nbr_address(ZEBRA_INTERFACE_NBR_ADDRESS_DELETE,
416 client, ifp, ifc);
417 }
418 }
419
420 /* Send addresses on interface to client */
421 int zsend_interface_addresses(struct zserv *client, struct interface *ifp)
422 {
423 struct listnode *cnode, *cnnode;
424 struct connected *c;
425 struct nbr_connected *nc;
426
427 /* Send interface addresses. */
428 for (ALL_LIST_ELEMENTS(ifp->connected, cnode, cnnode, c)) {
429 if (!CHECK_FLAG(c->conf, ZEBRA_IFC_REAL))
430 continue;
431
432 if (zsend_interface_address(ZEBRA_INTERFACE_ADDRESS_ADD, client,
433 ifp, c)
434 < 0)
435 return -1;
436 }
437
438 /* Send interface neighbors. */
439 for (ALL_LIST_ELEMENTS(ifp->nbr_connected, cnode, cnnode, nc)) {
440 if (zsend_interface_nbr_address(ZEBRA_INTERFACE_NBR_ADDRESS_ADD,
441 client, ifp, nc)
442 < 0)
443 return -1;
444 }
445
446 return 0;
447 }
448
449 /* Notify client about interface moving from one VRF to another.
450 * Whether client is interested in old and new VRF is checked by caller.
451 */
452 int zsend_interface_vrf_update(struct zserv *client, struct interface *ifp,
453 vrf_id_t vrf_id)
454 {
455 struct stream *s = stream_new(ZEBRA_MAX_PACKET_SIZ);
456
457 zclient_create_header(s, ZEBRA_INTERFACE_VRF_UPDATE, ifp->vrf->vrf_id);
458
459 /* Fill in the name of the interface and its new VRF (id) */
460 stream_put(s, ifp->name, INTERFACE_NAMSIZ);
461 stream_putl(s, vrf_id);
462
463 /* Write packet size. */
464 stream_putw_at(s, 0, stream_get_endp(s));
465
466 client->if_vrfchg_cnt++;
467 return zserv_send_message(client, s);
468 }
469
470 /* Add new nbr connected IPv6 address */
471 void nbr_connected_add_ipv6(struct interface *ifp, struct in6_addr *address)
472 {
473 struct nbr_connected *ifc;
474 struct prefix p;
475
476 p.family = AF_INET6;
477 IPV6_ADDR_COPY(&p.u.prefix6, address);
478 p.prefixlen = IPV6_MAX_BITLEN;
479
480 ifc = listnode_head(ifp->nbr_connected);
481 if (!ifc) {
482 /* new addition */
483 ifc = nbr_connected_new();
484 ifc->address = prefix_new();
485 ifc->ifp = ifp;
486 listnode_add(ifp->nbr_connected, ifc);
487 }
488
489 prefix_copy(ifc->address, &p);
490
491 zebra_interface_nbr_address_add_update(ifp, ifc);
492
493 if_nbr_ipv6ll_to_ipv4ll_neigh_update(ifp, address, 1);
494 }
495
496 void nbr_connected_delete_ipv6(struct interface *ifp, struct in6_addr *address)
497 {
498 struct nbr_connected *ifc;
499 struct prefix p;
500
501 p.family = AF_INET6;
502 IPV6_ADDR_COPY(&p.u.prefix6, address);
503 p.prefixlen = IPV6_MAX_BITLEN;
504
505 ifc = nbr_connected_check(ifp, &p);
506 if (!ifc)
507 return;
508
509 listnode_delete(ifp->nbr_connected, ifc);
510
511 zebra_interface_nbr_address_delete_update(ifp, ifc);
512
513 if_nbr_ipv6ll_to_ipv4ll_neigh_update(ifp, address, 0);
514
515 nbr_connected_free(ifc);
516 }
517
518 /*
519 * The cmd passed to zsend_interface_update may be ZEBRA_INTERFACE_UP or
520 * ZEBRA_INTERFACE_DOWN.
521 *
522 * The ZEBRA_INTERFACE_UP message is sent from the zebra server to
523 * the clients in one of 2 situations:
524 * - an if_up is detected e.g., as a result of an RTM_IFINFO message
525 * - a vty command modifying the bandwidth of an interface is received.
526 * The ZEBRA_INTERFACE_DOWN message is sent when an if_down is detected.
527 */
528 int zsend_interface_update(int cmd, struct zserv *client, struct interface *ifp)
529 {
530 struct stream *s = stream_new(ZEBRA_MAX_PACKET_SIZ);
531
532 zclient_create_header(s, cmd, ifp->vrf->vrf_id);
533 zserv_encode_interface(s, ifp);
534
535 if (cmd == ZEBRA_INTERFACE_UP)
536 client->ifup_cnt++;
537 else
538 client->ifdown_cnt++;
539
540 return zserv_send_message(client, s);
541 }
542
543 int zsend_redistribute_route(int cmd, struct zserv *client,
544 const struct route_node *rn,
545 const struct route_entry *re)
546 {
547 struct zapi_route api;
548 struct zapi_nexthop *api_nh;
549 struct nexthop *nexthop;
550 const struct prefix *p, *src_p;
551 uint8_t count = 0;
552 afi_t afi;
553 size_t stream_size =
554 MAX(ZEBRA_MAX_PACKET_SIZ, sizeof(struct zapi_route));
555
556 srcdest_rnode_prefixes(rn, &p, &src_p);
557 memset(&api, 0, sizeof(api));
558 api.vrf_id = re->vrf_id;
559 api.type = re->type;
560 api.safi = SAFI_UNICAST;
561 api.instance = re->instance;
562 api.flags = re->flags;
563
564 afi = family2afi(p->family);
565 switch (afi) {
566 case AFI_IP:
567 if (cmd == ZEBRA_REDISTRIBUTE_ROUTE_ADD)
568 client->redist_v4_add_cnt++;
569 else
570 client->redist_v4_del_cnt++;
571 break;
572 case AFI_IP6:
573 if (cmd == ZEBRA_REDISTRIBUTE_ROUTE_ADD)
574 client->redist_v6_add_cnt++;
575 else
576 client->redist_v6_del_cnt++;
577 break;
578 default:
579 break;
580 }
581
582 /* Prefix. */
583 api.prefix = *p;
584 if (src_p) {
585 SET_FLAG(api.message, ZAPI_MESSAGE_SRCPFX);
586 memcpy(&api.src_prefix, src_p, sizeof(api.src_prefix));
587 }
588
589 for (nexthop = re->nhe->nhg.nexthop;
590 nexthop; nexthop = nexthop->next) {
591 if (!CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE))
592 continue;
593
594 api_nh = &api.nexthops[count];
595 api_nh->vrf_id = nexthop->vrf_id;
596 api_nh->type = nexthop->type;
597 api_nh->weight = nexthop->weight;
598 switch (nexthop->type) {
599 case NEXTHOP_TYPE_BLACKHOLE:
600 api_nh->bh_type = nexthop->bh_type;
601 break;
602 case NEXTHOP_TYPE_IPV4:
603 case NEXTHOP_TYPE_IPV4_IFINDEX:
604 api_nh->gate.ipv4 = nexthop->gate.ipv4;
605 api_nh->ifindex = nexthop->ifindex;
606 break;
607 case NEXTHOP_TYPE_IFINDEX:
608 api_nh->ifindex = nexthop->ifindex;
609 break;
610 case NEXTHOP_TYPE_IPV6:
611 case NEXTHOP_TYPE_IPV6_IFINDEX:
612 api_nh->gate.ipv6 = nexthop->gate.ipv6;
613 api_nh->ifindex = nexthop->ifindex;
614 }
615 count++;
616 }
617
618 /* Nexthops. */
619 if (count) {
620 SET_FLAG(api.message, ZAPI_MESSAGE_NEXTHOP);
621 api.nexthop_num = count;
622 }
623
624 /* Attributes. */
625 SET_FLAG(api.message, ZAPI_MESSAGE_DISTANCE);
626 api.distance = re->distance;
627 SET_FLAG(api.message, ZAPI_MESSAGE_METRIC);
628 api.metric = re->metric;
629 if (re->tag) {
630 SET_FLAG(api.message, ZAPI_MESSAGE_TAG);
631 api.tag = re->tag;
632 }
633 SET_FLAG(api.message, ZAPI_MESSAGE_MTU);
634 api.mtu = re->mtu;
635
636 struct stream *s = stream_new(stream_size);
637
638 /* Encode route and send. */
639 if (zapi_route_encode(cmd, s, &api) < 0) {
640 stream_free(s);
641 return -1;
642 }
643
644 if (IS_ZEBRA_DEBUG_SEND)
645 zlog_debug("%s: %s to client %s: type %s, vrf_id %d, p %pFX",
646 __func__, zserv_command_string(cmd),
647 zebra_route_string(client->proto),
648 zebra_route_string(api.type), api.vrf_id,
649 &api.prefix);
650 return zserv_send_message(client, s);
651 }
652
653 /*
654 * Modified version of zsend_ipv4_nexthop_lookup(): Query unicast rib if
655 * nexthop is not found on mrib. Returns both route metric and protocol
656 * distance.
657 *
658 * *XXX* this ZAPI call is slated to be removed at some point in the future
659 * since MRIB support in PIM is hopelessly broken in its interactions with NHT.
660 * The plan is to make pimd use NHT to receive URIB and MRIB in parallel and
661 * make the decision there, which will obsolete this ZAPI op.
662 * (Otherwise we would need to implement sending NHT updates for the result of
663 * this "URIB-MRIB-combined" table, but we only decide that here on the fly,
664 * so it'd be rather complex to do NHT for.)
665 */
666 static int zsend_nexthop_lookup_mrib(struct zserv *client, struct ipaddr *addr,
667 struct route_entry *re,
668 struct zebra_vrf *zvrf)
669 {
670 struct stream *s;
671 unsigned long nump;
672 uint8_t num;
673 struct nexthop *nexthop;
674
675 /* Get output stream. */
676 s = stream_new(ZEBRA_MAX_PACKET_SIZ);
677 stream_reset(s);
678
679 /* Fill in result. */
680 zclient_create_header(s, ZEBRA_NEXTHOP_LOOKUP_MRIB, zvrf_id(zvrf));
681 stream_put_ipaddr(s, addr);
682
683 if (re) {
684 struct nexthop_group *nhg;
685
686 stream_putc(s, re->distance);
687 stream_putl(s, re->metric);
688 num = 0;
689 /* remember position for nexthop_num */
690 nump = stream_get_endp(s);
691 /* reserve room for nexthop_num */
692 stream_putc(s, 0);
693 nhg = rib_get_fib_nhg(re);
694 for (ALL_NEXTHOPS_PTR(nhg, nexthop)) {
695 if (rnh_nexthop_valid(re, nexthop))
696 num += zserv_encode_nexthop(s, nexthop);
697 }
698
699 /* store nexthop_num */
700 stream_putc_at(s, nump, num);
701 } else {
702 stream_putc(s, 0); /* distance */
703 stream_putl(s, 0); /* metric */
704 stream_putc(s, 0); /* nexthop_num */
705 }
706
707 stream_putw_at(s, 0, stream_get_endp(s));
708
709 return zserv_send_message(client, s);
710 }
711
712 int zsend_nhg_notify(uint16_t type, uint16_t instance, uint32_t session_id,
713 uint32_t id, enum zapi_nhg_notify_owner note)
714 {
715 struct zserv *client;
716 struct stream *s;
717
718 client = zserv_find_client_session(type, instance, session_id);
719 if (!client) {
720 if (IS_ZEBRA_DEBUG_PACKET) {
721 zlog_debug("Not Notifying Owner: %u(%u) about %u(%d)",
722 type, instance, id, note);
723 }
724 return 0;
725 }
726
727 if (IS_ZEBRA_DEBUG_SEND)
728 zlog_debug("%s: type %d, id %d, note %s",
729 __func__, type, id, zapi_nhg_notify_owner2str(note));
730
731 s = stream_new(ZEBRA_MAX_PACKET_SIZ);
732 stream_reset(s);
733
734 zclient_create_header(s, ZEBRA_NHG_NOTIFY_OWNER, VRF_DEFAULT);
735
736 stream_put(s, &note, sizeof(note));
737 stream_putl(s, id);
738
739 stream_putw_at(s, 0, stream_get_endp(s));
740
741 return zserv_send_message(client, s);
742 }
743
744 /*
745 * Common utility send route notification, called from a path using a
746 * route_entry and from a path using a dataplane context.
747 */
748 static int route_notify_internal(const struct route_node *rn, int type,
749 uint16_t instance, vrf_id_t vrf_id,
750 uint32_t table_id,
751 enum zapi_route_notify_owner note, afi_t afi,
752 safi_t safi)
753 {
754 struct zserv *client;
755 struct stream *s;
756 uint8_t blen;
757
758 client = zserv_find_client(type, instance);
759 if (!client || !client->notify_owner) {
760 if (IS_ZEBRA_DEBUG_PACKET)
761 zlog_debug(
762 "Not Notifying Owner: %s about prefix %pRN(%u) %d vrf: %u",
763 zebra_route_string(type), rn, table_id, note,
764 vrf_id);
765 return 0;
766 }
767
768 if (IS_ZEBRA_DEBUG_PACKET)
769 zlog_debug(
770 "Notifying Owner: %s about prefix %pRN(%u) %d vrf: %u",
771 zebra_route_string(type), rn, table_id, note, vrf_id);
772
773 /* We're just allocating a small-ish buffer here, since we only
774 * encode a small amount of data.
775 */
776 s = stream_new(ZEBRA_SMALL_PACKET_SIZE);
777
778 stream_reset(s);
779
780 zclient_create_header(s, ZEBRA_ROUTE_NOTIFY_OWNER, vrf_id);
781
782 stream_put(s, &note, sizeof(note));
783
784 stream_putc(s, rn->p.family);
785
786 blen = prefix_blen(&rn->p);
787 stream_putc(s, rn->p.prefixlen);
788 stream_put(s, &rn->p.u.prefix, blen);
789
790 stream_putl(s, table_id);
791
792 /* Encode AFI, SAFI in the message */
793 stream_putc(s, afi);
794 stream_putc(s, safi);
795
796 stream_putw_at(s, 0, stream_get_endp(s));
797
798 return zserv_send_message(client, s);
799 }
800
801 int zsend_route_notify_owner(const struct route_node *rn,
802 struct route_entry *re,
803 enum zapi_route_notify_owner note, afi_t afi,
804 safi_t safi)
805 {
806 return (route_notify_internal(rn, re->type, re->instance, re->vrf_id,
807 re->table, note, afi, safi));
808 }
809
810 /*
811 * Route-owner notification using info from dataplane update context.
812 */
813 int zsend_route_notify_owner_ctx(const struct zebra_dplane_ctx *ctx,
814 enum zapi_route_notify_owner note)
815 {
816 return (route_notify_internal(
817 rib_find_rn_from_ctx(ctx), dplane_ctx_get_type(ctx),
818 dplane_ctx_get_instance(ctx), dplane_ctx_get_vrf(ctx),
819 dplane_ctx_get_table(ctx), note, dplane_ctx_get_afi(ctx),
820 dplane_ctx_get_safi(ctx)));
821 }
822
823 static void zread_route_notify_request(ZAPI_HANDLER_ARGS)
824 {
825 uint8_t notify;
826
827 STREAM_GETC(msg, notify);
828 client->notify_owner = notify;
829 stream_failure:
830 return;
831 }
832
833 void zsend_rule_notify_owner(const struct zebra_dplane_ctx *ctx,
834 enum zapi_rule_notify_owner note)
835 {
836 struct listnode *node;
837 struct zserv *client;
838 struct stream *s;
839
840 if (IS_ZEBRA_DEBUG_PACKET)
841 zlog_debug("%s: Notifying %u", __func__,
842 dplane_ctx_rule_get_unique(ctx));
843
844 for (ALL_LIST_ELEMENTS_RO(zrouter.client_list, node, client)) {
845 if (dplane_ctx_rule_get_sock(ctx) == client->sock)
846 break;
847 }
848
849 if (!client)
850 return;
851
852 s = stream_new(ZEBRA_MAX_PACKET_SIZ);
853
854 zclient_create_header(s, ZEBRA_RULE_NOTIFY_OWNER, VRF_DEFAULT);
855 stream_put(s, &note, sizeof(note));
856 stream_putl(s, dplane_ctx_rule_get_seq(ctx));
857 stream_putl(s, dplane_ctx_rule_get_priority(ctx));
858 stream_putl(s, dplane_ctx_rule_get_unique(ctx));
859 stream_put(s, dplane_ctx_rule_get_ifname(ctx), INTERFACE_NAMSIZ);
860
861 stream_putw_at(s, 0, stream_get_endp(s));
862
863 zserv_send_message(client, s);
864 }
865
866 void zsend_iptable_notify_owner(const struct zebra_dplane_ctx *ctx,
867 enum zapi_iptable_notify_owner note)
868 {
869 struct listnode *node;
870 struct zserv *client;
871 struct stream *s;
872 struct zebra_pbr_iptable ipt;
873 uint16_t cmd = ZEBRA_IPTABLE_NOTIFY_OWNER;
874 struct zebra_pbr_iptable *ipt_hash;
875 enum dplane_op_e op = dplane_ctx_get_op(ctx);
876
877 dplane_ctx_get_pbr_iptable(ctx, &ipt);
878
879 ipt_hash = hash_lookup(zrouter.iptable_hash, &ipt);
880 if (ipt_hash) {
881 if (op == DPLANE_OP_IPTABLE_ADD &&
882 CHECK_FLAG(ipt_hash->internal_flags,
883 IPTABLE_INSTALL_QUEUED))
884 UNSET_FLAG(ipt_hash->internal_flags,
885 IPTABLE_INSTALL_QUEUED);
886 else if (op == DPLANE_OP_IPTABLE_DELETE &&
887 CHECK_FLAG(ipt_hash->internal_flags,
888 IPTABLE_UNINSTALL_QUEUED))
889 UNSET_FLAG(ipt_hash->internal_flags,
890 IPTABLE_UNINSTALL_QUEUED);
891 }
892 if (IS_ZEBRA_DEBUG_PACKET)
893 zlog_debug("%s: Notifying %s id %u note %u", __func__,
894 zserv_command_string(cmd), ipt.unique, note);
895
896 for (ALL_LIST_ELEMENTS_RO(zrouter.client_list, node, client)) {
897 if (ipt.sock == client->sock)
898 break;
899 }
900
901 if (!client)
902 return;
903
904 s = stream_new(ZEBRA_MAX_PACKET_SIZ);
905
906 zclient_create_header(s, cmd, VRF_DEFAULT);
907 stream_putw(s, note);
908 stream_putl(s, ipt.unique);
909 stream_put(s, ipt.ipset_name, ZEBRA_IPSET_NAME_SIZE);
910 stream_putw_at(s, 0, stream_get_endp(s));
911
912 zserv_send_message(client, s);
913 }
914
915 void zsend_ipset_notify_owner(const struct zebra_dplane_ctx *ctx,
916 enum zapi_ipset_notify_owner note)
917 {
918 struct listnode *node;
919 struct zserv *client;
920 struct stream *s;
921 struct zebra_pbr_ipset ipset;
922 uint16_t cmd = ZEBRA_IPSET_NOTIFY_OWNER;
923
924 dplane_ctx_get_pbr_ipset(ctx, &ipset);
925
926 if (IS_ZEBRA_DEBUG_PACKET)
927 zlog_debug("%s: Notifying %s id %u note %u", __func__,
928 zserv_command_string(cmd), ipset.unique, note);
929
930 for (ALL_LIST_ELEMENTS_RO(zrouter.client_list, node, client)) {
931 if (ipset.sock == client->sock)
932 break;
933 }
934
935 if (!client)
936 return;
937
938 s = stream_new(ZEBRA_MAX_PACKET_SIZ);
939
940 zclient_create_header(s, cmd, VRF_DEFAULT);
941 stream_putw(s, note);
942 stream_putl(s, ipset.unique);
943 stream_put(s, ipset.ipset_name, ZEBRA_IPSET_NAME_SIZE);
944 stream_putw_at(s, 0, stream_get_endp(s));
945
946 zserv_send_message(client, s);
947 }
948
949 void zsend_ipset_entry_notify_owner(const struct zebra_dplane_ctx *ctx,
950 enum zapi_ipset_entry_notify_owner note)
951 {
952 struct listnode *node;
953 struct zserv *client;
954 struct stream *s;
955 struct zebra_pbr_ipset_entry ipent;
956 struct zebra_pbr_ipset ipset;
957 uint16_t cmd = ZEBRA_IPSET_ENTRY_NOTIFY_OWNER;
958
959 dplane_ctx_get_pbr_ipset_entry(ctx, &ipent);
960 dplane_ctx_get_pbr_ipset(ctx, &ipset);
961
962 if (IS_ZEBRA_DEBUG_PACKET)
963 zlog_debug("%s: Notifying %s id %u note %u", __func__,
964 zserv_command_string(cmd), ipent.unique, note);
965
966 for (ALL_LIST_ELEMENTS_RO(zrouter.client_list, node, client)) {
967 if (ipent.sock == client->sock)
968 break;
969 }
970
971 if (!client)
972 return;
973
974 s = stream_new(ZEBRA_MAX_PACKET_SIZ);
975
976 zclient_create_header(s, cmd, VRF_DEFAULT);
977 stream_putw(s, note);
978 stream_putl(s, ipent.unique);
979 stream_put(s, ipset.ipset_name, ZEBRA_IPSET_NAME_SIZE);
980 stream_putw_at(s, 0, stream_get_endp(s));
981
982 zserv_send_message(client, s);
983 }
984
985 void zsend_nhrp_neighbor_notify(int cmd, struct interface *ifp,
986 struct ipaddr *ipaddr, int ndm_state,
987 union sockunion *link_layer_ipv4)
988 {
989 struct stream *s;
990 struct listnode *node, *nnode;
991 struct zserv *client;
992 afi_t afi;
993 union sockunion ip;
994
995 if (IS_ZEBRA_DEBUG_PACKET)
996 zlog_debug("%s: Notifying Neighbor entry (%u)", __func__, cmd);
997
998 sockunion_family(&ip) = ipaddr_family(ipaddr);
999 afi = family2afi(sockunion_family(&ip));
1000 memcpy((char *)sockunion_get_addr(&ip), &ipaddr->ip.addr,
1001 family2addrsize(sockunion_family(&ip)));
1002
1003 for (ALL_LIST_ELEMENTS(zrouter.client_list, node, nnode, client)) {
1004 if (!vrf_bitmap_check(client->nhrp_neighinfo[afi],
1005 ifp->vrf->vrf_id))
1006 continue;
1007
1008 s = stream_new(ZEBRA_MAX_PACKET_SIZ);
1009 zclient_neigh_ip_encode(s, cmd, &ip, link_layer_ipv4, ifp,
1010 ndm_state);
1011 stream_putw_at(s, 0, stream_get_endp(s));
1012 zserv_send_message(client, s);
1013 }
1014 }
1015
1016
1017 /* Router-id is updated. Send ZEBRA_ROUTER_ID_UPDATE to client. */
1018 int zsend_router_id_update(struct zserv *client, afi_t afi, struct prefix *p,
1019 vrf_id_t vrf_id)
1020 {
1021 int blen;
1022 struct stream *s;
1023
1024 /* Check this client need interface information. */
1025 if (!vrf_bitmap_check(client->ridinfo[afi], vrf_id))
1026 return 0;
1027
1028 s = stream_new(ZEBRA_MAX_PACKET_SIZ);
1029
1030 /* Message type. */
1031 zclient_create_header(s, ZEBRA_ROUTER_ID_UPDATE, vrf_id);
1032
1033 /* Prefix information. */
1034 stream_putc(s, p->family);
1035 blen = prefix_blen(p);
1036 stream_put(s, &p->u.prefix, blen);
1037 stream_putc(s, p->prefixlen);
1038
1039 /* Write packet size. */
1040 stream_putw_at(s, 0, stream_get_endp(s));
1041
1042 return zserv_send_message(client, s);
1043 }
1044
1045 /*
1046 * Function used by Zebra to send a PW status update to LDP daemon
1047 */
1048 int zsend_pw_update(struct zserv *client, struct zebra_pw *pw)
1049 {
1050 struct stream *s = stream_new(ZEBRA_MAX_PACKET_SIZ);
1051
1052 zclient_create_header(s, ZEBRA_PW_STATUS_UPDATE, pw->vrf_id);
1053 stream_write(s, pw->ifname, INTERFACE_NAMSIZ);
1054 stream_putl(s, pw->ifindex);
1055 stream_putl(s, pw->status);
1056
1057 /* Put length at the first point of the stream. */
1058 stream_putw_at(s, 0, stream_get_endp(s));
1059
1060 return zserv_send_message(client, s);
1061 }
1062
1063 /* Send response to a get label chunk request to client */
1064 int zsend_assign_label_chunk_response(struct zserv *client, vrf_id_t vrf_id,
1065 struct label_manager_chunk *lmc)
1066 {
1067 struct stream *s = stream_new(ZEBRA_MAX_PACKET_SIZ);
1068
1069 zclient_create_header(s, ZEBRA_GET_LABEL_CHUNK, vrf_id);
1070 /* proto */
1071 stream_putc(s, client->proto);
1072 /* instance */
1073 stream_putw(s, client->instance);
1074
1075 if (lmc) {
1076 /* keep */
1077 stream_putc(s, lmc->keep);
1078 /* start and end labels */
1079 stream_putl(s, lmc->start);
1080 stream_putl(s, lmc->end);
1081 }
1082
1083 /* Write packet size. */
1084 stream_putw_at(s, 0, stream_get_endp(s));
1085
1086 return zserv_send_message(client, s);
1087 }
1088
1089 /* Send response to a label manager connect request to client */
1090 int zsend_label_manager_connect_response(struct zserv *client, vrf_id_t vrf_id,
1091 unsigned short result)
1092 {
1093 struct stream *s = stream_new(ZEBRA_MAX_PACKET_SIZ);
1094
1095 zclient_create_header(s, ZEBRA_LABEL_MANAGER_CONNECT, vrf_id);
1096
1097 /* proto */
1098 stream_putc(s, client->proto);
1099
1100 /* instance */
1101 stream_putw(s, client->instance);
1102
1103 /* result */
1104 stream_putc(s, result);
1105
1106 /* Write packet size. */
1107 stream_putw_at(s, 0, stream_get_endp(s));
1108
1109 return zserv_send_message(client, s);
1110 }
1111
1112 /* Send response to a get table chunk request to client */
1113 static int zsend_assign_table_chunk_response(struct zserv *client,
1114 vrf_id_t vrf_id,
1115 struct table_manager_chunk *tmc)
1116 {
1117 struct stream *s = stream_new(ZEBRA_MAX_PACKET_SIZ);
1118
1119 zclient_create_header(s, ZEBRA_GET_TABLE_CHUNK, vrf_id);
1120
1121 if (tmc) {
1122 /* start and end labels */
1123 stream_putl(s, tmc->start);
1124 stream_putl(s, tmc->end);
1125 }
1126
1127 /* Write packet size. */
1128 stream_putw_at(s, 0, stream_get_endp(s));
1129
1130 return zserv_send_message(client, s);
1131 }
1132
1133 static int zsend_table_manager_connect_response(struct zserv *client,
1134 vrf_id_t vrf_id,
1135 uint16_t result)
1136 {
1137 struct stream *s = stream_new(ZEBRA_MAX_PACKET_SIZ);
1138
1139 zclient_create_header(s, ZEBRA_TABLE_MANAGER_CONNECT, vrf_id);
1140
1141 /* result */
1142 stream_putc(s, result);
1143
1144 stream_putw_at(s, 0, stream_get_endp(s));
1145
1146 return zserv_send_message(client, s);
1147 }
1148
1149 /* SRv6 locator add notification from zebra daemon. */
1150 int zsend_zebra_srv6_locator_add(struct zserv *client, struct srv6_locator *loc)
1151 {
1152 struct stream *s = stream_new(ZEBRA_MAX_PACKET_SIZ);
1153
1154 zclient_create_header(s, ZEBRA_SRV6_LOCATOR_ADD, VRF_DEFAULT);
1155 zapi_srv6_locator_encode(s, loc);
1156 stream_putw_at(s, 0, stream_get_endp(s));
1157
1158 return zserv_send_message(client, s);
1159 }
1160
1161 /* SRv6 locator delete notification from zebra daemon. */
1162 int zsend_zebra_srv6_locator_delete(struct zserv *client,
1163 struct srv6_locator *loc)
1164 {
1165 struct stream *s = stream_new(ZEBRA_MAX_PACKET_SIZ);
1166
1167 zclient_create_header(s, ZEBRA_SRV6_LOCATOR_DELETE, VRF_DEFAULT);
1168 zapi_srv6_locator_encode(s, loc);
1169 stream_putw_at(s, 0, stream_get_endp(s));
1170
1171 return zserv_send_message(client, s);
1172 }
1173
1174 /* Inbound message handling ------------------------------------------------ */
1175
1176 /* Nexthop register */
1177 static void zread_rnh_register(ZAPI_HANDLER_ARGS)
1178 {
1179 struct rnh *rnh;
1180 struct stream *s;
1181 struct prefix p;
1182 unsigned short l = 0;
1183 uint8_t connected = 0;
1184 uint8_t resolve_via_default;
1185 bool exist;
1186 bool flag_changed = false;
1187 uint8_t orig_flags;
1188 safi_t safi;
1189
1190 if (IS_ZEBRA_DEBUG_NHT)
1191 zlog_debug(
1192 "rnh_register msg from client %s: hdr->length=%d vrf=%u",
1193 zebra_route_string(client->proto), hdr->length,
1194 zvrf->vrf->vrf_id);
1195
1196 s = msg;
1197
1198 if (!client->nh_reg_time)
1199 client->nh_reg_time = monotime(NULL);
1200
1201 while (l < hdr->length) {
1202 STREAM_GETC(s, connected);
1203 STREAM_GETC(s, resolve_via_default);
1204 STREAM_GETW(s, safi);
1205 STREAM_GETW(s, p.family);
1206 STREAM_GETC(s, p.prefixlen);
1207 l += 7;
1208 if (p.family == AF_INET) {
1209 client->v4_nh_watch_add_cnt++;
1210 if (p.prefixlen > IPV4_MAX_BITLEN) {
1211 zlog_debug(
1212 "%s: Specified prefix hdr->length %d is too large for a v4 address",
1213 __func__, p.prefixlen);
1214 return;
1215 }
1216 STREAM_GET(&p.u.prefix4.s_addr, s, IPV4_MAX_BYTELEN);
1217 l += IPV4_MAX_BYTELEN;
1218 } else if (p.family == AF_INET6) {
1219 client->v6_nh_watch_add_cnt++;
1220 if (p.prefixlen > IPV6_MAX_BITLEN) {
1221 zlog_debug(
1222 "%s: Specified prefix hdr->length %d is to large for a v6 address",
1223 __func__, p.prefixlen);
1224 return;
1225 }
1226 STREAM_GET(&p.u.prefix6, s, IPV6_MAX_BYTELEN);
1227 l += IPV6_MAX_BYTELEN;
1228 } else {
1229 flog_err(
1230 EC_ZEBRA_UNKNOWN_FAMILY,
1231 "rnh_register: Received unknown family type %d",
1232 p.family);
1233 return;
1234 }
1235 rnh = zebra_add_rnh(&p, zvrf_id(zvrf), safi, &exist);
1236 if (!rnh)
1237 return;
1238
1239 orig_flags = rnh->flags;
1240 if (connected && !CHECK_FLAG(rnh->flags, ZEBRA_NHT_CONNECTED))
1241 SET_FLAG(rnh->flags, ZEBRA_NHT_CONNECTED);
1242 else if (!connected
1243 && CHECK_FLAG(rnh->flags, ZEBRA_NHT_CONNECTED))
1244 UNSET_FLAG(rnh->flags, ZEBRA_NHT_CONNECTED);
1245
1246 if (resolve_via_default)
1247 SET_FLAG(rnh->flags, ZEBRA_NHT_RESOLVE_VIA_DEFAULT);
1248
1249 if (orig_flags != rnh->flags)
1250 flag_changed = true;
1251
1252 /* Anything not AF_INET/INET6 has been filtered out above */
1253 if (!exist || flag_changed)
1254 zebra_evaluate_rnh(zvrf, family2afi(p.family), 1, &p,
1255 safi);
1256
1257 zebra_add_rnh_client(rnh, client, zvrf_id(zvrf));
1258 }
1259
1260 stream_failure:
1261 return;
1262 }
1263
1264 /* Nexthop register */
1265 static void zread_rnh_unregister(ZAPI_HANDLER_ARGS)
1266 {
1267 struct rnh *rnh;
1268 struct stream *s;
1269 struct prefix p;
1270 unsigned short l = 0;
1271 safi_t safi;
1272
1273 if (IS_ZEBRA_DEBUG_NHT)
1274 zlog_debug(
1275 "rnh_unregister msg from client %s: hdr->length=%d vrf: %u",
1276 zebra_route_string(client->proto), hdr->length,
1277 zvrf->vrf->vrf_id);
1278
1279 s = msg;
1280
1281 while (l < hdr->length) {
1282 uint8_t ignore;
1283
1284 STREAM_GETC(s, ignore);
1285 if (ignore != 0)
1286 goto stream_failure;
1287 STREAM_GETC(s, ignore);
1288 if (ignore != 0)
1289 goto stream_failure;
1290
1291 STREAM_GETW(s, safi);
1292 STREAM_GETW(s, p.family);
1293 STREAM_GETC(s, p.prefixlen);
1294 l += 7;
1295 if (p.family == AF_INET) {
1296 client->v4_nh_watch_rem_cnt++;
1297 if (p.prefixlen > IPV4_MAX_BITLEN) {
1298 zlog_debug(
1299 "%s: Specified prefix hdr->length %d is to large for a v4 address",
1300 __func__, p.prefixlen);
1301 return;
1302 }
1303 STREAM_GET(&p.u.prefix4.s_addr, s, IPV4_MAX_BYTELEN);
1304 l += IPV4_MAX_BYTELEN;
1305 } else if (p.family == AF_INET6) {
1306 client->v6_nh_watch_rem_cnt++;
1307 if (p.prefixlen > IPV6_MAX_BITLEN) {
1308 zlog_debug(
1309 "%s: Specified prefix hdr->length %d is to large for a v6 address",
1310 __func__, p.prefixlen);
1311 return;
1312 }
1313 STREAM_GET(&p.u.prefix6, s, IPV6_MAX_BYTELEN);
1314 l += IPV6_MAX_BYTELEN;
1315 } else {
1316 flog_err(
1317 EC_ZEBRA_UNKNOWN_FAMILY,
1318 "rnh_register: Received unknown family type %d",
1319 p.family);
1320 return;
1321 }
1322 rnh = zebra_lookup_rnh(&p, zvrf_id(zvrf), safi);
1323 if (rnh) {
1324 client->nh_dereg_time = monotime(NULL);
1325 zebra_remove_rnh_client(rnh, client);
1326 }
1327 }
1328 stream_failure:
1329 return;
1330 }
1331
1332 #define ZEBRA_MIN_FEC_LENGTH 5
1333
1334 /* FEC register */
1335 static void zread_fec_register(ZAPI_HANDLER_ARGS)
1336 {
1337 struct stream *s;
1338 unsigned short l = 0;
1339 struct prefix p;
1340 uint16_t flags;
1341 uint32_t label = MPLS_INVALID_LABEL;
1342 uint32_t label_index = MPLS_INVALID_LABEL_INDEX;
1343
1344 s = msg;
1345 zvrf = vrf_info_lookup(VRF_DEFAULT);
1346 if (!zvrf)
1347 return;
1348
1349 /*
1350 * The minimum amount of data that can be sent for one fec
1351 * registration
1352 */
1353 if (hdr->length < ZEBRA_MIN_FEC_LENGTH) {
1354 flog_err(
1355 EC_ZEBRA_IRDP_LEN_MISMATCH,
1356 "fec_register: Received a fec register of hdr->length %d, it is of insufficient size to properly decode",
1357 hdr->length);
1358 return;
1359 }
1360
1361 while (l < hdr->length) {
1362 STREAM_GETW(s, flags);
1363 memset(&p, 0, sizeof(p));
1364 STREAM_GETW(s, p.family);
1365 if (p.family != AF_INET && p.family != AF_INET6) {
1366 flog_err(
1367 EC_ZEBRA_UNKNOWN_FAMILY,
1368 "fec_register: Received unknown family type %d",
1369 p.family);
1370 return;
1371 }
1372 STREAM_GETC(s, p.prefixlen);
1373 if ((p.family == AF_INET && p.prefixlen > IPV4_MAX_BITLEN)
1374 || (p.family == AF_INET6
1375 && p.prefixlen > IPV6_MAX_BITLEN)) {
1376 zlog_debug(
1377 "%s: Specified prefix hdr->length: %d is to long for %d",
1378 __func__, p.prefixlen, p.family);
1379 return;
1380 }
1381 l += 5;
1382 STREAM_GET(&p.u.prefix, s, PSIZE(p.prefixlen));
1383 l += PSIZE(p.prefixlen);
1384 if (flags & ZEBRA_FEC_REGISTER_LABEL) {
1385 STREAM_GETL(s, label);
1386 l += 4;
1387 } else if (flags & ZEBRA_FEC_REGISTER_LABEL_INDEX) {
1388 STREAM_GETL(s, label_index);
1389 l += 4;
1390 }
1391
1392 zebra_mpls_fec_register(zvrf, &p, label, label_index, client);
1393 }
1394
1395 stream_failure:
1396 return;
1397 }
1398
1399 /* FEC unregister */
1400 static void zread_fec_unregister(ZAPI_HANDLER_ARGS)
1401 {
1402 struct stream *s;
1403 unsigned short l = 0;
1404 struct prefix p;
1405 uint16_t flags;
1406
1407 s = msg;
1408 zvrf = vrf_info_lookup(VRF_DEFAULT);
1409 if (!zvrf)
1410 return;
1411
1412 /*
1413 * The minimum amount of data that can be sent for one
1414 * fec unregistration
1415 */
1416 if (hdr->length < ZEBRA_MIN_FEC_LENGTH) {
1417 flog_err(
1418 EC_ZEBRA_IRDP_LEN_MISMATCH,
1419 "fec_unregister: Received a fec unregister of hdr->length %d, it is of insufficient size to properly decode",
1420 hdr->length);
1421 return;
1422 }
1423
1424 while (l < hdr->length) {
1425 STREAM_GETW(s, flags);
1426 if (flags != 0)
1427 goto stream_failure;
1428
1429 memset(&p, 0, sizeof(p));
1430 STREAM_GETW(s, p.family);
1431 if (p.family != AF_INET && p.family != AF_INET6) {
1432 flog_err(
1433 EC_ZEBRA_UNKNOWN_FAMILY,
1434 "fec_unregister: Received unknown family type %d",
1435 p.family);
1436 return;
1437 }
1438 STREAM_GETC(s, p.prefixlen);
1439 if ((p.family == AF_INET && p.prefixlen > IPV4_MAX_BITLEN)
1440 || (p.family == AF_INET6
1441 && p.prefixlen > IPV6_MAX_BITLEN)) {
1442 zlog_debug(
1443 "%s: Received prefix hdr->length %d which is greater than %d can support",
1444 __func__, p.prefixlen, p.family);
1445 return;
1446 }
1447 l += 5;
1448 STREAM_GET(&p.u.prefix, s, PSIZE(p.prefixlen));
1449 l += PSIZE(p.prefixlen);
1450 zebra_mpls_fec_unregister(zvrf, &p, client);
1451 }
1452
1453 stream_failure:
1454 return;
1455 }
1456
1457
1458 /*
1459 * Register zebra server interface information.
1460 * Send current all interface and address information.
1461 */
1462 static void zread_interface_add(ZAPI_HANDLER_ARGS)
1463 {
1464 struct vrf *vrf;
1465 struct interface *ifp;
1466
1467 vrf_id_t vrf_id = zvrf_id(zvrf);
1468 if (vrf_id != VRF_DEFAULT && vrf_id != VRF_UNKNOWN) {
1469 FOR_ALL_INTERFACES (zvrf->vrf, ifp) {
1470 /* Skip pseudo interface. */
1471 if (!CHECK_FLAG(ifp->status, ZEBRA_INTERFACE_ACTIVE))
1472 continue;
1473
1474 zsend_interface_add(client, ifp);
1475 zsend_interface_link_params(client, ifp);
1476 zsend_interface_addresses(client, ifp);
1477 }
1478 return;
1479 }
1480
1481 RB_FOREACH (vrf, vrf_id_head, &vrfs_by_id) {
1482 FOR_ALL_INTERFACES (vrf, ifp) {
1483 /* Skip pseudo interface. */
1484 if (!CHECK_FLAG(ifp->status, ZEBRA_INTERFACE_ACTIVE))
1485 continue;
1486
1487 zsend_interface_add(client, ifp);
1488 zsend_interface_link_params(client, ifp);
1489 zsend_interface_addresses(client, ifp);
1490 }
1491 }
1492 }
1493
1494 /* Unregister zebra server interface information. */
1495 static void zread_interface_delete(ZAPI_HANDLER_ARGS)
1496 {
1497 }
1498
1499 /*
1500 * Handle message requesting interface be set up or down.
1501 */
1502 static void zread_interface_set_protodown(ZAPI_HANDLER_ARGS)
1503 {
1504 ifindex_t ifindex;
1505 struct interface *ifp;
1506 char down;
1507 enum protodown_reasons reason;
1508
1509 STREAM_GETL(msg, ifindex);
1510 STREAM_GETC(msg, down);
1511
1512 /* set ifdown */
1513 ifp = if_lookup_by_index_per_ns(zebra_ns_lookup(NS_DEFAULT), ifindex);
1514
1515 if (!ifp) {
1516 zlog_warn(
1517 "Cannot set protodown %s for interface %u; does not exist",
1518 down ? "on" : "off", ifindex);
1519
1520 return;
1521 }
1522
1523 switch (client->proto) {
1524 case ZEBRA_ROUTE_VRRP:
1525 reason = ZEBRA_PROTODOWN_VRRP;
1526 break;
1527 case ZEBRA_ROUTE_SHARP:
1528 reason = ZEBRA_PROTODOWN_SHARP;
1529 break;
1530 default:
1531 reason = 0;
1532 break;
1533 }
1534
1535 zebra_if_set_protodown(ifp, down, reason);
1536
1537 stream_failure:
1538 return;
1539 }
1540
1541 bool zserv_nexthop_num_warn(const char *caller, const struct prefix *p,
1542 const unsigned int nexthop_num)
1543 {
1544 if (nexthop_num > zrouter.multipath_num) {
1545 char buff[PREFIX2STR_BUFFER];
1546
1547 if (p)
1548 prefix2str(p, buff, sizeof(buff));
1549
1550 flog_warn(
1551 EC_ZEBRA_MORE_NH_THAN_MULTIPATH,
1552 "%s: Prefix %s has %d nexthops, but we can only use the first %d",
1553 caller, (p ? buff : "(NULL)"), nexthop_num,
1554 zrouter.multipath_num);
1555 return true;
1556 }
1557
1558 return false;
1559 }
1560
1561 /*
1562 * Create a new nexthop based on a zapi nexthop.
1563 */
1564 static struct nexthop *nexthop_from_zapi(const struct zapi_nexthop *api_nh,
1565 uint32_t flags, struct prefix *p,
1566 uint16_t backup_nexthop_num)
1567 {
1568 struct nexthop *nexthop = NULL;
1569 struct ipaddr vtep_ip;
1570 struct interface *ifp;
1571 int i;
1572 char nhbuf[INET6_ADDRSTRLEN] = "";
1573
1574 switch (api_nh->type) {
1575 case NEXTHOP_TYPE_IFINDEX:
1576 nexthop = nexthop_from_ifindex(api_nh->ifindex, api_nh->vrf_id);
1577 break;
1578 case NEXTHOP_TYPE_IPV4:
1579 if (IS_ZEBRA_DEBUG_RECV) {
1580 inet_ntop(AF_INET, &api_nh->gate.ipv4, nhbuf,
1581 sizeof(nhbuf));
1582 zlog_debug("%s: nh=%s, vrf_id=%d", __func__,
1583 nhbuf, api_nh->vrf_id);
1584 }
1585 nexthop = nexthop_from_ipv4(&api_nh->gate.ipv4, NULL,
1586 api_nh->vrf_id);
1587 break;
1588 case NEXTHOP_TYPE_IPV4_IFINDEX:
1589 if (IS_ZEBRA_DEBUG_RECV) {
1590 inet_ntop(AF_INET, &api_nh->gate.ipv4, nhbuf,
1591 sizeof(nhbuf));
1592 zlog_debug("%s: nh=%s, vrf_id=%d, ifindex=%d",
1593 __func__, nhbuf, api_nh->vrf_id,
1594 api_nh->ifindex);
1595 }
1596
1597 nexthop = nexthop_from_ipv4_ifindex(
1598 &api_nh->gate.ipv4, NULL, api_nh->ifindex,
1599 api_nh->vrf_id);
1600
1601 /* Special handling for IPv4 routes sourced from EVPN:
1602 * the nexthop and associated MAC need to be installed.
1603 */
1604 if (CHECK_FLAG(api_nh->flags, ZAPI_NEXTHOP_FLAG_EVPN)) {
1605 memset(&vtep_ip, 0, sizeof(vtep_ip));
1606 vtep_ip.ipa_type = IPADDR_V4;
1607 memcpy(&(vtep_ip.ipaddr_v4), &(api_nh->gate.ipv4),
1608 sizeof(struct in_addr));
1609 zebra_rib_queue_evpn_route_add(
1610 api_nh->vrf_id, &api_nh->rmac, &vtep_ip, p);
1611 SET_FLAG(nexthop->flags, NEXTHOP_FLAG_EVPN);
1612 }
1613 break;
1614 case NEXTHOP_TYPE_IPV6:
1615 if (IS_ZEBRA_DEBUG_RECV) {
1616 inet_ntop(AF_INET6, &api_nh->gate.ipv6, nhbuf,
1617 sizeof(nhbuf));
1618 zlog_debug("%s: nh=%s, vrf_id=%d", __func__,
1619 nhbuf, api_nh->vrf_id);
1620 }
1621 nexthop = nexthop_from_ipv6(&api_nh->gate.ipv6, api_nh->vrf_id);
1622 break;
1623 case NEXTHOP_TYPE_IPV6_IFINDEX:
1624 if (IS_ZEBRA_DEBUG_RECV) {
1625 inet_ntop(AF_INET6, &api_nh->gate.ipv6, nhbuf,
1626 sizeof(nhbuf));
1627 zlog_debug("%s: nh=%s, vrf_id=%d, ifindex=%d",
1628 __func__, nhbuf, api_nh->vrf_id,
1629 api_nh->ifindex);
1630 }
1631 nexthop = nexthop_from_ipv6_ifindex(&api_nh->gate.ipv6,
1632 api_nh->ifindex,
1633 api_nh->vrf_id);
1634
1635 /* Special handling for IPv6 routes sourced from EVPN:
1636 * the nexthop and associated MAC need to be installed.
1637 */
1638 if (CHECK_FLAG(api_nh->flags, ZAPI_NEXTHOP_FLAG_EVPN)) {
1639 memset(&vtep_ip, 0, sizeof(vtep_ip));
1640 vtep_ip.ipa_type = IPADDR_V6;
1641 memcpy(&vtep_ip.ipaddr_v6, &(api_nh->gate.ipv6),
1642 sizeof(struct in6_addr));
1643 zebra_rib_queue_evpn_route_add(
1644 api_nh->vrf_id, &api_nh->rmac, &vtep_ip, p);
1645 SET_FLAG(nexthop->flags, NEXTHOP_FLAG_EVPN);
1646 }
1647 break;
1648 case NEXTHOP_TYPE_BLACKHOLE:
1649 if (IS_ZEBRA_DEBUG_RECV)
1650 zlog_debug("%s: nh blackhole %d",
1651 __func__, api_nh->bh_type);
1652
1653 nexthop =
1654 nexthop_from_blackhole(api_nh->bh_type, api_nh->vrf_id);
1655 break;
1656 }
1657
1658 /* Return early if we couldn't process the zapi nexthop */
1659 if (nexthop == NULL) {
1660 goto done;
1661 }
1662
1663 /* Mark nexthop as onlink either if client has explicitly told us
1664 * to or if the nexthop is on an 'unnumbered' interface.
1665 */
1666 if (CHECK_FLAG(api_nh->flags, ZAPI_NEXTHOP_FLAG_ONLINK))
1667 SET_FLAG(nexthop->flags, NEXTHOP_FLAG_ONLINK);
1668 else if (api_nh->type == NEXTHOP_TYPE_IPV4_IFINDEX) {
1669 ifp = if_lookup_by_index(api_nh->ifindex, api_nh->vrf_id);
1670 if (ifp && connected_is_unnumbered(ifp))
1671 SET_FLAG(nexthop->flags, NEXTHOP_FLAG_ONLINK);
1672 }
1673
1674 if (CHECK_FLAG(api_nh->flags, ZAPI_NEXTHOP_FLAG_WEIGHT))
1675 nexthop->weight = api_nh->weight;
1676
1677 if (CHECK_FLAG(api_nh->flags, ZAPI_NEXTHOP_FLAG_HAS_BACKUP)) {
1678 /* Validate count */
1679 if (api_nh->backup_num > NEXTHOP_MAX_BACKUPS) {
1680 if (IS_ZEBRA_DEBUG_RECV || IS_ZEBRA_DEBUG_EVENT)
1681 zlog_debug("%s: invalid backup nh count %d",
1682 __func__, api_nh->backup_num);
1683 nexthop_free(nexthop);
1684 nexthop = NULL;
1685 goto done;
1686 }
1687
1688 /* Copy backup info */
1689 SET_FLAG(nexthop->flags, NEXTHOP_FLAG_HAS_BACKUP);
1690 nexthop->backup_num = api_nh->backup_num;
1691
1692 for (i = 0; i < api_nh->backup_num; i++) {
1693 /* Validate backup index */
1694 if (api_nh->backup_idx[i] < backup_nexthop_num) {
1695 nexthop->backup_idx[i] = api_nh->backup_idx[i];
1696 } else {
1697 if (IS_ZEBRA_DEBUG_RECV || IS_ZEBRA_DEBUG_EVENT)
1698 zlog_debug("%s: invalid backup nh idx %d",
1699 __func__,
1700 api_nh->backup_idx[i]);
1701 nexthop_free(nexthop);
1702 nexthop = NULL;
1703 goto done;
1704 }
1705 }
1706 }
1707
1708 done:
1709 return nexthop;
1710 }
1711
1712 static bool zapi_read_nexthops(struct zserv *client, struct prefix *p,
1713 struct zapi_nexthop *nhops, uint32_t flags,
1714 uint32_t message, uint16_t nexthop_num,
1715 uint16_t backup_nh_num,
1716 struct nexthop_group **png,
1717 struct nhg_backup_info **pbnhg)
1718 {
1719 struct nexthop_group *ng = NULL;
1720 struct nhg_backup_info *bnhg = NULL;
1721 uint16_t i;
1722 struct nexthop *last_nh = NULL;
1723
1724 assert(!(png && pbnhg));
1725
1726 if (png)
1727 ng = nexthop_group_new();
1728
1729 if (pbnhg && backup_nh_num > 0) {
1730 if (IS_ZEBRA_DEBUG_RECV)
1731 zlog_debug("%s: adding %d backup nexthops", __func__,
1732 backup_nh_num);
1733
1734 bnhg = zebra_nhg_backup_alloc();
1735 }
1736
1737 /*
1738 * TBD should _all_ of the nexthop add operations use
1739 * api_nh->vrf_id instead of re->vrf_id ? I only changed
1740 * for cases NEXTHOP_TYPE_IPV4 and NEXTHOP_TYPE_IPV6.
1741 */
1742 for (i = 0; i < nexthop_num; i++) {
1743 struct nexthop *nexthop;
1744 enum lsp_types_t label_type;
1745 char nhbuf[NEXTHOP_STRLEN];
1746 char labelbuf[MPLS_LABEL_STRLEN];
1747 struct zapi_nexthop *api_nh = &nhops[i];
1748
1749 /* Convert zapi nexthop */
1750 nexthop = nexthop_from_zapi(api_nh, flags, p, backup_nh_num);
1751 if (!nexthop) {
1752 flog_warn(
1753 EC_ZEBRA_NEXTHOP_CREATION_FAILED,
1754 "%s: Nexthops Specified: %u(%u) but we failed to properly create one",
1755 __func__, nexthop_num, i);
1756 if (ng)
1757 nexthop_group_delete(&ng);
1758 if (bnhg)
1759 zebra_nhg_backup_free(&bnhg);
1760 return false;
1761 }
1762
1763 if (bnhg
1764 && CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_HAS_BACKUP)) {
1765 if (IS_ZEBRA_DEBUG_RECV) {
1766 nexthop2str(nexthop, nhbuf, sizeof(nhbuf));
1767 zlog_debug("%s: backup nh %s with BACKUP flag!",
1768 __func__, nhbuf);
1769 }
1770 UNSET_FLAG(nexthop->flags, NEXTHOP_FLAG_HAS_BACKUP);
1771 nexthop->backup_num = 0;
1772 }
1773
1774 if (CHECK_FLAG(message, ZAPI_MESSAGE_SRTE)) {
1775 SET_FLAG(nexthop->flags, NEXTHOP_FLAG_SRTE);
1776 nexthop->srte_color = api_nh->srte_color;
1777 }
1778
1779 /* MPLS labels for BGP-LU or Segment Routing */
1780 if (CHECK_FLAG(api_nh->flags, ZAPI_NEXTHOP_FLAG_LABEL)
1781 && api_nh->type != NEXTHOP_TYPE_IFINDEX
1782 && api_nh->type != NEXTHOP_TYPE_BLACKHOLE
1783 && api_nh->label_num > 0) {
1784
1785 label_type = lsp_type_from_re_type(client->proto);
1786 nexthop_add_labels(nexthop, label_type,
1787 api_nh->label_num,
1788 &api_nh->labels[0]);
1789 }
1790
1791 if (CHECK_FLAG(api_nh->flags, ZAPI_NEXTHOP_FLAG_SEG6LOCAL)
1792 && api_nh->type != NEXTHOP_TYPE_BLACKHOLE) {
1793 if (IS_ZEBRA_DEBUG_RECV)
1794 zlog_debug("%s: adding seg6local action %s",
1795 __func__,
1796 seg6local_action2str(
1797 api_nh->seg6local_action));
1798
1799 nexthop_add_srv6_seg6local(nexthop,
1800 api_nh->seg6local_action,
1801 &api_nh->seg6local_ctx);
1802 }
1803
1804 if (CHECK_FLAG(api_nh->flags, ZAPI_NEXTHOP_FLAG_SEG6)
1805 && api_nh->type != NEXTHOP_TYPE_BLACKHOLE) {
1806 if (IS_ZEBRA_DEBUG_RECV)
1807 zlog_debug("%s: adding seg6", __func__);
1808
1809 nexthop_add_srv6_seg6(nexthop, &api_nh->seg6_segs);
1810 }
1811
1812 if (IS_ZEBRA_DEBUG_RECV) {
1813 labelbuf[0] = '\0';
1814 nhbuf[0] = '\0';
1815
1816 nexthop2str(nexthop, nhbuf, sizeof(nhbuf));
1817
1818 if (nexthop->nh_label &&
1819 nexthop->nh_label->num_labels > 0) {
1820 mpls_label2str(nexthop->nh_label->num_labels,
1821 nexthop->nh_label->label,
1822 labelbuf, sizeof(labelbuf),
1823 false);
1824 }
1825
1826 zlog_debug("%s: nh=%s, vrf_id=%d %s",
1827 __func__, nhbuf, api_nh->vrf_id, labelbuf);
1828 }
1829
1830 if (ng) {
1831 /* Add new nexthop to temporary list. This list is
1832 * canonicalized - sorted - so that it can be hashed
1833 * later in route processing. We expect that the sender
1834 * has sent the list sorted, and the zapi client api
1835 * attempts to enforce that, so this should be
1836 * inexpensive - but it is necessary to support shared
1837 * nexthop-groups.
1838 */
1839 nexthop_group_add_sorted(ng, nexthop);
1840 }
1841 if (bnhg) {
1842 /* Note that the order of the backup nexthops is
1843 * significant, so we don't sort this list as we do the
1844 * primary nexthops, we just append.
1845 */
1846 if (last_nh)
1847 NEXTHOP_APPEND(last_nh, nexthop);
1848 else
1849 bnhg->nhe->nhg.nexthop = nexthop;
1850
1851 last_nh = nexthop;
1852 }
1853 }
1854
1855
1856 /* succesfully read, set caller pointers now */
1857 if (png)
1858 *png = ng;
1859
1860 if (pbnhg)
1861 *pbnhg = bnhg;
1862
1863 return true;
1864 }
1865
1866 static int zapi_nhg_decode(struct stream *s, int cmd, struct zapi_nhg *api_nhg)
1867 {
1868 uint16_t i;
1869 struct zapi_nexthop *znh;
1870
1871 STREAM_GETW(s, api_nhg->proto);
1872 STREAM_GETL(s, api_nhg->id);
1873
1874 if (cmd == ZEBRA_NHG_DEL)
1875 goto done;
1876
1877 STREAM_GETW(s, api_nhg->resilience.buckets);
1878 STREAM_GETL(s, api_nhg->resilience.idle_timer);
1879 STREAM_GETL(s, api_nhg->resilience.unbalanced_timer);
1880
1881 /* Nexthops */
1882 STREAM_GETW(s, api_nhg->nexthop_num);
1883
1884 if (zserv_nexthop_num_warn(__func__, NULL, api_nhg->nexthop_num))
1885 return -1;
1886
1887 if (api_nhg->nexthop_num <= 0) {
1888 flog_warn(EC_ZEBRA_NEXTHOP_CREATION_FAILED,
1889 "%s: No nexthops sent", __func__);
1890 return -1;
1891 }
1892
1893 for (i = 0; i < api_nhg->nexthop_num; i++) {
1894 znh = &((api_nhg->nexthops)[i]);
1895
1896 if (zapi_nexthop_decode(s, znh, 0, 0) != 0) {
1897 flog_warn(EC_ZEBRA_NEXTHOP_CREATION_FAILED,
1898 "%s: Nexthop creation failed", __func__);
1899 return -1;
1900 }
1901 }
1902
1903 /* Backup Nexthops */
1904 STREAM_GETW(s, api_nhg->backup_nexthop_num);
1905
1906 if (zserv_nexthop_num_warn(__func__, NULL, api_nhg->backup_nexthop_num))
1907 return -1;
1908
1909 for (i = 0; i < api_nhg->backup_nexthop_num; i++) {
1910 znh = &((api_nhg->backup_nexthops)[i]);
1911
1912 if (zapi_nexthop_decode(s, znh, 0, 0) != 0) {
1913 flog_warn(EC_ZEBRA_NEXTHOP_CREATION_FAILED,
1914 "%s: Backup Nexthop creation failed",
1915 __func__);
1916 return -1;
1917 }
1918 }
1919
1920 done:
1921 return 0;
1922
1923 stream_failure:
1924 flog_warn(
1925 EC_ZEBRA_NEXTHOP_CREATION_FAILED,
1926 "%s: Nexthop Group decode failed with some sort of stream read failure",
1927 __func__);
1928 return -1;
1929 }
1930
1931 static void zread_nhg_del(ZAPI_HANDLER_ARGS)
1932 {
1933 struct stream *s;
1934 struct zapi_nhg api_nhg = {};
1935 struct nhg_hash_entry *nhe;
1936
1937 s = msg;
1938 if (zapi_nhg_decode(s, hdr->command, &api_nhg) < 0) {
1939 if (IS_ZEBRA_DEBUG_RECV)
1940 zlog_debug("%s: Unable to decode zapi_nhg sent",
1941 __func__);
1942 return;
1943 }
1944
1945 /*
1946 * Delete the received nhg id
1947 */
1948 nhe = zebra_nhg_proto_del(api_nhg.id, api_nhg.proto);
1949
1950 if (nhe) {
1951 zebra_nhg_decrement_ref(nhe);
1952 zsend_nhg_notify(api_nhg.proto, client->instance,
1953 client->session_id, api_nhg.id,
1954 ZAPI_NHG_REMOVED);
1955 } else
1956 zsend_nhg_notify(api_nhg.proto, client->instance,
1957 client->session_id, api_nhg.id,
1958 ZAPI_NHG_REMOVE_FAIL);
1959 }
1960
1961 static void zread_nhg_add(ZAPI_HANDLER_ARGS)
1962 {
1963 struct stream *s;
1964 struct zapi_nhg api_nhg = {};
1965 struct nexthop_group *nhg = NULL;
1966 struct nhg_backup_info *bnhg = NULL;
1967 struct nhg_hash_entry *nhe;
1968
1969 s = msg;
1970 if (zapi_nhg_decode(s, hdr->command, &api_nhg) < 0) {
1971 if (IS_ZEBRA_DEBUG_RECV)
1972 zlog_debug("%s: Unable to decode zapi_nhg sent",
1973 __func__);
1974 return;
1975 }
1976
1977 if ((!zapi_read_nexthops(client, NULL, api_nhg.nexthops, 0, 0,
1978 api_nhg.nexthop_num,
1979 api_nhg.backup_nexthop_num, &nhg, NULL))
1980 || (!zapi_read_nexthops(client, NULL, api_nhg.backup_nexthops, 0, 0,
1981 api_nhg.backup_nexthop_num,
1982 api_nhg.backup_nexthop_num, NULL, &bnhg))) {
1983
1984 flog_warn(EC_ZEBRA_NEXTHOP_CREATION_FAILED,
1985 "%s: Nexthop Group Creation failed", __func__);
1986
1987 /* Free any local allocations */
1988 nexthop_group_delete(&nhg);
1989 zebra_nhg_backup_free(&bnhg);
1990
1991 return;
1992 }
1993
1994 /* Create a temporary nhe */
1995 nhe = zebra_nhg_alloc();
1996 nhe->id = api_nhg.id;
1997 nhe->type = api_nhg.proto;
1998 nhe->zapi_instance = client->instance;
1999 nhe->zapi_session = client->session_id;
2000
2001 /* Take over the list(s) of nexthops */
2002 nhe->nhg.nexthop = nhg->nexthop;
2003 nhg->nexthop = NULL;
2004
2005 nhe->nhg.nhgr = api_nhg.resilience;
2006
2007 if (bnhg) {
2008 nhe->backup_info = bnhg;
2009 bnhg = NULL;
2010 }
2011
2012 /*
2013 * TODO:
2014 * Assume fully resolved for now and install.
2015 * Resolution is going to need some more work.
2016 */
2017
2018 /* Enqueue to workqueue for processing */
2019 rib_queue_nhe_add(nhe);
2020
2021 /* Free any local allocations */
2022 nexthop_group_delete(&nhg);
2023 zebra_nhg_backup_free(&bnhg);
2024
2025 }
2026
2027 static void zread_route_add(ZAPI_HANDLER_ARGS)
2028 {
2029 struct stream *s;
2030 struct zapi_route api;
2031 afi_t afi;
2032 struct prefix_ipv6 *src_p = NULL;
2033 struct route_entry *re;
2034 struct nexthop_group *ng = NULL;
2035 struct nhg_backup_info *bnhg = NULL;
2036 int ret;
2037 vrf_id_t vrf_id;
2038 struct nhg_hash_entry nhe, *n = NULL;
2039
2040 s = msg;
2041 if (zapi_route_decode(s, &api) < 0) {
2042 if (IS_ZEBRA_DEBUG_RECV)
2043 zlog_debug("%s: Unable to decode zapi_route sent",
2044 __func__);
2045 return;
2046 }
2047
2048 vrf_id = zvrf_id(zvrf);
2049
2050 if (IS_ZEBRA_DEBUG_RECV)
2051 zlog_debug("%s: p=(%u:%u)%pFX, msg flags=0x%x, flags=0x%x",
2052 __func__, vrf_id, api.tableid, &api.prefix,
2053 (int)api.message, api.flags);
2054
2055 /* Allocate new route. */
2056 re = zebra_rib_route_entry_new(
2057 vrf_id, api.type, api.instance, api.flags, api.nhgid,
2058 api.tableid ? api.tableid : zvrf->table_id, api.metric, api.mtu,
2059 api.distance, api.tag);
2060
2061 if (!CHECK_FLAG(api.message, ZAPI_MESSAGE_NHG)
2062 && (!CHECK_FLAG(api.message, ZAPI_MESSAGE_NEXTHOP)
2063 || api.nexthop_num == 0)) {
2064 flog_warn(
2065 EC_ZEBRA_RX_ROUTE_NO_NEXTHOPS,
2066 "%s: received a route without nexthops for prefix %pFX from client %s",
2067 __func__, &api.prefix,
2068 zebra_route_string(client->proto));
2069
2070 XFREE(MTYPE_RE, re);
2071 return;
2072 }
2073
2074 /* Report misuse of the backup flag */
2075 if (CHECK_FLAG(api.message, ZAPI_MESSAGE_BACKUP_NEXTHOPS)
2076 && api.backup_nexthop_num == 0) {
2077 if (IS_ZEBRA_DEBUG_RECV || IS_ZEBRA_DEBUG_EVENT)
2078 zlog_debug(
2079 "%s: client %s: BACKUP flag set but no backup nexthops, prefix %pFX",
2080 __func__, zebra_route_string(client->proto),
2081 &api.prefix);
2082 }
2083
2084 if (!re->nhe_id
2085 && (!zapi_read_nexthops(client, &api.prefix, api.nexthops,
2086 api.flags, api.message, api.nexthop_num,
2087 api.backup_nexthop_num, &ng, NULL)
2088 || !zapi_read_nexthops(client, &api.prefix, api.backup_nexthops,
2089 api.flags, api.message,
2090 api.backup_nexthop_num,
2091 api.backup_nexthop_num, NULL, &bnhg))) {
2092
2093 nexthop_group_delete(&ng);
2094 zebra_nhg_backup_free(&bnhg);
2095 XFREE(MTYPE_RE, re);
2096 return;
2097 }
2098
2099 if (CHECK_FLAG(api.message, ZAPI_MESSAGE_OPAQUE)) {
2100 re->opaque =
2101 XMALLOC(MTYPE_RE_OPAQUE,
2102 sizeof(struct re_opaque) + api.opaque.length);
2103 re->opaque->length = api.opaque.length;
2104 memcpy(re->opaque->data, api.opaque.data, re->opaque->length);
2105 }
2106
2107 afi = family2afi(api.prefix.family);
2108 if (afi != AFI_IP6 && CHECK_FLAG(api.message, ZAPI_MESSAGE_SRCPFX)) {
2109 flog_warn(EC_ZEBRA_RX_SRCDEST_WRONG_AFI,
2110 "%s: Received SRC Prefix but afi is not v6",
2111 __func__);
2112 nexthop_group_delete(&ng);
2113 zebra_nhg_backup_free(&bnhg);
2114 XFREE(MTYPE_RE_OPAQUE, re->opaque);
2115 XFREE(MTYPE_RE, re);
2116 return;
2117 }
2118 if (CHECK_FLAG(api.message, ZAPI_MESSAGE_SRCPFX))
2119 src_p = &api.src_prefix;
2120
2121 if (api.safi != SAFI_UNICAST && api.safi != SAFI_MULTICAST) {
2122 flog_warn(EC_LIB_ZAPI_MISSMATCH,
2123 "%s: Received safi: %d but we can only accept UNICAST or MULTICAST",
2124 __func__, api.safi);
2125 nexthop_group_delete(&ng);
2126 zebra_nhg_backup_free(&bnhg);
2127 XFREE(MTYPE_RE_OPAQUE, re->opaque);
2128 XFREE(MTYPE_RE, re);
2129 return;
2130 }
2131
2132 /*
2133 * If we have an ID, this proto owns the NHG it sent along with the
2134 * route, so we just send the ID into rib code with it.
2135 *
2136 * Havent figured out how to handle backup NHs with this yet, so lets
2137 * keep that separate.
2138 * Include backup info with the route. We use a temporary nhe here;
2139 * if this is a new/unknown nhe, a new copy will be allocated
2140 * and stored.
2141 */
2142 if (!re->nhe_id) {
2143 zebra_nhe_init(&nhe, afi, ng->nexthop);
2144 nhe.nhg.nexthop = ng->nexthop;
2145 nhe.backup_info = bnhg;
2146 n = zebra_nhe_copy(&nhe, 0);
2147 }
2148 ret = rib_add_multipath_nhe(afi, api.safi, &api.prefix, src_p, re, n,
2149 false);
2150
2151 /*
2152 * rib_add_multipath_nhe only fails in a couple spots
2153 * and in those spots we have not freed memory
2154 */
2155 if (ret == -1) {
2156 client->error_cnt++;
2157 XFREE(MTYPE_RE_OPAQUE, re->opaque);
2158 XFREE(MTYPE_RE, re);
2159 }
2160
2161 /* At this point, these allocations are not needed: 're' has been
2162 * retained or freed, and if 're' still exists, it is using
2163 * a reference to a shared group object.
2164 */
2165 nexthop_group_delete(&ng);
2166 if (bnhg)
2167 zebra_nhg_backup_free(&bnhg);
2168
2169 /* Stats */
2170 switch (api.prefix.family) {
2171 case AF_INET:
2172 if (ret == 0)
2173 client->v4_route_add_cnt++;
2174 else if (ret == 1)
2175 client->v4_route_upd8_cnt++;
2176 break;
2177 case AF_INET6:
2178 if (ret == 0)
2179 client->v6_route_add_cnt++;
2180 else if (ret == 1)
2181 client->v6_route_upd8_cnt++;
2182 break;
2183 }
2184 }
2185
2186 void zapi_re_opaque_free(struct re_opaque *opaque)
2187 {
2188 XFREE(MTYPE_RE_OPAQUE, opaque);
2189 }
2190
2191 static void zread_route_del(ZAPI_HANDLER_ARGS)
2192 {
2193 struct stream *s;
2194 struct zapi_route api;
2195 afi_t afi;
2196 struct prefix_ipv6 *src_p = NULL;
2197 uint32_t table_id;
2198
2199 s = msg;
2200 if (zapi_route_decode(s, &api) < 0)
2201 return;
2202
2203 afi = family2afi(api.prefix.family);
2204 if (afi != AFI_IP6 && CHECK_FLAG(api.message, ZAPI_MESSAGE_SRCPFX)) {
2205 flog_warn(EC_ZEBRA_RX_SRCDEST_WRONG_AFI,
2206 "%s: Received a src prefix while afi is not v6",
2207 __func__);
2208 return;
2209 }
2210 if (CHECK_FLAG(api.message, ZAPI_MESSAGE_SRCPFX))
2211 src_p = &api.src_prefix;
2212
2213 if (api.tableid)
2214 table_id = api.tableid;
2215 else
2216 table_id = zvrf->table_id;
2217
2218 if (IS_ZEBRA_DEBUG_RECV)
2219 zlog_debug("%s: p=(%u:%u)%pFX, msg flags=0x%x, flags=0x%x",
2220 __func__, zvrf_id(zvrf), table_id, &api.prefix,
2221 (int)api.message, api.flags);
2222
2223 rib_delete(afi, api.safi, zvrf_id(zvrf), api.type, api.instance,
2224 api.flags, &api.prefix, src_p, NULL, 0, table_id, api.metric,
2225 api.distance, false);
2226
2227 /* Stats */
2228 switch (api.prefix.family) {
2229 case AF_INET:
2230 client->v4_route_del_cnt++;
2231 break;
2232 case AF_INET6:
2233 client->v6_route_del_cnt++;
2234 break;
2235 }
2236 }
2237
2238 /* MRIB Nexthop lookup for IPv4. */
2239 static void zread_nexthop_lookup_mrib(ZAPI_HANDLER_ARGS)
2240 {
2241 struct ipaddr addr;
2242 struct route_entry *re = NULL;
2243
2244 STREAM_GET_IPADDR(msg, &addr);
2245
2246 switch (addr.ipa_type) {
2247 case IPADDR_V4:
2248 re = rib_match_ipv4_multicast(zvrf_id(zvrf), addr.ipaddr_v4,
2249 NULL);
2250 break;
2251 case IPADDR_V6:
2252 re = rib_match_ipv6_multicast(zvrf_id(zvrf), addr.ipaddr_v6,
2253 NULL);
2254 break;
2255 case IPADDR_NONE:
2256 /* ??? */
2257 goto stream_failure;
2258 }
2259
2260 zsend_nexthop_lookup_mrib(client, &addr, re, zvrf);
2261
2262 stream_failure:
2263 return;
2264 }
2265
2266 /* Register zebra server router-id information. Send current router-id */
2267 static void zread_router_id_add(ZAPI_HANDLER_ARGS)
2268 {
2269 afi_t afi;
2270 struct prefix p;
2271 struct prefix zero;
2272
2273 STREAM_GETW(msg, afi);
2274
2275 if (afi <= AFI_UNSPEC || afi >= AFI_MAX) {
2276 zlog_warn(
2277 "Invalid AFI %u while registering for router ID notifications",
2278 afi);
2279 goto stream_failure;
2280 }
2281
2282 /* Router-id information is needed. */
2283 vrf_bitmap_set(client->ridinfo[afi], zvrf_id(zvrf));
2284
2285 router_id_get(afi, &p, zvrf);
2286
2287 /*
2288 * If we have not officially setup a router-id let's not
2289 * tell the upper level protocol about it yet.
2290 */
2291 memset(&zero, 0, sizeof(zero));
2292 if ((p.family == AF_INET && p.u.prefix4.s_addr == INADDR_ANY)
2293 || (p.family == AF_INET6
2294 && memcmp(&p.u.prefix6, &zero.u.prefix6,
2295 sizeof(struct in6_addr))
2296 == 0))
2297 return;
2298
2299 zsend_router_id_update(client, afi, &p, zvrf_id(zvrf));
2300
2301 stream_failure:
2302 return;
2303 }
2304
2305 /* Unregister zebra server router-id information. */
2306 static void zread_router_id_delete(ZAPI_HANDLER_ARGS)
2307 {
2308 afi_t afi;
2309
2310 STREAM_GETW(msg, afi);
2311
2312 if (afi <= AFI_UNSPEC || afi >= AFI_MAX) {
2313 zlog_warn(
2314 "Invalid AFI %u while unregistering from router ID notifications",
2315 afi);
2316 goto stream_failure;
2317 }
2318
2319 vrf_bitmap_unset(client->ridinfo[afi], zvrf_id(zvrf));
2320
2321 stream_failure:
2322 return;
2323 }
2324
2325 static void zsend_capabilities(struct zserv *client, struct zebra_vrf *zvrf)
2326 {
2327 struct stream *s = stream_new(ZEBRA_MAX_PACKET_SIZ);
2328
2329 zclient_create_header(s, ZEBRA_CAPABILITIES, zvrf->vrf->vrf_id);
2330 stream_putl(s, vrf_get_backend());
2331 stream_putc(s, mpls_enabled);
2332 stream_putl(s, zrouter.multipath_num);
2333 stream_putc(s, zebra_mlag_get_role());
2334
2335 stream_putw_at(s, 0, stream_get_endp(s));
2336 zserv_send_message(client, s);
2337 }
2338
2339 void zsend_capabilities_all_clients(void)
2340 {
2341 struct listnode *node, *nnode;
2342 struct zebra_vrf *zvrf;
2343 struct zserv *client;
2344
2345 zvrf = vrf_info_lookup(VRF_DEFAULT);
2346 for (ALL_LIST_ELEMENTS(zrouter.client_list, node, nnode, client)) {
2347 /* Do not send unsolicited messages to synchronous clients. */
2348 if (client->synchronous)
2349 continue;
2350
2351 zsend_capabilities(client, zvrf);
2352 }
2353 }
2354
2355 /* Tie up route-type and client->sock */
2356 static void zread_hello(ZAPI_HANDLER_ARGS)
2357 {
2358 /* type of protocol (lib/zebra.h) */
2359 uint8_t proto;
2360 unsigned short instance;
2361 uint8_t notify;
2362 uint8_t synchronous;
2363 uint32_t session_id;
2364
2365 STREAM_GETC(msg, proto);
2366 STREAM_GETW(msg, instance);
2367 STREAM_GETL(msg, session_id);
2368 STREAM_GETC(msg, notify);
2369 STREAM_GETC(msg, synchronous);
2370 if (notify)
2371 client->notify_owner = true;
2372
2373 if (synchronous)
2374 client->synchronous = true;
2375
2376 /* accept only dynamic routing protocols */
2377 if ((proto < ZEBRA_ROUTE_MAX) && (proto > ZEBRA_ROUTE_CONNECT)) {
2378 zlog_notice(
2379 "client %d says hello and bids fair to announce only %s routes vrf=%u",
2380 client->sock, zebra_route_string(proto),
2381 zvrf->vrf->vrf_id);
2382 if (instance)
2383 zlog_notice("client protocol instance %d", instance);
2384
2385 client->proto = proto;
2386 client->instance = instance;
2387 client->session_id = session_id;
2388
2389 /* Graceful restart processing for client connect */
2390 zebra_gr_client_reconnect(client);
2391 }
2392
2393 if (!client->synchronous) {
2394 zsend_capabilities(client, zvrf);
2395 zebra_vrf_update_all(client);
2396 }
2397 stream_failure:
2398 return;
2399 }
2400
2401 /* Unregister all information in a VRF. */
2402 static void zread_vrf_unregister(ZAPI_HANDLER_ARGS)
2403 {
2404 int i;
2405 afi_t afi;
2406
2407 for (afi = AFI_IP; afi < AFI_MAX; afi++) {
2408 for (i = 0; i < ZEBRA_ROUTE_MAX; i++)
2409 vrf_bitmap_unset(client->redist[afi][i], zvrf_id(zvrf));
2410 vrf_bitmap_unset(client->redist_default[afi], zvrf_id(zvrf));
2411 vrf_bitmap_unset(client->ridinfo[afi], zvrf_id(zvrf));
2412 vrf_bitmap_unset(client->nhrp_neighinfo[afi], zvrf_id(zvrf));
2413 }
2414 }
2415
2416 /*
2417 * Validate incoming zapi mpls lsp / labels message
2418 */
2419 static int zapi_labels_validate(const struct zapi_labels *zl)
2420 {
2421 int ret = -1;
2422 int i, j, idx;
2423 uint32_t bits[8];
2424 uint32_t ival;
2425 const struct zapi_nexthop *znh;
2426
2427 /* Validate backup info: no duplicates for a single primary */
2428 if (zl->backup_nexthop_num == 0) {
2429 ret = 0;
2430 goto done;
2431 }
2432
2433 for (j = 0; j < zl->nexthop_num; j++) {
2434 znh = &zl->nexthops[j];
2435
2436 memset(bits, 0, sizeof(bits));
2437
2438 for (i = 0; i < znh->backup_num; i++) {
2439 idx = znh->backup_idx[i] / 32;
2440
2441 ival = 1 << znh->backup_idx[i] % 32;
2442
2443 /* Check whether value is already used */
2444 if (ival & bits[idx]) {
2445 /* Fail */
2446
2447 if (IS_ZEBRA_DEBUG_RECV)
2448 zlog_debug("%s: invalid zapi mpls message: duplicate backup nexthop index %d",
2449 __func__,
2450 znh->backup_idx[i]);
2451 goto done;
2452 }
2453
2454 /* Mark index value */
2455 bits[idx] |= ival;
2456 }
2457 }
2458
2459 ret = 0;
2460
2461 done:
2462
2463 return ret;
2464 }
2465
2466 /*
2467 * Handle request to create an MPLS LSP.
2468 *
2469 * A single message can fully specify an LSP with multiple nexthops.
2470 *
2471 * When the optional ZAPI_LABELS_FTN flag is set, the specified FEC (route) is
2472 * updated to use the received label(s).
2473 */
2474 static void zread_mpls_labels_add(ZAPI_HANDLER_ARGS)
2475 {
2476 struct stream *s;
2477 struct zapi_labels zl;
2478
2479 /* Get input stream. */
2480 s = msg;
2481 if (zapi_labels_decode(s, &zl) < 0) {
2482 if (IS_ZEBRA_DEBUG_RECV)
2483 zlog_debug("%s: Unable to decode zapi_labels sent",
2484 __func__);
2485 return;
2486 }
2487
2488 if (!mpls_enabled)
2489 return;
2490
2491 /* Validate; will debug on failure */
2492 if (zapi_labels_validate(&zl) < 0)
2493 return;
2494
2495 mpls_zapi_labels_process(true, zvrf, &zl);
2496 }
2497
2498 /*
2499 * Handle request to delete an MPLS LSP.
2500 *
2501 * An LSP is identified by its type and local label. When the received message
2502 * doesn't contain any nexthop, the whole LSP is deleted. Otherwise, only the
2503 * listed LSP nexthops (aka NHLFEs) are deleted.
2504 *
2505 * When the optional ZAPI_LABELS_FTN flag is set, the labels of the specified
2506 * FEC (route) nexthops are deleted.
2507 */
2508 static void zread_mpls_labels_delete(ZAPI_HANDLER_ARGS)
2509 {
2510 struct stream *s;
2511 struct zapi_labels zl;
2512
2513 /* Get input stream. */
2514 s = msg;
2515 if (zapi_labels_decode(s, &zl) < 0) {
2516 if (IS_ZEBRA_DEBUG_RECV)
2517 zlog_debug("%s: Unable to decode zapi_labels sent",
2518 __func__);
2519 return;
2520 }
2521
2522 if (!mpls_enabled)
2523 return;
2524
2525 if (zl.nexthop_num > 0) {
2526 mpls_zapi_labels_process(false /*delete*/, zvrf, &zl);
2527 } else {
2528 mpls_lsp_uninstall_all_vrf(zvrf, zl.type, zl.local_label);
2529
2530 if (CHECK_FLAG(zl.message, ZAPI_LABELS_FTN))
2531 mpls_ftn_uninstall(zvrf, zl.type, &zl.route.prefix,
2532 zl.route.type, zl.route.instance);
2533 }
2534 }
2535
2536 /*
2537 * Handle request to add an MPLS LSP or change an existing one.
2538 *
2539 * A single message can fully specify an LSP with multiple nexthops.
2540 *
2541 * When the optional ZAPI_LABELS_FTN flag is set, the specified FEC (route) is
2542 * updated to use the received label(s).
2543 *
2544 * NOTE: zebra will use route replace semantics (make-before-break) to update
2545 * the LSP in the forwarding plane if that's supported by the underlying
2546 * platform.
2547 */
2548 static void zread_mpls_labels_replace(ZAPI_HANDLER_ARGS)
2549 {
2550 struct stream *s;
2551 struct zapi_labels zl;
2552
2553 /* Get input stream. */
2554 s = msg;
2555 if (zapi_labels_decode(s, &zl) < 0) {
2556 if (IS_ZEBRA_DEBUG_RECV)
2557 zlog_debug("%s: Unable to decode zapi_labels sent",
2558 __func__);
2559 return;
2560 }
2561
2562 if (!mpls_enabled)
2563 return;
2564
2565 /* Validate; will debug on failure */
2566 if (zapi_labels_validate(&zl) < 0)
2567 return;
2568
2569 /* This removes everything, then re-adds from the client's
2570 * zapi message. Since the LSP will be processed later, on this
2571 * this same pthread, all of the changes will 'appear' at once.
2572 */
2573 mpls_lsp_uninstall_all_vrf(zvrf, zl.type, zl.local_label);
2574 if (CHECK_FLAG(zl.message, ZAPI_LABELS_FTN))
2575 mpls_ftn_uninstall(zvrf, zl.type, &zl.route.prefix,
2576 zl.route.type, zl.route.instance);
2577
2578 mpls_zapi_labels_process(true, zvrf, &zl);
2579 }
2580
2581 static void zread_sr_policy_set(ZAPI_HANDLER_ARGS)
2582 {
2583 struct stream *s;
2584 struct zapi_sr_policy zp;
2585 struct zapi_srte_tunnel *zt;
2586 struct zebra_sr_policy *policy;
2587
2588 /* Get input stream. */
2589 s = msg;
2590 if (zapi_sr_policy_decode(s, &zp) < 0) {
2591 if (IS_ZEBRA_DEBUG_RECV)
2592 zlog_debug("%s: Unable to decode zapi_sr_policy sent",
2593 __func__);
2594 return;
2595 }
2596 zt = &zp.segment_list;
2597 if (zt->label_num < 1) {
2598 if (IS_ZEBRA_DEBUG_RECV)
2599 zlog_debug(
2600 "%s: SR-TE tunnel must contain at least one label",
2601 __func__);
2602 return;
2603 }
2604
2605 if (!mpls_enabled)
2606 return;
2607
2608 policy = zebra_sr_policy_find(zp.color, &zp.endpoint);
2609 if (!policy)
2610 policy = zebra_sr_policy_add(zp.color, &zp.endpoint, zp.name);
2611 /* TODO: per-VRF list of SR-TE policies. */
2612 policy->zvrf = zvrf;
2613
2614 zebra_sr_policy_validate(policy, &zp.segment_list);
2615 }
2616
2617 static void zread_sr_policy_delete(ZAPI_HANDLER_ARGS)
2618 {
2619 struct stream *s;
2620 struct zapi_sr_policy zp;
2621 struct zebra_sr_policy *policy;
2622
2623 /* Get input stream. */
2624 s = msg;
2625 if (zapi_sr_policy_decode(s, &zp) < 0) {
2626 if (IS_ZEBRA_DEBUG_RECV)
2627 zlog_debug("%s: Unable to decode zapi_sr_policy sent",
2628 __func__);
2629 return;
2630 }
2631
2632 if (!mpls_enabled)
2633 return;
2634
2635 policy = zebra_sr_policy_find(zp.color, &zp.endpoint);
2636 if (!policy) {
2637 if (IS_ZEBRA_DEBUG_RECV)
2638 zlog_debug("%s: Unable to find SR-TE policy", __func__);
2639 return;
2640 }
2641
2642 zebra_sr_policy_del(policy);
2643 }
2644
2645 int zsend_sr_policy_notify_status(uint32_t color, struct ipaddr *endpoint,
2646 char *name, int status)
2647 {
2648 struct zserv *client;
2649 struct stream *s;
2650
2651 client = zserv_find_client(ZEBRA_ROUTE_SRTE, 0);
2652 if (!client) {
2653 if (IS_ZEBRA_DEBUG_PACKET)
2654 zlog_debug(
2655 "Not notifying pathd about policy %s"
2656 " status change to %d",
2657 name, status);
2658 return 0;
2659 }
2660
2661 if (IS_ZEBRA_DEBUG_PACKET)
2662 zlog_debug(
2663 "Notifying pathd about policy %s status change"
2664 " to %d",
2665 name, status);
2666
2667 s = stream_new(ZEBRA_MAX_PACKET_SIZ);
2668 stream_reset(s);
2669
2670 zclient_create_header(s, ZEBRA_SR_POLICY_NOTIFY_STATUS, VRF_DEFAULT);
2671 stream_putl(s, color);
2672 stream_put_ipaddr(s, endpoint);
2673 stream_write(s, name, SRTE_POLICY_NAME_MAX_LENGTH);
2674 stream_putl(s, status);
2675
2676 stream_putw_at(s, 0, stream_get_endp(s));
2677
2678 return zserv_send_message(client, s);
2679 }
2680
2681 /* Send client close notify to client */
2682 int zsend_client_close_notify(struct zserv *client, struct zserv *closed_client)
2683 {
2684 struct stream *s = stream_new(ZEBRA_MAX_PACKET_SIZ);
2685
2686 zclient_create_header(s, ZEBRA_CLIENT_CLOSE_NOTIFY, VRF_DEFAULT);
2687
2688 stream_putc(s, closed_client->proto);
2689 stream_putw(s, closed_client->instance);
2690 stream_putl(s, closed_client->session_id);
2691
2692 stream_putw_at(s, 0, stream_get_endp(s));
2693
2694 return zserv_send_message(client, s);
2695 }
2696
2697 int zsend_srv6_manager_get_locator_chunk_response(struct zserv *client,
2698 vrf_id_t vrf_id,
2699 struct srv6_locator *loc)
2700 {
2701 struct srv6_locator_chunk chunk = {};
2702 struct stream *s = stream_new(ZEBRA_MAX_PACKET_SIZ);
2703
2704 strlcpy(chunk.locator_name, loc->name, sizeof(chunk.locator_name));
2705 chunk.prefix = loc->prefix;
2706 chunk.block_bits_length = loc->block_bits_length;
2707 chunk.node_bits_length = loc->node_bits_length;
2708 chunk.function_bits_length = loc->function_bits_length;
2709 chunk.argument_bits_length = loc->argument_bits_length;
2710 chunk.keep = 0;
2711 chunk.proto = client->proto;
2712 chunk.instance = client->instance;
2713 chunk.flags = loc->flags;
2714
2715 zclient_create_header(s, ZEBRA_SRV6_MANAGER_GET_LOCATOR_CHUNK, vrf_id);
2716 zapi_srv6_locator_chunk_encode(s, &chunk);
2717 stream_putw_at(s, 0, stream_get_endp(s));
2718 return zserv_send_message(client, s);
2719 }
2720
2721 /* Send response to a table manager connect request to client */
2722 static void zread_table_manager_connect(struct zserv *client,
2723 struct stream *msg, vrf_id_t vrf_id)
2724 {
2725 struct stream *s;
2726 uint8_t proto;
2727 uint16_t instance;
2728 struct vrf *vrf = vrf_lookup_by_id(vrf_id);
2729
2730 s = msg;
2731
2732 /* Get data. */
2733 STREAM_GETC(s, proto);
2734 STREAM_GETW(s, instance);
2735
2736 /* accept only dynamic routing protocols */
2737 if ((proto >= ZEBRA_ROUTE_MAX) || (proto <= ZEBRA_ROUTE_STATIC)) {
2738 flog_err(EC_ZEBRA_TM_WRONG_PROTO,
2739 "client %d has wrong protocol %s", client->sock,
2740 zebra_route_string(proto));
2741 zsend_table_manager_connect_response(client, vrf_id, 1);
2742 return;
2743 }
2744 zlog_notice("client %d with vrf %s(%u) instance %u connected as %s",
2745 client->sock, VRF_LOGNAME(vrf), vrf_id, instance,
2746 zebra_route_string(proto));
2747 client->proto = proto;
2748 client->instance = instance;
2749
2750 /*
2751 * Release previous labels of same protocol and instance.
2752 * This is done in case it restarted from an unexpected shutdown.
2753 */
2754 release_daemon_table_chunks(client);
2755
2756 zsend_table_manager_connect_response(client, vrf_id, 0);
2757
2758 stream_failure:
2759 return;
2760 }
2761
2762 static void zread_label_manager_connect(struct zserv *client,
2763 struct stream *msg, vrf_id_t vrf_id)
2764 {
2765 struct stream *s;
2766 /* type of protocol (lib/zebra.h) */
2767 uint8_t proto;
2768 unsigned short instance;
2769
2770 /* Get input stream. */
2771 s = msg;
2772
2773 /* Get data. */
2774 STREAM_GETC(s, proto);
2775 STREAM_GETW(s, instance);
2776
2777 /* accept only dynamic routing protocols */
2778 if ((proto >= ZEBRA_ROUTE_MAX) || (proto <= ZEBRA_ROUTE_STATIC)) {
2779 flog_err(EC_ZEBRA_TM_WRONG_PROTO,
2780 "client %d has wrong protocol %s", client->sock,
2781 zebra_route_string(proto));
2782 zsend_label_manager_connect_response(client, vrf_id, 1);
2783 return;
2784 }
2785
2786 /* recall proto and instance in this socket */
2787 client->proto = proto;
2788 client->instance = instance;
2789
2790 /* call hook for connection using wrapper */
2791 lm_client_connect_call(client, vrf_id);
2792
2793 stream_failure:
2794 return;
2795 }
2796
2797 static void zread_get_label_chunk(struct zserv *client, struct stream *msg,
2798 vrf_id_t vrf_id)
2799 {
2800 struct stream *s;
2801 uint8_t keep;
2802 uint32_t size, base;
2803 struct label_manager_chunk *lmc = NULL;
2804 uint8_t proto;
2805 unsigned short instance;
2806
2807 /* Get input stream. */
2808 s = msg;
2809
2810 /* Get data. */
2811 STREAM_GETC(s, proto);
2812 STREAM_GETW(s, instance);
2813 STREAM_GETC(s, keep);
2814 STREAM_GETL(s, size);
2815 STREAM_GETL(s, base);
2816
2817 assert(proto == client->proto && instance == client->instance);
2818
2819 /* call hook to get a chunk using wrapper */
2820 lm_get_chunk_call(&lmc, client, keep, size, base, vrf_id);
2821
2822 stream_failure:
2823 return;
2824 }
2825
2826 static void zread_release_label_chunk(struct zserv *client, struct stream *msg)
2827 {
2828 struct stream *s;
2829 uint32_t start, end;
2830 uint8_t proto;
2831 unsigned short instance;
2832
2833 /* Get input stream. */
2834 s = msg;
2835
2836 /* Get data. */
2837 STREAM_GETC(s, proto);
2838 STREAM_GETW(s, instance);
2839 STREAM_GETL(s, start);
2840 STREAM_GETL(s, end);
2841
2842 assert(proto == client->proto && instance == client->instance);
2843
2844 /* call hook to release a chunk using wrapper */
2845 lm_release_chunk_call(client, start, end);
2846
2847 stream_failure:
2848 return;
2849 }
2850
2851 static void zread_label_manager_request(ZAPI_HANDLER_ARGS)
2852 {
2853 if (hdr->command == ZEBRA_LABEL_MANAGER_CONNECT
2854 || hdr->command == ZEBRA_LABEL_MANAGER_CONNECT_ASYNC)
2855 zread_label_manager_connect(client, msg, zvrf_id(zvrf));
2856 else {
2857 if (hdr->command == ZEBRA_GET_LABEL_CHUNK)
2858 zread_get_label_chunk(client, msg, zvrf_id(zvrf));
2859 else if (hdr->command == ZEBRA_RELEASE_LABEL_CHUNK)
2860 zread_release_label_chunk(client, msg);
2861 }
2862 }
2863
2864 static void zread_get_table_chunk(struct zserv *client, struct stream *msg,
2865 struct zebra_vrf *zvrf)
2866 {
2867 struct stream *s;
2868 uint32_t size;
2869 struct table_manager_chunk *tmc;
2870
2871 /* Get input stream. */
2872 s = msg;
2873
2874 /* Get data. */
2875 STREAM_GETL(s, size);
2876
2877 tmc = assign_table_chunk(client->proto, client->instance, size, zvrf);
2878 if (!tmc)
2879 flog_err(EC_ZEBRA_TM_CANNOT_ASSIGN_CHUNK,
2880 "%s: Unable to assign Table Chunk of size %u",
2881 __func__, size);
2882 else
2883 zlog_debug("Assigned Table Chunk %u - %u", tmc->start,
2884 tmc->end);
2885 /* send response back */
2886 zsend_assign_table_chunk_response(client, zvrf_id(zvrf), tmc);
2887
2888 stream_failure:
2889 return;
2890 }
2891
2892 static void zread_release_table_chunk(struct zserv *client, struct stream *msg,
2893 struct zebra_vrf *zvrf)
2894 {
2895 struct stream *s;
2896 uint32_t start, end;
2897
2898 /* Get input stream. */
2899 s = msg;
2900
2901 /* Get data. */
2902 STREAM_GETL(s, start);
2903 STREAM_GETL(s, end);
2904
2905 release_table_chunk(client->proto, client->instance, start, end, zvrf);
2906
2907 stream_failure:
2908 return;
2909 }
2910
2911 static void zread_table_manager_request(ZAPI_HANDLER_ARGS)
2912 {
2913 /* to avoid sending other messages like ZEBRA_INTERFACE_UP */
2914 if (hdr->command == ZEBRA_TABLE_MANAGER_CONNECT)
2915 zread_table_manager_connect(client, msg, zvrf_id(zvrf));
2916 else {
2917 /* Sanity: don't allow 'unidentified' requests */
2918 if (!client->proto) {
2919 flog_err(
2920 EC_ZEBRA_TM_ALIENS,
2921 "Got SRv6 request from an unidentified client");
2922 return;
2923 }
2924 if (hdr->command == ZEBRA_GET_TABLE_CHUNK)
2925 zread_get_table_chunk(client, msg, zvrf);
2926 else if (hdr->command == ZEBRA_RELEASE_TABLE_CHUNK)
2927 zread_release_table_chunk(client, msg, zvrf);
2928 }
2929 }
2930
2931 static void zread_srv6_manager_get_locator_chunk(struct zserv *client,
2932 struct stream *msg,
2933 vrf_id_t vrf_id)
2934 {
2935 struct stream *s = msg;
2936 uint16_t len;
2937 char locator_name[SRV6_LOCNAME_SIZE] = {0};
2938
2939 /* Get data. */
2940 STREAM_GETW(s, len);
2941 STREAM_GET(locator_name, s, len);
2942
2943 /* call hook to get a chunk using wrapper */
2944 struct srv6_locator *loc = NULL;
2945 srv6_manager_get_locator_chunk_call(&loc, client, locator_name, vrf_id);
2946
2947 stream_failure:
2948 return;
2949 }
2950
2951 static void zread_srv6_manager_release_locator_chunk(struct zserv *client,
2952 struct stream *msg,
2953 vrf_id_t vrf_id)
2954 {
2955 struct stream *s = msg;
2956 uint16_t len;
2957 char locator_name[SRV6_LOCNAME_SIZE] = {0};
2958
2959 /* Get data. */
2960 STREAM_GETW(s, len);
2961 STREAM_GET(locator_name, s, len);
2962
2963 /* call hook to release a chunk using wrapper */
2964 srv6_manager_release_locator_chunk_call(client, locator_name, vrf_id);
2965
2966 stream_failure:
2967 return;
2968 }
2969
2970 static void zread_srv6_manager_request(ZAPI_HANDLER_ARGS)
2971 {
2972 switch (hdr->command) {
2973 case ZEBRA_SRV6_MANAGER_GET_LOCATOR_CHUNK:
2974 zread_srv6_manager_get_locator_chunk(client, msg,
2975 zvrf_id(zvrf));
2976 break;
2977 case ZEBRA_SRV6_MANAGER_RELEASE_LOCATOR_CHUNK:
2978 zread_srv6_manager_release_locator_chunk(client, msg,
2979 zvrf_id(zvrf));
2980 break;
2981 default:
2982 zlog_err("%s: unknown SRv6 Manager command", __func__);
2983 break;
2984 }
2985 }
2986
2987 static void zread_pseudowire(ZAPI_HANDLER_ARGS)
2988 {
2989 struct stream *s;
2990 char ifname[INTERFACE_NAMSIZ];
2991 ifindex_t ifindex;
2992 int type;
2993 int af;
2994 union g_addr nexthop;
2995 uint32_t local_label;
2996 uint32_t remote_label;
2997 uint8_t flags;
2998 union pw_protocol_fields data;
2999 uint8_t protocol;
3000 struct zebra_pw *pw;
3001
3002 /* Get input stream. */
3003 s = msg;
3004
3005 /* Get data. */
3006 STREAM_GET(ifname, s, INTERFACE_NAMSIZ);
3007 ifname[INTERFACE_NAMSIZ - 1] = '\0';
3008 STREAM_GETL(s, ifindex);
3009 STREAM_GETL(s, type);
3010 STREAM_GETL(s, af);
3011 switch (af) {
3012 case AF_INET:
3013 STREAM_GET(&nexthop.ipv4.s_addr, s, IPV4_MAX_BYTELEN);
3014 break;
3015 case AF_INET6:
3016 STREAM_GET(&nexthop.ipv6, s, 16);
3017 break;
3018 default:
3019 return;
3020 }
3021 STREAM_GETL(s, local_label);
3022 STREAM_GETL(s, remote_label);
3023 STREAM_GETC(s, flags);
3024 STREAM_GET(&data, s, sizeof(data));
3025 protocol = client->proto;
3026
3027 pw = zebra_pw_find(zvrf, ifname);
3028 switch (hdr->command) {
3029 case ZEBRA_PW_ADD:
3030 if (pw) {
3031 flog_warn(EC_ZEBRA_PSEUDOWIRE_EXISTS,
3032 "%s: pseudowire %s already exists [%s]",
3033 __func__, ifname,
3034 zserv_command_string(hdr->command));
3035 return;
3036 }
3037
3038 zebra_pw_add(zvrf, ifname, protocol, client);
3039 break;
3040 case ZEBRA_PW_DELETE:
3041 if (!pw) {
3042 flog_warn(EC_ZEBRA_PSEUDOWIRE_NONEXISTENT,
3043 "%s: pseudowire %s not found [%s]", __func__,
3044 ifname, zserv_command_string(hdr->command));
3045 return;
3046 }
3047
3048 zebra_pw_del(zvrf, pw);
3049 break;
3050 case ZEBRA_PW_SET:
3051 case ZEBRA_PW_UNSET:
3052 if (!pw) {
3053 flog_warn(EC_ZEBRA_PSEUDOWIRE_NONEXISTENT,
3054 "%s: pseudowire %s not found [%s]", __func__,
3055 ifname, zserv_command_string(hdr->command));
3056 return;
3057 }
3058
3059 switch (hdr->command) {
3060 case ZEBRA_PW_SET:
3061 pw->enabled = 1;
3062 break;
3063 case ZEBRA_PW_UNSET:
3064 pw->enabled = 0;
3065 break;
3066 }
3067
3068 zebra_pw_change(pw, ifindex, type, af, &nexthop, local_label,
3069 remote_label, flags, &data);
3070 break;
3071 }
3072
3073 stream_failure:
3074 return;
3075 }
3076
3077 static void zread_interface_set_master(ZAPI_HANDLER_ARGS)
3078 {
3079 struct interface *master;
3080 struct interface *slave;
3081 struct stream *s = msg;
3082 int ifindex;
3083 vrf_id_t vrf_id;
3084
3085 STREAM_GETL(s, vrf_id);
3086 STREAM_GETL(s, ifindex);
3087 master = if_lookup_by_index(ifindex, vrf_id);
3088
3089 STREAM_GETL(s, vrf_id);
3090 STREAM_GETL(s, ifindex);
3091 slave = if_lookup_by_index(ifindex, vrf_id);
3092
3093 if (!master || !slave)
3094 return;
3095
3096 kernel_interface_set_master(master, slave);
3097
3098 stream_failure:
3099 return;
3100 }
3101
3102
3103 static void zread_vrf_label(ZAPI_HANDLER_ARGS)
3104 {
3105 struct interface *ifp;
3106 mpls_label_t nlabel;
3107 afi_t afi;
3108 struct stream *s;
3109 struct zebra_vrf *def_zvrf;
3110 enum lsp_types_t ltype;
3111
3112 s = msg;
3113 STREAM_GETL(s, nlabel);
3114 STREAM_GETC(s, afi);
3115
3116 if (!(IS_VALID_AFI(afi))) {
3117 zlog_warn("Invalid AFI for VRF label: %u", afi);
3118 return;
3119 }
3120
3121 if (nlabel == zvrf->label[afi]) {
3122 /*
3123 * Nothing to do here move along
3124 */
3125 return;
3126 }
3127
3128 STREAM_GETC(s, ltype);
3129
3130 if (zvrf->vrf->vrf_id != VRF_DEFAULT)
3131 ifp = if_lookup_by_name(zvrf->vrf->name, zvrf->vrf->vrf_id);
3132 else
3133 ifp = if_lookup_by_name("lo", VRF_DEFAULT);
3134
3135 if (!ifp) {
3136 zlog_debug("Unable to find specified Interface for %s",
3137 zvrf->vrf->name);
3138 return;
3139 }
3140
3141 def_zvrf = zebra_vrf_lookup_by_id(VRF_DEFAULT);
3142
3143 if (zvrf->label[afi] != MPLS_LABEL_NONE) {
3144 afi_t scrubber;
3145 bool really_remove;
3146
3147 really_remove = true;
3148 for (scrubber = AFI_IP; scrubber < AFI_MAX; scrubber++) {
3149 if (scrubber == afi)
3150 continue;
3151
3152 if (zvrf->label[scrubber] == MPLS_LABEL_NONE)
3153 continue;
3154
3155 if (zvrf->label[afi] == zvrf->label[scrubber]) {
3156 really_remove = false;
3157 break;
3158 }
3159 }
3160
3161 if (really_remove)
3162 mpls_lsp_uninstall(def_zvrf, ltype, zvrf->label[afi],
3163 NEXTHOP_TYPE_IFINDEX, NULL,
3164 ifp->ifindex, false /*backup*/);
3165 }
3166
3167 if (nlabel != MPLS_LABEL_NONE) {
3168 mpls_label_t out_label = MPLS_LABEL_IMPLICIT_NULL;
3169 mpls_lsp_install(def_zvrf, ltype, nlabel, 1, &out_label,
3170 NEXTHOP_TYPE_IFINDEX, NULL, ifp->ifindex);
3171 }
3172
3173 zvrf->label[afi] = nlabel;
3174 zvrf->label_proto[afi] = client->proto;
3175
3176 stream_failure:
3177 return;
3178 }
3179
3180 static inline void zread_rule(ZAPI_HANDLER_ARGS)
3181 {
3182 struct zebra_pbr_rule zpr;
3183 struct stream *s;
3184 uint32_t total, i;
3185 char ifname[INTERFACE_NAMSIZ + 1] = {};
3186
3187 s = msg;
3188 STREAM_GETL(s, total);
3189
3190 for (i = 0; i < total; i++) {
3191 memset(&zpr, 0, sizeof(zpr));
3192
3193 zpr.sock = client->sock;
3194 zpr.rule.vrf_id = hdr->vrf_id;
3195 STREAM_GETL(s, zpr.rule.seq);
3196 STREAM_GETL(s, zpr.rule.priority);
3197 STREAM_GETL(s, zpr.rule.unique);
3198 STREAM_GETC(s, zpr.rule.filter.ip_proto);
3199 STREAM_GETC(s, zpr.rule.filter.src_ip.family);
3200 STREAM_GETC(s, zpr.rule.filter.src_ip.prefixlen);
3201 STREAM_GET(&zpr.rule.filter.src_ip.u.prefix, s,
3202 prefix_blen(&zpr.rule.filter.src_ip));
3203 STREAM_GETW(s, zpr.rule.filter.src_port);
3204 STREAM_GETC(s, zpr.rule.filter.dst_ip.family);
3205 STREAM_GETC(s, zpr.rule.filter.dst_ip.prefixlen);
3206 STREAM_GET(&zpr.rule.filter.dst_ip.u.prefix, s,
3207 prefix_blen(&zpr.rule.filter.dst_ip));
3208 STREAM_GETW(s, zpr.rule.filter.dst_port);
3209 STREAM_GETC(s, zpr.rule.filter.dsfield);
3210 STREAM_GETL(s, zpr.rule.filter.fwmark);
3211
3212 STREAM_GETL(s, zpr.rule.action.queue_id);
3213 STREAM_GETW(s, zpr.rule.action.vlan_id);
3214 STREAM_GETW(s, zpr.rule.action.vlan_flags);
3215 STREAM_GETW(s, zpr.rule.action.pcp);
3216
3217 STREAM_GETL(s, zpr.rule.action.table);
3218 STREAM_GET(ifname, s, INTERFACE_NAMSIZ);
3219
3220 strlcpy(zpr.ifname, ifname, sizeof(zpr.ifname));
3221 strlcpy(zpr.rule.ifname, ifname, sizeof(zpr.rule.ifname));
3222
3223 if (!is_default_prefix(&zpr.rule.filter.src_ip))
3224 zpr.rule.filter.filter_bm |= PBR_FILTER_SRC_IP;
3225
3226 if (!is_default_prefix(&zpr.rule.filter.dst_ip))
3227 zpr.rule.filter.filter_bm |= PBR_FILTER_DST_IP;
3228
3229 if (zpr.rule.filter.src_port)
3230 zpr.rule.filter.filter_bm |= PBR_FILTER_SRC_PORT;
3231
3232 if (zpr.rule.filter.dst_port)
3233 zpr.rule.filter.filter_bm |= PBR_FILTER_DST_PORT;
3234
3235 if (zpr.rule.filter.dsfield)
3236 zpr.rule.filter.filter_bm |= PBR_FILTER_DSFIELD;
3237
3238 if (zpr.rule.filter.ip_proto)
3239 zpr.rule.filter.filter_bm |= PBR_FILTER_IP_PROTOCOL;
3240
3241 if (zpr.rule.filter.fwmark)
3242 zpr.rule.filter.filter_bm |= PBR_FILTER_FWMARK;
3243
3244 if (!(zpr.rule.filter.src_ip.family == AF_INET
3245 || zpr.rule.filter.src_ip.family == AF_INET6)) {
3246 zlog_warn(
3247 "Unsupported PBR source IP family: %s (%hhu)",
3248 family2str(zpr.rule.filter.src_ip.family),
3249 zpr.rule.filter.src_ip.family);
3250 return;
3251 }
3252 if (!(zpr.rule.filter.dst_ip.family == AF_INET
3253 || zpr.rule.filter.dst_ip.family == AF_INET6)) {
3254 zlog_warn(
3255 "Unsupported PBR destination IP family: %s (%hhu)",
3256 family2str(zpr.rule.filter.dst_ip.family),
3257 zpr.rule.filter.dst_ip.family);
3258 return;
3259 }
3260
3261
3262 zpr.vrf_id = zvrf->vrf->vrf_id;
3263 if (hdr->command == ZEBRA_RULE_ADD)
3264 zebra_pbr_add_rule(&zpr);
3265 else
3266 zebra_pbr_del_rule(&zpr);
3267 }
3268
3269 stream_failure:
3270 return;
3271 }
3272
3273 static inline void zread_ipset(ZAPI_HANDLER_ARGS)
3274 {
3275 struct zebra_pbr_ipset zpi;
3276 struct stream *s;
3277 uint32_t total, i;
3278
3279 s = msg;
3280 STREAM_GETL(s, total);
3281
3282 for (i = 0; i < total; i++) {
3283 memset(&zpi, 0, sizeof(zpi));
3284
3285 zpi.sock = client->sock;
3286 zpi.vrf_id = zvrf->vrf->vrf_id;
3287 STREAM_GETL(s, zpi.unique);
3288 STREAM_GETL(s, zpi.type);
3289 STREAM_GETC(s, zpi.family);
3290 STREAM_GET(&zpi.ipset_name, s, ZEBRA_IPSET_NAME_SIZE);
3291
3292 if (hdr->command == ZEBRA_IPSET_CREATE)
3293 zebra_pbr_create_ipset(&zpi);
3294 else
3295 zebra_pbr_destroy_ipset(&zpi);
3296 }
3297
3298 stream_failure:
3299 return;
3300 }
3301
3302 static inline void zread_ipset_entry(ZAPI_HANDLER_ARGS)
3303 {
3304 struct zebra_pbr_ipset_entry zpi;
3305 struct zebra_pbr_ipset ipset;
3306 struct stream *s;
3307 uint32_t total, i;
3308
3309 s = msg;
3310 STREAM_GETL(s, total);
3311
3312 for (i = 0; i < total; i++) {
3313 memset(&zpi, 0, sizeof(zpi));
3314 memset(&ipset, 0, sizeof(ipset));
3315
3316 zpi.sock = client->sock;
3317 STREAM_GETL(s, zpi.unique);
3318 STREAM_GET(&ipset.ipset_name, s, ZEBRA_IPSET_NAME_SIZE);
3319 ipset.ipset_name[ZEBRA_IPSET_NAME_SIZE - 1] = '\0';
3320 STREAM_GETC(s, zpi.src.family);
3321 STREAM_GETC(s, zpi.src.prefixlen);
3322 STREAM_GET(&zpi.src.u.prefix, s, prefix_blen(&zpi.src));
3323 STREAM_GETC(s, zpi.dst.family);
3324 STREAM_GETC(s, zpi.dst.prefixlen);
3325 STREAM_GET(&zpi.dst.u.prefix, s, prefix_blen(&zpi.dst));
3326
3327 STREAM_GETW(s, zpi.src_port_min);
3328 STREAM_GETW(s, zpi.src_port_max);
3329 STREAM_GETW(s, zpi.dst_port_min);
3330 STREAM_GETW(s, zpi.dst_port_max);
3331 STREAM_GETC(s, zpi.proto);
3332 if (!is_default_prefix(&zpi.src))
3333 zpi.filter_bm |= PBR_FILTER_SRC_IP;
3334
3335 if (!is_default_prefix(&zpi.dst))
3336 zpi.filter_bm |= PBR_FILTER_DST_IP;
3337 if (zpi.dst_port_min != 0 || zpi.proto == IPPROTO_ICMP)
3338 zpi.filter_bm |= PBR_FILTER_DST_PORT;
3339 if (zpi.src_port_min != 0 || zpi.proto == IPPROTO_ICMP)
3340 zpi.filter_bm |= PBR_FILTER_SRC_PORT;
3341 if (zpi.dst_port_max != 0)
3342 zpi.filter_bm |= PBR_FILTER_DST_PORT_RANGE;
3343 if (zpi.src_port_max != 0)
3344 zpi.filter_bm |= PBR_FILTER_SRC_PORT_RANGE;
3345 if (zpi.proto != 0)
3346 zpi.filter_bm |= PBR_FILTER_PROTO;
3347
3348 if (!(zpi.dst.family == AF_INET
3349 || zpi.dst.family == AF_INET6)) {
3350 zlog_warn(
3351 "Unsupported PBR destination IP family: %s (%hhu)",
3352 family2str(zpi.dst.family), zpi.dst.family);
3353 goto stream_failure;
3354 }
3355 if (!(zpi.src.family == AF_INET
3356 || zpi.src.family == AF_INET6)) {
3357 zlog_warn(
3358 "Unsupported PBR source IP family: %s (%hhu)",
3359 family2str(zpi.src.family), zpi.src.family);
3360 goto stream_failure;
3361 }
3362
3363 /* calculate backpointer */
3364 zpi.backpointer =
3365 zebra_pbr_lookup_ipset_pername(ipset.ipset_name);
3366
3367 if (!zpi.backpointer) {
3368 zlog_warn("ipset name specified: %s does not exist",
3369 ipset.ipset_name);
3370 goto stream_failure;
3371 }
3372
3373 if (hdr->command == ZEBRA_IPSET_ENTRY_ADD)
3374 zebra_pbr_add_ipset_entry(&zpi);
3375 else
3376 zebra_pbr_del_ipset_entry(&zpi);
3377 }
3378
3379 stream_failure:
3380 return;
3381 }
3382
3383
3384 static inline void zebra_neigh_register(ZAPI_HANDLER_ARGS)
3385 {
3386 afi_t afi;
3387
3388 STREAM_GETW(msg, afi);
3389 if (afi <= AFI_UNSPEC || afi >= AFI_MAX) {
3390 zlog_warn(
3391 "Invalid AFI %u while registering for neighbors notifications",
3392 afi);
3393 goto stream_failure;
3394 }
3395 vrf_bitmap_set(client->nhrp_neighinfo[afi], zvrf_id(zvrf));
3396 stream_failure:
3397 return;
3398 }
3399
3400 static inline void zebra_neigh_unregister(ZAPI_HANDLER_ARGS)
3401 {
3402 afi_t afi;
3403
3404 STREAM_GETW(msg, afi);
3405 if (afi <= AFI_UNSPEC || afi >= AFI_MAX) {
3406 zlog_warn(
3407 "Invalid AFI %u while unregistering from neighbor notifications",
3408 afi);
3409 goto stream_failure;
3410 }
3411 vrf_bitmap_unset(client->nhrp_neighinfo[afi], zvrf_id(zvrf));
3412 stream_failure:
3413 return;
3414 }
3415
3416 static inline void zebra_gre_get(ZAPI_HANDLER_ARGS)
3417 {
3418 struct stream *s;
3419 ifindex_t idx;
3420 struct interface *ifp;
3421 struct zebra_if *zebra_if = NULL;
3422 struct zebra_l2info_gre *gre_info;
3423 struct interface *ifp_link = NULL;
3424 vrf_id_t vrf_id_link = VRF_UNKNOWN;
3425 vrf_id_t vrf_id = zvrf->vrf->vrf_id;
3426
3427 s = msg;
3428 STREAM_GETL(s, idx);
3429 ifp = if_lookup_by_index(idx, vrf_id);
3430
3431 if (ifp)
3432 zebra_if = ifp->info;
3433
3434 s = stream_new(ZEBRA_MAX_PACKET_SIZ);
3435
3436 zclient_create_header(s, ZEBRA_GRE_UPDATE, vrf_id);
3437
3438 if (ifp && IS_ZEBRA_IF_GRE(ifp) && zebra_if) {
3439 gre_info = &zebra_if->l2info.gre;
3440
3441 stream_putl(s, idx);
3442 stream_putl(s, gre_info->ikey);
3443 stream_putl(s, gre_info->ikey);
3444 stream_putl(s, gre_info->ifindex_link);
3445
3446 ifp_link = if_lookup_by_index_per_ns(
3447 zebra_ns_lookup(gre_info->link_nsid),
3448 gre_info->ifindex_link);
3449 if (ifp_link)
3450 vrf_id_link = ifp_link->vrf->vrf_id;
3451 stream_putl(s, vrf_id_link);
3452 stream_putl(s, gre_info->vtep_ip.s_addr);
3453 stream_putl(s, gre_info->vtep_ip_remote.s_addr);
3454 } else {
3455 stream_putl(s, idx);
3456 stream_putl(s, 0);
3457 stream_putl(s, 0);
3458 stream_putl(s, IFINDEX_INTERNAL);
3459 stream_putl(s, VRF_UNKNOWN);
3460 stream_putl(s, 0);
3461 stream_putl(s, 0);
3462 }
3463 /* Write packet size. */
3464 stream_putw_at(s, 0, stream_get_endp(s));
3465 zserv_send_message(client, s);
3466
3467 return;
3468 stream_failure:
3469 return;
3470 }
3471
3472 static inline void zebra_configure_arp(ZAPI_HANDLER_ARGS)
3473 {
3474 struct stream *s;
3475 uint8_t fam;
3476 ifindex_t idx;
3477 struct interface *ifp;
3478
3479 s = msg;
3480 STREAM_GETC(s, fam);
3481 if (fam != AF_INET && fam != AF_INET6)
3482 return;
3483 STREAM_GETL(s, idx);
3484 ifp = if_lookup_by_index_per_ns(zvrf->zns, idx);
3485 if (!ifp)
3486 return;
3487 dplane_neigh_table_update(ifp, fam, 1, 0, 0);
3488 stream_failure:
3489 return;
3490 }
3491
3492 static inline void zebra_neigh_ip_add(ZAPI_HANDLER_ARGS)
3493 {
3494 struct stream *s;
3495 struct zapi_neigh_ip api = {};
3496 int ret;
3497 const struct interface *ifp;
3498
3499 s = msg;
3500 ret = zclient_neigh_ip_decode(s, &api);
3501 if (ret < 0)
3502 return;
3503 ifp = if_lookup_by_index(api.index, zvrf_id(zvrf));
3504 if (!ifp)
3505 return;
3506 dplane_neigh_ip_update(DPLANE_OP_NEIGH_IP_INSTALL, ifp, &api.ip_out,
3507 &api.ip_in, api.ndm_state, client->proto);
3508 }
3509
3510
3511 static inline void zebra_neigh_ip_del(ZAPI_HANDLER_ARGS)
3512 {
3513 struct stream *s;
3514 struct zapi_neigh_ip api = {};
3515 int ret;
3516 struct interface *ifp;
3517
3518 s = msg;
3519 ret = zclient_neigh_ip_decode(s, &api);
3520 if (ret < 0)
3521 return;
3522 ifp = if_lookup_by_index(api.index, zvrf_id(zvrf));
3523 if (!ifp)
3524 return;
3525 dplane_neigh_ip_update(DPLANE_OP_NEIGH_IP_DELETE, ifp, &api.ip_out,
3526 &api.ip_in, api.ndm_state, client->proto);
3527 }
3528
3529
3530 static inline void zread_iptable(ZAPI_HANDLER_ARGS)
3531 {
3532 struct zebra_pbr_iptable *zpi =
3533 XCALLOC(MTYPE_TMP, sizeof(struct zebra_pbr_iptable));
3534 struct stream *s;
3535
3536 s = msg;
3537
3538 zpi->interface_name_list = list_new();
3539 zpi->sock = client->sock;
3540 zpi->vrf_id = zvrf->vrf->vrf_id;
3541 STREAM_GETL(s, zpi->unique);
3542 STREAM_GETL(s, zpi->type);
3543 STREAM_GETL(s, zpi->filter_bm);
3544 STREAM_GETL(s, zpi->action);
3545 STREAM_GETL(s, zpi->fwmark);
3546 STREAM_GET(&zpi->ipset_name, s, ZEBRA_IPSET_NAME_SIZE);
3547 STREAM_GETC(s, zpi->family);
3548 STREAM_GETW(s, zpi->pkt_len_min);
3549 STREAM_GETW(s, zpi->pkt_len_max);
3550 STREAM_GETW(s, zpi->tcp_flags);
3551 STREAM_GETW(s, zpi->tcp_mask_flags);
3552 STREAM_GETC(s, zpi->dscp_value);
3553 STREAM_GETC(s, zpi->fragment);
3554 STREAM_GETC(s, zpi->protocol);
3555 STREAM_GETW(s, zpi->flow_label);
3556 STREAM_GETL(s, zpi->nb_interface);
3557 zebra_pbr_iptable_update_interfacelist(s, zpi);
3558
3559 if (hdr->command == ZEBRA_IPTABLE_ADD)
3560 zebra_pbr_add_iptable(zpi);
3561 else
3562 zebra_pbr_del_iptable(zpi);
3563
3564 stream_failure:
3565 zebra_pbr_iptable_free(zpi);
3566 zpi = NULL;
3567 return;
3568 }
3569
3570 static inline void zread_neigh_discover(ZAPI_HANDLER_ARGS)
3571 {
3572 struct stream *s;
3573 ifindex_t ifindex;
3574 struct interface *ifp;
3575 struct prefix p;
3576 struct ipaddr ip;
3577
3578 s = msg;
3579
3580 STREAM_GETL(s, ifindex);
3581
3582 ifp = if_lookup_by_index_per_ns(zvrf->zns, ifindex);
3583 if (!ifp) {
3584 zlog_debug("Failed to lookup ifindex: %u", ifindex);
3585 return;
3586 }
3587
3588 STREAM_GETC(s, p.family);
3589 STREAM_GETC(s, p.prefixlen);
3590 STREAM_GET(&p.u.prefix, s, prefix_blen(&p));
3591
3592 if (p.family == AF_INET)
3593 SET_IPADDR_V4(&ip);
3594 else
3595 SET_IPADDR_V6(&ip);
3596
3597 memcpy(&ip.ip.addr, &p.u.prefix, prefix_blen(&p));
3598
3599 dplane_neigh_discover(ifp, &ip);
3600
3601 stream_failure:
3602 return;
3603 }
3604
3605 static inline void zebra_gre_source_set(ZAPI_HANDLER_ARGS)
3606 {
3607 struct stream *s;
3608 ifindex_t idx, link_idx;
3609 vrf_id_t link_vrf_id;
3610 struct interface *ifp;
3611 struct interface *ifp_link;
3612 vrf_id_t vrf_id = zvrf->vrf->vrf_id;
3613 struct zebra_if *zif, *gre_zif;
3614 struct zebra_l2info_gre *gre_info;
3615 unsigned int mtu;
3616
3617 s = msg;
3618 STREAM_GETL(s, idx);
3619 ifp = if_lookup_by_index(idx, vrf_id);
3620 STREAM_GETL(s, link_idx);
3621 STREAM_GETL(s, link_vrf_id);
3622 STREAM_GETL(s, mtu);
3623
3624 ifp_link = if_lookup_by_index(link_idx, link_vrf_id);
3625 if (!ifp_link || !ifp) {
3626 zlog_warn("GRE (index %u, VRF %u) or GRE link interface (index %u, VRF %u) not found, when setting GRE params",
3627 idx, vrf_id, link_idx, link_vrf_id);
3628 return;
3629 }
3630
3631 if (!IS_ZEBRA_IF_GRE(ifp))
3632 return;
3633
3634 gre_zif = (struct zebra_if *)ifp->info;
3635 zif = (struct zebra_if *)ifp_link->info;
3636 if (!zif || !gre_zif)
3637 return;
3638
3639 gre_info = &zif->l2info.gre;
3640 if (!gre_info)
3641 return;
3642
3643 if (!mtu)
3644 mtu = ifp->mtu;
3645
3646 /* if gre link already set or mtu did not change, do not set it */
3647 if (gre_zif->link && gre_zif->link == ifp_link && mtu == ifp->mtu)
3648 return;
3649
3650 dplane_gre_set(ifp, ifp_link, mtu, gre_info);
3651
3652 stream_failure:
3653 return;
3654 }
3655
3656 static void zsend_error_msg(struct zserv *client, enum zebra_error_types error,
3657 struct zmsghdr *bad_hdr)
3658 {
3659
3660 struct stream *s = stream_new(ZEBRA_MAX_PACKET_SIZ);
3661
3662 zclient_create_header(s, ZEBRA_ERROR, bad_hdr->vrf_id);
3663
3664 zserv_encode_error(s, error);
3665
3666 client->error_cnt++;
3667 zserv_send_message(client, s);
3668 }
3669
3670 static void zserv_error_no_vrf(ZAPI_HANDLER_ARGS)
3671 {
3672 if (IS_ZEBRA_DEBUG_PACKET && IS_ZEBRA_DEBUG_RECV)
3673 zlog_debug("ZAPI message specifies unknown VRF: %d",
3674 hdr->vrf_id);
3675
3676 zsend_error_msg(client, ZEBRA_NO_VRF, hdr);
3677 }
3678
3679 static void zserv_error_invalid_msg_type(ZAPI_HANDLER_ARGS)
3680 {
3681 zlog_info("Zebra received unknown command %d", hdr->command);
3682
3683 zsend_error_msg(client, ZEBRA_INVALID_MSG_TYPE, hdr);
3684 }
3685
3686 void (*const zserv_handlers[])(ZAPI_HANDLER_ARGS) = {
3687 [ZEBRA_ROUTER_ID_ADD] = zread_router_id_add,
3688 [ZEBRA_ROUTER_ID_DELETE] = zread_router_id_delete,
3689 [ZEBRA_INTERFACE_ADD] = zread_interface_add,
3690 [ZEBRA_INTERFACE_DELETE] = zread_interface_delete,
3691 [ZEBRA_INTERFACE_SET_PROTODOWN] = zread_interface_set_protodown,
3692 [ZEBRA_ROUTE_ADD] = zread_route_add,
3693 [ZEBRA_ROUTE_DELETE] = zread_route_del,
3694 [ZEBRA_REDISTRIBUTE_ADD] = zebra_redistribute_add,
3695 [ZEBRA_REDISTRIBUTE_DELETE] = zebra_redistribute_delete,
3696 [ZEBRA_REDISTRIBUTE_DEFAULT_ADD] = zebra_redistribute_default_add,
3697 [ZEBRA_REDISTRIBUTE_DEFAULT_DELETE] = zebra_redistribute_default_delete,
3698 [ZEBRA_NEXTHOP_LOOKUP_MRIB] = zread_nexthop_lookup_mrib,
3699 [ZEBRA_HELLO] = zread_hello,
3700 [ZEBRA_NEXTHOP_REGISTER] = zread_rnh_register,
3701 [ZEBRA_NEXTHOP_UNREGISTER] = zread_rnh_unregister,
3702 [ZEBRA_BFD_DEST_UPDATE] = zebra_ptm_bfd_dst_register,
3703 [ZEBRA_BFD_DEST_REGISTER] = zebra_ptm_bfd_dst_register,
3704 [ZEBRA_BFD_DEST_DEREGISTER] = zebra_ptm_bfd_dst_deregister,
3705 #if HAVE_BFDD > 0
3706 [ZEBRA_BFD_DEST_REPLAY] = zebra_ptm_bfd_dst_replay,
3707 #endif /* HAVE_BFDD */
3708 [ZEBRA_VRF_UNREGISTER] = zread_vrf_unregister,
3709 [ZEBRA_VRF_LABEL] = zread_vrf_label,
3710 [ZEBRA_BFD_CLIENT_REGISTER] = zebra_ptm_bfd_client_register,
3711 [ZEBRA_INTERFACE_ENABLE_RADV] = zebra_interface_radv_enable,
3712 [ZEBRA_INTERFACE_DISABLE_RADV] = zebra_interface_radv_disable,
3713 [ZEBRA_SR_POLICY_SET] = zread_sr_policy_set,
3714 [ZEBRA_SR_POLICY_DELETE] = zread_sr_policy_delete,
3715 [ZEBRA_MPLS_LABELS_ADD] = zread_mpls_labels_add,
3716 [ZEBRA_MPLS_LABELS_DELETE] = zread_mpls_labels_delete,
3717 [ZEBRA_MPLS_LABELS_REPLACE] = zread_mpls_labels_replace,
3718 [ZEBRA_IPMR_ROUTE_STATS] = zebra_ipmr_route_stats,
3719 [ZEBRA_LABEL_MANAGER_CONNECT] = zread_label_manager_request,
3720 [ZEBRA_LABEL_MANAGER_CONNECT_ASYNC] = zread_label_manager_request,
3721 [ZEBRA_GET_LABEL_CHUNK] = zread_label_manager_request,
3722 [ZEBRA_RELEASE_LABEL_CHUNK] = zread_label_manager_request,
3723 [ZEBRA_FEC_REGISTER] = zread_fec_register,
3724 [ZEBRA_FEC_UNREGISTER] = zread_fec_unregister,
3725 [ZEBRA_ADVERTISE_DEFAULT_GW] = zebra_vxlan_advertise_gw_macip,
3726 [ZEBRA_ADVERTISE_SVI_MACIP] = zebra_vxlan_advertise_svi_macip,
3727 [ZEBRA_ADVERTISE_SUBNET] = zebra_vxlan_advertise_subnet,
3728 [ZEBRA_ADVERTISE_ALL_VNI] = zebra_vxlan_advertise_all_vni,
3729 [ZEBRA_REMOTE_ES_VTEP_ADD] = zebra_evpn_proc_remote_es,
3730 [ZEBRA_REMOTE_ES_VTEP_DEL] = zebra_evpn_proc_remote_es,
3731 [ZEBRA_REMOTE_VTEP_ADD] = zebra_vxlan_remote_vtep_add_zapi,
3732 [ZEBRA_REMOTE_VTEP_DEL] = zebra_vxlan_remote_vtep_del_zapi,
3733 [ZEBRA_REMOTE_MACIP_ADD] = zebra_vxlan_remote_macip_add,
3734 [ZEBRA_REMOTE_MACIP_DEL] = zebra_vxlan_remote_macip_del,
3735 [ZEBRA_DUPLICATE_ADDR_DETECTION] = zebra_vxlan_dup_addr_detection,
3736 [ZEBRA_INTERFACE_SET_MASTER] = zread_interface_set_master,
3737 [ZEBRA_PW_ADD] = zread_pseudowire,
3738 [ZEBRA_PW_DELETE] = zread_pseudowire,
3739 [ZEBRA_PW_SET] = zread_pseudowire,
3740 [ZEBRA_PW_UNSET] = zread_pseudowire,
3741 [ZEBRA_RULE_ADD] = zread_rule,
3742 [ZEBRA_RULE_DELETE] = zread_rule,
3743 [ZEBRA_TABLE_MANAGER_CONNECT] = zread_table_manager_request,
3744 [ZEBRA_GET_TABLE_CHUNK] = zread_table_manager_request,
3745 [ZEBRA_RELEASE_TABLE_CHUNK] = zread_table_manager_request,
3746 [ZEBRA_IPSET_CREATE] = zread_ipset,
3747 [ZEBRA_IPSET_DESTROY] = zread_ipset,
3748 [ZEBRA_IPSET_ENTRY_ADD] = zread_ipset_entry,
3749 [ZEBRA_IPSET_ENTRY_DELETE] = zread_ipset_entry,
3750 [ZEBRA_IPTABLE_ADD] = zread_iptable,
3751 [ZEBRA_IPTABLE_DELETE] = zread_iptable,
3752 [ZEBRA_VXLAN_FLOOD_CONTROL] = zebra_vxlan_flood_control,
3753 [ZEBRA_VXLAN_SG_REPLAY] = zebra_vxlan_sg_replay,
3754 [ZEBRA_MLAG_CLIENT_REGISTER] = zebra_mlag_client_register,
3755 [ZEBRA_MLAG_CLIENT_UNREGISTER] = zebra_mlag_client_unregister,
3756 [ZEBRA_MLAG_FORWARD_MSG] = zebra_mlag_forward_client_msg,
3757 [ZEBRA_SRV6_MANAGER_GET_LOCATOR_CHUNK] = zread_srv6_manager_request,
3758 [ZEBRA_SRV6_MANAGER_RELEASE_LOCATOR_CHUNK] = zread_srv6_manager_request,
3759 [ZEBRA_CLIENT_CAPABILITIES] = zread_client_capabilities,
3760 [ZEBRA_NEIGH_DISCOVER] = zread_neigh_discover,
3761 [ZEBRA_NHG_ADD] = zread_nhg_add,
3762 [ZEBRA_NHG_DEL] = zread_nhg_del,
3763 [ZEBRA_ROUTE_NOTIFY_REQUEST] = zread_route_notify_request,
3764 [ZEBRA_EVPN_REMOTE_NH_ADD] = zebra_evpn_proc_remote_nh,
3765 [ZEBRA_EVPN_REMOTE_NH_DEL] = zebra_evpn_proc_remote_nh,
3766 [ZEBRA_NEIGH_IP_ADD] = zebra_neigh_ip_add,
3767 [ZEBRA_NEIGH_IP_DEL] = zebra_neigh_ip_del,
3768 [ZEBRA_NHRP_NEIGH_REGISTER] = zebra_neigh_register,
3769 [ZEBRA_NHRP_NEIGH_UNREGISTER] = zebra_neigh_unregister,
3770 [ZEBRA_CONFIGURE_ARP] = zebra_configure_arp,
3771 [ZEBRA_GRE_GET] = zebra_gre_get,
3772 [ZEBRA_GRE_SOURCE_SET] = zebra_gre_source_set,
3773 };
3774
3775 /*
3776 * Process a batch of zapi messages.
3777 */
3778 void zserv_handle_commands(struct zserv *client, struct stream_fifo *fifo)
3779 {
3780 struct zmsghdr hdr;
3781 struct zebra_vrf *zvrf;
3782 struct stream *msg;
3783 struct stream_fifo temp_fifo;
3784
3785 stream_fifo_init(&temp_fifo);
3786
3787 while (stream_fifo_head(fifo)) {
3788 msg = stream_fifo_pop(fifo);
3789
3790 if (STREAM_READABLE(msg) > ZEBRA_MAX_PACKET_SIZ) {
3791 if (IS_ZEBRA_DEBUG_PACKET && IS_ZEBRA_DEBUG_RECV)
3792 zlog_debug(
3793 "ZAPI message is %zu bytes long but the maximum packet size is %u; dropping",
3794 STREAM_READABLE(msg),
3795 ZEBRA_MAX_PACKET_SIZ);
3796 goto continue_loop;
3797 }
3798
3799 zapi_parse_header(msg, &hdr);
3800
3801 if (IS_ZEBRA_DEBUG_PACKET && IS_ZEBRA_DEBUG_RECV
3802 && IS_ZEBRA_DEBUG_DETAIL)
3803 zserv_log_message(NULL, msg, &hdr);
3804
3805 hdr.length -= ZEBRA_HEADER_SIZE;
3806
3807 /* Before checking for a handler function, check for
3808 * special messages that are handled in another module;
3809 * we'll treat these as opaque.
3810 */
3811 if (zebra_opaque_handles_msgid(hdr.command)) {
3812 /* Reset message buffer */
3813 stream_set_getp(msg, 0);
3814
3815 stream_fifo_push(&temp_fifo, msg);
3816
3817 /* Continue without freeing the message */
3818 msg = NULL;
3819 goto continue_loop;
3820 }
3821
3822 /* lookup vrf */
3823 zvrf = zebra_vrf_lookup_by_id(hdr.vrf_id);
3824 if (!zvrf) {
3825 zserv_error_no_vrf(client, &hdr, msg, zvrf);
3826 goto continue_loop;
3827 }
3828
3829 if (hdr.command >= array_size(zserv_handlers)
3830 || zserv_handlers[hdr.command] == NULL) {
3831 zserv_error_invalid_msg_type(client, &hdr, msg, zvrf);
3832 goto continue_loop;
3833 }
3834
3835 zserv_handlers[hdr.command](client, &hdr, msg, zvrf);
3836
3837 continue_loop:
3838 stream_free(msg);
3839 }
3840
3841 /* Dispatch any special messages from the temp fifo */
3842 if (stream_fifo_head(&temp_fifo) != NULL)
3843 zebra_opaque_enqueue_batch(&temp_fifo);
3844
3845 stream_fifo_deinit(&temp_fifo);
3846 }
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