]> git.proxmox.com Git - mirror_frr.git/blob - zebra/zapi_msg.c
projects / mirror_frr.git / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
blame | history | raw | HEAD
Merge pull request #12179 from LabNConsulting/working/lb/p2mp-improvements
[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 /* Nexthops */
1878 STREAM_GETW(s, api_nhg->nexthop_num);
1879
1880 if (zserv_nexthop_num_warn(__func__, NULL, api_nhg->nexthop_num))
1881 return -1;
1882
1883 if (api_nhg->nexthop_num <= 0) {
1884 flog_warn(EC_ZEBRA_NEXTHOP_CREATION_FAILED,
1885 "%s: No nexthops sent", __func__);
1886 return -1;
1887 }
1888
1889 for (i = 0; i < api_nhg->nexthop_num; i++) {
1890 znh = &((api_nhg->nexthops)[i]);
1891
1892 if (zapi_nexthop_decode(s, znh, 0, 0) != 0) {
1893 flog_warn(EC_ZEBRA_NEXTHOP_CREATION_FAILED,
1894 "%s: Nexthop creation failed", __func__);
1895 return -1;
1896 }
1897 }
1898
1899 /* Backup Nexthops */
1900 STREAM_GETW(s, api_nhg->backup_nexthop_num);
1901
1902 if (zserv_nexthop_num_warn(__func__, NULL, api_nhg->backup_nexthop_num))
1903 return -1;
1904
1905 for (i = 0; i < api_nhg->backup_nexthop_num; i++) {
1906 znh = &((api_nhg->backup_nexthops)[i]);
1907
1908 if (zapi_nexthop_decode(s, znh, 0, 0) != 0) {
1909 flog_warn(EC_ZEBRA_NEXTHOP_CREATION_FAILED,
1910 "%s: Backup Nexthop creation failed",
1911 __func__);
1912 return -1;
1913 }
1914 }
1915
1916 done:
1917 return 0;
1918
1919 stream_failure:
1920 flog_warn(
1921 EC_ZEBRA_NEXTHOP_CREATION_FAILED,
1922 "%s: Nexthop Group decode failed with some sort of stream read failure",
1923 __func__);
1924 return -1;
1925 }
1926
1927 static void zread_nhg_del(ZAPI_HANDLER_ARGS)
1928 {
1929 struct stream *s;
1930 struct zapi_nhg api_nhg = {};
1931 struct nhg_hash_entry *nhe;
1932
1933 s = msg;
1934 if (zapi_nhg_decode(s, hdr->command, &api_nhg) < 0) {
1935 if (IS_ZEBRA_DEBUG_RECV)
1936 zlog_debug("%s: Unable to decode zapi_nhg sent",
1937 __func__);
1938 return;
1939 }
1940
1941 /*
1942 * Delete the received nhg id
1943 */
1944 nhe = zebra_nhg_proto_del(api_nhg.id, api_nhg.proto);
1945
1946 if (nhe) {
1947 zebra_nhg_decrement_ref(nhe);
1948 zsend_nhg_notify(api_nhg.proto, client->instance,
1949 client->session_id, api_nhg.id,
1950 ZAPI_NHG_REMOVED);
1951 } else
1952 zsend_nhg_notify(api_nhg.proto, client->instance,
1953 client->session_id, api_nhg.id,
1954 ZAPI_NHG_REMOVE_FAIL);
1955 }
1956
1957 static void zread_nhg_add(ZAPI_HANDLER_ARGS)
1958 {
1959 struct stream *s;
1960 struct zapi_nhg api_nhg = {};
1961 struct nexthop_group *nhg = NULL;
1962 struct nhg_backup_info *bnhg = NULL;
1963 struct nhg_hash_entry *nhe;
1964
1965 s = msg;
1966 if (zapi_nhg_decode(s, hdr->command, &api_nhg) < 0) {
1967 if (IS_ZEBRA_DEBUG_RECV)
1968 zlog_debug("%s: Unable to decode zapi_nhg sent",
1969 __func__);
1970 return;
1971 }
1972
1973 if ((!zapi_read_nexthops(client, NULL, api_nhg.nexthops, 0, 0,
1974 api_nhg.nexthop_num,
1975 api_nhg.backup_nexthop_num, &nhg, NULL))
1976 || (!zapi_read_nexthops(client, NULL, api_nhg.backup_nexthops, 0, 0,
1977 api_nhg.backup_nexthop_num,
1978 api_nhg.backup_nexthop_num, NULL, &bnhg))) {
1979
1980 flog_warn(EC_ZEBRA_NEXTHOP_CREATION_FAILED,
1981 "%s: Nexthop Group Creation failed", __func__);
1982
1983 /* Free any local allocations */
1984 nexthop_group_delete(&nhg);
1985 zebra_nhg_backup_free(&bnhg);
1986
1987 return;
1988 }
1989
1990 /* Create a temporary nhe */
1991 nhe = zebra_nhg_alloc();
1992 nhe->id = api_nhg.id;
1993 nhe->type = api_nhg.proto;
1994 nhe->zapi_instance = client->instance;
1995 nhe->zapi_session = client->session_id;
1996
1997 /* Take over the list(s) of nexthops */
1998 nhe->nhg.nexthop = nhg->nexthop;
1999 nhg->nexthop = NULL;
2000
2001 if (bnhg) {
2002 nhe->backup_info = bnhg;
2003 bnhg = NULL;
2004 }
2005
2006 /*
2007 * TODO:
2008 * Assume fully resolved for now and install.
2009 * Resolution is going to need some more work.
2010 */
2011
2012 /* Enqueue to workqueue for processing */
2013 rib_queue_nhe_add(nhe);
2014
2015 /* Free any local allocations */
2016 nexthop_group_delete(&nhg);
2017 zebra_nhg_backup_free(&bnhg);
2018
2019 }
2020
2021 static void zread_route_add(ZAPI_HANDLER_ARGS)
2022 {
2023 struct stream *s;
2024 struct zapi_route api;
2025 afi_t afi;
2026 struct prefix_ipv6 *src_p = NULL;
2027 struct route_entry *re;
2028 struct nexthop_group *ng = NULL;
2029 struct nhg_backup_info *bnhg = NULL;
2030 int ret;
2031 vrf_id_t vrf_id;
2032 struct nhg_hash_entry nhe, *n = NULL;
2033
2034 s = msg;
2035 if (zapi_route_decode(s, &api) < 0) {
2036 if (IS_ZEBRA_DEBUG_RECV)
2037 zlog_debug("%s: Unable to decode zapi_route sent",
2038 __func__);
2039 return;
2040 }
2041
2042 vrf_id = zvrf_id(zvrf);
2043
2044 if (IS_ZEBRA_DEBUG_RECV)
2045 zlog_debug("%s: p=(%u:%u)%pFX, msg flags=0x%x, flags=0x%x",
2046 __func__, vrf_id, api.tableid, &api.prefix,
2047 (int)api.message, api.flags);
2048
2049 /* Allocate new route. */
2050 re = zebra_rib_route_entry_new(
2051 vrf_id, api.type, api.instance, api.flags, api.nhgid,
2052 api.tableid ? api.tableid : zvrf->table_id, api.metric, api.mtu,
2053 api.distance, api.tag);
2054
2055 if (!CHECK_FLAG(api.message, ZAPI_MESSAGE_NHG)
2056 && (!CHECK_FLAG(api.message, ZAPI_MESSAGE_NEXTHOP)
2057 || api.nexthop_num == 0)) {
2058 flog_warn(
2059 EC_ZEBRA_RX_ROUTE_NO_NEXTHOPS,
2060 "%s: received a route without nexthops for prefix %pFX from client %s",
2061 __func__, &api.prefix,
2062 zebra_route_string(client->proto));
2063
2064 XFREE(MTYPE_RE, re);
2065 return;
2066 }
2067
2068 /* Report misuse of the backup flag */
2069 if (CHECK_FLAG(api.message, ZAPI_MESSAGE_BACKUP_NEXTHOPS)
2070 && api.backup_nexthop_num == 0) {
2071 if (IS_ZEBRA_DEBUG_RECV || IS_ZEBRA_DEBUG_EVENT)
2072 zlog_debug(
2073 "%s: client %s: BACKUP flag set but no backup nexthops, prefix %pFX",
2074 __func__, zebra_route_string(client->proto),
2075 &api.prefix);
2076 }
2077
2078 if (!re->nhe_id
2079 && (!zapi_read_nexthops(client, &api.prefix, api.nexthops,
2080 api.flags, api.message, api.nexthop_num,
2081 api.backup_nexthop_num, &ng, NULL)
2082 || !zapi_read_nexthops(client, &api.prefix, api.backup_nexthops,
2083 api.flags, api.message,
2084 api.backup_nexthop_num,
2085 api.backup_nexthop_num, NULL, &bnhg))) {
2086
2087 nexthop_group_delete(&ng);
2088 zebra_nhg_backup_free(&bnhg);
2089 XFREE(MTYPE_RE, re);
2090 return;
2091 }
2092
2093 if (CHECK_FLAG(api.message, ZAPI_MESSAGE_OPAQUE)) {
2094 re->opaque =
2095 XMALLOC(MTYPE_RE_OPAQUE,
2096 sizeof(struct re_opaque) + api.opaque.length);
2097 re->opaque->length = api.opaque.length;
2098 memcpy(re->opaque->data, api.opaque.data, re->opaque->length);
2099 }
2100
2101 afi = family2afi(api.prefix.family);
2102 if (afi != AFI_IP6 && CHECK_FLAG(api.message, ZAPI_MESSAGE_SRCPFX)) {
2103 flog_warn(EC_ZEBRA_RX_SRCDEST_WRONG_AFI,
2104 "%s: Received SRC Prefix but afi is not v6",
2105 __func__);
2106 nexthop_group_delete(&ng);
2107 zebra_nhg_backup_free(&bnhg);
2108 XFREE(MTYPE_RE_OPAQUE, re->opaque);
2109 XFREE(MTYPE_RE, re);
2110 return;
2111 }
2112 if (CHECK_FLAG(api.message, ZAPI_MESSAGE_SRCPFX))
2113 src_p = &api.src_prefix;
2114
2115 if (api.safi != SAFI_UNICAST && api.safi != SAFI_MULTICAST) {
2116 flog_warn(EC_LIB_ZAPI_MISSMATCH,
2117 "%s: Received safi: %d but we can only accept UNICAST or MULTICAST",
2118 __func__, api.safi);
2119 nexthop_group_delete(&ng);
2120 zebra_nhg_backup_free(&bnhg);
2121 XFREE(MTYPE_RE_OPAQUE, re->opaque);
2122 XFREE(MTYPE_RE, re);
2123 return;
2124 }
2125
2126 /*
2127 * If we have an ID, this proto owns the NHG it sent along with the
2128 * route, so we just send the ID into rib code with it.
2129 *
2130 * Havent figured out how to handle backup NHs with this yet, so lets
2131 * keep that separate.
2132 * Include backup info with the route. We use a temporary nhe here;
2133 * if this is a new/unknown nhe, a new copy will be allocated
2134 * and stored.
2135 */
2136 if (!re->nhe_id) {
2137 zebra_nhe_init(&nhe, afi, ng->nexthop);
2138 nhe.nhg.nexthop = ng->nexthop;
2139 nhe.backup_info = bnhg;
2140 n = zebra_nhe_copy(&nhe, 0);
2141 }
2142 ret = rib_add_multipath_nhe(afi, api.safi, &api.prefix, src_p, re, n,
2143 false);
2144
2145 /*
2146 * rib_add_multipath_nhe only fails in a couple spots
2147 * and in those spots we have not freed memory
2148 */
2149 if (ret == -1) {
2150 client->error_cnt++;
2151 XFREE(MTYPE_RE_OPAQUE, re->opaque);
2152 XFREE(MTYPE_RE, re);
2153 }
2154
2155 /* At this point, these allocations are not needed: 're' has been
2156 * retained or freed, and if 're' still exists, it is using
2157 * a reference to a shared group object.
2158 */
2159 nexthop_group_delete(&ng);
2160 if (bnhg)
2161 zebra_nhg_backup_free(&bnhg);
2162
2163 /* Stats */
2164 switch (api.prefix.family) {
2165 case AF_INET:
2166 if (ret == 0)
2167 client->v4_route_add_cnt++;
2168 else if (ret == 1)
2169 client->v4_route_upd8_cnt++;
2170 break;
2171 case AF_INET6:
2172 if (ret == 0)
2173 client->v6_route_add_cnt++;
2174 else if (ret == 1)
2175 client->v6_route_upd8_cnt++;
2176 break;
2177 }
2178 }
2179
2180 void zapi_re_opaque_free(struct re_opaque *opaque)
2181 {
2182 XFREE(MTYPE_RE_OPAQUE, opaque);
2183 }
2184
2185 static void zread_route_del(ZAPI_HANDLER_ARGS)
2186 {
2187 struct stream *s;
2188 struct zapi_route api;
2189 afi_t afi;
2190 struct prefix_ipv6 *src_p = NULL;
2191 uint32_t table_id;
2192
2193 s = msg;
2194 if (zapi_route_decode(s, &api) < 0)
2195 return;
2196
2197 afi = family2afi(api.prefix.family);
2198 if (afi != AFI_IP6 && CHECK_FLAG(api.message, ZAPI_MESSAGE_SRCPFX)) {
2199 flog_warn(EC_ZEBRA_RX_SRCDEST_WRONG_AFI,
2200 "%s: Received a src prefix while afi is not v6",
2201 __func__);
2202 return;
2203 }
2204 if (CHECK_FLAG(api.message, ZAPI_MESSAGE_SRCPFX))
2205 src_p = &api.src_prefix;
2206
2207 if (api.tableid)
2208 table_id = api.tableid;
2209 else
2210 table_id = zvrf->table_id;
2211
2212 if (IS_ZEBRA_DEBUG_RECV)
2213 zlog_debug("%s: p=(%u:%u)%pFX, msg flags=0x%x, flags=0x%x",
2214 __func__, zvrf_id(zvrf), table_id, &api.prefix,
2215 (int)api.message, api.flags);
2216
2217 rib_delete(afi, api.safi, zvrf_id(zvrf), api.type, api.instance,
2218 api.flags, &api.prefix, src_p, NULL, 0, table_id, api.metric,
2219 api.distance, false);
2220
2221 /* Stats */
2222 switch (api.prefix.family) {
2223 case AF_INET:
2224 client->v4_route_del_cnt++;
2225 break;
2226 case AF_INET6:
2227 client->v6_route_del_cnt++;
2228 break;
2229 }
2230 }
2231
2232 /* MRIB Nexthop lookup for IPv4. */
2233 static void zread_nexthop_lookup_mrib(ZAPI_HANDLER_ARGS)
2234 {
2235 struct ipaddr addr;
2236 struct route_entry *re = NULL;
2237
2238 STREAM_GET_IPADDR(msg, &addr);
2239
2240 switch (addr.ipa_type) {
2241 case IPADDR_V4:
2242 re = rib_match_ipv4_multicast(zvrf_id(zvrf), addr.ipaddr_v4,
2243 NULL);
2244 break;
2245 case IPADDR_V6:
2246 re = rib_match_ipv6_multicast(zvrf_id(zvrf), addr.ipaddr_v6,
2247 NULL);
2248 break;
2249 case IPADDR_NONE:
2250 /* ??? */
2251 goto stream_failure;
2252 }
2253
2254 zsend_nexthop_lookup_mrib(client, &addr, re, zvrf);
2255
2256 stream_failure:
2257 return;
2258 }
2259
2260 /* Register zebra server router-id information. Send current router-id */
2261 static void zread_router_id_add(ZAPI_HANDLER_ARGS)
2262 {
2263 afi_t afi;
2264 struct prefix p;
2265 struct prefix zero;
2266
2267 STREAM_GETW(msg, afi);
2268
2269 if (afi <= AFI_UNSPEC || afi >= AFI_MAX) {
2270 zlog_warn(
2271 "Invalid AFI %u while registering for router ID notifications",
2272 afi);
2273 goto stream_failure;
2274 }
2275
2276 /* Router-id information is needed. */
2277 vrf_bitmap_set(client->ridinfo[afi], zvrf_id(zvrf));
2278
2279 router_id_get(afi, &p, zvrf);
2280
2281 /*
2282 * If we have not officially setup a router-id let's not
2283 * tell the upper level protocol about it yet.
2284 */
2285 memset(&zero, 0, sizeof(zero));
2286 if ((p.family == AF_INET && p.u.prefix4.s_addr == INADDR_ANY)
2287 || (p.family == AF_INET6
2288 && memcmp(&p.u.prefix6, &zero.u.prefix6,
2289 sizeof(struct in6_addr))
2290 == 0))
2291 return;
2292
2293 zsend_router_id_update(client, afi, &p, zvrf_id(zvrf));
2294
2295 stream_failure:
2296 return;
2297 }
2298
2299 /* Unregister zebra server router-id information. */
2300 static void zread_router_id_delete(ZAPI_HANDLER_ARGS)
2301 {
2302 afi_t afi;
2303
2304 STREAM_GETW(msg, afi);
2305
2306 if (afi <= AFI_UNSPEC || afi >= AFI_MAX) {
2307 zlog_warn(
2308 "Invalid AFI %u while unregistering from router ID notifications",
2309 afi);
2310 goto stream_failure;
2311 }
2312
2313 vrf_bitmap_unset(client->ridinfo[afi], zvrf_id(zvrf));
2314
2315 stream_failure:
2316 return;
2317 }
2318
2319 static void zsend_capabilities(struct zserv *client, struct zebra_vrf *zvrf)
2320 {
2321 struct stream *s = stream_new(ZEBRA_MAX_PACKET_SIZ);
2322
2323 zclient_create_header(s, ZEBRA_CAPABILITIES, zvrf->vrf->vrf_id);
2324 stream_putl(s, vrf_get_backend());
2325 stream_putc(s, mpls_enabled);
2326 stream_putl(s, zrouter.multipath_num);
2327 stream_putc(s, zebra_mlag_get_role());
2328
2329 stream_putw_at(s, 0, stream_get_endp(s));
2330 zserv_send_message(client, s);
2331 }
2332
2333 void zsend_capabilities_all_clients(void)
2334 {
2335 struct listnode *node, *nnode;
2336 struct zebra_vrf *zvrf;
2337 struct zserv *client;
2338
2339 zvrf = vrf_info_lookup(VRF_DEFAULT);
2340 for (ALL_LIST_ELEMENTS(zrouter.client_list, node, nnode, client)) {
2341 /* Do not send unsolicited messages to synchronous clients. */
2342 if (client->synchronous)
2343 continue;
2344
2345 zsend_capabilities(client, zvrf);
2346 }
2347 }
2348
2349 /* Tie up route-type and client->sock */
2350 static void zread_hello(ZAPI_HANDLER_ARGS)
2351 {
2352 /* type of protocol (lib/zebra.h) */
2353 uint8_t proto;
2354 unsigned short instance;
2355 uint8_t notify;
2356 uint8_t synchronous;
2357 uint32_t session_id;
2358
2359 STREAM_GETC(msg, proto);
2360 STREAM_GETW(msg, instance);
2361 STREAM_GETL(msg, session_id);
2362 STREAM_GETC(msg, notify);
2363 STREAM_GETC(msg, synchronous);
2364 if (notify)
2365 client->notify_owner = true;
2366
2367 if (synchronous)
2368 client->synchronous = true;
2369
2370 /* accept only dynamic routing protocols */
2371 if ((proto < ZEBRA_ROUTE_MAX) && (proto > ZEBRA_ROUTE_CONNECT)) {
2372 zlog_notice(
2373 "client %d says hello and bids fair to announce only %s routes vrf=%u",
2374 client->sock, zebra_route_string(proto),
2375 zvrf->vrf->vrf_id);
2376 if (instance)
2377 zlog_notice("client protocol instance %d", instance);
2378
2379 client->proto = proto;
2380 client->instance = instance;
2381 client->session_id = session_id;
2382
2383 /* Graceful restart processing for client connect */
2384 zebra_gr_client_reconnect(client);
2385 }
2386
2387 if (!client->synchronous) {
2388 zsend_capabilities(client, zvrf);
2389 zebra_vrf_update_all(client);
2390 }
2391 stream_failure:
2392 return;
2393 }
2394
2395 /* Unregister all information in a VRF. */
2396 static void zread_vrf_unregister(ZAPI_HANDLER_ARGS)
2397 {
2398 int i;
2399 afi_t afi;
2400
2401 for (afi = AFI_IP; afi < AFI_MAX; afi++) {
2402 for (i = 0; i < ZEBRA_ROUTE_MAX; i++)
2403 vrf_bitmap_unset(client->redist[afi][i], zvrf_id(zvrf));
2404 vrf_bitmap_unset(client->redist_default[afi], zvrf_id(zvrf));
2405 vrf_bitmap_unset(client->ridinfo[afi], zvrf_id(zvrf));
2406 vrf_bitmap_unset(client->nhrp_neighinfo[afi], zvrf_id(zvrf));
2407 }
2408 }
2409
2410 /*
2411 * Validate incoming zapi mpls lsp / labels message
2412 */
2413 static int zapi_labels_validate(const struct zapi_labels *zl)
2414 {
2415 int ret = -1;
2416 int i, j, idx;
2417 uint32_t bits[8];
2418 uint32_t ival;
2419 const struct zapi_nexthop *znh;
2420
2421 /* Validate backup info: no duplicates for a single primary */
2422 if (zl->backup_nexthop_num == 0) {
2423 ret = 0;
2424 goto done;
2425 }
2426
2427 for (j = 0; j < zl->nexthop_num; j++) {
2428 znh = &zl->nexthops[j];
2429
2430 memset(bits, 0, sizeof(bits));
2431
2432 for (i = 0; i < znh->backup_num; i++) {
2433 idx = znh->backup_idx[i] / 32;
2434
2435 ival = 1 << znh->backup_idx[i] % 32;
2436
2437 /* Check whether value is already used */
2438 if (ival & bits[idx]) {
2439 /* Fail */
2440
2441 if (IS_ZEBRA_DEBUG_RECV)
2442 zlog_debug("%s: invalid zapi mpls message: duplicate backup nexthop index %d",
2443 __func__,
2444 znh->backup_idx[i]);
2445 goto done;
2446 }
2447
2448 /* Mark index value */
2449 bits[idx] |= ival;
2450 }
2451 }
2452
2453 ret = 0;
2454
2455 done:
2456
2457 return ret;
2458 }
2459
2460 /*
2461 * Handle request to create an MPLS LSP.
2462 *
2463 * A single message can fully specify an LSP with multiple nexthops.
2464 *
2465 * When the optional ZAPI_LABELS_FTN flag is set, the specified FEC (route) is
2466 * updated to use the received label(s).
2467 */
2468 static void zread_mpls_labels_add(ZAPI_HANDLER_ARGS)
2469 {
2470 struct stream *s;
2471 struct zapi_labels zl;
2472
2473 /* Get input stream. */
2474 s = msg;
2475 if (zapi_labels_decode(s, &zl) < 0) {
2476 if (IS_ZEBRA_DEBUG_RECV)
2477 zlog_debug("%s: Unable to decode zapi_labels sent",
2478 __func__);
2479 return;
2480 }
2481
2482 if (!mpls_enabled)
2483 return;
2484
2485 /* Validate; will debug on failure */
2486 if (zapi_labels_validate(&zl) < 0)
2487 return;
2488
2489 mpls_zapi_labels_process(true, zvrf, &zl);
2490 }
2491
2492 /*
2493 * Handle request to delete an MPLS LSP.
2494 *
2495 * An LSP is identified by its type and local label. When the received message
2496 * doesn't contain any nexthop, the whole LSP is deleted. Otherwise, only the
2497 * listed LSP nexthops (aka NHLFEs) are deleted.
2498 *
2499 * When the optional ZAPI_LABELS_FTN flag is set, the labels of the specified
2500 * FEC (route) nexthops are deleted.
2501 */
2502 static void zread_mpls_labels_delete(ZAPI_HANDLER_ARGS)
2503 {
2504 struct stream *s;
2505 struct zapi_labels zl;
2506
2507 /* Get input stream. */
2508 s = msg;
2509 if (zapi_labels_decode(s, &zl) < 0) {
2510 if (IS_ZEBRA_DEBUG_RECV)
2511 zlog_debug("%s: Unable to decode zapi_labels sent",
2512 __func__);
2513 return;
2514 }
2515
2516 if (!mpls_enabled)
2517 return;
2518
2519 if (zl.nexthop_num > 0) {
2520 mpls_zapi_labels_process(false /*delete*/, zvrf, &zl);
2521 } else {
2522 mpls_lsp_uninstall_all_vrf(zvrf, zl.type, zl.local_label);
2523
2524 if (CHECK_FLAG(zl.message, ZAPI_LABELS_FTN))
2525 mpls_ftn_uninstall(zvrf, zl.type, &zl.route.prefix,
2526 zl.route.type, zl.route.instance);
2527 }
2528 }
2529
2530 /*
2531 * Handle request to add an MPLS LSP or change an existing one.
2532 *
2533 * A single message can fully specify an LSP with multiple nexthops.
2534 *
2535 * When the optional ZAPI_LABELS_FTN flag is set, the specified FEC (route) is
2536 * updated to use the received label(s).
2537 *
2538 * NOTE: zebra will use route replace semantics (make-before-break) to update
2539 * the LSP in the forwarding plane if that's supported by the underlying
2540 * platform.
2541 */
2542 static void zread_mpls_labels_replace(ZAPI_HANDLER_ARGS)
2543 {
2544 struct stream *s;
2545 struct zapi_labels zl;
2546
2547 /* Get input stream. */
2548 s = msg;
2549 if (zapi_labels_decode(s, &zl) < 0) {
2550 if (IS_ZEBRA_DEBUG_RECV)
2551 zlog_debug("%s: Unable to decode zapi_labels sent",
2552 __func__);
2553 return;
2554 }
2555
2556 if (!mpls_enabled)
2557 return;
2558
2559 /* Validate; will debug on failure */
2560 if (zapi_labels_validate(&zl) < 0)
2561 return;
2562
2563 /* This removes everything, then re-adds from the client's
2564 * zapi message. Since the LSP will be processed later, on this
2565 * this same pthread, all of the changes will 'appear' at once.
2566 */
2567 mpls_lsp_uninstall_all_vrf(zvrf, zl.type, zl.local_label);
2568 if (CHECK_FLAG(zl.message, ZAPI_LABELS_FTN))
2569 mpls_ftn_uninstall(zvrf, zl.type, &zl.route.prefix,
2570 zl.route.type, zl.route.instance);
2571
2572 mpls_zapi_labels_process(true, zvrf, &zl);
2573 }
2574
2575 static void zread_sr_policy_set(ZAPI_HANDLER_ARGS)
2576 {
2577 struct stream *s;
2578 struct zapi_sr_policy zp;
2579 struct zapi_srte_tunnel *zt;
2580 struct zebra_sr_policy *policy;
2581
2582 /* Get input stream. */
2583 s = msg;
2584 if (zapi_sr_policy_decode(s, &zp) < 0) {
2585 if (IS_ZEBRA_DEBUG_RECV)
2586 zlog_debug("%s: Unable to decode zapi_sr_policy sent",
2587 __func__);
2588 return;
2589 }
2590 zt = &zp.segment_list;
2591 if (zt->label_num < 1) {
2592 if (IS_ZEBRA_DEBUG_RECV)
2593 zlog_debug(
2594 "%s: SR-TE tunnel must contain at least one label",
2595 __func__);
2596 return;
2597 }
2598
2599 if (!mpls_enabled)
2600 return;
2601
2602 policy = zebra_sr_policy_find(zp.color, &zp.endpoint);
2603 if (!policy)
2604 policy = zebra_sr_policy_add(zp.color, &zp.endpoint, zp.name);
2605 /* TODO: per-VRF list of SR-TE policies. */
2606 policy->zvrf = zvrf;
2607
2608 zebra_sr_policy_validate(policy, &zp.segment_list);
2609 }
2610
2611 static void zread_sr_policy_delete(ZAPI_HANDLER_ARGS)
2612 {
2613 struct stream *s;
2614 struct zapi_sr_policy zp;
2615 struct zebra_sr_policy *policy;
2616
2617 /* Get input stream. */
2618 s = msg;
2619 if (zapi_sr_policy_decode(s, &zp) < 0) {
2620 if (IS_ZEBRA_DEBUG_RECV)
2621 zlog_debug("%s: Unable to decode zapi_sr_policy sent",
2622 __func__);
2623 return;
2624 }
2625
2626 if (!mpls_enabled)
2627 return;
2628
2629 policy = zebra_sr_policy_find(zp.color, &zp.endpoint);
2630 if (!policy) {
2631 if (IS_ZEBRA_DEBUG_RECV)
2632 zlog_debug("%s: Unable to find SR-TE policy", __func__);
2633 return;
2634 }
2635
2636 zebra_sr_policy_del(policy);
2637 }
2638
2639 int zsend_sr_policy_notify_status(uint32_t color, struct ipaddr *endpoint,
2640 char *name, int status)
2641 {
2642 struct zserv *client;
2643 struct stream *s;
2644
2645 client = zserv_find_client(ZEBRA_ROUTE_SRTE, 0);
2646 if (!client) {
2647 if (IS_ZEBRA_DEBUG_PACKET)
2648 zlog_debug(
2649 "Not notifying pathd about policy %s"
2650 " status change to %d",
2651 name, status);
2652 return 0;
2653 }
2654
2655 if (IS_ZEBRA_DEBUG_PACKET)
2656 zlog_debug(
2657 "Notifying pathd about policy %s status change"
2658 " to %d",
2659 name, status);
2660
2661 s = stream_new(ZEBRA_MAX_PACKET_SIZ);
2662 stream_reset(s);
2663
2664 zclient_create_header(s, ZEBRA_SR_POLICY_NOTIFY_STATUS, VRF_DEFAULT);
2665 stream_putl(s, color);
2666 stream_put_ipaddr(s, endpoint);
2667 stream_write(s, name, SRTE_POLICY_NAME_MAX_LENGTH);
2668 stream_putl(s, status);
2669
2670 stream_putw_at(s, 0, stream_get_endp(s));
2671
2672 return zserv_send_message(client, s);
2673 }
2674
2675 /* Send client close notify to client */
2676 int zsend_client_close_notify(struct zserv *client, struct zserv *closed_client)
2677 {
2678 struct stream *s = stream_new(ZEBRA_MAX_PACKET_SIZ);
2679
2680 zclient_create_header(s, ZEBRA_CLIENT_CLOSE_NOTIFY, VRF_DEFAULT);
2681
2682 stream_putc(s, closed_client->proto);
2683 stream_putw(s, closed_client->instance);
2684 stream_putl(s, closed_client->session_id);
2685
2686 stream_putw_at(s, 0, stream_get_endp(s));
2687
2688 return zserv_send_message(client, s);
2689 }
2690
2691 int zsend_srv6_manager_get_locator_chunk_response(struct zserv *client,
2692 vrf_id_t vrf_id,
2693 struct srv6_locator *loc)
2694 {
2695 struct srv6_locator_chunk chunk = {};
2696 struct stream *s = stream_new(ZEBRA_MAX_PACKET_SIZ);
2697
2698 strlcpy(chunk.locator_name, loc->name, sizeof(chunk.locator_name));
2699 chunk.prefix = loc->prefix;
2700 chunk.block_bits_length = loc->block_bits_length;
2701 chunk.node_bits_length = loc->node_bits_length;
2702 chunk.function_bits_length = loc->function_bits_length;
2703 chunk.argument_bits_length = loc->argument_bits_length;
2704 chunk.keep = 0;
2705 chunk.proto = client->proto;
2706 chunk.instance = client->instance;
2707
2708 zclient_create_header(s, ZEBRA_SRV6_MANAGER_GET_LOCATOR_CHUNK, vrf_id);
2709 zapi_srv6_locator_chunk_encode(s, &chunk);
2710 stream_putw_at(s, 0, stream_get_endp(s));
2711 return zserv_send_message(client, s);
2712 }
2713
2714 /* Send response to a table manager connect request to client */
2715 static void zread_table_manager_connect(struct zserv *client,
2716 struct stream *msg, vrf_id_t vrf_id)
2717 {
2718 struct stream *s;
2719 uint8_t proto;
2720 uint16_t instance;
2721 struct vrf *vrf = vrf_lookup_by_id(vrf_id);
2722
2723 s = msg;
2724
2725 /* Get data. */
2726 STREAM_GETC(s, proto);
2727 STREAM_GETW(s, instance);
2728
2729 /* accept only dynamic routing protocols */
2730 if ((proto >= ZEBRA_ROUTE_MAX) || (proto <= ZEBRA_ROUTE_STATIC)) {
2731 flog_err(EC_ZEBRA_TM_WRONG_PROTO,
2732 "client %d has wrong protocol %s", client->sock,
2733 zebra_route_string(proto));
2734 zsend_table_manager_connect_response(client, vrf_id, 1);
2735 return;
2736 }
2737 zlog_notice("client %d with vrf %s(%u) instance %u connected as %s",
2738 client->sock, VRF_LOGNAME(vrf), vrf_id, instance,
2739 zebra_route_string(proto));
2740 client->proto = proto;
2741 client->instance = instance;
2742
2743 /*
2744 * Release previous labels of same protocol and instance.
2745 * This is done in case it restarted from an unexpected shutdown.
2746 */
2747 release_daemon_table_chunks(client);
2748
2749 zsend_table_manager_connect_response(client, vrf_id, 0);
2750
2751 stream_failure:
2752 return;
2753 }
2754
2755 static void zread_label_manager_connect(struct zserv *client,
2756 struct stream *msg, vrf_id_t vrf_id)
2757 {
2758 struct stream *s;
2759 /* type of protocol (lib/zebra.h) */
2760 uint8_t proto;
2761 unsigned short instance;
2762
2763 /* Get input stream. */
2764 s = msg;
2765
2766 /* Get data. */
2767 STREAM_GETC(s, proto);
2768 STREAM_GETW(s, instance);
2769
2770 /* accept only dynamic routing protocols */
2771 if ((proto >= ZEBRA_ROUTE_MAX) || (proto <= ZEBRA_ROUTE_STATIC)) {
2772 flog_err(EC_ZEBRA_TM_WRONG_PROTO,
2773 "client %d has wrong protocol %s", client->sock,
2774 zebra_route_string(proto));
2775 zsend_label_manager_connect_response(client, vrf_id, 1);
2776 return;
2777 }
2778
2779 /* recall proto and instance in this socket */
2780 client->proto = proto;
2781 client->instance = instance;
2782
2783 /* call hook for connection using wrapper */
2784 lm_client_connect_call(client, vrf_id);
2785
2786 stream_failure:
2787 return;
2788 }
2789
2790 static void zread_get_label_chunk(struct zserv *client, struct stream *msg,
2791 vrf_id_t vrf_id)
2792 {
2793 struct stream *s;
2794 uint8_t keep;
2795 uint32_t size, base;
2796 struct label_manager_chunk *lmc = NULL;
2797 uint8_t proto;
2798 unsigned short instance;
2799
2800 /* Get input stream. */
2801 s = msg;
2802
2803 /* Get data. */
2804 STREAM_GETC(s, proto);
2805 STREAM_GETW(s, instance);
2806 STREAM_GETC(s, keep);
2807 STREAM_GETL(s, size);
2808 STREAM_GETL(s, base);
2809
2810 assert(proto == client->proto && instance == client->instance);
2811
2812 /* call hook to get a chunk using wrapper */
2813 lm_get_chunk_call(&lmc, client, keep, size, base, vrf_id);
2814
2815 stream_failure:
2816 return;
2817 }
2818
2819 static void zread_release_label_chunk(struct zserv *client, struct stream *msg)
2820 {
2821 struct stream *s;
2822 uint32_t start, end;
2823 uint8_t proto;
2824 unsigned short instance;
2825
2826 /* Get input stream. */
2827 s = msg;
2828
2829 /* Get data. */
2830 STREAM_GETC(s, proto);
2831 STREAM_GETW(s, instance);
2832 STREAM_GETL(s, start);
2833 STREAM_GETL(s, end);
2834
2835 assert(proto == client->proto && instance == client->instance);
2836
2837 /* call hook to release a chunk using wrapper */
2838 lm_release_chunk_call(client, start, end);
2839
2840 stream_failure:
2841 return;
2842 }
2843
2844 static void zread_label_manager_request(ZAPI_HANDLER_ARGS)
2845 {
2846 if (hdr->command == ZEBRA_LABEL_MANAGER_CONNECT
2847 || hdr->command == ZEBRA_LABEL_MANAGER_CONNECT_ASYNC)
2848 zread_label_manager_connect(client, msg, zvrf_id(zvrf));
2849 else {
2850 if (hdr->command == ZEBRA_GET_LABEL_CHUNK)
2851 zread_get_label_chunk(client, msg, zvrf_id(zvrf));
2852 else if (hdr->command == ZEBRA_RELEASE_LABEL_CHUNK)
2853 zread_release_label_chunk(client, msg);
2854 }
2855 }
2856
2857 static void zread_get_table_chunk(struct zserv *client, struct stream *msg,
2858 struct zebra_vrf *zvrf)
2859 {
2860 struct stream *s;
2861 uint32_t size;
2862 struct table_manager_chunk *tmc;
2863
2864 /* Get input stream. */
2865 s = msg;
2866
2867 /* Get data. */
2868 STREAM_GETL(s, size);
2869
2870 tmc = assign_table_chunk(client->proto, client->instance, size, zvrf);
2871 if (!tmc)
2872 flog_err(EC_ZEBRA_TM_CANNOT_ASSIGN_CHUNK,
2873 "%s: Unable to assign Table Chunk of size %u",
2874 __func__, size);
2875 else
2876 zlog_debug("Assigned Table Chunk %u - %u", tmc->start,
2877 tmc->end);
2878 /* send response back */
2879 zsend_assign_table_chunk_response(client, zvrf_id(zvrf), tmc);
2880
2881 stream_failure:
2882 return;
2883 }
2884
2885 static void zread_release_table_chunk(struct zserv *client, struct stream *msg,
2886 struct zebra_vrf *zvrf)
2887 {
2888 struct stream *s;
2889 uint32_t start, end;
2890
2891 /* Get input stream. */
2892 s = msg;
2893
2894 /* Get data. */
2895 STREAM_GETL(s, start);
2896 STREAM_GETL(s, end);
2897
2898 release_table_chunk(client->proto, client->instance, start, end, zvrf);
2899
2900 stream_failure:
2901 return;
2902 }
2903
2904 static void zread_table_manager_request(ZAPI_HANDLER_ARGS)
2905 {
2906 /* to avoid sending other messages like ZEBRA_INTERFACE_UP */
2907 if (hdr->command == ZEBRA_TABLE_MANAGER_CONNECT)
2908 zread_table_manager_connect(client, msg, zvrf_id(zvrf));
2909 else {
2910 /* Sanity: don't allow 'unidentified' requests */
2911 if (!client->proto) {
2912 flog_err(
2913 EC_ZEBRA_TM_ALIENS,
2914 "Got SRv6 request from an unidentified client");
2915 return;
2916 }
2917 if (hdr->command == ZEBRA_GET_TABLE_CHUNK)
2918 zread_get_table_chunk(client, msg, zvrf);
2919 else if (hdr->command == ZEBRA_RELEASE_TABLE_CHUNK)
2920 zread_release_table_chunk(client, msg, zvrf);
2921 }
2922 }
2923
2924 static void zread_srv6_manager_get_locator_chunk(struct zserv *client,
2925 struct stream *msg,
2926 vrf_id_t vrf_id)
2927 {
2928 struct stream *s = msg;
2929 uint16_t len;
2930 char locator_name[SRV6_LOCNAME_SIZE] = {0};
2931
2932 /* Get data. */
2933 STREAM_GETW(s, len);
2934 STREAM_GET(locator_name, s, len);
2935
2936 /* call hook to get a chunk using wrapper */
2937 struct srv6_locator *loc = NULL;
2938 srv6_manager_get_locator_chunk_call(&loc, client, locator_name, vrf_id);
2939
2940 stream_failure:
2941 return;
2942 }
2943
2944 static void zread_srv6_manager_release_locator_chunk(struct zserv *client,
2945 struct stream *msg,
2946 vrf_id_t vrf_id)
2947 {
2948 struct stream *s = msg;
2949 uint16_t len;
2950 char locator_name[SRV6_LOCNAME_SIZE] = {0};
2951
2952 /* Get data. */
2953 STREAM_GETW(s, len);
2954 STREAM_GET(locator_name, s, len);
2955
2956 /* call hook to release a chunk using wrapper */
2957 srv6_manager_release_locator_chunk_call(client, locator_name, vrf_id);
2958
2959 stream_failure:
2960 return;
2961 }
2962
2963 static void zread_srv6_manager_request(ZAPI_HANDLER_ARGS)
2964 {
2965 switch (hdr->command) {
2966 case ZEBRA_SRV6_MANAGER_GET_LOCATOR_CHUNK:
2967 zread_srv6_manager_get_locator_chunk(client, msg,
2968 zvrf_id(zvrf));
2969 break;
2970 case ZEBRA_SRV6_MANAGER_RELEASE_LOCATOR_CHUNK:
2971 zread_srv6_manager_release_locator_chunk(client, msg,
2972 zvrf_id(zvrf));
2973 break;
2974 default:
2975 zlog_err("%s: unknown SRv6 Manager command", __func__);
2976 break;
2977 }
2978 }
2979
2980 static void zread_pseudowire(ZAPI_HANDLER_ARGS)
2981 {
2982 struct stream *s;
2983 char ifname[INTERFACE_NAMSIZ];
2984 ifindex_t ifindex;
2985 int type;
2986 int af;
2987 union g_addr nexthop;
2988 uint32_t local_label;
2989 uint32_t remote_label;
2990 uint8_t flags;
2991 union pw_protocol_fields data;
2992 uint8_t protocol;
2993 struct zebra_pw *pw;
2994
2995 /* Get input stream. */
2996 s = msg;
2997
2998 /* Get data. */
2999 STREAM_GET(ifname, s, INTERFACE_NAMSIZ);
3000 ifname[INTERFACE_NAMSIZ - 1] = '\0';
3001 STREAM_GETL(s, ifindex);
3002 STREAM_GETL(s, type);
3003 STREAM_GETL(s, af);
3004 switch (af) {
3005 case AF_INET:
3006 STREAM_GET(&nexthop.ipv4.s_addr, s, IPV4_MAX_BYTELEN);
3007 break;
3008 case AF_INET6:
3009 STREAM_GET(&nexthop.ipv6, s, 16);
3010 break;
3011 default:
3012 return;
3013 }
3014 STREAM_GETL(s, local_label);
3015 STREAM_GETL(s, remote_label);
3016 STREAM_GETC(s, flags);
3017 STREAM_GET(&data, s, sizeof(data));
3018 protocol = client->proto;
3019
3020 pw = zebra_pw_find(zvrf, ifname);
3021 switch (hdr->command) {
3022 case ZEBRA_PW_ADD:
3023 if (pw) {
3024 flog_warn(EC_ZEBRA_PSEUDOWIRE_EXISTS,
3025 "%s: pseudowire %s already exists [%s]",
3026 __func__, ifname,
3027 zserv_command_string(hdr->command));
3028 return;
3029 }
3030
3031 zebra_pw_add(zvrf, ifname, protocol, client);
3032 break;
3033 case ZEBRA_PW_DELETE:
3034 if (!pw) {
3035 flog_warn(EC_ZEBRA_PSEUDOWIRE_NONEXISTENT,
3036 "%s: pseudowire %s not found [%s]", __func__,
3037 ifname, zserv_command_string(hdr->command));
3038 return;
3039 }
3040
3041 zebra_pw_del(zvrf, pw);
3042 break;
3043 case ZEBRA_PW_SET:
3044 case ZEBRA_PW_UNSET:
3045 if (!pw) {
3046 flog_warn(EC_ZEBRA_PSEUDOWIRE_NONEXISTENT,
3047 "%s: pseudowire %s not found [%s]", __func__,
3048 ifname, zserv_command_string(hdr->command));
3049 return;
3050 }
3051
3052 switch (hdr->command) {
3053 case ZEBRA_PW_SET:
3054 pw->enabled = 1;
3055 break;
3056 case ZEBRA_PW_UNSET:
3057 pw->enabled = 0;
3058 break;
3059 }
3060
3061 zebra_pw_change(pw, ifindex, type, af, &nexthop, local_label,
3062 remote_label, flags, &data);
3063 break;
3064 }
3065
3066 stream_failure:
3067 return;
3068 }
3069
3070 static void zread_interface_set_master(ZAPI_HANDLER_ARGS)
3071 {
3072 struct interface *master;
3073 struct interface *slave;
3074 struct stream *s = msg;
3075 int ifindex;
3076 vrf_id_t vrf_id;
3077
3078 STREAM_GETL(s, vrf_id);
3079 STREAM_GETL(s, ifindex);
3080 master = if_lookup_by_index(ifindex, vrf_id);
3081
3082 STREAM_GETL(s, vrf_id);
3083 STREAM_GETL(s, ifindex);
3084 slave = if_lookup_by_index(ifindex, vrf_id);
3085
3086 if (!master || !slave)
3087 return;
3088
3089 kernel_interface_set_master(master, slave);
3090
3091 stream_failure:
3092 return;
3093 }
3094
3095
3096 static void zread_vrf_label(ZAPI_HANDLER_ARGS)
3097 {
3098 struct interface *ifp;
3099 mpls_label_t nlabel;
3100 afi_t afi;
3101 struct stream *s;
3102 struct zebra_vrf *def_zvrf;
3103 enum lsp_types_t ltype;
3104
3105 s = msg;
3106 STREAM_GETL(s, nlabel);
3107 STREAM_GETC(s, afi);
3108
3109 if (!(IS_VALID_AFI(afi))) {
3110 zlog_warn("Invalid AFI for VRF label: %u", afi);
3111 return;
3112 }
3113
3114 if (nlabel == zvrf->label[afi]) {
3115 /*
3116 * Nothing to do here move along
3117 */
3118 return;
3119 }
3120
3121 STREAM_GETC(s, ltype);
3122
3123 if (zvrf->vrf->vrf_id != VRF_DEFAULT)
3124 ifp = if_lookup_by_name(zvrf->vrf->name, zvrf->vrf->vrf_id);
3125 else
3126 ifp = if_lookup_by_name("lo", VRF_DEFAULT);
3127
3128 if (!ifp) {
3129 zlog_debug("Unable to find specified Interface for %s",
3130 zvrf->vrf->name);
3131 return;
3132 }
3133
3134 def_zvrf = zebra_vrf_lookup_by_id(VRF_DEFAULT);
3135
3136 if (zvrf->label[afi] != MPLS_LABEL_NONE) {
3137 afi_t scrubber;
3138 bool really_remove;
3139
3140 really_remove = true;
3141 for (scrubber = AFI_IP; scrubber < AFI_MAX; scrubber++) {
3142 if (scrubber == afi)
3143 continue;
3144
3145 if (zvrf->label[scrubber] == MPLS_LABEL_NONE)
3146 continue;
3147
3148 if (zvrf->label[afi] == zvrf->label[scrubber]) {
3149 really_remove = false;
3150 break;
3151 }
3152 }
3153
3154 if (really_remove)
3155 mpls_lsp_uninstall(def_zvrf, ltype, zvrf->label[afi],
3156 NEXTHOP_TYPE_IFINDEX, NULL,
3157 ifp->ifindex, false /*backup*/);
3158 }
3159
3160 if (nlabel != MPLS_LABEL_NONE) {
3161 mpls_label_t out_label = MPLS_LABEL_IMPLICIT_NULL;
3162 mpls_lsp_install(def_zvrf, ltype, nlabel, 1, &out_label,
3163 NEXTHOP_TYPE_IFINDEX, NULL, ifp->ifindex);
3164 }
3165
3166 zvrf->label[afi] = nlabel;
3167 zvrf->label_proto[afi] = client->proto;
3168
3169 stream_failure:
3170 return;
3171 }
3172
3173 static inline void zread_rule(ZAPI_HANDLER_ARGS)
3174 {
3175 struct zebra_pbr_rule zpr;
3176 struct stream *s;
3177 uint32_t total, i;
3178 char ifname[INTERFACE_NAMSIZ + 1] = {};
3179
3180 s = msg;
3181 STREAM_GETL(s, total);
3182
3183 for (i = 0; i < total; i++) {
3184 memset(&zpr, 0, sizeof(zpr));
3185
3186 zpr.sock = client->sock;
3187 zpr.rule.vrf_id = hdr->vrf_id;
3188 STREAM_GETL(s, zpr.rule.seq);
3189 STREAM_GETL(s, zpr.rule.priority);
3190 STREAM_GETL(s, zpr.rule.unique);
3191 STREAM_GETC(s, zpr.rule.filter.ip_proto);
3192 STREAM_GETC(s, zpr.rule.filter.src_ip.family);
3193 STREAM_GETC(s, zpr.rule.filter.src_ip.prefixlen);
3194 STREAM_GET(&zpr.rule.filter.src_ip.u.prefix, s,
3195 prefix_blen(&zpr.rule.filter.src_ip));
3196 STREAM_GETW(s, zpr.rule.filter.src_port);
3197 STREAM_GETC(s, zpr.rule.filter.dst_ip.family);
3198 STREAM_GETC(s, zpr.rule.filter.dst_ip.prefixlen);
3199 STREAM_GET(&zpr.rule.filter.dst_ip.u.prefix, s,
3200 prefix_blen(&zpr.rule.filter.dst_ip));
3201 STREAM_GETW(s, zpr.rule.filter.dst_port);
3202 STREAM_GETC(s, zpr.rule.filter.dsfield);
3203 STREAM_GETL(s, zpr.rule.filter.fwmark);
3204
3205 STREAM_GETL(s, zpr.rule.action.queue_id);
3206 STREAM_GETW(s, zpr.rule.action.vlan_id);
3207 STREAM_GETW(s, zpr.rule.action.vlan_flags);
3208 STREAM_GETW(s, zpr.rule.action.pcp);
3209
3210 STREAM_GETL(s, zpr.rule.action.table);
3211 STREAM_GET(ifname, s, INTERFACE_NAMSIZ);
3212
3213 strlcpy(zpr.ifname, ifname, sizeof(zpr.ifname));
3214 strlcpy(zpr.rule.ifname, ifname, sizeof(zpr.rule.ifname));
3215
3216 if (!is_default_prefix(&zpr.rule.filter.src_ip))
3217 zpr.rule.filter.filter_bm |= PBR_FILTER_SRC_IP;
3218
3219 if (!is_default_prefix(&zpr.rule.filter.dst_ip))
3220 zpr.rule.filter.filter_bm |= PBR_FILTER_DST_IP;
3221
3222 if (zpr.rule.filter.src_port)
3223 zpr.rule.filter.filter_bm |= PBR_FILTER_SRC_PORT;
3224
3225 if (zpr.rule.filter.dst_port)
3226 zpr.rule.filter.filter_bm |= PBR_FILTER_DST_PORT;
3227
3228 if (zpr.rule.filter.dsfield)
3229 zpr.rule.filter.filter_bm |= PBR_FILTER_DSFIELD;
3230
3231 if (zpr.rule.filter.ip_proto)
3232 zpr.rule.filter.filter_bm |= PBR_FILTER_IP_PROTOCOL;
3233
3234 if (zpr.rule.filter.fwmark)
3235 zpr.rule.filter.filter_bm |= PBR_FILTER_FWMARK;
3236
3237 if (!(zpr.rule.filter.src_ip.family == AF_INET
3238 || zpr.rule.filter.src_ip.family == AF_INET6)) {
3239 zlog_warn(
3240 "Unsupported PBR source IP family: %s (%hhu)",
3241 family2str(zpr.rule.filter.src_ip.family),
3242 zpr.rule.filter.src_ip.family);
3243 return;
3244 }
3245 if (!(zpr.rule.filter.dst_ip.family == AF_INET
3246 || zpr.rule.filter.dst_ip.family == AF_INET6)) {
3247 zlog_warn(
3248 "Unsupported PBR destination IP family: %s (%hhu)",
3249 family2str(zpr.rule.filter.dst_ip.family),
3250 zpr.rule.filter.dst_ip.family);
3251 return;
3252 }
3253
3254
3255 zpr.vrf_id = zvrf->vrf->vrf_id;
3256 if (hdr->command == ZEBRA_RULE_ADD)
3257 zebra_pbr_add_rule(&zpr);
3258 else
3259 zebra_pbr_del_rule(&zpr);
3260 }
3261
3262 stream_failure:
3263 return;
3264 }
3265
3266 static inline void zread_ipset(ZAPI_HANDLER_ARGS)
3267 {
3268 struct zebra_pbr_ipset zpi;
3269 struct stream *s;
3270 uint32_t total, i;
3271
3272 s = msg;
3273 STREAM_GETL(s, total);
3274
3275 for (i = 0; i < total; i++) {
3276 memset(&zpi, 0, sizeof(zpi));
3277
3278 zpi.sock = client->sock;
3279 zpi.vrf_id = zvrf->vrf->vrf_id;
3280 STREAM_GETL(s, zpi.unique);
3281 STREAM_GETL(s, zpi.type);
3282 STREAM_GETC(s, zpi.family);
3283 STREAM_GET(&zpi.ipset_name, s, ZEBRA_IPSET_NAME_SIZE);
3284
3285 if (hdr->command == ZEBRA_IPSET_CREATE)
3286 zebra_pbr_create_ipset(&zpi);
3287 else
3288 zebra_pbr_destroy_ipset(&zpi);
3289 }
3290
3291 stream_failure:
3292 return;
3293 }
3294
3295 static inline void zread_ipset_entry(ZAPI_HANDLER_ARGS)
3296 {
3297 struct zebra_pbr_ipset_entry zpi;
3298 struct zebra_pbr_ipset ipset;
3299 struct stream *s;
3300 uint32_t total, i;
3301
3302 s = msg;
3303 STREAM_GETL(s, total);
3304
3305 for (i = 0; i < total; i++) {
3306 memset(&zpi, 0, sizeof(zpi));
3307 memset(&ipset, 0, sizeof(ipset));
3308
3309 zpi.sock = client->sock;
3310 STREAM_GETL(s, zpi.unique);
3311 STREAM_GET(&ipset.ipset_name, s, ZEBRA_IPSET_NAME_SIZE);
3312 ipset.ipset_name[ZEBRA_IPSET_NAME_SIZE - 1] = '\0';
3313 STREAM_GETC(s, zpi.src.family);
3314 STREAM_GETC(s, zpi.src.prefixlen);
3315 STREAM_GET(&zpi.src.u.prefix, s, prefix_blen(&zpi.src));
3316 STREAM_GETC(s, zpi.dst.family);
3317 STREAM_GETC(s, zpi.dst.prefixlen);
3318 STREAM_GET(&zpi.dst.u.prefix, s, prefix_blen(&zpi.dst));
3319
3320 STREAM_GETW(s, zpi.src_port_min);
3321 STREAM_GETW(s, zpi.src_port_max);
3322 STREAM_GETW(s, zpi.dst_port_min);
3323 STREAM_GETW(s, zpi.dst_port_max);
3324 STREAM_GETC(s, zpi.proto);
3325 if (!is_default_prefix(&zpi.src))
3326 zpi.filter_bm |= PBR_FILTER_SRC_IP;
3327
3328 if (!is_default_prefix(&zpi.dst))
3329 zpi.filter_bm |= PBR_FILTER_DST_IP;
3330 if (zpi.dst_port_min != 0 || zpi.proto == IPPROTO_ICMP)
3331 zpi.filter_bm |= PBR_FILTER_DST_PORT;
3332 if (zpi.src_port_min != 0 || zpi.proto == IPPROTO_ICMP)
3333 zpi.filter_bm |= PBR_FILTER_SRC_PORT;
3334 if (zpi.dst_port_max != 0)
3335 zpi.filter_bm |= PBR_FILTER_DST_PORT_RANGE;
3336 if (zpi.src_port_max != 0)
3337 zpi.filter_bm |= PBR_FILTER_SRC_PORT_RANGE;
3338 if (zpi.proto != 0)
3339 zpi.filter_bm |= PBR_FILTER_PROTO;
3340
3341 if (!(zpi.dst.family == AF_INET
3342 || zpi.dst.family == AF_INET6)) {
3343 zlog_warn(
3344 "Unsupported PBR destination IP family: %s (%hhu)",
3345 family2str(zpi.dst.family), zpi.dst.family);
3346 goto stream_failure;
3347 }
3348 if (!(zpi.src.family == AF_INET
3349 || zpi.src.family == AF_INET6)) {
3350 zlog_warn(
3351 "Unsupported PBR source IP family: %s (%hhu)",
3352 family2str(zpi.src.family), zpi.src.family);
3353 goto stream_failure;
3354 }
3355
3356 /* calculate backpointer */
3357 zpi.backpointer =
3358 zebra_pbr_lookup_ipset_pername(ipset.ipset_name);
3359
3360 if (!zpi.backpointer) {
3361 zlog_warn("ipset name specified: %s does not exist",
3362 ipset.ipset_name);
3363 goto stream_failure;
3364 }
3365
3366 if (hdr->command == ZEBRA_IPSET_ENTRY_ADD)
3367 zebra_pbr_add_ipset_entry(&zpi);
3368 else
3369 zebra_pbr_del_ipset_entry(&zpi);
3370 }
3371
3372 stream_failure:
3373 return;
3374 }
3375
3376
3377 static inline void zebra_neigh_register(ZAPI_HANDLER_ARGS)
3378 {
3379 afi_t afi;
3380
3381 STREAM_GETW(msg, afi);
3382 if (afi <= AFI_UNSPEC || afi >= AFI_MAX) {
3383 zlog_warn(
3384 "Invalid AFI %u while registering for neighbors notifications",
3385 afi);
3386 goto stream_failure;
3387 }
3388 vrf_bitmap_set(client->nhrp_neighinfo[afi], zvrf_id(zvrf));
3389 stream_failure:
3390 return;
3391 }
3392
3393 static inline void zebra_neigh_unregister(ZAPI_HANDLER_ARGS)
3394 {
3395 afi_t afi;
3396
3397 STREAM_GETW(msg, afi);
3398 if (afi <= AFI_UNSPEC || afi >= AFI_MAX) {
3399 zlog_warn(
3400 "Invalid AFI %u while unregistering from neighbor notifications",
3401 afi);
3402 goto stream_failure;
3403 }
3404 vrf_bitmap_unset(client->nhrp_neighinfo[afi], zvrf_id(zvrf));
3405 stream_failure:
3406 return;
3407 }
3408
3409 static inline void zebra_gre_get(ZAPI_HANDLER_ARGS)
3410 {
3411 struct stream *s;
3412 ifindex_t idx;
3413 struct interface *ifp;
3414 struct zebra_if *zebra_if = NULL;
3415 struct zebra_l2info_gre *gre_info;
3416 struct interface *ifp_link = NULL;
3417 vrf_id_t vrf_id_link = VRF_UNKNOWN;
3418 vrf_id_t vrf_id = zvrf->vrf->vrf_id;
3419
3420 s = msg;
3421 STREAM_GETL(s, idx);
3422 ifp = if_lookup_by_index(idx, vrf_id);
3423
3424 if (ifp)
3425 zebra_if = ifp->info;
3426
3427 s = stream_new(ZEBRA_MAX_PACKET_SIZ);
3428
3429 zclient_create_header(s, ZEBRA_GRE_UPDATE, vrf_id);
3430
3431 if (ifp && IS_ZEBRA_IF_GRE(ifp) && zebra_if) {
3432 gre_info = &zebra_if->l2info.gre;
3433
3434 stream_putl(s, idx);
3435 stream_putl(s, gre_info->ikey);
3436 stream_putl(s, gre_info->ikey);
3437 stream_putl(s, gre_info->ifindex_link);
3438
3439 ifp_link = if_lookup_by_index_per_ns(
3440 zebra_ns_lookup(gre_info->link_nsid),
3441 gre_info->ifindex_link);
3442 if (ifp_link)
3443 vrf_id_link = ifp_link->vrf->vrf_id;
3444 stream_putl(s, vrf_id_link);
3445 stream_putl(s, gre_info->vtep_ip.s_addr);
3446 stream_putl(s, gre_info->vtep_ip_remote.s_addr);
3447 } else {
3448 stream_putl(s, idx);
3449 stream_putl(s, 0);
3450 stream_putl(s, 0);
3451 stream_putl(s, IFINDEX_INTERNAL);
3452 stream_putl(s, VRF_UNKNOWN);
3453 stream_putl(s, 0);
3454 stream_putl(s, 0);
3455 }
3456 /* Write packet size. */
3457 stream_putw_at(s, 0, stream_get_endp(s));
3458 zserv_send_message(client, s);
3459
3460 return;
3461 stream_failure:
3462 return;
3463 }
3464
3465 static inline void zebra_configure_arp(ZAPI_HANDLER_ARGS)
3466 {
3467 struct stream *s;
3468 uint8_t fam;
3469 ifindex_t idx;
3470 struct interface *ifp;
3471
3472 s = msg;
3473 STREAM_GETC(s, fam);
3474 if (fam != AF_INET && fam != AF_INET6)
3475 return;
3476 STREAM_GETL(s, idx);
3477 ifp = if_lookup_by_index_per_ns(zvrf->zns, idx);
3478 if (!ifp)
3479 return;
3480 dplane_neigh_table_update(ifp, fam, 1, 0, 0);
3481 stream_failure:
3482 return;
3483 }
3484
3485 static inline void zebra_neigh_ip_add(ZAPI_HANDLER_ARGS)
3486 {
3487 struct stream *s;
3488 struct zapi_neigh_ip api = {};
3489 int ret;
3490 const struct interface *ifp;
3491
3492 s = msg;
3493 ret = zclient_neigh_ip_decode(s, &api);
3494 if (ret < 0)
3495 return;
3496 ifp = if_lookup_by_index(api.index, zvrf_id(zvrf));
3497 if (!ifp)
3498 return;
3499 dplane_neigh_ip_update(DPLANE_OP_NEIGH_IP_INSTALL, ifp, &api.ip_out,
3500 &api.ip_in, api.ndm_state, client->proto);
3501 }
3502
3503
3504 static inline void zebra_neigh_ip_del(ZAPI_HANDLER_ARGS)
3505 {
3506 struct stream *s;
3507 struct zapi_neigh_ip api = {};
3508 int ret;
3509 struct interface *ifp;
3510
3511 s = msg;
3512 ret = zclient_neigh_ip_decode(s, &api);
3513 if (ret < 0)
3514 return;
3515 ifp = if_lookup_by_index(api.index, zvrf_id(zvrf));
3516 if (!ifp)
3517 return;
3518 dplane_neigh_ip_update(DPLANE_OP_NEIGH_IP_DELETE, ifp, &api.ip_out,
3519 &api.ip_in, api.ndm_state, client->proto);
3520 }
3521
3522
3523 static inline void zread_iptable(ZAPI_HANDLER_ARGS)
3524 {
3525 struct zebra_pbr_iptable *zpi =
3526 XCALLOC(MTYPE_TMP, sizeof(struct zebra_pbr_iptable));
3527 struct stream *s;
3528
3529 s = msg;
3530
3531 zpi->interface_name_list = list_new();
3532 zpi->sock = client->sock;
3533 zpi->vrf_id = zvrf->vrf->vrf_id;
3534 STREAM_GETL(s, zpi->unique);
3535 STREAM_GETL(s, zpi->type);
3536 STREAM_GETL(s, zpi->filter_bm);
3537 STREAM_GETL(s, zpi->action);
3538 STREAM_GETL(s, zpi->fwmark);
3539 STREAM_GET(&zpi->ipset_name, s, ZEBRA_IPSET_NAME_SIZE);
3540 STREAM_GETC(s, zpi->family);
3541 STREAM_GETW(s, zpi->pkt_len_min);
3542 STREAM_GETW(s, zpi->pkt_len_max);
3543 STREAM_GETW(s, zpi->tcp_flags);
3544 STREAM_GETW(s, zpi->tcp_mask_flags);
3545 STREAM_GETC(s, zpi->dscp_value);
3546 STREAM_GETC(s, zpi->fragment);
3547 STREAM_GETC(s, zpi->protocol);
3548 STREAM_GETW(s, zpi->flow_label);
3549 STREAM_GETL(s, zpi->nb_interface);
3550 zebra_pbr_iptable_update_interfacelist(s, zpi);
3551
3552 if (hdr->command == ZEBRA_IPTABLE_ADD)
3553 zebra_pbr_add_iptable(zpi);
3554 else
3555 zebra_pbr_del_iptable(zpi);
3556
3557 stream_failure:
3558 zebra_pbr_iptable_free(zpi);
3559 zpi = NULL;
3560 return;
3561 }
3562
3563 static inline void zread_neigh_discover(ZAPI_HANDLER_ARGS)
3564 {
3565 struct stream *s;
3566 ifindex_t ifindex;
3567 struct interface *ifp;
3568 struct prefix p;
3569 struct ipaddr ip;
3570
3571 s = msg;
3572
3573 STREAM_GETL(s, ifindex);
3574
3575 ifp = if_lookup_by_index_per_ns(zvrf->zns, ifindex);
3576 if (!ifp) {
3577 zlog_debug("Failed to lookup ifindex: %u", ifindex);
3578 return;
3579 }
3580
3581 STREAM_GETC(s, p.family);
3582 STREAM_GETC(s, p.prefixlen);
3583 STREAM_GET(&p.u.prefix, s, prefix_blen(&p));
3584
3585 if (p.family == AF_INET)
3586 SET_IPADDR_V4(&ip);
3587 else
3588 SET_IPADDR_V6(&ip);
3589
3590 memcpy(&ip.ip.addr, &p.u.prefix, prefix_blen(&p));
3591
3592 dplane_neigh_discover(ifp, &ip);
3593
3594 stream_failure:
3595 return;
3596 }
3597
3598 static inline void zebra_gre_source_set(ZAPI_HANDLER_ARGS)
3599 {
3600 struct stream *s;
3601 ifindex_t idx, link_idx;
3602 vrf_id_t link_vrf_id;
3603 struct interface *ifp;
3604 struct interface *ifp_link;
3605 vrf_id_t vrf_id = zvrf->vrf->vrf_id;
3606 struct zebra_if *zif, *gre_zif;
3607 struct zebra_l2info_gre *gre_info;
3608 unsigned int mtu;
3609
3610 s = msg;
3611 STREAM_GETL(s, idx);
3612 ifp = if_lookup_by_index(idx, vrf_id);
3613 STREAM_GETL(s, link_idx);
3614 STREAM_GETL(s, link_vrf_id);
3615 STREAM_GETL(s, mtu);
3616
3617 ifp_link = if_lookup_by_index(link_idx, link_vrf_id);
3618 if (!ifp_link || !ifp) {
3619 zlog_warn("GRE (index %u, VRF %u) or GRE link interface (index %u, VRF %u) not found, when setting GRE params",
3620 idx, vrf_id, link_idx, link_vrf_id);
3621 return;
3622 }
3623
3624 if (!IS_ZEBRA_IF_GRE(ifp))
3625 return;
3626
3627 gre_zif = (struct zebra_if *)ifp->info;
3628 zif = (struct zebra_if *)ifp_link->info;
3629 if (!zif || !gre_zif)
3630 return;
3631
3632 gre_info = &zif->l2info.gre;
3633 if (!gre_info)
3634 return;
3635
3636 if (!mtu)
3637 mtu = ifp->mtu;
3638
3639 /* if gre link already set or mtu did not change, do not set it */
3640 if (gre_zif->link && gre_zif->link == ifp_link && mtu == ifp->mtu)
3641 return;
3642
3643 dplane_gre_set(ifp, ifp_link, mtu, gre_info);
3644
3645 stream_failure:
3646 return;
3647 }
3648
3649 static void zsend_error_msg(struct zserv *client, enum zebra_error_types error,
3650 struct zmsghdr *bad_hdr)
3651 {
3652
3653 struct stream *s = stream_new(ZEBRA_MAX_PACKET_SIZ);
3654
3655 zclient_create_header(s, ZEBRA_ERROR, bad_hdr->vrf_id);
3656
3657 zserv_encode_error(s, error);
3658
3659 client->error_cnt++;
3660 zserv_send_message(client, s);
3661 }
3662
3663 static void zserv_error_no_vrf(ZAPI_HANDLER_ARGS)
3664 {
3665 if (IS_ZEBRA_DEBUG_PACKET && IS_ZEBRA_DEBUG_RECV)
3666 zlog_debug("ZAPI message specifies unknown VRF: %d",
3667 hdr->vrf_id);
3668
3669 zsend_error_msg(client, ZEBRA_NO_VRF, hdr);
3670 }
3671
3672 static void zserv_error_invalid_msg_type(ZAPI_HANDLER_ARGS)
3673 {
3674 zlog_info("Zebra received unknown command %d", hdr->command);
3675
3676 zsend_error_msg(client, ZEBRA_INVALID_MSG_TYPE, hdr);
3677 }
3678
3679 void (*const zserv_handlers[])(ZAPI_HANDLER_ARGS) = {
3680 [ZEBRA_ROUTER_ID_ADD] = zread_router_id_add,
3681 [ZEBRA_ROUTER_ID_DELETE] = zread_router_id_delete,
3682 [ZEBRA_INTERFACE_ADD] = zread_interface_add,
3683 [ZEBRA_INTERFACE_DELETE] = zread_interface_delete,
3684 [ZEBRA_INTERFACE_SET_PROTODOWN] = zread_interface_set_protodown,
3685 [ZEBRA_ROUTE_ADD] = zread_route_add,
3686 [ZEBRA_ROUTE_DELETE] = zread_route_del,
3687 [ZEBRA_REDISTRIBUTE_ADD] = zebra_redistribute_add,
3688 [ZEBRA_REDISTRIBUTE_DELETE] = zebra_redistribute_delete,
3689 [ZEBRA_REDISTRIBUTE_DEFAULT_ADD] = zebra_redistribute_default_add,
3690 [ZEBRA_REDISTRIBUTE_DEFAULT_DELETE] = zebra_redistribute_default_delete,
3691 [ZEBRA_NEXTHOP_LOOKUP_MRIB] = zread_nexthop_lookup_mrib,
3692 [ZEBRA_HELLO] = zread_hello,
3693 [ZEBRA_NEXTHOP_REGISTER] = zread_rnh_register,
3694 [ZEBRA_NEXTHOP_UNREGISTER] = zread_rnh_unregister,
3695 [ZEBRA_BFD_DEST_UPDATE] = zebra_ptm_bfd_dst_register,
3696 [ZEBRA_BFD_DEST_REGISTER] = zebra_ptm_bfd_dst_register,
3697 [ZEBRA_BFD_DEST_DEREGISTER] = zebra_ptm_bfd_dst_deregister,
3698 #if HAVE_BFDD > 0
3699 [ZEBRA_BFD_DEST_REPLAY] = zebra_ptm_bfd_dst_replay,
3700 #endif /* HAVE_BFDD */
3701 [ZEBRA_VRF_UNREGISTER] = zread_vrf_unregister,
3702 [ZEBRA_VRF_LABEL] = zread_vrf_label,
3703 [ZEBRA_BFD_CLIENT_REGISTER] = zebra_ptm_bfd_client_register,
3704 [ZEBRA_INTERFACE_ENABLE_RADV] = zebra_interface_radv_enable,
3705 [ZEBRA_INTERFACE_DISABLE_RADV] = zebra_interface_radv_disable,
3706 [ZEBRA_SR_POLICY_SET] = zread_sr_policy_set,
3707 [ZEBRA_SR_POLICY_DELETE] = zread_sr_policy_delete,
3708 [ZEBRA_MPLS_LABELS_ADD] = zread_mpls_labels_add,
3709 [ZEBRA_MPLS_LABELS_DELETE] = zread_mpls_labels_delete,
3710 [ZEBRA_MPLS_LABELS_REPLACE] = zread_mpls_labels_replace,
3711 [ZEBRA_IPMR_ROUTE_STATS] = zebra_ipmr_route_stats,
3712 [ZEBRA_LABEL_MANAGER_CONNECT] = zread_label_manager_request,
3713 [ZEBRA_LABEL_MANAGER_CONNECT_ASYNC] = zread_label_manager_request,
3714 [ZEBRA_GET_LABEL_CHUNK] = zread_label_manager_request,
3715 [ZEBRA_RELEASE_LABEL_CHUNK] = zread_label_manager_request,
3716 [ZEBRA_FEC_REGISTER] = zread_fec_register,
3717 [ZEBRA_FEC_UNREGISTER] = zread_fec_unregister,
3718 [ZEBRA_ADVERTISE_DEFAULT_GW] = zebra_vxlan_advertise_gw_macip,
3719 [ZEBRA_ADVERTISE_SVI_MACIP] = zebra_vxlan_advertise_svi_macip,
3720 [ZEBRA_ADVERTISE_SUBNET] = zebra_vxlan_advertise_subnet,
3721 [ZEBRA_ADVERTISE_ALL_VNI] = zebra_vxlan_advertise_all_vni,
3722 [ZEBRA_REMOTE_ES_VTEP_ADD] = zebra_evpn_proc_remote_es,
3723 [ZEBRA_REMOTE_ES_VTEP_DEL] = zebra_evpn_proc_remote_es,
3724 [ZEBRA_REMOTE_VTEP_ADD] = zebra_vxlan_remote_vtep_add_zapi,
3725 [ZEBRA_REMOTE_VTEP_DEL] = zebra_vxlan_remote_vtep_del_zapi,
3726 [ZEBRA_REMOTE_MACIP_ADD] = zebra_vxlan_remote_macip_add,
3727 [ZEBRA_REMOTE_MACIP_DEL] = zebra_vxlan_remote_macip_del,
3728 [ZEBRA_DUPLICATE_ADDR_DETECTION] = zebra_vxlan_dup_addr_detection,
3729 [ZEBRA_INTERFACE_SET_MASTER] = zread_interface_set_master,
3730 [ZEBRA_PW_ADD] = zread_pseudowire,
3731 [ZEBRA_PW_DELETE] = zread_pseudowire,
3732 [ZEBRA_PW_SET] = zread_pseudowire,
3733 [ZEBRA_PW_UNSET] = zread_pseudowire,
3734 [ZEBRA_RULE_ADD] = zread_rule,
3735 [ZEBRA_RULE_DELETE] = zread_rule,
3736 [ZEBRA_TABLE_MANAGER_CONNECT] = zread_table_manager_request,
3737 [ZEBRA_GET_TABLE_CHUNK] = zread_table_manager_request,
3738 [ZEBRA_RELEASE_TABLE_CHUNK] = zread_table_manager_request,
3739 [ZEBRA_IPSET_CREATE] = zread_ipset,
3740 [ZEBRA_IPSET_DESTROY] = zread_ipset,
3741 [ZEBRA_IPSET_ENTRY_ADD] = zread_ipset_entry,
3742 [ZEBRA_IPSET_ENTRY_DELETE] = zread_ipset_entry,
3743 [ZEBRA_IPTABLE_ADD] = zread_iptable,
3744 [ZEBRA_IPTABLE_DELETE] = zread_iptable,
3745 [ZEBRA_VXLAN_FLOOD_CONTROL] = zebra_vxlan_flood_control,
3746 [ZEBRA_VXLAN_SG_REPLAY] = zebra_vxlan_sg_replay,
3747 [ZEBRA_MLAG_CLIENT_REGISTER] = zebra_mlag_client_register,
3748 [ZEBRA_MLAG_CLIENT_UNREGISTER] = zebra_mlag_client_unregister,
3749 [ZEBRA_MLAG_FORWARD_MSG] = zebra_mlag_forward_client_msg,
3750 [ZEBRA_SRV6_MANAGER_GET_LOCATOR_CHUNK] = zread_srv6_manager_request,
3751 [ZEBRA_SRV6_MANAGER_RELEASE_LOCATOR_CHUNK] = zread_srv6_manager_request,
3752 [ZEBRA_CLIENT_CAPABILITIES] = zread_client_capabilities,
3753 [ZEBRA_NEIGH_DISCOVER] = zread_neigh_discover,
3754 [ZEBRA_NHG_ADD] = zread_nhg_add,
3755 [ZEBRA_NHG_DEL] = zread_nhg_del,
3756 [ZEBRA_ROUTE_NOTIFY_REQUEST] = zread_route_notify_request,
3757 [ZEBRA_EVPN_REMOTE_NH_ADD] = zebra_evpn_proc_remote_nh,
3758 [ZEBRA_EVPN_REMOTE_NH_DEL] = zebra_evpn_proc_remote_nh,
3759 [ZEBRA_NEIGH_IP_ADD] = zebra_neigh_ip_add,
3760 [ZEBRA_NEIGH_IP_DEL] = zebra_neigh_ip_del,
3761 [ZEBRA_NHRP_NEIGH_REGISTER] = zebra_neigh_register,
3762 [ZEBRA_NHRP_NEIGH_UNREGISTER] = zebra_neigh_unregister,
3763 [ZEBRA_CONFIGURE_ARP] = zebra_configure_arp,
3764 [ZEBRA_GRE_GET] = zebra_gre_get,
3765 [ZEBRA_GRE_SOURCE_SET] = zebra_gre_source_set,
3766 };
3767
3768 /*
3769 * Process a batch of zapi messages.
3770 */
3771 void zserv_handle_commands(struct zserv *client, struct stream_fifo *fifo)
3772 {
3773 struct zmsghdr hdr;
3774 struct zebra_vrf *zvrf;
3775 struct stream *msg;
3776 struct stream_fifo temp_fifo;
3777
3778 stream_fifo_init(&temp_fifo);
3779
3780 while (stream_fifo_head(fifo)) {
3781 msg = stream_fifo_pop(fifo);
3782
3783 if (STREAM_READABLE(msg) > ZEBRA_MAX_PACKET_SIZ) {
3784 if (IS_ZEBRA_DEBUG_PACKET && IS_ZEBRA_DEBUG_RECV)
3785 zlog_debug(
3786 "ZAPI message is %zu bytes long but the maximum packet size is %u; dropping",
3787 STREAM_READABLE(msg),
3788 ZEBRA_MAX_PACKET_SIZ);
3789 goto continue_loop;
3790 }
3791
3792 zapi_parse_header(msg, &hdr);
3793
3794 if (IS_ZEBRA_DEBUG_PACKET && IS_ZEBRA_DEBUG_RECV
3795 && IS_ZEBRA_DEBUG_DETAIL)
3796 zserv_log_message(NULL, msg, &hdr);
3797
3798 hdr.length -= ZEBRA_HEADER_SIZE;
3799
3800 /* Before checking for a handler function, check for
3801 * special messages that are handled in another module;
3802 * we'll treat these as opaque.
3803 */
3804 if (zebra_opaque_handles_msgid(hdr.command)) {
3805 /* Reset message buffer */
3806 stream_set_getp(msg, 0);
3807
3808 stream_fifo_push(&temp_fifo, msg);
3809
3810 /* Continue without freeing the message */
3811 msg = NULL;
3812 goto continue_loop;
3813 }
3814
3815 /* lookup vrf */
3816 zvrf = zebra_vrf_lookup_by_id(hdr.vrf_id);
3817 if (!zvrf) {
3818 zserv_error_no_vrf(client, &hdr, msg, zvrf);
3819 goto continue_loop;
3820 }
3821
3822 if (hdr.command >= array_size(zserv_handlers)
3823 || zserv_handlers[hdr.command] == NULL) {
3824 zserv_error_invalid_msg_type(client, &hdr, msg, zvrf);
3825 goto continue_loop;
3826 }
3827
3828 zserv_handlers[hdr.command](client, &hdr, msg, zvrf);
3829
3830 continue_loop:
3831 stream_free(msg);
3832 }
3833
3834 /* Dispatch any special messages from the temp fifo */
3835 if (stream_fifo_head(&temp_fifo) != NULL)
3836 zebra_opaque_enqueue_batch(&temp_fifo);
3837
3838 stream_fifo_deinit(&temp_fifo);
3839 }
FRRouting mirror