1 /* Zebra's client library.
2 * Copyright (C) 1999 Kunihiro Ishiguro
3 * Copyright (C) 2005 Andrew J. Schorr
5 * This file is part of GNU Zebra.
7 * GNU Zebra is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published
9 * by the Free Software Foundation; either version 2, or (at your
10 * option) any later version.
12 * GNU Zebra is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License for more details.
17 * You should have received a copy of the GNU General Public License along
18 * with this program; see the file COPYING; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
40 #include "nexthop_group.h"
41 #include "lib_errors.h"
43 DEFINE_MTYPE_STATIC(LIB
, ZCLIENT
, "Zclient")
44 DEFINE_MTYPE_STATIC(LIB
, REDIST_INST
, "Redistribution instance IDs")
46 /* Zebra client events. */
47 enum event
{ ZCLIENT_SCHEDULE
, ZCLIENT_READ
, ZCLIENT_CONNECT
};
49 /* Prototype for event manager. */
50 static void zclient_event(enum event
, struct zclient
*);
52 struct zclient_options zclient_options_default
= {.receive_notify
= false};
54 struct sockaddr_storage zclient_addr
;
55 socklen_t zclient_addr_len
;
57 /* This file local debug flag. */
58 static int zclient_debug
;
60 /* Allocate zclient structure. */
61 struct zclient
*zclient_new(struct thread_master
*master
,
62 struct zclient_options
*opt
)
64 struct zclient
*zclient
;
66 MAX(ZEBRA_MAX_PACKET_SIZ
, sizeof(struct zapi_route
));
68 zclient
= XCALLOC(MTYPE_ZCLIENT
, sizeof(struct zclient
));
70 zclient
->ibuf
= stream_new(stream_size
);
71 zclient
->obuf
= stream_new(stream_size
);
72 zclient
->wb
= buffer_new(0);
73 zclient
->master
= master
;
75 zclient
->receive_notify
= opt
->receive_notify
;
80 /* This function is only called when exiting, because
81 many parts of the code do not check for I/O errors, so they could
82 reference an invalid pointer if the structure was ever freed.
84 Free zclient structure. */
85 void zclient_free(struct zclient
*zclient
)
88 stream_free(zclient
->ibuf
);
90 stream_free(zclient
->obuf
);
92 buffer_free(zclient
->wb
);
94 XFREE(MTYPE_ZCLIENT
, zclient
);
97 unsigned short *redist_check_instance(struct redist_proto
*red
,
98 unsigned short instance
)
100 struct listnode
*node
;
106 for (ALL_LIST_ELEMENTS_RO(red
->instances
, node
, id
))
113 void redist_add_instance(struct redist_proto
*red
, unsigned short instance
)
120 red
->instances
= list_new();
122 in
= XMALLOC(MTYPE_REDIST_INST
, sizeof(unsigned short));
124 listnode_add(red
->instances
, in
);
127 void redist_del_instance(struct redist_proto
*red
, unsigned short instance
)
131 id
= redist_check_instance(red
, instance
);
135 listnode_delete(red
->instances
, id
);
136 XFREE(MTYPE_REDIST_INST
, id
);
137 if (!red
->instances
->count
) {
139 list_delete(&red
->instances
);
143 /* Stop zebra client services. */
144 void zclient_stop(struct zclient
*zclient
)
150 zlog_debug("zclient stopped");
153 THREAD_OFF(zclient
->t_read
);
154 THREAD_OFF(zclient
->t_connect
);
155 THREAD_OFF(zclient
->t_write
);
158 stream_reset(zclient
->ibuf
);
159 stream_reset(zclient
->obuf
);
161 /* Empty the write buffer. */
162 buffer_reset(zclient
->wb
);
165 if (zclient
->sock
>= 0) {
166 close(zclient
->sock
);
171 for (afi
= AFI_IP
; afi
< AFI_MAX
; afi
++) {
172 for (i
= 0; i
< ZEBRA_ROUTE_MAX
; i
++) {
173 vrf_bitmap_free(zclient
->redist
[afi
][i
]);
174 zclient
->redist
[afi
][i
] = VRF_BITMAP_NULL
;
177 &zclient
->mi_redist
[afi
][zclient
->redist_default
],
180 vrf_bitmap_free(zclient
->default_information
[afi
]);
181 zclient
->default_information
[afi
] = VRF_BITMAP_NULL
;
185 void zclient_reset(struct zclient
*zclient
)
189 zclient_stop(zclient
);
191 for (afi
= AFI_IP
; afi
< AFI_MAX
; afi
++)
193 &zclient
->mi_redist
[afi
][zclient
->redist_default
],
196 zclient_init(zclient
, zclient
->redist_default
, zclient
->instance
,
201 * Connect to zebra daemon.
202 * @param zclient a pointer to zclient structure
203 * @return socket fd just to make sure that connection established
207 int zclient_socket_connect(struct zclient
*zclient
)
212 /* We should think about IPv6 connection. */
213 sock
= socket(zclient_addr
.ss_family
, SOCK_STREAM
, 0);
218 setsockopt_so_sendbuf(sock
, 1048576);
220 /* Connect to zebra. */
221 ret
= connect(sock
, (struct sockaddr
*)&zclient_addr
, zclient_addr_len
);
224 zlog_debug("%s connect failure: %d(%s)",
225 __PRETTY_FUNCTION__
, errno
,
226 safe_strerror(errno
));
231 zclient
->sock
= sock
;
235 static int zclient_failed(struct zclient
*zclient
)
238 zclient_stop(zclient
);
239 zclient_event(ZCLIENT_CONNECT
, zclient
);
243 static int zclient_flush_data(struct thread
*thread
)
245 struct zclient
*zclient
= THREAD_ARG(thread
);
247 zclient
->t_write
= NULL
;
248 if (zclient
->sock
< 0)
250 switch (buffer_flush_available(zclient
->wb
, zclient
->sock
)) {
254 "%s: buffer_flush_available failed on zclient fd %d, closing",
255 __func__
, zclient
->sock
);
256 return zclient_failed(zclient
);
259 zclient
->t_write
= NULL
;
260 thread_add_write(zclient
->master
, zclient_flush_data
, zclient
,
261 zclient
->sock
, &zclient
->t_write
);
269 int zclient_send_message(struct zclient
*zclient
)
271 if (zclient
->sock
< 0)
273 switch (buffer_write(zclient
->wb
, zclient
->sock
,
274 STREAM_DATA(zclient
->obuf
),
275 stream_get_endp(zclient
->obuf
))) {
277 flog_err(EC_LIB_ZAPI_SOCKET
,
278 "%s: buffer_write failed to zclient fd %d, closing",
279 __func__
, zclient
->sock
);
280 return zclient_failed(zclient
);
283 THREAD_OFF(zclient
->t_write
);
286 thread_add_write(zclient
->master
, zclient_flush_data
, zclient
,
287 zclient
->sock
, &zclient
->t_write
);
293 void zclient_create_header(struct stream
*s
, uint16_t command
, vrf_id_t vrf_id
)
295 /* length placeholder, caller can update */
296 stream_putw(s
, ZEBRA_HEADER_SIZE
);
297 stream_putc(s
, ZEBRA_HEADER_MARKER
);
298 stream_putc(s
, ZSERV_VERSION
);
299 stream_putl(s
, vrf_id
);
300 stream_putw(s
, command
);
303 int zclient_read_header(struct stream
*s
, int sock
, uint16_t *size
,
304 uint8_t *marker
, uint8_t *version
, vrf_id_t
*vrf_id
,
307 if (stream_read(s
, sock
, ZEBRA_HEADER_SIZE
) != ZEBRA_HEADER_SIZE
)
310 STREAM_GETW(s
, *size
);
311 *size
-= ZEBRA_HEADER_SIZE
;
312 STREAM_GETC(s
, *marker
);
313 STREAM_GETC(s
, *version
);
314 STREAM_GETL(s
, *vrf_id
);
315 STREAM_GETW(s
, *cmd
);
317 if (*version
!= ZSERV_VERSION
|| *marker
!= ZEBRA_HEADER_MARKER
) {
319 EC_LIB_ZAPI_MISSMATCH
,
320 "%s: socket %d version mismatch, marker %d, version %d",
321 __func__
, sock
, *marker
, *version
);
325 if (*size
&& stream_read(s
, sock
, *size
) != *size
)
332 bool zapi_parse_header(struct stream
*zmsg
, struct zmsghdr
*hdr
)
334 STREAM_GETW(zmsg
, hdr
->length
);
335 STREAM_GETC(zmsg
, hdr
->marker
);
336 STREAM_GETC(zmsg
, hdr
->version
);
337 STREAM_GETL(zmsg
, hdr
->vrf_id
);
338 STREAM_GETW(zmsg
, hdr
->command
);
344 /* Send simple Zebra message. */
345 static int zebra_message_send(struct zclient
*zclient
, int command
,
350 /* Get zclient output buffer. */
354 /* Send very simple command only Zebra message. */
355 zclient_create_header(s
, command
, vrf_id
);
357 return zclient_send_message(zclient
);
360 static int zebra_hello_send(struct zclient
*zclient
)
364 if (zclient
->redist_default
) {
368 /* The VRF ID in the HELLO message is always 0. */
369 zclient_create_header(s
, ZEBRA_HELLO
, VRF_DEFAULT
);
370 stream_putc(s
, zclient
->redist_default
);
371 stream_putw(s
, zclient
->instance
);
372 if (zclient
->receive_notify
)
377 stream_putw_at(s
, 0, stream_get_endp(s
));
378 return zclient_send_message(zclient
);
384 void zclient_send_vrf_label(struct zclient
*zclient
, vrf_id_t vrf_id
, afi_t afi
,
385 mpls_label_t label
, enum lsp_types_t ltype
)
392 zclient_create_header(s
, ZEBRA_VRF_LABEL
, vrf_id
);
393 stream_putl(s
, label
);
395 stream_putc(s
, ltype
);
396 stream_putw_at(s
, 0, stream_get_endp(s
));
397 zclient_send_message(zclient
);
400 /* Send register requests to zebra daemon for the information in a VRF. */
401 void zclient_send_reg_requests(struct zclient
*zclient
, vrf_id_t vrf_id
)
406 /* If not connected to the zebra yet. */
407 if (zclient
->sock
< 0)
411 zlog_debug("%s: send register messages for VRF %u", __func__
,
414 /* We need router-id information. */
415 zebra_message_send(zclient
, ZEBRA_ROUTER_ID_ADD
, vrf_id
);
417 /* We need interface information. */
418 zebra_message_send(zclient
, ZEBRA_INTERFACE_ADD
, vrf_id
);
420 /* Set unwanted redistribute route. */
421 for (afi
= AFI_IP
; afi
< AFI_MAX
; afi
++)
422 vrf_bitmap_set(zclient
->redist
[afi
][zclient
->redist_default
],
425 /* Flush all redistribute request. */
426 if (vrf_id
== VRF_DEFAULT
) {
427 for (afi
= AFI_IP
; afi
< AFI_MAX
; afi
++) {
428 for (i
= 0; i
< ZEBRA_ROUTE_MAX
; i
++) {
429 if (!zclient
->mi_redist
[afi
][i
].enabled
)
432 struct listnode
*node
;
435 for (ALL_LIST_ELEMENTS_RO(
436 zclient
->mi_redist
[afi
][i
]
439 if (!(i
== zclient
->redist_default
440 && *id
== zclient
->instance
))
441 zebra_redistribute_send(
442 ZEBRA_REDISTRIBUTE_ADD
,
443 zclient
, afi
, i
, *id
,
449 /* Resend all redistribute request. */
450 for (afi
= AFI_IP
; afi
< AFI_MAX
; afi
++) {
451 for (i
= 0; i
< ZEBRA_ROUTE_MAX
; i
++)
452 if (i
!= zclient
->redist_default
453 && vrf_bitmap_check(zclient
->redist
[afi
][i
],
455 zebra_redistribute_send(ZEBRA_REDISTRIBUTE_ADD
,
459 /* If default information is needed. */
460 if (vrf_bitmap_check(zclient
->default_information
[afi
], vrf_id
))
461 zebra_redistribute_default_send(
462 ZEBRA_REDISTRIBUTE_DEFAULT_ADD
, zclient
, afi
,
467 /* Send unregister requests to zebra daemon for the information in a VRF. */
468 void zclient_send_dereg_requests(struct zclient
*zclient
, vrf_id_t vrf_id
)
473 /* If not connected to the zebra yet. */
474 if (zclient
->sock
< 0)
478 zlog_debug("%s: send deregister messages for VRF %u", __func__
,
481 /* We need router-id information. */
482 zebra_message_send(zclient
, ZEBRA_ROUTER_ID_DELETE
, vrf_id
);
484 zebra_message_send(zclient
, ZEBRA_INTERFACE_DELETE
, vrf_id
);
486 /* Set unwanted redistribute route. */
487 for (afi
= AFI_IP
; afi
< AFI_MAX
; afi
++)
488 vrf_bitmap_unset(zclient
->redist
[afi
][zclient
->redist_default
],
491 /* Flush all redistribute request. */
492 if (vrf_id
== VRF_DEFAULT
) {
493 for (afi
= AFI_IP
; afi
< AFI_MAX
; afi
++) {
494 for (i
= 0; i
< ZEBRA_ROUTE_MAX
; i
++) {
495 if (!zclient
->mi_redist
[afi
][i
].enabled
)
498 struct listnode
*node
;
501 for (ALL_LIST_ELEMENTS_RO(
502 zclient
->mi_redist
[afi
][i
]
505 if (!(i
== zclient
->redist_default
506 && *id
== zclient
->instance
))
507 zebra_redistribute_send(
508 ZEBRA_REDISTRIBUTE_DELETE
,
509 zclient
, afi
, i
, *id
,
515 /* Flush all redistribute request. */
516 for (afi
= AFI_IP
; afi
< AFI_MAX
; afi
++) {
517 for (i
= 0; i
< ZEBRA_ROUTE_MAX
; i
++)
518 if (i
!= zclient
->redist_default
519 && vrf_bitmap_check(zclient
->redist
[afi
][i
],
521 zebra_redistribute_send(
522 ZEBRA_REDISTRIBUTE_DELETE
, zclient
, afi
,
525 /* If default information is needed. */
526 if (vrf_bitmap_check(zclient
->default_information
[afi
], vrf_id
))
527 zebra_redistribute_default_send(
528 ZEBRA_REDISTRIBUTE_DEFAULT_DELETE
, zclient
, afi
,
533 /* Send request to zebra daemon to start or stop RA. */
534 void zclient_send_interface_radv_req(struct zclient
*zclient
, vrf_id_t vrf_id
,
535 struct interface
*ifp
, int enable
,
540 /* If not connected to the zebra yet. */
541 if (zclient
->sock
< 0)
544 /* Form and send message. */
549 zclient_create_header(s
, ZEBRA_INTERFACE_ENABLE_RADV
, vrf_id
);
551 zclient_create_header(s
, ZEBRA_INTERFACE_DISABLE_RADV
, vrf_id
);
553 stream_putl(s
, ifp
->ifindex
);
554 stream_putl(s
, ra_interval
);
556 stream_putw_at(s
, 0, stream_get_endp(s
));
558 zclient_send_message(zclient
);
561 int zclient_send_interface_protodown(struct zclient
*zclient
, vrf_id_t vrf_id
,
562 struct interface
*ifp
, bool down
)
566 if (zclient
->sock
< 0)
571 zclient_create_header(s
, ZEBRA_INTERFACE_SET_PROTODOWN
, vrf_id
);
572 stream_putl(s
, ifp
->ifindex
);
573 stream_putc(s
, !!down
);
574 stream_putw_at(s
, 0, stream_get_endp(s
));
575 zclient_send_message(zclient
);
580 /* Make connection to zebra daemon. */
581 int zclient_start(struct zclient
*zclient
)
584 zlog_info("zclient_start is called");
586 /* If already connected to the zebra. */
587 if (zclient
->sock
>= 0)
590 /* Check connect thread. */
591 if (zclient
->t_connect
)
594 if (zclient_socket_connect(zclient
) < 0) {
596 zlog_debug("zclient connection fail");
598 zclient_event(ZCLIENT_CONNECT
, zclient
);
602 if (set_nonblocking(zclient
->sock
) < 0)
603 flog_err(EC_LIB_ZAPI_SOCKET
, "%s: set_nonblocking(%d) failed",
604 __func__
, zclient
->sock
);
606 /* Clear fail count. */
609 zlog_debug("zclient connect success with socket [%d]",
612 /* Create read thread. */
613 zclient_event(ZCLIENT_READ
, zclient
);
615 zebra_hello_send(zclient
);
617 zebra_message_send(zclient
, ZEBRA_INTERFACE_ADD
, VRF_DEFAULT
);
619 /* Inform the successful connection. */
620 if (zclient
->zebra_connected
)
621 (*zclient
->zebra_connected
)(zclient
);
626 /* Initialize zebra client. Argument redist_default is unwanted
627 redistribute route type. */
628 void zclient_init(struct zclient
*zclient
, int redist_default
,
629 unsigned short instance
, struct zebra_privs_t
*privs
)
633 /* Set -1 to the default socket value. */
635 zclient
->privs
= privs
;
637 /* Clear redistribution flags. */
638 for (afi
= AFI_IP
; afi
< AFI_MAX
; afi
++)
639 for (i
= 0; i
< ZEBRA_ROUTE_MAX
; i
++)
640 zclient
->redist
[afi
][i
] = vrf_bitmap_init();
642 /* Set unwanted redistribute route. bgpd does not need BGP route
644 zclient
->redist_default
= redist_default
;
645 zclient
->instance
= instance
;
646 /* Pending: make afi(s) an arg. */
647 for (afi
= AFI_IP
; afi
< AFI_MAX
; afi
++) {
648 redist_add_instance(&zclient
->mi_redist
[afi
][redist_default
],
651 /* Set default-information redistribute to zero. */
652 zclient
->default_information
[afi
] = vrf_bitmap_init();
656 zlog_debug("scheduling zclient connection");
658 zclient_event(ZCLIENT_SCHEDULE
, zclient
);
661 /* This function is a wrapper function for calling zclient_start from
662 timer or event thread. */
663 static int zclient_connect(struct thread
*t
)
665 struct zclient
*zclient
;
667 zclient
= THREAD_ARG(t
);
668 zclient
->t_connect
= NULL
;
671 zlog_debug("zclient_connect is called");
673 return zclient_start(zclient
);
676 int zclient_send_rnh(struct zclient
*zclient
, int command
, struct prefix
*p
,
677 bool exact_match
, vrf_id_t vrf_id
)
683 zclient_create_header(s
, command
, vrf_id
);
684 stream_putc(s
, (exact_match
) ? 1 : 0);
686 stream_putw(s
, PREFIX_FAMILY(p
));
687 stream_putc(s
, p
->prefixlen
);
688 switch (PREFIX_FAMILY(p
)) {
690 stream_put_in_addr(s
, &p
->u
.prefix4
);
693 stream_put(s
, &(p
->u
.prefix6
), 16);
698 stream_putw_at(s
, 0, stream_get_endp(s
));
700 return zclient_send_message(zclient
);
704 * "xdr_encode"-like interface that allows daemon (client) to send
705 * a message to zebra server for a route that needs to be
706 * added/deleted to the kernel. Info about the route is specified
707 * by the caller in a struct zapi_route. zapi_route_encode() then writes
708 * the info down the zclient socket using the stream_* functions.
710 * The corresponding read ("xdr_decode") function on the server
711 * side is zapi_route_decode().
713 * 0 1 2 3 4 5 6 7 8 9 A B C D E F 0 1 2 3 4 5 6 7 8 9 A B C D E F
714 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
715 * | Length (2) | Command | Route Type |
716 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
717 * | ZEBRA Flags | Message Flags | Prefix length |
718 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
719 * | Destination IPv4 Prefix for route |
720 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
725 * A number of IPv4 nexthop(s) or nexthop interface index(es) are then
726 * described, as per the Nexthop count. Each nexthop described as:
729 * | Nexthop Type | Set to one of ZEBRA_NEXTHOP_*
730 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
731 * | IPv4 Nexthop address or Interface Index number |
732 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
734 * Alternatively, if the route is a blackhole route, then Nexthop count
735 * is set to 1 and a nexthop of type NEXTHOP_TYPE_BLACKHOLE is the sole
738 * The original struct zapi_route_*() infrastructure was built around
739 * the traditional (32-bit "gate OR ifindex") nexthop data unit.
740 * A special encoding can be used to feed onlink (64-bit "gate AND ifindex")
741 * nexthops into zapi_route_encode() using the same zapi_route structure.
742 * This is done by setting zapi_route fields as follows:
743 * - .message |= ZAPI_MESSAGE_NEXTHOP | ZAPI_MESSAGE_ONLINK
744 * - .nexthop_num == .ifindex_num
745 * - .nexthop and .ifindex are filled with gate and ifindex parts of
746 * each compound nexthop, both in the same order
748 * If ZAPI_MESSAGE_DISTANCE is set, the distance value is written as a 1
751 * If ZAPI_MESSAGE_METRIC is set, the metric value is written as an 8
754 * If ZAPI_MESSAGE_TAG is set, the tag value is written as a 4 byte value
756 * If ZAPI_MESSAGE_MTU is set, the mtu value is written as a 4 byte value
758 * XXX: No attention paid to alignment.
760 int zclient_route_send(uint8_t cmd
, struct zclient
*zclient
,
761 struct zapi_route
*api
)
763 if (zapi_route_encode(cmd
, zclient
->obuf
, api
) < 0)
765 return zclient_send_message(zclient
);
768 int zapi_route_encode(uint8_t cmd
, struct stream
*s
, struct zapi_route
*api
)
770 struct zapi_nexthop
*api_nh
;
775 zclient_create_header(s
, cmd
, api
->vrf_id
);
777 if (api
->type
>= ZEBRA_ROUTE_MAX
) {
778 flog_err(EC_LIB_ZAPI_ENCODE
,
779 "%s: Specified route type (%u) is not a legal value\n",
780 __PRETTY_FUNCTION__
, api
->type
);
783 stream_putc(s
, api
->type
);
785 stream_putw(s
, api
->instance
);
786 stream_putl(s
, api
->flags
);
787 stream_putc(s
, api
->message
);
789 if (api
->safi
< SAFI_UNICAST
|| api
->safi
>= SAFI_MAX
) {
790 flog_err(EC_LIB_ZAPI_ENCODE
,
791 "%s: Specified route SAFI (%u) is not a legal value\n",
792 __PRETTY_FUNCTION__
, api
->safi
);
795 stream_putc(s
, api
->safi
);
797 /* Put prefix information. */
798 stream_putc(s
, api
->prefix
.family
);
799 psize
= PSIZE(api
->prefix
.prefixlen
);
800 stream_putc(s
, api
->prefix
.prefixlen
);
801 stream_write(s
, (uint8_t *)&api
->prefix
.u
.prefix
, psize
);
803 if (CHECK_FLAG(api
->message
, ZAPI_MESSAGE_SRCPFX
)) {
804 psize
= PSIZE(api
->src_prefix
.prefixlen
);
805 stream_putc(s
, api
->src_prefix
.prefixlen
);
806 stream_write(s
, (uint8_t *)&api
->src_prefix
.prefix
, psize
);
810 if (CHECK_FLAG(api
->message
, ZAPI_MESSAGE_NEXTHOP
)) {
811 /* limit the number of nexthops if necessary */
812 if (api
->nexthop_num
> MULTIPATH_NUM
) {
813 char buf
[PREFIX2STR_BUFFER
];
815 prefix2str(&api
->prefix
, buf
, sizeof(buf
));
818 "%s: prefix %s: can't encode %u nexthops (maximum is %u)",
819 __func__
, buf
, api
->nexthop_num
, MULTIPATH_NUM
);
823 stream_putw(s
, api
->nexthop_num
);
825 for (i
= 0; i
< api
->nexthop_num
; i
++) {
826 api_nh
= &api
->nexthops
[i
];
828 stream_putl(s
, api_nh
->vrf_id
);
829 stream_putc(s
, api_nh
->type
);
830 stream_putc(s
, api_nh
->onlink
);
831 switch (api_nh
->type
) {
832 case NEXTHOP_TYPE_BLACKHOLE
:
833 stream_putc(s
, api_nh
->bh_type
);
835 case NEXTHOP_TYPE_IPV4
:
836 stream_put_in_addr(s
, &api_nh
->gate
.ipv4
);
838 case NEXTHOP_TYPE_IPV4_IFINDEX
:
839 stream_put_in_addr(s
, &api_nh
->gate
.ipv4
);
840 stream_putl(s
, api_nh
->ifindex
);
842 case NEXTHOP_TYPE_IFINDEX
:
843 stream_putl(s
, api_nh
->ifindex
);
845 case NEXTHOP_TYPE_IPV6
:
846 stream_write(s
, (uint8_t *)&api_nh
->gate
.ipv6
,
849 case NEXTHOP_TYPE_IPV6_IFINDEX
:
850 stream_write(s
, (uint8_t *)&api_nh
->gate
.ipv6
,
852 stream_putl(s
, api_nh
->ifindex
);
856 /* MPLS labels for BGP-LU or Segment Routing */
857 if (CHECK_FLAG(api
->message
, ZAPI_MESSAGE_LABEL
)) {
858 if (api_nh
->label_num
> MPLS_MAX_LABELS
) {
859 char buf
[PREFIX2STR_BUFFER
];
860 prefix2str(&api
->prefix
, buf
,
862 flog_err(EC_LIB_ZAPI_ENCODE
,
863 "%s: prefix %s: can't encode "
864 "%u labels (maximum is %u)",
871 stream_putc(s
, api_nh
->label_num
);
872 stream_put(s
, &api_nh
->labels
[0],
874 * sizeof(mpls_label_t
));
877 /* Router MAC for EVPN routes. */
878 if (CHECK_FLAG(api
->flags
, ZEBRA_FLAG_EVPN_ROUTE
))
879 stream_put(s
, &(api_nh
->rmac
),
880 sizeof(struct ethaddr
));
885 if (CHECK_FLAG(api
->message
, ZAPI_MESSAGE_DISTANCE
))
886 stream_putc(s
, api
->distance
);
887 if (CHECK_FLAG(api
->message
, ZAPI_MESSAGE_METRIC
))
888 stream_putl(s
, api
->metric
);
889 if (CHECK_FLAG(api
->message
, ZAPI_MESSAGE_TAG
))
890 stream_putl(s
, api
->tag
);
891 if (CHECK_FLAG(api
->message
, ZAPI_MESSAGE_MTU
))
892 stream_putl(s
, api
->mtu
);
893 if (CHECK_FLAG(api
->message
, ZAPI_MESSAGE_TABLEID
))
894 stream_putl(s
, api
->tableid
);
896 /* Put length at the first point of the stream. */
897 stream_putw_at(s
, 0, stream_get_endp(s
));
902 int zapi_route_decode(struct stream
*s
, struct zapi_route
*api
)
904 struct zapi_nexthop
*api_nh
;
907 memset(api
, 0, sizeof(*api
));
909 /* Type, flags, message. */
910 STREAM_GETC(s
, api
->type
);
911 if (api
->type
>= ZEBRA_ROUTE_MAX
) {
912 flog_err(EC_LIB_ZAPI_ENCODE
,
913 "%s: Specified route type: %d is not a legal value\n",
914 __PRETTY_FUNCTION__
, api
->type
);
918 STREAM_GETW(s
, api
->instance
);
919 STREAM_GETL(s
, api
->flags
);
920 STREAM_GETC(s
, api
->message
);
921 STREAM_GETC(s
, api
->safi
);
922 if (api
->safi
< SAFI_UNICAST
|| api
->safi
>= SAFI_MAX
) {
923 flog_err(EC_LIB_ZAPI_ENCODE
,
924 "%s: Specified route SAFI (%u) is not a legal value\n",
925 __PRETTY_FUNCTION__
, api
->safi
);
930 STREAM_GETC(s
, api
->prefix
.family
);
931 STREAM_GETC(s
, api
->prefix
.prefixlen
);
932 switch (api
->prefix
.family
) {
934 if (api
->prefix
.prefixlen
> IPV4_MAX_PREFIXLEN
) {
937 "%s: V4 prefixlen is %d which should not be more than 32",
938 __PRETTY_FUNCTION__
, api
->prefix
.prefixlen
);
943 if (api
->prefix
.prefixlen
> IPV6_MAX_PREFIXLEN
) {
946 "%s: v6 prefixlen is %d which should not be more than 128",
947 __PRETTY_FUNCTION__
, api
->prefix
.prefixlen
);
952 flog_err(EC_LIB_ZAPI_ENCODE
,
953 "%s: Specified family %d is not v4 or v6",
954 __PRETTY_FUNCTION__
, api
->prefix
.family
);
957 STREAM_GET(&api
->prefix
.u
.prefix
, s
, PSIZE(api
->prefix
.prefixlen
));
959 if (CHECK_FLAG(api
->message
, ZAPI_MESSAGE_SRCPFX
)) {
960 api
->src_prefix
.family
= AF_INET6
;
961 STREAM_GETC(s
, api
->src_prefix
.prefixlen
);
962 if (api
->src_prefix
.prefixlen
> IPV6_MAX_PREFIXLEN
) {
965 "%s: SRC Prefix prefixlen received: %d is too large",
966 __PRETTY_FUNCTION__
, api
->src_prefix
.prefixlen
);
969 STREAM_GET(&api
->src_prefix
.prefix
, s
,
970 PSIZE(api
->src_prefix
.prefixlen
));
972 if (api
->prefix
.family
!= AF_INET6
973 || api
->src_prefix
.prefixlen
== 0) {
976 "%s: SRC prefix specified in some manner that makes no sense",
977 __PRETTY_FUNCTION__
);
983 if (CHECK_FLAG(api
->message
, ZAPI_MESSAGE_NEXTHOP
)) {
984 STREAM_GETW(s
, api
->nexthop_num
);
985 if (api
->nexthop_num
> MULTIPATH_NUM
) {
986 flog_err(EC_LIB_ZAPI_ENCODE
,
987 "%s: invalid number of nexthops (%u)",
988 __func__
, api
->nexthop_num
);
992 for (i
= 0; i
< api
->nexthop_num
; i
++) {
993 api_nh
= &api
->nexthops
[i
];
995 STREAM_GETL(s
, api_nh
->vrf_id
);
996 STREAM_GETC(s
, api_nh
->type
);
997 STREAM_GETC(s
, api_nh
->onlink
);
998 switch (api_nh
->type
) {
999 case NEXTHOP_TYPE_BLACKHOLE
:
1000 STREAM_GETC(s
, api_nh
->bh_type
);
1002 case NEXTHOP_TYPE_IPV4
:
1003 STREAM_GET(&api_nh
->gate
.ipv4
.s_addr
, s
,
1006 case NEXTHOP_TYPE_IPV4_IFINDEX
:
1007 STREAM_GET(&api_nh
->gate
.ipv4
.s_addr
, s
,
1009 STREAM_GETL(s
, api_nh
->ifindex
);
1011 case NEXTHOP_TYPE_IFINDEX
:
1012 STREAM_GETL(s
, api_nh
->ifindex
);
1014 case NEXTHOP_TYPE_IPV6
:
1015 STREAM_GET(&api_nh
->gate
.ipv6
, s
, 16);
1017 case NEXTHOP_TYPE_IPV6_IFINDEX
:
1018 STREAM_GET(&api_nh
->gate
.ipv6
, s
, 16);
1019 STREAM_GETL(s
, api_nh
->ifindex
);
1023 /* MPLS labels for BGP-LU or Segment Routing */
1024 if (CHECK_FLAG(api
->message
, ZAPI_MESSAGE_LABEL
)) {
1025 STREAM_GETC(s
, api_nh
->label_num
);
1027 if (api_nh
->label_num
> MPLS_MAX_LABELS
) {
1030 "%s: invalid number of MPLS labels (%u)",
1031 __func__
, api_nh
->label_num
);
1035 STREAM_GET(&api_nh
->labels
[0], s
,
1037 * sizeof(mpls_label_t
));
1040 /* Router MAC for EVPN routes. */
1041 if (CHECK_FLAG(api
->flags
, ZEBRA_FLAG_EVPN_ROUTE
))
1042 stream_get(&(api_nh
->rmac
), s
,
1043 sizeof(struct ethaddr
));
1048 if (CHECK_FLAG(api
->message
, ZAPI_MESSAGE_DISTANCE
))
1049 STREAM_GETC(s
, api
->distance
);
1050 if (CHECK_FLAG(api
->message
, ZAPI_MESSAGE_METRIC
))
1051 STREAM_GETL(s
, api
->metric
);
1052 if (CHECK_FLAG(api
->message
, ZAPI_MESSAGE_TAG
))
1053 STREAM_GETL(s
, api
->tag
);
1054 if (CHECK_FLAG(api
->message
, ZAPI_MESSAGE_MTU
))
1055 STREAM_GETL(s
, api
->mtu
);
1056 if (CHECK_FLAG(api
->message
, ZAPI_MESSAGE_TABLEID
))
1057 STREAM_GETL(s
, api
->tableid
);
1063 static void zapi_encode_prefix(struct stream
*s
, struct prefix
*p
,
1069 memset(&any
, 0, sizeof(any
));
1070 any
.family
= family
;
1074 stream_putc(s
, p
->family
);
1075 stream_putc(s
, p
->prefixlen
);
1076 stream_put(s
, &p
->u
.prefix
, prefix_blen(p
));
1079 int zapi_pbr_rule_encode(uint8_t cmd
, struct stream
*s
, struct pbr_rule
*zrule
)
1082 zclient_create_header(s
, cmd
, zrule
->vrf_id
);
1085 * We are sending one item at a time at the moment
1089 stream_putl(s
, zrule
->seq
);
1090 stream_putl(s
, zrule
->priority
);
1091 stream_putl(s
, zrule
->unique
);
1093 zapi_encode_prefix(s
, &(zrule
->filter
.src_ip
),
1094 zrule
->filter
.src_ip
.family
);
1095 stream_putw(s
, zrule
->filter
.src_port
); /* src port */
1096 zapi_encode_prefix(s
, &(zrule
->filter
.dst_ip
),
1097 zrule
->filter
.src_ip
.family
);
1098 stream_putw(s
, zrule
->filter
.dst_port
); /* dst port */
1099 stream_putw(s
, zrule
->filter
.fwmark
); /* fwmark */
1101 stream_putl(s
, zrule
->action
.table
);
1102 stream_putl(s
, zrule
->ifindex
);
1104 /* Put length at the first point of the stream. */
1105 stream_putw_at(s
, 0, stream_get_endp(s
));
1110 bool zapi_route_notify_decode(struct stream
*s
, struct prefix
*p
,
1112 enum zapi_route_notify_owner
*note
)
1116 STREAM_GET(note
, s
, sizeof(*note
));
1118 STREAM_GETC(s
, p
->family
);
1119 STREAM_GETC(s
, p
->prefixlen
);
1120 STREAM_GET(&p
->u
.prefix
, s
, prefix_blen(p
));
1131 bool zapi_rule_notify_decode(struct stream
*s
, uint32_t *seqno
,
1132 uint32_t *priority
, uint32_t *unique
,
1134 enum zapi_rule_notify_owner
*note
)
1136 uint32_t prio
, seq
, uni
;
1139 STREAM_GET(note
, s
, sizeof(*note
));
1141 STREAM_GETL(s
, seq
);
1142 STREAM_GETL(s
, prio
);
1143 STREAM_GETL(s
, uni
);
1144 STREAM_GETL(s
, ifi
);
1147 zlog_debug("%s: %u %u %u %u", __PRETTY_FUNCTION__
, seq
, prio
,
1160 bool zapi_ipset_notify_decode(struct stream
*s
, uint32_t *unique
,
1161 enum zapi_ipset_notify_owner
*note
)
1165 STREAM_GET(note
, s
, sizeof(*note
));
1167 STREAM_GETL(s
, uni
);
1170 zlog_debug("%s: %u", __PRETTY_FUNCTION__
, uni
);
1179 bool zapi_ipset_entry_notify_decode(struct stream
*s
, uint32_t *unique
,
1181 enum zapi_ipset_entry_notify_owner
*note
)
1185 STREAM_GET(note
, s
, sizeof(*note
));
1187 STREAM_GETL(s
, uni
);
1189 STREAM_GET(ipset_name
, s
, ZEBRA_IPSET_NAME_SIZE
);
1192 zlog_debug("%s: %u", __PRETTY_FUNCTION__
, uni
);
1201 bool zapi_iptable_notify_decode(struct stream
*s
,
1203 enum zapi_iptable_notify_owner
*note
)
1207 STREAM_GET(note
, s
, sizeof(*note
));
1209 STREAM_GETL(s
, uni
);
1212 zlog_debug("%s: %u", __PRETTY_FUNCTION__
, uni
);
1221 struct nexthop
*nexthop_from_zapi_nexthop(struct zapi_nexthop
*znh
)
1223 struct nexthop
*n
= nexthop_new();
1225 n
->type
= znh
->type
;
1226 n
->vrf_id
= znh
->vrf_id
;
1227 n
->ifindex
= znh
->ifindex
;
1228 n
->gate
= znh
->gate
;
1231 * This function currently handles labels
1233 if (znh
->label_num
) {
1234 nexthop_add_labels(n
, ZEBRA_LSP_NONE
, znh
->label_num
,
1241 bool zapi_nexthop_update_decode(struct stream
*s
, struct zapi_route
*nhr
)
1245 memset(nhr
, 0, sizeof(*nhr
));
1247 STREAM_GETW(s
, nhr
->prefix
.family
);
1248 STREAM_GETC(s
, nhr
->prefix
.prefixlen
);
1249 switch (nhr
->prefix
.family
) {
1251 STREAM_GET(&nhr
->prefix
.u
.prefix4
.s_addr
, s
, IPV4_MAX_BYTELEN
);
1254 STREAM_GET(&nhr
->prefix
.u
.prefix6
, s
, IPV6_MAX_BYTELEN
);
1260 STREAM_GETC(s
, nhr
->type
);
1261 STREAM_GETW(s
, nhr
->instance
);
1262 STREAM_GETC(s
, nhr
->distance
);
1263 STREAM_GETL(s
, nhr
->metric
);
1264 STREAM_GETC(s
, nhr
->nexthop_num
);
1266 for (i
= 0; i
< nhr
->nexthop_num
; i
++) {
1267 STREAM_GETL(s
, nhr
->nexthops
[i
].vrf_id
);
1268 STREAM_GETC(s
, nhr
->nexthops
[i
].type
);
1269 switch (nhr
->nexthops
[i
].type
) {
1270 case NEXTHOP_TYPE_IPV4
:
1271 case NEXTHOP_TYPE_IPV4_IFINDEX
:
1272 STREAM_GET(&nhr
->nexthops
[i
].gate
.ipv4
.s_addr
, s
,
1274 STREAM_GETL(s
, nhr
->nexthops
[i
].ifindex
);
1276 case NEXTHOP_TYPE_IFINDEX
:
1277 STREAM_GETL(s
, nhr
->nexthops
[i
].ifindex
);
1279 case NEXTHOP_TYPE_IPV6
:
1280 case NEXTHOP_TYPE_IPV6_IFINDEX
:
1281 STREAM_GET(&nhr
->nexthops
[i
].gate
.ipv6
, s
,
1283 STREAM_GETL(s
, nhr
->nexthops
[i
].ifindex
);
1285 case NEXTHOP_TYPE_BLACKHOLE
:
1288 STREAM_GETC(s
, nhr
->nexthops
[i
].label_num
);
1289 if (nhr
->nexthops
[i
].label_num
> MPLS_MAX_LABELS
) {
1290 flog_err(EC_LIB_ZAPI_ENCODE
,
1291 "%s: invalid number of MPLS labels (%u)",
1292 __func__
, nhr
->nexthops
[i
].label_num
);
1295 if (nhr
->nexthops
[i
].label_num
)
1296 STREAM_GET(&nhr
->nexthops
[i
].labels
[0], s
,
1297 nhr
->nexthops
[i
].label_num
1298 * sizeof(mpls_label_t
));
1307 * send a ZEBRA_REDISTRIBUTE_ADD or ZEBRA_REDISTRIBUTE_DELETE
1308 * for the route type (ZEBRA_ROUTE_KERNEL etc.). The zebra server will
1309 * then set/unset redist[type] in the client handle (a struct zserv) for the
1312 int zebra_redistribute_send(int command
, struct zclient
*zclient
, afi_t afi
,
1313 int type
, unsigned short instance
, vrf_id_t vrf_id
)
1320 zclient_create_header(s
, command
, vrf_id
);
1321 stream_putc(s
, afi
);
1322 stream_putc(s
, type
);
1323 stream_putw(s
, instance
);
1325 stream_putw_at(s
, 0, stream_get_endp(s
));
1327 return zclient_send_message(zclient
);
1330 int zebra_redistribute_default_send(int command
, struct zclient
*zclient
,
1331 afi_t afi
, vrf_id_t vrf_id
)
1338 zclient_create_header(s
, command
, vrf_id
);
1339 stream_putc(s
, afi
);
1341 stream_putw_at(s
, 0, stream_get_endp(s
));
1343 return zclient_send_message(zclient
);
1346 /* Get prefix in ZServ format; family should be filled in on prefix */
1347 static void zclient_stream_get_prefix(struct stream
*s
, struct prefix
*p
)
1349 size_t plen
= prefix_blen(p
);
1356 stream_get(&p
->u
.prefix
, s
, plen
);
1358 p
->prefixlen
= MIN(plen
* 8, c
);
1364 /* Router-id update from zebra daemon. */
1365 void zebra_router_id_update_read(struct stream
*s
, struct prefix
*rid
)
1367 /* Fetch interface address. */
1368 STREAM_GETC(s
, rid
->family
);
1370 zclient_stream_get_prefix(s
, rid
);
1376 /* Interface addition from zebra daemon. */
1378 * The format of the message sent with type ZEBRA_INTERFACE_ADD or
1379 * ZEBRA_INTERFACE_DELETE from zebra to the client is:
1381 * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
1382 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1388 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1390 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1392 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1395 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1397 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1399 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1401 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1403 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1405 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1406 * | parent ifindex |
1407 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1408 * | Link Layer Type |
1409 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1410 * | Harware Address Length |
1411 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1412 * | Hardware Address if HW lenght different from 0 |
1413 * | ... max INTERFACE_HWADDR_MAX |
1414 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1415 * | Link_params? | Whether a link-params follows: 1 or 0.
1416 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1417 * | Link_params 0 or 1 INTERFACE_LINK_PARAMS_SIZE sized |
1418 * | .... (struct if_link_params). |
1419 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1422 static void zclient_vrf_add(struct zclient
*zclient
, vrf_id_t vrf_id
)
1425 char vrfname_tmp
[VRF_NAMSIZ
];
1426 struct vrf_data data
;
1428 stream_get(&data
, zclient
->ibuf
, sizeof(struct vrf_data
));
1429 /* Read interface name. */
1430 stream_get(vrfname_tmp
, zclient
->ibuf
, VRF_NAMSIZ
);
1432 /* Lookup/create vrf by vrf_id. */
1433 vrf
= vrf_get(vrf_id
, vrfname_tmp
);
1434 vrf
->data
.l
.table_id
= data
.l
.table_id
;
1435 memcpy(vrf
->data
.l
.netns_name
, data
.l
.netns_name
, NS_NAMSIZ
);
1436 /* overwrite default vrf */
1437 if (vrf_id
== VRF_DEFAULT
)
1438 vrf_set_default_name(vrfname_tmp
, false);
1442 static void zclient_vrf_delete(struct zclient
*zclient
, vrf_id_t vrf_id
)
1446 /* Lookup vrf by vrf_id. */
1447 vrf
= vrf_lookup_by_id(vrf_id
);
1450 * If a routing protocol doesn't know about a
1451 * vrf that is about to be deleted. There is
1452 * no point in attempting to delete it.
1460 struct interface
*zebra_interface_add_read(struct stream
*s
, vrf_id_t vrf_id
)
1462 struct interface
*ifp
;
1463 char ifname_tmp
[INTERFACE_NAMSIZ
];
1465 /* Read interface name. */
1466 stream_get(ifname_tmp
, s
, INTERFACE_NAMSIZ
);
1468 /* Lookup/create interface by name. */
1469 ifp
= if_get_by_name(ifname_tmp
, vrf_id
);
1471 zebra_interface_if_set_value(s
, ifp
);
1477 * Read interface up/down msg (ZEBRA_INTERFACE_UP/ZEBRA_INTERFACE_DOWN)
1478 * from zebra server. The format of this message is the same as
1479 * that sent for ZEBRA_INTERFACE_ADD/ZEBRA_INTERFACE_DELETE (see
1480 * comments for zebra_interface_add_read), except that no sockaddr_dl
1481 * is sent at the tail of the message.
1483 struct interface
*zebra_interface_state_read(struct stream
*s
, vrf_id_t vrf_id
)
1485 struct interface
*ifp
;
1486 char ifname_tmp
[INTERFACE_NAMSIZ
];
1488 /* Read interface name. */
1489 stream_get(ifname_tmp
, s
, INTERFACE_NAMSIZ
);
1491 /* Lookup this by interface index. */
1492 ifp
= if_lookup_by_name(ifname_tmp
, vrf_id
);
1494 flog_err(EC_LIB_ZAPI_ENCODE
,
1495 "INTERFACE_STATE: Cannot find IF %s in VRF %d",
1496 ifname_tmp
, vrf_id
);
1500 zebra_interface_if_set_value(s
, ifp
);
1505 static void link_params_set_value(struct stream
*s
, struct if_link_params
*iflp
)
1511 iflp
->lp_status
= stream_getl(s
);
1512 iflp
->te_metric
= stream_getl(s
);
1513 iflp
->max_bw
= stream_getf(s
);
1514 iflp
->max_rsv_bw
= stream_getf(s
);
1515 uint32_t bwclassnum
= stream_getl(s
);
1518 for (i
= 0; i
< bwclassnum
&& i
< MAX_CLASS_TYPE
; i
++)
1519 iflp
->unrsv_bw
[i
] = stream_getf(s
);
1522 EC_LIB_ZAPI_MISSMATCH
,
1523 "%s: received %d > %d (MAX_CLASS_TYPE) bw entries"
1524 " - outdated library?",
1525 __func__
, bwclassnum
, MAX_CLASS_TYPE
);
1527 iflp
->admin_grp
= stream_getl(s
);
1528 iflp
->rmt_as
= stream_getl(s
);
1529 iflp
->rmt_ip
.s_addr
= stream_get_ipv4(s
);
1531 iflp
->av_delay
= stream_getl(s
);
1532 iflp
->min_delay
= stream_getl(s
);
1533 iflp
->max_delay
= stream_getl(s
);
1534 iflp
->delay_var
= stream_getl(s
);
1536 iflp
->pkt_loss
= stream_getf(s
);
1537 iflp
->res_bw
= stream_getf(s
);
1538 iflp
->ava_bw
= stream_getf(s
);
1539 iflp
->use_bw
= stream_getf(s
);
1542 struct interface
*zebra_interface_link_params_read(struct stream
*s
,
1545 struct if_link_params
*iflp
;
1550 ifindex
= stream_getl(s
);
1552 struct interface
*ifp
= if_lookup_by_index(ifindex
, vrf_id
);
1555 flog_err(EC_LIB_ZAPI_ENCODE
,
1556 "%s: unknown ifindex %u, shouldn't happen", __func__
,
1561 if ((iflp
= if_link_params_get(ifp
)) == NULL
)
1564 link_params_set_value(s
, iflp
);
1569 void zebra_interface_if_set_value(struct stream
*s
, struct interface
*ifp
)
1571 uint8_t link_params_status
= 0;
1572 ifindex_t old_ifindex
;
1574 old_ifindex
= ifp
->ifindex
;
1575 /* Read interface's index. */
1576 if_set_index(ifp
, stream_getl(s
));
1577 ifp
->status
= stream_getc(s
);
1579 /* Read interface's value. */
1580 ifp
->flags
= stream_getq(s
);
1581 ifp
->ptm_enable
= stream_getc(s
);
1582 ifp
->ptm_status
= stream_getc(s
);
1583 ifp
->metric
= stream_getl(s
);
1584 ifp
->speed
= stream_getl(s
);
1585 ifp
->mtu
= stream_getl(s
);
1586 ifp
->mtu6
= stream_getl(s
);
1587 ifp
->bandwidth
= stream_getl(s
);
1588 ifp
->link_ifindex
= stream_getl(s
);
1589 ifp
->ll_type
= stream_getl(s
);
1590 ifp
->hw_addr_len
= stream_getl(s
);
1591 if (ifp
->hw_addr_len
)
1592 stream_get(ifp
->hw_addr
, s
,
1593 MIN(ifp
->hw_addr_len
, INTERFACE_HWADDR_MAX
));
1595 /* Read Traffic Engineering status */
1596 link_params_status
= stream_getc(s
);
1597 /* Then, Traffic Engineering parameters if any */
1598 if (link_params_status
) {
1599 struct if_link_params
*iflp
= if_link_params_get(ifp
);
1600 link_params_set_value(s
, iflp
);
1603 nexthop_group_interface_state_change(ifp
, old_ifindex
);
1606 size_t zebra_interface_link_params_write(struct stream
*s
,
1607 struct interface
*ifp
)
1610 struct if_link_params
*iflp
;
1613 if (s
== NULL
|| ifp
== NULL
|| ifp
->link_params
== NULL
)
1616 iflp
= ifp
->link_params
;
1619 w
+= stream_putl(s
, iflp
->lp_status
);
1621 w
+= stream_putl(s
, iflp
->te_metric
);
1622 w
+= stream_putf(s
, iflp
->max_bw
);
1623 w
+= stream_putf(s
, iflp
->max_rsv_bw
);
1625 w
+= stream_putl(s
, MAX_CLASS_TYPE
);
1626 for (i
= 0; i
< MAX_CLASS_TYPE
; i
++)
1627 w
+= stream_putf(s
, iflp
->unrsv_bw
[i
]);
1629 w
+= stream_putl(s
, iflp
->admin_grp
);
1630 w
+= stream_putl(s
, iflp
->rmt_as
);
1631 w
+= stream_put_in_addr(s
, &iflp
->rmt_ip
);
1633 w
+= stream_putl(s
, iflp
->av_delay
);
1634 w
+= stream_putl(s
, iflp
->min_delay
);
1635 w
+= stream_putl(s
, iflp
->max_delay
);
1636 w
+= stream_putl(s
, iflp
->delay_var
);
1638 w
+= stream_putf(s
, iflp
->pkt_loss
);
1639 w
+= stream_putf(s
, iflp
->res_bw
);
1640 w
+= stream_putf(s
, iflp
->ava_bw
);
1641 w
+= stream_putf(s
, iflp
->use_bw
);
1647 * format of message for address additon is:
1651 * | type | ZEBRA_INTERFACE_ADDRESS_ADD or
1652 * +-+-+-+-+-+-+-+-+ ZEBRA_INTERFACE_ADDRES_DELETE
1661 * | ifc_flags | flags for connected address
1669 * | addr_len | len of addr. E.g., addr_len = 4 for ipv4 addrs.
1677 static int memconstant(const void *s
, int c
, size_t n
)
1679 const uint8_t *p
= s
;
1688 struct connected
*zebra_interface_address_read(int type
, struct stream
*s
,
1692 struct interface
*ifp
;
1693 struct connected
*ifc
;
1694 struct prefix p
, d
, *dp
;
1698 memset(&p
, 0, sizeof(p
));
1699 memset(&d
, 0, sizeof(d
));
1701 /* Get interface index. */
1702 ifindex
= stream_getl(s
);
1705 ifp
= if_lookup_by_index(ifindex
, vrf_id
);
1707 flog_err(EC_LIB_ZAPI_ENCODE
,
1708 "INTERFACE_ADDRESS_%s: Cannot find IF %u in VRF %d",
1709 (type
== ZEBRA_INTERFACE_ADDRESS_ADD
) ? "ADD" : "DEL",
1715 ifc_flags
= stream_getc(s
);
1717 /* Fetch interface address. */
1718 d
.family
= p
.family
= stream_getc(s
);
1719 plen
= prefix_blen(&d
);
1721 zclient_stream_get_prefix(s
, &p
);
1723 /* Fetch destination address. */
1724 stream_get(&d
.u
.prefix
, s
, plen
);
1726 /* N.B. NULL destination pointers are encoded as all zeroes */
1727 dp
= memconstant(&d
.u
.prefix
, 0, plen
) ? NULL
: &d
;
1729 if (type
== ZEBRA_INTERFACE_ADDRESS_ADD
) {
1730 ifc
= connected_lookup_prefix_exact(ifp
, &p
);
1732 /* N.B. NULL destination pointers are encoded as all
1734 ifc
= connected_add_by_prefix(ifp
, &p
, dp
);
1737 ifc
->flags
= ifc_flags
;
1738 if (ifc
->destination
)
1739 ifc
->destination
->prefixlen
=
1740 ifc
->address
->prefixlen
;
1741 else if (CHECK_FLAG(ifc
->flags
, ZEBRA_IFA_PEER
)) {
1742 /* carp interfaces on OpenBSD with 0.0.0.0/0 as
1744 char buf
[PREFIX_STRLEN
];
1747 "warning: interface %s address %s with peer flag set, but no peer address!",
1749 prefix2str(ifc
->address
, buf
,
1751 UNSET_FLAG(ifc
->flags
, ZEBRA_IFA_PEER
);
1755 assert(type
== ZEBRA_INTERFACE_ADDRESS_DELETE
);
1756 ifc
= connected_delete_by_prefix(ifp
, &p
);
1763 * format of message for neighbor connected address is:
1767 * | type | ZEBRA_INTERFACE_NBR_ADDRESS_ADD or
1768 * +-+-+-+-+-+-+-+-+ ZEBRA_INTERFACE_NBR_ADDRES_DELETE
1783 * | addr_len | len of addr.
1786 struct nbr_connected
*
1787 zebra_interface_nbr_address_read(int type
, struct stream
*s
, vrf_id_t vrf_id
)
1789 unsigned int ifindex
;
1790 struct interface
*ifp
;
1792 struct nbr_connected
*ifc
;
1794 /* Get interface index. */
1795 ifindex
= stream_getl(s
);
1798 ifp
= if_lookup_by_index(ifindex
, vrf_id
);
1800 flog_err(EC_LIB_ZAPI_ENCODE
,
1801 "INTERFACE_NBR_%s: Cannot find IF %u in VRF %d",
1802 (type
== ZEBRA_INTERFACE_NBR_ADDRESS_ADD
) ? "ADD"
1808 p
.family
= stream_getc(s
);
1809 stream_get(&p
.u
.prefix
, s
, prefix_blen(&p
));
1810 p
.prefixlen
= stream_getc(s
);
1812 if (type
== ZEBRA_INTERFACE_NBR_ADDRESS_ADD
) {
1813 /* Currently only supporting P2P links, so any new RA source
1815 considered as the replacement of the previously learnt
1816 Link-Local address. */
1817 if (!(ifc
= listnode_head(ifp
->nbr_connected
))) {
1818 ifc
= nbr_connected_new();
1819 ifc
->address
= prefix_new();
1821 listnode_add(ifp
->nbr_connected
, ifc
);
1824 prefix_copy(ifc
->address
, &p
);
1826 assert(type
== ZEBRA_INTERFACE_NBR_ADDRESS_DELETE
);
1828 ifc
= nbr_connected_check(ifp
, &p
);
1830 listnode_delete(ifp
->nbr_connected
, ifc
);
1836 struct interface
*zebra_interface_vrf_update_read(struct stream
*s
,
1838 vrf_id_t
*new_vrf_id
)
1840 char ifname
[INTERFACE_NAMSIZ
];
1841 struct interface
*ifp
;
1844 /* Read interface name. */
1845 stream_get(ifname
, s
, INTERFACE_NAMSIZ
);
1847 /* Lookup interface. */
1848 ifp
= if_lookup_by_name(ifname
, vrf_id
);
1850 flog_err(EC_LIB_ZAPI_ENCODE
,
1851 "INTERFACE_VRF_UPDATE: Cannot find IF %s in VRF %d",
1856 /* Fetch new VRF Id. */
1857 new_id
= stream_getw(s
);
1859 *new_vrf_id
= new_id
;
1863 /* filter unwanted messages until the expected one arrives */
1864 static int zclient_read_sync_response(struct zclient
*zclient
,
1865 uint16_t expected_cmd
)
1877 cmd
= expected_cmd
+ 1;
1878 while (ret
== 0 && cmd
!= expected_cmd
) {
1882 /* wait until response arrives */
1884 FD_SET(zclient
->sock
, &readfds
);
1885 select(zclient
->sock
+ 1, &readfds
, NULL
, NULL
, NULL
);
1886 if (!FD_ISSET(zclient
->sock
, &readfds
))
1889 ret
= zclient_read_header(s
, zclient
->sock
, &size
, &marker
,
1890 &version
, &vrf_id
, &cmd
);
1892 zlog_debug("%s: Response (%d bytes) received", __func__
,
1896 flog_err(EC_LIB_ZAPI_ENCODE
, "%s: Invalid Sync Message Reply",
1904 * Connect to label manager in a syncronous way
1906 * It first writes the request to zcient output buffer and then
1907 * immediately reads the answer from the input buffer.
1909 * @param zclient Zclient used to connect to label manager (zebra)
1910 * @param async Synchronous (0) or asynchronous (1) operation
1911 * @result Result of response
1913 int lm_label_manager_connect(struct zclient
*zclient
, int async
)
1918 uint16_t cmd
= async
? ZEBRA_LABEL_MANAGER_CONNECT_ASYNC
:
1919 ZEBRA_LABEL_MANAGER_CONNECT
;
1922 zlog_debug("Connecting to Label Manager (LM)");
1924 if (zclient
->sock
< 0) {
1925 zlog_debug("%s: invalid zclient socket", __func__
);
1932 zclient_create_header(s
, cmd
, VRF_DEFAULT
);
1935 stream_putc(s
, zclient
->redist_default
);
1937 stream_putw(s
, zclient
->instance
);
1939 /* Put length at the first point of the stream. */
1940 stream_putw_at(s
, 0, stream_get_endp(s
));
1942 ret
= writen(zclient
->sock
, s
->data
, stream_get_endp(s
));
1944 flog_err(EC_LIB_ZAPI_SOCKET
, "Can't write to zclient sock");
1945 close(zclient
->sock
);
1950 flog_err(EC_LIB_ZAPI_SOCKET
, "Zclient sock closed");
1951 close(zclient
->sock
);
1956 zlog_debug("LM connect request sent (%d bytes)", ret
);
1962 if (zclient_read_sync_response(zclient
, cmd
)
1968 /* read instance and proto */
1969 uint8_t proto
= stream_getc(s
);
1970 uint16_t instance
= stream_getw(s
);
1973 if (proto
!= zclient
->redist_default
)
1976 "Wrong proto (%u) in LM connect response. Should be %u",
1977 proto
, zclient
->redist_default
);
1978 if (instance
!= zclient
->instance
)
1981 "Wrong instId (%u) in LM connect response. Should be %u",
1982 instance
, zclient
->instance
);
1985 result
= stream_getc(s
);
1987 zlog_debug("LM connect-response received, result %u", result
);
1993 * Asynchronous label chunk request
1995 * @param zclient Zclient used to connect to label manager (zebra)
1996 * @param keep Avoid garbage collection
1997 * @param chunk_size Amount of labels requested
1998 * @result 0 on success, -1 otherwise
2000 int zclient_send_get_label_chunk(struct zclient
*zclient
, uint8_t keep
,
2001 uint32_t chunk_size
)
2006 zlog_debug("Getting Label Chunk");
2008 if (zclient
->sock
< 0)
2014 zclient_create_header(s
, ZEBRA_GET_LABEL_CHUNK
, VRF_DEFAULT
);
2016 stream_putc(s
, zclient
->redist_default
);
2018 stream_putw(s
, zclient
->instance
);
2019 stream_putc(s
, keep
);
2020 stream_putl(s
, chunk_size
);
2022 /* Put length at the first point of the stream. */
2023 stream_putw_at(s
, 0, stream_get_endp(s
));
2025 return zclient_send_message(zclient
);
2029 * Function to request a label chunk in a syncronous way
2031 * It first writes the request to zlcient output buffer and then
2032 * immediately reads the answer from the input buffer.
2034 * @param zclient Zclient used to connect to label manager (zebra)
2035 * @param keep Avoid garbage collection
2036 * @param chunk_size Amount of labels requested
2037 * @param start To write first assigned chunk label to
2038 * @param end To write last assigned chunk label to
2039 * @result 0 on success, -1 otherwise
2041 int lm_get_label_chunk(struct zclient
*zclient
, uint8_t keep
,
2042 uint32_t chunk_size
, uint32_t *start
, uint32_t *end
)
2046 uint8_t response_keep
;
2049 zlog_debug("Getting Label Chunk");
2051 if (zclient
->sock
< 0)
2057 zclient_create_header(s
, ZEBRA_GET_LABEL_CHUNK
, VRF_DEFAULT
);
2059 stream_putc(s
, zclient
->redist_default
);
2061 stream_putw(s
, zclient
->instance
);
2063 stream_putc(s
, keep
);
2065 stream_putl(s
, chunk_size
);
2066 /* Put length at the first point of the stream. */
2067 stream_putw_at(s
, 0, stream_get_endp(s
));
2069 ret
= writen(zclient
->sock
, s
->data
, stream_get_endp(s
));
2071 flog_err(EC_LIB_ZAPI_SOCKET
, "Can't write to zclient sock");
2072 close(zclient
->sock
);
2077 flog_err(EC_LIB_ZAPI_SOCKET
, "Zclient sock closed");
2078 close(zclient
->sock
);
2083 zlog_debug("Label chunk request (%d bytes) sent", ret
);
2086 if (zclient_read_sync_response(zclient
, ZEBRA_GET_LABEL_CHUNK
) != 0)
2089 /* parse response */
2092 /* read proto and instance */
2093 uint8_t proto
= stream_getc(s
);
2094 uint16_t instance
= stream_getw(s
);
2097 if (proto
!= zclient
->redist_default
)
2098 flog_err(EC_LIB_ZAPI_ENCODE
,
2099 "Wrong proto (%u) in get chunk response. Should be %u",
2100 proto
, zclient
->redist_default
);
2101 if (instance
!= zclient
->instance
)
2102 flog_err(EC_LIB_ZAPI_ENCODE
,
2103 "Wrong instId (%u) in get chunk response Should be %u",
2104 instance
, zclient
->instance
);
2107 response_keep
= stream_getc(s
);
2108 /* start and end labels */
2109 *start
= stream_getl(s
);
2110 *end
= stream_getl(s
);
2112 /* not owning this response */
2113 if (keep
!= response_keep
) {
2116 "Invalid Label chunk: %u - %u, keeps mismatch %u != %u",
2117 *start
, *end
, keep
, response_keep
);
2120 if (*start
> *end
|| *start
< MPLS_LABEL_UNRESERVED_MIN
2121 || *end
> MPLS_LABEL_UNRESERVED_MAX
) {
2122 flog_err(EC_LIB_ZAPI_ENCODE
, "Invalid Label chunk: %u - %u",
2128 zlog_debug("Label Chunk assign: %u - %u (%u)", *start
, *end
,
2135 * Function to release a label chunk
2137 * @param zclient Zclient used to connect to label manager (zebra)
2138 * @param start First label of chunk
2139 * @param end Last label of chunk
2140 * @result 0 on success, -1 otherwise
2142 int lm_release_label_chunk(struct zclient
*zclient
, uint32_t start
,
2149 zlog_debug("Releasing Label Chunk %u - %u", start
, end
);
2151 if (zclient
->sock
< 0)
2157 zclient_create_header(s
, ZEBRA_RELEASE_LABEL_CHUNK
, VRF_DEFAULT
);
2160 stream_putc(s
, zclient
->redist_default
);
2162 stream_putw(s
, zclient
->instance
);
2164 stream_putl(s
, start
);
2166 stream_putl(s
, end
);
2168 /* Put length at the first point of the stream. */
2169 stream_putw_at(s
, 0, stream_get_endp(s
));
2171 ret
= writen(zclient
->sock
, s
->data
, stream_get_endp(s
));
2173 flog_err(EC_LIB_ZAPI_SOCKET
, "Can't write to zclient sock");
2174 close(zclient
->sock
);
2179 flog_err(EC_LIB_ZAPI_SOCKET
, "Zclient sock connection closed");
2180 close(zclient
->sock
);
2189 * Connect to table manager in a syncronous way
2191 * It first writes the request to zcient output buffer and then
2192 * immediately reads the answer from the input buffer.
2194 * @param zclient Zclient used to connect to table manager (zebra)
2195 * @result Result of response
2197 int tm_table_manager_connect(struct zclient
*zclient
)
2204 zlog_debug("Connecting to Table Manager");
2206 if (zclient
->sock
< 0)
2212 zclient_create_header(s
, ZEBRA_TABLE_MANAGER_CONNECT
, VRF_DEFAULT
);
2215 stream_putc(s
, zclient
->redist_default
);
2217 stream_putw(s
, zclient
->instance
);
2219 /* Put length at the first point of the stream. */
2220 stream_putw_at(s
, 0, stream_get_endp(s
));
2222 ret
= zclient_send_message(zclient
);
2227 zlog_debug("%s: Table manager connect request sent", __func__
);
2230 if (zclient_read_sync_response(zclient
, ZEBRA_TABLE_MANAGER_CONNECT
)
2236 STREAM_GETC(s
, result
);
2239 "%s: Table Manager connect response received, result %u",
2248 * Function to request a table chunk in a syncronous way
2250 * It first writes the request to zclient output buffer and then
2251 * immediately reads the answer from the input buffer.
2253 * @param zclient Zclient used to connect to table manager (zebra)
2254 * @param chunk_size Amount of table requested
2255 * @param start to write first assigned chunk table RT ID to
2256 * @param end To write last assigned chunk table RT ID to
2257 * @result 0 on success, -1 otherwise
2259 int tm_get_table_chunk(struct zclient
*zclient
, uint32_t chunk_size
,
2260 uint32_t *start
, uint32_t *end
)
2266 zlog_debug("Getting Table Chunk");
2268 if (zclient
->sock
< 0)
2274 zclient_create_header(s
, ZEBRA_GET_TABLE_CHUNK
, VRF_DEFAULT
);
2276 stream_putl(s
, chunk_size
);
2277 /* Put length at the first point of the stream. */
2278 stream_putw_at(s
, 0, stream_get_endp(s
));
2280 ret
= writen(zclient
->sock
, s
->data
, stream_get_endp(s
));
2282 flog_err(EC_LIB_ZAPI_SOCKET
, "%s: can't write to zclient->sock",
2284 close(zclient
->sock
);
2289 flog_err(EC_LIB_ZAPI_SOCKET
,
2290 "%s: zclient->sock connection closed", __func__
);
2291 close(zclient
->sock
);
2296 zlog_debug("%s: Table chunk request (%d bytes) sent", __func__
,
2300 if (zclient_read_sync_response(zclient
, ZEBRA_GET_TABLE_CHUNK
) != 0)
2304 /* start and end table IDs */
2305 STREAM_GETL(s
, *start
);
2306 STREAM_GETL(s
, *end
);
2309 zlog_debug("Table Chunk assign: %u - %u ", *start
, *end
);
2316 * Function to release a table chunk
2318 * @param zclient Zclient used to connect to table manager (zebra)
2319 * @param start First label of table
2320 * @param end Last label of chunk
2321 * @result 0 on success, -1 otherwise
2323 int tm_release_table_chunk(struct zclient
*zclient
, uint32_t start
,
2329 zlog_debug("Releasing Table Chunk");
2331 if (zclient
->sock
< 0)
2337 zclient_create_header(s
, ZEBRA_RELEASE_TABLE_CHUNK
, VRF_DEFAULT
);
2340 stream_putl(s
, start
);
2342 stream_putl(s
, end
);
2344 /* Put length at the first point of the stream. */
2345 stream_putw_at(s
, 0, stream_get_endp(s
));
2347 return zclient_send_message(zclient
);
2351 int zebra_send_pw(struct zclient
*zclient
, int command
, struct zapi_pw
*pw
)
2359 zclient_create_header(s
, command
, VRF_DEFAULT
);
2360 stream_write(s
, pw
->ifname
, IF_NAMESIZE
);
2361 stream_putl(s
, pw
->ifindex
);
2364 stream_putl(s
, pw
->type
);
2367 stream_putl(s
, pw
->af
);
2370 stream_put_in_addr(s
, &pw
->nexthop
.ipv4
);
2373 stream_write(s
, (uint8_t *)&pw
->nexthop
.ipv6
, 16);
2376 flog_err(EC_LIB_ZAPI_ENCODE
, "%s: unknown af", __func__
);
2381 stream_putl(s
, pw
->local_label
);
2382 stream_putl(s
, pw
->remote_label
);
2385 stream_putc(s
, pw
->flags
);
2387 /* Protocol specific fields */
2388 stream_write(s
, &pw
->data
, sizeof(union pw_protocol_fields
));
2390 /* Put length at the first point of the stream. */
2391 stream_putw_at(s
, 0, stream_get_endp(s
));
2393 return zclient_send_message(zclient
);
2397 * Receive PW status update from Zebra and send it to LDE process.
2399 void zebra_read_pw_status_update(ZAPI_CALLBACK_ARGS
, struct zapi_pw_status
*pw
)
2403 memset(pw
, 0, sizeof(struct zapi_pw_status
));
2407 stream_get(pw
->ifname
, s
, IF_NAMESIZE
);
2408 pw
->ifindex
= stream_getl(s
);
2409 pw
->status
= stream_getl(s
);
2412 static void zclient_capability_decode(ZAPI_CALLBACK_ARGS
)
2414 struct zclient_capabilities cap
;
2415 struct stream
*s
= zclient
->ibuf
;
2417 uint8_t mpls_enabled
;
2419 STREAM_GETL(s
, vrf_backend
);
2420 vrf_configure_backend(vrf_backend
);
2422 memset(&cap
, 0, sizeof(cap
));
2423 STREAM_GETC(s
, mpls_enabled
);
2424 cap
.mpls_enabled
= !!mpls_enabled
;
2425 STREAM_GETL(s
, cap
.ecmp
);
2426 STREAM_GETC(s
, cap
.role
);
2428 if (zclient
->zebra_capabilities
)
2429 (*zclient
->zebra_capabilities
)(&cap
);
2435 /* Zebra client message read function. */
2436 static int zclient_read(struct thread
*thread
)
2439 uint16_t length
, command
;
2440 uint8_t marker
, version
;
2442 struct zclient
*zclient
;
2444 /* Get socket to zebra. */
2445 zclient
= THREAD_ARG(thread
);
2446 zclient
->t_read
= NULL
;
2448 /* Read zebra header (if we don't have it already). */
2449 if ((already
= stream_get_endp(zclient
->ibuf
)) < ZEBRA_HEADER_SIZE
) {
2451 if (((nbyte
= stream_read_try(zclient
->ibuf
, zclient
->sock
,
2452 ZEBRA_HEADER_SIZE
- already
))
2457 "zclient connection closed socket [%d].",
2459 return zclient_failed(zclient
);
2461 if (nbyte
!= (ssize_t
)(ZEBRA_HEADER_SIZE
- already
)) {
2462 /* Try again later. */
2463 zclient_event(ZCLIENT_READ
, zclient
);
2466 already
= ZEBRA_HEADER_SIZE
;
2469 /* Reset to read from the beginning of the incoming packet. */
2470 stream_set_getp(zclient
->ibuf
, 0);
2472 /* Fetch header values. */
2473 length
= stream_getw(zclient
->ibuf
);
2474 marker
= stream_getc(zclient
->ibuf
);
2475 version
= stream_getc(zclient
->ibuf
);
2476 vrf_id
= stream_getl(zclient
->ibuf
);
2477 command
= stream_getw(zclient
->ibuf
);
2479 if (marker
!= ZEBRA_HEADER_MARKER
|| version
!= ZSERV_VERSION
) {
2481 EC_LIB_ZAPI_MISSMATCH
,
2482 "%s: socket %d version mismatch, marker %d, version %d",
2483 __func__
, zclient
->sock
, marker
, version
);
2484 return zclient_failed(zclient
);
2487 if (length
< ZEBRA_HEADER_SIZE
) {
2488 flog_err(EC_LIB_ZAPI_MISSMATCH
,
2489 "%s: socket %d message length %u is less than %d ",
2490 __func__
, zclient
->sock
, length
, ZEBRA_HEADER_SIZE
);
2491 return zclient_failed(zclient
);
2495 if (length
> STREAM_SIZE(zclient
->ibuf
)) {
2499 "%s: message size %u exceeds buffer size %lu, expanding...",
2501 (unsigned long)STREAM_SIZE(zclient
->ibuf
));
2502 ns
= stream_new(length
);
2503 stream_copy(ns
, zclient
->ibuf
);
2504 stream_free(zclient
->ibuf
);
2508 /* Read rest of zebra packet. */
2509 if (already
< length
) {
2511 if (((nbyte
= stream_read_try(zclient
->ibuf
, zclient
->sock
,
2517 "zclient connection closed socket [%d].",
2519 return zclient_failed(zclient
);
2521 if (nbyte
!= (ssize_t
)(length
- already
)) {
2522 /* Try again later. */
2523 zclient_event(ZCLIENT_READ
, zclient
);
2528 length
-= ZEBRA_HEADER_SIZE
;
2531 zlog_debug("zclient 0x%p command %s VRF %u",
2532 (void *)zclient
, zserv_command_string(command
),
2536 case ZEBRA_CAPABILITIES
:
2537 zclient_capability_decode(command
, zclient
, length
, vrf_id
);
2539 case ZEBRA_ROUTER_ID_UPDATE
:
2540 if (zclient
->router_id_update
)
2541 (*zclient
->router_id_update
)(command
, zclient
, length
,
2545 zclient_vrf_add(zclient
, vrf_id
);
2547 case ZEBRA_VRF_DELETE
:
2548 zclient_vrf_delete(zclient
, vrf_id
);
2550 case ZEBRA_INTERFACE_ADD
:
2551 if (zclient
->interface_add
)
2552 (*zclient
->interface_add
)(command
, zclient
, length
,
2555 case ZEBRA_INTERFACE_DELETE
:
2556 if (zclient
->interface_delete
)
2557 (*zclient
->interface_delete
)(command
, zclient
, length
,
2560 case ZEBRA_INTERFACE_ADDRESS_ADD
:
2561 if (zclient
->interface_address_add
)
2562 (*zclient
->interface_address_add
)(command
, zclient
,
2565 case ZEBRA_INTERFACE_ADDRESS_DELETE
:
2566 if (zclient
->interface_address_delete
)
2567 (*zclient
->interface_address_delete
)(command
, zclient
,
2570 case ZEBRA_INTERFACE_BFD_DEST_UPDATE
:
2571 if (zclient
->interface_bfd_dest_update
)
2572 (*zclient
->interface_bfd_dest_update
)(command
, zclient
,
2575 case ZEBRA_INTERFACE_NBR_ADDRESS_ADD
:
2576 if (zclient
->interface_nbr_address_add
)
2577 (*zclient
->interface_nbr_address_add
)(command
, zclient
,
2580 case ZEBRA_INTERFACE_NBR_ADDRESS_DELETE
:
2581 if (zclient
->interface_nbr_address_delete
)
2582 (*zclient
->interface_nbr_address_delete
)(
2583 command
, zclient
, length
, vrf_id
);
2585 case ZEBRA_INTERFACE_UP
:
2586 if (zclient
->interface_up
)
2587 (*zclient
->interface_up
)(command
, zclient
, length
,
2590 case ZEBRA_INTERFACE_DOWN
:
2591 if (zclient
->interface_down
)
2592 (*zclient
->interface_down
)(command
, zclient
, length
,
2595 case ZEBRA_INTERFACE_VRF_UPDATE
:
2596 if (zclient
->interface_vrf_update
)
2597 (*zclient
->interface_vrf_update
)(command
, zclient
,
2600 case ZEBRA_NEXTHOP_UPDATE
:
2602 zlog_debug("zclient rcvd nexthop update");
2603 if (zclient
->nexthop_update
)
2604 (*zclient
->nexthop_update
)(command
, zclient
, length
,
2607 case ZEBRA_IMPORT_CHECK_UPDATE
:
2609 zlog_debug("zclient rcvd import check update");
2610 if (zclient
->import_check_update
)
2611 (*zclient
->import_check_update
)(command
, zclient
,
2614 case ZEBRA_BFD_DEST_REPLAY
:
2615 if (zclient
->bfd_dest_replay
)
2616 (*zclient
->bfd_dest_replay
)(command
, zclient
, length
,
2619 case ZEBRA_REDISTRIBUTE_ROUTE_ADD
:
2620 if (zclient
->redistribute_route_add
)
2621 (*zclient
->redistribute_route_add
)(command
, zclient
,
2624 case ZEBRA_REDISTRIBUTE_ROUTE_DEL
:
2625 if (zclient
->redistribute_route_del
)
2626 (*zclient
->redistribute_route_del
)(command
, zclient
,
2629 case ZEBRA_INTERFACE_LINK_PARAMS
:
2630 if (zclient
->interface_link_params
)
2631 (*zclient
->interface_link_params
)(command
, zclient
,
2634 case ZEBRA_FEC_UPDATE
:
2636 zlog_debug("zclient rcvd fec update");
2637 if (zclient
->fec_update
)
2638 (*zclient
->fec_update
)(command
, zclient
, length
);
2640 case ZEBRA_LOCAL_ES_ADD
:
2641 if (zclient
->local_es_add
)
2642 (*zclient
->local_es_add
)(command
, zclient
, length
,
2645 case ZEBRA_LOCAL_ES_DEL
:
2646 if (zclient
->local_es_del
)
2647 (*zclient
->local_es_del
)(command
, zclient
, length
,
2651 if (zclient
->local_vni_add
)
2652 (*zclient
->local_vni_add
)(command
, zclient
, length
,
2656 if (zclient
->local_vni_del
)
2657 (*zclient
->local_vni_del
)(command
, zclient
, length
,
2660 case ZEBRA_L3VNI_ADD
:
2661 if (zclient
->local_l3vni_add
)
2662 (*zclient
->local_l3vni_add
)(command
, zclient
, length
,
2665 case ZEBRA_L3VNI_DEL
:
2666 if (zclient
->local_l3vni_del
)
2667 (*zclient
->local_l3vni_del
)(command
, zclient
, length
,
2670 case ZEBRA_MACIP_ADD
:
2671 if (zclient
->local_macip_add
)
2672 (*zclient
->local_macip_add
)(command
, zclient
, length
,
2675 case ZEBRA_MACIP_DEL
:
2676 if (zclient
->local_macip_del
)
2677 (*zclient
->local_macip_del
)(command
, zclient
, length
,
2680 case ZEBRA_IP_PREFIX_ROUTE_ADD
:
2681 if (zclient
->local_ip_prefix_add
)
2682 (*zclient
->local_ip_prefix_add
)(command
, zclient
,
2685 case ZEBRA_IP_PREFIX_ROUTE_DEL
:
2686 if (zclient
->local_ip_prefix_del
)
2687 (*zclient
->local_ip_prefix_del
)(command
, zclient
,
2690 case ZEBRA_PW_STATUS_UPDATE
:
2691 if (zclient
->pw_status_update
)
2692 (*zclient
->pw_status_update
)(command
, zclient
, length
,
2695 case ZEBRA_ROUTE_NOTIFY_OWNER
:
2696 if (zclient
->route_notify_owner
)
2697 (*zclient
->route_notify_owner
)(command
, zclient
, length
,
2700 case ZEBRA_RULE_NOTIFY_OWNER
:
2701 if (zclient
->rule_notify_owner
)
2702 (*zclient
->rule_notify_owner
)(command
, zclient
, length
,
2705 case ZEBRA_GET_LABEL_CHUNK
:
2706 if (zclient
->label_chunk
)
2707 (*zclient
->label_chunk
)(command
, zclient
, length
,
2710 case ZEBRA_IPSET_NOTIFY_OWNER
:
2711 if (zclient
->ipset_notify_owner
)
2712 (*zclient
->ipset_notify_owner
)(command
, zclient
, length
,
2715 case ZEBRA_IPSET_ENTRY_NOTIFY_OWNER
:
2716 if (zclient
->ipset_entry_notify_owner
)
2717 (*zclient
->ipset_entry_notify_owner
)(command
,
2721 case ZEBRA_IPTABLE_NOTIFY_OWNER
:
2722 if (zclient
->iptable_notify_owner
)
2723 (*zclient
->iptable_notify_owner
)(command
,
2727 case ZEBRA_VXLAN_SG_ADD
:
2728 if (zclient
->vxlan_sg_add
)
2729 (*zclient
->vxlan_sg_add
)(command
, zclient
, length
,
2732 case ZEBRA_VXLAN_SG_DEL
:
2733 if (zclient
->vxlan_sg_del
)
2734 (*zclient
->vxlan_sg_del
)(command
, zclient
, length
,
2741 if (zclient
->sock
< 0)
2742 /* Connection was closed during packet processing. */
2745 /* Register read thread. */
2746 stream_reset(zclient
->ibuf
);
2747 zclient_event(ZCLIENT_READ
, zclient
);
2752 void zclient_redistribute(int command
, struct zclient
*zclient
, afi_t afi
,
2753 int type
, unsigned short instance
, vrf_id_t vrf_id
)
2757 if (command
== ZEBRA_REDISTRIBUTE_ADD
) {
2758 if (redist_check_instance(
2759 &zclient
->mi_redist
[afi
][type
], instance
))
2761 redist_add_instance(&zclient
->mi_redist
[afi
][type
],
2764 if (!redist_check_instance(
2765 &zclient
->mi_redist
[afi
][type
], instance
))
2767 redist_del_instance(&zclient
->mi_redist
[afi
][type
],
2772 if (command
== ZEBRA_REDISTRIBUTE_ADD
) {
2773 if (vrf_bitmap_check(zclient
->redist
[afi
][type
],
2776 vrf_bitmap_set(zclient
->redist
[afi
][type
], vrf_id
);
2778 if (!vrf_bitmap_check(zclient
->redist
[afi
][type
],
2781 vrf_bitmap_unset(zclient
->redist
[afi
][type
], vrf_id
);
2785 if (zclient
->sock
> 0)
2786 zebra_redistribute_send(command
, zclient
, afi
, type
, instance
,
2791 void zclient_redistribute_default(int command
, struct zclient
*zclient
,
2792 afi_t afi
, vrf_id_t vrf_id
)
2795 if (command
== ZEBRA_REDISTRIBUTE_DEFAULT_ADD
) {
2796 if (vrf_bitmap_check(zclient
->default_information
[afi
], vrf_id
))
2798 vrf_bitmap_set(zclient
->default_information
[afi
], vrf_id
);
2800 if (!vrf_bitmap_check(zclient
->default_information
[afi
],
2803 vrf_bitmap_unset(zclient
->default_information
[afi
], vrf_id
);
2806 if (zclient
->sock
> 0)
2807 zebra_redistribute_default_send(command
, zclient
, afi
, vrf_id
);
2810 static void zclient_event(enum event event
, struct zclient
*zclient
)
2813 case ZCLIENT_SCHEDULE
:
2814 thread_add_event(zclient
->master
, zclient_connect
, zclient
, 0,
2815 &zclient
->t_connect
);
2817 case ZCLIENT_CONNECT
:
2820 "zclient connect failures: %d schedule interval is now %d",
2821 zclient
->fail
, zclient
->fail
< 3 ? 10 : 60);
2822 thread_add_timer(zclient
->master
, zclient_connect
, zclient
,
2823 zclient
->fail
< 3 ? 10 : 60,
2824 &zclient
->t_connect
);
2827 zclient
->t_read
= NULL
;
2828 thread_add_read(zclient
->master
, zclient_read
, zclient
,
2829 zclient
->sock
, &zclient
->t_read
);
2834 void zclient_interface_set_master(struct zclient
*client
,
2835 struct interface
*master
,
2836 struct interface
*slave
)
2843 zclient_create_header(s
, ZEBRA_INTERFACE_SET_MASTER
, master
->vrf_id
);
2845 stream_putl(s
, master
->vrf_id
);
2846 stream_putl(s
, master
->ifindex
);
2847 stream_putl(s
, slave
->vrf_id
);
2848 stream_putl(s
, slave
->ifindex
);
2850 stream_putw_at(s
, 0, stream_get_endp(s
));
2851 zclient_send_message(client
);