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"
42 DEFINE_MTYPE_STATIC(LIB
, ZCLIENT
, "Zclient")
43 DEFINE_MTYPE_STATIC(LIB
, REDIST_INST
, "Redistribution instance IDs")
45 /* Zebra client events. */
46 enum event
{ ZCLIENT_SCHEDULE
, ZCLIENT_READ
, ZCLIENT_CONNECT
};
48 /* Prototype for event manager. */
49 static void zclient_event(enum event
, struct zclient
*);
51 struct sockaddr_storage zclient_addr
;
52 socklen_t zclient_addr_len
;
54 /* This file local debug flag. */
55 int zclient_debug
= 0;
57 struct zclient_options zclient_options_default
= {.receive_notify
= false};
59 /* Allocate zclient structure. */
60 struct zclient
*zclient_new_notify(struct thread_master
*master
,
61 struct zclient_options
*opt
)
63 struct zclient
*zclient
;
64 zclient
= XCALLOC(MTYPE_ZCLIENT
, sizeof(struct zclient
));
66 zclient
->ibuf
= stream_new(ZEBRA_MAX_PACKET_SIZ
);
67 zclient
->obuf
= stream_new(ZEBRA_MAX_PACKET_SIZ
);
68 zclient
->wb
= buffer_new(0);
69 zclient
->master
= master
;
71 zclient
->receive_notify
= opt
->receive_notify
;
76 /* This function is only called when exiting, because
77 many parts of the code do not check for I/O errors, so they could
78 reference an invalid pointer if the structure was ever freed.
80 Free zclient structure. */
81 void zclient_free(struct zclient
*zclient
)
84 stream_free(zclient
->ibuf
);
86 stream_free(zclient
->obuf
);
88 buffer_free(zclient
->wb
);
90 XFREE(MTYPE_ZCLIENT
, zclient
);
93 unsigned short *redist_check_instance(struct redist_proto
*red
,
94 unsigned short instance
)
96 struct listnode
*node
;
102 for (ALL_LIST_ELEMENTS_RO(red
->instances
, node
, id
))
109 void redist_add_instance(struct redist_proto
*red
, unsigned short instance
)
116 red
->instances
= list_new();
118 in
= XMALLOC(MTYPE_REDIST_INST
, sizeof(unsigned short));
120 listnode_add(red
->instances
, in
);
123 void redist_del_instance(struct redist_proto
*red
, unsigned short instance
)
127 id
= redist_check_instance(red
, instance
);
131 listnode_delete(red
->instances
, id
);
132 XFREE(MTYPE_REDIST_INST
, id
);
133 if (!red
->instances
->count
) {
135 list_delete_and_null(&red
->instances
);
139 /* Stop zebra client services. */
140 void zclient_stop(struct zclient
*zclient
)
146 zlog_debug("zclient stopped");
149 THREAD_OFF(zclient
->t_read
);
150 THREAD_OFF(zclient
->t_connect
);
151 THREAD_OFF(zclient
->t_write
);
154 stream_reset(zclient
->ibuf
);
155 stream_reset(zclient
->obuf
);
157 /* Empty the write buffer. */
158 buffer_reset(zclient
->wb
);
161 if (zclient
->sock
>= 0) {
162 close(zclient
->sock
);
167 for (afi
= AFI_IP
; afi
< AFI_MAX
; afi
++) {
168 for (i
= 0; i
< ZEBRA_ROUTE_MAX
; i
++) {
169 vrf_bitmap_free(zclient
->redist
[afi
][i
]);
170 zclient
->redist
[afi
][i
] = VRF_BITMAP_NULL
;
173 &zclient
->mi_redist
[afi
][zclient
->redist_default
],
177 vrf_bitmap_free(zclient
->default_information
);
178 zclient
->default_information
= VRF_BITMAP_NULL
;
181 void zclient_reset(struct zclient
*zclient
)
185 zclient_stop(zclient
);
187 for (afi
= AFI_IP
; afi
< AFI_MAX
; afi
++)
189 &zclient
->mi_redist
[afi
][zclient
->redist_default
],
192 zclient_init(zclient
, zclient
->redist_default
, zclient
->instance
,
197 * Connect to zebra daemon.
198 * @param zclient a pointer to zclient structure
199 * @return socket fd just to make sure that connection established
201 * @see zclient_new_notify
203 int zclient_socket_connect(struct zclient
*zclient
)
208 /* We should think about IPv6 connection. */
209 sock
= socket(zclient_addr
.ss_family
, SOCK_STREAM
, 0);
215 zclient
->privs
->change(ZPRIVS_RAISE
);
216 setsockopt_so_sendbuf(sock
, 1048576);
217 zclient
->privs
->change(ZPRIVS_LOWER
);
219 /* Connect to zebra. */
220 ret
= connect(sock
, (struct sockaddr
*)&zclient_addr
, zclient_addr_len
);
223 zlog_warn("%s connect failure: %d(%s)",
224 __PRETTY_FUNCTION__
, errno
,
225 safe_strerror(errno
));
230 zclient
->sock
= sock
;
234 static int zclient_failed(struct zclient
*zclient
)
237 zclient_stop(zclient
);
238 zclient_event(ZCLIENT_CONNECT
, zclient
);
242 static int zclient_flush_data(struct thread
*thread
)
244 struct zclient
*zclient
= THREAD_ARG(thread
);
246 zclient
->t_write
= NULL
;
247 if (zclient
->sock
< 0)
249 switch (buffer_flush_available(zclient
->wb
, zclient
->sock
)) {
252 "%s: buffer_flush_available failed on zclient fd %d, closing",
253 __func__
, zclient
->sock
);
254 return zclient_failed(zclient
);
257 zclient
->t_write
= NULL
;
258 thread_add_write(zclient
->master
, zclient_flush_data
, zclient
,
259 zclient
->sock
, &zclient
->t_write
);
267 int zclient_send_message(struct zclient
*zclient
)
269 if (zclient
->sock
< 0)
271 switch (buffer_write(zclient
->wb
, zclient
->sock
,
272 STREAM_DATA(zclient
->obuf
),
273 stream_get_endp(zclient
->obuf
))) {
275 zlog_warn("%s: buffer_write failed to zclient fd %d, closing",
276 __func__
, zclient
->sock
);
277 return zclient_failed(zclient
);
280 THREAD_OFF(zclient
->t_write
);
283 thread_add_write(zclient
->master
, zclient_flush_data
, zclient
,
284 zclient
->sock
, &zclient
->t_write
);
290 void zclient_create_header(struct stream
*s
, uint16_t command
, vrf_id_t vrf_id
)
292 /* length placeholder, caller can update */
293 stream_putw(s
, ZEBRA_HEADER_SIZE
);
294 stream_putc(s
, ZEBRA_HEADER_MARKER
);
295 stream_putc(s
, ZSERV_VERSION
);
296 stream_putl(s
, vrf_id
);
297 stream_putw(s
, command
);
300 int zclient_read_header(struct stream
*s
, int sock
, uint16_t *size
,
301 uint8_t *marker
, uint8_t *version
, vrf_id_t
*vrf_id
,
304 if (stream_read(s
, sock
, ZEBRA_HEADER_SIZE
) != ZEBRA_HEADER_SIZE
)
307 STREAM_GETW(s
, *size
);
308 *size
-= ZEBRA_HEADER_SIZE
;
309 STREAM_GETC(s
, *marker
);
310 STREAM_GETC(s
, *version
);
311 STREAM_GETL(s
, *vrf_id
);
312 STREAM_GETW(s
, *cmd
);
314 if (*version
!= ZSERV_VERSION
|| *marker
!= ZEBRA_HEADER_MARKER
) {
316 "%s: socket %d version mismatch, marker %d, version %d",
317 __func__
, sock
, *marker
, *version
);
321 if (*size
&& stream_read(s
, sock
, *size
) != *size
)
328 bool zapi_parse_header(struct stream
*zmsg
, struct zmsghdr
*hdr
)
330 STREAM_GETW(zmsg
, hdr
->length
);
331 STREAM_GETC(zmsg
, hdr
->marker
);
332 STREAM_GETC(zmsg
, hdr
->version
);
333 STREAM_GETL(zmsg
, hdr
->vrf_id
);
334 STREAM_GETW(zmsg
, hdr
->command
);
340 /* Send simple Zebra message. */
341 static int zebra_message_send(struct zclient
*zclient
, int command
,
346 /* Get zclient output buffer. */
350 /* Send very simple command only Zebra message. */
351 zclient_create_header(s
, command
, vrf_id
);
353 return zclient_send_message(zclient
);
356 static int zebra_hello_send(struct zclient
*zclient
)
360 if (zclient
->redist_default
) {
364 /* The VRF ID in the HELLO message is always 0. */
365 zclient_create_header(s
, ZEBRA_HELLO
, VRF_DEFAULT
);
366 stream_putc(s
, zclient
->redist_default
);
367 stream_putw(s
, zclient
->instance
);
368 if (zclient
->receive_notify
)
373 stream_putw_at(s
, 0, stream_get_endp(s
));
374 return zclient_send_message(zclient
);
380 void zclient_send_vrf_label(struct zclient
*zclient
, vrf_id_t vrf_id
, afi_t afi
,
381 mpls_label_t label
, enum lsp_types_t ltype
)
388 zclient_create_header(s
, ZEBRA_VRF_LABEL
, vrf_id
);
389 stream_putl(s
, label
);
391 stream_putc(s
, ltype
);
392 stream_putw_at(s
, 0, stream_get_endp(s
));
393 zclient_send_message(zclient
);
396 /* Send register requests to zebra daemon for the information in a VRF. */
397 void zclient_send_reg_requests(struct zclient
*zclient
, vrf_id_t vrf_id
)
402 /* If not connected to the zebra yet. */
403 if (zclient
->sock
< 0)
407 zlog_debug("%s: send register messages for VRF %u", __func__
,
410 /* We need router-id information. */
411 zebra_message_send(zclient
, ZEBRA_ROUTER_ID_ADD
, vrf_id
);
413 /* We need interface information. */
414 zebra_message_send(zclient
, ZEBRA_INTERFACE_ADD
, vrf_id
);
416 /* Set unwanted redistribute route. */
417 for (afi
= AFI_IP
; afi
< AFI_MAX
; afi
++)
418 vrf_bitmap_set(zclient
->redist
[afi
][zclient
->redist_default
],
421 /* Flush all redistribute request. */
422 if (vrf_id
== VRF_DEFAULT
) {
423 for (afi
= AFI_IP
; afi
< AFI_MAX
; afi
++) {
424 for (i
= 0; i
< ZEBRA_ROUTE_MAX
; i
++) {
425 if (!zclient
->mi_redist
[afi
][i
].enabled
)
428 struct listnode
*node
;
431 for (ALL_LIST_ELEMENTS_RO(
432 zclient
->mi_redist
[afi
][i
]
435 if (!(i
== zclient
->redist_default
436 && *id
== zclient
->instance
))
437 zebra_redistribute_send(
438 ZEBRA_REDISTRIBUTE_ADD
,
439 zclient
, afi
, i
, *id
,
445 /* Resend all redistribute request. */
446 for (afi
= AFI_IP
; afi
< AFI_MAX
; afi
++)
447 for (i
= 0; i
< ZEBRA_ROUTE_MAX
; i
++)
448 if (i
!= zclient
->redist_default
449 && vrf_bitmap_check(zclient
->redist
[afi
][i
],
451 zebra_redistribute_send(ZEBRA_REDISTRIBUTE_ADD
,
455 /* If default information is needed. */
456 if (vrf_bitmap_check(zclient
->default_information
, VRF_DEFAULT
))
457 zebra_message_send(zclient
, ZEBRA_REDISTRIBUTE_DEFAULT_ADD
,
461 /* Send unregister requests to zebra daemon for the information in a VRF. */
462 void zclient_send_dereg_requests(struct zclient
*zclient
, vrf_id_t vrf_id
)
467 /* If not connected to the zebra yet. */
468 if (zclient
->sock
< 0)
472 zlog_debug("%s: send deregister messages for VRF %u", __func__
,
475 /* We need router-id information. */
476 zebra_message_send(zclient
, ZEBRA_ROUTER_ID_DELETE
, vrf_id
);
478 /* We need interface information. */
479 zebra_message_send(zclient
, ZEBRA_INTERFACE_DELETE
, vrf_id
);
481 /* Set unwanted redistribute route. */
482 for (afi
= AFI_IP
; afi
< AFI_MAX
; afi
++)
483 vrf_bitmap_unset(zclient
->redist
[afi
][zclient
->redist_default
],
486 /* Flush all redistribute request. */
487 if (vrf_id
== VRF_DEFAULT
) {
488 for (afi
= AFI_IP
; afi
< AFI_MAX
; afi
++) {
489 for (i
= 0; i
< ZEBRA_ROUTE_MAX
; i
++) {
490 if (!zclient
->mi_redist
[afi
][i
].enabled
)
493 struct listnode
*node
;
496 for (ALL_LIST_ELEMENTS_RO(
497 zclient
->mi_redist
[afi
][i
]
500 if (!(i
== zclient
->redist_default
501 && *id
== zclient
->instance
))
502 zebra_redistribute_send(
503 ZEBRA_REDISTRIBUTE_DELETE
,
504 zclient
, afi
, i
, *id
,
510 /* Flush all redistribute request. */
511 for (afi
= AFI_IP
; afi
< AFI_MAX
; afi
++)
512 for (i
= 0; i
< ZEBRA_ROUTE_MAX
; i
++)
513 if (i
!= zclient
->redist_default
514 && vrf_bitmap_check(zclient
->redist
[afi
][i
],
516 zebra_redistribute_send(
517 ZEBRA_REDISTRIBUTE_DELETE
, zclient
, afi
,
520 /* If default information is needed. */
521 if (vrf_bitmap_check(zclient
->default_information
, VRF_DEFAULT
))
522 zebra_message_send(zclient
, ZEBRA_REDISTRIBUTE_DEFAULT_DELETE
,
526 /* Send request to zebra daemon to start or stop RA. */
527 void zclient_send_interface_radv_req(struct zclient
*zclient
, vrf_id_t vrf_id
,
528 struct interface
*ifp
, int enable
,
533 /* If not connected to the zebra yet. */
534 if (zclient
->sock
< 0)
537 /* Form and send message. */
542 zclient_create_header(s
, ZEBRA_INTERFACE_ENABLE_RADV
, vrf_id
);
544 zclient_create_header(s
, ZEBRA_INTERFACE_DISABLE_RADV
, vrf_id
);
546 stream_putl(s
, ifp
->ifindex
);
547 stream_putl(s
, ra_interval
);
549 stream_putw_at(s
, 0, stream_get_endp(s
));
551 zclient_send_message(zclient
);
554 /* Make connection to zebra daemon. */
555 int zclient_start(struct zclient
*zclient
)
558 zlog_info("zclient_start is called");
560 /* If already connected to the zebra. */
561 if (zclient
->sock
>= 0)
564 /* Check connect thread. */
565 if (zclient
->t_connect
)
568 if (zclient_socket_connect(zclient
) < 0) {
570 zlog_debug("zclient connection fail");
572 zclient_event(ZCLIENT_CONNECT
, zclient
);
576 if (set_nonblocking(zclient
->sock
) < 0)
577 zlog_warn("%s: set_nonblocking(%d) failed", __func__
,
580 /* Clear fail count. */
583 zlog_debug("zclient connect success with socket [%d]",
586 /* Create read thread. */
587 zclient_event(ZCLIENT_READ
, zclient
);
589 zebra_hello_send(zclient
);
591 /* Inform the successful connection. */
592 if (zclient
->zebra_connected
)
593 (*zclient
->zebra_connected
)(zclient
);
598 /* Initialize zebra client. Argument redist_default is unwanted
599 redistribute route type. */
600 void zclient_init(struct zclient
*zclient
, int redist_default
,
601 unsigned short instance
, struct zebra_privs_t
*privs
)
605 /* Set -1 to the default socket value. */
607 zclient
->privs
= privs
;
609 /* Clear redistribution flags. */
610 for (afi
= AFI_IP
; afi
< AFI_MAX
; afi
++)
611 for (i
= 0; i
< ZEBRA_ROUTE_MAX
; i
++)
612 zclient
->redist
[afi
][i
] = vrf_bitmap_init();
614 /* Set unwanted redistribute route. bgpd does not need BGP route
616 zclient
->redist_default
= redist_default
;
617 zclient
->instance
= instance
;
618 /* Pending: make afi(s) an arg. */
619 for (afi
= AFI_IP
; afi
< AFI_MAX
; afi
++)
620 redist_add_instance(&zclient
->mi_redist
[afi
][redist_default
],
623 /* Set default-information redistribute to zero. */
624 zclient
->default_information
= vrf_bitmap_init();
627 zlog_debug("zclient_start is called");
629 zclient_event(ZCLIENT_SCHEDULE
, zclient
);
632 /* This function is a wrapper function for calling zclient_start from
633 timer or event thread. */
634 static int zclient_connect(struct thread
*t
)
636 struct zclient
*zclient
;
638 zclient
= THREAD_ARG(t
);
639 zclient
->t_connect
= NULL
;
642 zlog_debug("zclient_connect is called");
644 return zclient_start(zclient
);
647 int zclient_send_rnh(struct zclient
*zclient
, int command
, struct prefix
*p
,
648 bool exact_match
, vrf_id_t vrf_id
)
654 zclient_create_header(s
, command
, vrf_id
);
655 stream_putc(s
, (exact_match
) ? 1 : 0);
657 stream_putw(s
, PREFIX_FAMILY(p
));
658 stream_putc(s
, p
->prefixlen
);
659 switch (PREFIX_FAMILY(p
)) {
661 stream_put_in_addr(s
, &p
->u
.prefix4
);
664 stream_put(s
, &(p
->u
.prefix6
), 16);
669 stream_putw_at(s
, 0, stream_get_endp(s
));
671 return zclient_send_message(zclient
);
675 * "xdr_encode"-like interface that allows daemon (client) to send
676 * a message to zebra server for a route that needs to be
677 * added/deleted to the kernel. Info about the route is specified
678 * by the caller in a struct zapi_ipv4. zapi_ipv4_read() then writes
679 * the info down the zclient socket using the stream_* functions.
681 * The corresponding read ("xdr_decode") function on the server
682 * side is zread_ipv4_add()/zread_ipv4_delete().
684 * 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
685 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
686 * | Length (2) | Command | Route Type |
687 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
688 * | ZEBRA Flags | Message Flags | Prefix length |
689 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
690 * | Destination IPv4 Prefix for route |
691 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
696 * A number of IPv4 nexthop(s) or nexthop interface index(es) are then
697 * described, as per the Nexthop count. Each nexthop described as:
700 * | Nexthop Type | Set to one of ZEBRA_NEXTHOP_*
701 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
702 * | IPv4 Nexthop address or Interface Index number |
703 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
705 * Alternatively, if the route is a blackhole route, then Nexthop count
706 * is set to 1 and a nexthop of type NEXTHOP_TYPE_BLACKHOLE is the sole
709 * The original struct zapi_ipv4, zapi_ipv4_route() and zread_ipv4_*()
710 * infrastructure was built around the traditional (32-bit "gate OR
711 * ifindex") nexthop data unit. A special encoding can be used to feed
712 * onlink (64-bit "gate AND ifindex") nexthops into zapi_ipv4_route()
713 * using the same zapi_ipv4 structure. This is done by setting zapi_ipv4
715 * - .message |= ZAPI_MESSAGE_NEXTHOP | ZAPI_MESSAGE_ONLINK
716 * - .nexthop_num == .ifindex_num
717 * - .nexthop and .ifindex are filled with gate and ifindex parts of
718 * each compound nexthop, both in the same order
720 * zapi_ipv4_route() will produce two nexthop data units for each such
721 * interleaved 64-bit nexthop. On the zserv side of the socket it will be
722 * mapped to a singlle NEXTHOP_TYPE_IPV4_IFINDEX_OL RIB nexthop structure.
724 * If ZAPI_MESSAGE_DISTANCE is set, the distance value is written as a 1
727 * If ZAPI_MESSAGE_METRIC is set, the metric value is written as an 8
730 * If ZAPI_MESSAGE_TAG is set, the tag value is written as a 4 byte value
732 * If ZAPI_MESSAGE_MTU is set, the mtu value is written as a 4 byte value
734 * XXX: No attention paid to alignment.
736 int zapi_ipv4_route(uint8_t cmd
, struct zclient
*zclient
, struct prefix_ipv4
*p
,
737 struct zapi_ipv4
*api
)
747 /* Some checks for labeled-unicast. The current expectation is that each
748 * nexthop is accompanied by a label in the case of labeled-unicast.
750 if (CHECK_FLAG(api
->message
, ZAPI_MESSAGE_LABEL
)
751 && CHECK_FLAG(api
->message
, ZAPI_MESSAGE_NEXTHOP
)) {
752 /* We expect prefixes installed with labels and the number to
754 * the number of nexthops.
756 assert(api
->label_num
== api
->nexthop_num
);
759 zclient_create_header(s
, cmd
, api
->vrf_id
);
761 /* Put type and nexthop. */
762 stream_putc(s
, api
->type
);
763 stream_putw(s
, api
->instance
);
764 stream_putl(s
, api
->flags
);
765 stream_putc(s
, api
->message
);
766 stream_putw(s
, api
->safi
);
768 /* Put prefix information. */
769 psize
= PSIZE(p
->prefixlen
);
770 stream_putc(s
, p
->prefixlen
);
771 stream_write(s
, (uint8_t *)&p
->prefix
, psize
);
773 /* Nexthop, ifindex, distance and metric information. */
774 if (CHECK_FLAG(api
->message
, ZAPI_MESSAGE_NEXTHOP
)) {
775 stream_putc(s
, api
->nexthop_num
+ api
->ifindex_num
);
777 for (i
= 0; i
< api
->nexthop_num
; i
++) {
778 stream_putc(s
, NEXTHOP_TYPE_IPV4
);
779 stream_put_in_addr(s
, api
->nexthop
[i
]);
780 /* For labeled-unicast, each nexthop is followed by
782 if (CHECK_FLAG(api
->message
, ZAPI_MESSAGE_LABEL
))
783 stream_putl(s
, api
->label
[i
]);
785 for (i
= 0; i
< api
->ifindex_num
; i
++) {
786 stream_putc(s
, NEXTHOP_TYPE_IFINDEX
);
787 stream_putl(s
, api
->ifindex
[i
]);
791 if (CHECK_FLAG(api
->message
, ZAPI_MESSAGE_DISTANCE
))
792 stream_putc(s
, api
->distance
);
793 if (CHECK_FLAG(api
->message
, ZAPI_MESSAGE_METRIC
))
794 stream_putl(s
, api
->metric
);
795 if (CHECK_FLAG(api
->message
, ZAPI_MESSAGE_TAG
))
796 stream_putl(s
, api
->tag
);
797 if (CHECK_FLAG(api
->message
, ZAPI_MESSAGE_MTU
))
798 stream_putl(s
, api
->mtu
);
800 /* Put length at the first point of the stream. */
801 stream_putw_at(s
, 0, stream_get_endp(s
));
803 return zclient_send_message(zclient
);
806 int zapi_ipv4_route_ipv6_nexthop(uint8_t cmd
, struct zclient
*zclient
,
807 struct prefix_ipv4
*p
, struct zapi_ipv6
*api
)
817 /* Some checks for labeled-unicast. The current expectation is that each
818 * nexthop is accompanied by a label in the case of labeled-unicast.
820 if (CHECK_FLAG(api
->message
, ZAPI_MESSAGE_LABEL
)
821 && CHECK_FLAG(api
->message
, ZAPI_MESSAGE_NEXTHOP
)) {
822 /* We expect prefixes installed with labels and the number to
824 * the number of nexthops.
826 assert(api
->label_num
== api
->nexthop_num
);
829 zclient_create_header(s
, cmd
, api
->vrf_id
);
831 /* Put type and nexthop. */
832 stream_putc(s
, api
->type
);
833 stream_putw(s
, api
->instance
);
834 stream_putl(s
, api
->flags
);
835 stream_putc(s
, api
->message
);
836 stream_putw(s
, api
->safi
);
838 /* Put prefix information. */
839 psize
= PSIZE(p
->prefixlen
);
840 stream_putc(s
, p
->prefixlen
);
841 stream_write(s
, (uint8_t *)&p
->prefix
, psize
);
843 /* Nexthop, ifindex, distance and metric information. */
844 if (CHECK_FLAG(api
->message
, ZAPI_MESSAGE_NEXTHOP
)) {
845 stream_putc(s
, api
->nexthop_num
+ api
->ifindex_num
);
847 for (i
= 0; i
< api
->nexthop_num
; i
++) {
848 stream_putc(s
, NEXTHOP_TYPE_IPV6
);
849 stream_write(s
, (uint8_t *)api
->nexthop
[i
], 16);
850 /* For labeled-unicast, each nexthop is followed by
852 if (CHECK_FLAG(api
->message
, ZAPI_MESSAGE_LABEL
))
853 stream_putl(s
, api
->label
[i
]);
855 for (i
= 0; i
< api
->ifindex_num
; i
++) {
856 stream_putc(s
, NEXTHOP_TYPE_IFINDEX
);
857 stream_putl(s
, api
->ifindex
[i
]);
861 if (CHECK_FLAG(api
->message
, ZAPI_MESSAGE_DISTANCE
))
862 stream_putc(s
, api
->distance
);
863 if (CHECK_FLAG(api
->message
, ZAPI_MESSAGE_METRIC
))
864 stream_putl(s
, api
->metric
);
865 if (CHECK_FLAG(api
->message
, ZAPI_MESSAGE_TAG
))
866 stream_putl(s
, api
->tag
);
867 if (CHECK_FLAG(api
->message
, ZAPI_MESSAGE_MTU
))
868 stream_putl(s
, api
->mtu
);
870 /* Put length at the first point of the stream. */
871 stream_putw_at(s
, 0, stream_get_endp(s
));
873 return zclient_send_message(zclient
);
876 int zapi_ipv6_route(uint8_t cmd
, struct zclient
*zclient
, struct prefix_ipv6
*p
,
877 struct prefix_ipv6
*src_p
, struct zapi_ipv6
*api
)
883 /* either we have !SRCPFX && src_p == NULL, or SRCPFX && src_p != NULL
885 assert(!(api
->message
& ZAPI_MESSAGE_SRCPFX
) == !src_p
);
891 /* Some checks for labeled-unicast. The current expectation is that each
892 * nexthop is accompanied by a label in the case of labeled-unicast.
894 if (CHECK_FLAG(api
->message
, ZAPI_MESSAGE_LABEL
)
895 && CHECK_FLAG(api
->message
, ZAPI_MESSAGE_NEXTHOP
)) {
896 /* We expect prefixes installed with labels and the number to
898 * the number of nexthops.
900 assert(api
->label_num
== api
->nexthop_num
);
903 zclient_create_header(s
, cmd
, api
->vrf_id
);
905 /* Put type and nexthop. */
906 stream_putc(s
, api
->type
);
907 stream_putw(s
, api
->instance
);
908 stream_putl(s
, api
->flags
);
909 stream_putc(s
, api
->message
);
910 stream_putw(s
, api
->safi
);
912 /* Put prefix information. */
913 psize
= PSIZE(p
->prefixlen
);
914 stream_putc(s
, p
->prefixlen
);
915 stream_write(s
, (uint8_t *)&p
->prefix
, psize
);
917 if (CHECK_FLAG(api
->message
, ZAPI_MESSAGE_SRCPFX
)) {
918 psize
= PSIZE(src_p
->prefixlen
);
919 stream_putc(s
, src_p
->prefixlen
);
920 stream_write(s
, (uint8_t *)&src_p
->prefix
, psize
);
923 /* Nexthop, ifindex, distance and metric information. */
924 if (CHECK_FLAG(api
->message
, ZAPI_MESSAGE_NEXTHOP
)) {
925 stream_putc(s
, api
->nexthop_num
+ api
->ifindex_num
);
927 for (i
= 0; i
< api
->nexthop_num
; i
++) {
928 stream_putc(s
, NEXTHOP_TYPE_IPV6
);
929 stream_write(s
, (uint8_t *)api
->nexthop
[i
], 16);
930 /* For labeled-unicast, each nexthop is followed by
932 if (CHECK_FLAG(api
->message
, ZAPI_MESSAGE_LABEL
))
933 stream_putl(s
, api
->label
[i
]);
935 for (i
= 0; i
< api
->ifindex_num
; i
++) {
936 stream_putc(s
, NEXTHOP_TYPE_IFINDEX
);
937 stream_putl(s
, api
->ifindex
[i
]);
941 if (CHECK_FLAG(api
->message
, ZAPI_MESSAGE_DISTANCE
))
942 stream_putc(s
, api
->distance
);
943 if (CHECK_FLAG(api
->message
, ZAPI_MESSAGE_METRIC
))
944 stream_putl(s
, api
->metric
);
945 if (CHECK_FLAG(api
->message
, ZAPI_MESSAGE_TAG
))
946 stream_putl(s
, api
->tag
);
947 if (CHECK_FLAG(api
->message
, ZAPI_MESSAGE_MTU
))
948 stream_putl(s
, api
->mtu
);
950 /* Put length at the first point of the stream. */
951 stream_putw_at(s
, 0, stream_get_endp(s
));
953 return zclient_send_message(zclient
);
956 int zclient_route_send(uint8_t cmd
, struct zclient
*zclient
,
957 struct zapi_route
*api
)
959 if (zapi_route_encode(cmd
, zclient
->obuf
, api
) < 0)
961 return zclient_send_message(zclient
);
964 int zapi_route_encode(uint8_t cmd
, struct stream
*s
, struct zapi_route
*api
)
966 struct zapi_nexthop
*api_nh
;
971 zclient_create_header(s
, cmd
, api
->vrf_id
);
973 stream_putc(s
, api
->type
);
974 stream_putw(s
, api
->instance
);
975 stream_putl(s
, api
->flags
);
976 stream_putc(s
, api
->message
);
977 stream_putc(s
, api
->safi
);
979 /* Put prefix information. */
980 stream_putc(s
, api
->prefix
.family
);
981 psize
= PSIZE(api
->prefix
.prefixlen
);
982 stream_putc(s
, api
->prefix
.prefixlen
);
983 stream_write(s
, (uint8_t *)&api
->prefix
.u
.prefix
, psize
);
985 if (CHECK_FLAG(api
->message
, ZAPI_MESSAGE_SRCPFX
)) {
986 psize
= PSIZE(api
->src_prefix
.prefixlen
);
987 stream_putc(s
, api
->src_prefix
.prefixlen
);
988 stream_write(s
, (uint8_t *)&api
->src_prefix
.prefix
, psize
);
992 if (CHECK_FLAG(api
->message
, ZAPI_MESSAGE_NEXTHOP
)) {
993 /* limit the number of nexthops if necessary */
994 if (api
->nexthop_num
> MULTIPATH_NUM
) {
995 char buf
[PREFIX2STR_BUFFER
];
997 prefix2str(&api
->prefix
, buf
, sizeof(buf
));
999 "%s: prefix %s: can't encode %u nexthops "
1001 __func__
, buf
, api
->nexthop_num
, MULTIPATH_NUM
);
1005 stream_putw(s
, api
->nexthop_num
);
1007 for (i
= 0; i
< api
->nexthop_num
; i
++) {
1008 api_nh
= &api
->nexthops
[i
];
1010 stream_putl(s
, api_nh
->vrf_id
);
1011 stream_putc(s
, api_nh
->type
);
1012 switch (api_nh
->type
) {
1013 case NEXTHOP_TYPE_BLACKHOLE
:
1014 stream_putc(s
, api_nh
->bh_type
);
1016 case NEXTHOP_TYPE_IPV4
:
1017 stream_put_in_addr(s
, &api_nh
->gate
.ipv4
);
1019 case NEXTHOP_TYPE_IPV4_IFINDEX
:
1020 stream_put_in_addr(s
, &api_nh
->gate
.ipv4
);
1021 stream_putl(s
, api_nh
->ifindex
);
1023 case NEXTHOP_TYPE_IFINDEX
:
1024 stream_putl(s
, api_nh
->ifindex
);
1026 case NEXTHOP_TYPE_IPV6
:
1027 stream_write(s
, (uint8_t *)&api_nh
->gate
.ipv6
,
1030 case NEXTHOP_TYPE_IPV6_IFINDEX
:
1031 stream_write(s
, (uint8_t *)&api_nh
->gate
.ipv6
,
1033 stream_putl(s
, api_nh
->ifindex
);
1037 "%s: Specified Nexthop type %d does not exist",
1038 __PRETTY_FUNCTION__
, api_nh
->type
);
1042 /* MPLS labels for BGP-LU or Segment Routing */
1043 if (CHECK_FLAG(api
->message
, ZAPI_MESSAGE_LABEL
)) {
1044 if (api_nh
->label_num
> MPLS_MAX_LABELS
) {
1045 char buf
[PREFIX2STR_BUFFER
];
1046 prefix2str(&api
->prefix
, buf
,
1049 "%s: prefix %s: can't encode "
1050 "%u labels (maximum is %u)",
1057 stream_putc(s
, api_nh
->label_num
);
1058 stream_put(s
, &api_nh
->labels
[0],
1060 * sizeof(mpls_label_t
));
1063 /* Router MAC for EVPN routes. */
1064 if (CHECK_FLAG(api
->flags
, ZEBRA_FLAG_EVPN_ROUTE
))
1065 stream_put(s
, &(api_nh
->rmac
),
1066 sizeof(struct ethaddr
));
1071 if (CHECK_FLAG(api
->message
, ZAPI_MESSAGE_DISTANCE
))
1072 stream_putc(s
, api
->distance
);
1073 if (CHECK_FLAG(api
->message
, ZAPI_MESSAGE_METRIC
))
1074 stream_putl(s
, api
->metric
);
1075 if (CHECK_FLAG(api
->message
, ZAPI_MESSAGE_TAG
))
1076 stream_putl(s
, api
->tag
);
1077 if (CHECK_FLAG(api
->message
, ZAPI_MESSAGE_MTU
))
1078 stream_putl(s
, api
->mtu
);
1079 if (CHECK_FLAG(api
->message
, ZAPI_MESSAGE_TABLEID
))
1080 stream_putl(s
, api
->tableid
);
1082 /* Put length at the first point of the stream. */
1083 stream_putw_at(s
, 0, stream_get_endp(s
));
1088 int zapi_route_decode(struct stream
*s
, struct zapi_route
*api
)
1090 struct zapi_nexthop
*api_nh
;
1093 memset(api
, 0, sizeof(*api
));
1095 /* Type, flags, message. */
1096 STREAM_GETC(s
, api
->type
);
1097 if (api
->type
> ZEBRA_ROUTE_MAX
) {
1098 zlog_warn("%s: Specified route type: %d is not a legal value\n",
1099 __PRETTY_FUNCTION__
, api
->type
);
1103 STREAM_GETW(s
, api
->instance
);
1104 STREAM_GETL(s
, api
->flags
);
1105 STREAM_GETC(s
, api
->message
);
1106 STREAM_GETC(s
, api
->safi
);
1109 STREAM_GETC(s
, api
->prefix
.family
);
1110 STREAM_GETC(s
, api
->prefix
.prefixlen
);
1111 switch (api
->prefix
.family
) {
1113 if (api
->prefix
.prefixlen
> IPV4_MAX_PREFIXLEN
) {
1115 "%s: V4 prefixlen is %d which should not be more than 32",
1116 __PRETTY_FUNCTION__
, api
->prefix
.prefixlen
);
1121 if (api
->prefix
.prefixlen
> IPV6_MAX_PREFIXLEN
) {
1123 "%s: v6 prefixlen is %d which should not be more than 128",
1124 __PRETTY_FUNCTION__
, api
->prefix
.prefixlen
);
1129 zlog_warn("%s: Specified family %d is not v4 or v6",
1130 __PRETTY_FUNCTION__
, api
->prefix
.family
);
1133 STREAM_GET(&api
->prefix
.u
.prefix
, s
, PSIZE(api
->prefix
.prefixlen
));
1135 if (CHECK_FLAG(api
->message
, ZAPI_MESSAGE_SRCPFX
)) {
1136 api
->src_prefix
.family
= AF_INET6
;
1137 STREAM_GETC(s
, api
->src_prefix
.prefixlen
);
1138 if (api
->src_prefix
.prefixlen
> IPV6_MAX_PREFIXLEN
) {
1140 "%s: SRC Prefix prefixlen received: %d is too large",
1141 __PRETTY_FUNCTION__
, api
->src_prefix
.prefixlen
);
1144 STREAM_GET(&api
->src_prefix
.prefix
, s
,
1145 PSIZE(api
->src_prefix
.prefixlen
));
1147 if (api
->prefix
.family
!= AF_INET6
1148 || api
->src_prefix
.prefixlen
== 0) {
1150 "%s: SRC prefix specified in some manner that makes no sense",
1151 __PRETTY_FUNCTION__
);
1157 if (CHECK_FLAG(api
->message
, ZAPI_MESSAGE_NEXTHOP
)) {
1158 STREAM_GETW(s
, api
->nexthop_num
);
1159 if (api
->nexthop_num
> MULTIPATH_NUM
) {
1160 zlog_warn("%s: invalid number of nexthops (%u)",
1161 __func__
, api
->nexthop_num
);
1165 for (i
= 0; i
< api
->nexthop_num
; i
++) {
1166 api_nh
= &api
->nexthops
[i
];
1168 STREAM_GETL(s
, api_nh
->vrf_id
);
1169 STREAM_GETC(s
, api_nh
->type
);
1170 switch (api_nh
->type
) {
1171 case NEXTHOP_TYPE_BLACKHOLE
:
1172 STREAM_GETC(s
, api_nh
->bh_type
);
1174 case NEXTHOP_TYPE_IPV4
:
1175 STREAM_GET(&api_nh
->gate
.ipv4
.s_addr
, s
,
1178 case NEXTHOP_TYPE_IPV4_IFINDEX
:
1179 STREAM_GET(&api_nh
->gate
.ipv4
.s_addr
, s
,
1181 STREAM_GETL(s
, api_nh
->ifindex
);
1183 case NEXTHOP_TYPE_IFINDEX
:
1184 STREAM_GETL(s
, api_nh
->ifindex
);
1186 case NEXTHOP_TYPE_IPV6
:
1187 STREAM_GET(&api_nh
->gate
.ipv6
, s
, 16);
1189 case NEXTHOP_TYPE_IPV6_IFINDEX
:
1190 STREAM_GET(&api_nh
->gate
.ipv6
, s
, 16);
1191 STREAM_GETL(s
, api_nh
->ifindex
);
1195 "%s: Specified nexthop type %d does not exist",
1196 __PRETTY_FUNCTION__
, api_nh
->type
);
1200 /* MPLS labels for BGP-LU or Segment Routing */
1201 if (CHECK_FLAG(api
->message
, ZAPI_MESSAGE_LABEL
)) {
1202 STREAM_GETC(s
, api_nh
->label_num
);
1204 if (api_nh
->label_num
> MPLS_MAX_LABELS
) {
1206 "%s: invalid number of MPLS "
1208 __func__
, api_nh
->label_num
);
1212 STREAM_GET(&api_nh
->labels
[0], s
,
1214 * sizeof(mpls_label_t
));
1217 /* Router MAC for EVPN routes. */
1218 if (CHECK_FLAG(api
->flags
, ZEBRA_FLAG_EVPN_ROUTE
))
1219 stream_get(&(api_nh
->rmac
), s
,
1220 sizeof(struct ethaddr
));
1225 if (CHECK_FLAG(api
->message
, ZAPI_MESSAGE_DISTANCE
))
1226 STREAM_GETC(s
, api
->distance
);
1227 if (CHECK_FLAG(api
->message
, ZAPI_MESSAGE_METRIC
))
1228 STREAM_GETL(s
, api
->metric
);
1229 if (CHECK_FLAG(api
->message
, ZAPI_MESSAGE_TAG
))
1230 STREAM_GETL(s
, api
->tag
);
1231 if (CHECK_FLAG(api
->message
, ZAPI_MESSAGE_MTU
))
1232 STREAM_GETL(s
, api
->mtu
);
1233 if (CHECK_FLAG(api
->message
, ZAPI_MESSAGE_TABLEID
))
1234 STREAM_GETL(s
, api
->tableid
);
1240 static void zapi_encode_prefix(struct stream
*s
,
1247 memset(&any
, 0, sizeof(any
));
1248 any
.family
= family
;
1252 stream_putc(s
, p
->family
);
1253 stream_putc(s
, p
->prefixlen
);
1254 stream_put(s
, &p
->u
.prefix
, prefix_blen(p
));
1257 int zapi_pbr_rule_encode(uint8_t cmd
, struct stream
*s
,
1258 struct pbr_rule
*zrule
)
1261 zclient_create_header(s
, cmd
, zrule
->vrf_id
);
1264 * We are sending one item at a time at the moment
1268 stream_putl(s
, zrule
->seq
);
1269 stream_putl(s
, zrule
->priority
);
1270 stream_putl(s
, zrule
->unique
);
1272 zapi_encode_prefix(s
, &(zrule
->filter
.src_ip
),
1273 zrule
->filter
.src_ip
.family
);
1274 stream_putw(s
, zrule
->filter
.src_port
); /* src port */
1275 zapi_encode_prefix(s
, &(zrule
->filter
.dst_ip
),
1276 zrule
->filter
.src_ip
.family
);
1277 stream_putw(s
, zrule
->filter
.dst_port
); /* dst port */
1278 stream_putw(s
, zrule
->filter
.fwmark
); /* fwmark */
1280 stream_putl(s
, zrule
->action
.table
);
1281 stream_putl(s
, zrule
->ifindex
);
1283 /* Put length at the first point of the stream. */
1284 stream_putw_at(s
, 0, stream_get_endp(s
));
1289 bool zapi_route_notify_decode(struct stream
*s
, struct prefix
*p
,
1291 enum zapi_route_notify_owner
*note
)
1295 STREAM_GET(note
, s
, sizeof(*note
));
1297 STREAM_GETC(s
, p
->family
);
1298 STREAM_GETC(s
, p
->prefixlen
);
1299 STREAM_GET(&p
->u
.prefix
, s
, prefix_blen(p
));
1310 bool zapi_rule_notify_decode(struct stream
*s
, uint32_t *seqno
,
1311 uint32_t *priority
, uint32_t *unique
,
1313 enum zapi_rule_notify_owner
*note
)
1315 uint32_t prio
, seq
, uni
;
1318 STREAM_GET(note
, s
, sizeof(*note
));
1320 STREAM_GETL(s
, seq
);
1321 STREAM_GETL(s
, prio
);
1322 STREAM_GETL(s
, uni
);
1323 STREAM_GETL(s
, ifi
);
1326 zlog_debug("%s: %u %u %u %u", __PRETTY_FUNCTION__
,
1327 seq
, prio
, uni
, ifi
);
1339 bool zapi_ipset_notify_decode(struct stream
*s
,
1341 enum zapi_ipset_notify_owner
*note
)
1345 STREAM_GET(note
, s
, sizeof(*note
));
1347 STREAM_GETL(s
, uni
);
1350 zlog_debug("%s: %u", __PRETTY_FUNCTION__
, uni
);
1359 bool zapi_ipset_entry_notify_decode(struct stream
*s
,
1362 enum zapi_ipset_entry_notify_owner
*note
)
1366 STREAM_GET(note
, s
, sizeof(*note
));
1368 STREAM_GETL(s
, uni
);
1370 STREAM_GET(ipset_name
, s
,
1371 ZEBRA_IPSET_NAME_SIZE
);
1374 zlog_debug("%s: %u", __PRETTY_FUNCTION__
, uni
);
1383 bool zapi_iptable_notify_decode(struct stream
*s
,
1385 enum zapi_iptable_notify_owner
*note
)
1389 STREAM_GET(note
, s
, sizeof(*note
));
1391 STREAM_GETL(s
, uni
);
1394 zlog_debug("%s: %u", __PRETTY_FUNCTION__
, uni
);
1403 struct nexthop
*nexthop_from_zapi_nexthop(struct zapi_nexthop
*znh
)
1405 struct nexthop
*n
= nexthop_new();
1407 n
->type
= znh
->type
;
1408 n
->vrf_id
= znh
->vrf_id
;
1409 n
->ifindex
= znh
->ifindex
;
1410 n
->gate
= znh
->gate
;
1413 * This function currently handles labels
1415 if (znh
->label_num
) {
1416 nexthop_add_labels(n
, ZEBRA_LSP_NONE
, znh
->label_num
,
1423 bool zapi_nexthop_update_decode(struct stream
*s
, struct zapi_route
*nhr
)
1427 memset(nhr
, 0, sizeof(*nhr
));
1429 STREAM_GETW(s
, nhr
->prefix
.family
);
1430 STREAM_GETC(s
, nhr
->prefix
.prefixlen
);
1431 switch (nhr
->prefix
.family
) {
1433 STREAM_GET(&nhr
->prefix
.u
.prefix4
.s_addr
, s
, IPV4_MAX_BYTELEN
);
1436 STREAM_GET(&nhr
->prefix
.u
.prefix6
, s
, IPV6_MAX_BYTELEN
);
1442 STREAM_GETC(s
, nhr
->type
);
1443 STREAM_GETW(s
, nhr
->instance
);
1444 STREAM_GETC(s
, nhr
->distance
);
1445 STREAM_GETL(s
, nhr
->metric
);
1446 STREAM_GETC(s
, nhr
->nexthop_num
);
1448 for (i
= 0; i
< nhr
->nexthop_num
; i
++) {
1449 STREAM_GETC(s
, nhr
->nexthops
[i
].type
);
1450 switch (nhr
->nexthops
[i
].type
) {
1451 case NEXTHOP_TYPE_IPV4
:
1452 case NEXTHOP_TYPE_IPV4_IFINDEX
:
1453 STREAM_GET(&nhr
->nexthops
[i
].gate
.ipv4
.s_addr
, s
,
1455 STREAM_GETL(s
, nhr
->nexthops
[i
].ifindex
);
1457 case NEXTHOP_TYPE_IFINDEX
:
1458 STREAM_GETL(s
, nhr
->nexthops
[i
].ifindex
);
1460 case NEXTHOP_TYPE_IPV6
:
1461 case NEXTHOP_TYPE_IPV6_IFINDEX
:
1462 STREAM_GET(&nhr
->nexthops
[i
].gate
.ipv6
, s
,
1464 STREAM_GETL(s
, nhr
->nexthops
[i
].ifindex
);
1466 case NEXTHOP_TYPE_BLACKHOLE
:
1469 STREAM_GETC(s
, nhr
->nexthops
[i
].label_num
);
1470 if (nhr
->nexthops
[i
].label_num
> MPLS_MAX_LABELS
) {
1471 zlog_warn("%s: invalid number of MPLS labels (%u)",
1472 __func__
, nhr
->nexthops
[i
].label_num
);
1475 if (nhr
->nexthops
[i
].label_num
)
1476 STREAM_GET(&nhr
->nexthops
[i
].labels
[0], s
,
1477 nhr
->nexthops
[i
].label_num
1478 * sizeof(mpls_label_t
));
1487 * send a ZEBRA_REDISTRIBUTE_ADD or ZEBRA_REDISTRIBUTE_DELETE
1488 * for the route type (ZEBRA_ROUTE_KERNEL etc.). The zebra server will
1489 * then set/unset redist[type] in the client handle (a struct zserv) for the
1492 int zebra_redistribute_send(int command
, struct zclient
*zclient
, afi_t afi
,
1493 int type
, unsigned short instance
, vrf_id_t vrf_id
)
1500 zclient_create_header(s
, command
, vrf_id
);
1501 stream_putc(s
, afi
);
1502 stream_putc(s
, type
);
1503 stream_putw(s
, instance
);
1505 stream_putw_at(s
, 0, stream_get_endp(s
));
1507 return zclient_send_message(zclient
);
1510 /* Get prefix in ZServ format; family should be filled in on prefix */
1511 static void zclient_stream_get_prefix(struct stream
*s
, struct prefix
*p
)
1513 size_t plen
= prefix_blen(p
);
1520 stream_get(&p
->u
.prefix
, s
, plen
);
1522 p
->prefixlen
= MIN(plen
* 8, c
);
1528 /* Router-id update from zebra daemon. */
1529 void zebra_router_id_update_read(struct stream
*s
, struct prefix
*rid
)
1531 /* Fetch interface address. */
1532 STREAM_GETC(s
, rid
->family
);
1534 zclient_stream_get_prefix(s
, rid
);
1540 /* Interface addition from zebra daemon. */
1542 * The format of the message sent with type ZEBRA_INTERFACE_ADD or
1543 * ZEBRA_INTERFACE_DELETE from zebra to the client is:
1545 * 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
1546 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1552 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1554 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1556 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1559 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1561 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1563 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1565 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1567 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1569 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1570 * | Link Layer Type |
1571 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1572 * | Harware Address Length |
1573 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1574 * | Hardware Address if HW lenght different from 0 |
1575 * | ... max INTERFACE_HWADDR_MAX |
1576 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1577 * | Link_params? | Whether a link-params follows: 1 or 0.
1578 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1579 * | Link_params 0 or 1 INTERFACE_LINK_PARAMS_SIZE sized |
1580 * | .... (struct if_link_params). |
1581 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1584 static void zclient_vrf_add(struct zclient
*zclient
, vrf_id_t vrf_id
)
1587 char vrfname_tmp
[VRF_NAMSIZ
];
1588 struct vrf_data data
;
1590 stream_get(&data
, zclient
->ibuf
, sizeof(struct vrf_data
));
1591 /* Read interface name. */
1592 stream_get(vrfname_tmp
, zclient
->ibuf
, VRF_NAMSIZ
);
1594 /* Lookup/create vrf by vrf_id. */
1595 vrf
= vrf_get(vrf_id
, vrfname_tmp
);
1596 vrf
->data
.l
.table_id
= data
.l
.table_id
;
1597 memcpy(vrf
->data
.l
.netns_name
, data
.l
.netns_name
, NS_NAMSIZ
);
1601 static void zclient_vrf_delete(struct zclient
*zclient
, vrf_id_t vrf_id
)
1605 /* Lookup vrf by vrf_id. */
1606 vrf
= vrf_lookup_by_id(vrf_id
);
1609 * If a routing protocol doesn't know about a
1610 * vrf that is about to be deleted. There is
1611 * no point in attempting to delete it.
1619 struct interface
*zebra_interface_add_read(struct stream
*s
, vrf_id_t vrf_id
)
1621 struct interface
*ifp
;
1622 char ifname_tmp
[INTERFACE_NAMSIZ
];
1624 /* Read interface name. */
1625 stream_get(ifname_tmp
, s
, INTERFACE_NAMSIZ
);
1627 /* Lookup/create interface by name. */
1628 ifp
= if_get_by_name(ifname_tmp
, vrf_id
, 0);
1630 zebra_interface_if_set_value(s
, ifp
);
1636 * Read interface up/down msg (ZEBRA_INTERFACE_UP/ZEBRA_INTERFACE_DOWN)
1637 * from zebra server. The format of this message is the same as
1638 * that sent for ZEBRA_INTERFACE_ADD/ZEBRA_INTERFACE_DELETE (see
1639 * comments for zebra_interface_add_read), except that no sockaddr_dl
1640 * is sent at the tail of the message.
1642 struct interface
*zebra_interface_state_read(struct stream
*s
, vrf_id_t vrf_id
)
1644 struct interface
*ifp
;
1645 char ifname_tmp
[INTERFACE_NAMSIZ
];
1647 /* Read interface name. */
1648 stream_get(ifname_tmp
, s
, INTERFACE_NAMSIZ
);
1650 /* Lookup this by interface index. */
1651 ifp
= if_lookup_by_name(ifname_tmp
, vrf_id
);
1653 zlog_warn("INTERFACE_STATE: Cannot find IF %s in VRF %d",
1654 ifname_tmp
, vrf_id
);
1658 zebra_interface_if_set_value(s
, ifp
);
1663 static void link_params_set_value(struct stream
*s
, struct if_link_params
*iflp
)
1669 iflp
->lp_status
= stream_getl(s
);
1670 iflp
->te_metric
= stream_getl(s
);
1671 iflp
->max_bw
= stream_getf(s
);
1672 iflp
->max_rsv_bw
= stream_getf(s
);
1673 uint32_t bwclassnum
= stream_getl(s
);
1676 for (i
= 0; i
< bwclassnum
&& i
< MAX_CLASS_TYPE
; i
++)
1677 iflp
->unrsv_bw
[i
] = stream_getf(s
);
1680 "%s: received %d > %d (MAX_CLASS_TYPE) bw entries"
1681 " - outdated library?",
1682 __func__
, bwclassnum
, MAX_CLASS_TYPE
);
1684 iflp
->admin_grp
= stream_getl(s
);
1685 iflp
->rmt_as
= stream_getl(s
);
1686 iflp
->rmt_ip
.s_addr
= stream_get_ipv4(s
);
1688 iflp
->av_delay
= stream_getl(s
);
1689 iflp
->min_delay
= stream_getl(s
);
1690 iflp
->max_delay
= stream_getl(s
);
1691 iflp
->delay_var
= stream_getl(s
);
1693 iflp
->pkt_loss
= stream_getf(s
);
1694 iflp
->res_bw
= stream_getf(s
);
1695 iflp
->ava_bw
= stream_getf(s
);
1696 iflp
->use_bw
= stream_getf(s
);
1699 struct interface
*zebra_interface_link_params_read(struct stream
*s
)
1701 struct if_link_params
*iflp
;
1706 ifindex
= stream_getl(s
);
1708 struct interface
*ifp
= if_lookup_by_index(ifindex
, VRF_DEFAULT
);
1711 zlog_err("%s: unknown ifindex %u, shouldn't happen", __func__
,
1716 if ((iflp
= if_link_params_get(ifp
)) == NULL
)
1719 link_params_set_value(s
, iflp
);
1724 void zebra_interface_if_set_value(struct stream
*s
, struct interface
*ifp
)
1726 uint8_t link_params_status
= 0;
1727 ifindex_t old_ifindex
;
1729 old_ifindex
= ifp
->ifindex
;
1730 /* Read interface's index. */
1731 if_set_index(ifp
, stream_getl(s
));
1732 ifp
->status
= stream_getc(s
);
1734 /* Read interface's value. */
1735 ifp
->flags
= stream_getq(s
);
1736 ifp
->ptm_enable
= stream_getc(s
);
1737 ifp
->ptm_status
= stream_getc(s
);
1738 ifp
->metric
= stream_getl(s
);
1739 ifp
->speed
= stream_getl(s
);
1740 ifp
->mtu
= stream_getl(s
);
1741 ifp
->mtu6
= stream_getl(s
);
1742 ifp
->bandwidth
= stream_getl(s
);
1743 ifp
->ll_type
= stream_getl(s
);
1744 ifp
->hw_addr_len
= stream_getl(s
);
1745 if (ifp
->hw_addr_len
)
1746 stream_get(ifp
->hw_addr
, s
,
1747 MIN(ifp
->hw_addr_len
, INTERFACE_HWADDR_MAX
));
1749 /* Read Traffic Engineering status */
1750 link_params_status
= stream_getc(s
);
1751 /* Then, Traffic Engineering parameters if any */
1752 if (link_params_status
) {
1753 struct if_link_params
*iflp
= if_link_params_get(ifp
);
1754 link_params_set_value(s
, iflp
);
1757 nexthop_group_interface_state_change(ifp
, old_ifindex
);
1760 size_t zebra_interface_link_params_write(struct stream
*s
,
1761 struct interface
*ifp
)
1764 struct if_link_params
*iflp
;
1767 if (s
== NULL
|| ifp
== NULL
|| ifp
->link_params
== NULL
)
1770 iflp
= ifp
->link_params
;
1773 w
+= stream_putl(s
, iflp
->lp_status
);
1775 w
+= stream_putl(s
, iflp
->te_metric
);
1776 w
+= stream_putf(s
, iflp
->max_bw
);
1777 w
+= stream_putf(s
, iflp
->max_rsv_bw
);
1779 w
+= stream_putl(s
, MAX_CLASS_TYPE
);
1780 for (i
= 0; i
< MAX_CLASS_TYPE
; i
++)
1781 w
+= stream_putf(s
, iflp
->unrsv_bw
[i
]);
1783 w
+= stream_putl(s
, iflp
->admin_grp
);
1784 w
+= stream_putl(s
, iflp
->rmt_as
);
1785 w
+= stream_put_in_addr(s
, &iflp
->rmt_ip
);
1787 w
+= stream_putl(s
, iflp
->av_delay
);
1788 w
+= stream_putl(s
, iflp
->min_delay
);
1789 w
+= stream_putl(s
, iflp
->max_delay
);
1790 w
+= stream_putl(s
, iflp
->delay_var
);
1792 w
+= stream_putf(s
, iflp
->pkt_loss
);
1793 w
+= stream_putf(s
, iflp
->res_bw
);
1794 w
+= stream_putf(s
, iflp
->ava_bw
);
1795 w
+= stream_putf(s
, iflp
->use_bw
);
1801 * format of message for address additon is:
1805 * | type | ZEBRA_INTERFACE_ADDRESS_ADD or
1806 * +-+-+-+-+-+-+-+-+ ZEBRA_INTERFACE_ADDRES_DELETE
1815 * | ifc_flags | flags for connected address
1823 * | addr_len | len of addr. E.g., addr_len = 4 for ipv4 addrs.
1831 static int memconstant(const void *s
, int c
, size_t n
)
1833 const uint8_t *p
= s
;
1842 struct connected
*zebra_interface_address_read(int type
, struct stream
*s
,
1846 struct interface
*ifp
;
1847 struct connected
*ifc
;
1848 struct prefix p
, d
, *dp
;
1852 memset(&p
, 0, sizeof(p
));
1853 memset(&d
, 0, sizeof(d
));
1855 /* Get interface index. */
1856 ifindex
= stream_getl(s
);
1859 ifp
= if_lookup_by_index(ifindex
, vrf_id
);
1861 zlog_warn("INTERFACE_ADDRESS_%s: Cannot find IF %u in VRF %d",
1862 (type
== ZEBRA_INTERFACE_ADDRESS_ADD
) ? "ADD" : "DEL",
1868 ifc_flags
= stream_getc(s
);
1870 /* Fetch interface address. */
1871 d
.family
= p
.family
= stream_getc(s
);
1872 plen
= prefix_blen(&d
);
1874 zclient_stream_get_prefix(s
, &p
);
1876 /* Fetch destination address. */
1877 stream_get(&d
.u
.prefix
, s
, plen
);
1879 /* N.B. NULL destination pointers are encoded as all zeroes */
1880 dp
= memconstant(&d
.u
.prefix
, 0, plen
) ? NULL
: &d
;
1882 if (type
== ZEBRA_INTERFACE_ADDRESS_ADD
) {
1883 ifc
= connected_lookup_prefix_exact(ifp
, &p
);
1885 /* N.B. NULL destination pointers are encoded as all
1887 ifc
= connected_add_by_prefix(ifp
, &p
, dp
);
1890 ifc
->flags
= ifc_flags
;
1891 if (ifc
->destination
)
1892 ifc
->destination
->prefixlen
=
1893 ifc
->address
->prefixlen
;
1894 else if (CHECK_FLAG(ifc
->flags
, ZEBRA_IFA_PEER
)) {
1895 /* carp interfaces on OpenBSD with 0.0.0.0/0 as
1897 char buf
[PREFIX_STRLEN
];
1899 "warning: interface %s address %s "
1900 "with peer flag set, but no peer address!",
1901 ifp
->name
, prefix2str(ifc
->address
, buf
,
1903 UNSET_FLAG(ifc
->flags
, ZEBRA_IFA_PEER
);
1907 assert(type
== ZEBRA_INTERFACE_ADDRESS_DELETE
);
1908 ifc
= connected_delete_by_prefix(ifp
, &p
);
1915 * format of message for neighbor connected address is:
1919 * | type | ZEBRA_INTERFACE_NBR_ADDRESS_ADD or
1920 * +-+-+-+-+-+-+-+-+ ZEBRA_INTERFACE_NBR_ADDRES_DELETE
1935 * | addr_len | len of addr.
1938 struct nbr_connected
*
1939 zebra_interface_nbr_address_read(int type
, struct stream
*s
, vrf_id_t vrf_id
)
1941 unsigned int ifindex
;
1942 struct interface
*ifp
;
1944 struct nbr_connected
*ifc
;
1946 /* Get interface index. */
1947 ifindex
= stream_getl(s
);
1950 ifp
= if_lookup_by_index(ifindex
, vrf_id
);
1952 zlog_warn("INTERFACE_NBR_%s: Cannot find IF %u in VRF %d",
1953 (type
== ZEBRA_INTERFACE_NBR_ADDRESS_ADD
) ? "ADD"
1959 p
.family
= stream_getc(s
);
1960 stream_get(&p
.u
.prefix
, s
, prefix_blen(&p
));
1961 p
.prefixlen
= stream_getc(s
);
1963 if (type
== ZEBRA_INTERFACE_NBR_ADDRESS_ADD
) {
1964 /* Currently only supporting P2P links, so any new RA source
1966 considered as the replacement of the previously learnt
1967 Link-Local address. */
1968 if (!(ifc
= listnode_head(ifp
->nbr_connected
))) {
1969 ifc
= nbr_connected_new();
1970 ifc
->address
= prefix_new();
1972 listnode_add(ifp
->nbr_connected
, ifc
);
1975 prefix_copy(ifc
->address
, &p
);
1977 assert(type
== ZEBRA_INTERFACE_NBR_ADDRESS_DELETE
);
1979 ifc
= nbr_connected_check(ifp
, &p
);
1981 listnode_delete(ifp
->nbr_connected
, ifc
);
1987 struct interface
*zebra_interface_vrf_update_read(struct stream
*s
,
1989 vrf_id_t
*new_vrf_id
)
1991 unsigned int ifindex
;
1992 struct interface
*ifp
;
1995 /* Get interface index. */
1996 ifindex
= stream_getl(s
);
1998 /* Lookup interface. */
1999 ifp
= if_lookup_by_index(ifindex
, vrf_id
);
2001 zlog_warn("INTERFACE_VRF_UPDATE: Cannot find IF %u in VRF %d",
2006 /* Fetch new VRF Id. */
2007 new_id
= stream_getw(s
);
2009 *new_vrf_id
= new_id
;
2013 /* filter unwanted messages until the expected one arrives */
2014 static int zclient_read_sync_response(struct zclient
*zclient
,
2015 uint16_t expected_cmd
)
2027 cmd
= expected_cmd
+ 1;
2028 while (ret
== 0 && cmd
!= expected_cmd
) {
2032 /* wait until response arrives */
2034 FD_SET(zclient
->sock
, &readfds
);
2035 select(zclient
->sock
+ 1, &readfds
, NULL
, NULL
, NULL
);
2036 if (!FD_ISSET(zclient
->sock
, &readfds
))
2039 ret
= zclient_read_header(s
, zclient
->sock
, &size
, &marker
,
2040 &version
, &vrf_id
, &cmd
);
2042 zlog_debug("%s: Response (%d bytes) received", __func__
,
2046 zlog_err("%s: Invalid Sync Message Reply", __func__
);
2053 * Connect to label manager in a syncronous way
2055 * It first writes the request to zcient output buffer and then
2056 * immediately reads the answer from the input buffer.
2058 * @param zclient Zclient used to connect to label manager (zebra)
2059 * @result Result of response
2061 int lm_label_manager_connect(struct zclient
*zclient
)
2068 zlog_debug("Connecting to Label Manager");
2070 if (zclient
->sock
< 0)
2076 zclient_create_header(s
, ZEBRA_LABEL_MANAGER_CONNECT
, VRF_DEFAULT
);
2079 stream_putc(s
, zclient
->redist_default
);
2081 stream_putw(s
, zclient
->instance
);
2083 /* Put length at the first point of the stream. */
2084 stream_putw_at(s
, 0, stream_get_endp(s
));
2086 ret
= writen(zclient
->sock
, s
->data
, stream_get_endp(s
));
2088 zlog_err("%s: can't write to zclient->sock", __func__
);
2089 close(zclient
->sock
);
2094 zlog_err("%s: zclient->sock connection closed", __func__
);
2095 close(zclient
->sock
);
2100 zlog_debug("%s: Label manager connect request (%d bytes) sent",
2104 if (zclient_read_sync_response(zclient
, ZEBRA_LABEL_MANAGER_CONNECT
)
2110 result
= stream_getc(s
);
2113 "%s: Label Manager connect response received, result %u",
2120 * Asynchronous label chunk request
2122 * @param zclient Zclient used to connect to label manager (zebra)
2123 * @param keep Avoid garbage collection
2124 * @param chunk_size Amount of labels requested
2125 * @result 0 on success, -1 otherwise
2127 int zclient_send_get_label_chunk(
2128 struct zclient
*zclient
,
2130 uint32_t chunk_size
)
2135 zlog_debug("Getting Label Chunk");
2137 if (zclient
->sock
< 0)
2143 zclient_create_header(s
, ZEBRA_GET_LABEL_CHUNK
, VRF_DEFAULT
);
2144 stream_putc(s
, keep
);
2145 stream_putl(s
, chunk_size
);
2147 /* Put length at the first point of the stream. */
2148 stream_putw_at(s
, 0, stream_get_endp(s
));
2150 return zclient_send_message(zclient
);
2154 * Function to request a label chunk in a syncronous way
2156 * It first writes the request to zlcient output buffer and then
2157 * immediately reads the answer from the input buffer.
2159 * @param zclient Zclient used to connect to label manager (zebra)
2160 * @param keep Avoid garbage collection
2161 * @param chunk_size Amount of labels requested
2162 * @param start To write first assigned chunk label to
2163 * @param end To write last assigned chunk label to
2164 * @result 0 on success, -1 otherwise
2166 int lm_get_label_chunk(struct zclient
*zclient
, uint8_t keep
,
2167 uint32_t chunk_size
, uint32_t *start
, uint32_t *end
)
2171 uint8_t response_keep
;
2174 zlog_debug("Getting Label Chunk");
2176 if (zclient
->sock
< 0)
2182 zclient_create_header(s
, ZEBRA_GET_LABEL_CHUNK
, VRF_DEFAULT
);
2184 stream_putc(s
, keep
);
2186 stream_putl(s
, chunk_size
);
2187 /* Put length at the first point of the stream. */
2188 stream_putw_at(s
, 0, stream_get_endp(s
));
2190 ret
= writen(zclient
->sock
, s
->data
, stream_get_endp(s
));
2192 zlog_err("%s: can't write to zclient->sock", __func__
);
2193 close(zclient
->sock
);
2198 zlog_err("%s: zclient->sock connection closed", __func__
);
2199 close(zclient
->sock
);
2204 zlog_debug("%s: Label chunk request (%d bytes) sent", __func__
,
2208 if (zclient_read_sync_response(zclient
, ZEBRA_GET_LABEL_CHUNK
) != 0)
2213 response_keep
= stream_getc(s
);
2214 /* start and end labels */
2215 *start
= stream_getl(s
);
2216 *end
= stream_getl(s
);
2218 /* not owning this response */
2219 if (keep
!= response_keep
) {
2221 "%s: Invalid Label chunk: %u - %u, keeps mismatch %u != %u",
2222 __func__
, *start
, *end
, keep
, response_keep
);
2225 if (*start
> *end
|| *start
< MPLS_LABEL_UNRESERVED_MIN
2226 || *end
> MPLS_LABEL_UNRESERVED_MAX
) {
2227 zlog_err("%s: Invalid Label chunk: %u - %u", __func__
, *start
,
2233 zlog_debug("Label Chunk assign: %u - %u (%u) ", *start
, *end
,
2240 * Function to release a label chunk
2242 * @param zclient Zclient used to connect to label manager (zebra)
2243 * @param start First label of chunk
2244 * @param end Last label of chunk
2245 * @result 0 on success, -1 otherwise
2247 int lm_release_label_chunk(struct zclient
*zclient
, uint32_t start
,
2254 zlog_debug("Releasing Label Chunk");
2256 if (zclient
->sock
< 0)
2262 zclient_create_header(s
, ZEBRA_RELEASE_LABEL_CHUNK
, VRF_DEFAULT
);
2265 stream_putl(s
, start
);
2267 stream_putl(s
, end
);
2269 /* Put length at the first point of the stream. */
2270 stream_putw_at(s
, 0, stream_get_endp(s
));
2272 ret
= writen(zclient
->sock
, s
->data
, stream_get_endp(s
));
2274 zlog_err("%s: can't write to zclient->sock", __func__
);
2275 close(zclient
->sock
);
2280 zlog_err("%s: zclient->sock connection closed", __func__
);
2281 close(zclient
->sock
);
2290 * Connect to table manager in a syncronous way
2292 * It first writes the request to zcient output buffer and then
2293 * immediately reads the answer from the input buffer.
2295 * @param zclient Zclient used to connect to table manager (zebra)
2296 * @result Result of response
2298 int tm_table_manager_connect(struct zclient
*zclient
)
2305 zlog_debug("Connecting to Table Manager");
2307 if (zclient
->sock
< 0)
2313 zclient_create_header(s
, ZEBRA_TABLE_MANAGER_CONNECT
, VRF_DEFAULT
);
2316 stream_putc(s
, zclient
->redist_default
);
2318 stream_putw(s
, zclient
->instance
);
2320 /* Put length at the first point of the stream. */
2321 stream_putw_at(s
, 0, stream_get_endp(s
));
2323 ret
= zclient_send_message(zclient
);
2328 zlog_debug("%s: Table manager connect request sent",
2332 if (zclient_read_sync_response(zclient
, ZEBRA_TABLE_MANAGER_CONNECT
)
2338 STREAM_GETC(s
, result
);
2341 "%s: Table Manager connect response received, result %u",
2350 * Function to request a table chunk in a syncronous way
2352 * It first writes the request to zclient output buffer and then
2353 * immediately reads the answer from the input buffer.
2355 * @param zclient Zclient used to connect to table manager (zebra)
2356 * @param chunk_size Amount of table requested
2357 * @param start to write first assigned chunk table RT ID to
2358 * @param end To write last assigned chunk table RT ID to
2359 * @result 0 on success, -1 otherwise
2361 int tm_get_table_chunk(struct zclient
*zclient
, uint32_t chunk_size
,
2362 uint32_t *start
, uint32_t *end
)
2368 zlog_debug("Getting Table Chunk");
2370 if (zclient
->sock
< 0)
2376 zclient_create_header(s
, ZEBRA_GET_TABLE_CHUNK
, VRF_DEFAULT
);
2378 stream_putl(s
, chunk_size
);
2379 /* Put length at the first point of the stream. */
2380 stream_putw_at(s
, 0, stream_get_endp(s
));
2382 ret
= writen(zclient
->sock
, s
->data
, stream_get_endp(s
));
2384 zlog_err("%s: can't write to zclient->sock", __func__
);
2385 close(zclient
->sock
);
2390 zlog_err("%s: zclient->sock connection closed", __func__
);
2391 close(zclient
->sock
);
2396 zlog_debug("%s: Table chunk request (%d bytes) sent", __func__
,
2400 if (zclient_read_sync_response(zclient
, ZEBRA_GET_TABLE_CHUNK
) != 0)
2404 /* start and end table IDs */
2405 STREAM_GETL(s
, *start
);
2406 STREAM_GETL(s
, *end
);
2409 zlog_debug("Table Chunk assign: %u - %u ", *start
, *end
);
2416 * Function to release a table chunk
2418 * @param zclient Zclient used to connect to table manager (zebra)
2419 * @param start First label of table
2420 * @param end Last label of chunk
2421 * @result 0 on success, -1 otherwise
2423 int tm_release_table_chunk(struct zclient
*zclient
, uint32_t start
,
2429 zlog_debug("Releasing Table Chunk");
2431 if (zclient
->sock
< 0)
2437 zclient_create_header(s
, ZEBRA_RELEASE_TABLE_CHUNK
, VRF_DEFAULT
);
2440 stream_putl(s
, start
);
2442 stream_putl(s
, end
);
2444 /* Put length at the first point of the stream. */
2445 stream_putw_at(s
, 0, stream_get_endp(s
));
2447 return zclient_send_message(zclient
);
2451 int zebra_send_pw(struct zclient
*zclient
, int command
, struct zapi_pw
*pw
)
2459 zclient_create_header(s
, command
, VRF_DEFAULT
);
2460 stream_write(s
, pw
->ifname
, IF_NAMESIZE
);
2461 stream_putl(s
, pw
->ifindex
);
2464 stream_putl(s
, pw
->type
);
2467 stream_putl(s
, pw
->af
);
2470 stream_put_in_addr(s
, &pw
->nexthop
.ipv4
);
2473 stream_write(s
, (uint8_t *)&pw
->nexthop
.ipv6
, 16);
2476 zlog_err("%s: unknown af", __func__
);
2481 stream_putl(s
, pw
->local_label
);
2482 stream_putl(s
, pw
->remote_label
);
2485 stream_putc(s
, pw
->flags
);
2487 /* Protocol specific fields */
2488 stream_write(s
, &pw
->data
, sizeof(union pw_protocol_fields
));
2490 /* Put length at the first point of the stream. */
2491 stream_putw_at(s
, 0, stream_get_endp(s
));
2493 return zclient_send_message(zclient
);
2497 * Receive PW status update from Zebra and send it to LDE process.
2499 void zebra_read_pw_status_update(int command
, struct zclient
*zclient
,
2500 zebra_size_t length
, vrf_id_t vrf_id
,
2501 struct zapi_pw_status
*pw
)
2505 memset(pw
, 0, sizeof(struct zapi_pw_status
));
2509 stream_get(pw
->ifname
, s
, IF_NAMESIZE
);
2510 pw
->ifindex
= stream_getl(s
);
2511 pw
->status
= stream_getl(s
);
2514 static void zclient_capability_decode(int command
, struct zclient
*zclient
,
2515 zebra_size_t length
, vrf_id_t vrf_id
)
2517 struct zclient_capabilities cap
;
2518 struct stream
*s
= zclient
->ibuf
;
2519 uint8_t mpls_enabled
;
2521 memset(&cap
, 0, sizeof(cap
));
2522 STREAM_GETC(s
, mpls_enabled
);
2523 cap
.mpls_enabled
= !!mpls_enabled
;
2524 STREAM_GETL(s
, cap
.ecmp
);
2526 if (zclient
->zebra_capabilities
)
2527 (*zclient
->zebra_capabilities
)(&cap
);
2533 /* Zebra client message read function. */
2534 static int zclient_read(struct thread
*thread
)
2537 uint16_t length
, command
;
2538 uint8_t marker
, version
;
2540 struct zclient
*zclient
;
2542 /* Get socket to zebra. */
2543 zclient
= THREAD_ARG(thread
);
2544 zclient
->t_read
= NULL
;
2546 /* Read zebra header (if we don't have it already). */
2547 if ((already
= stream_get_endp(zclient
->ibuf
)) < ZEBRA_HEADER_SIZE
) {
2549 if (((nbyte
= stream_read_try(zclient
->ibuf
, zclient
->sock
,
2550 ZEBRA_HEADER_SIZE
- already
))
2555 "zclient connection closed socket [%d].",
2557 return zclient_failed(zclient
);
2559 if (nbyte
!= (ssize_t
)(ZEBRA_HEADER_SIZE
- already
)) {
2560 /* Try again later. */
2561 zclient_event(ZCLIENT_READ
, zclient
);
2564 already
= ZEBRA_HEADER_SIZE
;
2567 /* Reset to read from the beginning of the incoming packet. */
2568 stream_set_getp(zclient
->ibuf
, 0);
2570 /* Fetch header values. */
2571 length
= stream_getw(zclient
->ibuf
);
2572 marker
= stream_getc(zclient
->ibuf
);
2573 version
= stream_getc(zclient
->ibuf
);
2574 vrf_id
= stream_getl(zclient
->ibuf
);
2575 command
= stream_getw(zclient
->ibuf
);
2577 if (marker
!= ZEBRA_HEADER_MARKER
|| version
!= ZSERV_VERSION
) {
2579 "%s: socket %d version mismatch, marker %d, version %d",
2580 __func__
, zclient
->sock
, marker
, version
);
2581 return zclient_failed(zclient
);
2584 if (length
< ZEBRA_HEADER_SIZE
) {
2585 zlog_err("%s: socket %d message length %u is less than %d ",
2586 __func__
, zclient
->sock
, length
, ZEBRA_HEADER_SIZE
);
2587 return zclient_failed(zclient
);
2591 if (length
> STREAM_SIZE(zclient
->ibuf
)) {
2594 "%s: message size %u exceeds buffer size %lu, expanding...",
2596 (unsigned long)STREAM_SIZE(zclient
->ibuf
));
2597 ns
= stream_new(length
);
2598 stream_copy(ns
, zclient
->ibuf
);
2599 stream_free(zclient
->ibuf
);
2603 /* Read rest of zebra packet. */
2604 if (already
< length
) {
2606 if (((nbyte
= stream_read_try(zclient
->ibuf
, zclient
->sock
,
2612 "zclient connection closed socket [%d].",
2614 return zclient_failed(zclient
);
2616 if (nbyte
!= (ssize_t
)(length
- already
)) {
2617 /* Try again later. */
2618 zclient_event(ZCLIENT_READ
, zclient
);
2623 length
-= ZEBRA_HEADER_SIZE
;
2626 zlog_debug("zclient 0x%p command 0x%x VRF %u\n",
2627 (void *)zclient
, command
, vrf_id
);
2630 case ZEBRA_CAPABILITIES
:
2631 zclient_capability_decode(command
, zclient
, length
, vrf_id
);
2633 case ZEBRA_ROUTER_ID_UPDATE
:
2634 if (zclient
->router_id_update
)
2635 (*zclient
->router_id_update
)(command
, zclient
, length
,
2639 zclient_vrf_add(zclient
, vrf_id
);
2641 case ZEBRA_VRF_DELETE
:
2642 zclient_vrf_delete(zclient
, vrf_id
);
2644 case ZEBRA_INTERFACE_ADD
:
2645 if (zclient
->interface_add
)
2646 (*zclient
->interface_add
)(command
, zclient
, length
,
2649 case ZEBRA_INTERFACE_DELETE
:
2650 if (zclient
->interface_delete
)
2651 (*zclient
->interface_delete
)(command
, zclient
, length
,
2654 case ZEBRA_INTERFACE_ADDRESS_ADD
:
2655 if (zclient
->interface_address_add
)
2656 (*zclient
->interface_address_add
)(command
, zclient
,
2659 case ZEBRA_INTERFACE_ADDRESS_DELETE
:
2660 if (zclient
->interface_address_delete
)
2661 (*zclient
->interface_address_delete
)(command
, zclient
,
2664 case ZEBRA_INTERFACE_BFD_DEST_UPDATE
:
2665 if (zclient
->interface_bfd_dest_update
)
2666 (*zclient
->interface_bfd_dest_update
)(command
, zclient
,
2669 case ZEBRA_INTERFACE_NBR_ADDRESS_ADD
:
2670 if (zclient
->interface_nbr_address_add
)
2671 (*zclient
->interface_nbr_address_add
)(command
, zclient
,
2674 case ZEBRA_INTERFACE_NBR_ADDRESS_DELETE
:
2675 if (zclient
->interface_nbr_address_delete
)
2676 (*zclient
->interface_nbr_address_delete
)(
2677 command
, zclient
, length
, vrf_id
);
2679 case ZEBRA_INTERFACE_UP
:
2680 if (zclient
->interface_up
)
2681 (*zclient
->interface_up
)(command
, zclient
, length
,
2684 case ZEBRA_INTERFACE_DOWN
:
2685 if (zclient
->interface_down
)
2686 (*zclient
->interface_down
)(command
, zclient
, length
,
2689 case ZEBRA_INTERFACE_VRF_UPDATE
:
2690 if (zclient
->interface_vrf_update
)
2691 (*zclient
->interface_vrf_update
)(command
, zclient
,
2694 case ZEBRA_NEXTHOP_UPDATE
:
2696 zlog_debug("zclient rcvd nexthop update\n");
2697 if (zclient
->nexthop_update
)
2698 (*zclient
->nexthop_update
)(command
, zclient
, length
,
2701 case ZEBRA_IMPORT_CHECK_UPDATE
:
2703 zlog_debug("zclient rcvd import check update\n");
2704 if (zclient
->import_check_update
)
2705 (*zclient
->import_check_update
)(command
, zclient
,
2708 case ZEBRA_BFD_DEST_REPLAY
:
2709 if (zclient
->bfd_dest_replay
)
2710 (*zclient
->bfd_dest_replay
)(command
, zclient
, length
,
2713 case ZEBRA_REDISTRIBUTE_ROUTE_ADD
:
2714 if (zclient
->redistribute_route_add
)
2715 (*zclient
->redistribute_route_add
)(command
, zclient
,
2718 case ZEBRA_REDISTRIBUTE_ROUTE_DEL
:
2719 if (zclient
->redistribute_route_del
)
2720 (*zclient
->redistribute_route_del
)(command
, zclient
,
2723 case ZEBRA_INTERFACE_LINK_PARAMS
:
2724 if (zclient
->interface_link_params
)
2725 (*zclient
->interface_link_params
)(command
, zclient
,
2728 case ZEBRA_FEC_UPDATE
:
2730 zlog_debug("zclient rcvd fec update\n");
2731 if (zclient
->fec_update
)
2732 (*zclient
->fec_update
)(command
, zclient
, length
);
2735 if (zclient
->local_vni_add
)
2736 (*zclient
->local_vni_add
)(command
, zclient
, length
,
2740 if (zclient
->local_vni_del
)
2741 (*zclient
->local_vni_del
)(command
, zclient
, length
,
2744 case ZEBRA_L3VNI_ADD
:
2745 if (zclient
->local_l3vni_add
)
2746 (*zclient
->local_l3vni_add
)(command
, zclient
, length
,
2749 case ZEBRA_L3VNI_DEL
:
2750 if (zclient
->local_l3vni_del
)
2751 (*zclient
->local_l3vni_del
)(command
, zclient
, length
,
2754 case ZEBRA_MACIP_ADD
:
2755 if (zclient
->local_macip_add
)
2756 (*zclient
->local_macip_add
)(command
, zclient
, length
,
2759 case ZEBRA_MACIP_DEL
:
2760 if (zclient
->local_macip_del
)
2761 (*zclient
->local_macip_del
)(command
, zclient
, length
,
2764 case ZEBRA_IP_PREFIX_ROUTE_ADD
:
2765 if (zclient
->local_ip_prefix_add
)
2766 (*zclient
->local_ip_prefix_add
)(command
, zclient
,
2769 case ZEBRA_IP_PREFIX_ROUTE_DEL
:
2770 if (zclient
->local_ip_prefix_del
)
2771 (*zclient
->local_ip_prefix_del
)(command
, zclient
,
2774 case ZEBRA_PW_STATUS_UPDATE
:
2775 if (zclient
->pw_status_update
)
2776 (*zclient
->pw_status_update
)(command
, zclient
, length
,
2779 case ZEBRA_ROUTE_NOTIFY_OWNER
:
2780 if (zclient
->route_notify_owner
)
2781 (*zclient
->route_notify_owner
)(command
, zclient
, length
,
2784 case ZEBRA_RULE_NOTIFY_OWNER
:
2785 if (zclient
->rule_notify_owner
)
2786 (*zclient
->rule_notify_owner
)(command
, zclient
, length
,
2789 case ZEBRA_GET_LABEL_CHUNK
:
2790 if (zclient
->label_chunk
)
2791 (*zclient
->label_chunk
)(command
, zclient
, length
,
2794 case ZEBRA_IPSET_NOTIFY_OWNER
:
2795 if (zclient
->ipset_notify_owner
)
2796 (*zclient
->ipset_notify_owner
)(command
, zclient
, length
,
2799 case ZEBRA_IPSET_ENTRY_NOTIFY_OWNER
:
2800 if (zclient
->ipset_entry_notify_owner
)
2801 (*zclient
->ipset_entry_notify_owner
)(command
,
2805 case ZEBRA_IPTABLE_NOTIFY_OWNER
:
2806 if (zclient
->iptable_notify_owner
)
2807 (*zclient
->iptable_notify_owner
)(command
,
2814 if (zclient
->sock
< 0)
2815 /* Connection was closed during packet processing. */
2818 /* Register read thread. */
2819 stream_reset(zclient
->ibuf
);
2820 zclient_event(ZCLIENT_READ
, zclient
);
2825 void zclient_redistribute(int command
, struct zclient
*zclient
, afi_t afi
,
2826 int type
, unsigned short instance
, vrf_id_t vrf_id
)
2830 if (command
== ZEBRA_REDISTRIBUTE_ADD
) {
2831 if (redist_check_instance(
2832 &zclient
->mi_redist
[afi
][type
], instance
))
2834 redist_add_instance(&zclient
->mi_redist
[afi
][type
],
2837 if (!redist_check_instance(
2838 &zclient
->mi_redist
[afi
][type
], instance
))
2840 redist_del_instance(&zclient
->mi_redist
[afi
][type
],
2845 if (command
== ZEBRA_REDISTRIBUTE_ADD
) {
2846 if (vrf_bitmap_check(zclient
->redist
[afi
][type
],
2849 vrf_bitmap_set(zclient
->redist
[afi
][type
], vrf_id
);
2851 if (!vrf_bitmap_check(zclient
->redist
[afi
][type
],
2854 vrf_bitmap_unset(zclient
->redist
[afi
][type
], vrf_id
);
2858 if (zclient
->sock
> 0)
2859 zebra_redistribute_send(command
, zclient
, afi
, type
, instance
,
2864 void zclient_redistribute_default(int command
, struct zclient
*zclient
,
2868 if (command
== ZEBRA_REDISTRIBUTE_DEFAULT_ADD
) {
2869 if (vrf_bitmap_check(zclient
->default_information
, vrf_id
))
2871 vrf_bitmap_set(zclient
->default_information
, vrf_id
);
2873 if (!vrf_bitmap_check(zclient
->default_information
, vrf_id
))
2875 vrf_bitmap_unset(zclient
->default_information
, vrf_id
);
2878 if (zclient
->sock
> 0)
2879 zebra_message_send(zclient
, command
, vrf_id
);
2882 static void zclient_event(enum event event
, struct zclient
*zclient
)
2885 case ZCLIENT_SCHEDULE
:
2886 thread_add_event(zclient
->master
, zclient_connect
, zclient
, 0,
2887 &zclient
->t_connect
);
2889 case ZCLIENT_CONNECT
:
2892 "zclient connect failures: %d schedule interval is now %d",
2893 zclient
->fail
, zclient
->fail
< 3 ? 10 : 60);
2894 thread_add_timer(zclient
->master
, zclient_connect
, zclient
,
2895 zclient
->fail
< 3 ? 10 : 60,
2896 &zclient
->t_connect
);
2899 zclient
->t_read
= NULL
;
2900 thread_add_read(zclient
->master
, zclient_read
, zclient
,
2901 zclient
->sock
, &zclient
->t_read
);
2906 void zclient_interface_set_master(struct zclient
*client
,
2907 struct interface
*master
,
2908 struct interface
*slave
)
2915 zclient_create_header(s
, ZEBRA_INTERFACE_SET_MASTER
, master
->vrf_id
);
2917 stream_putl(s
, master
->vrf_id
);
2918 stream_putl(s
, master
->ifindex
);
2919 stream_putl(s
, slave
->vrf_id
);
2920 stream_putl(s
, slave
->ifindex
);
2922 stream_putw_at(s
, 0, stream_get_endp(s
));
2923 zclient_send_message(client
);