1 /* Zebra daemon server routine.
2 * Copyright (C) 1997, 98, 99 Kunihiro Ishiguro
4 * This file is part of GNU Zebra.
6 * GNU Zebra is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License as published by the
8 * Free Software Foundation; either version 2, or (at your option) any
11 * GNU Zebra is distributed in the hope that it will be useful, but
12 * WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * General Public License for more details.
16 * You should have received a copy of the GNU General Public License along
17 * with this program; see the file COPYING; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
29 #include "zebra_memory.h"
33 #include "sockunion.h"
42 #include "zebra/zserv.h"
43 #include "zebra/zebra_ns.h"
44 #include "zebra/zebra_vrf.h"
45 #include "zebra/router-id.h"
46 #include "zebra/redistribute.h"
47 #include "zebra/debug.h"
48 #include "zebra/ipforward.h"
49 #include "zebra/zebra_rnh.h"
50 #include "zebra/rt_netlink.h"
51 #include "zebra/interface.h"
52 #include "zebra/zebra_ptm.h"
53 #include "zebra/rtadv.h"
54 #include "zebra/zebra_mpls.h"
55 #include "zebra/zebra_mroute.h"
56 #include "zebra/label_manager.h"
57 #include "zebra/zebra_vxlan.h"
60 /* Event list of zebra. */
61 enum event
{ ZEBRA_SERV
, ZEBRA_READ
, ZEBRA_WRITE
};
63 static void zebra_event(enum event event
, int sock
, struct zserv
*client
);
65 extern struct zebra_privs_t zserv_privs
;
67 static void zebra_client_close(struct zserv
*client
);
69 static int zserv_delayed_close(struct thread
*thread
)
71 struct zserv
*client
= THREAD_ARG(thread
);
73 client
->t_suicide
= NULL
;
74 zebra_client_close(client
);
78 static int zserv_flush_data(struct thread
*thread
)
80 struct zserv
*client
= THREAD_ARG(thread
);
82 client
->t_write
= NULL
;
83 if (client
->t_suicide
) {
84 zebra_client_close(client
);
87 switch (buffer_flush_available(client
->wb
, client
->sock
)) {
90 "%s: buffer_flush_available failed on zserv client fd %d, "
92 __func__
, client
->sock
);
93 zebra_client_close(client
);
97 client
->t_write
= NULL
;
98 thread_add_write(zebrad
.master
, zserv_flush_data
, client
,
99 client
->sock
, &client
->t_write
);
106 client
->last_write_time
= monotime(NULL
);
110 int zebra_server_send_message(struct zserv
*client
)
112 if (client
->t_suicide
)
115 if (client
->is_synchronous
)
118 stream_set_getp(client
->obuf
, 0);
119 client
->last_write_cmd
= stream_getw_from(client
->obuf
, 6);
120 switch (buffer_write(client
->wb
, client
->sock
,
121 STREAM_DATA(client
->obuf
),
122 stream_get_endp(client
->obuf
))) {
125 "%s: buffer_write failed to zserv client fd %d, closing",
126 __func__
, client
->sock
);
127 /* Schedule a delayed close since many of the functions that
129 one do not check the return code. They do not allow for the
130 possibility that an I/O error may have caused the client to
133 client
->t_suicide
= NULL
;
134 thread_add_event(zebrad
.master
, zserv_delayed_close
, client
, 0,
138 THREAD_OFF(client
->t_write
);
141 thread_add_write(zebrad
.master
, zserv_flush_data
, client
,
142 client
->sock
, &client
->t_write
);
146 client
->last_write_time
= monotime(NULL
);
150 void zserv_create_header(struct stream
*s
, uint16_t cmd
, vrf_id_t vrf_id
)
152 /* length placeholder, caller can update */
153 stream_putw(s
, ZEBRA_HEADER_SIZE
);
154 stream_putc(s
, ZEBRA_HEADER_MARKER
);
155 stream_putc(s
, ZSERV_VERSION
);
156 stream_putw(s
, vrf_id
);
160 static void zserv_encode_interface(struct stream
*s
, struct interface
*ifp
)
162 /* Interface information. */
163 stream_put(s
, ifp
->name
, INTERFACE_NAMSIZ
);
164 stream_putl(s
, ifp
->ifindex
);
165 stream_putc(s
, ifp
->status
);
166 stream_putq(s
, ifp
->flags
);
167 stream_putc(s
, ifp
->ptm_enable
);
168 stream_putc(s
, ifp
->ptm_status
);
169 stream_putl(s
, ifp
->metric
);
170 stream_putl(s
, ifp
->speed
);
171 stream_putl(s
, ifp
->mtu
);
172 stream_putl(s
, ifp
->mtu6
);
173 stream_putl(s
, ifp
->bandwidth
);
174 stream_putl(s
, ifp
->ll_type
);
175 stream_putl(s
, ifp
->hw_addr_len
);
176 if (ifp
->hw_addr_len
)
177 stream_put(s
, ifp
->hw_addr
, ifp
->hw_addr_len
);
179 /* Then, Traffic Engineering parameters if any */
180 if (HAS_LINK_PARAMS(ifp
) && IS_LINK_PARAMS_SET(ifp
->link_params
)) {
182 zebra_interface_link_params_write(s
, ifp
);
186 /* Write packet size. */
187 stream_putw_at(s
, 0, stream_get_endp(s
));
190 static void zserv_encode_vrf(struct stream
*s
, struct zebra_vrf
*zvrf
)
192 struct vrf_data data
;
194 data
.l
.table_id
= zvrf
->table_id
;
195 /* Pass the tableid */
196 stream_put(s
, &data
, sizeof(struct vrf_data
));
197 /* Interface information. */
198 stream_put(s
, zvrf_name(zvrf
), VRF_NAMSIZ
);
200 /* Write packet size. */
201 stream_putw_at(s
, 0, stream_get_endp(s
));
204 /* Interface is added. Send ZEBRA_INTERFACE_ADD to client. */
206 * This function is called in the following situations:
207 * - in response to a 3-byte ZEBRA_INTERFACE_ADD request
209 * - at startup, when zebra figures out the available interfaces
210 * - when an interface is added (where support for
211 * RTM_IFANNOUNCE or AF_NETLINK sockets is available), or when
212 * an interface is marked IFF_UP (i.e., an RTM_IFINFO message is
215 int zsend_interface_add(struct zserv
*client
, struct interface
*ifp
)
222 zserv_create_header(s
, ZEBRA_INTERFACE_ADD
, ifp
->vrf_id
);
223 zserv_encode_interface(s
, ifp
);
226 return zebra_server_send_message(client
);
229 /* Interface deletion from zebra daemon. */
230 int zsend_interface_delete(struct zserv
*client
, struct interface
*ifp
)
237 zserv_create_header(s
, ZEBRA_INTERFACE_DELETE
, ifp
->vrf_id
);
238 zserv_encode_interface(s
, ifp
);
241 return zebra_server_send_message(client
);
244 int zsend_vrf_add(struct zserv
*client
, struct zebra_vrf
*zvrf
)
251 zserv_create_header(s
, ZEBRA_VRF_ADD
, zvrf_id(zvrf
));
252 zserv_encode_vrf(s
, zvrf
);
254 client
->vrfadd_cnt
++;
255 return zebra_server_send_message(client
);
258 /* VRF deletion from zebra daemon. */
259 int zsend_vrf_delete(struct zserv
*client
, struct zebra_vrf
*zvrf
)
266 zserv_create_header(s
, ZEBRA_VRF_DELETE
, zvrf_id(zvrf
));
267 zserv_encode_vrf(s
, zvrf
);
269 client
->vrfdel_cnt
++;
270 return zebra_server_send_message(client
);
273 int zsend_interface_link_params(struct zserv
*client
, struct interface
*ifp
)
277 /* Check this client need interface information. */
281 if (!ifp
->link_params
)
286 zserv_create_header(s
, ZEBRA_INTERFACE_LINK_PARAMS
, ifp
->vrf_id
);
288 /* Add Interface Index */
289 stream_putl(s
, ifp
->ifindex
);
291 /* Then TE Link Parameters */
292 if (zebra_interface_link_params_write(s
, ifp
) == 0)
295 /* Write packet size. */
296 stream_putw_at(s
, 0, stream_get_endp(s
));
298 return zebra_server_send_message(client
);
301 /* Interface address is added/deleted. Send ZEBRA_INTERFACE_ADDRESS_ADD or
302 * ZEBRA_INTERFACE_ADDRESS_DELETE to the client.
304 * A ZEBRA_INTERFACE_ADDRESS_ADD is sent in the following situations:
305 * - in response to a 3-byte ZEBRA_INTERFACE_ADD request
306 * from the client, after the ZEBRA_INTERFACE_ADD has been
307 * sent from zebra to the client
308 * - redistribute new address info to all clients in the following situations
309 * - at startup, when zebra figures out the available interfaces
310 * - when an interface is added (where support for
311 * RTM_IFANNOUNCE or AF_NETLINK sockets is available), or when
312 * an interface is marked IFF_UP (i.e., an RTM_IFINFO message is
314 * - for the vty commands "ip address A.B.C.D/M [<secondary>|<label LINE>]"
315 * and "no bandwidth <1-10000000>", "ipv6 address X:X::X:X/M"
316 * - when an RTM_NEWADDR message is received from the kernel,
318 * The call tree that triggers ZEBRA_INTERFACE_ADDRESS_DELETE:
320 * zsend_interface_address(DELETE)
323 * zebra_interface_address_delete_update
325 * | | if_delete_update
327 * ip_address_uninstall connected_delete_ipv4
328 * [ipv6_addresss_uninstall] [connected_delete_ipv6]
331 * | RTM_NEWADDR on routing/netlink socket
334 * "no ip address A.B.C.D/M [label LINE]"
335 * "no ip address A.B.C.D/M secondary"
336 * ["no ipv6 address X:X::X:X/M"]
339 int zsend_interface_address(int cmd
, struct zserv
*client
,
340 struct interface
*ifp
, struct connected
*ifc
)
349 zserv_create_header(s
, cmd
, ifp
->vrf_id
);
350 stream_putl(s
, ifp
->ifindex
);
352 /* Interface address flag. */
353 stream_putc(s
, ifc
->flags
);
355 /* Prefix information. */
357 stream_putc(s
, p
->family
);
358 blen
= prefix_blen(p
);
359 stream_put(s
, &p
->u
.prefix
, blen
);
362 * XXX gnu version does not send prefixlen for
363 * ZEBRA_INTERFACE_ADDRESS_DELETE
364 * but zebra_interface_address_delete_read() in the gnu version
367 stream_putc(s
, p
->prefixlen
);
370 p
= ifc
->destination
;
372 stream_put(s
, &p
->u
.prefix
, blen
);
374 stream_put(s
, NULL
, blen
);
376 /* Write packet size. */
377 stream_putw_at(s
, 0, stream_get_endp(s
));
379 client
->connected_rt_add_cnt
++;
380 return zebra_server_send_message(client
);
383 static int zsend_interface_nbr_address(int cmd
, struct zserv
*client
,
384 struct interface
*ifp
,
385 struct nbr_connected
*ifc
)
394 zserv_create_header(s
, cmd
, ifp
->vrf_id
);
395 stream_putl(s
, ifp
->ifindex
);
397 /* Prefix information. */
399 stream_putc(s
, p
->family
);
400 blen
= prefix_blen(p
);
401 stream_put(s
, &p
->u
.prefix
, blen
);
404 * XXX gnu version does not send prefixlen for
405 * ZEBRA_INTERFACE_ADDRESS_DELETE
406 * but zebra_interface_address_delete_read() in the gnu version
409 stream_putc(s
, p
->prefixlen
);
411 /* Write packet size. */
412 stream_putw_at(s
, 0, stream_get_endp(s
));
414 return zebra_server_send_message(client
);
417 /* Interface address addition. */
418 static void zebra_interface_nbr_address_add_update(struct interface
*ifp
,
419 struct nbr_connected
*ifc
)
421 struct listnode
*node
, *nnode
;
422 struct zserv
*client
;
425 if (IS_ZEBRA_DEBUG_EVENT
) {
426 char buf
[INET6_ADDRSTRLEN
];
430 "MESSAGE: ZEBRA_INTERFACE_NBR_ADDRESS_ADD %s/%d on %s",
431 inet_ntop(p
->family
, &p
->u
.prefix
, buf
,
433 p
->prefixlen
, ifc
->ifp
->name
);
436 for (ALL_LIST_ELEMENTS(zebrad
.client_list
, node
, nnode
, client
))
437 zsend_interface_nbr_address(ZEBRA_INTERFACE_NBR_ADDRESS_ADD
,
441 /* Interface address deletion. */
442 static void zebra_interface_nbr_address_delete_update(struct interface
*ifp
,
443 struct nbr_connected
*ifc
)
445 struct listnode
*node
, *nnode
;
446 struct zserv
*client
;
449 if (IS_ZEBRA_DEBUG_EVENT
) {
450 char buf
[INET6_ADDRSTRLEN
];
454 "MESSAGE: ZEBRA_INTERFACE_NBR_ADDRESS_DELETE %s/%d on %s",
455 inet_ntop(p
->family
, &p
->u
.prefix
, buf
,
457 p
->prefixlen
, ifc
->ifp
->name
);
460 for (ALL_LIST_ELEMENTS(zebrad
.client_list
, node
, nnode
, client
))
461 zsend_interface_nbr_address(ZEBRA_INTERFACE_NBR_ADDRESS_DELETE
,
465 /* Send addresses on interface to client */
466 int zsend_interface_addresses(struct zserv
*client
, struct interface
*ifp
)
468 struct listnode
*cnode
, *cnnode
;
470 struct nbr_connected
*nc
;
472 /* Send interface addresses. */
473 for (ALL_LIST_ELEMENTS(ifp
->connected
, cnode
, cnnode
, c
)) {
474 if (!CHECK_FLAG(c
->conf
, ZEBRA_IFC_REAL
))
477 if (zsend_interface_address(ZEBRA_INTERFACE_ADDRESS_ADD
, client
,
483 /* Send interface neighbors. */
484 for (ALL_LIST_ELEMENTS(ifp
->nbr_connected
, cnode
, cnnode
, nc
)) {
485 if (zsend_interface_nbr_address(ZEBRA_INTERFACE_NBR_ADDRESS_ADD
,
494 /* Notify client about interface moving from one VRF to another.
495 * Whether client is interested in old and new VRF is checked by caller.
497 int zsend_interface_vrf_update(struct zserv
*client
, struct interface
*ifp
,
505 zserv_create_header(s
, ZEBRA_INTERFACE_VRF_UPDATE
, ifp
->vrf_id
);
507 /* Fill in the ifIndex of the interface and its new VRF (id) */
508 stream_putl(s
, ifp
->ifindex
);
509 stream_putw(s
, vrf_id
);
511 /* Write packet size. */
512 stream_putw_at(s
, 0, stream_get_endp(s
));
514 client
->if_vrfchg_cnt
++;
515 return zebra_server_send_message(client
);
518 /* Add new nbr connected IPv6 address */
519 void nbr_connected_add_ipv6(struct interface
*ifp
, struct in6_addr
*address
)
521 struct nbr_connected
*ifc
;
525 IPV6_ADDR_COPY(&p
.u
.prefix
, address
);
526 p
.prefixlen
= IPV6_MAX_PREFIXLEN
;
528 if (!(ifc
= listnode_head(ifp
->nbr_connected
))) {
530 ifc
= nbr_connected_new();
531 ifc
->address
= prefix_new();
533 listnode_add(ifp
->nbr_connected
, ifc
);
536 prefix_copy(ifc
->address
, &p
);
538 zebra_interface_nbr_address_add_update(ifp
, ifc
);
540 if_nbr_ipv6ll_to_ipv4ll_neigh_update(ifp
, address
, 1);
543 void nbr_connected_delete_ipv6(struct interface
*ifp
, struct in6_addr
*address
)
545 struct nbr_connected
*ifc
;
549 IPV6_ADDR_COPY(&p
.u
.prefix
, address
);
550 p
.prefixlen
= IPV6_MAX_PREFIXLEN
;
552 ifc
= nbr_connected_check(ifp
, &p
);
556 listnode_delete(ifp
->nbr_connected
, ifc
);
558 zebra_interface_nbr_address_delete_update(ifp
, ifc
);
560 if_nbr_ipv6ll_to_ipv4ll_neigh_update(ifp
, address
, 0);
562 nbr_connected_free(ifc
);
566 * The cmd passed to zsend_interface_update may be ZEBRA_INTERFACE_UP or
567 * ZEBRA_INTERFACE_DOWN.
569 * The ZEBRA_INTERFACE_UP message is sent from the zebra server to
570 * the clients in one of 2 situations:
571 * - an if_up is detected e.g., as a result of an RTM_IFINFO message
572 * - a vty command modifying the bandwidth of an interface is received.
573 * The ZEBRA_INTERFACE_DOWN message is sent when an if_down is detected.
575 int zsend_interface_update(int cmd
, struct zserv
*client
, struct interface
*ifp
)
582 zserv_create_header(s
, cmd
, ifp
->vrf_id
);
583 zserv_encode_interface(s
, ifp
);
585 if (cmd
== ZEBRA_INTERFACE_UP
)
588 client
->ifdown_cnt
++;
590 return zebra_server_send_message(client
);
594 * This is the new function to announce and withdraw redistributed routes, used
595 * by Zebra. This is the old zsend_route_multipath() function. That function
596 * was duplicating code to send a lot of information that was essentially thrown
597 * away or ignored by the receiver. This is the leaner function that is not a
598 * duplicate of the zapi_ipv4_route_add/del.
600 * The primary difference is that this function merely sends a single NH instead
604 int zsend_redistribute_route(int add
, struct zserv
*client
, struct prefix
*p
,
605 struct prefix
*src_p
, struct route_entry
*re
)
611 struct nexthop
*nexthop
;
612 unsigned long nhnummark
= 0, messmark
= 0;
614 u_char zapi_flags
= 0;
615 struct nexthop dummy_nh
;
617 afi
= family2afi(p
->family
);
621 cmd
= ZEBRA_REDISTRIBUTE_IPV4_ADD
;
622 client
->redist_v4_add_cnt
++;
625 cmd
= ZEBRA_REDISTRIBUTE_IPV6_ADD
;
626 client
->redist_v6_add_cnt
++;
634 cmd
= ZEBRA_REDISTRIBUTE_IPV4_DEL
;
635 client
->redist_v4_del_cnt
++;
638 cmd
= ZEBRA_REDISTRIBUTE_IPV6_DEL
;
639 client
->redist_v6_del_cnt
++;
648 memset(&dummy_nh
, 0, sizeof(struct nexthop
));
650 zserv_create_header(s
, cmd
, re
->vrf_id
);
652 /* Put type and nexthop. */
653 stream_putc(s
, re
->type
);
654 stream_putw(s
, re
->instance
);
655 stream_putl(s
, re
->flags
);
657 /* marker for message flags field */
658 messmark
= stream_get_endp(s
);
662 psize
= PSIZE(p
->prefixlen
);
663 stream_putc(s
, p
->prefixlen
);
664 stream_write(s
, (u_char
*)&p
->u
.prefix
, psize
);
667 SET_FLAG(zapi_flags
, ZAPI_MESSAGE_SRCPFX
);
668 psize
= PSIZE(src_p
->prefixlen
);
669 stream_putc(s
, src_p
->prefixlen
);
670 stream_write(s
, (u_char
*)&src_p
->u
.prefix
, psize
);
673 for (nexthop
= re
->nexthop
; nexthop
; nexthop
= nexthop
->next
) {
674 /* We don't send any nexthops when there's a multipath */
675 if (re
->nexthop_active_num
> 1
676 && client
->proto
!= ZEBRA_ROUTE_LDP
) {
677 SET_FLAG(zapi_flags
, ZAPI_MESSAGE_NEXTHOP
);
678 SET_FLAG(zapi_flags
, ZAPI_MESSAGE_IFINDEX
);
681 if (p
->family
== AF_INET
) {
682 stream_put_in_addr(s
, &dummy_nh
.gate
.ipv4
);
683 } else if (p
->family
== AF_INET6
) {
684 stream_write(s
, (u_char
*)&dummy_nh
.gate
.ipv6
,
687 /* We don't handle anything else now, abort */
689 "%s: Unable to redistribute route of unknown family, %d\n",
690 __func__
, p
->family
);
694 stream_putl(s
, 0); /* dummy ifindex */
698 if (CHECK_FLAG(nexthop
->flags
, NEXTHOP_FLAG_ACTIVE
)) {
699 SET_FLAG(zapi_flags
, ZAPI_MESSAGE_NEXTHOP
);
700 SET_FLAG(zapi_flags
, ZAPI_MESSAGE_IFINDEX
);
701 if (nhnummark
== 0) {
702 nhnummark
= stream_get_endp(s
);
703 stream_putc(s
, 1); /* placeholder */
707 switch (nexthop
->type
) {
708 case NEXTHOP_TYPE_IPV4
:
709 case NEXTHOP_TYPE_IPV4_IFINDEX
:
710 stream_put_in_addr(s
, &nexthop
->gate
.ipv4
);
712 case NEXTHOP_TYPE_IPV6
:
713 case NEXTHOP_TYPE_IPV6_IFINDEX
:
714 /* Only BGP supports IPv4 prefix with IPv6 NH,
716 if (p
->family
== AF_INET
)
717 stream_put_in_addr(s
,
718 &dummy_nh
.gate
.ipv4
);
722 (u_char
*)&nexthop
->gate
.ipv6
,
726 if (cmd
== ZEBRA_REDISTRIBUTE_IPV4_ADD
727 || cmd
== ZEBRA_REDISTRIBUTE_IPV4_DEL
) {
728 struct in_addr empty
;
730 sizeof(struct in_addr
));
731 stream_write(s
, (u_char
*)&empty
,
734 struct in6_addr empty
;
736 sizeof(struct in6_addr
));
737 stream_write(s
, (u_char
*)&empty
,
742 /* Interface index. */
744 stream_putl(s
, nexthop
->ifindex
);
746 /* ldpd needs all nexthops */
747 if (client
->proto
!= ZEBRA_ROUTE_LDP
)
753 SET_FLAG(zapi_flags
, ZAPI_MESSAGE_DISTANCE
);
754 stream_putc(s
, re
->distance
);
757 SET_FLAG(zapi_flags
, ZAPI_MESSAGE_METRIC
);
758 stream_putl(s
, re
->metric
);
762 SET_FLAG(zapi_flags
, ZAPI_MESSAGE_TAG
);
763 stream_putl(s
, re
->tag
);
767 SET_FLAG(zapi_flags
, ZAPI_MESSAGE_MTU
);
768 stream_putl(s
, re
->mtu
);
770 /* write real message flags value */
771 stream_putc_at(s
, messmark
, zapi_flags
);
773 /* Write next-hop number */
775 stream_putc_at(s
, nhnummark
, nhnum
);
777 /* Write packet size. */
778 stream_putw_at(s
, 0, stream_get_endp(s
));
780 return zebra_server_send_message(client
);
783 static int zsend_write_nexthop(struct stream
*s
, struct nexthop
*nexthop
)
785 stream_putc(s
, nexthop
->type
);
786 switch (nexthop
->type
) {
787 case NEXTHOP_TYPE_IPV4
:
788 case NEXTHOP_TYPE_IPV4_IFINDEX
:
789 stream_put_in_addr(s
, &nexthop
->gate
.ipv4
);
790 stream_putl(s
, nexthop
->ifindex
);
792 case NEXTHOP_TYPE_IPV6
:
793 stream_put(s
, &nexthop
->gate
.ipv6
, 16);
795 case NEXTHOP_TYPE_IPV6_IFINDEX
:
796 stream_put(s
, &nexthop
->gate
.ipv6
, 16);
797 stream_putl(s
, nexthop
->ifindex
);
799 case NEXTHOP_TYPE_IFINDEX
:
800 stream_putl(s
, nexthop
->ifindex
);
809 /* Nexthop register */
810 static int zserv_rnh_register(struct zserv
*client
, int sock
, u_short length
,
811 rnh_type_t type
, struct zebra_vrf
*zvrf
)
819 if (IS_ZEBRA_DEBUG_NHT
)
821 "rnh_register msg from client %s: length=%d, type=%s\n",
822 zebra_route_string(client
->proto
), length
,
823 (type
== RNH_NEXTHOP_TYPE
) ? "nexthop" : "route");
827 client
->nh_reg_time
= monotime(NULL
);
830 flags
= stream_getc(s
);
831 p
.family
= stream_getw(s
);
832 p
.prefixlen
= stream_getc(s
);
834 if (p
.family
== AF_INET
) {
835 p
.u
.prefix4
.s_addr
= stream_get_ipv4(s
);
836 l
+= IPV4_MAX_BYTELEN
;
837 } else if (p
.family
== AF_INET6
) {
838 stream_get(&p
.u
.prefix6
, s
, IPV6_MAX_BYTELEN
);
839 l
+= IPV6_MAX_BYTELEN
;
842 "rnh_register: Received unknown family type %d\n",
846 rnh
= zebra_add_rnh(&p
, zvrf_id(zvrf
), type
);
847 if (type
== RNH_NEXTHOP_TYPE
) {
849 && !CHECK_FLAG(rnh
->flags
, ZEBRA_NHT_CONNECTED
))
850 SET_FLAG(rnh
->flags
, ZEBRA_NHT_CONNECTED
);
852 && CHECK_FLAG(rnh
->flags
, ZEBRA_NHT_CONNECTED
))
853 UNSET_FLAG(rnh
->flags
, ZEBRA_NHT_CONNECTED
);
854 } else if (type
== RNH_IMPORT_CHECK_TYPE
) {
856 && !CHECK_FLAG(rnh
->flags
, ZEBRA_NHT_EXACT_MATCH
))
857 SET_FLAG(rnh
->flags
, ZEBRA_NHT_EXACT_MATCH
);
858 else if (!flags
&& CHECK_FLAG(rnh
->flags
,
859 ZEBRA_NHT_EXACT_MATCH
))
860 UNSET_FLAG(rnh
->flags
, ZEBRA_NHT_EXACT_MATCH
);
863 zebra_add_rnh_client(rnh
, client
, type
, zvrf_id(zvrf
));
864 /* Anything not AF_INET/INET6 has been filtered out above */
865 zebra_evaluate_rnh(zvrf_id(zvrf
), p
.family
, 1, type
, &p
);
870 /* Nexthop register */
871 static int zserv_rnh_unregister(struct zserv
*client
, int sock
, u_short length
,
872 rnh_type_t type
, struct zebra_vrf
*zvrf
)
879 if (IS_ZEBRA_DEBUG_NHT
)
880 zlog_debug("rnh_unregister msg from client %s: length=%d\n",
881 zebra_route_string(client
->proto
), length
);
887 s
); // Connected or not. Not used in this function
888 p
.family
= stream_getw(s
);
889 p
.prefixlen
= stream_getc(s
);
891 if (p
.family
== AF_INET
) {
892 p
.u
.prefix4
.s_addr
= stream_get_ipv4(s
);
893 l
+= IPV4_MAX_BYTELEN
;
894 } else if (p
.family
== AF_INET6
) {
895 stream_get(&p
.u
.prefix6
, s
, IPV6_MAX_BYTELEN
);
896 l
+= IPV6_MAX_BYTELEN
;
899 "rnh_register: Received unknown family type %d\n",
903 rnh
= zebra_lookup_rnh(&p
, zvrf_id(zvrf
), type
);
905 client
->nh_dereg_time
= monotime(NULL
);
906 zebra_remove_rnh_client(rnh
, client
, type
);
912 #define ZEBRA_MIN_FEC_LENGTH 5
915 static int zserv_fec_register(struct zserv
*client
, int sock
, u_short length
)
918 struct zebra_vrf
*zvrf
;
922 u_int32_t label_index
= MPLS_INVALID_LABEL_INDEX
;
925 zvrf
= vrf_info_lookup(VRF_DEFAULT
);
927 return 0; // unexpected
930 * The minimum amount of data that can be sent for one fec
933 if (length
< ZEBRA_MIN_FEC_LENGTH
) {
935 "fec_register: Received a fec register of length %d, it is of insufficient size to properly decode",
941 flags
= stream_getw(s
);
942 p
.family
= stream_getw(s
);
943 if (p
.family
!= AF_INET
&& p
.family
!= AF_INET6
) {
945 "fec_register: Received unknown family type %d\n",
949 p
.prefixlen
= stream_getc(s
);
951 stream_get(&p
.u
.prefix
, s
, PSIZE(p
.prefixlen
));
952 l
+= PSIZE(p
.prefixlen
);
953 if (flags
& ZEBRA_FEC_REGISTER_LABEL_INDEX
) {
954 label_index
= stream_getl(s
);
957 label_index
= MPLS_INVALID_LABEL_INDEX
;
958 zebra_mpls_fec_register(zvrf
, &p
, label_index
, client
);
965 static int zserv_fec_unregister(struct zserv
*client
, int sock
, u_short length
)
968 struct zebra_vrf
*zvrf
;
974 zvrf
= vrf_info_lookup(VRF_DEFAULT
);
976 return 0; // unexpected
979 * The minimum amount of data that can be sent for one
982 if (length
< ZEBRA_MIN_FEC_LENGTH
) {
984 "fec_unregister: Received a fec unregister of length %d, it is of insufficient size to properly decode",
990 // flags = stream_getw(s);
991 (void)stream_getw(s
);
992 p
.family
= stream_getw(s
);
993 if (p
.family
!= AF_INET
&& p
.family
!= AF_INET6
) {
995 "fec_unregister: Received unknown family type %d\n",
999 p
.prefixlen
= stream_getc(s
);
1001 stream_get(&p
.u
.prefix
, s
, PSIZE(p
.prefixlen
));
1002 l
+= PSIZE(p
.prefixlen
);
1003 zebra_mpls_fec_unregister(zvrf
, &p
, client
);
1010 Modified version of zsend_ipv4_nexthop_lookup():
1011 Query unicast rib if nexthop is not found on mrib.
1012 Returns both route metric and protocol distance.
1014 static int zsend_ipv4_nexthop_lookup_mrib(struct zserv
*client
,
1015 struct in_addr addr
,
1016 struct route_entry
*re
,
1017 struct zebra_vrf
*zvrf
)
1022 struct nexthop
*nexthop
;
1024 /* Get output stream. */
1028 /* Fill in result. */
1029 zserv_create_header(s
, ZEBRA_IPV4_NEXTHOP_LOOKUP_MRIB
, zvrf_id(zvrf
));
1030 stream_put_in_addr(s
, &addr
);
1033 stream_putc(s
, re
->distance
);
1034 stream_putl(s
, re
->metric
);
1036 nump
= stream_get_endp(
1037 s
); /* remember position for nexthop_num */
1038 stream_putc(s
, 0); /* reserve room for nexthop_num */
1039 /* Only non-recursive routes are elegible to resolve the nexthop
1041 * are looking up. Therefore, we will just iterate over the top
1042 * chain of nexthops. */
1043 for (nexthop
= re
->nexthop
; nexthop
; nexthop
= nexthop
->next
)
1044 if (CHECK_FLAG(nexthop
->flags
, NEXTHOP_FLAG_ACTIVE
))
1045 num
+= zsend_write_nexthop(s
, nexthop
);
1047 stream_putc_at(s
, nump
, num
); /* store nexthop_num */
1049 stream_putc(s
, 0); /* distance */
1050 stream_putl(s
, 0); /* metric */
1051 stream_putc(s
, 0); /* nexthop_num */
1054 stream_putw_at(s
, 0, stream_get_endp(s
));
1056 return zebra_server_send_message(client
);
1059 /* Router-id is updated. Send ZEBRA_ROUTER_ID_ADD to client. */
1060 int zsend_router_id_update(struct zserv
*client
, struct prefix
*p
,
1066 /* Check this client need interface information. */
1067 if (!vrf_bitmap_check(client
->ridinfo
, vrf_id
))
1074 zserv_create_header(s
, ZEBRA_ROUTER_ID_UPDATE
, vrf_id
);
1076 /* Prefix information. */
1077 stream_putc(s
, p
->family
);
1078 blen
= prefix_blen(p
);
1079 stream_put(s
, &p
->u
.prefix
, blen
);
1080 stream_putc(s
, p
->prefixlen
);
1082 /* Write packet size. */
1083 stream_putw_at(s
, 0, stream_get_endp(s
));
1085 return zebra_server_send_message(client
);
1088 /* Register zebra server interface information. Send current all
1089 interface and address information. */
1090 static int zread_interface_add(struct zserv
*client
, u_short length
,
1091 struct zebra_vrf
*zvrf
)
1094 struct listnode
*ifnode
, *ifnnode
;
1095 struct interface
*ifp
;
1097 /* Interface information is needed. */
1098 vrf_bitmap_set(client
->ifinfo
, zvrf_id(zvrf
));
1100 RB_FOREACH(vrf
, vrf_id_head
, &vrfs_by_id
)
1102 for (ALL_LIST_ELEMENTS(vrf
->iflist
, ifnode
, ifnnode
, ifp
)) {
1103 /* Skip pseudo interface. */
1104 if (!CHECK_FLAG(ifp
->status
, ZEBRA_INTERFACE_ACTIVE
))
1107 if (zsend_interface_add(client
, ifp
) < 0)
1110 if (zsend_interface_addresses(client
, ifp
) < 0)
1117 /* Unregister zebra server interface information. */
1118 static int zread_interface_delete(struct zserv
*client
, u_short length
,
1119 struct zebra_vrf
*zvrf
)
1121 vrf_bitmap_unset(client
->ifinfo
, zvrf_id(zvrf
));
1125 void zserv_nexthop_num_warn(const char *caller
, const struct prefix
*p
,
1126 const unsigned int nexthop_num
)
1128 if (nexthop_num
> multipath_num
) {
1129 char buff
[PREFIX2STR_BUFFER
];
1130 prefix2str(p
, buff
, sizeof(buff
));
1132 "%s: Prefix %s has %d nexthops, but we can only use the first %d",
1133 caller
, buff
, nexthop_num
, multipath_num
);
1137 /* This function support multiple nexthop. */
1139 * Parse the ZEBRA_IPV4_ROUTE_ADD sent from client. Update re and
1142 static int zread_ipv4_add(struct zserv
*client
, u_short length
,
1143 struct zebra_vrf
*zvrf
)
1146 struct route_entry
*re
;
1149 struct in_addr nhop_addr
;
1151 u_char nexthop_type
;
1157 struct nexthop
*nexthop
;
1159 /* Get input stream. */
1162 /* Allocate new re. */
1163 re
= XCALLOC(MTYPE_RE
, sizeof(struct route_entry
));
1165 /* Type, flags, message. */
1166 re
->type
= stream_getc(s
);
1167 re
->instance
= stream_getw(s
);
1168 re
->flags
= stream_getl(s
);
1169 message
= stream_getc(s
);
1170 safi
= stream_getw(s
);
1171 re
->uptime
= time(NULL
);
1174 memset(&p
, 0, sizeof(struct prefix_ipv4
));
1176 p
.prefixlen
= stream_getc(s
);
1177 stream_get(&p
.u
.prefix4
, s
, PSIZE(p
.prefixlen
));
1180 re
->vrf_id
= zvrf_id(zvrf
);
1182 /* Nexthop parse. */
1183 if (CHECK_FLAG(message
, ZAPI_MESSAGE_NEXTHOP
)) {
1184 nexthop_num
= stream_getc(s
);
1185 zserv_nexthop_num_warn(__func__
, (const struct prefix
*)&p
,
1188 for (i
= 0; i
< nexthop_num
; i
++) {
1189 nexthop_type
= stream_getc(s
);
1191 switch (nexthop_type
) {
1192 case NEXTHOP_TYPE_IFINDEX
:
1193 ifindex
= stream_getl(s
);
1194 route_entry_nexthop_ifindex_add(re
, ifindex
);
1196 case NEXTHOP_TYPE_IPV4
:
1197 nhop_addr
.s_addr
= stream_get_ipv4(s
);
1198 nexthop
= route_entry_nexthop_ipv4_add(
1199 re
, &nhop_addr
, NULL
);
1200 /* For labeled-unicast, each nexthop is followed
1202 if (CHECK_FLAG(message
, ZAPI_MESSAGE_LABEL
)) {
1203 label
= (mpls_label_t
)stream_getl(s
);
1205 nexthop
, nexthop
->nh_label_type
,
1209 case NEXTHOP_TYPE_IPV4_IFINDEX
:
1210 nhop_addr
.s_addr
= stream_get_ipv4(s
);
1211 ifindex
= stream_getl(s
);
1212 route_entry_nexthop_ipv4_ifindex_add(
1213 re
, &nhop_addr
, NULL
, ifindex
);
1215 case NEXTHOP_TYPE_IPV6
:
1216 stream_forward_getp(s
, IPV6_MAX_BYTELEN
);
1218 case NEXTHOP_TYPE_BLACKHOLE
:
1219 route_entry_nexthop_blackhole_add(re
);
1226 if (CHECK_FLAG(message
, ZAPI_MESSAGE_DISTANCE
))
1227 re
->distance
= stream_getc(s
);
1230 if (CHECK_FLAG(message
, ZAPI_MESSAGE_METRIC
))
1231 re
->metric
= stream_getl(s
);
1234 if (CHECK_FLAG(message
, ZAPI_MESSAGE_TAG
))
1235 re
->tag
= stream_getl(s
);
1239 if (CHECK_FLAG(message
, ZAPI_MESSAGE_MTU
))
1240 re
->mtu
= stream_getl(s
);
1245 re
->table
= zvrf
->table_id
;
1247 ret
= rib_add_multipath(AFI_IP
, safi
, &p
, NULL
, re
);
1251 client
->v4_route_add_cnt
++;
1253 client
->v4_route_upd8_cnt
++;
1257 /* Zebra server IPv4 prefix delete function. */
1258 static int zread_ipv4_delete(struct zserv
*client
, u_short length
,
1259 struct zebra_vrf
*zvrf
)
1263 struct zapi_ipv4 api
;
1264 struct in_addr nexthop
;
1265 union g_addr
*nexthop_p
;
1266 unsigned long ifindex
;
1269 u_char nexthop_type
;
1277 /* Type, flags, message. */
1278 api
.type
= stream_getc(s
);
1279 api
.instance
= stream_getw(s
);
1280 api
.flags
= stream_getl(s
);
1281 api
.message
= stream_getc(s
);
1282 api
.safi
= stream_getw(s
);
1285 memset(&p
, 0, sizeof(struct prefix
));
1287 p
.prefixlen
= stream_getc(s
);
1288 stream_get(&p
.u
.prefix4
, s
, PSIZE(p
.prefixlen
));
1290 /* Nexthop, ifindex, distance, metric. */
1291 if (CHECK_FLAG(api
.message
, ZAPI_MESSAGE_NEXTHOP
)) {
1292 nexthop_num
= stream_getc(s
);
1294 for (i
= 0; i
< nexthop_num
; i
++) {
1295 nexthop_type
= stream_getc(s
);
1297 switch (nexthop_type
) {
1298 case NEXTHOP_TYPE_IFINDEX
:
1299 ifindex
= stream_getl(s
);
1301 case NEXTHOP_TYPE_IPV4
:
1302 nexthop
.s_addr
= stream_get_ipv4(s
);
1303 /* For labeled-unicast, each nexthop is followed
1305 * we don't care for delete.
1307 if (CHECK_FLAG(api
.message
, ZAPI_MESSAGE_LABEL
))
1308 stream_forward_getp(s
,
1310 nexthop_p
= (union g_addr
*)&nexthop
;
1312 case NEXTHOP_TYPE_IPV4_IFINDEX
:
1313 nexthop
.s_addr
= stream_get_ipv4(s
);
1314 nexthop_p
= (union g_addr
*)&nexthop
;
1315 ifindex
= stream_getl(s
);
1317 case NEXTHOP_TYPE_IPV6
:
1318 stream_forward_getp(s
, IPV6_MAX_BYTELEN
);
1325 if (CHECK_FLAG(api
.message
, ZAPI_MESSAGE_DISTANCE
))
1326 api
.distance
= stream_getc(s
);
1331 if (CHECK_FLAG(api
.message
, ZAPI_MESSAGE_METRIC
))
1332 api
.metric
= stream_getl(s
);
1337 if (CHECK_FLAG(api
.message
, ZAPI_MESSAGE_TAG
))
1338 api
.tag
= stream_getl(s
);
1342 table_id
= zvrf
->table_id
;
1344 rib_delete(AFI_IP
, api
.safi
, zvrf_id(zvrf
), api
.type
, api
.instance
,
1345 api
.flags
, &p
, NULL
, nexthop_p
, ifindex
, table_id
);
1346 client
->v4_route_del_cnt
++;
1350 /* MRIB Nexthop lookup for IPv4. */
1351 static int zread_ipv4_nexthop_lookup_mrib(struct zserv
*client
, u_short length
,
1352 struct zebra_vrf
*zvrf
)
1354 struct in_addr addr
;
1355 struct route_entry
*re
;
1357 addr
.s_addr
= stream_get_ipv4(client
->ibuf
);
1358 re
= rib_match_ipv4_multicast(zvrf_id(zvrf
), addr
, NULL
);
1359 return zsend_ipv4_nexthop_lookup_mrib(client
, addr
, re
, zvrf
);
1362 /* Zebra server IPv6 prefix add function. */
1363 static int zread_ipv4_route_ipv6_nexthop_add(struct zserv
*client
,
1365 struct zebra_vrf
*zvrf
)
1369 struct in6_addr nhop_addr
;
1370 struct route_entry
*re
;
1373 u_char nexthop_type
;
1376 static struct in6_addr nexthops
[MULTIPATH_NUM
];
1377 static unsigned int ifindices
[MULTIPATH_NUM
];
1379 static mpls_label_t labels
[MULTIPATH_NUM
];
1381 struct nexthop
*nexthop
;
1383 /* Get input stream. */
1386 memset(&nhop_addr
, 0, sizeof(struct in6_addr
));
1388 /* Allocate new re. */
1389 re
= XCALLOC(MTYPE_RE
, sizeof(struct route_entry
));
1391 /* Type, flags, message. */
1392 re
->type
= stream_getc(s
);
1393 re
->instance
= stream_getw(s
);
1394 re
->flags
= stream_getl(s
);
1395 message
= stream_getc(s
);
1396 safi
= stream_getw(s
);
1397 re
->uptime
= time(NULL
);
1400 memset(&p
, 0, sizeof(struct prefix_ipv4
));
1402 p
.prefixlen
= stream_getc(s
);
1403 stream_get(&p
.u
.prefix4
, s
, PSIZE(p
.prefixlen
));
1406 re
->vrf_id
= zvrf_id(zvrf
);
1408 /* We need to give nh-addr, nh-ifindex with the same next-hop object
1409 * to the re to ensure that IPv6 multipathing works; need to coalesce
1410 * these. Clients should send the same number of paired set of
1411 * next-hop-addr/next-hop-ifindices. */
1412 if (CHECK_FLAG(message
, ZAPI_MESSAGE_NEXTHOP
)) {
1413 unsigned int nh_count
= 0;
1414 unsigned int if_count
= 0;
1415 unsigned int max_nh_if
= 0;
1417 nexthop_num
= stream_getc(s
);
1418 zserv_nexthop_num_warn(__func__
, (const struct prefix
*)&p
,
1420 for (i
= 0; i
< nexthop_num
; i
++) {
1421 nexthop_type
= stream_getc(s
);
1423 switch (nexthop_type
) {
1424 case NEXTHOP_TYPE_IPV6
:
1425 stream_get(&nhop_addr
, s
, 16);
1426 if (nh_count
< MULTIPATH_NUM
) {
1427 /* For labeled-unicast, each nexthop is
1428 * followed by label. */
1429 if (CHECK_FLAG(message
,
1430 ZAPI_MESSAGE_LABEL
)) {
1431 label
= (mpls_label_t
)
1433 labels
[nh_count
] = label
;
1435 nexthops
[nh_count
] = nhop_addr
;
1439 case NEXTHOP_TYPE_IFINDEX
:
1440 if (if_count
< multipath_num
) {
1441 ifindices
[if_count
++] = stream_getl(s
);
1444 case NEXTHOP_TYPE_BLACKHOLE
:
1445 route_entry_nexthop_blackhole_add(re
);
1450 max_nh_if
= (nh_count
> if_count
) ? nh_count
: if_count
;
1451 for (i
= 0; i
< max_nh_if
; i
++) {
1453 && !IN6_IS_ADDR_UNSPECIFIED(&nexthops
[i
])) {
1454 if ((i
< if_count
) && ifindices
[i
])
1456 route_entry_nexthop_ipv6_ifindex_add(
1460 nexthop
= route_entry_nexthop_ipv6_add(
1463 if (CHECK_FLAG(message
, ZAPI_MESSAGE_LABEL
))
1465 nexthop
, nexthop
->nh_label_type
,
1468 if ((i
< if_count
) && ifindices
[i
])
1469 route_entry_nexthop_ifindex_add(
1476 if (CHECK_FLAG(message
, ZAPI_MESSAGE_DISTANCE
))
1477 re
->distance
= stream_getc(s
);
1480 if (CHECK_FLAG(message
, ZAPI_MESSAGE_METRIC
))
1481 re
->metric
= stream_getl(s
);
1484 if (CHECK_FLAG(message
, ZAPI_MESSAGE_TAG
))
1485 re
->tag
= stream_getl(s
);
1489 if (CHECK_FLAG(message
, ZAPI_MESSAGE_MTU
))
1490 re
->mtu
= stream_getl(s
);
1495 re
->table
= zvrf
->table_id
;
1497 ret
= rib_add_multipath(AFI_IP6
, safi
, &p
, NULL
, re
);
1500 client
->v4_route_add_cnt
++;
1502 client
->v4_route_upd8_cnt
++;
1507 static int zread_ipv6_add(struct zserv
*client
, u_short length
,
1508 struct zebra_vrf
*zvrf
)
1512 struct in6_addr nhop_addr
;
1513 struct route_entry
*re
;
1516 u_char nexthop_type
;
1518 struct prefix_ipv6 src_p
, *src_pp
;
1520 static struct in6_addr nexthops
[MULTIPATH_NUM
];
1521 static unsigned int ifindices
[MULTIPATH_NUM
];
1523 static mpls_label_t labels
[MULTIPATH_NUM
];
1525 struct nexthop
*nexthop
;
1527 /* Get input stream. */
1530 memset(&nhop_addr
, 0, sizeof(struct in6_addr
));
1532 /* Allocate new re. */
1533 re
= XCALLOC(MTYPE_RE
, sizeof(struct route_entry
));
1535 /* Type, flags, message. */
1536 re
->type
= stream_getc(s
);
1537 re
->instance
= stream_getw(s
);
1538 re
->flags
= stream_getl(s
);
1539 message
= stream_getc(s
);
1540 safi
= stream_getw(s
);
1541 re
->uptime
= time(NULL
);
1544 memset(&p
, 0, sizeof(struct prefix_ipv6
));
1545 p
.family
= AF_INET6
;
1546 p
.prefixlen
= stream_getc(s
);
1547 stream_get(&p
.u
.prefix6
, s
, PSIZE(p
.prefixlen
));
1549 if (CHECK_FLAG(message
, ZAPI_MESSAGE_SRCPFX
)) {
1550 memset(&src_p
, 0, sizeof(struct prefix_ipv6
));
1551 src_p
.family
= AF_INET6
;
1552 src_p
.prefixlen
= stream_getc(s
);
1553 stream_get(&src_p
.prefix
, s
, PSIZE(src_p
.prefixlen
));
1558 /* We need to give nh-addr, nh-ifindex with the same next-hop object
1559 * to the re to ensure that IPv6 multipathing works; need to coalesce
1560 * these. Clients should send the same number of paired set of
1561 * next-hop-addr/next-hop-ifindices. */
1562 if (CHECK_FLAG(message
, ZAPI_MESSAGE_NEXTHOP
)) {
1563 unsigned int nh_count
= 0;
1564 unsigned int if_count
= 0;
1565 unsigned int max_nh_if
= 0;
1567 nexthop_num
= stream_getc(s
);
1568 zserv_nexthop_num_warn(__func__
, (const struct prefix
*)&p
,
1570 for (i
= 0; i
< nexthop_num
; i
++) {
1571 nexthop_type
= stream_getc(s
);
1573 switch (nexthop_type
) {
1574 case NEXTHOP_TYPE_IPV6
:
1575 stream_get(&nhop_addr
, s
, 16);
1576 if (nh_count
< MULTIPATH_NUM
) {
1577 /* For labeled-unicast, each nexthop is
1578 * followed by label. */
1579 if (CHECK_FLAG(message
,
1580 ZAPI_MESSAGE_LABEL
)) {
1581 label
= (mpls_label_t
)
1583 labels
[nh_count
] = label
;
1585 nexthops
[nh_count
++] = nhop_addr
;
1588 case NEXTHOP_TYPE_IFINDEX
:
1589 if (if_count
< multipath_num
) {
1590 ifindices
[if_count
++] = stream_getl(s
);
1593 case NEXTHOP_TYPE_BLACKHOLE
:
1594 route_entry_nexthop_blackhole_add(re
);
1599 max_nh_if
= (nh_count
> if_count
) ? nh_count
: if_count
;
1600 for (i
= 0; i
< max_nh_if
; i
++) {
1602 && !IN6_IS_ADDR_UNSPECIFIED(&nexthops
[i
])) {
1603 if ((i
< if_count
) && ifindices
[i
])
1605 route_entry_nexthop_ipv6_ifindex_add(
1609 nexthop
= route_entry_nexthop_ipv6_add(
1611 if (CHECK_FLAG(message
, ZAPI_MESSAGE_LABEL
))
1613 nexthop
, nexthop
->nh_label_type
,
1616 if ((i
< if_count
) && ifindices
[i
])
1617 route_entry_nexthop_ifindex_add(
1624 if (CHECK_FLAG(message
, ZAPI_MESSAGE_DISTANCE
))
1625 re
->distance
= stream_getc(s
);
1628 if (CHECK_FLAG(message
, ZAPI_MESSAGE_METRIC
))
1629 re
->metric
= stream_getl(s
);
1632 if (CHECK_FLAG(message
, ZAPI_MESSAGE_TAG
))
1633 re
->tag
= stream_getl(s
);
1637 if (CHECK_FLAG(message
, ZAPI_MESSAGE_MTU
))
1638 re
->mtu
= stream_getl(s
);
1643 re
->vrf_id
= zvrf_id(zvrf
);
1644 re
->table
= zvrf
->table_id
;
1646 ret
= rib_add_multipath(AFI_IP6
, safi
, &p
, src_pp
, re
);
1649 client
->v6_route_add_cnt
++;
1651 client
->v6_route_upd8_cnt
++;
1656 /* Zebra server IPv6 prefix delete function. */
1657 static int zread_ipv6_delete(struct zserv
*client
, u_short length
,
1658 struct zebra_vrf
*zvrf
)
1662 struct zapi_ipv6 api
;
1663 struct in6_addr nexthop
;
1664 union g_addr
*pnexthop
= NULL
;
1665 unsigned long ifindex
;
1667 struct prefix_ipv6 src_p
, *src_pp
;
1671 memset(&nexthop
, 0, sizeof(struct in6_addr
));
1673 /* Type, flags, message. */
1674 api
.type
= stream_getc(s
);
1675 api
.instance
= stream_getw(s
);
1676 api
.flags
= stream_getl(s
);
1677 api
.message
= stream_getc(s
);
1678 api
.safi
= stream_getw(s
);
1681 memset(&p
, 0, sizeof(struct prefix_ipv6
));
1682 p
.family
= AF_INET6
;
1683 p
.prefixlen
= stream_getc(s
);
1684 stream_get(&p
.u
.prefix6
, s
, PSIZE(p
.prefixlen
));
1686 if (CHECK_FLAG(api
.message
, ZAPI_MESSAGE_SRCPFX
)) {
1687 memset(&src_p
, 0, sizeof(struct prefix_ipv6
));
1688 src_p
.family
= AF_INET6
;
1689 src_p
.prefixlen
= stream_getc(s
);
1690 stream_get(&src_p
.prefix
, s
, PSIZE(src_p
.prefixlen
));
1695 /* Nexthop, ifindex, distance, metric. */
1696 if (CHECK_FLAG(api
.message
, ZAPI_MESSAGE_NEXTHOP
)) {
1697 u_char nexthop_type
;
1699 api
.nexthop_num
= stream_getc(s
);
1700 for (i
= 0; i
< api
.nexthop_num
; i
++) {
1701 nexthop_type
= stream_getc(s
);
1703 switch (nexthop_type
) {
1704 case NEXTHOP_TYPE_IPV6
:
1705 stream_get(&nexthop
, s
, 16);
1706 /* For labeled-unicast, each nexthop is followed
1708 * we don't care for delete.
1710 if (CHECK_FLAG(api
.message
, ZAPI_MESSAGE_LABEL
))
1711 stream_forward_getp(s
,
1713 pnexthop
= (union g_addr
*)&nexthop
;
1715 case NEXTHOP_TYPE_IFINDEX
:
1716 ifindex
= stream_getl(s
);
1723 if (CHECK_FLAG(api
.message
, ZAPI_MESSAGE_DISTANCE
))
1724 api
.distance
= stream_getc(s
);
1729 if (CHECK_FLAG(api
.message
, ZAPI_MESSAGE_METRIC
))
1730 api
.metric
= stream_getl(s
);
1735 if (CHECK_FLAG(api
.message
, ZAPI_MESSAGE_TAG
))
1736 api
.tag
= stream_getl(s
);
1740 if (IN6_IS_ADDR_UNSPECIFIED(&nexthop
))
1741 rib_delete(AFI_IP6
, api
.safi
, zvrf_id(zvrf
), api
.type
,
1742 api
.instance
, api
.flags
, &p
, src_pp
, NULL
, ifindex
,
1745 rib_delete(AFI_IP6
, api
.safi
, zvrf_id(zvrf
), api
.type
,
1746 api
.instance
, api
.flags
, &p
, src_pp
, pnexthop
,
1747 ifindex
, client
->rtm_table
);
1749 client
->v6_route_del_cnt
++;
1753 /* Register zebra server router-id information. Send current router-id */
1754 static int zread_router_id_add(struct zserv
*client
, u_short length
,
1755 struct zebra_vrf
*zvrf
)
1759 /* Router-id information is needed. */
1760 vrf_bitmap_set(client
->ridinfo
, zvrf_id(zvrf
));
1762 router_id_get(&p
, zvrf_id(zvrf
));
1764 return zsend_router_id_update(client
, &p
, zvrf_id(zvrf
));
1767 /* Unregister zebra server router-id information. */
1768 static int zread_router_id_delete(struct zserv
*client
, u_short length
,
1769 struct zebra_vrf
*zvrf
)
1771 vrf_bitmap_unset(client
->ridinfo
, zvrf_id(zvrf
));
1775 /* Tie up route-type and client->sock */
1776 static void zread_hello(struct zserv
*client
)
1778 /* type of protocol (lib/zebra.h) */
1782 proto
= stream_getc(client
->ibuf
);
1783 instance
= stream_getw(client
->ibuf
);
1785 /* accept only dynamic routing protocols */
1786 if ((proto
< ZEBRA_ROUTE_MAX
) && (proto
> ZEBRA_ROUTE_STATIC
)) {
1788 "client %d says hello and bids fair to announce only %s routes",
1789 client
->sock
, zebra_route_string(proto
));
1791 zlog_notice("client protocol instance %d", instance
);
1793 client
->proto
= proto
;
1794 client
->instance
= instance
;
1798 /* Unregister all information in a VRF. */
1799 static int zread_vrf_unregister(struct zserv
*client
, u_short length
,
1800 struct zebra_vrf
*zvrf
)
1805 for (afi
= AFI_IP
; afi
< AFI_MAX
; afi
++)
1806 for (i
= 0; i
< ZEBRA_ROUTE_MAX
; i
++)
1807 vrf_bitmap_unset(client
->redist
[afi
][i
], zvrf_id(zvrf
));
1808 vrf_bitmap_unset(client
->redist_default
, zvrf_id(zvrf
));
1809 vrf_bitmap_unset(client
->ifinfo
, zvrf_id(zvrf
));
1810 vrf_bitmap_unset(client
->ridinfo
, zvrf_id(zvrf
));
1815 static void zread_mpls_labels(int command
, struct zserv
*client
, u_short length
,
1819 enum lsp_types_t type
;
1820 struct prefix prefix
;
1821 enum nexthop_types_t gtype
;
1824 mpls_label_t in_label
, out_label
;
1826 struct zebra_vrf
*zvrf
;
1828 zvrf
= vrf_info_lookup(vrf_id
);
1832 /* Get input stream. */
1836 type
= stream_getc(s
);
1837 prefix
.family
= stream_getl(s
);
1838 switch (prefix
.family
) {
1840 prefix
.u
.prefix4
.s_addr
= stream_get_ipv4(s
);
1841 prefix
.prefixlen
= stream_getc(s
);
1842 gate
.ipv4
.s_addr
= stream_get_ipv4(s
);
1845 stream_get(&prefix
.u
.prefix6
, s
, 16);
1846 prefix
.prefixlen
= stream_getc(s
);
1847 stream_get(&gate
.ipv6
, s
, 16);
1852 ifindex
= stream_getl(s
);
1853 distance
= stream_getc(s
);
1854 in_label
= stream_getl(s
);
1855 out_label
= stream_getl(s
);
1857 switch (prefix
.family
) {
1860 gtype
= NEXTHOP_TYPE_IPV4_IFINDEX
;
1862 gtype
= NEXTHOP_TYPE_IPV4
;
1866 gtype
= NEXTHOP_TYPE_IPV6_IFINDEX
;
1868 gtype
= NEXTHOP_TYPE_IPV6
;
1877 if (command
== ZEBRA_MPLS_LABELS_ADD
) {
1878 mpls_lsp_install(zvrf
, type
, in_label
, out_label
, gtype
, &gate
,
1880 if (out_label
!= MPLS_IMP_NULL_LABEL
)
1881 mpls_ftn_update(1, zvrf
, type
, &prefix
, gtype
, &gate
,
1882 ifindex
, distance
, out_label
);
1883 } else if (command
== ZEBRA_MPLS_LABELS_DELETE
) {
1884 mpls_lsp_uninstall(zvrf
, type
, in_label
, gtype
, &gate
, ifindex
);
1885 if (out_label
!= MPLS_IMP_NULL_LABEL
)
1886 mpls_ftn_update(0, zvrf
, type
, &prefix
, gtype
, &gate
,
1887 ifindex
, distance
, out_label
);
1890 /* Send response to a label manager connect request to client */
1891 static int zsend_label_manager_connect_response(struct zserv
*client
,
1892 vrf_id_t vrf_id
, u_short result
)
1899 zserv_create_header(s
, ZEBRA_LABEL_MANAGER_CONNECT
, vrf_id
);
1902 stream_putc(s
, result
);
1904 /* Write packet size. */
1905 stream_putw_at(s
, 0, stream_get_endp(s
));
1907 return writen(client
->sock
, s
->data
, stream_get_endp(s
));
1910 static void zread_label_manager_connect(struct zserv
*client
, vrf_id_t vrf_id
)
1913 /* type of protocol (lib/zebra.h) */
1917 /* Get input stream. */
1921 proto
= stream_getc(s
);
1922 instance
= stream_getw(s
);
1924 /* accept only dynamic routing protocols */
1925 if ((proto
>= ZEBRA_ROUTE_MAX
) || (proto
<= ZEBRA_ROUTE_STATIC
)) {
1926 zlog_err("client %d has wrong protocol %s", client
->sock
,
1927 zebra_route_string(proto
));
1928 zsend_label_manager_connect_response(client
, vrf_id
, 1);
1931 zlog_notice("client %d with instance %u connected as %s", client
->sock
,
1932 instance
, zebra_route_string(proto
));
1933 client
->proto
= proto
;
1934 client
->instance
= instance
;
1937 Release previous labels of same protocol and instance.
1938 This is done in case it restarted from an unexpected shutdown.
1940 release_daemon_chunks(proto
, instance
);
1943 " Label Manager client connected: sock %d, proto %s, instance %u",
1944 client
->sock
, zebra_route_string(proto
), instance
);
1945 /* send response back */
1946 zsend_label_manager_connect_response(client
, vrf_id
, 0);
1948 /* Send response to a get label chunk request to client */
1949 static int zsend_assign_label_chunk_response(struct zserv
*client
,
1951 struct label_manager_chunk
*lmc
)
1958 zserv_create_header(s
, ZEBRA_GET_LABEL_CHUNK
, vrf_id
);
1962 stream_putc(s
, lmc
->keep
);
1963 /* start and end labels */
1964 stream_putl(s
, lmc
->start
);
1965 stream_putl(s
, lmc
->end
);
1968 /* Write packet size. */
1969 stream_putw_at(s
, 0, stream_get_endp(s
));
1971 return writen(client
->sock
, s
->data
, stream_get_endp(s
));
1974 static void zread_get_label_chunk(struct zserv
*client
, vrf_id_t vrf_id
)
1979 struct label_manager_chunk
*lmc
;
1981 /* Get input stream. */
1985 keep
= stream_getc(s
);
1986 size
= stream_getl(s
);
1988 lmc
= assign_label_chunk(client
->proto
, client
->instance
, keep
, size
);
1990 zlog_err("%s: Unable to assign Label Chunk of size %u",
1993 zlog_debug("Assigned Label Chunk %u - %u to %u", lmc
->start
,
1995 /* send response back */
1996 zsend_assign_label_chunk_response(client
, vrf_id
, lmc
);
1999 static void zread_release_label_chunk(struct zserv
*client
)
2002 uint32_t start
, end
;
2004 /* Get input stream. */
2008 start
= stream_getl(s
);
2009 end
= stream_getl(s
);
2011 release_label_chunk(client
->proto
, client
->instance
, start
, end
);
2013 static void zread_label_manager_request(int cmd
, struct zserv
*client
,
2016 /* to avoid sending other messages like ZERBA_INTERFACE_UP */
2017 if (cmd
== ZEBRA_LABEL_MANAGER_CONNECT
)
2018 client
->is_synchronous
= 1;
2020 /* external label manager */
2022 zread_relay_label_manager_request(cmd
, client
, vrf_id
);
2023 /* this is a label manager */
2025 if (cmd
== ZEBRA_LABEL_MANAGER_CONNECT
)
2026 zread_label_manager_connect(client
, vrf_id
);
2028 /* Sanity: don't allow 'unidentified' requests */
2029 if (!client
->proto
) {
2031 "Got label request from an unidentified client");
2034 if (cmd
== ZEBRA_GET_LABEL_CHUNK
)
2035 zread_get_label_chunk(client
, vrf_id
);
2036 else if (cmd
== ZEBRA_RELEASE_LABEL_CHUNK
)
2037 zread_release_label_chunk(client
);
2042 /* Cleanup registered nexthops (across VRFs) upon client disconnect. */
2043 static void zebra_client_close_cleanup_rnh(struct zserv
*client
)
2046 struct zebra_vrf
*zvrf
;
2048 RB_FOREACH(vrf
, vrf_id_head
, &vrfs_by_id
)
2050 if ((zvrf
= vrf
->info
) != NULL
) {
2051 zebra_cleanup_rnh_client(zvrf_id(zvrf
), AF_INET
, client
,
2053 zebra_cleanup_rnh_client(zvrf_id(zvrf
), AF_INET6
,
2054 client
, RNH_NEXTHOP_TYPE
);
2055 zebra_cleanup_rnh_client(zvrf_id(zvrf
), AF_INET
, client
,
2056 RNH_IMPORT_CHECK_TYPE
);
2057 zebra_cleanup_rnh_client(zvrf_id(zvrf
), AF_INET6
,
2058 client
, RNH_IMPORT_CHECK_TYPE
);
2059 if (client
->proto
== ZEBRA_ROUTE_LDP
) {
2060 hash_iterate(zvrf
->lsp_table
,
2061 mpls_ldp_lsp_uninstall_all
,
2063 mpls_ldp_ftn_uninstall_all(zvrf
, AFI_IP
);
2064 mpls_ldp_ftn_uninstall_all(zvrf
, AFI_IP6
);
2070 /* Close zebra client. */
2071 static void zebra_client_close(struct zserv
*client
)
2073 /* Send client de-registration to BFD */
2074 zebra_ptm_bfd_client_deregister(client
->proto
);
2076 /* Cleanup any registered nexthops - across all VRFs. */
2077 zebra_client_close_cleanup_rnh(client
);
2079 /* Release Label Manager chunks */
2080 release_daemon_chunks(client
->proto
, client
->instance
);
2082 /* Cleanup any FECs registered by this client. */
2083 zebra_mpls_cleanup_fecs_for_client(vrf_info_lookup(VRF_DEFAULT
),
2086 /* Close file descriptor. */
2088 unsigned long nroutes
;
2090 close(client
->sock
);
2091 nroutes
= rib_score_proto(client
->proto
, client
->instance
);
2093 "client %d disconnected. %lu %s routes removed from the rib",
2094 client
->sock
, nroutes
,
2095 zebra_route_string(client
->proto
));
2099 /* Free stream buffers. */
2101 stream_free(client
->ibuf
);
2103 stream_free(client
->obuf
);
2105 buffer_free(client
->wb
);
2107 /* Release threads. */
2109 thread_cancel(client
->t_read
);
2110 if (client
->t_write
)
2111 thread_cancel(client
->t_write
);
2112 if (client
->t_suicide
)
2113 thread_cancel(client
->t_suicide
);
2116 for (afi_t afi
= AFI_IP
; afi
< AFI_MAX
; afi
++)
2117 for (int i
= 0; i
< ZEBRA_ROUTE_MAX
; i
++)
2118 vrf_bitmap_free(client
->redist
[afi
][i
]);
2120 vrf_bitmap_free(client
->redist_default
);
2121 vrf_bitmap_free(client
->ifinfo
);
2122 vrf_bitmap_free(client
->ridinfo
);
2124 /* Free client structure. */
2125 listnode_delete(zebrad
.client_list
, client
);
2126 XFREE(MTYPE_TMP
, client
);
2129 /* Make new client. */
2130 static void zebra_client_create(int sock
)
2132 struct zserv
*client
;
2136 client
= XCALLOC(MTYPE_TMP
, sizeof(struct zserv
));
2138 /* Make client input/output buffer. */
2139 client
->sock
= sock
;
2140 client
->ibuf
= stream_new(ZEBRA_MAX_PACKET_SIZ
);
2141 client
->obuf
= stream_new(ZEBRA_MAX_PACKET_SIZ
);
2142 client
->wb
= buffer_new(0);
2144 /* Set table number. */
2145 client
->rtm_table
= zebrad
.rtm_table_default
;
2147 client
->connect_time
= monotime(NULL
);
2148 /* Initialize flags */
2149 for (afi
= AFI_IP
; afi
< AFI_MAX
; afi
++)
2150 for (i
= 0; i
< ZEBRA_ROUTE_MAX
; i
++)
2151 client
->redist
[afi
][i
] = vrf_bitmap_init();
2152 client
->redist_default
= vrf_bitmap_init();
2153 client
->ifinfo
= vrf_bitmap_init();
2154 client
->ridinfo
= vrf_bitmap_init();
2156 /* by default, it's not a synchronous client */
2157 client
->is_synchronous
= 0;
2159 /* Add this client to linked list. */
2160 listnode_add(zebrad
.client_list
, client
);
2162 /* Make new read thread. */
2163 zebra_event(ZEBRA_READ
, sock
, client
);
2165 zebra_vrf_update_all(client
);
2168 static int zread_interface_set_master(struct zserv
*client
, int sock
,
2171 struct interface
*master
;
2172 struct interface
*slave
;
2173 struct stream
*s
= client
->ibuf
;
2177 vrf_id
= stream_getw(s
);
2178 ifindex
= stream_getl(s
);
2179 master
= if_lookup_by_index(ifindex
, vrf_id
);
2181 vrf_id
= stream_getw(s
);
2182 ifindex
= stream_getl(s
);
2183 slave
= if_lookup_by_index(ifindex
, vrf_id
);
2185 if (!master
|| !slave
)
2188 kernel_interface_set_master(master
, slave
);
2193 /* Handler of zebra service request. */
2194 static int zebra_client_read(struct thread
*thread
)
2197 struct zserv
*client
;
2199 uint16_t length
, command
;
2200 uint8_t marker
, version
;
2202 struct zebra_vrf
*zvrf
;
2204 /* Get thread data. Reset reading thread because I'm running. */
2205 sock
= THREAD_FD(thread
);
2206 client
= THREAD_ARG(thread
);
2207 client
->t_read
= NULL
;
2209 if (client
->t_suicide
) {
2210 zebra_client_close(client
);
2214 /* Read length and command (if we don't have it already). */
2215 if ((already
= stream_get_endp(client
->ibuf
)) < ZEBRA_HEADER_SIZE
) {
2217 if (((nbyte
= stream_read_try(client
->ibuf
, sock
,
2218 ZEBRA_HEADER_SIZE
- already
))
2221 if (IS_ZEBRA_DEBUG_EVENT
)
2222 zlog_debug("connection closed socket [%d]",
2224 zebra_client_close(client
);
2227 if (nbyte
!= (ssize_t
)(ZEBRA_HEADER_SIZE
- already
)) {
2228 /* Try again later. */
2229 zebra_event(ZEBRA_READ
, sock
, client
);
2232 already
= ZEBRA_HEADER_SIZE
;
2235 /* Reset to read from the beginning of the incoming packet. */
2236 stream_set_getp(client
->ibuf
, 0);
2238 /* Fetch header values */
2239 length
= stream_getw(client
->ibuf
);
2240 marker
= stream_getc(client
->ibuf
);
2241 version
= stream_getc(client
->ibuf
);
2242 vrf_id
= stream_getw(client
->ibuf
);
2243 command
= stream_getw(client
->ibuf
);
2245 if (marker
!= ZEBRA_HEADER_MARKER
|| version
!= ZSERV_VERSION
) {
2247 "%s: socket %d version mismatch, marker %d, version %d",
2248 __func__
, sock
, marker
, version
);
2249 zebra_client_close(client
);
2252 if (length
< ZEBRA_HEADER_SIZE
) {
2254 "%s: socket %d message length %u is less than header size %d",
2255 __func__
, sock
, length
, ZEBRA_HEADER_SIZE
);
2256 zebra_client_close(client
);
2259 if (length
> STREAM_SIZE(client
->ibuf
)) {
2261 "%s: socket %d message length %u exceeds buffer size %lu",
2262 __func__
, sock
, length
,
2263 (u_long
)STREAM_SIZE(client
->ibuf
));
2264 zebra_client_close(client
);
2268 /* Read rest of data. */
2269 if (already
< length
) {
2271 if (((nbyte
= stream_read_try(client
->ibuf
, sock
,
2275 if (IS_ZEBRA_DEBUG_EVENT
)
2277 "connection closed [%d] when reading zebra data",
2279 zebra_client_close(client
);
2282 if (nbyte
!= (ssize_t
)(length
- already
)) {
2283 /* Try again later. */
2284 zebra_event(ZEBRA_READ
, sock
, client
);
2289 length
-= ZEBRA_HEADER_SIZE
;
2291 /* Debug packet information. */
2292 if (IS_ZEBRA_DEBUG_EVENT
)
2293 zlog_debug("zebra message comes from socket [%d]", sock
);
2295 if (IS_ZEBRA_DEBUG_PACKET
&& IS_ZEBRA_DEBUG_RECV
)
2296 zlog_debug("zebra message received [%s] %d in VRF %u",
2297 zserv_command_string(command
), length
, vrf_id
);
2299 client
->last_read_time
= monotime(NULL
);
2300 client
->last_read_cmd
= command
;
2302 zvrf
= zebra_vrf_lookup_by_id(vrf_id
);
2304 if (IS_ZEBRA_DEBUG_PACKET
&& IS_ZEBRA_DEBUG_RECV
)
2305 zlog_debug("zebra received unknown VRF[%u]", vrf_id
);
2306 goto zclient_read_out
;
2310 case ZEBRA_ROUTER_ID_ADD
:
2311 zread_router_id_add(client
, length
, zvrf
);
2313 case ZEBRA_ROUTER_ID_DELETE
:
2314 zread_router_id_delete(client
, length
, zvrf
);
2316 case ZEBRA_INTERFACE_ADD
:
2317 zread_interface_add(client
, length
, zvrf
);
2319 case ZEBRA_INTERFACE_DELETE
:
2320 zread_interface_delete(client
, length
, zvrf
);
2322 case ZEBRA_IPV4_ROUTE_ADD
:
2323 zread_ipv4_add(client
, length
, zvrf
);
2325 case ZEBRA_IPV4_ROUTE_DELETE
:
2326 zread_ipv4_delete(client
, length
, zvrf
);
2328 case ZEBRA_IPV4_ROUTE_IPV6_NEXTHOP_ADD
:
2329 zread_ipv4_route_ipv6_nexthop_add(client
, length
, zvrf
);
2331 case ZEBRA_IPV4_NEXTHOP_ADD
:
2332 zread_ipv4_add(client
, length
,
2333 zvrf
); /* LB: r1.0 merge - id was 1 */
2335 case ZEBRA_IPV4_NEXTHOP_DELETE
:
2336 zread_ipv4_delete(client
, length
,
2337 zvrf
); /* LB: r1.0 merge - id was 1 */
2339 case ZEBRA_IPV6_ROUTE_ADD
:
2340 zread_ipv6_add(client
, length
, zvrf
);
2342 case ZEBRA_IPV6_ROUTE_DELETE
:
2343 zread_ipv6_delete(client
, length
, zvrf
);
2345 case ZEBRA_REDISTRIBUTE_ADD
:
2346 zebra_redistribute_add(command
, client
, length
, zvrf
);
2348 case ZEBRA_REDISTRIBUTE_DELETE
:
2349 zebra_redistribute_delete(command
, client
, length
, zvrf
);
2351 case ZEBRA_REDISTRIBUTE_DEFAULT_ADD
:
2352 zebra_redistribute_default_add(command
, client
, length
, zvrf
);
2354 case ZEBRA_REDISTRIBUTE_DEFAULT_DELETE
:
2355 zebra_redistribute_default_delete(command
, client
, length
,
2358 case ZEBRA_IPV4_NEXTHOP_LOOKUP_MRIB
:
2359 zread_ipv4_nexthop_lookup_mrib(client
, length
, zvrf
);
2362 zread_hello(client
);
2364 case ZEBRA_NEXTHOP_REGISTER
:
2365 zserv_rnh_register(client
, sock
, length
, RNH_NEXTHOP_TYPE
,
2368 case ZEBRA_NEXTHOP_UNREGISTER
:
2369 zserv_rnh_unregister(client
, sock
, length
, RNH_NEXTHOP_TYPE
,
2372 case ZEBRA_IMPORT_ROUTE_REGISTER
:
2373 zserv_rnh_register(client
, sock
, length
, RNH_IMPORT_CHECK_TYPE
,
2376 case ZEBRA_IMPORT_ROUTE_UNREGISTER
:
2377 zserv_rnh_unregister(client
, sock
, length
,
2378 RNH_IMPORT_CHECK_TYPE
, zvrf
);
2380 case ZEBRA_BFD_DEST_UPDATE
:
2381 case ZEBRA_BFD_DEST_REGISTER
:
2382 zebra_ptm_bfd_dst_register(client
, sock
, length
, command
, zvrf
);
2384 case ZEBRA_BFD_DEST_DEREGISTER
:
2385 zebra_ptm_bfd_dst_deregister(client
, sock
, length
, zvrf
);
2387 case ZEBRA_VRF_UNREGISTER
:
2388 zread_vrf_unregister(client
, length
, zvrf
);
2390 case ZEBRA_BFD_CLIENT_REGISTER
:
2391 zebra_ptm_bfd_client_register(client
, sock
, length
);
2393 case ZEBRA_INTERFACE_ENABLE_RADV
:
2394 #if defined(HAVE_RTADV)
2395 zebra_interface_radv_set(client
, sock
, length
, zvrf
, 1);
2398 case ZEBRA_INTERFACE_DISABLE_RADV
:
2399 #if defined(HAVE_RTADV)
2400 zebra_interface_radv_set(client
, sock
, length
, zvrf
, 0);
2403 case ZEBRA_MPLS_LABELS_ADD
:
2404 case ZEBRA_MPLS_LABELS_DELETE
:
2405 zread_mpls_labels(command
, client
, length
, vrf_id
);
2407 case ZEBRA_IPMR_ROUTE_STATS
:
2408 zebra_ipmr_route_stats(client
, sock
, length
, zvrf
);
2410 case ZEBRA_LABEL_MANAGER_CONNECT
:
2411 case ZEBRA_GET_LABEL_CHUNK
:
2412 case ZEBRA_RELEASE_LABEL_CHUNK
:
2413 zread_label_manager_request(command
, client
, vrf_id
);
2415 case ZEBRA_FEC_REGISTER
:
2416 zserv_fec_register(client
, sock
, length
);
2418 case ZEBRA_FEC_UNREGISTER
:
2419 zserv_fec_unregister(client
, sock
, length
);
2421 case ZEBRA_ADVERTISE_ALL_VNI
:
2422 zebra_vxlan_advertise_all_vni(client
, sock
, length
, zvrf
);
2424 case ZEBRA_REMOTE_VTEP_ADD
:
2425 zebra_vxlan_remote_vtep_add(client
, sock
, length
, zvrf
);
2427 case ZEBRA_REMOTE_VTEP_DEL
:
2428 zebra_vxlan_remote_vtep_del(client
, sock
, length
, zvrf
);
2430 case ZEBRA_REMOTE_MACIP_ADD
:
2431 zebra_vxlan_remote_macip_add(client
, sock
, length
, zvrf
);
2433 case ZEBRA_REMOTE_MACIP_DEL
:
2434 zebra_vxlan_remote_macip_del(client
, sock
, length
, zvrf
);
2435 case ZEBRA_INTERFACE_SET_MASTER
:
2436 zread_interface_set_master(client
, sock
, length
);
2439 zlog_info("Zebra received unknown command %d", command
);
2443 if (client
->t_suicide
) {
2444 /* No need to wait for thread callback, just kill immediately.
2446 zebra_client_close(client
);
2451 stream_reset(client
->ibuf
);
2452 zebra_event(ZEBRA_READ
, sock
, client
);
2457 /* Accept code of zebra server socket. */
2458 static int zebra_accept(struct thread
*thread
)
2462 struct sockaddr_in client
;
2465 accept_sock
= THREAD_FD(thread
);
2467 /* Reregister myself. */
2468 zebra_event(ZEBRA_SERV
, accept_sock
, NULL
);
2470 len
= sizeof(struct sockaddr_in
);
2471 client_sock
= accept(accept_sock
, (struct sockaddr
*)&client
, &len
);
2473 if (client_sock
< 0) {
2474 zlog_warn("Can't accept zebra socket: %s",
2475 safe_strerror(errno
));
2479 /* Make client socket non-blocking. */
2480 set_nonblocking(client_sock
);
2482 /* Create new zebra client. */
2483 zebra_client_create(client_sock
);
2488 #ifdef HAVE_TCP_ZEBRA
2489 /* Make zebra's server socket. */
2490 static void zebra_serv()
2494 struct sockaddr_in addr
;
2496 accept_sock
= socket(AF_INET
, SOCK_STREAM
, 0);
2498 if (accept_sock
< 0) {
2499 zlog_warn("Can't create zserv stream socket: %s",
2500 safe_strerror(errno
));
2502 "zebra can't provice full functionality due to above error");
2506 memset(&addr
, 0, sizeof(struct sockaddr_in
));
2507 addr
.sin_family
= AF_INET
;
2508 addr
.sin_port
= htons(ZEBRA_PORT
);
2509 #ifdef HAVE_STRUCT_SOCKADDR_IN_SIN_LEN
2510 addr
.sin_len
= sizeof(struct sockaddr_in
);
2511 #endif /* HAVE_STRUCT_SOCKADDR_IN_SIN_LEN */
2512 addr
.sin_addr
.s_addr
= htonl(INADDR_LOOPBACK
);
2514 sockopt_reuseaddr(accept_sock
);
2515 sockopt_reuseport(accept_sock
);
2517 if (zserv_privs
.change(ZPRIVS_RAISE
))
2518 zlog_err("Can't raise privileges");
2520 ret
= bind(accept_sock
, (struct sockaddr
*)&addr
,
2521 sizeof(struct sockaddr_in
));
2523 zlog_warn("Can't bind to stream socket: %s",
2524 safe_strerror(errno
));
2526 "zebra can't provice full functionality due to above error");
2527 close(accept_sock
); /* Avoid sd leak. */
2531 if (zserv_privs
.change(ZPRIVS_LOWER
))
2532 zlog_err("Can't lower privileges");
2534 ret
= listen(accept_sock
, 1);
2536 zlog_warn("Can't listen to stream socket: %s",
2537 safe_strerror(errno
));
2539 "zebra can't provice full functionality due to above error");
2540 close(accept_sock
); /* Avoid sd leak. */
2544 zebra_event(ZEBRA_SERV
, accept_sock
, NULL
);
2546 #else /* HAVE_TCP_ZEBRA */
2548 /* For sockaddr_un. */
2551 /* zebra server UNIX domain socket. */
2552 static void zebra_serv_un(const char *path
)
2556 struct sockaddr_un serv
;
2559 /* First of all, unlink existing socket */
2563 old_mask
= umask(0077);
2565 /* Make UNIX domain socket. */
2566 sock
= socket(AF_UNIX
, SOCK_STREAM
, 0);
2568 zlog_warn("Can't create zserv unix socket: %s",
2569 safe_strerror(errno
));
2571 "zebra can't provide full functionality due to above error");
2575 /* Make server socket. */
2576 memset(&serv
, 0, sizeof(struct sockaddr_un
));
2577 serv
.sun_family
= AF_UNIX
;
2578 strncpy(serv
.sun_path
, path
, strlen(path
));
2579 #ifdef HAVE_STRUCT_SOCKADDR_UN_SUN_LEN
2580 len
= serv
.sun_len
= SUN_LEN(&serv
);
2582 len
= sizeof(serv
.sun_family
) + strlen(serv
.sun_path
);
2583 #endif /* HAVE_STRUCT_SOCKADDR_UN_SUN_LEN */
2585 ret
= bind(sock
, (struct sockaddr
*)&serv
, len
);
2587 zlog_warn("Can't bind to unix socket %s: %s", path
,
2588 safe_strerror(errno
));
2590 "zebra can't provide full functionality due to above error");
2595 ret
= listen(sock
, 5);
2597 zlog_warn("Can't listen to unix socket %s: %s", path
,
2598 safe_strerror(errno
));
2600 "zebra can't provide full functionality due to above error");
2607 zebra_event(ZEBRA_SERV
, sock
, NULL
);
2609 #endif /* HAVE_TCP_ZEBRA */
2612 static void zebra_event(enum event event
, int sock
, struct zserv
*client
)
2616 thread_add_read(zebrad
.master
, zebra_accept
, client
, sock
,
2620 client
->t_read
= NULL
;
2621 thread_add_read(zebrad
.master
, zebra_client_read
, client
, sock
,
2630 #define ZEBRA_TIME_BUF 32
2631 static char *zserv_time_buf(time_t *time1
, char *buf
, int buflen
)
2636 assert(buf
!= NULL
);
2637 assert(buflen
>= ZEBRA_TIME_BUF
);
2638 assert(time1
!= NULL
);
2641 snprintf(buf
, buflen
, "never ");
2645 now
= monotime(NULL
);
2649 /* Making formatted timer strings. */
2650 #define ONE_DAY_SECOND 60*60*24
2651 #define ONE_WEEK_SECOND 60*60*24*7
2653 if (now
< ONE_DAY_SECOND
)
2654 snprintf(buf
, buflen
, "%02d:%02d:%02d", tm
->tm_hour
, tm
->tm_min
,
2656 else if (now
< ONE_WEEK_SECOND
)
2657 snprintf(buf
, buflen
, "%dd%02dh%02dm", tm
->tm_yday
, tm
->tm_hour
,
2660 snprintf(buf
, buflen
, "%02dw%dd%02dh", tm
->tm_yday
/ 7,
2661 tm
->tm_yday
- ((tm
->tm_yday
/ 7) * 7), tm
->tm_hour
);
2665 static void zebra_show_client_detail(struct vty
*vty
, struct zserv
*client
)
2667 char cbuf
[ZEBRA_TIME_BUF
], rbuf
[ZEBRA_TIME_BUF
];
2668 char wbuf
[ZEBRA_TIME_BUF
], nhbuf
[ZEBRA_TIME_BUF
], mbuf
[ZEBRA_TIME_BUF
];
2670 vty_out(vty
, "Client: %s", zebra_route_string(client
->proto
));
2671 if (client
->instance
)
2672 vty_out(vty
, " Instance: %d", client
->instance
);
2675 vty_out(vty
, "------------------------ \n");
2676 vty_out(vty
, "FD: %d \n", client
->sock
);
2677 vty_out(vty
, "Route Table ID: %d \n", client
->rtm_table
);
2679 vty_out(vty
, "Connect Time: %s \n",
2680 zserv_time_buf(&client
->connect_time
, cbuf
, ZEBRA_TIME_BUF
));
2681 if (client
->nh_reg_time
) {
2682 vty_out(vty
, "Nexthop Registry Time: %s \n",
2683 zserv_time_buf(&client
->nh_reg_time
, nhbuf
,
2685 if (client
->nh_last_upd_time
)
2686 vty_out(vty
, "Nexthop Last Update Time: %s \n",
2687 zserv_time_buf(&client
->nh_last_upd_time
, mbuf
,
2690 vty_out(vty
, "No Nexthop Update sent\n");
2692 vty_out(vty
, "Not registered for Nexthop Updates\n");
2694 vty_out(vty
, "Last Msg Rx Time: %s \n",
2695 zserv_time_buf(&client
->last_read_time
, rbuf
, ZEBRA_TIME_BUF
));
2696 vty_out(vty
, "Last Msg Tx Time: %s \n",
2697 zserv_time_buf(&client
->last_write_time
, wbuf
, ZEBRA_TIME_BUF
));
2698 if (client
->last_read_time
)
2699 vty_out(vty
, "Last Rcvd Cmd: %s \n",
2700 zserv_command_string(client
->last_read_cmd
));
2701 if (client
->last_write_time
)
2702 vty_out(vty
, "Last Sent Cmd: %s \n",
2703 zserv_command_string(client
->last_write_cmd
));
2706 vty_out(vty
, "Type Add Update Del \n");
2707 vty_out(vty
, "================================================== \n");
2708 vty_out(vty
, "IPv4 %-12d%-12d%-12d\n", client
->v4_route_add_cnt
,
2709 client
->v4_route_upd8_cnt
, client
->v4_route_del_cnt
);
2710 vty_out(vty
, "IPv6 %-12d%-12d%-12d\n", client
->v6_route_add_cnt
,
2711 client
->v6_route_upd8_cnt
, client
->v6_route_del_cnt
);
2712 vty_out(vty
, "Redist:v4 %-12d%-12d%-12d\n", client
->redist_v4_add_cnt
,
2713 0, client
->redist_v4_del_cnt
);
2714 vty_out(vty
, "Redist:v6 %-12d%-12d%-12d\n", client
->redist_v6_add_cnt
,
2715 0, client
->redist_v6_del_cnt
);
2716 vty_out(vty
, "Connected %-12d%-12d%-12d\n", client
->ifadd_cnt
, 0,
2718 vty_out(vty
, "BFD peer %-12d%-12d%-12d\n", client
->bfd_peer_add_cnt
,
2719 client
->bfd_peer_upd8_cnt
, client
->bfd_peer_del_cnt
);
2720 vty_out(vty
, "Interface Up Notifications: %d\n", client
->ifup_cnt
);
2721 vty_out(vty
, "Interface Down Notifications: %d\n", client
->ifdown_cnt
);
2722 vty_out(vty
, "VNI add notifications: %d\n", client
->vniadd_cnt
);
2723 vty_out(vty
, "VNI delete notifications: %d\n", client
->vnidel_cnt
);
2724 vty_out(vty
, "MAC-IP add notifications: %d\n", client
->macipadd_cnt
);
2725 vty_out(vty
, "MAC-IP delete notifications: %d\n", client
->macipdel_cnt
);
2731 static void zebra_show_client_brief(struct vty
*vty
, struct zserv
*client
)
2733 char cbuf
[ZEBRA_TIME_BUF
], rbuf
[ZEBRA_TIME_BUF
];
2734 char wbuf
[ZEBRA_TIME_BUF
];
2736 vty_out(vty
, "%-8s%12s %12s%12s%8d/%-8d%8d/%-8d\n",
2737 zebra_route_string(client
->proto
),
2738 zserv_time_buf(&client
->connect_time
, cbuf
, ZEBRA_TIME_BUF
),
2739 zserv_time_buf(&client
->last_read_time
, rbuf
, ZEBRA_TIME_BUF
),
2740 zserv_time_buf(&client
->last_write_time
, wbuf
, ZEBRA_TIME_BUF
),
2741 client
->v4_route_add_cnt
+ client
->v4_route_upd8_cnt
,
2742 client
->v4_route_del_cnt
,
2743 client
->v6_route_add_cnt
+ client
->v6_route_upd8_cnt
,
2744 client
->v6_route_del_cnt
);
2747 struct zserv
*zebra_find_client(u_char proto
)
2749 struct listnode
*node
, *nnode
;
2750 struct zserv
*client
;
2752 for (ALL_LIST_ELEMENTS(zebrad
.client_list
, node
, nnode
, client
)) {
2753 if (client
->proto
== proto
)
2761 /* Display default rtm_table for all clients. */
2766 "default routing table to use for all clients\n")
2768 vty_out(vty
, "table %d\n", zebrad
.rtm_table_default
);
2772 DEFUN (config_table
,
2775 "Configure target kernel routing table\n"
2778 zebrad
.rtm_table_default
= strtol(argv
[1]->arg
, (char **)0, 10);
2782 DEFUN (no_config_table
,
2783 no_config_table_cmd
,
2784 "no table [TABLENO]",
2786 "Configure target kernel routing table\n"
2789 zebrad
.rtm_table_default
= 0;
2794 DEFUN (ip_forwarding
,
2798 "Turn on IP forwarding")
2804 ret
= ipforward_on();
2807 vty_out(vty
, "Can't turn on IP forwarding\n");
2808 return CMD_WARNING_CONFIG_FAILED
;
2814 DEFUN (no_ip_forwarding
,
2815 no_ip_forwarding_cmd
,
2819 "Turn off IP forwarding")
2825 ret
= ipforward_off();
2828 vty_out(vty
, "Can't turn off IP forwarding\n");
2829 return CMD_WARNING_CONFIG_FAILED
;
2839 "Zebra information\n")
2844 " Route Route Neighbor LSP LSP\n");
2846 "VRF Installs Removals Updates Installs Removals\n");
2847 RB_FOREACH(vrf
, vrf_name_head
, &vrfs_by_name
)
2849 struct zebra_vrf
*zvrf
= vrf
->info
;
2850 vty_out(vty
, "%-25s %10" PRIu64
" %10" PRIu64
" %10" PRIu64
2851 " %10" PRIu64
" %10" PRIu64
"\n",
2852 vrf
->name
, zvrf
->installs
, zvrf
->removals
,
2853 zvrf
->neigh_updates
, zvrf
->lsp_installs
,
2854 zvrf
->lsp_removals
);
2860 /* This command is for debugging purpose. */
2861 DEFUN (show_zebra_client
,
2862 show_zebra_client_cmd
,
2863 "show zebra client",
2865 "Zebra information\n"
2866 "Client information\n")
2868 struct listnode
*node
;
2869 struct zserv
*client
;
2871 for (ALL_LIST_ELEMENTS_RO(zebrad
.client_list
, node
, client
))
2872 zebra_show_client_detail(vty
, client
);
2877 /* This command is for debugging purpose. */
2878 DEFUN (show_zebra_client_summary
,
2879 show_zebra_client_summary_cmd
,
2880 "show zebra client summary",
2882 "Zebra information brief\n"
2883 "Client information brief\n"
2886 struct listnode
*node
;
2887 struct zserv
*client
;
2890 "Name Connect Time Last Read Last Write IPv4 Routes IPv6 Routes \n");
2892 "--------------------------------------------------------------------------------\n");
2894 for (ALL_LIST_ELEMENTS_RO(zebrad
.client_list
, node
, client
))
2895 zebra_show_client_brief(vty
, client
);
2897 vty_out(vty
, "Routes column shows (added+updated)/deleted\n");
2901 /* Table configuration write function. */
2902 static int config_write_table(struct vty
*vty
)
2904 if (zebrad
.rtm_table_default
)
2905 vty_out(vty
, "table %d\n", zebrad
.rtm_table_default
);
2909 /* table node for routing tables. */
2910 static struct cmd_node table_node
= {TABLE_NODE
,
2911 "", /* This node has no interface. */
2914 /* Only display ip forwarding is enabled or not. */
2915 DEFUN (show_ip_forwarding
,
2916 show_ip_forwarding_cmd
,
2917 "show ip forwarding",
2920 "IP forwarding status\n")
2927 vty_out(vty
, "IP forwarding is off\n");
2929 vty_out(vty
, "IP forwarding is on\n");
2933 /* Only display ipv6 forwarding is enabled or not. */
2934 DEFUN (show_ipv6_forwarding
,
2935 show_ipv6_forwarding_cmd
,
2936 "show ipv6 forwarding",
2938 "IPv6 information\n"
2939 "Forwarding status\n")
2943 ret
= ipforward_ipv6();
2947 vty_out(vty
, "ipv6 forwarding is unknown\n");
2950 vty_out(vty
, "ipv6 forwarding is %s\n", "off");
2953 vty_out(vty
, "ipv6 forwarding is %s\n", "on");
2956 vty_out(vty
, "ipv6 forwarding is %s\n", "off");
2962 DEFUN (ipv6_forwarding
,
2963 ipv6_forwarding_cmd
,
2966 "Turn on IPv6 forwarding")
2970 ret
= ipforward_ipv6();
2972 ret
= ipforward_ipv6_on();
2975 vty_out(vty
, "Can't turn on IPv6 forwarding\n");
2976 return CMD_WARNING_CONFIG_FAILED
;
2982 DEFUN (no_ipv6_forwarding
,
2983 no_ipv6_forwarding_cmd
,
2984 "no ipv6 forwarding",
2987 "Turn off IPv6 forwarding")
2991 ret
= ipforward_ipv6();
2993 ret
= ipforward_ipv6_off();
2996 vty_out(vty
, "Can't turn off IPv6 forwarding\n");
2997 return CMD_WARNING_CONFIG_FAILED
;
3003 /* IPForwarding configuration write function. */
3004 static int config_write_forwarding(struct vty
*vty
)
3006 /* FIXME: Find better place for that. */
3007 router_id_write(vty
);
3010 vty_out(vty
, "no ip forwarding\n");
3011 if (!ipforward_ipv6())
3012 vty_out(vty
, "no ipv6 forwarding\n");
3013 vty_out(vty
, "!\n");
3017 /* table node for routing tables. */
3018 static struct cmd_node forwarding_node
= {FORWARDING_NODE
,
3019 "", /* This node has no interface. */
3022 /* Initialisation of zebra and installation of commands. */
3023 void zebra_init(void)
3025 /* Client list init. */
3026 zebrad
.client_list
= list_new();
3028 /* Install configuration write function. */
3029 install_node(&table_node
, config_write_table
);
3030 install_node(&forwarding_node
, config_write_forwarding
);
3032 install_element(VIEW_NODE
, &show_ip_forwarding_cmd
);
3033 install_element(CONFIG_NODE
, &ip_forwarding_cmd
);
3034 install_element(CONFIG_NODE
, &no_ip_forwarding_cmd
);
3035 install_element(ENABLE_NODE
, &show_zebra_cmd
);
3036 install_element(ENABLE_NODE
, &show_zebra_client_cmd
);
3037 install_element(ENABLE_NODE
, &show_zebra_client_summary_cmd
);
3040 install_element(VIEW_NODE
, &show_table_cmd
);
3041 install_element(CONFIG_NODE
, &config_table_cmd
);
3042 install_element(CONFIG_NODE
, &no_config_table_cmd
);
3043 #endif /* HAVE_NETLINK */
3045 install_element(VIEW_NODE
, &show_ipv6_forwarding_cmd
);
3046 install_element(CONFIG_NODE
, &ipv6_forwarding_cmd
);
3047 install_element(CONFIG_NODE
, &no_ipv6_forwarding_cmd
);
3050 zebra_route_map_init();
3053 /* Make zebra server socket, wiping any existing one (see bug #403). */
3054 void zebra_zserv_socket_init(char *path
)
3056 #ifdef HAVE_TCP_ZEBRA
3059 zebra_serv_un(path
? path
: ZEBRA_SERV_PATH
);
3060 #endif /* HAVE_TCP_ZEBRA */