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
28 #include "sockunion.h"
40 #include "bgpd/bgpd.h"
41 #include "bgpd/bgp_route.h"
42 #include "bgpd/bgp_attr.h"
43 #include "bgpd/bgp_nexthop.h"
44 #include "bgpd/bgp_zebra.h"
45 #include "bgpd/bgp_fsm.h"
46 #include "bgpd/bgp_debug.h"
47 #include "bgpd/bgp_errors.h"
48 #include "bgpd/bgp_mpath.h"
49 #include "bgpd/bgp_nexthop.h"
50 #include "bgpd/bgp_nht.h"
51 #include "bgpd/bgp_bfd.h"
52 #include "bgpd/bgp_label.h"
54 #include "bgpd/rfapi/rfapi_backend.h"
55 #include "bgpd/rfapi/vnc_export_bgp.h"
57 #include "bgpd/bgp_evpn.h"
58 #include "bgpd/bgp_mplsvpn.h"
59 #include "bgpd/bgp_labelpool.h"
60 #include "bgpd/bgp_pbr.h"
62 /* All information about zebra. */
63 struct zclient
*zclient
= NULL
;
65 /* Can we install into zebra? */
66 static inline int bgp_install_info_to_zebra(struct bgp
*bgp
)
68 if (zclient
->sock
<= 0)
71 if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp
))
77 int zclient_num_connects
;
79 /* Router-id update message from zebra. */
80 static int bgp_router_id_update(int command
, struct zclient
*zclient
,
81 zebra_size_t length
, vrf_id_t vrf_id
)
83 struct prefix router_id
;
85 zebra_router_id_update_read(zclient
->ibuf
, &router_id
);
87 if (BGP_DEBUG(zebra
, ZEBRA
)) {
88 char buf
[PREFIX2STR_BUFFER
];
89 prefix2str(&router_id
, buf
, sizeof(buf
));
90 zlog_debug("Rx Router Id update VRF %u Id %s", vrf_id
, buf
);
93 bgp_router_id_zebra_bump(vrf_id
, &router_id
);
97 /* Nexthop update message from zebra. */
98 static int bgp_read_nexthop_update(int command
, struct zclient
*zclient
,
99 zebra_size_t length
, vrf_id_t vrf_id
)
101 bgp_parse_nexthop_update(command
, vrf_id
);
105 static int bgp_read_import_check_update(int command
, struct zclient
*zclient
,
106 zebra_size_t length
, vrf_id_t vrf_id
)
108 bgp_parse_nexthop_update(command
, vrf_id
);
112 /* Set or clear interface on which unnumbered neighbor is configured. This
113 * would in turn cause BGP to initiate or turn off IPv6 RAs on this
116 static void bgp_update_interface_nbrs(struct bgp
*bgp
, struct interface
*ifp
,
117 struct interface
*upd_ifp
)
119 struct listnode
*node
, *nnode
;
122 for (ALL_LIST_ELEMENTS(bgp
->peer
, node
, nnode
, peer
)) {
123 if (peer
->conf_if
&& (strcmp(peer
->conf_if
, ifp
->name
) == 0)) {
126 bgp_zebra_initiate_radv(bgp
, peer
);
128 bgp_zebra_terminate_radv(bgp
, peer
);
135 static int bgp_read_fec_update(int command
, struct zclient
*zclient
,
138 bgp_parse_fec_update();
142 static void bgp_start_interface_nbrs(struct bgp
*bgp
, struct interface
*ifp
)
144 struct listnode
*node
, *nnode
;
147 for (ALL_LIST_ELEMENTS(bgp
->peer
, node
, nnode
, peer
)) {
148 if (peer
->conf_if
&& (strcmp(peer
->conf_if
, ifp
->name
) == 0)
149 && peer
->status
!= Established
) {
150 if (peer_active(peer
))
151 BGP_EVENT_ADD(peer
, BGP_Stop
);
152 BGP_EVENT_ADD(peer
, BGP_Start
);
157 static void bgp_nbr_connected_add(struct bgp
*bgp
, struct nbr_connected
*ifc
)
159 struct listnode
*node
;
160 struct connected
*connected
;
161 struct interface
*ifp
;
164 /* Kick-off the FSM for any relevant peers only if there is a
165 * valid local address on the interface.
168 for (ALL_LIST_ELEMENTS_RO(ifp
->connected
, node
, connected
)) {
169 p
= connected
->address
;
170 if (p
->family
== AF_INET6
171 && IN6_IS_ADDR_LINKLOCAL(&p
->u
.prefix6
))
177 bgp_start_interface_nbrs(bgp
, ifp
);
180 static void bgp_nbr_connected_delete(struct bgp
*bgp
, struct nbr_connected
*ifc
,
183 struct listnode
*node
, *nnode
;
185 struct interface
*ifp
;
187 for (ALL_LIST_ELEMENTS(bgp
->peer
, node
, nnode
, peer
)) {
189 && (strcmp(peer
->conf_if
, ifc
->ifp
->name
) == 0)) {
190 peer
->last_reset
= PEER_DOWN_NBR_ADDR_DEL
;
191 BGP_EVENT_ADD(peer
, BGP_Stop
);
194 /* Free neighbor also, if we're asked to. */
197 listnode_delete(ifp
->nbr_connected
, ifc
);
198 nbr_connected_free(ifc
);
202 /* Inteface addition message from zebra. */
203 static int bgp_interface_add(int command
, struct zclient
*zclient
,
204 zebra_size_t length
, vrf_id_t vrf_id
)
206 struct interface
*ifp
;
209 ifp
= zebra_interface_add_read(zclient
->ibuf
, vrf_id
);
210 if (!ifp
) // unexpected
213 if (BGP_DEBUG(zebra
, ZEBRA
) && ifp
)
214 zlog_debug("Rx Intf add VRF %u IF %s", vrf_id
, ifp
->name
);
216 bgp
= bgp_lookup_by_vrf_id(vrf_id
);
220 bgp_update_interface_nbrs(bgp
, ifp
, ifp
);
224 static int bgp_interface_delete(int command
, struct zclient
*zclient
,
225 zebra_size_t length
, vrf_id_t vrf_id
)
228 struct interface
*ifp
;
231 bgp
= bgp_lookup_by_vrf_id(vrf_id
);
236 ifp
= zebra_interface_state_read(s
, vrf_id
);
237 if (!ifp
) /* This may happen if we've just unregistered for a VRF. */
240 if (BGP_DEBUG(zebra
, ZEBRA
))
241 zlog_debug("Rx Intf del VRF %u IF %s", vrf_id
, ifp
->name
);
243 bgp_update_interface_nbrs(bgp
, ifp
, NULL
);
245 if_set_index(ifp
, IFINDEX_INTERNAL
);
249 static int bgp_interface_up(int command
, struct zclient
*zclient
,
250 zebra_size_t length
, vrf_id_t vrf_id
)
253 struct interface
*ifp
;
255 struct nbr_connected
*nc
;
256 struct listnode
*node
, *nnode
;
259 bgp
= bgp_lookup_by_vrf_id(vrf_id
);
264 ifp
= zebra_interface_state_read(s
, vrf_id
);
269 if (BGP_DEBUG(zebra
, ZEBRA
))
270 zlog_debug("Rx Intf up VRF %u IF %s", vrf_id
, ifp
->name
);
272 for (ALL_LIST_ELEMENTS(ifp
->connected
, node
, nnode
, c
))
273 bgp_connected_add(bgp
, c
);
275 for (ALL_LIST_ELEMENTS(ifp
->nbr_connected
, node
, nnode
, nc
))
276 bgp_nbr_connected_add(bgp
, nc
);
281 static int bgp_interface_down(int command
, struct zclient
*zclient
,
282 zebra_size_t length
, vrf_id_t vrf_id
)
285 struct interface
*ifp
;
287 struct nbr_connected
*nc
;
288 struct listnode
*node
, *nnode
;
292 bgp
= bgp_lookup_by_vrf_id(vrf_id
);
297 ifp
= zebra_interface_state_read(s
, vrf_id
);
301 if (BGP_DEBUG(zebra
, ZEBRA
))
302 zlog_debug("Rx Intf down VRF %u IF %s", vrf_id
, ifp
->name
);
304 for (ALL_LIST_ELEMENTS(ifp
->connected
, node
, nnode
, c
))
305 bgp_connected_delete(bgp
, c
);
307 for (ALL_LIST_ELEMENTS(ifp
->nbr_connected
, node
, nnode
, nc
))
308 bgp_nbr_connected_delete(bgp
, nc
, 1);
310 /* Fast external-failover */
311 if (!CHECK_FLAG(bgp
->flags
, BGP_FLAG_NO_FAST_EXT_FAILOVER
)) {
313 for (ALL_LIST_ELEMENTS(bgp
->peer
, node
, nnode
, peer
)) {
314 #if defined(HAVE_CUMULUS)
315 /* Take down directly connected EBGP peers as well as
317 * tracked (directly connected) IBGP peers.
319 if ((peer
->ttl
!= 1) && (peer
->gtsm_hops
!= 1)
321 || bgp_bfd_is_peer_multihop(peer
)))
323 /* Take down directly connected EBGP peers */
324 if ((peer
->ttl
!= 1) && (peer
->gtsm_hops
!= 1))
328 if (ifp
== peer
->nexthop
.ifp
) {
329 BGP_EVENT_ADD(peer
, BGP_Stop
);
330 peer
->last_reset
= PEER_DOWN_IF_DOWN
;
338 static int bgp_interface_address_add(int command
, struct zclient
*zclient
,
339 zebra_size_t length
, vrf_id_t vrf_id
)
341 struct connected
*ifc
;
344 bgp
= bgp_lookup_by_vrf_id(vrf_id
);
348 ifc
= zebra_interface_address_read(command
, zclient
->ibuf
, vrf_id
);
353 if (bgp_debug_zebra(ifc
->address
)) {
354 char buf
[PREFIX2STR_BUFFER
];
355 prefix2str(ifc
->address
, buf
, sizeof(buf
));
356 zlog_debug("Rx Intf address add VRF %u IF %s addr %s", vrf_id
,
357 ifc
->ifp
->name
, buf
);
360 if (if_is_operative(ifc
->ifp
)) {
361 bgp_connected_add(bgp
, ifc
);
363 /* If we have learnt of any neighbors on this interface,
364 * check to kick off any BGP interface-based neighbors,
365 * but only if this is a link-local address.
367 if (IN6_IS_ADDR_LINKLOCAL(&ifc
->address
->u
.prefix6
)
368 && !list_isempty(ifc
->ifp
->nbr_connected
))
369 bgp_start_interface_nbrs(bgp
, ifc
->ifp
);
375 static int bgp_interface_address_delete(int command
, struct zclient
*zclient
,
376 zebra_size_t length
, vrf_id_t vrf_id
)
378 struct connected
*ifc
;
381 bgp
= bgp_lookup_by_vrf_id(vrf_id
);
385 ifc
= zebra_interface_address_read(command
, zclient
->ibuf
, vrf_id
);
390 if (bgp_debug_zebra(ifc
->address
)) {
391 char buf
[PREFIX2STR_BUFFER
];
392 prefix2str(ifc
->address
, buf
, sizeof(buf
));
393 zlog_debug("Rx Intf address del VRF %u IF %s addr %s", vrf_id
,
394 ifc
->ifp
->name
, buf
);
397 if (if_is_operative(ifc
->ifp
)) {
398 bgp_connected_delete(bgp
, ifc
);
406 static int bgp_interface_nbr_address_add(int command
, struct zclient
*zclient
,
407 zebra_size_t length
, vrf_id_t vrf_id
)
409 struct nbr_connected
*ifc
= NULL
;
412 ifc
= zebra_interface_nbr_address_read(command
, zclient
->ibuf
, vrf_id
);
417 if (bgp_debug_zebra(ifc
->address
)) {
418 char buf
[PREFIX2STR_BUFFER
];
419 prefix2str(ifc
->address
, buf
, sizeof(buf
));
420 zlog_debug("Rx Intf neighbor add VRF %u IF %s addr %s", vrf_id
,
421 ifc
->ifp
->name
, buf
);
424 if (if_is_operative(ifc
->ifp
)) {
425 bgp
= bgp_lookup_by_vrf_id(vrf_id
);
427 bgp_nbr_connected_add(bgp
, ifc
);
433 static int bgp_interface_nbr_address_delete(int command
,
434 struct zclient
*zclient
,
438 struct nbr_connected
*ifc
= NULL
;
441 ifc
= zebra_interface_nbr_address_read(command
, zclient
->ibuf
, vrf_id
);
446 if (bgp_debug_zebra(ifc
->address
)) {
447 char buf
[PREFIX2STR_BUFFER
];
448 prefix2str(ifc
->address
, buf
, sizeof(buf
));
449 zlog_debug("Rx Intf neighbor del VRF %u IF %s addr %s", vrf_id
,
450 ifc
->ifp
->name
, buf
);
453 if (if_is_operative(ifc
->ifp
)) {
454 bgp
= bgp_lookup_by_vrf_id(vrf_id
);
456 bgp_nbr_connected_delete(bgp
, ifc
, 0);
459 nbr_connected_free(ifc
);
464 /* VRF update for an interface. */
465 static int bgp_interface_vrf_update(int command
, struct zclient
*zclient
,
466 zebra_size_t length
, vrf_id_t vrf_id
)
468 struct interface
*ifp
;
471 struct nbr_connected
*nc
;
472 struct listnode
*node
, *nnode
;
476 ifp
= zebra_interface_vrf_update_read(zclient
->ibuf
, vrf_id
,
481 if (BGP_DEBUG(zebra
, ZEBRA
) && ifp
)
482 zlog_debug("Rx Intf VRF change VRF %u IF %s NewVRF %u", vrf_id
,
483 ifp
->name
, new_vrf_id
);
485 bgp
= bgp_lookup_by_vrf_id(vrf_id
);
489 for (ALL_LIST_ELEMENTS(ifp
->connected
, node
, nnode
, c
))
490 bgp_connected_delete(bgp
, c
);
492 for (ALL_LIST_ELEMENTS(ifp
->nbr_connected
, node
, nnode
, nc
))
493 bgp_nbr_connected_delete(bgp
, nc
, 1);
495 /* Fast external-failover */
496 if (!CHECK_FLAG(bgp
->flags
, BGP_FLAG_NO_FAST_EXT_FAILOVER
)) {
497 for (ALL_LIST_ELEMENTS(bgp
->peer
, node
, nnode
, peer
)) {
498 if ((peer
->ttl
!= 1) && (peer
->gtsm_hops
!= 1))
501 if (ifp
== peer
->nexthop
.ifp
)
502 BGP_EVENT_ADD(peer
, BGP_Stop
);
506 if_update_to_new_vrf(ifp
, new_vrf_id
);
508 bgp
= bgp_lookup_by_vrf_id(new_vrf_id
);
512 for (ALL_LIST_ELEMENTS(ifp
->connected
, node
, nnode
, c
))
513 bgp_connected_add(bgp
, c
);
515 for (ALL_LIST_ELEMENTS(ifp
->nbr_connected
, node
, nnode
, nc
))
516 bgp_nbr_connected_add(bgp
, nc
);
520 /* Zebra route add and delete treatment. */
521 static int zebra_read_route(int command
, struct zclient
*zclient
,
522 zebra_size_t length
, vrf_id_t vrf_id
)
524 enum nexthop_types_t nhtype
;
525 struct zapi_route api
;
526 union g_addr nexthop
;
531 bgp
= bgp_lookup_by_vrf_id(vrf_id
);
535 if (zapi_route_decode(zclient
->ibuf
, &api
) < 0)
538 /* we completely ignore srcdest routes for now. */
539 if (CHECK_FLAG(api
.message
, ZAPI_MESSAGE_SRCPFX
))
542 /* ignore link-local address. */
543 if (api
.prefix
.family
== AF_INET6
544 && IN6_IS_ADDR_LINKLOCAL(&api
.prefix
.u
.prefix6
))
547 nexthop
= api
.nexthops
[0].gate
;
548 ifindex
= api
.nexthops
[0].ifindex
;
549 nhtype
= api
.nexthops
[0].type
;
551 add
= (command
== ZEBRA_REDISTRIBUTE_ROUTE_ADD
);
554 * The ADD message is actually an UPDATE and there is no
556 * for a prior redistributed route, if any. So, perform an
558 * DEL processing for the same redistributed route from any
562 for (i
= 0; i
< ZEBRA_ROUTE_MAX
; i
++) {
564 bgp_redistribute_delete(bgp
, &api
.prefix
, i
,
568 /* Now perform the add/update. */
569 bgp_redistribute_add(bgp
, &api
.prefix
, &nexthop
, ifindex
,
570 nhtype
, api
.metric
, api
.type
, api
.instance
,
573 bgp_redistribute_delete(bgp
, &api
.prefix
, api
.type
,
577 if (bgp_debug_zebra(&api
.prefix
)) {
578 char buf
[2][PREFIX_STRLEN
];
580 prefix2str(&api
.prefix
, buf
[0], sizeof(buf
[0]));
582 inet_ntop(api
.prefix
.family
, &nexthop
, buf
[1],
585 "Rx route ADD VRF %u %s[%d] %s nexthop %s (type %d if %u) metric %u tag %" ROUTE_TAG_PRI
,
586 vrf_id
, zebra_route_string(api
.type
),
587 api
.instance
, buf
[0], buf
[1], nhtype
,
588 ifindex
, api
.metric
, api
.tag
);
591 "Rx route DEL VRF %u %s[%d] %s",
592 vrf_id
, zebra_route_string(api
.type
),
593 api
.instance
, buf
[0]);
600 struct interface
*if_lookup_by_ipv4(struct in_addr
*addr
, vrf_id_t vrf_id
)
603 struct listnode
*cnode
;
604 struct interface
*ifp
;
605 struct connected
*connected
;
606 struct prefix_ipv4 p
;
609 vrf
= vrf_lookup_by_id(vrf_id
);
615 p
.prefixlen
= IPV4_MAX_BITLEN
;
617 FOR_ALL_INTERFACES (vrf
, ifp
) {
618 for (ALL_LIST_ELEMENTS_RO(ifp
->connected
, cnode
, connected
)) {
619 cp
= connected
->address
;
621 if (cp
->family
== AF_INET
)
622 if (prefix_match(cp
, (struct prefix
*)&p
))
629 struct interface
*if_lookup_by_ipv4_exact(struct in_addr
*addr
, vrf_id_t vrf_id
)
632 struct listnode
*cnode
;
633 struct interface
*ifp
;
634 struct connected
*connected
;
637 vrf
= vrf_lookup_by_id(vrf_id
);
641 FOR_ALL_INTERFACES (vrf
, ifp
) {
642 for (ALL_LIST_ELEMENTS_RO(ifp
->connected
, cnode
, connected
)) {
643 cp
= connected
->address
;
645 if (cp
->family
== AF_INET
)
646 if (IPV4_ADDR_SAME(&cp
->u
.prefix4
, addr
))
653 struct interface
*if_lookup_by_ipv6(struct in6_addr
*addr
, ifindex_t ifindex
,
657 struct listnode
*cnode
;
658 struct interface
*ifp
;
659 struct connected
*connected
;
660 struct prefix_ipv6 p
;
663 vrf
= vrf_lookup_by_id(vrf_id
);
669 p
.prefixlen
= IPV6_MAX_BITLEN
;
671 FOR_ALL_INTERFACES (vrf
, ifp
) {
672 for (ALL_LIST_ELEMENTS_RO(ifp
->connected
, cnode
, connected
)) {
673 cp
= connected
->address
;
675 if (cp
->family
== AF_INET6
)
676 if (prefix_match(cp
, (struct prefix
*)&p
)) {
677 if (IN6_IS_ADDR_LINKLOCAL(
679 if (ifindex
== ifp
->ifindex
)
689 struct interface
*if_lookup_by_ipv6_exact(struct in6_addr
*addr
,
690 ifindex_t ifindex
, vrf_id_t vrf_id
)
693 struct listnode
*cnode
;
694 struct interface
*ifp
;
695 struct connected
*connected
;
698 vrf
= vrf_lookup_by_id(vrf_id
);
702 FOR_ALL_INTERFACES (vrf
, ifp
) {
703 for (ALL_LIST_ELEMENTS_RO(ifp
->connected
, cnode
, connected
)) {
704 cp
= connected
->address
;
706 if (cp
->family
== AF_INET6
)
707 if (IPV6_ADDR_SAME(&cp
->u
.prefix6
, addr
)) {
708 if (IN6_IS_ADDR_LINKLOCAL(
710 if (ifindex
== ifp
->ifindex
)
720 static int if_get_ipv6_global(struct interface
*ifp
, struct in6_addr
*addr
)
722 struct listnode
*cnode
;
723 struct connected
*connected
;
726 for (ALL_LIST_ELEMENTS_RO(ifp
->connected
, cnode
, connected
)) {
727 cp
= connected
->address
;
729 if (cp
->family
== AF_INET6
)
730 if (!IN6_IS_ADDR_LINKLOCAL(&cp
->u
.prefix6
)) {
731 memcpy(addr
, &cp
->u
.prefix6
, IPV6_MAX_BYTELEN
);
738 static int if_get_ipv6_local(struct interface
*ifp
, struct in6_addr
*addr
)
740 struct listnode
*cnode
;
741 struct connected
*connected
;
744 for (ALL_LIST_ELEMENTS_RO(ifp
->connected
, cnode
, connected
)) {
745 cp
= connected
->address
;
747 if (cp
->family
== AF_INET6
)
748 if (IN6_IS_ADDR_LINKLOCAL(&cp
->u
.prefix6
)) {
749 memcpy(addr
, &cp
->u
.prefix6
, IPV6_MAX_BYTELEN
);
756 static int if_get_ipv4_address(struct interface
*ifp
, struct in_addr
*addr
)
758 struct listnode
*cnode
;
759 struct connected
*connected
;
762 for (ALL_LIST_ELEMENTS_RO(ifp
->connected
, cnode
, connected
)) {
763 cp
= connected
->address
;
764 if ((cp
->family
== AF_INET
)
765 && !ipv4_martian(&(cp
->u
.prefix4
))) {
766 *addr
= cp
->u
.prefix4
;
774 bool bgp_zebra_nexthop_set(union sockunion
*local
, union sockunion
*remote
,
775 struct bgp_nexthop
*nexthop
, struct peer
*peer
)
778 struct interface
*ifp
= NULL
;
780 memset(nexthop
, 0, sizeof(struct bgp_nexthop
));
787 if (local
->sa
.sa_family
== AF_INET
) {
788 nexthop
->v4
= local
->sin
.sin_addr
;
790 ifp
= if_lookup_by_name(peer
->update_if
,
793 ifp
= if_lookup_by_ipv4_exact(&local
->sin
.sin_addr
,
796 if (local
->sa
.sa_family
== AF_INET6
) {
797 if (IN6_IS_ADDR_LINKLOCAL(&local
->sin6
.sin6_addr
)) {
798 if (peer
->conf_if
|| peer
->ifname
)
799 ifp
= if_lookup_by_name(peer
->conf_if
803 } else if (peer
->update_if
)
804 ifp
= if_lookup_by_name(peer
->update_if
,
807 ifp
= if_lookup_by_ipv6_exact(&local
->sin6
.sin6_addr
,
808 local
->sin6
.sin6_scope_id
,
814 * BGP views do not currently get proper data
815 * from zebra( when attached ) to be able to
816 * properly resolve nexthops, so give this
817 * instance type a pass.
819 if (peer
->bgp
->inst_type
== BGP_INSTANCE_TYPE_VIEW
)
822 * If we have no interface data but we have established
823 * some connection w/ zebra than something has gone
824 * terribly terribly wrong here, so say this failed
825 * If we do not any zebra connection then not
826 * having a ifp pointer is ok.
828 return zclient_num_connects
? false : true;
833 /* IPv4 connection, fetch and store IPv6 local address(es) if any. */
834 if (local
->sa
.sa_family
== AF_INET
) {
836 ret
= if_get_ipv6_global(ifp
, &nexthop
->v6_global
);
839 /* There is no global nexthop. Use link-local address as
841 * global and link-local nexthop. In this scenario, the
843 * for interop is that the network admin would use a
845 * specify the global IPv6 nexthop.
847 if_get_ipv6_local(ifp
, &nexthop
->v6_global
);
848 memcpy(&nexthop
->v6_local
, &nexthop
->v6_global
,
851 if_get_ipv6_local(ifp
, &nexthop
->v6_local
);
853 if (if_lookup_by_ipv4(&remote
->sin
.sin_addr
, peer
->bgp
->vrf_id
))
854 peer
->shared_network
= 1;
856 peer
->shared_network
= 0;
859 /* IPv6 connection, fetch and store IPv4 local address if any. */
860 if (local
->sa
.sa_family
== AF_INET6
) {
861 struct interface
*direct
= NULL
;
864 ret
= if_get_ipv4_address(ifp
, &nexthop
->v4
);
865 if (!ret
&& peer
->local_id
.s_addr
)
866 nexthop
->v4
= peer
->local_id
;
869 if (!IN6_IS_ADDR_LINKLOCAL(&local
->sin6
.sin6_addr
)) {
870 memcpy(&nexthop
->v6_global
, &local
->sin6
.sin6_addr
,
873 /* If directory connected set link-local address. */
874 direct
= if_lookup_by_ipv6(&remote
->sin6
.sin6_addr
,
875 remote
->sin6
.sin6_scope_id
,
878 if_get_ipv6_local(ifp
, &nexthop
->v6_local
);
880 /* Link-local address. */
882 ret
= if_get_ipv6_global(ifp
, &nexthop
->v6_global
);
884 /* If there is no global address. Set link-local
886 global. I know this break RFC specification... */
887 /* In this scenario, the expectation for interop is that
889 * network admin would use a route-map to specify the
894 memcpy(&nexthop
->v6_global
,
895 &local
->sin6
.sin6_addr
,
897 /* Always set the link-local address */
898 memcpy(&nexthop
->v6_local
, &local
->sin6
.sin6_addr
,
902 if (IN6_IS_ADDR_LINKLOCAL(&local
->sin6
.sin6_addr
)
903 || if_lookup_by_ipv6(&remote
->sin6
.sin6_addr
,
904 remote
->sin6
.sin6_scope_id
,
906 peer
->shared_network
= 1;
908 peer
->shared_network
= 0;
911 /* KAME stack specific treatment. */
913 if (IN6_IS_ADDR_LINKLOCAL(&nexthop
->v6_global
)
914 && IN6_LINKLOCAL_IFINDEX(nexthop
->v6_global
)) {
915 SET_IN6_LINKLOCAL_IFINDEX(nexthop
->v6_global
, 0);
917 if (IN6_IS_ADDR_LINKLOCAL(&nexthop
->v6_local
)
918 && IN6_LINKLOCAL_IFINDEX(nexthop
->v6_local
)) {
919 SET_IN6_LINKLOCAL_IFINDEX(nexthop
->v6_local
, 0);
923 /* If we have identified the local interface, there is no error for now.
928 static struct in6_addr
*bgp_info_to_ipv6_nexthop(struct bgp_info
*info
,
931 struct in6_addr
*nexthop
= NULL
;
933 /* Only global address nexthop exists. */
934 if (info
->attr
->mp_nexthop_len
== BGP_ATTR_NHLEN_IPV6_GLOBAL
) {
935 nexthop
= &info
->attr
->mp_nexthop_global
;
936 if (IN6_IS_ADDR_LINKLOCAL(nexthop
))
937 *ifindex
= info
->attr
->nh_ifindex
;
941 /* If both global and link-local address present. */
942 if (info
->attr
->mp_nexthop_len
== BGP_ATTR_NHLEN_IPV6_GLOBAL_AND_LL
) {
943 /* Check if route-map is set to prefer global over link-local */
944 if (info
->attr
->mp_nexthop_prefer_global
) {
945 nexthop
= &info
->attr
->mp_nexthop_global
;
946 if (IN6_IS_ADDR_LINKLOCAL(nexthop
))
947 *ifindex
= info
->attr
->nh_ifindex
;
949 /* Workaround for Cisco's nexthop bug. */
950 if (IN6_IS_ADDR_UNSPECIFIED(
951 &info
->attr
->mp_nexthop_global
)
952 && info
->peer
->su_remote
->sa
.sa_family
955 &info
->peer
->su_remote
->sin6
.sin6_addr
;
956 if (IN6_IS_ADDR_LINKLOCAL(nexthop
))
957 *ifindex
= info
->peer
->nexthop
.ifp
960 nexthop
= &info
->attr
->mp_nexthop_local
;
961 if (IN6_IS_ADDR_LINKLOCAL(nexthop
))
962 *ifindex
= info
->attr
->nh_lla_ifindex
;
970 static int bgp_table_map_apply(struct route_map
*map
, struct prefix
*p
,
971 struct bgp_info
*info
)
973 route_map_result_t ret
;
975 ret
= route_map_apply(map
, p
, RMAP_BGP
, info
);
976 bgp_attr_flush(info
->attr
);
978 if (ret
!= RMAP_DENYMATCH
)
981 if (bgp_debug_zebra(p
)) {
982 if (p
->family
== AF_INET
) {
983 char buf
[2][INET_ADDRSTRLEN
];
985 "Zebra rmap deny: IPv4 route %s/%d nexthop %s",
986 inet_ntop(AF_INET
, &p
->u
.prefix4
, buf
[0],
989 inet_ntop(AF_INET
, &info
->attr
->nexthop
, buf
[1],
992 if (p
->family
== AF_INET6
) {
993 char buf
[2][INET6_ADDRSTRLEN
];
995 struct in6_addr
*nexthop
;
997 nexthop
= bgp_info_to_ipv6_nexthop(info
, &ifindex
);
999 "Zebra rmap deny: IPv6 route %s/%d nexthop %s",
1000 inet_ntop(AF_INET6
, &p
->u
.prefix6
, buf
[0],
1003 inet_ntop(AF_INET6
, nexthop
,
1004 buf
[1], sizeof(buf
[1])));
1010 static struct thread
*bgp_tm_thread_connect
;
1011 static bool bgp_tm_status_connected
;
1012 static bool bgp_tm_chunk_obtained
;
1013 #define BGP_FLOWSPEC_TABLE_CHUNK 100000
1014 static uint32_t bgp_tm_min
, bgp_tm_max
, bgp_tm_chunk_size
;
1015 struct bgp
*bgp_tm_bgp
;
1017 static int bgp_zebra_tm_connect(struct thread
*t
)
1019 struct zclient
*zclient
;
1020 int delay
= 10, ret
= 0;
1022 zclient
= THREAD_ARG(t
);
1023 if (bgp_tm_status_connected
&& zclient
->sock
> 0)
1026 bgp_tm_status_connected
= false;
1027 ret
= tm_table_manager_connect(zclient
);
1030 zlog_info("Error connecting to table manager!");
1031 bgp_tm_status_connected
= false;
1033 if (!bgp_tm_status_connected
)
1034 zlog_debug("Connecting to table manager. Success");
1035 bgp_tm_status_connected
= true;
1036 if (!bgp_tm_chunk_obtained
) {
1037 if (bgp_zebra_get_table_range(bgp_tm_chunk_size
,
1039 &bgp_tm_max
) >= 0) {
1040 bgp_tm_chunk_obtained
= true;
1041 /* parse non installed entries */
1042 bgp_zebra_announce_table(bgp_tm_bgp
, AFI_IP
, SAFI_FLOWSPEC
);
1046 thread_add_timer(bm
->master
, bgp_zebra_tm_connect
, zclient
, delay
,
1047 &bgp_tm_thread_connect
);
1051 bool bgp_zebra_tm_chunk_obtained(void)
1053 return bgp_tm_chunk_obtained
;
1056 uint32_t bgp_zebra_tm_get_id(void)
1058 static int table_id
;
1060 if (!bgp_tm_chunk_obtained
)
1062 return bgp_tm_min
++;
1065 void bgp_zebra_init_tm_connect(struct bgp
*bgp
)
1069 /* if already set, do nothing
1071 if (bgp_tm_thread_connect
!= NULL
)
1073 bgp_tm_status_connected
= false;
1074 bgp_tm_chunk_obtained
= false;
1075 bgp_tm_min
= bgp_tm_max
= 0;
1076 bgp_tm_chunk_size
= BGP_FLOWSPEC_TABLE_CHUNK
;
1078 thread_add_timer(bm
->master
, bgp_zebra_tm_connect
, zclient
, delay
,
1079 &bgp_tm_thread_connect
);
1082 int bgp_zebra_get_table_range(uint32_t chunk_size
,
1083 uint32_t *start
, uint32_t *end
)
1087 if (!bgp_tm_status_connected
)
1089 ret
= tm_get_table_chunk(zclient
, chunk_size
, start
, end
);
1091 flog_err(EC_BGP_TABLE_CHUNK
,
1092 "BGP: Error getting table chunk %u", chunk_size
);
1095 zlog_info("BGP: Table Manager returns range from chunk %u is [%u %u]",
1096 chunk_size
, *start
, *end
);
1100 static int update_ipv4nh_for_route_install(int nh_othervrf
,
1101 struct in_addr
*nexthop
,
1104 struct zapi_nexthop
*api_nh
)
1106 api_nh
->gate
.ipv4
= *nexthop
;
1108 /* Need to set fields appropriately for EVPN routes imported into
1109 * a VRF (which are programmed as onlink on l3-vni SVI) as well as
1110 * connected routes leaked into a VRF.
1113 api_nh
->type
= NEXTHOP_TYPE_IPV4_IFINDEX
;
1114 else if (nh_othervrf
&&
1115 api_nh
->gate
.ipv4
.s_addr
== INADDR_ANY
) {
1116 api_nh
->type
= NEXTHOP_TYPE_IFINDEX
;
1117 api_nh
->ifindex
= attr
->nh_ifindex
;
1119 api_nh
->type
= NEXTHOP_TYPE_IPV4
;
1124 static int update_ipv6nh_for_route_install(int nh_othervrf
,
1125 struct in6_addr
*nexthop
,
1127 struct bgp_info
*ri
,
1128 struct bgp_info
*best_ri
,
1130 struct zapi_nexthop
*api_nh
)
1137 api_nh
->type
= NEXTHOP_TYPE_IPV6_IFINDEX
;
1138 else if (nh_othervrf
) {
1139 if (IN6_IS_ADDR_UNSPECIFIED(nexthop
)) {
1140 api_nh
->type
= NEXTHOP_TYPE_IFINDEX
;
1141 api_nh
->ifindex
= attr
->nh_ifindex
;
1142 } else if (IN6_IS_ADDR_LINKLOCAL(nexthop
)) {
1145 api_nh
->type
= NEXTHOP_TYPE_IPV6_IFINDEX
;
1146 api_nh
->ifindex
= ifindex
;
1148 api_nh
->type
= NEXTHOP_TYPE_IPV6
;
1149 api_nh
->ifindex
= 0;
1152 if (IN6_IS_ADDR_LINKLOCAL(nexthop
)) {
1153 if (ri
== best_ri
&&
1154 attr
->mp_nexthop_len
1155 == BGP_ATTR_NHLEN_IPV6_GLOBAL_AND_LL
)
1156 if (ri
->peer
->nexthop
.ifp
)
1157 ifindex
= ri
->peer
->nexthop
.ifp
1160 if (ri
->peer
->conf_if
)
1161 ifindex
= ri
->peer
->ifp
->ifindex
;
1162 else if (ri
->peer
->ifname
)
1163 ifindex
= ifname2ifindex(
1165 ri
->peer
->bgp
->vrf_id
);
1166 else if (ri
->peer
->nexthop
.ifp
)
1167 ifindex
= ri
->peer
->nexthop
.ifp
1173 api_nh
->type
= NEXTHOP_TYPE_IPV6_IFINDEX
;
1174 api_nh
->ifindex
= ifindex
;
1176 api_nh
->type
= NEXTHOP_TYPE_IPV6
;
1177 api_nh
->ifindex
= 0;
1180 api_nh
->gate
.ipv6
= *nexthop
;
1185 void bgp_zebra_announce(struct bgp_node
*rn
, struct prefix
*p
,
1186 struct bgp_info
*info
, struct bgp
*bgp
, afi_t afi
,
1189 struct zapi_route api
;
1190 struct zapi_nexthop
*api_nh
;
1192 unsigned int valid_nh_count
= 0;
1193 int has_valid_label
= 0;
1196 struct bgp_info
*mpinfo
;
1198 struct attr local_attr
;
1199 struct bgp_info local_info
;
1200 struct bgp_info
*mpinfo_cp
= &local_info
;
1203 int nh_othervrf
= 0;
1204 char buf_prefix
[PREFIX_STRLEN
]; /* filled in if we are debugging */
1208 /* Don't try to install if we're not connected to Zebra or Zebra doesn't
1209 * know of this instance.
1211 if (!bgp_install_info_to_zebra(bgp
))
1214 if (bgp
->main_zebra_update_hold
)
1217 if (bgp_debug_zebra(p
))
1218 prefix2str(p
, buf_prefix
, sizeof(buf_prefix
));
1220 if (safi
== SAFI_FLOWSPEC
)
1221 return bgp_pbr_update_entry(bgp
, &rn
->p
,
1222 info
, afi
, safi
, true);
1225 * vrf leaking support (will have only one nexthop)
1227 if (info
->extra
&& info
->extra
->bgp_orig
)
1230 /* Make Zebra API structure. */
1231 memset(&api
, 0, sizeof(api
));
1232 api
.vrf_id
= bgp
->vrf_id
;
1233 api
.type
= ZEBRA_ROUTE_BGP
;
1236 SET_FLAG(api
.message
, ZAPI_MESSAGE_NEXTHOP
);
1240 if (info
->type
== ZEBRA_ROUTE_BGP
1241 && info
->sub_type
== BGP_ROUTE_IMPORTED
) {
1243 /* Obtain peer from parent */
1244 if (info
->extra
&& info
->extra
->parent
)
1245 peer
= ((struct bgp_info
*)(info
->extra
->parent
))->peer
;
1248 tag
= info
->attr
->tag
;
1250 /* If the route's source is EVPN, flag as such. */
1251 is_evpn
= is_route_parent_evpn(info
);
1253 SET_FLAG(api
.flags
, ZEBRA_FLAG_EVPN_ROUTE
);
1255 if (peer
->sort
== BGP_PEER_IBGP
|| peer
->sort
== BGP_PEER_CONFED
1256 || info
->sub_type
== BGP_ROUTE_AGGREGATE
) {
1257 SET_FLAG(api
.flags
, ZEBRA_FLAG_IBGP
);
1258 SET_FLAG(api
.flags
, ZEBRA_FLAG_ALLOW_RECURSION
);
1261 if ((peer
->sort
== BGP_PEER_EBGP
&& peer
->ttl
!= 1)
1262 || CHECK_FLAG(peer
->flags
, PEER_FLAG_DISABLE_CONNECTED_CHECK
)
1263 || bgp_flag_check(bgp
, BGP_FLAG_DISABLE_NH_CONNECTED_CHK
))
1265 SET_FLAG(api
.flags
, ZEBRA_FLAG_ALLOW_RECURSION
);
1267 /* Metric is currently based on the best-path only */
1268 metric
= info
->attr
->med
;
1269 for (mpinfo
= info
; mpinfo
; mpinfo
= bgp_info_mpath_next(mpinfo
)) {
1270 if (valid_nh_count
>= multipath_num
)
1273 *mpinfo_cp
= *mpinfo
;
1275 /* Get nexthop address-family */
1276 if (p
->family
== AF_INET
1277 && !BGP_ATTR_NEXTHOP_AFI_IP6(mpinfo_cp
->attr
))
1278 nh_family
= AF_INET
;
1279 else if (p
->family
== AF_INET6
1280 || (p
->family
== AF_INET
1281 && BGP_ATTR_NEXTHOP_AFI_IP6(mpinfo_cp
->attr
)))
1282 nh_family
= AF_INET6
;
1286 api_nh
= &api
.nexthops
[valid_nh_count
];
1287 api_nh
->vrf_id
= nh_othervrf
? info
->extra
->bgp_orig
->vrf_id
1289 if (nh_family
== AF_INET
) {
1290 if (bgp_debug_zebra(&api
.prefix
)) {
1291 if (mpinfo
->extra
) {
1293 "%s: p=%s, bgp_is_valid_label: %d",
1294 __func__
, buf_prefix
,
1300 "%s: p=%s, extra is NULL, no label",
1301 __func__
, buf_prefix
);
1305 if (bgp
->table_map
[afi
][safi
].name
) {
1306 /* Copy info and attributes, so the route-map
1307 apply doesn't modify the BGP route info. */
1308 local_attr
= *mpinfo
->attr
;
1309 mpinfo_cp
->attr
= &local_attr
;
1312 if (bgp
->table_map
[afi
][safi
].name
) {
1313 if (!bgp_table_map_apply(
1314 bgp
->table_map
[afi
][safi
].map
, p
,
1318 /* metric/tag is only allowed to be
1319 * overridden on 1st nexthop */
1320 if (mpinfo
== info
) {
1321 metric
= mpinfo_cp
->attr
->med
;
1322 tag
= mpinfo_cp
->attr
->tag
;
1326 nh_updated
= update_ipv4nh_for_route_install(
1328 &mpinfo_cp
->attr
->nexthop
,
1329 mpinfo_cp
->attr
, is_evpn
, api_nh
);
1331 ifindex_t ifindex
= IFINDEX_INTERNAL
;
1332 struct in6_addr
*nexthop
;
1334 if (bgp
->table_map
[afi
][safi
].name
) {
1335 /* Copy info and attributes, so the route-map
1336 apply doesn't modify the BGP route info. */
1337 local_attr
= *mpinfo
->attr
;
1338 mpinfo_cp
->attr
= &local_attr
;
1341 if (bgp
->table_map
[afi
][safi
].name
) {
1342 /* Copy info and attributes, so the route-map
1343 apply doesn't modify the BGP route info. */
1344 local_attr
= *mpinfo
->attr
;
1345 mpinfo_cp
->attr
= &local_attr
;
1347 if (!bgp_table_map_apply(
1348 bgp
->table_map
[afi
][safi
].map
, p
,
1352 /* metric/tag is only allowed to be
1353 * overridden on 1st nexthop */
1354 if (mpinfo
== info
) {
1355 metric
= mpinfo_cp
->attr
->med
;
1356 tag
= mpinfo_cp
->attr
->tag
;
1359 nexthop
= bgp_info_to_ipv6_nexthop(mpinfo_cp
,
1361 nh_updated
= update_ipv6nh_for_route_install(
1362 nh_othervrf
, nexthop
, ifindex
,
1363 mpinfo
, info
, is_evpn
, api_nh
);
1366 /* Did we get proper nexthop info to update zebra? */
1371 && bgp_is_valid_label(&mpinfo
->extra
->label
[0])
1372 && !CHECK_FLAG(api
.flags
, ZEBRA_FLAG_EVPN_ROUTE
)) {
1373 has_valid_label
= 1;
1374 label
= label_pton(&mpinfo
->extra
->label
[0]);
1376 api_nh
->label_num
= 1;
1377 api_nh
->labels
[0] = label
;
1379 memcpy(&api_nh
->rmac
, &(mpinfo
->attr
->rmac
),
1380 sizeof(struct ethaddr
));
1385 /* if this is a evpn route we don't have to include the label */
1386 if (has_valid_label
&& !(CHECK_FLAG(api
.flags
, ZEBRA_FLAG_EVPN_ROUTE
)))
1387 SET_FLAG(api
.message
, ZAPI_MESSAGE_LABEL
);
1390 * When we create an aggregate route we must also
1391 * install a Null0 route in the RIB, so overwrite
1392 * what was written into api with a blackhole route
1394 if (info
->sub_type
== BGP_ROUTE_AGGREGATE
)
1395 zapi_route_set_blackhole(&api
, BLACKHOLE_NULL
);
1397 api
.nexthop_num
= valid_nh_count
;
1399 SET_FLAG(api
.message
, ZAPI_MESSAGE_METRIC
);
1400 api
.metric
= metric
;
1403 SET_FLAG(api
.message
, ZAPI_MESSAGE_TAG
);
1407 distance
= bgp_distance_apply(p
, info
, afi
, safi
, bgp
);
1409 SET_FLAG(api
.message
, ZAPI_MESSAGE_DISTANCE
);
1410 api
.distance
= distance
;
1413 if (bgp_debug_zebra(p
)) {
1414 char prefix_buf
[PREFIX_STRLEN
];
1415 char nh_buf
[INET6_ADDRSTRLEN
];
1419 prefix2str(&api
.prefix
, prefix_buf
, sizeof(prefix_buf
));
1420 zlog_debug("Tx route %s VRF %u %s metric %u tag %" ROUTE_TAG_PRI
1422 valid_nh_count
? "add" : "delete", bgp
->vrf_id
,
1423 prefix_buf
, api
.metric
, api
.tag
, api
.nexthop_num
);
1424 for (i
= 0; i
< api
.nexthop_num
; i
++) {
1425 api_nh
= &api
.nexthops
[i
];
1427 if (api_nh
->type
== NEXTHOP_TYPE_IFINDEX
)
1430 if (api_nh
->type
== NEXTHOP_TYPE_IPV4
)
1431 nh_family
= AF_INET
;
1433 nh_family
= AF_INET6
;
1434 inet_ntop(nh_family
, &api_nh
->gate
, nh_buf
,
1438 label_buf
[0] = '\0';
1440 && !CHECK_FLAG(api
.flags
, ZEBRA_FLAG_EVPN_ROUTE
))
1441 sprintf(label_buf
, "label %u",
1443 zlog_debug(" nhop [%d]: %s if %u VRF %u %s",
1444 i
+ 1, nh_buf
, api_nh
->ifindex
,
1445 api_nh
->vrf_id
, label_buf
);
1449 if (bgp_debug_zebra(p
)) {
1450 int recursion_flag
= 0;
1452 if (CHECK_FLAG(api
.flags
, ZEBRA_FLAG_ALLOW_RECURSION
))
1455 zlog_debug("%s: %s: announcing to zebra (recursion %sset)",
1456 __func__
, buf_prefix
,
1457 (recursion_flag
? "" : "NOT "));
1459 zclient_route_send(valid_nh_count
? ZEBRA_ROUTE_ADD
1460 : ZEBRA_ROUTE_DELETE
,
1464 /* Announce all routes of a table to zebra */
1465 void bgp_zebra_announce_table(struct bgp
*bgp
, afi_t afi
, safi_t safi
)
1467 struct bgp_node
*rn
;
1468 struct bgp_table
*table
;
1469 struct bgp_info
*ri
;
1471 /* Don't try to install if we're not connected to Zebra or Zebra doesn't
1472 * know of this instance.
1474 if (!bgp_install_info_to_zebra(bgp
))
1477 table
= bgp
->rib
[afi
][safi
];
1481 for (rn
= bgp_table_top(table
); rn
; rn
= bgp_route_next(rn
))
1482 for (ri
= rn
->info
; ri
; ri
= ri
->next
)
1483 if (CHECK_FLAG(ri
->flags
, BGP_INFO_SELECTED
) &&
1485 (ri
->type
== ZEBRA_ROUTE_BGP
1486 && (ri
->sub_type
== BGP_ROUTE_NORMAL
1487 || ri
->sub_type
== BGP_ROUTE_IMPORTED
)))
1489 bgp_zebra_announce(rn
, &rn
->p
, ri
, bgp
, afi
,
1493 void bgp_zebra_withdraw(struct prefix
*p
, struct bgp_info
*info
,
1494 struct bgp
*bgp
, safi_t safi
)
1496 struct zapi_route api
;
1499 /* Don't try to install if we're not connected to Zebra or Zebra doesn't
1500 * know of this instance.
1502 if (!bgp_install_info_to_zebra(bgp
))
1505 if (safi
== SAFI_FLOWSPEC
) {
1507 return bgp_pbr_update_entry(peer
->bgp
, p
,
1508 info
, AFI_IP
, safi
, false);
1511 memset(&api
, 0, sizeof(api
));
1512 api
.vrf_id
= bgp
->vrf_id
;
1513 api
.type
= ZEBRA_ROUTE_BGP
;
1517 /* If the route's source is EVPN, flag as such. */
1518 if (is_route_parent_evpn(info
))
1519 SET_FLAG(api
.flags
, ZEBRA_FLAG_EVPN_ROUTE
);
1521 if (bgp_debug_zebra(p
)) {
1522 char buf
[PREFIX_STRLEN
];
1524 prefix2str(&api
.prefix
, buf
, sizeof(buf
));
1525 zlog_debug("Tx route delete VRF %u %s", bgp
->vrf_id
, buf
);
1528 zclient_route_send(ZEBRA_ROUTE_DELETE
, zclient
, &api
);
1531 struct bgp_redist
*bgp_redist_lookup(struct bgp
*bgp
, afi_t afi
, uint8_t type
,
1532 unsigned short instance
)
1534 struct list
*red_list
;
1535 struct listnode
*node
;
1536 struct bgp_redist
*red
;
1538 red_list
= bgp
->redist
[afi
][type
];
1542 for (ALL_LIST_ELEMENTS_RO(red_list
, node
, red
))
1543 if (red
->instance
== instance
)
1549 struct bgp_redist
*bgp_redist_add(struct bgp
*bgp
, afi_t afi
, uint8_t type
,
1550 unsigned short instance
)
1552 struct list
*red_list
;
1553 struct bgp_redist
*red
;
1555 red
= bgp_redist_lookup(bgp
, afi
, type
, instance
);
1559 if (!bgp
->redist
[afi
][type
])
1560 bgp
->redist
[afi
][type
] = list_new();
1562 red_list
= bgp
->redist
[afi
][type
];
1563 red
= (struct bgp_redist
*)XCALLOC(MTYPE_BGP_REDIST
,
1564 sizeof(struct bgp_redist
));
1565 red
->instance
= instance
;
1567 listnode_add(red_list
, red
);
1572 static void bgp_redist_del(struct bgp
*bgp
, afi_t afi
, uint8_t type
,
1573 unsigned short instance
)
1575 struct bgp_redist
*red
;
1577 red
= bgp_redist_lookup(bgp
, afi
, type
, instance
);
1580 listnode_delete(bgp
->redist
[afi
][type
], red
);
1581 XFREE(MTYPE_BGP_REDIST
, red
);
1582 if (!bgp
->redist
[afi
][type
]->count
)
1583 list_delete_and_null(&bgp
->redist
[afi
][type
]);
1587 /* Other routes redistribution into BGP. */
1588 int bgp_redistribute_set(struct bgp
*bgp
, afi_t afi
, int type
,
1589 unsigned short instance
, bool changed
)
1591 /* If redistribute options are changed call
1592 * bgp_redistribute_unreg() to reset the option and withdraw
1596 bgp_redistribute_unreg(bgp
, afi
, type
, instance
);
1598 /* Return if already redistribute flag is set. */
1600 if (redist_check_instance(&zclient
->mi_redist
[afi
][type
],
1604 redist_add_instance(&zclient
->mi_redist
[afi
][type
], instance
);
1606 if (vrf_bitmap_check(zclient
->redist
[afi
][type
], bgp
->vrf_id
))
1610 if (bgp
->vrf_id
== VRF_DEFAULT
1611 && type
== ZEBRA_ROUTE_VNC_DIRECT
) {
1612 vnc_export_bgp_enable(
1613 bgp
, afi
); /* only enables if mode bits cfg'd */
1617 vrf_bitmap_set(zclient
->redist
[afi
][type
], bgp
->vrf_id
);
1621 * Don't try to register if we're not connected to Zebra or Zebra
1622 * doesn't know of this instance.
1624 * When we come up later well resend if needed.
1626 if (!bgp_install_info_to_zebra(bgp
))
1629 if (BGP_DEBUG(zebra
, ZEBRA
))
1630 zlog_debug("Tx redistribute add VRF %u afi %d %s %d",
1631 bgp
->vrf_id
, afi
, zebra_route_string(type
),
1634 /* Send distribute add message to zebra. */
1635 zebra_redistribute_send(ZEBRA_REDISTRIBUTE_ADD
, zclient
, afi
, type
,
1636 instance
, bgp
->vrf_id
);
1641 int bgp_redistribute_resend(struct bgp
*bgp
, afi_t afi
, int type
,
1642 unsigned short instance
)
1644 /* Don't try to send if we're not connected to Zebra or Zebra doesn't
1645 * know of this instance.
1647 if (!bgp_install_info_to_zebra(bgp
))
1650 if (BGP_DEBUG(zebra
, ZEBRA
))
1651 zlog_debug("Tx redistribute del/add VRF %u afi %d %s %d",
1652 bgp
->vrf_id
, afi
, zebra_route_string(type
),
1655 /* Send distribute add message to zebra. */
1656 zebra_redistribute_send(ZEBRA_REDISTRIBUTE_DELETE
, zclient
, afi
, type
,
1657 instance
, bgp
->vrf_id
);
1658 zebra_redistribute_send(ZEBRA_REDISTRIBUTE_ADD
, zclient
, afi
, type
,
1659 instance
, bgp
->vrf_id
);
1664 /* Redistribute with route-map specification. */
1665 int bgp_redistribute_rmap_set(struct bgp_redist
*red
, const char *name
)
1667 if (red
->rmap
.name
&& (strcmp(red
->rmap
.name
, name
) == 0))
1671 XFREE(MTYPE_ROUTE_MAP_NAME
, red
->rmap
.name
);
1672 red
->rmap
.name
= XSTRDUP(MTYPE_ROUTE_MAP_NAME
, name
);
1673 red
->rmap
.map
= route_map_lookup_by_name(name
);
1678 /* Redistribute with metric specification. */
1679 int bgp_redistribute_metric_set(struct bgp
*bgp
, struct bgp_redist
*red
,
1680 afi_t afi
, int type
, uint32_t metric
)
1682 struct bgp_node
*rn
;
1683 struct bgp_info
*ri
;
1685 if (red
->redist_metric_flag
&& red
->redist_metric
== metric
)
1688 red
->redist_metric_flag
= 1;
1689 red
->redist_metric
= metric
;
1691 for (rn
= bgp_table_top(bgp
->rib
[afi
][SAFI_UNICAST
]); rn
;
1692 rn
= bgp_route_next(rn
)) {
1693 for (ri
= rn
->info
; ri
; ri
= ri
->next
) {
1694 if (ri
->sub_type
== BGP_ROUTE_REDISTRIBUTE
1696 && ri
->instance
== red
->instance
) {
1697 struct attr
*old_attr
;
1698 struct attr new_attr
;
1700 bgp_attr_dup(&new_attr
, ri
->attr
);
1701 new_attr
.med
= red
->redist_metric
;
1702 old_attr
= ri
->attr
;
1703 ri
->attr
= bgp_attr_intern(&new_attr
);
1704 bgp_attr_unintern(&old_attr
);
1706 bgp_info_set_flag(rn
, ri
,
1707 BGP_INFO_ATTR_CHANGED
);
1708 bgp_process(bgp
, rn
, afi
, SAFI_UNICAST
);
1716 /* Unset redistribution. */
1717 int bgp_redistribute_unreg(struct bgp
*bgp
, afi_t afi
, int type
,
1718 unsigned short instance
)
1720 struct bgp_redist
*red
;
1722 red
= bgp_redist_lookup(bgp
, afi
, type
, instance
);
1726 /* Return if zebra connection is disabled. */
1728 if (!redist_check_instance(&zclient
->mi_redist
[afi
][type
],
1731 redist_del_instance(&zclient
->mi_redist
[afi
][type
], instance
);
1733 if (!vrf_bitmap_check(zclient
->redist
[afi
][type
], bgp
->vrf_id
))
1735 vrf_bitmap_unset(zclient
->redist
[afi
][type
], bgp
->vrf_id
);
1739 if (bgp_install_info_to_zebra(bgp
)) {
1740 /* Send distribute delete message to zebra. */
1741 if (BGP_DEBUG(zebra
, ZEBRA
))
1742 zlog_debug("Tx redistribute del VRF %u afi %d %s %d",
1743 bgp
->vrf_id
, afi
, zebra_route_string(type
),
1745 zebra_redistribute_send(ZEBRA_REDISTRIBUTE_DELETE
, zclient
, afi
,
1746 type
, instance
, bgp
->vrf_id
);
1749 /* Withdraw redistributed routes from current BGP's routing table. */
1750 bgp_redistribute_withdraw(bgp
, afi
, type
, instance
);
1755 /* Unset redistribution. */
1756 int bgp_redistribute_unset(struct bgp
*bgp
, afi_t afi
, int type
,
1757 unsigned short instance
)
1759 struct bgp_redist
*red
;
1762 * vnc and vpn->vrf checks must be before red check because
1763 * they operate within bgpd irrespective of zebra connection
1764 * status. red lookup fails if there is no zebra connection.
1767 if (bgp
->vrf_id
== VRF_DEFAULT
&& type
== ZEBRA_ROUTE_VNC_DIRECT
) {
1768 vnc_export_bgp_disable(bgp
, afi
);
1772 red
= bgp_redist_lookup(bgp
, afi
, type
, instance
);
1776 bgp_redistribute_unreg(bgp
, afi
, type
, instance
);
1778 /* Unset route-map. */
1780 XFREE(MTYPE_ROUTE_MAP_NAME
, red
->rmap
.name
);
1781 red
->rmap
.name
= NULL
;
1782 red
->rmap
.map
= NULL
;
1785 red
->redist_metric_flag
= 0;
1786 red
->redist_metric
= 0;
1788 bgp_redist_del(bgp
, afi
, type
, instance
);
1793 /* Update redistribute vrf bitmap during triggers like
1794 restart networking or delete/add VRFs */
1795 void bgp_update_redist_vrf_bitmaps(struct bgp
*bgp
, vrf_id_t old_vrf_id
)
1800 for (afi
= AFI_IP
; afi
< AFI_MAX
; afi
++)
1801 for (i
= 0; i
< ZEBRA_ROUTE_MAX
; i
++)
1802 if ((old_vrf_id
== VRF_UNKNOWN
)
1803 || vrf_bitmap_check(zclient
->redist
[afi
][i
],
1805 vrf_bitmap_unset(zclient
->redist
[afi
][i
],
1807 vrf_bitmap_set(zclient
->redist
[afi
][i
],
1813 void bgp_zclient_reset(void)
1815 zclient_reset(zclient
);
1818 /* Register this instance with Zebra. Invoked upon connect (for
1819 * default instance) and when other VRFs are learnt (or created and
1822 void bgp_zebra_instance_register(struct bgp
*bgp
)
1824 /* Don't try to register if we're not connected to Zebra */
1825 if (!zclient
|| zclient
->sock
< 0)
1828 if (BGP_DEBUG(zebra
, ZEBRA
))
1829 zlog_debug("Registering VRF %u", bgp
->vrf_id
);
1831 /* Register for router-id, interfaces, redistributed routes. */
1832 zclient_send_reg_requests(zclient
, bgp
->vrf_id
);
1834 /* For default instance, register to learn about VNIs, if appropriate.
1836 if (bgp
->inst_type
== BGP_INSTANCE_TYPE_DEFAULT
&& is_evpn_enabled())
1837 bgp_zebra_advertise_all_vni(bgp
, 1);
1840 /* Deregister this instance with Zebra. Invoked upon the instance
1841 * being deleted (default or VRF) and it is already registered.
1843 void bgp_zebra_instance_deregister(struct bgp
*bgp
)
1845 /* Don't try to deregister if we're not connected to Zebra */
1846 if (zclient
->sock
< 0)
1849 if (BGP_DEBUG(zebra
, ZEBRA
))
1850 zlog_debug("Deregistering VRF %u", bgp
->vrf_id
);
1852 /* For default instance, unregister learning about VNIs, if appropriate.
1854 if (bgp
->inst_type
== BGP_INSTANCE_TYPE_DEFAULT
&& is_evpn_enabled())
1855 bgp_zebra_advertise_all_vni(bgp
, 0);
1857 /* Deregister for router-id, interfaces, redistributed routes. */
1858 zclient_send_dereg_requests(zclient
, bgp
->vrf_id
);
1861 void bgp_zebra_initiate_radv(struct bgp
*bgp
, struct peer
*peer
)
1863 int ra_interval
= BGP_UNNUM_DEFAULT_RA_INTERVAL
;
1865 /* Don't try to initiate if we're not connected to Zebra */
1866 if (zclient
->sock
< 0)
1869 if (BGP_DEBUG(zebra
, ZEBRA
))
1870 zlog_debug("%u: Initiating RA for peer %s", bgp
->vrf_id
,
1873 zclient_send_interface_radv_req(zclient
, bgp
->vrf_id
, peer
->ifp
, 1,
1877 void bgp_zebra_terminate_radv(struct bgp
*bgp
, struct peer
*peer
)
1879 /* Don't try to terminate if we're not connected to Zebra */
1880 if (zclient
->sock
< 0)
1883 if (BGP_DEBUG(zebra
, ZEBRA
))
1884 zlog_debug("%u: Terminating RA for peer %s", bgp
->vrf_id
,
1887 zclient_send_interface_radv_req(zclient
, bgp
->vrf_id
, peer
->ifp
, 0, 0);
1890 int bgp_zebra_advertise_subnet(struct bgp
*bgp
, int advertise
, vni_t vni
)
1892 struct stream
*s
= NULL
;
1895 if (!zclient
|| zclient
->sock
< 0)
1898 /* Don't try to register if Zebra doesn't know of this instance. */
1899 if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp
))
1905 zclient_create_header(s
, ZEBRA_ADVERTISE_SUBNET
, bgp
->vrf_id
);
1906 stream_putc(s
, advertise
);
1907 stream_put3(s
, vni
);
1908 stream_putw_at(s
, 0, stream_get_endp(s
));
1910 return zclient_send_message(zclient
);
1913 int bgp_zebra_advertise_gw_macip(struct bgp
*bgp
, int advertise
, vni_t vni
)
1915 struct stream
*s
= NULL
;
1918 if (!zclient
|| zclient
->sock
< 0)
1921 /* Don't try to register if Zebra doesn't know of this instance. */
1922 if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp
))
1928 zclient_create_header(s
, ZEBRA_ADVERTISE_DEFAULT_GW
, bgp
->vrf_id
);
1929 stream_putc(s
, advertise
);
1930 stream_putl(s
, vni
);
1931 stream_putw_at(s
, 0, stream_get_endp(s
));
1933 return zclient_send_message(zclient
);
1936 int bgp_zebra_advertise_all_vni(struct bgp
*bgp
, int advertise
)
1941 if (!zclient
|| zclient
->sock
< 0)
1944 /* Don't try to register if Zebra doesn't know of this instance. */
1945 if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp
))
1951 zclient_create_header(s
, ZEBRA_ADVERTISE_ALL_VNI
, bgp
->vrf_id
);
1952 stream_putc(s
, advertise
);
1953 stream_putw_at(s
, 0, stream_get_endp(s
));
1955 return zclient_send_message(zclient
);
1958 static int rule_notify_owner(int command
, struct zclient
*zclient
,
1959 zebra_size_t length
, vrf_id_t vrf_id
)
1961 uint32_t seqno
, priority
, unique
;
1962 enum zapi_rule_notify_owner note
;
1963 struct bgp_pbr_action
*bgp_pbra
;
1966 if (!zapi_rule_notify_decode(zclient
->ibuf
, &seqno
, &priority
, &unique
,
1970 bgp_pbra
= bgp_pbr_action_rule_lookup(vrf_id
, unique
);
1972 if (BGP_DEBUG(zebra
, ZEBRA
))
1973 zlog_debug("%s: Fail to look BGP rule (%u)",
1974 __PRETTY_FUNCTION__
, unique
);
1979 case ZAPI_RULE_FAIL_INSTALL
:
1980 if (BGP_DEBUG(zebra
, ZEBRA
))
1981 zlog_debug("%s: Received RULE_FAIL_INSTALL",
1982 __PRETTY_FUNCTION__
);
1983 bgp_pbra
->installed
= false;
1984 bgp_pbra
->install_in_progress
= false;
1986 case ZAPI_RULE_INSTALLED
:
1987 bgp_pbra
->installed
= true;
1988 bgp_pbra
->install_in_progress
= false;
1989 if (BGP_DEBUG(zebra
, ZEBRA
))
1990 zlog_debug("%s: Received RULE_INSTALLED",
1991 __PRETTY_FUNCTION__
);
1993 case ZAPI_RULE_FAIL_REMOVE
:
1994 case ZAPI_RULE_REMOVED
:
1995 if (BGP_DEBUG(zebra
, ZEBRA
))
1996 zlog_debug("%s: Received RULE REMOVED",
1997 __PRETTY_FUNCTION__
);
2004 static int ipset_notify_owner(int command
, struct zclient
*zclient
,
2005 zebra_size_t length
, vrf_id_t vrf_id
)
2008 enum zapi_ipset_notify_owner note
;
2009 struct bgp_pbr_match
*bgp_pbim
;
2011 if (!zapi_ipset_notify_decode(zclient
->ibuf
,
2016 bgp_pbim
= bgp_pbr_match_ipset_lookup(vrf_id
, unique
);
2018 if (BGP_DEBUG(zebra
, ZEBRA
))
2019 zlog_debug("%s: Fail to look BGP match ( %u, ID %u)",
2020 __PRETTY_FUNCTION__
, note
, unique
);
2025 case ZAPI_IPSET_FAIL_INSTALL
:
2026 if (BGP_DEBUG(zebra
, ZEBRA
))
2027 zlog_debug("%s: Received IPSET_FAIL_INSTALL",
2028 __PRETTY_FUNCTION__
);
2029 bgp_pbim
->installed
= false;
2030 bgp_pbim
->install_in_progress
= false;
2032 case ZAPI_IPSET_INSTALLED
:
2033 bgp_pbim
->installed
= true;
2034 bgp_pbim
->install_in_progress
= false;
2035 if (BGP_DEBUG(zebra
, ZEBRA
))
2036 zlog_debug("%s: Received IPSET_INSTALLED",
2037 __PRETTY_FUNCTION__
);
2039 case ZAPI_IPSET_FAIL_REMOVE
:
2040 case ZAPI_IPSET_REMOVED
:
2041 if (BGP_DEBUG(zebra
, ZEBRA
))
2042 zlog_debug("%s: Received IPSET REMOVED",
2043 __PRETTY_FUNCTION__
);
2050 static int ipset_entry_notify_owner(int command
, struct zclient
*zclient
,
2051 zebra_size_t length
, vrf_id_t vrf_id
)
2054 char ipset_name
[ZEBRA_IPSET_NAME_SIZE
];
2055 enum zapi_ipset_entry_notify_owner note
;
2056 struct bgp_pbr_match_entry
*bgp_pbime
;
2058 if (!zapi_ipset_entry_notify_decode(
2064 bgp_pbime
= bgp_pbr_match_ipset_entry_lookup(vrf_id
,
2068 if (BGP_DEBUG(zebra
, ZEBRA
))
2069 zlog_debug("%s: Fail to look BGP match entry (%u, ID %u)",
2070 __PRETTY_FUNCTION__
, note
, unique
);
2075 case ZAPI_IPSET_ENTRY_FAIL_INSTALL
:
2076 if (BGP_DEBUG(zebra
, ZEBRA
))
2077 zlog_debug("%s: Received IPSET_ENTRY_FAIL_INSTALL",
2078 __PRETTY_FUNCTION__
);
2079 bgp_pbime
->installed
= false;
2080 bgp_pbime
->install_in_progress
= false;
2082 case ZAPI_IPSET_ENTRY_INSTALLED
:
2084 struct bgp_info
*bgp_info
;
2085 struct bgp_info_extra
*extra
;
2087 bgp_pbime
->installed
= true;
2088 bgp_pbime
->install_in_progress
= false;
2089 if (BGP_DEBUG(zebra
, ZEBRA
))
2090 zlog_debug("%s: Received IPSET_ENTRY_INSTALLED",
2091 __PRETTY_FUNCTION__
);
2092 /* link bgp_info to bpme */
2093 bgp_info
= (struct bgp_info
*)bgp_pbime
->bgp_info
;
2094 extra
= bgp_info_extra_get(bgp_info
);
2095 if (extra
->bgp_fs_pbr
== NULL
)
2096 extra
->bgp_fs_pbr
= list_new();
2097 listnode_add(extra
->bgp_fs_pbr
, bgp_pbime
);
2100 case ZAPI_IPSET_ENTRY_FAIL_REMOVE
:
2101 case ZAPI_IPSET_ENTRY_REMOVED
:
2102 if (BGP_DEBUG(zebra
, ZEBRA
))
2103 zlog_debug("%s: Received IPSET_ENTRY_REMOVED",
2104 __PRETTY_FUNCTION__
);
2110 static int iptable_notify_owner(int command
, struct zclient
*zclient
,
2111 zebra_size_t length
, vrf_id_t vrf_id
)
2114 enum zapi_iptable_notify_owner note
;
2115 struct bgp_pbr_match
*bgpm
;
2117 if (!zapi_iptable_notify_decode(
2122 bgpm
= bgp_pbr_match_iptable_lookup(vrf_id
, unique
);
2124 if (BGP_DEBUG(zebra
, ZEBRA
))
2125 zlog_debug("%s: Fail to look BGP iptable (%u %u)",
2126 __PRETTY_FUNCTION__
, note
, unique
);
2130 case ZAPI_IPTABLE_FAIL_INSTALL
:
2131 if (BGP_DEBUG(zebra
, ZEBRA
))
2132 zlog_debug("%s: Received IPTABLE_FAIL_INSTALL",
2133 __PRETTY_FUNCTION__
);
2134 bgpm
->installed_in_iptable
= false;
2135 bgpm
->install_iptable_in_progress
= false;
2137 case ZAPI_IPTABLE_INSTALLED
:
2138 bgpm
->installed_in_iptable
= true;
2139 bgpm
->install_iptable_in_progress
= false;
2140 if (BGP_DEBUG(zebra
, ZEBRA
))
2141 zlog_debug("%s: Received IPTABLE_INSTALLED",
2142 __PRETTY_FUNCTION__
);
2143 bgpm
->action
->refcnt
++;
2145 case ZAPI_IPTABLE_FAIL_REMOVE
:
2146 case ZAPI_IPTABLE_REMOVED
:
2147 if (BGP_DEBUG(zebra
, ZEBRA
))
2148 zlog_debug("%s: Received IPTABLE REMOVED",
2149 __PRETTY_FUNCTION__
);
2155 static void bgp_encode_pbr_rule_action(struct stream
*s
,
2156 struct bgp_pbr_action
*pbra
)
2160 stream_putl(s
, 0); /* seqno unused */
2161 stream_putl(s
, 0); /* ruleno unused */
2163 stream_putl(s
, pbra
->unique
);
2165 memset(&any
, 0, sizeof(any
));
2166 any
.family
= AF_INET
;
2167 stream_putc(s
, any
.family
);
2168 stream_putc(s
, any
.prefixlen
);
2169 stream_put(s
, &any
.u
.prefix
, prefix_blen(&any
));
2171 stream_putw(s
, 0); /* src port */
2173 stream_putc(s
, any
.family
);
2174 stream_putc(s
, any
.prefixlen
);
2175 stream_put(s
, &any
.u
.prefix
, prefix_blen(&any
));
2177 stream_putw(s
, 0); /* dst port */
2179 stream_putl(s
, pbra
->fwmark
); /* fwmark */
2181 stream_putl(s
, pbra
->table_id
);
2183 stream_putl(s
, 0); /* ifindex unused */
2186 static void bgp_encode_pbr_ipset_match(struct stream
*s
,
2187 struct bgp_pbr_match
*pbim
)
2189 stream_putl(s
, pbim
->unique
);
2190 stream_putl(s
, pbim
->type
);
2192 stream_put(s
, pbim
->ipset_name
,
2193 ZEBRA_IPSET_NAME_SIZE
);
2198 static void bgp_encode_pbr_ipset_entry_match(struct stream
*s
,
2199 struct bgp_pbr_match_entry
*pbime
)
2201 stream_putl(s
, pbime
->unique
);
2202 /* check that back pointer is not null */
2203 stream_put(s
, pbime
->backpointer
->ipset_name
,
2204 ZEBRA_IPSET_NAME_SIZE
);
2206 stream_putc(s
, pbime
->src
.family
);
2207 stream_putc(s
, pbime
->src
.prefixlen
);
2208 stream_put(s
, &pbime
->src
.u
.prefix
, prefix_blen(&pbime
->src
));
2210 stream_putc(s
, pbime
->dst
.family
);
2211 stream_putc(s
, pbime
->dst
.prefixlen
);
2212 stream_put(s
, &pbime
->dst
.u
.prefix
, prefix_blen(&pbime
->dst
));
2214 stream_putw(s
, pbime
->src_port_min
);
2215 stream_putw(s
, pbime
->src_port_max
);
2216 stream_putw(s
, pbime
->dst_port_min
);
2217 stream_putw(s
, pbime
->dst_port_max
);
2218 stream_putc(s
, pbime
->proto
);
2221 static void bgp_encode_pbr_iptable_match(struct stream
*s
,
2222 struct bgp_pbr_action
*bpa
,
2223 struct bgp_pbr_match
*pbm
)
2225 stream_putl(s
, pbm
->unique2
);
2227 stream_putl(s
, pbm
->type
);
2229 stream_putl(s
, pbm
->flags
);
2231 /* TODO: correlate with what is contained
2232 * into bgp_pbr_action.
2233 * currently only forward supported
2235 if (bpa
->nh
.type
== NEXTHOP_TYPE_BLACKHOLE
)
2236 stream_putl(s
, ZEBRA_IPTABLES_DROP
);
2238 stream_putl(s
, ZEBRA_IPTABLES_FORWARD
);
2239 stream_putl(s
, bpa
->fwmark
);
2240 stream_put(s
, pbm
->ipset_name
,
2241 ZEBRA_IPSET_NAME_SIZE
);
2242 stream_putw(s
, pbm
->pkt_len_min
);
2243 stream_putw(s
, pbm
->pkt_len_max
);
2244 stream_putw(s
, pbm
->tcp_flags
);
2245 stream_putw(s
, pbm
->tcp_mask_flags
);
2246 stream_putc(s
, pbm
->dscp_value
);
2247 stream_putc(s
, pbm
->fragment
);
2250 /* BGP has established connection with Zebra. */
2251 static void bgp_zebra_connected(struct zclient
*zclient
)
2255 zclient_num_connects
++; /* increment even if not responding */
2257 /* At this point, we may or may not have BGP instances configured, but
2258 * we're only interested in the default VRF (others wouldn't have learnt
2259 * the VRF from Zebra yet.)
2261 bgp
= bgp_get_default();
2265 bgp_zebra_instance_register(bgp
);
2267 /* Send the client registration */
2268 bfd_client_sendmsg(zclient
, ZEBRA_BFD_CLIENT_REGISTER
);
2270 /* tell label pool that zebra is connected */
2271 bgp_lp_event_zebra_up();
2273 /* TODO - What if we have peers and networks configured, do we have to
2278 static int bgp_zebra_process_local_es(int cmd
, struct zclient
*zclient
,
2279 zebra_size_t length
, vrf_id_t vrf_id
)
2282 struct bgp
*bgp
= NULL
;
2283 struct stream
*s
= NULL
;
2284 char buf
[ESI_STR_LEN
];
2285 char buf1
[INET6_ADDRSTRLEN
];
2286 struct ipaddr originator_ip
;
2288 memset(&esi
, 0, sizeof(esi_t
));
2289 memset(&originator_ip
, 0, sizeof(struct ipaddr
));
2291 bgp
= bgp_lookup_by_vrf_id(vrf_id
);
2296 stream_get(&esi
, s
, sizeof(esi_t
));
2297 stream_get(&originator_ip
, s
, sizeof(struct ipaddr
));
2299 if (BGP_DEBUG(zebra
, ZEBRA
))
2300 zlog_debug("Rx %s ESI %s originator-ip %s",
2301 (cmd
== ZEBRA_LOCAL_ES_ADD
) ? "add" : "del",
2302 esi_to_str(&esi
, buf
, sizeof(buf
)),
2303 ipaddr2str(&originator_ip
, buf1
, sizeof(buf1
)));
2305 if (cmd
== ZEBRA_LOCAL_ES_ADD
)
2306 bgp_evpn_local_es_add(bgp
, &esi
, &originator_ip
);
2308 bgp_evpn_local_es_del(bgp
, &esi
, &originator_ip
);
2312 static int bgp_zebra_process_local_l3vni(int cmd
, struct zclient
*zclient
,
2313 zebra_size_t length
, vrf_id_t vrf_id
)
2316 char buf
[ETHER_ADDR_STRLEN
];
2318 struct ethaddr rmac
;
2319 struct in_addr originator_ip
;
2322 memset(&rmac
, 0, sizeof(struct ethaddr
));
2323 memset(&originator_ip
, 0, sizeof(struct in_addr
));
2325 l3vni
= stream_getl(s
);
2326 if (cmd
== ZEBRA_L3VNI_ADD
) {
2327 stream_get(&rmac
, s
, sizeof(struct ethaddr
));
2328 originator_ip
.s_addr
= stream_get_ipv4(s
);
2329 stream_get(&filter
, s
, sizeof(int));
2332 if (BGP_DEBUG(zebra
, ZEBRA
))
2333 zlog_debug("Rx L3-VNI %s VRF %s VNI %u RMAC %s filter %s",
2334 (cmd
== ZEBRA_L3VNI_ADD
) ? "add" : "del",
2335 vrf_id_to_name(vrf_id
), l3vni
,
2336 prefix_mac2str(&rmac
, buf
, sizeof(buf
)),
2337 filter
? "prefix-routes-only" : "none");
2339 if (cmd
== ZEBRA_L3VNI_ADD
)
2340 bgp_evpn_local_l3vni_add(l3vni
, vrf_id
, &rmac
, originator_ip
,
2343 bgp_evpn_local_l3vni_del(l3vni
, vrf_id
);
2348 static int bgp_zebra_process_local_vni(int command
, struct zclient
*zclient
,
2349 zebra_size_t length
, vrf_id_t vrf_id
)
2354 struct in_addr vtep_ip
= {INADDR_ANY
};
2355 vrf_id_t tenant_vrf_id
= VRF_DEFAULT
;
2358 vni
= stream_getl(s
);
2359 if (command
== ZEBRA_VNI_ADD
) {
2360 vtep_ip
.s_addr
= stream_get_ipv4(s
);
2361 stream_get(&tenant_vrf_id
, s
, sizeof(vrf_id_t
));
2364 bgp
= bgp_lookup_by_vrf_id(vrf_id
);
2368 if (BGP_DEBUG(zebra
, ZEBRA
))
2369 zlog_debug("Rx VNI %s VRF %s VNI %u tenant-vrf %s",
2370 (command
== ZEBRA_VNI_ADD
) ? "add" : "del",
2371 vrf_id_to_name(vrf_id
), vni
,
2372 vrf_id_to_name(tenant_vrf_id
));
2374 if (command
== ZEBRA_VNI_ADD
)
2375 return bgp_evpn_local_vni_add(
2376 bgp
, vni
, vtep_ip
.s_addr
? vtep_ip
: bgp
->router_id
,
2379 return bgp_evpn_local_vni_del(bgp
, vni
);
2382 static int bgp_zebra_process_local_macip(int command
, struct zclient
*zclient
,
2383 zebra_size_t length
, vrf_id_t vrf_id
)
2391 char buf
[ETHER_ADDR_STRLEN
];
2392 char buf1
[INET6_ADDRSTRLEN
];
2394 uint32_t seqnum
= 0;
2396 memset(&ip
, 0, sizeof(ip
));
2398 vni
= stream_getl(s
);
2399 stream_get(&mac
.octet
, s
, ETH_ALEN
);
2400 ipa_len
= stream_getl(s
);
2401 if (ipa_len
!= 0 && ipa_len
!= IPV4_MAX_BYTELEN
2402 && ipa_len
!= IPV6_MAX_BYTELEN
) {
2403 flog_err(EC_BGP_MACIP_LEN
,
2404 "%u:Recv MACIP %s with invalid IP addr length %d",
2405 vrf_id
, (command
== ZEBRA_MACIP_ADD
) ? "Add" : "Del",
2412 (ipa_len
== IPV4_MAX_BYTELEN
) ? IPADDR_V4
: IPADDR_V6
;
2413 stream_get(&ip
.ip
.addr
, s
, ipa_len
);
2415 if (command
== ZEBRA_MACIP_ADD
) {
2416 flags
= stream_getc(s
);
2417 seqnum
= stream_getl(s
);
2420 bgp
= bgp_lookup_by_vrf_id(vrf_id
);
2424 if (BGP_DEBUG(zebra
, ZEBRA
))
2425 zlog_debug("%u:Recv MACIP %s flags 0x%x MAC %s IP %s VNI %u seq %u",
2426 vrf_id
, (command
== ZEBRA_MACIP_ADD
) ? "Add" : "Del",
2427 flags
, prefix_mac2str(&mac
, buf
, sizeof(buf
)),
2428 ipaddr2str(&ip
, buf1
, sizeof(buf1
)), vni
, seqnum
);
2430 if (command
== ZEBRA_MACIP_ADD
)
2431 return bgp_evpn_local_macip_add(bgp
, vni
, &mac
, &ip
,
2434 return bgp_evpn_local_macip_del(bgp
, vni
, &mac
, &ip
);
2437 static void bgp_zebra_process_local_ip_prefix(int cmd
, struct zclient
*zclient
,
2438 zebra_size_t length
,
2441 struct stream
*s
= NULL
;
2442 struct bgp
*bgp_vrf
= NULL
;
2444 char buf
[PREFIX_STRLEN
];
2446 memset(&p
, 0, sizeof(struct prefix
));
2448 stream_get(&p
, s
, sizeof(struct prefix
));
2450 bgp_vrf
= bgp_lookup_by_vrf_id(vrf_id
);
2454 if (BGP_DEBUG(zebra
, ZEBRA
))
2455 zlog_debug("Recv prefix %s %s on vrf %s",
2456 prefix2str(&p
, buf
, sizeof(buf
)),
2457 (cmd
== ZEBRA_IP_PREFIX_ROUTE_ADD
) ? "ADD" : "DEL",
2458 vrf_id_to_name(vrf_id
));
2460 if (cmd
== ZEBRA_IP_PREFIX_ROUTE_ADD
) {
2462 if (p
.family
== AF_INET
)
2463 return bgp_evpn_advertise_type5_route(
2464 bgp_vrf
, &p
, NULL
, AFI_IP
, SAFI_UNICAST
);
2466 return bgp_evpn_advertise_type5_route(
2467 bgp_vrf
, &p
, NULL
, AFI_IP6
, SAFI_UNICAST
);
2470 if (p
.family
== AF_INET
)
2471 return bgp_evpn_withdraw_type5_route(
2472 bgp_vrf
, &p
, AFI_IP
, SAFI_UNICAST
);
2474 return bgp_evpn_withdraw_type5_route(
2475 bgp_vrf
, &p
, AFI_IP6
, SAFI_UNICAST
);
2479 static void bgp_zebra_process_label_chunk(
2481 struct zclient
*zclient
,
2482 zebra_size_t length
,
2485 struct stream
*s
= NULL
;
2486 uint8_t response_keep
;
2490 unsigned short instance
;
2493 STREAM_GETC(s
, proto
);
2494 STREAM_GETW(s
, instance
);
2495 STREAM_GETC(s
, response_keep
);
2496 STREAM_GETL(s
, first
);
2497 STREAM_GETL(s
, last
);
2499 if (zclient
->redist_default
!= proto
) {
2500 flog_err(EC_BGP_LM_ERROR
, "Got LM msg with wrong proto %u",
2504 if (zclient
->instance
!= instance
) {
2505 flog_err(EC_BGP_LM_ERROR
, "Got LM msg with wrong instance %u",
2511 first
< MPLS_LABEL_UNRESERVED_MIN
||
2512 last
> MPLS_LABEL_UNRESERVED_MAX
) {
2514 flog_err(EC_BGP_LM_ERROR
, "%s: Invalid Label chunk: %u - %u",
2515 __func__
, first
, last
);
2518 if (BGP_DEBUG(zebra
, ZEBRA
)) {
2519 zlog_debug("Label Chunk assign: %u - %u (%u) ",
2520 first
, last
, response_keep
);
2523 bgp_lp_event_chunk(response_keep
, first
, last
);
2525 stream_failure
: /* for STREAM_GETX */
2529 extern struct zebra_privs_t bgpd_privs
;
2531 void bgp_zebra_init(struct thread_master
*master
, unsigned short instance
)
2533 zclient_num_connects
= 0;
2535 /* Set default values. */
2536 zclient
= zclient_new_notify(master
, &zclient_options_default
);
2537 zclient_init(zclient
, ZEBRA_ROUTE_BGP
, 0, &bgpd_privs
);
2538 zclient
->zebra_connected
= bgp_zebra_connected
;
2539 zclient
->router_id_update
= bgp_router_id_update
;
2540 zclient
->interface_add
= bgp_interface_add
;
2541 zclient
->interface_delete
= bgp_interface_delete
;
2542 zclient
->interface_address_add
= bgp_interface_address_add
;
2543 zclient
->interface_address_delete
= bgp_interface_address_delete
;
2544 zclient
->interface_nbr_address_add
= bgp_interface_nbr_address_add
;
2545 zclient
->interface_nbr_address_delete
=
2546 bgp_interface_nbr_address_delete
;
2547 zclient
->interface_vrf_update
= bgp_interface_vrf_update
;
2548 zclient
->redistribute_route_add
= zebra_read_route
;
2549 zclient
->redistribute_route_del
= zebra_read_route
;
2550 zclient
->interface_up
= bgp_interface_up
;
2551 zclient
->interface_down
= bgp_interface_down
;
2552 zclient
->nexthop_update
= bgp_read_nexthop_update
;
2553 zclient
->import_check_update
= bgp_read_import_check_update
;
2554 zclient
->fec_update
= bgp_read_fec_update
;
2555 zclient
->local_es_add
= bgp_zebra_process_local_es
;
2556 zclient
->local_es_del
= bgp_zebra_process_local_es
;
2557 zclient
->local_vni_add
= bgp_zebra_process_local_vni
;
2558 zclient
->local_vni_del
= bgp_zebra_process_local_vni
;
2559 zclient
->local_macip_add
= bgp_zebra_process_local_macip
;
2560 zclient
->local_macip_del
= bgp_zebra_process_local_macip
;
2561 zclient
->local_l3vni_add
= bgp_zebra_process_local_l3vni
;
2562 zclient
->local_l3vni_del
= bgp_zebra_process_local_l3vni
;
2563 zclient
->local_ip_prefix_add
= bgp_zebra_process_local_ip_prefix
;
2564 zclient
->local_ip_prefix_del
= bgp_zebra_process_local_ip_prefix
;
2565 zclient
->label_chunk
= bgp_zebra_process_label_chunk
;
2566 zclient
->rule_notify_owner
= rule_notify_owner
;
2567 zclient
->ipset_notify_owner
= ipset_notify_owner
;
2568 zclient
->ipset_entry_notify_owner
= ipset_entry_notify_owner
;
2569 zclient
->iptable_notify_owner
= iptable_notify_owner
;
2570 zclient
->instance
= instance
;
2573 void bgp_zebra_destroy(void)
2575 if (zclient
== NULL
)
2577 zclient_stop(zclient
);
2578 zclient_free(zclient
);
2582 int bgp_zebra_num_connects(void)
2584 return zclient_num_connects
;
2587 void bgp_send_pbr_rule_action(struct bgp_pbr_action
*pbra
, bool install
)
2591 if (pbra
->install_in_progress
)
2593 if (BGP_DEBUG(zebra
, ZEBRA
))
2594 zlog_debug("%s: table %d fwmark %d %d",
2595 __PRETTY_FUNCTION__
,
2596 pbra
->table_id
, pbra
->fwmark
, install
);
2600 zclient_create_header(s
,
2601 install
? ZEBRA_RULE_ADD
: ZEBRA_RULE_DELETE
,
2603 stream_putl(s
, 1); /* send one pbr action */
2605 bgp_encode_pbr_rule_action(s
, pbra
);
2607 stream_putw_at(s
, 0, stream_get_endp(s
));
2608 if (!zclient_send_message(zclient
) && install
)
2609 pbra
->install_in_progress
= true;
2612 void bgp_send_pbr_ipset_match(struct bgp_pbr_match
*pbrim
, bool install
)
2616 if (pbrim
->install_in_progress
)
2618 if (BGP_DEBUG(zebra
, ZEBRA
))
2619 zlog_debug("%s: name %s type %d %d, ID %u",
2620 __PRETTY_FUNCTION__
,
2621 pbrim
->ipset_name
, pbrim
->type
,
2622 install
, pbrim
->unique
);
2626 zclient_create_header(s
,
2627 install
? ZEBRA_IPSET_CREATE
:
2628 ZEBRA_IPSET_DESTROY
,
2631 stream_putl(s
, 1); /* send one pbr action */
2633 bgp_encode_pbr_ipset_match(s
, pbrim
);
2635 stream_putw_at(s
, 0, stream_get_endp(s
));
2636 if (!zclient_send_message(zclient
) && install
)
2637 pbrim
->install_in_progress
= true;
2640 void bgp_send_pbr_ipset_entry_match(struct bgp_pbr_match_entry
*pbrime
,
2645 if (pbrime
->install_in_progress
)
2647 if (BGP_DEBUG(zebra
, ZEBRA
))
2648 zlog_debug("%s: name %s %d %d, ID %u", __PRETTY_FUNCTION__
,
2649 pbrime
->backpointer
->ipset_name
,
2650 pbrime
->unique
, install
, pbrime
->unique
);
2654 zclient_create_header(s
,
2655 install
? ZEBRA_IPSET_ENTRY_ADD
:
2656 ZEBRA_IPSET_ENTRY_DELETE
,
2659 stream_putl(s
, 1); /* send one pbr action */
2661 bgp_encode_pbr_ipset_entry_match(s
, pbrime
);
2663 stream_putw_at(s
, 0, stream_get_endp(s
));
2664 if (!zclient_send_message(zclient
) && install
)
2665 pbrime
->install_in_progress
= true;
2668 static void bgp_encode_pbr_interface_list(struct bgp
*bgp
, struct stream
*s
)
2670 struct bgp_pbr_config
*bgp_pbr_cfg
= bgp
->bgp_pbr_cfg
;
2671 struct bgp_pbr_interface_head
*head
;
2672 struct bgp_pbr_interface
*pbr_if
;
2673 struct interface
*ifp
;
2677 head
= &(bgp_pbr_cfg
->ifaces_by_name_ipv4
);
2679 RB_FOREACH (pbr_if
, bgp_pbr_interface_head
, head
) {
2680 ifp
= if_lookup_by_name(pbr_if
->name
, bgp
->vrf_id
);
2682 stream_putl(s
, ifp
->ifindex
);
2686 static int bgp_pbr_get_ifnumber(struct bgp
*bgp
)
2688 struct bgp_pbr_config
*bgp_pbr_cfg
= bgp
->bgp_pbr_cfg
;
2689 struct bgp_pbr_interface_head
*head
;
2690 struct bgp_pbr_interface
*pbr_if
;
2695 head
= &(bgp_pbr_cfg
->ifaces_by_name_ipv4
);
2697 RB_FOREACH (pbr_if
, bgp_pbr_interface_head
, head
) {
2698 if (if_lookup_by_name(pbr_if
->name
, bgp
->vrf_id
))
2704 void bgp_send_pbr_iptable(struct bgp_pbr_action
*pba
,
2705 struct bgp_pbr_match
*pbm
,
2712 if (pbm
->install_iptable_in_progress
)
2714 if (BGP_DEBUG(zebra
, ZEBRA
))
2715 zlog_debug("%s: name %s type %d mark %d %d, ID %u",
2716 __PRETTY_FUNCTION__
, pbm
->ipset_name
,
2717 pbm
->type
, pba
->fwmark
, install
,
2722 zclient_create_header(s
,
2723 install
? ZEBRA_IPTABLE_ADD
:
2724 ZEBRA_IPTABLE_DELETE
,
2727 bgp_encode_pbr_iptable_match(s
, pba
, pbm
);
2728 nb_interface
= bgp_pbr_get_ifnumber(pba
->bgp
);
2729 stream_putl(s
, nb_interface
);
2731 bgp_encode_pbr_interface_list(pba
->bgp
, s
);
2732 stream_putw_at(s
, 0, stream_get_endp(s
));
2733 ret
= zclient_send_message(zclient
);
2738 pbm
->install_iptable_in_progress
= true;
2742 /* inject in table <table_id> a default route to:
2743 * - if nexthop IP is present : to this nexthop
2744 * - if vrf is different from local : to the matching VRF
2746 void bgp_zebra_announce_default(struct bgp
*bgp
, struct nexthop
*nh
,
2747 afi_t afi
, uint32_t table_id
, bool announce
)
2749 struct zapi_nexthop
*api_nh
;
2750 struct zapi_route api
;
2753 if (!nh
|| nh
->type
!= NEXTHOP_TYPE_IPV4
2754 || nh
->vrf_id
== VRF_UNKNOWN
)
2756 memset(&p
, 0, sizeof(struct prefix
));
2761 memset(&api
, 0, sizeof(api
));
2762 api
.vrf_id
= bgp
->vrf_id
;
2763 api
.type
= ZEBRA_ROUTE_BGP
;
2764 api
.safi
= SAFI_UNICAST
;
2766 api
.tableid
= table_id
;
2767 api
.nexthop_num
= 1;
2768 SET_FLAG(api
.message
, ZAPI_MESSAGE_TABLEID
);
2769 SET_FLAG(api
.message
, ZAPI_MESSAGE_NEXTHOP
);
2770 api_nh
= &api
.nexthops
[0];
2773 if (nh
->gate
.ipv4
.s_addr
) {
2774 char buff
[PREFIX_STRLEN
];
2776 api_nh
->vrf_id
= nh
->vrf_id
;
2777 api_nh
->gate
.ipv4
= nh
->gate
.ipv4
;
2778 api_nh
->type
= NEXTHOP_TYPE_IPV4
;
2780 inet_ntop(AF_INET
, &(nh
->gate
.ipv4
), buff
, INET_ADDRSTRLEN
);
2781 if (BGP_DEBUG(zebra
, ZEBRA
))
2782 zlog_info("BGP: %s default route to %s table %d (redirect IP)",
2783 announce
? "adding" : "withdrawing",
2785 zclient_route_send(announce
? ZEBRA_ROUTE_ADD
2786 : ZEBRA_ROUTE_DELETE
,
2788 } else if (nh
->vrf_id
!= bgp
->vrf_id
) {
2790 struct interface
*ifp
;
2792 vrf
= vrf_lookup_by_id(nh
->vrf_id
);
2795 /* create default route with interface <VRF>
2796 * with nexthop-vrf <VRF>
2798 ifp
= if_lookup_by_name_all_vrf(vrf
->name
);
2801 api_nh
->vrf_id
= nh
->vrf_id
;
2802 api_nh
->type
= NEXTHOP_TYPE_IFINDEX
;
2803 api_nh
->ifindex
= ifp
->ifindex
;
2804 if (BGP_DEBUG(zebra
, ZEBRA
))
2805 zlog_info("BGP: %s default route to %s table %d (redirect VRF)",
2806 announce
? "adding" : "withdrawing",
2807 vrf
->name
, table_id
);
2808 zclient_route_send(announce
? ZEBRA_ROUTE_ADD
2809 : ZEBRA_ROUTE_DELETE
,