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"
41 #include "bgpd/bgpd.h"
42 #include "bgpd/bgp_route.h"
43 #include "bgpd/bgp_attr.h"
44 #include "bgpd/bgp_nexthop.h"
45 #include "bgpd/bgp_zebra.h"
46 #include "bgpd/bgp_fsm.h"
47 #include "bgpd/bgp_debug.h"
48 #include "bgpd/bgp_errors.h"
49 #include "bgpd/bgp_mpath.h"
50 #include "bgpd/bgp_nexthop.h"
51 #include "bgpd/bgp_nht.h"
52 #include "bgpd/bgp_bfd.h"
53 #include "bgpd/bgp_label.h"
55 #include "bgpd/rfapi/rfapi_backend.h"
56 #include "bgpd/rfapi/vnc_export_bgp.h"
58 #include "bgpd/bgp_evpn.h"
59 #include "bgpd/bgp_mplsvpn.h"
60 #include "bgpd/bgp_labelpool.h"
61 #include "bgpd/bgp_pbr.h"
62 #include "bgpd/bgp_evpn_private.h"
63 #include "bgpd/bgp_evpn_mh.h"
64 #include "bgpd/bgp_mac.h"
66 /* All information about zebra. */
67 struct zclient
*zclient
= NULL
;
69 /* Can we install into zebra? */
70 static inline bool bgp_install_info_to_zebra(struct bgp
*bgp
)
72 if (zclient
->sock
<= 0)
75 if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp
)) {
77 "%s: No zebra instance to talk to, not installing information",
85 int zclient_num_connects
;
87 /* Router-id update message from zebra. */
88 static int bgp_router_id_update(ZAPI_CALLBACK_ARGS
)
90 struct prefix router_id
;
92 zebra_router_id_update_read(zclient
->ibuf
, &router_id
);
94 if (BGP_DEBUG(zebra
, ZEBRA
))
95 zlog_debug("Rx Router Id update VRF %u Id %pFX", vrf_id
,
98 bgp_router_id_zebra_bump(vrf_id
, &router_id
);
102 /* Nexthop update message from zebra. */
103 static int bgp_read_nexthop_update(ZAPI_CALLBACK_ARGS
)
105 bgp_parse_nexthop_update(cmd
, vrf_id
);
109 static int bgp_read_import_check_update(ZAPI_CALLBACK_ARGS
)
111 bgp_parse_nexthop_update(cmd
, vrf_id
);
115 /* Set or clear interface on which unnumbered neighbor is configured. This
116 * would in turn cause BGP to initiate or turn off IPv6 RAs on this
119 static void bgp_update_interface_nbrs(struct bgp
*bgp
, struct interface
*ifp
,
120 struct interface
*upd_ifp
)
122 struct listnode
*node
, *nnode
;
125 for (ALL_LIST_ELEMENTS(bgp
->peer
, node
, nnode
, peer
)) {
126 if (peer
->conf_if
&& (strcmp(peer
->conf_if
, ifp
->name
) == 0)) {
129 bgp_zebra_initiate_radv(bgp
, peer
);
131 bgp_zebra_terminate_radv(bgp
, peer
);
138 static int bgp_read_fec_update(int command
, struct zclient
*zclient
,
141 bgp_parse_fec_update();
145 static void bgp_start_interface_nbrs(struct bgp
*bgp
, struct interface
*ifp
)
147 struct listnode
*node
, *nnode
;
150 for (ALL_LIST_ELEMENTS(bgp
->peer
, node
, nnode
, peer
)) {
151 if (peer
->conf_if
&& (strcmp(peer
->conf_if
, ifp
->name
) == 0)
152 && peer
->status
!= Established
) {
153 if (peer_active(peer
))
154 BGP_EVENT_ADD(peer
, BGP_Stop
);
155 BGP_EVENT_ADD(peer
, BGP_Start
);
160 static void bgp_nbr_connected_add(struct bgp
*bgp
, struct nbr_connected
*ifc
)
162 struct listnode
*node
;
163 struct connected
*connected
;
164 struct interface
*ifp
;
167 /* Kick-off the FSM for any relevant peers only if there is a
168 * valid local address on the interface.
171 for (ALL_LIST_ELEMENTS_RO(ifp
->connected
, node
, connected
)) {
172 p
= connected
->address
;
173 if (p
->family
== AF_INET6
174 && IN6_IS_ADDR_LINKLOCAL(&p
->u
.prefix6
))
180 bgp_start_interface_nbrs(bgp
, ifp
);
183 static void bgp_nbr_connected_delete(struct bgp
*bgp
, struct nbr_connected
*ifc
,
186 struct listnode
*node
, *nnode
;
188 struct interface
*ifp
;
190 for (ALL_LIST_ELEMENTS(bgp
->peer
, node
, nnode
, peer
)) {
192 && (strcmp(peer
->conf_if
, ifc
->ifp
->name
) == 0)) {
193 peer
->last_reset
= PEER_DOWN_NBR_ADDR_DEL
;
194 BGP_EVENT_ADD(peer
, BGP_Stop
);
197 /* Free neighbor also, if we're asked to. */
200 listnode_delete(ifp
->nbr_connected
, ifc
);
201 nbr_connected_free(ifc
);
205 static int bgp_ifp_destroy(struct interface
*ifp
)
209 bgp
= bgp_lookup_by_vrf_id(ifp
->vrf_id
);
211 if (BGP_DEBUG(zebra
, ZEBRA
))
212 zlog_debug("Rx Intf del VRF %u IF %s", ifp
->vrf_id
, ifp
->name
);
215 bgp_update_interface_nbrs(bgp
, ifp
, NULL
);
217 bgp_mac_del_mac_entry(ifp
);
222 static int bgp_ifp_up(struct interface
*ifp
)
225 struct nbr_connected
*nc
;
226 struct listnode
*node
, *nnode
;
229 bgp
= bgp_lookup_by_vrf_id(ifp
->vrf_id
);
231 bgp_mac_add_mac_entry(ifp
);
233 if (BGP_DEBUG(zebra
, ZEBRA
))
234 zlog_debug("Rx Intf up VRF %u IF %s", ifp
->vrf_id
, ifp
->name
);
239 for (ALL_LIST_ELEMENTS(ifp
->connected
, node
, nnode
, c
))
240 bgp_connected_add(bgp
, c
);
242 for (ALL_LIST_ELEMENTS(ifp
->nbr_connected
, node
, nnode
, nc
))
243 bgp_nbr_connected_add(bgp
, nc
);
248 static int bgp_ifp_down(struct interface
*ifp
)
251 struct nbr_connected
*nc
;
252 struct listnode
*node
, *nnode
;
256 bgp
= bgp_lookup_by_vrf_id(ifp
->vrf_id
);
258 bgp_mac_del_mac_entry(ifp
);
260 if (BGP_DEBUG(zebra
, ZEBRA
))
261 zlog_debug("Rx Intf down VRF %u IF %s", ifp
->vrf_id
, ifp
->name
);
266 for (ALL_LIST_ELEMENTS(ifp
->connected
, node
, nnode
, c
))
267 bgp_connected_delete(bgp
, c
);
269 for (ALL_LIST_ELEMENTS(ifp
->nbr_connected
, node
, nnode
, nc
))
270 bgp_nbr_connected_delete(bgp
, nc
, 1);
272 /* Fast external-failover */
273 if (!CHECK_FLAG(bgp
->flags
, BGP_FLAG_NO_FAST_EXT_FAILOVER
)) {
275 for (ALL_LIST_ELEMENTS(bgp
->peer
, node
, nnode
, peer
)) {
276 #if defined(HAVE_CUMULUS)
277 /* Take down directly connected EBGP peers as well as
279 * tracked (directly connected) IBGP peers.
281 if ((peer
->ttl
!= BGP_DEFAULT_TTL
)
282 && (peer
->gtsm_hops
!= BGP_GTSM_HOPS_CONNECTED
)
284 || bgp_bfd_is_peer_multihop(peer
)))
286 /* Take down directly connected EBGP peers */
287 if ((peer
->ttl
!= BGP_DEFAULT_TTL
)
288 && (peer
->gtsm_hops
!= BGP_GTSM_HOPS_CONNECTED
))
292 if (ifp
== peer
->nexthop
.ifp
) {
293 BGP_EVENT_ADD(peer
, BGP_Stop
);
294 peer
->last_reset
= PEER_DOWN_IF_DOWN
;
302 static int bgp_interface_address_add(ZAPI_CALLBACK_ARGS
)
304 struct connected
*ifc
;
307 bgp
= bgp_lookup_by_vrf_id(vrf_id
);
309 ifc
= zebra_interface_address_read(cmd
, zclient
->ibuf
, vrf_id
);
314 if (bgp_debug_zebra(ifc
->address
))
315 zlog_debug("Rx Intf address add VRF %u IF %s addr %pFX", vrf_id
,
316 ifc
->ifp
->name
, ifc
->address
);
321 if (if_is_operative(ifc
->ifp
)) {
322 bgp_connected_add(bgp
, ifc
);
324 /* If we have learnt of any neighbors on this interface,
325 * check to kick off any BGP interface-based neighbors,
326 * but only if this is a link-local address.
328 if (IN6_IS_ADDR_LINKLOCAL(&ifc
->address
->u
.prefix6
)
329 && !list_isempty(ifc
->ifp
->nbr_connected
))
330 bgp_start_interface_nbrs(bgp
, ifc
->ifp
);
336 static int bgp_interface_address_delete(ZAPI_CALLBACK_ARGS
)
338 struct connected
*ifc
;
341 bgp
= bgp_lookup_by_vrf_id(vrf_id
);
343 ifc
= zebra_interface_address_read(cmd
, zclient
->ibuf
, vrf_id
);
348 if (bgp_debug_zebra(ifc
->address
))
349 zlog_debug("Rx Intf address del VRF %u IF %s addr %pFX", vrf_id
,
350 ifc
->ifp
->name
, ifc
->address
);
352 if (bgp
&& if_is_operative(ifc
->ifp
)) {
353 bgp_connected_delete(bgp
, ifc
);
356 connected_free(&ifc
);
361 static int bgp_interface_nbr_address_add(ZAPI_CALLBACK_ARGS
)
363 struct nbr_connected
*ifc
= NULL
;
366 ifc
= zebra_interface_nbr_address_read(cmd
, zclient
->ibuf
, vrf_id
);
371 if (bgp_debug_zebra(ifc
->address
))
372 zlog_debug("Rx Intf neighbor add VRF %u IF %s addr %pFX",
373 vrf_id
, ifc
->ifp
->name
, ifc
->address
);
375 if (if_is_operative(ifc
->ifp
)) {
376 bgp
= bgp_lookup_by_vrf_id(vrf_id
);
378 bgp_nbr_connected_add(bgp
, ifc
);
384 static int bgp_interface_nbr_address_delete(ZAPI_CALLBACK_ARGS
)
386 struct nbr_connected
*ifc
= NULL
;
389 ifc
= zebra_interface_nbr_address_read(cmd
, zclient
->ibuf
, vrf_id
);
394 if (bgp_debug_zebra(ifc
->address
))
395 zlog_debug("Rx Intf neighbor del VRF %u IF %s addr %pFX",
396 vrf_id
, ifc
->ifp
->name
, ifc
->address
);
398 if (if_is_operative(ifc
->ifp
)) {
399 bgp
= bgp_lookup_by_vrf_id(vrf_id
);
401 bgp_nbr_connected_delete(bgp
, ifc
, 0);
404 nbr_connected_free(ifc
);
409 /* VRF update for an interface. */
410 static int bgp_interface_vrf_update(ZAPI_CALLBACK_ARGS
)
412 struct interface
*ifp
;
415 struct nbr_connected
*nc
;
416 struct listnode
*node
, *nnode
;
420 ifp
= zebra_interface_vrf_update_read(zclient
->ibuf
, vrf_id
,
425 if (BGP_DEBUG(zebra
, ZEBRA
) && ifp
)
426 zlog_debug("Rx Intf VRF change VRF %u IF %s NewVRF %u", vrf_id
,
427 ifp
->name
, new_vrf_id
);
429 bgp
= bgp_lookup_by_vrf_id(vrf_id
);
432 for (ALL_LIST_ELEMENTS(ifp
->connected
, node
, nnode
, c
))
433 bgp_connected_delete(bgp
, c
);
435 for (ALL_LIST_ELEMENTS(ifp
->nbr_connected
, node
, nnode
, nc
))
436 bgp_nbr_connected_delete(bgp
, nc
, 1);
438 /* Fast external-failover */
439 if (!CHECK_FLAG(bgp
->flags
, BGP_FLAG_NO_FAST_EXT_FAILOVER
)) {
440 for (ALL_LIST_ELEMENTS(bgp
->peer
, node
, nnode
, peer
)) {
441 if ((peer
->ttl
!= BGP_DEFAULT_TTL
)
443 != BGP_GTSM_HOPS_CONNECTED
))
446 if (ifp
== peer
->nexthop
.ifp
)
447 BGP_EVENT_ADD(peer
, BGP_Stop
);
452 if_update_to_new_vrf(ifp
, new_vrf_id
);
454 bgp
= bgp_lookup_by_vrf_id(new_vrf_id
);
458 for (ALL_LIST_ELEMENTS(ifp
->connected
, node
, nnode
, c
))
459 bgp_connected_add(bgp
, c
);
461 for (ALL_LIST_ELEMENTS(ifp
->nbr_connected
, node
, nnode
, nc
))
462 bgp_nbr_connected_add(bgp
, nc
);
466 /* Zebra route add and delete treatment. */
467 static int zebra_read_route(ZAPI_CALLBACK_ARGS
)
469 enum nexthop_types_t nhtype
;
470 struct zapi_route api
;
471 union g_addr nexthop
;
476 bgp
= bgp_lookup_by_vrf_id(vrf_id
);
480 if (zapi_route_decode(zclient
->ibuf
, &api
) < 0)
483 /* we completely ignore srcdest routes for now. */
484 if (CHECK_FLAG(api
.message
, ZAPI_MESSAGE_SRCPFX
))
487 /* ignore link-local address. */
488 if (api
.prefix
.family
== AF_INET6
489 && IN6_IS_ADDR_LINKLOCAL(&api
.prefix
.u
.prefix6
))
492 nexthop
= api
.nexthops
[0].gate
;
493 ifindex
= api
.nexthops
[0].ifindex
;
494 nhtype
= api
.nexthops
[0].type
;
496 add
= (cmd
== ZEBRA_REDISTRIBUTE_ROUTE_ADD
);
499 * The ADD message is actually an UPDATE and there is no
501 * for a prior redistributed route, if any. So, perform an
503 * DEL processing for the same redistributed route from any
507 for (i
= 0; i
< ZEBRA_ROUTE_MAX
; i
++) {
509 bgp_redistribute_delete(bgp
, &api
.prefix
, i
,
513 /* Now perform the add/update. */
514 bgp_redistribute_add(bgp
, &api
.prefix
, &nexthop
, ifindex
,
515 nhtype
, api
.metric
, api
.type
, api
.instance
,
518 bgp_redistribute_delete(bgp
, &api
.prefix
, api
.type
,
522 if (bgp_debug_zebra(&api
.prefix
)) {
523 char buf
[PREFIX_STRLEN
];
526 inet_ntop(api
.prefix
.family
, &nexthop
, buf
,
529 "Rx route ADD VRF %u %s[%d] %pFX nexthop %s (type %d if %u) metric %u tag %" ROUTE_TAG_PRI
,
530 vrf_id
, zebra_route_string(api
.type
),
531 api
.instance
, &api
.prefix
, buf
, nhtype
, ifindex
,
532 api
.metric
, api
.tag
);
534 zlog_debug("Rx route DEL VRF %u %s[%d] %s", vrf_id
,
535 zebra_route_string(api
.type
), api
.instance
,
543 struct interface
*if_lookup_by_ipv4(struct in_addr
*addr
, vrf_id_t vrf_id
)
546 struct listnode
*cnode
;
547 struct interface
*ifp
;
548 struct connected
*connected
;
549 struct prefix_ipv4 p
;
552 vrf
= vrf_lookup_by_id(vrf_id
);
558 p
.prefixlen
= IPV4_MAX_BITLEN
;
560 FOR_ALL_INTERFACES (vrf
, ifp
) {
561 for (ALL_LIST_ELEMENTS_RO(ifp
->connected
, cnode
, connected
)) {
562 cp
= connected
->address
;
564 if (cp
->family
== AF_INET
)
565 if (prefix_match(cp
, (struct prefix
*)&p
))
572 struct interface
*if_lookup_by_ipv4_exact(struct in_addr
*addr
, vrf_id_t vrf_id
)
575 struct listnode
*cnode
;
576 struct interface
*ifp
;
577 struct connected
*connected
;
580 vrf
= vrf_lookup_by_id(vrf_id
);
584 FOR_ALL_INTERFACES (vrf
, ifp
) {
585 for (ALL_LIST_ELEMENTS_RO(ifp
->connected
, cnode
, connected
)) {
586 cp
= connected
->address
;
588 if (cp
->family
== AF_INET
)
589 if (IPV4_ADDR_SAME(&cp
->u
.prefix4
, addr
))
596 struct interface
*if_lookup_by_ipv6(struct in6_addr
*addr
, ifindex_t ifindex
,
600 struct listnode
*cnode
;
601 struct interface
*ifp
;
602 struct connected
*connected
;
603 struct prefix_ipv6 p
;
606 vrf
= vrf_lookup_by_id(vrf_id
);
612 p
.prefixlen
= IPV6_MAX_BITLEN
;
614 FOR_ALL_INTERFACES (vrf
, ifp
) {
615 for (ALL_LIST_ELEMENTS_RO(ifp
->connected
, cnode
, connected
)) {
616 cp
= connected
->address
;
618 if (cp
->family
== AF_INET6
)
619 if (prefix_match(cp
, (struct prefix
*)&p
)) {
620 if (IN6_IS_ADDR_LINKLOCAL(
622 if (ifindex
== ifp
->ifindex
)
632 struct interface
*if_lookup_by_ipv6_exact(struct in6_addr
*addr
,
633 ifindex_t ifindex
, vrf_id_t vrf_id
)
636 struct listnode
*cnode
;
637 struct interface
*ifp
;
638 struct connected
*connected
;
641 vrf
= vrf_lookup_by_id(vrf_id
);
645 FOR_ALL_INTERFACES (vrf
, ifp
) {
646 for (ALL_LIST_ELEMENTS_RO(ifp
->connected
, cnode
, connected
)) {
647 cp
= connected
->address
;
649 if (cp
->family
== AF_INET6
)
650 if (IPV6_ADDR_SAME(&cp
->u
.prefix6
, addr
)) {
651 if (IN6_IS_ADDR_LINKLOCAL(
653 if (ifindex
== ifp
->ifindex
)
663 static int if_get_ipv6_global(struct interface
*ifp
, struct in6_addr
*addr
)
665 struct listnode
*cnode
;
666 struct connected
*connected
;
669 for (ALL_LIST_ELEMENTS_RO(ifp
->connected
, cnode
, connected
)) {
670 cp
= connected
->address
;
672 if (cp
->family
== AF_INET6
)
673 if (!IN6_IS_ADDR_LINKLOCAL(&cp
->u
.prefix6
)) {
674 memcpy(addr
, &cp
->u
.prefix6
, IPV6_MAX_BYTELEN
);
681 static int if_get_ipv6_local(struct interface
*ifp
, struct in6_addr
*addr
)
683 struct listnode
*cnode
;
684 struct connected
*connected
;
687 for (ALL_LIST_ELEMENTS_RO(ifp
->connected
, cnode
, connected
)) {
688 cp
= connected
->address
;
690 if (cp
->family
== AF_INET6
)
691 if (IN6_IS_ADDR_LINKLOCAL(&cp
->u
.prefix6
)) {
692 memcpy(addr
, &cp
->u
.prefix6
, IPV6_MAX_BYTELEN
);
699 static int if_get_ipv4_address(struct interface
*ifp
, struct in_addr
*addr
)
701 struct listnode
*cnode
;
702 struct connected
*connected
;
705 for (ALL_LIST_ELEMENTS_RO(ifp
->connected
, cnode
, connected
)) {
706 cp
= connected
->address
;
707 if ((cp
->family
== AF_INET
)
708 && !ipv4_martian(&(cp
->u
.prefix4
))) {
709 *addr
= cp
->u
.prefix4
;
717 bool bgp_zebra_nexthop_set(union sockunion
*local
, union sockunion
*remote
,
718 struct bgp_nexthop
*nexthop
, struct peer
*peer
)
721 struct interface
*ifp
= NULL
;
723 memset(nexthop
, 0, sizeof(struct bgp_nexthop
));
730 if (local
->sa
.sa_family
== AF_INET
) {
731 nexthop
->v4
= local
->sin
.sin_addr
;
733 ifp
= if_lookup_by_name(peer
->update_if
,
736 ifp
= if_lookup_by_ipv4_exact(&local
->sin
.sin_addr
,
739 if (local
->sa
.sa_family
== AF_INET6
) {
740 memcpy(&nexthop
->v6_global
, &local
->sin6
.sin6_addr
, IPV6_MAX_BYTELEN
);
741 if (IN6_IS_ADDR_LINKLOCAL(&local
->sin6
.sin6_addr
)) {
742 if (peer
->conf_if
|| peer
->ifname
)
743 ifp
= if_lookup_by_name(peer
->conf_if
747 } else if (peer
->update_if
)
748 ifp
= if_lookup_by_name(peer
->update_if
,
751 ifp
= if_lookup_by_ipv6_exact(&local
->sin6
.sin6_addr
,
752 local
->sin6
.sin6_scope_id
,
758 * BGP views do not currently get proper data
759 * from zebra( when attached ) to be able to
760 * properly resolve nexthops, so give this
761 * instance type a pass.
763 if (peer
->bgp
->inst_type
== BGP_INSTANCE_TYPE_VIEW
)
766 * If we have no interface data but we have established
767 * some connection w/ zebra than something has gone
768 * terribly terribly wrong here, so say this failed
769 * If we do not any zebra connection then not
770 * having a ifp pointer is ok.
772 return zclient_num_connects
? false : true;
777 /* IPv4 connection, fetch and store IPv6 local address(es) if any. */
778 if (local
->sa
.sa_family
== AF_INET
) {
780 ret
= if_get_ipv6_global(ifp
, &nexthop
->v6_global
);
783 /* There is no global nexthop. Use link-local address as
785 * global and link-local nexthop. In this scenario, the
787 * for interop is that the network admin would use a
789 * specify the global IPv6 nexthop.
791 if_get_ipv6_local(ifp
, &nexthop
->v6_global
);
792 memcpy(&nexthop
->v6_local
, &nexthop
->v6_global
,
795 if_get_ipv6_local(ifp
, &nexthop
->v6_local
);
797 if (if_lookup_by_ipv4(&remote
->sin
.sin_addr
, peer
->bgp
->vrf_id
))
798 peer
->shared_network
= 1;
800 peer
->shared_network
= 0;
803 /* IPv6 connection, fetch and store IPv4 local address if any. */
804 if (local
->sa
.sa_family
== AF_INET6
) {
805 struct interface
*direct
= NULL
;
808 ret
= if_get_ipv4_address(ifp
, &nexthop
->v4
);
809 if (!ret
&& peer
->local_id
.s_addr
!= INADDR_ANY
)
810 nexthop
->v4
= peer
->local_id
;
813 if (!IN6_IS_ADDR_LINKLOCAL(&local
->sin6
.sin6_addr
)) {
814 memcpy(&nexthop
->v6_global
, &local
->sin6
.sin6_addr
,
817 /* If directory connected set link-local address. */
818 direct
= if_lookup_by_ipv6(&remote
->sin6
.sin6_addr
,
819 remote
->sin6
.sin6_scope_id
,
822 if_get_ipv6_local(ifp
, &nexthop
->v6_local
);
824 /* Link-local address. */
826 ret
= if_get_ipv6_global(ifp
, &nexthop
->v6_global
);
828 /* If there is no global address. Set link-local
830 global. I know this break RFC specification... */
831 /* In this scenario, the expectation for interop is that
833 * network admin would use a route-map to specify the
838 memcpy(&nexthop
->v6_global
,
839 &local
->sin6
.sin6_addr
,
841 /* Always set the link-local address */
842 memcpy(&nexthop
->v6_local
, &local
->sin6
.sin6_addr
,
846 if (IN6_IS_ADDR_LINKLOCAL(&local
->sin6
.sin6_addr
)
847 || if_lookup_by_ipv6(&remote
->sin6
.sin6_addr
,
848 remote
->sin6
.sin6_scope_id
,
850 peer
->shared_network
= 1;
852 peer
->shared_network
= 0;
855 /* KAME stack specific treatment. */
857 if (IN6_IS_ADDR_LINKLOCAL(&nexthop
->v6_global
)
858 && IN6_LINKLOCAL_IFINDEX(nexthop
->v6_global
)) {
859 SET_IN6_LINKLOCAL_IFINDEX(nexthop
->v6_global
, 0);
861 if (IN6_IS_ADDR_LINKLOCAL(&nexthop
->v6_local
)
862 && IN6_LINKLOCAL_IFINDEX(nexthop
->v6_local
)) {
863 SET_IN6_LINKLOCAL_IFINDEX(nexthop
->v6_local
, 0);
867 /* If we have identified the local interface, there is no error for now.
872 static struct in6_addr
*
873 bgp_path_info_to_ipv6_nexthop(struct bgp_path_info
*path
, ifindex_t
*ifindex
)
875 struct in6_addr
*nexthop
= NULL
;
877 /* Only global address nexthop exists. */
878 if (path
->attr
->mp_nexthop_len
== BGP_ATTR_NHLEN_IPV6_GLOBAL
879 || path
->attr
->mp_nexthop_len
== BGP_ATTR_NHLEN_VPNV6_GLOBAL
) {
880 nexthop
= &path
->attr
->mp_nexthop_global
;
881 if (IN6_IS_ADDR_LINKLOCAL(nexthop
))
882 *ifindex
= path
->attr
->nh_ifindex
;
885 /* If both global and link-local address present. */
886 if (path
->attr
->mp_nexthop_len
== BGP_ATTR_NHLEN_IPV6_GLOBAL_AND_LL
887 || path
->attr
->mp_nexthop_len
888 == BGP_ATTR_NHLEN_VPNV6_GLOBAL_AND_LL
) {
889 /* Check if route-map is set to prefer global over link-local */
890 if (path
->attr
->mp_nexthop_prefer_global
) {
891 nexthop
= &path
->attr
->mp_nexthop_global
;
892 if (IN6_IS_ADDR_LINKLOCAL(nexthop
))
893 *ifindex
= path
->attr
->nh_ifindex
;
895 /* Workaround for Cisco's nexthop bug. */
896 if (IN6_IS_ADDR_UNSPECIFIED(
897 &path
->attr
->mp_nexthop_global
)
898 && path
->peer
->su_remote
->sa
.sa_family
901 &path
->peer
->su_remote
->sin6
.sin6_addr
;
902 if (IN6_IS_ADDR_LINKLOCAL(nexthop
))
903 *ifindex
= path
->peer
->nexthop
.ifp
906 nexthop
= &path
->attr
->mp_nexthop_local
;
907 if (IN6_IS_ADDR_LINKLOCAL(nexthop
))
908 *ifindex
= path
->attr
->nh_lla_ifindex
;
916 static bool bgp_table_map_apply(struct route_map
*map
, const struct prefix
*p
,
917 struct bgp_path_info
*path
)
919 route_map_result_t ret
;
921 ret
= route_map_apply(map
, p
, RMAP_BGP
, path
);
922 bgp_attr_flush(path
->attr
);
924 if (ret
!= RMAP_DENYMATCH
)
927 if (bgp_debug_zebra(p
)) {
928 if (p
->family
== AF_INET
) {
929 char buf
[2][INET_ADDRSTRLEN
];
931 "Zebra rmap deny: IPv4 route %pFX nexthop %s",
933 inet_ntop(AF_INET
, &path
->attr
->nexthop
, buf
[1],
936 if (p
->family
== AF_INET6
) {
937 char buf
[2][INET6_ADDRSTRLEN
];
939 struct in6_addr
*nexthop
;
941 nexthop
= bgp_path_info_to_ipv6_nexthop(path
, &ifindex
);
943 "Zebra rmap deny: IPv6 route %pFX nexthop %s",
945 inet_ntop(AF_INET6
, nexthop
, buf
[1],
952 static struct thread
*bgp_tm_thread_connect
;
953 static bool bgp_tm_status_connected
;
954 static bool bgp_tm_chunk_obtained
;
955 #define BGP_FLOWSPEC_TABLE_CHUNK 100000
956 static uint32_t bgp_tm_min
, bgp_tm_max
, bgp_tm_chunk_size
;
957 struct bgp
*bgp_tm_bgp
;
959 static int bgp_zebra_tm_connect(struct thread
*t
)
961 struct zclient
*zclient
;
962 int delay
= 10, ret
= 0;
964 zclient
= THREAD_ARG(t
);
965 if (bgp_tm_status_connected
&& zclient
->sock
> 0)
968 bgp_tm_status_connected
= false;
969 ret
= tm_table_manager_connect(zclient
);
972 zlog_info("Error connecting to table manager!");
973 bgp_tm_status_connected
= false;
975 if (!bgp_tm_status_connected
)
976 zlog_debug("Connecting to table manager. Success");
977 bgp_tm_status_connected
= true;
978 if (!bgp_tm_chunk_obtained
) {
979 if (bgp_zebra_get_table_range(bgp_tm_chunk_size
,
982 bgp_tm_chunk_obtained
= true;
983 /* parse non installed entries */
984 bgp_zebra_announce_table(bgp_tm_bgp
, AFI_IP
, SAFI_FLOWSPEC
);
988 thread_add_timer(bm
->master
, bgp_zebra_tm_connect
, zclient
, delay
,
989 &bgp_tm_thread_connect
);
993 bool bgp_zebra_tm_chunk_obtained(void)
995 return bgp_tm_chunk_obtained
;
998 uint32_t bgp_zebra_tm_get_id(void)
1000 static int table_id
;
1002 if (!bgp_tm_chunk_obtained
)
1004 return bgp_tm_min
++;
1007 void bgp_zebra_init_tm_connect(struct bgp
*bgp
)
1011 /* if already set, do nothing
1013 if (bgp_tm_thread_connect
!= NULL
)
1015 bgp_tm_status_connected
= false;
1016 bgp_tm_chunk_obtained
= false;
1017 bgp_tm_min
= bgp_tm_max
= 0;
1018 bgp_tm_chunk_size
= BGP_FLOWSPEC_TABLE_CHUNK
;
1020 thread_add_timer(bm
->master
, bgp_zebra_tm_connect
, zclient
, delay
,
1021 &bgp_tm_thread_connect
);
1024 int bgp_zebra_get_table_range(uint32_t chunk_size
,
1025 uint32_t *start
, uint32_t *end
)
1029 if (!bgp_tm_status_connected
)
1031 ret
= tm_get_table_chunk(zclient
, chunk_size
, start
, end
);
1033 flog_err(EC_BGP_TABLE_CHUNK
,
1034 "BGP: Error getting table chunk %u", chunk_size
);
1037 zlog_info("BGP: Table Manager returns range from chunk %u is [%u %u]",
1038 chunk_size
, *start
, *end
);
1042 static bool update_ipv4nh_for_route_install(int nh_othervrf
, struct bgp
*nh_bgp
,
1043 struct in_addr
*nexthop
,
1044 struct attr
*attr
, bool is_evpn
,
1045 struct zapi_nexthop
*api_nh
)
1047 api_nh
->gate
.ipv4
= *nexthop
;
1048 api_nh
->vrf_id
= nh_bgp
->vrf_id
;
1050 /* Need to set fields appropriately for EVPN routes imported into
1051 * a VRF (which are programmed as onlink on l3-vni SVI) as well as
1052 * connected routes leaked into a VRF.
1055 api_nh
->type
= NEXTHOP_TYPE_IPV4_IFINDEX
;
1056 SET_FLAG(api_nh
->flags
, ZAPI_NEXTHOP_FLAG_ONLINK
);
1057 api_nh
->ifindex
= nh_bgp
->l3vni_svi_ifindex
;
1058 } else if (nh_othervrf
&&
1059 api_nh
->gate
.ipv4
.s_addr
== INADDR_ANY
) {
1060 api_nh
->type
= NEXTHOP_TYPE_IFINDEX
;
1061 api_nh
->ifindex
= attr
->nh_ifindex
;
1063 api_nh
->type
= NEXTHOP_TYPE_IPV4
;
1068 static bool update_ipv6nh_for_route_install(int nh_othervrf
, struct bgp
*nh_bgp
,
1069 struct in6_addr
*nexthop
,
1071 struct bgp_path_info
*pi
,
1072 struct bgp_path_info
*best_pi
,
1074 struct zapi_nexthop
*api_nh
)
1079 api_nh
->vrf_id
= nh_bgp
->vrf_id
;
1082 api_nh
->type
= NEXTHOP_TYPE_IPV6_IFINDEX
;
1083 SET_FLAG(api_nh
->flags
, ZAPI_NEXTHOP_FLAG_ONLINK
);
1084 api_nh
->ifindex
= nh_bgp
->l3vni_svi_ifindex
;
1085 } else if (nh_othervrf
) {
1086 if (IN6_IS_ADDR_UNSPECIFIED(nexthop
)) {
1087 api_nh
->type
= NEXTHOP_TYPE_IFINDEX
;
1088 api_nh
->ifindex
= attr
->nh_ifindex
;
1089 } else if (IN6_IS_ADDR_LINKLOCAL(nexthop
)) {
1092 api_nh
->type
= NEXTHOP_TYPE_IPV6_IFINDEX
;
1093 api_nh
->ifindex
= ifindex
;
1095 api_nh
->type
= NEXTHOP_TYPE_IPV6
;
1096 api_nh
->ifindex
= 0;
1099 if (IN6_IS_ADDR_LINKLOCAL(nexthop
)) {
1101 && attr
->mp_nexthop_len
1102 == BGP_ATTR_NHLEN_IPV6_GLOBAL_AND_LL
)
1103 if (pi
->peer
->nexthop
.ifp
)
1105 pi
->peer
->nexthop
.ifp
->ifindex
;
1107 if (pi
->peer
->conf_if
)
1108 ifindex
= pi
->peer
->ifp
->ifindex
;
1109 else if (pi
->peer
->ifname
)
1110 ifindex
= ifname2ifindex(
1112 pi
->peer
->bgp
->vrf_id
);
1113 else if (pi
->peer
->nexthop
.ifp
)
1115 pi
->peer
->nexthop
.ifp
->ifindex
;
1120 api_nh
->type
= NEXTHOP_TYPE_IPV6_IFINDEX
;
1121 api_nh
->ifindex
= ifindex
;
1123 api_nh
->type
= NEXTHOP_TYPE_IPV6
;
1124 api_nh
->ifindex
= 0;
1128 api_nh
->gate
.ipv6
= *nexthop
;
1133 static bool bgp_zebra_use_nhop_weighted(struct bgp
*bgp
, struct attr
*attr
,
1134 uint64_t tot_bw
, uint32_t *nh_weight
)
1140 /* zero link-bandwidth and link-bandwidth not present are treated
1141 * as the same situation.
1144 /* the only situations should be if we're either told
1145 * to skip or use default weight.
1147 if (bgp
->lb_handling
== BGP_LINK_BW_SKIP_MISSING
)
1149 *nh_weight
= BGP_ZEBRA_DEFAULT_NHOP_WEIGHT
;
1151 tmp
= (uint64_t)bw
* 100;
1152 *nh_weight
= ((uint32_t)(tmp
/ tot_bw
));
1158 void bgp_zebra_announce(struct bgp_dest
*dest
, const struct prefix
*p
,
1159 struct bgp_path_info
*info
, struct bgp
*bgp
, afi_t afi
,
1162 struct zapi_route api
= { 0 };
1163 struct zapi_nexthop
*api_nh
;
1165 unsigned int valid_nh_count
= 0;
1166 int has_valid_label
= 0;
1169 struct bgp_path_info
*mpinfo
;
1171 struct attr local_attr
;
1172 struct bgp_path_info local_info
;
1173 struct bgp_path_info
*mpinfo_cp
= &local_info
;
1176 int nh_othervrf
= 0;
1177 char buf_prefix
[PREFIX_STRLEN
]; /* filled in if we are debugging */
1181 uint64_t cum_bw
= 0;
1183 /* Don't try to install if we're not connected to Zebra or Zebra doesn't
1184 * know of this instance.
1186 if (!bgp_install_info_to_zebra(bgp
))
1189 if (bgp
->main_zebra_update_hold
)
1192 if (bgp_debug_zebra(p
))
1193 prefix2str(p
, buf_prefix
, sizeof(buf_prefix
));
1195 if (safi
== SAFI_FLOWSPEC
) {
1196 bgp_pbr_update_entry(bgp
, bgp_dest_get_prefix(dest
), info
, afi
,
1202 * vrf leaking support (will have only one nexthop)
1204 if (info
->extra
&& info
->extra
->bgp_orig
)
1207 /* Make Zebra API structure. */
1208 api
.vrf_id
= bgp
->vrf_id
;
1209 api
.type
= ZEBRA_ROUTE_BGP
;
1212 SET_FLAG(api
.message
, ZAPI_MESSAGE_NEXTHOP
);
1216 if (info
->type
== ZEBRA_ROUTE_BGP
1217 && info
->sub_type
== BGP_ROUTE_IMPORTED
) {
1219 /* Obtain peer from parent */
1220 if (info
->extra
&& info
->extra
->parent
)
1221 peer
= ((struct bgp_path_info
*)(info
->extra
->parent
))
1225 tag
= info
->attr
->tag
;
1227 /* If the route's source is EVPN, flag as such. */
1228 is_evpn
= is_route_parent_evpn(info
);
1230 SET_FLAG(api
.flags
, ZEBRA_FLAG_EVPN_ROUTE
);
1232 if (peer
->sort
== BGP_PEER_IBGP
|| peer
->sort
== BGP_PEER_CONFED
1233 || info
->sub_type
== BGP_ROUTE_AGGREGATE
) {
1234 SET_FLAG(api
.flags
, ZEBRA_FLAG_IBGP
);
1235 SET_FLAG(api
.flags
, ZEBRA_FLAG_ALLOW_RECURSION
);
1238 if ((peer
->sort
== BGP_PEER_EBGP
&& peer
->ttl
!= BGP_DEFAULT_TTL
)
1239 || CHECK_FLAG(peer
->flags
, PEER_FLAG_DISABLE_CONNECTED_CHECK
)
1240 || CHECK_FLAG(bgp
->flags
, BGP_FLAG_DISABLE_NH_CONNECTED_CHK
))
1242 SET_FLAG(api
.flags
, ZEBRA_FLAG_ALLOW_RECURSION
);
1244 if (info
->attr
->rmap_table_id
) {
1245 SET_FLAG(api
.message
, ZAPI_MESSAGE_TABLEID
);
1246 api
.tableid
= info
->attr
->rmap_table_id
;
1249 if (CHECK_FLAG(info
->attr
->flag
, ATTR_FLAG_BIT(BGP_ATTR_SRTE_COLOR
)))
1250 SET_FLAG(api
.message
, ZAPI_MESSAGE_SRTE
);
1252 /* Metric is currently based on the best-path only */
1253 metric
= info
->attr
->med
;
1255 /* Determine if we're doing weighted ECMP or not */
1256 do_wt_ecmp
= bgp_path_info_mpath_chkwtd(bgp
, info
);
1258 cum_bw
= bgp_path_info_mpath_cumbw(info
);
1260 for (mpinfo
= info
; mpinfo
; mpinfo
= bgp_path_info_mpath_next(mpinfo
)) {
1263 if (valid_nh_count
>= multipath_num
)
1266 *mpinfo_cp
= *mpinfo
;
1269 /* Get nexthop address-family */
1270 if (p
->family
== AF_INET
1271 && !BGP_ATTR_NEXTHOP_AFI_IP6(mpinfo_cp
->attr
))
1272 nh_family
= AF_INET
;
1273 else if (p
->family
== AF_INET6
1274 || (p
->family
== AF_INET
1275 && BGP_ATTR_NEXTHOP_AFI_IP6(mpinfo_cp
->attr
)))
1276 nh_family
= AF_INET6
;
1280 /* If processing for weighted ECMP, determine the next hop's
1281 * weight. Based on user setting, we may skip the next hop
1282 * in some situations.
1285 if (!bgp_zebra_use_nhop_weighted(bgp
, mpinfo
->attr
,
1286 cum_bw
, &nh_weight
))
1289 api_nh
= &api
.nexthops
[valid_nh_count
];
1291 if (CHECK_FLAG(info
->attr
->flag
,
1292 ATTR_FLAG_BIT(BGP_ATTR_SRTE_COLOR
)))
1293 api_nh
->srte_color
= info
->attr
->srte_color
;
1295 if (nh_family
== AF_INET
) {
1296 if (bgp_debug_zebra(&api
.prefix
)) {
1297 if (mpinfo
->extra
) {
1299 "%s: p=%s, bgp_is_valid_label: %d",
1300 __func__
, buf_prefix
,
1306 "%s: p=%s, extra is NULL, no label",
1307 __func__
, buf_prefix
);
1311 if (bgp
->table_map
[afi
][safi
].name
) {
1312 /* Copy info and attributes, so the route-map
1313 apply doesn't modify the BGP route info. */
1314 local_attr
= *mpinfo
->attr
;
1315 mpinfo_cp
->attr
= &local_attr
;
1318 if (bgp
->table_map
[afi
][safi
].name
) {
1319 if (!bgp_table_map_apply(
1320 bgp
->table_map
[afi
][safi
].map
, p
,
1324 /* metric/tag is only allowed to be
1325 * overridden on 1st nexthop */
1326 if (mpinfo
== info
) {
1327 metric
= mpinfo_cp
->attr
->med
;
1328 tag
= mpinfo_cp
->attr
->tag
;
1332 nh_updated
= update_ipv4nh_for_route_install(
1335 info
->extra
->bgp_orig
: bgp
,
1336 &mpinfo_cp
->attr
->nexthop
,
1337 mpinfo_cp
->attr
, is_evpn
, api_nh
);
1339 ifindex_t ifindex
= IFINDEX_INTERNAL
;
1340 struct in6_addr
*nexthop
;
1342 if (bgp
->table_map
[afi
][safi
].name
) {
1343 /* Copy info and attributes, so the route-map
1344 apply doesn't modify the BGP route info. */
1345 local_attr
= *mpinfo
->attr
;
1346 mpinfo_cp
->attr
= &local_attr
;
1349 if (bgp
->table_map
[afi
][safi
].name
) {
1350 /* Copy info and attributes, so the route-map
1351 apply doesn't modify the BGP route info. */
1352 local_attr
= *mpinfo
->attr
;
1353 mpinfo_cp
->attr
= &local_attr
;
1355 if (!bgp_table_map_apply(
1356 bgp
->table_map
[afi
][safi
].map
, p
,
1360 /* metric/tag is only allowed to be
1361 * overridden on 1st nexthop */
1362 if (mpinfo
== info
) {
1363 metric
= mpinfo_cp
->attr
->med
;
1364 tag
= mpinfo_cp
->attr
->tag
;
1367 nexthop
= bgp_path_info_to_ipv6_nexthop(mpinfo_cp
,
1369 nh_updated
= update_ipv6nh_for_route_install(
1370 nh_othervrf
, nh_othervrf
?
1371 info
->extra
->bgp_orig
: bgp
,
1373 mpinfo
, info
, is_evpn
, api_nh
);
1376 /* Did we get proper nexthop info to update zebra? */
1381 && bgp_is_valid_label(&mpinfo
->extra
->label
[0])
1382 && !CHECK_FLAG(api
.flags
, ZEBRA_FLAG_EVPN_ROUTE
)) {
1383 has_valid_label
= 1;
1384 label
= label_pton(&mpinfo
->extra
->label
[0]);
1386 SET_FLAG(api_nh
->flags
, ZAPI_NEXTHOP_FLAG_LABEL
);
1388 api_nh
->label_num
= 1;
1389 api_nh
->labels
[0] = label
;
1391 memcpy(&api_nh
->rmac
, &(mpinfo
->attr
->rmac
),
1392 sizeof(struct ethaddr
));
1393 api_nh
->weight
= nh_weight
;
1399 * When we create an aggregate route we must also
1400 * install a Null0 route in the RIB, so overwrite
1401 * what was written into api with a blackhole route
1403 if (info
->sub_type
== BGP_ROUTE_AGGREGATE
)
1404 zapi_route_set_blackhole(&api
, BLACKHOLE_NULL
);
1406 api
.nexthop_num
= valid_nh_count
;
1408 SET_FLAG(api
.message
, ZAPI_MESSAGE_METRIC
);
1409 api
.metric
= metric
;
1412 SET_FLAG(api
.message
, ZAPI_MESSAGE_TAG
);
1416 distance
= bgp_distance_apply(p
, info
, afi
, safi
, bgp
);
1418 SET_FLAG(api
.message
, ZAPI_MESSAGE_DISTANCE
);
1419 api
.distance
= distance
;
1422 if (bgp_debug_zebra(p
)) {
1423 char nh_buf
[INET6_ADDRSTRLEN
];
1424 char eth_buf
[ETHER_ADDR_STRLEN
+ 7] = {'\0'};
1425 char buf1
[ETHER_ADDR_STRLEN
];
1430 "Tx route %s VRF %u %pFX metric %u tag %" ROUTE_TAG_PRI
1432 valid_nh_count
? "add" : "delete", bgp
->vrf_id
,
1433 &api
.prefix
, api
.metric
, api
.tag
, api
.nexthop_num
);
1434 for (i
= 0; i
< api
.nexthop_num
; i
++) {
1435 api_nh
= &api
.nexthops
[i
];
1437 switch (api_nh
->type
) {
1438 case NEXTHOP_TYPE_IFINDEX
:
1441 case NEXTHOP_TYPE_IPV4
:
1442 case NEXTHOP_TYPE_IPV4_IFINDEX
:
1443 nh_family
= AF_INET
;
1444 inet_ntop(nh_family
, &api_nh
->gate
, nh_buf
,
1447 case NEXTHOP_TYPE_IPV6
:
1448 case NEXTHOP_TYPE_IPV6_IFINDEX
:
1449 nh_family
= AF_INET6
;
1450 inet_ntop(nh_family
, &api_nh
->gate
, nh_buf
,
1453 case NEXTHOP_TYPE_BLACKHOLE
:
1454 strlcpy(nh_buf
, "blackhole", sizeof(nh_buf
));
1457 /* Note: add new nexthop case */
1462 label_buf
[0] = '\0';
1465 && !CHECK_FLAG(api
.flags
, ZEBRA_FLAG_EVPN_ROUTE
))
1466 snprintf(label_buf
, sizeof(label_buf
),
1467 "label %u", api_nh
->labels
[0]);
1468 if (CHECK_FLAG(api
.flags
, ZEBRA_FLAG_EVPN_ROUTE
)
1469 && !is_zero_mac(&api_nh
->rmac
))
1470 snprintf(eth_buf
, sizeof(eth_buf
), " RMAC %s",
1471 prefix_mac2str(&api_nh
->rmac
,
1472 buf1
, sizeof(buf1
)));
1473 zlog_debug(" nhop [%d]: %s if %u VRF %u wt %u %s %s",
1474 i
+ 1, nh_buf
, api_nh
->ifindex
,
1475 api_nh
->vrf_id
, api_nh
->weight
,
1476 label_buf
, eth_buf
);
1480 if (bgp_debug_zebra(p
)) {
1481 int recursion_flag
= 0;
1483 if (CHECK_FLAG(api
.flags
, ZEBRA_FLAG_ALLOW_RECURSION
))
1486 zlog_debug("%s: %s: announcing to zebra (recursion %sset)",
1487 __func__
, buf_prefix
,
1488 (recursion_flag
? "" : "NOT "));
1490 zclient_route_send(valid_nh_count
? ZEBRA_ROUTE_ADD
1491 : ZEBRA_ROUTE_DELETE
,
1495 /* Announce all routes of a table to zebra */
1496 void bgp_zebra_announce_table(struct bgp
*bgp
, afi_t afi
, safi_t safi
)
1498 struct bgp_dest
*dest
;
1499 struct bgp_table
*table
;
1500 struct bgp_path_info
*pi
;
1502 /* Don't try to install if we're not connected to Zebra or Zebra doesn't
1503 * know of this instance.
1505 if (!bgp_install_info_to_zebra(bgp
))
1508 table
= bgp
->rib
[afi
][safi
];
1512 for (dest
= bgp_table_top(table
); dest
; dest
= bgp_route_next(dest
))
1513 for (pi
= bgp_dest_get_bgp_path_info(dest
); pi
; pi
= pi
->next
)
1514 if (CHECK_FLAG(pi
->flags
, BGP_PATH_SELECTED
) &&
1516 (pi
->type
== ZEBRA_ROUTE_BGP
1517 && (pi
->sub_type
== BGP_ROUTE_NORMAL
1518 || pi
->sub_type
== BGP_ROUTE_IMPORTED
)))
1520 bgp_zebra_announce(dest
,
1521 bgp_dest_get_prefix(dest
),
1522 pi
, bgp
, afi
, safi
);
1525 /* Announce routes of any bgp subtype of a table to zebra */
1526 void bgp_zebra_announce_table_all_subtypes(struct bgp
*bgp
, afi_t afi
,
1529 struct bgp_dest
*dest
;
1530 struct bgp_table
*table
;
1531 struct bgp_path_info
*pi
;
1533 if (!bgp_install_info_to_zebra(bgp
))
1536 table
= bgp
->rib
[afi
][safi
];
1540 for (dest
= bgp_table_top(table
); dest
; dest
= bgp_route_next(dest
))
1541 for (pi
= bgp_dest_get_bgp_path_info(dest
); pi
; pi
= pi
->next
)
1542 if (CHECK_FLAG(pi
->flags
, BGP_PATH_SELECTED
) &&
1543 pi
->type
== ZEBRA_ROUTE_BGP
)
1544 bgp_zebra_announce(dest
,
1545 bgp_dest_get_prefix(dest
),
1546 pi
, bgp
, afi
, safi
);
1549 void bgp_zebra_withdraw(const struct prefix
*p
, struct bgp_path_info
*info
,
1550 struct bgp
*bgp
, safi_t safi
)
1552 struct zapi_route api
;
1555 /* Don't try to install if we're not connected to Zebra or Zebra doesn't
1556 * know of this instance.
1558 if (!bgp_install_info_to_zebra(bgp
))
1561 if (safi
== SAFI_FLOWSPEC
) {
1563 bgp_pbr_update_entry(peer
->bgp
, p
, info
, AFI_IP
, safi
, false);
1567 memset(&api
, 0, sizeof(api
));
1568 api
.vrf_id
= bgp
->vrf_id
;
1569 api
.type
= ZEBRA_ROUTE_BGP
;
1573 if (info
->attr
->rmap_table_id
) {
1574 SET_FLAG(api
.message
, ZAPI_MESSAGE_TABLEID
);
1575 api
.tableid
= info
->attr
->rmap_table_id
;
1578 /* If the route's source is EVPN, flag as such. */
1579 if (is_route_parent_evpn(info
))
1580 SET_FLAG(api
.flags
, ZEBRA_FLAG_EVPN_ROUTE
);
1582 if (bgp_debug_zebra(p
))
1583 zlog_debug("Tx route delete VRF %u %pFX", bgp
->vrf_id
,
1586 zclient_route_send(ZEBRA_ROUTE_DELETE
, zclient
, &api
);
1589 /* Withdraw all entries in a BGP instances RIB table from Zebra */
1590 void bgp_zebra_withdraw_table_all_subtypes(struct bgp
*bgp
, afi_t afi
, safi_t safi
)
1592 struct bgp_dest
*dest
;
1593 struct bgp_table
*table
;
1594 struct bgp_path_info
*pi
;
1596 if (!bgp_install_info_to_zebra(bgp
))
1599 table
= bgp
->rib
[afi
][safi
];
1603 for (dest
= bgp_table_top(table
); dest
; dest
= bgp_route_next(dest
)) {
1604 for (pi
= bgp_dest_get_bgp_path_info(dest
); pi
; pi
= pi
->next
) {
1605 if (CHECK_FLAG(pi
->flags
, BGP_PATH_SELECTED
)
1606 && (pi
->type
== ZEBRA_ROUTE_BGP
))
1607 bgp_zebra_withdraw(bgp_dest_get_prefix(dest
),
1613 struct bgp_redist
*bgp_redist_lookup(struct bgp
*bgp
, afi_t afi
, uint8_t type
,
1614 unsigned short instance
)
1616 struct list
*red_list
;
1617 struct listnode
*node
;
1618 struct bgp_redist
*red
;
1620 red_list
= bgp
->redist
[afi
][type
];
1624 for (ALL_LIST_ELEMENTS_RO(red_list
, node
, red
))
1625 if (red
->instance
== instance
)
1631 struct bgp_redist
*bgp_redist_add(struct bgp
*bgp
, afi_t afi
, uint8_t type
,
1632 unsigned short instance
)
1634 struct list
*red_list
;
1635 struct bgp_redist
*red
;
1637 red
= bgp_redist_lookup(bgp
, afi
, type
, instance
);
1641 if (!bgp
->redist
[afi
][type
])
1642 bgp
->redist
[afi
][type
] = list_new();
1644 red_list
= bgp
->redist
[afi
][type
];
1645 red
= XCALLOC(MTYPE_BGP_REDIST
, sizeof(struct bgp_redist
));
1646 red
->instance
= instance
;
1648 listnode_add(red_list
, red
);
1653 static void bgp_redist_del(struct bgp
*bgp
, afi_t afi
, uint8_t type
,
1654 unsigned short instance
)
1656 struct bgp_redist
*red
;
1658 red
= bgp_redist_lookup(bgp
, afi
, type
, instance
);
1661 listnode_delete(bgp
->redist
[afi
][type
], red
);
1662 XFREE(MTYPE_BGP_REDIST
, red
);
1663 if (!bgp
->redist
[afi
][type
]->count
)
1664 list_delete(&bgp
->redist
[afi
][type
]);
1668 /* Other routes redistribution into BGP. */
1669 int bgp_redistribute_set(struct bgp
*bgp
, afi_t afi
, int type
,
1670 unsigned short instance
, bool changed
)
1672 /* If redistribute options are changed call
1673 * bgp_redistribute_unreg() to reset the option and withdraw
1677 bgp_redistribute_unreg(bgp
, afi
, type
, instance
);
1679 /* Return if already redistribute flag is set. */
1681 if (redist_check_instance(&zclient
->mi_redist
[afi
][type
],
1685 redist_add_instance(&zclient
->mi_redist
[afi
][type
], instance
);
1687 if (vrf_bitmap_check(zclient
->redist
[afi
][type
], bgp
->vrf_id
))
1690 #ifdef ENABLE_BGP_VNC
1691 if (EVPN_ENABLED(bgp
) && type
== ZEBRA_ROUTE_VNC_DIRECT
) {
1692 vnc_export_bgp_enable(
1693 bgp
, afi
); /* only enables if mode bits cfg'd */
1697 vrf_bitmap_set(zclient
->redist
[afi
][type
], bgp
->vrf_id
);
1701 * Don't try to register if we're not connected to Zebra or Zebra
1702 * doesn't know of this instance.
1704 * When we come up later well resend if needed.
1706 if (!bgp_install_info_to_zebra(bgp
))
1709 if (BGP_DEBUG(zebra
, ZEBRA
))
1710 zlog_debug("Tx redistribute add VRF %u afi %d %s %d",
1711 bgp
->vrf_id
, afi
, zebra_route_string(type
),
1714 /* Send distribute add message to zebra. */
1715 zebra_redistribute_send(ZEBRA_REDISTRIBUTE_ADD
, zclient
, afi
, type
,
1716 instance
, bgp
->vrf_id
);
1721 int bgp_redistribute_resend(struct bgp
*bgp
, afi_t afi
, int type
,
1722 unsigned short instance
)
1724 /* Don't try to send if we're not connected to Zebra or Zebra doesn't
1725 * know of this instance.
1727 if (!bgp_install_info_to_zebra(bgp
))
1730 if (BGP_DEBUG(zebra
, ZEBRA
))
1731 zlog_debug("Tx redistribute del/add VRF %u afi %d %s %d",
1732 bgp
->vrf_id
, afi
, zebra_route_string(type
),
1735 /* Send distribute add message to zebra. */
1736 zebra_redistribute_send(ZEBRA_REDISTRIBUTE_DELETE
, zclient
, afi
, type
,
1737 instance
, bgp
->vrf_id
);
1738 zebra_redistribute_send(ZEBRA_REDISTRIBUTE_ADD
, zclient
, afi
, type
,
1739 instance
, bgp
->vrf_id
);
1744 /* Redistribute with route-map specification. */
1745 bool bgp_redistribute_rmap_set(struct bgp_redist
*red
, const char *name
,
1746 struct route_map
*route_map
)
1748 if (red
->rmap
.name
&& (strcmp(red
->rmap
.name
, name
) == 0))
1751 XFREE(MTYPE_ROUTE_MAP_NAME
, red
->rmap
.name
);
1752 /* Decrement the count for existing routemap and
1753 * increment the count for new route map.
1755 route_map_counter_decrement(red
->rmap
.map
);
1756 red
->rmap
.name
= XSTRDUP(MTYPE_ROUTE_MAP_NAME
, name
);
1757 red
->rmap
.map
= route_map
;
1758 route_map_counter_increment(red
->rmap
.map
);
1763 /* Redistribute with metric specification. */
1764 bool bgp_redistribute_metric_set(struct bgp
*bgp
, struct bgp_redist
*red
,
1765 afi_t afi
, int type
, uint32_t metric
)
1767 struct bgp_dest
*dest
;
1768 struct bgp_path_info
*pi
;
1770 if (red
->redist_metric_flag
&& red
->redist_metric
== metric
)
1773 red
->redist_metric_flag
= 1;
1774 red
->redist_metric
= metric
;
1776 for (dest
= bgp_table_top(bgp
->rib
[afi
][SAFI_UNICAST
]); dest
;
1777 dest
= bgp_route_next(dest
)) {
1778 for (pi
= bgp_dest_get_bgp_path_info(dest
); pi
; pi
= pi
->next
) {
1779 if (pi
->sub_type
== BGP_ROUTE_REDISTRIBUTE
1781 && pi
->instance
== red
->instance
) {
1782 struct attr
*old_attr
;
1783 struct attr new_attr
;
1785 new_attr
= *pi
->attr
;
1786 new_attr
.med
= red
->redist_metric
;
1787 old_attr
= pi
->attr
;
1788 pi
->attr
= bgp_attr_intern(&new_attr
);
1789 bgp_attr_unintern(&old_attr
);
1791 bgp_path_info_set_flag(dest
, pi
,
1792 BGP_PATH_ATTR_CHANGED
);
1793 bgp_process(bgp
, dest
, afi
, SAFI_UNICAST
);
1801 /* Unset redistribution. */
1802 int bgp_redistribute_unreg(struct bgp
*bgp
, afi_t afi
, int type
,
1803 unsigned short instance
)
1805 struct bgp_redist
*red
;
1807 red
= bgp_redist_lookup(bgp
, afi
, type
, instance
);
1811 /* Return if zebra connection is disabled. */
1813 if (!redist_check_instance(&zclient
->mi_redist
[afi
][type
],
1816 redist_del_instance(&zclient
->mi_redist
[afi
][type
], instance
);
1818 if (!vrf_bitmap_check(zclient
->redist
[afi
][type
], bgp
->vrf_id
))
1820 vrf_bitmap_unset(zclient
->redist
[afi
][type
], bgp
->vrf_id
);
1824 if (bgp_install_info_to_zebra(bgp
)) {
1825 /* Send distribute delete message to zebra. */
1826 if (BGP_DEBUG(zebra
, ZEBRA
))
1827 zlog_debug("Tx redistribute del VRF %u afi %d %s %d",
1828 bgp
->vrf_id
, afi
, zebra_route_string(type
),
1830 zebra_redistribute_send(ZEBRA_REDISTRIBUTE_DELETE
, zclient
, afi
,
1831 type
, instance
, bgp
->vrf_id
);
1834 /* Withdraw redistributed routes from current BGP's routing table. */
1835 bgp_redistribute_withdraw(bgp
, afi
, type
, instance
);
1840 /* Unset redistribution. */
1841 int bgp_redistribute_unset(struct bgp
*bgp
, afi_t afi
, int type
,
1842 unsigned short instance
)
1844 struct bgp_redist
*red
;
1847 * vnc and vpn->vrf checks must be before red check because
1848 * they operate within bgpd irrespective of zebra connection
1849 * status. red lookup fails if there is no zebra connection.
1851 #ifdef ENABLE_BGP_VNC
1852 if (EVPN_ENABLED(bgp
) && type
== ZEBRA_ROUTE_VNC_DIRECT
) {
1853 vnc_export_bgp_disable(bgp
, afi
);
1857 red
= bgp_redist_lookup(bgp
, afi
, type
, instance
);
1861 bgp_redistribute_unreg(bgp
, afi
, type
, instance
);
1863 /* Unset route-map. */
1864 XFREE(MTYPE_ROUTE_MAP_NAME
, red
->rmap
.name
);
1865 route_map_counter_decrement(red
->rmap
.map
);
1866 red
->rmap
.map
= NULL
;
1869 red
->redist_metric_flag
= 0;
1870 red
->redist_metric
= 0;
1872 bgp_redist_del(bgp
, afi
, type
, instance
);
1877 void bgp_redistribute_redo(struct bgp
*bgp
)
1881 struct list
*red_list
;
1882 struct listnode
*node
;
1883 struct bgp_redist
*red
;
1885 for (afi
= AFI_IP
; afi
< AFI_MAX
; afi
++) {
1886 for (i
= 0; i
< ZEBRA_ROUTE_MAX
; i
++) {
1888 red_list
= bgp
->redist
[afi
][i
];
1892 for (ALL_LIST_ELEMENTS_RO(red_list
, node
, red
)) {
1893 bgp_redistribute_resend(bgp
, afi
, i
,
1900 /* Unset redistribute vrf bitmap during triggers like
1901 restart networking or delete VRFs */
1902 void bgp_unset_redist_vrf_bitmaps(struct bgp
*bgp
, vrf_id_t old_vrf_id
)
1907 for (afi
= AFI_IP
; afi
< AFI_MAX
; afi
++)
1908 for (i
= 0; i
< ZEBRA_ROUTE_MAX
; i
++)
1909 if (vrf_bitmap_check(zclient
->redist
[afi
][i
],
1911 vrf_bitmap_unset(zclient
->redist
[afi
][i
],
1916 void bgp_zclient_reset(void)
1918 zclient_reset(zclient
);
1921 /* Register this instance with Zebra. Invoked upon connect (for
1922 * default instance) and when other VRFs are learnt (or created and
1925 void bgp_zebra_instance_register(struct bgp
*bgp
)
1927 /* Don't try to register if we're not connected to Zebra */
1928 if (!zclient
|| zclient
->sock
< 0)
1931 if (BGP_DEBUG(zebra
, ZEBRA
))
1932 zlog_debug("Registering VRF %u", bgp
->vrf_id
);
1934 /* Register for router-id, interfaces, redistributed routes. */
1935 zclient_send_reg_requests(zclient
, bgp
->vrf_id
);
1937 /* For EVPN instance, register to learn about VNIs, if appropriate. */
1938 if (bgp
->advertise_all_vni
)
1939 bgp_zebra_advertise_all_vni(bgp
, 1);
1941 bgp_nht_register_nexthops(bgp
);
1944 /* Deregister this instance with Zebra. Invoked upon the instance
1945 * being deleted (default or VRF) and it is already registered.
1947 void bgp_zebra_instance_deregister(struct bgp
*bgp
)
1949 /* Don't try to deregister if we're not connected to Zebra */
1950 if (zclient
->sock
< 0)
1953 if (BGP_DEBUG(zebra
, ZEBRA
))
1954 zlog_debug("Deregistering VRF %u", bgp
->vrf_id
);
1956 /* For EVPN instance, unregister learning about VNIs, if appropriate. */
1957 if (bgp
->advertise_all_vni
)
1958 bgp_zebra_advertise_all_vni(bgp
, 0);
1960 /* Deregister for router-id, interfaces, redistributed routes. */
1961 zclient_send_dereg_requests(zclient
, bgp
->vrf_id
);
1964 void bgp_zebra_initiate_radv(struct bgp
*bgp
, struct peer
*peer
)
1966 int ra_interval
= BGP_UNNUM_DEFAULT_RA_INTERVAL
;
1968 /* Don't try to initiate if we're not connected to Zebra */
1969 if (zclient
->sock
< 0)
1972 if (BGP_DEBUG(zebra
, ZEBRA
))
1973 zlog_debug("%u: Initiating RA for peer %s", bgp
->vrf_id
,
1977 * If unnumbered peer (peer->ifp) call thru zapi to start RAs.
1978 * If we don't have an ifp pointer, call function to find the
1979 * ifps for a numbered enhe peer to turn RAs on.
1981 peer
->ifp
? zclient_send_interface_radv_req(zclient
, bgp
->vrf_id
,
1982 peer
->ifp
, 1, ra_interval
)
1983 : bgp_nht_reg_enhe_cap_intfs(peer
);
1986 void bgp_zebra_terminate_radv(struct bgp
*bgp
, struct peer
*peer
)
1988 /* Don't try to terminate if we're not connected to Zebra */
1989 if (zclient
->sock
< 0)
1992 if (BGP_DEBUG(zebra
, ZEBRA
))
1993 zlog_debug("%u: Terminating RA for peer %s", bgp
->vrf_id
,
1997 * If unnumbered peer (peer->ifp) call thru zapi to stop RAs.
1998 * If we don't have an ifp pointer, call function to find the
1999 * ifps for a numbered enhe peer to turn RAs off.
2001 peer
->ifp
? zclient_send_interface_radv_req(zclient
, bgp
->vrf_id
,
2003 : bgp_nht_dereg_enhe_cap_intfs(peer
);
2006 int bgp_zebra_advertise_subnet(struct bgp
*bgp
, int advertise
, vni_t vni
)
2008 struct stream
*s
= NULL
;
2011 if (!zclient
|| zclient
->sock
< 0)
2014 /* Don't try to register if Zebra doesn't know of this instance. */
2015 if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp
)) {
2016 if (BGP_DEBUG(zebra
, ZEBRA
))
2018 "%s: No zebra instance to talk to, cannot advertise subnet",
2026 zclient_create_header(s
, ZEBRA_ADVERTISE_SUBNET
, bgp
->vrf_id
);
2027 stream_putc(s
, advertise
);
2028 stream_put3(s
, vni
);
2029 stream_putw_at(s
, 0, stream_get_endp(s
));
2031 return zclient_send_message(zclient
);
2034 int bgp_zebra_advertise_svi_macip(struct bgp
*bgp
, int advertise
, vni_t vni
)
2036 struct stream
*s
= NULL
;
2039 if (!zclient
|| zclient
->sock
< 0)
2042 /* Don't try to register if Zebra doesn't know of this instance. */
2043 if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp
))
2049 zclient_create_header(s
, ZEBRA_ADVERTISE_SVI_MACIP
, bgp
->vrf_id
);
2050 stream_putc(s
, advertise
);
2051 stream_putl(s
, vni
);
2052 stream_putw_at(s
, 0, stream_get_endp(s
));
2054 return zclient_send_message(zclient
);
2057 int bgp_zebra_advertise_gw_macip(struct bgp
*bgp
, int advertise
, vni_t vni
)
2059 struct stream
*s
= NULL
;
2062 if (!zclient
|| zclient
->sock
< 0)
2065 /* Don't try to register if Zebra doesn't know of this instance. */
2066 if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp
)) {
2067 if (BGP_DEBUG(zebra
, ZEBRA
))
2069 "%s: No zebra instance to talk to, not installing gw_macip",
2077 zclient_create_header(s
, ZEBRA_ADVERTISE_DEFAULT_GW
, bgp
->vrf_id
);
2078 stream_putc(s
, advertise
);
2079 stream_putl(s
, vni
);
2080 stream_putw_at(s
, 0, stream_get_endp(s
));
2082 return zclient_send_message(zclient
);
2085 int bgp_zebra_vxlan_flood_control(struct bgp
*bgp
,
2086 enum vxlan_flood_control flood_ctrl
)
2091 if (!zclient
|| zclient
->sock
< 0)
2094 /* Don't try to register if Zebra doesn't know of this instance. */
2095 if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp
)) {
2096 if (BGP_DEBUG(zebra
, ZEBRA
))
2098 "%s: No zebra instance to talk to, not installing all vni",
2106 zclient_create_header(s
, ZEBRA_VXLAN_FLOOD_CONTROL
, bgp
->vrf_id
);
2107 stream_putc(s
, flood_ctrl
);
2108 stream_putw_at(s
, 0, stream_get_endp(s
));
2110 return zclient_send_message(zclient
);
2113 int bgp_zebra_advertise_all_vni(struct bgp
*bgp
, int advertise
)
2118 if (!zclient
|| zclient
->sock
< 0)
2121 /* Don't try to register if Zebra doesn't know of this instance. */
2122 if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp
))
2128 zclient_create_header(s
, ZEBRA_ADVERTISE_ALL_VNI
, bgp
->vrf_id
);
2129 stream_putc(s
, advertise
);
2130 /* Also inform current BUM handling setting. This is really
2131 * relevant only when 'advertise' is set.
2133 stream_putc(s
, bgp
->vxlan_flood_ctrl
);
2134 stream_putw_at(s
, 0, stream_get_endp(s
));
2136 return zclient_send_message(zclient
);
2139 int bgp_zebra_dup_addr_detection(struct bgp
*bgp
)
2144 if (!zclient
|| zclient
->sock
< 0)
2147 /* Don't try to register if Zebra doesn't know of this instance. */
2148 if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp
))
2151 if (BGP_DEBUG(zebra
, ZEBRA
))
2152 zlog_debug("dup addr detect %s max_moves %u time %u freeze %s freeze_time %u",
2153 bgp
->evpn_info
->dup_addr_detect
?
2154 "enable" : "disable",
2155 bgp
->evpn_info
->dad_max_moves
,
2156 bgp
->evpn_info
->dad_time
,
2157 bgp
->evpn_info
->dad_freeze
?
2158 "enable" : "disable",
2159 bgp
->evpn_info
->dad_freeze_time
);
2163 zclient_create_header(s
, ZEBRA_DUPLICATE_ADDR_DETECTION
,
2165 stream_putl(s
, bgp
->evpn_info
->dup_addr_detect
);
2166 stream_putl(s
, bgp
->evpn_info
->dad_time
);
2167 stream_putl(s
, bgp
->evpn_info
->dad_max_moves
);
2168 stream_putl(s
, bgp
->evpn_info
->dad_freeze
);
2169 stream_putl(s
, bgp
->evpn_info
->dad_freeze_time
);
2170 stream_putw_at(s
, 0, stream_get_endp(s
));
2172 return zclient_send_message(zclient
);
2175 static int rule_notify_owner(ZAPI_CALLBACK_ARGS
)
2177 uint32_t seqno
, priority
, unique
;
2178 enum zapi_rule_notify_owner note
;
2179 struct bgp_pbr_action
*bgp_pbra
;
2180 struct bgp_pbr_rule
*bgp_pbr
= NULL
;
2181 char ifname
[INTERFACE_NAMSIZ
+ 1];
2183 if (!zapi_rule_notify_decode(zclient
->ibuf
, &seqno
, &priority
, &unique
,
2187 bgp_pbra
= bgp_pbr_action_rule_lookup(vrf_id
, unique
);
2189 /* look in bgp pbr rule */
2190 bgp_pbr
= bgp_pbr_rule_lookup(vrf_id
, unique
);
2191 if (!bgp_pbr
&& note
!= ZAPI_RULE_REMOVED
) {
2192 if (BGP_DEBUG(zebra
, ZEBRA
))
2193 zlog_debug("%s: Fail to look BGP rule (%u)",
2200 case ZAPI_RULE_FAIL_INSTALL
:
2201 if (BGP_DEBUG(zebra
, ZEBRA
))
2202 zlog_debug("%s: Received RULE_FAIL_INSTALL", __func__
);
2204 bgp_pbra
->installed
= false;
2205 bgp_pbra
->install_in_progress
= false;
2207 bgp_pbr
->installed
= false;
2208 bgp_pbr
->install_in_progress
= false;
2211 case ZAPI_RULE_INSTALLED
:
2213 bgp_pbra
->installed
= true;
2214 bgp_pbra
->install_in_progress
= false;
2216 struct bgp_path_info
*path
;
2217 struct bgp_path_info_extra
*extra
;
2219 bgp_pbr
->installed
= true;
2220 bgp_pbr
->install_in_progress
= false;
2221 bgp_pbr
->action
->refcnt
++;
2222 /* link bgp_info to bgp_pbr */
2223 path
= (struct bgp_path_info
*)bgp_pbr
->path
;
2224 extra
= bgp_path_info_extra_get(path
);
2225 listnode_add_force(&extra
->bgp_fs_iprule
,
2228 if (BGP_DEBUG(zebra
, ZEBRA
))
2229 zlog_debug("%s: Received RULE_INSTALLED", __func__
);
2231 case ZAPI_RULE_FAIL_REMOVE
:
2232 case ZAPI_RULE_REMOVED
:
2233 if (BGP_DEBUG(zebra
, ZEBRA
))
2234 zlog_debug("%s: Received RULE REMOVED", __func__
);
2241 static int ipset_notify_owner(ZAPI_CALLBACK_ARGS
)
2244 enum zapi_ipset_notify_owner note
;
2245 struct bgp_pbr_match
*bgp_pbim
;
2247 if (!zapi_ipset_notify_decode(zclient
->ibuf
,
2252 bgp_pbim
= bgp_pbr_match_ipset_lookup(vrf_id
, unique
);
2254 if (BGP_DEBUG(zebra
, ZEBRA
))
2255 zlog_debug("%s: Fail to look BGP match ( %u, ID %u)",
2256 __func__
, note
, unique
);
2261 case ZAPI_IPSET_FAIL_INSTALL
:
2262 if (BGP_DEBUG(zebra
, ZEBRA
))
2263 zlog_debug("%s: Received IPSET_FAIL_INSTALL", __func__
);
2264 bgp_pbim
->installed
= false;
2265 bgp_pbim
->install_in_progress
= false;
2267 case ZAPI_IPSET_INSTALLED
:
2268 bgp_pbim
->installed
= true;
2269 bgp_pbim
->install_in_progress
= false;
2270 if (BGP_DEBUG(zebra
, ZEBRA
))
2271 zlog_debug("%s: Received IPSET_INSTALLED", __func__
);
2273 case ZAPI_IPSET_FAIL_REMOVE
:
2274 case ZAPI_IPSET_REMOVED
:
2275 if (BGP_DEBUG(zebra
, ZEBRA
))
2276 zlog_debug("%s: Received IPSET REMOVED", __func__
);
2283 static int ipset_entry_notify_owner(ZAPI_CALLBACK_ARGS
)
2286 char ipset_name
[ZEBRA_IPSET_NAME_SIZE
];
2287 enum zapi_ipset_entry_notify_owner note
;
2288 struct bgp_pbr_match_entry
*bgp_pbime
;
2290 if (!zapi_ipset_entry_notify_decode(
2296 bgp_pbime
= bgp_pbr_match_ipset_entry_lookup(vrf_id
,
2300 if (BGP_DEBUG(zebra
, ZEBRA
))
2302 "%s: Fail to look BGP match entry (%u, ID %u)",
2303 __func__
, note
, unique
);
2308 case ZAPI_IPSET_ENTRY_FAIL_INSTALL
:
2309 if (BGP_DEBUG(zebra
, ZEBRA
))
2310 zlog_debug("%s: Received IPSET_ENTRY_FAIL_INSTALL",
2312 bgp_pbime
->installed
= false;
2313 bgp_pbime
->install_in_progress
= false;
2315 case ZAPI_IPSET_ENTRY_INSTALLED
:
2317 struct bgp_path_info
*path
;
2318 struct bgp_path_info_extra
*extra
;
2320 bgp_pbime
->installed
= true;
2321 bgp_pbime
->install_in_progress
= false;
2322 if (BGP_DEBUG(zebra
, ZEBRA
))
2323 zlog_debug("%s: Received IPSET_ENTRY_INSTALLED",
2325 /* link bgp_path_info to bpme */
2326 path
= (struct bgp_path_info
*)bgp_pbime
->path
;
2327 extra
= bgp_path_info_extra_get(path
);
2328 listnode_add_force(&extra
->bgp_fs_pbr
, bgp_pbime
);
2331 case ZAPI_IPSET_ENTRY_FAIL_REMOVE
:
2332 case ZAPI_IPSET_ENTRY_REMOVED
:
2333 if (BGP_DEBUG(zebra
, ZEBRA
))
2334 zlog_debug("%s: Received IPSET_ENTRY_REMOVED",
2341 static int iptable_notify_owner(ZAPI_CALLBACK_ARGS
)
2344 enum zapi_iptable_notify_owner note
;
2345 struct bgp_pbr_match
*bgpm
;
2347 if (!zapi_iptable_notify_decode(
2352 bgpm
= bgp_pbr_match_iptable_lookup(vrf_id
, unique
);
2354 if (BGP_DEBUG(zebra
, ZEBRA
))
2355 zlog_debug("%s: Fail to look BGP iptable (%u %u)",
2356 __func__
, note
, unique
);
2360 case ZAPI_IPTABLE_FAIL_INSTALL
:
2361 if (BGP_DEBUG(zebra
, ZEBRA
))
2362 zlog_debug("%s: Received IPTABLE_FAIL_INSTALL",
2364 bgpm
->installed_in_iptable
= false;
2365 bgpm
->install_iptable_in_progress
= false;
2367 case ZAPI_IPTABLE_INSTALLED
:
2368 bgpm
->installed_in_iptable
= true;
2369 bgpm
->install_iptable_in_progress
= false;
2370 if (BGP_DEBUG(zebra
, ZEBRA
))
2371 zlog_debug("%s: Received IPTABLE_INSTALLED", __func__
);
2372 bgpm
->action
->refcnt
++;
2374 case ZAPI_IPTABLE_FAIL_REMOVE
:
2375 case ZAPI_IPTABLE_REMOVED
:
2376 if (BGP_DEBUG(zebra
, ZEBRA
))
2377 zlog_debug("%s: Received IPTABLE REMOVED", __func__
);
2383 /* this function is used to forge ip rule,
2384 * - either for iptable/ipset using fwmark id
2385 * - or for sample ip rule cmd
2387 static void bgp_encode_pbr_rule_action(struct stream
*s
,
2388 struct bgp_pbr_action
*pbra
,
2389 struct bgp_pbr_rule
*pbr
)
2392 uint8_t fam
= AF_INET
;
2394 if (pbra
->nh
.type
== NEXTHOP_TYPE_IPV6
)
2396 stream_putl(s
, 0); /* seqno unused */
2398 stream_putl(s
, pbr
->priority
);
2401 /* ruleno unused - priority change
2402 * ruleno permits distinguishing various FS PBR entries
2403 * - FS PBR entries based on ipset/iptables
2404 * - FS PBR entries based on iprule
2405 * the latter may contain default routing information injected by FS
2408 stream_putl(s
, pbr
->unique
);
2410 stream_putl(s
, pbra
->unique
);
2411 if (pbr
&& pbr
->flags
& MATCH_IP_SRC_SET
)
2412 memcpy(&pfx
, &(pbr
->src
), sizeof(struct prefix
));
2414 memset(&pfx
, 0, sizeof(pfx
));
2417 stream_putc(s
, pfx
.family
);
2418 stream_putc(s
, pfx
.prefixlen
);
2419 stream_put(s
, &pfx
.u
.prefix
, prefix_blen(&pfx
));
2421 stream_putw(s
, 0); /* src port */
2423 if (pbr
&& pbr
->flags
& MATCH_IP_DST_SET
)
2424 memcpy(&pfx
, &(pbr
->dst
), sizeof(struct prefix
));
2426 memset(&pfx
, 0, sizeof(pfx
));
2429 stream_putc(s
, pfx
.family
);
2430 stream_putc(s
, pfx
.prefixlen
);
2431 stream_put(s
, &pfx
.u
.prefix
, prefix_blen(&pfx
));
2433 stream_putw(s
, 0); /* dst port */
2435 /* if pbr present, fwmark is not used */
2439 stream_putl(s
, pbra
->fwmark
); /* fwmark */
2441 stream_putl(s
, pbra
->table_id
);
2443 stream_putl(s
, 0); /* ifindex unused */
2446 static void bgp_encode_pbr_ipset_match(struct stream
*s
,
2447 struct bgp_pbr_match
*pbim
)
2449 stream_putl(s
, pbim
->unique
);
2450 stream_putl(s
, pbim
->type
);
2451 stream_putc(s
, pbim
->family
);
2452 stream_put(s
, pbim
->ipset_name
,
2453 ZEBRA_IPSET_NAME_SIZE
);
2456 static void bgp_encode_pbr_ipset_entry_match(struct stream
*s
,
2457 struct bgp_pbr_match_entry
*pbime
)
2459 stream_putl(s
, pbime
->unique
);
2460 /* check that back pointer is not null */
2461 stream_put(s
, pbime
->backpointer
->ipset_name
,
2462 ZEBRA_IPSET_NAME_SIZE
);
2464 stream_putc(s
, pbime
->src
.family
);
2465 stream_putc(s
, pbime
->src
.prefixlen
);
2466 stream_put(s
, &pbime
->src
.u
.prefix
, prefix_blen(&pbime
->src
));
2468 stream_putc(s
, pbime
->dst
.family
);
2469 stream_putc(s
, pbime
->dst
.prefixlen
);
2470 stream_put(s
, &pbime
->dst
.u
.prefix
, prefix_blen(&pbime
->dst
));
2472 stream_putw(s
, pbime
->src_port_min
);
2473 stream_putw(s
, pbime
->src_port_max
);
2474 stream_putw(s
, pbime
->dst_port_min
);
2475 stream_putw(s
, pbime
->dst_port_max
);
2476 stream_putc(s
, pbime
->proto
);
2479 static void bgp_encode_pbr_iptable_match(struct stream
*s
,
2480 struct bgp_pbr_action
*bpa
,
2481 struct bgp_pbr_match
*pbm
)
2483 stream_putl(s
, pbm
->unique2
);
2485 stream_putl(s
, pbm
->type
);
2487 stream_putl(s
, pbm
->flags
);
2489 /* TODO: correlate with what is contained
2490 * into bgp_pbr_action.
2491 * currently only forward supported
2493 if (bpa
->nh
.type
== NEXTHOP_TYPE_BLACKHOLE
)
2494 stream_putl(s
, ZEBRA_IPTABLES_DROP
);
2496 stream_putl(s
, ZEBRA_IPTABLES_FORWARD
);
2497 stream_putl(s
, bpa
->fwmark
);
2498 stream_put(s
, pbm
->ipset_name
,
2499 ZEBRA_IPSET_NAME_SIZE
);
2500 stream_putc(s
, pbm
->family
);
2501 stream_putw(s
, pbm
->pkt_len_min
);
2502 stream_putw(s
, pbm
->pkt_len_max
);
2503 stream_putw(s
, pbm
->tcp_flags
);
2504 stream_putw(s
, pbm
->tcp_mask_flags
);
2505 stream_putc(s
, pbm
->dscp_value
);
2506 stream_putc(s
, pbm
->fragment
);
2507 stream_putc(s
, pbm
->protocol
);
2508 stream_putw(s
, pbm
->flow_label
);
2511 /* BGP has established connection with Zebra. */
2512 static void bgp_zebra_connected(struct zclient
*zclient
)
2516 zclient_num_connects
++; /* increment even if not responding */
2518 /* At this point, we may or may not have BGP instances configured, but
2519 * we're only interested in the default VRF (others wouldn't have learnt
2520 * the VRF from Zebra yet.)
2522 bgp
= bgp_get_default();
2526 bgp_zebra_instance_register(bgp
);
2528 /* Send the client registration */
2529 bfd_client_sendmsg(zclient
, ZEBRA_BFD_CLIENT_REGISTER
, bgp
->vrf_id
);
2531 /* tell label pool that zebra is connected */
2532 bgp_lp_event_zebra_up();
2534 /* TODO - What if we have peers and networks configured, do we have to
2537 BGP_GR_ROUTER_DETECT_AND_SEND_CAPABILITY_TO_ZEBRA(bgp
, bgp
->peer
);
2540 static int bgp_zebra_process_local_es_add(ZAPI_CALLBACK_ARGS
)
2543 struct bgp
*bgp
= NULL
;
2544 struct stream
*s
= NULL
;
2545 char buf
[ESI_STR_LEN
];
2546 struct in_addr originator_ip
;
2550 bgp
= bgp_lookup_by_vrf_id(vrf_id
);
2555 stream_get(&esi
, s
, sizeof(esi_t
));
2556 originator_ip
.s_addr
= stream_get_ipv4(s
);
2557 active
= stream_getc(s
);
2558 df_pref
= stream_getw(s
);
2560 if (BGP_DEBUG(zebra
, ZEBRA
))
2562 "Rx add ESI %s originator-ip %pI4 active %u df_pref %u",
2563 esi_to_str(&esi
, buf
, sizeof(buf
)),
2564 &originator_ip
, active
, df_pref
);
2566 bgp_evpn_local_es_add(bgp
, &esi
, originator_ip
, active
, df_pref
);
2571 static int bgp_zebra_process_local_es_del(ZAPI_CALLBACK_ARGS
)
2574 struct bgp
*bgp
= NULL
;
2575 struct stream
*s
= NULL
;
2576 char buf
[ESI_STR_LEN
];
2578 memset(&esi
, 0, sizeof(esi_t
));
2579 bgp
= bgp_lookup_by_vrf_id(vrf_id
);
2584 stream_get(&esi
, s
, sizeof(esi_t
));
2586 if (BGP_DEBUG(zebra
, ZEBRA
))
2587 zlog_debug("Rx del ESI %s",
2588 esi_to_str(&esi
, buf
, sizeof(buf
)));
2590 bgp_evpn_local_es_del(bgp
, &esi
);
2595 static int bgp_zebra_process_local_es_evi(ZAPI_CALLBACK_ARGS
)
2601 char buf
[ESI_STR_LEN
];
2603 bgp
= bgp_lookup_by_vrf_id(vrf_id
);
2608 stream_get(&esi
, s
, sizeof(esi_t
));
2609 vni
= stream_getl(s
);
2611 if (BGP_DEBUG(zebra
, ZEBRA
))
2612 zlog_debug("Rx %s ESI %s VNI %u",
2613 ZEBRA_VNI_ADD
? "add" : "del",
2614 esi_to_str(&esi
, buf
, sizeof(buf
)), vni
);
2616 if (cmd
== ZEBRA_LOCAL_ES_EVI_ADD
)
2617 bgp_evpn_local_es_evi_add(bgp
, &esi
, vni
);
2619 bgp_evpn_local_es_evi_del(bgp
, &esi
, vni
);
2624 static int bgp_zebra_process_local_l3vni(ZAPI_CALLBACK_ARGS
)
2627 char buf
[ETHER_ADDR_STRLEN
];
2629 struct ethaddr svi_rmac
, vrr_rmac
= {.octet
= {0} };
2630 struct in_addr originator_ip
;
2632 ifindex_t svi_ifindex
;
2633 bool is_anycast_mac
= false;
2634 char buf1
[ETHER_ADDR_STRLEN
];
2636 memset(&svi_rmac
, 0, sizeof(struct ethaddr
));
2637 memset(&originator_ip
, 0, sizeof(struct in_addr
));
2639 l3vni
= stream_getl(s
);
2640 if (cmd
== ZEBRA_L3VNI_ADD
) {
2641 stream_get(&svi_rmac
, s
, sizeof(struct ethaddr
));
2642 originator_ip
.s_addr
= stream_get_ipv4(s
);
2643 stream_get(&filter
, s
, sizeof(int));
2644 svi_ifindex
= stream_getl(s
);
2645 stream_get(&vrr_rmac
, s
, sizeof(struct ethaddr
));
2646 is_anycast_mac
= stream_getl(s
);
2648 if (BGP_DEBUG(zebra
, ZEBRA
))
2649 zlog_debug("Rx L3-VNI ADD VRF %s VNI %u RMAC svi-mac %s vrr-mac %s filter %s svi-if %u",
2650 vrf_id_to_name(vrf_id
), l3vni
,
2651 prefix_mac2str(&svi_rmac
, buf
, sizeof(buf
)),
2652 prefix_mac2str(&vrr_rmac
, buf1
,
2654 filter
? "prefix-routes-only" : "none",
2657 bgp_evpn_local_l3vni_add(l3vni
, vrf_id
, &svi_rmac
, &vrr_rmac
,
2658 originator_ip
, filter
, svi_ifindex
,
2661 if (BGP_DEBUG(zebra
, ZEBRA
))
2662 zlog_debug("Rx L3-VNI DEL VRF %s VNI %u",
2663 vrf_id_to_name(vrf_id
), l3vni
);
2665 bgp_evpn_local_l3vni_del(l3vni
, vrf_id
);
2671 static int bgp_zebra_process_local_vni(ZAPI_CALLBACK_ARGS
)
2676 struct in_addr vtep_ip
= {INADDR_ANY
};
2677 vrf_id_t tenant_vrf_id
= VRF_DEFAULT
;
2678 struct in_addr mcast_grp
= {INADDR_ANY
};
2681 vni
= stream_getl(s
);
2682 if (cmd
== ZEBRA_VNI_ADD
) {
2683 vtep_ip
.s_addr
= stream_get_ipv4(s
);
2684 stream_get(&tenant_vrf_id
, s
, sizeof(vrf_id_t
));
2685 mcast_grp
.s_addr
= stream_get_ipv4(s
);
2688 bgp
= bgp_lookup_by_vrf_id(vrf_id
);
2692 if (BGP_DEBUG(zebra
, ZEBRA
))
2693 zlog_debug("Rx VNI %s VRF %s VNI %u tenant-vrf %s",
2694 (cmd
== ZEBRA_VNI_ADD
) ? "add" : "del",
2695 vrf_id_to_name(vrf_id
), vni
,
2696 vrf_id_to_name(tenant_vrf_id
));
2698 if (cmd
== ZEBRA_VNI_ADD
)
2699 return bgp_evpn_local_vni_add(
2701 vtep_ip
.s_addr
!= INADDR_ANY
? vtep_ip
: bgp
->router_id
,
2702 tenant_vrf_id
, mcast_grp
);
2704 return bgp_evpn_local_vni_del(bgp
, vni
);
2707 static int bgp_zebra_process_local_macip(ZAPI_CALLBACK_ARGS
)
2715 char buf
[ETHER_ADDR_STRLEN
];
2716 char buf1
[INET6_ADDRSTRLEN
];
2718 uint32_t seqnum
= 0;
2720 char buf2
[ESI_STR_LEN
];
2723 memset(&ip
, 0, sizeof(ip
));
2725 vni
= stream_getl(s
);
2726 stream_get(&mac
.octet
, s
, ETH_ALEN
);
2727 ipa_len
= stream_getl(s
);
2728 if (ipa_len
!= 0 && ipa_len
!= IPV4_MAX_BYTELEN
2729 && ipa_len
!= IPV6_MAX_BYTELEN
) {
2730 flog_err(EC_BGP_MACIP_LEN
,
2731 "%u:Recv MACIP %s with invalid IP addr length %d",
2732 vrf_id
, (cmd
== ZEBRA_MACIP_ADD
) ? "Add" : "Del",
2739 (ipa_len
== IPV4_MAX_BYTELEN
) ? IPADDR_V4
: IPADDR_V6
;
2740 stream_get(&ip
.ip
.addr
, s
, ipa_len
);
2742 if (cmd
== ZEBRA_MACIP_ADD
) {
2743 flags
= stream_getc(s
);
2744 seqnum
= stream_getl(s
);
2745 stream_get(&esi
, s
, sizeof(esi_t
));
2747 state
= stream_getl(s
);
2750 bgp
= bgp_lookup_by_vrf_id(vrf_id
);
2754 if (BGP_DEBUG(zebra
, ZEBRA
))
2755 zlog_debug("%u:Recv MACIP %s f 0x%x MAC %s IP %s VNI %u seq %u state %d ESI %s",
2756 vrf_id
, (cmd
== ZEBRA_MACIP_ADD
) ? "Add" : "Del",
2757 flags
, prefix_mac2str(&mac
, buf
, sizeof(buf
)),
2758 ipaddr2str(&ip
, buf1
, sizeof(buf1
)), vni
, seqnum
,
2759 state
, esi_to_str(&esi
, buf2
, sizeof(buf2
)));
2761 if (cmd
== ZEBRA_MACIP_ADD
)
2762 return bgp_evpn_local_macip_add(bgp
, vni
, &mac
, &ip
,
2763 flags
, seqnum
, &esi
);
2765 return bgp_evpn_local_macip_del(bgp
, vni
, &mac
, &ip
, state
);
2768 static void bgp_zebra_process_local_ip_prefix(ZAPI_CALLBACK_ARGS
)
2770 struct stream
*s
= NULL
;
2771 struct bgp
*bgp_vrf
= NULL
;
2774 memset(&p
, 0, sizeof(struct prefix
));
2776 stream_get(&p
, s
, sizeof(struct prefix
));
2778 bgp_vrf
= bgp_lookup_by_vrf_id(vrf_id
);
2782 if (BGP_DEBUG(zebra
, ZEBRA
))
2783 zlog_debug("Recv prefix %pFX %s on vrf %s", &p
,
2784 (cmd
== ZEBRA_IP_PREFIX_ROUTE_ADD
) ? "ADD" : "DEL",
2785 vrf_id_to_name(vrf_id
));
2787 if (cmd
== ZEBRA_IP_PREFIX_ROUTE_ADD
) {
2789 if (p
.family
== AF_INET
)
2790 bgp_evpn_advertise_type5_route(bgp_vrf
, &p
, NULL
,
2791 AFI_IP
, SAFI_UNICAST
);
2793 bgp_evpn_advertise_type5_route(bgp_vrf
, &p
, NULL
,
2794 AFI_IP6
, SAFI_UNICAST
);
2797 if (p
.family
== AF_INET
)
2798 bgp_evpn_withdraw_type5_route(bgp_vrf
, &p
, AFI_IP
,
2801 bgp_evpn_withdraw_type5_route(bgp_vrf
, &p
, AFI_IP6
,
2806 static void bgp_zebra_process_label_chunk(ZAPI_CALLBACK_ARGS
)
2808 struct stream
*s
= NULL
;
2809 uint8_t response_keep
;
2813 unsigned short instance
;
2816 STREAM_GETC(s
, proto
);
2817 STREAM_GETW(s
, instance
);
2818 STREAM_GETC(s
, response_keep
);
2819 STREAM_GETL(s
, first
);
2820 STREAM_GETL(s
, last
);
2822 if (zclient
->redist_default
!= proto
) {
2823 flog_err(EC_BGP_LM_ERROR
, "Got LM msg with wrong proto %u",
2827 if (zclient
->instance
!= instance
) {
2828 flog_err(EC_BGP_LM_ERROR
, "Got LM msg with wrong instance %u",
2834 first
< MPLS_LABEL_UNRESERVED_MIN
||
2835 last
> MPLS_LABEL_UNRESERVED_MAX
) {
2837 flog_err(EC_BGP_LM_ERROR
, "%s: Invalid Label chunk: %u - %u",
2838 __func__
, first
, last
);
2841 if (BGP_DEBUG(zebra
, ZEBRA
)) {
2842 zlog_debug("Label Chunk assign: %u - %u (%u) ",
2843 first
, last
, response_keep
);
2846 bgp_lp_event_chunk(response_keep
, first
, last
);
2848 stream_failure
: /* for STREAM_GETX */
2852 extern struct zebra_privs_t bgpd_privs
;
2854 static int bgp_ifp_create(struct interface
*ifp
)
2858 if (BGP_DEBUG(zebra
, ZEBRA
))
2859 zlog_debug("Rx Intf add VRF %u IF %s", ifp
->vrf_id
, ifp
->name
);
2861 bgp
= bgp_lookup_by_vrf_id(ifp
->vrf_id
);
2865 bgp_mac_add_mac_entry(ifp
);
2867 bgp_update_interface_nbrs(bgp
, ifp
, ifp
);
2871 void bgp_zebra_init(struct thread_master
*master
, unsigned short instance
)
2873 zclient_num_connects
= 0;
2875 if_zapi_callbacks(bgp_ifp_create
, bgp_ifp_up
,
2876 bgp_ifp_down
, bgp_ifp_destroy
);
2878 /* Set default values. */
2879 zclient
= zclient_new(master
, &zclient_options_default
);
2880 zclient_init(zclient
, ZEBRA_ROUTE_BGP
, 0, &bgpd_privs
);
2881 zclient
->zebra_connected
= bgp_zebra_connected
;
2882 zclient
->router_id_update
= bgp_router_id_update
;
2883 zclient
->interface_address_add
= bgp_interface_address_add
;
2884 zclient
->interface_address_delete
= bgp_interface_address_delete
;
2885 zclient
->interface_nbr_address_add
= bgp_interface_nbr_address_add
;
2886 zclient
->interface_nbr_address_delete
=
2887 bgp_interface_nbr_address_delete
;
2888 zclient
->interface_vrf_update
= bgp_interface_vrf_update
;
2889 zclient
->redistribute_route_add
= zebra_read_route
;
2890 zclient
->redistribute_route_del
= zebra_read_route
;
2891 zclient
->nexthop_update
= bgp_read_nexthop_update
;
2892 zclient
->import_check_update
= bgp_read_import_check_update
;
2893 zclient
->fec_update
= bgp_read_fec_update
;
2894 zclient
->local_es_add
= bgp_zebra_process_local_es_add
;
2895 zclient
->local_es_del
= bgp_zebra_process_local_es_del
;
2896 zclient
->local_vni_add
= bgp_zebra_process_local_vni
;
2897 zclient
->local_es_evi_add
= bgp_zebra_process_local_es_evi
;
2898 zclient
->local_es_evi_del
= bgp_zebra_process_local_es_evi
;
2899 zclient
->local_vni_del
= bgp_zebra_process_local_vni
;
2900 zclient
->local_macip_add
= bgp_zebra_process_local_macip
;
2901 zclient
->local_macip_del
= bgp_zebra_process_local_macip
;
2902 zclient
->local_l3vni_add
= bgp_zebra_process_local_l3vni
;
2903 zclient
->local_l3vni_del
= bgp_zebra_process_local_l3vni
;
2904 zclient
->local_ip_prefix_add
= bgp_zebra_process_local_ip_prefix
;
2905 zclient
->local_ip_prefix_del
= bgp_zebra_process_local_ip_prefix
;
2906 zclient
->label_chunk
= bgp_zebra_process_label_chunk
;
2907 zclient
->rule_notify_owner
= rule_notify_owner
;
2908 zclient
->ipset_notify_owner
= ipset_notify_owner
;
2909 zclient
->ipset_entry_notify_owner
= ipset_entry_notify_owner
;
2910 zclient
->iptable_notify_owner
= iptable_notify_owner
;
2911 zclient
->instance
= instance
;
2914 void bgp_zebra_destroy(void)
2916 if (zclient
== NULL
)
2918 zclient_stop(zclient
);
2919 zclient_free(zclient
);
2923 int bgp_zebra_num_connects(void)
2925 return zclient_num_connects
;
2928 void bgp_send_pbr_rule_action(struct bgp_pbr_action
*pbra
,
2929 struct bgp_pbr_rule
*pbr
,
2934 if (pbra
->install_in_progress
&& !pbr
)
2936 if (pbr
&& pbr
->install_in_progress
)
2938 if (BGP_DEBUG(zebra
, ZEBRA
)) {
2940 zlog_debug("%s: table %d (ip rule) %d", __func__
,
2941 pbra
->table_id
, install
);
2943 zlog_debug("%s: table %d fwmark %d %d", __func__
,
2944 pbra
->table_id
, pbra
->fwmark
, install
);
2949 zclient_create_header(s
,
2950 install
? ZEBRA_RULE_ADD
: ZEBRA_RULE_DELETE
,
2952 stream_putl(s
, 1); /* send one pbr action */
2954 bgp_encode_pbr_rule_action(s
, pbra
, pbr
);
2956 stream_putw_at(s
, 0, stream_get_endp(s
));
2957 if (!zclient_send_message(zclient
) && install
) {
2959 pbra
->install_in_progress
= true;
2961 pbr
->install_in_progress
= true;
2965 void bgp_send_pbr_ipset_match(struct bgp_pbr_match
*pbrim
, bool install
)
2969 if (pbrim
->install_in_progress
)
2971 if (BGP_DEBUG(zebra
, ZEBRA
))
2972 zlog_debug("%s: name %s type %d %d, ID %u", __func__
,
2973 pbrim
->ipset_name
, pbrim
->type
, install
,
2978 zclient_create_header(s
,
2979 install
? ZEBRA_IPSET_CREATE
:
2980 ZEBRA_IPSET_DESTROY
,
2983 stream_putl(s
, 1); /* send one pbr action */
2985 bgp_encode_pbr_ipset_match(s
, pbrim
);
2987 stream_putw_at(s
, 0, stream_get_endp(s
));
2988 if (!zclient_send_message(zclient
) && install
)
2989 pbrim
->install_in_progress
= true;
2992 void bgp_send_pbr_ipset_entry_match(struct bgp_pbr_match_entry
*pbrime
,
2997 if (pbrime
->install_in_progress
)
2999 if (BGP_DEBUG(zebra
, ZEBRA
))
3000 zlog_debug("%s: name %s %d %d, ID %u", __func__
,
3001 pbrime
->backpointer
->ipset_name
, pbrime
->unique
,
3002 install
, pbrime
->unique
);
3006 zclient_create_header(s
,
3007 install
? ZEBRA_IPSET_ENTRY_ADD
:
3008 ZEBRA_IPSET_ENTRY_DELETE
,
3011 stream_putl(s
, 1); /* send one pbr action */
3013 bgp_encode_pbr_ipset_entry_match(s
, pbrime
);
3015 stream_putw_at(s
, 0, stream_get_endp(s
));
3016 if (!zclient_send_message(zclient
) && install
)
3017 pbrime
->install_in_progress
= true;
3020 static void bgp_encode_pbr_interface_list(struct bgp
*bgp
, struct stream
*s
,
3023 struct bgp_pbr_config
*bgp_pbr_cfg
= bgp
->bgp_pbr_cfg
;
3024 struct bgp_pbr_interface_head
*head
;
3025 struct bgp_pbr_interface
*pbr_if
;
3026 struct interface
*ifp
;
3030 if (family
== AF_INET
)
3031 head
= &(bgp_pbr_cfg
->ifaces_by_name_ipv4
);
3033 head
= &(bgp_pbr_cfg
->ifaces_by_name_ipv6
);
3034 RB_FOREACH (pbr_if
, bgp_pbr_interface_head
, head
) {
3035 ifp
= if_lookup_by_name(pbr_if
->name
, bgp
->vrf_id
);
3037 stream_putl(s
, ifp
->ifindex
);
3041 static int bgp_pbr_get_ifnumber(struct bgp
*bgp
, uint8_t family
)
3043 struct bgp_pbr_config
*bgp_pbr_cfg
= bgp
->bgp_pbr_cfg
;
3044 struct bgp_pbr_interface_head
*head
;
3045 struct bgp_pbr_interface
*pbr_if
;
3050 if (family
== AF_INET
)
3051 head
= &(bgp_pbr_cfg
->ifaces_by_name_ipv4
);
3053 head
= &(bgp_pbr_cfg
->ifaces_by_name_ipv6
);
3054 RB_FOREACH (pbr_if
, bgp_pbr_interface_head
, head
) {
3055 if (if_lookup_by_name(pbr_if
->name
, bgp
->vrf_id
))
3061 void bgp_send_pbr_iptable(struct bgp_pbr_action
*pba
,
3062 struct bgp_pbr_match
*pbm
,
3069 if (pbm
->install_iptable_in_progress
)
3071 if (BGP_DEBUG(zebra
, ZEBRA
))
3072 zlog_debug("%s: name %s type %d mark %d %d, ID %u", __func__
,
3073 pbm
->ipset_name
, pbm
->type
, pba
->fwmark
, install
,
3078 zclient_create_header(s
,
3079 install
? ZEBRA_IPTABLE_ADD
:
3080 ZEBRA_IPTABLE_DELETE
,
3083 bgp_encode_pbr_iptable_match(s
, pba
, pbm
);
3084 nb_interface
= bgp_pbr_get_ifnumber(pba
->bgp
, pbm
->family
);
3085 stream_putl(s
, nb_interface
);
3087 bgp_encode_pbr_interface_list(pba
->bgp
, s
, pbm
->family
);
3088 stream_putw_at(s
, 0, stream_get_endp(s
));
3089 ret
= zclient_send_message(zclient
);
3094 pbm
->install_iptable_in_progress
= true;
3098 /* inject in table <table_id> a default route to:
3099 * - if nexthop IP is present : to this nexthop
3100 * - if vrf is different from local : to the matching VRF
3102 void bgp_zebra_announce_default(struct bgp
*bgp
, struct nexthop
*nh
,
3103 afi_t afi
, uint32_t table_id
, bool announce
)
3105 struct zapi_nexthop
*api_nh
;
3106 struct zapi_route api
;
3109 if (!nh
|| (nh
->type
!= NEXTHOP_TYPE_IPV4
3110 && nh
->type
!= NEXTHOP_TYPE_IPV6
)
3111 || nh
->vrf_id
== VRF_UNKNOWN
)
3113 memset(&p
, 0, sizeof(struct prefix
));
3114 if (afi
!= AFI_IP
&& afi
!= AFI_IP6
)
3116 p
.family
= afi2family(afi
);
3117 memset(&api
, 0, sizeof(api
));
3118 api
.vrf_id
= bgp
->vrf_id
;
3119 api
.type
= ZEBRA_ROUTE_BGP
;
3120 api
.safi
= SAFI_UNICAST
;
3122 api
.tableid
= table_id
;
3123 api
.nexthop_num
= 1;
3124 SET_FLAG(api
.message
, ZAPI_MESSAGE_TABLEID
);
3125 SET_FLAG(api
.message
, ZAPI_MESSAGE_NEXTHOP
);
3126 api_nh
= &api
.nexthops
[0];
3128 api
.distance
= ZEBRA_EBGP_DISTANCE_DEFAULT
;
3129 SET_FLAG(api
.message
, ZAPI_MESSAGE_DISTANCE
);
3132 if (afi
== AFI_IP
&& nh
->gate
.ipv4
.s_addr
!= INADDR_ANY
) {
3133 char buff
[PREFIX_STRLEN
];
3135 api_nh
->vrf_id
= nh
->vrf_id
;
3136 api_nh
->gate
.ipv4
= nh
->gate
.ipv4
;
3137 api_nh
->type
= NEXTHOP_TYPE_IPV4
;
3139 inet_ntop(AF_INET
, &(nh
->gate
.ipv4
), buff
, INET_ADDRSTRLEN
);
3140 if (BGP_DEBUG(zebra
, ZEBRA
))
3141 zlog_debug("BGP: %s default route to %s table %d (redirect IP)",
3142 announce
? "adding" : "withdrawing",
3144 zclient_route_send(announce
? ZEBRA_ROUTE_ADD
3145 : ZEBRA_ROUTE_DELETE
,
3147 } else if (afi
== AFI_IP6
&&
3148 memcmp(&nh
->gate
.ipv6
,
3149 &in6addr_any
, sizeof(struct in6_addr
))) {
3150 char buff
[PREFIX_STRLEN
];
3152 api_nh
->vrf_id
= nh
->vrf_id
;
3153 memcpy(&api_nh
->gate
.ipv6
, &nh
->gate
.ipv6
,
3154 sizeof(struct in6_addr
));
3155 api_nh
->type
= NEXTHOP_TYPE_IPV6
;
3157 inet_ntop(AF_INET6
, &(nh
->gate
.ipv6
), buff
, INET_ADDRSTRLEN
);
3158 if (BGP_DEBUG(zebra
, ZEBRA
))
3159 zlog_debug("BGP: %s default route to %s table %d (redirect IP)",
3160 announce
? "adding" : "withdrawing",
3162 zclient_route_send(announce
? ZEBRA_ROUTE_ADD
3163 : ZEBRA_ROUTE_DELETE
,
3165 } else if (nh
->vrf_id
!= bgp
->vrf_id
) {
3167 struct interface
*ifp
;
3169 vrf
= vrf_lookup_by_id(nh
->vrf_id
);
3172 /* create default route with interface <VRF>
3173 * with nexthop-vrf <VRF>
3175 ifp
= if_lookup_by_name_all_vrf(vrf
->name
);
3178 api_nh
->vrf_id
= nh
->vrf_id
;
3179 api_nh
->type
= NEXTHOP_TYPE_IFINDEX
;
3180 api_nh
->ifindex
= ifp
->ifindex
;
3181 if (BGP_DEBUG(zebra
, ZEBRA
))
3182 zlog_info("BGP: %s default route to %s table %d (redirect VRF)",
3183 announce
? "adding" : "withdrawing",
3184 vrf
->name
, table_id
);
3185 zclient_route_send(announce
? ZEBRA_ROUTE_ADD
3186 : ZEBRA_ROUTE_DELETE
,
3192 /* Send capabilities to RIB */
3193 int bgp_zebra_send_capabilities(struct bgp
*bgp
, bool disable
)
3195 struct zapi_cap api
;
3196 int ret
= BGP_GR_SUCCESS
;
3198 if (zclient
== NULL
) {
3199 if (BGP_DEBUG(zebra
, ZEBRA
))
3200 zlog_debug("zclient invalid");
3201 return BGP_GR_FAILURE
;
3204 /* Check if the client is connected */
3205 if ((zclient
->sock
< 0) || (zclient
->t_connect
)) {
3206 if (BGP_DEBUG(zebra
, ZEBRA
))
3207 zlog_debug("client not connected");
3208 return BGP_GR_FAILURE
;
3211 /* Check if capability is already sent. If the flag force is set
3212 * send the capability since this can be initial bgp configuration
3214 memset(&api
, 0, sizeof(struct zapi_cap
));
3216 api
.cap
= ZEBRA_CLIENT_GR_DISABLE
;
3217 api
.vrf_id
= bgp
->vrf_id
;
3219 api
.cap
= ZEBRA_CLIENT_GR_CAPABILITIES
;
3220 api
.stale_removal_time
= bgp
->rib_stale_time
;
3221 api
.vrf_id
= bgp
->vrf_id
;
3224 if (zclient_capabilities_send(ZEBRA_CLIENT_CAPABILITIES
, zclient
, &api
)
3226 zlog_err("error sending capability");
3227 ret
= BGP_GR_FAILURE
;
3230 bgp
->present_zebra_gr_state
= ZEBRA_GR_DISABLE
;
3232 bgp
->present_zebra_gr_state
= ZEBRA_GR_ENABLE
;
3234 if (BGP_DEBUG(zebra
, ZEBRA
))
3235 zlog_debug("send capabilty success");
3236 ret
= BGP_GR_SUCCESS
;
3241 /* Send route update pesding or completed status to RIB for the
3242 * specific AFI, SAFI
3244 int bgp_zebra_update(afi_t afi
, safi_t safi
, vrf_id_t vrf_id
, int type
)
3246 struct zapi_cap api
= {0};
3248 if (zclient
== NULL
) {
3249 if (BGP_DEBUG(zebra
, ZEBRA
))
3250 zlog_debug("zclient == NULL, invalid");
3251 return BGP_GR_FAILURE
;
3254 /* Check if the client is connected */
3255 if ((zclient
->sock
< 0) || (zclient
->t_connect
)) {
3256 if (BGP_DEBUG(zebra
, ZEBRA
))
3257 zlog_debug("client not connected");
3258 return BGP_GR_FAILURE
;
3263 api
.vrf_id
= vrf_id
;
3266 if (zclient_capabilities_send(ZEBRA_CLIENT_CAPABILITIES
, zclient
, &api
)
3268 if (BGP_DEBUG(zebra
, ZEBRA
))
3269 zlog_debug("error sending capability");
3270 return BGP_GR_FAILURE
;
3272 return BGP_GR_SUCCESS
;
3276 /* Send RIB stale timer update */
3277 int bgp_zebra_stale_timer_update(struct bgp
*bgp
)
3279 struct zapi_cap api
;
3281 if (zclient
== NULL
) {
3282 if (BGP_DEBUG(zebra
, ZEBRA
))
3283 zlog_debug("zclient invalid");
3284 return BGP_GR_FAILURE
;
3287 /* Check if the client is connected */
3288 if ((zclient
->sock
< 0) || (zclient
->t_connect
)) {
3289 if (BGP_DEBUG(zebra
, ZEBRA
))
3290 zlog_debug("client not connected");
3291 return BGP_GR_FAILURE
;
3294 memset(&api
, 0, sizeof(struct zapi_cap
));
3295 api
.cap
= ZEBRA_CLIENT_RIB_STALE_TIME
;
3296 api
.stale_removal_time
= bgp
->rib_stale_time
;
3297 api
.vrf_id
= bgp
->vrf_id
;
3298 if (zclient_capabilities_send(ZEBRA_CLIENT_CAPABILITIES
, zclient
, &api
)
3300 if (BGP_DEBUG(zebra
, ZEBRA
))
3301 zlog_debug("error sending capability");
3302 return BGP_GR_FAILURE
;
3304 if (BGP_DEBUG(zebra
, ZEBRA
))
3305 zlog_debug("send capabilty success");
3306 return BGP_GR_SUCCESS
;