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"
36 #include "lib/route_opaque.h"
42 #include "bgpd/bgpd.h"
43 #include "bgpd/bgp_route.h"
44 #include "bgpd/bgp_attr.h"
45 #include "bgpd/bgp_aspath.h"
46 #include "bgpd/bgp_nexthop.h"
47 #include "bgpd/bgp_zebra.h"
48 #include "bgpd/bgp_fsm.h"
49 #include "bgpd/bgp_debug.h"
50 #include "bgpd/bgp_errors.h"
51 #include "bgpd/bgp_mpath.h"
52 #include "bgpd/bgp_nexthop.h"
53 #include "bgpd/bgp_nht.h"
54 #include "bgpd/bgp_bfd.h"
55 #include "bgpd/bgp_label.h"
57 #include "bgpd/rfapi/rfapi_backend.h"
58 #include "bgpd/rfapi/vnc_export_bgp.h"
60 #include "bgpd/bgp_evpn.h"
61 #include "bgpd/bgp_mplsvpn.h"
62 #include "bgpd/bgp_labelpool.h"
63 #include "bgpd/bgp_pbr.h"
64 #include "bgpd/bgp_evpn_private.h"
65 #include "bgpd/bgp_evpn_mh.h"
66 #include "bgpd/bgp_mac.h"
67 #include "bgpd/bgp_trace.h"
68 #include "bgpd/bgp_community.h"
69 #include "bgpd/bgp_lcommunity.h"
71 /* All information about zebra. */
72 struct zclient
*zclient
= NULL
;
74 /* hook to indicate vrf status change for SNMP */
75 DEFINE_HOOK(bgp_vrf_status_changed
, (struct bgp
*bgp
, struct interface
*ifp
),
78 /* Can we install into zebra? */
79 static inline bool bgp_install_info_to_zebra(struct bgp
*bgp
)
81 if (zclient
->sock
<= 0)
84 if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp
)) {
86 "%s: No zebra instance to talk to, not installing information",
94 int zclient_num_connects
;
96 /* Router-id update message from zebra. */
97 static int bgp_router_id_update(ZAPI_CALLBACK_ARGS
)
99 struct prefix router_id
;
101 zebra_router_id_update_read(zclient
->ibuf
, &router_id
);
103 if (BGP_DEBUG(zebra
, ZEBRA
))
104 zlog_debug("Rx Router Id update VRF %u Id %pFX", vrf_id
,
107 bgp_router_id_zebra_bump(vrf_id
, &router_id
);
111 /* Nexthop update message from zebra. */
112 static int bgp_read_nexthop_update(ZAPI_CALLBACK_ARGS
)
114 bgp_parse_nexthop_update(cmd
, vrf_id
);
118 /* Set or clear interface on which unnumbered neighbor is configured. This
119 * would in turn cause BGP to initiate or turn off IPv6 RAs on this
122 static void bgp_update_interface_nbrs(struct bgp
*bgp
, struct interface
*ifp
,
123 struct interface
*upd_ifp
)
125 struct listnode
*node
, *nnode
;
128 for (ALL_LIST_ELEMENTS(bgp
->peer
, node
, nnode
, peer
)) {
129 if (peer
->conf_if
&& (strcmp(peer
->conf_if
, ifp
->name
) == 0)) {
132 bgp_zebra_initiate_radv(bgp
, peer
);
134 bgp_zebra_terminate_radv(bgp
, peer
);
141 static int bgp_read_fec_update(ZAPI_CALLBACK_ARGS
)
143 bgp_parse_fec_update();
147 static void bgp_start_interface_nbrs(struct bgp
*bgp
, struct interface
*ifp
)
149 struct listnode
*node
, *nnode
;
152 for (ALL_LIST_ELEMENTS(bgp
->peer
, node
, nnode
, peer
)) {
153 if (peer
->conf_if
&& (strcmp(peer
->conf_if
, ifp
->name
) == 0)
154 && !peer_established(peer
)) {
155 if (peer_active(peer
))
156 BGP_EVENT_ADD(peer
, BGP_Stop
);
157 BGP_EVENT_ADD(peer
, BGP_Start
);
162 static void bgp_nbr_connected_add(struct bgp
*bgp
, struct nbr_connected
*ifc
)
164 struct listnode
*node
;
165 struct connected
*connected
;
166 struct interface
*ifp
;
169 /* Kick-off the FSM for any relevant peers only if there is a
170 * valid local address on the interface.
173 for (ALL_LIST_ELEMENTS_RO(ifp
->connected
, node
, connected
)) {
174 p
= connected
->address
;
175 if (p
->family
== AF_INET6
176 && IN6_IS_ADDR_LINKLOCAL(&p
->u
.prefix6
))
182 bgp_start_interface_nbrs(bgp
, ifp
);
185 static void bgp_nbr_connected_delete(struct bgp
*bgp
, struct nbr_connected
*ifc
,
188 struct listnode
*node
, *nnode
;
190 struct interface
*ifp
;
192 for (ALL_LIST_ELEMENTS(bgp
->peer
, node
, nnode
, peer
)) {
194 && (strcmp(peer
->conf_if
, ifc
->ifp
->name
) == 0)) {
195 peer
->last_reset
= PEER_DOWN_NBR_ADDR_DEL
;
196 BGP_EVENT_ADD(peer
, BGP_Stop
);
199 /* Free neighbor also, if we're asked to. */
202 listnode_delete(ifp
->nbr_connected
, ifc
);
203 nbr_connected_free(ifc
);
207 static int bgp_ifp_destroy(struct interface
*ifp
)
211 bgp
= ifp
->vrf
->info
;
213 if (BGP_DEBUG(zebra
, ZEBRA
))
214 zlog_debug("Rx Intf del VRF %u IF %s", ifp
->vrf
->vrf_id
,
218 bgp_update_interface_nbrs(bgp
, ifp
, NULL
);
219 hook_call(bgp_vrf_status_changed
, bgp
, ifp
);
222 bgp_mac_del_mac_entry(ifp
);
227 static int bgp_ifp_up(struct interface
*ifp
)
230 struct nbr_connected
*nc
;
231 struct listnode
*node
, *nnode
;
234 bgp
= ifp
->vrf
->info
;
236 bgp_mac_add_mac_entry(ifp
);
238 if (BGP_DEBUG(zebra
, ZEBRA
))
239 zlog_debug("Rx Intf up VRF %u IF %s", ifp
->vrf
->vrf_id
,
245 for (ALL_LIST_ELEMENTS(ifp
->connected
, node
, nnode
, c
))
246 bgp_connected_add(bgp
, c
);
248 for (ALL_LIST_ELEMENTS(ifp
->nbr_connected
, node
, nnode
, nc
))
249 bgp_nbr_connected_add(bgp
, nc
);
251 hook_call(bgp_vrf_status_changed
, bgp
, ifp
);
257 static int bgp_ifp_down(struct interface
*ifp
)
260 struct nbr_connected
*nc
;
261 struct listnode
*node
, *nnode
;
265 bgp
= ifp
->vrf
->info
;
267 bgp_mac_del_mac_entry(ifp
);
269 if (BGP_DEBUG(zebra
, ZEBRA
))
270 zlog_debug("Rx Intf down VRF %u IF %s", ifp
->vrf
->vrf_id
,
276 for (ALL_LIST_ELEMENTS(ifp
->connected
, node
, nnode
, c
))
277 bgp_connected_delete(bgp
, c
);
279 for (ALL_LIST_ELEMENTS(ifp
->nbr_connected
, node
, nnode
, nc
))
280 bgp_nbr_connected_delete(bgp
, nc
, 1);
282 /* Fast external-failover */
283 if (!CHECK_FLAG(bgp
->flags
, BGP_FLAG_NO_FAST_EXT_FAILOVER
)) {
285 for (ALL_LIST_ELEMENTS(bgp
->peer
, node
, nnode
, peer
)) {
286 /* Take down directly connected peers. */
287 if ((peer
->ttl
!= BGP_DEFAULT_TTL
)
288 && (peer
->gtsm_hops
!= BGP_GTSM_HOPS_CONNECTED
))
291 if (ifp
== peer
->nexthop
.ifp
) {
292 BGP_EVENT_ADD(peer
, BGP_Stop
);
293 peer
->last_reset
= PEER_DOWN_IF_DOWN
;
298 hook_call(bgp_vrf_status_changed
, bgp
, ifp
);
299 bgp_nht_ifp_down(ifp
);
304 static int bgp_interface_address_add(ZAPI_CALLBACK_ARGS
)
306 struct connected
*ifc
;
309 bgp
= bgp_lookup_by_vrf_id(vrf_id
);
311 ifc
= zebra_interface_address_read(cmd
, zclient
->ibuf
, vrf_id
);
316 if (bgp_debug_zebra(ifc
->address
))
317 zlog_debug("Rx Intf address add VRF %u IF %s addr %pFX", vrf_id
,
318 ifc
->ifp
->name
, ifc
->address
);
323 if (if_is_operative(ifc
->ifp
)) {
324 bgp_connected_add(bgp
, ifc
);
326 /* If we have learnt of any neighbors on this interface,
327 * check to kick off any BGP interface-based neighbors,
328 * but only if this is a link-local address.
330 if (IN6_IS_ADDR_LINKLOCAL(&ifc
->address
->u
.prefix6
)
331 && !list_isempty(ifc
->ifp
->nbr_connected
))
332 bgp_start_interface_nbrs(bgp
, ifc
->ifp
);
338 static int bgp_interface_address_delete(ZAPI_CALLBACK_ARGS
)
340 struct listnode
*node
, *nnode
;
341 struct connected
*ifc
;
346 bgp
= bgp_lookup_by_vrf_id(vrf_id
);
348 ifc
= zebra_interface_address_read(cmd
, zclient
->ibuf
, vrf_id
);
353 if (bgp_debug_zebra(ifc
->address
))
354 zlog_debug("Rx Intf address del VRF %u IF %s addr %pFX", vrf_id
,
355 ifc
->ifp
->name
, ifc
->address
);
357 if (bgp
&& if_is_operative(ifc
->ifp
)) {
358 bgp_connected_delete(bgp
, ifc
);
365 * When we are using the v6 global as part of the peering
366 * nexthops and we are removing it, then we need to
367 * clear the peer data saved for that nexthop and
368 * cause a re-announcement of the route. Since
369 * we do not want the peering to bounce.
371 for (ALL_LIST_ELEMENTS(bgp
->peer
, node
, nnode
, peer
)) {
375 if (addr
->family
== AF_INET
)
378 if (!IN6_IS_ADDR_LINKLOCAL(&addr
->u
.prefix6
)
379 && memcmp(&peer
->nexthop
.v6_global
,
380 &addr
->u
.prefix6
, 16)
382 memset(&peer
->nexthop
.v6_global
, 0, 16);
383 FOREACH_AFI_SAFI (afi
, safi
)
384 bgp_announce_route(peer
, afi
, safi
,
390 connected_free(&ifc
);
395 static int bgp_interface_nbr_address_add(ZAPI_CALLBACK_ARGS
)
397 struct nbr_connected
*ifc
= NULL
;
400 ifc
= zebra_interface_nbr_address_read(cmd
, zclient
->ibuf
, vrf_id
);
405 if (bgp_debug_zebra(ifc
->address
))
406 zlog_debug("Rx Intf neighbor add VRF %u IF %s addr %pFX",
407 vrf_id
, ifc
->ifp
->name
, ifc
->address
);
409 if (if_is_operative(ifc
->ifp
)) {
410 bgp
= bgp_lookup_by_vrf_id(vrf_id
);
412 bgp_nbr_connected_add(bgp
, ifc
);
418 static int bgp_interface_nbr_address_delete(ZAPI_CALLBACK_ARGS
)
420 struct nbr_connected
*ifc
= NULL
;
423 ifc
= zebra_interface_nbr_address_read(cmd
, zclient
->ibuf
, vrf_id
);
428 if (bgp_debug_zebra(ifc
->address
))
429 zlog_debug("Rx Intf neighbor del VRF %u IF %s addr %pFX",
430 vrf_id
, ifc
->ifp
->name
, ifc
->address
);
432 if (if_is_operative(ifc
->ifp
)) {
433 bgp
= bgp_lookup_by_vrf_id(vrf_id
);
435 bgp_nbr_connected_delete(bgp
, ifc
, 0);
438 nbr_connected_free(ifc
);
443 /* VRF update for an interface. */
444 static int bgp_interface_vrf_update(ZAPI_CALLBACK_ARGS
)
446 struct interface
*ifp
;
449 struct nbr_connected
*nc
;
450 struct listnode
*node
, *nnode
;
454 ifp
= zebra_interface_vrf_update_read(zclient
->ibuf
, vrf_id
,
459 if (BGP_DEBUG(zebra
, ZEBRA
) && ifp
)
460 zlog_debug("Rx Intf VRF change VRF %u IF %s NewVRF %u", vrf_id
,
461 ifp
->name
, new_vrf_id
);
463 bgp
= bgp_lookup_by_vrf_id(vrf_id
);
466 for (ALL_LIST_ELEMENTS(ifp
->connected
, node
, nnode
, c
))
467 bgp_connected_delete(bgp
, c
);
469 for (ALL_LIST_ELEMENTS(ifp
->nbr_connected
, node
, nnode
, nc
))
470 bgp_nbr_connected_delete(bgp
, nc
, 1);
472 /* Fast external-failover */
473 if (!CHECK_FLAG(bgp
->flags
, BGP_FLAG_NO_FAST_EXT_FAILOVER
)) {
474 for (ALL_LIST_ELEMENTS(bgp
->peer
, node
, nnode
, peer
)) {
475 if ((peer
->ttl
!= BGP_DEFAULT_TTL
)
477 != BGP_GTSM_HOPS_CONNECTED
))
480 if (ifp
== peer
->nexthop
.ifp
)
481 BGP_EVENT_ADD(peer
, BGP_Stop
);
486 if_update_to_new_vrf(ifp
, new_vrf_id
);
488 bgp
= bgp_lookup_by_vrf_id(new_vrf_id
);
492 for (ALL_LIST_ELEMENTS(ifp
->connected
, node
, nnode
, c
))
493 bgp_connected_add(bgp
, c
);
495 for (ALL_LIST_ELEMENTS(ifp
->nbr_connected
, node
, nnode
, nc
))
496 bgp_nbr_connected_add(bgp
, nc
);
498 hook_call(bgp_vrf_status_changed
, bgp
, ifp
);
502 /* Zebra route add and delete treatment. */
503 static int zebra_read_route(ZAPI_CALLBACK_ARGS
)
505 enum nexthop_types_t nhtype
;
506 enum blackhole_type bhtype
= BLACKHOLE_UNSPEC
;
507 struct zapi_route api
;
508 union g_addr nexthop
= {};
513 bgp
= bgp_lookup_by_vrf_id(vrf_id
);
517 if (zapi_route_decode(zclient
->ibuf
, &api
) < 0)
520 /* we completely ignore srcdest routes for now. */
521 if (CHECK_FLAG(api
.message
, ZAPI_MESSAGE_SRCPFX
))
524 /* ignore link-local address. */
525 if (api
.prefix
.family
== AF_INET6
526 && IN6_IS_ADDR_LINKLOCAL(&api
.prefix
.u
.prefix6
))
529 ifindex
= api
.nexthops
[0].ifindex
;
530 nhtype
= api
.nexthops
[0].type
;
532 /* api_nh structure has union of gate and bh_type */
533 if (nhtype
== NEXTHOP_TYPE_BLACKHOLE
) {
534 /* bh_type is only applicable if NEXTHOP_TYPE_BLACKHOLE*/
535 bhtype
= api
.nexthops
[0].bh_type
;
537 nexthop
= api
.nexthops
[0].gate
;
539 add
= (cmd
== ZEBRA_REDISTRIBUTE_ROUTE_ADD
);
542 * The ADD message is actually an UPDATE and there is no
544 * for a prior redistributed route, if any. So, perform an
546 * DEL processing for the same redistributed route from any
550 for (i
= 0; i
< ZEBRA_ROUTE_MAX
; i
++) {
552 bgp_redistribute_delete(bgp
, &api
.prefix
, i
,
556 /* Now perform the add/update. */
557 bgp_redistribute_add(bgp
, &api
.prefix
, &nexthop
, ifindex
,
558 nhtype
, bhtype
, api
.distance
, api
.metric
,
559 api
.type
, api
.instance
, api
.tag
);
561 bgp_redistribute_delete(bgp
, &api
.prefix
, api
.type
,
565 if (bgp_debug_zebra(&api
.prefix
)) {
566 char buf
[PREFIX_STRLEN
];
569 inet_ntop(api
.prefix
.family
, &nexthop
, buf
,
572 "Rx route ADD VRF %u %s[%d] %pFX nexthop %s (type %d if %u) metric %u distance %u tag %" ROUTE_TAG_PRI
,
573 vrf_id
, zebra_route_string(api
.type
),
574 api
.instance
, &api
.prefix
, buf
, nhtype
, ifindex
,
575 api
.metric
, api
.distance
, api
.tag
);
577 zlog_debug("Rx route DEL VRF %u %s[%d] %pFX", vrf_id
,
578 zebra_route_string(api
.type
), api
.instance
,
586 struct interface
*if_lookup_by_ipv4(struct in_addr
*addr
, vrf_id_t vrf_id
)
589 struct listnode
*cnode
;
590 struct interface
*ifp
;
591 struct connected
*connected
;
592 struct prefix_ipv4 p
;
595 vrf
= vrf_lookup_by_id(vrf_id
);
601 p
.prefixlen
= IPV4_MAX_BITLEN
;
603 FOR_ALL_INTERFACES (vrf
, ifp
) {
604 for (ALL_LIST_ELEMENTS_RO(ifp
->connected
, cnode
, connected
)) {
605 cp
= connected
->address
;
607 if (cp
->family
== AF_INET
)
608 if (prefix_match(cp
, (struct prefix
*)&p
))
615 struct interface
*if_lookup_by_ipv4_exact(struct in_addr
*addr
, vrf_id_t vrf_id
)
618 struct listnode
*cnode
;
619 struct interface
*ifp
;
620 struct connected
*connected
;
623 vrf
= vrf_lookup_by_id(vrf_id
);
627 FOR_ALL_INTERFACES (vrf
, ifp
) {
628 for (ALL_LIST_ELEMENTS_RO(ifp
->connected
, cnode
, connected
)) {
629 cp
= connected
->address
;
631 if (cp
->family
== AF_INET
)
632 if (IPV4_ADDR_SAME(&cp
->u
.prefix4
, addr
))
639 struct interface
*if_lookup_by_ipv6(struct in6_addr
*addr
, ifindex_t ifindex
,
643 struct listnode
*cnode
;
644 struct interface
*ifp
;
645 struct connected
*connected
;
646 struct prefix_ipv6 p
;
649 vrf
= vrf_lookup_by_id(vrf_id
);
655 p
.prefixlen
= IPV6_MAX_BITLEN
;
657 FOR_ALL_INTERFACES (vrf
, ifp
) {
658 for (ALL_LIST_ELEMENTS_RO(ifp
->connected
, cnode
, connected
)) {
659 cp
= connected
->address
;
661 if (cp
->family
== AF_INET6
)
662 if (prefix_match(cp
, (struct prefix
*)&p
)) {
663 if (IN6_IS_ADDR_LINKLOCAL(
665 if (ifindex
== ifp
->ifindex
)
675 struct interface
*if_lookup_by_ipv6_exact(struct in6_addr
*addr
,
676 ifindex_t ifindex
, vrf_id_t vrf_id
)
679 struct listnode
*cnode
;
680 struct interface
*ifp
;
681 struct connected
*connected
;
684 vrf
= vrf_lookup_by_id(vrf_id
);
688 FOR_ALL_INTERFACES (vrf
, ifp
) {
689 for (ALL_LIST_ELEMENTS_RO(ifp
->connected
, cnode
, connected
)) {
690 cp
= connected
->address
;
692 if (cp
->family
== AF_INET6
)
693 if (IPV6_ADDR_SAME(&cp
->u
.prefix6
, addr
)) {
694 if (IN6_IS_ADDR_LINKLOCAL(
696 if (ifindex
== ifp
->ifindex
)
706 static int if_get_ipv6_global(struct interface
*ifp
, struct in6_addr
*addr
)
708 struct listnode
*cnode
;
709 struct connected
*connected
;
712 for (ALL_LIST_ELEMENTS_RO(ifp
->connected
, cnode
, connected
)) {
713 cp
= connected
->address
;
715 if (cp
->family
== AF_INET6
)
716 if (!IN6_IS_ADDR_LINKLOCAL(&cp
->u
.prefix6
)) {
717 memcpy(addr
, &cp
->u
.prefix6
, IPV6_MAX_BYTELEN
);
724 static bool if_get_ipv6_local(struct interface
*ifp
, struct in6_addr
*addr
)
726 struct listnode
*cnode
;
727 struct connected
*connected
;
730 for (ALL_LIST_ELEMENTS_RO(ifp
->connected
, cnode
, connected
)) {
731 cp
= connected
->address
;
733 if (cp
->family
== AF_INET6
)
734 if (IN6_IS_ADDR_LINKLOCAL(&cp
->u
.prefix6
)) {
735 memcpy(addr
, &cp
->u
.prefix6
, IPV6_MAX_BYTELEN
);
742 static int if_get_ipv4_address(struct interface
*ifp
, struct in_addr
*addr
)
744 struct listnode
*cnode
;
745 struct connected
*connected
;
748 for (ALL_LIST_ELEMENTS_RO(ifp
->connected
, cnode
, connected
)) {
749 cp
= connected
->address
;
750 if ((cp
->family
== AF_INET
)
751 && !ipv4_martian(&(cp
->u
.prefix4
))) {
752 *addr
= cp
->u
.prefix4
;
760 bool bgp_zebra_nexthop_set(union sockunion
*local
, union sockunion
*remote
,
761 struct bgp_nexthop
*nexthop
, struct peer
*peer
)
764 struct interface
*ifp
= NULL
;
765 bool v6_ll_avail
= true;
767 memset(nexthop
, 0, sizeof(struct bgp_nexthop
));
774 if (local
->sa
.sa_family
== AF_INET
) {
775 nexthop
->v4
= local
->sin
.sin_addr
;
777 ifp
= if_lookup_by_name(peer
->update_if
,
780 ifp
= if_lookup_by_ipv4_exact(&local
->sin
.sin_addr
,
783 if (local
->sa
.sa_family
== AF_INET6
) {
784 memcpy(&nexthop
->v6_global
, &local
->sin6
.sin6_addr
, IPV6_MAX_BYTELEN
);
785 if (IN6_IS_ADDR_LINKLOCAL(&local
->sin6
.sin6_addr
)) {
786 if (peer
->conf_if
|| peer
->ifname
)
787 ifp
= if_lookup_by_name(peer
->conf_if
791 else if (peer
->update_if
)
792 ifp
= if_lookup_by_name(peer
->update_if
,
794 } else if (peer
->update_if
)
795 ifp
= if_lookup_by_name(peer
->update_if
,
798 ifp
= if_lookup_by_ipv6_exact(&local
->sin6
.sin6_addr
,
799 local
->sin6
.sin6_scope_id
,
805 * BGP views do not currently get proper data
806 * from zebra( when attached ) to be able to
807 * properly resolve nexthops, so give this
808 * instance type a pass.
810 if (peer
->bgp
->inst_type
== BGP_INSTANCE_TYPE_VIEW
)
813 * If we have no interface data but we have established
814 * some connection w/ zebra than something has gone
815 * terribly terribly wrong here, so say this failed
816 * If we do not any zebra connection then not
817 * having a ifp pointer is ok.
819 return zclient_num_connects
? false : true;
824 /* IPv4 connection, fetch and store IPv6 local address(es) if any. */
825 if (local
->sa
.sa_family
== AF_INET
) {
827 ret
= if_get_ipv6_global(ifp
, &nexthop
->v6_global
);
830 /* There is no global nexthop. Use link-local address as
832 * global and link-local nexthop. In this scenario, the
834 * for interop is that the network admin would use a
836 * specify the global IPv6 nexthop.
839 if_get_ipv6_local(ifp
, &nexthop
->v6_global
);
840 memcpy(&nexthop
->v6_local
, &nexthop
->v6_global
,
844 if_get_ipv6_local(ifp
, &nexthop
->v6_local
);
847 * If we are a v4 connection and we are not doing unnumbered
848 * not having a v6 LL address is ok
850 if (!v6_ll_avail
&& !peer
->conf_if
)
852 if (if_lookup_by_ipv4(&remote
->sin
.sin_addr
, peer
->bgp
->vrf_id
))
853 peer
->shared_network
= 1;
855 peer
->shared_network
= 0;
858 /* IPv6 connection, fetch and store IPv4 local address if any. */
859 if (local
->sa
.sa_family
== AF_INET6
) {
860 struct interface
*direct
= NULL
;
863 ret
= if_get_ipv4_address(ifp
, &nexthop
->v4
);
864 if (!ret
&& peer
->local_id
.s_addr
!= INADDR_ANY
)
865 nexthop
->v4
= peer
->local_id
;
868 if (!IN6_IS_ADDR_LINKLOCAL(&local
->sin6
.sin6_addr
)) {
869 memcpy(&nexthop
->v6_global
, &local
->sin6
.sin6_addr
,
872 /* If directory connected set link-local address. */
873 direct
= if_lookup_by_ipv6(&remote
->sin6
.sin6_addr
,
874 remote
->sin6
.sin6_scope_id
,
877 v6_ll_avail
= if_get_ipv6_local(
878 ifp
, &nexthop
->v6_local
);
880 * It's fine to not have a v6 LL when using
881 * update-source loopback/vrf
883 if (!v6_ll_avail
&& if_is_loopback(ifp
))
886 /* Link-local address. */
888 ret
= if_get_ipv6_global(ifp
, &nexthop
->v6_global
);
890 /* If there is no global address. Set link-local
892 global. I know this break RFC specification... */
893 /* In this scenario, the expectation for interop is that
895 * network admin would use a route-map to specify the
900 memcpy(&nexthop
->v6_global
,
901 &local
->sin6
.sin6_addr
,
903 /* Always set the link-local address */
904 memcpy(&nexthop
->v6_local
, &local
->sin6
.sin6_addr
,
908 if (IN6_IS_ADDR_LINKLOCAL(&local
->sin6
.sin6_addr
)
909 || if_lookup_by_ipv6(&remote
->sin6
.sin6_addr
,
910 remote
->sin6
.sin6_scope_id
,
912 peer
->shared_network
= 1;
914 peer
->shared_network
= 0;
917 /* KAME stack specific treatment. */
919 if (IN6_IS_ADDR_LINKLOCAL(&nexthop
->v6_global
)
920 && IN6_LINKLOCAL_IFINDEX(nexthop
->v6_global
)) {
921 SET_IN6_LINKLOCAL_IFINDEX(nexthop
->v6_global
, 0);
923 if (IN6_IS_ADDR_LINKLOCAL(&nexthop
->v6_local
)
924 && IN6_LINKLOCAL_IFINDEX(nexthop
->v6_local
)) {
925 SET_IN6_LINKLOCAL_IFINDEX(nexthop
->v6_local
, 0);
929 /* If we have identified the local interface, there is no error for now.
934 static struct in6_addr
*
935 bgp_path_info_to_ipv6_nexthop(struct bgp_path_info
*path
, ifindex_t
*ifindex
)
937 struct in6_addr
*nexthop
= NULL
;
939 /* Only global address nexthop exists. */
940 if (path
->attr
->mp_nexthop_len
== BGP_ATTR_NHLEN_IPV6_GLOBAL
941 || path
->attr
->mp_nexthop_len
== BGP_ATTR_NHLEN_VPNV6_GLOBAL
) {
942 nexthop
= &path
->attr
->mp_nexthop_global
;
943 if (IN6_IS_ADDR_LINKLOCAL(nexthop
))
944 *ifindex
= path
->attr
->nh_ifindex
;
947 /* If both global and link-local address present. */
948 if (path
->attr
->mp_nexthop_len
== BGP_ATTR_NHLEN_IPV6_GLOBAL_AND_LL
949 || path
->attr
->mp_nexthop_len
950 == BGP_ATTR_NHLEN_VPNV6_GLOBAL_AND_LL
) {
951 /* Check if route-map is set to prefer global over link-local */
952 if (path
->attr
->mp_nexthop_prefer_global
) {
953 nexthop
= &path
->attr
->mp_nexthop_global
;
954 if (IN6_IS_ADDR_LINKLOCAL(nexthop
))
955 *ifindex
= path
->attr
->nh_ifindex
;
957 /* Workaround for Cisco's nexthop bug. */
958 if (IN6_IS_ADDR_UNSPECIFIED(
959 &path
->attr
->mp_nexthop_global
)
960 && path
->peer
->su_remote
961 && path
->peer
->su_remote
->sa
.sa_family
964 &path
->peer
->su_remote
->sin6
.sin6_addr
;
965 if (IN6_IS_ADDR_LINKLOCAL(nexthop
))
966 *ifindex
= path
->peer
->nexthop
.ifp
969 nexthop
= &path
->attr
->mp_nexthop_local
;
970 if (IN6_IS_ADDR_LINKLOCAL(nexthop
))
971 *ifindex
= path
->attr
->nh_lla_ifindex
;
979 static bool bgp_table_map_apply(struct route_map
*map
, const struct prefix
*p
,
980 struct bgp_path_info
*path
)
982 route_map_result_t ret
;
984 ret
= route_map_apply(map
, p
, path
);
985 bgp_attr_flush(path
->attr
);
987 if (ret
!= RMAP_DENYMATCH
)
990 if (bgp_debug_zebra(p
)) {
991 if (p
->family
== AF_INET
) {
993 "Zebra rmap deny: IPv4 route %pFX nexthop %pI4",
994 p
, &path
->attr
->nexthop
);
996 if (p
->family
== AF_INET6
) {
997 char buf
[2][INET6_ADDRSTRLEN
];
999 struct in6_addr
*nexthop
;
1001 nexthop
= bgp_path_info_to_ipv6_nexthop(path
, &ifindex
);
1003 "Zebra rmap deny: IPv6 route %pFX nexthop %s",
1005 nexthop
? inet_ntop(AF_INET6
, nexthop
, buf
[1],
1007 : inet_ntop(AF_INET
,
1008 &path
->attr
->nexthop
,
1009 buf
[1], sizeof(buf
[1])));
1015 static struct thread
*bgp_tm_thread_connect
;
1016 static bool bgp_tm_status_connected
;
1017 static bool bgp_tm_chunk_obtained
;
1018 #define BGP_FLOWSPEC_TABLE_CHUNK 100000
1019 static uint32_t bgp_tm_min
, bgp_tm_max
, bgp_tm_chunk_size
;
1020 struct bgp
*bgp_tm_bgp
;
1022 static int bgp_zebra_tm_connect(struct thread
*t
)
1024 struct zclient
*zclient
;
1025 int delay
= 10, ret
= 0;
1027 zclient
= THREAD_ARG(t
);
1028 if (bgp_tm_status_connected
&& zclient
->sock
> 0)
1031 bgp_tm_status_connected
= false;
1032 ret
= tm_table_manager_connect(zclient
);
1035 zlog_info("Error connecting to table manager!");
1036 bgp_tm_status_connected
= false;
1038 if (!bgp_tm_status_connected
)
1039 zlog_debug("Connecting to table manager. Success");
1040 bgp_tm_status_connected
= true;
1041 if (!bgp_tm_chunk_obtained
) {
1042 if (bgp_zebra_get_table_range(bgp_tm_chunk_size
,
1044 &bgp_tm_max
) >= 0) {
1045 bgp_tm_chunk_obtained
= true;
1046 /* parse non installed entries */
1047 bgp_zebra_announce_table(bgp_tm_bgp
, AFI_IP
, SAFI_FLOWSPEC
);
1051 thread_add_timer(bm
->master
, bgp_zebra_tm_connect
, zclient
, delay
,
1052 &bgp_tm_thread_connect
);
1056 bool bgp_zebra_tm_chunk_obtained(void)
1058 return bgp_tm_chunk_obtained
;
1061 uint32_t bgp_zebra_tm_get_id(void)
1063 static int table_id
;
1065 if (!bgp_tm_chunk_obtained
)
1067 return bgp_tm_min
++;
1070 void bgp_zebra_init_tm_connect(struct bgp
*bgp
)
1074 /* if already set, do nothing
1076 if (bgp_tm_thread_connect
!= NULL
)
1078 bgp_tm_status_connected
= false;
1079 bgp_tm_chunk_obtained
= false;
1080 bgp_tm_min
= bgp_tm_max
= 0;
1081 bgp_tm_chunk_size
= BGP_FLOWSPEC_TABLE_CHUNK
;
1083 thread_add_timer(bm
->master
, bgp_zebra_tm_connect
, zclient
, delay
,
1084 &bgp_tm_thread_connect
);
1087 int bgp_zebra_get_table_range(uint32_t chunk_size
,
1088 uint32_t *start
, uint32_t *end
)
1092 if (!bgp_tm_status_connected
)
1094 ret
= tm_get_table_chunk(zclient
, chunk_size
, start
, end
);
1096 flog_err(EC_BGP_TABLE_CHUNK
,
1097 "BGP: Error getting table chunk %u", chunk_size
);
1100 zlog_info("BGP: Table Manager returns range from chunk %u is [%u %u]",
1101 chunk_size
, *start
, *end
);
1105 static bool update_ipv4nh_for_route_install(int nh_othervrf
, struct bgp
*nh_bgp
,
1106 struct in_addr
*nexthop
,
1107 struct attr
*attr
, bool is_evpn
,
1108 struct zapi_nexthop
*api_nh
)
1110 api_nh
->gate
.ipv4
= *nexthop
;
1111 api_nh
->vrf_id
= nh_bgp
->vrf_id
;
1113 /* Need to set fields appropriately for EVPN routes imported into
1114 * a VRF (which are programmed as onlink on l3-vni SVI) as well as
1115 * connected routes leaked into a VRF.
1117 if (attr
->nh_type
== NEXTHOP_TYPE_BLACKHOLE
) {
1118 api_nh
->type
= attr
->nh_type
;
1119 api_nh
->bh_type
= attr
->bh_type
;
1120 } else if (is_evpn
) {
1122 * If the nexthop is EVPN overlay index gateway IP,
1123 * treat the nexthop as NEXTHOP_TYPE_IPV4
1124 * Else, mark the nexthop as onlink.
1126 if (attr
->evpn_overlay
.type
== OVERLAY_INDEX_GATEWAY_IP
)
1127 api_nh
->type
= NEXTHOP_TYPE_IPV4
;
1129 api_nh
->type
= NEXTHOP_TYPE_IPV4_IFINDEX
;
1130 SET_FLAG(api_nh
->flags
, ZAPI_NEXTHOP_FLAG_ONLINK
);
1131 api_nh
->ifindex
= nh_bgp
->l3vni_svi_ifindex
;
1133 } else if (nh_othervrf
&& api_nh
->gate
.ipv4
.s_addr
== INADDR_ANY
) {
1134 api_nh
->type
= NEXTHOP_TYPE_IFINDEX
;
1135 api_nh
->ifindex
= attr
->nh_ifindex
;
1137 api_nh
->type
= NEXTHOP_TYPE_IPV4
;
1142 static bool update_ipv6nh_for_route_install(int nh_othervrf
, struct bgp
*nh_bgp
,
1143 struct in6_addr
*nexthop
,
1145 struct bgp_path_info
*pi
,
1146 struct bgp_path_info
*best_pi
,
1148 struct zapi_nexthop
*api_nh
)
1153 api_nh
->vrf_id
= nh_bgp
->vrf_id
;
1155 if (attr
->nh_type
== NEXTHOP_TYPE_BLACKHOLE
) {
1156 api_nh
->type
= attr
->nh_type
;
1157 api_nh
->bh_type
= attr
->bh_type
;
1158 } else if (is_evpn
) {
1160 * If the nexthop is EVPN overlay index gateway IP,
1161 * treat the nexthop as NEXTHOP_TYPE_IPV4
1162 * Else, mark the nexthop as onlink.
1164 if (attr
->evpn_overlay
.type
== OVERLAY_INDEX_GATEWAY_IP
)
1165 api_nh
->type
= NEXTHOP_TYPE_IPV6
;
1167 api_nh
->type
= NEXTHOP_TYPE_IPV6_IFINDEX
;
1168 SET_FLAG(api_nh
->flags
, ZAPI_NEXTHOP_FLAG_ONLINK
);
1169 api_nh
->ifindex
= nh_bgp
->l3vni_svi_ifindex
;
1171 } else if (nh_othervrf
) {
1172 if (IN6_IS_ADDR_UNSPECIFIED(nexthop
)) {
1173 api_nh
->type
= NEXTHOP_TYPE_IFINDEX
;
1174 api_nh
->ifindex
= attr
->nh_ifindex
;
1175 } else if (IN6_IS_ADDR_LINKLOCAL(nexthop
)) {
1178 api_nh
->type
= NEXTHOP_TYPE_IPV6_IFINDEX
;
1179 api_nh
->ifindex
= ifindex
;
1181 api_nh
->type
= NEXTHOP_TYPE_IPV6
;
1182 api_nh
->ifindex
= 0;
1185 if (IN6_IS_ADDR_LINKLOCAL(nexthop
)) {
1187 && attr
->mp_nexthop_len
1188 == BGP_ATTR_NHLEN_IPV6_GLOBAL_AND_LL
)
1189 if (pi
->peer
->nexthop
.ifp
)
1191 pi
->peer
->nexthop
.ifp
->ifindex
;
1193 if (pi
->peer
->conf_if
)
1194 ifindex
= pi
->peer
->ifp
->ifindex
;
1195 else if (pi
->peer
->ifname
)
1196 ifindex
= ifname2ifindex(
1198 pi
->peer
->bgp
->vrf_id
);
1199 else if (pi
->peer
->nexthop
.ifp
)
1201 pi
->peer
->nexthop
.ifp
->ifindex
;
1206 api_nh
->type
= NEXTHOP_TYPE_IPV6_IFINDEX
;
1207 api_nh
->ifindex
= ifindex
;
1209 api_nh
->type
= NEXTHOP_TYPE_IPV6
;
1210 api_nh
->ifindex
= 0;
1213 /* api_nh structure has union of gate and bh_type */
1214 if (nexthop
&& api_nh
->type
!= NEXTHOP_TYPE_BLACKHOLE
)
1215 api_nh
->gate
.ipv6
= *nexthop
;
1220 static bool bgp_zebra_use_nhop_weighted(struct bgp
*bgp
, struct attr
*attr
,
1221 uint64_t tot_bw
, uint32_t *nh_weight
)
1227 /* zero link-bandwidth and link-bandwidth not present are treated
1228 * as the same situation.
1231 /* the only situations should be if we're either told
1232 * to skip or use default weight.
1234 if (bgp
->lb_handling
== BGP_LINK_BW_SKIP_MISSING
)
1236 *nh_weight
= BGP_ZEBRA_DEFAULT_NHOP_WEIGHT
;
1238 tmp
= (uint64_t)bw
* 100;
1239 *nh_weight
= ((uint32_t)(tmp
/ tot_bw
));
1245 void bgp_zebra_announce(struct bgp_dest
*dest
, const struct prefix
*p
,
1246 struct bgp_path_info
*info
, struct bgp
*bgp
, afi_t afi
,
1249 struct zapi_route api
= { 0 };
1250 struct zapi_nexthop
*api_nh
;
1252 unsigned int valid_nh_count
= 0;
1253 bool allow_recursion
= false;
1256 struct bgp_path_info
*mpinfo
;
1257 struct bgp
*bgp_orig
;
1259 struct attr local_attr
;
1260 struct bgp_path_info local_info
;
1261 struct bgp_path_info
*mpinfo_cp
= &local_info
;
1264 int nh_othervrf
= 0;
1266 bool nh_updated
= false;
1268 uint64_t cum_bw
= 0;
1269 uint32_t nhg_id
= 0;
1272 /* Don't try to install if we're not connected to Zebra or Zebra doesn't
1273 * know of this instance.
1275 if (!bgp_install_info_to_zebra(bgp
))
1278 if (bgp
->main_zebra_update_hold
)
1281 if (safi
== SAFI_FLOWSPEC
) {
1282 bgp_pbr_update_entry(bgp
, bgp_dest_get_prefix(dest
), info
, afi
,
1288 * vrf leaking support (will have only one nexthop)
1290 if (info
->extra
&& info
->extra
->bgp_orig
)
1293 /* Make Zebra API structure. */
1294 api
.vrf_id
= bgp
->vrf_id
;
1295 api
.type
= ZEBRA_ROUTE_BGP
;
1298 SET_FLAG(api
.message
, ZAPI_MESSAGE_NEXTHOP
);
1302 if (info
->type
== ZEBRA_ROUTE_BGP
1303 && info
->sub_type
== BGP_ROUTE_IMPORTED
) {
1305 /* Obtain peer from parent */
1306 if (info
->extra
&& info
->extra
->parent
)
1307 peer
= ((struct bgp_path_info
*)(info
->extra
->parent
))
1311 tag
= info
->attr
->tag
;
1313 /* If the route's source is EVPN, flag as such. */
1314 is_evpn
= is_route_parent_evpn(info
);
1316 SET_FLAG(api
.flags
, ZEBRA_FLAG_EVPN_ROUTE
);
1318 if (peer
->sort
== BGP_PEER_IBGP
|| peer
->sort
== BGP_PEER_CONFED
1319 || info
->sub_type
== BGP_ROUTE_AGGREGATE
) {
1320 SET_FLAG(api
.flags
, ZEBRA_FLAG_IBGP
);
1321 SET_FLAG(api
.flags
, ZEBRA_FLAG_ALLOW_RECURSION
);
1324 if ((peer
->sort
== BGP_PEER_EBGP
&& peer
->ttl
!= BGP_DEFAULT_TTL
)
1325 || CHECK_FLAG(peer
->flags
, PEER_FLAG_DISABLE_CONNECTED_CHECK
)
1326 || CHECK_FLAG(bgp
->flags
, BGP_FLAG_DISABLE_NH_CONNECTED_CHK
))
1328 allow_recursion
= true;
1330 if (info
->attr
->rmap_table_id
) {
1331 SET_FLAG(api
.message
, ZAPI_MESSAGE_TABLEID
);
1332 api
.tableid
= info
->attr
->rmap_table_id
;
1335 if (CHECK_FLAG(info
->attr
->flag
, ATTR_FLAG_BIT(BGP_ATTR_SRTE_COLOR
)))
1336 SET_FLAG(api
.message
, ZAPI_MESSAGE_SRTE
);
1338 /* Metric is currently based on the best-path only */
1339 metric
= info
->attr
->med
;
1341 /* Determine if we're doing weighted ECMP or not */
1342 do_wt_ecmp
= bgp_path_info_mpath_chkwtd(bgp
, info
);
1344 cum_bw
= bgp_path_info_mpath_cumbw(info
);
1346 /* EVPN MAC-IP routes are installed with a L3 NHG id */
1347 if (bgp_evpn_path_es_use_nhg(bgp
, info
, &nhg_id
)) {
1351 SET_FLAG(api
.message
, ZAPI_MESSAGE_NHG
);
1356 for (; mpinfo
; mpinfo
= bgp_path_info_mpath_next(mpinfo
)) {
1359 if (valid_nh_count
>= multipath_num
)
1362 *mpinfo_cp
= *mpinfo
;
1365 /* Get nexthop address-family */
1366 if (p
->family
== AF_INET
1367 && !BGP_ATTR_NEXTHOP_AFI_IP6(mpinfo_cp
->attr
))
1368 nh_family
= AF_INET
;
1369 else if (p
->family
== AF_INET6
1370 || (p
->family
== AF_INET
1371 && BGP_ATTR_NEXTHOP_AFI_IP6(mpinfo_cp
->attr
)))
1372 nh_family
= AF_INET6
;
1376 /* If processing for weighted ECMP, determine the next hop's
1377 * weight. Based on user setting, we may skip the next hop
1378 * in some situations.
1381 if (!bgp_zebra_use_nhop_weighted(bgp
, mpinfo
->attr
,
1382 cum_bw
, &nh_weight
))
1385 api_nh
= &api
.nexthops
[valid_nh_count
];
1387 if (CHECK_FLAG(info
->attr
->flag
,
1388 ATTR_FLAG_BIT(BGP_ATTR_SRTE_COLOR
)))
1389 api_nh
->srte_color
= info
->attr
->srte_color
;
1391 if (bgp_debug_zebra(&api
.prefix
)) {
1392 if (mpinfo
->extra
) {
1393 zlog_debug("%s: p=%pFX, bgp_is_valid_label: %d",
1396 &mpinfo
->extra
->label
[0]));
1399 "%s: p=%pFX, extra is NULL, no label",
1404 if (bgp
->table_map
[afi
][safi
].name
) {
1405 /* Copy info and attributes, so the route-map
1406 apply doesn't modify the BGP route info. */
1407 local_attr
= *mpinfo
->attr
;
1408 mpinfo_cp
->attr
= &local_attr
;
1409 if (!bgp_table_map_apply(bgp
->table_map
[afi
][safi
].map
,
1413 /* metric/tag is only allowed to be
1414 * overridden on 1st nexthop */
1415 if (mpinfo
== info
) {
1416 metric
= mpinfo_cp
->attr
->med
;
1417 tag
= mpinfo_cp
->attr
->tag
;
1421 BGP_ORIGINAL_UPDATE(bgp_orig
, mpinfo
, bgp
);
1423 if (nh_family
== AF_INET
) {
1424 nh_updated
= update_ipv4nh_for_route_install(
1425 nh_othervrf
, bgp_orig
,
1426 &mpinfo_cp
->attr
->nexthop
, mpinfo_cp
->attr
,
1429 ifindex_t ifindex
= IFINDEX_INTERNAL
;
1430 struct in6_addr
*nexthop
;
1432 nexthop
= bgp_path_info_to_ipv6_nexthop(mpinfo_cp
,
1436 nh_updated
= update_ipv4nh_for_route_install(
1437 nh_othervrf
, bgp_orig
,
1438 &mpinfo_cp
->attr
->nexthop
,
1439 mpinfo_cp
->attr
, is_evpn
, api_nh
);
1441 nh_updated
= update_ipv6nh_for_route_install(
1442 nh_othervrf
, bgp_orig
, nexthop
, ifindex
,
1443 mpinfo
, info
, is_evpn
, api_nh
);
1446 /* Did we get proper nexthop info to update zebra? */
1450 /* Allow recursion if it is a multipath group with both
1451 * eBGP and iBGP paths.
1453 if (!allow_recursion
1454 && CHECK_FLAG(bgp
->flags
, BGP_FLAG_PEERTYPE_MULTIPATH_RELAX
)
1455 && (mpinfo
->peer
->sort
== BGP_PEER_IBGP
1456 || mpinfo
->peer
->sort
== BGP_PEER_CONFED
))
1457 allow_recursion
= true;
1460 && bgp_is_valid_label(&mpinfo
->extra
->label
[0])
1461 && !CHECK_FLAG(api
.flags
, ZEBRA_FLAG_EVPN_ROUTE
)) {
1462 label
= label_pton(&mpinfo
->extra
->label
[0]);
1464 SET_FLAG(api_nh
->flags
, ZAPI_NEXTHOP_FLAG_LABEL
);
1466 api_nh
->label_num
= 1;
1467 api_nh
->labels
[0] = label
;
1471 && mpinfo
->attr
->evpn_overlay
.type
1472 != OVERLAY_INDEX_GATEWAY_IP
)
1473 memcpy(&api_nh
->rmac
, &(mpinfo
->attr
->rmac
),
1474 sizeof(struct ethaddr
));
1476 api_nh
->weight
= nh_weight
;
1478 if (mpinfo
->extra
&& !sid_zero(&mpinfo
->extra
->sid
[0].sid
)
1479 && !CHECK_FLAG(api
.flags
, ZEBRA_FLAG_EVPN_ROUTE
)) {
1480 memcpy(&api_nh
->seg6_segs
, &mpinfo
->extra
->sid
[0].sid
,
1481 sizeof(api_nh
->seg6_segs
));
1483 SET_FLAG(api_nh
->flags
, ZAPI_NEXTHOP_FLAG_SEG6
);
1489 is_add
= (valid_nh_count
|| nhg_id
) ? true : false;
1491 if (is_add
&& CHECK_FLAG(bm
->flags
, BM_FLAG_SEND_EXTRA_DATA_TO_ZEBRA
)) {
1492 struct bgp_zebra_opaque bzo
= {};
1493 const char *reason
=
1494 bgp_path_selection_reason2str(dest
->reason
);
1496 strlcpy(bzo
.aspath
, info
->attr
->aspath
->str
,
1497 sizeof(bzo
.aspath
));
1499 if (info
->attr
->flag
& ATTR_FLAG_BIT(BGP_ATTR_COMMUNITIES
))
1500 strlcpy(bzo
.community
, info
->attr
->community
->str
,
1501 sizeof(bzo
.community
));
1503 if (info
->attr
->flag
1504 & ATTR_FLAG_BIT(BGP_ATTR_LARGE_COMMUNITIES
))
1505 strlcpy(bzo
.lcommunity
, info
->attr
->lcommunity
->str
,
1506 sizeof(bzo
.lcommunity
));
1508 strlcpy(bzo
.selection_reason
, reason
,
1509 sizeof(bzo
.selection_reason
));
1511 SET_FLAG(api
.message
, ZAPI_MESSAGE_OPAQUE
);
1512 api
.opaque
.length
= MIN(sizeof(struct bgp_zebra_opaque
),
1513 ZAPI_MESSAGE_OPAQUE_LENGTH
);
1514 memcpy(api
.opaque
.data
, &bzo
, api
.opaque
.length
);
1517 if (allow_recursion
)
1518 SET_FLAG(api
.flags
, ZEBRA_FLAG_ALLOW_RECURSION
);
1521 * When we create an aggregate route we must also
1522 * install a Null0 route in the RIB, so overwrite
1523 * what was written into api with a blackhole route
1525 if (info
->sub_type
== BGP_ROUTE_AGGREGATE
)
1526 zapi_route_set_blackhole(&api
, BLACKHOLE_NULL
);
1528 api
.nexthop_num
= valid_nh_count
;
1530 SET_FLAG(api
.message
, ZAPI_MESSAGE_METRIC
);
1531 api
.metric
= metric
;
1534 SET_FLAG(api
.message
, ZAPI_MESSAGE_TAG
);
1538 distance
= bgp_distance_apply(p
, info
, afi
, safi
, bgp
);
1540 SET_FLAG(api
.message
, ZAPI_MESSAGE_DISTANCE
);
1541 api
.distance
= distance
;
1544 if (bgp_debug_zebra(p
)) {
1545 char nh_buf
[INET6_ADDRSTRLEN
];
1546 char eth_buf
[ETHER_ADDR_STRLEN
+ 7] = {'\0'};
1547 char buf1
[ETHER_ADDR_STRLEN
];
1554 "Tx route %s VRF %u %pFX metric %u tag %" ROUTE_TAG_PRI
1556 valid_nh_count
? "add" : "delete", bgp
->vrf_id
,
1557 &api
.prefix
, api
.metric
, api
.tag
, api
.nexthop_num
,
1559 for (i
= 0; i
< api
.nexthop_num
; i
++) {
1560 api_nh
= &api
.nexthops
[i
];
1562 switch (api_nh
->type
) {
1563 case NEXTHOP_TYPE_IFINDEX
:
1566 case NEXTHOP_TYPE_IPV4
:
1567 case NEXTHOP_TYPE_IPV4_IFINDEX
:
1568 nh_family
= AF_INET
;
1569 inet_ntop(nh_family
, &api_nh
->gate
, nh_buf
,
1572 case NEXTHOP_TYPE_IPV6
:
1573 case NEXTHOP_TYPE_IPV6_IFINDEX
:
1574 nh_family
= AF_INET6
;
1575 inet_ntop(nh_family
, &api_nh
->gate
, nh_buf
,
1578 case NEXTHOP_TYPE_BLACKHOLE
:
1579 strlcpy(nh_buf
, "blackhole", sizeof(nh_buf
));
1582 /* Note: add new nexthop case */
1587 label_buf
[0] = '\0';
1590 if (CHECK_FLAG(api_nh
->flags
, ZAPI_NEXTHOP_FLAG_LABEL
)
1591 && !CHECK_FLAG(api
.flags
, ZEBRA_FLAG_EVPN_ROUTE
))
1592 snprintf(label_buf
, sizeof(label_buf
),
1593 "label %u", api_nh
->labels
[0]);
1594 if (CHECK_FLAG(api_nh
->flags
, ZAPI_NEXTHOP_FLAG_SEG6
)
1595 && !CHECK_FLAG(api
.flags
, ZEBRA_FLAG_EVPN_ROUTE
)) {
1596 inet_ntop(AF_INET6
, &api_nh
->seg6_segs
,
1597 sid_buf
, sizeof(sid_buf
));
1598 snprintf(segs_buf
, sizeof(segs_buf
), "segs %s",
1601 if (CHECK_FLAG(api
.flags
, ZEBRA_FLAG_EVPN_ROUTE
)
1602 && !is_zero_mac(&api_nh
->rmac
))
1603 snprintf(eth_buf
, sizeof(eth_buf
), " RMAC %s",
1604 prefix_mac2str(&api_nh
->rmac
,
1605 buf1
, sizeof(buf1
)));
1606 zlog_debug(" nhop [%d]: %s if %u VRF %u wt %u %s %s %s",
1607 i
+ 1, nh_buf
, api_nh
->ifindex
,
1608 api_nh
->vrf_id
, api_nh
->weight
,
1609 label_buf
, segs_buf
, eth_buf
);
1612 int recursion_flag
= 0;
1614 if (CHECK_FLAG(api
.flags
, ZEBRA_FLAG_ALLOW_RECURSION
))
1617 zlog_debug("%s: %pFX: announcing to zebra (recursion %sset)",
1618 __func__
, p
, (recursion_flag
? "" : "NOT "));
1620 zclient_route_send(is_add
? ZEBRA_ROUTE_ADD
: ZEBRA_ROUTE_DELETE
,
1624 /* Announce all routes of a table to zebra */
1625 void bgp_zebra_announce_table(struct bgp
*bgp
, afi_t afi
, safi_t safi
)
1627 struct bgp_dest
*dest
;
1628 struct bgp_table
*table
;
1629 struct bgp_path_info
*pi
;
1631 /* Don't try to install if we're not connected to Zebra or Zebra doesn't
1632 * know of this instance.
1634 if (!bgp_install_info_to_zebra(bgp
))
1637 table
= bgp
->rib
[afi
][safi
];
1641 for (dest
= bgp_table_top(table
); dest
; dest
= bgp_route_next(dest
))
1642 for (pi
= bgp_dest_get_bgp_path_info(dest
); pi
; pi
= pi
->next
)
1643 if (CHECK_FLAG(pi
->flags
, BGP_PATH_SELECTED
) &&
1645 (pi
->type
== ZEBRA_ROUTE_BGP
1646 && (pi
->sub_type
== BGP_ROUTE_NORMAL
1647 || pi
->sub_type
== BGP_ROUTE_IMPORTED
)))
1649 bgp_zebra_announce(dest
,
1650 bgp_dest_get_prefix(dest
),
1651 pi
, bgp
, afi
, safi
);
1654 /* Announce routes of any bgp subtype of a table to zebra */
1655 void bgp_zebra_announce_table_all_subtypes(struct bgp
*bgp
, afi_t afi
,
1658 struct bgp_dest
*dest
;
1659 struct bgp_table
*table
;
1660 struct bgp_path_info
*pi
;
1662 if (!bgp_install_info_to_zebra(bgp
))
1665 table
= bgp
->rib
[afi
][safi
];
1669 for (dest
= bgp_table_top(table
); dest
; dest
= bgp_route_next(dest
))
1670 for (pi
= bgp_dest_get_bgp_path_info(dest
); pi
; pi
= pi
->next
)
1671 if (CHECK_FLAG(pi
->flags
, BGP_PATH_SELECTED
) &&
1672 pi
->type
== ZEBRA_ROUTE_BGP
)
1673 bgp_zebra_announce(dest
,
1674 bgp_dest_get_prefix(dest
),
1675 pi
, bgp
, afi
, safi
);
1678 void bgp_zebra_withdraw(const struct prefix
*p
, struct bgp_path_info
*info
,
1679 struct bgp
*bgp
, safi_t safi
)
1681 struct zapi_route api
;
1684 /* Don't try to install if we're not connected to Zebra or Zebra doesn't
1685 * know of this instance.
1687 if (!bgp_install_info_to_zebra(bgp
))
1690 if (safi
== SAFI_FLOWSPEC
) {
1692 bgp_pbr_update_entry(peer
->bgp
, p
, info
, AFI_IP
, safi
, false);
1696 memset(&api
, 0, sizeof(api
));
1697 api
.vrf_id
= bgp
->vrf_id
;
1698 api
.type
= ZEBRA_ROUTE_BGP
;
1702 if (info
->attr
->rmap_table_id
) {
1703 SET_FLAG(api
.message
, ZAPI_MESSAGE_TABLEID
);
1704 api
.tableid
= info
->attr
->rmap_table_id
;
1707 /* If the route's source is EVPN, flag as such. */
1708 if (is_route_parent_evpn(info
))
1709 SET_FLAG(api
.flags
, ZEBRA_FLAG_EVPN_ROUTE
);
1711 if (bgp_debug_zebra(p
))
1712 zlog_debug("Tx route delete VRF %u %pFX", bgp
->vrf_id
,
1715 zclient_route_send(ZEBRA_ROUTE_DELETE
, zclient
, &api
);
1718 /* Withdraw all entries in a BGP instances RIB table from Zebra */
1719 void bgp_zebra_withdraw_table_all_subtypes(struct bgp
*bgp
, afi_t afi
, safi_t safi
)
1721 struct bgp_dest
*dest
;
1722 struct bgp_table
*table
;
1723 struct bgp_path_info
*pi
;
1725 if (!bgp_install_info_to_zebra(bgp
))
1728 table
= bgp
->rib
[afi
][safi
];
1732 for (dest
= bgp_table_top(table
); dest
; dest
= bgp_route_next(dest
)) {
1733 for (pi
= bgp_dest_get_bgp_path_info(dest
); pi
; pi
= pi
->next
) {
1734 if (CHECK_FLAG(pi
->flags
, BGP_PATH_SELECTED
)
1735 && (pi
->type
== ZEBRA_ROUTE_BGP
))
1736 bgp_zebra_withdraw(bgp_dest_get_prefix(dest
),
1742 struct bgp_redist
*bgp_redist_lookup(struct bgp
*bgp
, afi_t afi
, uint8_t type
,
1743 unsigned short instance
)
1745 struct list
*red_list
;
1746 struct listnode
*node
;
1747 struct bgp_redist
*red
;
1749 red_list
= bgp
->redist
[afi
][type
];
1753 for (ALL_LIST_ELEMENTS_RO(red_list
, node
, red
))
1754 if (red
->instance
== instance
)
1760 struct bgp_redist
*bgp_redist_add(struct bgp
*bgp
, afi_t afi
, uint8_t type
,
1761 unsigned short instance
)
1763 struct list
*red_list
;
1764 struct bgp_redist
*red
;
1766 red
= bgp_redist_lookup(bgp
, afi
, type
, instance
);
1770 if (!bgp
->redist
[afi
][type
])
1771 bgp
->redist
[afi
][type
] = list_new();
1773 red_list
= bgp
->redist
[afi
][type
];
1774 red
= XCALLOC(MTYPE_BGP_REDIST
, sizeof(struct bgp_redist
));
1775 red
->instance
= instance
;
1777 listnode_add(red_list
, red
);
1782 static void bgp_redist_del(struct bgp
*bgp
, afi_t afi
, uint8_t type
,
1783 unsigned short instance
)
1785 struct bgp_redist
*red
;
1787 red
= bgp_redist_lookup(bgp
, afi
, type
, instance
);
1790 listnode_delete(bgp
->redist
[afi
][type
], red
);
1791 XFREE(MTYPE_BGP_REDIST
, red
);
1792 if (!bgp
->redist
[afi
][type
]->count
)
1793 list_delete(&bgp
->redist
[afi
][type
]);
1797 /* Other routes redistribution into BGP. */
1798 int bgp_redistribute_set(struct bgp
*bgp
, afi_t afi
, int type
,
1799 unsigned short instance
, bool changed
)
1801 /* If redistribute options are changed call
1802 * bgp_redistribute_unreg() to reset the option and withdraw
1806 bgp_redistribute_unreg(bgp
, afi
, type
, instance
);
1808 /* Return if already redistribute flag is set. */
1810 if (redist_check_instance(&zclient
->mi_redist
[afi
][type
],
1814 redist_add_instance(&zclient
->mi_redist
[afi
][type
], instance
);
1816 if (vrf_bitmap_check(zclient
->redist
[afi
][type
], bgp
->vrf_id
))
1819 #ifdef ENABLE_BGP_VNC
1820 if (EVPN_ENABLED(bgp
) && type
== ZEBRA_ROUTE_VNC_DIRECT
) {
1821 vnc_export_bgp_enable(
1822 bgp
, afi
); /* only enables if mode bits cfg'd */
1826 vrf_bitmap_set(zclient
->redist
[afi
][type
], bgp
->vrf_id
);
1830 * Don't try to register if we're not connected to Zebra or Zebra
1831 * doesn't know of this instance.
1833 * When we come up later well resend if needed.
1835 if (!bgp_install_info_to_zebra(bgp
))
1838 if (BGP_DEBUG(zebra
, ZEBRA
))
1839 zlog_debug("Tx redistribute add VRF %u afi %d %s %d",
1840 bgp
->vrf_id
, afi
, zebra_route_string(type
),
1843 /* Send distribute add message to zebra. */
1844 zebra_redistribute_send(ZEBRA_REDISTRIBUTE_ADD
, zclient
, afi
, type
,
1845 instance
, bgp
->vrf_id
);
1850 int bgp_redistribute_resend(struct bgp
*bgp
, afi_t afi
, int type
,
1851 unsigned short instance
)
1853 /* Don't try to send if we're not connected to Zebra or Zebra doesn't
1854 * know of this instance.
1856 if (!bgp_install_info_to_zebra(bgp
))
1859 if (BGP_DEBUG(zebra
, ZEBRA
))
1860 zlog_debug("Tx redistribute del/add VRF %u afi %d %s %d",
1861 bgp
->vrf_id
, afi
, zebra_route_string(type
),
1864 /* Send distribute add message to zebra. */
1865 zebra_redistribute_send(ZEBRA_REDISTRIBUTE_DELETE
, zclient
, afi
, type
,
1866 instance
, bgp
->vrf_id
);
1867 zebra_redistribute_send(ZEBRA_REDISTRIBUTE_ADD
, zclient
, afi
, type
,
1868 instance
, bgp
->vrf_id
);
1873 /* Redistribute with route-map specification. */
1874 bool bgp_redistribute_rmap_set(struct bgp_redist
*red
, const char *name
,
1875 struct route_map
*route_map
)
1877 if (red
->rmap
.name
&& (strcmp(red
->rmap
.name
, name
) == 0))
1880 XFREE(MTYPE_ROUTE_MAP_NAME
, red
->rmap
.name
);
1881 /* Decrement the count for existing routemap and
1882 * increment the count for new route map.
1884 route_map_counter_decrement(red
->rmap
.map
);
1885 red
->rmap
.name
= XSTRDUP(MTYPE_ROUTE_MAP_NAME
, name
);
1886 red
->rmap
.map
= route_map
;
1887 route_map_counter_increment(red
->rmap
.map
);
1892 /* Redistribute with metric specification. */
1893 bool bgp_redistribute_metric_set(struct bgp
*bgp
, struct bgp_redist
*red
,
1894 afi_t afi
, int type
, uint32_t metric
)
1896 struct bgp_dest
*dest
;
1897 struct bgp_path_info
*pi
;
1899 if (red
->redist_metric_flag
&& red
->redist_metric
== metric
)
1902 red
->redist_metric_flag
= 1;
1903 red
->redist_metric
= metric
;
1905 for (dest
= bgp_table_top(bgp
->rib
[afi
][SAFI_UNICAST
]); dest
;
1906 dest
= bgp_route_next(dest
)) {
1907 for (pi
= bgp_dest_get_bgp_path_info(dest
); pi
; pi
= pi
->next
) {
1908 if (pi
->sub_type
== BGP_ROUTE_REDISTRIBUTE
1910 && pi
->instance
== red
->instance
) {
1911 struct attr
*old_attr
;
1912 struct attr new_attr
;
1914 new_attr
= *pi
->attr
;
1915 new_attr
.med
= red
->redist_metric
;
1916 old_attr
= pi
->attr
;
1917 pi
->attr
= bgp_attr_intern(&new_attr
);
1918 bgp_attr_unintern(&old_attr
);
1920 bgp_path_info_set_flag(dest
, pi
,
1921 BGP_PATH_ATTR_CHANGED
);
1922 bgp_process(bgp
, dest
, afi
, SAFI_UNICAST
);
1930 /* Unset redistribution. */
1931 int bgp_redistribute_unreg(struct bgp
*bgp
, afi_t afi
, int type
,
1932 unsigned short instance
)
1934 struct bgp_redist
*red
;
1936 red
= bgp_redist_lookup(bgp
, afi
, type
, instance
);
1940 /* Return if zebra connection is disabled. */
1942 if (!redist_check_instance(&zclient
->mi_redist
[afi
][type
],
1945 redist_del_instance(&zclient
->mi_redist
[afi
][type
], instance
);
1947 if (!vrf_bitmap_check(zclient
->redist
[afi
][type
], bgp
->vrf_id
))
1949 vrf_bitmap_unset(zclient
->redist
[afi
][type
], bgp
->vrf_id
);
1952 if (bgp_install_info_to_zebra(bgp
)) {
1953 /* Send distribute delete message to zebra. */
1954 if (BGP_DEBUG(zebra
, ZEBRA
))
1955 zlog_debug("Tx redistribute del VRF %u afi %d %s %d",
1956 bgp
->vrf_id
, afi
, zebra_route_string(type
),
1958 zebra_redistribute_send(ZEBRA_REDISTRIBUTE_DELETE
, zclient
, afi
,
1959 type
, instance
, bgp
->vrf_id
);
1962 /* Withdraw redistributed routes from current BGP's routing table. */
1963 bgp_redistribute_withdraw(bgp
, afi
, type
, instance
);
1968 /* Unset redistribution. */
1969 int bgp_redistribute_unset(struct bgp
*bgp
, afi_t afi
, int type
,
1970 unsigned short instance
)
1972 struct bgp_redist
*red
;
1975 * vnc and vpn->vrf checks must be before red check because
1976 * they operate within bgpd irrespective of zebra connection
1977 * status. red lookup fails if there is no zebra connection.
1979 #ifdef ENABLE_BGP_VNC
1980 if (EVPN_ENABLED(bgp
) && type
== ZEBRA_ROUTE_VNC_DIRECT
) {
1981 vnc_export_bgp_disable(bgp
, afi
);
1985 red
= bgp_redist_lookup(bgp
, afi
, type
, instance
);
1989 bgp_redistribute_unreg(bgp
, afi
, type
, instance
);
1991 /* Unset route-map. */
1992 XFREE(MTYPE_ROUTE_MAP_NAME
, red
->rmap
.name
);
1993 route_map_counter_decrement(red
->rmap
.map
);
1994 red
->rmap
.map
= NULL
;
1997 red
->redist_metric_flag
= 0;
1998 red
->redist_metric
= 0;
2000 bgp_redist_del(bgp
, afi
, type
, instance
);
2005 void bgp_redistribute_redo(struct bgp
*bgp
)
2009 struct list
*red_list
;
2010 struct listnode
*node
;
2011 struct bgp_redist
*red
;
2013 for (afi
= AFI_IP
; afi
< AFI_MAX
; afi
++) {
2014 for (i
= 0; i
< ZEBRA_ROUTE_MAX
; i
++) {
2016 red_list
= bgp
->redist
[afi
][i
];
2020 for (ALL_LIST_ELEMENTS_RO(red_list
, node
, red
)) {
2021 bgp_redistribute_resend(bgp
, afi
, i
,
2028 void bgp_zclient_reset(void)
2030 zclient_reset(zclient
);
2033 /* Register this instance with Zebra. Invoked upon connect (for
2034 * default instance) and when other VRFs are learnt (or created and
2037 void bgp_zebra_instance_register(struct bgp
*bgp
)
2039 /* Don't try to register if we're not connected to Zebra */
2040 if (!zclient
|| zclient
->sock
< 0)
2043 if (BGP_DEBUG(zebra
, ZEBRA
))
2044 zlog_debug("Registering VRF %u", bgp
->vrf_id
);
2046 /* Register for router-id, interfaces, redistributed routes. */
2047 zclient_send_reg_requests(zclient
, bgp
->vrf_id
);
2049 /* For EVPN instance, register to learn about VNIs, if appropriate. */
2050 if (bgp
->advertise_all_vni
)
2051 bgp_zebra_advertise_all_vni(bgp
, 1);
2053 bgp_nht_register_nexthops(bgp
);
2056 /* Deregister this instance with Zebra. Invoked upon the instance
2057 * being deleted (default or VRF) and it is already registered.
2059 void bgp_zebra_instance_deregister(struct bgp
*bgp
)
2061 /* Don't try to deregister if we're not connected to Zebra */
2062 if (zclient
->sock
< 0)
2065 if (BGP_DEBUG(zebra
, ZEBRA
))
2066 zlog_debug("Deregistering VRF %u", bgp
->vrf_id
);
2068 /* For EVPN instance, unregister learning about VNIs, if appropriate. */
2069 if (bgp
->advertise_all_vni
)
2070 bgp_zebra_advertise_all_vni(bgp
, 0);
2072 /* Deregister for router-id, interfaces, redistributed routes. */
2073 zclient_send_dereg_requests(zclient
, bgp
->vrf_id
);
2076 void bgp_zebra_initiate_radv(struct bgp
*bgp
, struct peer
*peer
)
2078 uint32_t ra_interval
= BGP_UNNUM_DEFAULT_RA_INTERVAL
;
2080 /* Don't try to initiate if we're not connected to Zebra */
2081 if (zclient
->sock
< 0)
2084 if (BGP_DEBUG(zebra
, ZEBRA
))
2085 zlog_debug("%u: Initiating RA for peer %s", bgp
->vrf_id
,
2089 * If unnumbered peer (peer->ifp) call thru zapi to start RAs.
2090 * If we don't have an ifp pointer, call function to find the
2091 * ifps for a numbered enhe peer to turn RAs on.
2093 peer
->ifp
? zclient_send_interface_radv_req(zclient
, bgp
->vrf_id
,
2094 peer
->ifp
, 1, ra_interval
)
2095 : bgp_nht_reg_enhe_cap_intfs(peer
);
2098 void bgp_zebra_terminate_radv(struct bgp
*bgp
, struct peer
*peer
)
2100 /* Don't try to terminate if we're not connected to Zebra */
2101 if (zclient
->sock
< 0)
2104 if (BGP_DEBUG(zebra
, ZEBRA
))
2105 zlog_debug("%u: Terminating RA for peer %s", bgp
->vrf_id
,
2109 * If unnumbered peer (peer->ifp) call thru zapi to stop RAs.
2110 * If we don't have an ifp pointer, call function to find the
2111 * ifps for a numbered enhe peer to turn RAs off.
2113 peer
->ifp
? zclient_send_interface_radv_req(zclient
, bgp
->vrf_id
,
2115 : bgp_nht_dereg_enhe_cap_intfs(peer
);
2118 int bgp_zebra_advertise_subnet(struct bgp
*bgp
, int advertise
, vni_t vni
)
2120 struct stream
*s
= NULL
;
2123 if (!zclient
|| zclient
->sock
< 0)
2126 /* Don't try to register if Zebra doesn't know of this instance. */
2127 if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp
)) {
2128 if (BGP_DEBUG(zebra
, ZEBRA
))
2130 "%s: No zebra instance to talk to, cannot advertise subnet",
2138 zclient_create_header(s
, ZEBRA_ADVERTISE_SUBNET
, bgp
->vrf_id
);
2139 stream_putc(s
, advertise
);
2140 stream_put3(s
, vni
);
2141 stream_putw_at(s
, 0, stream_get_endp(s
));
2143 return zclient_send_message(zclient
);
2146 int bgp_zebra_advertise_svi_macip(struct bgp
*bgp
, int advertise
, vni_t vni
)
2148 struct stream
*s
= NULL
;
2151 if (!zclient
|| zclient
->sock
< 0)
2154 /* Don't try to register if Zebra doesn't know of this instance. */
2155 if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp
))
2161 zclient_create_header(s
, ZEBRA_ADVERTISE_SVI_MACIP
, bgp
->vrf_id
);
2162 stream_putc(s
, advertise
);
2163 stream_putl(s
, vni
);
2164 stream_putw_at(s
, 0, stream_get_endp(s
));
2166 return zclient_send_message(zclient
);
2169 int bgp_zebra_advertise_gw_macip(struct bgp
*bgp
, int advertise
, vni_t vni
)
2171 struct stream
*s
= NULL
;
2174 if (!zclient
|| zclient
->sock
< 0)
2177 /* Don't try to register if Zebra doesn't know of this instance. */
2178 if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp
)) {
2179 if (BGP_DEBUG(zebra
, ZEBRA
))
2181 "%s: No zebra instance to talk to, not installing gw_macip",
2189 zclient_create_header(s
, ZEBRA_ADVERTISE_DEFAULT_GW
, bgp
->vrf_id
);
2190 stream_putc(s
, advertise
);
2191 stream_putl(s
, vni
);
2192 stream_putw_at(s
, 0, stream_get_endp(s
));
2194 return zclient_send_message(zclient
);
2197 int bgp_zebra_vxlan_flood_control(struct bgp
*bgp
,
2198 enum vxlan_flood_control flood_ctrl
)
2203 if (!zclient
|| zclient
->sock
< 0)
2206 /* Don't try to register if Zebra doesn't know of this instance. */
2207 if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp
)) {
2208 if (BGP_DEBUG(zebra
, ZEBRA
))
2210 "%s: No zebra instance to talk to, not installing all vni",
2218 zclient_create_header(s
, ZEBRA_VXLAN_FLOOD_CONTROL
, bgp
->vrf_id
);
2219 stream_putc(s
, flood_ctrl
);
2220 stream_putw_at(s
, 0, stream_get_endp(s
));
2222 return zclient_send_message(zclient
);
2225 int bgp_zebra_advertise_all_vni(struct bgp
*bgp
, int advertise
)
2230 if (!zclient
|| zclient
->sock
< 0)
2233 /* Don't try to register if Zebra doesn't know of this instance. */
2234 if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp
))
2240 zclient_create_header(s
, ZEBRA_ADVERTISE_ALL_VNI
, bgp
->vrf_id
);
2241 stream_putc(s
, advertise
);
2242 /* Also inform current BUM handling setting. This is really
2243 * relevant only when 'advertise' is set.
2245 stream_putc(s
, bgp
->vxlan_flood_ctrl
);
2246 stream_putw_at(s
, 0, stream_get_endp(s
));
2248 return zclient_send_message(zclient
);
2251 int bgp_zebra_dup_addr_detection(struct bgp
*bgp
)
2256 if (!zclient
|| zclient
->sock
< 0)
2259 /* Don't try to register if Zebra doesn't know of this instance. */
2260 if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp
))
2263 if (BGP_DEBUG(zebra
, ZEBRA
))
2264 zlog_debug("dup addr detect %s max_moves %u time %u freeze %s freeze_time %u",
2265 bgp
->evpn_info
->dup_addr_detect
?
2266 "enable" : "disable",
2267 bgp
->evpn_info
->dad_max_moves
,
2268 bgp
->evpn_info
->dad_time
,
2269 bgp
->evpn_info
->dad_freeze
?
2270 "enable" : "disable",
2271 bgp
->evpn_info
->dad_freeze_time
);
2275 zclient_create_header(s
, ZEBRA_DUPLICATE_ADDR_DETECTION
,
2277 stream_putl(s
, bgp
->evpn_info
->dup_addr_detect
);
2278 stream_putl(s
, bgp
->evpn_info
->dad_time
);
2279 stream_putl(s
, bgp
->evpn_info
->dad_max_moves
);
2280 stream_putl(s
, bgp
->evpn_info
->dad_freeze
);
2281 stream_putl(s
, bgp
->evpn_info
->dad_freeze_time
);
2282 stream_putw_at(s
, 0, stream_get_endp(s
));
2284 return zclient_send_message(zclient
);
2287 static int rule_notify_owner(ZAPI_CALLBACK_ARGS
)
2289 uint32_t seqno
, priority
, unique
;
2290 enum zapi_rule_notify_owner note
;
2291 struct bgp_pbr_action
*bgp_pbra
;
2292 struct bgp_pbr_rule
*bgp_pbr
= NULL
;
2293 char ifname
[INTERFACE_NAMSIZ
+ 1];
2295 if (!zapi_rule_notify_decode(zclient
->ibuf
, &seqno
, &priority
, &unique
,
2299 bgp_pbra
= bgp_pbr_action_rule_lookup(vrf_id
, unique
);
2301 /* look in bgp pbr rule */
2302 bgp_pbr
= bgp_pbr_rule_lookup(vrf_id
, unique
);
2303 if (!bgp_pbr
&& note
!= ZAPI_RULE_REMOVED
) {
2304 if (BGP_DEBUG(zebra
, ZEBRA
))
2305 zlog_debug("%s: Fail to look BGP rule (%u)",
2312 case ZAPI_RULE_FAIL_INSTALL
:
2313 if (BGP_DEBUG(zebra
, ZEBRA
))
2314 zlog_debug("%s: Received RULE_FAIL_INSTALL", __func__
);
2316 bgp_pbra
->installed
= false;
2317 bgp_pbra
->install_in_progress
= false;
2319 bgp_pbr
->installed
= false;
2320 bgp_pbr
->install_in_progress
= false;
2323 case ZAPI_RULE_INSTALLED
:
2325 bgp_pbra
->installed
= true;
2326 bgp_pbra
->install_in_progress
= false;
2328 struct bgp_path_info
*path
;
2329 struct bgp_path_info_extra
*extra
;
2331 bgp_pbr
->installed
= true;
2332 bgp_pbr
->install_in_progress
= false;
2333 bgp_pbr
->action
->refcnt
++;
2334 /* link bgp_info to bgp_pbr */
2335 path
= (struct bgp_path_info
*)bgp_pbr
->path
;
2336 extra
= bgp_path_info_extra_get(path
);
2337 listnode_add_force(&extra
->bgp_fs_iprule
,
2340 if (BGP_DEBUG(zebra
, ZEBRA
))
2341 zlog_debug("%s: Received RULE_INSTALLED", __func__
);
2343 case ZAPI_RULE_FAIL_REMOVE
:
2344 case ZAPI_RULE_REMOVED
:
2345 if (BGP_DEBUG(zebra
, ZEBRA
))
2346 zlog_debug("%s: Received RULE REMOVED", __func__
);
2353 static int ipset_notify_owner(ZAPI_CALLBACK_ARGS
)
2356 enum zapi_ipset_notify_owner note
;
2357 struct bgp_pbr_match
*bgp_pbim
;
2359 if (!zapi_ipset_notify_decode(zclient
->ibuf
,
2364 bgp_pbim
= bgp_pbr_match_ipset_lookup(vrf_id
, unique
);
2366 if (BGP_DEBUG(zebra
, ZEBRA
))
2367 zlog_debug("%s: Fail to look BGP match ( %u, ID %u)",
2368 __func__
, note
, unique
);
2373 case ZAPI_IPSET_FAIL_INSTALL
:
2374 if (BGP_DEBUG(zebra
, ZEBRA
))
2375 zlog_debug("%s: Received IPSET_FAIL_INSTALL", __func__
);
2376 bgp_pbim
->installed
= false;
2377 bgp_pbim
->install_in_progress
= false;
2379 case ZAPI_IPSET_INSTALLED
:
2380 bgp_pbim
->installed
= true;
2381 bgp_pbim
->install_in_progress
= false;
2382 if (BGP_DEBUG(zebra
, ZEBRA
))
2383 zlog_debug("%s: Received IPSET_INSTALLED", __func__
);
2385 case ZAPI_IPSET_FAIL_REMOVE
:
2386 case ZAPI_IPSET_REMOVED
:
2387 if (BGP_DEBUG(zebra
, ZEBRA
))
2388 zlog_debug("%s: Received IPSET REMOVED", __func__
);
2395 static int ipset_entry_notify_owner(ZAPI_CALLBACK_ARGS
)
2398 char ipset_name
[ZEBRA_IPSET_NAME_SIZE
];
2399 enum zapi_ipset_entry_notify_owner note
;
2400 struct bgp_pbr_match_entry
*bgp_pbime
;
2402 if (!zapi_ipset_entry_notify_decode(
2408 bgp_pbime
= bgp_pbr_match_ipset_entry_lookup(vrf_id
,
2412 if (BGP_DEBUG(zebra
, ZEBRA
))
2414 "%s: Fail to look BGP match entry (%u, ID %u)",
2415 __func__
, note
, unique
);
2420 case ZAPI_IPSET_ENTRY_FAIL_INSTALL
:
2421 if (BGP_DEBUG(zebra
, ZEBRA
))
2422 zlog_debug("%s: Received IPSET_ENTRY_FAIL_INSTALL",
2424 bgp_pbime
->installed
= false;
2425 bgp_pbime
->install_in_progress
= false;
2427 case ZAPI_IPSET_ENTRY_INSTALLED
:
2429 struct bgp_path_info
*path
;
2430 struct bgp_path_info_extra
*extra
;
2432 bgp_pbime
->installed
= true;
2433 bgp_pbime
->install_in_progress
= false;
2434 if (BGP_DEBUG(zebra
, ZEBRA
))
2435 zlog_debug("%s: Received IPSET_ENTRY_INSTALLED",
2437 /* link bgp_path_info to bpme */
2438 path
= (struct bgp_path_info
*)bgp_pbime
->path
;
2439 extra
= bgp_path_info_extra_get(path
);
2440 listnode_add_force(&extra
->bgp_fs_pbr
, bgp_pbime
);
2443 case ZAPI_IPSET_ENTRY_FAIL_REMOVE
:
2444 case ZAPI_IPSET_ENTRY_REMOVED
:
2445 if (BGP_DEBUG(zebra
, ZEBRA
))
2446 zlog_debug("%s: Received IPSET_ENTRY_REMOVED",
2453 static int iptable_notify_owner(ZAPI_CALLBACK_ARGS
)
2456 enum zapi_iptable_notify_owner note
;
2457 struct bgp_pbr_match
*bgpm
;
2459 if (!zapi_iptable_notify_decode(
2464 bgpm
= bgp_pbr_match_iptable_lookup(vrf_id
, unique
);
2466 if (BGP_DEBUG(zebra
, ZEBRA
))
2467 zlog_debug("%s: Fail to look BGP iptable (%u %u)",
2468 __func__
, note
, unique
);
2472 case ZAPI_IPTABLE_FAIL_INSTALL
:
2473 if (BGP_DEBUG(zebra
, ZEBRA
))
2474 zlog_debug("%s: Received IPTABLE_FAIL_INSTALL",
2476 bgpm
->installed_in_iptable
= false;
2477 bgpm
->install_iptable_in_progress
= false;
2479 case ZAPI_IPTABLE_INSTALLED
:
2480 bgpm
->installed_in_iptable
= true;
2481 bgpm
->install_iptable_in_progress
= false;
2482 if (BGP_DEBUG(zebra
, ZEBRA
))
2483 zlog_debug("%s: Received IPTABLE_INSTALLED", __func__
);
2484 bgpm
->action
->refcnt
++;
2486 case ZAPI_IPTABLE_FAIL_REMOVE
:
2487 case ZAPI_IPTABLE_REMOVED
:
2488 if (BGP_DEBUG(zebra
, ZEBRA
))
2489 zlog_debug("%s: Received IPTABLE REMOVED", __func__
);
2495 /* Process route notification messages from RIB */
2496 static int bgp_zebra_route_notify_owner(int command
, struct zclient
*zclient
,
2497 zebra_size_t length
, vrf_id_t vrf_id
)
2500 enum zapi_route_notify_owner note
;
2504 struct bgp_dest
*dest
;
2506 struct bgp_path_info
*pi
, *new_select
;
2508 if (!zapi_route_notify_decode(zclient
->ibuf
, &p
, &table_id
, ¬e
,
2510 zlog_err("%s : error in msg decode", __func__
);
2514 /* Get the bgp instance */
2515 bgp
= bgp_lookup_by_vrf_id(vrf_id
);
2517 flog_err(EC_BGP_INVALID_BGP_INSTANCE
,
2518 "%s : bgp instance not found vrf %d", __func__
,
2523 /* Find the bgp route node */
2524 dest
= bgp_afi_node_lookup(bgp
->rib
[afi
][safi
], afi
, safi
, &p
,
2530 case ZAPI_ROUTE_INSTALLED
:
2532 /* Clear the flags so that route can be processed */
2533 UNSET_FLAG(dest
->flags
, BGP_NODE_FIB_INSTALL_PENDING
);
2534 SET_FLAG(dest
->flags
, BGP_NODE_FIB_INSTALLED
);
2535 if (BGP_DEBUG(zebra
, ZEBRA
))
2536 zlog_debug("route %pRN : INSTALLED", dest
);
2537 /* Find the best route */
2538 for (pi
= dest
->info
; pi
; pi
= pi
->next
) {
2539 /* Process aggregate route */
2540 bgp_aggregate_increment(bgp
, &p
, pi
, afi
, safi
);
2541 if (CHECK_FLAG(pi
->flags
, BGP_PATH_SELECTED
))
2544 /* Advertise the route */
2546 group_announce_route(bgp
, afi
, safi
, dest
, new_select
);
2548 flog_err(EC_BGP_INVALID_ROUTE
,
2549 "selected route %pRN not found", dest
);
2551 bgp_dest_unlock_node(dest
);
2555 case ZAPI_ROUTE_REMOVED
:
2556 /* Route deleted from dataplane, reset the installed flag
2557 * so that route can be reinstalled when client sends
2560 UNSET_FLAG(dest
->flags
, BGP_NODE_FIB_INSTALLED
);
2561 if (BGP_DEBUG(zebra
, ZEBRA
))
2562 zlog_debug("route %pRN: Removed from Fib", dest
);
2564 case ZAPI_ROUTE_FAIL_INSTALL
:
2566 if (BGP_DEBUG(zebra
, ZEBRA
))
2567 zlog_debug("route: %pRN Failed to Install into Fib",
2569 UNSET_FLAG(dest
->flags
, BGP_NODE_FIB_INSTALL_PENDING
);
2570 UNSET_FLAG(dest
->flags
, BGP_NODE_FIB_INSTALLED
);
2571 for (pi
= bgp_dest_get_bgp_path_info(dest
); pi
; pi
= pi
->next
) {
2572 if (CHECK_FLAG(pi
->flags
, BGP_PATH_SELECTED
))
2576 group_announce_route(bgp
, afi
, safi
, dest
, new_select
);
2577 /* Error will be logged by zebra module */
2579 case ZAPI_ROUTE_BETTER_ADMIN_WON
:
2580 if (BGP_DEBUG(zebra
, ZEBRA
))
2581 zlog_debug("route: %pRN removed due to better admin won",
2584 UNSET_FLAG(dest
->flags
, BGP_NODE_FIB_INSTALL_PENDING
);
2585 UNSET_FLAG(dest
->flags
, BGP_NODE_FIB_INSTALLED
);
2586 for (pi
= bgp_dest_get_bgp_path_info(dest
); pi
; pi
= pi
->next
) {
2587 bgp_aggregate_decrement(bgp
, &p
, pi
, afi
, safi
);
2588 if (CHECK_FLAG(pi
->flags
, BGP_PATH_SELECTED
))
2592 group_announce_route(bgp
, afi
, safi
, dest
, new_select
);
2593 /* No action required */
2595 case ZAPI_ROUTE_REMOVE_FAIL
:
2596 zlog_warn("%s: Route %pRN failure to remove",
2601 bgp_dest_unlock_node(dest
);
2605 /* this function is used to forge ip rule,
2606 * - either for iptable/ipset using fwmark id
2607 * - or for sample ip rule cmd
2609 static void bgp_encode_pbr_rule_action(struct stream
*s
,
2610 struct bgp_pbr_action
*pbra
,
2611 struct bgp_pbr_rule
*pbr
)
2614 uint8_t fam
= AF_INET
;
2615 char ifname
[INTERFACE_NAMSIZ
];
2617 if (pbra
->nh
.type
== NEXTHOP_TYPE_IPV6
)
2619 stream_putl(s
, 0); /* seqno unused */
2621 stream_putl(s
, pbr
->priority
);
2624 /* ruleno unused - priority change
2625 * ruleno permits distinguishing various FS PBR entries
2626 * - FS PBR entries based on ipset/iptables
2627 * - FS PBR entries based on iprule
2628 * the latter may contain default routing information injected by FS
2631 stream_putl(s
, pbr
->unique
);
2633 stream_putl(s
, pbra
->unique
);
2634 stream_putc(s
, 0); /* ip protocol being used */
2635 if (pbr
&& pbr
->flags
& MATCH_IP_SRC_SET
)
2636 memcpy(&pfx
, &(pbr
->src
), sizeof(struct prefix
));
2638 memset(&pfx
, 0, sizeof(pfx
));
2641 stream_putc(s
, pfx
.family
);
2642 stream_putc(s
, pfx
.prefixlen
);
2643 stream_put(s
, &pfx
.u
.prefix
, prefix_blen(&pfx
));
2645 stream_putw(s
, 0); /* src port */
2647 if (pbr
&& pbr
->flags
& MATCH_IP_DST_SET
)
2648 memcpy(&pfx
, &(pbr
->dst
), sizeof(struct prefix
));
2650 memset(&pfx
, 0, sizeof(pfx
));
2653 stream_putc(s
, pfx
.family
);
2654 stream_putc(s
, pfx
.prefixlen
);
2655 stream_put(s
, &pfx
.u
.prefix
, prefix_blen(&pfx
));
2657 stream_putw(s
, 0); /* dst port */
2658 stream_putc(s
, 0); /* dsfield */
2659 /* if pbr present, fwmark is not used */
2663 stream_putl(s
, pbra
->fwmark
); /* fwmark */
2665 stream_putl(s
, pbra
->table_id
);
2667 memset(ifname
, 0, sizeof(ifname
));
2668 stream_put(s
, ifname
, INTERFACE_NAMSIZ
); /* ifname unused */
2671 static void bgp_encode_pbr_ipset_match(struct stream
*s
,
2672 struct bgp_pbr_match
*pbim
)
2674 stream_putl(s
, pbim
->unique
);
2675 stream_putl(s
, pbim
->type
);
2676 stream_putc(s
, pbim
->family
);
2677 stream_put(s
, pbim
->ipset_name
,
2678 ZEBRA_IPSET_NAME_SIZE
);
2681 static void bgp_encode_pbr_ipset_entry_match(struct stream
*s
,
2682 struct bgp_pbr_match_entry
*pbime
)
2684 stream_putl(s
, pbime
->unique
);
2685 /* check that back pointer is not null */
2686 stream_put(s
, pbime
->backpointer
->ipset_name
,
2687 ZEBRA_IPSET_NAME_SIZE
);
2689 stream_putc(s
, pbime
->src
.family
);
2690 stream_putc(s
, pbime
->src
.prefixlen
);
2691 stream_put(s
, &pbime
->src
.u
.prefix
, prefix_blen(&pbime
->src
));
2693 stream_putc(s
, pbime
->dst
.family
);
2694 stream_putc(s
, pbime
->dst
.prefixlen
);
2695 stream_put(s
, &pbime
->dst
.u
.prefix
, prefix_blen(&pbime
->dst
));
2697 stream_putw(s
, pbime
->src_port_min
);
2698 stream_putw(s
, pbime
->src_port_max
);
2699 stream_putw(s
, pbime
->dst_port_min
);
2700 stream_putw(s
, pbime
->dst_port_max
);
2701 stream_putc(s
, pbime
->proto
);
2704 static void bgp_encode_pbr_iptable_match(struct stream
*s
,
2705 struct bgp_pbr_action
*bpa
,
2706 struct bgp_pbr_match
*pbm
)
2708 stream_putl(s
, pbm
->unique2
);
2710 stream_putl(s
, pbm
->type
);
2712 stream_putl(s
, pbm
->flags
);
2714 /* TODO: correlate with what is contained
2715 * into bgp_pbr_action.
2716 * currently only forward supported
2718 if (bpa
->nh
.type
== NEXTHOP_TYPE_BLACKHOLE
)
2719 stream_putl(s
, ZEBRA_IPTABLES_DROP
);
2721 stream_putl(s
, ZEBRA_IPTABLES_FORWARD
);
2722 stream_putl(s
, bpa
->fwmark
);
2723 stream_put(s
, pbm
->ipset_name
,
2724 ZEBRA_IPSET_NAME_SIZE
);
2725 stream_putc(s
, pbm
->family
);
2726 stream_putw(s
, pbm
->pkt_len_min
);
2727 stream_putw(s
, pbm
->pkt_len_max
);
2728 stream_putw(s
, pbm
->tcp_flags
);
2729 stream_putw(s
, pbm
->tcp_mask_flags
);
2730 stream_putc(s
, pbm
->dscp_value
);
2731 stream_putc(s
, pbm
->fragment
);
2732 stream_putc(s
, pbm
->protocol
);
2733 stream_putw(s
, pbm
->flow_label
);
2736 /* BGP has established connection with Zebra. */
2737 static void bgp_zebra_connected(struct zclient
*zclient
)
2741 zclient_num_connects
++; /* increment even if not responding */
2743 /* Send the client registration */
2744 bfd_client_sendmsg(zclient
, ZEBRA_BFD_CLIENT_REGISTER
, VRF_DEFAULT
);
2746 /* At this point, we may or may not have BGP instances configured, but
2747 * we're only interested in the default VRF (others wouldn't have learnt
2748 * the VRF from Zebra yet.)
2750 bgp
= bgp_get_default();
2754 bgp_zebra_instance_register(bgp
);
2756 /* tell label pool that zebra is connected */
2757 bgp_lp_event_zebra_up();
2759 /* TODO - What if we have peers and networks configured, do we have to
2762 BGP_GR_ROUTER_DETECT_AND_SEND_CAPABILITY_TO_ZEBRA(bgp
, bgp
->peer
);
2765 static int bgp_zebra_process_local_es_add(ZAPI_CALLBACK_ARGS
)
2768 struct bgp
*bgp
= NULL
;
2769 struct stream
*s
= NULL
;
2770 char buf
[ESI_STR_LEN
];
2771 struct in_addr originator_ip
;
2776 bgp
= bgp_lookup_by_vrf_id(vrf_id
);
2781 stream_get(&esi
, s
, sizeof(esi_t
));
2782 originator_ip
.s_addr
= stream_get_ipv4(s
);
2783 active
= stream_getc(s
);
2784 df_pref
= stream_getw(s
);
2785 bypass
= stream_getc(s
);
2787 if (BGP_DEBUG(zebra
, ZEBRA
))
2789 "Rx add ESI %s originator-ip %pI4 active %u df_pref %u %s",
2790 esi_to_str(&esi
, buf
, sizeof(buf
)), &originator_ip
,
2791 active
, df_pref
, bypass
? "bypass" : "");
2793 frrtrace(5, frr_bgp
, evpn_mh_local_es_add_zrecv
, &esi
, originator_ip
,
2794 active
, bypass
, df_pref
);
2796 bgp_evpn_local_es_add(bgp
, &esi
, originator_ip
, active
, df_pref
,
2802 static int bgp_zebra_process_local_es_del(ZAPI_CALLBACK_ARGS
)
2805 struct bgp
*bgp
= NULL
;
2806 struct stream
*s
= NULL
;
2807 char buf
[ESI_STR_LEN
];
2809 memset(&esi
, 0, sizeof(esi_t
));
2810 bgp
= bgp_lookup_by_vrf_id(vrf_id
);
2815 stream_get(&esi
, s
, sizeof(esi_t
));
2817 if (BGP_DEBUG(zebra
, ZEBRA
))
2818 zlog_debug("Rx del ESI %s",
2819 esi_to_str(&esi
, buf
, sizeof(buf
)));
2821 frrtrace(1, frr_bgp
, evpn_mh_local_es_del_zrecv
, &esi
);
2823 bgp_evpn_local_es_del(bgp
, &esi
);
2828 static int bgp_zebra_process_local_es_evi(ZAPI_CALLBACK_ARGS
)
2834 char buf
[ESI_STR_LEN
];
2836 bgp
= bgp_lookup_by_vrf_id(vrf_id
);
2841 stream_get(&esi
, s
, sizeof(esi_t
));
2842 vni
= stream_getl(s
);
2844 if (BGP_DEBUG(zebra
, ZEBRA
))
2845 zlog_debug("Rx %s ESI %s VNI %u",
2846 (cmd
== ZEBRA_VNI_ADD
) ? "add" : "del",
2847 esi_to_str(&esi
, buf
, sizeof(buf
)), vni
);
2849 if (cmd
== ZEBRA_LOCAL_ES_EVI_ADD
) {
2850 frrtrace(2, frr_bgp
, evpn_mh_local_es_evi_add_zrecv
, &esi
, vni
);
2852 bgp_evpn_local_es_evi_add(bgp
, &esi
, vni
);
2854 frrtrace(2, frr_bgp
, evpn_mh_local_es_evi_del_zrecv
, &esi
, vni
);
2856 bgp_evpn_local_es_evi_del(bgp
, &esi
, vni
);
2862 static int bgp_zebra_process_local_l3vni(ZAPI_CALLBACK_ARGS
)
2866 struct ethaddr svi_rmac
, vrr_rmac
= {.octet
= {0} };
2867 struct in_addr originator_ip
;
2869 ifindex_t svi_ifindex
;
2870 bool is_anycast_mac
= false;
2872 memset(&svi_rmac
, 0, sizeof(struct ethaddr
));
2873 memset(&originator_ip
, 0, sizeof(struct in_addr
));
2875 l3vni
= stream_getl(s
);
2876 if (cmd
== ZEBRA_L3VNI_ADD
) {
2877 stream_get(&svi_rmac
, s
, sizeof(struct ethaddr
));
2878 originator_ip
.s_addr
= stream_get_ipv4(s
);
2879 stream_get(&filter
, s
, sizeof(int));
2880 svi_ifindex
= stream_getl(s
);
2881 stream_get(&vrr_rmac
, s
, sizeof(struct ethaddr
));
2882 is_anycast_mac
= stream_getl(s
);
2884 if (BGP_DEBUG(zebra
, ZEBRA
))
2886 "Rx L3-VNI ADD VRF %s VNI %u RMAC svi-mac %pEA vrr-mac %pEA filter %s svi-if %u",
2887 vrf_id_to_name(vrf_id
), l3vni
, &svi_rmac
,
2889 filter
? "prefix-routes-only" : "none",
2892 frrtrace(8, frr_bgp
, evpn_local_l3vni_add_zrecv
, l3vni
, vrf_id
,
2893 &svi_rmac
, &vrr_rmac
, filter
, originator_ip
,
2894 svi_ifindex
, is_anycast_mac
);
2896 bgp_evpn_local_l3vni_add(l3vni
, vrf_id
, &svi_rmac
, &vrr_rmac
,
2897 originator_ip
, filter
, svi_ifindex
,
2900 if (BGP_DEBUG(zebra
, ZEBRA
))
2901 zlog_debug("Rx L3-VNI DEL VRF %s VNI %u",
2902 vrf_id_to_name(vrf_id
), l3vni
);
2904 frrtrace(2, frr_bgp
, evpn_local_l3vni_del_zrecv
, l3vni
, vrf_id
);
2906 bgp_evpn_local_l3vni_del(l3vni
, vrf_id
);
2912 static int bgp_zebra_process_local_vni(ZAPI_CALLBACK_ARGS
)
2917 struct in_addr vtep_ip
= {INADDR_ANY
};
2918 vrf_id_t tenant_vrf_id
= VRF_DEFAULT
;
2919 struct in_addr mcast_grp
= {INADDR_ANY
};
2920 ifindex_t svi_ifindex
= 0;
2923 vni
= stream_getl(s
);
2924 if (cmd
== ZEBRA_VNI_ADD
) {
2925 vtep_ip
.s_addr
= stream_get_ipv4(s
);
2926 stream_get(&tenant_vrf_id
, s
, sizeof(vrf_id_t
));
2927 mcast_grp
.s_addr
= stream_get_ipv4(s
);
2928 stream_get(&svi_ifindex
, s
, sizeof(ifindex_t
));
2931 bgp
= bgp_lookup_by_vrf_id(vrf_id
);
2935 if (BGP_DEBUG(zebra
, ZEBRA
))
2937 "Rx VNI %s VRF %s VNI %u tenant-vrf %s SVI ifindex %u",
2938 (cmd
== ZEBRA_VNI_ADD
) ? "add" : "del",
2939 vrf_id_to_name(vrf_id
), vni
,
2940 vrf_id_to_name(tenant_vrf_id
), svi_ifindex
);
2942 if (cmd
== ZEBRA_VNI_ADD
) {
2943 frrtrace(4, frr_bgp
, evpn_local_vni_add_zrecv
, vni
, vtep_ip
,
2944 tenant_vrf_id
, mcast_grp
);
2946 return bgp_evpn_local_vni_add(
2948 vtep_ip
.s_addr
!= INADDR_ANY
? vtep_ip
: bgp
->router_id
,
2949 tenant_vrf_id
, mcast_grp
, svi_ifindex
);
2951 frrtrace(1, frr_bgp
, evpn_local_vni_del_zrecv
, vni
);
2953 return bgp_evpn_local_vni_del(bgp
, vni
);
2957 static int bgp_zebra_process_local_macip(ZAPI_CALLBACK_ARGS
)
2966 uint32_t seqnum
= 0;
2968 char buf2
[ESI_STR_LEN
];
2971 memset(&ip
, 0, sizeof(ip
));
2973 vni
= stream_getl(s
);
2974 stream_get(&mac
.octet
, s
, ETH_ALEN
);
2975 ipa_len
= stream_getl(s
);
2976 if (ipa_len
!= 0 && ipa_len
!= IPV4_MAX_BYTELEN
2977 && ipa_len
!= IPV6_MAX_BYTELEN
) {
2978 flog_err(EC_BGP_MACIP_LEN
,
2979 "%u:Recv MACIP %s with invalid IP addr length %d",
2980 vrf_id
, (cmd
== ZEBRA_MACIP_ADD
) ? "Add" : "Del",
2987 (ipa_len
== IPV4_MAX_BYTELEN
) ? IPADDR_V4
: IPADDR_V6
;
2988 stream_get(&ip
.ip
.addr
, s
, ipa_len
);
2990 if (cmd
== ZEBRA_MACIP_ADD
) {
2991 flags
= stream_getc(s
);
2992 seqnum
= stream_getl(s
);
2993 stream_get(&esi
, s
, sizeof(esi_t
));
2995 state
= stream_getl(s
);
2996 memset(&esi
, 0, sizeof(esi_t
));
2999 bgp
= bgp_lookup_by_vrf_id(vrf_id
);
3003 if (BGP_DEBUG(zebra
, ZEBRA
))
3005 "%u:Recv MACIP %s f 0x%x MAC %pEA IP %pIA VNI %u seq %u state %d ESI %s",
3006 vrf_id
, (cmd
== ZEBRA_MACIP_ADD
) ? "Add" : "Del", flags
,
3007 &mac
, &ip
, vni
, seqnum
, state
,
3008 esi_to_str(&esi
, buf2
, sizeof(buf2
)));
3010 if (cmd
== ZEBRA_MACIP_ADD
) {
3011 frrtrace(6, frr_bgp
, evpn_local_macip_add_zrecv
, vni
, &mac
, &ip
,
3012 flags
, seqnum
, &esi
);
3014 return bgp_evpn_local_macip_add(bgp
, vni
, &mac
, &ip
,
3015 flags
, seqnum
, &esi
);
3017 frrtrace(4, frr_bgp
, evpn_local_macip_del_zrecv
, vni
, &mac
, &ip
,
3020 return bgp_evpn_local_macip_del(bgp
, vni
, &mac
, &ip
, state
);
3024 static int bgp_zebra_process_local_ip_prefix(ZAPI_CALLBACK_ARGS
)
3026 struct stream
*s
= NULL
;
3027 struct bgp
*bgp_vrf
= NULL
;
3030 memset(&p
, 0, sizeof(struct prefix
));
3032 stream_get(&p
, s
, sizeof(struct prefix
));
3034 bgp_vrf
= bgp_lookup_by_vrf_id(vrf_id
);
3038 if (BGP_DEBUG(zebra
, ZEBRA
))
3039 zlog_debug("Recv prefix %pFX %s on vrf %s", &p
,
3040 (cmd
== ZEBRA_IP_PREFIX_ROUTE_ADD
) ? "ADD" : "DEL",
3041 vrf_id_to_name(vrf_id
));
3043 if (cmd
== ZEBRA_IP_PREFIX_ROUTE_ADD
) {
3045 if (p
.family
== AF_INET
)
3046 bgp_evpn_advertise_type5_route(bgp_vrf
, &p
, NULL
,
3047 AFI_IP
, SAFI_UNICAST
);
3049 bgp_evpn_advertise_type5_route(bgp_vrf
, &p
, NULL
,
3050 AFI_IP6
, SAFI_UNICAST
);
3053 if (p
.family
== AF_INET
)
3054 bgp_evpn_withdraw_type5_route(bgp_vrf
, &p
, AFI_IP
,
3057 bgp_evpn_withdraw_type5_route(bgp_vrf
, &p
, AFI_IP6
,
3063 static int bgp_zebra_process_label_chunk(ZAPI_CALLBACK_ARGS
)
3065 struct stream
*s
= NULL
;
3066 uint8_t response_keep
;
3070 unsigned short instance
;
3073 STREAM_GETC(s
, proto
);
3074 STREAM_GETW(s
, instance
);
3075 STREAM_GETC(s
, response_keep
);
3076 STREAM_GETL(s
, first
);
3077 STREAM_GETL(s
, last
);
3079 if (zclient
->redist_default
!= proto
) {
3080 flog_err(EC_BGP_LM_ERROR
, "Got LM msg with wrong proto %u",
3084 if (zclient
->instance
!= instance
) {
3085 flog_err(EC_BGP_LM_ERROR
, "Got LM msg with wrong instance %u",
3091 first
< MPLS_LABEL_UNRESERVED_MIN
||
3092 last
> MPLS_LABEL_UNRESERVED_MAX
) {
3094 flog_err(EC_BGP_LM_ERROR
, "%s: Invalid Label chunk: %u - %u",
3095 __func__
, first
, last
);
3098 if (BGP_DEBUG(zebra
, ZEBRA
)) {
3099 zlog_debug("Label Chunk assign: %u - %u (%u) ",
3100 first
, last
, response_keep
);
3103 bgp_lp_event_chunk(response_keep
, first
, last
);
3107 stream_failure
: /* for STREAM_GETX */
3111 extern struct zebra_privs_t bgpd_privs
;
3113 static int bgp_ifp_create(struct interface
*ifp
)
3117 if (BGP_DEBUG(zebra
, ZEBRA
))
3118 zlog_debug("Rx Intf add VRF %u IF %s", ifp
->vrf
->vrf_id
,
3121 bgp
= ifp
->vrf
->info
;
3125 bgp_mac_add_mac_entry(ifp
);
3127 bgp_update_interface_nbrs(bgp
, ifp
, ifp
);
3128 hook_call(bgp_vrf_status_changed
, bgp
, ifp
);
3132 static int bgp_zebra_process_srv6_locator_chunk(ZAPI_CALLBACK_ARGS
)
3134 struct stream
*s
= NULL
;
3135 struct bgp
*bgp
= bgp_get_default();
3136 struct listnode
*node
;
3137 struct prefix_ipv6
*c
;
3138 struct srv6_locator_chunk s6c
= {};
3139 struct prefix_ipv6
*chunk
= NULL
;
3142 zapi_srv6_locator_chunk_decode(s
, &s6c
);
3144 if (strcmp(bgp
->srv6_locator_name
, s6c
.locator_name
) != 0) {
3145 zlog_err("%s: Locator name unmatch %s:%s", __func__
,
3146 bgp
->srv6_locator_name
, s6c
.locator_name
);
3150 for (ALL_LIST_ELEMENTS_RO(bgp
->srv6_locator_chunks
, node
, c
)) {
3151 if (!prefix_cmp(c
, &s6c
.prefix
))
3155 chunk
= prefix_ipv6_new();
3156 *chunk
= s6c
.prefix
;
3157 listnode_add(bgp
->srv6_locator_chunks
, chunk
);
3158 vpn_leak_postchange_all();
3162 static int bgp_zebra_process_srv6_locator_add(ZAPI_CALLBACK_ARGS
)
3164 struct srv6_locator loc
= {};
3165 struct bgp
*bgp
= bgp_get_default();
3166 const char *loc_name
= bgp
->srv6_locator_name
;
3168 if (zapi_srv6_locator_decode(zclient
->ibuf
, &loc
) < 0)
3171 if (!bgp
|| !bgp
->srv6_enabled
)
3174 if (bgp_zebra_srv6_manager_get_locator_chunk(loc_name
) < 0)
3180 static int bgp_zebra_process_srv6_locator_delete(ZAPI_CALLBACK_ARGS
)
3182 struct srv6_locator loc
= {};
3183 struct bgp
*bgp
= bgp_get_default();
3184 struct listnode
*node
, *nnode
;
3185 struct prefix_ipv6
*chunk
;
3186 struct bgp_srv6_function
*func
;
3187 struct bgp
*bgp_vrf
;
3188 struct in6_addr
*tovpn_sid
;
3189 struct prefix_ipv6 tmp_prefi
;
3191 if (zapi_srv6_locator_decode(zclient
->ibuf
, &loc
) < 0)
3195 for (ALL_LIST_ELEMENTS(bgp
->srv6_locator_chunks
, node
, nnode
, chunk
))
3196 if (prefix_match((struct prefix
*)&loc
.prefix
,
3197 (struct prefix
*)chunk
))
3198 listnode_delete(bgp
->srv6_locator_chunks
, chunk
);
3200 // refresh functions
3201 for (ALL_LIST_ELEMENTS(bgp
->srv6_functions
, node
, nnode
, func
)) {
3202 tmp_prefi
.family
= AF_INET6
;
3203 tmp_prefi
.prefixlen
= 128;
3204 tmp_prefi
.prefix
= func
->sid
;
3205 if (prefix_match((struct prefix
*)&loc
.prefix
,
3206 (struct prefix
*)&tmp_prefi
))
3207 listnode_delete(bgp
->srv6_functions
, func
);
3210 // refresh tovpn_sid
3211 for (ALL_LIST_ELEMENTS_RO(bm
->bgp
, node
, bgp_vrf
)) {
3212 if (bgp_vrf
->inst_type
!= BGP_INSTANCE_TYPE_VRF
)
3215 // refresh vpnv4 tovpn_sid
3216 tovpn_sid
= bgp_vrf
->vpn_policy
[AFI_IP
].tovpn_sid
;
3218 tmp_prefi
.family
= AF_INET6
;
3219 tmp_prefi
.prefixlen
= 128;
3220 tmp_prefi
.prefix
= *tovpn_sid
;
3221 if (prefix_match((struct prefix
*)&loc
.prefix
,
3222 (struct prefix
*)&tmp_prefi
))
3223 XFREE(MTYPE_BGP_SRV6_SID
,
3224 bgp_vrf
->vpn_policy
[AFI_IP
].tovpn_sid
);
3227 // refresh vpnv6 tovpn_sid
3228 tovpn_sid
= bgp_vrf
->vpn_policy
[AFI_IP6
].tovpn_sid
;
3230 tmp_prefi
.family
= AF_INET6
;
3231 tmp_prefi
.prefixlen
= 128;
3232 tmp_prefi
.prefix
= *tovpn_sid
;
3233 if (prefix_match((struct prefix
*)&loc
.prefix
,
3234 (struct prefix
*)&tmp_prefi
))
3235 XFREE(MTYPE_BGP_SRV6_SID
,
3236 bgp_vrf
->vpn_policy
[AFI_IP6
].tovpn_sid
);
3240 vpn_leak_postchange_all();
3244 static zclient_handler
*const bgp_handlers
[] = {
3245 [ZEBRA_ROUTER_ID_UPDATE
] = bgp_router_id_update
,
3246 [ZEBRA_INTERFACE_ADDRESS_ADD
] = bgp_interface_address_add
,
3247 [ZEBRA_INTERFACE_ADDRESS_DELETE
] = bgp_interface_address_delete
,
3248 [ZEBRA_INTERFACE_NBR_ADDRESS_ADD
] = bgp_interface_nbr_address_add
,
3249 [ZEBRA_INTERFACE_NBR_ADDRESS_DELETE
] = bgp_interface_nbr_address_delete
,
3250 [ZEBRA_INTERFACE_VRF_UPDATE
] = bgp_interface_vrf_update
,
3251 [ZEBRA_REDISTRIBUTE_ROUTE_ADD
] = zebra_read_route
,
3252 [ZEBRA_REDISTRIBUTE_ROUTE_DEL
] = zebra_read_route
,
3253 [ZEBRA_NEXTHOP_UPDATE
] = bgp_read_nexthop_update
,
3254 [ZEBRA_FEC_UPDATE
] = bgp_read_fec_update
,
3255 [ZEBRA_LOCAL_ES_ADD
] = bgp_zebra_process_local_es_add
,
3256 [ZEBRA_LOCAL_ES_DEL
] = bgp_zebra_process_local_es_del
,
3257 [ZEBRA_VNI_ADD
] = bgp_zebra_process_local_vni
,
3258 [ZEBRA_LOCAL_ES_EVI_ADD
] = bgp_zebra_process_local_es_evi
,
3259 [ZEBRA_LOCAL_ES_EVI_DEL
] = bgp_zebra_process_local_es_evi
,
3260 [ZEBRA_VNI_DEL
] = bgp_zebra_process_local_vni
,
3261 [ZEBRA_MACIP_ADD
] = bgp_zebra_process_local_macip
,
3262 [ZEBRA_MACIP_DEL
] = bgp_zebra_process_local_macip
,
3263 [ZEBRA_L3VNI_ADD
] = bgp_zebra_process_local_l3vni
,
3264 [ZEBRA_L3VNI_DEL
] = bgp_zebra_process_local_l3vni
,
3265 [ZEBRA_IP_PREFIX_ROUTE_ADD
] = bgp_zebra_process_local_ip_prefix
,
3266 [ZEBRA_IP_PREFIX_ROUTE_DEL
] = bgp_zebra_process_local_ip_prefix
,
3267 [ZEBRA_GET_LABEL_CHUNK
] = bgp_zebra_process_label_chunk
,
3268 [ZEBRA_RULE_NOTIFY_OWNER
] = rule_notify_owner
,
3269 [ZEBRA_IPSET_NOTIFY_OWNER
] = ipset_notify_owner
,
3270 [ZEBRA_IPSET_ENTRY_NOTIFY_OWNER
] = ipset_entry_notify_owner
,
3271 [ZEBRA_IPTABLE_NOTIFY_OWNER
] = iptable_notify_owner
,
3272 [ZEBRA_ROUTE_NOTIFY_OWNER
] = bgp_zebra_route_notify_owner
,
3273 [ZEBRA_SRV6_LOCATOR_ADD
] = bgp_zebra_process_srv6_locator_add
,
3274 [ZEBRA_SRV6_LOCATOR_DELETE
] = bgp_zebra_process_srv6_locator_delete
,
3275 [ZEBRA_SRV6_MANAGER_GET_LOCATOR_CHUNK
] =
3276 bgp_zebra_process_srv6_locator_chunk
,
3279 void bgp_zebra_init(struct thread_master
*master
, unsigned short instance
)
3281 zclient_num_connects
= 0;
3283 if_zapi_callbacks(bgp_ifp_create
, bgp_ifp_up
,
3284 bgp_ifp_down
, bgp_ifp_destroy
);
3286 /* Set default values. */
3287 zclient
= zclient_new(master
, &zclient_options_default
, bgp_handlers
,
3288 array_size(bgp_handlers
));
3289 zclient_init(zclient
, ZEBRA_ROUTE_BGP
, 0, &bgpd_privs
);
3290 zclient
->zebra_connected
= bgp_zebra_connected
;
3291 zclient
->instance
= instance
;
3294 void bgp_zebra_destroy(void)
3296 if (zclient
== NULL
)
3298 zclient_stop(zclient
);
3299 zclient_free(zclient
);
3303 int bgp_zebra_num_connects(void)
3305 return zclient_num_connects
;
3308 void bgp_send_pbr_rule_action(struct bgp_pbr_action
*pbra
,
3309 struct bgp_pbr_rule
*pbr
,
3314 if (pbra
->install_in_progress
&& !pbr
)
3316 if (pbr
&& pbr
->install_in_progress
)
3318 if (BGP_DEBUG(zebra
, ZEBRA
)) {
3320 zlog_debug("%s: table %d (ip rule) %d", __func__
,
3321 pbra
->table_id
, install
);
3323 zlog_debug("%s: table %d fwmark %d %d", __func__
,
3324 pbra
->table_id
, pbra
->fwmark
, install
);
3329 zclient_create_header(s
,
3330 install
? ZEBRA_RULE_ADD
: ZEBRA_RULE_DELETE
,
3332 stream_putl(s
, 1); /* send one pbr action */
3334 bgp_encode_pbr_rule_action(s
, pbra
, pbr
);
3336 stream_putw_at(s
, 0, stream_get_endp(s
));
3337 if ((zclient_send_message(zclient
) != ZCLIENT_SEND_FAILURE
)
3340 pbra
->install_in_progress
= true;
3342 pbr
->install_in_progress
= true;
3346 void bgp_send_pbr_ipset_match(struct bgp_pbr_match
*pbrim
, bool install
)
3350 if (pbrim
->install_in_progress
)
3352 if (BGP_DEBUG(zebra
, ZEBRA
))
3353 zlog_debug("%s: name %s type %d %d, ID %u", __func__
,
3354 pbrim
->ipset_name
, pbrim
->type
, install
,
3359 zclient_create_header(s
,
3360 install
? ZEBRA_IPSET_CREATE
:
3361 ZEBRA_IPSET_DESTROY
,
3364 stream_putl(s
, 1); /* send one pbr action */
3366 bgp_encode_pbr_ipset_match(s
, pbrim
);
3368 stream_putw_at(s
, 0, stream_get_endp(s
));
3369 if ((zclient_send_message(zclient
) != ZCLIENT_SEND_FAILURE
) && install
)
3370 pbrim
->install_in_progress
= true;
3373 void bgp_send_pbr_ipset_entry_match(struct bgp_pbr_match_entry
*pbrime
,
3378 if (pbrime
->install_in_progress
)
3380 if (BGP_DEBUG(zebra
, ZEBRA
))
3381 zlog_debug("%s: name %s %d %d, ID %u", __func__
,
3382 pbrime
->backpointer
->ipset_name
, pbrime
->unique
,
3383 install
, pbrime
->unique
);
3387 zclient_create_header(s
,
3388 install
? ZEBRA_IPSET_ENTRY_ADD
:
3389 ZEBRA_IPSET_ENTRY_DELETE
,
3392 stream_putl(s
, 1); /* send one pbr action */
3394 bgp_encode_pbr_ipset_entry_match(s
, pbrime
);
3396 stream_putw_at(s
, 0, stream_get_endp(s
));
3397 if ((zclient_send_message(zclient
) != ZCLIENT_SEND_FAILURE
) && install
)
3398 pbrime
->install_in_progress
= true;
3401 static void bgp_encode_pbr_interface_list(struct bgp
*bgp
, struct stream
*s
,
3404 struct bgp_pbr_config
*bgp_pbr_cfg
= bgp
->bgp_pbr_cfg
;
3405 struct bgp_pbr_interface_head
*head
;
3406 struct bgp_pbr_interface
*pbr_if
;
3407 struct interface
*ifp
;
3411 if (family
== AF_INET
)
3412 head
= &(bgp_pbr_cfg
->ifaces_by_name_ipv4
);
3414 head
= &(bgp_pbr_cfg
->ifaces_by_name_ipv6
);
3415 RB_FOREACH (pbr_if
, bgp_pbr_interface_head
, head
) {
3416 ifp
= if_lookup_by_name(pbr_if
->name
, bgp
->vrf_id
);
3418 stream_putl(s
, ifp
->ifindex
);
3422 static int bgp_pbr_get_ifnumber(struct bgp
*bgp
, uint8_t family
)
3424 struct bgp_pbr_config
*bgp_pbr_cfg
= bgp
->bgp_pbr_cfg
;
3425 struct bgp_pbr_interface_head
*head
;
3426 struct bgp_pbr_interface
*pbr_if
;
3431 if (family
== AF_INET
)
3432 head
= &(bgp_pbr_cfg
->ifaces_by_name_ipv4
);
3434 head
= &(bgp_pbr_cfg
->ifaces_by_name_ipv6
);
3435 RB_FOREACH (pbr_if
, bgp_pbr_interface_head
, head
) {
3436 if (if_lookup_by_name(pbr_if
->name
, bgp
->vrf_id
))
3442 void bgp_send_pbr_iptable(struct bgp_pbr_action
*pba
,
3443 struct bgp_pbr_match
*pbm
,
3450 if (pbm
->install_iptable_in_progress
)
3452 if (BGP_DEBUG(zebra
, ZEBRA
))
3453 zlog_debug("%s: name %s type %d mark %d %d, ID %u", __func__
,
3454 pbm
->ipset_name
, pbm
->type
, pba
->fwmark
, install
,
3459 zclient_create_header(s
,
3460 install
? ZEBRA_IPTABLE_ADD
:
3461 ZEBRA_IPTABLE_DELETE
,
3464 bgp_encode_pbr_iptable_match(s
, pba
, pbm
);
3465 nb_interface
= bgp_pbr_get_ifnumber(pba
->bgp
, pbm
->family
);
3466 stream_putl(s
, nb_interface
);
3468 bgp_encode_pbr_interface_list(pba
->bgp
, s
, pbm
->family
);
3469 stream_putw_at(s
, 0, stream_get_endp(s
));
3470 ret
= zclient_send_message(zclient
);
3472 if (ret
!= ZCLIENT_SEND_FAILURE
)
3475 pbm
->install_iptable_in_progress
= true;
3479 /* inject in table <table_id> a default route to:
3480 * - if nexthop IP is present : to this nexthop
3481 * - if vrf is different from local : to the matching VRF
3483 void bgp_zebra_announce_default(struct bgp
*bgp
, struct nexthop
*nh
,
3484 afi_t afi
, uint32_t table_id
, bool announce
)
3486 struct zapi_nexthop
*api_nh
;
3487 struct zapi_route api
;
3490 if (!nh
|| (nh
->type
!= NEXTHOP_TYPE_IPV4
3491 && nh
->type
!= NEXTHOP_TYPE_IPV6
)
3492 || nh
->vrf_id
== VRF_UNKNOWN
)
3495 /* in vrf-lite, no default route has to be announced
3496 * the table id of vrf is directly used to divert traffic
3498 if (!vrf_is_backend_netns() && bgp
->vrf_id
!= nh
->vrf_id
)
3501 memset(&p
, 0, sizeof(struct prefix
));
3502 if (afi
!= AFI_IP
&& afi
!= AFI_IP6
)
3504 p
.family
= afi2family(afi
);
3505 memset(&api
, 0, sizeof(api
));
3506 api
.vrf_id
= bgp
->vrf_id
;
3507 api
.type
= ZEBRA_ROUTE_BGP
;
3508 api
.safi
= SAFI_UNICAST
;
3510 api
.tableid
= table_id
;
3511 api
.nexthop_num
= 1;
3512 SET_FLAG(api
.message
, ZAPI_MESSAGE_TABLEID
);
3513 SET_FLAG(api
.message
, ZAPI_MESSAGE_NEXTHOP
);
3514 api_nh
= &api
.nexthops
[0];
3516 api
.distance
= ZEBRA_EBGP_DISTANCE_DEFAULT
;
3517 SET_FLAG(api
.message
, ZAPI_MESSAGE_DISTANCE
);
3520 if (afi
== AFI_IP
&& nh
->gate
.ipv4
.s_addr
!= INADDR_ANY
) {
3521 char buff
[PREFIX_STRLEN
];
3523 api_nh
->vrf_id
= nh
->vrf_id
;
3524 api_nh
->gate
.ipv4
= nh
->gate
.ipv4
;
3525 api_nh
->type
= NEXTHOP_TYPE_IPV4
;
3527 inet_ntop(AF_INET
, &(nh
->gate
.ipv4
), buff
, INET_ADDRSTRLEN
);
3528 if (BGP_DEBUG(zebra
, ZEBRA
))
3529 zlog_debug("BGP: %s default route to %s table %d (redirect IP)",
3530 announce
? "adding" : "withdrawing",
3532 zclient_route_send(announce
? ZEBRA_ROUTE_ADD
3533 : ZEBRA_ROUTE_DELETE
,
3535 } else if (afi
== AFI_IP6
&&
3536 memcmp(&nh
->gate
.ipv6
,
3537 &in6addr_any
, sizeof(struct in6_addr
))) {
3538 char buff
[PREFIX_STRLEN
];
3540 api_nh
->vrf_id
= nh
->vrf_id
;
3541 memcpy(&api_nh
->gate
.ipv6
, &nh
->gate
.ipv6
,
3542 sizeof(struct in6_addr
));
3543 api_nh
->type
= NEXTHOP_TYPE_IPV6
;
3545 inet_ntop(AF_INET6
, &(nh
->gate
.ipv6
), buff
, INET_ADDRSTRLEN
);
3546 if (BGP_DEBUG(zebra
, ZEBRA
))
3547 zlog_debug("BGP: %s default route to %s table %d (redirect IP)",
3548 announce
? "adding" : "withdrawing",
3550 zclient_route_send(announce
? ZEBRA_ROUTE_ADD
3551 : ZEBRA_ROUTE_DELETE
,
3553 } else if (nh
->vrf_id
!= bgp
->vrf_id
) {
3555 struct interface
*ifp
;
3557 vrf
= vrf_lookup_by_id(nh
->vrf_id
);
3560 /* create default route with interface <VRF>
3561 * with nexthop-vrf <VRF>
3563 ifp
= if_lookup_by_name_vrf(vrf
->name
, vrf
);
3566 api_nh
->vrf_id
= nh
->vrf_id
;
3567 api_nh
->type
= NEXTHOP_TYPE_IFINDEX
;
3568 api_nh
->ifindex
= ifp
->ifindex
;
3569 if (BGP_DEBUG(zebra
, ZEBRA
))
3570 zlog_info("BGP: %s default route to %s table %d (redirect VRF)",
3571 announce
? "adding" : "withdrawing",
3572 vrf
->name
, table_id
);
3573 zclient_route_send(announce
? ZEBRA_ROUTE_ADD
3574 : ZEBRA_ROUTE_DELETE
,
3580 /* Send capabilities to RIB */
3581 int bgp_zebra_send_capabilities(struct bgp
*bgp
, bool disable
)
3583 struct zapi_cap api
;
3584 int ret
= BGP_GR_SUCCESS
;
3586 if (zclient
== NULL
) {
3587 if (BGP_DEBUG(zebra
, ZEBRA
))
3588 zlog_debug("zclient invalid");
3589 return BGP_GR_FAILURE
;
3592 /* Check if the client is connected */
3593 if ((zclient
->sock
< 0) || (zclient
->t_connect
)) {
3594 if (BGP_DEBUG(zebra
, ZEBRA
))
3595 zlog_debug("client not connected");
3596 return BGP_GR_FAILURE
;
3599 /* Check if capability is already sent. If the flag force is set
3600 * send the capability since this can be initial bgp configuration
3602 memset(&api
, 0, sizeof(struct zapi_cap
));
3604 api
.cap
= ZEBRA_CLIENT_GR_DISABLE
;
3605 api
.vrf_id
= bgp
->vrf_id
;
3607 api
.cap
= ZEBRA_CLIENT_GR_CAPABILITIES
;
3608 api
.stale_removal_time
= bgp
->rib_stale_time
;
3609 api
.vrf_id
= bgp
->vrf_id
;
3612 if (zclient_capabilities_send(ZEBRA_CLIENT_CAPABILITIES
, zclient
, &api
)
3613 == ZCLIENT_SEND_FAILURE
) {
3614 zlog_err("error sending capability");
3615 ret
= BGP_GR_FAILURE
;
3618 bgp
->present_zebra_gr_state
= ZEBRA_GR_DISABLE
;
3620 bgp
->present_zebra_gr_state
= ZEBRA_GR_ENABLE
;
3622 if (BGP_DEBUG(zebra
, ZEBRA
))
3623 zlog_debug("send capabilty success");
3624 ret
= BGP_GR_SUCCESS
;
3629 /* Send route update pesding or completed status to RIB for the
3630 * specific AFI, SAFI
3632 int bgp_zebra_update(afi_t afi
, safi_t safi
, vrf_id_t vrf_id
, int type
)
3634 struct zapi_cap api
= {0};
3636 if (zclient
== NULL
) {
3637 if (BGP_DEBUG(zebra
, ZEBRA
))
3638 zlog_debug("zclient == NULL, invalid");
3639 return BGP_GR_FAILURE
;
3642 /* Check if the client is connected */
3643 if ((zclient
->sock
< 0) || (zclient
->t_connect
)) {
3644 if (BGP_DEBUG(zebra
, ZEBRA
))
3645 zlog_debug("client not connected");
3646 return BGP_GR_FAILURE
;
3651 api
.vrf_id
= vrf_id
;
3654 if (zclient_capabilities_send(ZEBRA_CLIENT_CAPABILITIES
, zclient
, &api
)
3655 == ZCLIENT_SEND_FAILURE
) {
3656 if (BGP_DEBUG(zebra
, ZEBRA
))
3657 zlog_debug("error sending capability");
3658 return BGP_GR_FAILURE
;
3660 return BGP_GR_SUCCESS
;
3664 /* Send RIB stale timer update */
3665 int bgp_zebra_stale_timer_update(struct bgp
*bgp
)
3667 struct zapi_cap api
;
3669 if (zclient
== NULL
) {
3670 if (BGP_DEBUG(zebra
, ZEBRA
))
3671 zlog_debug("zclient invalid");
3672 return BGP_GR_FAILURE
;
3675 /* Check if the client is connected */
3676 if ((zclient
->sock
< 0) || (zclient
->t_connect
)) {
3677 if (BGP_DEBUG(zebra
, ZEBRA
))
3678 zlog_debug("client not connected");
3679 return BGP_GR_FAILURE
;
3682 memset(&api
, 0, sizeof(struct zapi_cap
));
3683 api
.cap
= ZEBRA_CLIENT_RIB_STALE_TIME
;
3684 api
.stale_removal_time
= bgp
->rib_stale_time
;
3685 api
.vrf_id
= bgp
->vrf_id
;
3686 if (zclient_capabilities_send(ZEBRA_CLIENT_CAPABILITIES
, zclient
, &api
)
3687 == ZCLIENT_SEND_FAILURE
) {
3688 if (BGP_DEBUG(zebra
, ZEBRA
))
3689 zlog_debug("error sending capability");
3690 return BGP_GR_FAILURE
;
3692 if (BGP_DEBUG(zebra
, ZEBRA
))
3693 zlog_debug("send capabilty success");
3694 return BGP_GR_SUCCESS
;
3697 int bgp_zebra_srv6_manager_get_locator_chunk(const char *name
)
3699 return srv6_manager_get_locator_chunk(zclient
, name
);
3702 int bgp_zebra_srv6_manager_release_locator_chunk(const char *name
)
3704 return srv6_manager_release_locator_chunk(zclient
, name
);