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_mac.h"
65 /* All information about zebra. */
66 struct zclient
*zclient
= NULL
;
68 /* Can we install into zebra? */
69 static inline int bgp_install_info_to_zebra(struct bgp
*bgp
)
71 if (zclient
->sock
<= 0)
74 if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp
)) {
75 zlog_debug("%s: No zebra instance to talk to, not installing information",
83 int zclient_num_connects
;
85 /* Router-id update message from zebra. */
86 static int bgp_router_id_update(ZAPI_CALLBACK_ARGS
)
88 struct prefix router_id
;
90 zebra_router_id_update_read(zclient
->ibuf
, &router_id
);
92 if (BGP_DEBUG(zebra
, ZEBRA
)) {
93 char buf
[PREFIX2STR_BUFFER
];
94 prefix2str(&router_id
, buf
, sizeof(buf
));
95 zlog_debug("Rx Router Id update VRF %u Id %s", vrf_id
, buf
);
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 /* Inteface addition message from zebra. */
206 static int bgp_interface_add(ZAPI_CALLBACK_ARGS
)
208 struct interface
*ifp
;
211 ifp
= zebra_interface_add_read(zclient
->ibuf
, vrf_id
);
212 if (!ifp
) // unexpected
215 if (BGP_DEBUG(zebra
, ZEBRA
) && ifp
)
216 zlog_debug("Rx Intf add VRF %u IF %s", vrf_id
, ifp
->name
);
218 bgp
= bgp_lookup_by_vrf_id(vrf_id
);
222 bgp_mac_add_mac_entry(ifp
);
224 bgp_update_interface_nbrs(bgp
, ifp
, ifp
);
228 static int bgp_interface_delete(ZAPI_CALLBACK_ARGS
)
231 struct interface
*ifp
;
234 bgp
= bgp_lookup_by_vrf_id(vrf_id
);
237 ifp
= zebra_interface_state_read(s
, vrf_id
);
238 if (!ifp
) /* This may happen if we've just unregistered for a VRF. */
241 if (BGP_DEBUG(zebra
, ZEBRA
))
242 zlog_debug("Rx Intf del VRF %u IF %s", vrf_id
, ifp
->name
);
245 bgp_update_interface_nbrs(bgp
, ifp
, NULL
);
247 bgp_mac_del_mac_entry(ifp
);
249 if_set_index(ifp
, IFINDEX_INTERNAL
);
253 static int bgp_interface_up(ZAPI_CALLBACK_ARGS
)
256 struct interface
*ifp
;
258 struct nbr_connected
*nc
;
259 struct listnode
*node
, *nnode
;
262 bgp
= bgp_lookup_by_vrf_id(vrf_id
);
265 ifp
= zebra_interface_state_read(s
, vrf_id
);
270 bgp_mac_add_mac_entry(ifp
);
272 if (BGP_DEBUG(zebra
, ZEBRA
))
273 zlog_debug("Rx Intf up VRF %u IF %s", vrf_id
, ifp
->name
);
278 for (ALL_LIST_ELEMENTS(ifp
->connected
, node
, nnode
, c
))
279 bgp_connected_add(bgp
, c
);
281 for (ALL_LIST_ELEMENTS(ifp
->nbr_connected
, node
, nnode
, nc
))
282 bgp_nbr_connected_add(bgp
, nc
);
287 static int bgp_interface_down(ZAPI_CALLBACK_ARGS
)
290 struct interface
*ifp
;
292 struct nbr_connected
*nc
;
293 struct listnode
*node
, *nnode
;
297 bgp
= bgp_lookup_by_vrf_id(vrf_id
);
300 ifp
= zebra_interface_state_read(s
, vrf_id
);
304 bgp_mac_del_mac_entry(ifp
);
306 if (BGP_DEBUG(zebra
, ZEBRA
))
307 zlog_debug("Rx Intf down VRF %u IF %s", vrf_id
, ifp
->name
);
312 for (ALL_LIST_ELEMENTS(ifp
->connected
, node
, nnode
, c
))
313 bgp_connected_delete(bgp
, c
);
315 for (ALL_LIST_ELEMENTS(ifp
->nbr_connected
, node
, nnode
, nc
))
316 bgp_nbr_connected_delete(bgp
, nc
, 1);
318 /* Fast external-failover */
319 if (!CHECK_FLAG(bgp
->flags
, BGP_FLAG_NO_FAST_EXT_FAILOVER
)) {
321 for (ALL_LIST_ELEMENTS(bgp
->peer
, node
, nnode
, peer
)) {
322 #if defined(HAVE_CUMULUS)
323 /* Take down directly connected EBGP peers as well as
325 * tracked (directly connected) IBGP peers.
327 if ((peer
->ttl
!= 1) && (peer
->gtsm_hops
!= 1)
329 || bgp_bfd_is_peer_multihop(peer
)))
331 /* Take down directly connected EBGP peers */
332 if ((peer
->ttl
!= 1) && (peer
->gtsm_hops
!= 1))
336 if (ifp
== peer
->nexthop
.ifp
) {
337 BGP_EVENT_ADD(peer
, BGP_Stop
);
338 peer
->last_reset
= PEER_DOWN_IF_DOWN
;
346 static int bgp_interface_address_add(ZAPI_CALLBACK_ARGS
)
348 struct connected
*ifc
;
351 bgp
= bgp_lookup_by_vrf_id(vrf_id
);
353 ifc
= zebra_interface_address_read(cmd
, zclient
->ibuf
, vrf_id
);
358 if (bgp_debug_zebra(ifc
->address
)) {
359 char buf
[PREFIX2STR_BUFFER
];
360 prefix2str(ifc
->address
, buf
, sizeof(buf
));
361 zlog_debug("Rx Intf address add VRF %u IF %s addr %s", vrf_id
,
362 ifc
->ifp
->name
, buf
);
368 if (if_is_operative(ifc
->ifp
)) {
369 bgp_connected_add(bgp
, ifc
);
371 /* If we have learnt of any neighbors on this interface,
372 * check to kick off any BGP interface-based neighbors,
373 * but only if this is a link-local address.
375 if (IN6_IS_ADDR_LINKLOCAL(&ifc
->address
->u
.prefix6
)
376 && !list_isempty(ifc
->ifp
->nbr_connected
))
377 bgp_start_interface_nbrs(bgp
, ifc
->ifp
);
383 static int bgp_interface_address_delete(ZAPI_CALLBACK_ARGS
)
385 struct connected
*ifc
;
388 bgp
= bgp_lookup_by_vrf_id(vrf_id
);
390 ifc
= zebra_interface_address_read(cmd
, zclient
->ibuf
, vrf_id
);
395 if (bgp_debug_zebra(ifc
->address
)) {
396 char buf
[PREFIX2STR_BUFFER
];
397 prefix2str(ifc
->address
, buf
, sizeof(buf
));
398 zlog_debug("Rx Intf address del VRF %u IF %s addr %s", vrf_id
,
399 ifc
->ifp
->name
, buf
);
402 if (bgp
&& if_is_operative(ifc
->ifp
)) {
403 bgp_connected_delete(bgp
, ifc
);
411 static int bgp_interface_nbr_address_add(ZAPI_CALLBACK_ARGS
)
413 struct nbr_connected
*ifc
= NULL
;
416 ifc
= zebra_interface_nbr_address_read(cmd
, zclient
->ibuf
, vrf_id
);
421 if (bgp_debug_zebra(ifc
->address
)) {
422 char buf
[PREFIX2STR_BUFFER
];
423 prefix2str(ifc
->address
, buf
, sizeof(buf
));
424 zlog_debug("Rx Intf neighbor add VRF %u IF %s addr %s", vrf_id
,
425 ifc
->ifp
->name
, buf
);
428 if (if_is_operative(ifc
->ifp
)) {
429 bgp
= bgp_lookup_by_vrf_id(vrf_id
);
431 bgp_nbr_connected_add(bgp
, ifc
);
437 static int bgp_interface_nbr_address_delete(ZAPI_CALLBACK_ARGS
)
439 struct nbr_connected
*ifc
= NULL
;
442 ifc
= zebra_interface_nbr_address_read(cmd
, zclient
->ibuf
, vrf_id
);
447 if (bgp_debug_zebra(ifc
->address
)) {
448 char buf
[PREFIX2STR_BUFFER
];
449 prefix2str(ifc
->address
, buf
, sizeof(buf
));
450 zlog_debug("Rx Intf neighbor del VRF %u IF %s addr %s", vrf_id
,
451 ifc
->ifp
->name
, buf
);
454 if (if_is_operative(ifc
->ifp
)) {
455 bgp
= bgp_lookup_by_vrf_id(vrf_id
);
457 bgp_nbr_connected_delete(bgp
, ifc
, 0);
460 nbr_connected_free(ifc
);
465 /* VRF update for an interface. */
466 static int bgp_interface_vrf_update(ZAPI_CALLBACK_ARGS
)
468 struct interface
*ifp
;
471 struct nbr_connected
*nc
;
472 struct listnode
*node
, *nnode
;
476 ifp
= zebra_interface_vrf_update_read(zclient
->ibuf
, vrf_id
,
481 if (BGP_DEBUG(zebra
, ZEBRA
) && ifp
)
482 zlog_debug("Rx Intf VRF change VRF %u IF %s NewVRF %u", vrf_id
,
483 ifp
->name
, new_vrf_id
);
485 bgp
= bgp_lookup_by_vrf_id(vrf_id
);
488 for (ALL_LIST_ELEMENTS(ifp
->connected
, node
, nnode
, c
))
489 bgp_connected_delete(bgp
, c
);
491 for (ALL_LIST_ELEMENTS(ifp
->nbr_connected
, node
, nnode
, nc
))
492 bgp_nbr_connected_delete(bgp
, nc
, 1);
494 /* Fast external-failover */
495 if (!CHECK_FLAG(bgp
->flags
, BGP_FLAG_NO_FAST_EXT_FAILOVER
)) {
496 for (ALL_LIST_ELEMENTS(bgp
->peer
, node
, nnode
, peer
)) {
497 if ((peer
->ttl
!= 1) && (peer
->gtsm_hops
!= 1))
500 if (ifp
== peer
->nexthop
.ifp
)
501 BGP_EVENT_ADD(peer
, BGP_Stop
);
506 if_update_to_new_vrf(ifp
, new_vrf_id
);
508 bgp
= bgp_lookup_by_vrf_id(new_vrf_id
);
512 for (ALL_LIST_ELEMENTS(ifp
->connected
, node
, nnode
, c
))
513 bgp_connected_add(bgp
, c
);
515 for (ALL_LIST_ELEMENTS(ifp
->nbr_connected
, node
, nnode
, nc
))
516 bgp_nbr_connected_add(bgp
, nc
);
520 /* Zebra route add and delete treatment. */
521 static int zebra_read_route(ZAPI_CALLBACK_ARGS
)
523 enum nexthop_types_t nhtype
;
524 struct zapi_route api
;
525 union g_addr nexthop
;
530 bgp
= bgp_lookup_by_vrf_id(vrf_id
);
534 if (zapi_route_decode(zclient
->ibuf
, &api
) < 0)
537 /* we completely ignore srcdest routes for now. */
538 if (CHECK_FLAG(api
.message
, ZAPI_MESSAGE_SRCPFX
))
541 /* ignore link-local address. */
542 if (api
.prefix
.family
== AF_INET6
543 && IN6_IS_ADDR_LINKLOCAL(&api
.prefix
.u
.prefix6
))
546 nexthop
= api
.nexthops
[0].gate
;
547 ifindex
= api
.nexthops
[0].ifindex
;
548 nhtype
= api
.nexthops
[0].type
;
550 add
= (cmd
== ZEBRA_REDISTRIBUTE_ROUTE_ADD
);
553 * The ADD message is actually an UPDATE and there is no
555 * for a prior redistributed route, if any. So, perform an
557 * DEL processing for the same redistributed route from any
561 for (i
= 0; i
< ZEBRA_ROUTE_MAX
; i
++) {
563 bgp_redistribute_delete(bgp
, &api
.prefix
, i
,
567 /* Now perform the add/update. */
568 bgp_redistribute_add(bgp
, &api
.prefix
, &nexthop
, ifindex
,
569 nhtype
, api
.metric
, api
.type
, api
.instance
,
572 bgp_redistribute_delete(bgp
, &api
.prefix
, api
.type
,
576 if (bgp_debug_zebra(&api
.prefix
)) {
577 char buf
[2][PREFIX_STRLEN
];
579 prefix2str(&api
.prefix
, buf
[0], sizeof(buf
[0]));
581 inet_ntop(api
.prefix
.family
, &nexthop
, buf
[1],
584 "Rx route ADD VRF %u %s[%d] %s nexthop %s (type %d if %u) metric %u tag %" ROUTE_TAG_PRI
,
585 vrf_id
, zebra_route_string(api
.type
),
586 api
.instance
, buf
[0], buf
[1], nhtype
,
587 ifindex
, api
.metric
, api
.tag
);
590 "Rx route DEL VRF %u %s[%d] %s",
591 vrf_id
, zebra_route_string(api
.type
),
592 api
.instance
, buf
[0]);
599 struct interface
*if_lookup_by_ipv4(struct in_addr
*addr
, vrf_id_t vrf_id
)
602 struct listnode
*cnode
;
603 struct interface
*ifp
;
604 struct connected
*connected
;
605 struct prefix_ipv4 p
;
608 vrf
= vrf_lookup_by_id(vrf_id
);
614 p
.prefixlen
= IPV4_MAX_BITLEN
;
616 FOR_ALL_INTERFACES (vrf
, ifp
) {
617 for (ALL_LIST_ELEMENTS_RO(ifp
->connected
, cnode
, connected
)) {
618 cp
= connected
->address
;
620 if (cp
->family
== AF_INET
)
621 if (prefix_match(cp
, (struct prefix
*)&p
))
628 struct interface
*if_lookup_by_ipv4_exact(struct in_addr
*addr
, vrf_id_t vrf_id
)
631 struct listnode
*cnode
;
632 struct interface
*ifp
;
633 struct connected
*connected
;
636 vrf
= vrf_lookup_by_id(vrf_id
);
640 FOR_ALL_INTERFACES (vrf
, ifp
) {
641 for (ALL_LIST_ELEMENTS_RO(ifp
->connected
, cnode
, connected
)) {
642 cp
= connected
->address
;
644 if (cp
->family
== AF_INET
)
645 if (IPV4_ADDR_SAME(&cp
->u
.prefix4
, addr
))
652 struct interface
*if_lookup_by_ipv6(struct in6_addr
*addr
, ifindex_t ifindex
,
656 struct listnode
*cnode
;
657 struct interface
*ifp
;
658 struct connected
*connected
;
659 struct prefix_ipv6 p
;
662 vrf
= vrf_lookup_by_id(vrf_id
);
668 p
.prefixlen
= IPV6_MAX_BITLEN
;
670 FOR_ALL_INTERFACES (vrf
, ifp
) {
671 for (ALL_LIST_ELEMENTS_RO(ifp
->connected
, cnode
, connected
)) {
672 cp
= connected
->address
;
674 if (cp
->family
== AF_INET6
)
675 if (prefix_match(cp
, (struct prefix
*)&p
)) {
676 if (IN6_IS_ADDR_LINKLOCAL(
678 if (ifindex
== ifp
->ifindex
)
688 struct interface
*if_lookup_by_ipv6_exact(struct in6_addr
*addr
,
689 ifindex_t ifindex
, vrf_id_t vrf_id
)
692 struct listnode
*cnode
;
693 struct interface
*ifp
;
694 struct connected
*connected
;
697 vrf
= vrf_lookup_by_id(vrf_id
);
701 FOR_ALL_INTERFACES (vrf
, ifp
) {
702 for (ALL_LIST_ELEMENTS_RO(ifp
->connected
, cnode
, connected
)) {
703 cp
= connected
->address
;
705 if (cp
->family
== AF_INET6
)
706 if (IPV6_ADDR_SAME(&cp
->u
.prefix6
, addr
)) {
707 if (IN6_IS_ADDR_LINKLOCAL(
709 if (ifindex
== ifp
->ifindex
)
719 static int if_get_ipv6_global(struct interface
*ifp
, struct in6_addr
*addr
)
721 struct listnode
*cnode
;
722 struct connected
*connected
;
725 for (ALL_LIST_ELEMENTS_RO(ifp
->connected
, cnode
, connected
)) {
726 cp
= connected
->address
;
728 if (cp
->family
== AF_INET6
)
729 if (!IN6_IS_ADDR_LINKLOCAL(&cp
->u
.prefix6
)) {
730 memcpy(addr
, &cp
->u
.prefix6
, IPV6_MAX_BYTELEN
);
737 static int if_get_ipv6_local(struct interface
*ifp
, struct in6_addr
*addr
)
739 struct listnode
*cnode
;
740 struct connected
*connected
;
743 for (ALL_LIST_ELEMENTS_RO(ifp
->connected
, cnode
, connected
)) {
744 cp
= connected
->address
;
746 if (cp
->family
== AF_INET6
)
747 if (IN6_IS_ADDR_LINKLOCAL(&cp
->u
.prefix6
)) {
748 memcpy(addr
, &cp
->u
.prefix6
, IPV6_MAX_BYTELEN
);
755 static int if_get_ipv4_address(struct interface
*ifp
, struct in_addr
*addr
)
757 struct listnode
*cnode
;
758 struct connected
*connected
;
761 for (ALL_LIST_ELEMENTS_RO(ifp
->connected
, cnode
, connected
)) {
762 cp
= connected
->address
;
763 if ((cp
->family
== AF_INET
)
764 && !ipv4_martian(&(cp
->u
.prefix4
))) {
765 *addr
= cp
->u
.prefix4
;
773 bool bgp_zebra_nexthop_set(union sockunion
*local
, union sockunion
*remote
,
774 struct bgp_nexthop
*nexthop
, struct peer
*peer
)
777 struct interface
*ifp
= NULL
;
779 memset(nexthop
, 0, sizeof(struct bgp_nexthop
));
786 if (local
->sa
.sa_family
== AF_INET
) {
787 nexthop
->v4
= local
->sin
.sin_addr
;
789 ifp
= if_lookup_by_name(peer
->update_if
,
792 ifp
= if_lookup_by_ipv4_exact(&local
->sin
.sin_addr
,
795 if (local
->sa
.sa_family
== AF_INET6
) {
796 memcpy(&nexthop
->v6_global
, &local
->sin6
.sin6_addr
, IPV6_MAX_BYTELEN
);
797 if (IN6_IS_ADDR_LINKLOCAL(&local
->sin6
.sin6_addr
)) {
798 if (peer
->conf_if
|| peer
->ifname
)
799 ifp
= if_lookup_by_name(peer
->conf_if
803 } else if (peer
->update_if
)
804 ifp
= if_lookup_by_name(peer
->update_if
,
807 ifp
= if_lookup_by_ipv6_exact(&local
->sin6
.sin6_addr
,
808 local
->sin6
.sin6_scope_id
,
814 * BGP views do not currently get proper data
815 * from zebra( when attached ) to be able to
816 * properly resolve nexthops, so give this
817 * instance type a pass.
819 if (peer
->bgp
->inst_type
== BGP_INSTANCE_TYPE_VIEW
)
822 * If we have no interface data but we have established
823 * some connection w/ zebra than something has gone
824 * terribly terribly wrong here, so say this failed
825 * If we do not any zebra connection then not
826 * having a ifp pointer is ok.
828 return zclient_num_connects
? false : true;
833 /* IPv4 connection, fetch and store IPv6 local address(es) if any. */
834 if (local
->sa
.sa_family
== AF_INET
) {
836 ret
= if_get_ipv6_global(ifp
, &nexthop
->v6_global
);
839 /* There is no global nexthop. Use link-local address as
841 * global and link-local nexthop. In this scenario, the
843 * for interop is that the network admin would use a
845 * specify the global IPv6 nexthop.
847 if_get_ipv6_local(ifp
, &nexthop
->v6_global
);
848 memcpy(&nexthop
->v6_local
, &nexthop
->v6_global
,
851 if_get_ipv6_local(ifp
, &nexthop
->v6_local
);
853 if (if_lookup_by_ipv4(&remote
->sin
.sin_addr
, peer
->bgp
->vrf_id
))
854 peer
->shared_network
= 1;
856 peer
->shared_network
= 0;
859 /* IPv6 connection, fetch and store IPv4 local address if any. */
860 if (local
->sa
.sa_family
== AF_INET6
) {
861 struct interface
*direct
= NULL
;
864 ret
= if_get_ipv4_address(ifp
, &nexthop
->v4
);
865 if (!ret
&& peer
->local_id
.s_addr
)
866 nexthop
->v4
= peer
->local_id
;
869 if (!IN6_IS_ADDR_LINKLOCAL(&local
->sin6
.sin6_addr
)) {
870 memcpy(&nexthop
->v6_global
, &local
->sin6
.sin6_addr
,
873 /* If directory connected set link-local address. */
874 direct
= if_lookup_by_ipv6(&remote
->sin6
.sin6_addr
,
875 remote
->sin6
.sin6_scope_id
,
878 if_get_ipv6_local(ifp
, &nexthop
->v6_local
);
880 /* Link-local address. */
882 ret
= if_get_ipv6_global(ifp
, &nexthop
->v6_global
);
884 /* If there is no global address. Set link-local
886 global. I know this break RFC specification... */
887 /* In this scenario, the expectation for interop is that
889 * network admin would use a route-map to specify the
894 memcpy(&nexthop
->v6_global
,
895 &local
->sin6
.sin6_addr
,
897 /* Always set the link-local address */
898 memcpy(&nexthop
->v6_local
, &local
->sin6
.sin6_addr
,
902 if (IN6_IS_ADDR_LINKLOCAL(&local
->sin6
.sin6_addr
)
903 || if_lookup_by_ipv6(&remote
->sin6
.sin6_addr
,
904 remote
->sin6
.sin6_scope_id
,
906 peer
->shared_network
= 1;
908 peer
->shared_network
= 0;
911 /* KAME stack specific treatment. */
913 if (IN6_IS_ADDR_LINKLOCAL(&nexthop
->v6_global
)
914 && IN6_LINKLOCAL_IFINDEX(nexthop
->v6_global
)) {
915 SET_IN6_LINKLOCAL_IFINDEX(nexthop
->v6_global
, 0);
917 if (IN6_IS_ADDR_LINKLOCAL(&nexthop
->v6_local
)
918 && IN6_LINKLOCAL_IFINDEX(nexthop
->v6_local
)) {
919 SET_IN6_LINKLOCAL_IFINDEX(nexthop
->v6_local
, 0);
923 /* If we have identified the local interface, there is no error for now.
928 static struct in6_addr
*
929 bgp_path_info_to_ipv6_nexthop(struct bgp_path_info
*path
, ifindex_t
*ifindex
)
931 struct in6_addr
*nexthop
= NULL
;
933 /* Only global address nexthop exists. */
934 if (path
->attr
->mp_nexthop_len
== BGP_ATTR_NHLEN_IPV6_GLOBAL
935 || path
->attr
->mp_nexthop_len
== BGP_ATTR_NHLEN_VPNV6_GLOBAL
) {
936 nexthop
= &path
->attr
->mp_nexthop_global
;
937 if (IN6_IS_ADDR_LINKLOCAL(nexthop
))
938 *ifindex
= path
->attr
->nh_ifindex
;
941 /* If both global and link-local address present. */
942 if (path
->attr
->mp_nexthop_len
== BGP_ATTR_NHLEN_IPV6_GLOBAL_AND_LL
943 || path
->attr
->mp_nexthop_len
944 == BGP_ATTR_NHLEN_VPNV6_GLOBAL_AND_LL
) {
945 /* Check if route-map is set to prefer global over link-local */
946 if (path
->attr
->mp_nexthop_prefer_global
) {
947 nexthop
= &path
->attr
->mp_nexthop_global
;
948 if (IN6_IS_ADDR_LINKLOCAL(nexthop
))
949 *ifindex
= path
->attr
->nh_ifindex
;
951 /* Workaround for Cisco's nexthop bug. */
952 if (IN6_IS_ADDR_UNSPECIFIED(
953 &path
->attr
->mp_nexthop_global
)
954 && path
->peer
->su_remote
->sa
.sa_family
957 &path
->peer
->su_remote
->sin6
.sin6_addr
;
958 if (IN6_IS_ADDR_LINKLOCAL(nexthop
))
959 *ifindex
= path
->peer
->nexthop
.ifp
962 nexthop
= &path
->attr
->mp_nexthop_local
;
963 if (IN6_IS_ADDR_LINKLOCAL(nexthop
))
964 *ifindex
= path
->attr
->nh_lla_ifindex
;
972 static int bgp_table_map_apply(struct route_map
*map
, struct prefix
*p
,
973 struct bgp_path_info
*path
)
975 route_map_result_t ret
;
977 ret
= route_map_apply(map
, p
, RMAP_BGP
, path
);
978 bgp_attr_flush(path
->attr
);
980 if (ret
!= RMAP_DENYMATCH
)
983 if (bgp_debug_zebra(p
)) {
984 if (p
->family
== AF_INET
) {
985 char buf
[2][INET_ADDRSTRLEN
];
987 "Zebra rmap deny: IPv4 route %s/%d nexthop %s",
988 inet_ntop(AF_INET
, &p
->u
.prefix4
, buf
[0],
991 inet_ntop(AF_INET
, &path
->attr
->nexthop
, buf
[1],
994 if (p
->family
== AF_INET6
) {
995 char buf
[2][INET6_ADDRSTRLEN
];
997 struct in6_addr
*nexthop
;
999 nexthop
= bgp_path_info_to_ipv6_nexthop(path
, &ifindex
);
1001 "Zebra rmap deny: IPv6 route %s/%d nexthop %s",
1002 inet_ntop(AF_INET6
, &p
->u
.prefix6
, buf
[0],
1005 inet_ntop(AF_INET6
, nexthop
,
1006 buf
[1], sizeof(buf
[1])));
1012 static struct thread
*bgp_tm_thread_connect
;
1013 static bool bgp_tm_status_connected
;
1014 static bool bgp_tm_chunk_obtained
;
1015 #define BGP_FLOWSPEC_TABLE_CHUNK 100000
1016 static uint32_t bgp_tm_min
, bgp_tm_max
, bgp_tm_chunk_size
;
1017 struct bgp
*bgp_tm_bgp
;
1019 static int bgp_zebra_tm_connect(struct thread
*t
)
1021 struct zclient
*zclient
;
1022 int delay
= 10, ret
= 0;
1024 zclient
= THREAD_ARG(t
);
1025 if (bgp_tm_status_connected
&& zclient
->sock
> 0)
1028 bgp_tm_status_connected
= false;
1029 ret
= tm_table_manager_connect(zclient
);
1032 zlog_info("Error connecting to table manager!");
1033 bgp_tm_status_connected
= false;
1035 if (!bgp_tm_status_connected
)
1036 zlog_debug("Connecting to table manager. Success");
1037 bgp_tm_status_connected
= true;
1038 if (!bgp_tm_chunk_obtained
) {
1039 if (bgp_zebra_get_table_range(bgp_tm_chunk_size
,
1041 &bgp_tm_max
) >= 0) {
1042 bgp_tm_chunk_obtained
= true;
1043 /* parse non installed entries */
1044 bgp_zebra_announce_table(bgp_tm_bgp
, AFI_IP
, SAFI_FLOWSPEC
);
1048 thread_add_timer(bm
->master
, bgp_zebra_tm_connect
, zclient
, delay
,
1049 &bgp_tm_thread_connect
);
1053 bool bgp_zebra_tm_chunk_obtained(void)
1055 return bgp_tm_chunk_obtained
;
1058 uint32_t bgp_zebra_tm_get_id(void)
1060 static int table_id
;
1062 if (!bgp_tm_chunk_obtained
)
1064 return bgp_tm_min
++;
1067 void bgp_zebra_init_tm_connect(struct bgp
*bgp
)
1071 /* if already set, do nothing
1073 if (bgp_tm_thread_connect
!= NULL
)
1075 bgp_tm_status_connected
= false;
1076 bgp_tm_chunk_obtained
= false;
1077 bgp_tm_min
= bgp_tm_max
= 0;
1078 bgp_tm_chunk_size
= BGP_FLOWSPEC_TABLE_CHUNK
;
1080 thread_add_timer(bm
->master
, bgp_zebra_tm_connect
, zclient
, delay
,
1081 &bgp_tm_thread_connect
);
1084 int bgp_zebra_get_table_range(uint32_t chunk_size
,
1085 uint32_t *start
, uint32_t *end
)
1089 if (!bgp_tm_status_connected
)
1091 ret
= tm_get_table_chunk(zclient
, chunk_size
, start
, end
);
1093 flog_err(EC_BGP_TABLE_CHUNK
,
1094 "BGP: Error getting table chunk %u", chunk_size
);
1097 zlog_info("BGP: Table Manager returns range from chunk %u is [%u %u]",
1098 chunk_size
, *start
, *end
);
1102 static int update_ipv4nh_for_route_install(int nh_othervrf
,
1104 struct in_addr
*nexthop
,
1107 struct zapi_nexthop
*api_nh
)
1109 api_nh
->gate
.ipv4
= *nexthop
;
1110 api_nh
->vrf_id
= nh_bgp
->vrf_id
;
1112 /* Need to set fields appropriately for EVPN routes imported into
1113 * a VRF (which are programmed as onlink on l3-vni SVI) as well as
1114 * connected routes leaked into a VRF.
1117 api_nh
->type
= NEXTHOP_TYPE_IPV4_IFINDEX
;
1118 api_nh
->onlink
= true;
1119 api_nh
->ifindex
= nh_bgp
->l3vni_svi_ifindex
;
1120 } else if (nh_othervrf
&&
1121 api_nh
->gate
.ipv4
.s_addr
== INADDR_ANY
) {
1122 api_nh
->type
= NEXTHOP_TYPE_IFINDEX
;
1123 api_nh
->ifindex
= attr
->nh_ifindex
;
1125 api_nh
->type
= NEXTHOP_TYPE_IPV4
;
1131 update_ipv6nh_for_route_install(int nh_othervrf
, struct bgp
*nh_bgp
,
1132 struct in6_addr
*nexthop
,
1133 ifindex_t ifindex
, struct bgp_path_info
*pi
,
1134 struct bgp_path_info
*best_pi
, bool is_evpn
,
1135 struct zapi_nexthop
*api_nh
)
1140 api_nh
->vrf_id
= nh_bgp
->vrf_id
;
1143 api_nh
->type
= NEXTHOP_TYPE_IPV6_IFINDEX
;
1144 api_nh
->onlink
= true;
1145 api_nh
->ifindex
= nh_bgp
->l3vni_svi_ifindex
;
1146 } else if (nh_othervrf
) {
1147 if (IN6_IS_ADDR_UNSPECIFIED(nexthop
)) {
1148 api_nh
->type
= NEXTHOP_TYPE_IFINDEX
;
1149 api_nh
->ifindex
= attr
->nh_ifindex
;
1150 } else if (IN6_IS_ADDR_LINKLOCAL(nexthop
)) {
1153 api_nh
->type
= NEXTHOP_TYPE_IPV6_IFINDEX
;
1154 api_nh
->ifindex
= ifindex
;
1156 api_nh
->type
= NEXTHOP_TYPE_IPV6
;
1157 api_nh
->ifindex
= 0;
1160 if (IN6_IS_ADDR_LINKLOCAL(nexthop
)) {
1162 && attr
->mp_nexthop_len
1163 == BGP_ATTR_NHLEN_IPV6_GLOBAL_AND_LL
)
1164 if (pi
->peer
->nexthop
.ifp
)
1166 pi
->peer
->nexthop
.ifp
->ifindex
;
1168 if (pi
->peer
->conf_if
)
1169 ifindex
= pi
->peer
->ifp
->ifindex
;
1170 else if (pi
->peer
->ifname
)
1171 ifindex
= ifname2ifindex(
1173 pi
->peer
->bgp
->vrf_id
);
1174 else if (pi
->peer
->nexthop
.ifp
)
1176 pi
->peer
->nexthop
.ifp
->ifindex
;
1181 api_nh
->type
= NEXTHOP_TYPE_IPV6_IFINDEX
;
1182 api_nh
->ifindex
= ifindex
;
1184 api_nh
->type
= NEXTHOP_TYPE_IPV6
;
1185 api_nh
->ifindex
= 0;
1188 api_nh
->gate
.ipv6
= *nexthop
;
1193 void bgp_zebra_announce(struct bgp_node
*rn
, struct prefix
*p
,
1194 struct bgp_path_info
*info
, struct bgp
*bgp
, afi_t afi
,
1197 struct zapi_route api
;
1198 struct zapi_nexthop
*api_nh
;
1200 unsigned int valid_nh_count
= 0;
1201 int has_valid_label
= 0;
1204 struct bgp_path_info
*mpinfo
;
1206 struct attr local_attr
;
1207 struct bgp_path_info local_info
;
1208 struct bgp_path_info
*mpinfo_cp
= &local_info
;
1211 int nh_othervrf
= 0;
1212 char buf_prefix
[PREFIX_STRLEN
]; /* filled in if we are debugging */
1216 /* Don't try to install if we're not connected to Zebra or Zebra doesn't
1217 * know of this instance.
1219 if (!bgp_install_info_to_zebra(bgp
))
1222 if (bgp
->main_zebra_update_hold
)
1225 if (bgp_debug_zebra(p
))
1226 prefix2str(p
, buf_prefix
, sizeof(buf_prefix
));
1228 if (safi
== SAFI_FLOWSPEC
) {
1229 bgp_pbr_update_entry(bgp
, &rn
->p
, info
, afi
, safi
, true);
1234 * vrf leaking support (will have only one nexthop)
1236 if (info
->extra
&& info
->extra
->bgp_orig
)
1239 /* Make Zebra API structure. */
1240 memset(&api
, 0, sizeof(api
));
1241 api
.vrf_id
= bgp
->vrf_id
;
1242 api
.type
= ZEBRA_ROUTE_BGP
;
1245 SET_FLAG(api
.message
, ZAPI_MESSAGE_NEXTHOP
);
1249 if (info
->type
== ZEBRA_ROUTE_BGP
1250 && info
->sub_type
== BGP_ROUTE_IMPORTED
) {
1252 /* Obtain peer from parent */
1253 if (info
->extra
&& info
->extra
->parent
)
1254 peer
= ((struct bgp_path_info
*)(info
->extra
->parent
))
1258 tag
= info
->attr
->tag
;
1260 /* If the route's source is EVPN, flag as such. */
1261 is_evpn
= is_route_parent_evpn(info
);
1263 SET_FLAG(api
.flags
, ZEBRA_FLAG_EVPN_ROUTE
);
1265 if (peer
->sort
== BGP_PEER_IBGP
|| peer
->sort
== BGP_PEER_CONFED
1266 || info
->sub_type
== BGP_ROUTE_AGGREGATE
) {
1267 SET_FLAG(api
.flags
, ZEBRA_FLAG_IBGP
);
1268 SET_FLAG(api
.flags
, ZEBRA_FLAG_ALLOW_RECURSION
);
1271 if ((peer
->sort
== BGP_PEER_EBGP
&& peer
->ttl
!= 1)
1272 || CHECK_FLAG(peer
->flags
, PEER_FLAG_DISABLE_CONNECTED_CHECK
)
1273 || bgp_flag_check(bgp
, BGP_FLAG_DISABLE_NH_CONNECTED_CHK
))
1275 SET_FLAG(api
.flags
, ZEBRA_FLAG_ALLOW_RECURSION
);
1277 /* Metric is currently based on the best-path only */
1278 metric
= info
->attr
->med
;
1279 for (mpinfo
= info
; mpinfo
; mpinfo
= bgp_path_info_mpath_next(mpinfo
)) {
1280 if (valid_nh_count
>= multipath_num
)
1283 *mpinfo_cp
= *mpinfo
;
1285 /* Get nexthop address-family */
1286 if (p
->family
== AF_INET
1287 && !BGP_ATTR_NEXTHOP_AFI_IP6(mpinfo_cp
->attr
))
1288 nh_family
= AF_INET
;
1289 else if (p
->family
== AF_INET6
1290 || (p
->family
== AF_INET
1291 && BGP_ATTR_NEXTHOP_AFI_IP6(mpinfo_cp
->attr
)))
1292 nh_family
= AF_INET6
;
1296 api_nh
= &api
.nexthops
[valid_nh_count
];
1297 if (nh_family
== AF_INET
) {
1298 if (bgp_debug_zebra(&api
.prefix
)) {
1299 if (mpinfo
->extra
) {
1301 "%s: p=%s, bgp_is_valid_label: %d",
1302 __func__
, buf_prefix
,
1308 "%s: p=%s, extra is NULL, no label",
1309 __func__
, buf_prefix
);
1313 if (bgp
->table_map
[afi
][safi
].name
) {
1314 /* Copy info and attributes, so the route-map
1315 apply doesn't modify the BGP route info. */
1316 local_attr
= *mpinfo
->attr
;
1317 mpinfo_cp
->attr
= &local_attr
;
1320 if (bgp
->table_map
[afi
][safi
].name
) {
1321 if (!bgp_table_map_apply(
1322 bgp
->table_map
[afi
][safi
].map
, p
,
1326 /* metric/tag is only allowed to be
1327 * overridden on 1st nexthop */
1328 if (mpinfo
== info
) {
1329 metric
= mpinfo_cp
->attr
->med
;
1330 tag
= mpinfo_cp
->attr
->tag
;
1334 nh_updated
= update_ipv4nh_for_route_install(
1337 info
->extra
->bgp_orig
: bgp
,
1338 &mpinfo_cp
->attr
->nexthop
,
1339 mpinfo_cp
->attr
, is_evpn
, api_nh
);
1341 ifindex_t ifindex
= IFINDEX_INTERNAL
;
1342 struct in6_addr
*nexthop
;
1344 if (bgp
->table_map
[afi
][safi
].name
) {
1345 /* Copy info and attributes, so the route-map
1346 apply doesn't modify the BGP route info. */
1347 local_attr
= *mpinfo
->attr
;
1348 mpinfo_cp
->attr
= &local_attr
;
1351 if (bgp
->table_map
[afi
][safi
].name
) {
1352 /* Copy info and attributes, so the route-map
1353 apply doesn't modify the BGP route info. */
1354 local_attr
= *mpinfo
->attr
;
1355 mpinfo_cp
->attr
= &local_attr
;
1357 if (!bgp_table_map_apply(
1358 bgp
->table_map
[afi
][safi
].map
, p
,
1362 /* metric/tag is only allowed to be
1363 * overridden on 1st nexthop */
1364 if (mpinfo
== info
) {
1365 metric
= mpinfo_cp
->attr
->med
;
1366 tag
= mpinfo_cp
->attr
->tag
;
1369 nexthop
= bgp_path_info_to_ipv6_nexthop(mpinfo_cp
,
1371 nh_updated
= update_ipv6nh_for_route_install(
1372 nh_othervrf
, nh_othervrf
?
1373 info
->extra
->bgp_orig
: bgp
,
1375 mpinfo
, info
, is_evpn
, api_nh
);
1378 /* Did we get proper nexthop info to update zebra? */
1383 && bgp_is_valid_label(&mpinfo
->extra
->label
[0])
1384 && !CHECK_FLAG(api
.flags
, ZEBRA_FLAG_EVPN_ROUTE
)) {
1385 has_valid_label
= 1;
1386 label
= label_pton(&mpinfo
->extra
->label
[0]);
1388 api_nh
->label_num
= 1;
1389 api_nh
->labels
[0] = label
;
1391 memcpy(&api_nh
->rmac
, &(mpinfo
->attr
->rmac
),
1392 sizeof(struct ethaddr
));
1397 /* if this is a evpn route we don't have to include the label */
1398 if (has_valid_label
&& !(CHECK_FLAG(api
.flags
, ZEBRA_FLAG_EVPN_ROUTE
)))
1399 SET_FLAG(api
.message
, ZAPI_MESSAGE_LABEL
);
1402 * When we create an aggregate route we must also
1403 * install a Null0 route in the RIB, so overwrite
1404 * what was written into api with a blackhole route
1406 if (info
->sub_type
== BGP_ROUTE_AGGREGATE
)
1407 zapi_route_set_blackhole(&api
, BLACKHOLE_NULL
);
1409 api
.nexthop_num
= valid_nh_count
;
1411 SET_FLAG(api
.message
, ZAPI_MESSAGE_METRIC
);
1412 api
.metric
= metric
;
1415 SET_FLAG(api
.message
, ZAPI_MESSAGE_TAG
);
1419 distance
= bgp_distance_apply(p
, info
, afi
, safi
, bgp
);
1421 SET_FLAG(api
.message
, ZAPI_MESSAGE_DISTANCE
);
1422 api
.distance
= distance
;
1425 if (bgp_debug_zebra(p
)) {
1426 char prefix_buf
[PREFIX_STRLEN
];
1427 char nh_buf
[INET6_ADDRSTRLEN
];
1431 prefix2str(&api
.prefix
, prefix_buf
, sizeof(prefix_buf
));
1432 zlog_debug("Tx route %s VRF %u %s metric %u tag %" ROUTE_TAG_PRI
1434 valid_nh_count
? "add" : "delete", bgp
->vrf_id
,
1435 prefix_buf
, api
.metric
, api
.tag
, api
.nexthop_num
);
1436 for (i
= 0; i
< api
.nexthop_num
; i
++) {
1437 api_nh
= &api
.nexthops
[i
];
1439 switch (api_nh
->type
) {
1440 case NEXTHOP_TYPE_IFINDEX
:
1443 case NEXTHOP_TYPE_IPV4
:
1444 case NEXTHOP_TYPE_IPV4_IFINDEX
:
1445 nh_family
= AF_INET
;
1446 inet_ntop(nh_family
, &api_nh
->gate
, nh_buf
,
1449 case NEXTHOP_TYPE_IPV6
:
1450 case NEXTHOP_TYPE_IPV6_IFINDEX
:
1451 nh_family
= AF_INET6
;
1452 inet_ntop(nh_family
, &api_nh
->gate
, nh_buf
,
1455 case NEXTHOP_TYPE_BLACKHOLE
:
1456 strlcpy(nh_buf
, "blackhole", sizeof(nh_buf
));
1459 /* Note: add new nexthop case */
1464 label_buf
[0] = '\0';
1466 && !CHECK_FLAG(api
.flags
, ZEBRA_FLAG_EVPN_ROUTE
))
1467 sprintf(label_buf
, "label %u",
1469 zlog_debug(" nhop [%d]: %s if %u VRF %u %s",
1470 i
+ 1, nh_buf
, api_nh
->ifindex
,
1471 api_nh
->vrf_id
, label_buf
);
1475 if (bgp_debug_zebra(p
)) {
1476 int recursion_flag
= 0;
1478 if (CHECK_FLAG(api
.flags
, ZEBRA_FLAG_ALLOW_RECURSION
))
1481 zlog_debug("%s: %s: announcing to zebra (recursion %sset)",
1482 __func__
, buf_prefix
,
1483 (recursion_flag
? "" : "NOT "));
1485 zclient_route_send(valid_nh_count
? ZEBRA_ROUTE_ADD
1486 : ZEBRA_ROUTE_DELETE
,
1490 /* Announce all routes of a table to zebra */
1491 void bgp_zebra_announce_table(struct bgp
*bgp
, afi_t afi
, safi_t safi
)
1493 struct bgp_node
*rn
;
1494 struct bgp_table
*table
;
1495 struct bgp_path_info
*pi
;
1497 /* Don't try to install if we're not connected to Zebra or Zebra doesn't
1498 * know of this instance.
1500 if (!bgp_install_info_to_zebra(bgp
))
1503 table
= bgp
->rib
[afi
][safi
];
1507 for (rn
= bgp_table_top(table
); rn
; rn
= bgp_route_next(rn
))
1508 for (pi
= bgp_node_get_bgp_path_info(rn
); pi
; pi
= pi
->next
)
1509 if (CHECK_FLAG(pi
->flags
, BGP_PATH_SELECTED
) &&
1511 (pi
->type
== ZEBRA_ROUTE_BGP
1512 && (pi
->sub_type
== BGP_ROUTE_NORMAL
1513 || pi
->sub_type
== BGP_ROUTE_IMPORTED
)))
1515 bgp_zebra_announce(rn
, &rn
->p
, pi
, bgp
, afi
,
1519 void bgp_zebra_withdraw(struct prefix
*p
, struct bgp_path_info
*info
,
1520 struct bgp
*bgp
, safi_t safi
)
1522 struct zapi_route api
;
1525 /* Don't try to install if we're not connected to Zebra or Zebra doesn't
1526 * know of this instance.
1528 if (!bgp_install_info_to_zebra(bgp
))
1531 if (safi
== SAFI_FLOWSPEC
) {
1533 bgp_pbr_update_entry(peer
->bgp
, p
, info
, AFI_IP
, safi
, false);
1537 memset(&api
, 0, sizeof(api
));
1538 api
.vrf_id
= bgp
->vrf_id
;
1539 api
.type
= ZEBRA_ROUTE_BGP
;
1543 /* If the route's source is EVPN, flag as such. */
1544 if (is_route_parent_evpn(info
))
1545 SET_FLAG(api
.flags
, ZEBRA_FLAG_EVPN_ROUTE
);
1547 if (bgp_debug_zebra(p
)) {
1548 char buf
[PREFIX_STRLEN
];
1550 prefix2str(&api
.prefix
, buf
, sizeof(buf
));
1551 zlog_debug("Tx route delete VRF %u %s", bgp
->vrf_id
, buf
);
1554 zclient_route_send(ZEBRA_ROUTE_DELETE
, zclient
, &api
);
1557 struct bgp_redist
*bgp_redist_lookup(struct bgp
*bgp
, afi_t afi
, uint8_t type
,
1558 unsigned short instance
)
1560 struct list
*red_list
;
1561 struct listnode
*node
;
1562 struct bgp_redist
*red
;
1564 red_list
= bgp
->redist
[afi
][type
];
1568 for (ALL_LIST_ELEMENTS_RO(red_list
, node
, red
))
1569 if (red
->instance
== instance
)
1575 struct bgp_redist
*bgp_redist_add(struct bgp
*bgp
, afi_t afi
, uint8_t type
,
1576 unsigned short instance
)
1578 struct list
*red_list
;
1579 struct bgp_redist
*red
;
1581 red
= bgp_redist_lookup(bgp
, afi
, type
, instance
);
1585 if (!bgp
->redist
[afi
][type
])
1586 bgp
->redist
[afi
][type
] = list_new();
1588 red_list
= bgp
->redist
[afi
][type
];
1589 red
= XCALLOC(MTYPE_BGP_REDIST
, sizeof(struct bgp_redist
));
1590 red
->instance
= instance
;
1592 listnode_add(red_list
, red
);
1597 static void bgp_redist_del(struct bgp
*bgp
, afi_t afi
, uint8_t type
,
1598 unsigned short instance
)
1600 struct bgp_redist
*red
;
1602 red
= bgp_redist_lookup(bgp
, afi
, type
, instance
);
1605 listnode_delete(bgp
->redist
[afi
][type
], red
);
1606 XFREE(MTYPE_BGP_REDIST
, red
);
1607 if (!bgp
->redist
[afi
][type
]->count
)
1608 list_delete(&bgp
->redist
[afi
][type
]);
1612 /* Other routes redistribution into BGP. */
1613 int bgp_redistribute_set(struct bgp
*bgp
, afi_t afi
, int type
,
1614 unsigned short instance
, bool changed
)
1616 /* If redistribute options are changed call
1617 * bgp_redistribute_unreg() to reset the option and withdraw
1621 bgp_redistribute_unreg(bgp
, afi
, type
, instance
);
1623 /* Return if already redistribute flag is set. */
1625 if (redist_check_instance(&zclient
->mi_redist
[afi
][type
],
1629 redist_add_instance(&zclient
->mi_redist
[afi
][type
], instance
);
1631 if (vrf_bitmap_check(zclient
->redist
[afi
][type
], bgp
->vrf_id
))
1635 if (EVPN_ENABLED(bgp
) && type
== ZEBRA_ROUTE_VNC_DIRECT
) {
1636 vnc_export_bgp_enable(
1637 bgp
, afi
); /* only enables if mode bits cfg'd */
1641 vrf_bitmap_set(zclient
->redist
[afi
][type
], bgp
->vrf_id
);
1645 * Don't try to register if we're not connected to Zebra or Zebra
1646 * doesn't know of this instance.
1648 * When we come up later well resend if needed.
1650 if (!bgp_install_info_to_zebra(bgp
))
1653 if (BGP_DEBUG(zebra
, ZEBRA
))
1654 zlog_debug("Tx redistribute add VRF %u afi %d %s %d",
1655 bgp
->vrf_id
, afi
, zebra_route_string(type
),
1658 /* Send distribute add message to zebra. */
1659 zebra_redistribute_send(ZEBRA_REDISTRIBUTE_ADD
, zclient
, afi
, type
,
1660 instance
, bgp
->vrf_id
);
1665 int bgp_redistribute_resend(struct bgp
*bgp
, afi_t afi
, int type
,
1666 unsigned short instance
)
1668 /* Don't try to send if we're not connected to Zebra or Zebra doesn't
1669 * know of this instance.
1671 if (!bgp_install_info_to_zebra(bgp
))
1674 if (BGP_DEBUG(zebra
, ZEBRA
))
1675 zlog_debug("Tx redistribute del/add VRF %u afi %d %s %d",
1676 bgp
->vrf_id
, afi
, zebra_route_string(type
),
1679 /* Send distribute add message to zebra. */
1680 zebra_redistribute_send(ZEBRA_REDISTRIBUTE_DELETE
, zclient
, afi
, type
,
1681 instance
, bgp
->vrf_id
);
1682 zebra_redistribute_send(ZEBRA_REDISTRIBUTE_ADD
, zclient
, afi
, type
,
1683 instance
, bgp
->vrf_id
);
1688 /* Redistribute with route-map specification. */
1689 int bgp_redistribute_rmap_set(struct bgp_redist
*red
, const char *name
,
1690 struct route_map
*route_map
)
1692 if (red
->rmap
.name
&& (strcmp(red
->rmap
.name
, name
) == 0))
1695 XFREE(MTYPE_ROUTE_MAP_NAME
, red
->rmap
.name
);
1696 /* Decrement the count for existing routemap and
1697 * increment the count for new route map.
1699 route_map_counter_decrement(red
->rmap
.map
);
1700 red
->rmap
.name
= XSTRDUP(MTYPE_ROUTE_MAP_NAME
, name
);
1701 red
->rmap
.map
= route_map
;
1702 route_map_counter_increment(red
->rmap
.map
);
1707 /* Redistribute with metric specification. */
1708 int bgp_redistribute_metric_set(struct bgp
*bgp
, struct bgp_redist
*red
,
1709 afi_t afi
, int type
, uint32_t metric
)
1711 struct bgp_node
*rn
;
1712 struct bgp_path_info
*pi
;
1714 if (red
->redist_metric_flag
&& red
->redist_metric
== metric
)
1717 red
->redist_metric_flag
= 1;
1718 red
->redist_metric
= metric
;
1720 for (rn
= bgp_table_top(bgp
->rib
[afi
][SAFI_UNICAST
]); rn
;
1721 rn
= bgp_route_next(rn
)) {
1722 for (pi
= bgp_node_get_bgp_path_info(rn
); pi
; pi
= pi
->next
) {
1723 if (pi
->sub_type
== BGP_ROUTE_REDISTRIBUTE
1725 && pi
->instance
== red
->instance
) {
1726 struct attr
*old_attr
;
1727 struct attr new_attr
;
1729 bgp_attr_dup(&new_attr
, pi
->attr
);
1730 new_attr
.med
= red
->redist_metric
;
1731 old_attr
= pi
->attr
;
1732 pi
->attr
= bgp_attr_intern(&new_attr
);
1733 bgp_attr_unintern(&old_attr
);
1735 bgp_path_info_set_flag(rn
, pi
,
1736 BGP_PATH_ATTR_CHANGED
);
1737 bgp_process(bgp
, rn
, afi
, SAFI_UNICAST
);
1745 /* Unset redistribution. */
1746 int bgp_redistribute_unreg(struct bgp
*bgp
, afi_t afi
, int type
,
1747 unsigned short instance
)
1749 struct bgp_redist
*red
;
1751 red
= bgp_redist_lookup(bgp
, afi
, type
, instance
);
1755 /* Return if zebra connection is disabled. */
1757 if (!redist_check_instance(&zclient
->mi_redist
[afi
][type
],
1760 redist_del_instance(&zclient
->mi_redist
[afi
][type
], instance
);
1762 if (!vrf_bitmap_check(zclient
->redist
[afi
][type
], bgp
->vrf_id
))
1764 vrf_bitmap_unset(zclient
->redist
[afi
][type
], bgp
->vrf_id
);
1768 if (bgp_install_info_to_zebra(bgp
)) {
1769 /* Send distribute delete message to zebra. */
1770 if (BGP_DEBUG(zebra
, ZEBRA
))
1771 zlog_debug("Tx redistribute del VRF %u afi %d %s %d",
1772 bgp
->vrf_id
, afi
, zebra_route_string(type
),
1774 zebra_redistribute_send(ZEBRA_REDISTRIBUTE_DELETE
, zclient
, afi
,
1775 type
, instance
, bgp
->vrf_id
);
1778 /* Withdraw redistributed routes from current BGP's routing table. */
1779 bgp_redistribute_withdraw(bgp
, afi
, type
, instance
);
1784 /* Unset redistribution. */
1785 int bgp_redistribute_unset(struct bgp
*bgp
, afi_t afi
, int type
,
1786 unsigned short instance
)
1788 struct bgp_redist
*red
;
1791 * vnc and vpn->vrf checks must be before red check because
1792 * they operate within bgpd irrespective of zebra connection
1793 * status. red lookup fails if there is no zebra connection.
1796 if (EVPN_ENABLED(bgp
) && type
== ZEBRA_ROUTE_VNC_DIRECT
) {
1797 vnc_export_bgp_disable(bgp
, afi
);
1801 red
= bgp_redist_lookup(bgp
, afi
, type
, instance
);
1805 bgp_redistribute_unreg(bgp
, afi
, type
, instance
);
1807 /* Unset route-map. */
1808 XFREE(MTYPE_ROUTE_MAP_NAME
, red
->rmap
.name
);
1809 route_map_counter_decrement(red
->rmap
.map
);
1810 red
->rmap
.name
= NULL
;
1811 red
->rmap
.map
= NULL
;
1814 red
->redist_metric_flag
= 0;
1815 red
->redist_metric
= 0;
1817 bgp_redist_del(bgp
, afi
, type
, instance
);
1822 void bgp_redistribute_redo(struct bgp
*bgp
)
1826 struct list
*red_list
;
1827 struct listnode
*node
;
1828 struct bgp_redist
*red
;
1830 for (afi
= AFI_IP
; afi
< AFI_MAX
; afi
++) {
1831 for (i
= 0; i
< ZEBRA_ROUTE_MAX
; i
++) {
1833 red_list
= bgp
->redist
[afi
][i
];
1837 for (ALL_LIST_ELEMENTS_RO(red_list
, node
, red
)) {
1838 bgp_redistribute_resend(bgp
, afi
, i
,
1845 /* Unset redistribute vrf bitmap during triggers like
1846 restart networking or delete VRFs */
1847 void bgp_unset_redist_vrf_bitmaps(struct bgp
*bgp
, vrf_id_t old_vrf_id
)
1852 for (afi
= AFI_IP
; afi
< AFI_MAX
; afi
++)
1853 for (i
= 0; i
< ZEBRA_ROUTE_MAX
; i
++)
1854 if (vrf_bitmap_check(zclient
->redist
[afi
][i
],
1856 vrf_bitmap_unset(zclient
->redist
[afi
][i
],
1861 void bgp_zclient_reset(void)
1863 zclient_reset(zclient
);
1866 /* Register this instance with Zebra. Invoked upon connect (for
1867 * default instance) and when other VRFs are learnt (or created and
1870 void bgp_zebra_instance_register(struct bgp
*bgp
)
1872 /* Don't try to register if we're not connected to Zebra */
1873 if (!zclient
|| zclient
->sock
< 0)
1876 if (BGP_DEBUG(zebra
, ZEBRA
))
1877 zlog_debug("Registering VRF %u", bgp
->vrf_id
);
1879 /* Register for router-id, interfaces, redistributed routes. */
1880 zclient_send_reg_requests(zclient
, bgp
->vrf_id
);
1882 /* For EVPN instance, register to learn about VNIs, if appropriate. */
1883 if (bgp
->advertise_all_vni
)
1884 bgp_zebra_advertise_all_vni(bgp
, 1);
1886 bgp_nht_register_nexthops(bgp
);
1889 /* Deregister this instance with Zebra. Invoked upon the instance
1890 * being deleted (default or VRF) and it is already registered.
1892 void bgp_zebra_instance_deregister(struct bgp
*bgp
)
1894 /* Don't try to deregister if we're not connected to Zebra */
1895 if (zclient
->sock
< 0)
1898 if (BGP_DEBUG(zebra
, ZEBRA
))
1899 zlog_debug("Deregistering VRF %u", bgp
->vrf_id
);
1901 /* For EVPN instance, unregister learning about VNIs, if appropriate. */
1902 if (bgp
->advertise_all_vni
)
1903 bgp_zebra_advertise_all_vni(bgp
, 0);
1905 /* Deregister for router-id, interfaces, redistributed routes. */
1906 zclient_send_dereg_requests(zclient
, bgp
->vrf_id
);
1909 void bgp_zebra_initiate_radv(struct bgp
*bgp
, struct peer
*peer
)
1911 int ra_interval
= BGP_UNNUM_DEFAULT_RA_INTERVAL
;
1913 /* Don't try to initiate if we're not connected to Zebra */
1914 if (zclient
->sock
< 0)
1917 if (BGP_DEBUG(zebra
, ZEBRA
))
1918 zlog_debug("%u: Initiating RA for peer %s", bgp
->vrf_id
,
1921 zclient_send_interface_radv_req(zclient
, bgp
->vrf_id
, peer
->ifp
, 1,
1925 void bgp_zebra_terminate_radv(struct bgp
*bgp
, struct peer
*peer
)
1927 /* Don't try to terminate if we're not connected to Zebra */
1928 if (zclient
->sock
< 0)
1931 if (BGP_DEBUG(zebra
, ZEBRA
))
1932 zlog_debug("%u: Terminating RA for peer %s", bgp
->vrf_id
,
1935 zclient_send_interface_radv_req(zclient
, bgp
->vrf_id
, peer
->ifp
, 0, 0);
1938 int bgp_zebra_advertise_subnet(struct bgp
*bgp
, int advertise
, vni_t vni
)
1940 struct stream
*s
= NULL
;
1943 if (!zclient
|| zclient
->sock
< 0)
1946 /* Don't try to register if Zebra doesn't know of this instance. */
1947 if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp
)) {
1948 if (BGP_DEBUG(zebra
, ZEBRA
))
1949 zlog_debug("%s: No zebra instance to talk to, cannot advertise subnet",
1950 __PRETTY_FUNCTION__
);
1957 zclient_create_header(s
, ZEBRA_ADVERTISE_SUBNET
, bgp
->vrf_id
);
1958 stream_putc(s
, advertise
);
1959 stream_put3(s
, vni
);
1960 stream_putw_at(s
, 0, stream_get_endp(s
));
1962 return zclient_send_message(zclient
);
1965 int bgp_zebra_advertise_svi_macip(struct bgp
*bgp
, int advertise
, vni_t vni
)
1967 struct stream
*s
= NULL
;
1970 if (!zclient
|| zclient
->sock
< 0)
1973 /* Don't try to register if Zebra doesn't know of this instance. */
1974 if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp
))
1980 zclient_create_header(s
, ZEBRA_ADVERTISE_SVI_MACIP
, bgp
->vrf_id
);
1981 stream_putc(s
, advertise
);
1982 stream_putl(s
, vni
);
1983 stream_putw_at(s
, 0, stream_get_endp(s
));
1985 return zclient_send_message(zclient
);
1988 int bgp_zebra_advertise_gw_macip(struct bgp
*bgp
, int advertise
, vni_t vni
)
1990 struct stream
*s
= NULL
;
1993 if (!zclient
|| zclient
->sock
< 0)
1996 /* Don't try to register if Zebra doesn't know of this instance. */
1997 if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp
)) {
1998 if (BGP_DEBUG(zebra
, ZEBRA
))
1999 zlog_debug("%s: No zebra instance to talk to, not installing gw_macip",
2000 __PRETTY_FUNCTION__
);
2007 zclient_create_header(s
, ZEBRA_ADVERTISE_DEFAULT_GW
, bgp
->vrf_id
);
2008 stream_putc(s
, advertise
);
2009 stream_putl(s
, vni
);
2010 stream_putw_at(s
, 0, stream_get_endp(s
));
2012 return zclient_send_message(zclient
);
2015 int bgp_zebra_vxlan_flood_control(struct bgp
*bgp
,
2016 enum vxlan_flood_control flood_ctrl
)
2021 if (!zclient
|| zclient
->sock
< 0)
2024 /* Don't try to register if Zebra doesn't know of this instance. */
2025 if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp
)) {
2026 if (BGP_DEBUG(zebra
, ZEBRA
))
2027 zlog_debug("%s: No zebra instance to talk to, not installing all vni",
2028 __PRETTY_FUNCTION__
);
2035 zclient_create_header(s
, ZEBRA_VXLAN_FLOOD_CONTROL
, bgp
->vrf_id
);
2036 stream_putc(s
, flood_ctrl
);
2037 stream_putw_at(s
, 0, stream_get_endp(s
));
2039 return zclient_send_message(zclient
);
2042 int bgp_zebra_advertise_all_vni(struct bgp
*bgp
, int advertise
)
2047 if (!zclient
|| zclient
->sock
< 0)
2050 /* Don't try to register if Zebra doesn't know of this instance. */
2051 if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp
))
2057 zclient_create_header(s
, ZEBRA_ADVERTISE_ALL_VNI
, bgp
->vrf_id
);
2058 stream_putc(s
, advertise
);
2059 /* Also inform current BUM handling setting. This is really
2060 * relevant only when 'advertise' is set.
2062 stream_putc(s
, bgp
->vxlan_flood_ctrl
);
2063 stream_putw_at(s
, 0, stream_get_endp(s
));
2065 return zclient_send_message(zclient
);
2068 int bgp_zebra_dup_addr_detection(struct bgp
*bgp
)
2073 if (!zclient
|| zclient
->sock
< 0)
2076 /* Don't try to register if Zebra doesn't know of this instance. */
2077 if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp
))
2080 if (BGP_DEBUG(zebra
, ZEBRA
))
2081 zlog_debug("dup addr detect %s max_moves %u time %u freeze %s freeze_time %u",
2082 bgp
->evpn_info
->dup_addr_detect
?
2083 "enable" : "disable",
2084 bgp
->evpn_info
->dad_max_moves
,
2085 bgp
->evpn_info
->dad_time
,
2086 bgp
->evpn_info
->dad_freeze
?
2087 "enable" : "disable",
2088 bgp
->evpn_info
->dad_freeze_time
);
2092 zclient_create_header(s
, ZEBRA_DUPLICATE_ADDR_DETECTION
,
2094 stream_putl(s
, bgp
->evpn_info
->dup_addr_detect
);
2095 stream_putl(s
, bgp
->evpn_info
->dad_time
);
2096 stream_putl(s
, bgp
->evpn_info
->dad_max_moves
);
2097 stream_putl(s
, bgp
->evpn_info
->dad_freeze
);
2098 stream_putl(s
, bgp
->evpn_info
->dad_freeze_time
);
2099 stream_putw_at(s
, 0, stream_get_endp(s
));
2101 return zclient_send_message(zclient
);
2104 static int rule_notify_owner(ZAPI_CALLBACK_ARGS
)
2106 uint32_t seqno
, priority
, unique
;
2107 enum zapi_rule_notify_owner note
;
2108 struct bgp_pbr_action
*bgp_pbra
;
2109 struct bgp_pbr_rule
*bgp_pbr
= NULL
;
2112 if (!zapi_rule_notify_decode(zclient
->ibuf
, &seqno
, &priority
, &unique
,
2116 bgp_pbra
= bgp_pbr_action_rule_lookup(vrf_id
, unique
);
2118 /* look in bgp pbr rule */
2119 bgp_pbr
= bgp_pbr_rule_lookup(vrf_id
, unique
);
2120 if (!bgp_pbr
&& note
!= ZAPI_RULE_REMOVED
) {
2121 if (BGP_DEBUG(zebra
, ZEBRA
))
2122 zlog_debug("%s: Fail to look BGP rule (%u)",
2123 __PRETTY_FUNCTION__
, unique
);
2129 case ZAPI_RULE_FAIL_INSTALL
:
2130 if (BGP_DEBUG(zebra
, ZEBRA
))
2131 zlog_debug("%s: Received RULE_FAIL_INSTALL",
2132 __PRETTY_FUNCTION__
);
2134 bgp_pbra
->installed
= false;
2135 bgp_pbra
->install_in_progress
= false;
2137 bgp_pbr
->installed
= false;
2138 bgp_pbr
->install_in_progress
= false;
2141 case ZAPI_RULE_INSTALLED
:
2143 bgp_pbra
->installed
= true;
2144 bgp_pbra
->install_in_progress
= false;
2146 struct bgp_path_info
*path
;
2147 struct bgp_path_info_extra
*extra
;
2149 bgp_pbr
->installed
= true;
2150 bgp_pbr
->install_in_progress
= false;
2151 bgp_pbr
->action
->refcnt
++;
2152 /* link bgp_info to bgp_pbr */
2153 path
= (struct bgp_path_info
*)bgp_pbr
->path
;
2154 extra
= bgp_path_info_extra_get(path
);
2155 listnode_add_force(&extra
->bgp_fs_iprule
,
2158 if (BGP_DEBUG(zebra
, ZEBRA
))
2159 zlog_debug("%s: Received RULE_INSTALLED",
2160 __PRETTY_FUNCTION__
);
2162 case ZAPI_RULE_FAIL_REMOVE
:
2163 case ZAPI_RULE_REMOVED
:
2164 if (BGP_DEBUG(zebra
, ZEBRA
))
2165 zlog_debug("%s: Received RULE REMOVED",
2166 __PRETTY_FUNCTION__
);
2173 static int ipset_notify_owner(ZAPI_CALLBACK_ARGS
)
2176 enum zapi_ipset_notify_owner note
;
2177 struct bgp_pbr_match
*bgp_pbim
;
2179 if (!zapi_ipset_notify_decode(zclient
->ibuf
,
2184 bgp_pbim
= bgp_pbr_match_ipset_lookup(vrf_id
, unique
);
2186 if (BGP_DEBUG(zebra
, ZEBRA
))
2187 zlog_debug("%s: Fail to look BGP match ( %u, ID %u)",
2188 __PRETTY_FUNCTION__
, note
, unique
);
2193 case ZAPI_IPSET_FAIL_INSTALL
:
2194 if (BGP_DEBUG(zebra
, ZEBRA
))
2195 zlog_debug("%s: Received IPSET_FAIL_INSTALL",
2196 __PRETTY_FUNCTION__
);
2197 bgp_pbim
->installed
= false;
2198 bgp_pbim
->install_in_progress
= false;
2200 case ZAPI_IPSET_INSTALLED
:
2201 bgp_pbim
->installed
= true;
2202 bgp_pbim
->install_in_progress
= false;
2203 if (BGP_DEBUG(zebra
, ZEBRA
))
2204 zlog_debug("%s: Received IPSET_INSTALLED",
2205 __PRETTY_FUNCTION__
);
2207 case ZAPI_IPSET_FAIL_REMOVE
:
2208 case ZAPI_IPSET_REMOVED
:
2209 if (BGP_DEBUG(zebra
, ZEBRA
))
2210 zlog_debug("%s: Received IPSET REMOVED",
2211 __PRETTY_FUNCTION__
);
2218 static int ipset_entry_notify_owner(ZAPI_CALLBACK_ARGS
)
2221 char ipset_name
[ZEBRA_IPSET_NAME_SIZE
];
2222 enum zapi_ipset_entry_notify_owner note
;
2223 struct bgp_pbr_match_entry
*bgp_pbime
;
2225 if (!zapi_ipset_entry_notify_decode(
2231 bgp_pbime
= bgp_pbr_match_ipset_entry_lookup(vrf_id
,
2235 if (BGP_DEBUG(zebra
, ZEBRA
))
2236 zlog_debug("%s: Fail to look BGP match entry (%u, ID %u)",
2237 __PRETTY_FUNCTION__
, note
, unique
);
2242 case ZAPI_IPSET_ENTRY_FAIL_INSTALL
:
2243 if (BGP_DEBUG(zebra
, ZEBRA
))
2244 zlog_debug("%s: Received IPSET_ENTRY_FAIL_INSTALL",
2245 __PRETTY_FUNCTION__
);
2246 bgp_pbime
->installed
= false;
2247 bgp_pbime
->install_in_progress
= false;
2249 case ZAPI_IPSET_ENTRY_INSTALLED
:
2251 struct bgp_path_info
*path
;
2252 struct bgp_path_info_extra
*extra
;
2254 bgp_pbime
->installed
= true;
2255 bgp_pbime
->install_in_progress
= false;
2256 if (BGP_DEBUG(zebra
, ZEBRA
))
2257 zlog_debug("%s: Received IPSET_ENTRY_INSTALLED",
2258 __PRETTY_FUNCTION__
);
2259 /* link bgp_path_info to bpme */
2260 path
= (struct bgp_path_info
*)bgp_pbime
->path
;
2261 extra
= bgp_path_info_extra_get(path
);
2262 listnode_add_force(&extra
->bgp_fs_pbr
, bgp_pbime
);
2265 case ZAPI_IPSET_ENTRY_FAIL_REMOVE
:
2266 case ZAPI_IPSET_ENTRY_REMOVED
:
2267 if (BGP_DEBUG(zebra
, ZEBRA
))
2268 zlog_debug("%s: Received IPSET_ENTRY_REMOVED",
2269 __PRETTY_FUNCTION__
);
2275 static int iptable_notify_owner(ZAPI_CALLBACK_ARGS
)
2278 enum zapi_iptable_notify_owner note
;
2279 struct bgp_pbr_match
*bgpm
;
2281 if (!zapi_iptable_notify_decode(
2286 bgpm
= bgp_pbr_match_iptable_lookup(vrf_id
, unique
);
2288 if (BGP_DEBUG(zebra
, ZEBRA
))
2289 zlog_debug("%s: Fail to look BGP iptable (%u %u)",
2290 __PRETTY_FUNCTION__
, note
, unique
);
2294 case ZAPI_IPTABLE_FAIL_INSTALL
:
2295 if (BGP_DEBUG(zebra
, ZEBRA
))
2296 zlog_debug("%s: Received IPTABLE_FAIL_INSTALL",
2297 __PRETTY_FUNCTION__
);
2298 bgpm
->installed_in_iptable
= false;
2299 bgpm
->install_iptable_in_progress
= false;
2301 case ZAPI_IPTABLE_INSTALLED
:
2302 bgpm
->installed_in_iptable
= true;
2303 bgpm
->install_iptable_in_progress
= false;
2304 if (BGP_DEBUG(zebra
, ZEBRA
))
2305 zlog_debug("%s: Received IPTABLE_INSTALLED",
2306 __PRETTY_FUNCTION__
);
2307 bgpm
->action
->refcnt
++;
2309 case ZAPI_IPTABLE_FAIL_REMOVE
:
2310 case ZAPI_IPTABLE_REMOVED
:
2311 if (BGP_DEBUG(zebra
, ZEBRA
))
2312 zlog_debug("%s: Received IPTABLE REMOVED",
2313 __PRETTY_FUNCTION__
);
2319 /* this function is used to forge ip rule,
2320 * - either for iptable/ipset using fwmark id
2321 * - or for sample ip rule cmd
2323 static void bgp_encode_pbr_rule_action(struct stream
*s
,
2324 struct bgp_pbr_action
*pbra
,
2325 struct bgp_pbr_rule
*pbr
)
2329 stream_putl(s
, 0); /* seqno unused */
2331 stream_putl(s
, pbr
->priority
);
2334 /* ruleno unused - priority change
2335 * ruleno permits distinguishing various FS PBR entries
2336 * - FS PBR entries based on ipset/iptables
2337 * - FS PBR entries based on iprule
2338 * the latter may contain default routing information injected by FS
2341 stream_putl(s
, pbr
->unique
);
2343 stream_putl(s
, pbra
->unique
);
2344 if (pbr
&& pbr
->flags
& MATCH_IP_SRC_SET
)
2345 memcpy(&pfx
, &(pbr
->src
), sizeof(struct prefix
));
2347 memset(&pfx
, 0, sizeof(pfx
));
2348 pfx
.family
= AF_INET
;
2350 stream_putc(s
, pfx
.family
);
2351 stream_putc(s
, pfx
.prefixlen
);
2352 stream_put(s
, &pfx
.u
.prefix
, prefix_blen(&pfx
));
2354 stream_putw(s
, 0); /* src port */
2356 if (pbr
&& pbr
->flags
& MATCH_IP_DST_SET
)
2357 memcpy(&pfx
, &(pbr
->dst
), sizeof(struct prefix
));
2359 memset(&pfx
, 0, sizeof(pfx
));
2360 pfx
.family
= AF_INET
;
2362 stream_putc(s
, pfx
.family
);
2363 stream_putc(s
, pfx
.prefixlen
);
2364 stream_put(s
, &pfx
.u
.prefix
, prefix_blen(&pfx
));
2366 stream_putw(s
, 0); /* dst port */
2368 /* if pbr present, fwmark is not used */
2372 stream_putl(s
, pbra
->fwmark
); /* fwmark */
2374 stream_putl(s
, pbra
->table_id
);
2376 stream_putl(s
, 0); /* ifindex unused */
2379 static void bgp_encode_pbr_ipset_match(struct stream
*s
,
2380 struct bgp_pbr_match
*pbim
)
2382 stream_putl(s
, pbim
->unique
);
2383 stream_putl(s
, pbim
->type
);
2385 stream_put(s
, pbim
->ipset_name
,
2386 ZEBRA_IPSET_NAME_SIZE
);
2389 static void bgp_encode_pbr_ipset_entry_match(struct stream
*s
,
2390 struct bgp_pbr_match_entry
*pbime
)
2392 stream_putl(s
, pbime
->unique
);
2393 /* check that back pointer is not null */
2394 stream_put(s
, pbime
->backpointer
->ipset_name
,
2395 ZEBRA_IPSET_NAME_SIZE
);
2397 stream_putc(s
, pbime
->src
.family
);
2398 stream_putc(s
, pbime
->src
.prefixlen
);
2399 stream_put(s
, &pbime
->src
.u
.prefix
, prefix_blen(&pbime
->src
));
2401 stream_putc(s
, pbime
->dst
.family
);
2402 stream_putc(s
, pbime
->dst
.prefixlen
);
2403 stream_put(s
, &pbime
->dst
.u
.prefix
, prefix_blen(&pbime
->dst
));
2405 stream_putw(s
, pbime
->src_port_min
);
2406 stream_putw(s
, pbime
->src_port_max
);
2407 stream_putw(s
, pbime
->dst_port_min
);
2408 stream_putw(s
, pbime
->dst_port_max
);
2409 stream_putc(s
, pbime
->proto
);
2412 static void bgp_encode_pbr_iptable_match(struct stream
*s
,
2413 struct bgp_pbr_action
*bpa
,
2414 struct bgp_pbr_match
*pbm
)
2416 stream_putl(s
, pbm
->unique2
);
2418 stream_putl(s
, pbm
->type
);
2420 stream_putl(s
, pbm
->flags
);
2422 /* TODO: correlate with what is contained
2423 * into bgp_pbr_action.
2424 * currently only forward supported
2426 if (bpa
->nh
.type
== NEXTHOP_TYPE_BLACKHOLE
)
2427 stream_putl(s
, ZEBRA_IPTABLES_DROP
);
2429 stream_putl(s
, ZEBRA_IPTABLES_FORWARD
);
2430 stream_putl(s
, bpa
->fwmark
);
2431 stream_put(s
, pbm
->ipset_name
,
2432 ZEBRA_IPSET_NAME_SIZE
);
2433 stream_putw(s
, pbm
->pkt_len_min
);
2434 stream_putw(s
, pbm
->pkt_len_max
);
2435 stream_putw(s
, pbm
->tcp_flags
);
2436 stream_putw(s
, pbm
->tcp_mask_flags
);
2437 stream_putc(s
, pbm
->dscp_value
);
2438 stream_putc(s
, pbm
->fragment
);
2439 stream_putc(s
, pbm
->protocol
);
2442 /* BGP has established connection with Zebra. */
2443 static void bgp_zebra_connected(struct zclient
*zclient
)
2447 zclient_num_connects
++; /* increment even if not responding */
2449 /* At this point, we may or may not have BGP instances configured, but
2450 * we're only interested in the default VRF (others wouldn't have learnt
2451 * the VRF from Zebra yet.)
2453 bgp
= bgp_get_default();
2457 bgp_zebra_instance_register(bgp
);
2459 /* Send the client registration */
2460 bfd_client_sendmsg(zclient
, ZEBRA_BFD_CLIENT_REGISTER
, bgp
->vrf_id
);
2462 /* tell label pool that zebra is connected */
2463 bgp_lp_event_zebra_up();
2465 /* TODO - What if we have peers and networks configured, do we have to
2470 static int bgp_zebra_process_local_es(ZAPI_CALLBACK_ARGS
)
2473 struct bgp
*bgp
= NULL
;
2474 struct stream
*s
= NULL
;
2475 char buf
[ESI_STR_LEN
];
2476 char buf1
[INET6_ADDRSTRLEN
];
2477 struct ipaddr originator_ip
;
2479 memset(&esi
, 0, sizeof(esi_t
));
2480 memset(&originator_ip
, 0, sizeof(struct ipaddr
));
2482 bgp
= bgp_lookup_by_vrf_id(vrf_id
);
2487 stream_get(&esi
, s
, sizeof(esi_t
));
2488 stream_get(&originator_ip
, s
, sizeof(struct ipaddr
));
2490 if (BGP_DEBUG(zebra
, ZEBRA
))
2491 zlog_debug("Rx %s ESI %s originator-ip %s",
2492 (cmd
== ZEBRA_LOCAL_ES_ADD
) ? "add" : "del",
2493 esi_to_str(&esi
, buf
, sizeof(buf
)),
2494 ipaddr2str(&originator_ip
, buf1
, sizeof(buf1
)));
2496 if (cmd
== ZEBRA_LOCAL_ES_ADD
)
2497 bgp_evpn_local_es_add(bgp
, &esi
, &originator_ip
);
2499 bgp_evpn_local_es_del(bgp
, &esi
, &originator_ip
);
2503 static int bgp_zebra_process_local_l3vni(ZAPI_CALLBACK_ARGS
)
2506 char buf
[ETHER_ADDR_STRLEN
];
2508 struct ethaddr rmac
;
2509 struct in_addr originator_ip
;
2511 ifindex_t svi_ifindex
;
2513 memset(&rmac
, 0, sizeof(struct ethaddr
));
2514 memset(&originator_ip
, 0, sizeof(struct in_addr
));
2516 l3vni
= stream_getl(s
);
2517 if (cmd
== ZEBRA_L3VNI_ADD
) {
2518 stream_get(&rmac
, s
, sizeof(struct ethaddr
));
2519 originator_ip
.s_addr
= stream_get_ipv4(s
);
2520 stream_get(&filter
, s
, sizeof(int));
2521 svi_ifindex
= stream_getl(s
);
2523 if (BGP_DEBUG(zebra
, ZEBRA
))
2524 zlog_debug("Rx L3-VNI ADD VRF %s VNI %u RMAC %s filter %s svi-if %u",
2525 vrf_id_to_name(vrf_id
), l3vni
,
2526 prefix_mac2str(&rmac
, buf
, sizeof(buf
)),
2527 filter
? "prefix-routes-only" : "none",
2530 bgp_evpn_local_l3vni_add(l3vni
, vrf_id
, &rmac
, originator_ip
,
2531 filter
, svi_ifindex
);
2533 if (BGP_DEBUG(zebra
, ZEBRA
))
2534 zlog_debug("Rx L3-VNI DEL VRF %s VNI %u",
2535 vrf_id_to_name(vrf_id
), l3vni
);
2537 bgp_evpn_local_l3vni_del(l3vni
, vrf_id
);
2543 static int bgp_zebra_process_local_vni(ZAPI_CALLBACK_ARGS
)
2548 struct in_addr vtep_ip
= {INADDR_ANY
};
2549 vrf_id_t tenant_vrf_id
= VRF_DEFAULT
;
2550 struct in_addr mcast_grp
= {INADDR_ANY
};
2553 vni
= stream_getl(s
);
2554 if (cmd
== ZEBRA_VNI_ADD
) {
2555 vtep_ip
.s_addr
= stream_get_ipv4(s
);
2556 stream_get(&tenant_vrf_id
, s
, sizeof(vrf_id_t
));
2557 mcast_grp
.s_addr
= stream_get_ipv4(s
);
2560 bgp
= bgp_lookup_by_vrf_id(vrf_id
);
2564 if (BGP_DEBUG(zebra
, ZEBRA
))
2565 zlog_debug("Rx VNI %s VRF %s VNI %u tenant-vrf %s",
2566 (cmd
== ZEBRA_VNI_ADD
) ? "add" : "del",
2567 vrf_id_to_name(vrf_id
), vni
,
2568 vrf_id_to_name(tenant_vrf_id
));
2570 if (cmd
== ZEBRA_VNI_ADD
)
2571 return bgp_evpn_local_vni_add(
2572 bgp
, vni
, vtep_ip
.s_addr
? vtep_ip
: bgp
->router_id
,
2573 tenant_vrf_id
, mcast_grp
);
2575 return bgp_evpn_local_vni_del(bgp
, vni
);
2578 static int bgp_zebra_process_local_macip(ZAPI_CALLBACK_ARGS
)
2586 char buf
[ETHER_ADDR_STRLEN
];
2587 char buf1
[INET6_ADDRSTRLEN
];
2589 uint32_t seqnum
= 0;
2592 memset(&ip
, 0, sizeof(ip
));
2594 vni
= stream_getl(s
);
2595 stream_get(&mac
.octet
, s
, ETH_ALEN
);
2596 ipa_len
= stream_getl(s
);
2597 if (ipa_len
!= 0 && ipa_len
!= IPV4_MAX_BYTELEN
2598 && ipa_len
!= IPV6_MAX_BYTELEN
) {
2599 flog_err(EC_BGP_MACIP_LEN
,
2600 "%u:Recv MACIP %s with invalid IP addr length %d",
2601 vrf_id
, (cmd
== ZEBRA_MACIP_ADD
) ? "Add" : "Del",
2608 (ipa_len
== IPV4_MAX_BYTELEN
) ? IPADDR_V4
: IPADDR_V6
;
2609 stream_get(&ip
.ip
.addr
, s
, ipa_len
);
2611 if (cmd
== ZEBRA_MACIP_ADD
) {
2612 flags
= stream_getc(s
);
2613 seqnum
= stream_getl(s
);
2615 state
= stream_getl(s
);
2618 bgp
= bgp_lookup_by_vrf_id(vrf_id
);
2622 if (BGP_DEBUG(zebra
, ZEBRA
))
2623 zlog_debug("%u:Recv MACIP %s flags 0x%x MAC %s IP %s VNI %u seq %u state %d",
2624 vrf_id
, (cmd
== ZEBRA_MACIP_ADD
) ? "Add" : "Del",
2625 flags
, prefix_mac2str(&mac
, buf
, sizeof(buf
)),
2626 ipaddr2str(&ip
, buf1
, sizeof(buf1
)), vni
, seqnum
,
2629 if (cmd
== ZEBRA_MACIP_ADD
)
2630 return bgp_evpn_local_macip_add(bgp
, vni
, &mac
, &ip
,
2633 return bgp_evpn_local_macip_del(bgp
, vni
, &mac
, &ip
, state
);
2636 static void bgp_zebra_process_local_ip_prefix(ZAPI_CALLBACK_ARGS
)
2638 struct stream
*s
= NULL
;
2639 struct bgp
*bgp_vrf
= NULL
;
2641 char buf
[PREFIX_STRLEN
];
2643 memset(&p
, 0, sizeof(struct prefix
));
2645 stream_get(&p
, s
, sizeof(struct prefix
));
2647 bgp_vrf
= bgp_lookup_by_vrf_id(vrf_id
);
2651 if (BGP_DEBUG(zebra
, ZEBRA
))
2652 zlog_debug("Recv prefix %s %s on vrf %s",
2653 prefix2str(&p
, buf
, sizeof(buf
)),
2654 (cmd
== ZEBRA_IP_PREFIX_ROUTE_ADD
) ? "ADD" : "DEL",
2655 vrf_id_to_name(vrf_id
));
2657 if (cmd
== ZEBRA_IP_PREFIX_ROUTE_ADD
) {
2659 if (p
.family
== AF_INET
)
2660 bgp_evpn_advertise_type5_route(bgp_vrf
, &p
, NULL
,
2661 AFI_IP
, SAFI_UNICAST
);
2663 bgp_evpn_advertise_type5_route(bgp_vrf
, &p
, NULL
,
2664 AFI_IP6
, SAFI_UNICAST
);
2667 if (p
.family
== AF_INET
)
2668 bgp_evpn_withdraw_type5_route(bgp_vrf
, &p
, AFI_IP
,
2671 bgp_evpn_withdraw_type5_route(bgp_vrf
, &p
, AFI_IP6
,
2676 static void bgp_zebra_process_label_chunk(ZAPI_CALLBACK_ARGS
)
2678 struct stream
*s
= NULL
;
2679 uint8_t response_keep
;
2683 unsigned short instance
;
2686 STREAM_GETC(s
, proto
);
2687 STREAM_GETW(s
, instance
);
2688 STREAM_GETC(s
, response_keep
);
2689 STREAM_GETL(s
, first
);
2690 STREAM_GETL(s
, last
);
2692 if (zclient
->redist_default
!= proto
) {
2693 flog_err(EC_BGP_LM_ERROR
, "Got LM msg with wrong proto %u",
2697 if (zclient
->instance
!= instance
) {
2698 flog_err(EC_BGP_LM_ERROR
, "Got LM msg with wrong instance %u",
2704 first
< MPLS_LABEL_UNRESERVED_MIN
||
2705 last
> MPLS_LABEL_UNRESERVED_MAX
) {
2707 flog_err(EC_BGP_LM_ERROR
, "%s: Invalid Label chunk: %u - %u",
2708 __func__
, first
, last
);
2711 if (BGP_DEBUG(zebra
, ZEBRA
)) {
2712 zlog_debug("Label Chunk assign: %u - %u (%u) ",
2713 first
, last
, response_keep
);
2716 bgp_lp_event_chunk(response_keep
, first
, last
);
2718 stream_failure
: /* for STREAM_GETX */
2722 extern struct zebra_privs_t bgpd_privs
;
2724 void bgp_zebra_init(struct thread_master
*master
, unsigned short instance
)
2726 zclient_num_connects
= 0;
2728 /* Set default values. */
2729 zclient
= zclient_new(master
, &zclient_options_default
);
2730 zclient_init(zclient
, ZEBRA_ROUTE_BGP
, 0, &bgpd_privs
);
2731 zclient
->zebra_connected
= bgp_zebra_connected
;
2732 zclient
->router_id_update
= bgp_router_id_update
;
2733 zclient
->interface_add
= bgp_interface_add
;
2734 zclient
->interface_delete
= bgp_interface_delete
;
2735 zclient
->interface_address_add
= bgp_interface_address_add
;
2736 zclient
->interface_address_delete
= bgp_interface_address_delete
;
2737 zclient
->interface_nbr_address_add
= bgp_interface_nbr_address_add
;
2738 zclient
->interface_nbr_address_delete
=
2739 bgp_interface_nbr_address_delete
;
2740 zclient
->interface_vrf_update
= bgp_interface_vrf_update
;
2741 zclient
->redistribute_route_add
= zebra_read_route
;
2742 zclient
->redistribute_route_del
= zebra_read_route
;
2743 zclient
->interface_up
= bgp_interface_up
;
2744 zclient
->interface_down
= bgp_interface_down
;
2745 zclient
->nexthop_update
= bgp_read_nexthop_update
;
2746 zclient
->import_check_update
= bgp_read_import_check_update
;
2747 zclient
->fec_update
= bgp_read_fec_update
;
2748 zclient
->local_es_add
= bgp_zebra_process_local_es
;
2749 zclient
->local_es_del
= bgp_zebra_process_local_es
;
2750 zclient
->local_vni_add
= bgp_zebra_process_local_vni
;
2751 zclient
->local_vni_del
= bgp_zebra_process_local_vni
;
2752 zclient
->local_macip_add
= bgp_zebra_process_local_macip
;
2753 zclient
->local_macip_del
= bgp_zebra_process_local_macip
;
2754 zclient
->local_l3vni_add
= bgp_zebra_process_local_l3vni
;
2755 zclient
->local_l3vni_del
= bgp_zebra_process_local_l3vni
;
2756 zclient
->local_ip_prefix_add
= bgp_zebra_process_local_ip_prefix
;
2757 zclient
->local_ip_prefix_del
= bgp_zebra_process_local_ip_prefix
;
2758 zclient
->label_chunk
= bgp_zebra_process_label_chunk
;
2759 zclient
->rule_notify_owner
= rule_notify_owner
;
2760 zclient
->ipset_notify_owner
= ipset_notify_owner
;
2761 zclient
->ipset_entry_notify_owner
= ipset_entry_notify_owner
;
2762 zclient
->iptable_notify_owner
= iptable_notify_owner
;
2763 zclient
->instance
= instance
;
2766 void bgp_zebra_destroy(void)
2768 if (zclient
== NULL
)
2770 zclient_stop(zclient
);
2771 zclient_free(zclient
);
2775 int bgp_zebra_num_connects(void)
2777 return zclient_num_connects
;
2780 void bgp_send_pbr_rule_action(struct bgp_pbr_action
*pbra
,
2781 struct bgp_pbr_rule
*pbr
,
2786 if (pbra
->install_in_progress
&& !pbr
)
2788 if (pbr
&& pbr
->install_in_progress
)
2790 if (BGP_DEBUG(zebra
, ZEBRA
)) {
2792 zlog_debug("%s: table %d (ip rule) %d",
2793 __PRETTY_FUNCTION__
,
2794 pbra
->table_id
, install
);
2796 zlog_debug("%s: table %d fwmark %d %d",
2797 __PRETTY_FUNCTION__
,
2798 pbra
->table_id
, pbra
->fwmark
, install
);
2803 zclient_create_header(s
,
2804 install
? ZEBRA_RULE_ADD
: ZEBRA_RULE_DELETE
,
2806 stream_putl(s
, 1); /* send one pbr action */
2808 bgp_encode_pbr_rule_action(s
, pbra
, pbr
);
2810 stream_putw_at(s
, 0, stream_get_endp(s
));
2811 if (!zclient_send_message(zclient
) && install
) {
2813 pbra
->install_in_progress
= true;
2815 pbr
->install_in_progress
= true;
2819 void bgp_send_pbr_ipset_match(struct bgp_pbr_match
*pbrim
, bool install
)
2823 if (pbrim
->install_in_progress
)
2825 if (BGP_DEBUG(zebra
, ZEBRA
))
2826 zlog_debug("%s: name %s type %d %d, ID %u",
2827 __PRETTY_FUNCTION__
,
2828 pbrim
->ipset_name
, pbrim
->type
,
2829 install
, pbrim
->unique
);
2833 zclient_create_header(s
,
2834 install
? ZEBRA_IPSET_CREATE
:
2835 ZEBRA_IPSET_DESTROY
,
2838 stream_putl(s
, 1); /* send one pbr action */
2840 bgp_encode_pbr_ipset_match(s
, pbrim
);
2842 stream_putw_at(s
, 0, stream_get_endp(s
));
2843 if (!zclient_send_message(zclient
) && install
)
2844 pbrim
->install_in_progress
= true;
2847 void bgp_send_pbr_ipset_entry_match(struct bgp_pbr_match_entry
*pbrime
,
2852 if (pbrime
->install_in_progress
)
2854 if (BGP_DEBUG(zebra
, ZEBRA
))
2855 zlog_debug("%s: name %s %d %d, ID %u", __PRETTY_FUNCTION__
,
2856 pbrime
->backpointer
->ipset_name
,
2857 pbrime
->unique
, install
, pbrime
->unique
);
2861 zclient_create_header(s
,
2862 install
? ZEBRA_IPSET_ENTRY_ADD
:
2863 ZEBRA_IPSET_ENTRY_DELETE
,
2866 stream_putl(s
, 1); /* send one pbr action */
2868 bgp_encode_pbr_ipset_entry_match(s
, pbrime
);
2870 stream_putw_at(s
, 0, stream_get_endp(s
));
2871 if (!zclient_send_message(zclient
) && install
)
2872 pbrime
->install_in_progress
= true;
2875 static void bgp_encode_pbr_interface_list(struct bgp
*bgp
, struct stream
*s
)
2877 struct bgp_pbr_config
*bgp_pbr_cfg
= bgp
->bgp_pbr_cfg
;
2878 struct bgp_pbr_interface_head
*head
;
2879 struct bgp_pbr_interface
*pbr_if
;
2880 struct interface
*ifp
;
2884 head
= &(bgp_pbr_cfg
->ifaces_by_name_ipv4
);
2886 RB_FOREACH (pbr_if
, bgp_pbr_interface_head
, head
) {
2887 ifp
= if_lookup_by_name(pbr_if
->name
, bgp
->vrf_id
);
2889 stream_putl(s
, ifp
->ifindex
);
2893 static int bgp_pbr_get_ifnumber(struct bgp
*bgp
)
2895 struct bgp_pbr_config
*bgp_pbr_cfg
= bgp
->bgp_pbr_cfg
;
2896 struct bgp_pbr_interface_head
*head
;
2897 struct bgp_pbr_interface
*pbr_if
;
2902 head
= &(bgp_pbr_cfg
->ifaces_by_name_ipv4
);
2904 RB_FOREACH (pbr_if
, bgp_pbr_interface_head
, head
) {
2905 if (if_lookup_by_name(pbr_if
->name
, bgp
->vrf_id
))
2911 void bgp_send_pbr_iptable(struct bgp_pbr_action
*pba
,
2912 struct bgp_pbr_match
*pbm
,
2919 if (pbm
->install_iptable_in_progress
)
2921 if (BGP_DEBUG(zebra
, ZEBRA
))
2922 zlog_debug("%s: name %s type %d mark %d %d, ID %u",
2923 __PRETTY_FUNCTION__
, pbm
->ipset_name
,
2924 pbm
->type
, pba
->fwmark
, install
,
2929 zclient_create_header(s
,
2930 install
? ZEBRA_IPTABLE_ADD
:
2931 ZEBRA_IPTABLE_DELETE
,
2934 bgp_encode_pbr_iptable_match(s
, pba
, pbm
);
2935 nb_interface
= bgp_pbr_get_ifnumber(pba
->bgp
);
2936 stream_putl(s
, nb_interface
);
2938 bgp_encode_pbr_interface_list(pba
->bgp
, s
);
2939 stream_putw_at(s
, 0, stream_get_endp(s
));
2940 ret
= zclient_send_message(zclient
);
2945 pbm
->install_iptable_in_progress
= true;
2949 /* inject in table <table_id> a default route to:
2950 * - if nexthop IP is present : to this nexthop
2951 * - if vrf is different from local : to the matching VRF
2953 void bgp_zebra_announce_default(struct bgp
*bgp
, struct nexthop
*nh
,
2954 afi_t afi
, uint32_t table_id
, bool announce
)
2956 struct zapi_nexthop
*api_nh
;
2957 struct zapi_route api
;
2960 if (!nh
|| nh
->type
!= NEXTHOP_TYPE_IPV4
2961 || nh
->vrf_id
== VRF_UNKNOWN
)
2963 memset(&p
, 0, sizeof(struct prefix
));
2968 memset(&api
, 0, sizeof(api
));
2969 api
.vrf_id
= bgp
->vrf_id
;
2970 api
.type
= ZEBRA_ROUTE_BGP
;
2971 api
.safi
= SAFI_UNICAST
;
2973 api
.tableid
= table_id
;
2974 api
.nexthop_num
= 1;
2975 SET_FLAG(api
.message
, ZAPI_MESSAGE_TABLEID
);
2976 SET_FLAG(api
.message
, ZAPI_MESSAGE_NEXTHOP
);
2977 api_nh
= &api
.nexthops
[0];
2979 api
.distance
= ZEBRA_EBGP_DISTANCE_DEFAULT
;
2980 SET_FLAG(api
.message
, ZAPI_MESSAGE_DISTANCE
);
2983 if (nh
->gate
.ipv4
.s_addr
) {
2984 char buff
[PREFIX_STRLEN
];
2986 api_nh
->vrf_id
= nh
->vrf_id
;
2987 api_nh
->gate
.ipv4
= nh
->gate
.ipv4
;
2988 api_nh
->type
= NEXTHOP_TYPE_IPV4
;
2990 inet_ntop(AF_INET
, &(nh
->gate
.ipv4
), buff
, INET_ADDRSTRLEN
);
2991 if (BGP_DEBUG(zebra
, ZEBRA
))
2992 zlog_info("BGP: %s default route to %s table %d (redirect IP)",
2993 announce
? "adding" : "withdrawing",
2995 zclient_route_send(announce
? ZEBRA_ROUTE_ADD
2996 : ZEBRA_ROUTE_DELETE
,
2998 } else if (nh
->vrf_id
!= bgp
->vrf_id
) {
3000 struct interface
*ifp
;
3002 vrf
= vrf_lookup_by_id(nh
->vrf_id
);
3005 /* create default route with interface <VRF>
3006 * with nexthop-vrf <VRF>
3008 ifp
= if_lookup_by_name_all_vrf(vrf
->name
);
3011 api_nh
->vrf_id
= nh
->vrf_id
;
3012 api_nh
->type
= NEXTHOP_TYPE_IFINDEX
;
3013 api_nh
->ifindex
= ifp
->ifindex
;
3014 if (BGP_DEBUG(zebra
, ZEBRA
))
3015 zlog_info("BGP: %s default route to %s table %d (redirect VRF)",
3016 announce
? "adding" : "withdrawing",
3017 vrf
->name
, table_id
);
3018 zclient_route_send(announce
? ZEBRA_ROUTE_ADD
3019 : ZEBRA_ROUTE_DELETE
,