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"
70 #include "bgpd/bgp_orr.h"
72 /* All information about zebra. */
73 struct zclient
*zclient
= NULL
;
75 static int bgp_opaque_msg_handler(ZAPI_CALLBACK_ARGS
);
77 /* hook to indicate vrf status change for SNMP */
78 DEFINE_HOOK(bgp_vrf_status_changed
, (struct bgp
*bgp
, struct interface
*ifp
),
81 DEFINE_MTYPE_STATIC(BGPD
, BGP_IF_INFO
, "BGP interface context");
83 /* Can we install into zebra? */
84 static inline bool bgp_install_info_to_zebra(struct bgp
*bgp
)
86 if (zclient
->sock
<= 0)
89 if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp
)) {
91 "%s: No zebra instance to talk to, not installing information",
99 int zclient_num_connects
;
101 /* Router-id update message from zebra. */
102 static int bgp_router_id_update(ZAPI_CALLBACK_ARGS
)
104 struct prefix router_id
;
106 zebra_router_id_update_read(zclient
->ibuf
, &router_id
);
108 if (BGP_DEBUG(zebra
, ZEBRA
))
109 zlog_debug("Rx Router Id update VRF %u Id %pFX", vrf_id
,
112 bgp_router_id_zebra_bump(vrf_id
, &router_id
);
116 /* Nexthop update message from zebra. */
117 static int bgp_read_nexthop_update(ZAPI_CALLBACK_ARGS
)
119 bgp_parse_nexthop_update(cmd
, vrf_id
);
123 /* Set or clear interface on which unnumbered neighbor is configured. This
124 * would in turn cause BGP to initiate or turn off IPv6 RAs on this
127 static void bgp_update_interface_nbrs(struct bgp
*bgp
, struct interface
*ifp
,
128 struct interface
*upd_ifp
)
130 struct listnode
*node
, *nnode
;
133 for (ALL_LIST_ELEMENTS(bgp
->peer
, node
, nnode
, peer
)) {
134 if (peer
->conf_if
&& (strcmp(peer
->conf_if
, ifp
->name
) == 0)) {
137 bgp_zebra_initiate_radv(bgp
, peer
);
139 bgp_zebra_terminate_radv(bgp
, peer
);
146 static int bgp_read_fec_update(ZAPI_CALLBACK_ARGS
)
148 bgp_parse_fec_update();
152 static void bgp_start_interface_nbrs(struct bgp
*bgp
, struct interface
*ifp
)
154 struct listnode
*node
, *nnode
;
157 for (ALL_LIST_ELEMENTS(bgp
->peer
, node
, nnode
, peer
)) {
158 if (peer
->conf_if
&& (strcmp(peer
->conf_if
, ifp
->name
) == 0)
159 && !peer_established(peer
)) {
160 if (peer_active(peer
))
161 BGP_EVENT_ADD(peer
, BGP_Stop
);
162 BGP_EVENT_ADD(peer
, BGP_Start
);
167 static void bgp_nbr_connected_add(struct bgp
*bgp
, struct nbr_connected
*ifc
)
169 struct listnode
*node
;
170 struct connected
*connected
;
171 struct interface
*ifp
;
174 /* Kick-off the FSM for any relevant peers only if there is a
175 * valid local address on the interface.
178 for (ALL_LIST_ELEMENTS_RO(ifp
->connected
, node
, connected
)) {
179 p
= connected
->address
;
180 if (p
->family
== AF_INET6
181 && IN6_IS_ADDR_LINKLOCAL(&p
->u
.prefix6
))
187 bgp_start_interface_nbrs(bgp
, ifp
);
190 static void bgp_nbr_connected_delete(struct bgp
*bgp
, struct nbr_connected
*ifc
,
193 struct listnode
*node
, *nnode
;
195 struct interface
*ifp
;
197 for (ALL_LIST_ELEMENTS(bgp
->peer
, node
, nnode
, peer
)) {
199 && (strcmp(peer
->conf_if
, ifc
->ifp
->name
) == 0)) {
200 peer
->last_reset
= PEER_DOWN_NBR_ADDR_DEL
;
201 BGP_EVENT_ADD(peer
, BGP_Stop
);
204 /* Free neighbor also, if we're asked to. */
207 listnode_delete(ifp
->nbr_connected
, ifc
);
208 nbr_connected_free(ifc
);
212 static int bgp_ifp_destroy(struct interface
*ifp
)
216 bgp
= ifp
->vrf
->info
;
218 if (BGP_DEBUG(zebra
, ZEBRA
))
219 zlog_debug("Rx Intf del VRF %u IF %s", ifp
->vrf
->vrf_id
,
223 bgp_update_interface_nbrs(bgp
, ifp
, NULL
);
224 hook_call(bgp_vrf_status_changed
, bgp
, ifp
);
227 bgp_mac_del_mac_entry(ifp
);
232 static int bgp_ifp_up(struct interface
*ifp
)
235 struct nbr_connected
*nc
;
236 struct listnode
*node
, *nnode
;
237 struct bgp
*bgp_default
= bgp_get_default();
240 bgp
= ifp
->vrf
->info
;
242 bgp_mac_add_mac_entry(ifp
);
244 if (BGP_DEBUG(zebra
, ZEBRA
))
245 zlog_debug("Rx Intf up VRF %u IF %s", ifp
->vrf
->vrf_id
,
251 for (ALL_LIST_ELEMENTS(ifp
->connected
, node
, nnode
, c
))
252 bgp_connected_add(bgp
, c
);
254 for (ALL_LIST_ELEMENTS(ifp
->nbr_connected
, node
, nnode
, nc
))
255 bgp_nbr_connected_add(bgp
, nc
);
257 hook_call(bgp_vrf_status_changed
, bgp
, ifp
);
260 if (bgp_default
&& if_is_loopback(ifp
)) {
261 vpn_leak_zebra_vrf_label_update(bgp
, AFI_IP
);
262 vpn_leak_zebra_vrf_label_update(bgp
, AFI_IP6
);
263 vpn_leak_zebra_vrf_sid_update(bgp
, AFI_IP
);
264 vpn_leak_zebra_vrf_sid_update(bgp
, AFI_IP6
);
265 vpn_leak_postchange_all();
271 static int bgp_ifp_down(struct interface
*ifp
)
274 struct nbr_connected
*nc
;
275 struct listnode
*node
, *nnode
;
276 struct bgp
*bgp_default
= bgp_get_default();
280 bgp
= ifp
->vrf
->info
;
282 bgp_mac_del_mac_entry(ifp
);
284 if (BGP_DEBUG(zebra
, ZEBRA
))
285 zlog_debug("Rx Intf down VRF %u IF %s", ifp
->vrf
->vrf_id
,
291 for (ALL_LIST_ELEMENTS(ifp
->connected
, node
, nnode
, c
))
292 bgp_connected_delete(bgp
, c
);
294 for (ALL_LIST_ELEMENTS(ifp
->nbr_connected
, node
, nnode
, nc
))
295 bgp_nbr_connected_delete(bgp
, nc
, 1);
297 /* Fast external-failover */
298 if (!CHECK_FLAG(bgp
->flags
, BGP_FLAG_NO_FAST_EXT_FAILOVER
)) {
300 for (ALL_LIST_ELEMENTS(bgp
->peer
, node
, nnode
, peer
)) {
301 /* Take down directly connected peers. */
302 if ((peer
->ttl
!= BGP_DEFAULT_TTL
)
303 && (peer
->gtsm_hops
!= BGP_GTSM_HOPS_CONNECTED
))
306 if (ifp
== peer
->nexthop
.ifp
) {
307 BGP_EVENT_ADD(peer
, BGP_Stop
);
308 peer
->last_reset
= PEER_DOWN_IF_DOWN
;
313 hook_call(bgp_vrf_status_changed
, bgp
, ifp
);
314 bgp_nht_ifp_down(ifp
);
316 if (bgp_default
&& if_is_loopback(ifp
)) {
317 vpn_leak_zebra_vrf_label_update(bgp
, AFI_IP
);
318 vpn_leak_zebra_vrf_label_update(bgp
, AFI_IP6
);
319 vpn_leak_zebra_vrf_sid_update(bgp
, AFI_IP
);
320 vpn_leak_zebra_vrf_sid_update(bgp
, AFI_IP6
);
321 vpn_leak_postchange_all();
327 static int bgp_interface_address_add(ZAPI_CALLBACK_ARGS
)
329 struct connected
*ifc
;
333 struct listnode
*node
, *nnode
;
337 bgp
= bgp_lookup_by_vrf_id(vrf_id
);
339 ifc
= zebra_interface_address_read(cmd
, zclient
->ibuf
, vrf_id
);
344 if (bgp_debug_zebra(ifc
->address
))
345 zlog_debug("Rx Intf address add VRF %u IF %s addr %pFX", vrf_id
,
346 ifc
->ifp
->name
, ifc
->address
);
351 if (if_is_operative(ifc
->ifp
)) {
352 bgp_connected_add(bgp
, ifc
);
354 /* If we have learnt of any neighbors on this interface,
355 * check to kick off any BGP interface-based neighbors,
356 * but only if this is a link-local address.
358 if (IN6_IS_ADDR_LINKLOCAL(&ifc
->address
->u
.prefix6
)
359 && !list_isempty(ifc
->ifp
->nbr_connected
))
360 bgp_start_interface_nbrs(bgp
, ifc
->ifp
);
364 for (ALL_LIST_ELEMENTS(bgp
->peer
, node
, nnode
, peer
)) {
365 if (addr
->family
== AF_INET
)
369 * If the Peer's interface name matches the
370 * interface name for which BGP received the
371 * update and if the received interface address
372 * is a globalV6 and if the peer is currently
373 * using a v4-mapped-v6 addr or a link local
374 * address, then copy the Rxed global v6 addr
375 * into peer's v6_global and send updates out
376 * with new nexthop addr.
378 if ((peer
->conf_if
&&
379 (strcmp(peer
->conf_if
, ifc
->ifp
->name
) ==
381 !IN6_IS_ADDR_LINKLOCAL(&addr
->u
.prefix6
) &&
383 &peer
->nexthop
.v6_global
)) ||
384 IN6_IS_ADDR_LINKLOCAL(
385 &peer
->nexthop
.v6_global
))) {
387 if (bgp_debug_zebra(ifc
->address
)) {
389 "Update peer %pBP's current intf addr %pI6 and send updates",
394 memcpy(&peer
->nexthop
.v6_global
,
397 FOREACH_AFI_SAFI (afi
, safi
)
398 bgp_announce_route(peer
, afi
,
408 static int bgp_interface_address_delete(ZAPI_CALLBACK_ARGS
)
410 struct listnode
*node
, *nnode
;
411 struct bgp_path_info
*pi
;
412 struct bgp_table
*table
;
413 struct bgp_dest
*dest
;
414 struct connected
*ifc
;
416 struct bgp
*bgp
, *from_bgp
, *bgp_default
;
417 struct listnode
*next
;
422 bgp
= bgp_lookup_by_vrf_id(vrf_id
);
424 ifc
= zebra_interface_address_read(cmd
, zclient
->ibuf
, vrf_id
);
429 if (bgp_debug_zebra(ifc
->address
))
430 zlog_debug("Rx Intf address del VRF %u IF %s addr %pFX", vrf_id
,
431 ifc
->ifp
->name
, ifc
->address
);
433 if (bgp
&& if_is_operative(ifc
->ifp
)) {
434 bgp_connected_delete(bgp
, ifc
);
441 * When we are using the v6 global as part of the peering
442 * nexthops and we are removing it, then we need to
443 * clear the peer data saved for that nexthop and
444 * cause a re-announcement of the route. Since
445 * we do not want the peering to bounce.
447 for (ALL_LIST_ELEMENTS(bgp
->peer
, node
, nnode
, peer
)) {
448 if (addr
->family
== AF_INET
)
451 if (!IN6_IS_ADDR_LINKLOCAL(&addr
->u
.prefix6
)
452 && memcmp(&peer
->nexthop
.v6_global
,
453 &addr
->u
.prefix6
, 16)
455 memset(&peer
->nexthop
.v6_global
, 0, 16);
456 FOREACH_AFI_SAFI (afi
, safi
)
457 bgp_announce_route(peer
, afi
, safi
,
463 bgp_default
= bgp_get_default();
464 afi
= family2afi(addr
->family
);
467 /* When the last IPv4 address was deleted, Linux removes all routes
468 * using the interface so that bgpd needs to re-send them.
470 if (bgp_default
&& afi
== AFI_IP
) {
471 for (ALL_LIST_ELEMENTS_RO(bm
->bgp
, next
, from_bgp
)) {
472 table
= from_bgp
->rib
[afi
][safi
];
476 for (dest
= bgp_table_top(table
); dest
;
477 dest
= bgp_route_next(dest
)) {
478 for (pi
= bgp_dest_get_bgp_path_info(dest
); pi
;
480 if (pi
->type
== ZEBRA_ROUTE_BGP
&&
482 pi
->attr
->nh_ifindex
==
484 SET_FLAG(pi
->attr
->nh_flag
,
485 BGP_ATTR_NH_REFRESH
);
490 if (from_bgp
->inst_type
!= BGP_INSTANCE_TYPE_VRF
)
493 vpn_leak_postchange(BGP_VPN_POLICY_DIR_TOVPN
, afi
,
494 bgp_default
, from_bgp
);
496 vpn_leak_postchange(BGP_VPN_POLICY_DIR_FROMVPN
, afi
,
497 bgp_default
, from_bgp
);
501 connected_free(&ifc
);
506 static int bgp_interface_nbr_address_add(ZAPI_CALLBACK_ARGS
)
508 struct nbr_connected
*ifc
= NULL
;
511 ifc
= zebra_interface_nbr_address_read(cmd
, zclient
->ibuf
, vrf_id
);
516 if (bgp_debug_zebra(ifc
->address
))
517 zlog_debug("Rx Intf neighbor add VRF %u IF %s addr %pFX",
518 vrf_id
, ifc
->ifp
->name
, ifc
->address
);
520 if (if_is_operative(ifc
->ifp
)) {
521 bgp
= bgp_lookup_by_vrf_id(vrf_id
);
523 bgp_nbr_connected_add(bgp
, ifc
);
529 static int bgp_interface_nbr_address_delete(ZAPI_CALLBACK_ARGS
)
531 struct nbr_connected
*ifc
= NULL
;
534 ifc
= zebra_interface_nbr_address_read(cmd
, zclient
->ibuf
, vrf_id
);
539 if (bgp_debug_zebra(ifc
->address
))
540 zlog_debug("Rx Intf neighbor del VRF %u IF %s addr %pFX",
541 vrf_id
, ifc
->ifp
->name
, ifc
->address
);
543 if (if_is_operative(ifc
->ifp
)) {
544 bgp
= bgp_lookup_by_vrf_id(vrf_id
);
546 bgp_nbr_connected_delete(bgp
, ifc
, 0);
549 nbr_connected_free(ifc
);
554 /* VRF update for an interface. */
555 static int bgp_interface_vrf_update(ZAPI_CALLBACK_ARGS
)
557 struct interface
*ifp
;
560 struct nbr_connected
*nc
;
561 struct listnode
*node
, *nnode
;
565 ifp
= zebra_interface_vrf_update_read(zclient
->ibuf
, vrf_id
,
570 if (BGP_DEBUG(zebra
, ZEBRA
))
571 zlog_debug("Rx Intf VRF change VRF %u IF %s NewVRF %u", vrf_id
,
572 ifp
->name
, new_vrf_id
);
574 bgp
= bgp_lookup_by_vrf_id(vrf_id
);
577 for (ALL_LIST_ELEMENTS(ifp
->connected
, node
, nnode
, c
))
578 bgp_connected_delete(bgp
, c
);
580 for (ALL_LIST_ELEMENTS(ifp
->nbr_connected
, node
, nnode
, nc
))
581 bgp_nbr_connected_delete(bgp
, nc
, 1);
583 /* Fast external-failover */
584 if (!CHECK_FLAG(bgp
->flags
, BGP_FLAG_NO_FAST_EXT_FAILOVER
)) {
585 for (ALL_LIST_ELEMENTS(bgp
->peer
, node
, nnode
, peer
)) {
586 if ((peer
->ttl
!= BGP_DEFAULT_TTL
)
588 != BGP_GTSM_HOPS_CONNECTED
))
591 if (ifp
== peer
->nexthop
.ifp
)
592 BGP_EVENT_ADD(peer
, BGP_Stop
);
597 if_update_to_new_vrf(ifp
, new_vrf_id
);
599 bgp
= bgp_lookup_by_vrf_id(new_vrf_id
);
603 for (ALL_LIST_ELEMENTS(ifp
->connected
, node
, nnode
, c
))
604 bgp_connected_add(bgp
, c
);
606 for (ALL_LIST_ELEMENTS(ifp
->nbr_connected
, node
, nnode
, nc
))
607 bgp_nbr_connected_add(bgp
, nc
);
609 hook_call(bgp_vrf_status_changed
, bgp
, ifp
);
613 /* Zebra route add and delete treatment. */
614 static int zebra_read_route(ZAPI_CALLBACK_ARGS
)
616 enum nexthop_types_t nhtype
;
617 enum blackhole_type bhtype
= BLACKHOLE_UNSPEC
;
618 struct zapi_route api
;
619 union g_addr nexthop
= {};
624 bgp
= bgp_lookup_by_vrf_id(vrf_id
);
628 if (zapi_route_decode(zclient
->ibuf
, &api
) < 0)
631 /* we completely ignore srcdest routes for now. */
632 if (CHECK_FLAG(api
.message
, ZAPI_MESSAGE_SRCPFX
))
635 /* ignore link-local address. */
636 if (api
.prefix
.family
== AF_INET6
637 && IN6_IS_ADDR_LINKLOCAL(&api
.prefix
.u
.prefix6
))
640 ifindex
= api
.nexthops
[0].ifindex
;
641 nhtype
= api
.nexthops
[0].type
;
643 /* api_nh structure has union of gate and bh_type */
644 if (nhtype
== NEXTHOP_TYPE_BLACKHOLE
) {
645 /* bh_type is only applicable if NEXTHOP_TYPE_BLACKHOLE*/
646 bhtype
= api
.nexthops
[0].bh_type
;
648 nexthop
= api
.nexthops
[0].gate
;
650 add
= (cmd
== ZEBRA_REDISTRIBUTE_ROUTE_ADD
);
653 * The ADD message is actually an UPDATE and there is no
655 * for a prior redistributed route, if any. So, perform an
657 * DEL processing for the same redistributed route from any
661 for (i
= 0; i
< ZEBRA_ROUTE_MAX
; i
++) {
663 bgp_redistribute_delete(bgp
, &api
.prefix
, i
,
667 /* Now perform the add/update. */
668 bgp_redistribute_add(bgp
, &api
.prefix
, &nexthop
, ifindex
,
669 nhtype
, bhtype
, api
.distance
, api
.metric
,
670 api
.type
, api
.instance
, api
.tag
);
672 bgp_redistribute_delete(bgp
, &api
.prefix
, api
.type
,
676 if (bgp_debug_zebra(&api
.prefix
)) {
677 char buf
[PREFIX_STRLEN
];
680 inet_ntop(api
.prefix
.family
, &nexthop
, buf
,
683 "Rx route ADD VRF %u %s[%d] %pFX nexthop %s (type %d if %u) metric %u distance %u tag %" ROUTE_TAG_PRI
,
684 vrf_id
, zebra_route_string(api
.type
),
685 api
.instance
, &api
.prefix
, buf
, nhtype
, ifindex
,
686 api
.metric
, api
.distance
, api
.tag
);
688 zlog_debug("Rx route DEL VRF %u %s[%d] %pFX", vrf_id
,
689 zebra_route_string(api
.type
), api
.instance
,
697 struct interface
*if_lookup_by_ipv4(struct in_addr
*addr
, vrf_id_t vrf_id
)
700 struct listnode
*cnode
;
701 struct interface
*ifp
;
702 struct connected
*connected
;
703 struct prefix_ipv4 p
;
706 vrf
= vrf_lookup_by_id(vrf_id
);
712 p
.prefixlen
= IPV4_MAX_BITLEN
;
714 FOR_ALL_INTERFACES (vrf
, ifp
) {
715 for (ALL_LIST_ELEMENTS_RO(ifp
->connected
, cnode
, connected
)) {
716 cp
= connected
->address
;
718 if (cp
->family
== AF_INET
)
719 if (prefix_match(cp
, (struct prefix
*)&p
))
726 struct interface
*if_lookup_by_ipv4_exact(struct in_addr
*addr
, vrf_id_t vrf_id
)
729 struct listnode
*cnode
;
730 struct interface
*ifp
;
731 struct connected
*connected
;
734 vrf
= vrf_lookup_by_id(vrf_id
);
738 FOR_ALL_INTERFACES (vrf
, ifp
) {
739 for (ALL_LIST_ELEMENTS_RO(ifp
->connected
, cnode
, connected
)) {
740 cp
= connected
->address
;
742 if (cp
->family
== AF_INET
)
743 if (IPV4_ADDR_SAME(&cp
->u
.prefix4
, addr
))
750 struct interface
*if_lookup_by_ipv6(struct in6_addr
*addr
, ifindex_t ifindex
,
754 struct listnode
*cnode
;
755 struct interface
*ifp
;
756 struct connected
*connected
;
757 struct prefix_ipv6 p
;
760 vrf
= vrf_lookup_by_id(vrf_id
);
766 p
.prefixlen
= IPV6_MAX_BITLEN
;
768 FOR_ALL_INTERFACES (vrf
, ifp
) {
769 for (ALL_LIST_ELEMENTS_RO(ifp
->connected
, cnode
, connected
)) {
770 cp
= connected
->address
;
772 if (cp
->family
== AF_INET6
)
773 if (prefix_match(cp
, (struct prefix
*)&p
)) {
774 if (IN6_IS_ADDR_LINKLOCAL(
776 if (ifindex
== ifp
->ifindex
)
786 struct interface
*if_lookup_by_ipv6_exact(struct in6_addr
*addr
,
787 ifindex_t ifindex
, vrf_id_t vrf_id
)
790 struct listnode
*cnode
;
791 struct interface
*ifp
;
792 struct connected
*connected
;
795 vrf
= vrf_lookup_by_id(vrf_id
);
799 FOR_ALL_INTERFACES (vrf
, ifp
) {
800 for (ALL_LIST_ELEMENTS_RO(ifp
->connected
, cnode
, connected
)) {
801 cp
= connected
->address
;
803 if (cp
->family
== AF_INET6
)
804 if (IPV6_ADDR_SAME(&cp
->u
.prefix6
, addr
)) {
805 if (IN6_IS_ADDR_LINKLOCAL(
807 if (ifindex
== ifp
->ifindex
)
817 static int if_get_ipv6_global(struct interface
*ifp
, struct in6_addr
*addr
)
819 struct listnode
*cnode
;
820 struct connected
*connected
;
823 for (ALL_LIST_ELEMENTS_RO(ifp
->connected
, cnode
, connected
)) {
824 cp
= connected
->address
;
826 if (cp
->family
== AF_INET6
)
827 if (!IN6_IS_ADDR_LINKLOCAL(&cp
->u
.prefix6
)) {
828 memcpy(addr
, &cp
->u
.prefix6
, IPV6_MAX_BYTELEN
);
835 static bool if_get_ipv6_local(struct interface
*ifp
, struct in6_addr
*addr
)
837 struct listnode
*cnode
;
838 struct connected
*connected
;
841 for (ALL_LIST_ELEMENTS_RO(ifp
->connected
, cnode
, connected
)) {
842 cp
= connected
->address
;
844 if (cp
->family
== AF_INET6
)
845 if (IN6_IS_ADDR_LINKLOCAL(&cp
->u
.prefix6
)) {
846 memcpy(addr
, &cp
->u
.prefix6
, IPV6_MAX_BYTELEN
);
853 static int if_get_ipv4_address(struct interface
*ifp
, struct in_addr
*addr
)
855 struct listnode
*cnode
;
856 struct connected
*connected
;
859 for (ALL_LIST_ELEMENTS_RO(ifp
->connected
, cnode
, connected
)) {
860 cp
= connected
->address
;
861 if ((cp
->family
== AF_INET
)
862 && !ipv4_martian(&(cp
->u
.prefix4
))) {
863 *addr
= cp
->u
.prefix4
;
871 bool bgp_zebra_nexthop_set(union sockunion
*local
, union sockunion
*remote
,
872 struct bgp_nexthop
*nexthop
, struct peer
*peer
)
875 struct interface
*ifp
= NULL
;
876 bool v6_ll_avail
= true;
878 memset(nexthop
, 0, sizeof(struct bgp_nexthop
));
885 if (local
->sa
.sa_family
== AF_INET
) {
886 nexthop
->v4
= local
->sin
.sin_addr
;
888 ifp
= if_lookup_by_name(peer
->update_if
,
891 ifp
= if_lookup_by_ipv4_exact(&local
->sin
.sin_addr
,
894 if (local
->sa
.sa_family
== AF_INET6
) {
895 memcpy(&nexthop
->v6_global
, &local
->sin6
.sin6_addr
, IPV6_MAX_BYTELEN
);
896 if (IN6_IS_ADDR_LINKLOCAL(&local
->sin6
.sin6_addr
)) {
897 if (peer
->conf_if
|| peer
->ifname
)
898 ifp
= if_lookup_by_name(peer
->conf_if
902 else if (peer
->update_if
)
903 ifp
= if_lookup_by_name(peer
->update_if
,
905 } else if (peer
->update_if
)
906 ifp
= if_lookup_by_name(peer
->update_if
,
909 ifp
= if_lookup_by_ipv6_exact(&local
->sin6
.sin6_addr
,
910 local
->sin6
.sin6_scope_id
,
916 * BGP views do not currently get proper data
917 * from zebra( when attached ) to be able to
918 * properly resolve nexthops, so give this
919 * instance type a pass.
921 if (peer
->bgp
->inst_type
== BGP_INSTANCE_TYPE_VIEW
)
924 * If we have no interface data but we have established
925 * some connection w/ zebra than something has gone
926 * terribly terribly wrong here, so say this failed
927 * If we do not any zebra connection then not
928 * having a ifp pointer is ok.
930 return zclient_num_connects
? false : true;
935 /* IPv4 connection, fetch and store IPv6 local address(es) if any. */
936 if (local
->sa
.sa_family
== AF_INET
) {
938 ret
= if_get_ipv6_global(ifp
, &nexthop
->v6_global
);
941 /* There is no global nexthop. Use link-local address as
943 * global and link-local nexthop. In this scenario, the
945 * for interop is that the network admin would use a
947 * specify the global IPv6 nexthop.
950 if_get_ipv6_local(ifp
, &nexthop
->v6_global
);
951 memcpy(&nexthop
->v6_local
, &nexthop
->v6_global
,
955 if_get_ipv6_local(ifp
, &nexthop
->v6_local
);
958 * If we are a v4 connection and we are not doing unnumbered
959 * not having a v6 LL address is ok
961 if (!v6_ll_avail
&& !peer
->conf_if
)
963 if (if_lookup_by_ipv4(&remote
->sin
.sin_addr
, peer
->bgp
->vrf_id
))
964 peer
->shared_network
= 1;
966 peer
->shared_network
= 0;
969 /* IPv6 connection, fetch and store IPv4 local address if any. */
970 if (local
->sa
.sa_family
== AF_INET6
) {
971 struct interface
*direct
= NULL
;
974 ret
= if_get_ipv4_address(ifp
, &nexthop
->v4
);
975 if (!ret
&& peer
->local_id
.s_addr
!= INADDR_ANY
)
976 nexthop
->v4
= peer
->local_id
;
979 if (!IN6_IS_ADDR_LINKLOCAL(&local
->sin6
.sin6_addr
)) {
980 memcpy(&nexthop
->v6_global
, &local
->sin6
.sin6_addr
,
983 /* If directly connected set link-local address. */
984 direct
= if_lookup_by_ipv6(&remote
->sin6
.sin6_addr
,
985 remote
->sin6
.sin6_scope_id
,
988 v6_ll_avail
= if_get_ipv6_local(
989 ifp
, &nexthop
->v6_local
);
991 * It's fine to not have a v6 LL when using
992 * update-source loopback/vrf
994 if (!v6_ll_avail
&& if_is_loopback(ifp
))
996 else if (!v6_ll_avail
) {
998 EC_BGP_NO_LL_ADDRESS_AVAILABLE
,
999 "Interface: %s does not have a v6 LL address associated with it, waiting until one is created for it",
1003 /* Link-local address. */
1005 ret
= if_get_ipv6_global(ifp
, &nexthop
->v6_global
);
1007 /* If there is no global address. Set link-local
1009 global. I know this break RFC specification... */
1010 /* In this scenario, the expectation for interop is that
1012 * network admin would use a route-map to specify the
1017 memcpy(&nexthop
->v6_global
,
1018 &local
->sin6
.sin6_addr
,
1020 /* Always set the link-local address */
1021 memcpy(&nexthop
->v6_local
, &local
->sin6
.sin6_addr
,
1025 if (IN6_IS_ADDR_LINKLOCAL(&local
->sin6
.sin6_addr
)
1026 || if_lookup_by_ipv6(&remote
->sin6
.sin6_addr
,
1027 remote
->sin6
.sin6_scope_id
,
1029 peer
->shared_network
= 1;
1031 peer
->shared_network
= 0;
1034 /* KAME stack specific treatment. */
1036 if (IN6_IS_ADDR_LINKLOCAL(&nexthop
->v6_global
)
1037 && IN6_LINKLOCAL_IFINDEX(nexthop
->v6_global
)) {
1038 SET_IN6_LINKLOCAL_IFINDEX(nexthop
->v6_global
, 0);
1040 if (IN6_IS_ADDR_LINKLOCAL(&nexthop
->v6_local
)
1041 && IN6_LINKLOCAL_IFINDEX(nexthop
->v6_local
)) {
1042 SET_IN6_LINKLOCAL_IFINDEX(nexthop
->v6_local
, 0);
1046 /* If we have identified the local interface, there is no error for now.
1051 static struct in6_addr
*
1052 bgp_path_info_to_ipv6_nexthop(struct bgp_path_info
*path
, ifindex_t
*ifindex
)
1054 struct in6_addr
*nexthop
= NULL
;
1056 /* Only global address nexthop exists. */
1057 if (path
->attr
->mp_nexthop_len
== BGP_ATTR_NHLEN_IPV6_GLOBAL
1058 || path
->attr
->mp_nexthop_len
== BGP_ATTR_NHLEN_VPNV6_GLOBAL
) {
1059 nexthop
= &path
->attr
->mp_nexthop_global
;
1060 if (IN6_IS_ADDR_LINKLOCAL(nexthop
))
1061 *ifindex
= path
->attr
->nh_ifindex
;
1064 /* If both global and link-local address present. */
1065 if (path
->attr
->mp_nexthop_len
== BGP_ATTR_NHLEN_IPV6_GLOBAL_AND_LL
1066 || path
->attr
->mp_nexthop_len
1067 == BGP_ATTR_NHLEN_VPNV6_GLOBAL_AND_LL
) {
1068 /* Check if route-map is set to prefer global over link-local */
1069 if (CHECK_FLAG(path
->attr
->nh_flag
,
1070 BGP_ATTR_NH_MP_PREFER_GLOBAL
)) {
1071 nexthop
= &path
->attr
->mp_nexthop_global
;
1072 if (IN6_IS_ADDR_LINKLOCAL(nexthop
))
1073 *ifindex
= path
->attr
->nh_ifindex
;
1075 /* Workaround for Cisco's nexthop bug. */
1076 if (IN6_IS_ADDR_UNSPECIFIED(
1077 &path
->attr
->mp_nexthop_global
)
1078 && path
->peer
->su_remote
1079 && path
->peer
->su_remote
->sa
.sa_family
1082 &path
->peer
->su_remote
->sin6
.sin6_addr
;
1083 if (IN6_IS_ADDR_LINKLOCAL(nexthop
))
1084 *ifindex
= path
->peer
->nexthop
.ifp
1087 nexthop
= &path
->attr
->mp_nexthop_local
;
1088 if (IN6_IS_ADDR_LINKLOCAL(nexthop
))
1089 *ifindex
= path
->attr
->nh_lla_ifindex
;
1097 static bool bgp_table_map_apply(struct route_map
*map
, const struct prefix
*p
,
1098 struct bgp_path_info
*path
)
1100 route_map_result_t ret
;
1102 ret
= route_map_apply(map
, p
, path
);
1103 bgp_attr_flush(path
->attr
);
1105 if (ret
!= RMAP_DENYMATCH
)
1108 if (bgp_debug_zebra(p
)) {
1109 if (p
->family
== AF_INET
) {
1111 "Zebra rmap deny: IPv4 route %pFX nexthop %pI4",
1112 p
, &path
->attr
->nexthop
);
1114 if (p
->family
== AF_INET6
) {
1116 struct in6_addr
*nexthop
;
1118 nexthop
= bgp_path_info_to_ipv6_nexthop(path
, &ifindex
);
1120 "Zebra rmap deny: IPv6 route %pFX nexthop %pI6",
1127 static struct thread
*bgp_tm_thread_connect
;
1128 static bool bgp_tm_status_connected
;
1129 static bool bgp_tm_chunk_obtained
;
1130 #define BGP_FLOWSPEC_TABLE_CHUNK 100000
1131 static uint32_t bgp_tm_min
, bgp_tm_max
, bgp_tm_chunk_size
;
1132 struct bgp
*bgp_tm_bgp
;
1134 static void bgp_zebra_tm_connect(struct thread
*t
)
1136 struct zclient
*zclient
;
1137 int delay
= 10, ret
= 0;
1139 zclient
= THREAD_ARG(t
);
1140 if (bgp_tm_status_connected
&& zclient
->sock
> 0)
1143 bgp_tm_status_connected
= false;
1144 ret
= tm_table_manager_connect(zclient
);
1147 zlog_info("Error connecting to table manager!");
1148 bgp_tm_status_connected
= false;
1150 if (!bgp_tm_status_connected
)
1151 zlog_debug("Connecting to table manager. Success");
1152 bgp_tm_status_connected
= true;
1153 if (!bgp_tm_chunk_obtained
) {
1154 if (bgp_zebra_get_table_range(bgp_tm_chunk_size
,
1156 &bgp_tm_max
) >= 0) {
1157 bgp_tm_chunk_obtained
= true;
1158 /* parse non installed entries */
1159 bgp_zebra_announce_table(bgp_tm_bgp
, AFI_IP
, SAFI_FLOWSPEC
);
1163 thread_add_timer(bm
->master
, bgp_zebra_tm_connect
, zclient
, delay
,
1164 &bgp_tm_thread_connect
);
1167 bool bgp_zebra_tm_chunk_obtained(void)
1169 return bgp_tm_chunk_obtained
;
1172 uint32_t bgp_zebra_tm_get_id(void)
1174 static int table_id
;
1176 if (!bgp_tm_chunk_obtained
)
1178 return bgp_tm_min
++;
1181 void bgp_zebra_init_tm_connect(struct bgp
*bgp
)
1185 /* if already set, do nothing
1187 if (bgp_tm_thread_connect
!= NULL
)
1189 bgp_tm_status_connected
= false;
1190 bgp_tm_chunk_obtained
= false;
1191 bgp_tm_min
= bgp_tm_max
= 0;
1192 bgp_tm_chunk_size
= BGP_FLOWSPEC_TABLE_CHUNK
;
1194 thread_add_timer(bm
->master
, bgp_zebra_tm_connect
, zclient
, delay
,
1195 &bgp_tm_thread_connect
);
1198 int bgp_zebra_get_table_range(uint32_t chunk_size
,
1199 uint32_t *start
, uint32_t *end
)
1203 if (!bgp_tm_status_connected
)
1205 ret
= tm_get_table_chunk(zclient
, chunk_size
, start
, end
);
1207 flog_err(EC_BGP_TABLE_CHUNK
,
1208 "BGP: Error getting table chunk %u", chunk_size
);
1211 zlog_info("BGP: Table Manager returns range from chunk %u is [%u %u]",
1212 chunk_size
, *start
, *end
);
1216 static bool update_ipv4nh_for_route_install(int nh_othervrf
, struct bgp
*nh_bgp
,
1217 struct in_addr
*nexthop
,
1218 struct attr
*attr
, bool is_evpn
,
1219 struct zapi_nexthop
*api_nh
)
1221 api_nh
->gate
.ipv4
= *nexthop
;
1222 api_nh
->vrf_id
= nh_bgp
->vrf_id
;
1224 /* Need to set fields appropriately for EVPN routes imported into
1225 * a VRF (which are programmed as onlink on l3-vni SVI) as well as
1226 * connected routes leaked into a VRF.
1228 if (attr
->nh_type
== NEXTHOP_TYPE_BLACKHOLE
) {
1229 api_nh
->type
= attr
->nh_type
;
1230 api_nh
->bh_type
= attr
->bh_type
;
1231 } else if (is_evpn
) {
1233 * If the nexthop is EVPN overlay index gateway IP,
1234 * treat the nexthop as NEXTHOP_TYPE_IPV4
1235 * Else, mark the nexthop as onlink.
1237 if (attr
->evpn_overlay
.type
== OVERLAY_INDEX_GATEWAY_IP
)
1238 api_nh
->type
= NEXTHOP_TYPE_IPV4
;
1240 api_nh
->type
= NEXTHOP_TYPE_IPV4_IFINDEX
;
1241 SET_FLAG(api_nh
->flags
, ZAPI_NEXTHOP_FLAG_EVPN
);
1242 SET_FLAG(api_nh
->flags
, ZAPI_NEXTHOP_FLAG_ONLINK
);
1243 api_nh
->ifindex
= nh_bgp
->l3vni_svi_ifindex
;
1245 } else if (nh_othervrf
&& api_nh
->gate
.ipv4
.s_addr
== INADDR_ANY
) {
1246 api_nh
->type
= NEXTHOP_TYPE_IFINDEX
;
1247 api_nh
->ifindex
= attr
->nh_ifindex
;
1249 api_nh
->type
= NEXTHOP_TYPE_IPV4
;
1254 static bool update_ipv6nh_for_route_install(int nh_othervrf
, struct bgp
*nh_bgp
,
1255 struct in6_addr
*nexthop
,
1257 struct bgp_path_info
*pi
,
1258 struct bgp_path_info
*best_pi
,
1260 struct zapi_nexthop
*api_nh
)
1265 api_nh
->vrf_id
= nh_bgp
->vrf_id
;
1267 if (attr
->nh_type
== NEXTHOP_TYPE_BLACKHOLE
) {
1268 api_nh
->type
= attr
->nh_type
;
1269 api_nh
->bh_type
= attr
->bh_type
;
1270 } else if (is_evpn
) {
1272 * If the nexthop is EVPN overlay index gateway IP,
1273 * treat the nexthop as NEXTHOP_TYPE_IPV4
1274 * Else, mark the nexthop as onlink.
1276 if (attr
->evpn_overlay
.type
== OVERLAY_INDEX_GATEWAY_IP
)
1277 api_nh
->type
= NEXTHOP_TYPE_IPV6
;
1279 api_nh
->type
= NEXTHOP_TYPE_IPV6_IFINDEX
;
1280 SET_FLAG(api_nh
->flags
, ZAPI_NEXTHOP_FLAG_EVPN
);
1281 SET_FLAG(api_nh
->flags
, ZAPI_NEXTHOP_FLAG_ONLINK
);
1282 api_nh
->ifindex
= nh_bgp
->l3vni_svi_ifindex
;
1284 } else if (nh_othervrf
) {
1285 if (IN6_IS_ADDR_UNSPECIFIED(nexthop
)) {
1286 api_nh
->type
= NEXTHOP_TYPE_IFINDEX
;
1287 api_nh
->ifindex
= attr
->nh_ifindex
;
1288 } else if (IN6_IS_ADDR_LINKLOCAL(nexthop
)) {
1291 api_nh
->type
= NEXTHOP_TYPE_IPV6_IFINDEX
;
1292 api_nh
->ifindex
= ifindex
;
1294 api_nh
->type
= NEXTHOP_TYPE_IPV6
;
1295 api_nh
->ifindex
= 0;
1298 if (IN6_IS_ADDR_LINKLOCAL(nexthop
)) {
1300 && attr
->mp_nexthop_len
1301 == BGP_ATTR_NHLEN_IPV6_GLOBAL_AND_LL
)
1302 if (pi
->peer
->nexthop
.ifp
)
1304 pi
->peer
->nexthop
.ifp
->ifindex
;
1306 if (pi
->peer
->conf_if
)
1307 ifindex
= pi
->peer
->ifp
->ifindex
;
1308 else if (pi
->peer
->ifname
)
1309 ifindex
= ifname2ifindex(
1311 pi
->peer
->bgp
->vrf_id
);
1312 else if (pi
->peer
->nexthop
.ifp
)
1314 pi
->peer
->nexthop
.ifp
->ifindex
;
1319 api_nh
->type
= NEXTHOP_TYPE_IPV6_IFINDEX
;
1320 api_nh
->ifindex
= ifindex
;
1322 api_nh
->type
= NEXTHOP_TYPE_IPV6
;
1323 api_nh
->ifindex
= 0;
1326 /* api_nh structure has union of gate and bh_type */
1327 if (nexthop
&& api_nh
->type
!= NEXTHOP_TYPE_BLACKHOLE
)
1328 api_nh
->gate
.ipv6
= *nexthop
;
1333 static bool bgp_zebra_use_nhop_weighted(struct bgp
*bgp
, struct attr
*attr
,
1334 uint64_t tot_bw
, uint32_t *nh_weight
)
1340 /* zero link-bandwidth and link-bandwidth not present are treated
1341 * as the same situation.
1344 /* the only situations should be if we're either told
1345 * to skip or use default weight.
1347 if (bgp
->lb_handling
== BGP_LINK_BW_SKIP_MISSING
)
1349 *nh_weight
= BGP_ZEBRA_DEFAULT_NHOP_WEIGHT
;
1351 tmp
= (uint64_t)bw
* 100;
1352 *nh_weight
= ((uint32_t)(tmp
/ tot_bw
));
1358 void bgp_zebra_announce(struct bgp_dest
*dest
, const struct prefix
*p
,
1359 struct bgp_path_info
*info
, struct bgp
*bgp
, afi_t afi
,
1362 struct zapi_route api
= { 0 };
1363 struct zapi_nexthop
*api_nh
;
1365 unsigned int valid_nh_count
= 0;
1366 bool allow_recursion
= false;
1369 struct bgp_path_info
*mpinfo
;
1370 struct bgp_path_info
*bpi_ultimate
;
1371 struct bgp
*bgp_orig
;
1373 struct attr local_attr
;
1374 struct bgp_path_info local_info
;
1375 struct bgp_path_info
*mpinfo_cp
= &local_info
;
1378 struct bgp_sid_info
*sid_info
;
1379 int nh_othervrf
= 0;
1380 bool nh_updated
= false;
1382 uint64_t cum_bw
= 0;
1383 uint32_t nhg_id
= 0;
1389 /* Don't try to install if we're not connected to Zebra or Zebra doesn't
1390 * know of this instance.
1392 if (!bgp_install_info_to_zebra(bgp
))
1395 if (bgp
->main_zebra_update_hold
)
1398 if (safi
== SAFI_FLOWSPEC
) {
1399 bgp_pbr_update_entry(bgp
, bgp_dest_get_prefix(dest
), info
, afi
,
1405 * vrf leaking support (will have only one nexthop)
1407 if (info
->extra
&& info
->extra
->bgp_orig
)
1410 /* Make Zebra API structure. */
1411 api
.vrf_id
= bgp
->vrf_id
;
1412 api
.type
= ZEBRA_ROUTE_BGP
;
1415 SET_FLAG(api
.message
, ZAPI_MESSAGE_NEXTHOP
);
1419 if (info
->type
== ZEBRA_ROUTE_BGP
) {
1420 bpi_ultimate
= bgp_get_imported_bpi_ultimate(info
);
1421 peer
= bpi_ultimate
->peer
;
1424 tag
= info
->attr
->tag
;
1426 if (peer
->sort
== BGP_PEER_IBGP
|| peer
->sort
== BGP_PEER_CONFED
1427 || info
->sub_type
== BGP_ROUTE_AGGREGATE
) {
1428 SET_FLAG(api
.flags
, ZEBRA_FLAG_IBGP
);
1429 SET_FLAG(api
.flags
, ZEBRA_FLAG_ALLOW_RECURSION
);
1432 if ((peer
->sort
== BGP_PEER_EBGP
&& peer
->ttl
!= BGP_DEFAULT_TTL
)
1433 || CHECK_FLAG(peer
->flags
, PEER_FLAG_DISABLE_CONNECTED_CHECK
)
1434 || CHECK_FLAG(bgp
->flags
, BGP_FLAG_DISABLE_NH_CONNECTED_CHK
))
1436 allow_recursion
= true;
1438 if (info
->attr
->rmap_table_id
) {
1439 SET_FLAG(api
.message
, ZAPI_MESSAGE_TABLEID
);
1440 api
.tableid
= info
->attr
->rmap_table_id
;
1443 if (CHECK_FLAG(info
->attr
->flag
, ATTR_FLAG_BIT(BGP_ATTR_SRTE_COLOR
)))
1444 SET_FLAG(api
.message
, ZAPI_MESSAGE_SRTE
);
1446 /* Metric is currently based on the best-path only */
1447 metric
= info
->attr
->med
;
1449 /* Determine if we're doing weighted ECMP or not */
1450 do_wt_ecmp
= bgp_path_info_mpath_chkwtd(bgp
, info
);
1452 cum_bw
= bgp_path_info_mpath_cumbw(info
);
1454 /* EVPN MAC-IP routes are installed with a L3 NHG id */
1455 if (bgp_evpn_path_es_use_nhg(bgp
, info
, &nhg_id
)) {
1459 SET_FLAG(api
.message
, ZAPI_MESSAGE_NHG
);
1464 for (; mpinfo
; mpinfo
= bgp_path_info_mpath_next(mpinfo
)) {
1468 if (valid_nh_count
>= multipath_num
)
1471 *mpinfo_cp
= *mpinfo
;
1474 /* Get nexthop address-family */
1475 if (p
->family
== AF_INET
&&
1476 !BGP_ATTR_MP_NEXTHOP_LEN_IP6(mpinfo_cp
->attr
))
1477 nh_family
= AF_INET
;
1478 else if (p
->family
== AF_INET6
||
1479 (p
->family
== AF_INET
&&
1480 BGP_ATTR_MP_NEXTHOP_LEN_IP6(mpinfo_cp
->attr
)))
1481 nh_family
= AF_INET6
;
1485 /* If processing for weighted ECMP, determine the next hop's
1486 * weight. Based on user setting, we may skip the next hop
1487 * in some situations.
1490 if (!bgp_zebra_use_nhop_weighted(bgp
, mpinfo
->attr
,
1491 cum_bw
, &nh_weight
))
1494 api_nh
= &api
.nexthops
[valid_nh_count
];
1496 if (CHECK_FLAG(info
->attr
->flag
,
1497 ATTR_FLAG_BIT(BGP_ATTR_SRTE_COLOR
)))
1498 api_nh
->srte_color
= info
->attr
->srte_color
;
1500 if (bgp_debug_zebra(&api
.prefix
)) {
1501 if (mpinfo
->extra
) {
1502 zlog_debug("%s: p=%pFX, bgp_is_valid_label: %d",
1505 &mpinfo
->extra
->label
[0]));
1508 "%s: p=%pFX, extra is NULL, no label",
1513 if (bgp
->table_map
[afi
][safi
].name
) {
1514 /* Copy info and attributes, so the route-map
1515 apply doesn't modify the BGP route info. */
1516 local_attr
= *mpinfo
->attr
;
1517 mpinfo_cp
->attr
= &local_attr
;
1518 if (!bgp_table_map_apply(bgp
->table_map
[afi
][safi
].map
,
1522 /* metric/tag is only allowed to be
1523 * overridden on 1st nexthop */
1524 if (mpinfo
== info
) {
1525 metric
= mpinfo_cp
->attr
->med
;
1526 tag
= mpinfo_cp
->attr
->tag
;
1530 BGP_ORIGINAL_UPDATE(bgp_orig
, mpinfo
, bgp
);
1532 if (nh_family
== AF_INET
) {
1533 is_evpn
= is_route_parent_evpn(mpinfo
);
1535 nh_updated
= update_ipv4nh_for_route_install(
1536 nh_othervrf
, bgp_orig
,
1537 &mpinfo_cp
->attr
->nexthop
, mpinfo_cp
->attr
,
1540 ifindex_t ifindex
= IFINDEX_INTERNAL
;
1541 struct in6_addr
*nexthop
;
1543 nexthop
= bgp_path_info_to_ipv6_nexthop(mpinfo_cp
,
1546 is_evpn
= is_route_parent_evpn(mpinfo
);
1549 nh_updated
= update_ipv4nh_for_route_install(
1550 nh_othervrf
, bgp_orig
,
1551 &mpinfo_cp
->attr
->nexthop
,
1552 mpinfo_cp
->attr
, is_evpn
, api_nh
);
1554 nh_updated
= update_ipv6nh_for_route_install(
1555 nh_othervrf
, bgp_orig
, nexthop
, ifindex
,
1556 mpinfo
, info
, is_evpn
, api_nh
);
1559 /* Did we get proper nexthop info to update zebra? */
1563 /* Allow recursion if it is a multipath group with both
1564 * eBGP and iBGP paths.
1566 if (!allow_recursion
1567 && CHECK_FLAG(bgp
->flags
, BGP_FLAG_PEERTYPE_MULTIPATH_RELAX
)
1568 && (mpinfo
->peer
->sort
== BGP_PEER_IBGP
1569 || mpinfo
->peer
->sort
== BGP_PEER_CONFED
))
1570 allow_recursion
= true;
1572 if (mpinfo
->extra
&&
1573 bgp_is_valid_label(&mpinfo
->extra
->label
[0]) &&
1574 !CHECK_FLAG(api_nh
->flags
, ZAPI_NEXTHOP_FLAG_EVPN
)) {
1575 mpls_lse_decode(mpinfo
->extra
->label
[0], &label
, &ttl
,
1578 SET_FLAG(api_nh
->flags
, ZAPI_NEXTHOP_FLAG_LABEL
);
1580 api_nh
->label_num
= 1;
1581 api_nh
->labels
[0] = label
;
1585 && mpinfo
->attr
->evpn_overlay
.type
1586 != OVERLAY_INDEX_GATEWAY_IP
)
1587 memcpy(&api_nh
->rmac
, &(mpinfo
->attr
->rmac
),
1588 sizeof(struct ethaddr
));
1590 api_nh
->weight
= nh_weight
;
1592 if (mpinfo
->extra
&&
1593 bgp_is_valid_label(&mpinfo
->extra
->label
[0]) &&
1594 !sid_zero(&mpinfo
->extra
->sid
[0].sid
) &&
1595 !CHECK_FLAG(api_nh
->flags
, ZAPI_NEXTHOP_FLAG_EVPN
)) {
1596 sid_info
= &mpinfo
->extra
->sid
[0];
1598 memcpy(&api_nh
->seg6_segs
, &sid_info
->sid
,
1599 sizeof(api_nh
->seg6_segs
));
1601 if (sid_info
->transposition_len
!= 0) {
1602 mpls_lse_decode(mpinfo
->extra
->label
[0], &label
,
1605 if (label
< MPLS_LABEL_UNRESERVED_MIN
) {
1606 if (bgp_debug_zebra(&api
.prefix
))
1608 "skip invalid SRv6 routes: transposition scheme is used, but label is too small");
1612 transpose_sid(&api_nh
->seg6_segs
, label
,
1613 sid_info
->transposition_offset
,
1614 sid_info
->transposition_len
);
1617 SET_FLAG(api_nh
->flags
, ZAPI_NEXTHOP_FLAG_SEG6
);
1623 is_add
= (valid_nh_count
|| nhg_id
) ? true : false;
1625 if (is_add
&& CHECK_FLAG(bm
->flags
, BM_FLAG_SEND_EXTRA_DATA_TO_ZEBRA
)) {
1626 struct bgp_zebra_opaque bzo
= {};
1627 const char *reason
=
1628 bgp_path_selection_reason2str(dest
->reason
);
1630 strlcpy(bzo
.aspath
, info
->attr
->aspath
->str
,
1631 sizeof(bzo
.aspath
));
1633 if (info
->attr
->flag
& ATTR_FLAG_BIT(BGP_ATTR_COMMUNITIES
))
1634 strlcpy(bzo
.community
,
1635 bgp_attr_get_community(info
->attr
)->str
,
1636 sizeof(bzo
.community
));
1638 if (info
->attr
->flag
1639 & ATTR_FLAG_BIT(BGP_ATTR_LARGE_COMMUNITIES
))
1640 strlcpy(bzo
.lcommunity
,
1641 bgp_attr_get_lcommunity(info
->attr
)->str
,
1642 sizeof(bzo
.lcommunity
));
1644 strlcpy(bzo
.selection_reason
, reason
,
1645 sizeof(bzo
.selection_reason
));
1647 SET_FLAG(api
.message
, ZAPI_MESSAGE_OPAQUE
);
1648 api
.opaque
.length
= MIN(sizeof(struct bgp_zebra_opaque
),
1649 ZAPI_MESSAGE_OPAQUE_LENGTH
);
1650 memcpy(api
.opaque
.data
, &bzo
, api
.opaque
.length
);
1653 if (allow_recursion
)
1654 SET_FLAG(api
.flags
, ZEBRA_FLAG_ALLOW_RECURSION
);
1657 * When we create an aggregate route we must also
1658 * install a Null0 route in the RIB, so overwrite
1659 * what was written into api with a blackhole route
1661 if (info
->sub_type
== BGP_ROUTE_AGGREGATE
)
1662 zapi_route_set_blackhole(&api
, BLACKHOLE_NULL
);
1664 api
.nexthop_num
= valid_nh_count
;
1666 SET_FLAG(api
.message
, ZAPI_MESSAGE_METRIC
);
1667 api
.metric
= metric
;
1670 SET_FLAG(api
.message
, ZAPI_MESSAGE_TAG
);
1674 distance
= bgp_distance_apply(p
, info
, afi
, safi
, bgp
);
1676 SET_FLAG(api
.message
, ZAPI_MESSAGE_DISTANCE
);
1677 api
.distance
= distance
;
1680 if (bgp_debug_zebra(p
)) {
1681 char nh_buf
[INET6_ADDRSTRLEN
];
1682 char eth_buf
[ETHER_ADDR_STRLEN
+ 7] = {'\0'};
1683 char buf1
[ETHER_ADDR_STRLEN
];
1690 "Tx route %s VRF %u %pFX metric %u tag %" ROUTE_TAG_PRI
1692 is_add
? "add" : "delete", bgp
->vrf_id
, &api
.prefix
,
1693 api
.metric
, api
.tag
, api
.nexthop_num
, nhg_id
);
1694 for (i
= 0; i
< api
.nexthop_num
; i
++) {
1695 api_nh
= &api
.nexthops
[i
];
1697 switch (api_nh
->type
) {
1698 case NEXTHOP_TYPE_IFINDEX
:
1701 case NEXTHOP_TYPE_IPV4
:
1702 case NEXTHOP_TYPE_IPV4_IFINDEX
:
1703 nh_family
= AF_INET
;
1704 inet_ntop(nh_family
, &api_nh
->gate
, nh_buf
,
1707 case NEXTHOP_TYPE_IPV6
:
1708 case NEXTHOP_TYPE_IPV6_IFINDEX
:
1709 nh_family
= AF_INET6
;
1710 inet_ntop(nh_family
, &api_nh
->gate
, nh_buf
,
1713 case NEXTHOP_TYPE_BLACKHOLE
:
1714 strlcpy(nh_buf
, "blackhole", sizeof(nh_buf
));
1717 /* Note: add new nexthop case */
1722 label_buf
[0] = '\0';
1725 if (CHECK_FLAG(api_nh
->flags
,
1726 ZAPI_NEXTHOP_FLAG_LABEL
) &&
1727 !CHECK_FLAG(api_nh
->flags
, ZAPI_NEXTHOP_FLAG_EVPN
))
1728 snprintf(label_buf
, sizeof(label_buf
),
1729 "label %u", api_nh
->labels
[0]);
1730 if (CHECK_FLAG(api_nh
->flags
, ZAPI_NEXTHOP_FLAG_SEG6
) &&
1731 !CHECK_FLAG(api_nh
->flags
,
1732 ZAPI_NEXTHOP_FLAG_EVPN
)) {
1733 inet_ntop(AF_INET6
, &api_nh
->seg6_segs
,
1734 sid_buf
, sizeof(sid_buf
));
1735 snprintf(segs_buf
, sizeof(segs_buf
), "segs %s",
1738 if (CHECK_FLAG(api_nh
->flags
, ZAPI_NEXTHOP_FLAG_EVPN
) &&
1739 !is_zero_mac(&api_nh
->rmac
))
1740 snprintf(eth_buf
, sizeof(eth_buf
), " RMAC %s",
1741 prefix_mac2str(&api_nh
->rmac
,
1742 buf1
, sizeof(buf1
)));
1743 zlog_debug(" nhop [%d]: %s if %u VRF %u wt %u %s %s %s",
1744 i
+ 1, nh_buf
, api_nh
->ifindex
,
1745 api_nh
->vrf_id
, api_nh
->weight
,
1746 label_buf
, segs_buf
, eth_buf
);
1749 int recursion_flag
= 0;
1751 if (CHECK_FLAG(api
.flags
, ZEBRA_FLAG_ALLOW_RECURSION
))
1754 zlog_debug("%s: %pFX: announcing to zebra (recursion %sset)",
1755 __func__
, p
, (recursion_flag
? "" : "NOT "));
1757 zclient_route_send(is_add
? ZEBRA_ROUTE_ADD
: ZEBRA_ROUTE_DELETE
,
1761 /* Announce all routes of a table to zebra */
1762 void bgp_zebra_announce_table(struct bgp
*bgp
, afi_t afi
, safi_t safi
)
1764 struct bgp_dest
*dest
;
1765 struct bgp_table
*table
;
1766 struct bgp_path_info
*pi
;
1768 /* Don't try to install if we're not connected to Zebra or Zebra doesn't
1769 * know of this instance.
1771 if (!bgp_install_info_to_zebra(bgp
))
1774 table
= bgp
->rib
[afi
][safi
];
1778 for (dest
= bgp_table_top(table
); dest
; dest
= bgp_route_next(dest
))
1779 for (pi
= bgp_dest_get_bgp_path_info(dest
); pi
; pi
= pi
->next
)
1780 if (CHECK_FLAG(pi
->flags
, BGP_PATH_SELECTED
) &&
1782 (pi
->type
== ZEBRA_ROUTE_BGP
1783 && (pi
->sub_type
== BGP_ROUTE_NORMAL
1784 || pi
->sub_type
== BGP_ROUTE_IMPORTED
)))
1786 bgp_zebra_announce(dest
,
1787 bgp_dest_get_prefix(dest
),
1788 pi
, bgp
, afi
, safi
);
1791 /* Announce routes of any bgp subtype of a table to zebra */
1792 void bgp_zebra_announce_table_all_subtypes(struct bgp
*bgp
, afi_t afi
,
1795 struct bgp_dest
*dest
;
1796 struct bgp_table
*table
;
1797 struct bgp_path_info
*pi
;
1799 if (!bgp_install_info_to_zebra(bgp
))
1802 table
= bgp
->rib
[afi
][safi
];
1806 for (dest
= bgp_table_top(table
); dest
; dest
= bgp_route_next(dest
))
1807 for (pi
= bgp_dest_get_bgp_path_info(dest
); pi
; pi
= pi
->next
)
1808 if (CHECK_FLAG(pi
->flags
, BGP_PATH_SELECTED
) &&
1809 pi
->type
== ZEBRA_ROUTE_BGP
)
1810 bgp_zebra_announce(dest
,
1811 bgp_dest_get_prefix(dest
),
1812 pi
, bgp
, afi
, safi
);
1815 void bgp_zebra_withdraw(const struct prefix
*p
, struct bgp_path_info
*info
,
1816 struct bgp
*bgp
, safi_t safi
)
1818 struct zapi_route api
;
1821 /* Don't try to install if we're not connected to Zebra or Zebra doesn't
1822 * know of this instance.
1824 if (!bgp_install_info_to_zebra(bgp
))
1827 if (safi
== SAFI_FLOWSPEC
) {
1829 bgp_pbr_update_entry(peer
->bgp
, p
, info
, AFI_IP
, safi
, false);
1833 memset(&api
, 0, sizeof(api
));
1834 api
.vrf_id
= bgp
->vrf_id
;
1835 api
.type
= ZEBRA_ROUTE_BGP
;
1839 if (info
->attr
->rmap_table_id
) {
1840 SET_FLAG(api
.message
, ZAPI_MESSAGE_TABLEID
);
1841 api
.tableid
= info
->attr
->rmap_table_id
;
1844 if (bgp_debug_zebra(p
))
1845 zlog_debug("Tx route delete VRF %u %pFX", bgp
->vrf_id
,
1848 zclient_route_send(ZEBRA_ROUTE_DELETE
, zclient
, &api
);
1851 /* Withdraw all entries in a BGP instances RIB table from Zebra */
1852 void bgp_zebra_withdraw_table_all_subtypes(struct bgp
*bgp
, afi_t afi
, safi_t safi
)
1854 struct bgp_dest
*dest
;
1855 struct bgp_table
*table
;
1856 struct bgp_path_info
*pi
;
1858 if (!bgp_install_info_to_zebra(bgp
))
1861 table
= bgp
->rib
[afi
][safi
];
1865 for (dest
= bgp_table_top(table
); dest
; dest
= bgp_route_next(dest
)) {
1866 for (pi
= bgp_dest_get_bgp_path_info(dest
); pi
; pi
= pi
->next
) {
1867 if (CHECK_FLAG(pi
->flags
, BGP_PATH_SELECTED
)
1868 && (pi
->type
== ZEBRA_ROUTE_BGP
))
1869 bgp_zebra_withdraw(bgp_dest_get_prefix(dest
),
1875 struct bgp_redist
*bgp_redist_lookup(struct bgp
*bgp
, afi_t afi
, uint8_t type
,
1876 unsigned short instance
)
1878 struct list
*red_list
;
1879 struct listnode
*node
;
1880 struct bgp_redist
*red
;
1882 red_list
= bgp
->redist
[afi
][type
];
1886 for (ALL_LIST_ELEMENTS_RO(red_list
, node
, red
))
1887 if (red
->instance
== instance
)
1893 struct bgp_redist
*bgp_redist_add(struct bgp
*bgp
, afi_t afi
, uint8_t type
,
1894 unsigned short instance
)
1896 struct list
*red_list
;
1897 struct bgp_redist
*red
;
1899 red
= bgp_redist_lookup(bgp
, afi
, type
, instance
);
1903 if (!bgp
->redist
[afi
][type
])
1904 bgp
->redist
[afi
][type
] = list_new();
1906 red_list
= bgp
->redist
[afi
][type
];
1907 red
= XCALLOC(MTYPE_BGP_REDIST
, sizeof(struct bgp_redist
));
1908 red
->instance
= instance
;
1910 listnode_add(red_list
, red
);
1915 static void bgp_redist_del(struct bgp
*bgp
, afi_t afi
, uint8_t type
,
1916 unsigned short instance
)
1918 struct bgp_redist
*red
;
1920 red
= bgp_redist_lookup(bgp
, afi
, type
, instance
);
1923 listnode_delete(bgp
->redist
[afi
][type
], red
);
1924 XFREE(MTYPE_BGP_REDIST
, red
);
1925 if (!bgp
->redist
[afi
][type
]->count
)
1926 list_delete(&bgp
->redist
[afi
][type
]);
1930 /* Other routes redistribution into BGP. */
1931 int bgp_redistribute_set(struct bgp
*bgp
, afi_t afi
, int type
,
1932 unsigned short instance
, bool changed
)
1934 /* If redistribute options are changed call
1935 * bgp_redistribute_unreg() to reset the option and withdraw
1939 bgp_redistribute_unreg(bgp
, afi
, type
, instance
);
1941 /* Return if already redistribute flag is set. */
1943 if (redist_check_instance(&zclient
->mi_redist
[afi
][type
],
1947 redist_add_instance(&zclient
->mi_redist
[afi
][type
], instance
);
1949 if (vrf_bitmap_check(zclient
->redist
[afi
][type
], bgp
->vrf_id
))
1952 #ifdef ENABLE_BGP_VNC
1953 if (EVPN_ENABLED(bgp
) && type
== ZEBRA_ROUTE_VNC_DIRECT
) {
1954 vnc_export_bgp_enable(
1955 bgp
, afi
); /* only enables if mode bits cfg'd */
1959 vrf_bitmap_set(zclient
->redist
[afi
][type
], bgp
->vrf_id
);
1963 * Don't try to register if we're not connected to Zebra or Zebra
1964 * doesn't know of this instance.
1966 * When we come up later well resend if needed.
1968 if (!bgp_install_info_to_zebra(bgp
))
1971 if (BGP_DEBUG(zebra
, ZEBRA
))
1972 zlog_debug("Tx redistribute add VRF %u afi %d %s %d",
1973 bgp
->vrf_id
, afi
, zebra_route_string(type
),
1976 /* Send distribute add message to zebra. */
1977 zebra_redistribute_send(ZEBRA_REDISTRIBUTE_ADD
, zclient
, afi
, type
,
1978 instance
, bgp
->vrf_id
);
1983 int bgp_redistribute_resend(struct bgp
*bgp
, afi_t afi
, int type
,
1984 unsigned short instance
)
1986 /* Don't try to send if we're not connected to Zebra or Zebra doesn't
1987 * know of this instance.
1989 if (!bgp_install_info_to_zebra(bgp
))
1992 if (BGP_DEBUG(zebra
, ZEBRA
))
1993 zlog_debug("Tx redistribute del/add VRF %u afi %d %s %d",
1994 bgp
->vrf_id
, afi
, zebra_route_string(type
),
1997 /* Send distribute add message to zebra. */
1998 zebra_redistribute_send(ZEBRA_REDISTRIBUTE_DELETE
, zclient
, afi
, type
,
1999 instance
, bgp
->vrf_id
);
2000 zebra_redistribute_send(ZEBRA_REDISTRIBUTE_ADD
, zclient
, afi
, type
,
2001 instance
, bgp
->vrf_id
);
2006 /* Redistribute with route-map specification. */
2007 bool bgp_redistribute_rmap_set(struct bgp_redist
*red
, const char *name
,
2008 struct route_map
*route_map
)
2010 if (red
->rmap
.name
&& (strcmp(red
->rmap
.name
, name
) == 0))
2013 XFREE(MTYPE_ROUTE_MAP_NAME
, red
->rmap
.name
);
2014 /* Decrement the count for existing routemap and
2015 * increment the count for new route map.
2017 route_map_counter_decrement(red
->rmap
.map
);
2018 red
->rmap
.name
= XSTRDUP(MTYPE_ROUTE_MAP_NAME
, name
);
2019 red
->rmap
.map
= route_map
;
2020 route_map_counter_increment(red
->rmap
.map
);
2025 /* Redistribute with metric specification. */
2026 bool bgp_redistribute_metric_set(struct bgp
*bgp
, struct bgp_redist
*red
,
2027 afi_t afi
, int type
, uint32_t metric
)
2029 struct bgp_dest
*dest
;
2030 struct bgp_path_info
*pi
;
2032 if (red
->redist_metric_flag
&& red
->redist_metric
== metric
)
2035 red
->redist_metric_flag
= 1;
2036 red
->redist_metric
= metric
;
2038 for (dest
= bgp_table_top(bgp
->rib
[afi
][SAFI_UNICAST
]); dest
;
2039 dest
= bgp_route_next(dest
)) {
2040 for (pi
= bgp_dest_get_bgp_path_info(dest
); pi
; pi
= pi
->next
) {
2041 if (pi
->sub_type
== BGP_ROUTE_REDISTRIBUTE
2043 && pi
->instance
== red
->instance
) {
2044 struct attr
*old_attr
;
2045 struct attr new_attr
;
2047 new_attr
= *pi
->attr
;
2048 new_attr
.med
= red
->redist_metric
;
2049 old_attr
= pi
->attr
;
2050 pi
->attr
= bgp_attr_intern(&new_attr
);
2051 bgp_attr_unintern(&old_attr
);
2053 bgp_path_info_set_flag(dest
, pi
,
2054 BGP_PATH_ATTR_CHANGED
);
2055 bgp_process(bgp
, dest
, afi
, SAFI_UNICAST
);
2063 /* Unset redistribution. */
2064 int bgp_redistribute_unreg(struct bgp
*bgp
, afi_t afi
, int type
,
2065 unsigned short instance
)
2067 struct bgp_redist
*red
;
2069 red
= bgp_redist_lookup(bgp
, afi
, type
, instance
);
2073 /* Return if zebra connection is disabled. */
2075 if (!redist_check_instance(&zclient
->mi_redist
[afi
][type
],
2078 redist_del_instance(&zclient
->mi_redist
[afi
][type
], instance
);
2080 if (!vrf_bitmap_check(zclient
->redist
[afi
][type
], bgp
->vrf_id
))
2082 vrf_bitmap_unset(zclient
->redist
[afi
][type
], bgp
->vrf_id
);
2085 if (bgp_install_info_to_zebra(bgp
)) {
2086 /* Send distribute delete message to zebra. */
2087 if (BGP_DEBUG(zebra
, ZEBRA
))
2088 zlog_debug("Tx redistribute del VRF %u afi %d %s %d",
2089 bgp
->vrf_id
, afi
, zebra_route_string(type
),
2091 zebra_redistribute_send(ZEBRA_REDISTRIBUTE_DELETE
, zclient
, afi
,
2092 type
, instance
, bgp
->vrf_id
);
2095 /* Withdraw redistributed routes from current BGP's routing table. */
2096 bgp_redistribute_withdraw(bgp
, afi
, type
, instance
);
2101 /* Unset redistribution. */
2102 int bgp_redistribute_unset(struct bgp
*bgp
, afi_t afi
, int type
,
2103 unsigned short instance
)
2105 struct bgp_redist
*red
;
2108 * vnc and vpn->vrf checks must be before red check because
2109 * they operate within bgpd irrespective of zebra connection
2110 * status. red lookup fails if there is no zebra connection.
2112 #ifdef ENABLE_BGP_VNC
2113 if (EVPN_ENABLED(bgp
) && type
== ZEBRA_ROUTE_VNC_DIRECT
) {
2114 vnc_export_bgp_disable(bgp
, afi
);
2118 red
= bgp_redist_lookup(bgp
, afi
, type
, instance
);
2122 bgp_redistribute_unreg(bgp
, afi
, type
, instance
);
2124 /* Unset route-map. */
2125 XFREE(MTYPE_ROUTE_MAP_NAME
, red
->rmap
.name
);
2126 route_map_counter_decrement(red
->rmap
.map
);
2127 red
->rmap
.map
= NULL
;
2130 red
->redist_metric_flag
= 0;
2131 red
->redist_metric
= 0;
2133 bgp_redist_del(bgp
, afi
, type
, instance
);
2138 void bgp_redistribute_redo(struct bgp
*bgp
)
2142 struct list
*red_list
;
2143 struct listnode
*node
;
2144 struct bgp_redist
*red
;
2146 for (afi
= AFI_IP
; afi
< AFI_MAX
; afi
++) {
2147 for (i
= 0; i
< ZEBRA_ROUTE_MAX
; i
++) {
2149 red_list
= bgp
->redist
[afi
][i
];
2153 for (ALL_LIST_ELEMENTS_RO(red_list
, node
, red
)) {
2154 bgp_redistribute_resend(bgp
, afi
, i
,
2161 void bgp_zclient_reset(void)
2163 zclient_reset(zclient
);
2166 /* Register this instance with Zebra. Invoked upon connect (for
2167 * default instance) and when other VRFs are learnt (or created and
2170 void bgp_zebra_instance_register(struct bgp
*bgp
)
2172 /* Don't try to register if we're not connected to Zebra */
2173 if (!zclient
|| zclient
->sock
< 0)
2176 if (BGP_DEBUG(zebra
, ZEBRA
))
2177 zlog_debug("Registering VRF %u", bgp
->vrf_id
);
2179 /* Register for router-id, interfaces, redistributed routes. */
2180 zclient_send_reg_requests(zclient
, bgp
->vrf_id
);
2182 /* For EVPN instance, register to learn about VNIs, if appropriate. */
2183 if (bgp
->advertise_all_vni
)
2184 bgp_zebra_advertise_all_vni(bgp
, 1);
2186 bgp_nht_register_nexthops(bgp
);
2189 /* Deregister this instance with Zebra. Invoked upon the instance
2190 * being deleted (default or VRF) and it is already registered.
2192 void bgp_zebra_instance_deregister(struct bgp
*bgp
)
2194 /* Don't try to deregister if we're not connected to Zebra */
2195 if (zclient
->sock
< 0)
2198 if (BGP_DEBUG(zebra
, ZEBRA
))
2199 zlog_debug("Deregistering VRF %u", bgp
->vrf_id
);
2201 /* For EVPN instance, unregister learning about VNIs, if appropriate. */
2202 if (bgp
->advertise_all_vni
)
2203 bgp_zebra_advertise_all_vni(bgp
, 0);
2205 /* Deregister for router-id, interfaces, redistributed routes. */
2206 zclient_send_dereg_requests(zclient
, bgp
->vrf_id
);
2209 void bgp_zebra_initiate_radv(struct bgp
*bgp
, struct peer
*peer
)
2211 uint32_t ra_interval
= BGP_UNNUM_DEFAULT_RA_INTERVAL
;
2213 /* Don't try to initiate if we're not connected to Zebra */
2214 if (zclient
->sock
< 0)
2217 if (BGP_DEBUG(zebra
, ZEBRA
))
2218 zlog_debug("%u: Initiating RA for peer %s", bgp
->vrf_id
,
2222 * If unnumbered peer (peer->ifp) call thru zapi to start RAs.
2223 * If we don't have an ifp pointer, call function to find the
2224 * ifps for a numbered enhe peer to turn RAs on.
2226 peer
->ifp
? zclient_send_interface_radv_req(zclient
, bgp
->vrf_id
,
2227 peer
->ifp
, 1, ra_interval
)
2228 : bgp_nht_reg_enhe_cap_intfs(peer
);
2231 void bgp_zebra_terminate_radv(struct bgp
*bgp
, struct peer
*peer
)
2233 /* Don't try to terminate if we're not connected to Zebra */
2234 if (zclient
->sock
< 0)
2237 if (BGP_DEBUG(zebra
, ZEBRA
))
2238 zlog_debug("%u: Terminating RA for peer %s", bgp
->vrf_id
,
2242 * If unnumbered peer (peer->ifp) call thru zapi to stop RAs.
2243 * If we don't have an ifp pointer, call function to find the
2244 * ifps for a numbered enhe peer to turn RAs off.
2246 peer
->ifp
? zclient_send_interface_radv_req(zclient
, bgp
->vrf_id
,
2248 : bgp_nht_dereg_enhe_cap_intfs(peer
);
2251 int bgp_zebra_advertise_subnet(struct bgp
*bgp
, int advertise
, vni_t vni
)
2253 struct stream
*s
= NULL
;
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
)) {
2261 if (BGP_DEBUG(zebra
, ZEBRA
))
2263 "%s: No zebra instance to talk to, cannot advertise subnet",
2271 zclient_create_header(s
, ZEBRA_ADVERTISE_SUBNET
, bgp
->vrf_id
);
2272 stream_putc(s
, advertise
);
2273 stream_put3(s
, vni
);
2274 stream_putw_at(s
, 0, stream_get_endp(s
));
2276 return zclient_send_message(zclient
);
2279 int bgp_zebra_advertise_svi_macip(struct bgp
*bgp
, int advertise
, vni_t vni
)
2281 struct stream
*s
= NULL
;
2284 if (!zclient
|| zclient
->sock
< 0)
2287 /* Don't try to register if Zebra doesn't know of this instance. */
2288 if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp
))
2294 zclient_create_header(s
, ZEBRA_ADVERTISE_SVI_MACIP
, bgp
->vrf_id
);
2295 stream_putc(s
, advertise
);
2296 stream_putl(s
, vni
);
2297 stream_putw_at(s
, 0, stream_get_endp(s
));
2299 return zclient_send_message(zclient
);
2302 int bgp_zebra_advertise_gw_macip(struct bgp
*bgp
, int advertise
, vni_t vni
)
2304 struct stream
*s
= NULL
;
2307 if (!zclient
|| zclient
->sock
< 0)
2310 /* Don't try to register if Zebra doesn't know of this instance. */
2311 if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp
)) {
2312 if (BGP_DEBUG(zebra
, ZEBRA
))
2314 "%s: No zebra instance to talk to, not installing gw_macip",
2322 zclient_create_header(s
, ZEBRA_ADVERTISE_DEFAULT_GW
, bgp
->vrf_id
);
2323 stream_putc(s
, advertise
);
2324 stream_putl(s
, vni
);
2325 stream_putw_at(s
, 0, stream_get_endp(s
));
2327 return zclient_send_message(zclient
);
2330 int bgp_zebra_vxlan_flood_control(struct bgp
*bgp
,
2331 enum vxlan_flood_control flood_ctrl
)
2336 if (!zclient
|| zclient
->sock
< 0)
2339 /* Don't try to register if Zebra doesn't know of this instance. */
2340 if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp
)) {
2341 if (BGP_DEBUG(zebra
, ZEBRA
))
2343 "%s: No zebra instance to talk to, not installing all vni",
2351 zclient_create_header(s
, ZEBRA_VXLAN_FLOOD_CONTROL
, bgp
->vrf_id
);
2352 stream_putc(s
, flood_ctrl
);
2353 stream_putw_at(s
, 0, stream_get_endp(s
));
2355 return zclient_send_message(zclient
);
2358 int bgp_zebra_advertise_all_vni(struct bgp
*bgp
, int advertise
)
2363 if (!zclient
|| zclient
->sock
< 0)
2366 /* Don't try to register if Zebra doesn't know of this instance. */
2367 if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp
))
2373 zclient_create_header(s
, ZEBRA_ADVERTISE_ALL_VNI
, bgp
->vrf_id
);
2374 stream_putc(s
, advertise
);
2375 /* Also inform current BUM handling setting. This is really
2376 * relevant only when 'advertise' is set.
2378 stream_putc(s
, bgp
->vxlan_flood_ctrl
);
2379 stream_putw_at(s
, 0, stream_get_endp(s
));
2381 return zclient_send_message(zclient
);
2384 int bgp_zebra_dup_addr_detection(struct bgp
*bgp
)
2389 if (!zclient
|| zclient
->sock
< 0)
2392 /* Don't try to register if Zebra doesn't know of this instance. */
2393 if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp
))
2396 if (BGP_DEBUG(zebra
, ZEBRA
))
2397 zlog_debug("dup addr detect %s max_moves %u time %u freeze %s freeze_time %u",
2398 bgp
->evpn_info
->dup_addr_detect
?
2399 "enable" : "disable",
2400 bgp
->evpn_info
->dad_max_moves
,
2401 bgp
->evpn_info
->dad_time
,
2402 bgp
->evpn_info
->dad_freeze
?
2403 "enable" : "disable",
2404 bgp
->evpn_info
->dad_freeze_time
);
2408 zclient_create_header(s
, ZEBRA_DUPLICATE_ADDR_DETECTION
,
2410 stream_putl(s
, bgp
->evpn_info
->dup_addr_detect
);
2411 stream_putl(s
, bgp
->evpn_info
->dad_time
);
2412 stream_putl(s
, bgp
->evpn_info
->dad_max_moves
);
2413 stream_putl(s
, bgp
->evpn_info
->dad_freeze
);
2414 stream_putl(s
, bgp
->evpn_info
->dad_freeze_time
);
2415 stream_putw_at(s
, 0, stream_get_endp(s
));
2417 return zclient_send_message(zclient
);
2420 static int rule_notify_owner(ZAPI_CALLBACK_ARGS
)
2422 uint32_t seqno
, priority
, unique
;
2423 enum zapi_rule_notify_owner note
;
2424 struct bgp_pbr_action
*bgp_pbra
;
2425 struct bgp_pbr_rule
*bgp_pbr
= NULL
;
2426 char ifname
[INTERFACE_NAMSIZ
+ 1];
2428 if (!zapi_rule_notify_decode(zclient
->ibuf
, &seqno
, &priority
, &unique
,
2432 bgp_pbra
= bgp_pbr_action_rule_lookup(vrf_id
, unique
);
2434 /* look in bgp pbr rule */
2435 bgp_pbr
= bgp_pbr_rule_lookup(vrf_id
, unique
);
2436 if (!bgp_pbr
&& note
!= ZAPI_RULE_REMOVED
) {
2437 if (BGP_DEBUG(zebra
, ZEBRA
))
2438 zlog_debug("%s: Fail to look BGP rule (%u)",
2445 case ZAPI_RULE_FAIL_INSTALL
:
2446 if (BGP_DEBUG(zebra
, ZEBRA
))
2447 zlog_debug("%s: Received RULE_FAIL_INSTALL", __func__
);
2449 bgp_pbra
->installed
= false;
2450 bgp_pbra
->install_in_progress
= false;
2452 bgp_pbr
->installed
= false;
2453 bgp_pbr
->install_in_progress
= false;
2456 case ZAPI_RULE_INSTALLED
:
2458 bgp_pbra
->installed
= true;
2459 bgp_pbra
->install_in_progress
= false;
2461 struct bgp_path_info
*path
;
2462 struct bgp_path_info_extra
*extra
;
2464 bgp_pbr
->installed
= true;
2465 bgp_pbr
->install_in_progress
= false;
2466 bgp_pbr
->action
->refcnt
++;
2467 /* link bgp_info to bgp_pbr */
2468 path
= (struct bgp_path_info
*)bgp_pbr
->path
;
2469 extra
= bgp_path_info_extra_get(path
);
2470 listnode_add_force(&extra
->bgp_fs_iprule
,
2473 if (BGP_DEBUG(zebra
, ZEBRA
))
2474 zlog_debug("%s: Received RULE_INSTALLED", __func__
);
2476 case ZAPI_RULE_FAIL_REMOVE
:
2477 case ZAPI_RULE_REMOVED
:
2478 if (BGP_DEBUG(zebra
, ZEBRA
))
2479 zlog_debug("%s: Received RULE REMOVED", __func__
);
2486 static int ipset_notify_owner(ZAPI_CALLBACK_ARGS
)
2489 enum zapi_ipset_notify_owner note
;
2490 struct bgp_pbr_match
*bgp_pbim
;
2492 if (!zapi_ipset_notify_decode(zclient
->ibuf
,
2497 bgp_pbim
= bgp_pbr_match_ipset_lookup(vrf_id
, unique
);
2499 if (BGP_DEBUG(zebra
, ZEBRA
))
2500 zlog_debug("%s: Fail to look BGP match ( %u, ID %u)",
2501 __func__
, note
, unique
);
2506 case ZAPI_IPSET_FAIL_INSTALL
:
2507 if (BGP_DEBUG(zebra
, ZEBRA
))
2508 zlog_debug("%s: Received IPSET_FAIL_INSTALL", __func__
);
2509 bgp_pbim
->installed
= false;
2510 bgp_pbim
->install_in_progress
= false;
2512 case ZAPI_IPSET_INSTALLED
:
2513 bgp_pbim
->installed
= true;
2514 bgp_pbim
->install_in_progress
= false;
2515 if (BGP_DEBUG(zebra
, ZEBRA
))
2516 zlog_debug("%s: Received IPSET_INSTALLED", __func__
);
2518 case ZAPI_IPSET_FAIL_REMOVE
:
2519 case ZAPI_IPSET_REMOVED
:
2520 if (BGP_DEBUG(zebra
, ZEBRA
))
2521 zlog_debug("%s: Received IPSET REMOVED", __func__
);
2528 static int ipset_entry_notify_owner(ZAPI_CALLBACK_ARGS
)
2531 char ipset_name
[ZEBRA_IPSET_NAME_SIZE
];
2532 enum zapi_ipset_entry_notify_owner note
;
2533 struct bgp_pbr_match_entry
*bgp_pbime
;
2535 if (!zapi_ipset_entry_notify_decode(
2541 bgp_pbime
= bgp_pbr_match_ipset_entry_lookup(vrf_id
,
2545 if (BGP_DEBUG(zebra
, ZEBRA
))
2547 "%s: Fail to look BGP match entry (%u, ID %u)",
2548 __func__
, note
, unique
);
2553 case ZAPI_IPSET_ENTRY_FAIL_INSTALL
:
2554 if (BGP_DEBUG(zebra
, ZEBRA
))
2555 zlog_debug("%s: Received IPSET_ENTRY_FAIL_INSTALL",
2557 bgp_pbime
->installed
= false;
2558 bgp_pbime
->install_in_progress
= false;
2560 case ZAPI_IPSET_ENTRY_INSTALLED
:
2562 struct bgp_path_info
*path
;
2563 struct bgp_path_info_extra
*extra
;
2565 bgp_pbime
->installed
= true;
2566 bgp_pbime
->install_in_progress
= false;
2567 if (BGP_DEBUG(zebra
, ZEBRA
))
2568 zlog_debug("%s: Received IPSET_ENTRY_INSTALLED",
2570 /* link bgp_path_info to bpme */
2571 path
= (struct bgp_path_info
*)bgp_pbime
->path
;
2572 extra
= bgp_path_info_extra_get(path
);
2573 listnode_add_force(&extra
->bgp_fs_pbr
, bgp_pbime
);
2576 case ZAPI_IPSET_ENTRY_FAIL_REMOVE
:
2577 case ZAPI_IPSET_ENTRY_REMOVED
:
2578 if (BGP_DEBUG(zebra
, ZEBRA
))
2579 zlog_debug("%s: Received IPSET_ENTRY_REMOVED",
2586 static int iptable_notify_owner(ZAPI_CALLBACK_ARGS
)
2589 enum zapi_iptable_notify_owner note
;
2590 struct bgp_pbr_match
*bgpm
;
2592 if (!zapi_iptable_notify_decode(
2597 bgpm
= bgp_pbr_match_iptable_lookup(vrf_id
, unique
);
2599 if (BGP_DEBUG(zebra
, ZEBRA
))
2600 zlog_debug("%s: Fail to look BGP iptable (%u %u)",
2601 __func__
, note
, unique
);
2605 case ZAPI_IPTABLE_FAIL_INSTALL
:
2606 if (BGP_DEBUG(zebra
, ZEBRA
))
2607 zlog_debug("%s: Received IPTABLE_FAIL_INSTALL",
2609 bgpm
->installed_in_iptable
= false;
2610 bgpm
->install_iptable_in_progress
= false;
2612 case ZAPI_IPTABLE_INSTALLED
:
2613 bgpm
->installed_in_iptable
= true;
2614 bgpm
->install_iptable_in_progress
= false;
2615 if (BGP_DEBUG(zebra
, ZEBRA
))
2616 zlog_debug("%s: Received IPTABLE_INSTALLED", __func__
);
2617 bgpm
->action
->refcnt
++;
2619 case ZAPI_IPTABLE_FAIL_REMOVE
:
2620 case ZAPI_IPTABLE_REMOVED
:
2621 if (BGP_DEBUG(zebra
, ZEBRA
))
2622 zlog_debug("%s: Received IPTABLE REMOVED", __func__
);
2628 /* Process route notification messages from RIB */
2629 static int bgp_zebra_route_notify_owner(int command
, struct zclient
*zclient
,
2630 zebra_size_t length
, vrf_id_t vrf_id
)
2633 enum zapi_route_notify_owner note
;
2637 struct bgp_dest
*dest
;
2639 struct bgp_path_info
*pi
, *new_select
;
2641 if (!zapi_route_notify_decode(zclient
->ibuf
, &p
, &table_id
, ¬e
,
2643 zlog_err("%s : error in msg decode", __func__
);
2647 /* Get the bgp instance */
2648 bgp
= bgp_lookup_by_vrf_id(vrf_id
);
2650 flog_err(EC_BGP_INVALID_BGP_INSTANCE
,
2651 "%s : bgp instance not found vrf %d", __func__
,
2656 /* Find the bgp route node */
2657 dest
= bgp_afi_node_lookup(bgp
->rib
[afi
][safi
], afi
, safi
, &p
,
2663 case ZAPI_ROUTE_INSTALLED
:
2665 /* Clear the flags so that route can be processed */
2666 UNSET_FLAG(dest
->flags
, BGP_NODE_FIB_INSTALL_PENDING
);
2667 SET_FLAG(dest
->flags
, BGP_NODE_FIB_INSTALLED
);
2668 if (BGP_DEBUG(zebra
, ZEBRA
))
2669 zlog_debug("route %pRN : INSTALLED", dest
);
2670 /* Find the best route */
2671 for (pi
= dest
->info
; pi
; pi
= pi
->next
) {
2672 /* Process aggregate route */
2673 bgp_aggregate_increment(bgp
, &p
, pi
, afi
, safi
);
2674 if (CHECK_FLAG(pi
->flags
, BGP_PATH_SELECTED
))
2677 /* Advertise the route */
2679 group_announce_route(bgp
, afi
, safi
, dest
, new_select
);
2681 flog_err(EC_BGP_INVALID_ROUTE
,
2682 "selected route %pRN not found", dest
);
2684 bgp_dest_unlock_node(dest
);
2688 case ZAPI_ROUTE_REMOVED
:
2689 /* Route deleted from dataplane, reset the installed flag
2690 * so that route can be reinstalled when client sends
2693 UNSET_FLAG(dest
->flags
, BGP_NODE_FIB_INSTALLED
);
2694 if (BGP_DEBUG(zebra
, ZEBRA
))
2695 zlog_debug("route %pRN: Removed from Fib", dest
);
2697 case ZAPI_ROUTE_FAIL_INSTALL
:
2699 if (BGP_DEBUG(zebra
, ZEBRA
))
2700 zlog_debug("route: %pRN Failed to Install into Fib",
2702 UNSET_FLAG(dest
->flags
, BGP_NODE_FIB_INSTALL_PENDING
);
2703 UNSET_FLAG(dest
->flags
, BGP_NODE_FIB_INSTALLED
);
2704 for (pi
= bgp_dest_get_bgp_path_info(dest
); pi
; pi
= pi
->next
) {
2705 if (CHECK_FLAG(pi
->flags
, BGP_PATH_SELECTED
))
2709 group_announce_route(bgp
, afi
, safi
, dest
, new_select
);
2710 /* Error will be logged by zebra module */
2712 case ZAPI_ROUTE_BETTER_ADMIN_WON
:
2713 if (BGP_DEBUG(zebra
, ZEBRA
))
2714 zlog_debug("route: %pRN removed due to better admin won",
2717 UNSET_FLAG(dest
->flags
, BGP_NODE_FIB_INSTALL_PENDING
);
2718 UNSET_FLAG(dest
->flags
, BGP_NODE_FIB_INSTALLED
);
2719 for (pi
= bgp_dest_get_bgp_path_info(dest
); pi
; pi
= pi
->next
) {
2720 bgp_aggregate_decrement(bgp
, &p
, pi
, afi
, safi
);
2721 if (CHECK_FLAG(pi
->flags
, BGP_PATH_SELECTED
))
2725 group_announce_route(bgp
, afi
, safi
, dest
, new_select
);
2726 /* No action required */
2728 case ZAPI_ROUTE_REMOVE_FAIL
:
2729 zlog_warn("%s: Route %pRN failure to remove",
2734 bgp_dest_unlock_node(dest
);
2738 /* this function is used to forge ip rule,
2739 * - either for iptable/ipset using fwmark id
2740 * - or for sample ip rule cmd
2742 static void bgp_encode_pbr_rule_action(struct stream
*s
,
2743 struct bgp_pbr_action
*pbra
,
2744 struct bgp_pbr_rule
*pbr
)
2747 uint8_t fam
= AF_INET
;
2748 char ifname
[INTERFACE_NAMSIZ
];
2750 if (pbra
->nh
.type
== NEXTHOP_TYPE_IPV6
)
2752 stream_putl(s
, 0); /* seqno unused */
2754 stream_putl(s
, pbr
->priority
);
2757 /* ruleno unused - priority change
2758 * ruleno permits distinguishing various FS PBR entries
2759 * - FS PBR entries based on ipset/iptables
2760 * - FS PBR entries based on iprule
2761 * the latter may contain default routing information injected by FS
2764 stream_putl(s
, pbr
->unique
);
2766 stream_putl(s
, pbra
->unique
);
2767 stream_putc(s
, 0); /* ip protocol being used */
2768 if (pbr
&& pbr
->flags
& MATCH_IP_SRC_SET
)
2769 memcpy(&pfx
, &(pbr
->src
), sizeof(struct prefix
));
2771 memset(&pfx
, 0, sizeof(pfx
));
2774 stream_putc(s
, pfx
.family
);
2775 stream_putc(s
, pfx
.prefixlen
);
2776 stream_put(s
, &pfx
.u
.prefix
, prefix_blen(&pfx
));
2778 stream_putw(s
, 0); /* src port */
2780 if (pbr
&& pbr
->flags
& MATCH_IP_DST_SET
)
2781 memcpy(&pfx
, &(pbr
->dst
), sizeof(struct prefix
));
2783 memset(&pfx
, 0, sizeof(pfx
));
2786 stream_putc(s
, pfx
.family
);
2787 stream_putc(s
, pfx
.prefixlen
);
2788 stream_put(s
, &pfx
.u
.prefix
, prefix_blen(&pfx
));
2790 stream_putw(s
, 0); /* dst port */
2791 stream_putc(s
, 0); /* dsfield */
2792 /* if pbr present, fwmark is not used */
2796 stream_putl(s
, pbra
->fwmark
); /* fwmark */
2798 stream_putl(s
, 0); /* queue id */
2799 stream_putw(s
, 0); /* vlan_id */
2800 stream_putw(s
, 0); /* vlan_flags */
2801 stream_putw(s
, 0); /* pcp */
2803 stream_putl(s
, pbra
->table_id
);
2805 memset(ifname
, 0, sizeof(ifname
));
2806 stream_put(s
, ifname
, INTERFACE_NAMSIZ
); /* ifname unused */
2809 static void bgp_encode_pbr_ipset_match(struct stream
*s
,
2810 struct bgp_pbr_match
*pbim
)
2812 stream_putl(s
, pbim
->unique
);
2813 stream_putl(s
, pbim
->type
);
2814 stream_putc(s
, pbim
->family
);
2815 stream_put(s
, pbim
->ipset_name
,
2816 ZEBRA_IPSET_NAME_SIZE
);
2819 static void bgp_encode_pbr_ipset_entry_match(struct stream
*s
,
2820 struct bgp_pbr_match_entry
*pbime
)
2822 stream_putl(s
, pbime
->unique
);
2823 /* check that back pointer is not null */
2824 stream_put(s
, pbime
->backpointer
->ipset_name
,
2825 ZEBRA_IPSET_NAME_SIZE
);
2827 stream_putc(s
, pbime
->src
.family
);
2828 stream_putc(s
, pbime
->src
.prefixlen
);
2829 stream_put(s
, &pbime
->src
.u
.prefix
, prefix_blen(&pbime
->src
));
2831 stream_putc(s
, pbime
->dst
.family
);
2832 stream_putc(s
, pbime
->dst
.prefixlen
);
2833 stream_put(s
, &pbime
->dst
.u
.prefix
, prefix_blen(&pbime
->dst
));
2835 stream_putw(s
, pbime
->src_port_min
);
2836 stream_putw(s
, pbime
->src_port_max
);
2837 stream_putw(s
, pbime
->dst_port_min
);
2838 stream_putw(s
, pbime
->dst_port_max
);
2839 stream_putc(s
, pbime
->proto
);
2842 static void bgp_encode_pbr_iptable_match(struct stream
*s
,
2843 struct bgp_pbr_action
*bpa
,
2844 struct bgp_pbr_match
*pbm
)
2846 stream_putl(s
, pbm
->unique2
);
2848 stream_putl(s
, pbm
->type
);
2850 stream_putl(s
, pbm
->flags
);
2852 /* TODO: correlate with what is contained
2853 * into bgp_pbr_action.
2854 * currently only forward supported
2856 if (bpa
->nh
.type
== NEXTHOP_TYPE_BLACKHOLE
)
2857 stream_putl(s
, ZEBRA_IPTABLES_DROP
);
2859 stream_putl(s
, ZEBRA_IPTABLES_FORWARD
);
2860 stream_putl(s
, bpa
->fwmark
);
2861 stream_put(s
, pbm
->ipset_name
,
2862 ZEBRA_IPSET_NAME_SIZE
);
2863 stream_putc(s
, pbm
->family
);
2864 stream_putw(s
, pbm
->pkt_len_min
);
2865 stream_putw(s
, pbm
->pkt_len_max
);
2866 stream_putw(s
, pbm
->tcp_flags
);
2867 stream_putw(s
, pbm
->tcp_mask_flags
);
2868 stream_putc(s
, pbm
->dscp_value
);
2869 stream_putc(s
, pbm
->fragment
);
2870 stream_putc(s
, pbm
->protocol
);
2871 stream_putw(s
, pbm
->flow_label
);
2874 /* BGP has established connection with Zebra. */
2875 static void bgp_zebra_connected(struct zclient
*zclient
)
2879 zclient_num_connects
++; /* increment even if not responding */
2881 /* Send the client registration */
2882 bfd_client_sendmsg(zclient
, ZEBRA_BFD_CLIENT_REGISTER
, VRF_DEFAULT
);
2884 /* At this point, we may or may not have BGP instances configured, but
2885 * we're only interested in the default VRF (others wouldn't have learnt
2886 * the VRF from Zebra yet.)
2888 bgp
= bgp_get_default();
2892 bgp_zebra_instance_register(bgp
);
2894 /* tell label pool that zebra is connected */
2895 bgp_lp_event_zebra_up();
2897 /* TODO - What if we have peers and networks configured, do we have to
2900 BGP_GR_ROUTER_DETECT_AND_SEND_CAPABILITY_TO_ZEBRA(bgp
, bgp
->peer
);
2903 static int bgp_zebra_process_local_es_add(ZAPI_CALLBACK_ARGS
)
2906 struct bgp
*bgp
= NULL
;
2907 struct stream
*s
= NULL
;
2908 char buf
[ESI_STR_LEN
];
2909 struct in_addr originator_ip
;
2914 bgp
= bgp_lookup_by_vrf_id(vrf_id
);
2919 stream_get(&esi
, s
, sizeof(esi_t
));
2920 originator_ip
.s_addr
= stream_get_ipv4(s
);
2921 active
= stream_getc(s
);
2922 df_pref
= stream_getw(s
);
2923 bypass
= stream_getc(s
);
2925 if (BGP_DEBUG(zebra
, ZEBRA
))
2927 "Rx add ESI %s originator-ip %pI4 active %u df_pref %u %s",
2928 esi_to_str(&esi
, buf
, sizeof(buf
)), &originator_ip
,
2929 active
, df_pref
, bypass
? "bypass" : "");
2931 frrtrace(5, frr_bgp
, evpn_mh_local_es_add_zrecv
, &esi
, originator_ip
,
2932 active
, bypass
, df_pref
);
2934 bgp_evpn_local_es_add(bgp
, &esi
, originator_ip
, active
, df_pref
,
2940 static int bgp_zebra_process_local_es_del(ZAPI_CALLBACK_ARGS
)
2943 struct bgp
*bgp
= NULL
;
2944 struct stream
*s
= NULL
;
2945 char buf
[ESI_STR_LEN
];
2947 memset(&esi
, 0, sizeof(esi_t
));
2948 bgp
= bgp_lookup_by_vrf_id(vrf_id
);
2953 stream_get(&esi
, s
, sizeof(esi_t
));
2955 if (BGP_DEBUG(zebra
, ZEBRA
))
2956 zlog_debug("Rx del ESI %s",
2957 esi_to_str(&esi
, buf
, sizeof(buf
)));
2959 frrtrace(1, frr_bgp
, evpn_mh_local_es_del_zrecv
, &esi
);
2961 bgp_evpn_local_es_del(bgp
, &esi
);
2966 static int bgp_zebra_process_local_es_evi(ZAPI_CALLBACK_ARGS
)
2972 char buf
[ESI_STR_LEN
];
2974 bgp
= bgp_lookup_by_vrf_id(vrf_id
);
2979 stream_get(&esi
, s
, sizeof(esi_t
));
2980 vni
= stream_getl(s
);
2982 if (BGP_DEBUG(zebra
, ZEBRA
))
2983 zlog_debug("Rx %s ESI %s VNI %u",
2984 (cmd
== ZEBRA_VNI_ADD
) ? "add" : "del",
2985 esi_to_str(&esi
, buf
, sizeof(buf
)), vni
);
2987 if (cmd
== ZEBRA_LOCAL_ES_EVI_ADD
) {
2988 frrtrace(2, frr_bgp
, evpn_mh_local_es_evi_add_zrecv
, &esi
, vni
);
2990 bgp_evpn_local_es_evi_add(bgp
, &esi
, vni
);
2992 frrtrace(2, frr_bgp
, evpn_mh_local_es_evi_del_zrecv
, &esi
, vni
);
2994 bgp_evpn_local_es_evi_del(bgp
, &esi
, vni
);
3000 static int bgp_zebra_process_local_l3vni(ZAPI_CALLBACK_ARGS
)
3004 struct ethaddr svi_rmac
, vrr_rmac
= {.octet
= {0} };
3005 struct in_addr originator_ip
;
3007 ifindex_t svi_ifindex
;
3008 bool is_anycast_mac
= false;
3010 memset(&svi_rmac
, 0, sizeof(svi_rmac
));
3011 memset(&originator_ip
, 0, sizeof(originator_ip
));
3013 l3vni
= stream_getl(s
);
3014 if (cmd
== ZEBRA_L3VNI_ADD
) {
3015 stream_get(&svi_rmac
, s
, sizeof(struct ethaddr
));
3016 originator_ip
.s_addr
= stream_get_ipv4(s
);
3017 stream_get(&filter
, s
, sizeof(int));
3018 svi_ifindex
= stream_getl(s
);
3019 stream_get(&vrr_rmac
, s
, sizeof(struct ethaddr
));
3020 is_anycast_mac
= stream_getl(s
);
3022 if (BGP_DEBUG(zebra
, ZEBRA
))
3024 "Rx L3-VNI ADD VRF %s VNI %u RMAC svi-mac %pEA vrr-mac %pEA filter %s svi-if %u",
3025 vrf_id_to_name(vrf_id
), l3vni
, &svi_rmac
,
3027 filter
? "prefix-routes-only" : "none",
3030 frrtrace(8, frr_bgp
, evpn_local_l3vni_add_zrecv
, l3vni
, vrf_id
,
3031 &svi_rmac
, &vrr_rmac
, filter
, originator_ip
,
3032 svi_ifindex
, is_anycast_mac
);
3034 bgp_evpn_local_l3vni_add(l3vni
, vrf_id
, &svi_rmac
, &vrr_rmac
,
3035 originator_ip
, filter
, svi_ifindex
,
3038 if (BGP_DEBUG(zebra
, ZEBRA
))
3039 zlog_debug("Rx L3-VNI DEL VRF %s VNI %u",
3040 vrf_id_to_name(vrf_id
), l3vni
);
3042 frrtrace(2, frr_bgp
, evpn_local_l3vni_del_zrecv
, l3vni
, vrf_id
);
3044 bgp_evpn_local_l3vni_del(l3vni
, vrf_id
);
3050 static int bgp_zebra_process_local_vni(ZAPI_CALLBACK_ARGS
)
3055 struct in_addr vtep_ip
= {INADDR_ANY
};
3056 vrf_id_t tenant_vrf_id
= VRF_DEFAULT
;
3057 struct in_addr mcast_grp
= {INADDR_ANY
};
3058 ifindex_t svi_ifindex
= 0;
3061 vni
= stream_getl(s
);
3062 if (cmd
== ZEBRA_VNI_ADD
) {
3063 vtep_ip
.s_addr
= stream_get_ipv4(s
);
3064 stream_get(&tenant_vrf_id
, s
, sizeof(vrf_id_t
));
3065 mcast_grp
.s_addr
= stream_get_ipv4(s
);
3066 stream_get(&svi_ifindex
, s
, sizeof(ifindex_t
));
3069 bgp
= bgp_lookup_by_vrf_id(vrf_id
);
3073 if (BGP_DEBUG(zebra
, ZEBRA
))
3075 "Rx VNI %s VRF %s VNI %u tenant-vrf %s SVI ifindex %u",
3076 (cmd
== ZEBRA_VNI_ADD
) ? "add" : "del",
3077 vrf_id_to_name(vrf_id
), vni
,
3078 vrf_id_to_name(tenant_vrf_id
), svi_ifindex
);
3080 if (cmd
== ZEBRA_VNI_ADD
) {
3081 frrtrace(4, frr_bgp
, evpn_local_vni_add_zrecv
, vni
, vtep_ip
,
3082 tenant_vrf_id
, mcast_grp
);
3084 return bgp_evpn_local_vni_add(
3086 vtep_ip
.s_addr
!= INADDR_ANY
? vtep_ip
: bgp
->router_id
,
3087 tenant_vrf_id
, mcast_grp
, svi_ifindex
);
3089 frrtrace(1, frr_bgp
, evpn_local_vni_del_zrecv
, vni
);
3091 return bgp_evpn_local_vni_del(bgp
, vni
);
3095 static int bgp_zebra_process_local_macip(ZAPI_CALLBACK_ARGS
)
3104 uint32_t seqnum
= 0;
3106 char buf2
[ESI_STR_LEN
];
3109 memset(&ip
, 0, sizeof(ip
));
3111 vni
= stream_getl(s
);
3112 stream_get(&mac
.octet
, s
, ETH_ALEN
);
3113 ipa_len
= stream_getl(s
);
3114 if (ipa_len
!= 0 && ipa_len
!= IPV4_MAX_BYTELEN
3115 && ipa_len
!= IPV6_MAX_BYTELEN
) {
3116 flog_err(EC_BGP_MACIP_LEN
,
3117 "%u:Recv MACIP %s with invalid IP addr length %d",
3118 vrf_id
, (cmd
== ZEBRA_MACIP_ADD
) ? "Add" : "Del",
3125 (ipa_len
== IPV4_MAX_BYTELEN
) ? IPADDR_V4
: IPADDR_V6
;
3126 stream_get(&ip
.ip
.addr
, s
, ipa_len
);
3128 if (cmd
== ZEBRA_MACIP_ADD
) {
3129 flags
= stream_getc(s
);
3130 seqnum
= stream_getl(s
);
3131 stream_get(&esi
, s
, sizeof(esi_t
));
3133 state
= stream_getl(s
);
3134 memset(&esi
, 0, sizeof(esi_t
));
3137 bgp
= bgp_lookup_by_vrf_id(vrf_id
);
3141 if (BGP_DEBUG(zebra
, ZEBRA
))
3143 "%u:Recv MACIP %s f 0x%x MAC %pEA IP %pIA VNI %u seq %u state %d ESI %s",
3144 vrf_id
, (cmd
== ZEBRA_MACIP_ADD
) ? "Add" : "Del", flags
,
3145 &mac
, &ip
, vni
, seqnum
, state
,
3146 esi_to_str(&esi
, buf2
, sizeof(buf2
)));
3148 if (cmd
== ZEBRA_MACIP_ADD
) {
3149 frrtrace(6, frr_bgp
, evpn_local_macip_add_zrecv
, vni
, &mac
, &ip
,
3150 flags
, seqnum
, &esi
);
3152 return bgp_evpn_local_macip_add(bgp
, vni
, &mac
, &ip
,
3153 flags
, seqnum
, &esi
);
3155 frrtrace(4, frr_bgp
, evpn_local_macip_del_zrecv
, vni
, &mac
, &ip
,
3158 return bgp_evpn_local_macip_del(bgp
, vni
, &mac
, &ip
, state
);
3162 static int bgp_zebra_process_local_ip_prefix(ZAPI_CALLBACK_ARGS
)
3164 struct stream
*s
= NULL
;
3165 struct bgp
*bgp_vrf
= NULL
;
3168 memset(&p
, 0, sizeof(p
));
3170 stream_get(&p
, s
, sizeof(struct prefix
));
3172 bgp_vrf
= bgp_lookup_by_vrf_id(vrf_id
);
3176 if (BGP_DEBUG(zebra
, ZEBRA
))
3177 zlog_debug("Recv prefix %pFX %s on vrf %s", &p
,
3178 (cmd
== ZEBRA_IP_PREFIX_ROUTE_ADD
) ? "ADD" : "DEL",
3179 vrf_id_to_name(vrf_id
));
3181 if (cmd
== ZEBRA_IP_PREFIX_ROUTE_ADD
) {
3183 if (p
.family
== AF_INET
)
3184 bgp_evpn_advertise_type5_route(bgp_vrf
, &p
, NULL
,
3185 AFI_IP
, SAFI_UNICAST
);
3187 bgp_evpn_advertise_type5_route(bgp_vrf
, &p
, NULL
,
3188 AFI_IP6
, SAFI_UNICAST
);
3191 if (p
.family
== AF_INET
)
3192 bgp_evpn_withdraw_type5_route(bgp_vrf
, &p
, AFI_IP
,
3195 bgp_evpn_withdraw_type5_route(bgp_vrf
, &p
, AFI_IP6
,
3201 static int bgp_zebra_process_label_chunk(ZAPI_CALLBACK_ARGS
)
3203 struct stream
*s
= NULL
;
3204 uint8_t response_keep
;
3208 unsigned short instance
;
3211 STREAM_GETC(s
, proto
);
3212 STREAM_GETW(s
, instance
);
3213 STREAM_GETC(s
, response_keep
);
3214 STREAM_GETL(s
, first
);
3215 STREAM_GETL(s
, last
);
3217 if (zclient
->redist_default
!= proto
) {
3218 flog_err(EC_BGP_LM_ERROR
, "Got LM msg with wrong proto %u",
3222 if (zclient
->instance
!= instance
) {
3223 flog_err(EC_BGP_LM_ERROR
, "Got LM msg with wrong instance %u",
3229 first
< MPLS_LABEL_UNRESERVED_MIN
||
3230 last
> MPLS_LABEL_UNRESERVED_MAX
) {
3232 flog_err(EC_BGP_LM_ERROR
, "%s: Invalid Label chunk: %u - %u",
3233 __func__
, first
, last
);
3236 if (BGP_DEBUG(zebra
, ZEBRA
)) {
3237 zlog_debug("Label Chunk assign: %u - %u (%u) ",
3238 first
, last
, response_keep
);
3241 bgp_lp_event_chunk(response_keep
, first
, last
);
3245 stream_failure
: /* for STREAM_GETX */
3249 extern struct zebra_privs_t bgpd_privs
;
3251 static int bgp_ifp_create(struct interface
*ifp
)
3253 struct bgp
*bgp_default
= bgp_get_default();
3256 if (BGP_DEBUG(zebra
, ZEBRA
))
3257 zlog_debug("Rx Intf add VRF %u IF %s", ifp
->vrf
->vrf_id
,
3260 bgp
= ifp
->vrf
->info
;
3264 bgp_mac_add_mac_entry(ifp
);
3266 bgp_update_interface_nbrs(bgp
, ifp
, ifp
);
3267 hook_call(bgp_vrf_status_changed
, bgp
, ifp
);
3270 (if_is_loopback_exact(ifp
) ||
3271 (if_is_vrf(ifp
) && ifp
->vrf
->vrf_id
!= VRF_DEFAULT
))) {
3272 vpn_leak_zebra_vrf_label_update(bgp
, AFI_IP
);
3273 vpn_leak_zebra_vrf_label_update(bgp
, AFI_IP6
);
3274 vpn_leak_zebra_vrf_sid_update(bgp
, AFI_IP
);
3275 vpn_leak_zebra_vrf_sid_update(bgp
, AFI_IP6
);
3276 vpn_leak_postchange_all();
3282 static int bgp_zebra_process_srv6_locator_chunk(ZAPI_CALLBACK_ARGS
)
3284 struct stream
*s
= NULL
;
3285 struct bgp
*bgp
= bgp_get_default();
3286 struct listnode
*node
;
3287 struct srv6_locator_chunk
*c
;
3288 struct srv6_locator_chunk
*chunk
= srv6_locator_chunk_alloc();
3291 zapi_srv6_locator_chunk_decode(s
, chunk
);
3293 if (strcmp(bgp
->srv6_locator_name
, chunk
->locator_name
) != 0) {
3294 zlog_err("%s: Locator name unmatch %s:%s", __func__
,
3295 bgp
->srv6_locator_name
, chunk
->locator_name
);
3296 srv6_locator_chunk_free(&chunk
);
3300 for (ALL_LIST_ELEMENTS_RO(bgp
->srv6_locator_chunks
, node
, c
)) {
3301 if (!prefix_cmp(&c
->prefix
, &chunk
->prefix
)) {
3302 srv6_locator_chunk_free(&chunk
);
3307 listnode_add(bgp
->srv6_locator_chunks
, chunk
);
3308 vpn_leak_postchange_all();
3312 static int bgp_zebra_process_srv6_locator_add(ZAPI_CALLBACK_ARGS
)
3314 struct srv6_locator loc
= {};
3315 struct bgp
*bgp
= bgp_get_default();
3316 const char *loc_name
= bgp
->srv6_locator_name
;
3318 if (zapi_srv6_locator_decode(zclient
->ibuf
, &loc
) < 0)
3321 if (!bgp
|| !bgp
->srv6_enabled
)
3324 if (bgp_zebra_srv6_manager_get_locator_chunk(loc_name
) < 0)
3330 static int bgp_zebra_process_srv6_locator_delete(ZAPI_CALLBACK_ARGS
)
3332 struct srv6_locator loc
= {};
3333 struct bgp
*bgp
= bgp_get_default();
3334 struct listnode
*node
, *nnode
;
3335 struct srv6_locator_chunk
*chunk
, *tovpn_sid_locator
;
3336 struct bgp_srv6_function
*func
;
3337 struct bgp
*bgp_vrf
;
3338 struct in6_addr
*tovpn_sid
;
3339 struct prefix_ipv6 tmp_prefi
;
3341 if (zapi_srv6_locator_decode(zclient
->ibuf
, &loc
) < 0)
3345 for (ALL_LIST_ELEMENTS(bgp
->srv6_locator_chunks
, node
, nnode
, chunk
))
3346 if (prefix_match((struct prefix
*)&loc
.prefix
,
3347 (struct prefix
*)&chunk
->prefix
)) {
3348 listnode_delete(bgp
->srv6_locator_chunks
, chunk
);
3349 srv6_locator_chunk_free(&chunk
);
3352 // refresh functions
3353 for (ALL_LIST_ELEMENTS(bgp
->srv6_functions
, node
, nnode
, func
)) {
3354 tmp_prefi
.family
= AF_INET6
;
3355 tmp_prefi
.prefixlen
= 128;
3356 tmp_prefi
.prefix
= func
->sid
;
3357 if (prefix_match((struct prefix
*)&loc
.prefix
,
3358 (struct prefix
*)&tmp_prefi
)) {
3359 listnode_delete(bgp
->srv6_functions
, func
);
3360 XFREE(MTYPE_BGP_SRV6_FUNCTION
, func
);
3364 // refresh tovpn_sid
3365 for (ALL_LIST_ELEMENTS_RO(bm
->bgp
, node
, bgp_vrf
)) {
3366 if (bgp_vrf
->inst_type
!= BGP_INSTANCE_TYPE_VRF
)
3369 // refresh vpnv4 tovpn_sid
3370 tovpn_sid
= bgp_vrf
->vpn_policy
[AFI_IP
].tovpn_sid
;
3372 tmp_prefi
.family
= AF_INET6
;
3373 tmp_prefi
.prefixlen
= 128;
3374 tmp_prefi
.prefix
= *tovpn_sid
;
3375 if (prefix_match((struct prefix
*)&loc
.prefix
,
3376 (struct prefix
*)&tmp_prefi
))
3377 XFREE(MTYPE_BGP_SRV6_SID
,
3378 bgp_vrf
->vpn_policy
[AFI_IP
].tovpn_sid
);
3381 // refresh vpnv6 tovpn_sid
3382 tovpn_sid
= bgp_vrf
->vpn_policy
[AFI_IP6
].tovpn_sid
;
3384 tmp_prefi
.family
= AF_INET6
;
3385 tmp_prefi
.prefixlen
= 128;
3386 tmp_prefi
.prefix
= *tovpn_sid
;
3387 if (prefix_match((struct prefix
*)&loc
.prefix
,
3388 (struct prefix
*)&tmp_prefi
))
3389 XFREE(MTYPE_BGP_SRV6_SID
,
3390 bgp_vrf
->vpn_policy
[AFI_IP6
].tovpn_sid
);
3393 /* refresh per-vrf tovpn_sid */
3394 tovpn_sid
= bgp_vrf
->tovpn_sid
;
3396 tmp_prefi
.family
= AF_INET6
;
3397 tmp_prefi
.prefixlen
= IPV6_MAX_BITLEN
;
3398 tmp_prefi
.prefix
= *tovpn_sid
;
3399 if (prefix_match((struct prefix
*)&loc
.prefix
,
3400 (struct prefix
*)&tmp_prefi
))
3401 XFREE(MTYPE_BGP_SRV6_SID
, bgp_vrf
->tovpn_sid
);
3405 vpn_leak_postchange_all();
3407 /* refresh tovpn_sid_locator */
3408 for (ALL_LIST_ELEMENTS_RO(bm
->bgp
, node
, bgp_vrf
)) {
3409 if (bgp_vrf
->inst_type
!= BGP_INSTANCE_TYPE_VRF
)
3412 /* refresh vpnv4 tovpn_sid_locator */
3414 bgp_vrf
->vpn_policy
[AFI_IP
].tovpn_sid_locator
;
3415 if (tovpn_sid_locator
) {
3416 tmp_prefi
.family
= AF_INET6
;
3417 tmp_prefi
.prefixlen
= IPV6_MAX_BITLEN
;
3418 tmp_prefi
.prefix
= tovpn_sid_locator
->prefix
.prefix
;
3419 if (prefix_match((struct prefix
*)&loc
.prefix
,
3420 (struct prefix
*)&tmp_prefi
))
3421 srv6_locator_chunk_free(
3422 &bgp_vrf
->vpn_policy
[AFI_IP
]
3423 .tovpn_sid_locator
);
3426 /* refresh vpnv6 tovpn_sid_locator */
3428 bgp_vrf
->vpn_policy
[AFI_IP6
].tovpn_sid_locator
;
3429 if (tovpn_sid_locator
) {
3430 tmp_prefi
.family
= AF_INET6
;
3431 tmp_prefi
.prefixlen
= IPV6_MAX_BITLEN
;
3432 tmp_prefi
.prefix
= tovpn_sid_locator
->prefix
.prefix
;
3433 if (prefix_match((struct prefix
*)&loc
.prefix
,
3434 (struct prefix
*)&tmp_prefi
))
3435 srv6_locator_chunk_free(
3436 &bgp_vrf
->vpn_policy
[AFI_IP6
]
3437 .tovpn_sid_locator
);
3440 /* refresh per-vrf tovpn_sid_locator */
3441 tovpn_sid_locator
= bgp_vrf
->tovpn_sid_locator
;
3442 if (tovpn_sid_locator
) {
3443 tmp_prefi
.family
= AF_INET6
;
3444 tmp_prefi
.prefixlen
= IPV6_MAX_BITLEN
;
3445 tmp_prefi
.prefix
= tovpn_sid_locator
->prefix
.prefix
;
3446 if (prefix_match((struct prefix
*)&loc
.prefix
,
3447 (struct prefix
*)&tmp_prefi
))
3448 srv6_locator_chunk_free(
3449 &bgp_vrf
->tovpn_sid_locator
);
3456 static zclient_handler
*const bgp_handlers
[] = {
3457 [ZEBRA_ROUTER_ID_UPDATE
] = bgp_router_id_update
,
3458 [ZEBRA_INTERFACE_ADDRESS_ADD
] = bgp_interface_address_add
,
3459 [ZEBRA_INTERFACE_ADDRESS_DELETE
] = bgp_interface_address_delete
,
3460 [ZEBRA_INTERFACE_NBR_ADDRESS_ADD
] = bgp_interface_nbr_address_add
,
3461 [ZEBRA_INTERFACE_NBR_ADDRESS_DELETE
] = bgp_interface_nbr_address_delete
,
3462 [ZEBRA_INTERFACE_VRF_UPDATE
] = bgp_interface_vrf_update
,
3463 [ZEBRA_REDISTRIBUTE_ROUTE_ADD
] = zebra_read_route
,
3464 [ZEBRA_REDISTRIBUTE_ROUTE_DEL
] = zebra_read_route
,
3465 [ZEBRA_NEXTHOP_UPDATE
] = bgp_read_nexthop_update
,
3466 [ZEBRA_FEC_UPDATE
] = bgp_read_fec_update
,
3467 [ZEBRA_LOCAL_ES_ADD
] = bgp_zebra_process_local_es_add
,
3468 [ZEBRA_LOCAL_ES_DEL
] = bgp_zebra_process_local_es_del
,
3469 [ZEBRA_VNI_ADD
] = bgp_zebra_process_local_vni
,
3470 [ZEBRA_LOCAL_ES_EVI_ADD
] = bgp_zebra_process_local_es_evi
,
3471 [ZEBRA_LOCAL_ES_EVI_DEL
] = bgp_zebra_process_local_es_evi
,
3472 [ZEBRA_VNI_DEL
] = bgp_zebra_process_local_vni
,
3473 [ZEBRA_MACIP_ADD
] = bgp_zebra_process_local_macip
,
3474 [ZEBRA_MACIP_DEL
] = bgp_zebra_process_local_macip
,
3475 [ZEBRA_L3VNI_ADD
] = bgp_zebra_process_local_l3vni
,
3476 [ZEBRA_L3VNI_DEL
] = bgp_zebra_process_local_l3vni
,
3477 [ZEBRA_IP_PREFIX_ROUTE_ADD
] = bgp_zebra_process_local_ip_prefix
,
3478 [ZEBRA_IP_PREFIX_ROUTE_DEL
] = bgp_zebra_process_local_ip_prefix
,
3479 [ZEBRA_GET_LABEL_CHUNK
] = bgp_zebra_process_label_chunk
,
3480 [ZEBRA_RULE_NOTIFY_OWNER
] = rule_notify_owner
,
3481 [ZEBRA_IPSET_NOTIFY_OWNER
] = ipset_notify_owner
,
3482 [ZEBRA_IPSET_ENTRY_NOTIFY_OWNER
] = ipset_entry_notify_owner
,
3483 [ZEBRA_IPTABLE_NOTIFY_OWNER
] = iptable_notify_owner
,
3484 [ZEBRA_ROUTE_NOTIFY_OWNER
] = bgp_zebra_route_notify_owner
,
3485 [ZEBRA_SRV6_LOCATOR_ADD
] = bgp_zebra_process_srv6_locator_add
,
3486 [ZEBRA_SRV6_LOCATOR_DELETE
] = bgp_zebra_process_srv6_locator_delete
,
3487 [ZEBRA_SRV6_MANAGER_GET_LOCATOR_CHUNK
] =
3488 bgp_zebra_process_srv6_locator_chunk
,
3489 [ZEBRA_OPAQUE_MESSAGE
] = bgp_opaque_msg_handler
,
3492 static int bgp_if_new_hook(struct interface
*ifp
)
3494 struct bgp_interface
*iifp
;
3498 iifp
= XCALLOC(MTYPE_BGP_IF_INFO
, sizeof(struct bgp_interface
));
3504 static int bgp_if_delete_hook(struct interface
*ifp
)
3506 XFREE(MTYPE_BGP_IF_INFO
, ifp
->info
);
3510 void bgp_if_init(void)
3512 /* Initialize Zebra interface data structure. */
3513 hook_register_prio(if_add
, 0, bgp_if_new_hook
);
3514 hook_register_prio(if_del
, 0, bgp_if_delete_hook
);
3517 void bgp_zebra_init(struct thread_master
*master
, unsigned short instance
)
3519 zclient_num_connects
= 0;
3521 if_zapi_callbacks(bgp_ifp_create
, bgp_ifp_up
,
3522 bgp_ifp_down
, bgp_ifp_destroy
);
3524 /* Set default values. */
3525 zclient
= zclient_new(master
, &zclient_options_default
, bgp_handlers
,
3526 array_size(bgp_handlers
));
3527 zclient_init(zclient
, ZEBRA_ROUTE_BGP
, 0, &bgpd_privs
);
3528 zclient
->zebra_connected
= bgp_zebra_connected
;
3529 zclient
->instance
= instance
;
3532 void bgp_zebra_destroy(void)
3534 if (zclient
== NULL
)
3536 zclient_stop(zclient
);
3537 zclient_free(zclient
);
3541 int bgp_zebra_num_connects(void)
3543 return zclient_num_connects
;
3546 void bgp_send_pbr_rule_action(struct bgp_pbr_action
*pbra
,
3547 struct bgp_pbr_rule
*pbr
,
3552 if (pbra
->install_in_progress
&& !pbr
)
3554 if (pbr
&& pbr
->install_in_progress
)
3556 if (BGP_DEBUG(zebra
, ZEBRA
)) {
3558 zlog_debug("%s: table %d (ip rule) %d", __func__
,
3559 pbra
->table_id
, install
);
3561 zlog_debug("%s: table %d fwmark %d %d", __func__
,
3562 pbra
->table_id
, pbra
->fwmark
, install
);
3567 zclient_create_header(s
,
3568 install
? ZEBRA_RULE_ADD
: ZEBRA_RULE_DELETE
,
3570 stream_putl(s
, 1); /* send one pbr action */
3572 bgp_encode_pbr_rule_action(s
, pbra
, pbr
);
3574 stream_putw_at(s
, 0, stream_get_endp(s
));
3575 if ((zclient_send_message(zclient
) != ZCLIENT_SEND_FAILURE
)
3578 pbra
->install_in_progress
= true;
3580 pbr
->install_in_progress
= true;
3584 void bgp_send_pbr_ipset_match(struct bgp_pbr_match
*pbrim
, bool install
)
3588 if (pbrim
->install_in_progress
)
3590 if (BGP_DEBUG(zebra
, ZEBRA
))
3591 zlog_debug("%s: name %s type %d %d, ID %u", __func__
,
3592 pbrim
->ipset_name
, pbrim
->type
, install
,
3597 zclient_create_header(s
,
3598 install
? ZEBRA_IPSET_CREATE
:
3599 ZEBRA_IPSET_DESTROY
,
3602 stream_putl(s
, 1); /* send one pbr action */
3604 bgp_encode_pbr_ipset_match(s
, pbrim
);
3606 stream_putw_at(s
, 0, stream_get_endp(s
));
3607 if ((zclient_send_message(zclient
) != ZCLIENT_SEND_FAILURE
) && install
)
3608 pbrim
->install_in_progress
= true;
3611 void bgp_send_pbr_ipset_entry_match(struct bgp_pbr_match_entry
*pbrime
,
3616 if (pbrime
->install_in_progress
)
3618 if (BGP_DEBUG(zebra
, ZEBRA
))
3619 zlog_debug("%s: name %s %d %d, ID %u", __func__
,
3620 pbrime
->backpointer
->ipset_name
, pbrime
->unique
,
3621 install
, pbrime
->unique
);
3625 zclient_create_header(s
,
3626 install
? ZEBRA_IPSET_ENTRY_ADD
:
3627 ZEBRA_IPSET_ENTRY_DELETE
,
3630 stream_putl(s
, 1); /* send one pbr action */
3632 bgp_encode_pbr_ipset_entry_match(s
, pbrime
);
3634 stream_putw_at(s
, 0, stream_get_endp(s
));
3635 if ((zclient_send_message(zclient
) != ZCLIENT_SEND_FAILURE
) && install
)
3636 pbrime
->install_in_progress
= true;
3639 static void bgp_encode_pbr_interface_list(struct bgp
*bgp
, struct stream
*s
,
3642 struct bgp_pbr_config
*bgp_pbr_cfg
= bgp
->bgp_pbr_cfg
;
3643 struct bgp_pbr_interface_head
*head
;
3644 struct bgp_pbr_interface
*pbr_if
;
3645 struct interface
*ifp
;
3649 if (family
== AF_INET
)
3650 head
= &(bgp_pbr_cfg
->ifaces_by_name_ipv4
);
3652 head
= &(bgp_pbr_cfg
->ifaces_by_name_ipv6
);
3653 RB_FOREACH (pbr_if
, bgp_pbr_interface_head
, head
) {
3654 ifp
= if_lookup_by_name(pbr_if
->name
, bgp
->vrf_id
);
3656 stream_putl(s
, ifp
->ifindex
);
3660 static int bgp_pbr_get_ifnumber(struct bgp
*bgp
, uint8_t family
)
3662 struct bgp_pbr_config
*bgp_pbr_cfg
= bgp
->bgp_pbr_cfg
;
3663 struct bgp_pbr_interface_head
*head
;
3664 struct bgp_pbr_interface
*pbr_if
;
3669 if (family
== AF_INET
)
3670 head
= &(bgp_pbr_cfg
->ifaces_by_name_ipv4
);
3672 head
= &(bgp_pbr_cfg
->ifaces_by_name_ipv6
);
3673 RB_FOREACH (pbr_if
, bgp_pbr_interface_head
, head
) {
3674 if (if_lookup_by_name(pbr_if
->name
, bgp
->vrf_id
))
3680 void bgp_send_pbr_iptable(struct bgp_pbr_action
*pba
,
3681 struct bgp_pbr_match
*pbm
,
3688 if (pbm
->install_iptable_in_progress
)
3690 if (BGP_DEBUG(zebra
, ZEBRA
))
3691 zlog_debug("%s: name %s type %d mark %d %d, ID %u", __func__
,
3692 pbm
->ipset_name
, pbm
->type
, pba
->fwmark
, install
,
3697 zclient_create_header(s
,
3698 install
? ZEBRA_IPTABLE_ADD
:
3699 ZEBRA_IPTABLE_DELETE
,
3702 bgp_encode_pbr_iptable_match(s
, pba
, pbm
);
3703 nb_interface
= bgp_pbr_get_ifnumber(pba
->bgp
, pbm
->family
);
3704 stream_putl(s
, nb_interface
);
3706 bgp_encode_pbr_interface_list(pba
->bgp
, s
, pbm
->family
);
3707 stream_putw_at(s
, 0, stream_get_endp(s
));
3708 ret
= zclient_send_message(zclient
);
3710 if (ret
!= ZCLIENT_SEND_FAILURE
)
3713 pbm
->install_iptable_in_progress
= true;
3717 /* inject in table <table_id> a default route to:
3718 * - if nexthop IP is present : to this nexthop
3719 * - if vrf is different from local : to the matching VRF
3721 void bgp_zebra_announce_default(struct bgp
*bgp
, struct nexthop
*nh
,
3722 afi_t afi
, uint32_t table_id
, bool announce
)
3724 struct zapi_nexthop
*api_nh
;
3725 struct zapi_route api
;
3728 if (!nh
|| (nh
->type
!= NEXTHOP_TYPE_IPV4
3729 && nh
->type
!= NEXTHOP_TYPE_IPV6
)
3730 || nh
->vrf_id
== VRF_UNKNOWN
)
3733 /* in vrf-lite, no default route has to be announced
3734 * the table id of vrf is directly used to divert traffic
3736 if (!vrf_is_backend_netns() && bgp
->vrf_id
!= nh
->vrf_id
)
3739 memset(&p
, 0, sizeof(p
));
3740 if (afi
!= AFI_IP
&& afi
!= AFI_IP6
)
3742 p
.family
= afi2family(afi
);
3743 memset(&api
, 0, sizeof(api
));
3744 api
.vrf_id
= bgp
->vrf_id
;
3745 api
.type
= ZEBRA_ROUTE_BGP
;
3746 api
.safi
= SAFI_UNICAST
;
3748 api
.tableid
= table_id
;
3749 api
.nexthop_num
= 1;
3750 SET_FLAG(api
.message
, ZAPI_MESSAGE_TABLEID
);
3751 SET_FLAG(api
.message
, ZAPI_MESSAGE_NEXTHOP
);
3752 api_nh
= &api
.nexthops
[0];
3754 api
.distance
= ZEBRA_EBGP_DISTANCE_DEFAULT
;
3755 SET_FLAG(api
.message
, ZAPI_MESSAGE_DISTANCE
);
3758 if (afi
== AFI_IP
&& nh
->gate
.ipv4
.s_addr
!= INADDR_ANY
) {
3759 api_nh
->vrf_id
= nh
->vrf_id
;
3760 api_nh
->gate
.ipv4
= nh
->gate
.ipv4
;
3761 api_nh
->type
= NEXTHOP_TYPE_IPV4
;
3763 if (BGP_DEBUG(zebra
, ZEBRA
))
3765 "BGP: %s default route to %pI4 table %d (redirect IP)",
3766 announce
? "adding" : "withdrawing",
3767 &nh
->gate
.ipv4
, table_id
);
3769 zclient_route_send(announce
? ZEBRA_ROUTE_ADD
3770 : ZEBRA_ROUTE_DELETE
,
3772 } else if (afi
== AFI_IP6
&&
3773 memcmp(&nh
->gate
.ipv6
,
3774 &in6addr_any
, sizeof(struct in6_addr
))) {
3775 api_nh
->vrf_id
= nh
->vrf_id
;
3776 memcpy(&api_nh
->gate
.ipv6
, &nh
->gate
.ipv6
,
3777 sizeof(struct in6_addr
));
3778 api_nh
->type
= NEXTHOP_TYPE_IPV6
;
3780 if (BGP_DEBUG(zebra
, ZEBRA
))
3782 "BGP: %s default route to %pI6 table %d (redirect IP)",
3783 announce
? "adding" : "withdrawing",
3784 &nh
->gate
.ipv6
, table_id
);
3786 zclient_route_send(announce
? ZEBRA_ROUTE_ADD
3787 : ZEBRA_ROUTE_DELETE
,
3789 } else if (nh
->vrf_id
!= bgp
->vrf_id
) {
3791 struct interface
*ifp
;
3793 vrf
= vrf_lookup_by_id(nh
->vrf_id
);
3796 /* create default route with interface <VRF>
3797 * with nexthop-vrf <VRF>
3799 ifp
= if_lookup_by_name_vrf(vrf
->name
, vrf
);
3802 api_nh
->vrf_id
= nh
->vrf_id
;
3803 api_nh
->type
= NEXTHOP_TYPE_IFINDEX
;
3804 api_nh
->ifindex
= ifp
->ifindex
;
3805 if (BGP_DEBUG(zebra
, ZEBRA
))
3806 zlog_info("BGP: %s default route to %s table %d (redirect VRF)",
3807 announce
? "adding" : "withdrawing",
3808 vrf
->name
, table_id
);
3809 zclient_route_send(announce
? ZEBRA_ROUTE_ADD
3810 : ZEBRA_ROUTE_DELETE
,
3816 /* Send capabilities to RIB */
3817 int bgp_zebra_send_capabilities(struct bgp
*bgp
, bool disable
)
3819 struct zapi_cap api
;
3820 int ret
= BGP_GR_SUCCESS
;
3822 if (zclient
== NULL
) {
3823 if (BGP_DEBUG(zebra
, ZEBRA
))
3824 zlog_debug("zclient invalid");
3825 return BGP_GR_FAILURE
;
3828 /* Check if the client is connected */
3829 if ((zclient
->sock
< 0) || (zclient
->t_connect
)) {
3830 if (BGP_DEBUG(zebra
, ZEBRA
))
3831 zlog_debug("client not connected");
3832 return BGP_GR_FAILURE
;
3835 /* Check if capability is already sent. If the flag force is set
3836 * send the capability since this can be initial bgp configuration
3838 memset(&api
, 0, sizeof(api
));
3840 api
.cap
= ZEBRA_CLIENT_GR_DISABLE
;
3841 api
.vrf_id
= bgp
->vrf_id
;
3843 api
.cap
= ZEBRA_CLIENT_GR_CAPABILITIES
;
3844 api
.stale_removal_time
= bgp
->rib_stale_time
;
3845 api
.vrf_id
= bgp
->vrf_id
;
3848 if (zclient_capabilities_send(ZEBRA_CLIENT_CAPABILITIES
, zclient
, &api
)
3849 == ZCLIENT_SEND_FAILURE
) {
3850 zlog_err("error sending capability");
3851 ret
= BGP_GR_FAILURE
;
3854 bgp
->present_zebra_gr_state
= ZEBRA_GR_DISABLE
;
3856 bgp
->present_zebra_gr_state
= ZEBRA_GR_ENABLE
;
3858 if (BGP_DEBUG(zebra
, ZEBRA
))
3859 zlog_debug("send capabilty success");
3860 ret
= BGP_GR_SUCCESS
;
3865 /* Send route update pesding or completed status to RIB for the
3866 * specific AFI, SAFI
3868 int bgp_zebra_update(afi_t afi
, safi_t safi
, vrf_id_t vrf_id
, int type
)
3870 struct zapi_cap api
= {0};
3872 if (zclient
== NULL
) {
3873 if (BGP_DEBUG(zebra
, ZEBRA
))
3874 zlog_debug("zclient == NULL, invalid");
3875 return BGP_GR_FAILURE
;
3878 /* Check if the client is connected */
3879 if ((zclient
->sock
< 0) || (zclient
->t_connect
)) {
3880 if (BGP_DEBUG(zebra
, ZEBRA
))
3881 zlog_debug("client not connected");
3882 return BGP_GR_FAILURE
;
3887 api
.vrf_id
= vrf_id
;
3890 if (zclient_capabilities_send(ZEBRA_CLIENT_CAPABILITIES
, zclient
, &api
)
3891 == ZCLIENT_SEND_FAILURE
) {
3892 if (BGP_DEBUG(zebra
, ZEBRA
))
3893 zlog_debug("error sending capability");
3894 return BGP_GR_FAILURE
;
3896 return BGP_GR_SUCCESS
;
3900 /* Send RIB stale timer update */
3901 int bgp_zebra_stale_timer_update(struct bgp
*bgp
)
3903 struct zapi_cap api
;
3905 if (zclient
== NULL
) {
3906 if (BGP_DEBUG(zebra
, ZEBRA
))
3907 zlog_debug("zclient invalid");
3908 return BGP_GR_FAILURE
;
3911 /* Check if the client is connected */
3912 if ((zclient
->sock
< 0) || (zclient
->t_connect
)) {
3913 if (BGP_DEBUG(zebra
, ZEBRA
))
3914 zlog_debug("client not connected");
3915 return BGP_GR_FAILURE
;
3918 memset(&api
, 0, sizeof(api
));
3919 api
.cap
= ZEBRA_CLIENT_RIB_STALE_TIME
;
3920 api
.stale_removal_time
= bgp
->rib_stale_time
;
3921 api
.vrf_id
= bgp
->vrf_id
;
3922 if (zclient_capabilities_send(ZEBRA_CLIENT_CAPABILITIES
, zclient
, &api
)
3923 == ZCLIENT_SEND_FAILURE
) {
3924 if (BGP_DEBUG(zebra
, ZEBRA
))
3925 zlog_debug("error sending capability");
3926 return BGP_GR_FAILURE
;
3928 if (BGP_DEBUG(zebra
, ZEBRA
))
3929 zlog_debug("send capabilty success");
3930 return BGP_GR_SUCCESS
;
3933 int bgp_zebra_srv6_manager_get_locator_chunk(const char *name
)
3935 return srv6_manager_get_locator_chunk(zclient
, name
);
3938 int bgp_zebra_srv6_manager_release_locator_chunk(const char *name
)
3940 return srv6_manager_release_locator_chunk(zclient
, name
);
3944 * ORR messages between processes
3946 static int bgp_opaque_msg_handler(ZAPI_CALLBACK_ARGS
)
3949 struct zapi_opaque_msg info
;
3950 struct orr_igp_metric_info table
;
3955 if (zclient_opaque_decode(s
, &info
) != 0) {
3956 bgp_orr_debug("%s: opaque decode failed", __func__
);
3960 switch (info
.type
) {
3961 case ORR_IGP_METRIC_UPDATE
:
3962 STREAM_GET(&table
, s
, sizeof(table
));
3963 ret
= bgg_orr_message_process(BGP_ORR_IMSG_IGP_METRIC_UPDATE
,