2 * Copyright (C) 2000 Kunihiro Ishiguro <kunihiro@zebra.org>
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
34 #include "bgpd/bgpd.h"
35 #include "bgpd/bgp_debug.h"
36 #include "bgpd/bgp_errors.h"
37 #include "bgpd/bgp_table.h"
38 #include "bgpd/bgp_route.h"
39 #include "bgpd/bgp_attr.h"
40 #include "bgpd/bgp_label.h"
41 #include "bgpd/bgp_mplsvpn.h"
42 #include "bgpd/bgp_packet.h"
43 #include "bgpd/bgp_vty.h"
44 #include "bgpd/bgp_vpn.h"
45 #include "bgpd/bgp_ecommunity.h"
46 #include "bgpd/bgp_zebra.h"
47 #include "bgpd/bgp_nexthop.h"
48 #include "bgpd/bgp_nht.h"
49 #include "bgpd/bgp_evpn.h"
52 #include "bgpd/rfapi/rfapi_backend.h"
56 * Definitions and external declarations.
58 extern struct zclient
*zclient
;
60 extern int argv_find_and_parse_vpnvx(struct cmd_token
**argv
, int argc
,
61 int *index
, afi_t
*afi
)
64 if (argv_find(argv
, argc
, "vpnv4", index
)) {
68 } else if (argv_find(argv
, argc
, "vpnv6", index
)) {
76 uint32_t decode_label(mpls_label_t
*label_pnt
)
79 uint8_t *pnt
= (uint8_t *)label_pnt
;
81 l
= ((uint32_t)*pnt
++ << 12);
82 l
|= (uint32_t)*pnt
++ << 4;
83 l
|= (uint32_t)((*pnt
& 0xf0) >> 4);
87 void encode_label(mpls_label_t label
, mpls_label_t
*label_pnt
)
89 uint8_t *pnt
= (uint8_t *)label_pnt
;
92 if (label
== BGP_PREVENT_VRF_2_VRF_LEAK
) {
96 *pnt
++ = (label
>> 12) & 0xff;
97 *pnt
++ = (label
>> 4) & 0xff;
98 *pnt
++ = ((label
<< 4) + 1) & 0xff; /* S=1 */
101 int bgp_nlri_parse_vpn(struct peer
*peer
, struct attr
*attr
,
102 struct bgp_nlri
*packet
)
112 struct prefix_rd prd
= {0};
113 mpls_label_t label
= {0};
120 prd
.family
= AF_UNSPEC
;
124 lim
= pnt
+ packet
->length
;
130 (CHECK_FLAG(peer
->af_cap
[afi
][safi
], PEER_CAP_ADDPATH_AF_RX_ADV
)
131 && CHECK_FLAG(peer
->af_cap
[afi
][safi
],
132 PEER_CAP_ADDPATH_AF_TX_RCV
));
134 #define VPN_PREFIXLEN_MIN_BYTES (3 + 8) /* label + RD */
135 for (; pnt
< lim
; pnt
+= psize
) {
136 /* Clear prefix structure. */
137 memset(&p
, 0, sizeof(struct prefix
));
139 if (addpath_encoded
) {
141 /* When packet overflow occurs return immediately. */
142 if (pnt
+ BGP_ADDPATH_ID_LEN
> lim
)
143 return BGP_NLRI_PARSE_ERROR_PACKET_OVERFLOW
;
145 addpath_id
= ntohl(*((uint32_t *)pnt
));
146 pnt
+= BGP_ADDPATH_ID_LEN
;
149 /* Fetch prefix length. */
151 p
.family
= afi2family(packet
->afi
);
152 psize
= PSIZE(prefixlen
);
154 if (prefixlen
< VPN_PREFIXLEN_MIN_BYTES
* 8) {
157 "%s [Error] Update packet error / VPN (prefix length %d less than VPN min length)",
158 peer
->host
, prefixlen
);
159 return BGP_NLRI_PARSE_ERROR_PREFIX_LENGTH
;
162 /* sanity check against packet data */
163 if ((pnt
+ psize
) > lim
) {
166 "%s [Error] Update packet error / VPN (prefix length %d exceeds packet size %u)",
167 peer
->host
, prefixlen
, (uint
)(lim
- pnt
));
168 return BGP_NLRI_PARSE_ERROR_PACKET_OVERFLOW
;
171 /* sanity check against storage for the IP address portion */
172 if ((psize
- VPN_PREFIXLEN_MIN_BYTES
) > (ssize_t
)sizeof(p
.u
)) {
175 "%s [Error] Update packet error / VPN (psize %d exceeds storage size %zu)",
177 prefixlen
- VPN_PREFIXLEN_MIN_BYTES
* 8,
179 return BGP_NLRI_PARSE_ERROR_PACKET_LENGTH
;
182 /* Sanity check against max bitlen of the address family */
183 if ((psize
- VPN_PREFIXLEN_MIN_BYTES
) > prefix_blen(&p
)) {
186 "%s [Error] Update packet error / VPN (psize %d exceeds family (%u) max byte len %u)",
188 prefixlen
- VPN_PREFIXLEN_MIN_BYTES
* 8,
189 p
.family
, prefix_blen(&p
));
190 return BGP_NLRI_PARSE_ERROR_PACKET_LENGTH
;
193 /* Copy label to prefix. */
194 memcpy(&label
, pnt
, BGP_LABEL_BYTES
);
195 bgp_set_valid_label(&label
);
197 /* Copy routing distinguisher to rd. */
198 memcpy(&prd
.val
, pnt
+ BGP_LABEL_BYTES
, 8);
200 /* Decode RD type. */
201 type
= decode_rd_type(pnt
+ BGP_LABEL_BYTES
);
205 decode_rd_as(pnt
+ 5, &rd_as
);
209 decode_rd_as4(pnt
+ 5, &rd_as
);
213 decode_rd_ip(pnt
+ 5, &rd_ip
);
217 case RD_TYPE_VNC_ETH
:
222 flog_err(EC_BGP_UPDATE_RCV
, "Unknown RD type %d", type
);
223 break; /* just report */
228 - VPN_PREFIXLEN_MIN_BYTES
* 8; /* exclude label & RD */
229 memcpy(p
.u
.val
, pnt
+ VPN_PREFIXLEN_MIN_BYTES
,
230 psize
- VPN_PREFIXLEN_MIN_BYTES
);
233 bgp_update(peer
, &p
, addpath_id
, attr
, packet
->afi
,
234 SAFI_MPLS_VPN
, ZEBRA_ROUTE_BGP
,
235 BGP_ROUTE_NORMAL
, &prd
, &label
, 1, 0, NULL
);
237 bgp_withdraw(peer
, &p
, addpath_id
, attr
, packet
->afi
,
238 SAFI_MPLS_VPN
, ZEBRA_ROUTE_BGP
,
239 BGP_ROUTE_NORMAL
, &prd
, &label
, 1, NULL
);
242 /* Packet length consistency check. */
246 "%s [Error] Update packet error / VPN (%zu data remaining after parsing)",
247 peer
->host
, lim
- pnt
);
248 return BGP_NLRI_PARSE_ERROR_PACKET_LENGTH
;
252 #undef VPN_PREFIXLEN_MIN_BYTES
256 * This function informs zebra of the label this vrf sets on routes
257 * leaked to VPN. Zebra should install this label in the kernel with
258 * an action of "pop label and then use this vrf's IP FIB to route the PDU."
260 * Sending this vrf-label association is qualified by a) whether vrf->vpn
261 * exporting is active ("export vpn" is enabled, vpn-policy RD and RT list
262 * are set) and b) whether vpn-policy label is set.
264 * If any of these conditions do not hold, then we send MPLS_LABEL_NONE
265 * for this vrf, which zebra interprets to mean "delete this vrf-label
268 void vpn_leak_zebra_vrf_label_update(struct bgp
*bgp
, afi_t afi
)
270 mpls_label_t label
= MPLS_LABEL_NONE
;
271 int debug
= BGP_DEBUG(vpn
, VPN_LEAK_LABEL
);
273 if (bgp
->vrf_id
== VRF_UNKNOWN
) {
276 "%s: vrf %s: afi %s: vrf_id not set, "
277 "can't set zebra vrf label",
278 __func__
, bgp
->name_pretty
, afi2str(afi
));
283 if (vpn_leak_to_vpn_active(bgp
, afi
, NULL
)) {
284 label
= bgp
->vpn_policy
[afi
].tovpn_label
;
288 zlog_debug("%s: vrf %s: afi %s: setting label %d for vrf id %d",
289 __func__
, bgp
->name_pretty
, afi2str(afi
), label
,
293 if (label
== BGP_PREVENT_VRF_2_VRF_LEAK
)
294 label
= MPLS_LABEL_NONE
;
295 zclient_send_vrf_label(zclient
, bgp
->vrf_id
, afi
, label
, ZEBRA_LSP_BGP
);
296 bgp
->vpn_policy
[afi
].tovpn_zebra_vrf_label_last_sent
= label
;
300 * If zebra tells us vrf has become unconfigured, tell zebra not to
301 * use this label to forward to the vrf anymore
303 void vpn_leak_zebra_vrf_label_withdraw(struct bgp
*bgp
, afi_t afi
)
305 mpls_label_t label
= MPLS_LABEL_NONE
;
306 int debug
= BGP_DEBUG(vpn
, VPN_LEAK_LABEL
);
308 if (bgp
->vrf_id
== VRF_UNKNOWN
) {
311 "%s: vrf_id not set, can't delete zebra vrf label",
318 zlog_debug("%s: deleting label for vrf %s (id=%d)", __func__
,
319 bgp
->name_pretty
, bgp
->vrf_id
);
322 zclient_send_vrf_label(zclient
, bgp
->vrf_id
, afi
, label
, ZEBRA_LSP_BGP
);
323 bgp
->vpn_policy
[afi
].tovpn_zebra_vrf_label_last_sent
= label
;
326 int vpn_leak_label_callback(
331 struct vpn_policy
*vp
= (struct vpn_policy
*)labelid
;
332 int debug
= BGP_DEBUG(vpn
, VPN_LEAK_LABEL
);
335 zlog_debug("%s: label=%u, allocated=%d",
336 __func__
, label
, allocated
);
340 * previously-allocated label is now invalid
342 if (CHECK_FLAG(vp
->flags
, BGP_VPN_POLICY_TOVPN_LABEL_AUTO
) &&
343 (vp
->tovpn_label
!= MPLS_LABEL_NONE
)) {
345 vpn_leak_prechange(BGP_VPN_POLICY_DIR_TOVPN
,
346 vp
->afi
, bgp_get_default(), vp
->bgp
);
347 vp
->tovpn_label
= MPLS_LABEL_NONE
;
348 vpn_leak_postchange(BGP_VPN_POLICY_DIR_TOVPN
,
349 vp
->afi
, bgp_get_default(), vp
->bgp
);
355 * New label allocation
357 if (!CHECK_FLAG(vp
->flags
, BGP_VPN_POLICY_TOVPN_LABEL_AUTO
)) {
360 * not currently configured for auto label, reject allocation
365 if (vp
->tovpn_label
!= MPLS_LABEL_NONE
) {
366 if (label
== vp
->tovpn_label
) {
367 /* already have same label, accept but do nothing */
370 /* Shouldn't happen: different label allocation */
371 flog_err(EC_BGP_LABEL
,
372 "%s: %s had label %u but got new assignment %u",
373 __func__
, vp
->bgp
->name_pretty
, vp
->tovpn_label
,
378 vpn_leak_prechange(BGP_VPN_POLICY_DIR_TOVPN
,
379 vp
->afi
, bgp_get_default(), vp
->bgp
);
380 vp
->tovpn_label
= label
;
381 vpn_leak_postchange(BGP_VPN_POLICY_DIR_TOVPN
,
382 vp
->afi
, bgp_get_default(), vp
->bgp
);
387 static int ecom_intersect(struct ecommunity
*e1
, struct ecommunity
*e2
)
395 for (i
= 0; i
< e1
->size
; ++i
) {
396 for (j
= 0; j
< e2
->size
; ++j
) {
397 if (!memcmp(e1
->val
+ (i
* ECOMMUNITY_SIZE
),
398 e2
->val
+ (j
* ECOMMUNITY_SIZE
),
408 static bool labels_same(struct bgp_path_info
*bpi
, mpls_label_t
*label
,
420 if (n
!= bpi
->extra
->num_labels
)
423 for (i
= 0; i
< n
; ++i
) {
424 if (label
[i
] != bpi
->extra
->label
[i
])
431 * make encoded route labels match specified encoded label set
433 static void setlabels(struct bgp_path_info
*bpi
,
434 mpls_label_t
*label
, /* array of labels */
439 assert(num_labels
<= BGP_MAX_LABELS
);
443 bpi
->extra
->num_labels
= 0;
447 struct bgp_path_info_extra
*extra
= bgp_path_info_extra_get(bpi
);
450 for (i
= 0; i
< num_labels
; ++i
) {
451 extra
->label
[i
] = label
[i
];
452 if (!bgp_is_valid_label(&label
[i
])) {
453 bgp_set_valid_label(&extra
->label
[i
]);
456 extra
->num_labels
= num_labels
;
460 * returns pointer to new bgp_path_info upon success
462 static struct bgp_path_info
*
463 leak_update(struct bgp
*bgp
, /* destination bgp instance */
464 struct bgp_node
*bn
, struct attr
*new_attr
, /* already interned */
465 afi_t afi
, safi_t safi
, struct bgp_path_info
*source_bpi
,
466 mpls_label_t
*label
, uint32_t num_labels
, void *parent
,
467 struct bgp
*bgp_orig
, struct prefix
*nexthop_orig
,
468 int nexthop_self_flag
, int debug
)
470 struct prefix
*p
= &bn
->p
;
471 struct bgp_path_info
*bpi
;
472 struct bgp_path_info
*bpi_ultimate
;
473 struct bgp_path_info
*new;
474 char buf_prefix
[PREFIX_STRLEN
];
477 prefix2str(&bn
->p
, buf_prefix
, sizeof(buf_prefix
));
478 zlog_debug("%s: entry: leak-to=%s, p=%s, type=%d, sub_type=%d",
479 __func__
, bgp
->name_pretty
, buf_prefix
,
480 source_bpi
->type
, source_bpi
->sub_type
);
484 * Routes that are redistributed into BGP from zebra do not get
485 * nexthop tracking. However, if those routes are subsequently
486 * imported to other RIBs within BGP, the leaked routes do not
487 * carry the original BGP_ROUTE_REDISTRIBUTE sub_type. Therefore,
488 * in order to determine if the route we are currently leaking
489 * should have nexthop tracking, we must find the ultimate
490 * parent so we can check its sub_type.
492 * As of now, source_bpi may at most be a second-generation route
493 * (only one hop back to ultimate parent for vrf-vpn-vrf scheme).
494 * Using a loop here supports more complex intra-bgp import-export
495 * schemes that could be implemented in the future.
498 for (bpi_ultimate
= source_bpi
;
499 bpi_ultimate
->extra
&& bpi_ultimate
->extra
->parent
;
500 bpi_ultimate
= bpi_ultimate
->extra
->parent
)
506 for (bpi
= bgp_node_get_bgp_path_info(bn
); bpi
; bpi
= bpi
->next
) {
507 if (bpi
->extra
&& bpi
->extra
->parent
== parent
)
512 bool labelssame
= labels_same(bpi
, label
, num_labels
);
514 if (attrhash_cmp(bpi
->attr
, new_attr
) && labelssame
515 && !CHECK_FLAG(bpi
->flags
, BGP_PATH_REMOVED
)) {
517 bgp_attr_unintern(&new_attr
);
520 "%s: ->%s: %s: Found route, no change",
521 __func__
, bgp
->name_pretty
,
526 /* attr is changed */
527 bgp_path_info_set_flag(bn
, bpi
, BGP_PATH_ATTR_CHANGED
);
529 /* Rewrite BGP route information. */
530 if (CHECK_FLAG(bpi
->flags
, BGP_PATH_REMOVED
))
531 bgp_path_info_restore(bn
, bpi
);
533 bgp_aggregate_decrement(bgp
, p
, bpi
, afi
, safi
);
534 bgp_attr_unintern(&bpi
->attr
);
535 bpi
->attr
= new_attr
;
536 bpi
->uptime
= bgp_clock();
542 setlabels(bpi
, label
, num_labels
);
544 if (nexthop_self_flag
)
545 bgp_path_info_set_flag(bn
, bpi
, BGP_PATH_ANNC_NH_SELF
);
547 struct bgp
*bgp_nexthop
= bgp
;
550 if (bpi
->extra
&& bpi
->extra
->bgp_orig
)
551 bgp_nexthop
= bpi
->extra
->bgp_orig
;
554 * No nexthop tracking for redistributed routes or for
555 * EVPN-imported routes that get leaked.
557 if (bpi_ultimate
->sub_type
== BGP_ROUTE_REDISTRIBUTE
||
558 is_pi_family_evpn(bpi_ultimate
))
562 * TBD do we need to do anything about the
563 * 'connected' parameter?
565 nh_valid
= bgp_find_or_add_nexthop(bgp
, bgp_nexthop
,
569 zlog_debug("%s: nexthop is %svalid (in vrf %s)",
570 __func__
, (nh_valid
? "" : "not "),
571 bgp_nexthop
->name_pretty
);
574 bgp_path_info_set_flag(bn
, bpi
, BGP_PATH_VALID
);
576 /* Process change. */
577 bgp_aggregate_increment(bgp
, p
, bpi
, afi
, safi
);
578 bgp_process(bgp
, bn
, afi
, safi
);
582 zlog_debug("%s: ->%s: %s Found route, changed attr",
583 __func__
, bgp
->name_pretty
, buf_prefix
);
588 new = info_make(ZEBRA_ROUTE_BGP
, BGP_ROUTE_IMPORTED
, 0,
589 bgp
->peer_self
, new_attr
, bn
);
591 if (nexthop_self_flag
)
592 bgp_path_info_set_flag(bn
, new, BGP_PATH_ANNC_NH_SELF
);
594 bgp_path_info_extra_get(new);
597 setlabels(new, label
, num_labels
);
599 new->extra
->parent
= bgp_path_info_lock(parent
);
600 bgp_lock_node((struct bgp_node
*)((struct bgp_path_info
*)parent
)->net
);
602 new->extra
->bgp_orig
= bgp_lock(bgp_orig
);
604 new->extra
->nexthop_orig
= *nexthop_orig
;
607 * nexthop tracking for unicast routes
609 struct bgp
*bgp_nexthop
= bgp
;
612 if (new->extra
->bgp_orig
)
613 bgp_nexthop
= new->extra
->bgp_orig
;
616 * No nexthop tracking for redistributed routes because
617 * their originating protocols will do the tracking and
618 * withdraw those routes if the nexthops become unreachable
619 * This also holds good for EVPN-imported routes that get
622 if (bpi_ultimate
->sub_type
== BGP_ROUTE_REDISTRIBUTE
||
623 is_pi_family_evpn(bpi_ultimate
))
627 * TBD do we need to do anything about the
628 * 'connected' parameter?
630 nh_valid
= bgp_find_or_add_nexthop(bgp
, bgp_nexthop
,
634 zlog_debug("%s: nexthop is %svalid (in vrf %s)",
635 __func__
, (nh_valid
? "" : "not "),
636 bgp_nexthop
->name_pretty
);
638 bgp_path_info_set_flag(bn
, new, BGP_PATH_VALID
);
640 bgp_aggregate_increment(bgp
, p
, new, afi
, safi
);
641 bgp_path_info_add(bn
, new);
644 bgp_process(bgp
, bn
, afi
, safi
);
647 zlog_debug("%s: ->%s: %s: Added new route", __func__
,
648 bgp
->name_pretty
, buf_prefix
);
653 /* cf vnc_import_bgp_add_route_mode_nvegroup() and add_vnc_route() */
654 void vpn_leak_from_vrf_update(struct bgp
*bgp_vpn
, /* to */
655 struct bgp
*bgp_vrf
, /* from */
656 struct bgp_path_info
*path_vrf
) /* route */
658 int debug
= BGP_DEBUG(vpn
, VPN_LEAK_FROM_VRF
);
659 struct prefix
*p
= &path_vrf
->net
->p
;
660 afi_t afi
= family2afi(p
->family
);
661 struct attr static_attr
= {0};
662 struct attr
*new_attr
= NULL
;
663 safi_t safi
= SAFI_MPLS_VPN
;
664 mpls_label_t label_val
;
667 const char *debugmsg
;
668 int nexthop_self_flag
= 0;
671 zlog_debug("%s: from vrf %s", __func__
, bgp_vrf
->name_pretty
);
673 if (debug
&& path_vrf
->attr
->ecommunity
) {
674 char *s
= ecommunity_ecom2str(path_vrf
->attr
->ecommunity
,
675 ECOMMUNITY_FORMAT_ROUTE_MAP
, 0);
677 zlog_debug("%s: %s path_vrf->type=%d, EC{%s}", __func__
,
678 bgp_vrf
->name
, path_vrf
->type
, s
);
679 XFREE(MTYPE_ECOMMUNITY_STR
, s
);
687 zlog_debug("%s: can't get afi of prefix", __func__
);
691 /* Is this route exportable into the VPN table? */
692 if (!is_route_injectable_into_vpn(path_vrf
))
695 if (!vpn_leak_to_vpn_active(bgp_vrf
, afi
, &debugmsg
)) {
697 zlog_debug("%s: %s skipping: %s", __func__
,
698 bgp_vrf
->name
, debugmsg
);
703 static_attr
= *path_vrf
->attr
;
708 if (bgp_vrf
->vpn_policy
[afi
].rmap
[BGP_VPN_POLICY_DIR_TOVPN
]) {
709 struct bgp_path_info info
;
710 route_map_result_t ret
;
712 memset(&info
, 0, sizeof(info
));
713 info
.peer
= bgp_vpn
->peer_self
;
714 info
.attr
= &static_attr
;
715 ret
= route_map_apply(
716 bgp_vrf
->vpn_policy
[afi
].rmap
[BGP_VPN_POLICY_DIR_TOVPN
],
718 if (RMAP_DENYMATCH
== ret
) {
719 bgp_attr_flush(&static_attr
); /* free any added parts */
722 "%s: vrf %s route map \"%s\" says DENY, returning",
723 __func__
, bgp_vrf
->name_pretty
,
724 bgp_vrf
->vpn_policy
[afi
]
725 .rmap
[BGP_VPN_POLICY_DIR_TOVPN
]
731 if (debug
&& static_attr
.ecommunity
) {
732 char *s
= ecommunity_ecom2str(static_attr
.ecommunity
,
733 ECOMMUNITY_FORMAT_ROUTE_MAP
, 0);
735 zlog_debug("%s: post route map static_attr.ecommunity{%s}",
737 XFREE(MTYPE_ECOMMUNITY_STR
, s
);
741 * Add the vpn-policy rt-list
743 struct ecommunity
*old_ecom
;
744 struct ecommunity
*new_ecom
;
746 old_ecom
= static_attr
.ecommunity
;
748 new_ecom
= ecommunity_merge(
749 ecommunity_dup(old_ecom
),
750 bgp_vrf
->vpn_policy
[afi
]
751 .rtlist
[BGP_VPN_POLICY_DIR_TOVPN
]);
752 if (!old_ecom
->refcnt
)
753 ecommunity_free(&old_ecom
);
755 new_ecom
= ecommunity_dup(
756 bgp_vrf
->vpn_policy
[afi
]
757 .rtlist
[BGP_VPN_POLICY_DIR_TOVPN
]);
759 static_attr
.ecommunity
= new_ecom
;
760 SET_FLAG(static_attr
.flag
, ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES
));
762 if (debug
&& static_attr
.ecommunity
) {
763 char *s
= ecommunity_ecom2str(static_attr
.ecommunity
,
764 ECOMMUNITY_FORMAT_ROUTE_MAP
, 0);
766 zlog_debug("%s: post merge static_attr.ecommunity{%s}",
768 XFREE(MTYPE_ECOMMUNITY_STR
, s
);
772 /* if policy nexthop not set, use 0 */
773 if (CHECK_FLAG(bgp_vrf
->vpn_policy
[afi
].flags
,
774 BGP_VPN_POLICY_TOVPN_NEXTHOP_SET
)) {
775 struct prefix
*nexthop
=
776 &bgp_vrf
->vpn_policy
[afi
].tovpn_nexthop
;
778 switch (nexthop
->family
) {
780 /* prevent mp_nexthop_global_in <- self in bgp_route.c
782 static_attr
.nexthop
.s_addr
= nexthop
->u
.prefix4
.s_addr
;
784 static_attr
.mp_nexthop_global_in
= nexthop
->u
.prefix4
;
785 static_attr
.mp_nexthop_len
= BGP_ATTR_NHLEN_IPV4
;
789 static_attr
.mp_nexthop_global
= nexthop
->u
.prefix6
;
790 static_attr
.mp_nexthop_len
= BGP_ATTR_NHLEN_IPV6_GLOBAL
;
797 if (!CHECK_FLAG(bgp_vrf
->af_flags
[afi
][SAFI_UNICAST
],
798 BGP_CONFIG_VRF_TO_VRF_EXPORT
)) {
801 * For ipv4, copy to multiprotocol
804 static_attr
.mp_nexthop_global_in
=
806 static_attr
.mp_nexthop_len
=
809 * XXX Leave static_attr.nexthop
813 ~ATTR_FLAG_BIT(BGP_ATTR_NEXT_HOP
);
816 /* Update based on next-hop family to account for
817 * RFC 5549 (BGP unnumbered) scenario. Note that
818 * specific action is only needed for the case of
819 * IPv4 nexthops as the attr has been copied
823 && !BGP_ATTR_NEXTHOP_AFI_IP6(path_vrf
->attr
)) {
824 static_attr
.mp_nexthop_global_in
.s_addr
=
825 static_attr
.nexthop
.s_addr
;
826 static_attr
.mp_nexthop_len
=
829 ATTR_FLAG_BIT(BGP_ATTR_NEXT_HOP
);
832 nexthop_self_flag
= 1;
835 label_val
= bgp_vrf
->vpn_policy
[afi
].tovpn_label
;
836 if (label_val
== MPLS_LABEL_NONE
) {
837 encode_label(MPLS_LABEL_IMPLICIT_NULL
, &label
);
839 encode_label(label_val
, &label
);
842 /* Set originator ID to "me" */
843 SET_FLAG(static_attr
.flag
, ATTR_FLAG_BIT(BGP_ATTR_ORIGINATOR_ID
));
844 static_attr
.originator_id
= bgp_vpn
->router_id
;
847 new_attr
= bgp_attr_intern(
848 &static_attr
); /* hashed refcounted everything */
849 bgp_attr_flush(&static_attr
); /* free locally-allocated parts */
851 if (debug
&& new_attr
->ecommunity
) {
852 char *s
= ecommunity_ecom2str(new_attr
->ecommunity
,
853 ECOMMUNITY_FORMAT_ROUTE_MAP
, 0);
855 zlog_debug("%s: new_attr->ecommunity{%s}", __func__
, s
);
856 XFREE(MTYPE_ECOMMUNITY_STR
, s
);
859 /* Now new_attr is an allocated interned attr */
861 bn
= bgp_afi_node_get(bgp_vpn
->rib
[afi
][safi
], afi
, safi
, p
,
862 &(bgp_vrf
->vpn_policy
[afi
].tovpn_rd
));
864 struct bgp_path_info
*new_info
;
866 new_info
= leak_update(bgp_vpn
, bn
, new_attr
, afi
, safi
, path_vrf
,
867 &label
, 1, path_vrf
, bgp_vrf
, NULL
,
868 nexthop_self_flag
, debug
);
871 * Routes actually installed in the vpn RIB must also be
872 * offered to all vrfs (because now they originate from
875 * Acceptance into other vrfs depends on rt-lists.
876 * Originating vrf will not accept the looped back route
877 * because of loop checking.
880 vpn_leak_to_vrf_update(bgp_vrf
, new_info
);
883 void vpn_leak_from_vrf_withdraw(struct bgp
*bgp_vpn
, /* to */
884 struct bgp
*bgp_vrf
, /* from */
885 struct bgp_path_info
*path_vrf
) /* route */
887 int debug
= BGP_DEBUG(vpn
, VPN_LEAK_FROM_VRF
);
888 struct prefix
*p
= &path_vrf
->net
->p
;
889 afi_t afi
= family2afi(p
->family
);
890 safi_t safi
= SAFI_MPLS_VPN
;
891 struct bgp_path_info
*bpi
;
893 const char *debugmsg
;
894 char buf_prefix
[PREFIX_STRLEN
];
897 prefix2str(p
, buf_prefix
, sizeof(buf_prefix
));
899 "%s: entry: leak-from=%s, p=%s, type=%d, sub_type=%d",
900 __func__
, bgp_vrf
->name_pretty
, buf_prefix
,
901 path_vrf
->type
, path_vrf
->sub_type
);
909 zlog_debug("%s: can't get afi of prefix", __func__
);
913 /* Is this route exportable into the VPN table? */
914 if (!is_route_injectable_into_vpn(path_vrf
))
917 if (!vpn_leak_to_vpn_active(bgp_vrf
, afi
, &debugmsg
)) {
919 zlog_debug("%s: skipping: %s", __func__
, debugmsg
);
924 zlog_debug("%s: withdrawing (path_vrf=%p)", __func__
, path_vrf
);
926 bn
= bgp_afi_node_get(bgp_vpn
->rib
[afi
][safi
], afi
, safi
, p
,
927 &(bgp_vrf
->vpn_policy
[afi
].tovpn_rd
));
933 * match original bpi imported from
935 for (bpi
= bgp_node_get_bgp_path_info(bn
); bpi
; bpi
= bpi
->next
) {
936 if (bpi
->extra
&& bpi
->extra
->parent
== path_vrf
) {
942 /* withdraw from looped vrfs as well */
943 vpn_leak_to_vrf_withdraw(bgp_vpn
, bpi
);
945 bgp_aggregate_decrement(bgp_vpn
, p
, bpi
, afi
, safi
);
946 bgp_path_info_delete(bn
, bpi
);
947 bgp_process(bgp_vpn
, bn
, afi
, safi
);
952 void vpn_leak_from_vrf_withdraw_all(struct bgp
*bgp_vpn
, /* to */
953 struct bgp
*bgp_vrf
, /* from */
956 int debug
= BGP_DEBUG(vpn
, VPN_LEAK_FROM_VRF
);
957 struct bgp_node
*prn
;
958 safi_t safi
= SAFI_MPLS_VPN
;
961 * Walk vpn table, delete bpi with bgp_orig == bgp_vrf
963 for (prn
= bgp_table_top(bgp_vpn
->rib
[afi
][safi
]); prn
;
964 prn
= bgp_route_next(prn
)) {
966 struct bgp_table
*table
;
968 struct bgp_path_info
*bpi
;
970 /* This is the per-RD table of prefixes */
971 table
= bgp_node_get_bgp_table_info(prn
);
976 for (bn
= bgp_table_top(table
); bn
; bn
= bgp_route_next(bn
)) {
978 char buf
[PREFIX2STR_BUFFER
];
980 bpi
= bgp_node_get_bgp_path_info(bn
);
983 "%s: looking at prefix %s", __func__
,
984 prefix2str(&bn
->p
, buf
, sizeof(buf
)));
987 for (; bpi
; bpi
= bpi
->next
) {
989 zlog_debug("%s: type %d, sub_type %d",
992 if (bpi
->sub_type
!= BGP_ROUTE_IMPORTED
)
996 if ((struct bgp
*)bpi
->extra
->bgp_orig
1000 zlog_debug("%s: deleting it",
1002 bgp_aggregate_decrement(bgp_vpn
, &bn
->p
,
1004 bgp_path_info_delete(bn
, bpi
);
1005 bgp_process(bgp_vpn
, bn
, afi
, safi
);
1012 void vpn_leak_from_vrf_update_all(struct bgp
*bgp_vpn
, /* to */
1013 struct bgp
*bgp_vrf
, /* from */
1016 struct bgp_node
*bn
;
1017 struct bgp_path_info
*bpi
;
1018 int debug
= BGP_DEBUG(vpn
, VPN_LEAK_FROM_VRF
);
1021 zlog_debug("%s: entry, afi=%d, vrf=%s", __func__
, afi
,
1022 bgp_vrf
->name_pretty
);
1024 for (bn
= bgp_table_top(bgp_vrf
->rib
[afi
][SAFI_UNICAST
]); bn
;
1025 bn
= bgp_route_next(bn
)) {
1028 zlog_debug("%s: node=%p", __func__
, bn
);
1030 for (bpi
= bgp_node_get_bgp_path_info(bn
); bpi
;
1034 "%s: calling vpn_leak_from_vrf_update",
1036 vpn_leak_from_vrf_update(bgp_vpn
, bgp_vrf
, bpi
);
1042 vpn_leak_to_vrf_update_onevrf(struct bgp
*bgp_vrf
, /* to */
1043 struct bgp
*bgp_vpn
, /* from */
1044 struct bgp_path_info
*path_vpn
) /* route */
1046 struct prefix
*p
= &path_vpn
->net
->p
;
1047 afi_t afi
= family2afi(p
->family
);
1049 struct attr static_attr
= {0};
1050 struct attr
*new_attr
= NULL
;
1051 struct bgp_node
*bn
;
1052 safi_t safi
= SAFI_UNICAST
;
1053 const char *debugmsg
;
1054 struct prefix nexthop_orig
;
1055 mpls_label_t
*pLabels
= NULL
;
1056 uint32_t num_labels
= 0;
1057 int nexthop_self_flag
= 1;
1058 struct bgp_path_info
*bpi_ultimate
= NULL
;
1059 int origin_local
= 0;
1060 struct bgp
*src_vrf
;
1062 int debug
= BGP_DEBUG(vpn
, VPN_LEAK_TO_VRF
);
1064 if (!vpn_leak_from_vpn_active(bgp_vrf
, afi
, &debugmsg
)) {
1066 zlog_debug("%s: skipping: %s", __func__
, debugmsg
);
1070 /* Check for intersection of route targets */
1071 if (!ecom_intersect(
1072 bgp_vrf
->vpn_policy
[afi
].rtlist
[BGP_VPN_POLICY_DIR_FROMVPN
],
1073 path_vpn
->attr
->ecommunity
)) {
1079 char buf_prefix
[PREFIX_STRLEN
];
1081 prefix2str(p
, buf_prefix
, sizeof(buf_prefix
));
1082 zlog_debug("%s: updating %s to vrf %s", __func__
,
1083 buf_prefix
, bgp_vrf
->name_pretty
);
1087 static_attr
= *path_vpn
->attr
;
1090 * Nexthop: stash and clear
1092 * Nexthop is valid in context of VPN core, but not in destination vrf.
1093 * Stash it for later label resolution by vrf ingress path and then
1094 * overwrite with 0, i.e., "me", for the sake of vrf advertisement.
1096 uint8_t nhfamily
= NEXTHOP_FAMILY(path_vpn
->attr
->mp_nexthop_len
);
1098 memset(&nexthop_orig
, 0, sizeof(nexthop_orig
));
1099 nexthop_orig
.family
= nhfamily
;
1104 nexthop_orig
.u
.prefix4
= path_vpn
->attr
->mp_nexthop_global_in
;
1105 nexthop_orig
.prefixlen
= 32;
1107 if (CHECK_FLAG(bgp_vrf
->af_flags
[afi
][safi
],
1108 BGP_CONFIG_VRF_TO_VRF_IMPORT
)) {
1109 static_attr
.nexthop
.s_addr
=
1110 nexthop_orig
.u
.prefix4
.s_addr
;
1112 static_attr
.mp_nexthop_global_in
=
1113 path_vpn
->attr
->mp_nexthop_global_in
;
1114 static_attr
.mp_nexthop_len
=
1115 path_vpn
->attr
->mp_nexthop_len
;
1117 static_attr
.flag
|= ATTR_FLAG_BIT(BGP_ATTR_NEXT_HOP
);
1121 nexthop_orig
.u
.prefix6
= path_vpn
->attr
->mp_nexthop_global
;
1122 nexthop_orig
.prefixlen
= 128;
1124 if (CHECK_FLAG(bgp_vrf
->af_flags
[afi
][safi
],
1125 BGP_CONFIG_VRF_TO_VRF_IMPORT
)) {
1126 static_attr
.mp_nexthop_global
= nexthop_orig
.u
.prefix6
;
1132 * route map handling
1134 if (bgp_vrf
->vpn_policy
[afi
].rmap
[BGP_VPN_POLICY_DIR_FROMVPN
]) {
1135 struct bgp_path_info info
;
1136 route_map_result_t ret
;
1138 memset(&info
, 0, sizeof(info
));
1139 info
.peer
= bgp_vrf
->peer_self
;
1140 info
.attr
= &static_attr
;
1141 info
.extra
= path_vpn
->extra
; /* Used for source-vrf filter */
1142 ret
= route_map_apply(bgp_vrf
->vpn_policy
[afi
]
1143 .rmap
[BGP_VPN_POLICY_DIR_FROMVPN
],
1144 p
, RMAP_BGP
, &info
);
1145 if (RMAP_DENYMATCH
== ret
) {
1146 bgp_attr_flush(&static_attr
); /* free any added parts */
1149 "%s: vrf %s vpn-policy route map \"%s\" says DENY, returning",
1150 __func__
, bgp_vrf
->name_pretty
,
1151 bgp_vrf
->vpn_policy
[afi
]
1152 .rmap
[BGP_VPN_POLICY_DIR_FROMVPN
]
1157 * if route-map changed nexthop, don't nexthop-self on output
1159 if (!CHECK_FLAG(static_attr
.rmap_change_flags
,
1160 BATTR_RMAP_NEXTHOP_UNCHANGED
))
1161 nexthop_self_flag
= 0;
1164 new_attr
= bgp_attr_intern(&static_attr
);
1165 bgp_attr_flush(&static_attr
);
1167 bn
= bgp_afi_node_get(bgp_vrf
->rib
[afi
][safi
], afi
, safi
, p
, NULL
);
1170 * ensure labels are copied
1172 * However, there is a special case: if the route originated in
1173 * another local VRF (as opposed to arriving via VPN), then the
1174 * nexthop is reached by hairpinning through this router (me)
1175 * using IP forwarding only (no LSP). Therefore, the route
1176 * imported to the VRF should not have labels attached. Note
1177 * that nexthop tracking is also involved: eliminating the
1178 * labels for these routes enables the non-labeled nexthops
1179 * from the originating VRF to be considered valid for this route.
1181 if (!CHECK_FLAG(bgp_vrf
->af_flags
[afi
][safi
],
1182 BGP_CONFIG_VRF_TO_VRF_IMPORT
)) {
1183 /* work back to original route */
1184 for (bpi_ultimate
= path_vpn
;
1185 bpi_ultimate
->extra
&& bpi_ultimate
->extra
->parent
;
1186 bpi_ultimate
= bpi_ultimate
->extra
->parent
)
1190 * if original route was unicast,
1191 * then it did not arrive over vpn
1193 if (bpi_ultimate
->net
) {
1194 struct bgp_table
*table
;
1196 table
= bgp_node_table(bpi_ultimate
->net
);
1197 if (table
&& (table
->safi
== SAFI_UNICAST
))
1202 if (!origin_local
&& path_vpn
->extra
1203 && path_vpn
->extra
->num_labels
) {
1204 num_labels
= path_vpn
->extra
->num_labels
;
1205 if (num_labels
> BGP_MAX_LABELS
)
1206 num_labels
= BGP_MAX_LABELS
;
1207 pLabels
= path_vpn
->extra
->label
;
1212 char buf_prefix
[PREFIX_STRLEN
];
1213 prefix2str(p
, buf_prefix
, sizeof(buf_prefix
));
1214 zlog_debug("%s: pfx %s: num_labels %d", __func__
, buf_prefix
,
1219 * For VRF-2-VRF route-leaking,
1220 * the source will be the originating VRF.
1222 if (path_vpn
->extra
&& path_vpn
->extra
->bgp_orig
)
1223 src_vrf
= path_vpn
->extra
->bgp_orig
;
1227 leak_update(bgp_vrf
, bn
, new_attr
, afi
, safi
, path_vpn
, pLabels
,
1228 num_labels
, path_vpn
, /* parent */
1229 src_vrf
, &nexthop_orig
, nexthop_self_flag
, debug
);
1232 void vpn_leak_to_vrf_update(struct bgp
*bgp_vpn
, /* from */
1233 struct bgp_path_info
*path_vpn
) /* route */
1235 struct listnode
*mnode
, *mnnode
;
1238 int debug
= BGP_DEBUG(vpn
, VPN_LEAK_TO_VRF
);
1241 zlog_debug("%s: start (path_vpn=%p)", __func__
, path_vpn
);
1243 /* Loop over VRFs */
1244 for (ALL_LIST_ELEMENTS(bm
->bgp
, mnode
, mnnode
, bgp
)) {
1246 if (!path_vpn
->extra
1247 || path_vpn
->extra
->bgp_orig
!= bgp
) { /* no loop */
1248 vpn_leak_to_vrf_update_onevrf(bgp
, bgp_vpn
, path_vpn
);
1253 void vpn_leak_to_vrf_withdraw(struct bgp
*bgp_vpn
, /* from */
1254 struct bgp_path_info
*path_vpn
) /* route */
1258 safi_t safi
= SAFI_UNICAST
;
1260 struct listnode
*mnode
, *mnnode
;
1261 struct bgp_node
*bn
;
1262 struct bgp_path_info
*bpi
;
1263 const char *debugmsg
;
1264 char buf_prefix
[PREFIX_STRLEN
];
1266 int debug
= BGP_DEBUG(vpn
, VPN_LEAK_TO_VRF
);
1269 prefix2str(&path_vpn
->net
->p
, buf_prefix
, sizeof(buf_prefix
));
1270 zlog_debug("%s: entry: p=%s, type=%d, sub_type=%d", __func__
,
1271 buf_prefix
, path_vpn
->type
, path_vpn
->sub_type
);
1275 zlog_debug("%s: start (path_vpn=%p)", __func__
, path_vpn
);
1277 if (!path_vpn
->net
) {
1279 /* BGP_ROUTE_RFP routes do not have path_vpn->net set (yet) */
1280 if (path_vpn
->type
== ZEBRA_ROUTE_BGP
1281 && path_vpn
->sub_type
== BGP_ROUTE_RFP
) {
1288 "%s: path_vpn->net unexpectedly NULL, no prefix, bailing",
1293 p
= &path_vpn
->net
->p
;
1294 afi
= family2afi(p
->family
);
1296 /* Loop over VRFs */
1297 for (ALL_LIST_ELEMENTS(bm
->bgp
, mnode
, mnnode
, bgp
)) {
1298 if (!vpn_leak_from_vpn_active(bgp
, afi
, &debugmsg
)) {
1300 zlog_debug("%s: skipping: %s", __func__
,
1305 /* Check for intersection of route targets */
1306 if (!ecom_intersect(bgp
->vpn_policy
[afi
]
1307 .rtlist
[BGP_VPN_POLICY_DIR_FROMVPN
],
1308 path_vpn
->attr
->ecommunity
)) {
1314 zlog_debug("%s: withdrawing from vrf %s", __func__
,
1317 bn
= bgp_afi_node_get(bgp
->rib
[afi
][safi
], afi
, safi
, p
, NULL
);
1319 for (bpi
= bgp_node_get_bgp_path_info(bn
); bpi
;
1322 && (struct bgp_path_info
*)bpi
->extra
->parent
1330 zlog_debug("%s: deleting bpi %p", __func__
,
1332 bgp_aggregate_decrement(bgp
, p
, bpi
, afi
, safi
);
1333 bgp_path_info_delete(bn
, bpi
);
1334 bgp_process(bgp
, bn
, afi
, safi
);
1336 bgp_unlock_node(bn
);
1340 void vpn_leak_to_vrf_withdraw_all(struct bgp
*bgp_vrf
, /* to */
1343 struct bgp_node
*bn
;
1344 struct bgp_path_info
*bpi
;
1345 safi_t safi
= SAFI_UNICAST
;
1346 int debug
= BGP_DEBUG(vpn
, VPN_LEAK_TO_VRF
);
1349 zlog_debug("%s: entry", __func__
);
1351 * Walk vrf table, delete bpi with bgp_orig in a different vrf
1353 for (bn
= bgp_table_top(bgp_vrf
->rib
[afi
][safi
]); bn
;
1354 bn
= bgp_route_next(bn
)) {
1356 for (bpi
= bgp_node_get_bgp_path_info(bn
); bpi
;
1359 && bpi
->extra
->bgp_orig
!= bgp_vrf
1360 && bpi
->extra
->parent
1361 && is_pi_family_vpn(bpi
->extra
->parent
)) {
1364 bgp_aggregate_decrement(bgp_vrf
, &bn
->p
, bpi
,
1366 bgp_path_info_delete(bn
, bpi
);
1367 bgp_process(bgp_vrf
, bn
, afi
, safi
);
1373 void vpn_leak_to_vrf_update_all(struct bgp
*bgp_vrf
, /* to */
1374 struct bgp
*bgp_vpn
, /* from */
1377 struct prefix_rd prd
;
1378 struct bgp_node
*prn
;
1379 safi_t safi
= SAFI_MPLS_VPN
;
1386 for (prn
= bgp_table_top(bgp_vpn
->rib
[afi
][safi
]); prn
;
1387 prn
= bgp_route_next(prn
)) {
1389 struct bgp_table
*table
;
1390 struct bgp_node
*bn
;
1391 struct bgp_path_info
*bpi
;
1393 memset(&prd
, 0, sizeof(prd
));
1394 prd
.family
= AF_UNSPEC
;
1396 memcpy(prd
.val
, prn
->p
.u
.val
, 8);
1398 /* This is the per-RD table of prefixes */
1399 table
= bgp_node_get_bgp_table_info(prn
);
1404 for (bn
= bgp_table_top(table
); bn
; bn
= bgp_route_next(bn
)) {
1406 for (bpi
= bgp_node_get_bgp_path_info(bn
); bpi
;
1410 && bpi
->extra
->bgp_orig
== bgp_vrf
)
1413 vpn_leak_to_vrf_update_onevrf(bgp_vrf
, bgp_vpn
,
1421 * This function is called for definition/deletion/change to a route-map
1423 static void vpn_policy_routemap_update(struct bgp
*bgp
, const char *rmap_name
)
1425 int debug
= BGP_DEBUG(vpn
, VPN_LEAK_RMAP_EVENT
);
1427 struct route_map
*rmap
;
1429 if (bgp
->inst_type
!= BGP_INSTANCE_TYPE_DEFAULT
1430 && bgp
->inst_type
!= BGP_INSTANCE_TYPE_VRF
) {
1435 rmap
= route_map_lookup_by_name(rmap_name
); /* NULL if deleted */
1437 for (afi
= 0; afi
< AFI_MAX
; ++afi
) {
1439 if (bgp
->vpn_policy
[afi
].rmap_name
[BGP_VPN_POLICY_DIR_TOVPN
]
1440 && !strcmp(rmap_name
,
1441 bgp
->vpn_policy
[afi
]
1442 .rmap_name
[BGP_VPN_POLICY_DIR_TOVPN
])) {
1446 "%s: rmap \"%s\" matches vrf-policy tovpn for as %d afi %s",
1447 __func__
, rmap_name
, bgp
->as
,
1450 vpn_leak_prechange(BGP_VPN_POLICY_DIR_TOVPN
, afi
,
1451 bgp_get_default(), bgp
);
1453 zlog_debug("%s: after vpn_leak_prechange",
1456 /* in case of definition/deletion */
1457 bgp
->vpn_policy
[afi
].rmap
[BGP_VPN_POLICY_DIR_TOVPN
] =
1460 vpn_leak_postchange(BGP_VPN_POLICY_DIR_TOVPN
, afi
,
1461 bgp_get_default(), bgp
);
1464 zlog_debug("%s: after vpn_leak_postchange",
1468 if (bgp
->vpn_policy
[afi
].rmap_name
[BGP_VPN_POLICY_DIR_FROMVPN
]
1469 && !strcmp(rmap_name
,
1470 bgp
->vpn_policy
[afi
]
1471 .rmap_name
[BGP_VPN_POLICY_DIR_FROMVPN
])) {
1474 zlog_debug("%s: rmap \"%s\" matches vrf-policy fromvpn for as %d afi %s",
1475 __func__
, rmap_name
, bgp
->as
,
1479 vpn_leak_prechange(BGP_VPN_POLICY_DIR_FROMVPN
, afi
,
1480 bgp_get_default(), bgp
);
1482 /* in case of definition/deletion */
1483 bgp
->vpn_policy
[afi
].rmap
[BGP_VPN_POLICY_DIR_FROMVPN
] =
1486 vpn_leak_postchange(BGP_VPN_POLICY_DIR_FROMVPN
, afi
,
1487 bgp_get_default(), bgp
);
1492 /* This API is used during router-id change, reflect VPNs
1493 * auto RD and RT values and readvertise routes to VPN table.
1495 void vpn_handle_router_id_update(struct bgp
*bgp
, bool withdraw
,
1501 const char *export_name
;
1502 char buf
[RD_ADDRSTRLEN
];
1503 struct bgp
*bgp_import
;
1504 struct listnode
*node
;
1505 struct ecommunity
*ecom
;
1506 vpn_policy_direction_t idir
, edir
;
1508 if (bgp
->inst_type
!= BGP_INSTANCE_TYPE_DEFAULT
1509 && bgp
->inst_type
!= BGP_INSTANCE_TYPE_VRF
)
1512 export_name
= bgp
->name
? bgp
->name
: VRF_DEFAULT_NAME
;
1513 debug
= (BGP_DEBUG(vpn
, VPN_LEAK_TO_VRF
) |
1514 BGP_DEBUG(vpn
, VPN_LEAK_FROM_VRF
));
1516 idir
= BGP_VPN_POLICY_DIR_FROMVPN
;
1517 edir
= BGP_VPN_POLICY_DIR_TOVPN
;
1519 for (afi
= 0; afi
< AFI_MAX
; ++afi
) {
1520 if (!vpn_leak_to_vpn_active(bgp
, afi
, NULL
))
1524 vpn_leak_prechange(BGP_VPN_POLICY_DIR_TOVPN
,
1525 afi
, bgp_get_default(), bgp
);
1527 zlog_debug("%s: %s after to_vpn vpn_leak_prechange",
1528 __func__
, export_name
);
1530 /* Remove import RT from VRFs */
1531 ecom
= bgp
->vpn_policy
[afi
].rtlist
[edir
];
1532 for (ALL_LIST_ELEMENTS_RO(bgp
->vpn_policy
[afi
].
1533 export_vrf
, node
, vname
)) {
1534 bgp_import
= bgp_lookup_by_name(vname
);
1538 ecommunity_del_val(bgp_import
->vpn_policy
[afi
].
1540 (struct ecommunity_val
*)ecom
->val
);
1545 * Router-id changes that are not explicit config
1546 * changes should not replace configured RD/RT.
1549 if (CHECK_FLAG(bgp
->vpn_policy
[afi
].flags
,
1550 BGP_VPN_POLICY_TOVPN_RD_SET
)) {
1552 zlog_debug("%s: auto router-id change skipped",
1558 /* New router-id derive auto RD and RT and export
1561 form_auto_rd(bgp
->router_id
, bgp
->vrf_rd_id
,
1562 &bgp
->vrf_prd_auto
);
1563 bgp
->vpn_policy
[afi
].tovpn_rd
= bgp
->vrf_prd_auto
;
1564 prefix_rd2str(&bgp
->vpn_policy
[afi
].tovpn_rd
, buf
,
1566 bgp
->vpn_policy
[afi
].rtlist
[edir
] =
1567 ecommunity_str2com(buf
,
1568 ECOMMUNITY_ROUTE_TARGET
, 0);
1570 /* Update import_vrf rt_list */
1571 ecom
= bgp
->vpn_policy
[afi
].rtlist
[edir
];
1572 for (ALL_LIST_ELEMENTS_RO(bgp
->vpn_policy
[afi
].
1573 export_vrf
, node
, vname
)) {
1574 bgp_import
= bgp_lookup_by_name(vname
);
1577 if (bgp_import
->vpn_policy
[afi
].rtlist
[idir
])
1578 bgp_import
->vpn_policy
[afi
].rtlist
[idir
]
1580 bgp_import
->vpn_policy
[afi
]
1581 .rtlist
[idir
], ecom
);
1583 bgp_import
->vpn_policy
[afi
].rtlist
[idir
]
1584 = ecommunity_dup(ecom
);
1589 /* Update routes to VPN */
1590 vpn_leak_postchange(BGP_VPN_POLICY_DIR_TOVPN
,
1591 afi
, bgp_get_default(),
1594 zlog_debug("%s: %s after to_vpn vpn_leak_postchange",
1595 __func__
, export_name
);
1600 void vpn_policy_routemap_event(const char *rmap_name
)
1602 int debug
= BGP_DEBUG(vpn
, VPN_LEAK_RMAP_EVENT
);
1603 struct listnode
*mnode
, *mnnode
;
1607 zlog_debug("%s: entry", __func__
);
1609 if (bm
->bgp
== NULL
) /* may be called during cleanup */
1612 for (ALL_LIST_ELEMENTS(bm
->bgp
, mnode
, mnnode
, bgp
))
1613 vpn_policy_routemap_update(bgp
, rmap_name
);
1616 void vrf_import_from_vrf(struct bgp
*to_bgp
, struct bgp
*from_bgp
,
1617 afi_t afi
, safi_t safi
)
1619 const char *export_name
;
1620 vpn_policy_direction_t idir
, edir
;
1621 char *vname
, *tmp_name
;
1622 char buf
[RD_ADDRSTRLEN
];
1623 struct ecommunity
*ecom
;
1624 bool first_export
= false;
1626 struct listnode
*node
;
1627 bool is_inst_match
= false;
1629 export_name
= to_bgp
->name
? to_bgp
->name
: VRF_DEFAULT_NAME
;
1630 idir
= BGP_VPN_POLICY_DIR_FROMVPN
;
1631 edir
= BGP_VPN_POLICY_DIR_TOVPN
;
1633 debug
= (BGP_DEBUG(vpn
, VPN_LEAK_TO_VRF
) |
1634 BGP_DEBUG(vpn
, VPN_LEAK_FROM_VRF
));
1637 * Cross-ref both VRFs. Also, note if this is the first time
1638 * any VRF is importing from "import_vrf".
1640 vname
= (from_bgp
->name
? XSTRDUP(MTYPE_TMP
, from_bgp
->name
)
1641 : XSTRDUP(MTYPE_TMP
, VRF_DEFAULT_NAME
));
1643 /* Check the import_vrf list of destination vrf for the source vrf name,
1646 for (ALL_LIST_ELEMENTS_RO(to_bgp
->vpn_policy
[afi
].import_vrf
,
1648 if (strcmp(vname
, tmp_name
) == 0) {
1649 is_inst_match
= true;
1654 listnode_add(to_bgp
->vpn_policy
[afi
].import_vrf
,
1657 /* Check if the source vrf already exports to any vrf,
1658 * first time export requires to setup auto derived RD/RT values.
1659 * Add the destination vrf name to export vrf list if it is
1662 is_inst_match
= false;
1663 vname
= XSTRDUP(MTYPE_TMP
, export_name
);
1664 if (!listcount(from_bgp
->vpn_policy
[afi
].export_vrf
)) {
1665 first_export
= true;
1667 for (ALL_LIST_ELEMENTS_RO(from_bgp
->vpn_policy
[afi
].export_vrf
,
1669 if (strcmp(vname
, tmp_name
) == 0) {
1670 is_inst_match
= true;
1676 listnode_add(from_bgp
->vpn_policy
[afi
].export_vrf
,
1678 /* Update import RT for current VRF using export RT of the VRF we're
1679 * importing from. First though, make sure "import_vrf" has that
1683 form_auto_rd(from_bgp
->router_id
, from_bgp
->vrf_rd_id
,
1684 &from_bgp
->vrf_prd_auto
);
1685 from_bgp
->vpn_policy
[afi
].tovpn_rd
= from_bgp
->vrf_prd_auto
;
1686 SET_FLAG(from_bgp
->vpn_policy
[afi
].flags
,
1687 BGP_VPN_POLICY_TOVPN_RD_SET
);
1688 prefix_rd2str(&from_bgp
->vpn_policy
[afi
].tovpn_rd
,
1690 from_bgp
->vpn_policy
[afi
].rtlist
[edir
] =
1691 ecommunity_str2com(buf
, ECOMMUNITY_ROUTE_TARGET
, 0);
1692 SET_FLAG(from_bgp
->af_flags
[afi
][safi
],
1693 BGP_CONFIG_VRF_TO_VRF_EXPORT
);
1694 from_bgp
->vpn_policy
[afi
].tovpn_label
=
1695 BGP_PREVENT_VRF_2_VRF_LEAK
;
1697 ecom
= from_bgp
->vpn_policy
[afi
].rtlist
[edir
];
1698 if (to_bgp
->vpn_policy
[afi
].rtlist
[idir
])
1699 to_bgp
->vpn_policy
[afi
].rtlist
[idir
] =
1700 ecommunity_merge(to_bgp
->vpn_policy
[afi
]
1701 .rtlist
[idir
], ecom
);
1703 to_bgp
->vpn_policy
[afi
].rtlist
[idir
] = ecommunity_dup(ecom
);
1704 SET_FLAG(to_bgp
->af_flags
[afi
][safi
], BGP_CONFIG_VRF_TO_VRF_IMPORT
);
1707 const char *from_name
;
1709 from_name
= from_bgp
->name
? from_bgp
->name
:
1711 zlog_debug("%s from %s to %s first_export %u import-rt %s export-rt %s",
1712 __func__
, from_name
, export_name
, first_export
,
1713 to_bgp
->vpn_policy
[afi
].rtlist
[idir
] ?
1714 (ecommunity_ecom2str(to_bgp
->vpn_policy
[afi
].
1716 ECOMMUNITY_FORMAT_ROUTE_MAP
, 0)) : " ",
1717 to_bgp
->vpn_policy
[afi
].rtlist
[edir
] ?
1718 (ecommunity_ecom2str(to_bgp
->vpn_policy
[afi
].
1720 ECOMMUNITY_FORMAT_ROUTE_MAP
, 0)) : " ");
1723 /* Does "import_vrf" first need to export its routes or that
1724 * is already done and we just need to import those routes
1725 * from the global table?
1728 vpn_leak_postchange(edir
, afi
, bgp_get_default(), from_bgp
);
1730 vpn_leak_postchange(idir
, afi
, bgp_get_default(), to_bgp
);
1733 void vrf_unimport_from_vrf(struct bgp
*to_bgp
, struct bgp
*from_bgp
,
1734 afi_t afi
, safi_t safi
)
1736 const char *export_name
, *tmp_name
;
1737 vpn_policy_direction_t idir
, edir
;
1739 struct ecommunity
*ecom
= NULL
;
1740 struct listnode
*node
;
1743 export_name
= to_bgp
->name
? to_bgp
->name
: VRF_DEFAULT_NAME
;
1744 tmp_name
= from_bgp
->name
? from_bgp
->name
: VRF_DEFAULT_NAME
;
1745 idir
= BGP_VPN_POLICY_DIR_FROMVPN
;
1746 edir
= BGP_VPN_POLICY_DIR_TOVPN
;
1748 debug
= (BGP_DEBUG(vpn
, VPN_LEAK_TO_VRF
) |
1749 BGP_DEBUG(vpn
, VPN_LEAK_FROM_VRF
));
1751 /* Were we importing from "import_vrf"? */
1752 for (ALL_LIST_ELEMENTS_RO(to_bgp
->vpn_policy
[afi
].import_vrf
, node
,
1754 if (strcmp(vname
, tmp_name
) == 0)
1759 * We do not check in the cli if the passed in bgp
1760 * instance is actually imported into us before
1761 * we call this function. As such if we do not
1762 * find this in the import_vrf list than
1763 * we just need to return safely.
1769 zlog_debug("%s from %s to %s", __func__
, tmp_name
, export_name
);
1771 /* Remove "import_vrf" from our import list. */
1772 listnode_delete(to_bgp
->vpn_policy
[afi
].import_vrf
, vname
);
1773 XFREE(MTYPE_TMP
, vname
);
1775 /* Remove routes imported from "import_vrf". */
1776 /* TODO: In the current logic, we have to first remove all
1777 * imported routes and then (if needed) import back routes
1779 vpn_leak_prechange(idir
, afi
, bgp_get_default(), to_bgp
);
1781 if (to_bgp
->vpn_policy
[afi
].import_vrf
->count
== 0) {
1782 UNSET_FLAG(to_bgp
->af_flags
[afi
][safi
],
1783 BGP_CONFIG_VRF_TO_VRF_IMPORT
);
1784 if (to_bgp
->vpn_policy
[afi
].rtlist
[idir
])
1785 ecommunity_free(&to_bgp
->vpn_policy
[afi
].rtlist
[idir
]);
1787 ecom
= from_bgp
->vpn_policy
[afi
].rtlist
[edir
];
1789 ecommunity_del_val(to_bgp
->vpn_policy
[afi
].rtlist
[idir
],
1790 (struct ecommunity_val
*)ecom
->val
);
1791 vpn_leak_postchange(idir
, afi
, bgp_get_default(), to_bgp
);
1796 * So SA is assuming that since the ALL_LIST_ELEMENTS_RO
1797 * below is checking for NULL that export_vrf can be
1798 * NULL, consequently it is complaining( like a cabbage )
1799 * that we could dereference and crash in the listcount(..)
1801 * So make it happy, under protest, with liberty and justice
1804 assert(from_bgp
->vpn_policy
[afi
].export_vrf
);
1806 /* Remove us from "import_vrf's" export list. If no other VRF
1807 * is importing from "import_vrf", cleanup appropriately.
1809 for (ALL_LIST_ELEMENTS_RO(from_bgp
->vpn_policy
[afi
].export_vrf
,
1811 if (strcmp(vname
, export_name
) == 0)
1816 * If we have gotten to this point then the vname must
1817 * exist. If not, we are in a world of trouble and
1818 * have slag sitting around.
1820 * import_vrf and export_vrf must match in having
1821 * the in/out names as appropriate.
1822 * export_vrf list could have been cleaned up
1823 * as part of no router bgp source instnace.
1828 listnode_delete(from_bgp
->vpn_policy
[afi
].export_vrf
, vname
);
1829 XFREE(MTYPE_TMP
, vname
);
1831 if (!listcount(from_bgp
->vpn_policy
[afi
].export_vrf
)) {
1832 vpn_leak_prechange(edir
, afi
, bgp_get_default(), from_bgp
);
1833 ecommunity_free(&from_bgp
->vpn_policy
[afi
].rtlist
[edir
]);
1834 UNSET_FLAG(from_bgp
->af_flags
[afi
][safi
],
1835 BGP_CONFIG_VRF_TO_VRF_EXPORT
);
1836 memset(&from_bgp
->vpn_policy
[afi
].tovpn_rd
, 0,
1837 sizeof(struct prefix_rd
));
1838 UNSET_FLAG(from_bgp
->vpn_policy
[afi
].flags
,
1839 BGP_VPN_POLICY_TOVPN_RD_SET
);
1840 from_bgp
->vpn_policy
[afi
].tovpn_label
= MPLS_LABEL_NONE
;
1845 /* For testing purpose, static route of MPLS-VPN. */
1846 DEFUN (vpnv4_network
,
1848 "network A.B.C.D/M rd ASN:NN_OR_IP-ADDRESS:NN <tag|label> (0-1048575)",
1849 "Specify a network to announce via BGP\n"
1851 "Specify Route Distinguisher\n"
1852 "VPN Route Distinguisher\n"
1853 "VPN NLRI label (tag)\n"
1854 "VPN NLRI label (tag)\n"
1857 int idx_ipv4_prefixlen
= 1;
1858 int idx_ext_community
= 3;
1860 return bgp_static_set_safi(
1861 AFI_IP
, SAFI_MPLS_VPN
, vty
, argv
[idx_ipv4_prefixlen
]->arg
,
1862 argv
[idx_ext_community
]->arg
, argv
[idx_label
]->arg
, NULL
, 0,
1863 NULL
, NULL
, NULL
, NULL
);
1866 DEFUN (vpnv4_network_route_map
,
1867 vpnv4_network_route_map_cmd
,
1868 "network A.B.C.D/M rd ASN:NN_OR_IP-ADDRESS:NN <tag|label> (0-1048575) route-map WORD",
1869 "Specify a network to announce via BGP\n"
1871 "Specify Route Distinguisher\n"
1872 "VPN Route Distinguisher\n"
1873 "VPN NLRI label (tag)\n"
1874 "VPN NLRI label (tag)\n"
1879 int idx_ipv4_prefixlen
= 1;
1880 int idx_ext_community
= 3;
1883 return bgp_static_set_safi(
1884 AFI_IP
, SAFI_MPLS_VPN
, vty
, argv
[idx_ipv4_prefixlen
]->arg
,
1885 argv
[idx_ext_community
]->arg
, argv
[idx_label
]->arg
,
1886 argv
[idx_word_2
]->arg
, 0, NULL
, NULL
, NULL
, NULL
);
1889 /* For testing purpose, static route of MPLS-VPN. */
1890 DEFUN (no_vpnv4_network
,
1891 no_vpnv4_network_cmd
,
1892 "no network A.B.C.D/M rd ASN:NN_OR_IP-ADDRESS:NN <tag|label> (0-1048575)",
1894 "Specify a network to announce via BGP\n"
1896 "Specify Route Distinguisher\n"
1897 "VPN Route Distinguisher\n"
1898 "VPN NLRI label (tag)\n"
1899 "VPN NLRI label (tag)\n"
1902 int idx_ipv4_prefixlen
= 2;
1903 int idx_ext_community
= 4;
1905 return bgp_static_unset_safi(AFI_IP
, SAFI_MPLS_VPN
, vty
,
1906 argv
[idx_ipv4_prefixlen
]->arg
,
1907 argv
[idx_ext_community
]->arg
,
1908 argv
[idx_label
]->arg
, 0, NULL
, NULL
, NULL
);
1911 DEFUN (vpnv6_network
,
1913 "network X:X::X:X/M rd ASN:NN_OR_IP-ADDRESS:NN <tag|label> (0-1048575) [route-map WORD]",
1914 "Specify a network to announce via BGP\n"
1915 "IPv6 prefix <network>/<length>, e.g., 3ffe::/16\n"
1916 "Specify Route Distinguisher\n"
1917 "VPN Route Distinguisher\n"
1918 "VPN NLRI label (tag)\n"
1919 "VPN NLRI label (tag)\n"
1924 int idx_ipv6_prefix
= 1;
1925 int idx_ext_community
= 3;
1929 return bgp_static_set_safi(
1930 AFI_IP6
, SAFI_MPLS_VPN
, vty
, argv
[idx_ipv6_prefix
]->arg
,
1931 argv
[idx_ext_community
]->arg
, argv
[idx_label
]->arg
,
1932 argv
[idx_word_2
]->arg
, 0, NULL
, NULL
, NULL
, NULL
);
1934 return bgp_static_set_safi(
1935 AFI_IP6
, SAFI_MPLS_VPN
, vty
, argv
[idx_ipv6_prefix
]->arg
,
1936 argv
[idx_ext_community
]->arg
, argv
[idx_label
]->arg
,
1937 NULL
, 0, NULL
, NULL
, NULL
, NULL
);
1940 /* For testing purpose, static route of MPLS-VPN. */
1941 DEFUN (no_vpnv6_network
,
1942 no_vpnv6_network_cmd
,
1943 "no network X:X::X:X/M rd ASN:NN_OR_IP-ADDRESS:NN <tag|label> (0-1048575)",
1945 "Specify a network to announce via BGP\n"
1946 "IPv6 prefix <network>/<length>, e.g., 3ffe::/16\n"
1947 "Specify Route Distinguisher\n"
1948 "VPN Route Distinguisher\n"
1949 "VPN NLRI label (tag)\n"
1950 "VPN NLRI label (tag)\n"
1953 int idx_ipv6_prefix
= 2;
1954 int idx_ext_community
= 4;
1956 return bgp_static_unset_safi(AFI_IP6
, SAFI_MPLS_VPN
, vty
,
1957 argv
[idx_ipv6_prefix
]->arg
,
1958 argv
[idx_ext_community
]->arg
,
1959 argv
[idx_label
]->arg
, 0, NULL
, NULL
, NULL
);
1962 int bgp_show_mpls_vpn(struct vty
*vty
, afi_t afi
, struct prefix_rd
*prd
,
1963 enum bgp_show_type type
, void *output_arg
, int tags
,
1967 struct bgp_table
*table
;
1969 bgp
= bgp_get_default();
1972 vty_out(vty
, "No BGP process is configured\n");
1974 vty_out(vty
, "{}\n");
1977 table
= bgp
->rib
[afi
][SAFI_MPLS_VPN
];
1978 return bgp_show_table_rd(vty
, bgp
, SAFI_MPLS_VPN
, table
, prd
, type
,
1979 output_arg
, use_json
);
1982 DEFUN (show_bgp_ip_vpn_all_rd
,
1983 show_bgp_ip_vpn_all_rd_cmd
,
1984 "show bgp "BGP_AFI_CMD_STR
" vpn all [rd ASN:NN_OR_IP-ADDRESS:NN] [json]",
1988 "Display VPN NLRI specific information\n"
1989 "Display VPN NLRI specific information\n"
1990 "Display information for a route distinguisher\n"
1991 "VPN Route Distinguisher\n"
1995 struct prefix_rd prd
;
1999 if (argv_find_and_parse_afi(argv
, argc
, &idx
, &afi
)) {
2000 if (argv_find(argv
, argc
, "rd", &idx
)) {
2001 ret
= str2prefix_rd(argv
[idx
+ 1]->arg
, &prd
);
2004 "%% Malformed Route Distinguisher\n");
2007 return bgp_show_mpls_vpn(vty
, afi
, &prd
,
2008 bgp_show_type_normal
, NULL
, 0,
2009 use_json(argc
, argv
));
2011 return bgp_show_mpls_vpn(vty
, afi
, NULL
,
2012 bgp_show_type_normal
, NULL
, 0,
2013 use_json(argc
, argv
));
2019 ALIAS(show_bgp_ip_vpn_all_rd
,
2020 show_bgp_ip_vpn_rd_cmd
,
2021 "show bgp "BGP_AFI_CMD_STR
" vpn rd ASN:NN_OR_IP-ADDRESS:NN [json]",
2025 "Display VPN NLRI specific information\n"
2026 "Display information for a route distinguisher\n"
2027 "VPN Route Distinguisher\n"
2030 #ifdef KEEP_OLD_VPN_COMMANDS
2031 DEFUN (show_ip_bgp_vpn_rd
,
2032 show_ip_bgp_vpn_rd_cmd
,
2033 "show ip bgp "BGP_AFI_CMD_STR
" vpn rd ASN:NN_OR_IP-ADDRESS:NN",
2038 "Address Family modifier\n"
2039 "Display information for a route distinguisher\n"
2040 "VPN Route Distinguisher\n")
2042 int idx_ext_community
= argc
- 1;
2044 struct prefix_rd prd
;
2048 if (argv_find_and_parse_vpnvx(argv
, argc
, &idx
, &afi
)) {
2049 ret
= str2prefix_rd(argv
[idx_ext_community
]->arg
, &prd
);
2051 vty_out(vty
, "%% Malformed Route Distinguisher\n");
2054 return bgp_show_mpls_vpn(vty
, afi
, &prd
, bgp_show_type_normal
,
2060 DEFUN (show_ip_bgp_vpn_all
,
2061 show_ip_bgp_vpn_all_cmd
,
2062 "show [ip] bgp <vpnv4|vpnv6>",
2071 if (argv_find_and_parse_vpnvx(argv
, argc
, &idx
, &afi
))
2072 return bgp_show_mpls_vpn(vty
, afi
, NULL
, bgp_show_type_normal
,
2077 DEFUN (show_ip_bgp_vpn_all_tags
,
2078 show_ip_bgp_vpn_all_tags_cmd
,
2079 "show [ip] bgp <vpnv4|vpnv6> all tags",
2084 "Display information about all VPNv4/VPNV6 NLRIs\n"
2085 "Display BGP tags for prefixes\n")
2090 if (argv_find_and_parse_vpnvx(argv
, argc
, &idx
, &afi
))
2091 return bgp_show_mpls_vpn(vty
, afi
, NULL
, bgp_show_type_normal
,
2096 DEFUN (show_ip_bgp_vpn_rd_tags
,
2097 show_ip_bgp_vpn_rd_tags_cmd
,
2098 "show [ip] bgp <vpnv4|vpnv6> rd ASN:NN_OR_IP-ADDRESS:NN tags",
2103 "Display information for a route distinguisher\n"
2104 "VPN Route Distinguisher\n"
2105 "Display BGP tags for prefixes\n")
2107 int idx_ext_community
= 5;
2109 struct prefix_rd prd
;
2113 if (argv_find_and_parse_vpnvx(argv
, argc
, &idx
, &afi
)) {
2114 ret
= str2prefix_rd(argv
[idx_ext_community
]->arg
, &prd
);
2116 vty_out(vty
, "%% Malformed Route Distinguisher\n");
2119 return bgp_show_mpls_vpn(vty
, afi
, &prd
, bgp_show_type_normal
,
2125 DEFUN (show_ip_bgp_vpn_all_neighbor_routes
,
2126 show_ip_bgp_vpn_all_neighbor_routes_cmd
,
2127 "show [ip] bgp <vpnv4|vpnv6> all neighbors A.B.C.D routes [json]",
2132 "Display information about all VPNv4/VPNv6 NLRIs\n"
2133 "Detailed information on TCP and BGP neighbor connections\n"
2134 "Neighbor to display information about\n"
2135 "Display routes learned from neighbor\n"
2142 bool uj
= use_json(argc
, argv
);
2146 if (argv_find_and_parse_vpnvx(argv
, argc
, &idx
, &afi
)) {
2147 ret
= str2sockunion(argv
[idx_ipv4
]->arg
, &su
);
2150 json_object
*json_no
= NULL
;
2151 json_no
= json_object_new_object();
2152 json_object_string_add(json_no
, "warning",
2153 "Malformed address");
2154 vty_out(vty
, "%s\n",
2155 json_object_to_json_string(json_no
));
2156 json_object_free(json_no
);
2158 vty_out(vty
, "Malformed address: %s\n",
2159 argv
[idx_ipv4
]->arg
);
2163 peer
= peer_lookup(NULL
, &su
);
2164 if (!peer
|| !peer
->afc
[afi
][SAFI_MPLS_VPN
]) {
2166 json_object
*json_no
= NULL
;
2167 json_no
= json_object_new_object();
2168 json_object_string_add(
2170 "No such neighbor or address family");
2171 vty_out(vty
, "%s\n",
2172 json_object_to_json_string(json_no
));
2173 json_object_free(json_no
);
2176 "%% No such neighbor or address family\n");
2180 return bgp_show_mpls_vpn(vty
, afi
, NULL
, bgp_show_type_neighbor
,
2186 DEFUN (show_ip_bgp_vpn_rd_neighbor_routes
,
2187 show_ip_bgp_vpn_rd_neighbor_routes_cmd
,
2188 "show [ip] bgp <vpnv4|vpnv6> rd ASN:NN_OR_IP-ADDRESS:NN neighbors A.B.C.D routes [json]",
2193 "Display information for a route distinguisher\n"
2194 "VPN Route Distinguisher\n"
2195 "Detailed information on TCP and BGP neighbor connections\n"
2196 "Neighbor to display information about\n"
2197 "Display routes learned from neighbor\n"
2200 int idx_ext_community
= 5;
2205 struct prefix_rd prd
;
2206 bool uj
= use_json(argc
, argv
);
2210 if (argv_find_and_parse_vpnvx(argv
, argc
, &idx
, &afi
)) {
2211 ret
= str2prefix_rd(argv
[idx_ext_community
]->arg
, &prd
);
2214 json_object
*json_no
= NULL
;
2215 json_no
= json_object_new_object();
2216 json_object_string_add(
2218 "Malformed Route Distinguisher");
2219 vty_out(vty
, "%s\n",
2220 json_object_to_json_string(json_no
));
2221 json_object_free(json_no
);
2224 "%% Malformed Route Distinguisher\n");
2228 ret
= str2sockunion(argv
[idx_ipv4
]->arg
, &su
);
2231 json_object
*json_no
= NULL
;
2232 json_no
= json_object_new_object();
2233 json_object_string_add(json_no
, "warning",
2234 "Malformed address");
2235 vty_out(vty
, "%s\n",
2236 json_object_to_json_string(json_no
));
2237 json_object_free(json_no
);
2239 vty_out(vty
, "Malformed address: %s\n",
2240 argv
[idx_ext_community
]->arg
);
2244 peer
= peer_lookup(NULL
, &su
);
2245 if (!peer
|| !peer
->afc
[afi
][SAFI_MPLS_VPN
]) {
2247 json_object
*json_no
= NULL
;
2248 json_no
= json_object_new_object();
2249 json_object_string_add(
2251 "No such neighbor or address family");
2252 vty_out(vty
, "%s\n",
2253 json_object_to_json_string(json_no
));
2254 json_object_free(json_no
);
2257 "%% No such neighbor or address family\n");
2261 return bgp_show_mpls_vpn(vty
, afi
, &prd
, bgp_show_type_neighbor
,
2267 DEFUN (show_ip_bgp_vpn_all_neighbor_advertised_routes
,
2268 show_ip_bgp_vpn_all_neighbor_advertised_routes_cmd
,
2269 "show [ip] bgp <vpnv4|vpnv6> all neighbors A.B.C.D advertised-routes [json]",
2274 "Display information about all VPNv4/VPNv6 NLRIs\n"
2275 "Detailed information on TCP and BGP neighbor connections\n"
2276 "Neighbor to display information about\n"
2277 "Display the routes advertised to a BGP neighbor\n"
2284 bool uj
= use_json(argc
, argv
);
2288 if (argv_find_and_parse_vpnvx(argv
, argc
, &idx
, &afi
)) {
2289 ret
= str2sockunion(argv
[idx_ipv4
]->arg
, &su
);
2292 json_object
*json_no
= NULL
;
2293 json_no
= json_object_new_object();
2294 json_object_string_add(json_no
, "warning",
2295 "Malformed address");
2296 vty_out(vty
, "%s\n",
2297 json_object_to_json_string(json_no
));
2298 json_object_free(json_no
);
2300 vty_out(vty
, "Malformed address: %s\n",
2301 argv
[idx_ipv4
]->arg
);
2304 peer
= peer_lookup(NULL
, &su
);
2305 if (!peer
|| !peer
->afc
[afi
][SAFI_MPLS_VPN
]) {
2307 json_object
*json_no
= NULL
;
2308 json_no
= json_object_new_object();
2309 json_object_string_add(
2311 "No such neighbor or address family");
2312 vty_out(vty
, "%s\n",
2313 json_object_to_json_string(json_no
));
2314 json_object_free(json_no
);
2317 "%% No such neighbor or address family\n");
2320 return show_adj_route_vpn(vty
, peer
, NULL
, AFI_IP
,
2326 DEFUN (show_ip_bgp_vpn_rd_neighbor_advertised_routes
,
2327 show_ip_bgp_vpn_rd_neighbor_advertised_routes_cmd
,
2328 "show [ip] bgp <vpnv4|vpnv6> rd ASN:NN_OR_IP-ADDRESS:NN neighbors A.B.C.D advertised-routes [json]",
2333 "Display information for a route distinguisher\n"
2334 "VPN Route Distinguisher\n"
2335 "Detailed information on TCP and BGP neighbor connections\n"
2336 "Neighbor to display information about\n"
2337 "Display the routes advertised to a BGP neighbor\n"
2340 int idx_ext_community
= 5;
2344 struct prefix_rd prd
;
2346 bool uj
= use_json(argc
, argv
);
2350 if (argv_find_and_parse_vpnvx(argv
, argc
, &idx
, &afi
)) {
2351 ret
= str2sockunion(argv
[idx_ipv4
]->arg
, &su
);
2354 json_object
*json_no
= NULL
;
2355 json_no
= json_object_new_object();
2356 json_object_string_add(json_no
, "warning",
2357 "Malformed address");
2358 vty_out(vty
, "%s\n",
2359 json_object_to_json_string(json_no
));
2360 json_object_free(json_no
);
2362 vty_out(vty
, "Malformed address: %s\n",
2363 argv
[idx_ext_community
]->arg
);
2366 peer
= peer_lookup(NULL
, &su
);
2367 if (!peer
|| !peer
->afc
[afi
][SAFI_MPLS_VPN
]) {
2369 json_object
*json_no
= NULL
;
2370 json_no
= json_object_new_object();
2371 json_object_string_add(
2373 "No such neighbor or address family");
2374 vty_out(vty
, "%s\n",
2375 json_object_to_json_string(json_no
));
2376 json_object_free(json_no
);
2379 "%% No such neighbor or address family\n");
2383 ret
= str2prefix_rd(argv
[idx_ext_community
]->arg
, &prd
);
2386 json_object
*json_no
= NULL
;
2387 json_no
= json_object_new_object();
2388 json_object_string_add(
2390 "Malformed Route Distinguisher");
2391 vty_out(vty
, "%s\n",
2392 json_object_to_json_string(json_no
));
2393 json_object_free(json_no
);
2396 "%% Malformed Route Distinguisher\n");
2400 return show_adj_route_vpn(vty
, peer
, &prd
, AFI_IP
,
2405 #endif /* KEEP_OLD_VPN_COMMANDS */
2407 void bgp_mplsvpn_init(void)
2409 install_element(BGP_VPNV4_NODE
, &vpnv4_network_cmd
);
2410 install_element(BGP_VPNV4_NODE
, &vpnv4_network_route_map_cmd
);
2411 install_element(BGP_VPNV4_NODE
, &no_vpnv4_network_cmd
);
2413 install_element(BGP_VPNV6_NODE
, &vpnv6_network_cmd
);
2414 install_element(BGP_VPNV6_NODE
, &no_vpnv6_network_cmd
);
2416 install_element(VIEW_NODE
, &show_bgp_ip_vpn_all_rd_cmd
);
2417 install_element(VIEW_NODE
, &show_bgp_ip_vpn_rd_cmd
);
2418 #ifdef KEEP_OLD_VPN_COMMANDS
2419 install_element(VIEW_NODE
, &show_ip_bgp_vpn_rd_cmd
);
2420 install_element(VIEW_NODE
, &show_ip_bgp_vpn_all_cmd
);
2421 install_element(VIEW_NODE
, &show_ip_bgp_vpn_all_tags_cmd
);
2422 install_element(VIEW_NODE
, &show_ip_bgp_vpn_rd_tags_cmd
);
2423 install_element(VIEW_NODE
, &show_ip_bgp_vpn_all_neighbor_routes_cmd
);
2424 install_element(VIEW_NODE
, &show_ip_bgp_vpn_rd_neighbor_routes_cmd
);
2425 install_element(VIEW_NODE
,
2426 &show_ip_bgp_vpn_all_neighbor_advertised_routes_cmd
);
2427 install_element(VIEW_NODE
,
2428 &show_ip_bgp_vpn_rd_neighbor_advertised_routes_cmd
);
2429 #endif /* KEEP_OLD_VPN_COMMANDS */
2432 vrf_id_t
get_first_vrf_for_redirect_with_rt(struct ecommunity
*eckey
)
2434 struct listnode
*mnode
, *mnnode
;
2437 for (ALL_LIST_ELEMENTS(bm
->bgp
, mnode
, mnnode
, bgp
)) {
2438 struct ecommunity
*ec
;
2440 if (bgp
->inst_type
!= BGP_INSTANCE_TYPE_VRF
)
2443 ec
= bgp
->vpn_policy
[AFI_IP
].import_redirect_rtlist
;
2445 if (ecom_intersect(ec
, eckey
))
2452 * The purpose of this function is to process leaks that were deferred
2453 * from earlier per-vrf configuration due to not-yet-existing default
2454 * vrf, in other words, configuration such as:
2456 * router bgp MMM vrf FOO
2457 * address-family ipv4 unicast
2459 * exit-address-family
2464 * This function gets called when the default instance ("router bgp NNN")
2467 void vpn_leak_postchange_all(void)
2469 struct listnode
*next
;
2471 struct bgp
*bgp_default
= bgp_get_default();
2473 assert(bgp_default
);
2475 /* First, do any exporting from VRFs to the single VPN RIB */
2476 for (ALL_LIST_ELEMENTS_RO(bm
->bgp
, next
, bgp
)) {
2478 if (bgp
->inst_type
!= BGP_INSTANCE_TYPE_VRF
)
2481 vpn_leak_postchange(
2482 BGP_VPN_POLICY_DIR_TOVPN
,
2487 vpn_leak_postchange(
2488 BGP_VPN_POLICY_DIR_TOVPN
,
2494 /* Now, do any importing to VRFs from the single VPN RIB */
2495 for (ALL_LIST_ELEMENTS_RO(bm
->bgp
, next
, bgp
)) {
2497 if (bgp
->inst_type
!= BGP_INSTANCE_TYPE_VRF
)
2500 vpn_leak_postchange(
2501 BGP_VPN_POLICY_DIR_FROMVPN
,
2506 vpn_leak_postchange(
2507 BGP_VPN_POLICY_DIR_FROMVPN
,
2514 /* When a bgp vrf instance is unconfigured, remove its routes
2515 * from the VPN table and this vrf could be importing routes from other
2516 * bgp vrf instnaces, unimport them.
2517 * VRF X and VRF Y are exporting routes to each other.
2518 * When VRF X is deleted, unimport its routes from all target vrfs,
2519 * also VRF Y should unimport its routes from VRF X table.
2520 * This will ensure VPN table is cleaned up appropriately.
2522 int bgp_vpn_leak_unimport(struct bgp
*from_bgp
, struct vty
*vty
)
2525 const char *tmp_name
;
2527 struct listnode
*node
, *next
;
2528 safi_t safi
= SAFI_UNICAST
;
2530 bool is_vrf_leak_bind
;
2533 if (from_bgp
->inst_type
!= BGP_INSTANCE_TYPE_VRF
)
2536 debug
= (BGP_DEBUG(vpn
, VPN_LEAK_TO_VRF
) |
2537 BGP_DEBUG(vpn
, VPN_LEAK_FROM_VRF
));
2539 tmp_name
= from_bgp
->name
? from_bgp
->name
: VRF_DEFAULT_NAME
;
2541 for (afi
= 0; afi
< AFI_MAX
; ++afi
) {
2542 /* vrf leak is for IPv4 and IPv6 Unicast only */
2543 if (afi
!= AFI_IP
&& afi
!= AFI_IP6
)
2546 for (ALL_LIST_ELEMENTS_RO(bm
->bgp
, next
, to_bgp
)) {
2547 if (from_bgp
== to_bgp
)
2550 /* Unimport and remove source vrf from the
2551 * other vrfs import list.
2553 struct vpn_policy
*to_vpolicy
;
2555 is_vrf_leak_bind
= false;
2556 to_vpolicy
= &(to_bgp
->vpn_policy
[afi
]);
2557 for (ALL_LIST_ELEMENTS_RO(to_vpolicy
->import_vrf
, node
,
2559 if (strcmp(vname
, tmp_name
) == 0) {
2560 is_vrf_leak_bind
= true;
2564 /* skip this bgp instance as there is no leak to this
2567 if (!is_vrf_leak_bind
)
2571 zlog_debug("%s: unimport routes from %s to_bgp %s afi %s import vrfs count %u",
2572 __func__
, from_bgp
->name_pretty
,
2573 to_bgp
->name_pretty
, afi2str(afi
),
2574 to_vpolicy
->import_vrf
->count
);
2576 vrf_unimport_from_vrf(to_bgp
, from_bgp
, afi
, safi
);
2578 /* readd vrf name as unimport removes import vrf name
2579 * from the destination vrf's import list where the
2580 * `import vrf` configuration still exist.
2582 vname
= XSTRDUP(MTYPE_TMP
, tmp_name
);
2583 listnode_add(to_bgp
->vpn_policy
[afi
].import_vrf
,
2585 SET_FLAG(to_bgp
->af_flags
[afi
][safi
],
2586 BGP_CONFIG_VRF_TO_VRF_IMPORT
);
2588 /* If to_bgp exports its routes to the bgp vrf
2589 * which is being deleted, un-import the
2590 * to_bgp routes from VPN.
2592 for (ALL_LIST_ELEMENTS_RO(to_bgp
->vpn_policy
[afi
]
2595 if (strcmp(vname
, tmp_name
) == 0) {
2596 vrf_unimport_from_vrf(from_bgp
, to_bgp
,
2606 /* When a router bgp is configured, there could be a bgp vrf
2607 * instance importing routes from this newly configured
2608 * bgp vrf instance. Export routes from configured
2610 * VRF Y has import from bgp vrf x,
2611 * when a bgp vrf x instance is created, export its routes
2612 * to VRF Y instance.
2614 void bgp_vpn_leak_export(struct bgp
*from_bgp
)
2617 const char *export_name
;
2619 struct listnode
*node
, *next
;
2620 struct ecommunity
*ecom
;
2621 vpn_policy_direction_t idir
, edir
;
2622 safi_t safi
= SAFI_UNICAST
;
2626 debug
= (BGP_DEBUG(vpn
, VPN_LEAK_TO_VRF
) |
2627 BGP_DEBUG(vpn
, VPN_LEAK_FROM_VRF
));
2629 idir
= BGP_VPN_POLICY_DIR_FROMVPN
;
2630 edir
= BGP_VPN_POLICY_DIR_TOVPN
;
2632 export_name
= (from_bgp
->name
? XSTRDUP(MTYPE_TMP
, from_bgp
->name
)
2633 : XSTRDUP(MTYPE_TMP
, VRF_DEFAULT_NAME
));
2635 for (afi
= 0; afi
< AFI_MAX
; ++afi
) {
2636 /* vrf leak is for IPv4 and IPv6 Unicast only */
2637 if (afi
!= AFI_IP
&& afi
!= AFI_IP6
)
2640 for (ALL_LIST_ELEMENTS_RO(bm
->bgp
, next
, to_bgp
)) {
2641 if (from_bgp
== to_bgp
)
2644 /* bgp instance has import list, check to see if newly
2645 * configured bgp instance is the list.
2647 struct vpn_policy
*to_vpolicy
;
2649 to_vpolicy
= &(to_bgp
->vpn_policy
[afi
]);
2650 for (ALL_LIST_ELEMENTS_RO(to_vpolicy
->import_vrf
,
2652 if (strcmp(vname
, export_name
) != 0)
2656 zlog_debug("%s: found from_bgp %s in to_bgp %s import list, import routes.",
2658 export_name
, to_bgp
->name_pretty
);
2660 ecom
= from_bgp
->vpn_policy
[afi
].rtlist
[edir
];
2661 /* remove import rt, it will be readded
2662 * as part of import from vrf.
2666 to_vpolicy
->rtlist
[idir
],
2667 (struct ecommunity_val
*)
2669 vrf_import_from_vrf(to_bgp
, from_bgp
,