1 /* Ethernet-VPN Packet and vty Processing File
2 * Copyright (C) 2016 6WIND
3 * Copyright (C) 2017 Cumulus Networks, Inc.
5 * This file is part of FRR.
7 * FRRouting is free software; you can redistribute it and/or modify it
8 * under the terms of the GNU General Public License as published by the
9 * Free Software Foundation; either version 2, or (at your option) any
12 * FRRouting is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License for more details.
17 * You should have received a copy of the GNU General Public License along
18 * with this program; see the file COPYING; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
34 #include "bgpd/bgp_attr_evpn.h"
35 #include "bgpd/bgpd.h"
36 #include "bgpd/bgp_table.h"
37 #include "bgpd/bgp_route.h"
38 #include "bgpd/bgp_attr.h"
39 #include "bgpd/bgp_mplsvpn.h"
40 #include "bgpd/bgp_label.h"
41 #include "bgpd/bgp_evpn.h"
42 #include "bgpd/bgp_evpn_private.h"
43 #include "bgpd/bgp_ecommunity.h"
44 #include "bgpd/bgp_encap_types.h"
45 #include "bgpd/bgp_debug.h"
46 #include "bgpd/bgp_errors.h"
47 #include "bgpd/bgp_aspath.h"
48 #include "bgpd/bgp_zebra.h"
49 #include "bgpd/bgp_nexthop.h"
52 * Definitions and external declarations.
54 extern struct zclient
*zclient
;
56 DEFINE_QOBJ_TYPE(bgpevpn
)
57 DEFINE_QOBJ_TYPE(evpnes
)
61 * Static function declarations
63 static void delete_evpn_route_entry(struct bgp
*bgp
,
64 afi_t afi
, safi_t safi
,
66 struct bgp_info
**ri
);
67 static int delete_all_vni_routes(struct bgp
*bgp
, struct bgpevpn
*vpn
);
73 /* compare two IPV4 VTEP IPs */
74 static int evpn_vtep_ip_cmp(const void *p1
, const void *p2
)
76 const struct in_addr
*ip1
= p1
;
77 const struct in_addr
*ip2
= p2
;
83 return (ip1
->s_addr
== ip2
->s_addr
);
87 * Make hash key for ESI.
89 static unsigned int esi_hash_keymake(void *p
)
91 struct evpnes
*pes
= p
;
92 const void *pnt
= (void *)pes
->esi
.val
;
94 return jhash(pnt
, ESI_BYTES
, 0xa5a5a55a);
100 static int esi_cmp(const void *p1
, const void *p2
)
102 const struct evpnes
*pes1
= p1
;
103 const struct evpnes
*pes2
= p2
;
105 if (pes1
== NULL
&& pes2
== NULL
)
108 if (pes1
== NULL
|| pes2
== NULL
)
111 return (memcmp(pes1
->esi
.val
, pes2
->esi
.val
, ESI_BYTES
) == 0);
117 static unsigned int vni_hash_key_make(void *p
)
119 struct bgpevpn
*vpn
= p
;
120 return (jhash_1word(vpn
->vni
, 0));
124 * Comparison function for vni hash
126 static int vni_hash_cmp(const void *p1
, const void *p2
)
128 const struct bgpevpn
*vpn1
= p1
;
129 const struct bgpevpn
*vpn2
= p2
;
135 return (vpn1
->vni
== vpn2
->vni
);
139 * Make vrf import route target hash key.
141 static unsigned int vrf_import_rt_hash_key_make(void *p
)
143 struct vrf_irt_node
*irt
= p
;
144 char *pnt
= irt
->rt
.val
;
146 return jhash(pnt
, 8, 0x5abc1234);
150 * Comparison function for vrf import rt hash
152 static int vrf_import_rt_hash_cmp(const void *p1
, const void *p2
)
154 const struct vrf_irt_node
*irt1
= p1
;
155 const struct vrf_irt_node
*irt2
= p2
;
157 if (irt1
== NULL
&& irt2
== NULL
)
160 if (irt1
== NULL
|| irt2
== NULL
)
163 return (memcmp(irt1
->rt
.val
, irt2
->rt
.val
, ECOMMUNITY_SIZE
) == 0);
167 * Create a new vrf import_rt in default instance
169 static struct vrf_irt_node
*vrf_import_rt_new(struct ecommunity_val
*rt
)
171 struct bgp
*bgp_def
= NULL
;
172 struct vrf_irt_node
*irt
;
174 bgp_def
= bgp_get_default();
176 flog_err(BGP_ERR_NO_DFLT
,
177 "vrf import rt new - def instance not created yet");
181 irt
= XCALLOC(MTYPE_BGP_EVPN_VRF_IMPORT_RT
,
182 sizeof(struct vrf_irt_node
));
187 irt
->vrfs
= list_new();
190 if (!hash_get(bgp_def
->vrf_import_rt_hash
, irt
, hash_alloc_intern
)) {
191 XFREE(MTYPE_BGP_EVPN_VRF_IMPORT_RT
, irt
);
199 * Free the vrf import rt node
201 static void vrf_import_rt_free(struct vrf_irt_node
*irt
)
203 struct bgp
*bgp_def
= NULL
;
205 bgp_def
= bgp_get_default();
207 flog_err(BGP_ERR_NO_DFLT
,
208 "vrf import rt free - def instance not created yet");
212 hash_release(bgp_def
->vrf_import_rt_hash
, irt
);
213 list_delete_and_null(&irt
->vrfs
);
214 XFREE(MTYPE_BGP_EVPN_VRF_IMPORT_RT
, irt
);
218 * Function to lookup Import RT node - used to map a RT to set of
219 * VNIs importing routes with that RT.
221 static struct vrf_irt_node
*lookup_vrf_import_rt(struct ecommunity_val
*rt
)
223 struct bgp
*bgp_def
= NULL
;
224 struct vrf_irt_node
*irt
;
225 struct vrf_irt_node tmp
;
227 bgp_def
= bgp_get_default();
231 "vrf import rt lookup - def instance not created yet");
235 memset(&tmp
, 0, sizeof(struct vrf_irt_node
));
236 memcpy(&tmp
.rt
, rt
, ECOMMUNITY_SIZE
);
237 irt
= hash_lookup(bgp_def
->vrf_import_rt_hash
, &tmp
);
242 * Is specified VRF present on the RT's list of "importing" VRFs?
244 static int is_vrf_present_in_irt_vrfs(struct list
*vrfs
, struct bgp
*bgp_vrf
)
246 struct listnode
*node
= NULL
, *nnode
= NULL
;
247 struct bgp
*tmp_bgp_vrf
= NULL
;
249 for (ALL_LIST_ELEMENTS(vrfs
, node
, nnode
, tmp_bgp_vrf
)) {
250 if (tmp_bgp_vrf
== bgp_vrf
)
257 * Make import route target hash key.
259 static unsigned int import_rt_hash_key_make(void *p
)
261 struct irt_node
*irt
= p
;
262 char *pnt
= irt
->rt
.val
;
264 return jhash(pnt
, 8, 0xdeadbeef);
268 * Comparison function for import rt hash
270 static int import_rt_hash_cmp(const void *p1
, const void *p2
)
272 const struct irt_node
*irt1
= p1
;
273 const struct irt_node
*irt2
= p2
;
275 if (irt1
== NULL
&& irt2
== NULL
)
278 if (irt1
== NULL
|| irt2
== NULL
)
281 return (memcmp(irt1
->rt
.val
, irt2
->rt
.val
, ECOMMUNITY_SIZE
) == 0);
285 * Create a new import_rt
287 static struct irt_node
*import_rt_new(struct bgp
*bgp
,
288 struct ecommunity_val
*rt
)
290 struct irt_node
*irt
;
295 irt
= XCALLOC(MTYPE_BGP_EVPN_IMPORT_RT
, sizeof(struct irt_node
));
300 irt
->vnis
= list_new();
303 if (!hash_get(bgp
->import_rt_hash
, irt
, hash_alloc_intern
)) {
304 XFREE(MTYPE_BGP_EVPN_IMPORT_RT
, irt
);
312 * Free the import rt node
314 static void import_rt_free(struct bgp
*bgp
, struct irt_node
*irt
)
316 hash_release(bgp
->import_rt_hash
, irt
);
317 list_delete_and_null(&irt
->vnis
);
318 XFREE(MTYPE_BGP_EVPN_IMPORT_RT
, irt
);
322 * Function to lookup Import RT node - used to map a RT to set of
323 * VNIs importing routes with that RT.
325 static struct irt_node
*lookup_import_rt(struct bgp
*bgp
,
326 struct ecommunity_val
*rt
)
328 struct irt_node
*irt
;
331 memset(&tmp
, 0, sizeof(struct irt_node
));
332 memcpy(&tmp
.rt
, rt
, ECOMMUNITY_SIZE
);
333 irt
= hash_lookup(bgp
->import_rt_hash
, &tmp
);
338 * Is specified VNI present on the RT's list of "importing" VNIs?
340 static int is_vni_present_in_irt_vnis(struct list
*vnis
, struct bgpevpn
*vpn
)
342 struct listnode
*node
, *nnode
;
343 struct bgpevpn
*tmp_vpn
;
345 for (ALL_LIST_ELEMENTS(vnis
, node
, nnode
, tmp_vpn
)) {
354 * Compare Route Targets.
356 static int evpn_route_target_cmp(struct ecommunity
*ecom1
,
357 struct ecommunity
*ecom2
)
365 if (!ecom1
&& !ecom2
)
368 if (ecom1
->str
&& !ecom2
->str
)
371 if (!ecom1
->str
&& ecom2
->str
)
374 if (!ecom1
->str
&& !ecom2
->str
)
377 return strcmp(ecom1
->str
, ecom2
->str
);
380 static void evpn_xxport_delete_ecomm(void *val
)
382 struct ecommunity
*ecomm
= val
;
383 ecommunity_free(&ecomm
);
387 * Mask off global-admin field of specified extended community (RT),
388 * just retain the local-admin field.
390 static inline void mask_ecom_global_admin(struct ecommunity_val
*dst
,
391 struct ecommunity_val
*src
)
397 if (type
== ECOMMUNITY_ENCODE_AS
) {
398 dst
->val
[2] = dst
->val
[3] = 0;
399 } else if (type
== ECOMMUNITY_ENCODE_AS4
400 || type
== ECOMMUNITY_ENCODE_IP
) {
401 dst
->val
[2] = dst
->val
[3] = 0;
402 dst
->val
[4] = dst
->val
[5] = 0;
407 * Map one RT to specified VRF.
408 * bgp_vrf = BGP vrf instance
410 static void map_vrf_to_rt(struct bgp
*bgp_vrf
, struct ecommunity_val
*eval
)
412 struct vrf_irt_node
*irt
= NULL
;
413 struct ecommunity_val eval_tmp
;
415 /* If using "automatic" RT,
416 * we only care about the local-admin sub-field.
417 * This is to facilitate using L3VNI(VRF-VNI)
418 * as the RT for EBGP peering too.
420 memcpy(&eval_tmp
, eval
, ECOMMUNITY_SIZE
);
421 if (!CHECK_FLAG(bgp_vrf
->vrf_flags
, BGP_VRF_IMPORT_RT_CFGD
))
422 mask_ecom_global_admin(&eval_tmp
, eval
);
424 irt
= lookup_vrf_import_rt(&eval_tmp
);
425 if (irt
&& is_vrf_present_in_irt_vrfs(irt
->vrfs
, bgp_vrf
))
426 /* Already mapped. */
430 irt
= vrf_import_rt_new(&eval_tmp
);
432 /* Add VRF to the list for this RT. */
433 listnode_add(irt
->vrfs
, bgp_vrf
);
437 * Unmap specified VRF from specified RT. If there are no other
438 * VRFs for this RT, then the RT hash is deleted.
439 * bgp_vrf: BGP VRF specific instance
441 static void unmap_vrf_from_rt(struct bgp
*bgp_vrf
, struct vrf_irt_node
*irt
)
443 /* Delete VRF from list for this RT. */
444 listnode_delete(irt
->vrfs
, bgp_vrf
);
445 if (!listnode_head(irt
->vrfs
)) {
446 vrf_import_rt_free(irt
);
451 * Map one RT to specified VNI.
453 static void map_vni_to_rt(struct bgp
*bgp
, struct bgpevpn
*vpn
,
454 struct ecommunity_val
*eval
)
456 struct irt_node
*irt
;
457 struct ecommunity_val eval_tmp
;
459 /* If using "automatic" RT, we only care about the local-admin
461 * This is to facilitate using VNI as the RT for EBGP peering too.
463 memcpy(&eval_tmp
, eval
, ECOMMUNITY_SIZE
);
464 if (!is_import_rt_configured(vpn
))
465 mask_ecom_global_admin(&eval_tmp
, eval
);
467 irt
= lookup_import_rt(bgp
, &eval_tmp
);
469 if (is_vni_present_in_irt_vnis(irt
->vnis
, vpn
))
470 /* Already mapped. */
474 irt
= import_rt_new(bgp
, &eval_tmp
);
478 /* Add VNI to the hash list for this RT. */
479 listnode_add(irt
->vnis
, vpn
);
483 * Unmap specified VNI from specified RT. If there are no other
484 * VNIs for this RT, then the RT hash is deleted.
486 static void unmap_vni_from_rt(struct bgp
*bgp
, struct bgpevpn
*vpn
,
487 struct irt_node
*irt
)
489 /* Delete VNI from hash list for this RT. */
490 listnode_delete(irt
->vnis
, vpn
);
491 if (!listnode_head(irt
->vnis
)) {
492 import_rt_free(bgp
, irt
);
497 * Create RT extended community automatically from passed information:
498 * of the form AS:VNI.
499 * NOTE: We use only the lower 16 bits of the AS. This is sufficient as
500 * the need is to get a RT value that will be unique across different
501 * VNIs but the same across routers (in the same AS) for a particular
504 static void form_auto_rt(struct bgp
*bgp
, vni_t vni
, struct list
*rtl
)
506 struct ecommunity_val eval
;
507 struct ecommunity
*ecomadd
;
509 if (bgp
->advertise_autort_rfc8365
)
510 vni
|= EVPN_AUTORT_VXLAN
;
511 encode_route_target_as((bgp
->as
& 0xFFFF), vni
, &eval
);
513 ecomadd
= ecommunity_new();
514 ecommunity_add_val(ecomadd
, &eval
);
515 listnode_add_sort(rtl
, ecomadd
);
519 * Derive RD and RT for a VNI automatically. Invoked at the time of
522 static void derive_rd_rt_for_vni(struct bgp
*bgp
, struct bgpevpn
*vpn
)
524 bgp_evpn_derive_auto_rd(bgp
, vpn
);
525 bgp_evpn_derive_auto_rt_import(bgp
, vpn
);
526 bgp_evpn_derive_auto_rt_export(bgp
, vpn
);
530 * Convert nexthop (remote VTEP IP) into an IPv6 address.
532 static void evpn_convert_nexthop_to_ipv6(struct attr
*attr
)
534 if (BGP_ATTR_NEXTHOP_AFI_IP6(attr
))
536 ipv4_to_ipv4_mapped_ipv6(&attr
->mp_nexthop_global
, attr
->nexthop
);
537 attr
->mp_nexthop_len
= IPV6_MAX_BYTELEN
;
541 * Add (update) or delete MACIP from zebra.
543 static int bgp_zebra_send_remote_macip(struct bgp
*bgp
, struct bgpevpn
*vpn
,
544 struct prefix_evpn
*p
,
545 struct in_addr remote_vtep_ip
, int add
,
546 uint8_t flags
, uint32_t seq
)
550 char buf1
[ETHER_ADDR_STRLEN
];
551 char buf2
[INET6_ADDRSTRLEN
];
552 char buf3
[INET6_ADDRSTRLEN
];
555 if (!zclient
|| zclient
->sock
< 0)
558 /* Don't try to register if Zebra doesn't know of this instance. */
559 if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp
))
565 zclient_create_header(
566 s
, add
? ZEBRA_REMOTE_MACIP_ADD
: ZEBRA_REMOTE_MACIP_DEL
,
568 stream_putl(s
, vpn
->vni
);
569 stream_put(s
, &p
->prefix
.macip_addr
.mac
.octet
, ETH_ALEN
); /* Mac Addr */
570 /* IP address length and IP address, if any. */
571 if (is_evpn_prefix_ipaddr_none(p
))
574 ipa_len
= is_evpn_prefix_ipaddr_v4(p
) ? IPV4_MAX_BYTELEN
576 stream_putl(s
, ipa_len
);
577 stream_put(s
, &p
->prefix
.macip_addr
.ip
.ip
.addr
, ipa_len
);
579 stream_put_in_addr(s
, &remote_vtep_ip
);
581 /* TX flags - MAC sticky status and/or gateway mac */
582 /* Also TX the sequence number of the best route. */
584 stream_putc(s
, flags
);
588 stream_putw_at(s
, 0, stream_get_endp(s
));
590 if (bgp_debug_zebra(NULL
))
592 "Tx %s MACIP, VNI %u MAC %s IP %s flags 0x%x seq %u remote VTEP %s",
593 add
? "ADD" : "DEL", vpn
->vni
,
594 prefix_mac2str(&p
->prefix
.macip_addr
.mac
,
596 ipaddr2str(&p
->prefix
.macip_addr
.ip
,
597 buf3
, sizeof(buf3
)), flags
, seq
,
598 inet_ntop(AF_INET
, &remote_vtep_ip
, buf2
,
601 return zclient_send_message(zclient
);
605 * Add (update) or delete remote VTEP from zebra.
607 static int bgp_zebra_send_remote_vtep(struct bgp
*bgp
, struct bgpevpn
*vpn
,
608 struct prefix_evpn
*p
, int add
)
613 if (!zclient
|| zclient
->sock
< 0)
616 /* Don't try to register if Zebra doesn't know of this instance. */
617 if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp
))
623 zclient_create_header(
624 s
, add
? ZEBRA_REMOTE_VTEP_ADD
: ZEBRA_REMOTE_VTEP_DEL
,
626 stream_putl(s
, vpn
->vni
);
627 if (is_evpn_prefix_ipaddr_v4(p
))
628 stream_put_in_addr(s
, &p
->prefix
.imet_addr
.ip
.ipaddr_v4
);
629 else if (is_evpn_prefix_ipaddr_v6(p
)) {
631 BGP_ERR_VTEP_INVALID
,
632 "Bad remote IP when trying to %s remote VTEP for VNI %u",
633 add
? "ADD" : "DEL", vpn
->vni
);
637 stream_putw_at(s
, 0, stream_get_endp(s
));
639 if (bgp_debug_zebra(NULL
))
640 zlog_debug("Tx %s Remote VTEP, VNI %u remote VTEP %s",
641 add
? "ADD" : "DEL", vpn
->vni
,
642 inet_ntoa(p
->prefix
.imet_addr
.ip
.ipaddr_v4
));
644 return zclient_send_message(zclient
);
648 * Build extended community for EVPN ES (type-4) route
650 static void build_evpn_type4_route_extcomm(struct evpnes
*es
,
653 struct ecommunity ecom_encap
;
654 struct ecommunity ecom_es_rt
;
655 struct ecommunity_val eval
;
656 struct ecommunity_val eval_es_rt
;
657 bgp_encap_types tnl_type
;
661 tnl_type
= BGP_ENCAP_TYPE_VXLAN
;
662 memset(&ecom_encap
, 0, sizeof(ecom_encap
));
663 encode_encap_extcomm(tnl_type
, &eval
);
665 ecom_encap
.val
= (uint8_t *)eval
.val
;
666 attr
->ecommunity
= ecommunity_dup(&ecom_encap
);
669 memset(&mac
, 0, sizeof(struct ethaddr
));
670 memset(&ecom_es_rt
, 0, sizeof(ecom_es_rt
));
671 es_get_system_mac(&es
->esi
, &mac
);
672 encode_es_rt_extcomm(&eval_es_rt
, &mac
);
674 ecom_es_rt
.val
= (uint8_t *)eval_es_rt
.val
;
676 ecommunity_merge(attr
->ecommunity
, &ecom_es_rt
);
678 attr
->flag
|= ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES
);
682 * Build extended communities for EVPN prefix route.
684 static void build_evpn_type5_route_extcomm(struct bgp
*bgp_vrf
,
687 struct ecommunity ecom_encap
;
688 struct ecommunity ecom_rmac
;
689 struct ecommunity_val eval
;
690 struct ecommunity_val eval_rmac
;
691 bgp_encap_types tnl_type
;
692 struct listnode
*node
, *nnode
;
693 struct ecommunity
*ecom
;
694 struct list
*vrf_export_rtl
= NULL
;
697 tnl_type
= BGP_ENCAP_TYPE_VXLAN
;
698 memset(&ecom_encap
, 0, sizeof(ecom_encap
));
699 encode_encap_extcomm(tnl_type
, &eval
);
701 ecom_encap
.val
= (uint8_t *)eval
.val
;
704 attr
->ecommunity
= ecommunity_dup(&ecom_encap
);
706 /* Add the export RTs for L3VNI/VRF */
707 vrf_export_rtl
= bgp_vrf
->vrf_export_rtl
;
708 for (ALL_LIST_ELEMENTS(vrf_export_rtl
, node
, nnode
, ecom
))
710 ecommunity_merge(attr
->ecommunity
, ecom
);
712 /* add the router mac extended community */
713 if (!is_zero_mac(&attr
->rmac
)) {
714 memset(&ecom_rmac
, 0, sizeof(ecom_rmac
));
715 encode_rmac_extcomm(&eval_rmac
, &attr
->rmac
);
717 ecom_rmac
.val
= (uint8_t *)eval_rmac
.val
;
719 ecommunity_merge(attr
->ecommunity
, &ecom_rmac
);
722 attr
->flag
|= ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES
);
726 * Build extended communities for EVPN route.
727 * This function is applicable for type-2 and type-3 routes. The layer-2 RT
728 * and ENCAP extended communities are applicable for all routes.
729 * The default gateway extended community and MAC mobility (sticky) extended
730 * community are added as needed based on passed settings - only for type-2
731 * routes. Likewise, the layer-3 RT and Router MAC extended communities are
732 * added, if present, based on passed settings - only for non-link-local
735 static void build_evpn_route_extcomm(struct bgpevpn
*vpn
, struct attr
*attr
,
738 struct ecommunity ecom_encap
;
739 struct ecommunity ecom_sticky
;
740 struct ecommunity ecom_default_gw
;
741 struct ecommunity ecom_rmac
;
742 struct ecommunity ecom_na
;
743 struct ecommunity_val eval
;
744 struct ecommunity_val eval_sticky
;
745 struct ecommunity_val eval_default_gw
;
746 struct ecommunity_val eval_rmac
;
747 struct ecommunity_val eval_na
;
749 bgp_encap_types tnl_type
;
750 struct listnode
*node
, *nnode
;
751 struct ecommunity
*ecom
;
753 struct list
*vrf_export_rtl
= NULL
;
756 tnl_type
= BGP_ENCAP_TYPE_VXLAN
;
757 memset(&ecom_encap
, 0, sizeof(ecom_encap
));
758 encode_encap_extcomm(tnl_type
, &eval
);
760 ecom_encap
.val
= (uint8_t *)eval
.val
;
763 attr
->ecommunity
= ecommunity_dup(&ecom_encap
);
765 /* Add the export RTs for L2VNI */
766 for (ALL_LIST_ELEMENTS(vpn
->export_rtl
, node
, nnode
, ecom
))
767 attr
->ecommunity
= ecommunity_merge(attr
->ecommunity
, ecom
);
769 /* Add the export RTs for L3VNI if told to - caller determines
770 * when this should be done.
773 vrf_export_rtl
= bgpevpn_get_vrf_export_rtl(vpn
);
774 if (vrf_export_rtl
&& !list_isempty(vrf_export_rtl
)) {
775 for (ALL_LIST_ELEMENTS(vrf_export_rtl
, node
, nnode
,
777 attr
->ecommunity
= ecommunity_merge(
778 attr
->ecommunity
, ecom
);
782 /* Add MAC mobility (sticky) if needed. */
785 memset(&ecom_sticky
, 0, sizeof(ecom_sticky
));
786 encode_mac_mobility_extcomm(1, seqnum
, &eval_sticky
);
787 ecom_sticky
.size
= 1;
788 ecom_sticky
.val
= (uint8_t *)eval_sticky
.val
;
790 ecommunity_merge(attr
->ecommunity
, &ecom_sticky
);
793 /* Add RMAC, if told to. */
795 memset(&ecom_rmac
, 0, sizeof(ecom_rmac
));
796 encode_rmac_extcomm(&eval_rmac
, &attr
->rmac
);
798 ecom_rmac
.val
= (uint8_t *)eval_rmac
.val
;
800 ecommunity_merge(attr
->ecommunity
, &ecom_rmac
);
803 /* Add default gateway, if needed. */
804 if (attr
->default_gw
) {
805 memset(&ecom_default_gw
, 0, sizeof(ecom_default_gw
));
806 encode_default_gw_extcomm(&eval_default_gw
);
807 ecom_default_gw
.size
= 1;
808 ecom_default_gw
.val
= (uint8_t *)eval_default_gw
.val
;
810 ecommunity_merge(attr
->ecommunity
, &ecom_default_gw
);
813 if (attr
->router_flag
) {
814 memset(&ecom_na
, 0, sizeof(ecom_na
));
815 encode_na_flag_extcomm(&eval_na
, attr
->router_flag
);
817 ecom_na
.val
= (uint8_t *)eval_na
.val
;
818 attr
->ecommunity
= ecommunity_merge(attr
->ecommunity
,
822 attr
->flag
|= ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES
);
826 * Add MAC mobility extended community to attribute.
828 static void add_mac_mobility_to_attr(uint32_t seq_num
, struct attr
*attr
)
830 struct ecommunity ecom_tmp
;
831 struct ecommunity_val eval
;
832 uint8_t *ecom_val_ptr
;
839 encode_mac_mobility_extcomm(0, seq_num
, &eval
);
841 /* Find current MM ecommunity */
844 if (attr
->ecommunity
) {
845 for (i
= 0; i
< attr
->ecommunity
->size
; i
++) {
846 pnt
= attr
->ecommunity
->val
+ (i
* 8);
850 if (type
== ECOMMUNITY_ENCODE_EVPN
852 == ECOMMUNITY_EVPN_SUBTYPE_MACMOBILITY
) {
853 ecom_val_ptr
= (uint8_t *)(attr
->ecommunity
->val
860 /* Update the existing MM ecommunity */
862 memcpy(ecom_val_ptr
, eval
.val
, sizeof(char) * ECOMMUNITY_SIZE
);
864 /* Add MM to existing */
866 memset(&ecom_tmp
, 0, sizeof(ecom_tmp
));
868 ecom_tmp
.val
= (uint8_t *)eval
.val
;
870 if (attr
->ecommunity
)
872 ecommunity_merge(attr
->ecommunity
, &ecom_tmp
);
874 attr
->ecommunity
= ecommunity_dup(&ecom_tmp
);
878 /* Install EVPN route into zebra. */
879 static int evpn_zebra_install(struct bgp
*bgp
, struct bgpevpn
*vpn
,
880 struct prefix_evpn
*p
,
881 struct in_addr remote_vtep_ip
, uint8_t flags
,
886 if (p
->prefix
.route_type
== BGP_EVPN_MAC_IP_ROUTE
)
887 ret
= bgp_zebra_send_remote_macip(bgp
, vpn
, p
, remote_vtep_ip
,
890 ret
= bgp_zebra_send_remote_vtep(bgp
, vpn
, p
, 1);
895 /* Uninstall EVPN route from zebra. */
896 static int evpn_zebra_uninstall(struct bgp
*bgp
, struct bgpevpn
*vpn
,
897 struct prefix_evpn
*p
,
898 struct in_addr remote_vtep_ip
)
902 if (p
->prefix
.route_type
== BGP_EVPN_MAC_IP_ROUTE
)
903 ret
= bgp_zebra_send_remote_macip(bgp
, vpn
, p
, remote_vtep_ip
,
906 ret
= bgp_zebra_send_remote_vtep(bgp
, vpn
, p
, 0);
912 * Due to MAC mobility, the prior "local" best route has been supplanted
913 * by a "remote" best route. The prior route has to be deleted and withdrawn
916 static void evpn_delete_old_local_route(struct bgp
*bgp
, struct bgpevpn
*vpn
,
918 struct bgp_info
*old_local
)
920 struct bgp_node
*global_rn
;
922 afi_t afi
= AFI_L2VPN
;
923 safi_t safi
= SAFI_EVPN
;
925 /* Locate route node in the global EVPN routing table. Note that
926 * this table is a 2-level tree (RD-level + Prefix-level) similar to
929 global_rn
= bgp_afi_node_lookup(bgp
->rib
[afi
][safi
], afi
, safi
,
930 (struct prefix
*)&rn
->p
, &vpn
->prd
);
932 /* Delete route entry in the global EVPN table. */
933 delete_evpn_route_entry(bgp
, afi
, safi
, global_rn
, &ri
);
935 /* Schedule for processing - withdraws to peers happen from
939 bgp_process(bgp
, global_rn
, afi
, safi
);
940 bgp_unlock_node(global_rn
);
943 /* Delete route entry in the VNI route table, caller to remove. */
944 bgp_info_delete(rn
, old_local
);
947 static struct in_addr
*es_vtep_new(struct in_addr vtep
)
951 ip
= XCALLOC(MTYPE_BGP_EVPN_ES_VTEP
, sizeof(struct in_addr
));
955 ip
->s_addr
= vtep
.s_addr
;
959 static void es_vtep_free(struct in_addr
*ip
)
961 XFREE(MTYPE_BGP_EVPN_ES_VTEP
, ip
);
964 /* check if VTEP is already part of the list */
965 static int is_vtep_present_in_list(struct list
*list
,
968 struct listnode
*node
= NULL
;
971 for (ALL_LIST_ELEMENTS_RO(list
, node
, tmp
)) {
972 if (tmp
->s_addr
== vtep
.s_addr
)
979 * Best path for ES route was changed,
980 * update the list of VTEPs for this ES
982 static int evpn_es_install_vtep(struct bgp
*bgp
,
984 struct prefix_evpn
*p
,
985 struct in_addr rvtep
)
987 struct in_addr
*vtep_ip
;
989 if (is_vtep_present_in_list(es
->vtep_list
, rvtep
))
993 vtep_ip
= es_vtep_new(rvtep
);
995 listnode_add_sort(es
->vtep_list
, vtep_ip
);
1000 * Best path for ES route was changed,
1001 * update the list of VTEPs for this ES
1003 static int evpn_es_uninstall_vtep(struct bgp
*bgp
,
1005 struct prefix_evpn
*p
,
1006 struct in_addr rvtep
)
1008 struct listnode
*node
, *nnode
, *node_to_del
= NULL
;
1009 struct in_addr
*tmp
;
1011 for (ALL_LIST_ELEMENTS(es
->vtep_list
, node
, nnode
, tmp
)) {
1012 if (tmp
->s_addr
== rvtep
.s_addr
) {
1019 list_delete_node(es
->vtep_list
, node_to_del
);
1025 * Calculate the best path for a ES(type-4) route.
1027 static int evpn_es_route_select_install(struct bgp
*bgp
,
1029 struct bgp_node
*rn
)
1032 afi_t afi
= AFI_L2VPN
;
1033 safi_t safi
= SAFI_EVPN
;
1034 struct bgp_info
*old_select
; /* old best */
1035 struct bgp_info
*new_select
; /* new best */
1036 struct bgp_info_pair old_and_new
;
1038 /* Compute the best path. */
1039 bgp_best_selection(bgp
, rn
, &bgp
->maxpaths
[afi
][safi
],
1040 &old_and_new
, afi
, safi
);
1041 old_select
= old_and_new
.old
;
1042 new_select
= old_and_new
.new;
1045 * If the best path hasn't changed - see if something needs to be
1048 if (old_select
&& old_select
== new_select
1049 && old_select
->type
== ZEBRA_ROUTE_BGP
1050 && old_select
->sub_type
== BGP_ROUTE_IMPORTED
1051 && !CHECK_FLAG(rn
->flags
, BGP_NODE_USER_CLEAR
)
1052 && !CHECK_FLAG(old_select
->flags
, BGP_INFO_ATTR_CHANGED
)
1053 && !bgp
->addpath_tx_used
[afi
][safi
]) {
1054 if (bgp_zebra_has_route_changed(rn
, old_select
)) {
1055 ret
= evpn_es_install_vtep(bgp
, es
,
1056 (struct prefix_evpn
*)&rn
->p
,
1057 old_select
->attr
->nexthop
);
1059 UNSET_FLAG(old_select
->flags
, BGP_INFO_MULTIPATH_CHG
);
1060 bgp_zebra_clear_route_change_flags(rn
);
1064 /* If the user did a "clear" this flag will be set */
1065 UNSET_FLAG(rn
->flags
, BGP_NODE_USER_CLEAR
);
1068 * bestpath has changed; update relevant fields and install or uninstall
1069 * into the zebra RIB.
1071 if (old_select
|| new_select
)
1072 bgp_bump_version(rn
);
1075 bgp_info_unset_flag(rn
, old_select
, BGP_INFO_SELECTED
);
1077 bgp_info_set_flag(rn
, new_select
, BGP_INFO_SELECTED
);
1078 bgp_info_unset_flag(rn
, new_select
, BGP_INFO_ATTR_CHANGED
);
1079 UNSET_FLAG(new_select
->flags
, BGP_INFO_MULTIPATH_CHG
);
1082 if (new_select
&& new_select
->type
== ZEBRA_ROUTE_BGP
1083 && new_select
->sub_type
== BGP_ROUTE_IMPORTED
) {
1084 ret
= evpn_es_install_vtep(bgp
, es
,
1085 (struct prefix_evpn
*)&rn
->p
,
1086 new_select
->attr
->nexthop
);
1088 if (old_select
&& old_select
->type
== ZEBRA_ROUTE_BGP
1089 && old_select
->sub_type
== BGP_ROUTE_IMPORTED
)
1090 ret
= evpn_es_uninstall_vtep(
1091 bgp
, es
, (struct prefix_evpn
*)&rn
->p
,
1092 old_select
->attr
->nexthop
);
1095 /* Clear any route change flags. */
1096 bgp_zebra_clear_route_change_flags(rn
);
1098 /* Reap old select bgp_info, if it has been removed */
1099 if (old_select
&& CHECK_FLAG(old_select
->flags
, BGP_INFO_REMOVED
))
1100 bgp_info_reap(rn
, old_select
);
1106 * Calculate the best path for an EVPN route. Install/update best path in zebra,
1109 static int evpn_route_select_install(struct bgp
*bgp
, struct bgpevpn
*vpn
,
1110 struct bgp_node
*rn
)
1112 struct bgp_info
*old_select
, *new_select
;
1113 struct bgp_info_pair old_and_new
;
1114 struct prefix_evpn
*evp
;
1115 afi_t afi
= AFI_L2VPN
;
1116 safi_t safi
= SAFI_EVPN
;
1120 /* Compute the best path. */
1121 bgp_best_selection(bgp
, rn
, &bgp
->maxpaths
[afi
][safi
], &old_and_new
,
1123 old_select
= old_and_new
.old
;
1124 new_select
= old_and_new
.new;
1126 evp
= (struct prefix_evpn
*)&rn
->p
;
1127 /* If the best path hasn't changed - see if there is still something to
1131 if (old_select
&& old_select
== new_select
1132 && old_select
->type
== ZEBRA_ROUTE_BGP
1133 && old_select
->sub_type
== BGP_ROUTE_IMPORTED
1134 && !CHECK_FLAG(rn
->flags
, BGP_NODE_USER_CLEAR
)
1135 && !CHECK_FLAG(old_select
->flags
, BGP_INFO_ATTR_CHANGED
)
1136 && !bgp
->addpath_tx_used
[afi
][safi
]) {
1137 if (bgp_zebra_has_route_changed(rn
, old_select
)) {
1138 if (old_select
->attr
->sticky
)
1139 SET_FLAG(flags
, ZEBRA_MACIP_TYPE_STICKY
);
1140 if (old_select
->attr
->default_gw
)
1141 SET_FLAG(flags
, ZEBRA_MACIP_TYPE_GW
);
1142 if (is_evpn_prefix_ipaddr_v6(evp
) &&
1143 old_select
->attr
->router_flag
)
1144 SET_FLAG(flags
, ZEBRA_MACIP_TYPE_ROUTER_FLAG
);
1146 ret
= evpn_zebra_install(
1147 bgp
, vpn
, (struct prefix_evpn
*)&rn
->p
,
1148 old_select
->attr
->nexthop
, flags
,
1149 mac_mobility_seqnum(old_select
->attr
));
1151 UNSET_FLAG(old_select
->flags
, BGP_INFO_MULTIPATH_CHG
);
1152 bgp_zebra_clear_route_change_flags(rn
);
1156 /* If the user did a "clear" this flag will be set */
1157 UNSET_FLAG(rn
->flags
, BGP_NODE_USER_CLEAR
);
1159 /* bestpath has changed; update relevant fields and install or uninstall
1160 * into the zebra RIB.
1162 if (old_select
|| new_select
)
1163 bgp_bump_version(rn
);
1166 bgp_info_unset_flag(rn
, old_select
, BGP_INFO_SELECTED
);
1168 bgp_info_set_flag(rn
, new_select
, BGP_INFO_SELECTED
);
1169 bgp_info_unset_flag(rn
, new_select
, BGP_INFO_ATTR_CHANGED
);
1170 UNSET_FLAG(new_select
->flags
, BGP_INFO_MULTIPATH_CHG
);
1173 if (new_select
&& new_select
->type
== ZEBRA_ROUTE_BGP
1174 && new_select
->sub_type
== BGP_ROUTE_IMPORTED
) {
1176 if (new_select
->attr
->sticky
)
1177 SET_FLAG(flags
, ZEBRA_MACIP_TYPE_STICKY
);
1178 if (new_select
->attr
->default_gw
)
1179 SET_FLAG(flags
, ZEBRA_MACIP_TYPE_GW
);
1180 if (is_evpn_prefix_ipaddr_v6(evp
) &&
1181 new_select
->attr
->router_flag
)
1182 SET_FLAG(flags
, ZEBRA_MACIP_TYPE_ROUTER_FLAG
);
1184 ret
= evpn_zebra_install(bgp
, vpn
, (struct prefix_evpn
*)&rn
->p
,
1185 new_select
->attr
->nexthop
, flags
,
1186 mac_mobility_seqnum(new_select
->attr
));
1187 /* If an old best existed and it was a "local" route, the only
1189 * it would be supplanted is due to MAC mobility procedures. So,
1191 * need to do an implicit delete and withdraw that route from
1194 if (old_select
&& old_select
->peer
== bgp
->peer_self
1195 && old_select
->type
== ZEBRA_ROUTE_BGP
1196 && old_select
->sub_type
== BGP_ROUTE_STATIC
)
1197 evpn_delete_old_local_route(bgp
, vpn
, rn
, old_select
);
1199 if (old_select
&& old_select
->type
== ZEBRA_ROUTE_BGP
1200 && old_select
->sub_type
== BGP_ROUTE_IMPORTED
)
1201 ret
= evpn_zebra_uninstall(bgp
, vpn
,
1202 (struct prefix_evpn
*)&rn
->p
,
1203 old_select
->attr
->nexthop
);
1206 /* Clear any route change flags. */
1207 bgp_zebra_clear_route_change_flags(rn
);
1209 /* Reap old select bgp_info, if it has been removed */
1210 if (old_select
&& CHECK_FLAG(old_select
->flags
, BGP_INFO_REMOVED
))
1211 bgp_info_reap(rn
, old_select
);
1217 * Return true if the local ri for this rn is of type gateway mac
1219 static int evpn_route_is_def_gw(struct bgp
*bgp
, struct bgp_node
*rn
)
1221 struct bgp_info
*tmp_ri
= NULL
;
1222 struct bgp_info
*local_ri
= NULL
;
1225 for (tmp_ri
= rn
->info
; tmp_ri
; tmp_ri
= tmp_ri
->next
) {
1226 if (tmp_ri
->peer
== bgp
->peer_self
1227 && tmp_ri
->type
== ZEBRA_ROUTE_BGP
1228 && tmp_ri
->sub_type
== BGP_ROUTE_STATIC
)
1235 return local_ri
->attr
->default_gw
;
1240 * Return true if the local ri for this rn has sticky set
1242 static int evpn_route_is_sticky(struct bgp
*bgp
, struct bgp_node
*rn
)
1244 struct bgp_info
*tmp_ri
;
1245 struct bgp_info
*local_ri
;
1248 for (tmp_ri
= rn
->info
; tmp_ri
; tmp_ri
= tmp_ri
->next
) {
1249 if (tmp_ri
->peer
== bgp
->peer_self
1250 && tmp_ri
->type
== ZEBRA_ROUTE_BGP
1251 && tmp_ri
->sub_type
== BGP_ROUTE_STATIC
)
1258 return local_ri
->attr
->sticky
;
1262 * create or update EVPN type4 route entry.
1263 * This could be in the ES table or the global table.
1264 * TODO: handle remote ES (type4) routes as well
1266 static int update_evpn_type4_route_entry(struct bgp
*bgp
,
1268 afi_t afi
, safi_t safi
,
1269 struct bgp_node
*rn
,
1272 struct bgp_info
**ri
,
1275 char buf
[ESI_STR_LEN
];
1276 char buf1
[INET6_ADDRSTRLEN
];
1277 struct bgp_info
*tmp_ri
= NULL
;
1278 struct bgp_info
*local_ri
= NULL
; /* local route entry if any */
1279 struct bgp_info
*remote_ri
= NULL
; /* remote route entry if any */
1280 struct attr
*attr_new
= NULL
;
1281 struct prefix_evpn
*evp
= NULL
;
1285 evp
= (struct prefix_evpn
*)&rn
->p
;
1287 /* locate the local and remote entries if any */
1288 for (tmp_ri
= rn
->info
; tmp_ri
; tmp_ri
= tmp_ri
->next
) {
1289 if (tmp_ri
->peer
== bgp
->peer_self
&&
1290 tmp_ri
->type
== ZEBRA_ROUTE_BGP
&&
1291 tmp_ri
->sub_type
== BGP_ROUTE_STATIC
)
1293 if (tmp_ri
->type
== ZEBRA_ROUTE_BGP
&&
1294 tmp_ri
->sub_type
== BGP_ROUTE_IMPORTED
&&
1295 CHECK_FLAG(tmp_ri
->flags
, BGP_INFO_VALID
))
1299 /* we don't expect to see a remote_ri at this point.
1300 * An ES route has esi + vtep_ip as the key,
1301 * We shouldn't see the same route from any other vtep.
1306 "%u ERROR: local es route for ESI: %s Vtep %s also learnt from remote",
1308 esi_to_str(&evp
->prefix
.es_addr
.esi
, buf
, sizeof(buf
)),
1309 ipaddr2str(&es
->originator_ip
, buf1
, sizeof(buf1
)));
1313 if (!local_ri
&& !add
)
1316 /* create or update the entry */
1319 /* Add or update attribute to hash */
1320 attr_new
= bgp_attr_intern(attr
);
1322 /* Create new route with its attribute. */
1323 tmp_ri
= info_make(ZEBRA_ROUTE_BGP
, BGP_ROUTE_STATIC
,
1324 0, bgp
->peer_self
, attr_new
, rn
);
1325 SET_FLAG(tmp_ri
->flags
, BGP_INFO_VALID
);
1327 /* add the newly created path to the route-node */
1328 bgp_info_add(rn
, tmp_ri
);
1331 if (attrhash_cmp(tmp_ri
->attr
, attr
)
1332 && !CHECK_FLAG(tmp_ri
->flags
, BGP_INFO_REMOVED
))
1335 /* The attribute has changed.
1336 * Add (or update) attribute to hash. */
1337 attr_new
= bgp_attr_intern(attr
);
1338 bgp_info_set_flag(rn
, tmp_ri
, BGP_INFO_ATTR_CHANGED
);
1340 /* Restore route, if needed. */
1341 if (CHECK_FLAG(tmp_ri
->flags
, BGP_INFO_REMOVED
))
1342 bgp_info_restore(rn
, tmp_ri
);
1344 /* Unintern existing, set to new. */
1345 bgp_attr_unintern(&tmp_ri
->attr
);
1346 tmp_ri
->attr
= attr_new
;
1347 tmp_ri
->uptime
= bgp_clock();
1351 /* Return back the route entry. */
1356 /* update evpn es (type-4) route */
1357 static int update_evpn_type4_route(struct bgp
*bgp
,
1359 struct prefix_evpn
*p
)
1362 int route_changed
= 0;
1363 char buf
[ESI_STR_LEN
];
1364 char buf1
[INET6_ADDRSTRLEN
];
1365 afi_t afi
= AFI_L2VPN
;
1366 safi_t safi
= SAFI_EVPN
;
1368 struct attr
*attr_new
= NULL
;
1369 struct bgp_node
*rn
= NULL
;
1370 struct bgp_info
*ri
= NULL
;
1372 memset(&attr
, 0, sizeof(struct attr
));
1374 /* Build path-attribute for this route. */
1375 bgp_attr_default_set(&attr
, BGP_ORIGIN_IGP
);
1376 attr
.nexthop
= es
->originator_ip
.ipaddr_v4
;
1377 attr
.mp_nexthop_global_in
= es
->originator_ip
.ipaddr_v4
;
1378 attr
.mp_nexthop_len
= BGP_ATTR_NHLEN_IPV4
;
1380 /* Set up extended community. */
1381 build_evpn_type4_route_extcomm(es
, &attr
);
1383 /* First, create (or fetch) route node within the ESI. */
1384 /* NOTE: There is no RD here. */
1385 rn
= bgp_node_get(es
->route_table
, (struct prefix
*)p
);
1387 /* Create or update route entry. */
1388 ret
= update_evpn_type4_route_entry(bgp
, es
, afi
, safi
, rn
,
1394 "%u ERROR: Failed to updated ES route ESI: %s VTEP %s",
1396 esi_to_str(&p
->prefix
.es_addr
.esi
, buf
, sizeof(buf
)),
1397 ipaddr2str(&es
->originator_ip
, buf1
, sizeof(buf1
)));
1401 attr_new
= ri
->attr
;
1403 /* Perform route selection;
1404 * this is just to set the flags correctly
1405 * as local route in the ES always wins.
1407 evpn_es_route_select_install(bgp
, es
, rn
);
1408 bgp_unlock_node(rn
);
1410 /* If this is a new route or some attribute has changed, export the
1411 * route to the global table. The route will be advertised to peers
1412 * from there. Note that this table is a 2-level tree (RD-level +
1413 * Prefix-level) similar to L3VPN routes.
1415 if (route_changed
) {
1416 struct bgp_info
*global_ri
;
1418 rn
= bgp_afi_node_get(bgp
->rib
[afi
][safi
], afi
, safi
,
1419 (struct prefix
*)p
, &es
->prd
);
1420 update_evpn_type4_route_entry(bgp
, es
, afi
, safi
,
1425 /* Schedule for processing and unlock node. */
1426 bgp_process(bgp
, rn
, afi
, safi
);
1427 bgp_unlock_node(rn
);
1430 /* Unintern temporary. */
1431 aspath_unintern(&attr
.aspath
);
1435 static int update_evpn_type5_route_entry(struct bgp
*bgp_def
,
1436 struct bgp
*bgp_vrf
, afi_t afi
,
1437 safi_t safi
, struct bgp_node
*rn
,
1438 struct attr
*attr
, int *route_changed
)
1440 struct attr
*attr_new
= NULL
;
1441 struct bgp_info
*ri
= NULL
;
1442 mpls_label_t label
= MPLS_INVALID_LABEL
;
1443 struct bgp_info
*local_ri
= NULL
;
1444 struct bgp_info
*tmp_ri
= NULL
;
1447 /* locate the local route entry if any */
1448 for (tmp_ri
= rn
->info
; tmp_ri
; tmp_ri
= tmp_ri
->next
) {
1449 if (tmp_ri
->peer
== bgp_def
->peer_self
1450 && tmp_ri
->type
== ZEBRA_ROUTE_BGP
1451 && tmp_ri
->sub_type
== BGP_ROUTE_STATIC
)
1456 * create a new route entry if one doesnt exist.
1457 * Otherwise see if route attr has changed
1461 /* route has changed as this is the first entry */
1464 /* Add (or update) attribute to hash. */
1465 attr_new
= bgp_attr_intern(attr
);
1467 /* create the route info from attribute */
1468 ri
= info_make(ZEBRA_ROUTE_BGP
, BGP_ROUTE_STATIC
, 0,
1469 bgp_def
->peer_self
, attr_new
, rn
);
1470 SET_FLAG(ri
->flags
, BGP_INFO_VALID
);
1472 /* Type-5 routes advertise the L3-VNI */
1473 bgp_info_extra_get(ri
);
1474 vni2label(bgp_vrf
->l3vni
, &label
);
1475 memcpy(&ri
->extra
->label
, &label
, sizeof(label
));
1476 ri
->extra
->num_labels
= 1;
1478 /* add the route entry to route node*/
1479 bgp_info_add(rn
, ri
);
1483 if (!attrhash_cmp(tmp_ri
->attr
, attr
)) {
1485 /* attribute changed */
1488 /* The attribute has changed. */
1489 /* Add (or update) attribute to hash. */
1490 attr_new
= bgp_attr_intern(attr
);
1491 bgp_info_set_flag(rn
, tmp_ri
, BGP_INFO_ATTR_CHANGED
);
1493 /* Restore route, if needed. */
1494 if (CHECK_FLAG(tmp_ri
->flags
, BGP_INFO_REMOVED
))
1495 bgp_info_restore(rn
, tmp_ri
);
1497 /* Unintern existing, set to new. */
1498 bgp_attr_unintern(&tmp_ri
->attr
);
1499 tmp_ri
->attr
= attr_new
;
1500 tmp_ri
->uptime
= bgp_clock();
1506 /* update evpn type-5 route entry */
1507 static int update_evpn_type5_route(struct bgp
*bgp_vrf
, struct prefix_evpn
*evp
,
1508 struct attr
*src_attr
)
1510 afi_t afi
= AFI_L2VPN
;
1511 safi_t safi
= SAFI_EVPN
;
1513 struct bgp_node
*rn
= NULL
;
1514 struct bgp
*bgp_def
= NULL
;
1515 int route_changed
= 0;
1517 bgp_def
= bgp_get_default();
1521 /* Build path attribute for this route - use the source attr, if
1522 * present, else treat as locally originated.
1525 bgp_attr_dup(&attr
, src_attr
);
1527 memset(&attr
, 0, sizeof(struct attr
));
1528 bgp_attr_default_set(&attr
, BGP_ORIGIN_IGP
);
1530 /* Set nexthop to ourselves and fill in the Router MAC. */
1531 attr
.nexthop
= bgp_vrf
->originator_ip
;
1532 attr
.mp_nexthop_global_in
= bgp_vrf
->originator_ip
;
1533 attr
.mp_nexthop_len
= BGP_ATTR_NHLEN_IPV4
;
1534 memcpy(&attr
.rmac
, &bgp_vrf
->rmac
, sizeof(struct ethaddr
));
1536 /* Setup RT and encap extended community */
1537 build_evpn_type5_route_extcomm(bgp_vrf
, &attr
);
1539 /* get the route node in global table */
1540 rn
= bgp_afi_node_get(bgp_def
->rib
[afi
][safi
], afi
, safi
,
1541 (struct prefix
*)evp
, &bgp_vrf
->vrf_prd
);
1544 /* create or update the route entry within the route node */
1545 update_evpn_type5_route_entry(bgp_def
, bgp_vrf
, afi
, safi
, rn
, &attr
,
1548 /* schedule for processing and unlock node */
1549 if (route_changed
) {
1550 bgp_process(bgp_def
, rn
, afi
, safi
);
1551 bgp_unlock_node(rn
);
1554 /* uninten temporary */
1556 aspath_unintern(&attr
.aspath
);
1561 * Create or update EVPN route entry. This could be in the VNI route table
1562 * or the global route table.
1564 static int update_evpn_route_entry(struct bgp
*bgp
, struct bgpevpn
*vpn
,
1565 afi_t afi
, safi_t safi
, struct bgp_node
*rn
,
1566 struct attr
*attr
, int add
,
1567 struct bgp_info
**ri
, u_char flags
,
1570 struct bgp_info
*tmp_ri
;
1571 struct bgp_info
*local_ri
;
1572 struct attr
*attr_new
;
1573 mpls_label_t label
[BGP_MAX_LABELS
];
1574 uint32_t num_labels
= 1;
1575 int route_change
= 1;
1577 struct prefix_evpn
*evp
;
1580 evp
= (struct prefix_evpn
*)&rn
->p
;
1581 memset(&label
, 0, sizeof(label
));
1583 /* See if this is an update of an existing route, or a new add. */
1585 for (tmp_ri
= rn
->info
; tmp_ri
; tmp_ri
= tmp_ri
->next
) {
1586 if (tmp_ri
->peer
== bgp
->peer_self
1587 && tmp_ri
->type
== ZEBRA_ROUTE_BGP
1588 && tmp_ri
->sub_type
== BGP_ROUTE_STATIC
)
1592 /* If route doesn't exist already, create a new one, if told to.
1593 * Otherwise act based on whether the attributes of the route have
1596 if (!local_ri
&& !add
)
1599 /* For non-GW MACs, update MAC mobility seq number, if needed. */
1600 if (seq
&& !CHECK_FLAG(flags
, ZEBRA_MACIP_TYPE_GW
))
1601 add_mac_mobility_to_attr(seq
, attr
);
1604 /* Add (or update) attribute to hash. */
1605 attr_new
= bgp_attr_intern(attr
);
1607 /* Extract MAC mobility sequence number, if any. */
1608 attr_new
->mm_seqnum
=
1609 bgp_attr_mac_mobility_seqnum(attr_new
, &sticky
);
1610 attr_new
->sticky
= sticky
;
1612 /* Create new route with its attribute. */
1613 tmp_ri
= info_make(ZEBRA_ROUTE_BGP
, BGP_ROUTE_STATIC
, 0,
1614 bgp
->peer_self
, attr_new
, rn
);
1615 SET_FLAG(tmp_ri
->flags
, BGP_INFO_VALID
);
1616 bgp_info_extra_get(tmp_ri
);
1618 /* The VNI goes into the 'label' field of the route */
1619 vni2label(vpn
->vni
, &label
[0]);
1621 /* Type-2 routes may carry a second VNI - the L3-VNI.
1622 * Only attach second label if we are advertising two labels for
1625 if (evp
->prefix
.route_type
== BGP_EVPN_MAC_IP_ROUTE
1626 && CHECK_FLAG(vpn
->flags
, VNI_FLAG_USE_TWO_LABELS
)) {
1629 l3vni
= bgpevpn_get_l3vni(vpn
);
1631 vni2label(l3vni
, &label
[1]);
1636 memcpy(&tmp_ri
->extra
->label
, label
, sizeof(label
));
1637 tmp_ri
->extra
->num_labels
= num_labels
;
1638 bgp_info_add(rn
, tmp_ri
);
1641 if (attrhash_cmp(tmp_ri
->attr
, attr
)
1642 && !CHECK_FLAG(tmp_ri
->flags
, BGP_INFO_REMOVED
))
1646 * The attributes have changed, type-2 routes needs to
1647 * be advertised with right labels.
1649 vni2label(vpn
->vni
, &label
[0]);
1650 if (evp
->prefix
.route_type
== BGP_EVPN_MAC_IP_ROUTE
1651 && CHECK_FLAG(vpn
->flags
,
1652 VNI_FLAG_USE_TWO_LABELS
)) {
1655 l3vni
= bgpevpn_get_l3vni(vpn
);
1657 vni2label(l3vni
, &label
[1]);
1661 memcpy(&tmp_ri
->extra
->label
, label
, sizeof(label
));
1662 tmp_ri
->extra
->num_labels
= num_labels
;
1664 /* The attribute has changed. */
1665 /* Add (or update) attribute to hash. */
1666 attr_new
= bgp_attr_intern(attr
);
1667 bgp_info_set_flag(rn
, tmp_ri
, BGP_INFO_ATTR_CHANGED
);
1669 /* Extract MAC mobility sequence number, if any. */
1670 attr_new
->mm_seqnum
=
1671 bgp_attr_mac_mobility_seqnum(attr_new
, &sticky
);
1672 attr_new
->sticky
= sticky
;
1674 /* Restore route, if needed. */
1675 if (CHECK_FLAG(tmp_ri
->flags
, BGP_INFO_REMOVED
))
1676 bgp_info_restore(rn
, tmp_ri
);
1678 /* Unintern existing, set to new. */
1679 bgp_attr_unintern(&tmp_ri
->attr
);
1680 tmp_ri
->attr
= attr_new
;
1681 tmp_ri
->uptime
= bgp_clock();
1685 /* Return back the route entry. */
1687 return route_change
;
1691 * Create or update EVPN route (of type based on prefix) for specified VNI
1692 * and schedule for processing.
1694 static int update_evpn_route(struct bgp
*bgp
, struct bgpevpn
*vpn
,
1695 struct prefix_evpn
*p
, uint8_t flags
,
1698 struct bgp_node
*rn
;
1700 struct attr
*attr_new
;
1701 int add_l3_ecomm
= 0;
1702 struct bgp_info
*ri
;
1703 afi_t afi
= AFI_L2VPN
;
1704 safi_t safi
= SAFI_EVPN
;
1707 memset(&attr
, 0, sizeof(struct attr
));
1709 /* Build path-attribute for this route. */
1710 bgp_attr_default_set(&attr
, BGP_ORIGIN_IGP
);
1711 attr
.nexthop
= vpn
->originator_ip
;
1712 attr
.mp_nexthop_global_in
= vpn
->originator_ip
;
1713 attr
.mp_nexthop_len
= BGP_ATTR_NHLEN_IPV4
;
1714 attr
.sticky
= CHECK_FLAG(flags
, ZEBRA_MACIP_TYPE_STICKY
) ? 1 : 0;
1715 attr
.default_gw
= CHECK_FLAG(flags
, ZEBRA_MACIP_TYPE_GW
) ? 1 : 0;
1716 attr
.router_flag
= CHECK_FLAG(flags
,
1717 ZEBRA_MACIP_TYPE_ROUTER_FLAG
) ? 1 : 0;
1719 /* PMSI is only needed for type-3 routes */
1720 if (p
->prefix
.route_type
== BGP_EVPN_IMET_ROUTE
)
1721 attr
.flag
|= ATTR_FLAG_BIT(BGP_ATTR_PMSI_TUNNEL
);
1723 /* router mac is only needed for type-2 routes here. */
1724 if (p
->prefix
.route_type
== BGP_EVPN_MAC_IP_ROUTE
)
1725 bgpevpn_get_rmac(vpn
, &attr
.rmac
);
1726 vni2label(vpn
->vni
, &(attr
.label
));
1728 /* Include L3 VNI related RTs and RMAC for type-2 routes, if they're
1729 * IPv4 or IPv6 global addresses and we're advertising L3VNI with
1732 if (p
->prefix
.route_type
== BGP_EVPN_MAC_IP_ROUTE
&&
1733 (is_evpn_prefix_ipaddr_v4(p
) ||
1734 !IN6_IS_ADDR_LINKLOCAL(&p
->prefix
.macip_addr
.ip
.ipaddr_v6
)) &&
1735 CHECK_FLAG(vpn
->flags
, VNI_FLAG_USE_TWO_LABELS
) &&
1736 bgpevpn_get_l3vni(vpn
))
1739 /* Set up extended community. */
1740 build_evpn_route_extcomm(vpn
, &attr
, add_l3_ecomm
);
1742 /* First, create (or fetch) route node within the VNI. */
1743 /* NOTE: There is no RD here. */
1744 rn
= bgp_node_get(vpn
->route_table
, (struct prefix
*)p
);
1746 /* Create or update route entry. */
1747 route_change
= update_evpn_route_entry(bgp
, vpn
, afi
, safi
, rn
, &attr
,
1748 1, &ri
, flags
, seq
);
1750 attr_new
= ri
->attr
;
1752 /* Perform route selection; this is just to set the flags correctly
1753 * as local route in the VNI always wins.
1755 evpn_route_select_install(bgp
, vpn
, rn
);
1756 bgp_unlock_node(rn
);
1758 /* If this is a new route or some attribute has changed, export the
1759 * route to the global table. The route will be advertised to peers
1760 * from there. Note that this table is a 2-level tree (RD-level +
1761 * Prefix-level) similar to L3VPN routes.
1764 struct bgp_info
*global_ri
;
1766 rn
= bgp_afi_node_get(bgp
->rib
[afi
][safi
], afi
, safi
,
1767 (struct prefix
*)p
, &vpn
->prd
);
1768 update_evpn_route_entry(bgp
, vpn
, afi
, safi
, rn
, attr_new
, 1,
1769 &global_ri
, flags
, seq
);
1771 /* Schedule for processing and unlock node. */
1772 bgp_process(bgp
, rn
, afi
, safi
);
1773 bgp_unlock_node(rn
);
1776 /* Unintern temporary. */
1777 aspath_unintern(&attr
.aspath
);
1783 * Delete EVPN route entry.
1784 * The entry can be in ESI/VNI table or the global table.
1786 static void delete_evpn_route_entry(struct bgp
*bgp
,
1787 afi_t afi
, safi_t safi
,
1788 struct bgp_node
*rn
,
1789 struct bgp_info
**ri
)
1791 struct bgp_info
*tmp_ri
;
1795 /* Now, find matching route. */
1796 for (tmp_ri
= rn
->info
; tmp_ri
; tmp_ri
= tmp_ri
->next
)
1797 if (tmp_ri
->peer
== bgp
->peer_self
1798 && tmp_ri
->type
== ZEBRA_ROUTE_BGP
1799 && tmp_ri
->sub_type
== BGP_ROUTE_STATIC
)
1804 /* Mark route for delete. */
1806 bgp_info_delete(rn
, tmp_ri
);
1811 /* Delete EVPN ES (type-4) route */
1812 static int delete_evpn_type4_route(struct bgp
*bgp
,
1814 struct prefix_evpn
*p
)
1816 afi_t afi
= AFI_L2VPN
;
1817 safi_t safi
= SAFI_EVPN
;
1818 struct bgp_info
*ri
;
1819 struct bgp_node
*rn
= NULL
; /* rn in esi table */
1820 struct bgp_node
*global_rn
= NULL
; /* rn in global table */
1822 /* First, locate the route node within the ESI.
1823 * If it doesn't exist, ther is nothing to do.
1824 * Note: there is no RD here.
1826 rn
= bgp_node_lookup(es
->route_table
, (struct prefix
*)p
);
1830 /* Next, locate route node in the global EVPN routing table.
1831 * Note that this table is a 2-level tree (RD-level + Prefix-level)
1833 global_rn
= bgp_afi_node_lookup(bgp
->rib
[afi
][safi
], afi
, safi
,
1834 (struct prefix
*)p
, &es
->prd
);
1837 /* Delete route entry in the global EVPN table. */
1838 delete_evpn_route_entry(bgp
, afi
, safi
,
1841 /* Schedule for processing - withdraws to peers happen from
1845 bgp_process(bgp
, global_rn
, afi
, safi
);
1846 bgp_unlock_node(global_rn
);
1850 * Delete route entry in the ESI route table.
1851 * This can just be removed.
1853 delete_evpn_route_entry(bgp
, afi
, safi
, rn
, &ri
);
1855 bgp_info_reap(rn
, ri
);
1856 bgp_unlock_node(rn
);
1860 /* Delete EVPN type5 route */
1861 static int delete_evpn_type5_route(struct bgp
*bgp_vrf
, struct prefix_evpn
*evp
)
1863 afi_t afi
= AFI_L2VPN
;
1864 safi_t safi
= SAFI_EVPN
;
1865 struct bgp_node
*rn
= NULL
;
1866 struct bgp_info
*ri
= NULL
;
1867 struct bgp
*bgp_def
= NULL
; /* default bgp instance */
1869 bgp_def
= bgp_get_default();
1873 /* locate the global route entry for this type-5 prefix */
1874 rn
= bgp_afi_node_lookup(bgp_def
->rib
[afi
][safi
], afi
, safi
,
1875 (struct prefix
*)evp
, &bgp_vrf
->vrf_prd
);
1879 delete_evpn_route_entry(bgp_def
, afi
, safi
, rn
, &ri
);
1881 bgp_process(bgp_def
, rn
, afi
, safi
);
1882 bgp_unlock_node(rn
);
1887 * Delete EVPN route (of type based on prefix) for specified VNI and
1888 * schedule for processing.
1890 static int delete_evpn_route(struct bgp
*bgp
, struct bgpevpn
*vpn
,
1891 struct prefix_evpn
*p
)
1893 struct bgp_node
*rn
, *global_rn
;
1894 struct bgp_info
*ri
;
1895 afi_t afi
= AFI_L2VPN
;
1896 safi_t safi
= SAFI_EVPN
;
1898 /* First, locate the route node within the VNI. If it doesn't exist,
1900 * is nothing further to do.
1902 /* NOTE: There is no RD here. */
1903 rn
= bgp_node_lookup(vpn
->route_table
, (struct prefix
*)p
);
1907 /* Next, locate route node in the global EVPN routing table. Note that
1908 * this table is a 2-level tree (RD-level + Prefix-level) similar to
1911 global_rn
= bgp_afi_node_lookup(bgp
->rib
[afi
][safi
], afi
, safi
,
1912 (struct prefix
*)p
, &vpn
->prd
);
1914 /* Delete route entry in the global EVPN table. */
1915 delete_evpn_route_entry(bgp
, afi
, safi
, global_rn
, &ri
);
1917 /* Schedule for processing - withdraws to peers happen from
1921 bgp_process(bgp
, global_rn
, afi
, safi
);
1922 bgp_unlock_node(global_rn
);
1925 /* Delete route entry in the VNI route table. This can just be removed.
1927 delete_evpn_route_entry(bgp
, afi
, safi
, rn
, &ri
);
1929 bgp_info_reap(rn
, ri
);
1930 bgp_unlock_node(rn
);
1936 * Update all type-2 (MACIP) local routes for this VNI - these should also
1937 * be scheduled for advertise to peers.
1939 static int update_all_type2_routes(struct bgp
*bgp
, struct bgpevpn
*vpn
)
1943 struct bgp_node
*rn
;
1944 struct bgp_info
*ri
, *tmp_ri
;
1946 struct attr
*attr_new
;
1948 int add_l3_ecomm
= 0;
1953 /* Walk this VNI's route table and update local type-2 routes. For any
1954 * routes updated, update corresponding entry in the global table too.
1956 for (rn
= bgp_table_top(vpn
->route_table
); rn
;
1957 rn
= bgp_route_next(rn
)) {
1958 struct prefix_evpn
*evp
= (struct prefix_evpn
*)&rn
->p
;
1959 struct bgp_node
*rd_rn
;
1960 struct bgp_info
*global_ri
;
1962 if (evp
->prefix
.route_type
!= BGP_EVPN_MAC_IP_ROUTE
)
1965 /* Identify local route. */
1966 for (tmp_ri
= rn
->info
; tmp_ri
; tmp_ri
= tmp_ri
->next
) {
1967 if (tmp_ri
->peer
== bgp
->peer_self
1968 && tmp_ri
->type
== ZEBRA_ROUTE_BGP
1969 && tmp_ri
->sub_type
== BGP_ROUTE_STATIC
)
1977 * Build attribute per local route as the MAC mobility and
1978 * some other values could differ for different routes. The
1979 * attributes will be shared in the hash table.
1981 bgp_attr_default_set(&attr
, BGP_ORIGIN_IGP
);
1982 attr
.nexthop
= vpn
->originator_ip
;
1983 attr
.mp_nexthop_global_in
= vpn
->originator_ip
;
1984 attr
.mp_nexthop_len
= BGP_ATTR_NHLEN_IPV4
;
1985 bgpevpn_get_rmac(vpn
, &attr
.rmac
);
1987 if (evpn_route_is_sticky(bgp
, rn
))
1989 else if (evpn_route_is_def_gw(bgp
, rn
)) {
1990 attr
.default_gw
= 1;
1991 if (is_evpn_prefix_ipaddr_v6(evp
))
1992 attr
.router_flag
= 1;
1995 /* Add L3 VNI RTs and RMAC for non IPv6 link-local if
1996 * using L3 VNI for type-2 routes also.
1998 if ((is_evpn_prefix_ipaddr_v4(evp
) ||
1999 !IN6_IS_ADDR_LINKLOCAL(&evp
->prefix
.macip_addr
.ip
.ipaddr_v6
)) &&
2000 CHECK_FLAG(vpn
->flags
, VNI_FLAG_USE_TWO_LABELS
) &&
2001 bgpevpn_get_l3vni(vpn
))
2004 /* Set up extended community. */
2005 build_evpn_route_extcomm(vpn
, &attr
, add_l3_ecomm
);
2007 seq
= mac_mobility_seqnum(tmp_ri
->attr
);
2009 /* Update the route entry. */
2010 update_evpn_route_entry(bgp
, vpn
, afi
, safi
, rn
,
2011 &attr
, 0, &ri
, 0, seq
);
2013 /* Perform route selection; this is just to set the flags
2014 * correctly as local route in the VNI always wins.
2016 evpn_route_select_install(bgp
, vpn
, rn
);
2018 attr_new
= ri
->attr
;
2020 /* Update route in global routing table. */
2021 rd_rn
= bgp_afi_node_get(bgp
->rib
[afi
][safi
], afi
, safi
,
2022 (struct prefix
*)evp
, &vpn
->prd
);
2024 update_evpn_route_entry(bgp
, vpn
, afi
, safi
, rd_rn
, attr_new
, 0,
2026 mac_mobility_seqnum(attr_new
));
2028 /* Schedule for processing and unlock node. */
2029 bgp_process(bgp
, rd_rn
, afi
, safi
);
2030 bgp_unlock_node(rd_rn
);
2032 /* Unintern temporary. */
2033 aspath_unintern(&attr
.aspath
);
2041 * Delete all type-2 (MACIP) local routes for this VNI - only from the
2042 * global routing table. These are also scheduled for withdraw from peers.
2044 static int delete_global_type2_routes(struct bgp
*bgp
, struct bgpevpn
*vpn
)
2048 struct bgp_node
*rdrn
, *rn
;
2049 struct bgp_table
*table
;
2050 struct bgp_info
*ri
;
2055 rdrn
= bgp_node_lookup(bgp
->rib
[afi
][safi
], (struct prefix
*)&vpn
->prd
);
2056 if (rdrn
&& rdrn
->info
) {
2057 table
= (struct bgp_table
*)rdrn
->info
;
2058 for (rn
= bgp_table_top(table
); rn
; rn
= bgp_route_next(rn
)) {
2059 struct prefix_evpn
*evp
= (struct prefix_evpn
*)&rn
->p
;
2061 if (evp
->prefix
.route_type
!= BGP_EVPN_MAC_IP_ROUTE
)
2064 delete_evpn_route_entry(bgp
, afi
, safi
, rn
, &ri
);
2066 bgp_process(bgp
, rn
, afi
, safi
);
2070 /* Unlock RD node. */
2072 bgp_unlock_node(rdrn
);
2078 * Delete all type-2 (MACIP) local routes for this VNI - from the global
2079 * table as well as the per-VNI route table.
2081 static int delete_all_type2_routes(struct bgp
*bgp
, struct bgpevpn
*vpn
)
2085 struct bgp_node
*rn
;
2086 struct bgp_info
*ri
;
2091 /* First, walk the global route table for this VNI's type-2 local
2093 * EVPN routes are a 2-level table, first get the RD table.
2095 delete_global_type2_routes(bgp
, vpn
);
2097 /* Next, walk this VNI's route table and delete local type-2 routes. */
2098 for (rn
= bgp_table_top(vpn
->route_table
); rn
;
2099 rn
= bgp_route_next(rn
)) {
2100 struct prefix_evpn
*evp
= (struct prefix_evpn
*)&rn
->p
;
2102 if (evp
->prefix
.route_type
!= BGP_EVPN_MAC_IP_ROUTE
)
2105 delete_evpn_route_entry(bgp
, afi
, safi
, rn
, &ri
);
2107 /* Route entry in local table gets deleted immediately. */
2109 bgp_info_reap(rn
, ri
);
2116 * Delete all routes in per ES route-table
2118 static int delete_all_es_routes(struct bgp
*bgp
, struct evpnes
*es
)
2120 struct bgp_node
*rn
;
2121 struct bgp_info
*ri
, *nextri
;
2123 /* Walk this ES's route table and delete all routes. */
2124 for (rn
= bgp_table_top(es
->route_table
); rn
;
2125 rn
= bgp_route_next(rn
)) {
2126 for (ri
= rn
->info
; (ri
!= NULL
) && (nextri
= ri
->next
, 1);
2128 bgp_info_delete(rn
, ri
);
2129 bgp_info_reap(rn
, ri
);
2137 * Delete all routes in the per-VNI route table.
2139 static int delete_all_vni_routes(struct bgp
*bgp
, struct bgpevpn
*vpn
)
2141 struct bgp_node
*rn
;
2142 struct bgp_info
*ri
, *nextri
;
2144 /* Walk this VNI's route table and delete all routes. */
2145 for (rn
= bgp_table_top(vpn
->route_table
); rn
;
2146 rn
= bgp_route_next(rn
)) {
2147 for (ri
= rn
->info
; (ri
!= NULL
) && (nextri
= ri
->next
, 1);
2149 bgp_info_delete(rn
, ri
);
2150 bgp_info_reap(rn
, ri
);
2158 * Update (and advertise) local routes for a VNI. Invoked upon the VNI
2159 * export RT getting modified or change to tunnel IP. Note that these
2160 * situations need the route in the per-VNI table as well as the global
2161 * table to be updated (as attributes change).
2163 static int update_routes_for_vni(struct bgp
*bgp
, struct bgpevpn
*vpn
)
2166 struct prefix_evpn p
;
2168 /* Update and advertise the type-3 route (only one) followed by the
2169 * locally learnt type-2 routes (MACIP) - for this VNI.
2171 build_evpn_type3_prefix(&p
, vpn
->originator_ip
);
2172 ret
= update_evpn_route(bgp
, vpn
, &p
, 0, 0);
2176 return update_all_type2_routes(bgp
, vpn
);
2179 /* Delete (and withdraw) local routes for specified ES from global and ES table.
2180 * Also remove all other routes from the per ES table.
2181 * Invoked when ES is deleted.
2183 static int delete_routes_for_es(struct bgp
*bgp
, struct evpnes
*es
)
2186 char buf
[ESI_STR_LEN
];
2187 struct prefix_evpn p
;
2189 /* Delete and withdraw locally learnt ES route */
2190 build_evpn_type4_prefix(&p
, &es
->esi
, es
->originator_ip
.ipaddr_v4
);
2191 ret
= delete_evpn_type4_route(bgp
, es
, &p
);
2193 flog_err(BGP_ERR_EVPN_ROUTE_DELETE
,
2194 "%u failed to delete type-4 route for ESI %s",
2195 bgp
->vrf_id
, esi_to_str(&es
->esi
, buf
, sizeof(buf
)));
2198 /* Delete all routes from per ES table */
2199 return delete_all_es_routes(bgp
, es
);
2203 * Delete (and withdraw) local routes for specified VNI from the global
2204 * table and per-VNI table. After this, remove all other routes from
2205 * the per-VNI table. Invoked upon the VNI being deleted or EVPN
2206 * (advertise-all-vni) being disabled.
2208 static int delete_routes_for_vni(struct bgp
*bgp
, struct bgpevpn
*vpn
)
2211 struct prefix_evpn p
;
2213 /* Delete and withdraw locally learnt type-2 routes (MACIP)
2214 * followed by type-3 routes (only one) - for this VNI.
2216 ret
= delete_all_type2_routes(bgp
, vpn
);
2220 build_evpn_type3_prefix(&p
, vpn
->originator_ip
);
2221 ret
= delete_evpn_route(bgp
, vpn
, &p
);
2225 /* Delete all routes from the per-VNI table. */
2226 return delete_all_vni_routes(bgp
, vpn
);
2230 * There is a tunnel endpoint IP address change for this VNI, delete
2231 * prior type-3 route (if needed) and update.
2232 * Note: Route re-advertisement happens elsewhere after other processing
2235 static int handle_tunnel_ip_change(struct bgp
*bgp
, struct bgpevpn
*vpn
,
2236 struct in_addr originator_ip
)
2238 struct prefix_evpn p
;
2240 /* If VNI is not live, we only need to update the originator ip */
2241 if (!is_vni_live(vpn
)) {
2242 vpn
->originator_ip
= originator_ip
;
2246 /* Update the tunnel-ip hash */
2247 bgp_tip_del(bgp
, &vpn
->originator_ip
);
2248 bgp_tip_add(bgp
, &originator_ip
);
2250 /* filter routes as martian nexthop db has changed */
2251 bgp_filter_evpn_routes_upon_martian_nh_change(bgp
);
2253 /* Need to withdraw type-3 route as the originator IP is part
2256 build_evpn_type3_prefix(&p
, vpn
->originator_ip
);
2257 delete_evpn_route(bgp
, vpn
, &p
);
2259 /* Update the tunnel IP and re-advertise all routes for this VNI. */
2260 vpn
->originator_ip
= originator_ip
;
2264 /* Install EVPN route entry in ES */
2265 static int install_evpn_route_entry_in_es(struct bgp
*bgp
,
2267 struct prefix_evpn
*p
,
2268 struct bgp_info
*parent_ri
)
2271 struct bgp_node
*rn
= NULL
;
2272 struct bgp_info
*ri
= NULL
;
2273 struct attr
*attr_new
= NULL
;
2275 /* Create (or fetch) route within the VNI.
2276 * NOTE: There is no RD here.
2278 rn
= bgp_node_get(es
->route_table
, (struct prefix
*)p
);
2280 /* Check if route entry is already present. */
2281 for (ri
= rn
->info
; ri
; ri
= ri
->next
)
2283 (struct bgp_info
*)ri
->extra
->parent
== parent_ri
)
2287 /* Add (or update) attribute to hash. */
2288 attr_new
= bgp_attr_intern(parent_ri
->attr
);
2290 /* Create new route with its attribute. */
2291 ri
= info_make(parent_ri
->type
, BGP_ROUTE_IMPORTED
, 0,
2292 parent_ri
->peer
, attr_new
, rn
);
2293 SET_FLAG(ri
->flags
, BGP_INFO_VALID
);
2294 bgp_info_extra_get(ri
);
2295 ri
->extra
->parent
= parent_ri
;
2296 bgp_info_add(rn
, ri
);
2298 if (attrhash_cmp(ri
->attr
, parent_ri
->attr
)
2299 && !CHECK_FLAG(ri
->flags
, BGP_INFO_REMOVED
)) {
2300 bgp_unlock_node(rn
);
2303 /* The attribute has changed. */
2304 /* Add (or update) attribute to hash. */
2305 attr_new
= bgp_attr_intern(parent_ri
->attr
);
2307 /* Restore route, if needed. */
2308 if (CHECK_FLAG(ri
->flags
, BGP_INFO_REMOVED
))
2309 bgp_info_restore(rn
, ri
);
2311 /* Mark if nexthop has changed. */
2312 if (!IPV4_ADDR_SAME(&ri
->attr
->nexthop
, &attr_new
->nexthop
))
2313 SET_FLAG(ri
->flags
, BGP_INFO_IGP_CHANGED
);
2315 /* Unintern existing, set to new. */
2316 bgp_attr_unintern(&ri
->attr
);
2317 ri
->attr
= attr_new
;
2318 ri
->uptime
= bgp_clock();
2321 /* Perform route selection and update zebra, if required. */
2322 ret
= evpn_es_route_select_install(bgp
, es
, rn
);
2327 * Install route entry into the VRF routing table and invoke route selection.
2329 static int install_evpn_route_entry_in_vrf(struct bgp
*bgp_vrf
,
2330 struct prefix_evpn
*evp
,
2331 struct bgp_info
*parent_ri
)
2333 struct bgp_node
*rn
;
2334 struct bgp_info
*ri
;
2336 struct attr
*attr_new
;
2339 struct prefix
*pp
= &p
;
2342 char buf
[PREFIX_STRLEN
];
2343 char buf1
[PREFIX_STRLEN
];
2345 memset(pp
, 0, sizeof(struct prefix
));
2346 ip_prefix_from_evpn_prefix(evp
, pp
);
2348 if (bgp_debug_zebra(NULL
)) {
2350 "installing evpn prefix %s as ip prefix %s in vrf %s",
2351 prefix2str(evp
, buf
, sizeof(buf
)),
2352 prefix2str(pp
, buf1
, sizeof(buf
)),
2353 vrf_id_to_name(bgp_vrf
->vrf_id
));
2356 /* Create (or fetch) route within the VRF. */
2357 /* NOTE: There is no RD here. */
2358 if (is_evpn_prefix_ipaddr_v4(evp
)) {
2360 safi
= SAFI_UNICAST
;
2361 rn
= bgp_node_get(bgp_vrf
->rib
[afi
][safi
], pp
);
2362 } else if (is_evpn_prefix_ipaddr_v6(evp
)) {
2364 safi
= SAFI_UNICAST
;
2365 rn
= bgp_node_get(bgp_vrf
->rib
[afi
][safi
], pp
);
2369 /* EVPN routes currently only support a IPv4 next hop which corresponds
2370 * to the remote VTEP. When importing into a VRF, if it is IPv6 host
2371 * or prefix route, we have to convert the next hop to an IPv4-mapped
2372 * address for the rest of the code to flow through. In the case of IPv4,
2373 * make sure to set the flag for next hop attribute.
2375 bgp_attr_dup(&attr
, parent_ri
->attr
);
2377 evpn_convert_nexthop_to_ipv6(&attr
);
2379 attr
.flag
|= ATTR_FLAG_BIT(BGP_ATTR_NEXT_HOP
);
2381 /* Check if route entry is already present. */
2382 for (ri
= rn
->info
; ri
; ri
= ri
->next
)
2384 && (struct bgp_info
*)ri
->extra
->parent
== parent_ri
)
2388 /* Add (or update) attribute to hash. */
2389 attr_new
= bgp_attr_intern(&attr
);
2391 /* Create new route with its attribute. */
2392 ri
= info_make(parent_ri
->type
, BGP_ROUTE_IMPORTED
, 0,
2393 parent_ri
->peer
, attr_new
, rn
);
2394 SET_FLAG(ri
->flags
, BGP_INFO_VALID
);
2395 bgp_info_extra_get(ri
);
2396 ri
->extra
->parent
= bgp_info_lock(parent_ri
);
2397 bgp_lock_node((struct bgp_node
*)parent_ri
->net
);
2398 if (parent_ri
->extra
) {
2399 memcpy(&ri
->extra
->label
, &parent_ri
->extra
->label
,
2400 sizeof(ri
->extra
->label
));
2401 ri
->extra
->num_labels
= parent_ri
->extra
->num_labels
;
2403 bgp_info_add(rn
, ri
);
2405 if (attrhash_cmp(ri
->attr
, &attr
)
2406 && !CHECK_FLAG(ri
->flags
, BGP_INFO_REMOVED
)) {
2407 bgp_unlock_node(rn
);
2410 /* The attribute has changed. */
2411 /* Add (or update) attribute to hash. */
2412 attr_new
= bgp_attr_intern(&attr
);
2414 /* Restore route, if needed. */
2415 if (CHECK_FLAG(ri
->flags
, BGP_INFO_REMOVED
))
2416 bgp_info_restore(rn
, ri
);
2418 /* Mark if nexthop has changed. */
2419 if ((afi
== AFI_IP
&&
2420 !IPV4_ADDR_SAME(&ri
->attr
->nexthop
, &attr_new
->nexthop
)) ||
2422 !IPV6_ADDR_SAME(&ri
->attr
->mp_nexthop_global
,
2423 &attr_new
->mp_nexthop_global
)))
2424 SET_FLAG(ri
->flags
, BGP_INFO_IGP_CHANGED
);
2426 /* Unintern existing, set to new. */
2427 bgp_attr_unintern(&ri
->attr
);
2428 ri
->attr
= attr_new
;
2429 ri
->uptime
= bgp_clock();
2432 /* Perform route selection and update zebra, if required. */
2433 bgp_process(bgp_vrf
, rn
, afi
, safi
);
2439 * Install route entry into the VNI routing table and invoke route selection.
2441 static int install_evpn_route_entry(struct bgp
*bgp
, struct bgpevpn
*vpn
,
2442 struct prefix_evpn
*p
,
2443 struct bgp_info
*parent_ri
)
2445 struct bgp_node
*rn
;
2446 struct bgp_info
*ri
;
2447 struct attr
*attr_new
;
2450 /* Create (or fetch) route within the VNI. */
2451 /* NOTE: There is no RD here. */
2452 rn
= bgp_node_get(vpn
->route_table
, (struct prefix
*)p
);
2454 /* Check if route entry is already present. */
2455 for (ri
= rn
->info
; ri
; ri
= ri
->next
)
2457 && (struct bgp_info
*)ri
->extra
->parent
== parent_ri
)
2461 /* Add (or update) attribute to hash. */
2462 attr_new
= bgp_attr_intern(parent_ri
->attr
);
2464 /* Create new route with its attribute. */
2465 ri
= info_make(parent_ri
->type
, BGP_ROUTE_IMPORTED
, 0,
2466 parent_ri
->peer
, attr_new
, rn
);
2467 SET_FLAG(ri
->flags
, BGP_INFO_VALID
);
2468 bgp_info_extra_get(ri
);
2469 ri
->extra
->parent
= bgp_info_lock(parent_ri
);
2470 bgp_lock_node((struct bgp_node
*)parent_ri
->net
);
2471 if (parent_ri
->extra
) {
2472 memcpy(&ri
->extra
->label
, &parent_ri
->extra
->label
,
2473 sizeof(ri
->extra
->label
));
2474 ri
->extra
->num_labels
= parent_ri
->extra
->num_labels
;
2476 bgp_info_add(rn
, ri
);
2478 if (attrhash_cmp(ri
->attr
, parent_ri
->attr
)
2479 && !CHECK_FLAG(ri
->flags
, BGP_INFO_REMOVED
)) {
2480 bgp_unlock_node(rn
);
2483 /* The attribute has changed. */
2484 /* Add (or update) attribute to hash. */
2485 attr_new
= bgp_attr_intern(parent_ri
->attr
);
2487 /* Restore route, if needed. */
2488 if (CHECK_FLAG(ri
->flags
, BGP_INFO_REMOVED
))
2489 bgp_info_restore(rn
, ri
);
2491 /* Mark if nexthop has changed. */
2492 if (!IPV4_ADDR_SAME(&ri
->attr
->nexthop
, &attr_new
->nexthop
))
2493 SET_FLAG(ri
->flags
, BGP_INFO_IGP_CHANGED
);
2495 /* Unintern existing, set to new. */
2496 bgp_attr_unintern(&ri
->attr
);
2497 ri
->attr
= attr_new
;
2498 ri
->uptime
= bgp_clock();
2501 /* Perform route selection and update zebra, if required. */
2502 ret
= evpn_route_select_install(bgp
, vpn
, rn
);
2507 /* Uninstall EVPN route entry from ES route table */
2508 static int uninstall_evpn_route_entry_in_es(struct bgp
*bgp
,
2510 struct prefix_evpn
*p
,
2511 struct bgp_info
*parent_ri
)
2514 struct bgp_node
*rn
;
2515 struct bgp_info
*ri
;
2517 if (!es
->route_table
)
2520 /* Locate route within the ESI.
2521 * NOTE: There is no RD here.
2523 rn
= bgp_node_lookup(es
->route_table
, (struct prefix
*)p
);
2527 /* Find matching route entry. */
2528 for (ri
= rn
->info
; ri
; ri
= ri
->next
)
2530 (struct bgp_info
*)ri
->extra
->parent
== parent_ri
)
2536 /* Mark entry for deletion */
2537 bgp_info_delete(rn
, ri
);
2539 /* Perform route selection and update zebra, if required. */
2540 ret
= evpn_es_route_select_install(bgp
, es
, rn
);
2542 /* Unlock route node. */
2543 bgp_unlock_node(rn
);
2549 * Uninstall route entry from the VRF routing table and send message
2550 * to zebra, if appropriate.
2552 static int uninstall_evpn_route_entry_in_vrf(struct bgp
*bgp_vrf
,
2553 struct prefix_evpn
*evp
,
2554 struct bgp_info
*parent_ri
)
2556 struct bgp_node
*rn
;
2557 struct bgp_info
*ri
;
2560 struct prefix
*pp
= &p
;
2563 char buf
[PREFIX_STRLEN
];
2564 char buf1
[PREFIX_STRLEN
];
2566 memset(pp
, 0, sizeof(struct prefix
));
2567 ip_prefix_from_evpn_prefix(evp
, pp
);
2569 if (bgp_debug_zebra(NULL
)) {
2571 "uninstalling evpn prefix %s as ip prefix %s in vrf %s",
2572 prefix2str(evp
, buf
, sizeof(buf
)),
2573 prefix2str(pp
, buf1
, sizeof(buf
)),
2574 vrf_id_to_name(bgp_vrf
->vrf_id
));
2577 /* Locate route within the VRF. */
2578 /* NOTE: There is no RD here. */
2579 if (is_evpn_prefix_ipaddr_v4(evp
)) {
2581 safi
= SAFI_UNICAST
;
2582 rn
= bgp_node_lookup(bgp_vrf
->rib
[afi
][safi
], pp
);
2585 safi
= SAFI_UNICAST
;
2586 rn
= bgp_node_lookup(bgp_vrf
->rib
[afi
][safi
], pp
);
2592 /* Find matching route entry. */
2593 for (ri
= rn
->info
; ri
; ri
= ri
->next
)
2595 && (struct bgp_info
*)ri
->extra
->parent
== parent_ri
)
2601 /* Mark entry for deletion */
2602 bgp_info_delete(rn
, ri
);
2604 /* Perform route selection and update zebra, if required. */
2605 bgp_process(bgp_vrf
, rn
, afi
, safi
);
2607 /* Unlock route node. */
2608 bgp_unlock_node(rn
);
2614 * Uninstall route entry from the VNI routing table and send message
2615 * to zebra, if appropriate.
2617 static int uninstall_evpn_route_entry(struct bgp
*bgp
, struct bgpevpn
*vpn
,
2618 struct prefix_evpn
*p
,
2619 struct bgp_info
*parent_ri
)
2621 struct bgp_node
*rn
;
2622 struct bgp_info
*ri
;
2625 /* Locate route within the VNI. */
2626 /* NOTE: There is no RD here. */
2627 rn
= bgp_node_lookup(vpn
->route_table
, (struct prefix
*)p
);
2631 /* Find matching route entry. */
2632 for (ri
= rn
->info
; ri
; ri
= ri
->next
)
2634 && (struct bgp_info
*)ri
->extra
->parent
== parent_ri
)
2640 /* Mark entry for deletion */
2641 bgp_info_delete(rn
, ri
);
2643 /* Perform route selection and update zebra, if required. */
2644 ret
= evpn_route_select_install(bgp
, vpn
, rn
);
2646 /* Unlock route node. */
2647 bgp_unlock_node(rn
);
2653 * Given a prefix, see if it belongs to ES.
2655 static int is_prefix_matching_for_es(struct prefix_evpn
*p
,
2658 /* if not an ES route return false */
2659 if (p
->prefix
.route_type
!= BGP_EVPN_ES_ROUTE
)
2662 if (memcmp(&p
->prefix
.es_addr
.esi
, &es
->esi
, sizeof(esi_t
)) == 0)
2669 * Given a route entry and a VRF, see if this route entry should be
2670 * imported into the VRF i.e., RTs match.
2672 static int is_route_matching_for_vrf(struct bgp
*bgp_vrf
, struct bgp_info
*ri
)
2674 struct attr
*attr
= ri
->attr
;
2675 struct ecommunity
*ecom
;
2679 /* Route should have valid RT to be even considered. */
2680 if (!(attr
->flag
& ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES
)))
2683 ecom
= attr
->ecommunity
;
2684 if (!ecom
|| !ecom
->size
)
2687 /* For each extended community RT, see if it matches this VNI. If any RT
2688 * matches, we're done.
2690 for (i
= 0; i
< ecom
->size
; i
++) {
2692 uint8_t type
, sub_type
;
2693 struct ecommunity_val
*eval
;
2694 struct ecommunity_val eval_tmp
;
2695 struct vrf_irt_node
*irt
;
2697 /* Only deal with RTs */
2698 pnt
= (ecom
->val
+ (i
* ECOMMUNITY_SIZE
));
2699 eval
= (struct ecommunity_val
*)(ecom
->val
2700 + (i
* ECOMMUNITY_SIZE
));
2703 if (sub_type
!= ECOMMUNITY_ROUTE_TARGET
)
2706 /* See if this RT matches specified VNIs import RTs */
2707 irt
= lookup_vrf_import_rt(eval
);
2709 if (is_vrf_present_in_irt_vrfs(irt
->vrfs
, bgp_vrf
))
2712 /* Also check for non-exact match. In this, we mask out the AS
2714 * only check on the local-admin sub-field. This is to
2716 * VNI as the RT for EBGP peering too.
2719 if (type
== ECOMMUNITY_ENCODE_AS
2720 || type
== ECOMMUNITY_ENCODE_AS4
2721 || type
== ECOMMUNITY_ENCODE_IP
) {
2722 memcpy(&eval_tmp
, eval
, ECOMMUNITY_SIZE
);
2723 mask_ecom_global_admin(&eval_tmp
, eval
);
2724 irt
= lookup_vrf_import_rt(&eval_tmp
);
2727 if (is_vrf_present_in_irt_vrfs(irt
->vrfs
, bgp_vrf
))
2735 * Given a route entry and a VNI, see if this route entry should be
2736 * imported into the VNI i.e., RTs match.
2738 static int is_route_matching_for_vni(struct bgp
*bgp
, struct bgpevpn
*vpn
,
2739 struct bgp_info
*ri
)
2741 struct attr
*attr
= ri
->attr
;
2742 struct ecommunity
*ecom
;
2746 /* Route should have valid RT to be even considered. */
2747 if (!(attr
->flag
& ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES
)))
2750 ecom
= attr
->ecommunity
;
2751 if (!ecom
|| !ecom
->size
)
2754 /* For each extended community RT, see if it matches this VNI. If any RT
2755 * matches, we're done.
2757 for (i
= 0; i
< ecom
->size
; i
++) {
2759 uint8_t type
, sub_type
;
2760 struct ecommunity_val
*eval
;
2761 struct ecommunity_val eval_tmp
;
2762 struct irt_node
*irt
;
2764 /* Only deal with RTs */
2765 pnt
= (ecom
->val
+ (i
* ECOMMUNITY_SIZE
));
2766 eval
= (struct ecommunity_val
*)(ecom
->val
2767 + (i
* ECOMMUNITY_SIZE
));
2770 if (sub_type
!= ECOMMUNITY_ROUTE_TARGET
)
2773 /* See if this RT matches specified VNIs import RTs */
2774 irt
= lookup_import_rt(bgp
, eval
);
2776 if (is_vni_present_in_irt_vnis(irt
->vnis
, vpn
))
2779 /* Also check for non-exact match. In this, we mask out the AS
2781 * only check on the local-admin sub-field. This is to
2783 * VNI as the RT for EBGP peering too.
2786 if (type
== ECOMMUNITY_ENCODE_AS
2787 || type
== ECOMMUNITY_ENCODE_AS4
2788 || type
== ECOMMUNITY_ENCODE_IP
) {
2789 memcpy(&eval_tmp
, eval
, ECOMMUNITY_SIZE
);
2790 mask_ecom_global_admin(&eval_tmp
, eval
);
2791 irt
= lookup_import_rt(bgp
, &eval_tmp
);
2794 if (is_vni_present_in_irt_vnis(irt
->vnis
, vpn
))
2801 static int install_uninstall_routes_for_es(struct bgp
*bgp
,
2808 char buf
[PREFIX_STRLEN
];
2809 char buf1
[ESI_STR_LEN
];
2810 struct bgp_node
*rd_rn
, *rn
;
2811 struct bgp_table
*table
;
2812 struct bgp_info
*ri
;
2818 * Walk entire global routing table and evaluate routes which could be
2819 * imported into this VRF. Note that we need to loop through all global
2820 * routes to determine which route matches the import rt on vrf
2822 for (rd_rn
= bgp_table_top(bgp
->rib
[afi
][safi
]); rd_rn
;
2823 rd_rn
= bgp_route_next(rd_rn
)) {
2824 table
= (struct bgp_table
*)(rd_rn
->info
);
2828 for (rn
= bgp_table_top(table
); rn
; rn
= bgp_route_next(rn
)) {
2829 struct prefix_evpn
*evp
= (struct prefix_evpn
*)&rn
->p
;
2831 for (ri
= rn
->info
; ri
; ri
= ri
->next
) {
2833 * Consider "valid" remote routes applicable for
2836 if (!(CHECK_FLAG(ri
->flags
, BGP_INFO_VALID
)
2837 && ri
->type
== ZEBRA_ROUTE_BGP
2838 && ri
->sub_type
== BGP_ROUTE_NORMAL
))
2841 if (!is_prefix_matching_for_es(evp
, es
))
2845 ret
= install_evpn_route_entry_in_es(
2848 ret
= uninstall_evpn_route_entry_in_es(
2854 "Failed to %s EVPN %s route in ESI %s",
2857 prefix2str(evp
, buf
,
2859 esi_to_str(&es
->esi
, buf1
,
2870 * Install or uninstall mac-ip routes are appropriate for this
2873 static int install_uninstall_routes_for_vrf(struct bgp
*bgp_vrf
, int install
)
2877 struct bgp_node
*rd_rn
, *rn
;
2878 struct bgp_table
*table
;
2879 struct bgp_info
*ri
;
2881 char buf
[PREFIX_STRLEN
];
2882 struct bgp
*bgp_def
= NULL
;
2886 bgp_def
= bgp_get_default();
2890 /* Walk entire global routing table and evaluate routes which could be
2891 * imported into this VRF. Note that we need to loop through all global
2892 * routes to determine which route matches the import rt on vrf
2894 for (rd_rn
= bgp_table_top(bgp_def
->rib
[afi
][safi
]); rd_rn
;
2895 rd_rn
= bgp_route_next(rd_rn
)) {
2896 table
= (struct bgp_table
*)(rd_rn
->info
);
2900 for (rn
= bgp_table_top(table
); rn
; rn
= bgp_route_next(rn
)) {
2901 struct prefix_evpn
*evp
= (struct prefix_evpn
*)&rn
->p
;
2903 /* if not mac-ip route skip this route */
2904 if (!(evp
->prefix
.route_type
== BGP_EVPN_MAC_IP_ROUTE
2905 || evp
->prefix
.route_type
2906 == BGP_EVPN_IP_PREFIX_ROUTE
))
2909 /* if not a mac+ip route skip this route */
2910 if (!(is_evpn_prefix_ipaddr_v4(evp
)
2911 || is_evpn_prefix_ipaddr_v6(evp
)))
2914 for (ri
= rn
->info
; ri
; ri
= ri
->next
) {
2915 /* Consider "valid" remote routes applicable for
2918 if (!(CHECK_FLAG(ri
->flags
, BGP_INFO_VALID
)
2919 && ri
->type
== ZEBRA_ROUTE_BGP
2920 && ri
->sub_type
== BGP_ROUTE_NORMAL
))
2923 if (is_route_matching_for_vrf(bgp_vrf
, ri
)) {
2925 ret
= install_evpn_route_entry_in_vrf(
2928 ret
= uninstall_evpn_route_entry_in_vrf(
2934 "Failed to %s EVPN %s route in VRF %s",
2937 prefix2str(evp
, buf
,
2952 * Install or uninstall routes of specified type that are appropriate for this
2955 static int install_uninstall_routes_for_vni(struct bgp
*bgp
,
2956 struct bgpevpn
*vpn
,
2957 bgp_evpn_route_type rtype
,
2962 struct bgp_node
*rd_rn
, *rn
;
2963 struct bgp_table
*table
;
2964 struct bgp_info
*ri
;
2970 /* Walk entire global routing table and evaluate routes which could be
2971 * imported into this VPN. Note that we cannot just look at the routes
2973 * the VNI's RD - remote routes applicable for this VNI could have any
2976 /* EVPN routes are a 2-level table. */
2977 for (rd_rn
= bgp_table_top(bgp
->rib
[afi
][safi
]); rd_rn
;
2978 rd_rn
= bgp_route_next(rd_rn
)) {
2979 table
= (struct bgp_table
*)(rd_rn
->info
);
2983 for (rn
= bgp_table_top(table
); rn
; rn
= bgp_route_next(rn
)) {
2984 struct prefix_evpn
*evp
= (struct prefix_evpn
*)&rn
->p
;
2986 if (evp
->prefix
.route_type
!= rtype
)
2989 for (ri
= rn
->info
; ri
; ri
= ri
->next
) {
2990 /* Consider "valid" remote routes applicable for
2992 if (!(CHECK_FLAG(ri
->flags
, BGP_INFO_VALID
)
2993 && ri
->type
== ZEBRA_ROUTE_BGP
2994 && ri
->sub_type
== BGP_ROUTE_NORMAL
))
2997 if (is_route_matching_for_vni(bgp
, vpn
, ri
)) {
2999 ret
= install_evpn_route_entry(
3002 ret
= uninstall_evpn_route_entry(
3008 "%u: Failed to %s EVPN %s route in VNI %u",
3012 rtype
== BGP_EVPN_MAC_IP_ROUTE
3026 /* Install any existing remote ES routes applicable for this ES into its routing
3027 * table. This is invoked when ES comes up.
3029 static int install_routes_for_es(struct bgp
*bgp
, struct evpnes
*es
)
3031 return install_uninstall_routes_for_es(bgp
, es
, 1);
3035 /* Install any existing remote routes applicable for this VRF into VRF RIB. This
3036 * is invoked upon l3vni-add or l3vni import rt change
3038 static int install_routes_for_vrf(struct bgp
*bgp_vrf
)
3040 install_uninstall_routes_for_vrf(bgp_vrf
, 1);
3045 * Install any existing remote routes applicable for this VNI into its
3046 * routing table. This is invoked when a VNI becomes "live" or its Import
3049 static int install_routes_for_vni(struct bgp
*bgp
, struct bgpevpn
*vpn
)
3053 /* Install type-3 routes followed by type-2 routes - the ones applicable
3056 ret
= install_uninstall_routes_for_vni(bgp
, vpn
, BGP_EVPN_IMET_ROUTE
,
3061 return install_uninstall_routes_for_vni(bgp
, vpn
, BGP_EVPN_MAC_IP_ROUTE
,
3065 /* uninstall routes from l3vni vrf. */
3066 static int uninstall_routes_for_vrf(struct bgp
*bgp_vrf
)
3068 install_uninstall_routes_for_vrf(bgp_vrf
, 0);
3073 * Uninstall any existing remote routes for this VNI. One scenario in which
3074 * this is invoked is upon an import RT change.
3076 static int uninstall_routes_for_vni(struct bgp
*bgp
, struct bgpevpn
*vpn
)
3080 /* Uninstall type-2 routes followed by type-3 routes - the ones
3084 ret
= install_uninstall_routes_for_vni(bgp
, vpn
, BGP_EVPN_MAC_IP_ROUTE
,
3089 return install_uninstall_routes_for_vni(bgp
, vpn
, BGP_EVPN_IMET_ROUTE
,
3093 /* Install or unistall route in ES */
3094 static int install_uninstall_route_in_es(struct bgp
*bgp
, struct evpnes
*es
,
3095 afi_t afi
, safi_t safi
,
3096 struct prefix_evpn
*evp
,
3097 struct bgp_info
*ri
,
3101 char buf
[ESI_STR_LEN
];
3104 ret
= install_evpn_route_entry_in_es(bgp
, es
, evp
, ri
);
3106 ret
= uninstall_evpn_route_entry_in_es(bgp
, es
, evp
, ri
);
3111 "%u: Failed to %s EVPN %s route in ESI %s", bgp
->vrf_id
,
3112 install
? "install" : "uninstall", "ES",
3113 esi_to_str(&evp
->prefix
.es_addr
.esi
, buf
, sizeof(buf
)));
3120 * Install or uninstall route in matching VRFs (list).
3122 static int install_uninstall_route_in_vrfs(struct bgp
*bgp_def
, afi_t afi
,
3123 safi_t safi
, struct prefix_evpn
*evp
,
3124 struct bgp_info
*ri
,
3125 struct list
*vrfs
, int install
)
3127 char buf
[PREFIX2STR_BUFFER
];
3128 struct bgp
*bgp_vrf
;
3129 struct listnode
*node
, *nnode
;
3131 /* Only type-2/type-5 routes go into a VRF */
3132 if (!(evp
->prefix
.route_type
== BGP_EVPN_MAC_IP_ROUTE
3133 || evp
->prefix
.route_type
== BGP_EVPN_IP_PREFIX_ROUTE
))
3136 /* if it is type-2 route and not a mac+ip route skip this route */
3137 if ((evp
->prefix
.route_type
== BGP_EVPN_MAC_IP_ROUTE
)
3138 && !(is_evpn_prefix_ipaddr_v4(evp
)
3139 || is_evpn_prefix_ipaddr_v6(evp
)))
3142 for (ALL_LIST_ELEMENTS(vrfs
, node
, nnode
, bgp_vrf
)) {
3146 ret
= install_evpn_route_entry_in_vrf(bgp_vrf
, evp
, ri
);
3148 ret
= uninstall_evpn_route_entry_in_vrf(bgp_vrf
, evp
,
3152 flog_err(BGP_ERR_EVPN_FAIL
,
3153 "%u: Failed to %s prefix %s in VRF %s",
3155 install
? "install" : "uninstall",
3156 prefix2str(evp
, buf
, sizeof(buf
)),
3157 vrf_id_to_name(bgp_vrf
->vrf_id
));
3166 * Install or uninstall route in matching VNIs (list).
3168 static int install_uninstall_route_in_vnis(struct bgp
*bgp
, afi_t afi
,
3169 safi_t safi
, struct prefix_evpn
*evp
,
3170 struct bgp_info
*ri
,
3171 struct list
*vnis
, int install
)
3173 struct bgpevpn
*vpn
;
3174 struct listnode
*node
, *nnode
;
3176 for (ALL_LIST_ELEMENTS(vnis
, node
, nnode
, vpn
)) {
3179 if (!is_vni_live(vpn
))
3183 ret
= install_evpn_route_entry(bgp
, vpn
, evp
, ri
);
3185 ret
= uninstall_evpn_route_entry(bgp
, vpn
, evp
, ri
);
3190 "%u: Failed to %s EVPN %s route in VNI %u",
3191 bgp
->vrf_id
, install
? "install" : "uninstall",
3192 evp
->prefix
.route_type
== BGP_EVPN_MAC_IP_ROUTE
3204 * Install or uninstall route for appropriate VNIs/ESIs.
3206 static int install_uninstall_evpn_route(struct bgp
*bgp
, afi_t afi
, safi_t safi
,
3207 struct prefix
*p
, struct bgp_info
*ri
,
3210 struct prefix_evpn
*evp
= (struct prefix_evpn
*)p
;
3211 struct attr
*attr
= ri
->attr
;
3212 struct ecommunity
*ecom
;
3217 /* Only type-2, type-3, type-4 and type-5 are supported currently */
3218 if (!(evp
->prefix
.route_type
== BGP_EVPN_MAC_IP_ROUTE
3219 || evp
->prefix
.route_type
== BGP_EVPN_IMET_ROUTE
3220 || evp
->prefix
.route_type
== BGP_EVPN_ES_ROUTE
3221 || evp
->prefix
.route_type
== BGP_EVPN_IP_PREFIX_ROUTE
))
3224 /* If we don't have Route Target, nothing much to do. */
3225 if (!(attr
->flag
& ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES
)))
3228 ecom
= attr
->ecommunity
;
3229 if (!ecom
|| !ecom
->size
)
3232 /* An EVPN route belongs to a VNI or a VRF or an ESI based on the RTs
3233 * attached to the route */
3234 for (i
= 0; i
< ecom
->size
; i
++) {
3236 uint8_t type
, sub_type
;
3237 struct ecommunity_val
*eval
;
3238 struct ecommunity_val eval_tmp
;
3239 struct irt_node
*irt
; /* import rt for l2vni */
3240 struct vrf_irt_node
*vrf_irt
; /* import rt for l3vni */
3243 /* Only deal with RTs */
3244 pnt
= (ecom
->val
+ (i
* ECOMMUNITY_SIZE
));
3245 eval
= (struct ecommunity_val
*)(ecom
->val
3246 + (i
* ECOMMUNITY_SIZE
));
3249 if (sub_type
!= ECOMMUNITY_ROUTE_TARGET
)
3253 * macip routes (type-2) are imported into VNI and VRF tables.
3254 * IMET route is imported into VNI table.
3255 * prefix routes are imported into VRF table.
3257 if (evp
->prefix
.route_type
== BGP_EVPN_MAC_IP_ROUTE
||
3258 evp
->prefix
.route_type
== BGP_EVPN_IMET_ROUTE
||
3259 evp
->prefix
.route_type
== BGP_EVPN_IP_PREFIX_ROUTE
) {
3261 irt
= lookup_import_rt(bgp
, eval
);
3263 install_uninstall_route_in_vnis(bgp
, afi
, safi
,
3268 vrf_irt
= lookup_vrf_import_rt(eval
);
3270 install_uninstall_route_in_vrfs(bgp
, afi
, safi
,
3275 /* Also check for non-exact match.
3276 * In this, we mask out the AS and
3277 * only check on the local-admin sub-field.
3278 * This is to facilitate using
3279 * VNI as the RT for EBGP peering too.
3283 if (type
== ECOMMUNITY_ENCODE_AS
3284 || type
== ECOMMUNITY_ENCODE_AS4
3285 || type
== ECOMMUNITY_ENCODE_IP
) {
3286 memcpy(&eval_tmp
, eval
, ECOMMUNITY_SIZE
);
3287 mask_ecom_global_admin(&eval_tmp
, eval
);
3288 irt
= lookup_import_rt(bgp
, &eval_tmp
);
3289 vrf_irt
= lookup_vrf_import_rt(&eval_tmp
);
3293 install_uninstall_route_in_vnis(bgp
, afi
, safi
,
3298 install_uninstall_route_in_vrfs(bgp
, afi
, safi
,
3304 /* es route is imported into the es table */
3305 if (evp
->prefix
.route_type
== BGP_EVPN_ES_ROUTE
) {
3307 /* we will match based on the entire esi to avoid
3308 * imoort of an es route for esi2 into esi1
3310 es
= bgp_evpn_lookup_es(bgp
, &evp
->prefix
.es_addr
.esi
);
3311 if (es
&& is_es_local(es
))
3312 install_uninstall_route_in_es(bgp
, es
,
3322 * delete and withdraw all ipv4 and ipv6 routes in the vrf table as type-5
3325 static void delete_withdraw_vrf_routes(struct bgp
*bgp_vrf
)
3327 /* delete all ipv4 routes and withdraw from peers */
3328 if (advertise_type5_routes(bgp_vrf
, AFI_IP
))
3329 bgp_evpn_withdraw_type5_routes(bgp_vrf
, AFI_IP
, SAFI_UNICAST
);
3331 /* delete all ipv6 routes and withdraw from peers */
3332 if (advertise_type5_routes(bgp_vrf
, AFI_IP6
))
3333 bgp_evpn_withdraw_type5_routes(bgp_vrf
, AFI_IP6
, SAFI_UNICAST
);
3337 * update and advertise all ipv4 and ipv6 routes in thr vrf table as type-5
3340 static void update_advertise_vrf_routes(struct bgp
*bgp_vrf
)
3342 /* update all ipv4 routes */
3343 if (advertise_type5_routes(bgp_vrf
, AFI_IP
))
3344 bgp_evpn_advertise_type5_routes(bgp_vrf
, AFI_IP
, SAFI_UNICAST
);
3346 /* update all ipv6 routes */
3347 if (advertise_type5_routes(bgp_vrf
, AFI_IP6
))
3348 bgp_evpn_advertise_type5_routes(bgp_vrf
, AFI_IP6
, SAFI_UNICAST
);
3352 * update and advertise local routes for a VRF as type-5 routes.
3353 * This is invoked upon RD change for a VRF. Note taht the processing is only
3354 * done in the global route table using the routes which already exist in the
3357 static void update_router_id_vrf(struct bgp
*bgp_vrf
)
3359 /* skip if the RD is configured */
3360 if (is_vrf_rd_configured(bgp_vrf
))
3363 /* derive the RD for the VRF based on new router-id */
3364 bgp_evpn_derive_auto_rd_for_vrf(bgp_vrf
);
3366 /* update advertise ipv4|ipv6 routes as type-5 routes */
3367 update_advertise_vrf_routes(bgp_vrf
);
3371 * Delete and withdraw all type-5 routes for the RD corresponding to VRF.
3372 * This is invoked upon VRF RD change. The processing is done only from global
3375 static void withdraw_router_id_vrf(struct bgp
*bgp_vrf
)
3377 /* skip if the RD is configured */
3378 if (is_vrf_rd_configured(bgp_vrf
))
3381 /* delete/withdraw ipv4|ipv6 routes as type-5 routes */
3382 delete_withdraw_vrf_routes(bgp_vrf
);
3386 * Update and advertise local routes for a VNI. Invoked upon router-id
3387 * change. Note that the processing is done only on the global route table
3388 * using routes that already exist in the per-VNI table.
3390 static int update_advertise_vni_routes(struct bgp
*bgp
, struct bgpevpn
*vpn
)
3392 struct prefix_evpn p
;
3393 struct bgp_node
*rn
, *global_rn
;
3394 struct bgp_info
*ri
, *global_ri
;
3396 afi_t afi
= AFI_L2VPN
;
3397 safi_t safi
= SAFI_EVPN
;
3399 /* Locate type-3 route for VNI in the per-VNI table and use its
3400 * attributes to create and advertise the type-3 route for this VNI
3401 * in the global table.
3403 build_evpn_type3_prefix(&p
, vpn
->originator_ip
);
3404 rn
= bgp_node_lookup(vpn
->route_table
, (struct prefix
*)&p
);
3405 if (!rn
) /* unexpected */
3407 for (ri
= rn
->info
; ri
; ri
= ri
->next
)
3408 if (ri
->peer
== bgp
->peer_self
&& ri
->type
== ZEBRA_ROUTE_BGP
3409 && ri
->sub_type
== BGP_ROUTE_STATIC
)
3411 if (!ri
) /* unexpected */
3415 global_rn
= bgp_afi_node_get(bgp
->rib
[afi
][safi
], afi
, safi
,
3416 (struct prefix
*)&p
, &vpn
->prd
);
3417 update_evpn_route_entry(bgp
, vpn
, afi
, safi
, global_rn
, attr
, 1, &ri
,
3418 0, mac_mobility_seqnum(attr
));
3420 /* Schedule for processing and unlock node. */
3421 bgp_process(bgp
, global_rn
, afi
, safi
);
3422 bgp_unlock_node(global_rn
);
3424 /* Now, walk this VNI's route table and use the route and its attribute
3425 * to create and schedule route in global table.
3427 for (rn
= bgp_table_top(vpn
->route_table
); rn
;
3428 rn
= bgp_route_next(rn
)) {
3429 struct prefix_evpn
*evp
= (struct prefix_evpn
*)&rn
->p
;
3431 /* Identify MAC-IP local routes. */
3432 if (evp
->prefix
.route_type
!= BGP_EVPN_MAC_IP_ROUTE
)
3435 for (ri
= rn
->info
; ri
; ri
= ri
->next
)
3436 if (ri
->peer
== bgp
->peer_self
3437 && ri
->type
== ZEBRA_ROUTE_BGP
3438 && ri
->sub_type
== BGP_ROUTE_STATIC
)
3443 /* Create route in global routing table using this route entry's
3447 global_rn
= bgp_afi_node_get(bgp
->rib
[afi
][safi
], afi
, safi
,
3448 (struct prefix
*)evp
, &vpn
->prd
);
3450 update_evpn_route_entry(bgp
, vpn
, afi
, safi
, global_rn
, attr
, 1,
3452 mac_mobility_seqnum(attr
));
3454 /* Schedule for processing and unlock node. */
3455 bgp_process(bgp
, global_rn
, afi
, safi
);
3456 bgp_unlock_node(global_rn
);
3463 * Delete (and withdraw) local routes for a VNI - only from the global
3464 * table. Invoked upon router-id change.
3466 static int delete_withdraw_vni_routes(struct bgp
*bgp
, struct bgpevpn
*vpn
)
3469 struct prefix_evpn p
;
3470 struct bgp_node
*global_rn
;
3471 struct bgp_info
*ri
;
3472 afi_t afi
= AFI_L2VPN
;
3473 safi_t safi
= SAFI_EVPN
;
3475 /* Delete and withdraw locally learnt type-2 routes (MACIP)
3476 * for this VNI - from the global table.
3478 ret
= delete_global_type2_routes(bgp
, vpn
);
3482 /* Remove type-3 route for this VNI from global table. */
3483 build_evpn_type3_prefix(&p
, vpn
->originator_ip
);
3484 global_rn
= bgp_afi_node_lookup(bgp
->rib
[afi
][safi
], afi
, safi
,
3485 (struct prefix
*)&p
, &vpn
->prd
);
3487 /* Delete route entry in the global EVPN table. */
3488 delete_evpn_route_entry(bgp
, afi
, safi
, global_rn
, &ri
);
3490 /* Schedule for processing - withdraws to peers happen from
3494 bgp_process(bgp
, global_rn
, afi
, safi
);
3495 bgp_unlock_node(global_rn
);
3502 * Handle router-id change. Update and advertise local routes corresponding
3503 * to this VNI from peers. Note that this is invoked after updating the
3504 * router-id. The routes in the per-VNI table are used to create routes in
3505 * the global table and schedule them.
3507 static void update_router_id_vni(struct hash_backet
*backet
, struct bgp
*bgp
)
3509 struct bgpevpn
*vpn
= (struct bgpevpn
*)backet
->data
;
3511 /* Skip VNIs with configured RD. */
3512 if (is_rd_configured(vpn
))
3515 bgp_evpn_derive_auto_rd(bgp
, vpn
);
3516 update_advertise_vni_routes(bgp
, vpn
);
3520 * Handle router-id change. Delete and withdraw local routes corresponding
3521 * to this VNI from peers. Note that this is invoked prior to updating
3522 * the router-id and is done only on the global route table, the routes
3523 * are needed in the per-VNI table to re-advertise with new router id.
3525 static void withdraw_router_id_vni(struct hash_backet
*backet
, struct bgp
*bgp
)
3527 struct bgpevpn
*vpn
= (struct bgpevpn
*)backet
->data
;
3529 /* Skip VNIs with configured RD. */
3530 if (is_rd_configured(vpn
))
3533 delete_withdraw_vni_routes(bgp
, vpn
);
3537 * Process received EVPN type-2 route (advertise or withdraw).
3539 static int process_type2_route(struct peer
*peer
, afi_t afi
, safi_t safi
,
3540 struct attr
*attr
, uint8_t *pfx
, int psize
,
3541 uint32_t addpath_id
)
3543 struct prefix_rd prd
;
3544 struct prefix_evpn p
;
3545 struct bgp_route_evpn evpn
;
3547 uint8_t macaddr_len
;
3548 mpls_label_t label
[BGP_MAX_LABELS
]; /* holds the VNI(s) as in packet */
3549 uint32_t num_labels
= 0;
3553 /* Type-2 route should be either 33, 37 or 49 bytes or an
3554 * additional 3 bytes if there is a second label (VNI):
3555 * RD (8), ESI (10), Eth Tag (4), MAC Addr Len (1),
3556 * MAC Addr (6), IP len (1), IP (0, 4 or 16),
3557 * MPLS Lbl1 (3), MPLS Lbl2 (0 or 3)
3559 if (psize
!= 33 && psize
!= 37 && psize
!= 49 && psize
!= 36
3560 && psize
!= 40 && psize
!= 52) {
3561 flog_err(BGP_ERR_EVPN_ROUTE_INVALID
,
3562 "%u:%s - Rx EVPN Type-2 NLRI with invalid length %d",
3563 peer
->bgp
->vrf_id
, peer
->host
, psize
);
3567 memset(&evpn
, 0, sizeof(evpn
));
3569 /* Make prefix_rd */
3570 prd
.family
= AF_UNSPEC
;
3572 memcpy(&prd
.val
, pfx
, 8);
3575 /* Make EVPN prefix. */
3576 memset(&p
, 0, sizeof(struct prefix_evpn
));
3578 p
.prefixlen
= EVPN_ROUTE_PREFIXLEN
;
3579 p
.prefix
.route_type
= BGP_EVPN_MAC_IP_ROUTE
;
3581 /* Copy Ethernet Seg Identifier */
3582 memcpy(&evpn
.eth_s_id
.val
, pfx
, ESI_LEN
);
3585 /* Copy Ethernet Tag */
3586 memcpy(ð_tag
, pfx
, 4);
3587 p
.prefix
.macip_addr
.eth_tag
= ntohl(eth_tag
);
3590 /* Get the MAC Addr len */
3591 macaddr_len
= *pfx
++;
3593 /* Get the MAC Addr */
3594 if (macaddr_len
== (ETH_ALEN
* 8)) {
3595 memcpy(&p
.prefix
.macip_addr
.mac
.octet
, pfx
, ETH_ALEN
);
3599 BGP_ERR_EVPN_ROUTE_INVALID
,
3600 "%u:%s - Rx EVPN Type-2 NLRI with unsupported MAC address length %d",
3601 peer
->bgp
->vrf_id
, peer
->host
, macaddr_len
);
3607 ipaddr_len
= *pfx
++;
3608 if (ipaddr_len
!= 0 && ipaddr_len
!= IPV4_MAX_BITLEN
3609 && ipaddr_len
!= IPV6_MAX_BITLEN
) {
3611 BGP_ERR_EVPN_ROUTE_INVALID
,
3612 "%u:%s - Rx EVPN Type-2 NLRI with unsupported IP address length %d",
3613 peer
->bgp
->vrf_id
, peer
->host
, ipaddr_len
);
3618 ipaddr_len
/= 8; /* Convert to bytes. */
3619 p
.prefix
.macip_addr
.ip
.ipa_type
= (ipaddr_len
== IPV4_MAX_BYTELEN
)
3622 memcpy(&p
.prefix
.macip_addr
.ip
.ip
.addr
, pfx
, ipaddr_len
);
3626 /* Get the VNI(s). Stored as bytes here. */
3628 memset(label
, 0, sizeof(label
));
3629 memcpy(&label
[0], pfx
, BGP_LABEL_BYTES
);
3630 pfx
+= BGP_LABEL_BYTES
;
3631 psize
-= (33 + ipaddr_len
);
3632 /* Do we have a second VNI? */
3635 memcpy(&label
[1], pfx
, BGP_LABEL_BYTES
);
3637 * If in future, we are required to access additional fields,
3638 * we MUST increment pfx by BGP_LABEL_BYTES in before reading
3643 /* Process the route. */
3645 ret
= bgp_update(peer
, (struct prefix
*)&p
, addpath_id
, attr
,
3646 afi
, safi
, ZEBRA_ROUTE_BGP
, BGP_ROUTE_NORMAL
,
3647 &prd
, &label
[0], num_labels
, 0, &evpn
);
3649 ret
= bgp_withdraw(peer
, (struct prefix
*)&p
, addpath_id
, attr
,
3650 afi
, safi
, ZEBRA_ROUTE_BGP
, BGP_ROUTE_NORMAL
,
3651 &prd
, &label
[0], num_labels
, &evpn
);
3656 * Process received EVPN type-3 route (advertise or withdraw).
3658 static int process_type3_route(struct peer
*peer
, afi_t afi
, safi_t safi
,
3659 struct attr
*attr
, uint8_t *pfx
, int psize
,
3660 uint32_t addpath_id
)
3662 struct prefix_rd prd
;
3663 struct prefix_evpn p
;
3668 /* Type-3 route should be either 17 or 29 bytes: RD (8), Eth Tag (4),
3669 * IP len (1) and IP (4 or 16).
3671 if (psize
!= 17 && psize
!= 29) {
3672 flog_err(BGP_ERR_EVPN_ROUTE_INVALID
,
3673 "%u:%s - Rx EVPN Type-3 NLRI with invalid length %d",
3674 peer
->bgp
->vrf_id
, peer
->host
, psize
);
3678 /* If PMSI is present, log if it is anything other than IR.
3679 * Note: We just simply ignore the values as it is not clear if
3680 * doing anything else is better.
3683 (attr
->flag
& ATTR_FLAG_BIT(BGP_ATTR_PMSI_TUNNEL
))) {
3684 if (attr
->pmsi_tnl_type
!= PMSI_TNLTYPE_INGR_REPL
) {
3685 zlog_warn("%u:%s - Rx EVPN Type-3 NLRI with unsupported PTA %d",
3686 peer
->bgp
->vrf_id
, peer
->host
,
3687 attr
->pmsi_tnl_type
);
3691 /* Make prefix_rd */
3692 prd
.family
= AF_UNSPEC
;
3694 memcpy(&prd
.val
, pfx
, 8);
3697 /* Make EVPN prefix. */
3698 memset(&p
, 0, sizeof(struct prefix_evpn
));
3700 p
.prefixlen
= EVPN_ROUTE_PREFIXLEN
;
3701 p
.prefix
.route_type
= BGP_EVPN_IMET_ROUTE
;
3703 /* Copy Ethernet Tag */
3704 memcpy(ð_tag
, pfx
, 4);
3705 p
.prefix
.imet_addr
.eth_tag
= ntohl(eth_tag
);
3709 ipaddr_len
= *pfx
++;
3710 if (ipaddr_len
== IPV4_MAX_BITLEN
) {
3711 p
.prefix
.imet_addr
.ip
.ipa_type
= IPADDR_V4
;
3712 memcpy(&p
.prefix
.imet_addr
.ip
.ip
.addr
, pfx
, IPV4_MAX_BYTELEN
);
3715 BGP_ERR_EVPN_ROUTE_INVALID
,
3716 "%u:%s - Rx EVPN Type-3 NLRI with unsupported IP address length %d",
3717 peer
->bgp
->vrf_id
, peer
->host
, ipaddr_len
);
3721 /* Process the route. */
3723 ret
= bgp_update(peer
, (struct prefix
*)&p
, addpath_id
, attr
,
3724 afi
, safi
, ZEBRA_ROUTE_BGP
, BGP_ROUTE_NORMAL
,
3725 &prd
, NULL
, 0, 0, NULL
);
3727 ret
= bgp_withdraw(peer
, (struct prefix
*)&p
, addpath_id
, attr
,
3728 afi
, safi
, ZEBRA_ROUTE_BGP
, BGP_ROUTE_NORMAL
,
3729 &prd
, NULL
, 0, NULL
);
3734 * Process received EVPN type-4 route (advertise or withdraw).
3736 static int process_type4_route(struct peer
*peer
, afi_t afi
, safi_t safi
,
3737 struct attr
*attr
, uint8_t *pfx
, int psize
,
3738 uint32_t addpath_id
)
3743 struct in_addr vtep_ip
;
3744 struct prefix_rd prd
;
3745 struct prefix_evpn p
;
3747 /* Type-4 route should be either 23 or 35 bytes
3748 * RD (8), ESI (10), ip-len (1), ip (4 or 16)
3750 if (psize
!= 23 && psize
!= 35) {
3751 flog_err(BGP_ERR_EVPN_ROUTE_INVALID
,
3752 "%u:%s - Rx EVPN Type-4 NLRI with invalid length %d",
3753 peer
->bgp
->vrf_id
, peer
->host
, psize
);
3757 /* Make prefix_rd */
3758 prd
.family
= AF_UNSPEC
;
3760 memcpy(&prd
.val
, pfx
, 8);
3764 memcpy(&esi
, pfx
, ESI_BYTES
);
3769 ipaddr_len
= *pfx
++;
3770 if (ipaddr_len
== IPV4_MAX_BITLEN
) {
3771 memcpy(&vtep_ip
, pfx
, IPV4_MAX_BYTELEN
);
3774 BGP_ERR_EVPN_ROUTE_INVALID
,
3775 "%u:%s - Rx EVPN Type-4 NLRI with unsupported IP address length %d",
3776 peer
->bgp
->vrf_id
, peer
->host
, ipaddr_len
);
3780 build_evpn_type4_prefix(&p
, &esi
, vtep_ip
);
3781 /* Process the route. */
3783 ret
= bgp_update(peer
, (struct prefix
*)&p
, addpath_id
, attr
,
3784 afi
, safi
, ZEBRA_ROUTE_BGP
, BGP_ROUTE_NORMAL
,
3785 &prd
, NULL
, 0, 0, NULL
);
3787 ret
= bgp_withdraw(peer
, (struct prefix
*)&p
, addpath_id
, attr
,
3788 afi
, safi
, ZEBRA_ROUTE_BGP
, BGP_ROUTE_NORMAL
,
3789 &prd
, NULL
, 0, NULL
);
3796 * Process received EVPN type-5 route (advertise or withdraw).
3798 static int process_type5_route(struct peer
*peer
, afi_t afi
, safi_t safi
,
3799 struct attr
*attr
, uint8_t *pfx
, int psize
,
3800 uint32_t addpath_id
, int withdraw
)
3802 struct prefix_rd prd
;
3803 struct prefix_evpn p
;
3804 struct bgp_route_evpn evpn
;
3807 mpls_label_t label
; /* holds the VNI as in the packet */
3810 /* Type-5 route should be 34 or 58 bytes:
3811 * RD (8), ESI (10), Eth Tag (4), IP len (1), IP (4 or 16),
3812 * GW (4 or 16) and VNI (3).
3813 * Note that the IP and GW should both be IPv4 or both IPv6.
3815 if (psize
!= 34 && psize
!= 58) {
3816 flog_err(BGP_ERR_EVPN_ROUTE_INVALID
,
3817 "%u:%s - Rx EVPN Type-5 NLRI with invalid length %d",
3818 peer
->bgp
->vrf_id
, peer
->host
, psize
);
3822 /* Make prefix_rd */
3823 prd
.family
= AF_UNSPEC
;
3825 memcpy(&prd
.val
, pfx
, 8);
3828 /* Make EVPN prefix. */
3829 memset(&p
, 0, sizeof(struct prefix_evpn
));
3831 p
.prefixlen
= EVPN_ROUTE_PREFIXLEN
;
3832 p
.prefix
.route_type
= BGP_EVPN_IP_PREFIX_ROUTE
;
3834 /* Additional information outside of prefix - ESI and GW IP */
3835 memset(&evpn
, 0, sizeof(evpn
));
3838 memcpy(&evpn
.eth_s_id
.val
, pfx
, 10);
3841 /* Fetch Ethernet Tag. */
3842 memcpy(ð_tag
, pfx
, 4);
3843 p
.prefix
.prefix_addr
.eth_tag
= ntohl(eth_tag
);
3846 /* Fetch IP prefix length. */
3848 if (ippfx_len
> IPV6_MAX_BITLEN
) {
3850 BGP_ERR_EVPN_ROUTE_INVALID
,
3851 "%u:%s - Rx EVPN Type-5 NLRI with invalid IP Prefix length %d",
3852 peer
->bgp
->vrf_id
, peer
->host
, ippfx_len
);
3855 p
.prefix
.prefix_addr
.ip_prefix_length
= ippfx_len
;
3857 /* Determine IPv4 or IPv6 prefix */
3858 /* Since the address and GW are from the same family, this just becomes
3859 * a simple check on the total size.
3862 SET_IPADDR_V4(&p
.prefix
.prefix_addr
.ip
);
3863 memcpy(&p
.prefix
.prefix_addr
.ip
.ipaddr_v4
, pfx
, 4);
3865 memcpy(&evpn
.gw_ip
.ipv4
, pfx
, 4);
3868 SET_IPADDR_V6(&p
.prefix
.prefix_addr
.ip
);
3869 memcpy(&p
.prefix
.prefix_addr
.ip
.ipaddr_v6
, pfx
, 16);
3871 memcpy(&evpn
.gw_ip
.ipv6
, pfx
, 16);
3875 /* Get the VNI (in MPLS label field). Stored as bytes here. */
3876 memset(&label
, 0, sizeof(label
));
3877 memcpy(&label
, pfx
, BGP_LABEL_BYTES
);
3880 * If in future, we are required to access additional fields,
3881 * we MUST increment pfx by BGP_LABEL_BYTES in before reading the next
3885 /* Process the route. */
3887 ret
= bgp_update(peer
, (struct prefix
*)&p
, addpath_id
, attr
,
3888 afi
, safi
, ZEBRA_ROUTE_BGP
, BGP_ROUTE_NORMAL
,
3889 &prd
, &label
, 1, 0, &evpn
);
3891 ret
= bgp_withdraw(peer
, (struct prefix
*)&p
, addpath_id
, attr
,
3892 afi
, safi
, ZEBRA_ROUTE_BGP
, BGP_ROUTE_NORMAL
,
3893 &prd
, &label
, 1, &evpn
);
3898 static void evpn_mpattr_encode_type5(struct stream
*s
, struct prefix
*p
,
3899 struct prefix_rd
*prd
, mpls_label_t
*label
,
3900 uint32_t num_labels
, struct attr
*attr
)
3904 struct evpn_addr
*p_evpn_p
;
3906 memset(&temp
, 0, 16);
3907 if (p
->family
!= AF_EVPN
)
3909 p_evpn_p
= &(p
->u
.prefix_evpn
);
3911 /* len denites the total len of IP and GW-IP in the route
3912 IP and GW-IP have to be both ipv4 or ipv6
3914 if (IS_IPADDR_V4(&p_evpn_p
->prefix_addr
.ip
))
3915 len
= 8; /* IP and GWIP are both ipv4 */
3917 len
= 32; /* IP and GWIP are both ipv6 */
3918 /* Prefix contains RD, ESI, EthTag, IP length, IP, GWIP and VNI */
3919 stream_putc(s
, 8 + 10 + 4 + 1 + len
+ 3);
3920 stream_put(s
, prd
->val
, 8);
3922 stream_put(s
, &(attr
->evpn_overlay
.eth_s_id
), 10);
3924 stream_put(s
, &temp
, 10);
3925 stream_putl(s
, p_evpn_p
->prefix_addr
.eth_tag
);
3926 stream_putc(s
, p_evpn_p
->prefix_addr
.ip_prefix_length
);
3927 if (IS_IPADDR_V4(&p_evpn_p
->prefix_addr
.ip
))
3928 stream_put_ipv4(s
, p_evpn_p
->prefix_addr
.ip
.ipaddr_v4
.s_addr
);
3930 stream_put(s
, &p_evpn_p
->prefix_addr
.ip
.ipaddr_v6
, 16);
3932 if (IS_IPADDR_V4(&p_evpn_p
->prefix_addr
.ip
))
3934 attr
->evpn_overlay
.gw_ip
.ipv4
.s_addr
);
3936 stream_put(s
, &(attr
->evpn_overlay
.gw_ip
.ipv6
), 16);
3938 if (IS_IPADDR_V4(&p_evpn_p
->prefix_addr
.ip
))
3939 stream_put_ipv4(s
, 0);
3941 stream_put(s
, &temp
, 16);
3945 stream_put(s
, label
, 3);
3951 * Cleanup specific VNI upon EVPN (advertise-all-vni) being disabled.
3953 static void cleanup_vni_on_disable(struct hash_backet
*backet
, struct bgp
*bgp
)
3955 struct bgpevpn
*vpn
= (struct bgpevpn
*)backet
->data
;
3957 /* Remove EVPN routes and schedule for processing. */
3958 delete_routes_for_vni(bgp
, vpn
);
3960 /* Clear "live" flag and see if hash needs to be freed. */
3961 UNSET_FLAG(vpn
->flags
, VNI_FLAG_LIVE
);
3962 if (!is_vni_configured(vpn
))
3963 bgp_evpn_free(bgp
, vpn
);
3967 * Free a VNI entry; iterator function called during cleanup.
3969 static void free_vni_entry(struct hash_backet
*backet
, struct bgp
*bgp
)
3971 struct bgpevpn
*vpn
= (struct bgpevpn
*)backet
->data
;
3973 delete_all_vni_routes(bgp
, vpn
);
3974 bgp_evpn_free(bgp
, vpn
);
3978 * Derive AUTO import RT for BGP VRF - L3VNI
3980 static void evpn_auto_rt_import_add_for_vrf(struct bgp
*bgp_vrf
)
3982 struct bgp
*bgp_def
= NULL
;
3984 form_auto_rt(bgp_vrf
, bgp_vrf
->l3vni
, bgp_vrf
->vrf_import_rtl
);
3985 UNSET_FLAG(bgp_vrf
->vrf_flags
, BGP_VRF_IMPORT_RT_CFGD
);
3988 bgp_def
= bgp_get_default();
3991 bgp_evpn_map_vrf_to_its_rts(bgp_vrf
);
3995 * Delete AUTO import RT from BGP VRF - L3VNI
3997 static void evpn_auto_rt_import_delete_for_vrf(struct bgp
*bgp_vrf
)
3999 evpn_rt_delete_auto(bgp_vrf
, bgp_vrf
->l3vni
, bgp_vrf
->vrf_import_rtl
);
4003 * Derive AUTO export RT for BGP VRF - L3VNI
4005 static void evpn_auto_rt_export_add_for_vrf(struct bgp
*bgp_vrf
)
4007 UNSET_FLAG(bgp_vrf
->vrf_flags
, BGP_VRF_EXPORT_RT_CFGD
);
4008 form_auto_rt(bgp_vrf
, bgp_vrf
->l3vni
, bgp_vrf
->vrf_export_rtl
);
4012 * Delete AUTO export RT from BGP VRF - L3VNI
4014 static void evpn_auto_rt_export_delete_for_vrf(struct bgp
*bgp_vrf
)
4016 evpn_rt_delete_auto(bgp_vrf
, bgp_vrf
->l3vni
, bgp_vrf
->vrf_export_rtl
);
4019 static void bgp_evpn_handle_export_rt_change_for_vrf(struct bgp
*bgp_vrf
)
4021 struct bgp
*bgp_def
= NULL
;
4022 struct listnode
*node
= NULL
;
4023 struct bgpevpn
*vpn
= NULL
;
4025 bgp_def
= bgp_get_default();
4029 /* update all type-5 routes */
4030 update_advertise_vrf_routes(bgp_vrf
);
4032 /* update all type-2 routes */
4033 for (ALL_LIST_ELEMENTS_RO(bgp_vrf
->l2vnis
, node
, vpn
))
4034 update_routes_for_vni(bgp_def
, vpn
);
4038 * Handle autort change for a given VNI.
4040 static void update_autort_vni(struct hash_backet
*backet
, struct bgp
*bgp
)
4042 struct bgpevpn
*vpn
= backet
->data
;
4044 if (!is_import_rt_configured(vpn
)) {
4045 if (is_vni_live(vpn
))
4046 bgp_evpn_uninstall_routes(bgp
, vpn
);
4047 bgp_evpn_unmap_vni_from_its_rts(bgp
, vpn
);
4048 list_delete_all_node(vpn
->import_rtl
);
4049 bgp_evpn_derive_auto_rt_import(bgp
, vpn
);
4050 if (is_vni_live(vpn
))
4051 bgp_evpn_install_routes(bgp
, vpn
);
4053 if (!is_export_rt_configured(vpn
)) {
4054 list_delete_all_node(vpn
->export_rtl
);
4055 bgp_evpn_derive_auto_rt_export(bgp
, vpn
);
4056 if (is_vni_live(vpn
))
4057 bgp_evpn_handle_export_rt_change(bgp
, vpn
);
4065 /* withdraw type-5 route corresponding to ip prefix */
4066 void bgp_evpn_withdraw_type5_route(struct bgp
*bgp_vrf
, struct prefix
*p
,
4067 afi_t afi
, safi_t safi
)
4070 struct prefix_evpn evp
;
4071 char buf
[PREFIX_STRLEN
];
4073 build_type5_prefix_from_ip_prefix(&evp
, p
);
4074 ret
= delete_evpn_type5_route(bgp_vrf
, &evp
);
4077 BGP_ERR_EVPN_ROUTE_DELETE
,
4078 "%u failed to delete type-5 route for prefix %s in vrf %s",
4079 bgp_vrf
->vrf_id
, prefix2str(p
, buf
, sizeof(buf
)),
4080 vrf_id_to_name(bgp_vrf
->vrf_id
));
4084 /* withdraw all type-5 routes for an address family */
4085 void bgp_evpn_withdraw_type5_routes(struct bgp
*bgp_vrf
, afi_t afi
, safi_t safi
)
4087 struct bgp_table
*table
= NULL
;
4088 struct bgp_node
*rn
= NULL
;
4089 struct bgp_info
*ri
;
4091 table
= bgp_vrf
->rib
[afi
][safi
];
4092 for (rn
= bgp_table_top(table
); rn
; rn
= bgp_route_next(rn
)) {
4093 /* Only care about "selected" routes - non-imported. */
4094 /* TODO: Support for AddPath for EVPN. */
4095 for (ri
= rn
->info
; ri
; ri
= ri
->next
) {
4096 if (CHECK_FLAG(ri
->flags
, BGP_INFO_SELECTED
)
4097 && (!ri
->extra
|| !ri
->extra
->parent
)) {
4098 bgp_evpn_withdraw_type5_route(bgp_vrf
, &rn
->p
,
4107 * Advertise IP prefix as type-5 route. The afi/safi and src_attr passed
4108 * to this function correspond to those of the source IP prefix (best
4109 * path in the case of the attr. In the case of a local prefix (when we
4110 * are advertising local subnets), the src_attr will be NULL.
4112 void bgp_evpn_advertise_type5_route(struct bgp
*bgp_vrf
, struct prefix
*p
,
4113 struct attr
*src_attr
, afi_t afi
,
4117 struct prefix_evpn evp
;
4118 char buf
[PREFIX_STRLEN
];
4120 build_type5_prefix_from_ip_prefix(&evp
, p
);
4121 ret
= update_evpn_type5_route(bgp_vrf
, &evp
, src_attr
);
4123 flog_err(BGP_ERR_EVPN_ROUTE_CREATE
,
4124 "%u: Failed to create type-5 route for prefix %s",
4125 bgp_vrf
->vrf_id
, prefix2str(p
, buf
, sizeof(buf
)));
4128 /* Inject all prefixes of a particular address-family (currently, IPv4 or
4129 * IPv6 unicast) into EVPN as type-5 routes. This is invoked when the
4130 * advertisement is enabled.
4132 void bgp_evpn_advertise_type5_routes(struct bgp
*bgp_vrf
, afi_t afi
,
4135 struct bgp_table
*table
= NULL
;
4136 struct bgp_node
*rn
= NULL
;
4137 struct bgp_info
*ri
;
4139 table
= bgp_vrf
->rib
[afi
][safi
];
4140 for (rn
= bgp_table_top(table
); rn
; rn
= bgp_route_next(rn
)) {
4141 /* Need to identify the "selected" route entry to use its
4142 * attribute. Also, we only consider "non-imported" routes.
4143 * TODO: Support for AddPath for EVPN.
4145 for (ri
= rn
->info
; ri
; ri
= ri
->next
) {
4146 if (CHECK_FLAG(ri
->flags
, BGP_INFO_SELECTED
)
4147 && (!ri
->extra
|| !ri
->extra
->parent
)) {
4149 /* apply the route-map */
4150 if (bgp_vrf
->adv_cmd_rmap
[afi
][safi
].map
) {
4153 ret
= route_map_apply(
4154 bgp_vrf
->adv_cmd_rmap
[afi
][safi
]
4156 &rn
->p
, RMAP_BGP
, ri
);
4157 if (ret
== RMAP_DENYMATCH
)
4160 bgp_evpn_advertise_type5_route(
4161 bgp_vrf
, &rn
->p
, ri
->attr
, afi
, safi
);
4168 void evpn_rt_delete_auto(struct bgp
*bgp
, vni_t vni
, struct list
*rtl
)
4170 struct listnode
*node
, *nnode
, *node_to_del
;
4171 struct ecommunity
*ecom
, *ecom_auto
;
4172 struct ecommunity_val eval
;
4174 if (bgp
->advertise_autort_rfc8365
)
4175 vni
|= EVPN_AUTORT_VXLAN
;
4176 encode_route_target_as((bgp
->as
& 0xFFFF), vni
, &eval
);
4178 ecom_auto
= ecommunity_new();
4179 ecommunity_add_val(ecom_auto
, &eval
);
4182 for (ALL_LIST_ELEMENTS(rtl
, node
, nnode
, ecom
)) {
4183 if (ecommunity_match(ecom
, ecom_auto
)) {
4184 ecommunity_free(&ecom
);
4190 list_delete_node(rtl
, node_to_del
);
4192 ecommunity_free(&ecom_auto
);
4195 void bgp_evpn_configure_import_rt_for_vrf(struct bgp
*bgp_vrf
,
4196 struct ecommunity
*ecomadd
)
4198 /* uninstall routes from vrf */
4199 uninstall_routes_for_vrf(bgp_vrf
);
4201 /* Cleanup the RT to VRF mapping */
4202 bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf
);
4204 /* Remove auto generated RT */
4205 evpn_auto_rt_import_delete_for_vrf(bgp_vrf
);
4207 /* Add the newly configured RT to RT list */
4208 listnode_add_sort(bgp_vrf
->vrf_import_rtl
, ecomadd
);
4209 SET_FLAG(bgp_vrf
->vrf_flags
, BGP_VRF_IMPORT_RT_CFGD
);
4211 /* map VRF to its RTs */
4212 bgp_evpn_map_vrf_to_its_rts(bgp_vrf
);
4214 /* install routes matching the new VRF */
4215 install_routes_for_vrf(bgp_vrf
);
4218 void bgp_evpn_unconfigure_import_rt_for_vrf(struct bgp
*bgp_vrf
,
4219 struct ecommunity
*ecomdel
)
4221 struct listnode
*node
= NULL
, *nnode
= NULL
, *node_to_del
= NULL
;
4222 struct ecommunity
*ecom
= NULL
;
4224 /* uninstall routes from vrf */
4225 uninstall_routes_for_vrf(bgp_vrf
);
4227 /* Cleanup the RT to VRF mapping */
4228 bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf
);
4230 /* remove the RT from the RT list */
4231 for (ALL_LIST_ELEMENTS(bgp_vrf
->vrf_import_rtl
, node
, nnode
, ecom
)) {
4232 if (ecommunity_match(ecom
, ecomdel
)) {
4233 ecommunity_free(&ecom
);
4240 list_delete_node(bgp_vrf
->vrf_import_rtl
, node_to_del
);
4242 assert(bgp_vrf
->vrf_import_rtl
);
4243 /* fallback to auto import rt, if this was the last RT */
4244 if (bgp_vrf
->vrf_import_rtl
&& list_isempty(bgp_vrf
->vrf_import_rtl
)) {
4245 UNSET_FLAG(bgp_vrf
->vrf_flags
, BGP_VRF_IMPORT_RT_CFGD
);
4246 evpn_auto_rt_import_add_for_vrf(bgp_vrf
);
4249 /* map VRFs to its RTs */
4250 bgp_evpn_map_vrf_to_its_rts(bgp_vrf
);
4252 /* install routes matching this new RT */
4253 install_routes_for_vrf(bgp_vrf
);
4256 void bgp_evpn_configure_export_rt_for_vrf(struct bgp
*bgp_vrf
,
4257 struct ecommunity
*ecomadd
)
4259 /* remove auto-generated RT */
4260 evpn_auto_rt_export_delete_for_vrf(bgp_vrf
);
4262 /* Add the new RT to the RT list */
4263 listnode_add_sort(bgp_vrf
->vrf_export_rtl
, ecomadd
);
4264 SET_FLAG(bgp_vrf
->vrf_flags
, BGP_VRF_EXPORT_RT_CFGD
);
4266 bgp_evpn_handle_export_rt_change_for_vrf(bgp_vrf
);
4269 void bgp_evpn_unconfigure_export_rt_for_vrf(struct bgp
*bgp_vrf
,
4270 struct ecommunity
*ecomdel
)
4272 struct listnode
*node
= NULL
, *nnode
= NULL
, *node_to_del
= NULL
;
4273 struct ecommunity
*ecom
= NULL
;
4275 /* Remove the RT from the RT list */
4276 for (ALL_LIST_ELEMENTS(bgp_vrf
->vrf_export_rtl
, node
, nnode
, ecom
)) {
4277 if (ecommunity_match(ecom
, ecomdel
)) {
4278 ecommunity_free(&ecom
);
4285 list_delete_node(bgp_vrf
->vrf_export_rtl
, node_to_del
);
4288 * Temporary assert to make SA happy.
4289 * The ALL_LIST_ELEMENTS macro above has a NULL check
4290 * which means that SA is going to complain about
4291 * the list_isempty call, which doesn't NULL check.
4292 * So until we get this situation cleaned up, here
4295 assert(bgp_vrf
->vrf_export_rtl
);
4297 /* fall back to auto-generated RT if this was the last RT */
4298 if (list_isempty(bgp_vrf
->vrf_export_rtl
)) {
4299 UNSET_FLAG(bgp_vrf
->vrf_flags
, BGP_VRF_EXPORT_RT_CFGD
);
4300 evpn_auto_rt_export_add_for_vrf(bgp_vrf
);
4303 bgp_evpn_handle_export_rt_change_for_vrf(bgp_vrf
);
4307 * Handle change to BGP router id. This is invoked twice by the change
4308 * handler, first before the router id has been changed and then after
4309 * the router id has been changed. The first invocation will result in
4310 * local routes for all VNIs/VRF being deleted and withdrawn and the next
4311 * will result in the routes being re-advertised.
4313 void bgp_evpn_handle_router_id_update(struct bgp
*bgp
, int withdraw
)
4317 /* delete and withdraw all the type-5 routes
4318 stored in the global table for this vrf
4320 withdraw_router_id_vrf(bgp
);
4322 /* delete all the VNI routes (type-2/type-3) routes for all the
4325 hash_iterate(bgp
->vnihash
,
4326 (void (*)(struct hash_backet
*,
4327 void *))withdraw_router_id_vni
,
4331 /* advertise all routes in the vrf as type-5 routes with the new
4334 update_router_id_vrf(bgp
);
4336 /* advertise all the VNI routes (type-2/type-3) routes with the
4339 hash_iterate(bgp
->vnihash
,
4340 (void (*)(struct hash_backet
*,
4341 void *))update_router_id_vni
,
4347 * Handle change to auto-RT algorithm - update and advertise local routes.
4349 void bgp_evpn_handle_autort_change(struct bgp
*bgp
)
4351 hash_iterate(bgp
->vnihash
,
4352 (void (*)(struct hash_backet
*,
4353 void*))update_autort_vni
,
4358 * Handle change to export RT - update and advertise local routes.
4360 int bgp_evpn_handle_export_rt_change(struct bgp
*bgp
, struct bgpevpn
*vpn
)
4362 return update_routes_for_vni(bgp
, vpn
);
4365 void bgp_evpn_handle_vrf_rd_change(struct bgp
*bgp_vrf
, int withdraw
)
4368 delete_withdraw_vrf_routes(bgp_vrf
);
4370 update_advertise_vrf_routes(bgp_vrf
);
4374 * Handle change to RD. This is invoked twice by the change handler,
4375 * first before the RD has been changed and then after the RD has
4376 * been changed. The first invocation will result in local routes
4377 * of this VNI being deleted and withdrawn and the next will result
4378 * in the routes being re-advertised.
4380 void bgp_evpn_handle_rd_change(struct bgp
*bgp
, struct bgpevpn
*vpn
,
4384 delete_withdraw_vni_routes(bgp
, vpn
);
4386 update_advertise_vni_routes(bgp
, vpn
);
4390 * Install routes for this VNI. Invoked upon change to Import RT.
4392 int bgp_evpn_install_routes(struct bgp
*bgp
, struct bgpevpn
*vpn
)
4394 return install_routes_for_vni(bgp
, vpn
);
4398 * Uninstall all routes installed for this VNI. Invoked upon change
4401 int bgp_evpn_uninstall_routes(struct bgp
*bgp
, struct bgpevpn
*vpn
)
4403 return uninstall_routes_for_vni(bgp
, vpn
);
4407 * TODO: Hardcoded for a maximum of 2 VNIs right now
4409 char *bgp_evpn_label2str(mpls_label_t
*label
, uint32_t num_labels
, char *buf
,
4414 vni1
= label2vni(label
);
4415 if (num_labels
== 2) {
4416 vni2
= label2vni(label
+ 1);
4417 snprintf(buf
, len
, "%u/%u", vni1
, vni2
);
4419 snprintf(buf
, len
, "%u", vni1
);
4424 * Function to convert evpn route to json format.
4425 * NOTE: We don't use prefix2str as the output here is a bit different.
4427 void bgp_evpn_route2json(struct prefix_evpn
*p
, json_object
*json
)
4429 char buf1
[ETHER_ADDR_STRLEN
];
4430 char buf2
[PREFIX2STR_BUFFER
];
4435 if (p
->prefix
.route_type
== BGP_EVPN_IMET_ROUTE
) {
4436 json_object_int_add(json
, "routeType", p
->prefix
.route_type
);
4437 json_object_int_add(json
, "ethTag",
4438 p
->prefix
.imet_addr
.eth_tag
);
4439 json_object_int_add(json
, "ipLen",
4440 is_evpn_prefix_ipaddr_v4(p
)
4443 json_object_string_add(json
, "ip",
4444 inet_ntoa(p
->prefix
.imet_addr
.ip
.ipaddr_v4
));
4445 } else if (p
->prefix
.route_type
== BGP_EVPN_MAC_IP_ROUTE
) {
4446 if (is_evpn_prefix_ipaddr_none(p
)) {
4447 json_object_int_add(json
, "routeType",
4448 p
->prefix
.route_type
);
4449 json_object_int_add(json
, "ethTag",
4450 p
->prefix
.macip_addr
.eth_tag
);
4451 json_object_int_add(json
, "macLen", 8 * ETH_ALEN
);
4452 json_object_string_add(json
, "mac",
4453 prefix_mac2str(&p
->prefix
.macip_addr
.mac
,
4459 family
= is_evpn_prefix_ipaddr_v4(p
) ? AF_INET
4462 json_object_int_add(json
, "routeType",
4463 p
->prefix
.route_type
);
4464 json_object_int_add(json
, "ethTag",
4465 p
->prefix
.macip_addr
.eth_tag
);
4466 json_object_int_add(json
, "macLen", 8 * ETH_ALEN
);
4467 json_object_string_add(json
, "mac",
4468 prefix_mac2str(&p
->prefix
.macip_addr
.mac
,
4471 json_object_int_add(json
, "ipLen",
4472 is_evpn_prefix_ipaddr_v4(p
)
4475 json_object_string_add(
4478 &p
->prefix
.macip_addr
.ip
.ip
.addr
,
4480 PREFIX2STR_BUFFER
));
4483 /* Currently, this is to cater to other AF_ETHERNET code. */
4488 * Function to convert evpn route to string.
4489 * NOTE: We don't use prefix2str as the output here is a bit different.
4491 char *bgp_evpn_route2str(struct prefix_evpn
*p
, char *buf
, int len
)
4493 char buf1
[ETHER_ADDR_STRLEN
];
4494 char buf2
[PREFIX2STR_BUFFER
];
4495 char buf3
[ESI_STR_LEN
];
4497 if (p
->prefix
.route_type
== BGP_EVPN_IMET_ROUTE
) {
4498 snprintf(buf
, len
, "[%d]:[%d]:[%d]:[%s]", p
->prefix
.route_type
,
4499 p
->prefix
.imet_addr
.eth_tag
,
4500 is_evpn_prefix_ipaddr_v4(p
) ? IPV4_MAX_BITLEN
4502 inet_ntoa(p
->prefix
.imet_addr
.ip
.ipaddr_v4
));
4503 } else if (p
->prefix
.route_type
== BGP_EVPN_MAC_IP_ROUTE
) {
4504 if (is_evpn_prefix_ipaddr_none(p
))
4505 snprintf(buf
, len
, "[%d]:[%d]:[%d]:[%s]",
4506 p
->prefix
.route_type
,
4507 p
->prefix
.macip_addr
.eth_tag
,
4509 prefix_mac2str(&p
->prefix
.macip_addr
.mac
, buf1
,
4514 family
= is_evpn_prefix_ipaddr_v4(p
) ? AF_INET
4516 snprintf(buf
, len
, "[%d]:[%d]:[%d]:[%s]:[%d]:[%s]",
4517 p
->prefix
.route_type
,
4518 p
->prefix
.macip_addr
.eth_tag
,
4520 prefix_mac2str(&p
->prefix
.macip_addr
.mac
, buf1
,
4522 family
== AF_INET
? IPV4_MAX_BITLEN
4525 &p
->prefix
.macip_addr
.ip
.ip
.addr
,
4527 PREFIX2STR_BUFFER
));
4529 } else if (p
->prefix
.route_type
== BGP_EVPN_IP_PREFIX_ROUTE
) {
4530 snprintf(buf
, len
, "[%d]:[%d]:[%d]:[%s]",
4531 p
->prefix
.route_type
,
4532 p
->prefix
.prefix_addr
.eth_tag
,
4533 p
->prefix
.prefix_addr
.ip_prefix_length
,
4534 is_evpn_prefix_ipaddr_v4(p
)
4535 ? inet_ntoa(p
->prefix
.prefix_addr
.ip
.ipaddr_v4
)
4536 : inet6_ntoa(p
->prefix
.prefix_addr
.ip
.ipaddr_v6
));
4537 } else if (p
->prefix
.route_type
== BGP_EVPN_ES_ROUTE
) {
4538 snprintf(buf
, len
, "[%d]:[%s]:[%d]:[%s]",
4539 p
->prefix
.route_type
,
4540 esi_to_str(&p
->prefix
.es_addr
.esi
, buf3
, sizeof(buf3
)),
4541 is_evpn_prefix_ipaddr_v4(p
) ? IPV4_MAX_BITLEN
4543 inet_ntoa(p
->prefix
.es_addr
.ip
.ipaddr_v4
));
4545 /* For EVPN route types not supported yet. */
4546 snprintf(buf
, len
, "(unsupported route type %d)",
4547 p
->prefix
.route_type
);
4554 * Encode EVPN prefix in Update (MP_REACH)
4556 void bgp_evpn_encode_prefix(struct stream
*s
, struct prefix
*p
,
4557 struct prefix_rd
*prd
, mpls_label_t
*label
,
4558 uint32_t num_labels
, struct attr
*attr
,
4559 int addpath_encode
, uint32_t addpath_tx_id
)
4561 struct prefix_evpn
*evp
= (struct prefix_evpn
*)p
;
4562 int len
, ipa_len
= 0;
4565 stream_putl(s
, addpath_tx_id
);
4568 stream_putc(s
, evp
->prefix
.route_type
);
4570 switch (evp
->prefix
.route_type
) {
4571 case BGP_EVPN_MAC_IP_ROUTE
:
4572 if (is_evpn_prefix_ipaddr_v4(evp
))
4573 ipa_len
= IPV4_MAX_BYTELEN
;
4574 else if (is_evpn_prefix_ipaddr_v6(evp
))
4575 ipa_len
= IPV6_MAX_BYTELEN
;
4576 /* RD, ESI, EthTag, MAC+len, IP len, [IP], 1 VNI */
4577 len
= 8 + 10 + 4 + 1 + 6 + 1 + ipa_len
+ 3;
4578 if (ipa_len
&& num_labels
> 1) /* There are 2 VNIs */
4580 stream_putc(s
, len
);
4581 stream_put(s
, prd
->val
, 8); /* RD */
4583 stream_put(s
, &attr
->evpn_overlay
.eth_s_id
, ESI_LEN
);
4585 stream_put(s
, 0, 10);
4586 stream_putl(s
, evp
->prefix
.macip_addr
.eth_tag
); /* Ethernet Tag ID */
4587 stream_putc(s
, 8 * ETH_ALEN
); /* Mac Addr Len - bits */
4588 stream_put(s
, evp
->prefix
.macip_addr
.mac
.octet
, 6); /* Mac Addr */
4589 stream_putc(s
, 8 * ipa_len
); /* IP address Length */
4590 if (ipa_len
) /* IP */
4591 stream_put(s
, &evp
->prefix
.macip_addr
.ip
.ip
.addr
,
4593 /* 1st label is the L2 VNI */
4594 stream_put(s
, label
, BGP_LABEL_BYTES
);
4595 /* Include 2nd label (L3 VNI) if advertising MAC+IP */
4596 if (ipa_len
&& num_labels
> 1)
4597 stream_put(s
, label
+ 1, BGP_LABEL_BYTES
);
4600 case BGP_EVPN_IMET_ROUTE
:
4601 stream_putc(s
, 17); // TODO: length - assumes IPv4 address
4602 stream_put(s
, prd
->val
, 8); /* RD */
4603 stream_putl(s
, evp
->prefix
.imet_addr
.eth_tag
); /* Ethernet Tag ID */
4604 stream_putc(s
, IPV4_MAX_BITLEN
); /* IP address Length - bits */
4605 /* Originating Router's IP Addr */
4606 stream_put_in_addr(s
, &evp
->prefix
.imet_addr
.ip
.ipaddr_v4
);
4609 case BGP_EVPN_ES_ROUTE
:
4610 stream_putc(s
, 23); /* TODO: length: assumes ipv4 VTEP */
4611 stream_put(s
, prd
->val
, 8); /* RD */
4612 stream_put(s
, evp
->prefix
.es_addr
.esi
.val
, 10); /* ESI */
4613 stream_putc(s
, IPV4_MAX_BITLEN
); /* IP address Length - bits */
4615 stream_put_in_addr(s
, &evp
->prefix
.es_addr
.ip
.ipaddr_v4
);
4618 case BGP_EVPN_IP_PREFIX_ROUTE
:
4619 /* TODO: AddPath support. */
4620 evpn_mpattr_encode_type5(s
, p
, prd
, label
, num_labels
, attr
);
4628 int bgp_nlri_parse_evpn(struct peer
*peer
, struct attr
*attr
,
4629 struct bgp_nlri
*packet
, int withdraw
)
4635 uint32_t addpath_id
;
4636 int addpath_encoded
;
4641 /* Start processing the NLRI - there may be multiple in the MP_REACH */
4643 lim
= pnt
+ packet
->length
;
4645 safi
= packet
->safi
;
4649 (CHECK_FLAG(peer
->af_cap
[afi
][safi
], PEER_CAP_ADDPATH_AF_RX_ADV
)
4650 && CHECK_FLAG(peer
->af_cap
[afi
][safi
],
4651 PEER_CAP_ADDPATH_AF_TX_RCV
));
4653 for (; pnt
< lim
; pnt
+= psize
) {
4654 /* Clear prefix structure. */
4655 memset(&p
, 0, sizeof(struct prefix
));
4657 /* Deal with path-id if AddPath is supported. */
4658 if (addpath_encoded
) {
4659 /* When packet overflow occurs return immediately. */
4660 if (pnt
+ BGP_ADDPATH_ID_LEN
> lim
)
4663 addpath_id
= ntohl(*((uint32_t *)pnt
));
4664 pnt
+= BGP_ADDPATH_ID_LEN
;
4667 /* All EVPN NLRI types start with type and length. */
4674 /* When packet overflow occur return immediately. */
4675 if (pnt
+ psize
> lim
)
4679 case BGP_EVPN_MAC_IP_ROUTE
:
4680 if (process_type2_route(peer
, afi
, safi
,
4681 withdraw
? NULL
: attr
, pnt
,
4682 psize
, addpath_id
)) {
4685 "%u:%s - Error in processing EVPN type-2 NLRI size %d",
4686 peer
->bgp
->vrf_id
, peer
->host
, psize
);
4691 case BGP_EVPN_IMET_ROUTE
:
4692 if (process_type3_route(peer
, afi
, safi
,
4693 withdraw
? NULL
: attr
, pnt
,
4694 psize
, addpath_id
)) {
4696 BGP_ERR_PKT_PROCESS
,
4697 "%u:%s - Error in processing EVPN type-3 NLRI size %d",
4698 peer
->bgp
->vrf_id
, peer
->host
, psize
);
4703 case BGP_EVPN_ES_ROUTE
:
4704 if (process_type4_route(peer
, afi
, safi
,
4705 withdraw
? NULL
: attr
, pnt
,
4706 psize
, addpath_id
)) {
4708 BGP_ERR_PKT_PROCESS
,
4709 "%u:%s - Error in processing EVPN type-4 NLRI size %d",
4710 peer
->bgp
->vrf_id
, peer
->host
, psize
);
4715 case BGP_EVPN_IP_PREFIX_ROUTE
:
4716 if (process_type5_route(peer
, afi
, safi
, attr
, pnt
,
4717 psize
, addpath_id
, withdraw
)) {
4719 BGP_ERR_PKT_PROCESS
,
4720 "%u:%s - Error in processing EVPN type-5 NLRI size %d",
4721 peer
->bgp
->vrf_id
, peer
->host
, psize
);
4731 /* Packet length consistency check. */
4739 * Map the RTs (configured or automatically derived) of a VRF to the VRF.
4740 * The mapping will be used during route processing.
4741 * bgp_def: default bgp instance
4742 * bgp_vrf: specific bgp vrf instance on which RT is configured
4744 void bgp_evpn_map_vrf_to_its_rts(struct bgp
*bgp_vrf
)
4747 struct ecommunity_val
*eval
= NULL
;
4748 struct listnode
*node
= NULL
, *nnode
= NULL
;
4749 struct ecommunity
*ecom
= NULL
;
4751 for (ALL_LIST_ELEMENTS(bgp_vrf
->vrf_import_rtl
, node
, nnode
, ecom
)) {
4752 for (i
= 0; i
< ecom
->size
; i
++) {
4753 eval
= (struct ecommunity_val
*)(ecom
->val
4755 * ECOMMUNITY_SIZE
));
4756 map_vrf_to_rt(bgp_vrf
, eval
);
4762 * Unmap the RTs (configured or automatically derived) of a VRF from the VRF.
4764 void bgp_evpn_unmap_vrf_from_its_rts(struct bgp
*bgp_vrf
)
4767 struct ecommunity_val
*eval
;
4768 struct listnode
*node
, *nnode
;
4769 struct ecommunity
*ecom
;
4771 for (ALL_LIST_ELEMENTS(bgp_vrf
->vrf_import_rtl
, node
, nnode
, ecom
)) {
4772 for (i
= 0; i
< ecom
->size
; i
++) {
4773 struct vrf_irt_node
*irt
;
4774 struct ecommunity_val eval_tmp
;
4776 eval
= (struct ecommunity_val
*)(ecom
->val
4778 * ECOMMUNITY_SIZE
));
4779 /* If using "automatic" RT, we only care about the
4780 * local-admin sub-field.
4781 * This is to facilitate using VNI as the RT for EBGP
4784 memcpy(&eval_tmp
, eval
, ECOMMUNITY_SIZE
);
4785 if (!CHECK_FLAG(bgp_vrf
->vrf_flags
,
4786 BGP_VRF_IMPORT_RT_CFGD
))
4787 mask_ecom_global_admin(&eval_tmp
, eval
);
4789 irt
= lookup_vrf_import_rt(&eval_tmp
);
4791 unmap_vrf_from_rt(bgp_vrf
, irt
);
4798 * Map the RTs (configured or automatically derived) of a VNI to the VNI.
4799 * The mapping will be used during route processing.
4801 void bgp_evpn_map_vni_to_its_rts(struct bgp
*bgp
, struct bgpevpn
*vpn
)
4804 struct ecommunity_val
*eval
;
4805 struct listnode
*node
, *nnode
;
4806 struct ecommunity
*ecom
;
4808 for (ALL_LIST_ELEMENTS(vpn
->import_rtl
, node
, nnode
, ecom
)) {
4809 for (i
= 0; i
< ecom
->size
; i
++) {
4810 eval
= (struct ecommunity_val
*)(ecom
->val
4812 * ECOMMUNITY_SIZE
));
4813 map_vni_to_rt(bgp
, vpn
, eval
);
4819 * Unmap the RTs (configured or automatically derived) of a VNI from the VNI.
4821 void bgp_evpn_unmap_vni_from_its_rts(struct bgp
*bgp
, struct bgpevpn
*vpn
)
4824 struct ecommunity_val
*eval
;
4825 struct listnode
*node
, *nnode
;
4826 struct ecommunity
*ecom
;
4828 for (ALL_LIST_ELEMENTS(vpn
->import_rtl
, node
, nnode
, ecom
)) {
4829 for (i
= 0; i
< ecom
->size
; i
++) {
4830 struct irt_node
*irt
;
4831 struct ecommunity_val eval_tmp
;
4833 eval
= (struct ecommunity_val
*)(ecom
->val
4835 * ECOMMUNITY_SIZE
));
4836 /* If using "automatic" RT, we only care about the
4837 * local-admin sub-field.
4838 * This is to facilitate using VNI as the RT for EBGP
4841 memcpy(&eval_tmp
, eval
, ECOMMUNITY_SIZE
);
4842 if (!is_import_rt_configured(vpn
))
4843 mask_ecom_global_admin(&eval_tmp
, eval
);
4845 irt
= lookup_import_rt(bgp
, &eval_tmp
);
4847 unmap_vni_from_rt(bgp
, vpn
, irt
);
4853 * Derive Import RT automatically for VNI and map VNI to RT.
4854 * The mapping will be used during route processing.
4856 void bgp_evpn_derive_auto_rt_import(struct bgp
*bgp
, struct bgpevpn
*vpn
)
4858 form_auto_rt(bgp
, vpn
->vni
, vpn
->import_rtl
);
4859 UNSET_FLAG(vpn
->flags
, VNI_FLAG_IMPRT_CFGD
);
4862 bgp_evpn_map_vni_to_its_rts(bgp
, vpn
);
4866 * Derive Export RT automatically for VNI.
4868 void bgp_evpn_derive_auto_rt_export(struct bgp
*bgp
, struct bgpevpn
*vpn
)
4870 form_auto_rt(bgp
, vpn
->vni
, vpn
->export_rtl
);
4871 UNSET_FLAG(vpn
->flags
, VNI_FLAG_EXPRT_CFGD
);
4875 * Derive RD automatically for VNI using passed information - it
4876 * is of the form RouterId:unique-id-for-vni.
4878 void bgp_evpn_derive_auto_rd_for_vrf(struct bgp
*bgp
)
4880 form_auto_rd(bgp
->router_id
, bgp
->vrf_rd_id
, &bgp
->vrf_prd
);
4884 * Derive RD automatically for VNI using passed information - it
4885 * is of the form RouterId:unique-id-for-vni.
4887 void bgp_evpn_derive_auto_rd(struct bgp
*bgp
, struct bgpevpn
*vpn
)
4891 vpn
->prd
.family
= AF_UNSPEC
;
4892 vpn
->prd
.prefixlen
= 64;
4893 sprintf(buf
, "%s:%hu", inet_ntoa(bgp
->router_id
), vpn
->rd_id
);
4894 (void)str2prefix_rd(buf
, &vpn
->prd
);
4895 UNSET_FLAG(vpn
->flags
, VNI_FLAG_RD_CFGD
);
4901 struct bgpevpn
*bgp_evpn_lookup_vni(struct bgp
*bgp
, vni_t vni
)
4903 struct bgpevpn
*vpn
;
4906 memset(&tmp
, 0, sizeof(struct bgpevpn
));
4908 vpn
= hash_lookup(bgp
->vnihash
, &tmp
);
4913 * Create a new vpn - invoked upon configuration or zebra notification.
4915 struct bgpevpn
*bgp_evpn_new(struct bgp
*bgp
, vni_t vni
,
4916 struct in_addr originator_ip
,
4917 vrf_id_t tenant_vrf_id
)
4919 struct bgpevpn
*vpn
;
4924 vpn
= XCALLOC(MTYPE_BGP_EVPN
, sizeof(struct bgpevpn
));
4928 /* Set values - RD and RT set to defaults. */
4930 vpn
->originator_ip
= originator_ip
;
4931 vpn
->tenant_vrf_id
= tenant_vrf_id
;
4933 /* Initialize route-target import and export lists */
4934 vpn
->import_rtl
= list_new();
4935 vpn
->import_rtl
->cmp
= (int (*)(void *, void *))evpn_route_target_cmp
;
4936 vpn
->import_rtl
->del
= evpn_xxport_delete_ecomm
;
4937 vpn
->export_rtl
= list_new();
4938 vpn
->export_rtl
->cmp
= (int (*)(void *, void *))evpn_route_target_cmp
;
4939 vpn
->export_rtl
->del
= evpn_xxport_delete_ecomm
;
4940 bf_assign_index(bm
->rd_idspace
, vpn
->rd_id
);
4941 derive_rd_rt_for_vni(bgp
, vpn
);
4943 /* Initialize EVPN route table. */
4944 vpn
->route_table
= bgp_table_init(bgp
, AFI_L2VPN
, SAFI_EVPN
);
4947 if (!hash_get(bgp
->vnihash
, vpn
, hash_alloc_intern
)) {
4948 XFREE(MTYPE_BGP_EVPN
, vpn
);
4952 /* add to l2vni list on corresponding vrf */
4953 bgpevpn_link_to_l3vni(vpn
);
4955 QOBJ_REG(vpn
, bgpevpn
);
4960 * Free a given VPN - called in multiple scenarios such as zebra
4961 * notification, configuration being deleted, advertise-all-vni disabled etc.
4962 * This just frees appropriate memory, caller should have taken other
4965 void bgp_evpn_free(struct bgp
*bgp
, struct bgpevpn
*vpn
)
4967 bgpevpn_unlink_from_l3vni(vpn
);
4968 bgp_table_unlock(vpn
->route_table
);
4969 bgp_evpn_unmap_vni_from_its_rts(bgp
, vpn
);
4970 list_delete_and_null(&vpn
->import_rtl
);
4971 list_delete_and_null(&vpn
->export_rtl
);
4972 bf_release_index(bm
->rd_idspace
, vpn
->rd_id
);
4973 hash_release(bgp
->vnihash
, vpn
);
4975 XFREE(MTYPE_BGP_EVPN
, vpn
);
4981 struct evpnes
*bgp_evpn_lookup_es(struct bgp
*bgp
, esi_t
*esi
)
4986 memset(&tmp
, 0, sizeof(struct evpnes
));
4987 memcpy(&tmp
.esi
, esi
, sizeof(esi_t
));
4988 es
= hash_lookup(bgp
->esihash
, &tmp
);
4993 * Create a new local es - invoked upon zebra notification.
4995 struct evpnes
*bgp_evpn_es_new(struct bgp
*bgp
,
4997 struct ipaddr
*originator_ip
)
5005 es
= XCALLOC(MTYPE_BGP_EVPN_ES
, sizeof(struct evpnes
));
5009 /* set the ESI and originator_ip */
5010 memcpy(&es
->esi
, esi
, sizeof(esi_t
));
5011 memcpy(&es
->originator_ip
, originator_ip
, sizeof(struct ipaddr
));
5013 /* Initialise the VTEP list */
5014 es
->vtep_list
= list_new();
5015 es
->vtep_list
->cmp
= (int (*)(void *, void *))evpn_vtep_ip_cmp
;
5017 /* auto derive RD for this es */
5018 bf_assign_index(bm
->rd_idspace
, es
->rd_id
);
5019 es
->prd
.family
= AF_UNSPEC
;
5020 es
->prd
.prefixlen
= 64;
5021 sprintf(buf
, "%s:%hu", inet_ntoa(bgp
->router_id
), es
->rd_id
);
5022 (void)str2prefix_rd(buf
, &es
->prd
);
5024 /* Initialize the ES route table */
5025 es
->route_table
= bgp_table_init(bgp
, AFI_L2VPN
, SAFI_EVPN
);
5028 if (!hash_get(bgp
->esihash
, es
, hash_alloc_intern
)) {
5029 XFREE(MTYPE_BGP_EVPN_ES
, es
);
5033 QOBJ_REG(es
, evpnes
);
5039 * This just frees appropriate memory, caller should have taken other
5042 void bgp_evpn_es_free(struct bgp
*bgp
, struct evpnes
*es
)
5044 list_delete_and_null(&es
->vtep_list
);
5045 bgp_table_unlock(es
->route_table
);
5046 bf_release_index(bm
->rd_idspace
, es
->rd_id
);
5047 hash_release(bgp
->esihash
, es
);
5049 XFREE(MTYPE_BGP_EVPN_ES
, es
);
5053 * Import evpn route from global table to VNI/VRF/ESI.
5055 int bgp_evpn_import_route(struct bgp
*bgp
, afi_t afi
, safi_t safi
,
5056 struct prefix
*p
, struct bgp_info
*ri
)
5058 return install_uninstall_evpn_route(bgp
, afi
, safi
, p
, ri
, 1);
5062 * Unimport evpn route from VNI/VRF/ESI.
5064 int bgp_evpn_unimport_route(struct bgp
*bgp
, afi_t afi
, safi_t safi
,
5065 struct prefix
*p
, struct bgp_info
*ri
)
5067 return install_uninstall_evpn_route(bgp
, afi
, safi
, p
, ri
, 0);
5070 /* filter routes which have martian next hops */
5071 int bgp_filter_evpn_routes_upon_martian_nh_change(struct bgp
*bgp
)
5075 struct bgp_node
*rd_rn
, *rn
;
5076 struct bgp_table
*table
;
5077 struct bgp_info
*ri
;
5082 /* Walk entire global routing table and evaluate routes which could be
5083 * imported into this VPN. Note that we cannot just look at the routes
5084 * for the VNI's RD -
5085 * remote routes applicable for this VNI could have any RD.
5087 /* EVPN routes are a 2-level table. */
5088 for (rd_rn
= bgp_table_top(bgp
->rib
[afi
][safi
]); rd_rn
;
5089 rd_rn
= bgp_route_next(rd_rn
)) {
5090 table
= (struct bgp_table
*)(rd_rn
->info
);
5094 for (rn
= bgp_table_top(table
); rn
; rn
= bgp_route_next(rn
)) {
5096 for (ri
= rn
->info
; ri
; ri
= ri
->next
) {
5098 /* Consider "valid" remote routes applicable for
5100 if (!(ri
->type
== ZEBRA_ROUTE_BGP
5101 && ri
->sub_type
== BGP_ROUTE_NORMAL
))
5104 if (bgp_nexthop_self(bgp
, ri
->attr
->nexthop
)) {
5106 char attr_str
[BUFSIZ
];
5107 char pbuf
[PREFIX_STRLEN
];
5109 bgp_dump_attr(ri
->attr
, attr_str
,
5112 if (bgp_debug_update(ri
->peer
, &rn
->p
,
5115 "%u: prefix %s with attr %s - DENIED due to martian or self nexthop",
5122 bgp_evpn_unimport_route(bgp
, afi
, safi
,
5125 bgp_rib_remove(rn
, ri
, ri
->peer
, afi
,
5136 * Handle del of a local MACIP.
5138 int bgp_evpn_local_macip_del(struct bgp
*bgp
, vni_t vni
, struct ethaddr
*mac
,
5141 struct bgpevpn
*vpn
;
5142 struct prefix_evpn p
;
5144 /* Lookup VNI hash - should exist. */
5145 vpn
= bgp_evpn_lookup_vni(bgp
, vni
);
5146 if (!vpn
|| !is_vni_live(vpn
)) {
5147 zlog_warn("%u: VNI hash entry for VNI %u %s at MACIP DEL",
5148 bgp
->vrf_id
, vni
, vpn
? "not live" : "not found");
5152 /* Remove EVPN type-2 route and schedule for processing. */
5153 build_evpn_type2_prefix(&p
, mac
, ip
);
5154 delete_evpn_route(bgp
, vpn
, &p
);
5160 * Handle add of a local MACIP.
5162 int bgp_evpn_local_macip_add(struct bgp
*bgp
, vni_t vni
, struct ethaddr
*mac
,
5163 struct ipaddr
*ip
, uint8_t flags
, uint32_t seq
)
5165 struct bgpevpn
*vpn
;
5166 struct prefix_evpn p
;
5168 /* Lookup VNI hash - should exist. */
5169 vpn
= bgp_evpn_lookup_vni(bgp
, vni
);
5170 if (!vpn
|| !is_vni_live(vpn
)) {
5171 zlog_warn("%u: VNI hash entry for VNI %u %s at MACIP ADD",
5172 bgp
->vrf_id
, vni
, vpn
? "not live" : "not found");
5176 /* Create EVPN type-2 route and schedule for processing. */
5177 build_evpn_type2_prefix(&p
, mac
, ip
);
5178 if (update_evpn_route(bgp
, vpn
, &p
, flags
, seq
)) {
5179 char buf
[ETHER_ADDR_STRLEN
];
5180 char buf2
[INET6_ADDRSTRLEN
];
5183 BGP_ERR_EVPN_ROUTE_CREATE
,
5184 "%u:Failed to create Type-2 route, VNI %u %s MAC %s IP %s (flags: 0x%x)",
5185 bgp
->vrf_id
, vpn
->vni
,
5186 CHECK_FLAG(flags
, ZEBRA_MACIP_TYPE_STICKY
)
5189 prefix_mac2str(mac
, buf
, sizeof(buf
)),
5190 ipaddr2str(ip
, buf2
, sizeof(buf2
)), flags
);
5197 static void link_l2vni_hash_to_l3vni(struct hash_backet
*backet
,
5198 struct bgp
*bgp_vrf
)
5200 struct bgpevpn
*vpn
= (struct bgpevpn
*)backet
->data
;
5201 struct bgp
*bgp_def
= NULL
;
5203 bgp_def
= bgp_get_default();
5206 if (vpn
->tenant_vrf_id
== bgp_vrf
->vrf_id
)
5207 bgpevpn_link_to_l3vni(vpn
);
5210 int bgp_evpn_local_l3vni_add(vni_t l3vni
, vrf_id_t vrf_id
, struct ethaddr
*rmac
,
5211 struct in_addr originator_ip
, int filter
)
5213 struct bgp
*bgp_vrf
= NULL
; /* bgp VRF instance */
5214 struct bgp
*bgp_def
= NULL
; /* default bgp instance */
5215 struct listnode
*node
= NULL
;
5216 struct bgpevpn
*vpn
= NULL
;
5219 /* get the default instance - required to get the AS number for VRF
5222 bgp_def
= bgp_get_default();
5226 "Cannot process L3VNI %u ADD - default BGP instance not yet created",
5232 /* if the BGP vrf instance doesnt exist - create one */
5233 bgp_vrf
= bgp_lookup_by_name(vrf_id_to_name(vrf_id
));
5238 ret
= bgp_get(&bgp_vrf
, &as
, vrf_id_to_name(vrf_id
),
5239 BGP_INSTANCE_TYPE_VRF
);
5241 case BGP_ERR_MULTIPLE_INSTANCE_NOT_SET
:
5242 flog_err(BGP_ERR_MULTI_INSTANCE
,
5243 "'bgp multiple-instance' not present\n");
5245 case BGP_ERR_AS_MISMATCH
:
5246 flog_err(BGP_ERR_EVPN_AS_MISMATCH
,
5247 "BGP is already running; AS is %u\n", as
);
5249 case BGP_ERR_INSTANCE_MISMATCH
:
5250 flog_err(BGP_ERR_EVPN_INSTANCE_MISMATCH
,
5251 "BGP instance name and AS number mismatch\n");
5255 /* mark as auto created */
5256 SET_FLAG(bgp_vrf
->vrf_flags
, BGP_VRF_AUTO
);
5259 /* associate with l3vni */
5260 bgp_vrf
->l3vni
= l3vni
;
5262 /* set the router mac - to be used in mac-ip routes for this vrf */
5263 memcpy(&bgp_vrf
->rmac
, rmac
, sizeof(struct ethaddr
));
5265 /* set the originator ip */
5266 bgp_vrf
->originator_ip
= originator_ip
;
5268 /* set the right filter - are we using l3vni only for prefix routes? */
5270 SET_FLAG(bgp_vrf
->vrf_flags
, BGP_VRF_L3VNI_PREFIX_ROUTES_ONLY
);
5272 /* auto derive RD/RT */
5273 if (!CHECK_FLAG(bgp_vrf
->vrf_flags
, BGP_VRF_IMPORT_RT_CFGD
))
5274 evpn_auto_rt_import_add_for_vrf(bgp_vrf
);
5275 if (!CHECK_FLAG(bgp_vrf
->vrf_flags
, BGP_VRF_EXPORT_RT_CFGD
))
5276 evpn_auto_rt_export_add_for_vrf(bgp_vrf
);
5277 bgp_evpn_derive_auto_rd_for_vrf(bgp_vrf
);
5279 /* link all corresponding l2vnis */
5280 hash_iterate(bgp_def
->vnihash
,
5281 (void (*)(struct hash_backet
*,
5282 void *))link_l2vni_hash_to_l3vni
,
5285 /* Only update all corresponding type-2 routes if we are advertising two
5286 * labels along with type-2 routes
5289 for (ALL_LIST_ELEMENTS_RO(bgp_vrf
->l2vnis
, node
, vpn
))
5290 update_routes_for_vni(bgp_def
, vpn
);
5292 /* advertise type-5 routes if needed */
5293 update_advertise_vrf_routes(bgp_vrf
);
5295 /* install all remote routes belonging to this l3vni into correspondng
5297 install_routes_for_vrf(bgp_vrf
);
5302 int bgp_evpn_local_l3vni_del(vni_t l3vni
, vrf_id_t vrf_id
)
5304 struct bgp
*bgp_vrf
= NULL
; /* bgp vrf instance */
5305 struct bgp
*bgp_def
= NULL
; /* default bgp instance */
5306 struct listnode
*node
= NULL
;
5307 struct listnode
*next
= NULL
;
5308 struct bgpevpn
*vpn
= NULL
;
5310 bgp_vrf
= bgp_lookup_by_vrf_id(vrf_id
);
5314 "Cannot process L3VNI %u Del - Could not find BGP instance",
5319 bgp_def
= bgp_get_default();
5323 "Cannot process L3VNI %u Del - Could not find default BGP instance",
5328 /* Remove remote routes from BGT VRF even if BGP_VRF_AUTO is configured,
5329 * bgp_delete would not remove/decrement bgp_info of the ip_prefix
5330 * routes. This will uninstalling the routes from zebra and decremnt the
5333 uninstall_routes_for_vrf(bgp_vrf
);
5335 /* delete/withdraw all type-5 routes */
5336 delete_withdraw_vrf_routes(bgp_vrf
);
5338 /* remove the l3vni from vrf instance */
5341 /* remove the Rmac from the BGP vrf */
5342 memset(&bgp_vrf
->rmac
, 0, sizeof(struct ethaddr
));
5345 if (!list_isempty(bgp_vrf
->vrf_import_rtl
)) {
5346 bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf
);
5347 list_delete_all_node(bgp_vrf
->vrf_import_rtl
);
5349 if (!list_isempty(bgp_vrf
->vrf_export_rtl
)) {
5350 list_delete_all_node(bgp_vrf
->vrf_export_rtl
);
5353 /* update all corresponding local mac-ip routes */
5354 if (!CHECK_FLAG(bgp_vrf
->vrf_flags
, BGP_VRF_L3VNI_PREFIX_ROUTES_ONLY
)) {
5355 for (ALL_LIST_ELEMENTS_RO(bgp_vrf
->l2vnis
, node
, vpn
)) {
5356 UNSET_FLAG(vpn
->flags
, VNI_FLAG_USE_TWO_LABELS
);
5357 update_routes_for_vni(bgp_def
, vpn
);
5361 /* If any L2VNIs point to this instance, unlink them. */
5362 for (ALL_LIST_ELEMENTS(bgp_vrf
->l2vnis
, node
, next
, vpn
))
5363 bgpevpn_unlink_from_l3vni(vpn
);
5365 /* Delete the instance if it was autocreated */
5366 if (CHECK_FLAG(bgp_vrf
->vrf_flags
, BGP_VRF_AUTO
))
5367 bgp_delete(bgp_vrf
);
5373 * Handle del of a local VNI.
5375 int bgp_evpn_local_vni_del(struct bgp
*bgp
, vni_t vni
)
5377 struct bgpevpn
*vpn
;
5379 /* Locate VNI hash */
5380 vpn
= bgp_evpn_lookup_vni(bgp
, vni
);
5382 if (bgp_debug_zebra(NULL
))
5384 "%u: VNI hash entry for VNI %u not found at DEL",
5389 /* Remove all local EVPN routes and schedule for processing (to
5390 * withdraw from peers).
5392 delete_routes_for_vni(bgp
, vpn
);
5395 * tunnel is no longer active, del tunnel ip address from tip_hash
5397 bgp_tip_del(bgp
, &vpn
->originator_ip
);
5399 /* Clear "live" flag and see if hash needs to be freed. */
5400 UNSET_FLAG(vpn
->flags
, VNI_FLAG_LIVE
);
5401 if (!is_vni_configured(vpn
))
5402 bgp_evpn_free(bgp
, vpn
);
5408 * Handle add (or update) of a local VNI. The VNI changes we care
5409 * about are for the local-tunnel-ip and the (tenant) VRF.
5411 int bgp_evpn_local_vni_add(struct bgp
*bgp
, vni_t vni
,
5412 struct in_addr originator_ip
, vrf_id_t tenant_vrf_id
)
5414 struct bgpevpn
*vpn
;
5415 struct prefix_evpn p
;
5417 /* Lookup VNI. If present and no change, exit. */
5418 vpn
= bgp_evpn_lookup_vni(bgp
, vni
);
5421 if (is_vni_live(vpn
)
5422 && IPV4_ADDR_SAME(&vpn
->originator_ip
, &originator_ip
)
5423 && vpn
->tenant_vrf_id
== tenant_vrf_id
)
5424 /* Probably some other param has changed that we don't
5428 /* Update tenant_vrf_id if it has changed. */
5429 if (vpn
->tenant_vrf_id
!= tenant_vrf_id
) {
5430 bgpevpn_unlink_from_l3vni(vpn
);
5431 vpn
->tenant_vrf_id
= tenant_vrf_id
;
5432 bgpevpn_link_to_l3vni(vpn
);
5435 /* If tunnel endpoint IP has changed, update (and delete prior
5436 * type-3 route, if needed.)
5438 if (!IPV4_ADDR_SAME(&vpn
->originator_ip
, &originator_ip
))
5439 handle_tunnel_ip_change(bgp
, vpn
, originator_ip
);
5441 /* Update all routes with new endpoint IP and/or export RT
5444 if (is_vni_live(vpn
))
5445 update_routes_for_vni(bgp
, vpn
);
5448 /* Create or update as appropriate. */
5450 vpn
= bgp_evpn_new(bgp
, vni
, originator_ip
, tenant_vrf_id
);
5454 "%u: Failed to allocate VNI entry for VNI %u - at Add",
5460 /* if the VNI is live already, there is nothing more to do */
5461 if (is_vni_live(vpn
))
5464 /* Mark as "live" */
5465 SET_FLAG(vpn
->flags
, VNI_FLAG_LIVE
);
5467 /* tunnel is now active, add tunnel-ip to db */
5468 bgp_tip_add(bgp
, &originator_ip
);
5470 /* filter routes as nexthop database has changed */
5471 bgp_filter_evpn_routes_upon_martian_nh_change(bgp
);
5473 /* Create EVPN type-3 route and schedule for processing. */
5474 build_evpn_type3_prefix(&p
, vpn
->originator_ip
);
5475 if (update_evpn_route(bgp
, vpn
, &p
, 0, 0)) {
5476 flog_err(BGP_ERR_EVPN_ROUTE_CREATE
,
5477 "%u: Type3 route creation failure for VNI %u",
5482 /* If we have learnt and retained remote routes (VTEPs, MACs) for this
5486 install_routes_for_vni(bgp
, vpn
);
5488 /* If we are advertising gateway mac-ip
5489 It needs to be conveyed again to zebra */
5490 bgp_zebra_advertise_gw_macip(bgp
, vpn
->advertise_gw_macip
, vpn
->vni
);
5496 * bgp_evpn_local_es_del
5498 int bgp_evpn_local_es_del(struct bgp
*bgp
,
5500 struct ipaddr
*originator_ip
)
5502 char buf
[ESI_STR_LEN
];
5503 struct evpnes
*es
= NULL
;
5505 if (!bgp
->esihash
) {
5506 flog_err(BGP_ERR_ES_CREATE
, "%u: ESI hash not yet created",
5511 /* Lookup ESI hash - should exist. */
5512 es
= bgp_evpn_lookup_es(bgp
, esi
);
5514 zlog_warn("%u: ESI hash entry for ESI %s at Local ES DEL",
5516 esi_to_str(esi
, buf
, sizeof(buf
)));
5520 /* Delete all local EVPN ES routes from ESI table
5521 * and schedule for processing (to withdraw from peers))
5523 delete_routes_for_es(bgp
, es
);
5525 /* free the hash entry */
5526 bgp_evpn_es_free(bgp
, es
);
5532 * bgp_evpn_local_es_add
5534 int bgp_evpn_local_es_add(struct bgp
*bgp
,
5536 struct ipaddr
*originator_ip
)
5538 char buf
[ESI_STR_LEN
];
5539 struct evpnes
*es
= NULL
;
5540 struct prefix_evpn p
;
5542 if (!bgp
->esihash
) {
5543 flog_err(BGP_ERR_ES_CREATE
, "%u: ESI hash not yet created",
5548 /* create the new es */
5549 es
= bgp_evpn_lookup_es(bgp
, esi
);
5551 es
= bgp_evpn_es_new(bgp
, esi
, originator_ip
);
5555 "%u: Failed to allocate ES entry for ESI %s - at Local ES Add",
5556 bgp
->vrf_id
, esi_to_str(esi
, buf
, sizeof(buf
)));
5560 UNSET_FLAG(es
->flags
, EVPNES_REMOTE
);
5561 SET_FLAG(es
->flags
, EVPNES_LOCAL
);
5563 build_evpn_type4_prefix(&p
, esi
, originator_ip
->ipaddr_v4
);
5564 if (update_evpn_type4_route(bgp
, es
, &p
)) {
5565 flog_err(BGP_ERR_EVPN_ROUTE_CREATE
,
5566 "%u: Type4 route creation failure for ESI %s",
5567 bgp
->vrf_id
, esi_to_str(esi
, buf
, sizeof(buf
)));
5571 /* import all remote ES routes in th ES table */
5572 install_routes_for_es(bgp
, es
);
5578 * Cleanup EVPN information on disable - Need to delete and withdraw
5579 * EVPN routes from peers.
5581 void bgp_evpn_cleanup_on_disable(struct bgp
*bgp
)
5583 hash_iterate(bgp
->vnihash
, (void (*)(struct hash_backet
*,
5584 void *))cleanup_vni_on_disable
,
5589 * Cleanup EVPN information - invoked at the time of bgpd exit or when the
5590 * BGP instance (default) is being freed.
5592 void bgp_evpn_cleanup(struct bgp
*bgp
)
5594 hash_iterate(bgp
->vnihash
,
5595 (void (*)(struct hash_backet
*, void *))free_vni_entry
,
5598 hash_free(bgp
->import_rt_hash
);
5599 bgp
->import_rt_hash
= NULL
;
5601 hash_free(bgp
->vrf_import_rt_hash
);
5602 bgp
->vrf_import_rt_hash
= NULL
;
5604 hash_free(bgp
->vnihash
);
5605 bgp
->vnihash
= NULL
;
5607 hash_free(bgp
->esihash
);
5608 bgp
->esihash
= NULL
;
5610 list_delete_and_null(&bgp
->vrf_import_rtl
);
5611 list_delete_and_null(&bgp
->vrf_export_rtl
);
5612 list_delete_and_null(&bgp
->l2vnis
);
5616 * Initialization for EVPN
5619 * hash for RT to VNI
5621 void bgp_evpn_init(struct bgp
*bgp
)
5624 hash_create(vni_hash_key_make
, vni_hash_cmp
, "BGP VNI Hash");
5626 hash_create(esi_hash_keymake
, esi_cmp
,
5627 "BGP EVPN Local ESI Hash");
5628 bgp
->import_rt_hash
=
5629 hash_create(import_rt_hash_key_make
, import_rt_hash_cmp
,
5630 "BGP Import RT Hash");
5631 bgp
->vrf_import_rt_hash
=
5632 hash_create(vrf_import_rt_hash_key_make
, vrf_import_rt_hash_cmp
,
5633 "BGP VRF Import RT Hash");
5634 bgp
->vrf_import_rtl
= list_new();
5635 bgp
->vrf_import_rtl
->cmp
=
5636 (int (*)(void *, void *))evpn_route_target_cmp
;
5637 bgp
->vrf_import_rtl
->del
= evpn_xxport_delete_ecomm
;
5638 bgp
->vrf_export_rtl
= list_new();
5639 bgp
->vrf_export_rtl
->cmp
=
5640 (int (*)(void *, void *))evpn_route_target_cmp
;
5641 bgp
->vrf_export_rtl
->del
= evpn_xxport_delete_ecomm
;
5642 bgp
->l2vnis
= list_new();
5643 bgp
->l2vnis
->cmp
= (int (*)(void *, void *))vni_hash_cmp
;
5646 void bgp_evpn_vrf_delete(struct bgp
*bgp_vrf
)
5648 bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf
);