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
, afi_t afi
, safi_t safi
,
65 struct bgp_path_info
**ri
);
66 static int delete_all_vni_routes(struct bgp
*bgp
, struct bgpevpn
*vpn
);
72 /* compare two IPV4 VTEP IPs */
73 static int evpn_vtep_ip_cmp(const void *p1
, const void *p2
)
75 const struct in_addr
*ip1
= p1
;
76 const struct in_addr
*ip2
= p2
;
82 return (ip1
->s_addr
== ip2
->s_addr
);
86 * Make hash key for ESI.
88 static unsigned int esi_hash_keymake(void *p
)
90 struct evpnes
*pes
= p
;
91 const void *pnt
= (void *)pes
->esi
.val
;
93 return jhash(pnt
, ESI_BYTES
, 0xa5a5a55a);
99 static int esi_cmp(const void *p1
, const void *p2
)
101 const struct evpnes
*pes1
= p1
;
102 const struct evpnes
*pes2
= p2
;
104 if (pes1
== NULL
&& pes2
== NULL
)
107 if (pes1
== NULL
|| pes2
== NULL
)
110 return (memcmp(pes1
->esi
.val
, pes2
->esi
.val
, ESI_BYTES
) == 0);
116 static unsigned int vni_hash_key_make(void *p
)
118 struct bgpevpn
*vpn
= p
;
119 return (jhash_1word(vpn
->vni
, 0));
123 * Comparison function for vni hash
125 static int vni_hash_cmp(const void *p1
, const void *p2
)
127 const struct bgpevpn
*vpn1
= p1
;
128 const struct bgpevpn
*vpn2
= p2
;
134 return (vpn1
->vni
== vpn2
->vni
);
138 * Make vrf import route target hash key.
140 static unsigned int vrf_import_rt_hash_key_make(void *p
)
142 struct vrf_irt_node
*irt
= p
;
143 char *pnt
= irt
->rt
.val
;
145 return jhash(pnt
, 8, 0x5abc1234);
149 * Comparison function for vrf import rt hash
151 static int vrf_import_rt_hash_cmp(const void *p1
, const void *p2
)
153 const struct vrf_irt_node
*irt1
= p1
;
154 const struct vrf_irt_node
*irt2
= p2
;
156 if (irt1
== NULL
&& irt2
== NULL
)
159 if (irt1
== NULL
|| irt2
== NULL
)
162 return (memcmp(irt1
->rt
.val
, irt2
->rt
.val
, ECOMMUNITY_SIZE
) == 0);
166 * Create a new vrf import_rt in default instance
168 static struct vrf_irt_node
*vrf_import_rt_new(struct ecommunity_val
*rt
)
170 struct bgp
*bgp_def
= NULL
;
171 struct vrf_irt_node
*irt
;
173 bgp_def
= bgp_get_default();
175 flog_err(EC_BGP_NO_DFLT
,
176 "vrf import rt new - def instance not created yet");
180 irt
= XCALLOC(MTYPE_BGP_EVPN_VRF_IMPORT_RT
,
181 sizeof(struct vrf_irt_node
));
186 irt
->vrfs
= list_new();
189 if (!hash_get(bgp_def
->vrf_import_rt_hash
, irt
, hash_alloc_intern
)) {
190 XFREE(MTYPE_BGP_EVPN_VRF_IMPORT_RT
, irt
);
198 * Free the vrf import rt node
200 static void vrf_import_rt_free(struct vrf_irt_node
*irt
)
202 struct bgp
*bgp_def
= NULL
;
204 bgp_def
= bgp_get_default();
206 flog_err(EC_BGP_NO_DFLT
,
207 "vrf import rt free - def instance not created yet");
211 hash_release(bgp_def
->vrf_import_rt_hash
, irt
);
212 list_delete(&irt
->vrfs
);
213 XFREE(MTYPE_BGP_EVPN_VRF_IMPORT_RT
, irt
);
217 * Function to lookup Import RT node - used to map a RT to set of
218 * VNIs importing routes with that RT.
220 static struct vrf_irt_node
*lookup_vrf_import_rt(struct ecommunity_val
*rt
)
222 struct bgp
*bgp_def
= NULL
;
223 struct vrf_irt_node
*irt
;
224 struct vrf_irt_node tmp
;
226 bgp_def
= bgp_get_default();
228 flog_err(EC_BGP_NO_DFLT
,
229 "vrf import rt lookup - def instance not created yet");
233 memset(&tmp
, 0, sizeof(struct vrf_irt_node
));
234 memcpy(&tmp
.rt
, rt
, ECOMMUNITY_SIZE
);
235 irt
= hash_lookup(bgp_def
->vrf_import_rt_hash
, &tmp
);
240 * Is specified VRF present on the RT's list of "importing" VRFs?
242 static int is_vrf_present_in_irt_vrfs(struct list
*vrfs
, struct bgp
*bgp_vrf
)
244 struct listnode
*node
= NULL
, *nnode
= NULL
;
245 struct bgp
*tmp_bgp_vrf
= NULL
;
247 for (ALL_LIST_ELEMENTS(vrfs
, node
, nnode
, tmp_bgp_vrf
)) {
248 if (tmp_bgp_vrf
== bgp_vrf
)
255 * Make import route target hash key.
257 static unsigned int import_rt_hash_key_make(void *p
)
259 struct irt_node
*irt
= p
;
260 char *pnt
= irt
->rt
.val
;
262 return jhash(pnt
, 8, 0xdeadbeef);
266 * Comparison function for import rt hash
268 static int import_rt_hash_cmp(const void *p1
, const void *p2
)
270 const struct irt_node
*irt1
= p1
;
271 const struct irt_node
*irt2
= p2
;
273 if (irt1
== NULL
&& irt2
== NULL
)
276 if (irt1
== NULL
|| irt2
== NULL
)
279 return (memcmp(irt1
->rt
.val
, irt2
->rt
.val
, ECOMMUNITY_SIZE
) == 0);
283 * Create a new import_rt
285 static struct irt_node
*import_rt_new(struct bgp
*bgp
,
286 struct ecommunity_val
*rt
)
288 struct irt_node
*irt
;
293 irt
= XCALLOC(MTYPE_BGP_EVPN_IMPORT_RT
, sizeof(struct irt_node
));
298 irt
->vnis
= list_new();
301 if (!hash_get(bgp
->import_rt_hash
, irt
, hash_alloc_intern
)) {
302 XFREE(MTYPE_BGP_EVPN_IMPORT_RT
, irt
);
310 * Free the import rt node
312 static void import_rt_free(struct bgp
*bgp
, struct irt_node
*irt
)
314 hash_release(bgp
->import_rt_hash
, irt
);
315 list_delete(&irt
->vnis
);
316 XFREE(MTYPE_BGP_EVPN_IMPORT_RT
, irt
);
320 * Function to lookup Import RT node - used to map a RT to set of
321 * VNIs importing routes with that RT.
323 static struct irt_node
*lookup_import_rt(struct bgp
*bgp
,
324 struct ecommunity_val
*rt
)
326 struct irt_node
*irt
;
329 memset(&tmp
, 0, sizeof(struct irt_node
));
330 memcpy(&tmp
.rt
, rt
, ECOMMUNITY_SIZE
);
331 irt
= hash_lookup(bgp
->import_rt_hash
, &tmp
);
336 * Is specified VNI present on the RT's list of "importing" VNIs?
338 static int is_vni_present_in_irt_vnis(struct list
*vnis
, struct bgpevpn
*vpn
)
340 struct listnode
*node
, *nnode
;
341 struct bgpevpn
*tmp_vpn
;
343 for (ALL_LIST_ELEMENTS(vnis
, node
, nnode
, tmp_vpn
)) {
352 * Compare Route Targets.
354 static int evpn_route_target_cmp(struct ecommunity
*ecom1
,
355 struct ecommunity
*ecom2
)
363 if (!ecom1
&& !ecom2
)
366 if (ecom1
->str
&& !ecom2
->str
)
369 if (!ecom1
->str
&& ecom2
->str
)
372 if (!ecom1
->str
&& !ecom2
->str
)
375 return strcmp(ecom1
->str
, ecom2
->str
);
378 static void evpn_xxport_delete_ecomm(void *val
)
380 struct ecommunity
*ecomm
= val
;
381 ecommunity_free(&ecomm
);
385 * Mask off global-admin field of specified extended community (RT),
386 * just retain the local-admin field.
388 static inline void mask_ecom_global_admin(struct ecommunity_val
*dst
,
389 struct ecommunity_val
*src
)
395 if (type
== ECOMMUNITY_ENCODE_AS
) {
396 dst
->val
[2] = dst
->val
[3] = 0;
397 } else if (type
== ECOMMUNITY_ENCODE_AS4
398 || type
== ECOMMUNITY_ENCODE_IP
) {
399 dst
->val
[2] = dst
->val
[3] = 0;
400 dst
->val
[4] = dst
->val
[5] = 0;
405 * Map one RT to specified VRF.
406 * bgp_vrf = BGP vrf instance
408 static void map_vrf_to_rt(struct bgp
*bgp_vrf
, struct ecommunity_val
*eval
)
410 struct vrf_irt_node
*irt
= NULL
;
411 struct ecommunity_val eval_tmp
;
413 /* If using "automatic" RT,
414 * we only care about the local-admin sub-field.
415 * This is to facilitate using L3VNI(VRF-VNI)
416 * as the RT for EBGP peering too.
418 memcpy(&eval_tmp
, eval
, ECOMMUNITY_SIZE
);
419 if (!CHECK_FLAG(bgp_vrf
->vrf_flags
, BGP_VRF_IMPORT_RT_CFGD
))
420 mask_ecom_global_admin(&eval_tmp
, eval
);
422 irt
= lookup_vrf_import_rt(&eval_tmp
);
423 if (irt
&& is_vrf_present_in_irt_vrfs(irt
->vrfs
, bgp_vrf
))
424 /* Already mapped. */
428 irt
= vrf_import_rt_new(&eval_tmp
);
430 /* Add VRF to the list for this RT. */
431 listnode_add(irt
->vrfs
, bgp_vrf
);
435 * Unmap specified VRF from specified RT. If there are no other
436 * VRFs for this RT, then the RT hash is deleted.
437 * bgp_vrf: BGP VRF specific instance
439 static void unmap_vrf_from_rt(struct bgp
*bgp_vrf
, struct vrf_irt_node
*irt
)
441 /* Delete VRF from list for this RT. */
442 listnode_delete(irt
->vrfs
, bgp_vrf
);
443 if (!listnode_head(irt
->vrfs
)) {
444 vrf_import_rt_free(irt
);
449 * Map one RT to specified VNI.
451 static void map_vni_to_rt(struct bgp
*bgp
, struct bgpevpn
*vpn
,
452 struct ecommunity_val
*eval
)
454 struct irt_node
*irt
;
455 struct ecommunity_val eval_tmp
;
457 /* If using "automatic" RT, we only care about the local-admin
459 * This is to facilitate using VNI as the RT for EBGP peering too.
461 memcpy(&eval_tmp
, eval
, ECOMMUNITY_SIZE
);
462 if (!is_import_rt_configured(vpn
))
463 mask_ecom_global_admin(&eval_tmp
, eval
);
465 irt
= lookup_import_rt(bgp
, &eval_tmp
);
467 if (is_vni_present_in_irt_vnis(irt
->vnis
, vpn
))
468 /* Already mapped. */
472 irt
= import_rt_new(bgp
, &eval_tmp
);
476 /* Add VNI to the hash list for this RT. */
477 listnode_add(irt
->vnis
, vpn
);
481 * Unmap specified VNI from specified RT. If there are no other
482 * VNIs for this RT, then the RT hash is deleted.
484 static void unmap_vni_from_rt(struct bgp
*bgp
, struct bgpevpn
*vpn
,
485 struct irt_node
*irt
)
487 /* Delete VNI from hash list for this RT. */
488 listnode_delete(irt
->vnis
, vpn
);
489 if (!listnode_head(irt
->vnis
)) {
490 import_rt_free(bgp
, irt
);
495 * Create RT extended community automatically from passed information:
496 * of the form AS:VNI.
497 * NOTE: We use only the lower 16 bits of the AS. This is sufficient as
498 * the need is to get a RT value that will be unique across different
499 * VNIs but the same across routers (in the same AS) for a particular
502 static void form_auto_rt(struct bgp
*bgp
, vni_t vni
, struct list
*rtl
)
504 struct ecommunity_val eval
;
505 struct ecommunity
*ecomadd
;
507 if (bgp
->advertise_autort_rfc8365
)
508 vni
|= EVPN_AUTORT_VXLAN
;
509 encode_route_target_as((bgp
->as
& 0xFFFF), vni
, &eval
);
511 ecomadd
= ecommunity_new();
512 ecommunity_add_val(ecomadd
, &eval
);
513 listnode_add_sort(rtl
, ecomadd
);
517 * Derive RD and RT for a VNI automatically. Invoked at the time of
520 static void derive_rd_rt_for_vni(struct bgp
*bgp
, struct bgpevpn
*vpn
)
522 bgp_evpn_derive_auto_rd(bgp
, vpn
);
523 bgp_evpn_derive_auto_rt_import(bgp
, vpn
);
524 bgp_evpn_derive_auto_rt_export(bgp
, vpn
);
528 * Convert nexthop (remote VTEP IP) into an IPv6 address.
530 static void evpn_convert_nexthop_to_ipv6(struct attr
*attr
)
532 if (BGP_ATTR_NEXTHOP_AFI_IP6(attr
))
534 ipv4_to_ipv4_mapped_ipv6(&attr
->mp_nexthop_global
, attr
->nexthop
);
535 attr
->mp_nexthop_len
= IPV6_MAX_BYTELEN
;
539 * Add (update) or delete MACIP from zebra.
541 static int bgp_zebra_send_remote_macip(struct bgp
*bgp
, struct bgpevpn
*vpn
,
542 struct prefix_evpn
*p
,
543 struct in_addr remote_vtep_ip
, int add
,
544 uint8_t flags
, uint32_t seq
)
548 char buf1
[ETHER_ADDR_STRLEN
];
549 char buf2
[INET6_ADDRSTRLEN
];
550 char buf3
[INET6_ADDRSTRLEN
];
553 if (!zclient
|| zclient
->sock
< 0)
556 /* Don't try to register if Zebra doesn't know of this instance. */
557 if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp
))
563 zclient_create_header(
564 s
, add
? ZEBRA_REMOTE_MACIP_ADD
: ZEBRA_REMOTE_MACIP_DEL
,
566 stream_putl(s
, vpn
->vni
);
567 stream_put(s
, &p
->prefix
.macip_addr
.mac
.octet
, ETH_ALEN
); /* Mac Addr */
568 /* IP address length and IP address, if any. */
569 if (is_evpn_prefix_ipaddr_none(p
))
572 ipa_len
= is_evpn_prefix_ipaddr_v4(p
) ? IPV4_MAX_BYTELEN
574 stream_putl(s
, ipa_len
);
575 stream_put(s
, &p
->prefix
.macip_addr
.ip
.ip
.addr
, ipa_len
);
577 stream_put_in_addr(s
, &remote_vtep_ip
);
579 /* TX flags - MAC sticky status and/or gateway mac */
580 /* Also TX the sequence number of the best route. */
582 stream_putc(s
, flags
);
586 stream_putw_at(s
, 0, stream_get_endp(s
));
588 if (bgp_debug_zebra(NULL
))
590 "Tx %s MACIP, VNI %u MAC %s IP %s flags 0x%x seq %u remote VTEP %s",
591 add
? "ADD" : "DEL", vpn
->vni
,
592 prefix_mac2str(&p
->prefix
.macip_addr
.mac
,
594 ipaddr2str(&p
->prefix
.macip_addr
.ip
,
595 buf3
, sizeof(buf3
)), flags
, seq
,
596 inet_ntop(AF_INET
, &remote_vtep_ip
, buf2
,
599 return zclient_send_message(zclient
);
603 * Add (update) or delete remote VTEP from zebra.
605 static int bgp_zebra_send_remote_vtep(struct bgp
*bgp
, struct bgpevpn
*vpn
,
606 struct prefix_evpn
*p
, int add
)
611 if (!zclient
|| zclient
->sock
< 0)
614 /* Don't try to register if Zebra doesn't know of this instance. */
615 if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp
))
621 zclient_create_header(
622 s
, add
? ZEBRA_REMOTE_VTEP_ADD
: ZEBRA_REMOTE_VTEP_DEL
,
624 stream_putl(s
, vpn
->vni
);
625 if (is_evpn_prefix_ipaddr_v4(p
))
626 stream_put_in_addr(s
, &p
->prefix
.imet_addr
.ip
.ipaddr_v4
);
627 else if (is_evpn_prefix_ipaddr_v6(p
)) {
630 "Bad remote IP when trying to %s remote VTEP for VNI %u",
631 add
? "ADD" : "DEL", vpn
->vni
);
635 stream_putw_at(s
, 0, stream_get_endp(s
));
637 if (bgp_debug_zebra(NULL
))
638 zlog_debug("Tx %s Remote VTEP, VNI %u remote VTEP %s",
639 add
? "ADD" : "DEL", vpn
->vni
,
640 inet_ntoa(p
->prefix
.imet_addr
.ip
.ipaddr_v4
));
642 return zclient_send_message(zclient
);
646 * Build extended community for EVPN ES (type-4) route
648 static void build_evpn_type4_route_extcomm(struct evpnes
*es
,
651 struct ecommunity ecom_encap
;
652 struct ecommunity ecom_es_rt
;
653 struct ecommunity_val eval
;
654 struct ecommunity_val eval_es_rt
;
655 bgp_encap_types tnl_type
;
659 tnl_type
= BGP_ENCAP_TYPE_VXLAN
;
660 memset(&ecom_encap
, 0, sizeof(ecom_encap
));
661 encode_encap_extcomm(tnl_type
, &eval
);
663 ecom_encap
.val
= (uint8_t *)eval
.val
;
664 attr
->ecommunity
= ecommunity_dup(&ecom_encap
);
667 memset(&mac
, 0, sizeof(struct ethaddr
));
668 memset(&ecom_es_rt
, 0, sizeof(ecom_es_rt
));
669 es_get_system_mac(&es
->esi
, &mac
);
670 encode_es_rt_extcomm(&eval_es_rt
, &mac
);
672 ecom_es_rt
.val
= (uint8_t *)eval_es_rt
.val
;
674 ecommunity_merge(attr
->ecommunity
, &ecom_es_rt
);
676 attr
->flag
|= ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES
);
680 * Build extended communities for EVPN prefix route.
682 static void build_evpn_type5_route_extcomm(struct bgp
*bgp_vrf
,
685 struct ecommunity ecom_encap
;
686 struct ecommunity ecom_rmac
;
687 struct ecommunity_val eval
;
688 struct ecommunity_val eval_rmac
;
689 bgp_encap_types tnl_type
;
690 struct listnode
*node
, *nnode
;
691 struct ecommunity
*ecom
;
692 struct list
*vrf_export_rtl
= NULL
;
695 tnl_type
= BGP_ENCAP_TYPE_VXLAN
;
696 memset(&ecom_encap
, 0, sizeof(ecom_encap
));
697 encode_encap_extcomm(tnl_type
, &eval
);
699 ecom_encap
.val
= (uint8_t *)eval
.val
;
702 attr
->ecommunity
= ecommunity_dup(&ecom_encap
);
704 /* Add the export RTs for L3VNI/VRF */
705 vrf_export_rtl
= bgp_vrf
->vrf_export_rtl
;
706 for (ALL_LIST_ELEMENTS(vrf_export_rtl
, node
, nnode
, ecom
))
708 ecommunity_merge(attr
->ecommunity
, ecom
);
710 /* add the router mac extended community */
711 if (!is_zero_mac(&attr
->rmac
)) {
712 memset(&ecom_rmac
, 0, sizeof(ecom_rmac
));
713 encode_rmac_extcomm(&eval_rmac
, &attr
->rmac
);
715 ecom_rmac
.val
= (uint8_t *)eval_rmac
.val
;
717 ecommunity_merge(attr
->ecommunity
, &ecom_rmac
);
720 attr
->flag
|= ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES
);
724 * Build extended communities for EVPN route.
725 * This function is applicable for type-2 and type-3 routes. The layer-2 RT
726 * and ENCAP extended communities are applicable for all routes.
727 * The default gateway extended community and MAC mobility (sticky) extended
728 * community are added as needed based on passed settings - only for type-2
729 * routes. Likewise, the layer-3 RT and Router MAC extended communities are
730 * added, if present, based on passed settings - only for non-link-local
733 static void build_evpn_route_extcomm(struct bgpevpn
*vpn
, struct attr
*attr
,
736 struct ecommunity ecom_encap
;
737 struct ecommunity ecom_sticky
;
738 struct ecommunity ecom_default_gw
;
739 struct ecommunity ecom_rmac
;
740 struct ecommunity ecom_na
;
741 struct ecommunity_val eval
;
742 struct ecommunity_val eval_sticky
;
743 struct ecommunity_val eval_default_gw
;
744 struct ecommunity_val eval_rmac
;
745 struct ecommunity_val eval_na
;
747 bgp_encap_types tnl_type
;
748 struct listnode
*node
, *nnode
;
749 struct ecommunity
*ecom
;
751 struct list
*vrf_export_rtl
= NULL
;
754 tnl_type
= BGP_ENCAP_TYPE_VXLAN
;
755 memset(&ecom_encap
, 0, sizeof(ecom_encap
));
756 encode_encap_extcomm(tnl_type
, &eval
);
758 ecom_encap
.val
= (uint8_t *)eval
.val
;
761 attr
->ecommunity
= ecommunity_dup(&ecom_encap
);
763 /* Add the export RTs for L2VNI */
764 for (ALL_LIST_ELEMENTS(vpn
->export_rtl
, node
, nnode
, ecom
))
765 attr
->ecommunity
= ecommunity_merge(attr
->ecommunity
, ecom
);
767 /* Add the export RTs for L3VNI if told to - caller determines
768 * when this should be done.
771 vrf_export_rtl
= bgpevpn_get_vrf_export_rtl(vpn
);
772 if (vrf_export_rtl
&& !list_isempty(vrf_export_rtl
)) {
773 for (ALL_LIST_ELEMENTS(vrf_export_rtl
, node
, nnode
,
775 attr
->ecommunity
= ecommunity_merge(
776 attr
->ecommunity
, ecom
);
780 /* Add MAC mobility (sticky) if needed. */
783 memset(&ecom_sticky
, 0, sizeof(ecom_sticky
));
784 encode_mac_mobility_extcomm(1, seqnum
, &eval_sticky
);
785 ecom_sticky
.size
= 1;
786 ecom_sticky
.val
= (uint8_t *)eval_sticky
.val
;
788 ecommunity_merge(attr
->ecommunity
, &ecom_sticky
);
791 /* Add RMAC, if told to. */
793 memset(&ecom_rmac
, 0, sizeof(ecom_rmac
));
794 encode_rmac_extcomm(&eval_rmac
, &attr
->rmac
);
796 ecom_rmac
.val
= (uint8_t *)eval_rmac
.val
;
798 ecommunity_merge(attr
->ecommunity
, &ecom_rmac
);
801 /* Add default gateway, if needed. */
802 if (attr
->default_gw
) {
803 memset(&ecom_default_gw
, 0, sizeof(ecom_default_gw
));
804 encode_default_gw_extcomm(&eval_default_gw
);
805 ecom_default_gw
.size
= 1;
806 ecom_default_gw
.val
= (uint8_t *)eval_default_gw
.val
;
808 ecommunity_merge(attr
->ecommunity
, &ecom_default_gw
);
811 if (attr
->router_flag
) {
812 memset(&ecom_na
, 0, sizeof(ecom_na
));
813 encode_na_flag_extcomm(&eval_na
, attr
->router_flag
);
815 ecom_na
.val
= (uint8_t *)eval_na
.val
;
816 attr
->ecommunity
= ecommunity_merge(attr
->ecommunity
,
820 attr
->flag
|= ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES
);
824 * Add MAC mobility extended community to attribute.
826 static void add_mac_mobility_to_attr(uint32_t seq_num
, struct attr
*attr
)
828 struct ecommunity ecom_tmp
;
829 struct ecommunity_val eval
;
830 uint8_t *ecom_val_ptr
;
837 encode_mac_mobility_extcomm(0, seq_num
, &eval
);
839 /* Find current MM ecommunity */
842 if (attr
->ecommunity
) {
843 for (i
= 0; i
< attr
->ecommunity
->size
; i
++) {
844 pnt
= attr
->ecommunity
->val
+ (i
* 8);
848 if (type
== ECOMMUNITY_ENCODE_EVPN
850 == ECOMMUNITY_EVPN_SUBTYPE_MACMOBILITY
) {
851 ecom_val_ptr
= (uint8_t *)(attr
->ecommunity
->val
858 /* Update the existing MM ecommunity */
860 memcpy(ecom_val_ptr
, eval
.val
, sizeof(char) * ECOMMUNITY_SIZE
);
862 /* Add MM to existing */
864 memset(&ecom_tmp
, 0, sizeof(ecom_tmp
));
866 ecom_tmp
.val
= (uint8_t *)eval
.val
;
868 if (attr
->ecommunity
)
870 ecommunity_merge(attr
->ecommunity
, &ecom_tmp
);
872 attr
->ecommunity
= ecommunity_dup(&ecom_tmp
);
876 /* Install EVPN route into zebra. */
877 static int evpn_zebra_install(struct bgp
*bgp
, struct bgpevpn
*vpn
,
878 struct prefix_evpn
*p
,
879 struct in_addr remote_vtep_ip
, uint8_t flags
,
884 if (p
->prefix
.route_type
== BGP_EVPN_MAC_IP_ROUTE
)
885 ret
= bgp_zebra_send_remote_macip(bgp
, vpn
, p
, remote_vtep_ip
,
888 ret
= bgp_zebra_send_remote_vtep(bgp
, vpn
, p
, 1);
893 /* Uninstall EVPN route from zebra. */
894 static int evpn_zebra_uninstall(struct bgp
*bgp
, struct bgpevpn
*vpn
,
895 struct prefix_evpn
*p
,
896 struct in_addr remote_vtep_ip
)
900 if (p
->prefix
.route_type
== BGP_EVPN_MAC_IP_ROUTE
)
901 ret
= bgp_zebra_send_remote_macip(bgp
, vpn
, p
, remote_vtep_ip
,
904 ret
= bgp_zebra_send_remote_vtep(bgp
, vpn
, p
, 0);
910 * Due to MAC mobility, the prior "local" best route has been supplanted
911 * by a "remote" best route. The prior route has to be deleted and withdrawn
914 static void evpn_delete_old_local_route(struct bgp
*bgp
, struct bgpevpn
*vpn
,
916 struct bgp_path_info
*old_local
)
918 struct bgp_node
*global_rn
;
919 struct bgp_path_info
*ri
;
920 afi_t afi
= AFI_L2VPN
;
921 safi_t safi
= SAFI_EVPN
;
923 /* Locate route node in the global EVPN routing table. Note that
924 * this table is a 2-level tree (RD-level + Prefix-level) similar to
927 global_rn
= bgp_afi_node_lookup(bgp
->rib
[afi
][safi
], afi
, safi
,
928 (struct prefix
*)&rn
->p
, &vpn
->prd
);
930 /* Delete route entry in the global EVPN table. */
931 delete_evpn_route_entry(bgp
, afi
, safi
, global_rn
, &ri
);
933 /* Schedule for processing - withdraws to peers happen from
937 bgp_process(bgp
, global_rn
, afi
, safi
);
938 bgp_unlock_node(global_rn
);
941 /* Delete route entry in the VNI route table, caller to remove. */
942 bgp_info_delete(rn
, old_local
);
945 static struct in_addr
*es_vtep_new(struct in_addr vtep
)
949 ip
= XCALLOC(MTYPE_BGP_EVPN_ES_VTEP
, sizeof(struct in_addr
));
953 ip
->s_addr
= vtep
.s_addr
;
957 static void es_vtep_free(struct in_addr
*ip
)
959 XFREE(MTYPE_BGP_EVPN_ES_VTEP
, ip
);
962 /* check if VTEP is already part of the list */
963 static int is_vtep_present_in_list(struct list
*list
,
966 struct listnode
*node
= NULL
;
969 for (ALL_LIST_ELEMENTS_RO(list
, node
, tmp
)) {
970 if (tmp
->s_addr
== vtep
.s_addr
)
977 * Best path for ES route was changed,
978 * update the list of VTEPs for this ES
980 static int evpn_es_install_vtep(struct bgp
*bgp
,
982 struct prefix_evpn
*p
,
983 struct in_addr rvtep
)
985 struct in_addr
*vtep_ip
;
987 if (is_vtep_present_in_list(es
->vtep_list
, rvtep
))
991 vtep_ip
= es_vtep_new(rvtep
);
993 listnode_add_sort(es
->vtep_list
, vtep_ip
);
998 * Best path for ES route was changed,
999 * update the list of VTEPs for this ES
1001 static int evpn_es_uninstall_vtep(struct bgp
*bgp
,
1003 struct prefix_evpn
*p
,
1004 struct in_addr rvtep
)
1006 struct listnode
*node
, *nnode
, *node_to_del
= NULL
;
1007 struct in_addr
*tmp
;
1009 for (ALL_LIST_ELEMENTS(es
->vtep_list
, node
, nnode
, tmp
)) {
1010 if (tmp
->s_addr
== rvtep
.s_addr
) {
1017 list_delete_node(es
->vtep_list
, node_to_del
);
1023 * Calculate the best path for a ES(type-4) route.
1025 static int evpn_es_route_select_install(struct bgp
*bgp
,
1027 struct bgp_node
*rn
)
1030 afi_t afi
= AFI_L2VPN
;
1031 safi_t safi
= SAFI_EVPN
;
1032 struct bgp_path_info
*old_select
; /* old best */
1033 struct bgp_path_info
*new_select
; /* new best */
1034 struct bgp_path_info_pair old_and_new
;
1036 /* Compute the best path. */
1037 bgp_best_selection(bgp
, rn
, &bgp
->maxpaths
[afi
][safi
],
1038 &old_and_new
, afi
, safi
);
1039 old_select
= old_and_new
.old
;
1040 new_select
= old_and_new
.new;
1043 * If the best path hasn't changed - see if something needs to be
1046 if (old_select
&& old_select
== new_select
1047 && old_select
->type
== ZEBRA_ROUTE_BGP
1048 && old_select
->sub_type
== BGP_ROUTE_IMPORTED
1049 && !CHECK_FLAG(rn
->flags
, BGP_NODE_USER_CLEAR
)
1050 && !CHECK_FLAG(old_select
->flags
, BGP_PATH_ATTR_CHANGED
)
1051 && !bgp
->addpath_tx_used
[afi
][safi
]) {
1052 if (bgp_zebra_has_route_changed(rn
, old_select
)) {
1053 ret
= evpn_es_install_vtep(bgp
, es
,
1054 (struct prefix_evpn
*)&rn
->p
,
1055 old_select
->attr
->nexthop
);
1057 UNSET_FLAG(old_select
->flags
, BGP_PATH_MULTIPATH_CHG
);
1058 bgp_zebra_clear_route_change_flags(rn
);
1062 /* If the user did a "clear" this flag will be set */
1063 UNSET_FLAG(rn
->flags
, BGP_NODE_USER_CLEAR
);
1066 * bestpath has changed; update relevant fields and install or uninstall
1067 * into the zebra RIB.
1069 if (old_select
|| new_select
)
1070 bgp_bump_version(rn
);
1073 bgp_info_unset_flag(rn
, old_select
, BGP_PATH_SELECTED
);
1075 bgp_info_set_flag(rn
, new_select
, BGP_PATH_SELECTED
);
1076 bgp_info_unset_flag(rn
, new_select
, BGP_PATH_ATTR_CHANGED
);
1077 UNSET_FLAG(new_select
->flags
, BGP_PATH_MULTIPATH_CHG
);
1080 if (new_select
&& new_select
->type
== ZEBRA_ROUTE_BGP
1081 && new_select
->sub_type
== BGP_ROUTE_IMPORTED
) {
1082 ret
= evpn_es_install_vtep(bgp
, es
,
1083 (struct prefix_evpn
*)&rn
->p
,
1084 new_select
->attr
->nexthop
);
1086 if (old_select
&& old_select
->type
== ZEBRA_ROUTE_BGP
1087 && old_select
->sub_type
== BGP_ROUTE_IMPORTED
)
1088 ret
= evpn_es_uninstall_vtep(
1089 bgp
, es
, (struct prefix_evpn
*)&rn
->p
,
1090 old_select
->attr
->nexthop
);
1093 /* Clear any route change flags. */
1094 bgp_zebra_clear_route_change_flags(rn
);
1096 /* Reap old select bgp_info, if it has been removed */
1097 if (old_select
&& CHECK_FLAG(old_select
->flags
, BGP_PATH_REMOVED
))
1098 bgp_info_reap(rn
, old_select
);
1104 * Calculate the best path for an EVPN route. Install/update best path in zebra,
1107 static int evpn_route_select_install(struct bgp
*bgp
, struct bgpevpn
*vpn
,
1108 struct bgp_node
*rn
)
1110 struct bgp_path_info
*old_select
, *new_select
;
1111 struct bgp_path_info_pair old_and_new
;
1112 struct prefix_evpn
*evp
;
1113 afi_t afi
= AFI_L2VPN
;
1114 safi_t safi
= SAFI_EVPN
;
1118 /* Compute the best path. */
1119 bgp_best_selection(bgp
, rn
, &bgp
->maxpaths
[afi
][safi
], &old_and_new
,
1121 old_select
= old_and_new
.old
;
1122 new_select
= old_and_new
.new;
1124 evp
= (struct prefix_evpn
*)&rn
->p
;
1125 /* If the best path hasn't changed - see if there is still something to
1129 if (old_select
&& old_select
== new_select
1130 && old_select
->type
== ZEBRA_ROUTE_BGP
1131 && old_select
->sub_type
== BGP_ROUTE_IMPORTED
1132 && !CHECK_FLAG(rn
->flags
, BGP_NODE_USER_CLEAR
)
1133 && !CHECK_FLAG(old_select
->flags
, BGP_PATH_ATTR_CHANGED
)
1134 && !bgp
->addpath_tx_used
[afi
][safi
]) {
1135 if (bgp_zebra_has_route_changed(rn
, old_select
)) {
1136 if (old_select
->attr
->sticky
)
1137 SET_FLAG(flags
, ZEBRA_MACIP_TYPE_STICKY
);
1138 if (old_select
->attr
->default_gw
)
1139 SET_FLAG(flags
, ZEBRA_MACIP_TYPE_GW
);
1140 if (is_evpn_prefix_ipaddr_v6(evp
) &&
1141 old_select
->attr
->router_flag
)
1142 SET_FLAG(flags
, ZEBRA_MACIP_TYPE_ROUTER_FLAG
);
1144 ret
= evpn_zebra_install(
1145 bgp
, vpn
, (struct prefix_evpn
*)&rn
->p
,
1146 old_select
->attr
->nexthop
, flags
,
1147 mac_mobility_seqnum(old_select
->attr
));
1149 UNSET_FLAG(old_select
->flags
, BGP_PATH_MULTIPATH_CHG
);
1150 bgp_zebra_clear_route_change_flags(rn
);
1154 /* If the user did a "clear" this flag will be set */
1155 UNSET_FLAG(rn
->flags
, BGP_NODE_USER_CLEAR
);
1157 /* bestpath has changed; update relevant fields and install or uninstall
1158 * into the zebra RIB.
1160 if (old_select
|| new_select
)
1161 bgp_bump_version(rn
);
1164 bgp_info_unset_flag(rn
, old_select
, BGP_PATH_SELECTED
);
1166 bgp_info_set_flag(rn
, new_select
, BGP_PATH_SELECTED
);
1167 bgp_info_unset_flag(rn
, new_select
, BGP_PATH_ATTR_CHANGED
);
1168 UNSET_FLAG(new_select
->flags
, BGP_PATH_MULTIPATH_CHG
);
1171 if (new_select
&& new_select
->type
== ZEBRA_ROUTE_BGP
1172 && new_select
->sub_type
== BGP_ROUTE_IMPORTED
) {
1174 if (new_select
->attr
->sticky
)
1175 SET_FLAG(flags
, ZEBRA_MACIP_TYPE_STICKY
);
1176 if (new_select
->attr
->default_gw
)
1177 SET_FLAG(flags
, ZEBRA_MACIP_TYPE_GW
);
1178 if (is_evpn_prefix_ipaddr_v6(evp
) &&
1179 new_select
->attr
->router_flag
)
1180 SET_FLAG(flags
, ZEBRA_MACIP_TYPE_ROUTER_FLAG
);
1182 ret
= evpn_zebra_install(bgp
, vpn
, (struct prefix_evpn
*)&rn
->p
,
1183 new_select
->attr
->nexthop
, flags
,
1184 mac_mobility_seqnum(new_select
->attr
));
1185 /* If an old best existed and it was a "local" route, the only
1187 * it would be supplanted is due to MAC mobility procedures. So,
1189 * need to do an implicit delete and withdraw that route from
1192 if (old_select
&& old_select
->peer
== bgp
->peer_self
1193 && old_select
->type
== ZEBRA_ROUTE_BGP
1194 && old_select
->sub_type
== BGP_ROUTE_STATIC
)
1195 evpn_delete_old_local_route(bgp
, vpn
, rn
, old_select
);
1197 if (old_select
&& old_select
->type
== ZEBRA_ROUTE_BGP
1198 && old_select
->sub_type
== BGP_ROUTE_IMPORTED
)
1199 ret
= evpn_zebra_uninstall(bgp
, vpn
,
1200 (struct prefix_evpn
*)&rn
->p
,
1201 old_select
->attr
->nexthop
);
1204 /* Clear any route change flags. */
1205 bgp_zebra_clear_route_change_flags(rn
);
1207 /* Reap old select bgp_info, if it has been removed */
1208 if (old_select
&& CHECK_FLAG(old_select
->flags
, BGP_PATH_REMOVED
))
1209 bgp_info_reap(rn
, old_select
);
1215 * Return true if the local ri for this rn is of type gateway mac
1217 static int evpn_route_is_def_gw(struct bgp
*bgp
, struct bgp_node
*rn
)
1219 struct bgp_path_info
*tmp_ri
= NULL
;
1220 struct bgp_path_info
*local_ri
= NULL
;
1223 for (tmp_ri
= rn
->info
; tmp_ri
; tmp_ri
= tmp_ri
->next
) {
1224 if (tmp_ri
->peer
== bgp
->peer_self
1225 && tmp_ri
->type
== ZEBRA_ROUTE_BGP
1226 && tmp_ri
->sub_type
== BGP_ROUTE_STATIC
)
1233 return local_ri
->attr
->default_gw
;
1238 * Return true if the local ri for this rn has sticky set
1240 static int evpn_route_is_sticky(struct bgp
*bgp
, struct bgp_node
*rn
)
1242 struct bgp_path_info
*tmp_ri
;
1243 struct bgp_path_info
*local_ri
;
1246 for (tmp_ri
= rn
->info
; tmp_ri
; tmp_ri
= tmp_ri
->next
) {
1247 if (tmp_ri
->peer
== bgp
->peer_self
1248 && tmp_ri
->type
== ZEBRA_ROUTE_BGP
1249 && tmp_ri
->sub_type
== BGP_ROUTE_STATIC
)
1256 return local_ri
->attr
->sticky
;
1260 * create or update EVPN type4 route entry.
1261 * This could be in the ES table or the global table.
1262 * TODO: handle remote ES (type4) routes as well
1264 static int update_evpn_type4_route_entry(struct bgp
*bgp
, struct evpnes
*es
,
1265 afi_t afi
, safi_t safi
,
1266 struct bgp_node
*rn
, struct attr
*attr
,
1267 int add
, struct bgp_path_info
**ri
,
1270 char buf
[ESI_STR_LEN
];
1271 char buf1
[INET6_ADDRSTRLEN
];
1272 struct bgp_path_info
*tmp_ri
= NULL
;
1273 struct bgp_path_info
*local_ri
= NULL
; /* local route entry if any */
1274 struct bgp_path_info
*remote_ri
= NULL
; /* remote route entry if any */
1275 struct attr
*attr_new
= NULL
;
1276 struct prefix_evpn
*evp
= NULL
;
1280 evp
= (struct prefix_evpn
*)&rn
->p
;
1282 /* locate the local and remote entries if any */
1283 for (tmp_ri
= rn
->info
; tmp_ri
; tmp_ri
= tmp_ri
->next
) {
1284 if (tmp_ri
->peer
== bgp
->peer_self
&&
1285 tmp_ri
->type
== ZEBRA_ROUTE_BGP
&&
1286 tmp_ri
->sub_type
== BGP_ROUTE_STATIC
)
1288 if (tmp_ri
->type
== ZEBRA_ROUTE_BGP
1289 && tmp_ri
->sub_type
== BGP_ROUTE_IMPORTED
1290 && CHECK_FLAG(tmp_ri
->flags
, BGP_PATH_VALID
))
1294 /* we don't expect to see a remote_ri at this point.
1295 * An ES route has esi + vtep_ip as the key,
1296 * We shouldn't see the same route from any other vtep.
1301 "%u ERROR: local es route for ESI: %s Vtep %s also learnt from remote",
1303 esi_to_str(&evp
->prefix
.es_addr
.esi
, buf
, sizeof(buf
)),
1304 ipaddr2str(&es
->originator_ip
, buf1
, sizeof(buf1
)));
1308 if (!local_ri
&& !add
)
1311 /* create or update the entry */
1314 /* Add or update attribute to hash */
1315 attr_new
= bgp_attr_intern(attr
);
1317 /* Create new route with its attribute. */
1318 tmp_ri
= info_make(ZEBRA_ROUTE_BGP
, BGP_ROUTE_STATIC
,
1319 0, bgp
->peer_self
, attr_new
, rn
);
1320 SET_FLAG(tmp_ri
->flags
, BGP_PATH_VALID
);
1322 /* add the newly created path to the route-node */
1323 bgp_info_add(rn
, tmp_ri
);
1326 if (attrhash_cmp(tmp_ri
->attr
, attr
)
1327 && !CHECK_FLAG(tmp_ri
->flags
, BGP_PATH_REMOVED
))
1330 /* The attribute has changed.
1331 * Add (or update) attribute to hash. */
1332 attr_new
= bgp_attr_intern(attr
);
1333 bgp_info_set_flag(rn
, tmp_ri
, BGP_PATH_ATTR_CHANGED
);
1335 /* Restore route, if needed. */
1336 if (CHECK_FLAG(tmp_ri
->flags
, BGP_PATH_REMOVED
))
1337 bgp_info_restore(rn
, tmp_ri
);
1339 /* Unintern existing, set to new. */
1340 bgp_attr_unintern(&tmp_ri
->attr
);
1341 tmp_ri
->attr
= attr_new
;
1342 tmp_ri
->uptime
= bgp_clock();
1346 /* Return back the route entry. */
1351 /* update evpn es (type-4) route */
1352 static int update_evpn_type4_route(struct bgp
*bgp
,
1354 struct prefix_evpn
*p
)
1357 int route_changed
= 0;
1358 char buf
[ESI_STR_LEN
];
1359 char buf1
[INET6_ADDRSTRLEN
];
1360 afi_t afi
= AFI_L2VPN
;
1361 safi_t safi
= SAFI_EVPN
;
1363 struct attr
*attr_new
= NULL
;
1364 struct bgp_node
*rn
= NULL
;
1365 struct bgp_path_info
*ri
= NULL
;
1367 memset(&attr
, 0, sizeof(struct attr
));
1369 /* Build path-attribute for this route. */
1370 bgp_attr_default_set(&attr
, BGP_ORIGIN_IGP
);
1371 attr
.nexthop
= es
->originator_ip
.ipaddr_v4
;
1372 attr
.mp_nexthop_global_in
= es
->originator_ip
.ipaddr_v4
;
1373 attr
.mp_nexthop_len
= BGP_ATTR_NHLEN_IPV4
;
1375 /* Set up extended community. */
1376 build_evpn_type4_route_extcomm(es
, &attr
);
1378 /* First, create (or fetch) route node within the ESI. */
1379 /* NOTE: There is no RD here. */
1380 rn
= bgp_node_get(es
->route_table
, (struct prefix
*)p
);
1382 /* Create or update route entry. */
1383 ret
= update_evpn_type4_route_entry(bgp
, es
, afi
, safi
, rn
,
1387 flog_err(EC_BGP_ES_INVALID
,
1388 "%u ERROR: Failed to updated ES route ESI: %s VTEP %s",
1390 esi_to_str(&p
->prefix
.es_addr
.esi
, buf
, sizeof(buf
)),
1391 ipaddr2str(&es
->originator_ip
, buf1
, sizeof(buf1
)));
1395 attr_new
= ri
->attr
;
1397 /* Perform route selection;
1398 * this is just to set the flags correctly
1399 * as local route in the ES always wins.
1401 evpn_es_route_select_install(bgp
, es
, rn
);
1402 bgp_unlock_node(rn
);
1404 /* If this is a new route or some attribute has changed, export the
1405 * route to the global table. The route will be advertised to peers
1406 * from there. Note that this table is a 2-level tree (RD-level +
1407 * Prefix-level) similar to L3VPN routes.
1409 if (route_changed
) {
1410 struct bgp_path_info
*global_ri
;
1412 rn
= bgp_afi_node_get(bgp
->rib
[afi
][safi
], afi
, safi
,
1413 (struct prefix
*)p
, &es
->prd
);
1414 update_evpn_type4_route_entry(bgp
, es
, afi
, safi
,
1419 /* Schedule for processing and unlock node. */
1420 bgp_process(bgp
, rn
, afi
, safi
);
1421 bgp_unlock_node(rn
);
1424 /* Unintern temporary. */
1425 aspath_unintern(&attr
.aspath
);
1429 static int update_evpn_type5_route_entry(struct bgp
*bgp_def
,
1430 struct bgp
*bgp_vrf
, afi_t afi
,
1431 safi_t safi
, struct bgp_node
*rn
,
1432 struct attr
*attr
, int *route_changed
)
1434 struct attr
*attr_new
= NULL
;
1435 struct bgp_path_info
*ri
= NULL
;
1436 mpls_label_t label
= MPLS_INVALID_LABEL
;
1437 struct bgp_path_info
*local_ri
= NULL
;
1438 struct bgp_path_info
*tmp_ri
= NULL
;
1441 /* locate the local route entry if any */
1442 for (tmp_ri
= rn
->info
; tmp_ri
; tmp_ri
= tmp_ri
->next
) {
1443 if (tmp_ri
->peer
== bgp_def
->peer_self
1444 && tmp_ri
->type
== ZEBRA_ROUTE_BGP
1445 && tmp_ri
->sub_type
== BGP_ROUTE_STATIC
)
1450 * create a new route entry if one doesnt exist.
1451 * Otherwise see if route attr has changed
1455 /* route has changed as this is the first entry */
1458 /* Add (or update) attribute to hash. */
1459 attr_new
= bgp_attr_intern(attr
);
1461 /* create the route info from attribute */
1462 ri
= info_make(ZEBRA_ROUTE_BGP
, BGP_ROUTE_STATIC
, 0,
1463 bgp_def
->peer_self
, attr_new
, rn
);
1464 SET_FLAG(ri
->flags
, BGP_PATH_VALID
);
1466 /* Type-5 routes advertise the L3-VNI */
1467 bgp_info_extra_get(ri
);
1468 vni2label(bgp_vrf
->l3vni
, &label
);
1469 memcpy(&ri
->extra
->label
, &label
, sizeof(label
));
1470 ri
->extra
->num_labels
= 1;
1472 /* add the route entry to route node*/
1473 bgp_info_add(rn
, ri
);
1477 if (!attrhash_cmp(tmp_ri
->attr
, attr
)) {
1479 /* attribute changed */
1482 /* The attribute has changed. */
1483 /* Add (or update) attribute to hash. */
1484 attr_new
= bgp_attr_intern(attr
);
1485 bgp_info_set_flag(rn
, tmp_ri
, BGP_PATH_ATTR_CHANGED
);
1487 /* Restore route, if needed. */
1488 if (CHECK_FLAG(tmp_ri
->flags
, BGP_PATH_REMOVED
))
1489 bgp_info_restore(rn
, tmp_ri
);
1491 /* Unintern existing, set to new. */
1492 bgp_attr_unintern(&tmp_ri
->attr
);
1493 tmp_ri
->attr
= attr_new
;
1494 tmp_ri
->uptime
= bgp_clock();
1500 /* update evpn type-5 route entry */
1501 static int update_evpn_type5_route(struct bgp
*bgp_vrf
, struct prefix_evpn
*evp
,
1502 struct attr
*src_attr
)
1504 afi_t afi
= AFI_L2VPN
;
1505 safi_t safi
= SAFI_EVPN
;
1507 struct bgp_node
*rn
= NULL
;
1508 struct bgp
*bgp_def
= NULL
;
1509 int route_changed
= 0;
1511 bgp_def
= bgp_get_default();
1515 /* Build path attribute for this route - use the source attr, if
1516 * present, else treat as locally originated.
1519 bgp_attr_dup(&attr
, src_attr
);
1521 memset(&attr
, 0, sizeof(struct attr
));
1522 bgp_attr_default_set(&attr
, BGP_ORIGIN_IGP
);
1524 /* Set nexthop to ourselves and fill in the Router MAC. */
1525 attr
.nexthop
= bgp_vrf
->originator_ip
;
1526 attr
.mp_nexthop_global_in
= bgp_vrf
->originator_ip
;
1527 attr
.mp_nexthop_len
= BGP_ATTR_NHLEN_IPV4
;
1528 memcpy(&attr
.rmac
, &bgp_vrf
->rmac
, sizeof(struct ethaddr
));
1530 /* Setup RT and encap extended community */
1531 build_evpn_type5_route_extcomm(bgp_vrf
, &attr
);
1533 /* get the route node in global table */
1534 rn
= bgp_afi_node_get(bgp_def
->rib
[afi
][safi
], afi
, safi
,
1535 (struct prefix
*)evp
, &bgp_vrf
->vrf_prd
);
1538 /* create or update the route entry within the route node */
1539 update_evpn_type5_route_entry(bgp_def
, bgp_vrf
, afi
, safi
, rn
, &attr
,
1542 /* schedule for processing and unlock node */
1543 if (route_changed
) {
1544 bgp_process(bgp_def
, rn
, afi
, safi
);
1545 bgp_unlock_node(rn
);
1548 /* uninten temporary */
1550 aspath_unintern(&attr
.aspath
);
1555 * Create or update EVPN route entry. This could be in the VNI route table
1556 * or the global route table.
1558 static int update_evpn_route_entry(struct bgp
*bgp
, struct bgpevpn
*vpn
,
1559 afi_t afi
, safi_t safi
, struct bgp_node
*rn
,
1560 struct attr
*attr
, int add
,
1561 struct bgp_path_info
**ri
, uint8_t flags
,
1564 struct bgp_path_info
*tmp_ri
;
1565 struct bgp_path_info
*local_ri
;
1566 struct attr
*attr_new
;
1567 mpls_label_t label
[BGP_MAX_LABELS
];
1568 uint32_t num_labels
= 1;
1569 int route_change
= 1;
1571 struct prefix_evpn
*evp
;
1574 evp
= (struct prefix_evpn
*)&rn
->p
;
1575 memset(&label
, 0, sizeof(label
));
1577 /* See if this is an update of an existing route, or a new add. */
1579 for (tmp_ri
= rn
->info
; tmp_ri
; tmp_ri
= tmp_ri
->next
) {
1580 if (tmp_ri
->peer
== bgp
->peer_self
1581 && tmp_ri
->type
== ZEBRA_ROUTE_BGP
1582 && tmp_ri
->sub_type
== BGP_ROUTE_STATIC
)
1586 /* If route doesn't exist already, create a new one, if told to.
1587 * Otherwise act based on whether the attributes of the route have
1590 if (!local_ri
&& !add
)
1593 /* For non-GW MACs, update MAC mobility seq number, if needed. */
1594 if (seq
&& !CHECK_FLAG(flags
, ZEBRA_MACIP_TYPE_GW
))
1595 add_mac_mobility_to_attr(seq
, attr
);
1598 /* Add (or update) attribute to hash. */
1599 attr_new
= bgp_attr_intern(attr
);
1601 /* Extract MAC mobility sequence number, if any. */
1602 attr_new
->mm_seqnum
=
1603 bgp_attr_mac_mobility_seqnum(attr_new
, &sticky
);
1604 attr_new
->sticky
= sticky
;
1606 /* Create new route with its attribute. */
1607 tmp_ri
= info_make(ZEBRA_ROUTE_BGP
, BGP_ROUTE_STATIC
, 0,
1608 bgp
->peer_self
, attr_new
, rn
);
1609 SET_FLAG(tmp_ri
->flags
, BGP_PATH_VALID
);
1610 bgp_info_extra_get(tmp_ri
);
1612 /* The VNI goes into the 'label' field of the route */
1613 vni2label(vpn
->vni
, &label
[0]);
1615 /* Type-2 routes may carry a second VNI - the L3-VNI.
1616 * Only attach second label if we are advertising two labels for
1619 if (evp
->prefix
.route_type
== BGP_EVPN_MAC_IP_ROUTE
1620 && CHECK_FLAG(vpn
->flags
, VNI_FLAG_USE_TWO_LABELS
)) {
1623 l3vni
= bgpevpn_get_l3vni(vpn
);
1625 vni2label(l3vni
, &label
[1]);
1630 memcpy(&tmp_ri
->extra
->label
, label
, sizeof(label
));
1631 tmp_ri
->extra
->num_labels
= num_labels
;
1632 bgp_info_add(rn
, tmp_ri
);
1635 if (attrhash_cmp(tmp_ri
->attr
, attr
)
1636 && !CHECK_FLAG(tmp_ri
->flags
, BGP_PATH_REMOVED
))
1640 * The attributes have changed, type-2 routes needs to
1641 * be advertised with right labels.
1643 vni2label(vpn
->vni
, &label
[0]);
1644 if (evp
->prefix
.route_type
== BGP_EVPN_MAC_IP_ROUTE
1645 && CHECK_FLAG(vpn
->flags
,
1646 VNI_FLAG_USE_TWO_LABELS
)) {
1649 l3vni
= bgpevpn_get_l3vni(vpn
);
1651 vni2label(l3vni
, &label
[1]);
1655 memcpy(&tmp_ri
->extra
->label
, label
, sizeof(label
));
1656 tmp_ri
->extra
->num_labels
= num_labels
;
1658 /* The attribute has changed. */
1659 /* Add (or update) attribute to hash. */
1660 attr_new
= bgp_attr_intern(attr
);
1661 bgp_info_set_flag(rn
, tmp_ri
, BGP_PATH_ATTR_CHANGED
);
1663 /* Extract MAC mobility sequence number, if any. */
1664 attr_new
->mm_seqnum
=
1665 bgp_attr_mac_mobility_seqnum(attr_new
, &sticky
);
1666 attr_new
->sticky
= sticky
;
1668 /* Restore route, if needed. */
1669 if (CHECK_FLAG(tmp_ri
->flags
, BGP_PATH_REMOVED
))
1670 bgp_info_restore(rn
, tmp_ri
);
1672 /* Unintern existing, set to new. */
1673 bgp_attr_unintern(&tmp_ri
->attr
);
1674 tmp_ri
->attr
= attr_new
;
1675 tmp_ri
->uptime
= bgp_clock();
1679 /* Return back the route entry. */
1681 return route_change
;
1685 * Create or update EVPN route (of type based on prefix) for specified VNI
1686 * and schedule for processing.
1688 static int update_evpn_route(struct bgp
*bgp
, struct bgpevpn
*vpn
,
1689 struct prefix_evpn
*p
, uint8_t flags
,
1692 struct bgp_node
*rn
;
1694 struct attr
*attr_new
;
1695 int add_l3_ecomm
= 0;
1696 struct bgp_path_info
*ri
;
1697 afi_t afi
= AFI_L2VPN
;
1698 safi_t safi
= SAFI_EVPN
;
1701 memset(&attr
, 0, sizeof(struct attr
));
1703 /* Build path-attribute for this route. */
1704 bgp_attr_default_set(&attr
, BGP_ORIGIN_IGP
);
1705 attr
.nexthop
= vpn
->originator_ip
;
1706 attr
.mp_nexthop_global_in
= vpn
->originator_ip
;
1707 attr
.mp_nexthop_len
= BGP_ATTR_NHLEN_IPV4
;
1708 attr
.sticky
= CHECK_FLAG(flags
, ZEBRA_MACIP_TYPE_STICKY
) ? 1 : 0;
1709 attr
.default_gw
= CHECK_FLAG(flags
, ZEBRA_MACIP_TYPE_GW
) ? 1 : 0;
1710 attr
.router_flag
= CHECK_FLAG(flags
,
1711 ZEBRA_MACIP_TYPE_ROUTER_FLAG
) ? 1 : 0;
1713 /* PMSI is only needed for type-3 routes */
1714 if (p
->prefix
.route_type
== BGP_EVPN_IMET_ROUTE
)
1715 attr
.flag
|= ATTR_FLAG_BIT(BGP_ATTR_PMSI_TUNNEL
);
1717 /* router mac is only needed for type-2 routes here. */
1718 if (p
->prefix
.route_type
== BGP_EVPN_MAC_IP_ROUTE
)
1719 bgpevpn_get_rmac(vpn
, &attr
.rmac
);
1720 vni2label(vpn
->vni
, &(attr
.label
));
1722 /* Include L3 VNI related RTs and RMAC for type-2 routes, if they're
1723 * IPv4 or IPv6 global addresses and we're advertising L3VNI with
1726 if (p
->prefix
.route_type
== BGP_EVPN_MAC_IP_ROUTE
&&
1727 (is_evpn_prefix_ipaddr_v4(p
) ||
1728 !IN6_IS_ADDR_LINKLOCAL(&p
->prefix
.macip_addr
.ip
.ipaddr_v6
)) &&
1729 CHECK_FLAG(vpn
->flags
, VNI_FLAG_USE_TWO_LABELS
) &&
1730 bgpevpn_get_l3vni(vpn
))
1733 /* Set up extended community. */
1734 build_evpn_route_extcomm(vpn
, &attr
, add_l3_ecomm
);
1736 /* First, create (or fetch) route node within the VNI. */
1737 /* NOTE: There is no RD here. */
1738 rn
= bgp_node_get(vpn
->route_table
, (struct prefix
*)p
);
1740 /* Create or update route entry. */
1741 route_change
= update_evpn_route_entry(bgp
, vpn
, afi
, safi
, rn
, &attr
,
1742 1, &ri
, flags
, seq
);
1744 attr_new
= ri
->attr
;
1746 /* Perform route selection; this is just to set the flags correctly
1747 * as local route in the VNI always wins.
1749 evpn_route_select_install(bgp
, vpn
, rn
);
1750 bgp_unlock_node(rn
);
1752 /* If this is a new route or some attribute has changed, export the
1753 * route to the global table. The route will be advertised to peers
1754 * from there. Note that this table is a 2-level tree (RD-level +
1755 * Prefix-level) similar to L3VPN routes.
1758 struct bgp_path_info
*global_ri
;
1760 rn
= bgp_afi_node_get(bgp
->rib
[afi
][safi
], afi
, safi
,
1761 (struct prefix
*)p
, &vpn
->prd
);
1762 update_evpn_route_entry(bgp
, vpn
, afi
, safi
, rn
, attr_new
, 1,
1763 &global_ri
, flags
, seq
);
1765 /* Schedule for processing and unlock node. */
1766 bgp_process(bgp
, rn
, afi
, safi
);
1767 bgp_unlock_node(rn
);
1770 /* Unintern temporary. */
1771 aspath_unintern(&attr
.aspath
);
1777 * Delete EVPN route entry.
1778 * The entry can be in ESI/VNI table or the global table.
1780 static void delete_evpn_route_entry(struct bgp
*bgp
, afi_t afi
, safi_t safi
,
1781 struct bgp_node
*rn
,
1782 struct bgp_path_info
**ri
)
1784 struct bgp_path_info
*tmp_ri
;
1788 /* Now, find matching route. */
1789 for (tmp_ri
= rn
->info
; tmp_ri
; tmp_ri
= tmp_ri
->next
)
1790 if (tmp_ri
->peer
== bgp
->peer_self
1791 && tmp_ri
->type
== ZEBRA_ROUTE_BGP
1792 && tmp_ri
->sub_type
== BGP_ROUTE_STATIC
)
1797 /* Mark route for delete. */
1799 bgp_info_delete(rn
, tmp_ri
);
1804 /* Delete EVPN ES (type-4) route */
1805 static int delete_evpn_type4_route(struct bgp
*bgp
,
1807 struct prefix_evpn
*p
)
1809 afi_t afi
= AFI_L2VPN
;
1810 safi_t safi
= SAFI_EVPN
;
1811 struct bgp_path_info
*ri
;
1812 struct bgp_node
*rn
= NULL
; /* rn in esi table */
1813 struct bgp_node
*global_rn
= NULL
; /* rn in global table */
1815 /* First, locate the route node within the ESI.
1816 * If it doesn't exist, ther is nothing to do.
1817 * Note: there is no RD here.
1819 rn
= bgp_node_lookup(es
->route_table
, (struct prefix
*)p
);
1823 /* Next, locate route node in the global EVPN routing table.
1824 * Note that this table is a 2-level tree (RD-level + Prefix-level)
1826 global_rn
= bgp_afi_node_lookup(bgp
->rib
[afi
][safi
], afi
, safi
,
1827 (struct prefix
*)p
, &es
->prd
);
1830 /* Delete route entry in the global EVPN table. */
1831 delete_evpn_route_entry(bgp
, afi
, safi
,
1834 /* Schedule for processing - withdraws to peers happen from
1838 bgp_process(bgp
, global_rn
, afi
, safi
);
1839 bgp_unlock_node(global_rn
);
1843 * Delete route entry in the ESI route table.
1844 * This can just be removed.
1846 delete_evpn_route_entry(bgp
, afi
, safi
, rn
, &ri
);
1848 bgp_info_reap(rn
, ri
);
1849 bgp_unlock_node(rn
);
1853 /* Delete EVPN type5 route */
1854 static int delete_evpn_type5_route(struct bgp
*bgp_vrf
, struct prefix_evpn
*evp
)
1856 afi_t afi
= AFI_L2VPN
;
1857 safi_t safi
= SAFI_EVPN
;
1858 struct bgp_node
*rn
= NULL
;
1859 struct bgp_path_info
*ri
= NULL
;
1860 struct bgp
*bgp_def
= NULL
; /* default bgp instance */
1862 bgp_def
= bgp_get_default();
1866 /* locate the global route entry for this type-5 prefix */
1867 rn
= bgp_afi_node_lookup(bgp_def
->rib
[afi
][safi
], afi
, safi
,
1868 (struct prefix
*)evp
, &bgp_vrf
->vrf_prd
);
1872 delete_evpn_route_entry(bgp_def
, afi
, safi
, rn
, &ri
);
1874 bgp_process(bgp_def
, rn
, afi
, safi
);
1875 bgp_unlock_node(rn
);
1880 * Delete EVPN route (of type based on prefix) for specified VNI and
1881 * schedule for processing.
1883 static int delete_evpn_route(struct bgp
*bgp
, struct bgpevpn
*vpn
,
1884 struct prefix_evpn
*p
)
1886 struct bgp_node
*rn
, *global_rn
;
1887 struct bgp_path_info
*ri
;
1888 afi_t afi
= AFI_L2VPN
;
1889 safi_t safi
= SAFI_EVPN
;
1891 /* First, locate the route node within the VNI. If it doesn't exist,
1893 * is nothing further to do.
1895 /* NOTE: There is no RD here. */
1896 rn
= bgp_node_lookup(vpn
->route_table
, (struct prefix
*)p
);
1900 /* Next, locate route node in the global EVPN routing table. Note that
1901 * this table is a 2-level tree (RD-level + Prefix-level) similar to
1904 global_rn
= bgp_afi_node_lookup(bgp
->rib
[afi
][safi
], afi
, safi
,
1905 (struct prefix
*)p
, &vpn
->prd
);
1907 /* Delete route entry in the global EVPN table. */
1908 delete_evpn_route_entry(bgp
, afi
, safi
, global_rn
, &ri
);
1910 /* Schedule for processing - withdraws to peers happen from
1914 bgp_process(bgp
, global_rn
, afi
, safi
);
1915 bgp_unlock_node(global_rn
);
1918 /* Delete route entry in the VNI route table. This can just be removed.
1920 delete_evpn_route_entry(bgp
, afi
, safi
, rn
, &ri
);
1922 bgp_info_reap(rn
, ri
);
1923 bgp_unlock_node(rn
);
1929 * Update all type-2 (MACIP) local routes for this VNI - these should also
1930 * be scheduled for advertise to peers.
1932 static int update_all_type2_routes(struct bgp
*bgp
, struct bgpevpn
*vpn
)
1936 struct bgp_node
*rn
;
1937 struct bgp_path_info
*ri
, *tmp_ri
;
1939 struct attr
*attr_new
;
1941 int add_l3_ecomm
= 0;
1946 /* Walk this VNI's route table and update local type-2 routes. For any
1947 * routes updated, update corresponding entry in the global table too.
1949 for (rn
= bgp_table_top(vpn
->route_table
); rn
;
1950 rn
= bgp_route_next(rn
)) {
1951 struct prefix_evpn
*evp
= (struct prefix_evpn
*)&rn
->p
;
1952 struct bgp_node
*rd_rn
;
1953 struct bgp_path_info
*global_ri
;
1955 if (evp
->prefix
.route_type
!= BGP_EVPN_MAC_IP_ROUTE
)
1958 /* Identify local route. */
1959 for (tmp_ri
= rn
->info
; tmp_ri
; tmp_ri
= tmp_ri
->next
) {
1960 if (tmp_ri
->peer
== bgp
->peer_self
1961 && tmp_ri
->type
== ZEBRA_ROUTE_BGP
1962 && tmp_ri
->sub_type
== BGP_ROUTE_STATIC
)
1970 * Build attribute per local route as the MAC mobility and
1971 * some other values could differ for different routes. The
1972 * attributes will be shared in the hash table.
1974 bgp_attr_default_set(&attr
, BGP_ORIGIN_IGP
);
1975 attr
.nexthop
= vpn
->originator_ip
;
1976 attr
.mp_nexthop_global_in
= vpn
->originator_ip
;
1977 attr
.mp_nexthop_len
= BGP_ATTR_NHLEN_IPV4
;
1978 bgpevpn_get_rmac(vpn
, &attr
.rmac
);
1980 if (evpn_route_is_sticky(bgp
, rn
))
1982 else if (evpn_route_is_def_gw(bgp
, rn
)) {
1983 attr
.default_gw
= 1;
1984 if (is_evpn_prefix_ipaddr_v6(evp
))
1985 attr
.router_flag
= 1;
1988 /* Add L3 VNI RTs and RMAC for non IPv6 link-local if
1989 * using L3 VNI for type-2 routes also.
1991 if ((is_evpn_prefix_ipaddr_v4(evp
) ||
1992 !IN6_IS_ADDR_LINKLOCAL(
1993 &evp
->prefix
.macip_addr
.ip
.ipaddr_v6
)) &&
1994 CHECK_FLAG(vpn
->flags
, VNI_FLAG_USE_TWO_LABELS
) &&
1995 bgpevpn_get_l3vni(vpn
))
1998 /* Set up extended community. */
1999 build_evpn_route_extcomm(vpn
, &attr
, add_l3_ecomm
);
2001 seq
= mac_mobility_seqnum(tmp_ri
->attr
);
2003 /* Update the route entry. */
2004 update_evpn_route_entry(bgp
, vpn
, afi
, safi
, rn
,
2005 &attr
, 0, &ri
, 0, seq
);
2007 /* Perform route selection; this is just to set the flags
2008 * correctly as local route in the VNI always wins.
2010 evpn_route_select_install(bgp
, vpn
, rn
);
2012 attr_new
= ri
->attr
;
2014 /* Update route in global routing table. */
2015 rd_rn
= bgp_afi_node_get(bgp
->rib
[afi
][safi
], afi
, safi
,
2016 (struct prefix
*)evp
, &vpn
->prd
);
2018 update_evpn_route_entry(bgp
, vpn
, afi
, safi
, rd_rn
, attr_new
, 0,
2020 mac_mobility_seqnum(attr_new
));
2022 /* Schedule for processing and unlock node. */
2023 bgp_process(bgp
, rd_rn
, afi
, safi
);
2024 bgp_unlock_node(rd_rn
);
2026 /* Unintern temporary. */
2027 aspath_unintern(&attr
.aspath
);
2035 * Delete all type-2 (MACIP) local routes for this VNI - only from the
2036 * global routing table. These are also scheduled for withdraw from peers.
2038 static int delete_global_type2_routes(struct bgp
*bgp
, struct bgpevpn
*vpn
)
2042 struct bgp_node
*rdrn
, *rn
;
2043 struct bgp_table
*table
;
2044 struct bgp_path_info
*ri
;
2049 rdrn
= bgp_node_lookup(bgp
->rib
[afi
][safi
], (struct prefix
*)&vpn
->prd
);
2050 if (rdrn
&& rdrn
->info
) {
2051 table
= (struct bgp_table
*)rdrn
->info
;
2052 for (rn
= bgp_table_top(table
); rn
; rn
= bgp_route_next(rn
)) {
2053 struct prefix_evpn
*evp
= (struct prefix_evpn
*)&rn
->p
;
2055 if (evp
->prefix
.route_type
!= BGP_EVPN_MAC_IP_ROUTE
)
2058 delete_evpn_route_entry(bgp
, afi
, safi
, rn
, &ri
);
2060 bgp_process(bgp
, rn
, afi
, safi
);
2064 /* Unlock RD node. */
2066 bgp_unlock_node(rdrn
);
2072 * Delete all type-2 (MACIP) local routes for this VNI - from the global
2073 * table as well as the per-VNI route table.
2075 static int delete_all_type2_routes(struct bgp
*bgp
, struct bgpevpn
*vpn
)
2079 struct bgp_node
*rn
;
2080 struct bgp_path_info
*ri
;
2085 /* First, walk the global route table for this VNI's type-2 local
2087 * EVPN routes are a 2-level table, first get the RD table.
2089 delete_global_type2_routes(bgp
, vpn
);
2091 /* Next, walk this VNI's route table and delete local type-2 routes. */
2092 for (rn
= bgp_table_top(vpn
->route_table
); rn
;
2093 rn
= bgp_route_next(rn
)) {
2094 struct prefix_evpn
*evp
= (struct prefix_evpn
*)&rn
->p
;
2096 if (evp
->prefix
.route_type
!= BGP_EVPN_MAC_IP_ROUTE
)
2099 delete_evpn_route_entry(bgp
, afi
, safi
, rn
, &ri
);
2101 /* Route entry in local table gets deleted immediately. */
2103 bgp_info_reap(rn
, ri
);
2110 * Delete all routes in per ES route-table
2112 static int delete_all_es_routes(struct bgp
*bgp
, struct evpnes
*es
)
2114 struct bgp_node
*rn
;
2115 struct bgp_path_info
*ri
, *nextri
;
2117 /* Walk this ES's route table and delete all routes. */
2118 for (rn
= bgp_table_top(es
->route_table
); rn
;
2119 rn
= bgp_route_next(rn
)) {
2120 for (ri
= rn
->info
; (ri
!= NULL
) && (nextri
= ri
->next
, 1);
2122 bgp_info_delete(rn
, ri
);
2123 bgp_info_reap(rn
, ri
);
2131 * Delete all routes in the per-VNI route table.
2133 static int delete_all_vni_routes(struct bgp
*bgp
, struct bgpevpn
*vpn
)
2135 struct bgp_node
*rn
;
2136 struct bgp_path_info
*ri
, *nextri
;
2138 /* Walk this VNI's route table and delete all routes. */
2139 for (rn
= bgp_table_top(vpn
->route_table
); rn
;
2140 rn
= bgp_route_next(rn
)) {
2141 for (ri
= rn
->info
; (ri
!= NULL
) && (nextri
= ri
->next
, 1);
2143 bgp_info_delete(rn
, ri
);
2144 bgp_info_reap(rn
, ri
);
2152 * Update (and advertise) local routes for a VNI. Invoked upon the VNI
2153 * export RT getting modified or change to tunnel IP. Note that these
2154 * situations need the route in the per-VNI table as well as the global
2155 * table to be updated (as attributes change).
2157 static int update_routes_for_vni(struct bgp
*bgp
, struct bgpevpn
*vpn
)
2160 struct prefix_evpn p
;
2162 /* Update and advertise the type-3 route (only one) followed by the
2163 * locally learnt type-2 routes (MACIP) - for this VNI.
2165 build_evpn_type3_prefix(&p
, vpn
->originator_ip
);
2166 ret
= update_evpn_route(bgp
, vpn
, &p
, 0, 0);
2170 return update_all_type2_routes(bgp
, vpn
);
2173 /* Delete (and withdraw) local routes for specified ES from global and ES table.
2174 * Also remove all other routes from the per ES table.
2175 * Invoked when ES is deleted.
2177 static int delete_routes_for_es(struct bgp
*bgp
, struct evpnes
*es
)
2180 char buf
[ESI_STR_LEN
];
2181 struct prefix_evpn p
;
2183 /* Delete and withdraw locally learnt ES route */
2184 build_evpn_type4_prefix(&p
, &es
->esi
, es
->originator_ip
.ipaddr_v4
);
2185 ret
= delete_evpn_type4_route(bgp
, es
, &p
);
2187 flog_err(EC_BGP_EVPN_ROUTE_DELETE
,
2188 "%u failed to delete type-4 route for ESI %s",
2189 bgp
->vrf_id
, esi_to_str(&es
->esi
, buf
, sizeof(buf
)));
2192 /* Delete all routes from per ES table */
2193 return delete_all_es_routes(bgp
, es
);
2197 * Delete (and withdraw) local routes for specified VNI from the global
2198 * table and per-VNI table. After this, remove all other routes from
2199 * the per-VNI table. Invoked upon the VNI being deleted or EVPN
2200 * (advertise-all-vni) being disabled.
2202 static int delete_routes_for_vni(struct bgp
*bgp
, struct bgpevpn
*vpn
)
2205 struct prefix_evpn p
;
2207 /* Delete and withdraw locally learnt type-2 routes (MACIP)
2208 * followed by type-3 routes (only one) - for this VNI.
2210 ret
= delete_all_type2_routes(bgp
, vpn
);
2214 build_evpn_type3_prefix(&p
, vpn
->originator_ip
);
2215 ret
= delete_evpn_route(bgp
, vpn
, &p
);
2219 /* Delete all routes from the per-VNI table. */
2220 return delete_all_vni_routes(bgp
, vpn
);
2224 * There is a tunnel endpoint IP address change for this VNI, delete
2225 * prior type-3 route (if needed) and update.
2226 * Note: Route re-advertisement happens elsewhere after other processing
2229 static int handle_tunnel_ip_change(struct bgp
*bgp
, struct bgpevpn
*vpn
,
2230 struct in_addr originator_ip
)
2232 struct prefix_evpn p
;
2234 /* If VNI is not live, we only need to update the originator ip */
2235 if (!is_vni_live(vpn
)) {
2236 vpn
->originator_ip
= originator_ip
;
2240 /* Update the tunnel-ip hash */
2241 bgp_tip_del(bgp
, &vpn
->originator_ip
);
2242 bgp_tip_add(bgp
, &originator_ip
);
2244 /* filter routes as martian nexthop db has changed */
2245 bgp_filter_evpn_routes_upon_martian_nh_change(bgp
);
2247 /* Need to withdraw type-3 route as the originator IP is part
2250 build_evpn_type3_prefix(&p
, vpn
->originator_ip
);
2251 delete_evpn_route(bgp
, vpn
, &p
);
2253 /* Update the tunnel IP and re-advertise all routes for this VNI. */
2254 vpn
->originator_ip
= originator_ip
;
2258 /* Install EVPN route entry in ES */
2259 static int install_evpn_route_entry_in_es(struct bgp
*bgp
, struct evpnes
*es
,
2260 struct prefix_evpn
*p
,
2261 struct bgp_path_info
*parent_ri
)
2264 struct bgp_node
*rn
= NULL
;
2265 struct bgp_path_info
*ri
= NULL
;
2266 struct attr
*attr_new
= NULL
;
2268 /* Create (or fetch) route within the VNI.
2269 * NOTE: There is no RD here.
2271 rn
= bgp_node_get(es
->route_table
, (struct prefix
*)p
);
2273 /* Check if route entry is already present. */
2274 for (ri
= rn
->info
; ri
; ri
= ri
->next
)
2276 && (struct bgp_path_info
*)ri
->extra
->parent
== parent_ri
)
2280 /* Add (or update) attribute to hash. */
2281 attr_new
= bgp_attr_intern(parent_ri
->attr
);
2283 /* Create new route with its attribute. */
2284 ri
= info_make(parent_ri
->type
, BGP_ROUTE_IMPORTED
, 0,
2285 parent_ri
->peer
, attr_new
, rn
);
2286 SET_FLAG(ri
->flags
, BGP_PATH_VALID
);
2287 bgp_info_extra_get(ri
);
2288 ri
->extra
->parent
= parent_ri
;
2289 bgp_info_add(rn
, ri
);
2291 if (attrhash_cmp(ri
->attr
, parent_ri
->attr
)
2292 && !CHECK_FLAG(ri
->flags
, BGP_PATH_REMOVED
)) {
2293 bgp_unlock_node(rn
);
2296 /* The attribute has changed. */
2297 /* Add (or update) attribute to hash. */
2298 attr_new
= bgp_attr_intern(parent_ri
->attr
);
2300 /* Restore route, if needed. */
2301 if (CHECK_FLAG(ri
->flags
, BGP_PATH_REMOVED
))
2302 bgp_info_restore(rn
, ri
);
2304 /* Mark if nexthop has changed. */
2305 if (!IPV4_ADDR_SAME(&ri
->attr
->nexthop
, &attr_new
->nexthop
))
2306 SET_FLAG(ri
->flags
, BGP_PATH_IGP_CHANGED
);
2308 /* Unintern existing, set to new. */
2309 bgp_attr_unintern(&ri
->attr
);
2310 ri
->attr
= attr_new
;
2311 ri
->uptime
= bgp_clock();
2314 /* Perform route selection and update zebra, if required. */
2315 ret
= evpn_es_route_select_install(bgp
, es
, rn
);
2320 * Install route entry into the VRF routing table and invoke route selection.
2322 static int install_evpn_route_entry_in_vrf(struct bgp
*bgp_vrf
,
2323 struct prefix_evpn
*evp
,
2324 struct bgp_path_info
*parent_ri
)
2326 struct bgp_node
*rn
;
2327 struct bgp_path_info
*ri
;
2329 struct attr
*attr_new
;
2332 struct prefix
*pp
= &p
;
2335 char buf
[PREFIX_STRLEN
];
2336 char buf1
[PREFIX_STRLEN
];
2338 memset(pp
, 0, sizeof(struct prefix
));
2339 ip_prefix_from_evpn_prefix(evp
, pp
);
2341 if (bgp_debug_zebra(NULL
)) {
2343 "installing evpn prefix %s as ip prefix %s in vrf %s",
2344 prefix2str(evp
, buf
, sizeof(buf
)),
2345 prefix2str(pp
, buf1
, sizeof(buf
)),
2346 vrf_id_to_name(bgp_vrf
->vrf_id
));
2349 /* Create (or fetch) route within the VRF. */
2350 /* NOTE: There is no RD here. */
2351 if (is_evpn_prefix_ipaddr_v4(evp
)) {
2353 safi
= SAFI_UNICAST
;
2354 rn
= bgp_node_get(bgp_vrf
->rib
[afi
][safi
], pp
);
2355 } else if (is_evpn_prefix_ipaddr_v6(evp
)) {
2357 safi
= SAFI_UNICAST
;
2358 rn
= bgp_node_get(bgp_vrf
->rib
[afi
][safi
], pp
);
2362 /* EVPN routes currently only support a IPv4 next hop which corresponds
2363 * to the remote VTEP. When importing into a VRF, if it is IPv6 host
2364 * or prefix route, we have to convert the next hop to an IPv4-mapped
2365 * address for the rest of the code to flow through. In the case of IPv4,
2366 * make sure to set the flag for next hop attribute.
2368 bgp_attr_dup(&attr
, parent_ri
->attr
);
2370 evpn_convert_nexthop_to_ipv6(&attr
);
2372 attr
.flag
|= ATTR_FLAG_BIT(BGP_ATTR_NEXT_HOP
);
2374 /* Check if route entry is already present. */
2375 for (ri
= rn
->info
; ri
; ri
= ri
->next
)
2377 && (struct bgp_path_info
*)ri
->extra
->parent
== parent_ri
)
2381 /* Add (or update) attribute to hash. */
2382 attr_new
= bgp_attr_intern(&attr
);
2384 /* Create new route with its attribute. */
2385 ri
= info_make(parent_ri
->type
, BGP_ROUTE_IMPORTED
, 0,
2386 parent_ri
->peer
, attr_new
, rn
);
2387 SET_FLAG(ri
->flags
, BGP_PATH_VALID
);
2388 bgp_info_extra_get(ri
);
2389 ri
->extra
->parent
= bgp_info_lock(parent_ri
);
2390 bgp_lock_node((struct bgp_node
*)parent_ri
->net
);
2391 if (parent_ri
->extra
) {
2392 memcpy(&ri
->extra
->label
, &parent_ri
->extra
->label
,
2393 sizeof(ri
->extra
->label
));
2394 ri
->extra
->num_labels
= parent_ri
->extra
->num_labels
;
2396 bgp_info_add(rn
, ri
);
2398 if (attrhash_cmp(ri
->attr
, &attr
)
2399 && !CHECK_FLAG(ri
->flags
, BGP_PATH_REMOVED
)) {
2400 bgp_unlock_node(rn
);
2403 /* The attribute has changed. */
2404 /* Add (or update) attribute to hash. */
2405 attr_new
= bgp_attr_intern(&attr
);
2407 /* Restore route, if needed. */
2408 if (CHECK_FLAG(ri
->flags
, BGP_PATH_REMOVED
))
2409 bgp_info_restore(rn
, ri
);
2411 /* Mark if nexthop has changed. */
2412 if ((afi
== AFI_IP
&&
2413 !IPV4_ADDR_SAME(&ri
->attr
->nexthop
, &attr_new
->nexthop
)) ||
2415 !IPV6_ADDR_SAME(&ri
->attr
->mp_nexthop_global
,
2416 &attr_new
->mp_nexthop_global
)))
2417 SET_FLAG(ri
->flags
, BGP_PATH_IGP_CHANGED
);
2419 /* Unintern existing, set to new. */
2420 bgp_attr_unintern(&ri
->attr
);
2421 ri
->attr
= attr_new
;
2422 ri
->uptime
= bgp_clock();
2425 bgp_aggregate_increment(bgp_vrf
, &rn
->p
, ri
, afi
, safi
);
2427 /* Perform route selection and update zebra, if required. */
2428 bgp_process(bgp_vrf
, rn
, afi
, safi
);
2434 * Install route entry into the VNI routing table and invoke route selection.
2436 static int install_evpn_route_entry(struct bgp
*bgp
, struct bgpevpn
*vpn
,
2437 struct prefix_evpn
*p
,
2438 struct bgp_path_info
*parent_ri
)
2440 struct bgp_node
*rn
;
2441 struct bgp_path_info
*ri
;
2442 struct attr
*attr_new
;
2445 /* Create (or fetch) route within the VNI. */
2446 /* NOTE: There is no RD here. */
2447 rn
= bgp_node_get(vpn
->route_table
, (struct prefix
*)p
);
2449 /* Check if route entry is already present. */
2450 for (ri
= rn
->info
; ri
; ri
= ri
->next
)
2452 && (struct bgp_path_info
*)ri
->extra
->parent
== parent_ri
)
2456 /* Add (or update) attribute to hash. */
2457 attr_new
= bgp_attr_intern(parent_ri
->attr
);
2459 /* Create new route with its attribute. */
2460 ri
= info_make(parent_ri
->type
, BGP_ROUTE_IMPORTED
, 0,
2461 parent_ri
->peer
, attr_new
, rn
);
2462 SET_FLAG(ri
->flags
, BGP_PATH_VALID
);
2463 bgp_info_extra_get(ri
);
2464 ri
->extra
->parent
= bgp_info_lock(parent_ri
);
2465 bgp_lock_node((struct bgp_node
*)parent_ri
->net
);
2466 if (parent_ri
->extra
) {
2467 memcpy(&ri
->extra
->label
, &parent_ri
->extra
->label
,
2468 sizeof(ri
->extra
->label
));
2469 ri
->extra
->num_labels
= parent_ri
->extra
->num_labels
;
2471 bgp_info_add(rn
, ri
);
2473 if (attrhash_cmp(ri
->attr
, parent_ri
->attr
)
2474 && !CHECK_FLAG(ri
->flags
, BGP_PATH_REMOVED
)) {
2475 bgp_unlock_node(rn
);
2478 /* The attribute has changed. */
2479 /* Add (or update) attribute to hash. */
2480 attr_new
= bgp_attr_intern(parent_ri
->attr
);
2482 /* Restore route, if needed. */
2483 if (CHECK_FLAG(ri
->flags
, BGP_PATH_REMOVED
))
2484 bgp_info_restore(rn
, ri
);
2486 /* Mark if nexthop has changed. */
2487 if (!IPV4_ADDR_SAME(&ri
->attr
->nexthop
, &attr_new
->nexthop
))
2488 SET_FLAG(ri
->flags
, BGP_PATH_IGP_CHANGED
);
2490 /* Unintern existing, set to new. */
2491 bgp_attr_unintern(&ri
->attr
);
2492 ri
->attr
= attr_new
;
2493 ri
->uptime
= bgp_clock();
2496 /* Perform route selection and update zebra, if required. */
2497 ret
= evpn_route_select_install(bgp
, vpn
, rn
);
2502 /* Uninstall EVPN route entry from ES route table */
2503 static int uninstall_evpn_route_entry_in_es(struct bgp
*bgp
, struct evpnes
*es
,
2504 struct prefix_evpn
*p
,
2505 struct bgp_path_info
*parent_ri
)
2508 struct bgp_node
*rn
;
2509 struct bgp_path_info
*ri
;
2511 if (!es
->route_table
)
2514 /* Locate route within the ESI.
2515 * NOTE: There is no RD here.
2517 rn
= bgp_node_lookup(es
->route_table
, (struct prefix
*)p
);
2521 /* Find matching route entry. */
2522 for (ri
= rn
->info
; ri
; ri
= ri
->next
)
2524 && (struct bgp_path_info
*)ri
->extra
->parent
== parent_ri
)
2530 /* Mark entry for deletion */
2531 bgp_info_delete(rn
, ri
);
2533 /* Perform route selection and update zebra, if required. */
2534 ret
= evpn_es_route_select_install(bgp
, es
, rn
);
2536 /* Unlock route node. */
2537 bgp_unlock_node(rn
);
2543 * Uninstall route entry from the VRF routing table and send message
2544 * to zebra, if appropriate.
2546 static int uninstall_evpn_route_entry_in_vrf(struct bgp
*bgp_vrf
,
2547 struct prefix_evpn
*evp
,
2548 struct bgp_path_info
*parent_ri
)
2550 struct bgp_node
*rn
;
2551 struct bgp_path_info
*ri
;
2554 struct prefix
*pp
= &p
;
2557 char buf
[PREFIX_STRLEN
];
2558 char buf1
[PREFIX_STRLEN
];
2560 memset(pp
, 0, sizeof(struct prefix
));
2561 ip_prefix_from_evpn_prefix(evp
, pp
);
2563 if (bgp_debug_zebra(NULL
)) {
2565 "uninstalling evpn prefix %s as ip prefix %s in vrf %s",
2566 prefix2str(evp
, buf
, sizeof(buf
)),
2567 prefix2str(pp
, buf1
, sizeof(buf
)),
2568 vrf_id_to_name(bgp_vrf
->vrf_id
));
2571 /* Locate route within the VRF. */
2572 /* NOTE: There is no RD here. */
2573 if (is_evpn_prefix_ipaddr_v4(evp
)) {
2575 safi
= SAFI_UNICAST
;
2576 rn
= bgp_node_lookup(bgp_vrf
->rib
[afi
][safi
], pp
);
2579 safi
= SAFI_UNICAST
;
2580 rn
= bgp_node_lookup(bgp_vrf
->rib
[afi
][safi
], pp
);
2586 /* Find matching route entry. */
2587 for (ri
= rn
->info
; ri
; ri
= ri
->next
)
2589 && (struct bgp_path_info
*)ri
->extra
->parent
== parent_ri
)
2595 bgp_aggregate_decrement(bgp_vrf
, &rn
->p
, ri
, afi
, safi
);
2597 /* Mark entry for deletion */
2598 bgp_info_delete(rn
, ri
);
2600 /* Perform route selection and update zebra, if required. */
2601 bgp_process(bgp_vrf
, rn
, afi
, safi
);
2603 /* Unlock route node. */
2604 bgp_unlock_node(rn
);
2610 * Uninstall route entry from the VNI routing table and send message
2611 * to zebra, if appropriate.
2613 static int uninstall_evpn_route_entry(struct bgp
*bgp
, struct bgpevpn
*vpn
,
2614 struct prefix_evpn
*p
,
2615 struct bgp_path_info
*parent_ri
)
2617 struct bgp_node
*rn
;
2618 struct bgp_path_info
*ri
;
2621 /* Locate route within the VNI. */
2622 /* NOTE: There is no RD here. */
2623 rn
= bgp_node_lookup(vpn
->route_table
, (struct prefix
*)p
);
2627 /* Find matching route entry. */
2628 for (ri
= rn
->info
; ri
; ri
= ri
->next
)
2630 && (struct bgp_path_info
*)ri
->extra
->parent
== parent_ri
)
2636 /* Mark entry for deletion */
2637 bgp_info_delete(rn
, ri
);
2639 /* Perform route selection and update zebra, if required. */
2640 ret
= evpn_route_select_install(bgp
, vpn
, rn
);
2642 /* Unlock route node. */
2643 bgp_unlock_node(rn
);
2649 * Given a prefix, see if it belongs to ES.
2651 static int is_prefix_matching_for_es(struct prefix_evpn
*p
,
2654 /* if not an ES route return false */
2655 if (p
->prefix
.route_type
!= BGP_EVPN_ES_ROUTE
)
2658 if (memcmp(&p
->prefix
.es_addr
.esi
, &es
->esi
, sizeof(esi_t
)) == 0)
2665 * Given a route entry and a VRF, see if this route entry should be
2666 * imported into the VRF i.e., RTs match.
2668 static int is_route_matching_for_vrf(struct bgp
*bgp_vrf
,
2669 struct bgp_path_info
*ri
)
2671 struct attr
*attr
= ri
->attr
;
2672 struct ecommunity
*ecom
;
2676 /* Route should have valid RT to be even considered. */
2677 if (!(attr
->flag
& ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES
)))
2680 ecom
= attr
->ecommunity
;
2681 if (!ecom
|| !ecom
->size
)
2684 /* For each extended community RT, see if it matches this VNI. If any RT
2685 * matches, we're done.
2687 for (i
= 0; i
< ecom
->size
; i
++) {
2689 uint8_t type
, sub_type
;
2690 struct ecommunity_val
*eval
;
2691 struct ecommunity_val eval_tmp
;
2692 struct vrf_irt_node
*irt
;
2694 /* Only deal with RTs */
2695 pnt
= (ecom
->val
+ (i
* ECOMMUNITY_SIZE
));
2696 eval
= (struct ecommunity_val
*)(ecom
->val
2697 + (i
* ECOMMUNITY_SIZE
));
2700 if (sub_type
!= ECOMMUNITY_ROUTE_TARGET
)
2703 /* See if this RT matches specified VNIs import RTs */
2704 irt
= lookup_vrf_import_rt(eval
);
2706 if (is_vrf_present_in_irt_vrfs(irt
->vrfs
, bgp_vrf
))
2709 /* Also check for non-exact match. In this, we mask out the AS
2711 * only check on the local-admin sub-field. This is to
2713 * VNI as the RT for EBGP peering too.
2716 if (type
== ECOMMUNITY_ENCODE_AS
2717 || type
== ECOMMUNITY_ENCODE_AS4
2718 || type
== ECOMMUNITY_ENCODE_IP
) {
2719 memcpy(&eval_tmp
, eval
, ECOMMUNITY_SIZE
);
2720 mask_ecom_global_admin(&eval_tmp
, eval
);
2721 irt
= lookup_vrf_import_rt(&eval_tmp
);
2724 if (is_vrf_present_in_irt_vrfs(irt
->vrfs
, bgp_vrf
))
2732 * Given a route entry and a VNI, see if this route entry should be
2733 * imported into the VNI i.e., RTs match.
2735 static int is_route_matching_for_vni(struct bgp
*bgp
, struct bgpevpn
*vpn
,
2736 struct bgp_path_info
*ri
)
2738 struct attr
*attr
= ri
->attr
;
2739 struct ecommunity
*ecom
;
2743 /* Route should have valid RT to be even considered. */
2744 if (!(attr
->flag
& ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES
)))
2747 ecom
= attr
->ecommunity
;
2748 if (!ecom
|| !ecom
->size
)
2751 /* For each extended community RT, see if it matches this VNI. If any RT
2752 * matches, we're done.
2754 for (i
= 0; i
< ecom
->size
; i
++) {
2756 uint8_t type
, sub_type
;
2757 struct ecommunity_val
*eval
;
2758 struct ecommunity_val eval_tmp
;
2759 struct irt_node
*irt
;
2761 /* Only deal with RTs */
2762 pnt
= (ecom
->val
+ (i
* ECOMMUNITY_SIZE
));
2763 eval
= (struct ecommunity_val
*)(ecom
->val
2764 + (i
* ECOMMUNITY_SIZE
));
2767 if (sub_type
!= ECOMMUNITY_ROUTE_TARGET
)
2770 /* See if this RT matches specified VNIs import RTs */
2771 irt
= lookup_import_rt(bgp
, eval
);
2773 if (is_vni_present_in_irt_vnis(irt
->vnis
, vpn
))
2776 /* Also check for non-exact match. In this, we mask out the AS
2778 * only check on the local-admin sub-field. This is to
2780 * VNI as the RT for EBGP peering too.
2783 if (type
== ECOMMUNITY_ENCODE_AS
2784 || type
== ECOMMUNITY_ENCODE_AS4
2785 || type
== ECOMMUNITY_ENCODE_IP
) {
2786 memcpy(&eval_tmp
, eval
, ECOMMUNITY_SIZE
);
2787 mask_ecom_global_admin(&eval_tmp
, eval
);
2788 irt
= lookup_import_rt(bgp
, &eval_tmp
);
2791 if (is_vni_present_in_irt_vnis(irt
->vnis
, vpn
))
2798 static int install_uninstall_routes_for_es(struct bgp
*bgp
,
2805 char buf
[PREFIX_STRLEN
];
2806 char buf1
[ESI_STR_LEN
];
2807 struct bgp_node
*rd_rn
, *rn
;
2808 struct bgp_table
*table
;
2809 struct bgp_path_info
*ri
;
2815 * Walk entire global routing table and evaluate routes which could be
2816 * imported into this VRF. Note that we need to loop through all global
2817 * routes to determine which route matches the import rt on vrf
2819 for (rd_rn
= bgp_table_top(bgp
->rib
[afi
][safi
]); rd_rn
;
2820 rd_rn
= bgp_route_next(rd_rn
)) {
2821 table
= (struct bgp_table
*)(rd_rn
->info
);
2825 for (rn
= bgp_table_top(table
); rn
; rn
= bgp_route_next(rn
)) {
2826 struct prefix_evpn
*evp
= (struct prefix_evpn
*)&rn
->p
;
2828 for (ri
= rn
->info
; ri
; ri
= ri
->next
) {
2830 * Consider "valid" remote routes applicable for
2833 if (!(CHECK_FLAG(ri
->flags
, BGP_PATH_VALID
)
2834 && ri
->type
== ZEBRA_ROUTE_BGP
2835 && ri
->sub_type
== BGP_ROUTE_NORMAL
))
2838 if (!is_prefix_matching_for_es(evp
, es
))
2842 ret
= install_evpn_route_entry_in_es(
2845 ret
= uninstall_evpn_route_entry_in_es(
2851 "Failed to %s EVPN %s route in ESI %s",
2854 prefix2str(evp
, buf
,
2856 esi_to_str(&es
->esi
, buf1
,
2867 * Install or uninstall mac-ip routes are appropriate for this
2870 static int install_uninstall_routes_for_vrf(struct bgp
*bgp_vrf
, int install
)
2874 struct bgp_node
*rd_rn
, *rn
;
2875 struct bgp_table
*table
;
2876 struct bgp_path_info
*ri
;
2878 char buf
[PREFIX_STRLEN
];
2879 struct bgp
*bgp_def
= NULL
;
2883 bgp_def
= bgp_get_default();
2887 /* Walk entire global routing table and evaluate routes which could be
2888 * imported into this VRF. Note that we need to loop through all global
2889 * routes to determine which route matches the import rt on vrf
2891 for (rd_rn
= bgp_table_top(bgp_def
->rib
[afi
][safi
]); rd_rn
;
2892 rd_rn
= bgp_route_next(rd_rn
)) {
2893 table
= (struct bgp_table
*)(rd_rn
->info
);
2897 for (rn
= bgp_table_top(table
); rn
; rn
= bgp_route_next(rn
)) {
2898 struct prefix_evpn
*evp
= (struct prefix_evpn
*)&rn
->p
;
2900 /* if not mac-ip route skip this route */
2901 if (!(evp
->prefix
.route_type
== BGP_EVPN_MAC_IP_ROUTE
2902 || evp
->prefix
.route_type
2903 == BGP_EVPN_IP_PREFIX_ROUTE
))
2906 /* if not a mac+ip route skip this route */
2907 if (!(is_evpn_prefix_ipaddr_v4(evp
)
2908 || is_evpn_prefix_ipaddr_v6(evp
)))
2911 for (ri
= rn
->info
; ri
; ri
= ri
->next
) {
2912 /* Consider "valid" remote routes applicable for
2915 if (!(CHECK_FLAG(ri
->flags
, BGP_PATH_VALID
)
2916 && ri
->type
== ZEBRA_ROUTE_BGP
2917 && ri
->sub_type
== BGP_ROUTE_NORMAL
))
2920 if (is_route_matching_for_vrf(bgp_vrf
, ri
)) {
2922 ret
= install_evpn_route_entry_in_vrf(
2925 ret
= uninstall_evpn_route_entry_in_vrf(
2931 "Failed to %s EVPN %s route in VRF %s",
2934 prefix2str(evp
, buf
,
2949 * Install or uninstall routes of specified type that are appropriate for this
2952 static int install_uninstall_routes_for_vni(struct bgp
*bgp
,
2953 struct bgpevpn
*vpn
,
2954 bgp_evpn_route_type rtype
,
2959 struct bgp_node
*rd_rn
, *rn
;
2960 struct bgp_table
*table
;
2961 struct bgp_path_info
*ri
;
2967 /* Walk entire global routing table and evaluate routes which could be
2968 * imported into this VPN. Note that we cannot just look at the routes
2970 * the VNI's RD - remote routes applicable for this VNI could have any
2973 /* EVPN routes are a 2-level table. */
2974 for (rd_rn
= bgp_table_top(bgp
->rib
[afi
][safi
]); rd_rn
;
2975 rd_rn
= bgp_route_next(rd_rn
)) {
2976 table
= (struct bgp_table
*)(rd_rn
->info
);
2980 for (rn
= bgp_table_top(table
); rn
; rn
= bgp_route_next(rn
)) {
2981 struct prefix_evpn
*evp
= (struct prefix_evpn
*)&rn
->p
;
2983 if (evp
->prefix
.route_type
!= rtype
)
2986 for (ri
= rn
->info
; ri
; ri
= ri
->next
) {
2987 /* Consider "valid" remote routes applicable for
2989 if (!(CHECK_FLAG(ri
->flags
, BGP_PATH_VALID
)
2990 && ri
->type
== ZEBRA_ROUTE_BGP
2991 && ri
->sub_type
== BGP_ROUTE_NORMAL
))
2994 if (is_route_matching_for_vni(bgp
, vpn
, ri
)) {
2996 ret
= install_evpn_route_entry(
2999 ret
= uninstall_evpn_route_entry(
3005 "%u: Failed to %s EVPN %s route in VNI %u",
3009 rtype
== BGP_EVPN_MAC_IP_ROUTE
3023 /* Install any existing remote ES routes applicable for this ES into its routing
3024 * table. This is invoked when ES comes up.
3026 static int install_routes_for_es(struct bgp
*bgp
, struct evpnes
*es
)
3028 return install_uninstall_routes_for_es(bgp
, es
, 1);
3032 /* Install any existing remote routes applicable for this VRF into VRF RIB. This
3033 * is invoked upon l3vni-add or l3vni import rt change
3035 static int install_routes_for_vrf(struct bgp
*bgp_vrf
)
3037 install_uninstall_routes_for_vrf(bgp_vrf
, 1);
3042 * Install any existing remote routes applicable for this VNI into its
3043 * routing table. This is invoked when a VNI becomes "live" or its Import
3046 static int install_routes_for_vni(struct bgp
*bgp
, struct bgpevpn
*vpn
)
3050 /* Install type-3 routes followed by type-2 routes - the ones applicable
3053 ret
= install_uninstall_routes_for_vni(bgp
, vpn
, BGP_EVPN_IMET_ROUTE
,
3058 return install_uninstall_routes_for_vni(bgp
, vpn
, BGP_EVPN_MAC_IP_ROUTE
,
3062 /* uninstall routes from l3vni vrf. */
3063 static int uninstall_routes_for_vrf(struct bgp
*bgp_vrf
)
3065 install_uninstall_routes_for_vrf(bgp_vrf
, 0);
3070 * Uninstall any existing remote routes for this VNI. One scenario in which
3071 * this is invoked is upon an import RT change.
3073 static int uninstall_routes_for_vni(struct bgp
*bgp
, struct bgpevpn
*vpn
)
3077 /* Uninstall type-2 routes followed by type-3 routes - the ones
3081 ret
= install_uninstall_routes_for_vni(bgp
, vpn
, BGP_EVPN_MAC_IP_ROUTE
,
3086 return install_uninstall_routes_for_vni(bgp
, vpn
, BGP_EVPN_IMET_ROUTE
,
3090 /* Install or unistall route in ES */
3091 static int install_uninstall_route_in_es(struct bgp
*bgp
, struct evpnes
*es
,
3092 afi_t afi
, safi_t safi
,
3093 struct prefix_evpn
*evp
,
3094 struct bgp_path_info
*ri
, int install
)
3097 char buf
[ESI_STR_LEN
];
3100 ret
= install_evpn_route_entry_in_es(bgp
, es
, evp
, ri
);
3102 ret
= uninstall_evpn_route_entry_in_es(bgp
, es
, evp
, ri
);
3107 "%u: Failed to %s EVPN %s route in ESI %s", bgp
->vrf_id
,
3108 install
? "install" : "uninstall", "ES",
3109 esi_to_str(&evp
->prefix
.es_addr
.esi
, buf
, sizeof(buf
)));
3116 * Install or uninstall route in matching VRFs (list).
3118 static int install_uninstall_route_in_vrfs(struct bgp
*bgp_def
, afi_t afi
,
3119 safi_t safi
, struct prefix_evpn
*evp
,
3120 struct bgp_path_info
*ri
,
3121 struct list
*vrfs
, int install
)
3123 char buf
[PREFIX2STR_BUFFER
];
3124 struct bgp
*bgp_vrf
;
3125 struct listnode
*node
, *nnode
;
3127 /* Only type-2/type-5 routes go into a VRF */
3128 if (!(evp
->prefix
.route_type
== BGP_EVPN_MAC_IP_ROUTE
3129 || evp
->prefix
.route_type
== BGP_EVPN_IP_PREFIX_ROUTE
))
3132 /* if it is type-2 route and not a mac+ip route skip this route */
3133 if ((evp
->prefix
.route_type
== BGP_EVPN_MAC_IP_ROUTE
)
3134 && !(is_evpn_prefix_ipaddr_v4(evp
)
3135 || is_evpn_prefix_ipaddr_v6(evp
)))
3138 for (ALL_LIST_ELEMENTS(vrfs
, node
, nnode
, bgp_vrf
)) {
3142 ret
= install_evpn_route_entry_in_vrf(bgp_vrf
, evp
, ri
);
3144 ret
= uninstall_evpn_route_entry_in_vrf(bgp_vrf
, evp
,
3148 flog_err(EC_BGP_EVPN_FAIL
,
3149 "%u: Failed to %s prefix %s in VRF %s",
3151 install
? "install" : "uninstall",
3152 prefix2str(evp
, buf
, sizeof(buf
)),
3153 vrf_id_to_name(bgp_vrf
->vrf_id
));
3162 * Install or uninstall route in matching VNIs (list).
3164 static int install_uninstall_route_in_vnis(struct bgp
*bgp
, afi_t afi
,
3165 safi_t safi
, struct prefix_evpn
*evp
,
3166 struct bgp_path_info
*ri
,
3167 struct list
*vnis
, int install
)
3169 struct bgpevpn
*vpn
;
3170 struct listnode
*node
, *nnode
;
3172 for (ALL_LIST_ELEMENTS(vnis
, node
, nnode
, vpn
)) {
3175 if (!is_vni_live(vpn
))
3179 ret
= install_evpn_route_entry(bgp
, vpn
, evp
, ri
);
3181 ret
= uninstall_evpn_route_entry(bgp
, vpn
, evp
, ri
);
3184 flog_err(EC_BGP_EVPN_FAIL
,
3185 "%u: Failed to %s EVPN %s route in VNI %u",
3186 bgp
->vrf_id
, install
? "install" : "uninstall",
3187 evp
->prefix
.route_type
== BGP_EVPN_MAC_IP_ROUTE
3199 * Install or uninstall route for appropriate VNIs/ESIs.
3201 static int install_uninstall_evpn_route(struct bgp
*bgp
, afi_t afi
, safi_t safi
,
3203 struct bgp_path_info
*ri
, int import
)
3205 struct prefix_evpn
*evp
= (struct prefix_evpn
*)p
;
3206 struct attr
*attr
= ri
->attr
;
3207 struct ecommunity
*ecom
;
3212 /* Only type-2, type-3, type-4 and type-5 are supported currently */
3213 if (!(evp
->prefix
.route_type
== BGP_EVPN_MAC_IP_ROUTE
3214 || evp
->prefix
.route_type
== BGP_EVPN_IMET_ROUTE
3215 || evp
->prefix
.route_type
== BGP_EVPN_ES_ROUTE
3216 || evp
->prefix
.route_type
== BGP_EVPN_IP_PREFIX_ROUTE
))
3219 /* If we don't have Route Target, nothing much to do. */
3220 if (!(attr
->flag
& ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES
)))
3223 ecom
= attr
->ecommunity
;
3224 if (!ecom
|| !ecom
->size
)
3227 /* An EVPN route belongs to a VNI or a VRF or an ESI based on the RTs
3228 * attached to the route */
3229 for (i
= 0; i
< ecom
->size
; i
++) {
3231 uint8_t type
, sub_type
;
3232 struct ecommunity_val
*eval
;
3233 struct ecommunity_val eval_tmp
;
3234 struct irt_node
*irt
; /* import rt for l2vni */
3235 struct vrf_irt_node
*vrf_irt
; /* import rt for l3vni */
3238 /* Only deal with RTs */
3239 pnt
= (ecom
->val
+ (i
* ECOMMUNITY_SIZE
));
3240 eval
= (struct ecommunity_val
*)(ecom
->val
3241 + (i
* ECOMMUNITY_SIZE
));
3244 if (sub_type
!= ECOMMUNITY_ROUTE_TARGET
)
3248 * macip routes (type-2) are imported into VNI and VRF tables.
3249 * IMET route is imported into VNI table.
3250 * prefix routes are imported into VRF table.
3252 if (evp
->prefix
.route_type
== BGP_EVPN_MAC_IP_ROUTE
||
3253 evp
->prefix
.route_type
== BGP_EVPN_IMET_ROUTE
||
3254 evp
->prefix
.route_type
== BGP_EVPN_IP_PREFIX_ROUTE
) {
3256 irt
= lookup_import_rt(bgp
, eval
);
3258 install_uninstall_route_in_vnis(bgp
, afi
, safi
,
3263 vrf_irt
= lookup_vrf_import_rt(eval
);
3265 install_uninstall_route_in_vrfs(bgp
, afi
, safi
,
3270 /* Also check for non-exact match.
3271 * In this, we mask out the AS and
3272 * only check on the local-admin sub-field.
3273 * This is to facilitate using
3274 * VNI as the RT for EBGP peering too.
3278 if (type
== ECOMMUNITY_ENCODE_AS
3279 || type
== ECOMMUNITY_ENCODE_AS4
3280 || type
== ECOMMUNITY_ENCODE_IP
) {
3281 memcpy(&eval_tmp
, eval
, ECOMMUNITY_SIZE
);
3282 mask_ecom_global_admin(&eval_tmp
, eval
);
3283 irt
= lookup_import_rt(bgp
, &eval_tmp
);
3284 vrf_irt
= lookup_vrf_import_rt(&eval_tmp
);
3288 install_uninstall_route_in_vnis(bgp
, afi
, safi
,
3293 install_uninstall_route_in_vrfs(bgp
, afi
, safi
,
3299 /* es route is imported into the es table */
3300 if (evp
->prefix
.route_type
== BGP_EVPN_ES_ROUTE
) {
3302 /* we will match based on the entire esi to avoid
3303 * imoort of an es route for esi2 into esi1
3305 es
= bgp_evpn_lookup_es(bgp
, &evp
->prefix
.es_addr
.esi
);
3306 if (es
&& is_es_local(es
))
3307 install_uninstall_route_in_es(bgp
, es
,
3317 * delete and withdraw all ipv4 and ipv6 routes in the vrf table as type-5
3320 static void delete_withdraw_vrf_routes(struct bgp
*bgp_vrf
)
3322 /* delete all ipv4 routes and withdraw from peers */
3323 if (advertise_type5_routes(bgp_vrf
, AFI_IP
))
3324 bgp_evpn_withdraw_type5_routes(bgp_vrf
, AFI_IP
, SAFI_UNICAST
);
3326 /* delete all ipv6 routes and withdraw from peers */
3327 if (advertise_type5_routes(bgp_vrf
, AFI_IP6
))
3328 bgp_evpn_withdraw_type5_routes(bgp_vrf
, AFI_IP6
, SAFI_UNICAST
);
3332 * update and advertise all ipv4 and ipv6 routes in thr vrf table as type-5
3335 static void update_advertise_vrf_routes(struct bgp
*bgp_vrf
)
3337 /* update all ipv4 routes */
3338 if (advertise_type5_routes(bgp_vrf
, AFI_IP
))
3339 bgp_evpn_advertise_type5_routes(bgp_vrf
, AFI_IP
, SAFI_UNICAST
);
3341 /* update all ipv6 routes */
3342 if (advertise_type5_routes(bgp_vrf
, AFI_IP6
))
3343 bgp_evpn_advertise_type5_routes(bgp_vrf
, AFI_IP6
, SAFI_UNICAST
);
3347 * update and advertise local routes for a VRF as type-5 routes.
3348 * This is invoked upon RD change for a VRF. Note taht the processing is only
3349 * done in the global route table using the routes which already exist in the
3352 static void update_router_id_vrf(struct bgp
*bgp_vrf
)
3354 /* skip if the RD is configured */
3355 if (is_vrf_rd_configured(bgp_vrf
))
3358 /* derive the RD for the VRF based on new router-id */
3359 bgp_evpn_derive_auto_rd_for_vrf(bgp_vrf
);
3361 /* update advertise ipv4|ipv6 routes as type-5 routes */
3362 update_advertise_vrf_routes(bgp_vrf
);
3366 * Delete and withdraw all type-5 routes for the RD corresponding to VRF.
3367 * This is invoked upon VRF RD change. The processing is done only from global
3370 static void withdraw_router_id_vrf(struct bgp
*bgp_vrf
)
3372 /* skip if the RD is configured */
3373 if (is_vrf_rd_configured(bgp_vrf
))
3376 /* delete/withdraw ipv4|ipv6 routes as type-5 routes */
3377 delete_withdraw_vrf_routes(bgp_vrf
);
3381 * Update and advertise local routes for a VNI. Invoked upon router-id
3382 * change. Note that the processing is done only on the global route table
3383 * using routes that already exist in the per-VNI table.
3385 static int update_advertise_vni_routes(struct bgp
*bgp
, struct bgpevpn
*vpn
)
3387 struct prefix_evpn p
;
3388 struct bgp_node
*rn
, *global_rn
;
3389 struct bgp_path_info
*ri
, *global_ri
;
3391 afi_t afi
= AFI_L2VPN
;
3392 safi_t safi
= SAFI_EVPN
;
3394 /* Locate type-3 route for VNI in the per-VNI table and use its
3395 * attributes to create and advertise the type-3 route for this VNI
3396 * in the global table.
3398 build_evpn_type3_prefix(&p
, vpn
->originator_ip
);
3399 rn
= bgp_node_lookup(vpn
->route_table
, (struct prefix
*)&p
);
3400 if (!rn
) /* unexpected */
3402 for (ri
= rn
->info
; ri
; ri
= ri
->next
)
3403 if (ri
->peer
== bgp
->peer_self
&& ri
->type
== ZEBRA_ROUTE_BGP
3404 && ri
->sub_type
== BGP_ROUTE_STATIC
)
3406 if (!ri
) /* unexpected */
3410 global_rn
= bgp_afi_node_get(bgp
->rib
[afi
][safi
], afi
, safi
,
3411 (struct prefix
*)&p
, &vpn
->prd
);
3412 update_evpn_route_entry(bgp
, vpn
, afi
, safi
, global_rn
, attr
, 1, &ri
,
3413 0, mac_mobility_seqnum(attr
));
3415 /* Schedule for processing and unlock node. */
3416 bgp_process(bgp
, global_rn
, afi
, safi
);
3417 bgp_unlock_node(global_rn
);
3419 /* Now, walk this VNI's route table and use the route and its attribute
3420 * to create and schedule route in global table.
3422 for (rn
= bgp_table_top(vpn
->route_table
); rn
;
3423 rn
= bgp_route_next(rn
)) {
3424 struct prefix_evpn
*evp
= (struct prefix_evpn
*)&rn
->p
;
3426 /* Identify MAC-IP local routes. */
3427 if (evp
->prefix
.route_type
!= BGP_EVPN_MAC_IP_ROUTE
)
3430 for (ri
= rn
->info
; ri
; ri
= ri
->next
)
3431 if (ri
->peer
== bgp
->peer_self
3432 && ri
->type
== ZEBRA_ROUTE_BGP
3433 && ri
->sub_type
== BGP_ROUTE_STATIC
)
3438 /* Create route in global routing table using this route entry's
3442 global_rn
= bgp_afi_node_get(bgp
->rib
[afi
][safi
], afi
, safi
,
3443 (struct prefix
*)evp
, &vpn
->prd
);
3445 update_evpn_route_entry(bgp
, vpn
, afi
, safi
, global_rn
, attr
, 1,
3447 mac_mobility_seqnum(attr
));
3449 /* Schedule for processing and unlock node. */
3450 bgp_process(bgp
, global_rn
, afi
, safi
);
3451 bgp_unlock_node(global_rn
);
3458 * Delete (and withdraw) local routes for a VNI - only from the global
3459 * table. Invoked upon router-id change.
3461 static int delete_withdraw_vni_routes(struct bgp
*bgp
, struct bgpevpn
*vpn
)
3464 struct prefix_evpn p
;
3465 struct bgp_node
*global_rn
;
3466 struct bgp_path_info
*ri
;
3467 afi_t afi
= AFI_L2VPN
;
3468 safi_t safi
= SAFI_EVPN
;
3470 /* Delete and withdraw locally learnt type-2 routes (MACIP)
3471 * for this VNI - from the global table.
3473 ret
= delete_global_type2_routes(bgp
, vpn
);
3477 /* Remove type-3 route for this VNI from global table. */
3478 build_evpn_type3_prefix(&p
, vpn
->originator_ip
);
3479 global_rn
= bgp_afi_node_lookup(bgp
->rib
[afi
][safi
], afi
, safi
,
3480 (struct prefix
*)&p
, &vpn
->prd
);
3482 /* Delete route entry in the global EVPN table. */
3483 delete_evpn_route_entry(bgp
, afi
, safi
, global_rn
, &ri
);
3485 /* Schedule for processing - withdraws to peers happen from
3489 bgp_process(bgp
, global_rn
, afi
, safi
);
3490 bgp_unlock_node(global_rn
);
3497 * Handle router-id change. Update and advertise local routes corresponding
3498 * to this VNI from peers. Note that this is invoked after updating the
3499 * router-id. The routes in the per-VNI table are used to create routes in
3500 * the global table and schedule them.
3502 static void update_router_id_vni(struct hash_backet
*backet
, struct bgp
*bgp
)
3504 struct bgpevpn
*vpn
= (struct bgpevpn
*)backet
->data
;
3506 /* Skip VNIs with configured RD. */
3507 if (is_rd_configured(vpn
))
3510 bgp_evpn_derive_auto_rd(bgp
, vpn
);
3511 update_advertise_vni_routes(bgp
, vpn
);
3515 * Handle router-id change. Delete and withdraw local routes corresponding
3516 * to this VNI from peers. Note that this is invoked prior to updating
3517 * the router-id and is done only on the global route table, the routes
3518 * are needed in the per-VNI table to re-advertise with new router id.
3520 static void withdraw_router_id_vni(struct hash_backet
*backet
, struct bgp
*bgp
)
3522 struct bgpevpn
*vpn
= (struct bgpevpn
*)backet
->data
;
3524 /* Skip VNIs with configured RD. */
3525 if (is_rd_configured(vpn
))
3528 delete_withdraw_vni_routes(bgp
, vpn
);
3532 * Process received EVPN type-2 route (advertise or withdraw).
3534 static int process_type2_route(struct peer
*peer
, afi_t afi
, safi_t safi
,
3535 struct attr
*attr
, uint8_t *pfx
, int psize
,
3536 uint32_t addpath_id
)
3538 struct prefix_rd prd
;
3539 struct prefix_evpn p
;
3540 struct bgp_route_evpn evpn
;
3542 uint8_t macaddr_len
;
3543 mpls_label_t label
[BGP_MAX_LABELS
]; /* holds the VNI(s) as in packet */
3544 uint32_t num_labels
= 0;
3548 /* Type-2 route should be either 33, 37 or 49 bytes or an
3549 * additional 3 bytes if there is a second label (VNI):
3550 * RD (8), ESI (10), Eth Tag (4), MAC Addr Len (1),
3551 * MAC Addr (6), IP len (1), IP (0, 4 or 16),
3552 * MPLS Lbl1 (3), MPLS Lbl2 (0 or 3)
3554 if (psize
!= 33 && psize
!= 37 && psize
!= 49 && psize
!= 36
3555 && psize
!= 40 && psize
!= 52) {
3556 flog_err(EC_BGP_EVPN_ROUTE_INVALID
,
3557 "%u:%s - Rx EVPN Type-2 NLRI with invalid length %d",
3558 peer
->bgp
->vrf_id
, peer
->host
, psize
);
3562 memset(&evpn
, 0, sizeof(evpn
));
3564 /* Make prefix_rd */
3565 prd
.family
= AF_UNSPEC
;
3567 memcpy(&prd
.val
, pfx
, 8);
3570 /* Make EVPN prefix. */
3571 memset(&p
, 0, sizeof(struct prefix_evpn
));
3573 p
.prefixlen
= EVPN_ROUTE_PREFIXLEN
;
3574 p
.prefix
.route_type
= BGP_EVPN_MAC_IP_ROUTE
;
3576 /* Copy Ethernet Seg Identifier */
3577 memcpy(&evpn
.eth_s_id
.val
, pfx
, ESI_LEN
);
3580 /* Copy Ethernet Tag */
3581 memcpy(ð_tag
, pfx
, 4);
3582 p
.prefix
.macip_addr
.eth_tag
= ntohl(eth_tag
);
3585 /* Get the MAC Addr len */
3586 macaddr_len
= *pfx
++;
3588 /* Get the MAC Addr */
3589 if (macaddr_len
== (ETH_ALEN
* 8)) {
3590 memcpy(&p
.prefix
.macip_addr
.mac
.octet
, pfx
, ETH_ALEN
);
3594 EC_BGP_EVPN_ROUTE_INVALID
,
3595 "%u:%s - Rx EVPN Type-2 NLRI with unsupported MAC address length %d",
3596 peer
->bgp
->vrf_id
, peer
->host
, macaddr_len
);
3602 ipaddr_len
= *pfx
++;
3603 if (ipaddr_len
!= 0 && ipaddr_len
!= IPV4_MAX_BITLEN
3604 && ipaddr_len
!= IPV6_MAX_BITLEN
) {
3606 EC_BGP_EVPN_ROUTE_INVALID
,
3607 "%u:%s - Rx EVPN Type-2 NLRI with unsupported IP address length %d",
3608 peer
->bgp
->vrf_id
, peer
->host
, ipaddr_len
);
3613 ipaddr_len
/= 8; /* Convert to bytes. */
3614 p
.prefix
.macip_addr
.ip
.ipa_type
= (ipaddr_len
== IPV4_MAX_BYTELEN
)
3617 memcpy(&p
.prefix
.macip_addr
.ip
.ip
.addr
, pfx
, ipaddr_len
);
3621 /* Get the VNI(s). Stored as bytes here. */
3623 memset(label
, 0, sizeof(label
));
3624 memcpy(&label
[0], pfx
, BGP_LABEL_BYTES
);
3625 pfx
+= BGP_LABEL_BYTES
;
3626 psize
-= (33 + ipaddr_len
);
3627 /* Do we have a second VNI? */
3630 memcpy(&label
[1], pfx
, BGP_LABEL_BYTES
);
3632 * If in future, we are required to access additional fields,
3633 * we MUST increment pfx by BGP_LABEL_BYTES in before reading
3638 /* Process the route. */
3640 ret
= bgp_update(peer
, (struct prefix
*)&p
, addpath_id
, attr
,
3641 afi
, safi
, ZEBRA_ROUTE_BGP
, BGP_ROUTE_NORMAL
,
3642 &prd
, &label
[0], num_labels
, 0, &evpn
);
3644 ret
= bgp_withdraw(peer
, (struct prefix
*)&p
, addpath_id
, attr
,
3645 afi
, safi
, ZEBRA_ROUTE_BGP
, BGP_ROUTE_NORMAL
,
3646 &prd
, &label
[0], num_labels
, &evpn
);
3651 * Process received EVPN type-3 route (advertise or withdraw).
3653 static int process_type3_route(struct peer
*peer
, afi_t afi
, safi_t safi
,
3654 struct attr
*attr
, uint8_t *pfx
, int psize
,
3655 uint32_t addpath_id
)
3657 struct prefix_rd prd
;
3658 struct prefix_evpn p
;
3663 /* Type-3 route should be either 17 or 29 bytes: RD (8), Eth Tag (4),
3664 * IP len (1) and IP (4 or 16).
3666 if (psize
!= 17 && psize
!= 29) {
3667 flog_err(EC_BGP_EVPN_ROUTE_INVALID
,
3668 "%u:%s - Rx EVPN Type-3 NLRI with invalid length %d",
3669 peer
->bgp
->vrf_id
, peer
->host
, psize
);
3673 /* If PMSI is present, log if it is anything other than IR.
3674 * Note: We just simply ignore the values as it is not clear if
3675 * doing anything else is better.
3678 (attr
->flag
& ATTR_FLAG_BIT(BGP_ATTR_PMSI_TUNNEL
))) {
3679 if (attr
->pmsi_tnl_type
!= PMSI_TNLTYPE_INGR_REPL
) {
3681 EC_BGP_EVPN_PMSI_PRESENT
,
3682 "%u:%s - Rx EVPN Type-3 NLRI with unsupported PTA %d",
3683 peer
->bgp
->vrf_id
, peer
->host
,
3684 attr
->pmsi_tnl_type
);
3688 /* Make prefix_rd */
3689 prd
.family
= AF_UNSPEC
;
3691 memcpy(&prd
.val
, pfx
, 8);
3694 /* Make EVPN prefix. */
3695 memset(&p
, 0, sizeof(struct prefix_evpn
));
3697 p
.prefixlen
= EVPN_ROUTE_PREFIXLEN
;
3698 p
.prefix
.route_type
= BGP_EVPN_IMET_ROUTE
;
3700 /* Copy Ethernet Tag */
3701 memcpy(ð_tag
, pfx
, 4);
3702 p
.prefix
.imet_addr
.eth_tag
= ntohl(eth_tag
);
3706 ipaddr_len
= *pfx
++;
3707 if (ipaddr_len
== IPV4_MAX_BITLEN
) {
3708 p
.prefix
.imet_addr
.ip
.ipa_type
= IPADDR_V4
;
3709 memcpy(&p
.prefix
.imet_addr
.ip
.ip
.addr
, pfx
, IPV4_MAX_BYTELEN
);
3712 EC_BGP_EVPN_ROUTE_INVALID
,
3713 "%u:%s - Rx EVPN Type-3 NLRI with unsupported IP address length %d",
3714 peer
->bgp
->vrf_id
, peer
->host
, ipaddr_len
);
3718 /* Process the route. */
3720 ret
= bgp_update(peer
, (struct prefix
*)&p
, addpath_id
, attr
,
3721 afi
, safi
, ZEBRA_ROUTE_BGP
, BGP_ROUTE_NORMAL
,
3722 &prd
, NULL
, 0, 0, NULL
);
3724 ret
= bgp_withdraw(peer
, (struct prefix
*)&p
, addpath_id
, attr
,
3725 afi
, safi
, ZEBRA_ROUTE_BGP
, BGP_ROUTE_NORMAL
,
3726 &prd
, NULL
, 0, NULL
);
3731 * Process received EVPN type-4 route (advertise or withdraw).
3733 static int process_type4_route(struct peer
*peer
, afi_t afi
, safi_t safi
,
3734 struct attr
*attr
, uint8_t *pfx
, int psize
,
3735 uint32_t addpath_id
)
3740 struct in_addr vtep_ip
;
3741 struct prefix_rd prd
;
3742 struct prefix_evpn p
;
3744 /* Type-4 route should be either 23 or 35 bytes
3745 * RD (8), ESI (10), ip-len (1), ip (4 or 16)
3747 if (psize
!= 23 && psize
!= 35) {
3748 flog_err(EC_BGP_EVPN_ROUTE_INVALID
,
3749 "%u:%s - Rx EVPN Type-4 NLRI with invalid length %d",
3750 peer
->bgp
->vrf_id
, peer
->host
, psize
);
3754 /* Make prefix_rd */
3755 prd
.family
= AF_UNSPEC
;
3757 memcpy(&prd
.val
, pfx
, 8);
3761 memcpy(&esi
, pfx
, ESI_BYTES
);
3766 ipaddr_len
= *pfx
++;
3767 if (ipaddr_len
== IPV4_MAX_BITLEN
) {
3768 memcpy(&vtep_ip
, pfx
, IPV4_MAX_BYTELEN
);
3771 EC_BGP_EVPN_ROUTE_INVALID
,
3772 "%u:%s - Rx EVPN Type-4 NLRI with unsupported IP address length %d",
3773 peer
->bgp
->vrf_id
, peer
->host
, ipaddr_len
);
3777 build_evpn_type4_prefix(&p
, &esi
, vtep_ip
);
3778 /* Process the route. */
3780 ret
= bgp_update(peer
, (struct prefix
*)&p
, addpath_id
, attr
,
3781 afi
, safi
, ZEBRA_ROUTE_BGP
, BGP_ROUTE_NORMAL
,
3782 &prd
, NULL
, 0, 0, NULL
);
3784 ret
= bgp_withdraw(peer
, (struct prefix
*)&p
, addpath_id
, attr
,
3785 afi
, safi
, ZEBRA_ROUTE_BGP
, BGP_ROUTE_NORMAL
,
3786 &prd
, NULL
, 0, NULL
);
3793 * Process received EVPN type-5 route (advertise or withdraw).
3795 static int process_type5_route(struct peer
*peer
, afi_t afi
, safi_t safi
,
3796 struct attr
*attr
, uint8_t *pfx
, int psize
,
3797 uint32_t addpath_id
, int withdraw
)
3799 struct prefix_rd prd
;
3800 struct prefix_evpn p
;
3801 struct bgp_route_evpn evpn
;
3804 mpls_label_t label
; /* holds the VNI as in the packet */
3807 /* Type-5 route should be 34 or 58 bytes:
3808 * RD (8), ESI (10), Eth Tag (4), IP len (1), IP (4 or 16),
3809 * GW (4 or 16) and VNI (3).
3810 * Note that the IP and GW should both be IPv4 or both IPv6.
3812 if (psize
!= 34 && psize
!= 58) {
3813 flog_err(EC_BGP_EVPN_ROUTE_INVALID
,
3814 "%u:%s - Rx EVPN Type-5 NLRI with invalid length %d",
3815 peer
->bgp
->vrf_id
, peer
->host
, psize
);
3819 /* Make prefix_rd */
3820 prd
.family
= AF_UNSPEC
;
3822 memcpy(&prd
.val
, pfx
, 8);
3825 /* Make EVPN prefix. */
3826 memset(&p
, 0, sizeof(struct prefix_evpn
));
3828 p
.prefixlen
= EVPN_ROUTE_PREFIXLEN
;
3829 p
.prefix
.route_type
= BGP_EVPN_IP_PREFIX_ROUTE
;
3831 /* Additional information outside of prefix - ESI and GW IP */
3832 memset(&evpn
, 0, sizeof(evpn
));
3835 memcpy(&evpn
.eth_s_id
.val
, pfx
, 10);
3838 /* Fetch Ethernet Tag. */
3839 memcpy(ð_tag
, pfx
, 4);
3840 p
.prefix
.prefix_addr
.eth_tag
= ntohl(eth_tag
);
3843 /* Fetch IP prefix length. */
3845 if (ippfx_len
> IPV6_MAX_BITLEN
) {
3847 EC_BGP_EVPN_ROUTE_INVALID
,
3848 "%u:%s - Rx EVPN Type-5 NLRI with invalid IP Prefix length %d",
3849 peer
->bgp
->vrf_id
, peer
->host
, ippfx_len
);
3852 p
.prefix
.prefix_addr
.ip_prefix_length
= ippfx_len
;
3854 /* Determine IPv4 or IPv6 prefix */
3855 /* Since the address and GW are from the same family, this just becomes
3856 * a simple check on the total size.
3859 SET_IPADDR_V4(&p
.prefix
.prefix_addr
.ip
);
3860 memcpy(&p
.prefix
.prefix_addr
.ip
.ipaddr_v4
, pfx
, 4);
3862 memcpy(&evpn
.gw_ip
.ipv4
, pfx
, 4);
3865 SET_IPADDR_V6(&p
.prefix
.prefix_addr
.ip
);
3866 memcpy(&p
.prefix
.prefix_addr
.ip
.ipaddr_v6
, pfx
, 16);
3868 memcpy(&evpn
.gw_ip
.ipv6
, pfx
, 16);
3872 /* Get the VNI (in MPLS label field). Stored as bytes here. */
3873 memset(&label
, 0, sizeof(label
));
3874 memcpy(&label
, pfx
, BGP_LABEL_BYTES
);
3877 * If in future, we are required to access additional fields,
3878 * we MUST increment pfx by BGP_LABEL_BYTES in before reading the next
3882 /* Process the route. */
3884 ret
= bgp_update(peer
, (struct prefix
*)&p
, addpath_id
, attr
,
3885 afi
, safi
, ZEBRA_ROUTE_BGP
, BGP_ROUTE_NORMAL
,
3886 &prd
, &label
, 1, 0, &evpn
);
3888 ret
= bgp_withdraw(peer
, (struct prefix
*)&p
, addpath_id
, attr
,
3889 afi
, safi
, ZEBRA_ROUTE_BGP
, BGP_ROUTE_NORMAL
,
3890 &prd
, &label
, 1, &evpn
);
3895 static void evpn_mpattr_encode_type5(struct stream
*s
, struct prefix
*p
,
3896 struct prefix_rd
*prd
, mpls_label_t
*label
,
3897 uint32_t num_labels
, struct attr
*attr
)
3901 struct evpn_addr
*p_evpn_p
;
3903 memset(&temp
, 0, 16);
3904 if (p
->family
!= AF_EVPN
)
3906 p_evpn_p
= &(p
->u
.prefix_evpn
);
3908 /* len denites the total len of IP and GW-IP in the route
3909 IP and GW-IP have to be both ipv4 or ipv6
3911 if (IS_IPADDR_V4(&p_evpn_p
->prefix_addr
.ip
))
3912 len
= 8; /* IP and GWIP are both ipv4 */
3914 len
= 32; /* IP and GWIP are both ipv6 */
3915 /* Prefix contains RD, ESI, EthTag, IP length, IP, GWIP and VNI */
3916 stream_putc(s
, 8 + 10 + 4 + 1 + len
+ 3);
3917 stream_put(s
, prd
->val
, 8);
3919 stream_put(s
, &(attr
->evpn_overlay
.eth_s_id
), 10);
3921 stream_put(s
, &temp
, 10);
3922 stream_putl(s
, p_evpn_p
->prefix_addr
.eth_tag
);
3923 stream_putc(s
, p_evpn_p
->prefix_addr
.ip_prefix_length
);
3924 if (IS_IPADDR_V4(&p_evpn_p
->prefix_addr
.ip
))
3925 stream_put_ipv4(s
, p_evpn_p
->prefix_addr
.ip
.ipaddr_v4
.s_addr
);
3927 stream_put(s
, &p_evpn_p
->prefix_addr
.ip
.ipaddr_v6
, 16);
3929 if (IS_IPADDR_V4(&p_evpn_p
->prefix_addr
.ip
))
3931 attr
->evpn_overlay
.gw_ip
.ipv4
.s_addr
);
3933 stream_put(s
, &(attr
->evpn_overlay
.gw_ip
.ipv6
), 16);
3935 if (IS_IPADDR_V4(&p_evpn_p
->prefix_addr
.ip
))
3936 stream_put_ipv4(s
, 0);
3938 stream_put(s
, &temp
, 16);
3942 stream_put(s
, label
, 3);
3948 * Cleanup specific VNI upon EVPN (advertise-all-vni) being disabled.
3950 static void cleanup_vni_on_disable(struct hash_backet
*backet
, struct bgp
*bgp
)
3952 struct bgpevpn
*vpn
= (struct bgpevpn
*)backet
->data
;
3954 /* Remove EVPN routes and schedule for processing. */
3955 delete_routes_for_vni(bgp
, vpn
);
3957 /* Clear "live" flag and see if hash needs to be freed. */
3958 UNSET_FLAG(vpn
->flags
, VNI_FLAG_LIVE
);
3959 if (!is_vni_configured(vpn
))
3960 bgp_evpn_free(bgp
, vpn
);
3964 * Free a VNI entry; iterator function called during cleanup.
3966 static void free_vni_entry(struct hash_backet
*backet
, struct bgp
*bgp
)
3968 struct bgpevpn
*vpn
= (struct bgpevpn
*)backet
->data
;
3970 delete_all_vni_routes(bgp
, vpn
);
3971 bgp_evpn_free(bgp
, vpn
);
3975 * Derive AUTO import RT for BGP VRF - L3VNI
3977 static void evpn_auto_rt_import_add_for_vrf(struct bgp
*bgp_vrf
)
3979 struct bgp
*bgp_def
= NULL
;
3981 form_auto_rt(bgp_vrf
, bgp_vrf
->l3vni
, bgp_vrf
->vrf_import_rtl
);
3982 UNSET_FLAG(bgp_vrf
->vrf_flags
, BGP_VRF_IMPORT_RT_CFGD
);
3985 bgp_def
= bgp_get_default();
3988 bgp_evpn_map_vrf_to_its_rts(bgp_vrf
);
3992 * Delete AUTO import RT from BGP VRF - L3VNI
3994 static void evpn_auto_rt_import_delete_for_vrf(struct bgp
*bgp_vrf
)
3996 evpn_rt_delete_auto(bgp_vrf
, bgp_vrf
->l3vni
, bgp_vrf
->vrf_import_rtl
);
4000 * Derive AUTO export RT for BGP VRF - L3VNI
4002 static void evpn_auto_rt_export_add_for_vrf(struct bgp
*bgp_vrf
)
4004 UNSET_FLAG(bgp_vrf
->vrf_flags
, BGP_VRF_EXPORT_RT_CFGD
);
4005 form_auto_rt(bgp_vrf
, bgp_vrf
->l3vni
, bgp_vrf
->vrf_export_rtl
);
4009 * Delete AUTO export RT from BGP VRF - L3VNI
4011 static void evpn_auto_rt_export_delete_for_vrf(struct bgp
*bgp_vrf
)
4013 evpn_rt_delete_auto(bgp_vrf
, bgp_vrf
->l3vni
, bgp_vrf
->vrf_export_rtl
);
4016 static void bgp_evpn_handle_export_rt_change_for_vrf(struct bgp
*bgp_vrf
)
4018 struct bgp
*bgp_def
= NULL
;
4019 struct listnode
*node
= NULL
;
4020 struct bgpevpn
*vpn
= NULL
;
4022 bgp_def
= bgp_get_default();
4026 /* update all type-5 routes */
4027 update_advertise_vrf_routes(bgp_vrf
);
4029 /* update all type-2 routes */
4030 for (ALL_LIST_ELEMENTS_RO(bgp_vrf
->l2vnis
, node
, vpn
))
4031 update_routes_for_vni(bgp_def
, vpn
);
4035 * Handle autort change for a given VNI.
4037 static void update_autort_vni(struct hash_backet
*backet
, struct bgp
*bgp
)
4039 struct bgpevpn
*vpn
= backet
->data
;
4041 if (!is_import_rt_configured(vpn
)) {
4042 if (is_vni_live(vpn
))
4043 bgp_evpn_uninstall_routes(bgp
, vpn
);
4044 bgp_evpn_unmap_vni_from_its_rts(bgp
, vpn
);
4045 list_delete_all_node(vpn
->import_rtl
);
4046 bgp_evpn_derive_auto_rt_import(bgp
, vpn
);
4047 if (is_vni_live(vpn
))
4048 bgp_evpn_install_routes(bgp
, vpn
);
4050 if (!is_export_rt_configured(vpn
)) {
4051 list_delete_all_node(vpn
->export_rtl
);
4052 bgp_evpn_derive_auto_rt_export(bgp
, vpn
);
4053 if (is_vni_live(vpn
))
4054 bgp_evpn_handle_export_rt_change(bgp
, vpn
);
4062 /* withdraw type-5 route corresponding to ip prefix */
4063 void bgp_evpn_withdraw_type5_route(struct bgp
*bgp_vrf
, struct prefix
*p
,
4064 afi_t afi
, safi_t safi
)
4067 struct prefix_evpn evp
;
4068 char buf
[PREFIX_STRLEN
];
4070 build_type5_prefix_from_ip_prefix(&evp
, p
);
4071 ret
= delete_evpn_type5_route(bgp_vrf
, &evp
);
4074 EC_BGP_EVPN_ROUTE_DELETE
,
4075 "%u failed to delete type-5 route for prefix %s in vrf %s",
4076 bgp_vrf
->vrf_id
, prefix2str(p
, buf
, sizeof(buf
)),
4077 vrf_id_to_name(bgp_vrf
->vrf_id
));
4081 /* withdraw all type-5 routes for an address family */
4082 void bgp_evpn_withdraw_type5_routes(struct bgp
*bgp_vrf
, afi_t afi
, safi_t safi
)
4084 struct bgp_table
*table
= NULL
;
4085 struct bgp_node
*rn
= NULL
;
4086 struct bgp_path_info
*ri
;
4088 table
= bgp_vrf
->rib
[afi
][safi
];
4089 for (rn
= bgp_table_top(table
); rn
; rn
= bgp_route_next(rn
)) {
4090 /* Only care about "selected" routes - non-imported. */
4091 /* TODO: Support for AddPath for EVPN. */
4092 for (ri
= rn
->info
; ri
; ri
= ri
->next
) {
4093 if (CHECK_FLAG(ri
->flags
, BGP_PATH_SELECTED
)
4094 && (!ri
->extra
|| !ri
->extra
->parent
)) {
4095 bgp_evpn_withdraw_type5_route(bgp_vrf
, &rn
->p
,
4104 * Advertise IP prefix as type-5 route. The afi/safi and src_attr passed
4105 * to this function correspond to those of the source IP prefix (best
4106 * path in the case of the attr. In the case of a local prefix (when we
4107 * are advertising local subnets), the src_attr will be NULL.
4109 void bgp_evpn_advertise_type5_route(struct bgp
*bgp_vrf
, struct prefix
*p
,
4110 struct attr
*src_attr
, afi_t afi
,
4114 struct prefix_evpn evp
;
4115 char buf
[PREFIX_STRLEN
];
4117 build_type5_prefix_from_ip_prefix(&evp
, p
);
4118 ret
= update_evpn_type5_route(bgp_vrf
, &evp
, src_attr
);
4120 flog_err(EC_BGP_EVPN_ROUTE_CREATE
,
4121 "%u: Failed to create type-5 route for prefix %s",
4122 bgp_vrf
->vrf_id
, prefix2str(p
, buf
, sizeof(buf
)));
4125 /* Inject all prefixes of a particular address-family (currently, IPv4 or
4126 * IPv6 unicast) into EVPN as type-5 routes. This is invoked when the
4127 * advertisement is enabled.
4129 void bgp_evpn_advertise_type5_routes(struct bgp
*bgp_vrf
, afi_t afi
,
4132 struct bgp_table
*table
= NULL
;
4133 struct bgp_node
*rn
= NULL
;
4134 struct bgp_path_info
*ri
;
4136 table
= bgp_vrf
->rib
[afi
][safi
];
4137 for (rn
= bgp_table_top(table
); rn
; rn
= bgp_route_next(rn
)) {
4138 /* Need to identify the "selected" route entry to use its
4139 * attribute. Also, we only consider "non-imported" routes.
4140 * TODO: Support for AddPath for EVPN.
4142 for (ri
= rn
->info
; ri
; ri
= ri
->next
) {
4143 if (CHECK_FLAG(ri
->flags
, BGP_PATH_SELECTED
)
4144 && (!ri
->extra
|| !ri
->extra
->parent
)) {
4146 /* apply the route-map */
4147 if (bgp_vrf
->adv_cmd_rmap
[afi
][safi
].map
) {
4150 ret
= route_map_apply(
4151 bgp_vrf
->adv_cmd_rmap
[afi
][safi
]
4153 &rn
->p
, RMAP_BGP
, ri
);
4154 if (ret
== RMAP_DENYMATCH
)
4157 bgp_evpn_advertise_type5_route(
4158 bgp_vrf
, &rn
->p
, ri
->attr
, afi
, safi
);
4165 void evpn_rt_delete_auto(struct bgp
*bgp
, vni_t vni
, struct list
*rtl
)
4167 struct listnode
*node
, *nnode
, *node_to_del
;
4168 struct ecommunity
*ecom
, *ecom_auto
;
4169 struct ecommunity_val eval
;
4171 if (bgp
->advertise_autort_rfc8365
)
4172 vni
|= EVPN_AUTORT_VXLAN
;
4173 encode_route_target_as((bgp
->as
& 0xFFFF), vni
, &eval
);
4175 ecom_auto
= ecommunity_new();
4176 ecommunity_add_val(ecom_auto
, &eval
);
4179 for (ALL_LIST_ELEMENTS(rtl
, node
, nnode
, ecom
)) {
4180 if (ecommunity_match(ecom
, ecom_auto
)) {
4181 ecommunity_free(&ecom
);
4187 list_delete_node(rtl
, node_to_del
);
4189 ecommunity_free(&ecom_auto
);
4192 void bgp_evpn_configure_import_rt_for_vrf(struct bgp
*bgp_vrf
,
4193 struct ecommunity
*ecomadd
)
4195 /* uninstall routes from vrf */
4196 uninstall_routes_for_vrf(bgp_vrf
);
4198 /* Cleanup the RT to VRF mapping */
4199 bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf
);
4201 /* Remove auto generated RT */
4202 evpn_auto_rt_import_delete_for_vrf(bgp_vrf
);
4204 /* Add the newly configured RT to RT list */
4205 listnode_add_sort(bgp_vrf
->vrf_import_rtl
, ecomadd
);
4206 SET_FLAG(bgp_vrf
->vrf_flags
, BGP_VRF_IMPORT_RT_CFGD
);
4208 /* map VRF to its RTs */
4209 bgp_evpn_map_vrf_to_its_rts(bgp_vrf
);
4211 /* install routes matching the new VRF */
4212 install_routes_for_vrf(bgp_vrf
);
4215 void bgp_evpn_unconfigure_import_rt_for_vrf(struct bgp
*bgp_vrf
,
4216 struct ecommunity
*ecomdel
)
4218 struct listnode
*node
= NULL
, *nnode
= NULL
, *node_to_del
= NULL
;
4219 struct ecommunity
*ecom
= NULL
;
4221 /* uninstall routes from vrf */
4222 uninstall_routes_for_vrf(bgp_vrf
);
4224 /* Cleanup the RT to VRF mapping */
4225 bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf
);
4227 /* remove the RT from the RT list */
4228 for (ALL_LIST_ELEMENTS(bgp_vrf
->vrf_import_rtl
, node
, nnode
, ecom
)) {
4229 if (ecommunity_match(ecom
, ecomdel
)) {
4230 ecommunity_free(&ecom
);
4237 list_delete_node(bgp_vrf
->vrf_import_rtl
, node_to_del
);
4239 assert(bgp_vrf
->vrf_import_rtl
);
4240 /* fallback to auto import rt, if this was the last RT */
4241 if (bgp_vrf
->vrf_import_rtl
&& list_isempty(bgp_vrf
->vrf_import_rtl
)) {
4242 UNSET_FLAG(bgp_vrf
->vrf_flags
, BGP_VRF_IMPORT_RT_CFGD
);
4243 evpn_auto_rt_import_add_for_vrf(bgp_vrf
);
4246 /* map VRFs to its RTs */
4247 bgp_evpn_map_vrf_to_its_rts(bgp_vrf
);
4249 /* install routes matching this new RT */
4250 install_routes_for_vrf(bgp_vrf
);
4253 void bgp_evpn_configure_export_rt_for_vrf(struct bgp
*bgp_vrf
,
4254 struct ecommunity
*ecomadd
)
4256 /* remove auto-generated RT */
4257 evpn_auto_rt_export_delete_for_vrf(bgp_vrf
);
4259 /* Add the new RT to the RT list */
4260 listnode_add_sort(bgp_vrf
->vrf_export_rtl
, ecomadd
);
4261 SET_FLAG(bgp_vrf
->vrf_flags
, BGP_VRF_EXPORT_RT_CFGD
);
4263 bgp_evpn_handle_export_rt_change_for_vrf(bgp_vrf
);
4266 void bgp_evpn_unconfigure_export_rt_for_vrf(struct bgp
*bgp_vrf
,
4267 struct ecommunity
*ecomdel
)
4269 struct listnode
*node
= NULL
, *nnode
= NULL
, *node_to_del
= NULL
;
4270 struct ecommunity
*ecom
= NULL
;
4272 /* Remove the RT from the RT list */
4273 for (ALL_LIST_ELEMENTS(bgp_vrf
->vrf_export_rtl
, node
, nnode
, ecom
)) {
4274 if (ecommunity_match(ecom
, ecomdel
)) {
4275 ecommunity_free(&ecom
);
4282 list_delete_node(bgp_vrf
->vrf_export_rtl
, node_to_del
);
4285 * Temporary assert to make SA happy.
4286 * The ALL_LIST_ELEMENTS macro above has a NULL check
4287 * which means that SA is going to complain about
4288 * the list_isempty call, which doesn't NULL check.
4289 * So until we get this situation cleaned up, here
4292 assert(bgp_vrf
->vrf_export_rtl
);
4294 /* fall back to auto-generated RT if this was the last RT */
4295 if (list_isempty(bgp_vrf
->vrf_export_rtl
)) {
4296 UNSET_FLAG(bgp_vrf
->vrf_flags
, BGP_VRF_EXPORT_RT_CFGD
);
4297 evpn_auto_rt_export_add_for_vrf(bgp_vrf
);
4300 bgp_evpn_handle_export_rt_change_for_vrf(bgp_vrf
);
4304 * Handle change to BGP router id. This is invoked twice by the change
4305 * handler, first before the router id has been changed and then after
4306 * the router id has been changed. The first invocation will result in
4307 * local routes for all VNIs/VRF being deleted and withdrawn and the next
4308 * will result in the routes being re-advertised.
4310 void bgp_evpn_handle_router_id_update(struct bgp
*bgp
, int withdraw
)
4314 /* delete and withdraw all the type-5 routes
4315 stored in the global table for this vrf
4317 withdraw_router_id_vrf(bgp
);
4319 /* delete all the VNI routes (type-2/type-3) routes for all the
4322 hash_iterate(bgp
->vnihash
,
4323 (void (*)(struct hash_backet
*,
4324 void *))withdraw_router_id_vni
,
4328 /* advertise all routes in the vrf as type-5 routes with the new
4331 update_router_id_vrf(bgp
);
4333 /* advertise all the VNI routes (type-2/type-3) routes with the
4336 hash_iterate(bgp
->vnihash
,
4337 (void (*)(struct hash_backet
*,
4338 void *))update_router_id_vni
,
4344 * Handle change to auto-RT algorithm - update and advertise local routes.
4346 void bgp_evpn_handle_autort_change(struct bgp
*bgp
)
4348 hash_iterate(bgp
->vnihash
,
4349 (void (*)(struct hash_backet
*,
4350 void*))update_autort_vni
,
4355 * Handle change to export RT - update and advertise local routes.
4357 int bgp_evpn_handle_export_rt_change(struct bgp
*bgp
, struct bgpevpn
*vpn
)
4359 return update_routes_for_vni(bgp
, vpn
);
4362 void bgp_evpn_handle_vrf_rd_change(struct bgp
*bgp_vrf
, int withdraw
)
4365 delete_withdraw_vrf_routes(bgp_vrf
);
4367 update_advertise_vrf_routes(bgp_vrf
);
4371 * Handle change to RD. This is invoked twice by the change handler,
4372 * first before the RD has been changed and then after the RD has
4373 * been changed. The first invocation will result in local routes
4374 * of this VNI being deleted and withdrawn and the next will result
4375 * in the routes being re-advertised.
4377 void bgp_evpn_handle_rd_change(struct bgp
*bgp
, struct bgpevpn
*vpn
,
4381 delete_withdraw_vni_routes(bgp
, vpn
);
4383 update_advertise_vni_routes(bgp
, vpn
);
4387 * Install routes for this VNI. Invoked upon change to Import RT.
4389 int bgp_evpn_install_routes(struct bgp
*bgp
, struct bgpevpn
*vpn
)
4391 return install_routes_for_vni(bgp
, vpn
);
4395 * Uninstall all routes installed for this VNI. Invoked upon change
4398 int bgp_evpn_uninstall_routes(struct bgp
*bgp
, struct bgpevpn
*vpn
)
4400 return uninstall_routes_for_vni(bgp
, vpn
);
4404 * TODO: Hardcoded for a maximum of 2 VNIs right now
4406 char *bgp_evpn_label2str(mpls_label_t
*label
, uint32_t num_labels
, char *buf
,
4411 vni1
= label2vni(label
);
4412 if (num_labels
== 2) {
4413 vni2
= label2vni(label
+ 1);
4414 snprintf(buf
, len
, "%u/%u", vni1
, vni2
);
4416 snprintf(buf
, len
, "%u", vni1
);
4421 * Function to convert evpn route to json format.
4422 * NOTE: We don't use prefix2str as the output here is a bit different.
4424 void bgp_evpn_route2json(struct prefix_evpn
*p
, json_object
*json
)
4426 char buf1
[ETHER_ADDR_STRLEN
];
4427 char buf2
[PREFIX2STR_BUFFER
];
4432 if (p
->prefix
.route_type
== BGP_EVPN_IMET_ROUTE
) {
4433 json_object_int_add(json
, "routeType", p
->prefix
.route_type
);
4434 json_object_int_add(json
, "ethTag",
4435 p
->prefix
.imet_addr
.eth_tag
);
4436 json_object_int_add(json
, "ipLen",
4437 is_evpn_prefix_ipaddr_v4(p
)
4440 json_object_string_add(json
, "ip",
4441 inet_ntoa(p
->prefix
.imet_addr
.ip
.ipaddr_v4
));
4442 } else if (p
->prefix
.route_type
== BGP_EVPN_MAC_IP_ROUTE
) {
4443 if (is_evpn_prefix_ipaddr_none(p
)) {
4444 json_object_int_add(json
, "routeType",
4445 p
->prefix
.route_type
);
4446 json_object_int_add(json
, "ethTag",
4447 p
->prefix
.macip_addr
.eth_tag
);
4448 json_object_int_add(json
, "macLen", 8 * ETH_ALEN
);
4449 json_object_string_add(json
, "mac",
4450 prefix_mac2str(&p
->prefix
.macip_addr
.mac
,
4456 family
= is_evpn_prefix_ipaddr_v4(p
) ? AF_INET
4459 json_object_int_add(json
, "routeType",
4460 p
->prefix
.route_type
);
4461 json_object_int_add(json
, "ethTag",
4462 p
->prefix
.macip_addr
.eth_tag
);
4463 json_object_int_add(json
, "macLen", 8 * ETH_ALEN
);
4464 json_object_string_add(json
, "mac",
4465 prefix_mac2str(&p
->prefix
.macip_addr
.mac
,
4468 json_object_int_add(json
, "ipLen",
4469 is_evpn_prefix_ipaddr_v4(p
)
4472 json_object_string_add(
4475 &p
->prefix
.macip_addr
.ip
.ip
.addr
,
4477 PREFIX2STR_BUFFER
));
4480 /* Currently, this is to cater to other AF_ETHERNET code. */
4485 * Function to convert evpn route to string.
4486 * NOTE: We don't use prefix2str as the output here is a bit different.
4488 char *bgp_evpn_route2str(struct prefix_evpn
*p
, char *buf
, int len
)
4490 char buf1
[ETHER_ADDR_STRLEN
];
4491 char buf2
[PREFIX2STR_BUFFER
];
4492 char buf3
[ESI_STR_LEN
];
4494 if (p
->prefix
.route_type
== BGP_EVPN_IMET_ROUTE
) {
4495 snprintf(buf
, len
, "[%d]:[%d]:[%d]:[%s]", p
->prefix
.route_type
,
4496 p
->prefix
.imet_addr
.eth_tag
,
4497 is_evpn_prefix_ipaddr_v4(p
) ? IPV4_MAX_BITLEN
4499 inet_ntoa(p
->prefix
.imet_addr
.ip
.ipaddr_v4
));
4500 } else if (p
->prefix
.route_type
== BGP_EVPN_MAC_IP_ROUTE
) {
4501 if (is_evpn_prefix_ipaddr_none(p
))
4502 snprintf(buf
, len
, "[%d]:[%d]:[%d]:[%s]",
4503 p
->prefix
.route_type
,
4504 p
->prefix
.macip_addr
.eth_tag
,
4506 prefix_mac2str(&p
->prefix
.macip_addr
.mac
, buf1
,
4511 family
= is_evpn_prefix_ipaddr_v4(p
) ? AF_INET
4513 snprintf(buf
, len
, "[%d]:[%d]:[%d]:[%s]:[%d]:[%s]",
4514 p
->prefix
.route_type
,
4515 p
->prefix
.macip_addr
.eth_tag
,
4517 prefix_mac2str(&p
->prefix
.macip_addr
.mac
, buf1
,
4519 family
== AF_INET
? IPV4_MAX_BITLEN
4522 &p
->prefix
.macip_addr
.ip
.ip
.addr
,
4524 PREFIX2STR_BUFFER
));
4526 } else if (p
->prefix
.route_type
== BGP_EVPN_IP_PREFIX_ROUTE
) {
4527 snprintf(buf
, len
, "[%d]:[%d]:[%d]:[%s]",
4528 p
->prefix
.route_type
,
4529 p
->prefix
.prefix_addr
.eth_tag
,
4530 p
->prefix
.prefix_addr
.ip_prefix_length
,
4531 is_evpn_prefix_ipaddr_v4(p
)
4532 ? inet_ntoa(p
->prefix
.prefix_addr
.ip
.ipaddr_v4
)
4533 : inet6_ntoa(p
->prefix
.prefix_addr
.ip
.ipaddr_v6
));
4534 } else if (p
->prefix
.route_type
== BGP_EVPN_ES_ROUTE
) {
4535 snprintf(buf
, len
, "[%d]:[%s]:[%d]:[%s]",
4536 p
->prefix
.route_type
,
4537 esi_to_str(&p
->prefix
.es_addr
.esi
, buf3
, sizeof(buf3
)),
4538 is_evpn_prefix_ipaddr_v4(p
) ? IPV4_MAX_BITLEN
4540 inet_ntoa(p
->prefix
.es_addr
.ip
.ipaddr_v4
));
4542 /* For EVPN route types not supported yet. */
4543 snprintf(buf
, len
, "(unsupported route type %d)",
4544 p
->prefix
.route_type
);
4551 * Encode EVPN prefix in Update (MP_REACH)
4553 void bgp_evpn_encode_prefix(struct stream
*s
, struct prefix
*p
,
4554 struct prefix_rd
*prd
, mpls_label_t
*label
,
4555 uint32_t num_labels
, struct attr
*attr
,
4556 int addpath_encode
, uint32_t addpath_tx_id
)
4558 struct prefix_evpn
*evp
= (struct prefix_evpn
*)p
;
4559 int len
, ipa_len
= 0;
4562 stream_putl(s
, addpath_tx_id
);
4565 stream_putc(s
, evp
->prefix
.route_type
);
4567 switch (evp
->prefix
.route_type
) {
4568 case BGP_EVPN_MAC_IP_ROUTE
:
4569 if (is_evpn_prefix_ipaddr_v4(evp
))
4570 ipa_len
= IPV4_MAX_BYTELEN
;
4571 else if (is_evpn_prefix_ipaddr_v6(evp
))
4572 ipa_len
= IPV6_MAX_BYTELEN
;
4573 /* RD, ESI, EthTag, MAC+len, IP len, [IP], 1 VNI */
4574 len
= 8 + 10 + 4 + 1 + 6 + 1 + ipa_len
+ 3;
4575 if (ipa_len
&& num_labels
> 1) /* There are 2 VNIs */
4577 stream_putc(s
, len
);
4578 stream_put(s
, prd
->val
, 8); /* RD */
4580 stream_put(s
, &attr
->evpn_overlay
.eth_s_id
, ESI_LEN
);
4582 stream_put(s
, 0, 10);
4583 stream_putl(s
, evp
->prefix
.macip_addr
.eth_tag
); /* Ethernet Tag ID */
4584 stream_putc(s
, 8 * ETH_ALEN
); /* Mac Addr Len - bits */
4585 stream_put(s
, evp
->prefix
.macip_addr
.mac
.octet
, 6); /* Mac Addr */
4586 stream_putc(s
, 8 * ipa_len
); /* IP address Length */
4587 if (ipa_len
) /* IP */
4588 stream_put(s
, &evp
->prefix
.macip_addr
.ip
.ip
.addr
,
4590 /* 1st label is the L2 VNI */
4591 stream_put(s
, label
, BGP_LABEL_BYTES
);
4592 /* Include 2nd label (L3 VNI) if advertising MAC+IP */
4593 if (ipa_len
&& num_labels
> 1)
4594 stream_put(s
, label
+ 1, BGP_LABEL_BYTES
);
4597 case BGP_EVPN_IMET_ROUTE
:
4598 stream_putc(s
, 17); // TODO: length - assumes IPv4 address
4599 stream_put(s
, prd
->val
, 8); /* RD */
4600 stream_putl(s
, evp
->prefix
.imet_addr
.eth_tag
); /* Ethernet Tag ID */
4601 stream_putc(s
, IPV4_MAX_BITLEN
); /* IP address Length - bits */
4602 /* Originating Router's IP Addr */
4603 stream_put_in_addr(s
, &evp
->prefix
.imet_addr
.ip
.ipaddr_v4
);
4606 case BGP_EVPN_ES_ROUTE
:
4607 stream_putc(s
, 23); /* TODO: length: assumes ipv4 VTEP */
4608 stream_put(s
, prd
->val
, 8); /* RD */
4609 stream_put(s
, evp
->prefix
.es_addr
.esi
.val
, 10); /* ESI */
4610 stream_putc(s
, IPV4_MAX_BITLEN
); /* IP address Length - bits */
4612 stream_put_in_addr(s
, &evp
->prefix
.es_addr
.ip
.ipaddr_v4
);
4615 case BGP_EVPN_IP_PREFIX_ROUTE
:
4616 /* TODO: AddPath support. */
4617 evpn_mpattr_encode_type5(s
, p
, prd
, label
, num_labels
, attr
);
4625 int bgp_nlri_parse_evpn(struct peer
*peer
, struct attr
*attr
,
4626 struct bgp_nlri
*packet
, int withdraw
)
4632 uint32_t addpath_id
;
4633 int addpath_encoded
;
4638 /* Start processing the NLRI - there may be multiple in the MP_REACH */
4640 lim
= pnt
+ packet
->length
;
4642 safi
= packet
->safi
;
4646 (CHECK_FLAG(peer
->af_cap
[afi
][safi
], PEER_CAP_ADDPATH_AF_RX_ADV
)
4647 && CHECK_FLAG(peer
->af_cap
[afi
][safi
],
4648 PEER_CAP_ADDPATH_AF_TX_RCV
));
4650 for (; pnt
< lim
; pnt
+= psize
) {
4651 /* Clear prefix structure. */
4652 memset(&p
, 0, sizeof(struct prefix
));
4654 /* Deal with path-id if AddPath is supported. */
4655 if (addpath_encoded
) {
4656 /* When packet overflow occurs return immediately. */
4657 if (pnt
+ BGP_ADDPATH_ID_LEN
> lim
)
4660 addpath_id
= ntohl(*((uint32_t *)pnt
));
4661 pnt
+= BGP_ADDPATH_ID_LEN
;
4664 /* All EVPN NLRI types start with type and length. */
4671 /* When packet overflow occur return immediately. */
4672 if (pnt
+ psize
> lim
)
4676 case BGP_EVPN_MAC_IP_ROUTE
:
4677 if (process_type2_route(peer
, afi
, safi
,
4678 withdraw
? NULL
: attr
, pnt
,
4679 psize
, addpath_id
)) {
4682 "%u:%s - Error in processing EVPN type-2 NLRI size %d",
4683 peer
->bgp
->vrf_id
, peer
->host
, psize
);
4688 case BGP_EVPN_IMET_ROUTE
:
4689 if (process_type3_route(peer
, afi
, safi
,
4690 withdraw
? NULL
: attr
, pnt
,
4691 psize
, addpath_id
)) {
4694 "%u:%s - Error in processing EVPN type-3 NLRI size %d",
4695 peer
->bgp
->vrf_id
, peer
->host
, psize
);
4700 case BGP_EVPN_ES_ROUTE
:
4701 if (process_type4_route(peer
, afi
, safi
,
4702 withdraw
? NULL
: attr
, pnt
,
4703 psize
, addpath_id
)) {
4706 "%u:%s - Error in processing EVPN type-4 NLRI size %d",
4707 peer
->bgp
->vrf_id
, peer
->host
, psize
);
4712 case BGP_EVPN_IP_PREFIX_ROUTE
:
4713 if (process_type5_route(peer
, afi
, safi
, attr
, pnt
,
4714 psize
, addpath_id
, withdraw
)) {
4717 "%u:%s - Error in processing EVPN type-5 NLRI size %d",
4718 peer
->bgp
->vrf_id
, peer
->host
, psize
);
4728 /* Packet length consistency check. */
4736 * Map the RTs (configured or automatically derived) of a VRF to the VRF.
4737 * The mapping will be used during route processing.
4738 * bgp_def: default bgp instance
4739 * bgp_vrf: specific bgp vrf instance on which RT is configured
4741 void bgp_evpn_map_vrf_to_its_rts(struct bgp
*bgp_vrf
)
4744 struct ecommunity_val
*eval
= NULL
;
4745 struct listnode
*node
= NULL
, *nnode
= NULL
;
4746 struct ecommunity
*ecom
= NULL
;
4748 for (ALL_LIST_ELEMENTS(bgp_vrf
->vrf_import_rtl
, node
, nnode
, ecom
)) {
4749 for (i
= 0; i
< ecom
->size
; i
++) {
4750 eval
= (struct ecommunity_val
*)(ecom
->val
4752 * ECOMMUNITY_SIZE
));
4753 map_vrf_to_rt(bgp_vrf
, eval
);
4759 * Unmap the RTs (configured or automatically derived) of a VRF from the VRF.
4761 void bgp_evpn_unmap_vrf_from_its_rts(struct bgp
*bgp_vrf
)
4764 struct ecommunity_val
*eval
;
4765 struct listnode
*node
, *nnode
;
4766 struct ecommunity
*ecom
;
4768 for (ALL_LIST_ELEMENTS(bgp_vrf
->vrf_import_rtl
, node
, nnode
, ecom
)) {
4769 for (i
= 0; i
< ecom
->size
; i
++) {
4770 struct vrf_irt_node
*irt
;
4771 struct ecommunity_val eval_tmp
;
4773 eval
= (struct ecommunity_val
*)(ecom
->val
4775 * ECOMMUNITY_SIZE
));
4776 /* If using "automatic" RT, we only care about the
4777 * local-admin sub-field.
4778 * This is to facilitate using VNI as the RT for EBGP
4781 memcpy(&eval_tmp
, eval
, ECOMMUNITY_SIZE
);
4782 if (!CHECK_FLAG(bgp_vrf
->vrf_flags
,
4783 BGP_VRF_IMPORT_RT_CFGD
))
4784 mask_ecom_global_admin(&eval_tmp
, eval
);
4786 irt
= lookup_vrf_import_rt(&eval_tmp
);
4788 unmap_vrf_from_rt(bgp_vrf
, irt
);
4795 * Map the RTs (configured or automatically derived) of a VNI to the VNI.
4796 * The mapping will be used during route processing.
4798 void bgp_evpn_map_vni_to_its_rts(struct bgp
*bgp
, struct bgpevpn
*vpn
)
4801 struct ecommunity_val
*eval
;
4802 struct listnode
*node
, *nnode
;
4803 struct ecommunity
*ecom
;
4805 for (ALL_LIST_ELEMENTS(vpn
->import_rtl
, node
, nnode
, ecom
)) {
4806 for (i
= 0; i
< ecom
->size
; i
++) {
4807 eval
= (struct ecommunity_val
*)(ecom
->val
4809 * ECOMMUNITY_SIZE
));
4810 map_vni_to_rt(bgp
, vpn
, eval
);
4816 * Unmap the RTs (configured or automatically derived) of a VNI from the VNI.
4818 void bgp_evpn_unmap_vni_from_its_rts(struct bgp
*bgp
, struct bgpevpn
*vpn
)
4821 struct ecommunity_val
*eval
;
4822 struct listnode
*node
, *nnode
;
4823 struct ecommunity
*ecom
;
4825 for (ALL_LIST_ELEMENTS(vpn
->import_rtl
, node
, nnode
, ecom
)) {
4826 for (i
= 0; i
< ecom
->size
; i
++) {
4827 struct irt_node
*irt
;
4828 struct ecommunity_val eval_tmp
;
4830 eval
= (struct ecommunity_val
*)(ecom
->val
4832 * ECOMMUNITY_SIZE
));
4833 /* If using "automatic" RT, we only care about the
4834 * local-admin sub-field.
4835 * This is to facilitate using VNI as the RT for EBGP
4838 memcpy(&eval_tmp
, eval
, ECOMMUNITY_SIZE
);
4839 if (!is_import_rt_configured(vpn
))
4840 mask_ecom_global_admin(&eval_tmp
, eval
);
4842 irt
= lookup_import_rt(bgp
, &eval_tmp
);
4844 unmap_vni_from_rt(bgp
, vpn
, irt
);
4850 * Derive Import RT automatically for VNI and map VNI to RT.
4851 * The mapping will be used during route processing.
4853 void bgp_evpn_derive_auto_rt_import(struct bgp
*bgp
, struct bgpevpn
*vpn
)
4855 form_auto_rt(bgp
, vpn
->vni
, vpn
->import_rtl
);
4856 UNSET_FLAG(vpn
->flags
, VNI_FLAG_IMPRT_CFGD
);
4859 bgp_evpn_map_vni_to_its_rts(bgp
, vpn
);
4863 * Derive Export RT automatically for VNI.
4865 void bgp_evpn_derive_auto_rt_export(struct bgp
*bgp
, struct bgpevpn
*vpn
)
4867 form_auto_rt(bgp
, vpn
->vni
, vpn
->export_rtl
);
4868 UNSET_FLAG(vpn
->flags
, VNI_FLAG_EXPRT_CFGD
);
4872 * Derive RD automatically for VNI using passed information - it
4873 * is of the form RouterId:unique-id-for-vni.
4875 void bgp_evpn_derive_auto_rd_for_vrf(struct bgp
*bgp
)
4877 form_auto_rd(bgp
->router_id
, bgp
->vrf_rd_id
, &bgp
->vrf_prd
);
4881 * Derive RD automatically for VNI using passed information - it
4882 * is of the form RouterId:unique-id-for-vni.
4884 void bgp_evpn_derive_auto_rd(struct bgp
*bgp
, struct bgpevpn
*vpn
)
4888 vpn
->prd
.family
= AF_UNSPEC
;
4889 vpn
->prd
.prefixlen
= 64;
4890 sprintf(buf
, "%s:%hu", inet_ntoa(bgp
->router_id
), vpn
->rd_id
);
4891 (void)str2prefix_rd(buf
, &vpn
->prd
);
4892 UNSET_FLAG(vpn
->flags
, VNI_FLAG_RD_CFGD
);
4898 bool bgp_evpn_lookup_l3vni_l2vni_table(vni_t vni
)
4900 struct list
*inst
= bm
->bgp
;
4901 struct listnode
*node
;
4902 struct bgp
*bgp_vrf
;
4904 for (ALL_LIST_ELEMENTS_RO(inst
, node
, bgp_vrf
)) {
4905 if (bgp_vrf
->l3vni
== vni
)
4915 struct bgpevpn
*bgp_evpn_lookup_vni(struct bgp
*bgp
, vni_t vni
)
4917 struct bgpevpn
*vpn
;
4920 memset(&tmp
, 0, sizeof(struct bgpevpn
));
4922 vpn
= hash_lookup(bgp
->vnihash
, &tmp
);
4927 * Create a new vpn - invoked upon configuration or zebra notification.
4929 struct bgpevpn
*bgp_evpn_new(struct bgp
*bgp
, vni_t vni
,
4930 struct in_addr originator_ip
,
4931 vrf_id_t tenant_vrf_id
)
4933 struct bgpevpn
*vpn
;
4938 vpn
= XCALLOC(MTYPE_BGP_EVPN
, sizeof(struct bgpevpn
));
4942 /* Set values - RD and RT set to defaults. */
4944 vpn
->originator_ip
= originator_ip
;
4945 vpn
->tenant_vrf_id
= tenant_vrf_id
;
4947 /* Initialize route-target import and export lists */
4948 vpn
->import_rtl
= list_new();
4949 vpn
->import_rtl
->cmp
= (int (*)(void *, void *))evpn_route_target_cmp
;
4950 vpn
->import_rtl
->del
= evpn_xxport_delete_ecomm
;
4951 vpn
->export_rtl
= list_new();
4952 vpn
->export_rtl
->cmp
= (int (*)(void *, void *))evpn_route_target_cmp
;
4953 vpn
->export_rtl
->del
= evpn_xxport_delete_ecomm
;
4954 bf_assign_index(bm
->rd_idspace
, vpn
->rd_id
);
4955 derive_rd_rt_for_vni(bgp
, vpn
);
4957 /* Initialize EVPN route table. */
4958 vpn
->route_table
= bgp_table_init(bgp
, AFI_L2VPN
, SAFI_EVPN
);
4961 if (!hash_get(bgp
->vnihash
, vpn
, hash_alloc_intern
)) {
4962 XFREE(MTYPE_BGP_EVPN
, vpn
);
4966 /* add to l2vni list on corresponding vrf */
4967 bgpevpn_link_to_l3vni(vpn
);
4969 QOBJ_REG(vpn
, bgpevpn
);
4974 * Free a given VPN - called in multiple scenarios such as zebra
4975 * notification, configuration being deleted, advertise-all-vni disabled etc.
4976 * This just frees appropriate memory, caller should have taken other
4979 void bgp_evpn_free(struct bgp
*bgp
, struct bgpevpn
*vpn
)
4981 bgpevpn_unlink_from_l3vni(vpn
);
4982 bgp_table_unlock(vpn
->route_table
);
4983 bgp_evpn_unmap_vni_from_its_rts(bgp
, vpn
);
4984 list_delete(&vpn
->import_rtl
);
4985 list_delete(&vpn
->export_rtl
);
4986 bf_release_index(bm
->rd_idspace
, vpn
->rd_id
);
4987 hash_release(bgp
->vnihash
, vpn
);
4989 XFREE(MTYPE_BGP_EVPN
, vpn
);
4995 struct evpnes
*bgp_evpn_lookup_es(struct bgp
*bgp
, esi_t
*esi
)
5000 memset(&tmp
, 0, sizeof(struct evpnes
));
5001 memcpy(&tmp
.esi
, esi
, sizeof(esi_t
));
5002 es
= hash_lookup(bgp
->esihash
, &tmp
);
5007 * Create a new local es - invoked upon zebra notification.
5009 struct evpnes
*bgp_evpn_es_new(struct bgp
*bgp
,
5011 struct ipaddr
*originator_ip
)
5019 es
= XCALLOC(MTYPE_BGP_EVPN_ES
, sizeof(struct evpnes
));
5023 /* set the ESI and originator_ip */
5024 memcpy(&es
->esi
, esi
, sizeof(esi_t
));
5025 memcpy(&es
->originator_ip
, originator_ip
, sizeof(struct ipaddr
));
5027 /* Initialise the VTEP list */
5028 es
->vtep_list
= list_new();
5029 es
->vtep_list
->cmp
= (int (*)(void *, void *))evpn_vtep_ip_cmp
;
5031 /* auto derive RD for this es */
5032 bf_assign_index(bm
->rd_idspace
, es
->rd_id
);
5033 es
->prd
.family
= AF_UNSPEC
;
5034 es
->prd
.prefixlen
= 64;
5035 sprintf(buf
, "%s:%hu", inet_ntoa(bgp
->router_id
), es
->rd_id
);
5036 (void)str2prefix_rd(buf
, &es
->prd
);
5038 /* Initialize the ES route table */
5039 es
->route_table
= bgp_table_init(bgp
, AFI_L2VPN
, SAFI_EVPN
);
5042 if (!hash_get(bgp
->esihash
, es
, hash_alloc_intern
)) {
5043 XFREE(MTYPE_BGP_EVPN_ES
, es
);
5047 QOBJ_REG(es
, evpnes
);
5053 * This just frees appropriate memory, caller should have taken other
5056 void bgp_evpn_es_free(struct bgp
*bgp
, struct evpnes
*es
)
5058 list_delete(&es
->vtep_list
);
5059 bgp_table_unlock(es
->route_table
);
5060 bf_release_index(bm
->rd_idspace
, es
->rd_id
);
5061 hash_release(bgp
->esihash
, es
);
5063 XFREE(MTYPE_BGP_EVPN_ES
, es
);
5067 * Import evpn route from global table to VNI/VRF/ESI.
5069 int bgp_evpn_import_route(struct bgp
*bgp
, afi_t afi
, safi_t safi
,
5070 struct prefix
*p
, struct bgp_path_info
*ri
)
5072 return install_uninstall_evpn_route(bgp
, afi
, safi
, p
, ri
, 1);
5076 * Unimport evpn route from VNI/VRF/ESI.
5078 int bgp_evpn_unimport_route(struct bgp
*bgp
, afi_t afi
, safi_t safi
,
5079 struct prefix
*p
, struct bgp_path_info
*ri
)
5081 return install_uninstall_evpn_route(bgp
, afi
, safi
, p
, ri
, 0);
5084 /* filter routes which have martian next hops */
5085 int bgp_filter_evpn_routes_upon_martian_nh_change(struct bgp
*bgp
)
5089 struct bgp_node
*rd_rn
, *rn
;
5090 struct bgp_table
*table
;
5091 struct bgp_path_info
*ri
;
5096 /* Walk entire global routing table and evaluate routes which could be
5097 * imported into this VPN. Note that we cannot just look at the routes
5098 * for the VNI's RD -
5099 * remote routes applicable for this VNI could have any RD.
5101 /* EVPN routes are a 2-level table. */
5102 for (rd_rn
= bgp_table_top(bgp
->rib
[afi
][safi
]); rd_rn
;
5103 rd_rn
= bgp_route_next(rd_rn
)) {
5104 table
= (struct bgp_table
*)(rd_rn
->info
);
5108 for (rn
= bgp_table_top(table
); rn
; rn
= bgp_route_next(rn
)) {
5110 for (ri
= rn
->info
; ri
; ri
= ri
->next
) {
5112 /* Consider "valid" remote routes applicable for
5114 if (!(ri
->type
== ZEBRA_ROUTE_BGP
5115 && ri
->sub_type
== BGP_ROUTE_NORMAL
))
5118 if (bgp_nexthop_self(bgp
, ri
->attr
->nexthop
)) {
5120 char attr_str
[BUFSIZ
];
5121 char pbuf
[PREFIX_STRLEN
];
5123 bgp_dump_attr(ri
->attr
, attr_str
,
5126 if (bgp_debug_update(ri
->peer
, &rn
->p
,
5129 "%u: prefix %s with attr %s - DENIED due to martian or self nexthop",
5136 bgp_evpn_unimport_route(bgp
, afi
, safi
,
5139 bgp_rib_remove(rn
, ri
, ri
->peer
, afi
,
5150 * Handle del of a local MACIP.
5152 int bgp_evpn_local_macip_del(struct bgp
*bgp
, vni_t vni
, struct ethaddr
*mac
,
5155 struct bgpevpn
*vpn
;
5156 struct prefix_evpn p
;
5158 /* Lookup VNI hash - should exist. */
5159 vpn
= bgp_evpn_lookup_vni(bgp
, vni
);
5160 if (!vpn
|| !is_vni_live(vpn
)) {
5161 flog_warn(EC_BGP_EVPN_VPN_VNI
,
5162 "%u: VNI hash entry for VNI %u %s at MACIP DEL",
5163 bgp
->vrf_id
, vni
, vpn
? "not live" : "not found");
5167 /* Remove EVPN type-2 route and schedule for processing. */
5168 build_evpn_type2_prefix(&p
, mac
, ip
);
5169 delete_evpn_route(bgp
, vpn
, &p
);
5175 * Handle add of a local MACIP.
5177 int bgp_evpn_local_macip_add(struct bgp
*bgp
, vni_t vni
, struct ethaddr
*mac
,
5178 struct ipaddr
*ip
, uint8_t flags
, uint32_t seq
)
5180 struct bgpevpn
*vpn
;
5181 struct prefix_evpn p
;
5183 /* Lookup VNI hash - should exist. */
5184 vpn
= bgp_evpn_lookup_vni(bgp
, vni
);
5185 if (!vpn
|| !is_vni_live(vpn
)) {
5186 flog_warn(EC_BGP_EVPN_VPN_VNI
,
5187 "%u: VNI hash entry for VNI %u %s at MACIP ADD",
5188 bgp
->vrf_id
, vni
, vpn
? "not live" : "not found");
5192 /* Create EVPN type-2 route and schedule for processing. */
5193 build_evpn_type2_prefix(&p
, mac
, ip
);
5194 if (update_evpn_route(bgp
, vpn
, &p
, flags
, seq
)) {
5195 char buf
[ETHER_ADDR_STRLEN
];
5196 char buf2
[INET6_ADDRSTRLEN
];
5199 EC_BGP_EVPN_ROUTE_CREATE
,
5200 "%u:Failed to create Type-2 route, VNI %u %s MAC %s IP %s (flags: 0x%x)",
5201 bgp
->vrf_id
, vpn
->vni
,
5202 CHECK_FLAG(flags
, ZEBRA_MACIP_TYPE_STICKY
)
5205 prefix_mac2str(mac
, buf
, sizeof(buf
)),
5206 ipaddr2str(ip
, buf2
, sizeof(buf2
)), flags
);
5213 static void link_l2vni_hash_to_l3vni(struct hash_backet
*backet
,
5214 struct bgp
*bgp_vrf
)
5216 struct bgpevpn
*vpn
= (struct bgpevpn
*)backet
->data
;
5217 struct bgp
*bgp_def
= NULL
;
5219 bgp_def
= bgp_get_default();
5222 if (vpn
->tenant_vrf_id
== bgp_vrf
->vrf_id
)
5223 bgpevpn_link_to_l3vni(vpn
);
5226 int bgp_evpn_local_l3vni_add(vni_t l3vni
, vrf_id_t vrf_id
, struct ethaddr
*rmac
,
5227 struct in_addr originator_ip
, int filter
)
5229 struct bgp
*bgp_vrf
= NULL
; /* bgp VRF instance */
5230 struct bgp
*bgp_def
= NULL
; /* default bgp instance */
5231 struct listnode
*node
= NULL
;
5232 struct bgpevpn
*vpn
= NULL
;
5235 /* get the default instance - required to get the AS number for VRF
5238 bgp_def
= bgp_get_default();
5242 "Cannot process L3VNI %u ADD - default BGP instance not yet created",
5248 /* if the BGP vrf instance doesnt exist - create one */
5249 bgp_vrf
= bgp_lookup_by_name(vrf_id_to_name(vrf_id
));
5254 ret
= bgp_get(&bgp_vrf
, &as
, vrf_id_to_name(vrf_id
),
5255 BGP_INSTANCE_TYPE_VRF
);
5257 case BGP_ERR_MULTIPLE_INSTANCE_NOT_SET
:
5258 flog_err(EC_BGP_MULTI_INSTANCE
,
5259 "'bgp multiple-instance' not present\n");
5261 case BGP_ERR_AS_MISMATCH
:
5262 flog_err(EC_BGP_EVPN_AS_MISMATCH
,
5263 "BGP is already running; AS is %u\n", as
);
5265 case BGP_ERR_INSTANCE_MISMATCH
:
5266 flog_err(EC_BGP_EVPN_INSTANCE_MISMATCH
,
5267 "BGP instance name and AS number mismatch\n");
5271 /* mark as auto created */
5272 SET_FLAG(bgp_vrf
->vrf_flags
, BGP_VRF_AUTO
);
5275 /* associate with l3vni */
5276 bgp_vrf
->l3vni
= l3vni
;
5278 /* set the router mac - to be used in mac-ip routes for this vrf */
5279 memcpy(&bgp_vrf
->rmac
, rmac
, sizeof(struct ethaddr
));
5281 /* set the originator ip */
5282 bgp_vrf
->originator_ip
= originator_ip
;
5284 /* set the right filter - are we using l3vni only for prefix routes? */
5286 SET_FLAG(bgp_vrf
->vrf_flags
, BGP_VRF_L3VNI_PREFIX_ROUTES_ONLY
);
5288 /* auto derive RD/RT */
5289 if (!CHECK_FLAG(bgp_vrf
->vrf_flags
, BGP_VRF_IMPORT_RT_CFGD
))
5290 evpn_auto_rt_import_add_for_vrf(bgp_vrf
);
5291 if (!CHECK_FLAG(bgp_vrf
->vrf_flags
, BGP_VRF_EXPORT_RT_CFGD
))
5292 evpn_auto_rt_export_add_for_vrf(bgp_vrf
);
5293 bgp_evpn_derive_auto_rd_for_vrf(bgp_vrf
);
5295 /* link all corresponding l2vnis */
5296 hash_iterate(bgp_def
->vnihash
,
5297 (void (*)(struct hash_backet
*,
5298 void *))link_l2vni_hash_to_l3vni
,
5301 /* Only update all corresponding type-2 routes if we are advertising two
5302 * labels along with type-2 routes
5305 for (ALL_LIST_ELEMENTS_RO(bgp_vrf
->l2vnis
, node
, vpn
))
5306 update_routes_for_vni(bgp_def
, vpn
);
5308 /* advertise type-5 routes if needed */
5309 update_advertise_vrf_routes(bgp_vrf
);
5311 /* install all remote routes belonging to this l3vni into correspondng
5313 install_routes_for_vrf(bgp_vrf
);
5318 int bgp_evpn_local_l3vni_del(vni_t l3vni
, vrf_id_t vrf_id
)
5320 struct bgp
*bgp_vrf
= NULL
; /* bgp vrf instance */
5321 struct bgp
*bgp_def
= NULL
; /* default bgp instance */
5322 struct listnode
*node
= NULL
;
5323 struct listnode
*next
= NULL
;
5324 struct bgpevpn
*vpn
= NULL
;
5326 bgp_vrf
= bgp_lookup_by_vrf_id(vrf_id
);
5330 "Cannot process L3VNI %u Del - Could not find BGP instance",
5335 bgp_def
= bgp_get_default();
5339 "Cannot process L3VNI %u Del - Could not find default BGP instance",
5344 /* Remove remote routes from BGT VRF even if BGP_VRF_AUTO is configured,
5345 * bgp_delete would not remove/decrement bgp_info of the ip_prefix
5346 * routes. This will uninstalling the routes from zebra and decremnt the
5349 uninstall_routes_for_vrf(bgp_vrf
);
5351 /* delete/withdraw all type-5 routes */
5352 delete_withdraw_vrf_routes(bgp_vrf
);
5354 /* remove the l3vni from vrf instance */
5357 /* remove the Rmac from the BGP vrf */
5358 memset(&bgp_vrf
->rmac
, 0, sizeof(struct ethaddr
));
5361 if (!list_isempty(bgp_vrf
->vrf_import_rtl
)) {
5362 bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf
);
5363 list_delete_all_node(bgp_vrf
->vrf_import_rtl
);
5365 if (!list_isempty(bgp_vrf
->vrf_export_rtl
)) {
5366 list_delete_all_node(bgp_vrf
->vrf_export_rtl
);
5369 /* update all corresponding local mac-ip routes */
5370 if (!CHECK_FLAG(bgp_vrf
->vrf_flags
, BGP_VRF_L3VNI_PREFIX_ROUTES_ONLY
)) {
5371 for (ALL_LIST_ELEMENTS_RO(bgp_vrf
->l2vnis
, node
, vpn
)) {
5372 UNSET_FLAG(vpn
->flags
, VNI_FLAG_USE_TWO_LABELS
);
5373 update_routes_for_vni(bgp_def
, vpn
);
5377 /* If any L2VNIs point to this instance, unlink them. */
5378 for (ALL_LIST_ELEMENTS(bgp_vrf
->l2vnis
, node
, next
, vpn
))
5379 bgpevpn_unlink_from_l3vni(vpn
);
5381 /* Delete the instance if it was autocreated */
5382 if (CHECK_FLAG(bgp_vrf
->vrf_flags
, BGP_VRF_AUTO
))
5383 bgp_delete(bgp_vrf
);
5389 * Handle del of a local VNI.
5391 int bgp_evpn_local_vni_del(struct bgp
*bgp
, vni_t vni
)
5393 struct bgpevpn
*vpn
;
5395 /* Locate VNI hash */
5396 vpn
= bgp_evpn_lookup_vni(bgp
, vni
);
5398 if (bgp_debug_zebra(NULL
))
5400 EC_BGP_EVPN_VPN_VNI
,
5401 "%u: VNI hash entry for VNI %u not found at DEL",
5406 /* Remove all local EVPN routes and schedule for processing (to
5407 * withdraw from peers).
5409 delete_routes_for_vni(bgp
, vpn
);
5412 * tunnel is no longer active, del tunnel ip address from tip_hash
5414 bgp_tip_del(bgp
, &vpn
->originator_ip
);
5416 /* Clear "live" flag and see if hash needs to be freed. */
5417 UNSET_FLAG(vpn
->flags
, VNI_FLAG_LIVE
);
5418 if (!is_vni_configured(vpn
))
5419 bgp_evpn_free(bgp
, vpn
);
5425 * Handle add (or update) of a local VNI. The VNI changes we care
5426 * about are for the local-tunnel-ip and the (tenant) VRF.
5428 int bgp_evpn_local_vni_add(struct bgp
*bgp
, vni_t vni
,
5429 struct in_addr originator_ip
, vrf_id_t tenant_vrf_id
)
5431 struct bgpevpn
*vpn
;
5432 struct prefix_evpn p
;
5434 /* Lookup VNI. If present and no change, exit. */
5435 vpn
= bgp_evpn_lookup_vni(bgp
, vni
);
5438 if (is_vni_live(vpn
)
5439 && IPV4_ADDR_SAME(&vpn
->originator_ip
, &originator_ip
)
5440 && vpn
->tenant_vrf_id
== tenant_vrf_id
)
5441 /* Probably some other param has changed that we don't
5445 /* Update tenant_vrf_id if it has changed. */
5446 if (vpn
->tenant_vrf_id
!= tenant_vrf_id
) {
5447 bgpevpn_unlink_from_l3vni(vpn
);
5448 vpn
->tenant_vrf_id
= tenant_vrf_id
;
5449 bgpevpn_link_to_l3vni(vpn
);
5452 /* If tunnel endpoint IP has changed, update (and delete prior
5453 * type-3 route, if needed.)
5455 if (!IPV4_ADDR_SAME(&vpn
->originator_ip
, &originator_ip
))
5456 handle_tunnel_ip_change(bgp
, vpn
, originator_ip
);
5458 /* Update all routes with new endpoint IP and/or export RT
5461 if (is_vni_live(vpn
))
5462 update_routes_for_vni(bgp
, vpn
);
5465 /* Create or update as appropriate. */
5467 vpn
= bgp_evpn_new(bgp
, vni
, originator_ip
, tenant_vrf_id
);
5471 "%u: Failed to allocate VNI entry for VNI %u - at Add",
5477 /* if the VNI is live already, there is nothing more to do */
5478 if (is_vni_live(vpn
))
5481 /* Mark as "live" */
5482 SET_FLAG(vpn
->flags
, VNI_FLAG_LIVE
);
5484 /* tunnel is now active, add tunnel-ip to db */
5485 bgp_tip_add(bgp
, &originator_ip
);
5487 /* filter routes as nexthop database has changed */
5488 bgp_filter_evpn_routes_upon_martian_nh_change(bgp
);
5490 /* Create EVPN type-3 route and schedule for processing. */
5491 build_evpn_type3_prefix(&p
, vpn
->originator_ip
);
5492 if (update_evpn_route(bgp
, vpn
, &p
, 0, 0)) {
5493 flog_err(EC_BGP_EVPN_ROUTE_CREATE
,
5494 "%u: Type3 route creation failure for VNI %u",
5499 /* If we have learnt and retained remote routes (VTEPs, MACs) for this
5503 install_routes_for_vni(bgp
, vpn
);
5505 /* If we are advertising gateway mac-ip
5506 It needs to be conveyed again to zebra */
5507 bgp_zebra_advertise_gw_macip(bgp
, vpn
->advertise_gw_macip
, vpn
->vni
);
5513 * bgp_evpn_local_es_del
5515 int bgp_evpn_local_es_del(struct bgp
*bgp
,
5517 struct ipaddr
*originator_ip
)
5519 char buf
[ESI_STR_LEN
];
5520 struct evpnes
*es
= NULL
;
5522 if (!bgp
->esihash
) {
5523 flog_err(EC_BGP_ES_CREATE
, "%u: ESI hash not yet created",
5528 /* Lookup ESI hash - should exist. */
5529 es
= bgp_evpn_lookup_es(bgp
, esi
);
5531 flog_warn(EC_BGP_EVPN_ESI
,
5532 "%u: ESI hash entry for ESI %s at Local ES DEL",
5533 bgp
->vrf_id
, esi_to_str(esi
, buf
, sizeof(buf
)));
5537 /* Delete all local EVPN ES routes from ESI table
5538 * and schedule for processing (to withdraw from peers))
5540 delete_routes_for_es(bgp
, es
);
5542 /* free the hash entry */
5543 bgp_evpn_es_free(bgp
, es
);
5549 * bgp_evpn_local_es_add
5551 int bgp_evpn_local_es_add(struct bgp
*bgp
,
5553 struct ipaddr
*originator_ip
)
5555 char buf
[ESI_STR_LEN
];
5556 struct evpnes
*es
= NULL
;
5557 struct prefix_evpn p
;
5559 if (!bgp
->esihash
) {
5560 flog_err(EC_BGP_ES_CREATE
, "%u: ESI hash not yet created",
5565 /* create the new es */
5566 es
= bgp_evpn_lookup_es(bgp
, esi
);
5568 es
= bgp_evpn_es_new(bgp
, esi
, originator_ip
);
5572 "%u: Failed to allocate ES entry for ESI %s - at Local ES Add",
5573 bgp
->vrf_id
, esi_to_str(esi
, buf
, sizeof(buf
)));
5577 UNSET_FLAG(es
->flags
, EVPNES_REMOTE
);
5578 SET_FLAG(es
->flags
, EVPNES_LOCAL
);
5580 build_evpn_type4_prefix(&p
, esi
, originator_ip
->ipaddr_v4
);
5581 if (update_evpn_type4_route(bgp
, es
, &p
)) {
5582 flog_err(EC_BGP_EVPN_ROUTE_CREATE
,
5583 "%u: Type4 route creation failure for ESI %s",
5584 bgp
->vrf_id
, esi_to_str(esi
, buf
, sizeof(buf
)));
5588 /* import all remote ES routes in th ES table */
5589 install_routes_for_es(bgp
, es
);
5595 * Cleanup EVPN information on disable - Need to delete and withdraw
5596 * EVPN routes from peers.
5598 void bgp_evpn_cleanup_on_disable(struct bgp
*bgp
)
5600 hash_iterate(bgp
->vnihash
, (void (*)(struct hash_backet
*,
5601 void *))cleanup_vni_on_disable
,
5606 * Cleanup EVPN information - invoked at the time of bgpd exit or when the
5607 * BGP instance (default) is being freed.
5609 void bgp_evpn_cleanup(struct bgp
*bgp
)
5611 hash_iterate(bgp
->vnihash
,
5612 (void (*)(struct hash_backet
*, void *))free_vni_entry
,
5615 hash_free(bgp
->import_rt_hash
);
5616 bgp
->import_rt_hash
= NULL
;
5618 hash_free(bgp
->vrf_import_rt_hash
);
5619 bgp
->vrf_import_rt_hash
= NULL
;
5621 hash_free(bgp
->vnihash
);
5622 bgp
->vnihash
= NULL
;
5624 hash_free(bgp
->esihash
);
5625 bgp
->esihash
= NULL
;
5627 list_delete(&bgp
->vrf_import_rtl
);
5628 list_delete(&bgp
->vrf_export_rtl
);
5629 list_delete(&bgp
->l2vnis
);
5633 * Initialization for EVPN
5636 * hash for RT to VNI
5638 void bgp_evpn_init(struct bgp
*bgp
)
5641 hash_create(vni_hash_key_make
, vni_hash_cmp
, "BGP VNI Hash");
5643 hash_create(esi_hash_keymake
, esi_cmp
,
5644 "BGP EVPN Local ESI Hash");
5645 bgp
->import_rt_hash
=
5646 hash_create(import_rt_hash_key_make
, import_rt_hash_cmp
,
5647 "BGP Import RT Hash");
5648 bgp
->vrf_import_rt_hash
=
5649 hash_create(vrf_import_rt_hash_key_make
, vrf_import_rt_hash_cmp
,
5650 "BGP VRF Import RT Hash");
5651 bgp
->vrf_import_rtl
= list_new();
5652 bgp
->vrf_import_rtl
->cmp
=
5653 (int (*)(void *, void *))evpn_route_target_cmp
;
5654 bgp
->vrf_import_rtl
->del
= evpn_xxport_delete_ecomm
;
5655 bgp
->vrf_export_rtl
= list_new();
5656 bgp
->vrf_export_rtl
->cmp
=
5657 (int (*)(void *, void *))evpn_route_target_cmp
;
5658 bgp
->vrf_export_rtl
->del
= evpn_xxport_delete_ecomm
;
5659 bgp
->l2vnis
= list_new();
5660 bgp
->l2vnis
->cmp
= (int (*)(void *, void *))vni_hash_cmp
;
5663 void bgp_evpn_vrf_delete(struct bgp
*bgp_vrf
)
5665 bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf
);