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
35 #include "bgpd/bgp_attr_evpn.h"
36 #include "bgpd/bgpd.h"
37 #include "bgpd/bgp_table.h"
38 #include "bgpd/bgp_route.h"
39 #include "bgpd/bgp_attr.h"
40 #include "bgpd/bgp_mplsvpn.h"
41 #include "bgpd/bgp_label.h"
42 #include "bgpd/bgp_evpn.h"
43 #include "bgpd/bgp_evpn_private.h"
44 #include "bgpd/bgp_ecommunity.h"
45 #include "bgpd/bgp_encap_types.h"
46 #include "bgpd/bgp_debug.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
)
60 * Static function declarations
62 static void delete_evpn_route_entry(struct bgp
*bgp
, struct bgpevpn
*vpn
,
63 afi_t afi
, safi_t safi
, struct bgp_node
*rn
,
64 struct bgp_info
**ri
);
65 static int delete_all_vni_routes(struct bgp
*bgp
, struct bgpevpn
*vpn
);
74 static unsigned int vni_hash_key_make(void *p
)
76 struct bgpevpn
*vpn
= p
;
77 return (jhash_1word(vpn
->vni
, 0));
81 * Comparison function for vni hash
83 static int vni_hash_cmp(const void *p1
, const void *p2
)
85 const struct bgpevpn
*vpn1
= p1
;
86 const struct bgpevpn
*vpn2
= p2
;
92 return (vpn1
->vni
== vpn2
->vni
);
96 * Make vrf import route target hash key.
98 static unsigned int vrf_import_rt_hash_key_make(void *p
)
100 struct vrf_irt_node
*irt
= p
;
101 char *pnt
= irt
->rt
.val
;
102 unsigned int key
= 0;
118 * Comparison function for vrf import rt hash
120 static int vrf_import_rt_hash_cmp(const void *p1
, const void *p2
)
122 const struct vrf_irt_node
*irt1
= p1
;
123 const struct vrf_irt_node
*irt2
= p2
;
125 if (irt1
== NULL
&& irt2
== NULL
)
128 if (irt1
== NULL
|| irt2
== NULL
)
131 return (memcmp(irt1
->rt
.val
, irt2
->rt
.val
, ECOMMUNITY_SIZE
) == 0);
135 * Create a new vrf import_rt in default instance
137 static struct vrf_irt_node
*vrf_import_rt_new(struct ecommunity_val
*rt
)
139 struct bgp
*bgp_def
= NULL
;
140 struct vrf_irt_node
*irt
;
142 bgp_def
= bgp_get_default();
144 zlog_err("vrf import rt new - def instance not created yet");
148 irt
= XCALLOC(MTYPE_BGP_EVPN_VRF_IMPORT_RT
,
149 sizeof(struct vrf_irt_node
));
154 irt
->vrfs
= list_new();
157 if (!hash_get(bgp_def
->vrf_import_rt_hash
, irt
, hash_alloc_intern
)) {
158 XFREE(MTYPE_BGP_EVPN_VRF_IMPORT_RT
, irt
);
166 * Free the vrf import rt node
168 static void vrf_import_rt_free(struct vrf_irt_node
*irt
)
170 struct bgp
*bgp_def
= NULL
;
172 bgp_def
= bgp_get_default();
174 zlog_err("vrf import rt free - def instance not created yet");
178 hash_release(bgp_def
->vrf_import_rt_hash
, irt
);
179 XFREE(MTYPE_BGP_EVPN_VRF_IMPORT_RT
, irt
);
183 * Function to lookup Import RT node - used to map a RT to set of
184 * VNIs importing routes with that RT.
186 static struct vrf_irt_node
*lookup_vrf_import_rt(struct ecommunity_val
*rt
)
188 struct bgp
*bgp_def
= NULL
;
189 struct vrf_irt_node
*irt
;
190 struct vrf_irt_node tmp
;
192 bgp_def
= bgp_get_default();
194 zlog_err("vrf import rt lookup - def instance not created yet");
198 memset(&tmp
, 0, sizeof(struct vrf_irt_node
));
199 memcpy(&tmp
.rt
, rt
, ECOMMUNITY_SIZE
);
200 irt
= hash_lookup(bgp_def
->vrf_import_rt_hash
, &tmp
);
205 * Is specified VRF present on the RT's list of "importing" VRFs?
207 static int is_vrf_present_in_irt_vrfs(struct list
*vrfs
,
210 struct listnode
*node
= NULL
, *nnode
= NULL
;
211 struct bgp
*tmp_bgp_vrf
= NULL
;
213 for (ALL_LIST_ELEMENTS(vrfs
, node
, nnode
, tmp_bgp_vrf
)) {
214 if (tmp_bgp_vrf
== bgp_vrf
)
221 * Make import route target hash key.
223 static unsigned int import_rt_hash_key_make(void *p
)
225 struct irt_node
*irt
= p
;
226 char *pnt
= irt
->rt
.val
;
227 unsigned int key
= 0;
243 * Comparison function for import rt hash
245 static int import_rt_hash_cmp(const void *p1
, const void *p2
)
247 const struct irt_node
*irt1
= p1
;
248 const struct irt_node
*irt2
= p2
;
250 if (irt1
== NULL
&& irt2
== NULL
)
253 if (irt1
== NULL
|| irt2
== NULL
)
256 return (memcmp(irt1
->rt
.val
, irt2
->rt
.val
, ECOMMUNITY_SIZE
) == 0);
260 * Create a new import_rt
262 static struct irt_node
*import_rt_new(struct bgp
*bgp
,
263 struct ecommunity_val
*rt
)
265 struct irt_node
*irt
;
270 irt
= XCALLOC(MTYPE_BGP_EVPN_IMPORT_RT
, sizeof(struct irt_node
));
275 irt
->vnis
= list_new();
278 if (!hash_get(bgp
->import_rt_hash
, irt
, hash_alloc_intern
)) {
279 XFREE(MTYPE_BGP_EVPN_IMPORT_RT
, irt
);
287 * Free the import rt node
289 static void import_rt_free(struct bgp
*bgp
, struct irt_node
*irt
)
291 hash_release(bgp
->import_rt_hash
, irt
);
292 XFREE(MTYPE_BGP_EVPN_IMPORT_RT
, irt
);
296 * Function to lookup Import RT node - used to map a RT to set of
297 * VNIs importing routes with that RT.
299 static struct irt_node
*lookup_import_rt(struct bgp
*bgp
,
300 struct ecommunity_val
*rt
)
302 struct irt_node
*irt
;
305 memset(&tmp
, 0, sizeof(struct irt_node
));
306 memcpy(&tmp
.rt
, rt
, ECOMMUNITY_SIZE
);
307 irt
= hash_lookup(bgp
->import_rt_hash
, &tmp
);
312 * Is specified VNI present on the RT's list of "importing" VNIs?
314 static int is_vni_present_in_irt_vnis(struct list
*vnis
, struct bgpevpn
*vpn
)
316 struct listnode
*node
, *nnode
;
317 struct bgpevpn
*tmp_vpn
;
319 for (ALL_LIST_ELEMENTS(vnis
, node
, nnode
, tmp_vpn
)) {
328 * Compare Route Targets.
330 static int evpn_route_target_cmp(struct ecommunity
*ecom1
,
331 struct ecommunity
*ecom2
)
339 if (!ecom1
&& !ecom2
)
342 if (ecom1
->str
&& !ecom2
->str
)
345 if (!ecom1
->str
&& ecom2
->str
)
348 if (!ecom1
->str
&& !ecom2
->str
)
351 return strcmp(ecom1
->str
, ecom2
->str
);
355 * Mask off global-admin field of specified extended community (RT),
356 * just retain the local-admin field.
358 static inline void mask_ecom_global_admin(struct ecommunity_val
*dst
,
359 struct ecommunity_val
*src
)
365 if (type
== ECOMMUNITY_ENCODE_AS
) {
366 dst
->val
[2] = dst
->val
[3] = 0;
367 } else if (type
== ECOMMUNITY_ENCODE_AS4
368 || type
== ECOMMUNITY_ENCODE_IP
) {
369 dst
->val
[2] = dst
->val
[3] = 0;
370 dst
->val
[4] = dst
->val
[5] = 0;
375 * Map one RT to specified VRF.
376 * bgp_vrf = BGP vrf instance
378 static void map_vrf_to_rt(struct bgp
*bgp_vrf
,
379 struct ecommunity_val
*eval
)
381 struct vrf_irt_node
*irt
= NULL
;
382 struct ecommunity_val eval_tmp
;
384 /* If using "automatic" RT,
385 * we only care about the local-admin sub-field.
386 * This is to facilitate using L3VNI(VRF-VNI)
387 * as the RT for EBGP peering too.
389 memcpy(&eval_tmp
, eval
, ECOMMUNITY_SIZE
);
390 if (!CHECK_FLAG(bgp_vrf
->vrf_flags
,
391 BGP_VRF_IMPORT_RT_CFGD
))
392 mask_ecom_global_admin(&eval_tmp
, eval
);
394 irt
= lookup_vrf_import_rt(&eval_tmp
);
395 if (irt
&& irt
->vrfs
)
396 if (is_vrf_present_in_irt_vrfs(irt
->vrfs
, bgp_vrf
))
397 /* Already mapped. */
401 irt
= vrf_import_rt_new(&eval_tmp
);
405 /* Add VRF to the list for this RT. */
406 listnode_add(irt
->vrfs
, bgp_vrf
);
410 * Unmap specified VRF from specified RT. If there are no other
411 * VRFs for this RT, then the RT hash is deleted.
412 * bgp_vrf: BGP VRF specific instance
414 static void unmap_vrf_from_rt(struct bgp
*bgp_vrf
,
415 struct vrf_irt_node
*irt
)
417 /* Delete VRF from list for this RT. */
418 listnode_delete(irt
->vrfs
, bgp_vrf
);
419 if (!listnode_head(irt
->vrfs
)) {
420 list_delete_and_null(&irt
->vrfs
);
421 vrf_import_rt_free(irt
);
426 * Map one RT to specified VNI.
428 static void map_vni_to_rt(struct bgp
*bgp
, struct bgpevpn
*vpn
,
429 struct ecommunity_val
*eval
)
431 struct irt_node
*irt
;
432 struct ecommunity_val eval_tmp
;
434 /* If using "automatic" RT, we only care about the local-admin
436 * This is to facilitate using VNI as the RT for EBGP peering too.
438 memcpy(&eval_tmp
, eval
, ECOMMUNITY_SIZE
);
439 if (!is_import_rt_configured(vpn
))
440 mask_ecom_global_admin(&eval_tmp
, eval
);
442 irt
= lookup_import_rt(bgp
, &eval_tmp
);
443 if (irt
&& irt
->vnis
)
444 if (is_vni_present_in_irt_vnis(irt
->vnis
, vpn
))
445 /* Already mapped. */
449 irt
= import_rt_new(bgp
, &eval_tmp
);
453 /* Add VNI to the hash list for this RT. */
454 listnode_add(irt
->vnis
, vpn
);
458 * Unmap specified VNI from specified RT. If there are no other
459 * VNIs for this RT, then the RT hash is deleted.
461 static void unmap_vni_from_rt(struct bgp
*bgp
, struct bgpevpn
*vpn
,
462 struct irt_node
*irt
)
464 /* Delete VNI from hash list for this RT. */
465 listnode_delete(irt
->vnis
, vpn
);
466 if (!listnode_head(irt
->vnis
)) {
467 list_delete_and_null(&irt
->vnis
);
468 import_rt_free(bgp
, irt
);
473 * Create RT extended community automatically from passed information:
474 * of the form AS:VNI.
475 * NOTE: We use only the lower 16 bits of the AS. This is sufficient as
476 * the need is to get a RT value that will be unique across different
477 * VNIs but the same across routers (in the same AS) for a particular
480 static void form_auto_rt(struct bgp
*bgp
, vni_t vni
, struct list
*rtl
)
482 struct ecommunity_val eval
;
483 struct ecommunity
*ecomadd
;
485 encode_route_target_as((bgp
->as
& 0xFFFF), vni
, &eval
);
487 ecomadd
= ecommunity_new();
488 ecommunity_add_val(ecomadd
, &eval
);
489 listnode_add_sort(rtl
, ecomadd
);
493 * Derive RD and RT for a VNI automatically. Invoked at the time of
496 static void derive_rd_rt_for_vni(struct bgp
*bgp
, struct bgpevpn
*vpn
)
498 bgp_evpn_derive_auto_rd(bgp
, vpn
);
499 bgp_evpn_derive_auto_rt_import(bgp
, vpn
);
500 bgp_evpn_derive_auto_rt_export(bgp
, vpn
);
504 * Add (update) or delete MACIP from zebra.
506 static int bgp_zebra_send_remote_macip(struct bgp
*bgp
, struct bgpevpn
*vpn
,
507 struct prefix_evpn
*p
,
508 struct in_addr remote_vtep_ip
, int add
,
513 char buf1
[ETHER_ADDR_STRLEN
];
514 char buf2
[INET6_ADDRSTRLEN
];
515 char buf3
[INET6_ADDRSTRLEN
];
518 if (!zclient
|| zclient
->sock
< 0)
521 /* Don't try to register if Zebra doesn't know of this instance. */
522 if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp
))
528 zclient_create_header(s
, add
? ZEBRA_REMOTE_MACIP_ADD
529 : ZEBRA_REMOTE_MACIP_DEL
,
531 stream_putl(s
, vpn
->vni
);
532 stream_put(s
, &p
->prefix
.mac
.octet
, ETH_ALEN
); /* Mac Addr */
533 /* IP address length and IP address, if any. */
534 if (IS_EVPN_PREFIX_IPADDR_NONE(p
))
537 ipa_len
= IS_EVPN_PREFIX_IPADDR_V4(p
) ? IPV4_MAX_BYTELEN
539 stream_putl(s
, ipa_len
);
540 stream_put(s
, &p
->prefix
.ip
.ip
.addr
, ipa_len
);
542 stream_put_in_addr(s
, &remote_vtep_ip
);
544 /* TX MAC sticky status */
546 stream_putc(s
, sticky
);
548 stream_putw_at(s
, 0, stream_get_endp(s
));
550 if (bgp_debug_zebra(NULL
))
551 zlog_debug("Tx %s MACIP, VNI %u %sMAC %s IP %s remote VTEP %s",
552 add
? "ADD" : "DEL", vpn
->vni
,
553 sticky
? "sticky " : "",
554 prefix_mac2str(&p
->prefix
.mac
, buf1
, sizeof(buf1
)),
555 ipaddr2str(&p
->prefix
.ip
, buf3
, sizeof(buf3
)),
556 inet_ntop(AF_INET
, &remote_vtep_ip
, buf2
,
559 return zclient_send_message(zclient
);
563 * Add (update) or delete remote VTEP from zebra.
565 static int bgp_zebra_send_remote_vtep(struct bgp
*bgp
, struct bgpevpn
*vpn
,
566 struct prefix_evpn
*p
, int add
)
571 if (!zclient
|| zclient
->sock
< 0)
574 /* Don't try to register if Zebra doesn't know of this instance. */
575 if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp
))
581 zclient_create_header(s
, add
? ZEBRA_REMOTE_VTEP_ADD
582 : ZEBRA_REMOTE_VTEP_DEL
,
584 stream_putl(s
, vpn
->vni
);
585 if (IS_EVPN_PREFIX_IPADDR_V4(p
))
586 stream_put_in_addr(s
, &p
->prefix
.ip
.ipaddr_v4
);
587 else if (IS_EVPN_PREFIX_IPADDR_V6(p
)) {
589 "Bad remote IP when trying to %s remote VTEP for VNI %u",
590 add
? "ADD" : "DEL", vpn
->vni
);
594 stream_putw_at(s
, 0, stream_get_endp(s
));
596 if (bgp_debug_zebra(NULL
))
597 zlog_debug("Tx %s Remote VTEP, VNI %u remote VTEP %s",
598 add
? "ADD" : "DEL", vpn
->vni
,
599 inet_ntoa(p
->prefix
.ip
.ipaddr_v4
));
601 return zclient_send_message(zclient
);
605 * Build extended communities for EVPN prefix route.
607 static void build_evpn_type5_route_extcomm(struct bgp
*bgp_vrf
,
610 struct ecommunity ecom_encap
;
611 struct ecommunity ecom_rmac
;
612 struct ecommunity_val eval
;
613 struct ecommunity_val eval_rmac
;
614 bgp_encap_types tnl_type
;
615 struct listnode
*node
, *nnode
;
616 struct ecommunity
*ecom
;
617 struct list
*vrf_export_rtl
= NULL
;
620 tnl_type
= BGP_ENCAP_TYPE_VXLAN
;
621 memset(&ecom_encap
, 0, sizeof(ecom_encap
));
622 encode_encap_extcomm(tnl_type
, &eval
);
624 ecom_encap
.val
= (u_int8_t
*)eval
.val
;
627 attr
->ecommunity
= ecommunity_dup(&ecom_encap
);
629 /* Add the export RTs for L3VNI/VRF */
630 vrf_export_rtl
= bgp_vrf
->vrf_export_rtl
;
631 if (vrf_export_rtl
&& !list_isempty(vrf_export_rtl
)) {
632 for (ALL_LIST_ELEMENTS(vrf_export_rtl
, node
, nnode
, ecom
))
633 attr
->ecommunity
= ecommunity_merge(attr
->ecommunity
,
637 /* add the router mac extended community */
638 if (!is_zero_mac(&attr
->rmac
)) {
639 memset(&ecom_rmac
, 0, sizeof(ecom_rmac
));
640 encode_rmac_extcomm(&eval_rmac
, &attr
->rmac
);
642 ecom_rmac
.val
= (uint8_t *)eval_rmac
.val
;
643 attr
->ecommunity
= ecommunity_merge(attr
->ecommunity
,
647 attr
->flag
|= ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES
);
651 * Build extended communities for EVPN route. RT and ENCAP are
652 * applicable to all routes.
653 * TODO: currently kernel doesnt support ipv6 routes with ipv4 nexthops.
654 * This means that we can't do symmetric routing for ipv6 hosts routes
655 * in the same way as ipv4 host routes.
656 * We wont attach l3-vni related RTs for ipv6 routes.
657 * For now, We will only adevrtise ipv4 host routes
658 * with L3-VNI related ext-comm.
660 static void build_evpn_route_extcomm(struct bgpevpn
*vpn
, struct attr
*attr
,
663 struct ecommunity ecom_encap
;
664 struct ecommunity ecom_sticky
;
665 struct ecommunity ecom_rmac
;
666 struct ecommunity_val eval
;
667 struct ecommunity_val eval_sticky
;
668 struct ecommunity_val eval_rmac
;
669 bgp_encap_types tnl_type
;
670 struct listnode
*node
, *nnode
;
671 struct ecommunity
*ecom
;
673 struct list
*vrf_export_rtl
= NULL
;
676 tnl_type
= BGP_ENCAP_TYPE_VXLAN
;
677 memset(&ecom_encap
, 0, sizeof(ecom_encap
));
678 encode_encap_extcomm(tnl_type
, &eval
);
680 ecom_encap
.val
= (u_int8_t
*)eval
.val
;
683 attr
->ecommunity
= ecommunity_dup(&ecom_encap
);
685 /* Add the export RTs for L2VNI */
686 for (ALL_LIST_ELEMENTS(vpn
->export_rtl
, node
, nnode
, ecom
))
687 attr
->ecommunity
= ecommunity_merge(attr
->ecommunity
, ecom
);
689 /* Add the export RTs for L3VNI - currently only supported for IPV4 host
692 vrf_export_rtl
= bgpevpn_get_vrf_export_rtl(vpn
);
693 if (vrf_export_rtl
&& !list_isempty(vrf_export_rtl
)) {
694 for (ALL_LIST_ELEMENTS(vrf_export_rtl
, node
, nnode
,
697 ecommunity_merge(attr
->ecommunity
,
704 memset(&ecom_sticky
, 0, sizeof(ecom_sticky
));
705 encode_mac_mobility_extcomm(1, seqnum
, &eval_sticky
);
706 ecom_sticky
.size
= 1;
707 ecom_sticky
.val
= (u_int8_t
*)eval_sticky
.val
;
709 ecommunity_merge(attr
->ecommunity
, &ecom_sticky
);
712 if (afi
== AFI_IP
&& !is_zero_mac(&attr
->rmac
)) {
713 memset(&ecom_rmac
, 0, sizeof(ecom_rmac
));
714 encode_rmac_extcomm(&eval_rmac
, &attr
->rmac
);
716 ecom_rmac
.val
= (uint8_t *)eval_rmac
.val
;
717 attr
->ecommunity
= ecommunity_merge(attr
->ecommunity
,
721 attr
->flag
|= ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES
);
725 * Add MAC mobility extended community to attribute.
727 static void add_mac_mobility_to_attr(u_int32_t seq_num
, struct attr
*attr
)
729 struct ecommunity ecom_tmp
;
730 struct ecommunity_val eval
;
731 u_int8_t
*ecom_val_ptr
;
738 encode_mac_mobility_extcomm(0, seq_num
, &eval
);
740 /* Find current MM ecommunity */
743 if (attr
->ecommunity
) {
744 for (i
= 0; i
< attr
->ecommunity
->size
; i
++) {
745 pnt
= attr
->ecommunity
->val
+ (i
* 8);
749 if (type
== ECOMMUNITY_ENCODE_EVPN
751 == ECOMMUNITY_EVPN_SUBTYPE_MACMOBILITY
) {
753 (u_int8_t
*)(attr
->ecommunity
->val
760 /* Update the existing MM ecommunity */
762 memcpy(ecom_val_ptr
, eval
.val
, sizeof(char) * ECOMMUNITY_SIZE
);
764 /* Add MM to existing */
766 memset(&ecom_tmp
, 0, sizeof(ecom_tmp
));
768 ecom_tmp
.val
= (u_int8_t
*)eval
.val
;
771 ecommunity_merge(attr
->ecommunity
, &ecom_tmp
);
775 /* Install EVPN route into zebra. */
776 static int evpn_zebra_install(struct bgp
*bgp
, struct bgpevpn
*vpn
,
777 struct prefix_evpn
*p
,
778 struct in_addr remote_vtep_ip
, u_char sticky
)
782 if (p
->prefix
.route_type
== BGP_EVPN_MAC_IP_ROUTE
)
783 ret
= bgp_zebra_send_remote_macip(bgp
, vpn
, p
, remote_vtep_ip
,
786 ret
= bgp_zebra_send_remote_vtep(bgp
, vpn
, p
, 1);
791 /* Uninstall EVPN route from zebra. */
792 static int evpn_zebra_uninstall(struct bgp
*bgp
, struct bgpevpn
*vpn
,
793 struct prefix_evpn
*p
,
794 struct in_addr remote_vtep_ip
)
798 if (p
->prefix
.route_type
== BGP_EVPN_MAC_IP_ROUTE
)
799 ret
= bgp_zebra_send_remote_macip(bgp
, vpn
, p
, remote_vtep_ip
,
802 ret
= bgp_zebra_send_remote_vtep(bgp
, vpn
, p
, 0);
808 * Due to MAC mobility, the prior "local" best route has been supplanted
809 * by a "remote" best route. The prior route has to be deleted and withdrawn
812 static void evpn_delete_old_local_route(struct bgp
*bgp
, struct bgpevpn
*vpn
,
814 struct bgp_info
*old_local
)
816 struct bgp_node
*global_rn
;
818 afi_t afi
= AFI_L2VPN
;
819 safi_t safi
= SAFI_EVPN
;
821 /* Locate route node in the global EVPN routing table. Note that
822 * this table is a 2-level tree (RD-level + Prefix-level) similar to
825 global_rn
= bgp_afi_node_lookup(bgp
->rib
[afi
][safi
], afi
, safi
,
826 (struct prefix
*)&rn
->p
, &vpn
->prd
);
828 /* Delete route entry in the global EVPN table. */
829 delete_evpn_route_entry(bgp
, vpn
, afi
, safi
, global_rn
, &ri
);
831 /* Schedule for processing - withdraws to peers happen from
835 bgp_process(bgp
, global_rn
, afi
, safi
);
836 bgp_unlock_node(global_rn
);
839 /* Delete route entry in the VNI route table, caller to remove. */
840 bgp_info_delete(rn
, old_local
);
844 * Calculate the best path for an EVPN route. Install/update best path in zebra,
847 static int evpn_route_select_install(struct bgp
*bgp
, struct bgpevpn
*vpn
,
850 struct bgp_info
*old_select
, *new_select
;
851 struct bgp_info_pair old_and_new
;
852 afi_t afi
= AFI_L2VPN
;
853 safi_t safi
= SAFI_EVPN
;
856 /* Compute the best path. */
857 bgp_best_selection(bgp
, rn
, &bgp
->maxpaths
[afi
][safi
], &old_and_new
,
859 old_select
= old_and_new
.old
;
860 new_select
= old_and_new
.new;
862 /* If the best path hasn't changed - see if there is still something to
866 if (old_select
&& old_select
== new_select
867 && old_select
->type
== ZEBRA_ROUTE_BGP
868 && old_select
->sub_type
== BGP_ROUTE_NORMAL
869 && !CHECK_FLAG(rn
->flags
, BGP_NODE_USER_CLEAR
)
870 && !CHECK_FLAG(old_select
->flags
, BGP_INFO_ATTR_CHANGED
)
871 && !bgp
->addpath_tx_used
[afi
][safi
]) {
872 if (bgp_zebra_has_route_changed(rn
, old_select
))
873 ret
= evpn_zebra_install(bgp
, vpn
,
874 (struct prefix_evpn
*)&rn
->p
,
875 old_select
->attr
->nexthop
,
876 old_select
->attr
->sticky
);
877 UNSET_FLAG(old_select
->flags
, BGP_INFO_MULTIPATH_CHG
);
878 bgp_zebra_clear_route_change_flags(rn
);
882 /* If the user did a "clear" this flag will be set */
883 UNSET_FLAG(rn
->flags
, BGP_NODE_USER_CLEAR
);
885 /* bestpath has changed; update relevant fields and install or uninstall
886 * into the zebra RIB.
888 if (old_select
|| new_select
)
889 bgp_bump_version(rn
);
892 bgp_info_unset_flag(rn
, old_select
, BGP_INFO_SELECTED
);
894 bgp_info_set_flag(rn
, new_select
, BGP_INFO_SELECTED
);
895 bgp_info_unset_flag(rn
, new_select
, BGP_INFO_ATTR_CHANGED
);
896 UNSET_FLAG(new_select
->flags
, BGP_INFO_MULTIPATH_CHG
);
899 if (new_select
&& new_select
->type
== ZEBRA_ROUTE_BGP
900 && new_select
->sub_type
== BGP_ROUTE_NORMAL
) {
901 ret
= evpn_zebra_install(bgp
, vpn
, (struct prefix_evpn
*)&rn
->p
,
902 new_select
->attr
->nexthop
,
903 new_select
->attr
->sticky
);
904 /* If an old best existed and it was a "local" route, the only
906 * it would be supplanted is due to MAC mobility procedures. So,
908 * need to do an implicit delete and withdraw that route from
911 if (old_select
&& old_select
->peer
== bgp
->peer_self
912 && old_select
->type
== ZEBRA_ROUTE_BGP
913 && old_select
->sub_type
== BGP_ROUTE_STATIC
)
914 evpn_delete_old_local_route(bgp
, vpn
, rn
, old_select
);
916 if (old_select
&& old_select
->type
== ZEBRA_ROUTE_BGP
917 && old_select
->sub_type
== BGP_ROUTE_NORMAL
)
918 ret
= evpn_zebra_uninstall(bgp
, vpn
,
919 (struct prefix_evpn
*)&rn
->p
,
920 old_select
->attr
->nexthop
);
923 /* Clear any route change flags. */
924 bgp_zebra_clear_route_change_flags(rn
);
926 /* Reap old select bgp_info, if it has been removed */
927 if (old_select
&& CHECK_FLAG(old_select
->flags
, BGP_INFO_REMOVED
))
928 bgp_info_reap(rn
, old_select
);
935 * Return true if the local ri for this rn has sticky set
937 static int evpn_route_is_sticky(struct bgp
*bgp
, struct bgp_node
*rn
)
939 struct bgp_info
*tmp_ri
;
940 struct bgp_info
*local_ri
;
943 for (tmp_ri
= rn
->info
; tmp_ri
; tmp_ri
= tmp_ri
->next
) {
944 if (tmp_ri
->peer
== bgp
->peer_self
945 && tmp_ri
->type
== ZEBRA_ROUTE_BGP
946 && tmp_ri
->sub_type
== BGP_ROUTE_STATIC
)
953 return local_ri
->attr
->sticky
;
956 static int update_evpn_type5_route_entry(struct bgp
*bgp_def
,
957 struct bgp
*bgp_vrf
, afi_t afi
,
958 safi_t safi
, struct bgp_node
*rn
,
961 struct attr
*attr_new
= NULL
;
962 struct bgp_info
*ri
= NULL
;
963 mpls_label_t label
= MPLS_INVALID_LABEL
;
964 struct bgp_info
*local_ri
= NULL
;
965 struct bgp_info
*tmp_ri
= NULL
;
968 /* locate the local route entry if any */
969 for (tmp_ri
= rn
->info
; tmp_ri
; tmp_ri
= tmp_ri
->next
) {
970 if (tmp_ri
->peer
== bgp_def
->peer_self
971 && tmp_ri
->type
== ZEBRA_ROUTE_BGP
972 && tmp_ri
->sub_type
== BGP_ROUTE_STATIC
)
976 /* create a new route entry if one doesnt exist.
977 Otherwise see if route attr has changed */
980 /* Add (or update) attribute to hash. */
981 attr_new
= bgp_attr_intern(attr
);
983 /* create the route info from attribute */
984 ri
= info_make(ZEBRA_ROUTE_BGP
, BGP_ROUTE_STATIC
, 0,
985 bgp_def
->peer_self
, attr_new
, rn
);
986 SET_FLAG(ri
->flags
, BGP_INFO_VALID
);
988 /* L3-VNI goes in the label2 field */
989 bgp_info_extra_get(ri
);
990 vni2label(bgp_vrf
->l3vni
, &label
);
991 memcpy(&ri
->extra
->label2
, &label
, BGP_LABEL_BYTES
);
993 /* add the route entry to route node*/
994 bgp_info_add(rn
, ri
);
998 if (!attrhash_cmp(tmp_ri
->attr
, attr
)) {
999 /* The attribute has changed. */
1000 /* Add (or update) attribute to hash. */
1001 attr_new
= bgp_attr_intern(attr
);
1002 bgp_info_set_flag(rn
, tmp_ri
, BGP_INFO_ATTR_CHANGED
);
1004 /* Restore route, if needed. */
1005 if (CHECK_FLAG(tmp_ri
->flags
, BGP_INFO_REMOVED
))
1006 bgp_info_restore(rn
, tmp_ri
);
1008 /* Unintern existing, set to new. */
1009 bgp_attr_unintern(&tmp_ri
->attr
);
1010 tmp_ri
->attr
= attr_new
;
1011 tmp_ri
->uptime
= bgp_clock();
1017 /* update evpn type-5 route entry */
1018 static int update_evpn_type5_route(struct bgp
*bgp_vrf
,
1019 struct prefix_evpn
*evp
)
1021 afi_t afi
= AFI_L2VPN
;
1022 safi_t safi
= SAFI_EVPN
;
1024 struct bgp_node
*rn
= NULL
;
1025 struct bgp
*bgp_def
= NULL
;
1027 bgp_def
= bgp_get_default();
1031 /* build path attribute for this route */
1032 memset(&attr
, 0, sizeof(struct attr
));
1033 bgp_attr_default_set(&attr
, BGP_ORIGIN_IGP
);
1034 attr
.nexthop
= bgp_vrf
->originator_ip
;
1035 attr
.mp_nexthop_global_in
= bgp_vrf
->originator_ip
;
1036 attr
.mp_nexthop_len
= BGP_ATTR_NHLEN_IPV4
;
1037 memcpy(&attr
.rmac
, &bgp_vrf
->rmac
, sizeof(struct ethaddr
));
1039 /* Setup RT and encap extended community */
1040 build_evpn_type5_route_extcomm(bgp_vrf
, &attr
);
1042 /* get the route node in global table */
1043 rn
= bgp_afi_node_get(bgp_def
->rib
[afi
][safi
], afi
, safi
,
1044 (struct prefix
*)evp
,
1048 /* create or update the route entry within the route node */
1049 update_evpn_type5_route_entry(bgp_def
, bgp_vrf
,
1053 /* schedule for processing and unlock node */
1054 bgp_process(bgp_def
, rn
, afi
, safi
);
1055 bgp_unlock_node(rn
);
1057 /* uninten temporary */
1058 aspath_unintern(&attr
.aspath
);
1063 * Create or update EVPN route entry. This could be in the VNI route table
1064 * or the global route table.
1066 static int update_evpn_route_entry(struct bgp
*bgp
, struct bgpevpn
*vpn
,
1067 afi_t afi
, safi_t safi
, struct bgp_node
*rn
,
1068 struct attr
*attr
, int add
, int vni_table
,
1069 struct bgp_info
**ri
, u_char flags
)
1071 struct bgp_info
*tmp_ri
;
1072 struct bgp_info
*local_ri
, *remote_ri
;
1073 struct attr
*attr_new
;
1074 mpls_label_t label
= MPLS_INVALID_LABEL
;
1075 int route_change
= 1;
1080 /* See if this is an update of an existing route, or a new add. Also,
1081 * identify if already known from remote, and if so, the one with the
1082 * highest sequence number; this is only when adding to the VNI routing
1085 local_ri
= remote_ri
= NULL
;
1086 for (tmp_ri
= rn
->info
; tmp_ri
; tmp_ri
= tmp_ri
->next
) {
1087 if (tmp_ri
->peer
== bgp
->peer_self
1088 && tmp_ri
->type
== ZEBRA_ROUTE_BGP
1089 && tmp_ri
->sub_type
== BGP_ROUTE_STATIC
)
1092 if (tmp_ri
->type
== ZEBRA_ROUTE_BGP
1093 && tmp_ri
->sub_type
== BGP_ROUTE_NORMAL
1094 && CHECK_FLAG(tmp_ri
->flags
, BGP_INFO_VALID
)) {
1097 else if (mac_mobility_seqnum(tmp_ri
->attr
)
1098 > mac_mobility_seqnum(remote_ri
->attr
))
1104 /* If route doesn't exist already, create a new one, if told to.
1105 * Otherwise act based on whether the attributes of the route have
1108 if (!local_ri
&& !add
)
1112 /* When learnt locally for the first time but already known from
1113 * remote, we have to initiate appropriate MAC mobility steps.
1115 * is applicable when updating the VNI routing table.
1116 * We need to skip mobility steps for g/w macs (local mac on g/w
1117 * SVI) advertised in EVPN.
1118 * This will ensure that local routes are preferred for g/w macs
1120 if (remote_ri
&& !CHECK_FLAG(flags
, ZEBRA_MAC_TYPE_GW
)) {
1121 u_int32_t cur_seqnum
;
1123 /* Add MM extended community to route. */
1124 cur_seqnum
= mac_mobility_seqnum(remote_ri
->attr
);
1125 add_mac_mobility_to_attr(cur_seqnum
+ 1, attr
);
1128 /* Add (or update) attribute to hash. */
1129 attr_new
= bgp_attr_intern(attr
);
1131 /* Extract MAC mobility sequence number, if any. */
1132 attr_new
->mm_seqnum
=
1133 bgp_attr_mac_mobility_seqnum(attr_new
, &sticky
);
1134 attr_new
->sticky
= sticky
;
1136 /* Create new route with its attribute. */
1137 tmp_ri
= info_make(ZEBRA_ROUTE_BGP
, BGP_ROUTE_STATIC
, 0,
1138 bgp
->peer_self
, attr_new
, rn
);
1139 SET_FLAG(tmp_ri
->flags
, BGP_INFO_VALID
);
1140 bgp_info_extra_get(tmp_ri
);
1142 /* The VNI goes into the 'label' field of the route */
1143 vni2label(vpn
->vni
, &label
);
1145 memcpy(&tmp_ri
->extra
->label
, &label
, BGP_LABEL_BYTES
);
1146 bgp_info_add(rn
, tmp_ri
);
1149 if (attrhash_cmp(tmp_ri
->attr
, attr
)
1150 && !CHECK_FLAG(tmp_ri
->flags
, BGP_INFO_REMOVED
))
1153 /* The attribute has changed. */
1154 /* Add (or update) attribute to hash. */
1155 attr_new
= bgp_attr_intern(attr
);
1156 bgp_info_set_flag(rn
, tmp_ri
, BGP_INFO_ATTR_CHANGED
);
1158 /* Restore route, if needed. */
1159 if (CHECK_FLAG(tmp_ri
->flags
, BGP_INFO_REMOVED
))
1160 bgp_info_restore(rn
, tmp_ri
);
1162 /* Unintern existing, set to new. */
1163 bgp_attr_unintern(&tmp_ri
->attr
);
1164 tmp_ri
->attr
= attr_new
;
1165 tmp_ri
->uptime
= bgp_clock();
1169 /* Return back the route entry. */
1171 return route_change
;
1175 * Create or update EVPN route (of type based on prefix) for specified VNI
1176 * and schedule for processing.
1178 static int update_evpn_route(struct bgp
*bgp
, struct bgpevpn
*vpn
,
1179 struct prefix_evpn
*p
, u_char flags
)
1181 struct bgp_node
*rn
;
1183 struct attr
*attr_new
;
1184 struct bgp_info
*ri
;
1185 afi_t afi
= AFI_L2VPN
;
1186 safi_t safi
= SAFI_EVPN
;
1189 memset(&attr
, 0, sizeof(struct attr
));
1191 /* Build path-attribute for this route. */
1192 bgp_attr_default_set(&attr
, BGP_ORIGIN_IGP
);
1193 attr
.nexthop
= vpn
->originator_ip
;
1194 attr
.mp_nexthop_global_in
= vpn
->originator_ip
;
1195 attr
.mp_nexthop_len
= BGP_ATTR_NHLEN_IPV4
;
1196 attr
.sticky
= CHECK_FLAG(flags
, ZEBRA_MAC_TYPE_STICKY
) ? 1 : 0;
1197 bgpevpn_get_rmac(vpn
, &attr
.rmac
);
1199 /* Set up RT and ENCAP extended community. */
1200 build_evpn_route_extcomm(vpn
, &attr
,
1201 IS_EVPN_PREFIX_IPADDR_V4(p
) ?
1204 /* First, create (or fetch) route node within the VNI. */
1205 /* NOTE: There is no RD here. */
1206 rn
= bgp_node_get(vpn
->route_table
, (struct prefix
*)p
);
1208 /* Create or update route entry. */
1209 route_change
= update_evpn_route_entry(bgp
, vpn
, afi
, safi
, rn
, &attr
,
1212 attr_new
= ri
->attr
;
1214 /* Perform route selection; this is just to set the flags correctly
1215 * as local route in the VNI always wins.
1217 evpn_route_select_install(bgp
, vpn
, rn
);
1218 bgp_unlock_node(rn
);
1220 /* If this is a new route or some attribute has changed, export the
1221 * route to the global table. The route will be advertised to peers
1222 * from there. Note that this table is a 2-level tree (RD-level +
1223 * Prefix-level) similar to L3VPN routes.
1226 struct bgp_info
*global_ri
;
1228 rn
= bgp_afi_node_get(bgp
->rib
[afi
][safi
], afi
, safi
,
1229 (struct prefix
*)p
, &vpn
->prd
);
1230 update_evpn_route_entry(bgp
, vpn
, afi
, safi
, rn
, attr_new
, 1, 0,
1233 /* Schedule for processing and unlock node. */
1234 bgp_process(bgp
, rn
, afi
, safi
);
1235 bgp_unlock_node(rn
);
1238 /* Unintern temporary. */
1239 aspath_unintern(&attr
.aspath
);
1244 /* Delete EVPN type5 route entry from global table */
1245 static void delete_evpn_type5_route_entry(struct bgp
*bgp_def
,
1246 struct bgp
*bgp_vrf
,
1247 afi_t afi
, safi_t safi
,
1248 struct bgp_node
*rn
,
1249 struct bgp_info
**ri
)
1251 struct bgp_info
*tmp_ri
= NULL
;
1255 /* find the matching route entry */
1256 for (tmp_ri
= rn
->info
; tmp_ri
; tmp_ri
= tmp_ri
->next
)
1257 if (tmp_ri
->peer
== bgp_def
->peer_self
1258 && tmp_ri
->type
== ZEBRA_ROUTE_BGP
1259 && tmp_ri
->sub_type
== BGP_ROUTE_STATIC
)
1264 /* Mark route for delete. */
1266 bgp_info_delete(rn
, tmp_ri
);
1269 /* Delete EVPN type5 route */
1270 static int delete_evpn_type5_route(struct bgp
*bgp_vrf
,
1271 struct prefix_evpn
*evp
)
1273 afi_t afi
= AFI_L2VPN
;
1274 safi_t safi
= SAFI_EVPN
;
1275 struct bgp_node
*rn
= NULL
;
1276 struct bgp_info
*ri
= NULL
;
1277 struct bgp
*bgp_def
= NULL
; /* default bgp instance */
1279 bgp_def
= bgp_get_default();
1283 /* locate the global route entry for this type-5 prefix */
1284 rn
= bgp_afi_node_lookup(bgp_def
->rib
[afi
][safi
], afi
, safi
,
1285 (struct prefix
*)evp
, &bgp_vrf
->vrf_prd
);
1289 delete_evpn_type5_route_entry(bgp_def
, bgp_vrf
, afi
, safi
, rn
, &ri
);
1291 bgp_process(bgp_def
, rn
, afi
, safi
);
1292 bgp_unlock_node(rn
);
1297 * Delete EVPN route entry. This could be in the VNI route table
1298 * or the global route table.
1300 static void delete_evpn_route_entry(struct bgp
*bgp
, struct bgpevpn
*vpn
,
1301 afi_t afi
, safi_t safi
, struct bgp_node
*rn
,
1302 struct bgp_info
**ri
)
1304 struct bgp_info
*tmp_ri
;
1308 /* Now, find matching route. */
1309 for (tmp_ri
= rn
->info
; tmp_ri
; tmp_ri
= tmp_ri
->next
)
1310 if (tmp_ri
->peer
== bgp
->peer_self
1311 && tmp_ri
->type
== ZEBRA_ROUTE_BGP
1312 && tmp_ri
->sub_type
== BGP_ROUTE_STATIC
)
1317 /* Mark route for delete. */
1319 bgp_info_delete(rn
, tmp_ri
);
1323 * Delete EVPN route (of type based on prefix) for specified VNI and
1324 * schedule for processing.
1326 static int delete_evpn_route(struct bgp
*bgp
, struct bgpevpn
*vpn
,
1327 struct prefix_evpn
*p
)
1329 struct bgp_node
*rn
, *global_rn
;
1330 struct bgp_info
*ri
;
1331 afi_t afi
= AFI_L2VPN
;
1332 safi_t safi
= SAFI_EVPN
;
1334 /* First, locate the route node within the VNI. If it doesn't exist,
1336 * is nothing further to do.
1338 /* NOTE: There is no RD here. */
1339 rn
= bgp_node_lookup(vpn
->route_table
, (struct prefix
*)p
);
1343 /* Next, locate route node in the global EVPN routing table. Note that
1344 * this table is a 2-level tree (RD-level + Prefix-level) similar to
1347 global_rn
= bgp_afi_node_lookup(bgp
->rib
[afi
][safi
], afi
, safi
,
1348 (struct prefix
*)p
, &vpn
->prd
);
1350 /* Delete route entry in the global EVPN table. */
1351 delete_evpn_route_entry(bgp
, vpn
, afi
, safi
, global_rn
, &ri
);
1353 /* Schedule for processing - withdraws to peers happen from
1357 bgp_process(bgp
, global_rn
, afi
, safi
);
1358 bgp_unlock_node(global_rn
);
1361 /* Delete route entry in the VNI route table. This can just be removed.
1363 delete_evpn_route_entry(bgp
, vpn
, afi
, safi
, rn
, &ri
);
1365 bgp_info_reap(rn
, ri
);
1366 bgp_unlock_node(rn
);
1372 * Update all type-2 (MACIP) local routes for this VNI - these should also
1373 * be scheduled for advertise to peers.
1375 static int update_all_type2_routes(struct bgp
*bgp
, struct bgpevpn
*vpn
)
1379 struct bgp_node
*rn
;
1380 struct bgp_info
*ri
;
1382 struct attr attr_sticky
;
1383 struct attr attr_ip6
;
1384 struct attr attr_sticky_ip6
;
1385 struct attr
*attr_new
;
1389 memset(&attr
, 0, sizeof(struct attr
));
1390 memset(&attr_sticky
, 0, sizeof(struct attr
));
1391 memset(&attr_ip6
, 0, sizeof(struct attr
));
1392 memset(&attr_sticky_ip6
, 0, sizeof(struct attr
));
1394 /* Build path-attribute - all type-2 routes for this VNI will share the
1395 * same path attribute.
1397 bgp_attr_default_set(&attr
, BGP_ORIGIN_IGP
);
1398 bgp_attr_default_set(&attr_sticky
, BGP_ORIGIN_IGP
);
1399 attr
.nexthop
= vpn
->originator_ip
;
1400 attr
.mp_nexthop_global_in
= vpn
->originator_ip
;
1401 attr
.mp_nexthop_len
= BGP_ATTR_NHLEN_IPV4
;
1402 bgpevpn_get_rmac(vpn
, &attr
.rmac
);
1403 attr_sticky
.nexthop
= vpn
->originator_ip
;
1404 attr_sticky
.mp_nexthop_global_in
= vpn
->originator_ip
;
1405 attr_sticky
.mp_nexthop_len
= BGP_ATTR_NHLEN_IPV4
;
1406 attr_sticky
.sticky
= 1;
1407 bgpevpn_get_rmac(vpn
, &attr_sticky
.rmac
);
1408 bgp_attr_default_set(&attr_ip6
, BGP_ORIGIN_IGP
);
1409 bgp_attr_default_set(&attr_sticky_ip6
, BGP_ORIGIN_IGP
);
1410 attr_ip6
.nexthop
= vpn
->originator_ip
;
1411 attr_ip6
.mp_nexthop_global_in
= vpn
->originator_ip
;
1412 attr_ip6
.mp_nexthop_len
= BGP_ATTR_NHLEN_IPV4
;
1413 bgpevpn_get_rmac(vpn
, &attr_ip6
.rmac
);
1414 attr_sticky_ip6
.nexthop
= vpn
->originator_ip
;
1415 attr_sticky_ip6
.mp_nexthop_global_in
= vpn
->originator_ip
;
1416 attr_sticky_ip6
.mp_nexthop_len
= BGP_ATTR_NHLEN_IPV4
;
1417 attr_sticky_ip6
.sticky
= 1;
1418 bgpevpn_get_rmac(vpn
, &attr_sticky_ip6
.rmac
);
1420 /* Set up RT, ENCAP and sticky MAC extended community. */
1421 build_evpn_route_extcomm(vpn
, &attr
, AFI_IP
);
1422 build_evpn_route_extcomm(vpn
, &attr_sticky
, AFI_IP
);
1423 build_evpn_route_extcomm(vpn
, &attr_ip6
, AFI_IP6
);
1424 build_evpn_route_extcomm(vpn
, &attr_sticky_ip6
, AFI_IP6
);
1426 /* Walk this VNI's route table and update local type-2 routes. For any
1427 * routes updated, update corresponding entry in the global table too.
1429 for (rn
= bgp_table_top(vpn
->route_table
); rn
;
1430 rn
= bgp_route_next(rn
)) {
1431 struct prefix_evpn
*evp
= (struct prefix_evpn
*)&rn
->p
;
1432 struct bgp_node
*rd_rn
;
1433 struct bgp_info
*global_ri
;
1435 if (evp
->prefix
.route_type
!= BGP_EVPN_MAC_IP_ROUTE
)
1438 if (IS_EVPN_PREFIX_IPADDR_V4(evp
)) {
1439 if (evpn_route_is_sticky(bgp
, rn
))
1440 update_evpn_route_entry(bgp
, vpn
, afi
, safi
, rn
,
1444 update_evpn_route_entry(bgp
, vpn
, afi
, safi
, rn
,
1445 &attr
, 0, 1, &ri
, 0);
1447 if (evpn_route_is_sticky(bgp
, rn
))
1448 update_evpn_route_entry(bgp
, vpn
, afi
, safi
, rn
,
1449 &attr_sticky_ip6
, 0, 1,
1452 update_evpn_route_entry(bgp
, vpn
, afi
, safi
, rn
,
1457 /* If a local route exists for this prefix, we need to update
1458 * the global routing table too.
1463 /* Perform route selection; this is just to set the flags
1465 * as local route in the VNI always wins.
1467 evpn_route_select_install(bgp
, vpn
, rn
);
1469 attr_new
= ri
->attr
;
1471 /* Update route in global routing table. */
1472 rd_rn
= bgp_afi_node_get(bgp
->rib
[afi
][safi
], afi
, safi
,
1473 (struct prefix
*)evp
, &vpn
->prd
);
1475 update_evpn_route_entry(bgp
, vpn
, afi
, safi
, rd_rn
, attr_new
, 0,
1478 /* Schedule for processing and unlock node. */
1479 bgp_process(bgp
, rd_rn
, afi
, safi
);
1480 bgp_unlock_node(rd_rn
);
1483 /* Unintern temporary. */
1484 aspath_unintern(&attr
.aspath
);
1485 aspath_unintern(&attr_sticky
.aspath
);
1491 * Delete all type-2 (MACIP) local routes for this VNI - only from the
1492 * global routing table. These are also scheduled for withdraw from peers.
1494 static int delete_global_type2_routes(struct bgp
*bgp
, struct bgpevpn
*vpn
)
1498 struct bgp_node
*rdrn
, *rn
;
1499 struct bgp_table
*table
;
1500 struct bgp_info
*ri
;
1505 rdrn
= bgp_node_lookup(bgp
->rib
[afi
][safi
], (struct prefix
*)&vpn
->prd
);
1506 if (rdrn
&& rdrn
->info
) {
1507 table
= (struct bgp_table
*)rdrn
->info
;
1508 for (rn
= bgp_table_top(table
); rn
; rn
= bgp_route_next(rn
)) {
1509 struct prefix_evpn
*evp
= (struct prefix_evpn
*)&rn
->p
;
1511 if (evp
->prefix
.route_type
!= BGP_EVPN_MAC_IP_ROUTE
)
1514 delete_evpn_route_entry(bgp
, vpn
, afi
, safi
, rn
, &ri
);
1516 bgp_process(bgp
, rn
, afi
, safi
);
1520 /* Unlock RD node. */
1522 bgp_unlock_node(rdrn
);
1528 * Delete all type-2 (MACIP) local routes for this VNI - from the global
1529 * table as well as the per-VNI route table.
1531 static int delete_all_type2_routes(struct bgp
*bgp
, struct bgpevpn
*vpn
)
1535 struct bgp_node
*rn
;
1536 struct bgp_info
*ri
;
1541 /* First, walk the global route table for this VNI's type-2 local
1543 * EVPN routes are a 2-level table, first get the RD table.
1545 delete_global_type2_routes(bgp
, vpn
);
1547 /* Next, walk this VNI's route table and delete local type-2 routes. */
1548 for (rn
= bgp_table_top(vpn
->route_table
); rn
;
1549 rn
= bgp_route_next(rn
)) {
1550 struct prefix_evpn
*evp
= (struct prefix_evpn
*)&rn
->p
;
1552 if (evp
->prefix
.route_type
!= BGP_EVPN_MAC_IP_ROUTE
)
1555 delete_evpn_route_entry(bgp
, vpn
, afi
, safi
, rn
, &ri
);
1557 /* Route entry in local table gets deleted immediately. */
1559 bgp_info_reap(rn
, ri
);
1566 * Delete all routes in the per-VNI route table.
1568 static int delete_all_vni_routes(struct bgp
*bgp
, struct bgpevpn
*vpn
)
1570 struct bgp_node
*rn
;
1571 struct bgp_info
*ri
, *nextri
;
1573 /* Walk this VNI's route table and delete all routes. */
1574 for (rn
= bgp_table_top(vpn
->route_table
); rn
;
1575 rn
= bgp_route_next(rn
)) {
1576 for (ri
= rn
->info
; (ri
!= NULL
) && (nextri
= ri
->next
, 1);
1578 bgp_info_delete(rn
, ri
);
1579 bgp_info_reap(rn
, ri
);
1587 * Update (and advertise) local routes for a VNI. Invoked upon the VNI
1588 * export RT getting modified or change to tunnel IP. Note that these
1589 * situations need the route in the per-VNI table as well as the global
1590 * table to be updated (as attributes change).
1592 static int update_routes_for_vni(struct bgp
*bgp
, struct bgpevpn
*vpn
)
1595 struct prefix_evpn p
;
1597 /* Update and advertise the type-3 route (only one) followed by the
1598 * locally learnt type-2 routes (MACIP) - for this VNI.
1600 build_evpn_type3_prefix(&p
, vpn
->originator_ip
);
1601 ret
= update_evpn_route(bgp
, vpn
, &p
, 0);
1605 return update_all_type2_routes(bgp
, vpn
);
1609 * Delete (and withdraw) local routes for specified VNI from the global
1610 * table and per-VNI table. After this, remove all other routes from
1611 * the per-VNI table. Invoked upon the VNI being deleted or EVPN
1612 * (advertise-all-vni) being disabled.
1614 static int delete_routes_for_vni(struct bgp
*bgp
, struct bgpevpn
*vpn
)
1617 struct prefix_evpn p
;
1619 /* Delete and withdraw locally learnt type-2 routes (MACIP)
1620 * followed by type-3 routes (only one) - for this VNI.
1622 ret
= delete_all_type2_routes(bgp
, vpn
);
1626 build_evpn_type3_prefix(&p
, vpn
->originator_ip
);
1627 ret
= delete_evpn_route(bgp
, vpn
, &p
);
1631 /* Delete all routes from the per-VNI table. */
1632 return delete_all_vni_routes(bgp
, vpn
);
1636 * There is a tunnel endpoint IP address change for this VNI,
1637 * need to re-advertise routes with the new nexthop.
1639 static int handle_tunnel_ip_change(struct bgp
*bgp
, struct bgpevpn
*vpn
,
1640 struct in_addr originator_ip
)
1642 struct prefix_evpn p
;
1644 /* If VNI is not live, we only need to update the originator ip */
1645 if (!is_vni_live(vpn
)) {
1646 vpn
->originator_ip
= originator_ip
;
1650 /* Update the tunnel-ip hash */
1651 bgp_tip_del(bgp
, &vpn
->originator_ip
);
1652 bgp_tip_add(bgp
, &originator_ip
);
1654 /* filter routes as martian nexthop db has changed */
1655 bgp_filter_evpn_routes_upon_martian_nh_change(bgp
);
1657 /* Need to withdraw type-3 route as the originator IP is part
1660 build_evpn_type3_prefix(&p
, vpn
->originator_ip
);
1661 delete_evpn_route(bgp
, vpn
, &p
);
1663 /* Update the tunnel IP and re-advertise all routes for this VNI. */
1664 vpn
->originator_ip
= originator_ip
;
1665 return update_routes_for_vni(bgp
, vpn
);
1669 * Install route entry into the VRF routing table and invoke route selection.
1671 static int install_evpn_route_entry_in_vrf(struct bgp
*bgp_vrf
,
1672 struct prefix_evpn
*evp
,
1673 struct bgp_info
*parent_ri
)
1675 struct bgp_node
*rn
;
1676 struct bgp_info
*ri
;
1677 struct attr
*attr_new
;
1680 struct prefix
*pp
= &p
;
1683 char buf
[PREFIX_STRLEN
];
1684 char buf1
[PREFIX_STRLEN
];
1686 memset(pp
, 0, sizeof(struct prefix
));
1687 ip_prefix_from_type2_prefix(evp
, pp
);
1689 if (bgp_debug_zebra(NULL
)) {
1690 zlog_debug("installing evpn prefix %s as ip prefix %s in vrf %s",
1691 prefix2str(evp
, buf
, sizeof(buf
)),
1692 prefix2str(pp
, buf1
, sizeof(buf
)),
1693 vrf_id_to_name(bgp_vrf
->vrf_id
));
1696 /* Create (or fetch) route within the VRF. */
1697 /* NOTE: There is no RD here. */
1698 if (IS_EVPN_PREFIX_IPADDR_V4(evp
)) {
1700 safi
= SAFI_UNICAST
;
1701 rn
= bgp_node_get(bgp_vrf
->rib
[afi
][safi
], pp
);
1702 } else if (IS_EVPN_PREFIX_IPADDR_V6(evp
)) {
1704 safi
= SAFI_UNICAST
;
1705 rn
= bgp_node_get(bgp_vrf
->rib
[afi
][safi
], pp
);
1709 /* Check if route entry is already present. */
1710 for (ri
= rn
->info
; ri
; ri
= ri
->next
)
1712 && (struct bgp_info
*)ri
->extra
->parent
== parent_ri
)
1716 /* Add (or update) attribute to hash. */
1717 attr_new
= bgp_attr_intern(parent_ri
->attr
);
1719 /* Create new route with its attribute. */
1720 ri
= info_make(parent_ri
->type
, parent_ri
->sub_type
, 0,
1721 parent_ri
->peer
, attr_new
, rn
);
1722 SET_FLAG(ri
->flags
, BGP_INFO_VALID
);
1723 bgp_info_extra_get(ri
);
1724 ri
->extra
->parent
= parent_ri
;
1725 if (parent_ri
->extra
)
1726 memcpy(&ri
->extra
->label
, &parent_ri
->extra
->label
,
1728 bgp_info_add(rn
, ri
);
1730 if (attrhash_cmp(ri
->attr
, parent_ri
->attr
)
1731 && !CHECK_FLAG(ri
->flags
, BGP_INFO_REMOVED
)) {
1732 bgp_unlock_node(rn
);
1735 /* The attribute has changed. */
1736 /* Add (or update) attribute to hash. */
1737 attr_new
= bgp_attr_intern(parent_ri
->attr
);
1739 /* Restore route, if needed. */
1740 if (CHECK_FLAG(ri
->flags
, BGP_INFO_REMOVED
))
1741 bgp_info_restore(rn
, ri
);
1743 /* Mark if nexthop has changed. */
1744 if (!IPV4_ADDR_SAME(&ri
->attr
->nexthop
, &attr_new
->nexthop
))
1745 SET_FLAG(ri
->flags
, BGP_INFO_IGP_CHANGED
);
1747 /* Unintern existing, set to new. */
1748 bgp_attr_unintern(&ri
->attr
);
1749 ri
->attr
= attr_new
;
1750 ri
->uptime
= bgp_clock();
1753 /* Perform route selection and update zebra, if required. */
1754 bgp_process(bgp_vrf
, rn
, afi
, safi
);
1760 * Install route entry into the VNI routing table and invoke route selection.
1762 static int install_evpn_route_entry(struct bgp
*bgp
, struct bgpevpn
*vpn
,
1763 struct prefix_evpn
*p
,
1764 struct bgp_info
*parent_ri
)
1766 struct bgp_node
*rn
;
1767 struct bgp_info
*ri
;
1768 struct attr
*attr_new
;
1771 /* Create (or fetch) route within the VNI. */
1772 /* NOTE: There is no RD here. */
1773 rn
= bgp_node_get(vpn
->route_table
, (struct prefix
*)p
);
1775 /* Check if route entry is already present. */
1776 for (ri
= rn
->info
; ri
; ri
= ri
->next
)
1778 && (struct bgp_info
*)ri
->extra
->parent
== parent_ri
)
1782 /* Add (or update) attribute to hash. */
1783 attr_new
= bgp_attr_intern(parent_ri
->attr
);
1785 /* Create new route with its attribute. */
1786 ri
= info_make(parent_ri
->type
, parent_ri
->sub_type
, 0,
1787 parent_ri
->peer
, attr_new
, rn
);
1788 SET_FLAG(ri
->flags
, BGP_INFO_VALID
);
1789 bgp_info_extra_get(ri
);
1790 ri
->extra
->parent
= parent_ri
;
1791 if (parent_ri
->extra
)
1792 memcpy(&ri
->extra
->label
, &parent_ri
->extra
->label
,
1794 bgp_info_add(rn
, ri
);
1796 if (attrhash_cmp(ri
->attr
, parent_ri
->attr
)
1797 && !CHECK_FLAG(ri
->flags
, BGP_INFO_REMOVED
)) {
1798 bgp_unlock_node(rn
);
1801 /* The attribute has changed. */
1802 /* Add (or update) attribute to hash. */
1803 attr_new
= bgp_attr_intern(parent_ri
->attr
);
1805 /* Restore route, if needed. */
1806 if (CHECK_FLAG(ri
->flags
, BGP_INFO_REMOVED
))
1807 bgp_info_restore(rn
, ri
);
1809 /* Mark if nexthop has changed. */
1810 if (!IPV4_ADDR_SAME(&ri
->attr
->nexthop
, &attr_new
->nexthop
))
1811 SET_FLAG(ri
->flags
, BGP_INFO_IGP_CHANGED
);
1813 /* Unintern existing, set to new. */
1814 bgp_attr_unintern(&ri
->attr
);
1815 ri
->attr
= attr_new
;
1816 ri
->uptime
= bgp_clock();
1819 /* Perform route selection and update zebra, if required. */
1820 ret
= evpn_route_select_install(bgp
, vpn
, rn
);
1826 * Uninstall route entry from the VRF routing table and send message
1827 * to zebra, if appropriate.
1829 static int uninstall_evpn_route_entry_in_vrf(struct bgp
*bgp_vrf
,
1830 struct prefix_evpn
*evp
,
1831 struct bgp_info
*parent_ri
)
1833 struct bgp_node
*rn
;
1834 struct bgp_info
*ri
;
1837 struct prefix
*pp
= &p
;
1840 char buf
[PREFIX_STRLEN
];
1841 char buf1
[PREFIX_STRLEN
];
1843 memset(pp
, 0, sizeof(struct prefix
));
1844 ip_prefix_from_type2_prefix(evp
, pp
);
1846 if (bgp_debug_zebra(NULL
)) {
1847 zlog_debug("uninstalling evpn prefix %s as ip prefix %s in vrf %s",
1848 prefix2str(evp
, buf
, sizeof(buf
)),
1849 prefix2str(pp
, buf1
, sizeof(buf
)),
1850 vrf_id_to_name(bgp_vrf
->vrf_id
));
1853 /* Locate route within the VRF. */
1854 /* NOTE: There is no RD here. */
1855 if (IS_EVPN_PREFIX_IPADDR_V4(evp
)) {
1857 safi
= SAFI_UNICAST
;
1858 rn
= bgp_node_lookup(bgp_vrf
->rib
[afi
][safi
], pp
);
1861 safi
= SAFI_UNICAST
;
1862 rn
= bgp_node_lookup(bgp_vrf
->rib
[afi
][safi
], pp
);
1868 /* Find matching route entry. */
1869 for (ri
= rn
->info
; ri
; ri
= ri
->next
)
1871 && (struct bgp_info
*)ri
->extra
->parent
== parent_ri
)
1877 /* Mark entry for deletion */
1878 bgp_info_delete(rn
, ri
);
1880 /* Perform route selection and update zebra, if required. */
1881 bgp_process(bgp_vrf
, rn
, afi
, safi
);
1883 /* Unlock route node. */
1884 bgp_unlock_node(rn
);
1890 * Uninstall route entry from the VNI routing table and send message
1891 * to zebra, if appropriate.
1893 static int uninstall_evpn_route_entry(struct bgp
*bgp
, struct bgpevpn
*vpn
,
1894 struct prefix_evpn
*p
,
1895 struct bgp_info
*parent_ri
)
1897 struct bgp_node
*rn
;
1898 struct bgp_info
*ri
;
1901 /* Locate route within the VNI. */
1902 /* NOTE: There is no RD here. */
1903 rn
= bgp_node_lookup(vpn
->route_table
, (struct prefix
*)p
);
1907 /* Find matching route entry. */
1908 for (ri
= rn
->info
; ri
; ri
= ri
->next
)
1910 && (struct bgp_info
*)ri
->extra
->parent
== parent_ri
)
1916 /* Mark entry for deletion */
1917 bgp_info_delete(rn
, ri
);
1919 /* Perform route selection and update zebra, if required. */
1920 ret
= evpn_route_select_install(bgp
, vpn
, rn
);
1922 /* Unlock route node. */
1923 bgp_unlock_node(rn
);
1929 * Given a route entry and a VRF, see if this route entry should be
1930 * imported into the VRF i.e., RTs match.
1932 static int is_route_matching_for_vrf(struct bgp
*bgp_vrf
,
1933 struct bgp_info
*ri
)
1935 struct attr
*attr
= ri
->attr
;
1936 struct ecommunity
*ecom
;
1940 /* Route should have valid RT to be even considered. */
1941 if (!(attr
->flag
& ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES
)))
1944 ecom
= attr
->ecommunity
;
1945 if (!ecom
|| !ecom
->size
)
1948 /* For each extended community RT, see if it matches this VNI. If any RT
1949 * matches, we're done.
1951 for (i
= 0; i
< ecom
->size
; i
++) {
1953 u_char type
, sub_type
;
1954 struct ecommunity_val
*eval
;
1955 struct ecommunity_val eval_tmp
;
1956 struct vrf_irt_node
*irt
;
1958 /* Only deal with RTs */
1959 pnt
= (ecom
->val
+ (i
* ECOMMUNITY_SIZE
));
1960 eval
= (struct ecommunity_val
*)(ecom
->val
1961 + (i
* ECOMMUNITY_SIZE
));
1964 if (sub_type
!= ECOMMUNITY_ROUTE_TARGET
)
1967 /* See if this RT matches specified VNIs import RTs */
1968 irt
= lookup_vrf_import_rt(eval
);
1969 if (irt
&& irt
->vrfs
)
1970 if (is_vrf_present_in_irt_vrfs(irt
->vrfs
, bgp_vrf
))
1973 /* Also check for non-exact match. In this, we mask out the AS
1975 * only check on the local-admin sub-field. This is to
1977 * VNI as the RT for EBGP peering too.
1980 if (type
== ECOMMUNITY_ENCODE_AS
1981 || type
== ECOMMUNITY_ENCODE_AS4
1982 || type
== ECOMMUNITY_ENCODE_IP
) {
1983 memcpy(&eval_tmp
, eval
, ECOMMUNITY_SIZE
);
1984 mask_ecom_global_admin(&eval_tmp
, eval
);
1985 irt
= lookup_vrf_import_rt(&eval_tmp
);
1987 if (irt
&& irt
->vrfs
)
1988 if (is_vrf_present_in_irt_vrfs(irt
->vrfs
, bgp_vrf
))
1996 * Given a route entry and a VNI, see if this route entry should be
1997 * imported into the VNI i.e., RTs match.
1999 static int is_route_matching_for_vni(struct bgp
*bgp
, struct bgpevpn
*vpn
,
2000 struct bgp_info
*ri
)
2002 struct attr
*attr
= ri
->attr
;
2003 struct ecommunity
*ecom
;
2007 /* Route should have valid RT to be even considered. */
2008 if (!(attr
->flag
& ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES
)))
2011 ecom
= attr
->ecommunity
;
2012 if (!ecom
|| !ecom
->size
)
2015 /* For each extended community RT, see if it matches this VNI. If any RT
2016 * matches, we're done.
2018 for (i
= 0; i
< ecom
->size
; i
++) {
2020 u_char type
, sub_type
;
2021 struct ecommunity_val
*eval
;
2022 struct ecommunity_val eval_tmp
;
2023 struct irt_node
*irt
;
2025 /* Only deal with RTs */
2026 pnt
= (ecom
->val
+ (i
* ECOMMUNITY_SIZE
));
2027 eval
= (struct ecommunity_val
*)(ecom
->val
2028 + (i
* ECOMMUNITY_SIZE
));
2031 if (sub_type
!= ECOMMUNITY_ROUTE_TARGET
)
2034 /* See if this RT matches specified VNIs import RTs */
2035 irt
= lookup_import_rt(bgp
, eval
);
2036 if (irt
&& irt
->vnis
)
2037 if (is_vni_present_in_irt_vnis(irt
->vnis
, vpn
))
2040 /* Also check for non-exact match. In this, we mask out the AS
2042 * only check on the local-admin sub-field. This is to
2044 * VNI as the RT for EBGP peering too.
2047 if (type
== ECOMMUNITY_ENCODE_AS
2048 || type
== ECOMMUNITY_ENCODE_AS4
2049 || type
== ECOMMUNITY_ENCODE_IP
) {
2050 memcpy(&eval_tmp
, eval
, ECOMMUNITY_SIZE
);
2051 mask_ecom_global_admin(&eval_tmp
, eval
);
2052 irt
= lookup_import_rt(bgp
, &eval_tmp
);
2054 if (irt
&& irt
->vnis
)
2055 if (is_vni_present_in_irt_vnis(irt
->vnis
, vpn
))
2063 * Install or uninstall mac-ip routes are appropriate for this
2066 static int install_uninstall_routes_for_vrf(struct bgp
*bgp_vrf
,
2071 struct bgp_node
*rd_rn
, *rn
;
2072 struct bgp_table
*table
;
2073 struct bgp_info
*ri
;
2075 char buf
[PREFIX_STRLEN
];
2076 struct bgp
*bgp_def
= NULL
;
2080 bgp_def
= bgp_get_default();
2084 /* Walk entire global routing table and evaluate routes which could be
2085 * imported into this VRF. Note that we need to loop through all global
2086 * routes to determine which route matches the import rt on vrf
2088 for (rd_rn
= bgp_table_top(bgp_def
->rib
[afi
][safi
]); rd_rn
;
2089 rd_rn
= bgp_route_next(rd_rn
)) {
2090 table
= (struct bgp_table
*)(rd_rn
->info
);
2094 for (rn
= bgp_table_top(table
); rn
; rn
= bgp_route_next(rn
)) {
2095 struct prefix_evpn
*evp
= (struct prefix_evpn
*)&rn
->p
;
2097 /* if not mac-ip route skip this route */
2098 if (evp
->prefix
.route_type
!= BGP_EVPN_MAC_IP_ROUTE
)
2101 /* if not a mac+ip route skip this route */
2102 if (!(IS_EVPN_PREFIX_IPADDR_V4(evp
) ||
2103 IS_EVPN_PREFIX_IPADDR_V6(evp
)))
2106 for (ri
= rn
->info
; ri
; ri
= ri
->next
) {
2107 /* Consider "valid" remote routes applicable for
2109 if (!(CHECK_FLAG(ri
->flags
, BGP_INFO_VALID
)
2110 && ri
->type
== ZEBRA_ROUTE_BGP
2111 && ri
->sub_type
== BGP_ROUTE_NORMAL
))
2114 if (is_route_matching_for_vrf(bgp_vrf
, ri
)) {
2117 install_evpn_route_entry_in_vrf(
2121 uninstall_evpn_route_entry_in_vrf(
2126 "Failed to %s EVPN %s route in VRF %s",
2129 prefix2str(evp
, buf
,
2131 vrf_id_to_name(bgp_vrf
->vrf_id
));
2143 * Install or uninstall routes of specified type that are appropriate for this
2146 static int install_uninstall_routes_for_vni(struct bgp
*bgp
,
2147 struct bgpevpn
*vpn
,
2148 bgp_evpn_route_type rtype
,
2153 struct bgp_node
*rd_rn
, *rn
;
2154 struct bgp_table
*table
;
2155 struct bgp_info
*ri
;
2161 /* Walk entire global routing table and evaluate routes which could be
2162 * imported into this VPN. Note that we cannot just look at the routes
2164 * the VNI's RD - remote routes applicable for this VNI could have any
2167 /* EVPN routes are a 2-level table. */
2168 for (rd_rn
= bgp_table_top(bgp
->rib
[afi
][safi
]); rd_rn
;
2169 rd_rn
= bgp_route_next(rd_rn
)) {
2170 table
= (struct bgp_table
*)(rd_rn
->info
);
2174 for (rn
= bgp_table_top(table
); rn
; rn
= bgp_route_next(rn
)) {
2175 struct prefix_evpn
*evp
= (struct prefix_evpn
*)&rn
->p
;
2177 if (evp
->prefix
.route_type
!= rtype
)
2180 for (ri
= rn
->info
; ri
; ri
= ri
->next
) {
2181 /* Consider "valid" remote routes applicable for
2183 if (!(CHECK_FLAG(ri
->flags
, BGP_INFO_VALID
)
2184 && ri
->type
== ZEBRA_ROUTE_BGP
2185 && ri
->sub_type
== BGP_ROUTE_NORMAL
))
2188 if (is_route_matching_for_vni(bgp
, vpn
, ri
)) {
2190 ret
= install_evpn_route_entry(
2193 ret
= uninstall_evpn_route_entry(
2198 "%u: Failed to %s EVPN %s route in VNI %u",
2202 rtype
== BGP_EVPN_MAC_IP_ROUTE
2216 /* Install any existing remote routes applicable for this VRF into VRF RIB. This
2217 * is invoked upon l3vni-add or l3vni import rt change */
2218 static int install_routes_for_vrf(struct bgp
*bgp_vrf
)
2220 install_uninstall_routes_for_vrf(bgp_vrf
, 1);
2225 * Install any existing remote routes applicable for this VNI into its
2226 * routing table. This is invoked when a VNI becomes "live" or its Import
2229 static int install_routes_for_vni(struct bgp
*bgp
, struct bgpevpn
*vpn
)
2233 /* Install type-3 routes followed by type-2 routes - the ones applicable
2236 ret
= install_uninstall_routes_for_vni(bgp
, vpn
, BGP_EVPN_IMET_ROUTE
,
2241 return install_uninstall_routes_for_vni(bgp
, vpn
, BGP_EVPN_MAC_IP_ROUTE
,
2245 /* uninstall routes from l3vni vrf. */
2246 static int uninstall_routes_for_vrf(struct bgp
*bgp_vrf
)
2248 install_uninstall_routes_for_vrf(bgp_vrf
, 0);
2253 * Uninstall any existing remote routes for this VNI. One scenario in which
2254 * this is invoked is upon an import RT change.
2256 static int uninstall_routes_for_vni(struct bgp
*bgp
, struct bgpevpn
*vpn
)
2260 /* Uninstall type-2 routes followed by type-3 routes - the ones
2264 ret
= install_uninstall_routes_for_vni(bgp
, vpn
, BGP_EVPN_MAC_IP_ROUTE
,
2269 return install_uninstall_routes_for_vni(bgp
, vpn
, BGP_EVPN_IMET_ROUTE
,
2274 * Install or uninstall route in matching VRFs (list).
2276 static int install_uninstall_route_in_vrfs(struct bgp
*bgp_def
, afi_t afi
,
2277 safi_t safi
, struct prefix_evpn
*evp
,
2278 struct bgp_info
*ri
,
2279 struct list
*vrfs
, int install
)
2281 char buf
[PREFIX2STR_BUFFER
];
2282 struct bgp
*bgp_vrf
;
2283 struct listnode
*node
, *nnode
;
2285 /* Only type-2 routes go into a VRF */
2286 if (!(evp
->prefix
.route_type
== BGP_EVPN_MAC_IP_ROUTE
))
2289 /* if not a mac+ip route skip this route */
2290 if (!(IS_EVPN_PREFIX_IPADDR_V4(evp
) ||
2291 IS_EVPN_PREFIX_IPADDR_V6(evp
)))
2294 for (ALL_LIST_ELEMENTS(vrfs
, node
, nnode
, bgp_vrf
)) {
2298 ret
= install_evpn_route_entry_in_vrf(bgp_vrf
,
2301 ret
= uninstall_evpn_route_entry_in_vrf(bgp_vrf
,
2305 zlog_err("%u: Failed to %s prefix %s in VRF %s",
2307 install
? "install" : "uninstall",
2308 prefix2str(evp
, buf
, sizeof(buf
)),
2309 vrf_id_to_name(bgp_vrf
->vrf_id
));
2318 * Install or uninstall route in matching VNIs (list).
2320 static int install_uninstall_route_in_vnis(struct bgp
*bgp
, afi_t afi
,
2321 safi_t safi
, struct prefix_evpn
*evp
,
2322 struct bgp_info
*ri
,
2323 struct list
*vnis
, int install
)
2325 struct bgpevpn
*vpn
;
2326 struct listnode
*node
, *nnode
;
2328 for (ALL_LIST_ELEMENTS(vnis
, node
, nnode
, vpn
)) {
2331 if (!is_vni_live(vpn
))
2335 ret
= install_evpn_route_entry(bgp
, vpn
, evp
, ri
);
2337 ret
= uninstall_evpn_route_entry(bgp
, vpn
, evp
, ri
);
2340 zlog_err("%u: Failed to %s EVPN %s route in VNI %u",
2341 bgp
->vrf_id
, install
? "install" : "uninstall",
2342 evp
->prefix
.route_type
== BGP_EVPN_MAC_IP_ROUTE
2354 * Install or uninstall route for appropriate VNIs.
2356 static int install_uninstall_evpn_route(struct bgp
*bgp
, afi_t afi
, safi_t safi
,
2357 struct prefix
*p
, struct bgp_info
*ri
,
2360 struct prefix_evpn
*evp
= (struct prefix_evpn
*)p
;
2361 struct attr
*attr
= ri
->attr
;
2362 struct ecommunity
*ecom
;
2367 /* Only type-2 and type-3 routes go into a L2 VNI. */
2368 if (!(evp
->prefix
.route_type
== BGP_EVPN_MAC_IP_ROUTE
2369 || evp
->prefix
.route_type
== BGP_EVPN_IMET_ROUTE
))
2372 /* If we don't have Route Target, nothing much to do. */
2373 if (!(attr
->flag
& ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES
)))
2376 ecom
= attr
->ecommunity
;
2377 if (!ecom
|| !ecom
->size
)
2380 /* For each extended community RT, see which VNIs match and import
2381 * the route into matching VNIs.
2383 for (i
= 0; i
< ecom
->size
; i
++) {
2385 u_char type
, sub_type
;
2386 struct ecommunity_val
*eval
;
2387 struct ecommunity_val eval_tmp
;
2388 struct irt_node
*irt
; /* import rt for l2vni */
2389 struct vrf_irt_node
*vrf_irt
; /* import rt for l3vni */
2391 /* Only deal with RTs */
2392 pnt
= (ecom
->val
+ (i
* ECOMMUNITY_SIZE
));
2393 eval
= (struct ecommunity_val
*)(ecom
->val
2394 + (i
* ECOMMUNITY_SIZE
));
2397 if (sub_type
!= ECOMMUNITY_ROUTE_TARGET
)
2400 /* Import route into matching l2-vnis */
2401 irt
= lookup_import_rt(bgp
, eval
);
2402 if (irt
&& irt
->vnis
)
2403 install_uninstall_route_in_vnis(bgp
, afi
, safi
, evp
, ri
,
2406 /* Import route into matching l3-vnis (vrfs) */
2407 vrf_irt
= lookup_vrf_import_rt(eval
);
2408 if (vrf_irt
&& vrf_irt
->vrfs
)
2409 install_uninstall_route_in_vrfs(bgp
, afi
, safi
, evp
, ri
,
2410 vrf_irt
->vrfs
, import
);
2412 /* Also check for non-exact match. In this, we mask out the AS
2414 * only check on the local-admin sub-field. This is to
2416 * VNI as the RT for EBGP peering too.
2420 if (type
== ECOMMUNITY_ENCODE_AS
2421 || type
== ECOMMUNITY_ENCODE_AS4
2422 || type
== ECOMMUNITY_ENCODE_IP
) {
2423 memcpy(&eval_tmp
, eval
, ECOMMUNITY_SIZE
);
2424 mask_ecom_global_admin(&eval_tmp
, eval
);
2425 irt
= lookup_import_rt(bgp
, &eval_tmp
);
2426 vrf_irt
= lookup_vrf_import_rt(&eval_tmp
);
2428 if (irt
&& irt
->vnis
)
2429 install_uninstall_route_in_vnis(bgp
, afi
, safi
, evp
, ri
,
2431 if (vrf_irt
&& vrf_irt
->vrfs
)
2432 install_uninstall_route_in_vrfs(bgp
, afi
, safi
, evp
,
2440 /* delete and withdraw all ipv4 and ipv6 routes in the vrf table as type-5
2442 static void delete_withdraw_vrf_routes(struct bgp
*bgp_vrf
)
2444 /* delete all ipv4 routes and withdraw from peers */
2445 bgp_evpn_withdraw_type5_routes(bgp_vrf
, AFI_IP
, SAFI_UNICAST
);
2447 /* delete all ipv6 routes and withdraw from peers */
2448 bgp_evpn_withdraw_type5_routes(bgp_vrf
, AFI_IP6
, SAFI_UNICAST
);
2451 /* update and advertise all ipv4 and ipv6 routes in thr vrf table as type-5
2453 static void update_advertise_vrf_routes(struct bgp
*bgp_vrf
)
2455 /* update all ipv4 routes */
2456 bgp_evpn_advertise_type5_routes(bgp_vrf
, AFI_IP
, SAFI_UNICAST
);
2458 /* update all ipv6 routes */
2459 bgp_evpn_advertise_type5_routes(bgp_vrf
, AFI_IP6
, SAFI_UNICAST
);
2463 * update and advertise local routes for a VRF as type-5 routes.
2464 * This is invoked upon RD change for a VRF. Note taht the processing is only
2465 * done in the global route table using the routes which already exist in the
2468 static void update_router_id_vrf(struct bgp
*bgp_vrf
)
2470 /* skip if the RD is configured */
2471 if (is_vrf_rd_configured(bgp_vrf
))
2474 /* derive the RD for the VRF based on new router-id */
2475 bgp_evpn_derive_auto_rd_for_vrf(bgp_vrf
);
2477 /* update advertise ipv4|ipv6 routes as type-5 routes */
2478 update_advertise_vrf_routes(bgp_vrf
);
2482 * Delete and withdraw all type-5 routes for the RD corresponding to VRF.
2483 * This is invoked upon VRF RD change. The processing is done only from global
2486 static void withdraw_router_id_vrf(struct bgp
*bgp_vrf
)
2488 /* skip if the RD is configured */
2489 if (is_vrf_rd_configured(bgp_vrf
))
2492 /* delete/withdraw ipv4|ipv6 routes as type-5 routes */
2493 delete_withdraw_vrf_routes(bgp_vrf
);
2497 * Update and advertise local routes for a VNI. Invoked upon router-id
2498 * change. Note that the processing is done only on the global route table
2499 * using routes that already exist in the per-VNI table.
2501 static int update_advertise_vni_routes(struct bgp
*bgp
, struct bgpevpn
*vpn
)
2503 struct prefix_evpn p
;
2504 struct bgp_node
*rn
, *global_rn
;
2505 struct bgp_info
*ri
, *global_ri
;
2507 afi_t afi
= AFI_L2VPN
;
2508 safi_t safi
= SAFI_EVPN
;
2510 /* Locate type-3 route for VNI in the per-VNI table and use its
2511 * attributes to create and advertise the type-3 route for this VNI
2512 * in the global table.
2514 build_evpn_type3_prefix(&p
, vpn
->originator_ip
);
2515 rn
= bgp_node_lookup(vpn
->route_table
, (struct prefix
*)&p
);
2516 if (!rn
) /* unexpected */
2518 for (ri
= rn
->info
; ri
; ri
= ri
->next
)
2519 if (ri
->peer
== bgp
->peer_self
&& ri
->type
== ZEBRA_ROUTE_BGP
2520 && ri
->sub_type
== BGP_ROUTE_STATIC
)
2522 if (!ri
) /* unexpected */
2526 global_rn
= bgp_afi_node_get(bgp
->rib
[afi
][safi
], afi
, safi
,
2527 (struct prefix
*)&p
, &vpn
->prd
);
2528 update_evpn_route_entry(bgp
, vpn
, afi
, safi
, global_rn
, attr
, 1, 0, &ri
,
2531 /* Schedule for processing and unlock node. */
2532 bgp_process(bgp
, global_rn
, afi
, safi
);
2533 bgp_unlock_node(global_rn
);
2535 /* Now, walk this VNI's route table and use the route and its attribute
2536 * to create and schedule route in global table.
2538 for (rn
= bgp_table_top(vpn
->route_table
); rn
;
2539 rn
= bgp_route_next(rn
)) {
2540 struct prefix_evpn
*evp
= (struct prefix_evpn
*)&rn
->p
;
2542 /* Identify MAC-IP local routes. */
2543 if (evp
->prefix
.route_type
!= BGP_EVPN_MAC_IP_ROUTE
)
2546 for (ri
= rn
->info
; ri
; ri
= ri
->next
)
2547 if (ri
->peer
== bgp
->peer_self
2548 && ri
->type
== ZEBRA_ROUTE_BGP
2549 && ri
->sub_type
== BGP_ROUTE_STATIC
)
2554 /* Create route in global routing table using this route entry's
2558 global_rn
= bgp_afi_node_get(bgp
->rib
[afi
][safi
], afi
, safi
,
2559 (struct prefix
*)evp
, &vpn
->prd
);
2561 update_evpn_route_entry(bgp
, vpn
, afi
, safi
, global_rn
, attr
, 1,
2564 /* Schedule for processing and unlock node. */
2565 bgp_process(bgp
, global_rn
, afi
, safi
);
2566 bgp_unlock_node(global_rn
);
2573 * Delete (and withdraw) local routes for a VNI - only from the global
2574 * table. Invoked upon router-id change.
2576 static int delete_withdraw_vni_routes(struct bgp
*bgp
, struct bgpevpn
*vpn
)
2579 struct prefix_evpn p
;
2580 struct bgp_node
*global_rn
;
2581 struct bgp_info
*ri
;
2582 afi_t afi
= AFI_L2VPN
;
2583 safi_t safi
= SAFI_EVPN
;
2585 /* Delete and withdraw locally learnt type-2 routes (MACIP)
2586 * for this VNI - from the global table.
2588 ret
= delete_global_type2_routes(bgp
, vpn
);
2592 /* Remove type-3 route for this VNI from global table. */
2593 build_evpn_type3_prefix(&p
, vpn
->originator_ip
);
2594 global_rn
= bgp_afi_node_lookup(bgp
->rib
[afi
][safi
], afi
, safi
,
2595 (struct prefix
*)&p
, &vpn
->prd
);
2597 /* Delete route entry in the global EVPN table. */
2598 delete_evpn_route_entry(bgp
, vpn
, afi
, safi
, global_rn
, &ri
);
2600 /* Schedule for processing - withdraws to peers happen from
2604 bgp_process(bgp
, global_rn
, afi
, safi
);
2605 bgp_unlock_node(global_rn
);
2612 * Handle router-id change. Update and advertise local routes corresponding
2613 * to this VNI from peers. Note that this is invoked after updating the
2614 * router-id. The routes in the per-VNI table are used to create routes in
2615 * the global table and schedule them.
2617 static void update_router_id_vni(struct hash_backet
*backet
, struct bgp
*bgp
)
2619 struct bgpevpn
*vpn
;
2621 vpn
= (struct bgpevpn
*)backet
->data
;
2624 zlog_warn("%s: VNI hash entry for VNI not found", __FUNCTION__
);
2628 /* Skip VNIs with configured RD. */
2629 if (is_rd_configured(vpn
))
2632 bgp_evpn_derive_auto_rd(bgp
, vpn
);
2633 update_advertise_vni_routes(bgp
, vpn
);
2637 * Handle router-id change. Delete and withdraw local routes corresponding
2638 * to this VNI from peers. Note that this is invoked prior to updating
2639 * the router-id and is done only on the global route table, the routes
2640 * are needed in the per-VNI table to re-advertise with new router id.
2642 static void withdraw_router_id_vni(struct hash_backet
*backet
, struct bgp
*bgp
)
2644 struct bgpevpn
*vpn
;
2646 vpn
= (struct bgpevpn
*)backet
->data
;
2649 zlog_warn("%s: VNI hash entry for VNI not found", __FUNCTION__
);
2653 /* Skip VNIs with configured RD. */
2654 if (is_rd_configured(vpn
))
2657 delete_withdraw_vni_routes(bgp
, vpn
);
2661 * Process received EVPN type-2 route (advertise or withdraw).
2663 static int process_type2_route(struct peer
*peer
, afi_t afi
, safi_t safi
,
2664 struct attr
*attr
, u_char
*pfx
, int psize
,
2665 u_int32_t addpath_id
)
2667 struct prefix_rd prd
;
2668 struct prefix_evpn p
;
2671 mpls_label_t
*label_pnt
;
2674 /* Type-2 route should be either 33, 37 or 49 bytes or an
2675 * additional 3 bytes if there is a second label (VNI):
2676 * RD (8), ESI (10), Eth Tag (4), MAC Addr Len (1),
2677 * MAC Addr (6), IP len (1), IP (0, 4 or 16),
2678 * MPLS Lbl1 (3), MPLS Lbl2 (0 or 3)
2680 if (psize
!= 33 && psize
!= 37 && psize
!= 49 && psize
!= 36
2681 && psize
!= 40 && psize
!= 52) {
2682 zlog_err("%u:%s - Rx EVPN Type-2 NLRI with invalid length %d",
2683 peer
->bgp
->vrf_id
, peer
->host
, psize
);
2687 /* Make prefix_rd */
2688 prd
.family
= AF_UNSPEC
;
2690 memcpy(&prd
.val
, pfx
, 8);
2693 /* Make EVPN prefix. */
2694 memset(&p
, 0, sizeof(struct prefix_evpn
));
2696 p
.prefixlen
= EVPN_TYPE_2_ROUTE_PREFIXLEN
;
2697 p
.prefix
.route_type
= BGP_EVPN_MAC_IP_ROUTE
;
2699 /* Skip over Ethernet Seg Identifier for now. */
2702 /* Skip over Ethernet Tag for now. */
2705 /* Get the MAC Addr len */
2706 macaddr_len
= *pfx
++;
2708 /* Get the MAC Addr */
2709 if (macaddr_len
== (ETH_ALEN
* 8)) {
2710 memcpy(&p
.prefix
.mac
.octet
, pfx
, ETH_ALEN
);
2714 "%u:%s - Rx EVPN Type-2 NLRI with unsupported MAC address length %d",
2715 peer
->bgp
->vrf_id
, peer
->host
, macaddr_len
);
2721 ipaddr_len
= *pfx
++;
2722 if (ipaddr_len
!= 0 && ipaddr_len
!= IPV4_MAX_BITLEN
2723 && ipaddr_len
!= IPV6_MAX_BITLEN
) {
2725 "%u:%s - Rx EVPN Type-2 NLRI with unsupported IP address length %d",
2726 peer
->bgp
->vrf_id
, peer
->host
, ipaddr_len
);
2731 ipaddr_len
/= 8; /* Convert to bytes. */
2732 p
.prefix
.ip
.ipa_type
= (ipaddr_len
== IPV4_MAX_BYTELEN
)
2735 memcpy(&p
.prefix
.ip
.ip
.addr
, pfx
, ipaddr_len
);
2739 /* Get the VNI (in MPLS label field). */
2740 /* Note: We ignore the second VNI, if any. */
2741 label_pnt
= (mpls_label_t
*)pfx
;
2743 /* Process the route. */
2745 ret
= bgp_update(peer
, (struct prefix
*)&p
, addpath_id
, attr
,
2746 afi
, safi
, ZEBRA_ROUTE_BGP
, BGP_ROUTE_NORMAL
,
2747 &prd
, label_pnt
, 0, NULL
);
2749 ret
= bgp_withdraw(peer
, (struct prefix
*)&p
, addpath_id
, attr
,
2750 afi
, safi
, ZEBRA_ROUTE_BGP
, BGP_ROUTE_NORMAL
,
2751 &prd
, label_pnt
, NULL
);
2756 * Process received EVPN type-3 route (advertise or withdraw).
2758 static int process_type3_route(struct peer
*peer
, afi_t afi
, safi_t safi
,
2759 struct attr
*attr
, u_char
*pfx
, int psize
,
2760 u_int32_t addpath_id
)
2762 struct prefix_rd prd
;
2763 struct prefix_evpn p
;
2767 /* Type-3 route should be either 17 or 29 bytes: RD (8), Eth Tag (4),
2768 * IP len (1) and IP (4 or 16).
2770 if (psize
!= 17 && psize
!= 29) {
2771 zlog_err("%u:%s - Rx EVPN Type-3 NLRI with invalid length %d",
2772 peer
->bgp
->vrf_id
, peer
->host
, psize
);
2776 /* Make prefix_rd */
2777 prd
.family
= AF_UNSPEC
;
2779 memcpy(&prd
.val
, pfx
, 8);
2782 /* Make EVPN prefix. */
2783 memset(&p
, 0, sizeof(struct prefix_evpn
));
2785 p
.prefixlen
= EVPN_TYPE_3_ROUTE_PREFIXLEN
;
2786 p
.prefix
.route_type
= BGP_EVPN_IMET_ROUTE
;
2788 /* Skip over Ethernet Tag for now. */
2792 ipaddr_len
= *pfx
++;
2793 if (ipaddr_len
== IPV4_MAX_BITLEN
) {
2794 p
.prefix
.ip
.ipa_type
= IPADDR_V4
;
2795 memcpy(&p
.prefix
.ip
.ip
.addr
, pfx
, IPV4_MAX_BYTELEN
);
2798 "%u:%s - Rx EVPN Type-3 NLRI with unsupported IP address length %d",
2799 peer
->bgp
->vrf_id
, peer
->host
, ipaddr_len
);
2803 /* Process the route. */
2805 ret
= bgp_update(peer
, (struct prefix
*)&p
, addpath_id
, attr
,
2806 afi
, safi
, ZEBRA_ROUTE_BGP
, BGP_ROUTE_NORMAL
,
2807 &prd
, NULL
, 0, NULL
);
2809 ret
= bgp_withdraw(peer
, (struct prefix
*)&p
, addpath_id
, attr
,
2810 afi
, safi
, ZEBRA_ROUTE_BGP
, BGP_ROUTE_NORMAL
,
2816 * Process received EVPN type-5 route (advertise or withdraw).
2818 static int process_type5_route(struct peer
*peer
, afi_t afi
, safi_t safi
,
2819 struct attr
*attr
, u_char
*pfx
, int psize
,
2820 u_int32_t addpath_id
, int withdraw
)
2822 struct prefix_rd prd
;
2823 struct prefix_evpn p
;
2824 struct bgp_route_evpn evpn
;
2827 mpls_label_t
*label_pnt
;
2830 /* Type-5 route should be 34 or 58 bytes:
2831 * RD (8), ESI (10), Eth Tag (4), IP len (1), IP (4 or 16),
2832 * GW (4 or 16) and VNI (3).
2833 * Note that the IP and GW should both be IPv4 or both IPv6.
2835 if (psize
!= 34 && psize
!= 58) {
2836 zlog_err("%u:%s - Rx EVPN Type-5 NLRI with invalid length %d",
2837 peer
->bgp
->vrf_id
, peer
->host
, psize
);
2841 /* Make prefix_rd */
2842 prd
.family
= AF_UNSPEC
;
2844 memcpy(&prd
.val
, pfx
, 8);
2847 /* Make EVPN prefix. */
2848 memset(&p
, 0, sizeof(struct prefix_evpn
));
2850 p
.prefix
.route_type
= BGP_EVPN_IP_PREFIX_ROUTE
;
2852 /* Additional information outside of prefix - ESI and GW IP */
2853 memset(&evpn
, 0, sizeof(evpn
));
2856 memcpy(&evpn
.eth_s_id
.val
, pfx
, 10);
2859 /* Fetch Ethernet Tag. */
2860 memcpy(ð_tag
, pfx
, 4);
2861 p
.prefix
.eth_tag
= ntohl(eth_tag
);
2864 /* Fetch IP prefix length. */
2866 if (ippfx_len
> IPV6_MAX_BITLEN
) {
2868 "%u:%s - Rx EVPN Type-5 NLRI with invalid IP Prefix length %d",
2869 peer
->bgp
->vrf_id
, peer
->host
, ippfx_len
);
2872 p
.prefix
.ip_prefix_length
= ippfx_len
;
2874 /* Determine IPv4 or IPv6 prefix */
2875 /* Since the address and GW are from the same family, this just becomes
2876 * a simple check on the total size.
2879 SET_IPADDR_V4(&p
.prefix
.ip
);
2880 memcpy(&p
.prefix
.ip
.ipaddr_v4
, pfx
, 4);
2882 memcpy(&evpn
.gw_ip
.ipv4
, pfx
, 4);
2884 p
.prefixlen
= PREFIX_LEN_ROUTE_TYPE_5_IPV4
;
2886 SET_IPADDR_V6(&p
.prefix
.ip
);
2887 memcpy(&p
.prefix
.ip
.ipaddr_v6
, pfx
, 16);
2889 memcpy(&evpn
.gw_ip
.ipv6
, pfx
, 16);
2891 p
.prefixlen
= PREFIX_LEN_ROUTE_TYPE_5_IPV6
;
2894 label_pnt
= (mpls_label_t
*)pfx
;
2896 /* Process the route. */
2898 ret
= bgp_update(peer
, (struct prefix
*)&p
, addpath_id
, attr
,
2899 afi
, safi
, ZEBRA_ROUTE_BGP
, BGP_ROUTE_NORMAL
,
2900 &prd
, label_pnt
, 0, &evpn
);
2902 ret
= bgp_withdraw(peer
, (struct prefix
*)&p
, addpath_id
, attr
,
2903 afi
, safi
, ZEBRA_ROUTE_BGP
, BGP_ROUTE_NORMAL
,
2904 &prd
, label_pnt
, &evpn
);
2909 static void evpn_mpattr_encode_type5(struct stream
*s
, struct prefix
*p
,
2910 struct prefix_rd
*prd
, mpls_label_t
*label
,
2915 struct evpn_addr
*p_evpn_p
;
2917 memset(&temp
, 0, 16);
2918 if (p
->family
!= AF_EVPN
)
2920 p_evpn_p
= &(p
->u
.prefix_evpn
);
2922 if (IS_IPADDR_V4(&p_evpn_p
->ip
))
2925 len
= 32; /* ipv6 */
2926 /* Prefix contains RD, ESI, EthTag, IP length, IP, GWIP and VNI */
2927 stream_putc(s
, 8 + 10 + 4 + 1 + len
+ 3);
2928 stream_put(s
, prd
->val
, 8);
2930 stream_put(s
, &(attr
->evpn_overlay
.eth_s_id
), 10);
2932 stream_put(s
, &temp
, 10);
2933 stream_putl(s
, p_evpn_p
->eth_tag
);
2934 stream_putc(s
, p_evpn_p
->ip_prefix_length
);
2935 if (IS_IPADDR_V4(&p_evpn_p
->ip
))
2936 stream_put_ipv4(s
, p_evpn_p
->ip
.ipaddr_v4
.s_addr
);
2938 stream_put(s
, &p_evpn_p
->ip
.ipaddr_v6
, 16);
2940 if (IS_IPADDR_V4(&p_evpn_p
->ip
))
2942 attr
->evpn_overlay
.gw_ip
.ipv4
.s_addr
);
2944 stream_put(s
, &(attr
->evpn_overlay
.gw_ip
.ipv6
), 16);
2946 if (IS_IPADDR_V4(&p_evpn_p
->ip
))
2947 stream_put_ipv4(s
, 0);
2949 stream_put(s
, &temp
, 16);
2953 stream_put(s
, label
, 3);
2959 * Cleanup specific VNI upon EVPN (advertise-all-vni) being disabled.
2961 static void cleanup_vni_on_disable(struct hash_backet
*backet
, struct bgp
*bgp
)
2963 struct bgpevpn
*vpn
= (struct bgpevpn
*)backet
->data
;
2965 /* Remove EVPN routes and schedule for processing. */
2966 delete_routes_for_vni(bgp
, vpn
);
2968 /* Clear "live" flag and see if hash needs to be freed. */
2969 UNSET_FLAG(vpn
->flags
, VNI_FLAG_LIVE
);
2970 if (!is_vni_configured(vpn
))
2971 bgp_evpn_free(bgp
, vpn
);
2975 * Free a VNI entry; iterator function called during cleanup.
2977 static void free_vni_entry(struct hash_backet
*backet
, struct bgp
*bgp
)
2979 struct bgpevpn
*vpn
;
2981 vpn
= (struct bgpevpn
*)backet
->data
;
2982 delete_all_vni_routes(bgp
, vpn
);
2983 bgp_evpn_free(bgp
, vpn
);
2987 * Derive AUTO import RT for BGP VRF - L3VNI
2989 static void evpn_auto_rt_import_add_for_vrf(struct bgp
*bgp_vrf
)
2991 struct bgp
*bgp_def
= NULL
;
2993 form_auto_rt(bgp_vrf
, bgp_vrf
->l3vni
, bgp_vrf
->vrf_import_rtl
);
2994 UNSET_FLAG(bgp_vrf
->vrf_flags
, BGP_VRF_IMPORT_RT_CFGD
);
2997 bgp_def
= bgp_get_default();
3000 bgp_evpn_map_vrf_to_its_rts(bgp_vrf
);
3004 * Delete AUTO import RT from BGP VRF - L3VNI
3006 static void evpn_auto_rt_import_delete_for_vrf(struct bgp
*bgp_vrf
)
3008 evpn_rt_delete_auto(bgp_vrf
, bgp_vrf
->l3vni
, bgp_vrf
->vrf_import_rtl
);
3012 * Derive AUTO export RT for BGP VRF - L3VNI
3014 static void evpn_auto_rt_export_add_for_vrf(struct bgp
*bgp_vrf
)
3016 UNSET_FLAG(bgp_vrf
->vrf_flags
, BGP_VRF_EXPORT_RT_CFGD
);
3017 form_auto_rt(bgp_vrf
, bgp_vrf
->l3vni
, bgp_vrf
->vrf_export_rtl
);
3021 * Delete AUTO export RT from BGP VRF - L3VNI
3023 static void evpn_auto_rt_export_delete_for_vrf(struct bgp
*bgp_vrf
)
3025 evpn_rt_delete_auto(bgp_vrf
, bgp_vrf
->l3vni
, bgp_vrf
->vrf_export_rtl
);
3028 static void bgp_evpn_handle_export_rt_change_for_vrf(struct bgp
*bgp_vrf
)
3030 struct bgp
*bgp_def
= NULL
;
3031 struct listnode
*node
= NULL
;
3032 struct bgpevpn
*vpn
= NULL
;
3034 bgp_def
= bgp_get_default();
3038 /* update all type-5 routes */
3039 update_advertise_vrf_routes(bgp_vrf
);
3041 /* update all type-2 routes */
3042 for (ALL_LIST_ELEMENTS_RO(bgp_vrf
->l2vnis
, node
, vpn
))
3043 update_routes_for_vni(bgp_def
, vpn
);
3050 /* withdraw all type-5 routes for an address family */
3051 void bgp_evpn_withdraw_type5_routes(struct bgp
*bgp_vrf
,
3052 afi_t afi
, safi_t safi
)
3054 struct bgp_table
*table
= NULL
;
3055 struct bgp_node
*rn
= NULL
;
3057 if (!advertise_type5_routes(bgp_vrf
, afi
))
3060 table
= bgp_vrf
->rib
[afi
][safi
];
3061 for (rn
= bgp_table_top(table
); rn
; rn
= bgp_route_next(rn
)) {
3064 struct prefix_evpn evp
;
3065 char buf
[PREFIX_STRLEN
];
3067 build_type5_prefix_from_ip_prefix(&evp
, &rn
->p
);
3068 ret
= delete_evpn_type5_route(bgp_vrf
, &evp
);
3071 "%u failed to delete type-5 route for prefix %s in vrf %s",
3073 prefix2str(&rn
->p
, buf
, sizeof(buf
)),
3074 vrf_id_to_name(bgp_vrf
->vrf_id
));
3079 /* advertise all type-5 routes for an address family */
3080 void bgp_evpn_advertise_type5_routes(struct bgp
*bgp_vrf
,
3081 afi_t afi
, safi_t safi
)
3083 struct bgp_table
*table
= NULL
;
3084 struct bgp_node
*rn
= NULL
;
3086 if (!advertise_type5_routes(bgp_vrf
, afi
))
3089 table
= bgp_vrf
->rib
[afi
][safi
];
3090 for (rn
= bgp_table_top(table
); rn
; rn
= bgp_route_next(rn
)) {
3093 struct prefix_evpn evp
;
3094 char buf
[PREFIX_STRLEN
];
3096 build_type5_prefix_from_ip_prefix(&evp
, &rn
->p
);
3097 ret
= update_evpn_type5_route(bgp_vrf
, &evp
);
3100 "%u failed to create type-5 route for prefix %s in vrf %s",
3102 prefix2str(&rn
->p
, buf
, sizeof(buf
)),
3103 vrf_id_to_name(bgp_vrf
->vrf_id
));
3108 void evpn_rt_delete_auto(struct bgp
*bgp
, vni_t vni
,
3111 struct listnode
*node
, *nnode
, *node_to_del
;
3112 struct ecommunity
*ecom
, *ecom_auto
;
3113 struct ecommunity_val eval
;
3115 encode_route_target_as((bgp
->as
& 0xFFFF), vni
, &eval
);
3117 ecom_auto
= ecommunity_new();
3118 ecommunity_add_val(ecom_auto
, &eval
);
3121 for (ALL_LIST_ELEMENTS(rtl
, node
, nnode
, ecom
)) {
3122 if (ecommunity_match(ecom
, ecom_auto
)) {
3123 ecommunity_free(&ecom
);
3129 list_delete_node(rtl
, node_to_del
);
3131 ecommunity_free(&ecom_auto
);
3134 void bgp_evpn_configure_import_rt_for_vrf(struct bgp
*bgp_vrf
,
3135 struct ecommunity
*ecomadd
)
3137 /* uninstall routes from vrf */
3138 uninstall_routes_for_vrf(bgp_vrf
);
3140 /* Cleanup the RT to VRF mapping */
3141 bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf
);
3143 /* Remove auto generated RT */
3144 evpn_auto_rt_import_delete_for_vrf(bgp_vrf
);
3146 /* Add the newly configured RT to RT list */
3147 listnode_add_sort(bgp_vrf
->vrf_import_rtl
, ecomadd
);
3148 SET_FLAG(bgp_vrf
->vrf_flags
, BGP_VRF_IMPORT_RT_CFGD
);
3150 /* map VRF to its RTs */
3151 bgp_evpn_map_vrf_to_its_rts(bgp_vrf
);
3153 /* install routes matching the new VRF */
3154 install_routes_for_vrf(bgp_vrf
);
3157 void bgp_evpn_unconfigure_import_rt_for_vrf(struct bgp
*bgp_vrf
,
3158 struct ecommunity
*ecomdel
)
3160 struct listnode
*node
= NULL
, *nnode
= NULL
, *node_to_del
= NULL
;
3161 struct ecommunity
*ecom
= NULL
;
3163 /* uninstall routes from vrf */
3164 uninstall_routes_for_vrf(bgp_vrf
);
3166 /* Cleanup the RT to VRF mapping */
3167 bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf
);
3169 /* remove the RT from the RT list */
3170 for (ALL_LIST_ELEMENTS(bgp_vrf
->vrf_import_rtl
, node
, nnode
, ecom
)) {
3171 if (ecommunity_match(ecom
, ecomdel
)) {
3172 ecommunity_free(&ecom
);
3179 list_delete_node(bgp_vrf
->vrf_import_rtl
, node_to_del
);
3181 /* fallback to auto import rt, if this was the last RT */
3182 if (list_isempty(bgp_vrf
->vrf_import_rtl
)) {
3183 UNSET_FLAG(bgp_vrf
->vrf_flags
, BGP_VRF_IMPORT_RT_CFGD
);
3184 evpn_auto_rt_import_add_for_vrf(bgp_vrf
);
3187 /* map VRFs to its RTs */
3188 bgp_evpn_map_vrf_to_its_rts(bgp_vrf
);
3190 /* install routes matching this new RT */
3191 install_routes_for_vrf(bgp_vrf
);
3194 void bgp_evpn_configure_export_rt_for_vrf(struct bgp
*bgp_vrf
,
3195 struct ecommunity
*ecomadd
)
3197 /* remove auto-generated RT */
3198 evpn_auto_rt_export_delete_for_vrf(bgp_vrf
);
3200 /* Add the new RT to the RT list */
3201 listnode_add_sort(bgp_vrf
->vrf_export_rtl
, ecomadd
);
3202 SET_FLAG(bgp_vrf
->vrf_flags
, BGP_VRF_EXPORT_RT_CFGD
);
3204 bgp_evpn_handle_export_rt_change_for_vrf(bgp_vrf
);
3208 void bgp_evpn_unconfigure_export_rt_for_vrf(struct bgp
*bgp_vrf
,
3209 struct ecommunity
*ecomdel
)
3211 struct listnode
*node
= NULL
, *nnode
= NULL
, *node_to_del
= NULL
;
3212 struct ecommunity
*ecom
= NULL
;
3214 /* Remove the RT from the RT list */
3215 for (ALL_LIST_ELEMENTS(bgp_vrf
->vrf_export_rtl
, node
, nnode
, ecom
)) {
3216 if (ecommunity_match(ecom
, ecomdel
)) {
3217 ecommunity_free(&ecom
);
3224 list_delete_node(bgp_vrf
->vrf_export_rtl
, node_to_del
);
3226 /* fall back to auto-generated RT if this was the last RT */
3227 if (list_isempty(bgp_vrf
->vrf_export_rtl
)) {
3228 UNSET_FLAG(bgp_vrf
->vrf_flags
, BGP_VRF_EXPORT_RT_CFGD
);
3229 evpn_auto_rt_export_add_for_vrf(bgp_vrf
);
3232 bgp_evpn_handle_export_rt_change_for_vrf(bgp_vrf
);
3236 * Handle change to BGP router id. This is invoked twice by the change
3237 * handler, first before the router id has been changed and then after
3238 * the router id has been changed. The first invocation will result in
3239 * local routes for all VNIs/VRF being deleted and withdrawn and the next
3240 * will result in the routes being re-advertised.
3242 void bgp_evpn_handle_router_id_update(struct bgp
*bgp
, int withdraw
)
3246 /* delete and withdraw all the type-5 routes
3247 stored in the global table for this vrf */
3248 withdraw_router_id_vrf(bgp
);
3250 /* delete all the VNI routes (type-2/type-3) routes for all the
3252 hash_iterate(bgp
->vnihash
,
3253 (void (*)(struct hash_backet
*,
3254 void *))withdraw_router_id_vni
,
3258 /* advertise all routes in the vrf as type-5 routes with the new
3260 update_router_id_vrf(bgp
);
3262 /* advertise all the VNI routes (type-2/type-3) routes with the
3264 hash_iterate(bgp
->vnihash
,
3265 (void (*)(struct hash_backet
*,
3266 void *))update_router_id_vni
,
3272 * Handle change to export RT - update and advertise local routes.
3274 int bgp_evpn_handle_export_rt_change(struct bgp
*bgp
, struct bgpevpn
*vpn
)
3276 return update_routes_for_vni(bgp
, vpn
);
3279 void bgp_evpn_handle_vrf_rd_change(struct bgp
*bgp_vrf
,
3283 delete_withdraw_vrf_routes(bgp_vrf
);
3285 update_advertise_vrf_routes(bgp_vrf
);
3289 * Handle change to RD. This is invoked twice by the change handler,
3290 * first before the RD has been changed and then after the RD has
3291 * been changed. The first invocation will result in local routes
3292 * of this VNI being deleted and withdrawn and the next will result
3293 * in the routes being re-advertised.
3295 void bgp_evpn_handle_rd_change(struct bgp
*bgp
, struct bgpevpn
*vpn
,
3299 delete_withdraw_vni_routes(bgp
, vpn
);
3301 update_advertise_vni_routes(bgp
, vpn
);
3305 * Install routes for this VNI. Invoked upon change to Import RT.
3307 int bgp_evpn_install_routes(struct bgp
*bgp
, struct bgpevpn
*vpn
)
3309 return install_routes_for_vni(bgp
, vpn
);
3313 * Uninstall all routes installed for this VNI. Invoked upon change
3316 int bgp_evpn_uninstall_routes(struct bgp
*bgp
, struct bgpevpn
*vpn
)
3318 return uninstall_routes_for_vni(bgp
, vpn
);
3322 * Function to display "tag" in route as a VNI.
3324 char *bgp_evpn_label2str(mpls_label_t
*label
, char *buf
, int len
)
3328 vni
= label2vni(label
);
3329 snprintf(buf
, len
, "%u", vni
);
3334 * Function to convert evpn route to json format.
3335 * NOTE: We don't use prefix2str as the output here is a bit different.
3337 void bgp_evpn_route2json(struct prefix_evpn
*p
, json_object
*json
)
3339 char buf1
[ETHER_ADDR_STRLEN
];
3340 char buf2
[PREFIX2STR_BUFFER
];
3345 if (p
->prefix
.route_type
== BGP_EVPN_IMET_ROUTE
) {
3346 json_object_int_add(json
, "routeType", p
->prefix
.route_type
);
3347 json_object_int_add(json
, "ethTag", 0);
3348 json_object_int_add(json
, "ipLen",
3349 IS_EVPN_PREFIX_IPADDR_V4(p
)
3352 json_object_string_add(json
, "ip",
3353 inet_ntoa(p
->prefix
.ip
.ipaddr_v4
));
3354 } else if (p
->prefix
.route_type
== BGP_EVPN_MAC_IP_ROUTE
) {
3355 if (IS_EVPN_PREFIX_IPADDR_NONE(p
)) {
3356 json_object_int_add(json
, "routeType",
3357 p
->prefix
.route_type
);
3358 json_object_int_add(
3360 0); /* TODO: we don't support esi yet */
3361 json_object_int_add(json
, "ethTag", 0);
3362 json_object_int_add(json
, "macLen", 8 * ETH_ALEN
);
3363 json_object_string_add(json
, "mac",
3364 prefix_mac2str(&p
->prefix
.mac
,
3370 family
= IS_EVPN_PREFIX_IPADDR_V4(p
) ? AF_INET
3373 json_object_int_add(json
, "routeType",
3374 p
->prefix
.route_type
);
3375 json_object_int_add(
3377 0); /* TODO: we don't support esi yet */
3378 json_object_int_add(json
, "ethTag", 0);
3379 json_object_int_add(json
, "macLen", 8 * ETH_ALEN
);
3380 json_object_string_add(json
, "mac",
3381 prefix_mac2str(&p
->prefix
.mac
,
3384 json_object_int_add(json
, "ipLen",
3385 IS_EVPN_PREFIX_IPADDR_V4(p
)
3388 json_object_string_add(
3390 inet_ntop(family
, &p
->prefix
.ip
.ip
.addr
, buf2
,
3391 PREFIX2STR_BUFFER
));
3394 /* Currently, this is to cater to other AF_ETHERNET code. */
3399 * Function to convert evpn route to string.
3400 * NOTE: We don't use prefix2str as the output here is a bit different.
3402 char *bgp_evpn_route2str(struct prefix_evpn
*p
, char *buf
, int len
)
3404 char buf1
[ETHER_ADDR_STRLEN
];
3405 char buf2
[PREFIX2STR_BUFFER
];
3407 if (p
->prefix
.route_type
== BGP_EVPN_IMET_ROUTE
) {
3408 snprintf(buf
, len
, "[%d]:[0]:[%d]:[%s]", p
->prefix
.route_type
,
3409 IS_EVPN_PREFIX_IPADDR_V4(p
) ? IPV4_MAX_BITLEN
3411 inet_ntoa(p
->prefix
.ip
.ipaddr_v4
));
3412 } else if (p
->prefix
.route_type
== BGP_EVPN_MAC_IP_ROUTE
) {
3413 if (IS_EVPN_PREFIX_IPADDR_NONE(p
))
3414 snprintf(buf
, len
, "[%d]:[0]:[0]:[%d]:[%s]",
3415 p
->prefix
.route_type
, 8 * ETH_ALEN
,
3416 prefix_mac2str(&p
->prefix
.mac
, buf1
,
3421 family
= IS_EVPN_PREFIX_IPADDR_V4(p
) ? AF_INET
3423 snprintf(buf
, len
, "[%d]:[0]:[0]:[%d]:[%s]:[%d]:[%s]",
3424 p
->prefix
.route_type
, 8 * ETH_ALEN
,
3425 prefix_mac2str(&p
->prefix
.mac
, buf1
,
3427 family
== AF_INET
? IPV4_MAX_BITLEN
3429 inet_ntop(family
, &p
->prefix
.ip
.ip
.addr
, buf2
,
3430 PREFIX2STR_BUFFER
));
3432 } else if (p
->prefix
.route_type
== BGP_EVPN_IP_PREFIX_ROUTE
) {
3433 snprintf(buf
, len
, "[%d]:[0]:[%d]:[%s]",
3434 p
->prefix
.route_type
,
3435 p
->prefix
.ip_prefix_length
,
3436 IS_EVPN_PREFIX_IPADDR_V4(p
) ?
3437 inet_ntoa(p
->prefix
.ip
.ipaddr_v4
) :
3438 inet6_ntoa(p
->prefix
.ip
.ipaddr_v6
));
3440 /* For EVPN route types not supported yet. */
3441 snprintf(buf
, len
, "(unsupported route type %d)",
3442 p
->prefix
.route_type
);
3449 * Encode EVPN prefix in Update (MP_REACH)
3451 void bgp_evpn_encode_prefix(struct stream
*s
, struct prefix
*p
,
3452 struct prefix_rd
*prd
, mpls_label_t
*label
,
3453 struct attr
*attr
, int addpath_encode
,
3454 u_int32_t addpath_tx_id
)
3456 struct prefix_evpn
*evp
= (struct prefix_evpn
*)p
;
3460 stream_putl(s
, addpath_tx_id
);
3463 stream_putc(s
, evp
->prefix
.route_type
);
3465 switch (evp
->prefix
.route_type
) {
3466 case BGP_EVPN_MAC_IP_ROUTE
:
3467 if (IS_EVPN_PREFIX_IPADDR_V4(evp
))
3468 ipa_len
= IPV4_MAX_BYTELEN
;
3469 else if (IS_EVPN_PREFIX_IPADDR_V6(evp
))
3470 ipa_len
= IPV6_MAX_BYTELEN
;
3471 stream_putc(s
, 33 + ipa_len
); // 1 VNI
3472 stream_put(s
, prd
->val
, 8); /* RD */
3473 stream_put(s
, 0, 10); /* ESI */
3474 stream_putl(s
, 0); /* Ethernet Tag ID */
3475 stream_putc(s
, 8 * ETH_ALEN
); /* Mac Addr Len - bits */
3476 stream_put(s
, evp
->prefix
.mac
.octet
, 6); /* Mac Addr */
3477 stream_putc(s
, 8 * ipa_len
); /* IP address Length */
3479 stream_put(s
, &evp
->prefix
.ip
.ip
.addr
,
3481 stream_put(s
, label
,
3482 BGP_LABEL_BYTES
); /* VNI is contained in 'tag' */
3485 case BGP_EVPN_IMET_ROUTE
:
3486 stream_putc(s
, 17); // TODO: length - assumes IPv4 address
3487 stream_put(s
, prd
->val
, 8); /* RD */
3488 stream_putl(s
, 0); /* Ethernet Tag ID */
3489 stream_putc(s
, IPV4_MAX_BITLEN
); /* IP address Length - bits */
3490 /* Originating Router's IP Addr */
3491 stream_put_in_addr(s
, &evp
->prefix
.ip
.ipaddr_v4
);
3494 case BGP_EVPN_IP_PREFIX_ROUTE
:
3495 /* TODO: AddPath support. */
3496 evpn_mpattr_encode_type5(s
, p
, prd
, label
, attr
);
3504 int bgp_nlri_parse_evpn(struct peer
*peer
, struct attr
*attr
,
3505 struct bgp_nlri
*packet
, int withdraw
)
3511 u_int32_t addpath_id
;
3512 int addpath_encoded
;
3518 /* Check peer status. */
3519 if (peer
->status
!= Established
) {
3520 zlog_err("%u:%s - EVPN update received in state %d",
3521 peer
->bgp
->vrf_id
, peer
->host
, peer
->status
);
3525 /* Start processing the NLRI - there may be multiple in the MP_REACH */
3527 lim
= pnt
+ packet
->length
;
3529 safi
= packet
->safi
;
3533 (CHECK_FLAG(peer
->af_cap
[afi
][safi
], PEER_CAP_ADDPATH_AF_RX_ADV
)
3534 && CHECK_FLAG(peer
->af_cap
[afi
][safi
],
3535 PEER_CAP_ADDPATH_AF_TX_RCV
));
3537 for (; pnt
< lim
; pnt
+= psize
) {
3538 /* Clear prefix structure. */
3539 memset(&p
, 0, sizeof(struct prefix
));
3541 /* Deal with path-id if AddPath is supported. */
3542 if (addpath_encoded
) {
3543 /* When packet overflow occurs return immediately. */
3544 if (pnt
+ BGP_ADDPATH_ID_LEN
> lim
)
3547 addpath_id
= ntohl(*((uint32_t *)pnt
));
3548 pnt
+= BGP_ADDPATH_ID_LEN
;
3551 /* All EVPN NLRI types start with type and length. */
3556 psize
= rlen
= *pnt
++;
3558 /* When packet overflow occur return immediately. */
3559 if (pnt
+ psize
> lim
)
3563 case BGP_EVPN_MAC_IP_ROUTE
:
3564 if (process_type2_route(peer
, afi
, safi
,
3565 withdraw
? NULL
: attr
, pnt
,
3566 psize
, addpath_id
)) {
3568 "%u:%s - Error in processing EVPN type-2 NLRI size %d",
3569 peer
->bgp
->vrf_id
, peer
->host
, psize
);
3574 case BGP_EVPN_IMET_ROUTE
:
3575 if (process_type3_route(peer
, afi
, safi
,
3576 withdraw
? NULL
: attr
, pnt
,
3577 psize
, addpath_id
)) {
3579 "%u:%s - Error in processing EVPN type-3 NLRI size %d",
3580 peer
->bgp
->vrf_id
, peer
->host
, psize
);
3585 case BGP_EVPN_IP_PREFIX_ROUTE
:
3586 if (process_type5_route(peer
, afi
, safi
, attr
, pnt
,
3587 psize
, addpath_id
, withdraw
)) {
3589 "%u:%s - Error in processing EVPN type-5 NLRI size %d",
3590 peer
->bgp
->vrf_id
, peer
->host
, psize
);
3600 /* Packet length consistency check. */
3608 * Map the RTs (configured or automatically derived) of a VRF to the VRF.
3609 * The mapping will be used during route processing.
3610 * bgp_def: default bgp instance
3611 * bgp_vrf: specific bgp vrf instance on which RT is configured
3613 void bgp_evpn_map_vrf_to_its_rts(struct bgp
*bgp_vrf
)
3616 struct ecommunity_val
*eval
= NULL
;
3617 struct listnode
*node
= NULL
, *nnode
= NULL
;
3618 struct ecommunity
*ecom
= NULL
;
3620 for (ALL_LIST_ELEMENTS(bgp_vrf
->vrf_import_rtl
, node
, nnode
, ecom
)) {
3621 for (i
= 0; i
< ecom
->size
; i
++) {
3622 eval
= (struct ecommunity_val
*)(ecom
->val
3624 * ECOMMUNITY_SIZE
));
3625 map_vrf_to_rt(bgp_vrf
, eval
);
3631 * Unmap the RTs (configured or automatically derived) of a VRF from the VRF.
3633 void bgp_evpn_unmap_vrf_from_its_rts(struct bgp
*bgp_vrf
)
3636 struct ecommunity_val
*eval
;
3637 struct listnode
*node
, *nnode
;
3638 struct ecommunity
*ecom
;
3640 for (ALL_LIST_ELEMENTS(bgp_vrf
->vrf_import_rtl
, node
, nnode
, ecom
)) {
3641 for (i
= 0; i
< ecom
->size
; i
++) {
3642 struct vrf_irt_node
*irt
;
3643 struct ecommunity_val eval_tmp
;
3645 eval
= (struct ecommunity_val
*)(ecom
->val
3647 * ECOMMUNITY_SIZE
));
3648 /* If using "automatic" RT, we only care about the
3649 * local-admin sub-field.
3650 * This is to facilitate using VNI as the RT for EBGP
3653 memcpy(&eval_tmp
, eval
, ECOMMUNITY_SIZE
);
3654 if (!CHECK_FLAG(bgp_vrf
->vrf_flags
,
3655 BGP_VRF_IMPORT_RT_CFGD
))
3656 mask_ecom_global_admin(&eval_tmp
, eval
);
3658 irt
= lookup_vrf_import_rt(&eval_tmp
);
3660 unmap_vrf_from_rt(bgp_vrf
, irt
);
3668 * Map the RTs (configured or automatically derived) of a VNI to the VNI.
3669 * The mapping will be used during route processing.
3671 void bgp_evpn_map_vni_to_its_rts(struct bgp
*bgp
, struct bgpevpn
*vpn
)
3674 struct ecommunity_val
*eval
;
3675 struct listnode
*node
, *nnode
;
3676 struct ecommunity
*ecom
;
3678 for (ALL_LIST_ELEMENTS(vpn
->import_rtl
, node
, nnode
, ecom
)) {
3679 for (i
= 0; i
< ecom
->size
; i
++) {
3680 eval
= (struct ecommunity_val
*)(ecom
->val
3682 * ECOMMUNITY_SIZE
));
3683 map_vni_to_rt(bgp
, vpn
, eval
);
3689 * Unmap the RTs (configured or automatically derived) of a VNI from the VNI.
3691 void bgp_evpn_unmap_vni_from_its_rts(struct bgp
*bgp
, struct bgpevpn
*vpn
)
3694 struct ecommunity_val
*eval
;
3695 struct listnode
*node
, *nnode
;
3696 struct ecommunity
*ecom
;
3698 for (ALL_LIST_ELEMENTS(vpn
->import_rtl
, node
, nnode
, ecom
)) {
3699 for (i
= 0; i
< ecom
->size
; i
++) {
3700 struct irt_node
*irt
;
3701 struct ecommunity_val eval_tmp
;
3703 eval
= (struct ecommunity_val
*)(ecom
->val
3705 * ECOMMUNITY_SIZE
));
3706 /* If using "automatic" RT, we only care about the
3707 * local-admin sub-field.
3708 * This is to facilitate using VNI as the RT for EBGP
3711 memcpy(&eval_tmp
, eval
, ECOMMUNITY_SIZE
);
3712 if (!is_import_rt_configured(vpn
))
3713 mask_ecom_global_admin(&eval_tmp
, eval
);
3715 irt
= lookup_import_rt(bgp
, &eval_tmp
);
3717 unmap_vni_from_rt(bgp
, vpn
, irt
);
3723 * Derive Import RT automatically for VNI and map VNI to RT.
3724 * The mapping will be used during route processing.
3726 void bgp_evpn_derive_auto_rt_import(struct bgp
*bgp
, struct bgpevpn
*vpn
)
3728 form_auto_rt(bgp
, vpn
->vni
, vpn
->import_rtl
);
3729 UNSET_FLAG(vpn
->flags
, VNI_FLAG_IMPRT_CFGD
);
3732 bgp_evpn_map_vni_to_its_rts(bgp
, vpn
);
3736 * Derive Export RT automatically for VNI.
3738 void bgp_evpn_derive_auto_rt_export(struct bgp
*bgp
, struct bgpevpn
*vpn
)
3740 form_auto_rt(bgp
, vpn
->vni
, vpn
->export_rtl
);
3741 UNSET_FLAG(vpn
->flags
, VNI_FLAG_EXPRT_CFGD
);
3745 * Derive RD automatically for VNI using passed information - it
3746 * is of the form RouterId:unique-id-for-vni.
3748 void bgp_evpn_derive_auto_rd_for_vrf(struct bgp
*bgp
)
3752 bgp
->vrf_prd
.family
= AF_UNSPEC
;
3753 bgp
->vrf_prd
.prefixlen
= 64;
3754 sprintf(buf
, "%s:%hu", inet_ntoa(bgp
->router_id
), bgp
->vrf_rd_id
);
3755 str2prefix_rd(buf
, &bgp
->vrf_prd
);
3759 * Derive RD automatically for VNI using passed information - it
3760 * is of the form RouterId:unique-id-for-vni.
3762 void bgp_evpn_derive_auto_rd(struct bgp
*bgp
, struct bgpevpn
*vpn
)
3766 vpn
->prd
.family
= AF_UNSPEC
;
3767 vpn
->prd
.prefixlen
= 64;
3768 sprintf(buf
, "%s:%hu", inet_ntoa(bgp
->router_id
), vpn
->rd_id
);
3769 (void)str2prefix_rd(buf
, &vpn
->prd
);
3770 UNSET_FLAG(vpn
->flags
, VNI_FLAG_RD_CFGD
);
3776 struct bgpevpn
*bgp_evpn_lookup_vni(struct bgp
*bgp
, vni_t vni
)
3778 struct bgpevpn
*vpn
;
3781 memset(&tmp
, 0, sizeof(struct bgpevpn
));
3783 vpn
= hash_lookup(bgp
->vnihash
, &tmp
);
3788 * Create a new vpn - invoked upon configuration or zebra notification.
3790 struct bgpevpn
*bgp_evpn_new(struct bgp
*bgp
, vni_t vni
,
3791 struct in_addr originator_ip
,
3792 vrf_id_t tenant_vrf_id
)
3794 struct bgpevpn
*vpn
;
3799 vpn
= XCALLOC(MTYPE_BGP_EVPN
, sizeof(struct bgpevpn
));
3803 /* Set values - RD and RT set to defaults. */
3805 vpn
->originator_ip
= originator_ip
;
3806 vpn
->tenant_vrf_id
= tenant_vrf_id
;
3808 /* Initialize route-target import and export lists */
3809 vpn
->import_rtl
= list_new();
3810 vpn
->import_rtl
->cmp
= (int (*)(void *, void *))evpn_route_target_cmp
;
3811 vpn
->export_rtl
= list_new();
3812 vpn
->export_rtl
->cmp
= (int (*)(void *, void *))evpn_route_target_cmp
;
3813 bf_assign_index(bm
->rd_idspace
, vpn
->rd_id
);
3814 derive_rd_rt_for_vni(bgp
, vpn
);
3816 /* Initialize EVPN route table. */
3817 vpn
->route_table
= bgp_table_init(AFI_L2VPN
, SAFI_EVPN
);
3820 if (!hash_get(bgp
->vnihash
, vpn
, hash_alloc_intern
)) {
3821 XFREE(MTYPE_BGP_EVPN
, vpn
);
3825 /* add to l2vni list on corresponding vrf */
3826 bgpevpn_link_to_l3vni(vpn
);
3828 QOBJ_REG(vpn
, bgpevpn
);
3833 * Free a given VPN - called in multiple scenarios such as zebra
3834 * notification, configuration being deleted, advertise-all-vni disabled etc.
3835 * This just frees appropriate memory, caller should have taken other
3838 void bgp_evpn_free(struct bgp
*bgp
, struct bgpevpn
*vpn
)
3840 bgpevpn_unlink_from_l3vni(vpn
);
3841 bgp_table_unlock(vpn
->route_table
);
3842 bgp_evpn_unmap_vni_from_its_rts(bgp
, vpn
);
3843 list_delete_and_null(&vpn
->import_rtl
);
3844 list_delete_and_null(&vpn
->export_rtl
);
3845 bf_release_index(bm
->rd_idspace
, vpn
->rd_id
);
3846 hash_release(bgp
->vnihash
, vpn
);
3848 XFREE(MTYPE_BGP_EVPN
, vpn
);
3852 * Import route into matching VNI(s).
3854 int bgp_evpn_import_route(struct bgp
*bgp
, afi_t afi
, safi_t safi
,
3855 struct prefix
*p
, struct bgp_info
*ri
)
3857 return install_uninstall_evpn_route(bgp
, afi
, safi
, p
, ri
, 1);
3861 * Unimport route from matching VNI(s).
3863 int bgp_evpn_unimport_route(struct bgp
*bgp
, afi_t afi
, safi_t safi
,
3864 struct prefix
*p
, struct bgp_info
*ri
)
3866 return install_uninstall_evpn_route(bgp
, afi
, safi
, p
, ri
, 0);
3869 /* filter routes which have martian next hops */
3870 int bgp_filter_evpn_routes_upon_martian_nh_change(struct bgp
*bgp
)
3874 struct bgp_node
*rd_rn
, *rn
;
3875 struct bgp_table
*table
;
3876 struct bgp_info
*ri
;
3881 /* Walk entire global routing table and evaluate routes which could be
3882 * imported into this VPN. Note that we cannot just look at the routes
3883 * for the VNI's RD -
3884 * remote routes applicable for this VNI could have any RD.
3886 /* EVPN routes are a 2-level table. */
3887 for (rd_rn
= bgp_table_top(bgp
->rib
[afi
][safi
]); rd_rn
;
3888 rd_rn
= bgp_route_next(rd_rn
)) {
3889 table
= (struct bgp_table
*)(rd_rn
->info
);
3893 for (rn
= bgp_table_top(table
); rn
; rn
= bgp_route_next(rn
)) {
3895 for (ri
= rn
->info
; ri
; ri
= ri
->next
) {
3897 /* Consider "valid" remote routes applicable for
3899 if (!(ri
->type
== ZEBRA_ROUTE_BGP
3900 && ri
->sub_type
== BGP_ROUTE_NORMAL
))
3903 if (bgp_nexthop_self(bgp
, ri
->attr
->nexthop
)) {
3905 char attr_str
[BUFSIZ
];
3906 char pbuf
[PREFIX_STRLEN
];
3908 bgp_dump_attr(ri
->attr
, attr_str
,
3911 if (bgp_debug_update(ri
->peer
, &rn
->p
,
3914 "%u: prefix %s with attr %s - DENIED due to martian or self nexthop",
3921 bgp_evpn_unimport_route(bgp
, afi
, safi
,
3924 bgp_rib_remove(rn
, ri
, ri
->peer
, afi
,
3935 * Handle del of a local MACIP.
3937 int bgp_evpn_local_macip_del(struct bgp
*bgp
, vni_t vni
, struct ethaddr
*mac
,
3940 struct bgpevpn
*vpn
;
3941 struct prefix_evpn p
;
3943 if (!bgp
->vnihash
) {
3944 zlog_err("%u: VNI hash not created", bgp
->vrf_id
);
3948 /* Lookup VNI hash - should exist. */
3949 vpn
= bgp_evpn_lookup_vni(bgp
, vni
);
3950 if (!vpn
|| !is_vni_live(vpn
)) {
3951 zlog_warn("%u: VNI hash entry for VNI %u %s at MACIP DEL",
3952 bgp
->vrf_id
, vni
, vpn
? "not live" : "not found");
3956 /* Remove EVPN type-2 route and schedule for processing. */
3957 build_evpn_type2_prefix(&p
, mac
, ip
);
3958 delete_evpn_route(bgp
, vpn
, &p
);
3964 * Handle add of a local MACIP.
3966 int bgp_evpn_local_macip_add(struct bgp
*bgp
, vni_t vni
, struct ethaddr
*mac
,
3967 struct ipaddr
*ip
, u_char flags
)
3969 struct bgpevpn
*vpn
;
3970 struct prefix_evpn p
;
3972 if (!bgp
->vnihash
) {
3973 zlog_err("%u: VNI hash not created", bgp
->vrf_id
);
3977 /* Lookup VNI hash - should exist. */
3978 vpn
= bgp_evpn_lookup_vni(bgp
, vni
);
3979 if (!vpn
|| !is_vni_live(vpn
)) {
3980 zlog_warn("%u: VNI hash entry for VNI %u %s at MACIP ADD",
3981 bgp
->vrf_id
, vni
, vpn
? "not live" : "not found");
3985 /* Create EVPN type-2 route and schedule for processing. */
3986 build_evpn_type2_prefix(&p
, mac
, ip
);
3987 if (update_evpn_route(bgp
, vpn
, &p
, flags
)) {
3988 char buf
[ETHER_ADDR_STRLEN
];
3989 char buf2
[INET6_ADDRSTRLEN
];
3992 "%u:Failed to create Type-2 route, VNI %u %s MAC %s IP %s",
3993 bgp
->vrf_id
, vpn
->vni
,
3994 CHECK_FLAG(flags
, ZEBRA_MAC_TYPE_STICKY
) ? "sticky gateway"
3996 prefix_mac2str(mac
, buf
, sizeof(buf
)),
3997 ipaddr2str(ip
, buf2
, sizeof(buf2
)));
4004 static void link_l2vni_hash_to_l3vni(struct hash_backet
*backet
,
4005 struct bgp
*bgp_vrf
)
4007 struct bgpevpn
*vpn
= NULL
;
4008 struct bgp
*bgp_def
= NULL
;
4010 bgp_def
= bgp_get_default();
4013 vpn
= (struct bgpevpn
*)backet
->data
;
4014 if (vpn
->tenant_vrf_id
== bgp_vrf
->vrf_id
)
4015 bgpevpn_link_to_l3vni(vpn
);
4018 int bgp_evpn_local_l3vni_add(vni_t l3vni
,
4020 struct ethaddr
*rmac
,
4021 struct in_addr originator_ip
)
4023 struct bgp
*bgp_vrf
= NULL
; /* bgp VRF instance */
4024 struct bgp
*bgp_def
= NULL
; /* default bgp instance */
4025 struct listnode
*node
= NULL
;
4026 struct bgpevpn
*vpn
= NULL
;
4029 /* get the default instamce - required to get the AS number for VRF
4031 bgp_def
= bgp_get_default();
4033 zlog_err("Cannot process L3VNI %u ADD - default BGP instance not yet created",
4039 /* if the BGP vrf instance doesnt exist - create one */
4040 bgp_vrf
= bgp_lookup_by_name(vrf_id_to_name(vrf_id
));
4045 ret
= bgp_get(&bgp_vrf
, &as
, vrf_id_to_name(vrf_id
),
4046 BGP_INSTANCE_TYPE_VRF
);
4048 case BGP_ERR_MULTIPLE_INSTANCE_NOT_SET
:
4049 zlog_err("'bgp multiple-instance' not present\n");
4051 case BGP_ERR_AS_MISMATCH
:
4052 zlog_err("BGP is already running; AS is %u\n", as
);
4054 case BGP_ERR_INSTANCE_MISMATCH
:
4055 zlog_err("BGP instance name and AS number mismatch\n");
4059 /* mark as auto created */
4060 SET_FLAG(bgp_vrf
->vrf_flags
, BGP_VRF_AUTO
);
4063 /* associate with l3vni */
4064 bgp_vrf
->l3vni
= l3vni
;
4066 /* set the router mac - to be used in mac-ip routes for this vrf */
4067 memcpy(&bgp_vrf
->rmac
, rmac
, sizeof(struct ethaddr
));
4069 /* set the originator ip */
4070 bgp_vrf
->originator_ip
= originator_ip
;
4072 /* auto derive RD/RT */
4073 if (!CHECK_FLAG(bgp_vrf
->vrf_flags
, BGP_VRF_IMPORT_RT_CFGD
))
4074 evpn_auto_rt_import_add_for_vrf(bgp_vrf
);
4075 if (!CHECK_FLAG(bgp_vrf
->vrf_flags
, BGP_VRF_EXPORT_RT_CFGD
))
4076 evpn_auto_rt_export_add_for_vrf(bgp_vrf
);
4077 bgp_evpn_derive_auto_rd_for_vrf(bgp_vrf
);
4079 /* link all corresponding l2vnis */
4080 hash_iterate(bgp_def
->vnihash
,
4081 (void (*)(struct hash_backet
*, void *))
4082 link_l2vni_hash_to_l3vni
,
4085 /* updates all corresponding local mac-ip routes */
4086 for (ALL_LIST_ELEMENTS_RO(bgp_vrf
->l2vnis
, node
, vpn
))
4087 update_routes_for_vni(bgp_def
, vpn
);
4089 /* advertise type-5 routes if needed */
4090 update_advertise_vrf_routes(bgp_vrf
);
4092 /* install all remote routes belonging to this l3vni into correspondng
4094 install_routes_for_vrf(bgp_vrf
);
4099 int bgp_evpn_local_l3vni_del(vni_t l3vni
,
4102 struct bgp
*bgp_vrf
= NULL
; /* bgp vrf instance */
4103 struct bgp
*bgp_def
= NULL
; /* default bgp instance */
4104 struct listnode
*node
= NULL
;
4105 struct bgpevpn
*vpn
= NULL
;
4107 bgp_vrf
= bgp_lookup_by_vrf_id(vrf_id
);
4109 zlog_err("Cannot process L3VNI %u Del - Could not find BGP instance",
4114 bgp_def
= bgp_get_default();
4116 zlog_err("Cannot process L3VNI %u Del - Could not find default BGP instance",
4121 /* unimport remote routes from VRF, if it is AUTO vrf bgp_delete will
4122 * take care of uninstalling the routes from zebra */
4123 if (!CHECK_FLAG(bgp_vrf
->vrf_flags
, BGP_VRF_AUTO
))
4124 uninstall_routes_for_vrf(bgp_vrf
);
4126 /* delete/withdraw all type-5 routes */
4127 delete_withdraw_vrf_routes(bgp_vrf
);
4129 /* remove the l3vni from vrf instance */
4132 /* remove the Rmac from the BGP vrf */
4133 memset(&bgp_vrf
->rmac
, 0, sizeof(struct ethaddr
));
4136 if (bgp_vrf
->vrf_import_rtl
&& !list_isempty(bgp_vrf
->vrf_import_rtl
)) {
4137 bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf
);
4138 list_delete_all_node(bgp_vrf
->vrf_import_rtl
);
4140 if (bgp_vrf
->vrf_export_rtl
&& !list_isempty(bgp_vrf
->vrf_export_rtl
)) {
4141 list_delete_all_node(bgp_vrf
->vrf_export_rtl
);
4144 /* update all corresponding local mac-ip routes */
4145 for (ALL_LIST_ELEMENTS_RO(bgp_vrf
->l2vnis
, node
, vpn
))
4146 update_routes_for_vni(bgp_def
, vpn
);
4149 /* Delete the instance if it was autocreated */
4150 if (CHECK_FLAG(bgp_vrf
->vrf_flags
, BGP_VRF_AUTO
))
4151 bgp_delete(bgp_vrf
);
4157 * Handle del of a local VNI.
4159 int bgp_evpn_local_vni_del(struct bgp
*bgp
, vni_t vni
)
4161 struct bgpevpn
*vpn
;
4163 if (!bgp
->vnihash
) {
4164 zlog_err("%u: VNI hash not created", bgp
->vrf_id
);
4168 /* Locate VNI hash */
4169 vpn
= bgp_evpn_lookup_vni(bgp
, vni
);
4171 zlog_warn("%u: VNI hash entry for VNI %u not found at DEL",
4176 /* Remove all local EVPN routes and schedule for processing (to
4177 * withdraw from peers).
4179 delete_routes_for_vni(bgp
, vpn
);
4182 * tunnel is no longer active, del tunnel ip address from tip_hash
4184 bgp_tip_del(bgp
, &vpn
->originator_ip
);
4186 /* Clear "live" flag and see if hash needs to be freed. */
4187 UNSET_FLAG(vpn
->flags
, VNI_FLAG_LIVE
);
4188 if (!is_vni_configured(vpn
))
4189 bgp_evpn_free(bgp
, vpn
);
4195 * Handle add (or update) of a local VNI. The only VNI change we care
4196 * about is change to local-tunnel-ip.
4198 int bgp_evpn_local_vni_add(struct bgp
*bgp
, vni_t vni
,
4199 struct in_addr originator_ip
,
4200 vrf_id_t tenant_vrf_id
)
4202 struct bgpevpn
*vpn
;
4203 struct prefix_evpn p
;
4205 if (!bgp
->vnihash
) {
4206 zlog_err("%u: VNI hash not created", bgp
->vrf_id
);
4210 /* Lookup VNI. If present and no change, exit. */
4211 vpn
= bgp_evpn_lookup_vni(bgp
, vni
);
4214 /* update tenant_vrf_id if required */
4215 if (vpn
->tenant_vrf_id
!= tenant_vrf_id
) {
4216 bgpevpn_unlink_from_l3vni(vpn
);
4217 vpn
->tenant_vrf_id
= tenant_vrf_id
;
4218 bgpevpn_link_to_l3vni(vpn
);
4220 /* update all routes with new export RT for VRFs */
4221 update_routes_for_vni(bgp
, vpn
);
4224 if (is_vni_live(vpn
)
4225 && IPV4_ADDR_SAME(&vpn
->originator_ip
, &originator_ip
))
4226 /* Probably some other param has changed that we don't
4230 /* Local tunnel endpoint IP address has changed */
4231 handle_tunnel_ip_change(bgp
, vpn
, originator_ip
);
4234 /* Create or update as appropriate. */
4236 vpn
= bgp_evpn_new(bgp
, vni
, originator_ip
, tenant_vrf_id
);
4239 "%u: Failed to allocate VNI entry for VNI %u - at Add",
4245 /* if the VNI is live already, there is nothing more to do */
4246 if (is_vni_live(vpn
))
4249 /* Mark as "live" */
4250 SET_FLAG(vpn
->flags
, VNI_FLAG_LIVE
);
4252 /* tunnel is now active, add tunnel-ip to db */
4253 bgp_tip_add(bgp
, &originator_ip
);
4255 /* filter routes as nexthop database has changed */
4256 bgp_filter_evpn_routes_upon_martian_nh_change(bgp
);
4258 /* Create EVPN type-3 route and schedule for processing. */
4259 build_evpn_type3_prefix(&p
, vpn
->originator_ip
);
4260 if (update_evpn_route(bgp
, vpn
, &p
, 0)) {
4261 zlog_err("%u: Type3 route creation failure for VNI %u",
4266 /* If we have learnt and retained remote routes (VTEPs, MACs) for this
4270 install_routes_for_vni(bgp
, vpn
);
4272 /* If we are advertising gateway mac-ip
4273 It needs to be conveyed again to zebra */
4274 bgp_zebra_advertise_gw_macip(bgp
, vpn
->advertise_gw_macip
, vpn
->vni
);
4280 * Cleanup EVPN information on disable - Need to delete and withdraw
4281 * EVPN routes from peers.
4283 void bgp_evpn_cleanup_on_disable(struct bgp
*bgp
)
4285 hash_iterate(bgp
->vnihash
, (void (*)(struct hash_backet
*,
4286 void *))cleanup_vni_on_disable
,
4291 * Cleanup EVPN information - invoked at the time of bgpd exit or when the
4292 * BGP instance (default) is being freed.
4294 void bgp_evpn_cleanup(struct bgp
*bgp
)
4297 hash_iterate(bgp
->vnihash
, (void (*)(struct hash_backet
*,
4298 void *))free_vni_entry
,
4300 if (bgp
->import_rt_hash
)
4301 hash_free(bgp
->import_rt_hash
);
4302 bgp
->import_rt_hash
= NULL
;
4303 if (bgp
->vrf_import_rt_hash
)
4304 hash_free(bgp
->vrf_import_rt_hash
);
4305 bgp
->vrf_import_rt_hash
= NULL
;
4307 hash_free(bgp
->vnihash
);
4308 bgp
->vnihash
= NULL
;
4309 if (bgp
->vrf_import_rtl
)
4310 list_delete_and_null(&bgp
->vrf_import_rtl
);
4311 bgp
->vrf_import_rtl
= NULL
;
4312 if (bgp
->vrf_export_rtl
)
4313 list_delete_and_null(&bgp
->vrf_export_rtl
);
4314 bgp
->vrf_export_rtl
= NULL
;
4316 list_delete_and_null(&bgp
->l2vnis
);
4318 bf_release_index(bm
->rd_idspace
, bgp
->vrf_rd_id
);
4322 * Initialization for EVPN
4325 * hash for RT to VNI
4326 * assign a unique rd id for auto derivation of vrf_prd
4328 void bgp_evpn_init(struct bgp
*bgp
)
4331 hash_create(vni_hash_key_make
, vni_hash_cmp
, "BGP VNI Hash");
4332 bgp
->import_rt_hash
=
4333 hash_create(import_rt_hash_key_make
, import_rt_hash_cmp
,
4334 "BGP Import RT Hash");
4335 bgp
->vrf_import_rt_hash
=
4336 hash_create(vrf_import_rt_hash_key_make
, vrf_import_rt_hash_cmp
,
4337 "BGP VRF Import RT Hash");
4338 bgp
->vrf_import_rtl
= list_new();
4339 bgp
->vrf_import_rtl
->cmp
=
4340 (int (*)(void *, void *))evpn_route_target_cmp
;
4342 bgp
->vrf_export_rtl
= list_new();
4343 bgp
->vrf_export_rtl
->cmp
=
4344 (int (*)(void *, void *))evpn_route_target_cmp
;
4345 bgp
->l2vnis
= list_new();
4347 (int (*)(void *, void *))vni_hash_cmp
;
4348 bf_assign_index(bm
->rd_idspace
, bgp
->vrf_rd_id
);
4352 void bgp_evpn_vrf_delete(struct bgp
*bgp_vrf
)
4354 bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf
);