1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /* EVPN Multihoming procedures
4 * Copyright (C) 2019 Cumulus Networks, Inc.
21 #include "lib/printfrr.h"
23 #include "bgpd/bgp_attr_evpn.h"
24 #include "bgpd/bgpd.h"
25 #include "bgpd/bgp_table.h"
26 #include "bgpd/bgp_route.h"
27 #include "bgpd/bgp_attr.h"
28 #include "bgpd/bgp_mplsvpn.h"
29 #include "bgpd/bgp_evpn.h"
30 #include "bgpd/bgp_evpn_private.h"
31 #include "bgpd/bgp_evpn_mh.h"
32 #include "bgpd/bgp_ecommunity.h"
33 #include "bgpd/bgp_encap_types.h"
34 #include "bgpd/bgp_debug.h"
35 #include "bgpd/bgp_errors.h"
36 #include "bgpd/bgp_aspath.h"
37 #include "bgpd/bgp_zebra.h"
38 #include "bgpd/bgp_addpath.h"
39 #include "bgpd/bgp_label.h"
40 #include "bgpd/bgp_nht.h"
41 #include "bgpd/bgp_mpath.h"
42 #include "bgpd/bgp_trace.h"
44 static void bgp_evpn_local_es_down(struct bgp
*bgp
,
45 struct bgp_evpn_es
*es
);
46 static void bgp_evpn_local_type1_evi_route_del(struct bgp
*bgp
,
47 struct bgp_evpn_es
*es
);
48 static struct bgp_evpn_es_vtep
*bgp_evpn_es_vtep_add(struct bgp
*bgp
,
49 struct bgp_evpn_es
*es
,
50 struct in_addr vtep_ip
,
51 bool esr
, uint8_t df_alg
,
53 static void bgp_evpn_es_vtep_del(struct bgp
*bgp
,
54 struct bgp_evpn_es
*es
, struct in_addr vtep_ip
, bool esr
);
55 static void bgp_evpn_es_cons_checks_pend_add(struct bgp_evpn_es
*es
);
56 static void bgp_evpn_es_cons_checks_pend_del(struct bgp_evpn_es
*es
);
57 static struct bgp_evpn_es_evi
*
58 bgp_evpn_local_es_evi_do_del(struct bgp_evpn_es_evi
*es_evi
);
59 static uint32_t bgp_evpn_es_get_active_vtep_cnt(struct bgp_evpn_es
*es
);
60 static void bgp_evpn_l3nhg_update_on_vtep_chg(struct bgp_evpn_es
*es
);
61 static struct bgp_evpn_es
*bgp_evpn_es_new(struct bgp
*bgp
, const esi_t
*esi
);
62 static void bgp_evpn_es_free(struct bgp_evpn_es
*es
, const char *caller
);
63 static void bgp_evpn_path_es_unlink(struct bgp_path_es_info
*es_info
);
64 static void bgp_evpn_mac_update_on_es_local_chg(struct bgp_evpn_es
*es
,
67 esi_t zero_esi_buf
, *zero_esi
= &zero_esi_buf
;
68 static void bgp_evpn_run_consistency_checks(struct thread
*t
);
69 static void bgp_evpn_path_nh_info_free(struct bgp_path_evpn_nh_info
*nh_info
);
70 static void bgp_evpn_path_nh_unlink(struct bgp_path_evpn_nh_info
*nh_info
);
72 /******************************************************************************
73 * per-ES (Ethernet Segment) routing table
75 * Following routes are added to the ES's routing table -
76 * 1. Local and remote ESR (Type-4)
77 * 2. Local EAD-per-ES (Type-1).
79 * Key for these routes is {ESI, VTEP-IP} so the path selection is practically
80 * a no-op i.e. all paths lead to same VTEP-IP (i.e. result in the same VTEP
81 * being added to same ES).
83 * Note the following routes go into the VNI routing table (instead of the
85 * 1. Remote EAD-per-ES
86 * 2. Local and remote EAD-per-EVI
89 /* Calculate the best path for a multi-homing (Type-1 or Type-4) route
90 * installed in the ES's routing table.
92 static int bgp_evpn_es_route_select_install(struct bgp
*bgp
,
93 struct bgp_evpn_es
*es
,
94 struct bgp_dest
*dest
)
97 afi_t afi
= AFI_L2VPN
;
98 safi_t safi
= SAFI_EVPN
;
99 struct bgp_path_info
*old_select
; /* old best */
100 struct bgp_path_info
*new_select
; /* new best */
101 struct bgp_path_info_pair old_and_new
;
103 /* Compute the best path. */
104 bgp_best_selection(bgp
, dest
, &bgp
->maxpaths
[afi
][safi
], &old_and_new
,
106 old_select
= old_and_new
.old
;
107 new_select
= old_and_new
.new;
110 * If the best path hasn't changed - see if something needs to be
113 if (old_select
&& old_select
== new_select
114 && old_select
->type
== ZEBRA_ROUTE_BGP
115 && old_select
->sub_type
== BGP_ROUTE_IMPORTED
116 && !CHECK_FLAG(dest
->flags
, BGP_NODE_USER_CLEAR
)
117 && !CHECK_FLAG(old_select
->flags
, BGP_PATH_ATTR_CHANGED
)
118 && !bgp_addpath_is_addpath_used(&bgp
->tx_addpath
, afi
, safi
)) {
119 if (bgp_zebra_has_route_changed(old_select
)) {
120 bgp_evpn_es_vtep_add(bgp
, es
, old_select
->attr
->nexthop
,
122 old_select
->attr
->df_alg
,
123 old_select
->attr
->df_pref
);
125 UNSET_FLAG(old_select
->flags
, BGP_PATH_MULTIPATH_CHG
);
126 bgp_zebra_clear_route_change_flags(dest
);
130 /* If the user did a "clear" this flag will be set */
131 UNSET_FLAG(dest
->flags
, BGP_NODE_USER_CLEAR
);
133 /* bestpath has changed; update relevant fields and install or uninstall
134 * into the zebra RIB.
136 if (old_select
|| new_select
)
137 bgp_bump_version(dest
);
140 bgp_path_info_unset_flag(dest
, old_select
, BGP_PATH_SELECTED
);
142 bgp_path_info_set_flag(dest
, new_select
, BGP_PATH_SELECTED
);
143 bgp_path_info_unset_flag(dest
, new_select
,
144 BGP_PATH_ATTR_CHANGED
);
145 UNSET_FLAG(new_select
->flags
, BGP_PATH_MULTIPATH_CHG
);
148 if (new_select
&& new_select
->type
== ZEBRA_ROUTE_BGP
149 && new_select
->sub_type
== BGP_ROUTE_IMPORTED
) {
150 bgp_evpn_es_vtep_add(bgp
, es
, new_select
->attr
->nexthop
,
151 true /*esr */, new_select
->attr
->df_alg
,
152 new_select
->attr
->df_pref
);
154 if (old_select
&& old_select
->type
== ZEBRA_ROUTE_BGP
155 && old_select
->sub_type
== BGP_ROUTE_IMPORTED
)
156 bgp_evpn_es_vtep_del(
157 bgp
, es
, old_select
->attr
->nexthop
,
161 /* Clear any route change flags. */
162 bgp_zebra_clear_route_change_flags(dest
);
164 /* Reap old select bgp_path_info, if it has been removed */
165 if (old_select
&& CHECK_FLAG(old_select
->flags
, BGP_PATH_REMOVED
))
166 bgp_path_info_reap(dest
, old_select
);
171 /* Install Type-1/Type-4 route entry in the per-ES routing table */
172 static int bgp_evpn_es_route_install(struct bgp
*bgp
,
173 struct bgp_evpn_es
*es
, struct prefix_evpn
*p
,
174 struct bgp_path_info
*parent_pi
)
177 struct bgp_dest
*dest
= NULL
;
178 struct bgp_path_info
*pi
= NULL
;
179 struct attr
*attr_new
= NULL
;
181 /* Create (or fetch) route within the VNI.
182 * NOTE: There is no RD here.
184 dest
= bgp_node_get(es
->route_table
, (struct prefix
*)p
);
186 /* Check if route entry is already present. */
187 for (pi
= bgp_dest_get_bgp_path_info(dest
); pi
; pi
= pi
->next
)
189 (struct bgp_path_info
*)pi
->extra
->parent
== parent_pi
)
193 /* Add (or update) attribute to hash. */
194 attr_new
= bgp_attr_intern(parent_pi
->attr
);
196 /* Create new route with its attribute. */
197 pi
= info_make(parent_pi
->type
, BGP_ROUTE_IMPORTED
, 0,
198 parent_pi
->peer
, attr_new
, dest
);
199 SET_FLAG(pi
->flags
, BGP_PATH_VALID
);
200 bgp_path_info_extra_get(pi
);
201 pi
->extra
->parent
= bgp_path_info_lock(parent_pi
);
202 bgp_dest_lock_node((struct bgp_dest
*)parent_pi
->net
);
203 bgp_path_info_add(dest
, pi
);
205 if (attrhash_cmp(pi
->attr
, parent_pi
->attr
)
206 && !CHECK_FLAG(pi
->flags
, BGP_PATH_REMOVED
)) {
207 bgp_dest_unlock_node(dest
);
210 /* The attribute has changed. */
211 /* Add (or update) attribute to hash. */
212 attr_new
= bgp_attr_intern(parent_pi
->attr
);
214 /* Restore route, if needed. */
215 if (CHECK_FLAG(pi
->flags
, BGP_PATH_REMOVED
))
216 bgp_path_info_restore(dest
, pi
);
218 /* Mark if nexthop has changed. */
219 if (!IPV4_ADDR_SAME(&pi
->attr
->nexthop
, &attr_new
->nexthop
))
220 SET_FLAG(pi
->flags
, BGP_PATH_IGP_CHANGED
);
222 /* Unintern existing, set to new. */
223 bgp_attr_unintern(&pi
->attr
);
225 pi
->uptime
= monotime(NULL
);
228 /* Perform route selection and update zebra, if required. */
229 ret
= bgp_evpn_es_route_select_install(bgp
, es
, dest
);
231 bgp_dest_unlock_node(dest
);
236 /* Uninstall Type-1/Type-4 route entry from the ES routing table */
237 static int bgp_evpn_es_route_uninstall(struct bgp
*bgp
, struct bgp_evpn_es
*es
,
238 struct prefix_evpn
*p
, struct bgp_path_info
*parent_pi
)
241 struct bgp_dest
*dest
;
242 struct bgp_path_info
*pi
;
244 if (!es
->route_table
)
247 /* Locate route within the ESI.
248 * NOTE: There is no RD here.
250 dest
= bgp_node_lookup(es
->route_table
, (struct prefix
*)p
);
254 /* Find matching route entry. */
255 for (pi
= bgp_dest_get_bgp_path_info(dest
); pi
; pi
= pi
->next
)
257 && (struct bgp_path_info
*)pi
->extra
->parent
==
262 bgp_dest_unlock_node(dest
);
266 /* Mark entry for deletion */
267 bgp_path_info_delete(dest
, pi
);
269 /* Perform route selection and update zebra, if required. */
270 ret
= bgp_evpn_es_route_select_install(bgp
, es
, dest
);
272 /* Unlock route node. */
273 bgp_dest_unlock_node(dest
);
278 /* Install or unistall a Type-4 route in the per-ES routing table */
279 int bgp_evpn_es_route_install_uninstall(struct bgp
*bgp
, struct bgp_evpn_es
*es
,
280 afi_t afi
, safi_t safi
, struct prefix_evpn
*evp
,
281 struct bgp_path_info
*pi
, int install
)
286 ret
= bgp_evpn_es_route_install(bgp
, es
, evp
, pi
);
288 ret
= bgp_evpn_es_route_uninstall(bgp
, es
, evp
, pi
);
293 "%u: Failed to %s EVPN %s route in ESI %s",
295 install
? "install" : "uninstall",
302 /* Delete (and withdraw) local routes for specified ES from global and ES table.
303 * Also remove all remote routes from the per ES table. Invoked when ES
306 static void bgp_evpn_es_route_del_all(struct bgp
*bgp
, struct bgp_evpn_es
*es
)
308 struct bgp_dest
*dest
;
309 struct bgp_path_info
*pi
, *nextpi
;
311 /* de-activate the ES */
312 bgp_evpn_local_es_down(bgp
, es
);
313 bgp_evpn_local_type1_evi_route_del(bgp
, es
);
315 /* Walk this ES's routing table and delete all routes. */
316 for (dest
= bgp_table_top(es
->route_table
); dest
;
317 dest
= bgp_route_next(dest
)) {
318 for (pi
= bgp_dest_get_bgp_path_info(dest
);
319 (pi
!= NULL
) && (nextpi
= pi
->next
, 1); pi
= nextpi
) {
320 bgp_path_info_delete(dest
, pi
);
321 bgp_path_info_reap(dest
, pi
);
326 /*****************************************************************************
327 * Base APIs for creating MH routes (Type-1 or Type-4) on local ethernet
331 /* create or update local EVPN type1/type4 route entry.
334 * the ES table if ESR/EAD-ES (or)
335 * the VNI table if EAD-EVI (or)
336 * the global table if ESR/EAD-ES/EAD-EVI
338 * Note: vpn is applicable only to EAD-EVI routes (NULL for EAD-ES and
341 int bgp_evpn_mh_route_update(struct bgp
*bgp
, struct bgp_evpn_es
*es
,
342 struct bgpevpn
*vpn
, afi_t afi
, safi_t safi
,
343 struct bgp_dest
*dest
, struct attr
*attr
,
344 struct bgp_path_info
**ri
, int *route_changed
)
346 struct bgp_path_info
*tmp_pi
= NULL
;
347 struct bgp_path_info
*local_pi
= NULL
; /* local route entry if any */
348 struct bgp_path_info
*remote_pi
= NULL
; /* remote route entry if any */
349 struct attr
*attr_new
= NULL
;
350 struct prefix_evpn
*evp
;
353 evp
= (struct prefix_evpn
*)bgp_dest_get_prefix(dest
);
356 /* locate the local and remote entries if any */
357 for (tmp_pi
= bgp_dest_get_bgp_path_info(dest
); tmp_pi
;
358 tmp_pi
= tmp_pi
->next
) {
359 if (tmp_pi
->peer
== bgp
->peer_self
360 && tmp_pi
->type
== ZEBRA_ROUTE_BGP
361 && tmp_pi
->sub_type
== BGP_ROUTE_STATIC
)
363 if (tmp_pi
->type
== ZEBRA_ROUTE_BGP
364 && tmp_pi
->sub_type
== BGP_ROUTE_IMPORTED
365 && CHECK_FLAG(tmp_pi
->flags
, BGP_PATH_VALID
))
369 /* we don't expect to see a remote_pi at this point as
370 * an ES route has {esi, vtep_ip} as the key in the ES-rt-table
371 * in the VNI-rt-table.
376 "%u ERROR: local es route for ESI: %s vtep %pI4 also learnt from remote",
377 bgp
->vrf_id
, es
? es
->esi_str
: "Null",
378 es
? &es
->originator_ip
: NULL
);
382 /* create or update the entry */
385 /* Add or update attribute to hash */
386 attr_new
= bgp_attr_intern(attr
);
388 /* Create new route with its attribute. */
389 tmp_pi
= info_make(ZEBRA_ROUTE_BGP
, BGP_ROUTE_STATIC
, 0,
390 bgp
->peer_self
, attr_new
, dest
);
391 SET_FLAG(tmp_pi
->flags
, BGP_PATH_VALID
);
393 if (evp
->prefix
.route_type
== BGP_EVPN_AD_ROUTE
) {
394 bgp_path_info_extra_get(tmp_pi
);
395 tmp_pi
->extra
->num_labels
= 1;
397 vni2label(vpn
->vni
, &tmp_pi
->extra
->label
[0]);
399 tmp_pi
->extra
->label
[0] = 0;
402 /* add the newly created path to the route-node */
403 bgp_path_info_add(dest
, tmp_pi
);
406 if (attrhash_cmp(tmp_pi
->attr
, attr
)
407 && !CHECK_FLAG(tmp_pi
->flags
, BGP_PATH_REMOVED
))
410 /* The attribute has changed.
411 * Add (or update) attribute to hash.
413 attr_new
= bgp_attr_intern(attr
);
414 bgp_path_info_set_flag(dest
, tmp_pi
,
415 BGP_PATH_ATTR_CHANGED
);
417 /* Restore route, if needed. */
418 if (CHECK_FLAG(tmp_pi
->flags
, BGP_PATH_REMOVED
))
419 bgp_path_info_restore(dest
, tmp_pi
);
421 /* Unintern existing, set to new. */
422 bgp_attr_unintern(&tmp_pi
->attr
);
423 tmp_pi
->attr
= attr_new
;
424 tmp_pi
->uptime
= monotime(NULL
);
428 if (*route_changed
) {
429 if (BGP_DEBUG(evpn_mh
, EVPN_MH_RT
))
431 "local ES %s vni %u route-type %s nexthop %pI4 updated",
432 es
? es
->esi_str
: "Null", vpn
? vpn
->vni
: 0,
433 evp
->prefix
.route_type
== BGP_EVPN_ES_ROUTE
435 : (vpn
? "ead-evi" : "ead-es"),
436 &attr
->mp_nexthop_global_in
);
439 /* Return back the route entry. */
444 /* Delete local EVPN ESR (type-4) and EAD (type-1) route
446 * Note: vpn is applicable only to EAD-EVI routes (NULL for EAD-ES and
449 static int bgp_evpn_mh_route_delete(struct bgp
*bgp
, struct bgp_evpn_es
*es
,
451 struct bgp_evpn_es_frag
*es_frag
,
452 struct prefix_evpn
*p
)
454 afi_t afi
= AFI_L2VPN
;
455 safi_t safi
= SAFI_EVPN
;
456 struct bgp_path_info
*pi
;
457 struct bgp_dest
*dest
= NULL
; /* dest in esi table */
458 struct bgp_dest
*global_dest
= NULL
; /* dest in global table */
459 struct bgp_table
*rt_table
;
460 struct prefix_rd
*prd
;
463 rt_table
= vpn
->ip_table
;
466 rt_table
= es
->route_table
;
470 /* First, locate the route node within the ESI or VNI.
471 * If it doesn't exist, ther is nothing to do.
472 * Note: there is no RD here.
474 dest
= bgp_node_lookup(rt_table
, (struct prefix
*)p
);
478 if (BGP_DEBUG(evpn_mh
, EVPN_MH_RT
))
480 "local ES %s vni %u route-type %s nexthop %pI4 delete",
481 es
->esi_str
, vpn
? vpn
->vni
: 0,
482 p
->prefix
.route_type
== BGP_EVPN_ES_ROUTE
484 : (vpn
? "ead-evi" : "ead-es"),
487 /* Next, locate route node in the global EVPN routing table.
488 * Note that this table is a 2-level tree (RD-level + Prefix-level)
490 global_dest
= bgp_evpn_global_node_lookup(bgp
->rib
[afi
][safi
], afi
,
494 /* Delete route entry in the global EVPN table. */
495 delete_evpn_route_entry(bgp
, afi
, safi
, global_dest
, &pi
);
497 /* Schedule for processing - withdraws to peers happen from
501 bgp_process(bgp
, global_dest
, afi
, safi
);
502 bgp_dest_unlock_node(global_dest
);
506 * Delete route entry in the ESI or VNI routing table.
507 * This can just be removed.
509 delete_evpn_route_entry(bgp
, afi
, safi
, dest
, &pi
);
511 bgp_path_info_reap(dest
, pi
);
512 bgp_dest_unlock_node(dest
);
517 * This function is called when the VNI RD changes.
518 * Delete all EAD/EVI local routes for this VNI from the global routing table.
519 * These routes are scheduled for withdraw from peers.
521 int delete_global_ead_evi_routes(struct bgp
*bgp
, struct bgpevpn
*vpn
)
525 struct bgp_dest
*rdrn
, *rn
;
526 struct bgp_table
*table
;
527 struct bgp_path_info
*pi
;
532 /* Find the RD node for the VNI in the global table */
533 rdrn
= bgp_node_lookup(bgp
->rib
[afi
][safi
], (struct prefix
*)&vpn
->prd
);
534 if (rdrn
&& bgp_dest_has_bgp_path_info_data(rdrn
)) {
535 table
= bgp_dest_get_bgp_table_info(rdrn
);
538 * Iterate over all the routes in this table and delete EAD/EVI
541 for (rn
= bgp_table_top(table
); rn
; rn
= bgp_route_next(rn
)) {
542 struct prefix_evpn
*evp
= (struct prefix_evpn
*)&rn
->p
;
544 if (evp
->prefix
.route_type
!= BGP_EVPN_AD_ROUTE
)
547 delete_evpn_route_entry(bgp
, afi
, safi
, rn
, &pi
);
549 bgp_process(bgp
, rn
, afi
, safi
);
553 /* Unlock RD node. */
555 bgp_dest_unlock_node(rdrn
);
560 /*****************************************************************************
561 * Ethernet Segment (Type-4) Routes
562 * ESRs are used for DF election. Currently service-carving described in
563 * RFC 7432 is NOT supported. Instead preference based DF election is
565 * Reference: draft-ietf-bess-evpn-pref-df
567 /* Build extended community for EVPN ES (type-4) route */
568 static void bgp_evpn_type4_route_extcomm_build(struct bgp_evpn_es
*es
,
571 struct ecommunity ecom_encap
;
572 struct ecommunity ecom_es_rt
;
573 struct ecommunity ecom_df
;
574 struct ecommunity_val eval
;
575 struct ecommunity_val eval_es_rt
;
576 struct ecommunity_val eval_df
;
577 bgp_encap_types tnl_type
;
581 tnl_type
= BGP_ENCAP_TYPE_VXLAN
;
582 memset(&ecom_encap
, 0, sizeof(ecom_encap
));
583 encode_encap_extcomm(tnl_type
, &eval
);
585 ecom_encap
.unit_size
= ECOMMUNITY_SIZE
;
586 ecom_encap
.val
= (uint8_t *)eval
.val
;
587 bgp_attr_set_ecommunity(attr
, ecommunity_dup(&ecom_encap
));
590 memset(&mac
, 0, sizeof(mac
));
591 memset(&ecom_es_rt
, 0, sizeof(ecom_es_rt
));
592 es_get_system_mac(&es
->esi
, &mac
);
593 encode_es_rt_extcomm(&eval_es_rt
, &mac
);
595 ecom_es_rt
.unit_size
= ECOMMUNITY_SIZE
;
596 ecom_es_rt
.val
= (uint8_t *)eval_es_rt
.val
;
597 bgp_attr_set_ecommunity(
599 ecommunity_merge(bgp_attr_get_ecommunity(attr
), &ecom_es_rt
));
601 /* DF election extended community */
602 memset(&ecom_df
, 0, sizeof(ecom_df
));
603 encode_df_elect_extcomm(&eval_df
, es
->df_pref
);
605 ecom_df
.val
= (uint8_t *)eval_df
.val
;
606 bgp_attr_set_ecommunity(
608 ecommunity_merge(bgp_attr_get_ecommunity(attr
), &ecom_df
));
611 /* Create or update local type-4 route */
612 static int bgp_evpn_type4_route_update(struct bgp
*bgp
,
613 struct bgp_evpn_es
*es
, struct prefix_evpn
*p
)
616 int route_changed
= 0;
617 afi_t afi
= AFI_L2VPN
;
618 safi_t safi
= SAFI_EVPN
;
620 struct attr
*attr_new
= NULL
;
621 struct bgp_dest
*dest
= NULL
;
622 struct bgp_path_info
*pi
= NULL
;
624 memset(&attr
, 0, sizeof(attr
));
626 /* Build path-attribute for this route. */
627 bgp_attr_default_set(&attr
, bgp
, BGP_ORIGIN_IGP
);
628 attr
.nexthop
= es
->originator_ip
;
629 attr
.mp_nexthop_global_in
= es
->originator_ip
;
630 attr
.mp_nexthop_len
= BGP_ATTR_NHLEN_IPV4
;
632 /* Set up extended community. */
633 bgp_evpn_type4_route_extcomm_build(es
, &attr
);
635 /* First, create (or fetch) route node within the ESI. */
636 /* NOTE: There is no RD here. */
637 dest
= bgp_node_get(es
->route_table
, (struct prefix
*)p
);
639 /* Create or update route entry. */
640 ret
= bgp_evpn_mh_route_update(bgp
, es
, NULL
, afi
, safi
, dest
, &attr
,
641 &pi
, &route_changed
);
645 "%u ERROR: Failed to updated ES route ESI: %s VTEP %pI4",
646 bgp
->vrf_id
, es
->esi_str
, &es
->originator_ip
);
651 /* Perform route selection;
652 * this is just to set the flags correctly
653 * as local route in the ES always wins.
655 bgp_evpn_es_route_select_install(bgp
, es
, dest
);
656 bgp_dest_unlock_node(dest
);
658 /* If this is a new route or some attribute has changed, export the
659 * route to the global table. The route will be advertised to peers
660 * from there. Note that this table is a 2-level tree (RD-level +
661 * Prefix-level) similar to L3VPN routes.
664 struct bgp_path_info
*global_pi
;
666 dest
= bgp_evpn_global_node_get(bgp
->rib
[afi
][safi
], afi
, safi
,
667 p
, &es
->es_base_frag
->prd
,
669 bgp_evpn_mh_route_update(bgp
, es
, NULL
, afi
, safi
, dest
,
670 attr_new
, &global_pi
, &route_changed
);
672 /* Schedule for processing and unlock node. */
673 bgp_process(bgp
, dest
, afi
, safi
);
674 bgp_dest_unlock_node(dest
);
677 /* Unintern temporary. */
678 aspath_unintern(&attr
.aspath
);
682 /* Delete local type-4 route */
683 static int bgp_evpn_type4_route_delete(struct bgp
*bgp
,
684 struct bgp_evpn_es
*es
, struct prefix_evpn
*p
)
686 if (!es
->es_base_frag
)
689 return bgp_evpn_mh_route_delete(bgp
, es
, NULL
/* l2vni */,
690 es
->es_base_frag
, p
);
693 /* Process remote/received EVPN type-4 route (advertise or withdraw) */
694 int bgp_evpn_type4_route_process(struct peer
*peer
, afi_t afi
, safi_t safi
,
695 struct attr
*attr
, uint8_t *pfx
, int psize
,
700 struct in_addr vtep_ip
;
701 struct prefix_rd prd
;
702 struct prefix_evpn p
;
704 /* Type-4 route should be either 23 or 35 bytes
705 * RD (8), ESI (10), ip-len (1), ip (4 or 16)
707 if (psize
!= BGP_EVPN_TYPE4_V4_PSIZE
&&
708 psize
!= BGP_EVPN_TYPE4_V6_PSIZE
) {
709 flog_err(EC_BGP_EVPN_ROUTE_INVALID
,
710 "%u:%s - Rx EVPN Type-4 NLRI with invalid length %d",
711 peer
->bgp
->vrf_id
, peer
->host
, psize
);
716 prd
.family
= AF_UNSPEC
;
718 memcpy(&prd
.val
, pfx
, RD_BYTES
);
722 memcpy(&esi
, pfx
, ESI_BYTES
);
728 if (ipaddr_len
== IPV4_MAX_BITLEN
) {
729 memcpy(&vtep_ip
, pfx
, IPV4_MAX_BYTELEN
);
732 EC_BGP_EVPN_ROUTE_INVALID
,
733 "%u:%s - Rx EVPN Type-4 NLRI with unsupported IP address length %d",
734 peer
->bgp
->vrf_id
, peer
->host
, ipaddr_len
);
738 build_evpn_type4_prefix(&p
, &esi
, vtep_ip
);
739 /* Process the route. */
741 bgp_update(peer
, (struct prefix
*)&p
, addpath_id
, attr
, afi
,
742 safi
, ZEBRA_ROUTE_BGP
, BGP_ROUTE_NORMAL
, &prd
, NULL
,
745 bgp_withdraw(peer
, (struct prefix
*)&p
, addpath_id
, attr
, afi
,
746 safi
, ZEBRA_ROUTE_BGP
, BGP_ROUTE_NORMAL
, &prd
,
752 /* Check if a prefix belongs to the local ES */
753 static bool bgp_evpn_type4_prefix_match(struct prefix_evpn
*p
,
754 struct bgp_evpn_es
*es
)
756 return (p
->prefix
.route_type
== BGP_EVPN_ES_ROUTE
) &&
757 !memcmp(&p
->prefix
.es_addr
.esi
, &es
->esi
, sizeof(esi_t
));
760 /* Import remote ESRs on local ethernet segment add */
761 static int bgp_evpn_type4_remote_routes_import(struct bgp
*bgp
,
762 struct bgp_evpn_es
*es
, bool install
)
767 struct bgp_dest
*rd_dest
, *dest
;
768 struct bgp_table
*table
;
769 struct bgp_path_info
*pi
;
774 /* Walk entire global routing table and evaluate routes which could be
775 * imported into this Ethernet Segment.
777 for (rd_dest
= bgp_table_top(bgp
->rib
[afi
][safi
]); rd_dest
;
778 rd_dest
= bgp_route_next(rd_dest
)) {
779 table
= bgp_dest_get_bgp_table_info(rd_dest
);
783 for (dest
= bgp_table_top(table
); dest
;
784 dest
= bgp_route_next(dest
)) {
785 struct prefix_evpn
*evp
=
786 (struct prefix_evpn
*)bgp_dest_get_prefix(dest
);
788 for (pi
= bgp_dest_get_bgp_path_info(dest
); pi
;
791 * Consider "valid" remote routes applicable for
794 if (!(CHECK_FLAG(pi
->flags
, BGP_PATH_VALID
)
795 && pi
->type
== ZEBRA_ROUTE_BGP
796 && pi
->sub_type
== BGP_ROUTE_NORMAL
))
799 if (!bgp_evpn_type4_prefix_match(evp
, es
))
803 ret
= bgp_evpn_es_route_install(
806 ret
= bgp_evpn_es_route_uninstall(
812 "Failed to %s EVPN %pFX route in ESI %s",
817 bgp_dest_unlock_node(rd_dest
);
818 bgp_dest_unlock_node(dest
);
827 /*****************************************************************************
828 * Ethernet Auto Discovery (EAD/Type-1) route handling
829 * There are two types of EAD routes -
830 * 1. EAD-per-ES - Key: {ESI, ET=0xffffffff}
831 * 2. EAD-per-EVI - Key: {ESI, ET=0}
834 /* Extended communities associated with EAD-per-ES */
836 bgp_evpn_type1_es_route_extcomm_build(struct bgp_evpn_es_frag
*es_frag
,
839 struct ecommunity ecom_encap
;
840 struct ecommunity ecom_esi_label
;
841 struct ecommunity_val eval
;
842 struct ecommunity_val eval_esi_label
;
843 bgp_encap_types tnl_type
;
844 struct listnode
*evi_node
, *rt_node
;
845 struct ecommunity
*ecom
;
846 struct bgp_evpn_es_evi
*es_evi
;
849 tnl_type
= BGP_ENCAP_TYPE_VXLAN
;
850 memset(&ecom_encap
, 0, sizeof(ecom_encap
));
851 encode_encap_extcomm(tnl_type
, &eval
);
853 ecom_encap
.unit_size
= ECOMMUNITY_SIZE
;
854 ecom_encap
.val
= (uint8_t *)eval
.val
;
855 bgp_attr_set_ecommunity(attr
, ecommunity_dup(&ecom_encap
));
858 encode_esi_label_extcomm(&eval_esi_label
,
859 false /*single_active*/);
860 ecom_esi_label
.size
= 1;
861 ecom_esi_label
.unit_size
= ECOMMUNITY_SIZE
;
862 ecom_esi_label
.val
= (uint8_t *)eval_esi_label
.val
;
863 bgp_attr_set_ecommunity(attr
,
864 ecommunity_merge(bgp_attr_get_ecommunity(attr
),
867 /* Add export RTs for all L2-VNIs associated with this ES */
868 /* XXX - suppress EAD-ES advertisment if there are no EVIs associated
871 if (listcount(bgp_mh_info
->ead_es_export_rtl
)) {
872 for (ALL_LIST_ELEMENTS_RO(bgp_mh_info
->ead_es_export_rtl
,
874 bgp_attr_set_ecommunity(
875 attr
, ecommunity_merge(attr
->ecommunity
, ecom
));
877 for (ALL_LIST_ELEMENTS_RO(es_frag
->es_evi_frag_list
, evi_node
,
879 if (!CHECK_FLAG(es_evi
->flags
, BGP_EVPNES_EVI_LOCAL
))
881 for (ALL_LIST_ELEMENTS_RO(es_evi
->vpn
->export_rtl
,
883 bgp_attr_set_ecommunity(
884 attr
, ecommunity_merge(attr
->ecommunity
,
890 /* Extended communities associated with EAD-per-EVI */
891 static void bgp_evpn_type1_evi_route_extcomm_build(struct bgp_evpn_es
*es
,
892 struct bgpevpn
*vpn
, struct attr
*attr
)
894 struct ecommunity ecom_encap
;
895 struct ecommunity_val eval
;
896 bgp_encap_types tnl_type
;
897 struct listnode
*rt_node
;
898 struct ecommunity
*ecom
;
901 tnl_type
= BGP_ENCAP_TYPE_VXLAN
;
902 memset(&ecom_encap
, 0, sizeof(ecom_encap
));
903 encode_encap_extcomm(tnl_type
, &eval
);
905 ecom_encap
.unit_size
= ECOMMUNITY_SIZE
;
906 ecom_encap
.val
= (uint8_t *)eval
.val
;
907 bgp_attr_set_ecommunity(attr
, ecommunity_dup(&ecom_encap
));
909 /* Add export RTs for the L2-VNI */
910 for (ALL_LIST_ELEMENTS_RO(vpn
->export_rtl
, rt_node
, ecom
))
911 bgp_attr_set_ecommunity(
913 ecommunity_merge(bgp_attr_get_ecommunity(attr
), ecom
));
916 /* Update EVPN EAD (type-1) route -
917 * vpn - valid for EAD-EVI routes and NULL for EAD-ES routes
919 static int bgp_evpn_type1_route_update(struct bgp
*bgp
, struct bgp_evpn_es
*es
,
921 struct bgp_evpn_es_frag
*es_frag
,
922 struct prefix_evpn
*p
)
925 afi_t afi
= AFI_L2VPN
;
926 safi_t safi
= SAFI_EVPN
;
928 struct attr
*attr_new
= NULL
;
929 struct bgp_dest
*dest
= NULL
;
930 struct bgp_path_info
*pi
= NULL
;
931 int route_changed
= 0;
932 struct prefix_rd
*global_rd
;
934 memset(&attr
, 0, sizeof(attr
));
936 /* Build path-attribute for this route. */
937 bgp_attr_default_set(&attr
, bgp
, BGP_ORIGIN_IGP
);
938 attr
.nexthop
= es
->originator_ip
;
939 attr
.mp_nexthop_global_in
= es
->originator_ip
;
940 attr
.mp_nexthop_len
= BGP_ATTR_NHLEN_IPV4
;
943 /* EAD-EVI route update */
945 vni2label(vpn
->vni
, &(attr
.label
));
947 /* Set up extended community */
948 bgp_evpn_type1_evi_route_extcomm_build(es
, vpn
, &attr
);
950 /* First, create (or fetch) route node within the VNI. */
951 dest
= bgp_node_get(vpn
->ip_table
, (struct prefix
*)p
);
953 /* Create or update route entry. */
954 ret
= bgp_evpn_mh_route_update(bgp
, es
, vpn
, afi
, safi
, dest
,
955 &attr
, &pi
, &route_changed
);
959 "%u Failed to update EAD-EVI route ESI: %s VNI %u VTEP %pI4",
960 bgp
->vrf_id
, es
->esi_str
, vpn
->vni
,
962 global_rd
= &vpn
->prd
;
964 /* EAD-ES route update */
965 /* MPLS label is 0 for EAD-ES route */
967 /* Set up extended community */
968 bgp_evpn_type1_es_route_extcomm_build(es_frag
, &attr
);
970 /* First, create (or fetch) route node within the ES. */
971 /* NOTE: There is no RD here. */
972 /* XXX: fragment ID must be included as a part of the prefix. */
973 dest
= bgp_node_get(es
->route_table
, (struct prefix
*)p
);
975 /* Create or update route entry. */
976 ret
= bgp_evpn_mh_route_update(bgp
, es
, vpn
, afi
, safi
, dest
,
977 &attr
, &pi
, &route_changed
);
981 "%u ERROR: Failed to updated EAD-ES route ESI: %s VTEP %pI4",
982 bgp
->vrf_id
, es
->esi_str
, &es
->originator_ip
);
984 global_rd
= &es_frag
->prd
;
991 /* Perform route selection;
992 * this is just to set the flags correctly as local route in
993 * the ES always wins.
995 evpn_route_select_install(bgp
, vpn
, dest
);
996 bgp_dest_unlock_node(dest
);
998 /* If this is a new route or some attribute has changed, export the
999 * route to the global table. The route will be advertised to peers
1000 * from there. Note that this table is a 2-level tree (RD-level +
1001 * Prefix-level) similar to L3VPN routes.
1003 if (route_changed
) {
1004 struct bgp_path_info
*global_pi
;
1006 dest
= bgp_evpn_global_node_get(bgp
->rib
[afi
][safi
], afi
, safi
,
1007 p
, global_rd
, NULL
);
1008 bgp_evpn_mh_route_update(bgp
, es
, vpn
, afi
, safi
, dest
,
1009 attr_new
, &global_pi
, &route_changed
);
1011 /* Schedule for processing and unlock node. */
1012 bgp_process(bgp
, dest
, afi
, safi
);
1013 bgp_dest_unlock_node(dest
);
1016 /* Unintern temporary. */
1017 aspath_unintern(&attr
.aspath
);
1022 * This function is called when the export RT for a VNI changes.
1023 * Update all type-1 local routes for this VNI from VNI/ES tables and the global
1024 * table and advertise these routes to peers.
1027 static void bgp_evpn_ead_es_route_update(struct bgp
*bgp
,
1028 struct bgp_evpn_es
*es
)
1030 struct listnode
*node
;
1031 struct bgp_evpn_es_frag
*es_frag
;
1032 struct prefix_evpn p
;
1034 build_evpn_type1_prefix(&p
, BGP_EVPN_AD_ES_ETH_TAG
, &es
->esi
,
1036 for (ALL_LIST_ELEMENTS_RO(es
->es_frag_list
, node
, es_frag
)) {
1037 if (!listcount(es_frag
->es_evi_frag_list
))
1040 p
.prefix
.ead_addr
.frag_id
= es_frag
->rd_id
;
1041 if (bgp_evpn_type1_route_update(bgp
, es
, NULL
, es_frag
, &p
))
1043 EC_BGP_EVPN_ROUTE_CREATE
,
1044 "EAD-ES route creation failure for ESI %s frag %u",
1045 es
->esi_str
, es_frag
->rd_id
);
1049 static void bgp_evpn_ead_evi_route_update(struct bgp
*bgp
,
1050 struct bgp_evpn_es
*es
,
1051 struct bgpevpn
*vpn
,
1052 struct prefix_evpn
*p
)
1054 if (bgp_evpn_type1_route_update(bgp
, es
, vpn
, NULL
, p
))
1055 flog_err(EC_BGP_EVPN_ROUTE_CREATE
,
1056 "EAD-EVI route creation failure for ESI %s VNI %u",
1057 es
->esi_str
, vpn
->vni
);
1060 void update_type1_routes_for_evi(struct bgp
*bgp
, struct bgpevpn
*vpn
)
1062 struct prefix_evpn p
;
1063 struct bgp_evpn_es
*es
;
1064 struct bgp_evpn_es_evi
*es_evi
;
1067 RB_FOREACH (es_evi
, bgp_es_evi_rb_head
, &vpn
->es_evi_rb_tree
) {
1070 if (es_evi
->vpn
!= vpn
)
1074 bgp_evpn_ead_es_route_update(bgp
, es
);
1076 /* Update EAD-EVI */
1077 if (CHECK_FLAG(es
->flags
, BGP_EVPNES_ADV_EVI
)) {
1078 build_evpn_type1_prefix(&p
, BGP_EVPN_AD_EVI_ETH_TAG
,
1079 &es
->esi
, es
->originator_ip
);
1080 bgp_evpn_ead_evi_route_update(bgp
, es
, vpn
, &p
);
1085 /* Delete local Type-1 route */
1086 static void bgp_evpn_ead_es_route_delete(struct bgp
*bgp
,
1087 struct bgp_evpn_es
*es
)
1089 struct listnode
*node
;
1090 struct bgp_evpn_es_frag
*es_frag
;
1091 struct prefix_evpn p
;
1093 build_evpn_type1_prefix(&p
, BGP_EVPN_AD_ES_ETH_TAG
, &es
->esi
,
1095 for (ALL_LIST_ELEMENTS_RO(es
->es_frag_list
, node
, es_frag
)) {
1096 p
.prefix
.ead_addr
.frag_id
= es_frag
->rd_id
;
1097 bgp_evpn_mh_route_delete(bgp
, es
, NULL
, es_frag
, &p
);
1101 static int bgp_evpn_ead_evi_route_delete(struct bgp
*bgp
,
1102 struct bgp_evpn_es
*es
,
1103 struct bgpevpn
*vpn
,
1104 struct prefix_evpn
*p
)
1106 return bgp_evpn_mh_route_delete(bgp
, es
, vpn
, NULL
, p
);
1109 /* Generate EAD-EVI for all VNIs */
1110 static void bgp_evpn_local_type1_evi_route_add(struct bgp
*bgp
,
1111 struct bgp_evpn_es
*es
)
1113 struct listnode
*evi_node
;
1114 struct prefix_evpn p
;
1115 struct bgp_evpn_es_evi
*es_evi
;
1117 /* EAD-per-EVI routes have been suppressed */
1118 if (!bgp_mh_info
->ead_evi_tx
)
1121 if (CHECK_FLAG(es
->flags
, BGP_EVPNES_ADV_EVI
))
1122 /* EAD-EVI route add for this ES is already done */
1125 SET_FLAG(es
->flags
, BGP_EVPNES_ADV_EVI
);
1126 build_evpn_type1_prefix(&p
, BGP_EVPN_AD_EVI_ETH_TAG
,
1127 &es
->esi
, es
->originator_ip
);
1129 for (ALL_LIST_ELEMENTS_RO(es
->es_evi_list
, evi_node
, es_evi
)) {
1130 if (!CHECK_FLAG(es_evi
->flags
, BGP_EVPNES_EVI_LOCAL
))
1132 bgp_evpn_ead_evi_route_update(bgp
, es
, es_evi
->vpn
, &p
);
1137 * Withdraw EAD-EVI for all VNIs
1139 static void bgp_evpn_local_type1_evi_route_del(struct bgp
*bgp
,
1140 struct bgp_evpn_es
*es
)
1142 struct listnode
*evi_node
;
1143 struct prefix_evpn p
;
1144 struct bgp_evpn_es_evi
*es_evi
;
1146 /* Delete and withdraw locally learnt EAD-EVI route */
1147 if (!CHECK_FLAG(es
->flags
, BGP_EVPNES_ADV_EVI
))
1148 /* EAD-EVI route has not been advertised for this ES */
1151 UNSET_FLAG(es
->flags
, BGP_EVPNES_ADV_EVI
);
1152 build_evpn_type1_prefix(&p
, BGP_EVPN_AD_EVI_ETH_TAG
,
1153 &es
->esi
, es
->originator_ip
);
1154 for (ALL_LIST_ELEMENTS_RO(es
->es_evi_list
, evi_node
, es_evi
)) {
1155 if (!CHECK_FLAG(es_evi
->flags
, BGP_EVPNES_EVI_LOCAL
))
1157 if (bgp_evpn_mh_route_delete(bgp
, es
, es_evi
->vpn
, NULL
, &p
))
1158 flog_err(EC_BGP_EVPN_ROUTE_CREATE
,
1159 "%u: Type4 route creation failure for ESI %s",
1160 bgp
->vrf_id
, es
->esi_str
);
1165 * Process received EVPN type-1 route (advertise or withdraw).
1167 int bgp_evpn_type1_route_process(struct peer
*peer
, afi_t afi
, safi_t safi
,
1168 struct attr
*attr
, uint8_t *pfx
, int psize
,
1169 uint32_t addpath_id
)
1171 struct prefix_rd prd
;
1175 struct in_addr vtep_ip
;
1176 struct prefix_evpn p
;
1178 if (psize
!= BGP_EVPN_TYPE1_PSIZE
) {
1179 flog_err(EC_BGP_EVPN_ROUTE_INVALID
,
1180 "%u:%s - Rx EVPN Type-1 NLRI with invalid length %d",
1181 peer
->bgp
->vrf_id
, peer
->host
, psize
);
1185 /* Make prefix_rd */
1186 prd
.family
= AF_UNSPEC
;
1188 memcpy(&prd
.val
, pfx
, RD_BYTES
);
1192 memcpy(&esi
, pfx
, ESI_BYTES
);
1195 /* Copy Ethernet Tag */
1196 memcpy(ð_tag
, pfx
, EVPN_ETH_TAG_BYTES
);
1197 eth_tag
= ntohl(eth_tag
);
1198 pfx
+= EVPN_ETH_TAG_BYTES
;
1200 memcpy(&label
, pfx
, BGP_LABEL_BYTES
);
1202 /* EAD route prefix doesn't include the nexthop in the global
1205 vtep_ip
.s_addr
= INADDR_ANY
;
1206 build_evpn_type1_prefix(&p
, eth_tag
, &esi
, vtep_ip
);
1207 /* Process the route. */
1209 bgp_update(peer
, (struct prefix
*)&p
, addpath_id
, attr
, afi
,
1210 safi
, ZEBRA_ROUTE_BGP
, BGP_ROUTE_NORMAL
, &prd
, NULL
,
1213 bgp_withdraw(peer
, (struct prefix
*)&p
, addpath_id
, attr
, afi
,
1214 safi
, ZEBRA_ROUTE_BGP
, BGP_ROUTE_NORMAL
, &prd
,
1220 void bgp_evpn_mh_config_ead_export_rt(struct bgp
*bgp
,
1221 struct ecommunity
*ecomcfg
, bool del
)
1223 struct listnode
*node
, *nnode
, *node_to_del
;
1224 struct ecommunity
*ecom
;
1225 struct bgp_evpn_es
*es
;
1228 if (ecomcfg
== NULL
) {
1229 /* Reset to default and process all routes. */
1230 for (ALL_LIST_ELEMENTS(bgp_mh_info
->ead_es_export_rtl
,
1231 node
, nnode
, ecom
)) {
1232 ecommunity_free(&ecom
);
1233 list_delete_node(bgp_mh_info
->ead_es_export_rtl
,
1238 /* Delete a specific export RT */
1242 for (ALL_LIST_ELEMENTS(bgp_mh_info
->ead_es_export_rtl
,
1243 node
, nnode
, ecom
)) {
1244 if (ecommunity_match(ecom
, ecomcfg
)) {
1245 ecommunity_free(&ecom
);
1251 assert(node_to_del
);
1252 list_delete_node(bgp_mh_info
->ead_es_export_rtl
,
1256 listnode_add_sort(bgp_mh_info
->ead_es_export_rtl
, ecomcfg
);
1259 if (BGP_DEBUG(evpn_mh
, EVPN_MH_RT
))
1260 zlog_debug("local ES del/re-add EAD route on export RT change");
1262 * walk through all active ESs withdraw the old EAD and
1263 * generate a new one
1265 RB_FOREACH (es
, bgp_es_rb_head
, &bgp_mh_info
->es_rb_tree
) {
1266 if (!bgp_evpn_is_es_local(es
) ||
1267 !bgp_evpn_local_es_is_active(es
))
1270 if (BGP_DEBUG(evpn_mh
, EVPN_MH_RT
))
1272 "local ES %s del/re-add EAD route on export RT change",
1276 * withdraw EAD-ES. XXX - this should technically not be
1277 * needed; can be removed after testing
1279 bgp_evpn_ead_es_route_delete(bgp
, es
);
1281 /* generate EAD-ES */
1282 bgp_evpn_ead_es_route_update(bgp
, es
);
1286 /*****************************************************************************/
1287 /* Ethernet Segment Management
1288 * 1. Ethernet Segment is a collection of links attached to the same
1289 * server (MHD) or switch (MHN)
1290 * 2. An Ethernet Segment can span multiple PEs and is identified by the
1292 * 3. Local ESs are configured in zebra and sent to BGP
1293 * 4. Remote ESs are created by BGP when one or more ES-EVIs reference it i.e.
1294 * created on first reference and release on last de-reference
1295 * 5. An ES can be both local and remote. Infact most local ESs are expected
1296 * to have an ES peer.
1299 /* A list of remote VTEPs is maintained for each ES. This list includes -
1300 * 1. VTEPs for which we have imported the ESR i.e. ES-peers
1301 * 2. VTEPs that have an "active" ES-EVI VTEP i.e. EAD-per-ES and EAD-per-EVI
1302 * have been imported into one or more VNIs
1304 static int bgp_evpn_es_vtep_cmp(void *p1
, void *p2
)
1306 const struct bgp_evpn_es_vtep
*es_vtep1
= p1
;
1307 const struct bgp_evpn_es_vtep
*es_vtep2
= p2
;
1309 return es_vtep1
->vtep_ip
.s_addr
- es_vtep2
->vtep_ip
.s_addr
;
1312 static struct bgp_evpn_es_vtep
*bgp_evpn_es_vtep_new(struct bgp_evpn_es
*es
,
1313 struct in_addr vtep_ip
)
1315 struct bgp_evpn_es_vtep
*es_vtep
;
1317 es_vtep
= XCALLOC(MTYPE_BGP_EVPN_ES_VTEP
, sizeof(*es_vtep
));
1320 es_vtep
->vtep_ip
.s_addr
= vtep_ip
.s_addr
;
1321 inet_ntop(AF_INET
, &es_vtep
->vtep_ip
, es_vtep
->vtep_str
,
1322 sizeof(es_vtep
->vtep_str
));
1323 listnode_init(&es_vtep
->es_listnode
, es_vtep
);
1324 listnode_add_sort(es
->es_vtep_list
, &es_vtep
->es_listnode
);
1329 static void bgp_evpn_es_vtep_free(struct bgp_evpn_es_vtep
*es_vtep
)
1331 struct bgp_evpn_es
*es
= es_vtep
->es
;
1333 if (CHECK_FLAG(es_vtep
->flags
, BGP_EVPNES_VTEP_ESR
) ||
1335 /* as long as there is some reference we can't free it */
1338 list_delete_node(es
->es_vtep_list
, &es_vtep
->es_listnode
);
1339 XFREE(MTYPE_BGP_EVPN_ES_VTEP
, es_vtep
);
1342 /* check if VTEP is already part of the list */
1343 static struct bgp_evpn_es_vtep
*bgp_evpn_es_vtep_find(struct bgp_evpn_es
*es
,
1344 struct in_addr vtep_ip
)
1346 struct listnode
*node
= NULL
;
1347 struct bgp_evpn_es_vtep
*es_vtep
;
1349 for (ALL_LIST_ELEMENTS_RO(es
->es_vtep_list
, node
, es_vtep
)) {
1350 if (es_vtep
->vtep_ip
.s_addr
== vtep_ip
.s_addr
)
1356 /* Send the remote ES to zebra for NHG programming */
1357 static int bgp_zebra_send_remote_es_vtep(struct bgp
*bgp
,
1358 struct bgp_evpn_es_vtep
*es_vtep
, bool add
)
1360 struct bgp_evpn_es
*es
= es_vtep
->es
;
1365 if (!zclient
|| zclient
->sock
< 0)
1368 /* Don't try to register if Zebra doesn't know of this instance. */
1369 if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp
)) {
1370 if (BGP_DEBUG(zebra
, ZEBRA
))
1371 zlog_debug("No zebra instance, not installing remote es %s",
1376 if (es_vtep
->flags
& BGP_EVPNES_VTEP_ESR
)
1377 flags
|= ZAPI_ES_VTEP_FLAG_ESR_RXED
;
1382 zclient_create_header(s
,
1383 add
? ZEBRA_REMOTE_ES_VTEP_ADD
: ZEBRA_REMOTE_ES_VTEP_DEL
,
1385 stream_put(s
, &es
->esi
, sizeof(esi_t
));
1386 stream_put_ipv4(s
, es_vtep
->vtep_ip
.s_addr
);
1388 stream_putl(s
, flags
);
1389 stream_putc(s
, es_vtep
->df_alg
);
1390 stream_putw(s
, es_vtep
->df_pref
);
1393 stream_putw_at(s
, 0, stream_get_endp(s
));
1395 if (BGP_DEBUG(evpn_mh
, EVPN_MH_ES
))
1396 zlog_debug("Tx %s Remote ESI %s VTEP %pI4", add
? "ADD" : "DEL",
1397 es
->esi_str
, &es_vtep
->vtep_ip
);
1399 frrtrace(3, frr_bgp
, evpn_mh_vtep_zsend
, add
, es
, es_vtep
);
1401 return zclient_send_message(zclient
);
1404 static void bgp_evpn_es_vtep_re_eval_active(struct bgp
*bgp
,
1405 struct bgp_evpn_es_vtep
*es_vtep
,
1411 old_active
= CHECK_FLAG(es_vtep
->flags
, BGP_EVPNES_VTEP_ACTIVE
);
1412 /* currently we need an active EVI reference to use the VTEP as
1413 * a nexthop. this may change...
1415 if (es_vtep
->evi_cnt
)
1416 SET_FLAG(es_vtep
->flags
, BGP_EVPNES_VTEP_ACTIVE
);
1418 UNSET_FLAG(es_vtep
->flags
, BGP_EVPNES_VTEP_ACTIVE
);
1420 new_active
= CHECK_FLAG(es_vtep
->flags
, BGP_EVPNES_VTEP_ACTIVE
);
1422 if ((old_active
!= new_active
) || (new_active
&& param_change
)) {
1424 if (BGP_DEBUG(evpn_mh
, EVPN_MH_ES
))
1425 zlog_debug("es %s vtep %pI4 %s df %u/%u",
1426 es_vtep
->es
->esi_str
, &es_vtep
->vtep_ip
,
1427 new_active
? "active" : "inactive",
1428 es_vtep
->df_alg
, es_vtep
->df_pref
);
1430 /* send remote ES to zebra */
1431 bgp_zebra_send_remote_es_vtep(bgp
, es_vtep
, new_active
);
1433 /* The NHG is updated first for efficient failover handling.
1434 * Note the NHG can be de-activated while there are bgp
1435 * routes referencing it. Zebra is capable of handling that
1436 * elegantly by holding the NHG till all routes using it are
1439 bgp_evpn_l3nhg_update_on_vtep_chg(es_vtep
->es
);
1440 /* queue up the es for background consistency checks */
1441 bgp_evpn_es_cons_checks_pend_add(es_vtep
->es
);
1445 static struct bgp_evpn_es_vtep
*bgp_evpn_es_vtep_add(struct bgp
*bgp
,
1446 struct bgp_evpn_es
*es
,
1447 struct in_addr vtep_ip
,
1448 bool esr
, uint8_t df_alg
,
1451 struct bgp_evpn_es_vtep
*es_vtep
;
1452 bool param_change
= false;
1454 es_vtep
= bgp_evpn_es_vtep_find(es
, vtep_ip
);
1457 es_vtep
= bgp_evpn_es_vtep_new(es
, vtep_ip
);
1459 if (BGP_DEBUG(evpn_mh
, EVPN_MH_ES
))
1460 zlog_debug("es %s vtep %pI4 add %s df %u/%u",
1461 es_vtep
->es
->esi_str
, &es_vtep
->vtep_ip
,
1462 esr
? "esr" : "ead", df_alg
, df_pref
);
1465 SET_FLAG(es_vtep
->flags
, BGP_EVPNES_VTEP_ESR
);
1466 if ((es_vtep
->df_pref
!= df_pref
)
1467 || (es_vtep
->df_alg
!= df_alg
)) {
1468 param_change
= true;
1469 es_vtep
->df_pref
= df_pref
;
1470 es_vtep
->df_alg
= df_alg
;
1476 bgp_evpn_es_vtep_re_eval_active(bgp
, es_vtep
, param_change
);
1481 static void bgp_evpn_es_vtep_do_del(struct bgp
*bgp
,
1482 struct bgp_evpn_es_vtep
*es_vtep
, bool esr
)
1484 bool param_change
= false;
1486 if (BGP_DEBUG(evpn_mh
, EVPN_MH_ES
))
1487 zlog_debug("es %s vtep %pI4 del %s", es_vtep
->es
->esi_str
,
1488 &es_vtep
->vtep_ip
, esr
? "esr" : "ead");
1490 UNSET_FLAG(es_vtep
->flags
, BGP_EVPNES_VTEP_ESR
);
1491 if (es_vtep
->df_pref
|| es_vtep
->df_alg
) {
1492 param_change
= true;
1493 es_vtep
->df_pref
= 0;
1494 es_vtep
->df_alg
= 0;
1497 if (es_vtep
->evi_cnt
)
1501 bgp_evpn_es_vtep_re_eval_active(bgp
, es_vtep
, param_change
);
1502 bgp_evpn_es_vtep_free(es_vtep
);
1505 static void bgp_evpn_es_vtep_del(struct bgp
*bgp
,
1506 struct bgp_evpn_es
*es
, struct in_addr vtep_ip
, bool esr
)
1508 struct bgp_evpn_es_vtep
*es_vtep
;
1510 es_vtep
= bgp_evpn_es_vtep_find(es
, vtep_ip
);
1512 bgp_evpn_es_vtep_do_del(bgp
, es_vtep
, esr
);
1515 /********************** ES MAC-IP paths *************************************
1516 * 1. Local MAC-IP routes in the VNI routing table are linked to the
1517 * destination ES (macip_evi_path_list) for efficient updates on ES oper
1519 * 2. Non-local MAC-IP routes in the global routing table are linked to
1520 * the detination for efficient updates on -
1521 * a. VTEP add/del - this results in a L3NHG update.
1522 * b. ES-VRF add/del - this may result in the host route being migrated to
1523 * L3NHG or vice versa (flat multipath list).
1524 ****************************************************************************/
1525 static void bgp_evpn_path_es_info_free(struct bgp_path_es_info
*es_info
)
1527 bgp_evpn_path_es_unlink(es_info
);
1528 XFREE(MTYPE_BGP_EVPN_PATH_ES_INFO
, es_info
);
1531 void bgp_evpn_path_mh_info_free(struct bgp_path_mh_info
*mh_info
)
1533 if (mh_info
->es_info
)
1534 bgp_evpn_path_es_info_free(mh_info
->es_info
);
1535 if (mh_info
->nh_info
)
1536 bgp_evpn_path_nh_info_free(mh_info
->nh_info
);
1537 XFREE(MTYPE_BGP_EVPN_PATH_MH_INFO
, mh_info
);
1540 static struct bgp_path_es_info
*
1541 bgp_evpn_path_es_info_new(struct bgp_path_info
*pi
, vni_t vni
)
1543 struct bgp_path_info_extra
*e
;
1544 struct bgp_path_mh_info
*mh_info
;
1545 struct bgp_path_es_info
*es_info
;
1547 e
= bgp_path_info_extra_get(pi
);
1549 /* If mh_info doesn't exist allocate it */
1550 mh_info
= e
->mh_info
;
1552 e
->mh_info
= mh_info
= XCALLOC(MTYPE_BGP_EVPN_PATH_MH_INFO
,
1553 sizeof(struct bgp_path_mh_info
));
1555 /* If es_info doesn't exist allocate it */
1556 es_info
= mh_info
->es_info
;
1558 mh_info
->es_info
= es_info
=
1559 XCALLOC(MTYPE_BGP_EVPN_PATH_ES_INFO
,
1560 sizeof(struct bgp_path_es_info
));
1568 static void bgp_evpn_path_es_unlink(struct bgp_path_es_info
*es_info
)
1570 struct bgp_evpn_es
*es
= es_info
->es
;
1571 struct bgp_path_info
*pi
;
1577 if (BGP_DEBUG(evpn_mh
, EVPN_MH_RT
))
1578 zlog_debug("vni %u path %pFX unlinked from es %s", es_info
->vni
,
1579 &pi
->net
->p
, es
->esi_str
);
1582 list_delete_node(es
->macip_evi_path_list
,
1583 &es_info
->es_listnode
);
1585 list_delete_node(es
->macip_global_path_list
,
1586 &es_info
->es_listnode
);
1590 /* if there are no other references against the ES it
1593 bgp_evpn_es_free(es
, __func__
);
1595 /* Note we don't free the path es_info on unlink; it will be freed up
1596 * along with the path.
1600 void bgp_evpn_path_es_link(struct bgp_path_info
*pi
, vni_t vni
, esi_t
*esi
)
1602 struct bgp_path_es_info
*es_info
;
1603 struct bgp_evpn_es
*es
;
1604 struct bgp
*bgp_evpn
;
1606 es_info
= (pi
->extra
&& pi
->extra
->mh_info
)
1607 ? pi
->extra
->mh_info
->es_info
1609 /* if the esi is zero just unlink the path from the old es */
1610 if (!esi
|| !memcmp(esi
, zero_esi
, sizeof(*esi
))) {
1612 bgp_evpn_path_es_unlink(es_info
);
1616 bgp_evpn
= bgp_get_evpn();
1620 /* setup es_info against the path if it doesn't aleady exist */
1622 es_info
= bgp_evpn_path_es_info_new(pi
, vni
);
1624 /* find-create ES */
1625 es
= bgp_evpn_es_find(esi
);
1627 es
= bgp_evpn_es_new(bgp_evpn
, esi
);
1630 if (es_info
->es
== es
)
1633 /* unlink old ES if any */
1634 bgp_evpn_path_es_unlink(es_info
);
1636 if (BGP_DEBUG(evpn_mh
, EVPN_MH_RT
))
1637 zlog_debug("vni %u path %pFX linked to es %s", vni
, &pi
->net
->p
,
1640 /* link mac-ip path to the new destination ES */
1642 listnode_init(&es_info
->es_listnode
, es_info
);
1644 listnode_add(es
->macip_evi_path_list
, &es_info
->es_listnode
);
1646 listnode_add(es
->macip_global_path_list
, &es_info
->es_listnode
);
1649 static bool bgp_evpn_is_macip_path(struct bgp_path_info
*pi
)
1651 struct prefix_evpn
*evp
;
1653 /* Only MAC-IP routes need to be linked (MAC-only routes can be
1654 * skipped) as these lists are maintained for managing
1655 * host routes in the tenant VRF
1657 evp
= (struct prefix_evpn
*)&pi
->net
->p
;
1658 return is_evpn_prefix_ipaddr_v4(evp
) || is_evpn_prefix_ipaddr_v6(evp
);
1661 /* When a remote ES is added to a VRF, routes using that as
1662 * a destination need to be migrated to a L3NHG or viceversa.
1663 * This is done indirectly by re-attempting an install of the
1664 * route in the associated VRFs. As a part of the VRF install use
1665 * of l3 NHG is evaluated and this results in the
1666 * attr.es_flag ATTR_ES_L3_NHG_USE being set or cleared.
1669 bgp_evpn_es_path_update_on_es_vrf_chg(struct bgp_evpn_es_vrf
*es_vrf
,
1672 struct listnode
*node
;
1673 struct bgp_path_es_info
*es_info
;
1674 struct bgp_path_info
*pi
;
1675 struct bgp_evpn_es
*es
= es_vrf
->es
;
1677 if (!bgp_mh_info
->host_routes_use_l3nhg
)
1680 if (BGP_DEBUG(evpn_mh
, EVPN_MH_RT
))
1681 zlog_debug("update paths linked to es %s on es-vrf %s %s",
1682 es
->esi_str
, es_vrf
->bgp_vrf
->name_pretty
, reason
);
1684 for (ALL_LIST_ELEMENTS_RO(es
->macip_global_path_list
, node
, es_info
)) {
1687 if (!bgp_evpn_is_macip_path(pi
))
1690 if (BGP_DEBUG(evpn_mh
, EVPN_MH_RT
))
1692 "update path %pFX linked to es %s on vrf chg",
1693 &pi
->net
->p
, es
->esi_str
);
1694 bgp_evpn_route_entry_install_if_vrf_match(es_vrf
->bgp_vrf
, pi
,
1699 static void bgp_evpn_es_frag_free(struct bgp_evpn_es_frag
*es_frag
)
1701 struct bgp_evpn_es
*es
= es_frag
->es
;
1703 if (es
->es_base_frag
== es_frag
)
1704 es
->es_base_frag
= NULL
;
1706 if (BGP_DEBUG(evpn_mh
, EVPN_MH_ES
))
1707 zlog_debug("es %s frag %u free", es
->esi_str
, es_frag
->rd_id
);
1708 list_delete_node(es
->es_frag_list
, &es_frag
->es_listnode
);
1710 /* EVIs that are advertised using the info in this fragment */
1711 list_delete(&es_frag
->es_evi_frag_list
);
1713 bf_release_index(bm
->rd_idspace
, es_frag
->rd_id
);
1716 XFREE(MTYPE_BGP_EVPN_ES_FRAG
, es_frag
);
1719 static void bgp_evpn_es_frag_free_unused(struct bgp_evpn_es_frag
*es_frag
)
1721 if ((es_frag
->es
->es_base_frag
== es_frag
) ||
1722 listcount(es_frag
->es_evi_frag_list
))
1725 bgp_evpn_es_frag_free(es_frag
);
1728 static void bgp_evpn_es_frag_free_all(struct bgp_evpn_es
*es
)
1730 struct listnode
*node
;
1731 struct listnode
*nnode
;
1732 struct bgp_evpn_es_frag
*es_frag
;
1734 for (ALL_LIST_ELEMENTS(es
->es_frag_list
, node
, nnode
, es_frag
))
1735 bgp_evpn_es_frag_free(es_frag
);
1738 static struct bgp_evpn_es_frag
*bgp_evpn_es_frag_new(struct bgp_evpn_es
*es
)
1740 struct bgp_evpn_es_frag
*es_frag
;
1741 char buf
[BGP_EVPN_PREFIX_RD_LEN
];
1744 es_frag
= XCALLOC(MTYPE_BGP_EVPN_ES_FRAG
, sizeof(*es_frag
));
1745 bf_assign_index(bm
->rd_idspace
, es_frag
->rd_id
);
1746 es_frag
->prd
.family
= AF_UNSPEC
;
1747 es_frag
->prd
.prefixlen
= 64;
1748 bgp
= bgp_get_evpn();
1749 snprintfrr(buf
, sizeof(buf
), "%pI4:%hu", &bgp
->router_id
,
1751 (void)str2prefix_rd(buf
, &es_frag
->prd
);
1753 /* EVIs that are advertised using the info in this fragment */
1754 es_frag
->es_evi_frag_list
= list_new();
1755 listset_app_node_mem(es_frag
->es_evi_frag_list
);
1757 /* Link the fragment to the parent ES */
1759 listnode_init(&es_frag
->es_listnode
, es_frag
);
1760 listnode_add(es
->es_frag_list
, &es_frag
->es_listnode
);
1762 if (BGP_DEBUG(evpn_mh
, EVPN_MH_ES
))
1763 zlog_debug("es %s frag %u new", es
->esi_str
, es_frag
->rd_id
);
1767 static struct bgp_evpn_es_frag
*
1768 bgp_evpn_es_find_frag_with_space(struct bgp_evpn_es
*es
)
1770 struct listnode
*node
;
1771 struct bgp_evpn_es_frag
*es_frag
;
1773 for (ALL_LIST_ELEMENTS_RO(es
->es_frag_list
, node
, es_frag
)) {
1774 if (listcount(es_frag
->es_evi_frag_list
) <
1775 bgp_mh_info
->evi_per_es_frag
)
1779 /* No frags where found with space; allocate a new one */
1780 return bgp_evpn_es_frag_new(es
);
1783 /* Link the ES-EVI to one of the ES fragments */
1784 static void bgp_evpn_es_frag_evi_add(struct bgp_evpn_es_evi
*es_evi
)
1786 struct bgp_evpn_es_frag
*es_frag
;
1787 struct bgp_evpn_es
*es
= es_evi
->es
;
1789 if (es_evi
->es_frag
||
1790 !(CHECK_FLAG(es_evi
->flags
, BGP_EVPNES_EVI_LOCAL
)))
1793 es_frag
= bgp_evpn_es_find_frag_with_space(es
);
1795 es_evi
->es_frag
= es_frag
;
1796 listnode_init(&es_evi
->es_frag_listnode
, es_evi
);
1797 listnode_add(es_frag
->es_evi_frag_list
, &es_evi
->es_frag_listnode
);
1799 if (BGP_DEBUG(evpn_mh
, EVPN_MH_ES
))
1800 zlog_debug("es %s vni %d linked to frag %u", es
->esi_str
,
1801 es_evi
->vpn
->vni
, es_frag
->rd_id
);
1804 /* UnLink the ES-EVI from the ES fragment */
1805 static void bgp_evpn_es_frag_evi_del(struct bgp_evpn_es_evi
*es_evi
,
1806 bool send_ead_del_if_empty
)
1808 struct bgp_evpn_es_frag
*es_frag
= es_evi
->es_frag
;
1809 struct prefix_evpn p
;
1810 struct bgp_evpn_es
*es
;
1817 es_evi
->es_frag
= NULL
;
1818 if (BGP_DEBUG(evpn_mh
, EVPN_MH_ES
))
1819 zlog_debug("es %s vni %d unlinked from frag %u", es
->esi_str
,
1820 es_evi
->vpn
->vni
, es_frag
->rd_id
);
1822 list_delete_node(es_frag
->es_evi_frag_list
, &es_evi
->es_frag_listnode
);
1825 * if there are no other EVIs on the fragment deleted the EAD-ES for
1828 if (send_ead_del_if_empty
&& !listcount(es_frag
->es_evi_frag_list
)) {
1829 bgp
= bgp_get_evpn();
1831 if (BGP_DEBUG(evpn_mh
, EVPN_MH_ES
))
1832 zlog_debug("es %s frag %u ead-es route delete",
1833 es
->esi_str
, es_frag
->rd_id
);
1834 build_evpn_type1_prefix(&p
, BGP_EVPN_AD_ES_ETH_TAG
, &es
->esi
,
1836 p
.prefix
.ead_addr
.frag_id
= es_frag
->rd_id
;
1837 bgp_evpn_mh_route_delete(bgp
, es
, NULL
, es_frag
, &p
);
1840 /* We don't attempt to coalesce frags that may not be full. Instead we
1841 * only free up the frag when it is completely empty.
1843 bgp_evpn_es_frag_free_unused(es_frag
);
1846 /* Link the ES-EVIs to one of the ES fragments */
1847 static void bgp_evpn_es_frag_evi_update_all(struct bgp_evpn_es
*es
, bool add
)
1849 struct listnode
*node
;
1850 struct bgp_evpn_es_evi
*es_evi
;
1852 for (ALL_LIST_ELEMENTS_RO(es
->es_evi_list
, node
, es_evi
)) {
1854 bgp_evpn_es_frag_evi_add(es_evi
);
1856 bgp_evpn_es_frag_evi_del(es_evi
, false);
1860 /* compare ES-IDs for the global ES RB tree */
1861 static int bgp_es_rb_cmp(const struct bgp_evpn_es
*es1
,
1862 const struct bgp_evpn_es
*es2
)
1864 return memcmp(&es1
->esi
, &es2
->esi
, ESI_BYTES
);
1866 RB_GENERATE(bgp_es_rb_head
, bgp_evpn_es
, rb_node
, bgp_es_rb_cmp
);
1868 struct bgp_evpn_es
*bgp_evpn_es_find(const esi_t
*esi
)
1870 struct bgp_evpn_es tmp
;
1872 memcpy(&tmp
.esi
, esi
, sizeof(esi_t
));
1873 return RB_FIND(bgp_es_rb_head
, &bgp_mh_info
->es_rb_tree
, &tmp
);
1876 static struct bgp_evpn_es
*bgp_evpn_es_new(struct bgp
*bgp
, const esi_t
*esi
)
1878 struct bgp_evpn_es
*es
;
1880 es
= XCALLOC(MTYPE_BGP_EVPN_ES
, sizeof(struct bgp_evpn_es
));
1883 memcpy(&es
->esi
, esi
, sizeof(esi_t
));
1885 /* Initialise the VTEP list */
1886 es
->es_vtep_list
= list_new();
1887 listset_app_node_mem(es
->es_vtep_list
);
1888 es
->es_vtep_list
->cmp
= bgp_evpn_es_vtep_cmp
;
1890 esi_to_str(&es
->esi
, es
->esi_str
, sizeof(es
->esi_str
));
1892 /* Initialize the ES routing table */
1893 es
->route_table
= bgp_table_init(bgp
, AFI_L2VPN
, SAFI_EVPN
);
1895 /* Add to rb_tree */
1896 RB_INSERT(bgp_es_rb_head
, &bgp_mh_info
->es_rb_tree
, es
);
1898 /* Initialise the ES-EVI list */
1899 es
->es_evi_list
= list_new();
1900 listset_app_node_mem(es
->es_evi_list
);
1902 /* Initialise the ES-VRF list used for L3NHG management */
1903 es
->es_vrf_list
= list_new();
1904 listset_app_node_mem(es
->es_vrf_list
);
1906 /* Initialise the route list used for efficient event handling */
1907 es
->macip_evi_path_list
= list_new();
1908 listset_app_node_mem(es
->macip_evi_path_list
);
1909 es
->macip_global_path_list
= list_new();
1910 listset_app_node_mem(es
->macip_global_path_list
);
1911 es
->es_frag_list
= list_new();
1912 listset_app_node_mem(es
->es_frag_list
);
1914 QOBJ_REG(es
, bgp_evpn_es
);
1919 /* Free a given ES -
1920 * This just frees appropriate memory, caller should have taken other
1923 static void bgp_evpn_es_free(struct bgp_evpn_es
*es
, const char *caller
)
1925 if ((es
->flags
& (BGP_EVPNES_LOCAL
| BGP_EVPNES_REMOTE
))
1926 || listcount(es
->macip_evi_path_list
)
1927 || listcount(es
->macip_global_path_list
))
1930 if (BGP_DEBUG(evpn_mh
, EVPN_MH_ES
))
1931 zlog_debug("%s: es %s free", caller
, es
->esi_str
);
1933 /* cleanup resources maintained against the ES */
1934 list_delete(&es
->es_evi_list
);
1935 list_delete(&es
->es_vrf_list
);
1936 list_delete(&es
->es_vtep_list
);
1937 list_delete(&es
->macip_evi_path_list
);
1938 list_delete(&es
->macip_global_path_list
);
1939 list_delete(&es
->es_frag_list
);
1940 bgp_table_unlock(es
->route_table
);
1942 /* remove the entry from various databases */
1943 RB_REMOVE(bgp_es_rb_head
, &bgp_mh_info
->es_rb_tree
, es
);
1944 bgp_evpn_es_cons_checks_pend_del(es
);
1947 XFREE(MTYPE_BGP_EVPN_ES
, es
);
1950 static inline bool bgp_evpn_is_es_local_and_non_bypass(struct bgp_evpn_es
*es
)
1952 return (es
->flags
& BGP_EVPNES_LOCAL
)
1953 && !(es
->flags
& BGP_EVPNES_BYPASS
);
1956 /* init local info associated with the ES */
1957 static void bgp_evpn_es_local_info_set(struct bgp
*bgp
, struct bgp_evpn_es
*es
)
1962 if (CHECK_FLAG(es
->flags
, BGP_EVPNES_LOCAL
))
1965 old_is_local
= bgp_evpn_is_es_local_and_non_bypass(es
);
1966 SET_FLAG(es
->flags
, BGP_EVPNES_LOCAL
);
1968 listnode_init(&es
->es_listnode
, es
);
1969 listnode_add(bgp_mh_info
->local_es_list
, &es
->es_listnode
);
1971 /* setup the first ES fragment; more fragments may be allocated based
1972 * on the the number of EVI entries
1974 es
->es_base_frag
= bgp_evpn_es_frag_new(es
);
1975 /* distribute ES-EVIs to one or more ES fragments */
1976 bgp_evpn_es_frag_evi_update_all(es
, true);
1978 is_local
= bgp_evpn_is_es_local_and_non_bypass(es
);
1979 if (old_is_local
!= is_local
)
1980 bgp_evpn_mac_update_on_es_local_chg(es
, is_local
);
1983 /* clear any local info associated with the ES */
1984 static void bgp_evpn_es_local_info_clear(struct bgp_evpn_es
*es
, bool finish
)
1989 if (!CHECK_FLAG(es
->flags
, BGP_EVPNES_LOCAL
))
1992 /* clear the es frag references and free them up */
1993 bgp_evpn_es_frag_evi_update_all(es
, false);
1994 es
->es_base_frag
= NULL
;
1995 bgp_evpn_es_frag_free_all(es
);
1997 old_is_local
= bgp_evpn_is_es_local_and_non_bypass(es
);
1998 UNSET_FLAG(es
->flags
, BGP_EVPNES_LOCAL
);
2000 is_local
= bgp_evpn_is_es_local_and_non_bypass(es
);
2001 if (!finish
&& (old_is_local
!= is_local
))
2002 bgp_evpn_mac_update_on_es_local_chg(es
, is_local
);
2004 /* remove from the ES local list */
2005 list_delete_node(bgp_mh_info
->local_es_list
, &es
->es_listnode
);
2007 bgp_evpn_es_free(es
, __func__
);
2010 /* eval remote info associated with the ES */
2011 static void bgp_evpn_es_remote_info_re_eval(struct bgp_evpn_es
*es
)
2013 if (es
->remote_es_evi_cnt
) {
2014 SET_FLAG(es
->flags
, BGP_EVPNES_REMOTE
);
2016 if (CHECK_FLAG(es
->flags
, BGP_EVPNES_REMOTE
)) {
2017 UNSET_FLAG(es
->flags
, BGP_EVPNES_REMOTE
);
2018 bgp_evpn_es_free(es
, __func__
);
2023 /* If ES is present and local it needs to be active/oper-up for
2026 bool bgp_evpn_es_add_l3_ecomm_ok(esi_t
*esi
)
2028 struct bgp_evpn_es
*es
;
2030 if (!esi
|| !bgp_mh_info
->suppress_l3_ecomm_on_inactive_es
)
2033 es
= bgp_evpn_es_find(esi
);
2035 return (!es
|| !(es
->flags
& BGP_EVPNES_LOCAL
)
2036 || bgp_evpn_local_es_is_active(es
));
2039 static bool bgp_evpn_is_valid_local_path(struct bgp_path_info
*pi
)
2041 return (CHECK_FLAG(pi
->flags
, BGP_PATH_VALID
)
2042 && pi
->type
== ZEBRA_ROUTE_BGP
2043 && pi
->sub_type
== BGP_ROUTE_STATIC
);
2046 /* Update all local MAC-IP routes in the VNI routing table associated
2047 * with the ES. When the ES is down the routes are advertised without
2050 static void bgp_evpn_mac_update_on_es_oper_chg(struct bgp_evpn_es
*es
)
2052 struct listnode
*node
;
2053 struct bgp_path_es_info
*es_info
;
2054 struct bgp_path_info
*pi
;
2056 struct bgpevpn
*vpn
;
2058 if (!bgp_mh_info
->suppress_l3_ecomm_on_inactive_es
)
2061 if (BGP_DEBUG(evpn_mh
, EVPN_MH_ES
))
2062 zlog_debug("update paths linked to es %s on oper chg",
2065 bgp
= bgp_get_evpn();
2066 for (ALL_LIST_ELEMENTS_RO(es
->macip_evi_path_list
, node
, es_info
)) {
2069 if (!bgp_evpn_is_valid_local_path(pi
))
2072 if (!bgp_evpn_is_macip_path(pi
))
2075 vpn
= bgp_evpn_lookup_vni(bgp
, es_info
->vni
);
2079 if (BGP_DEBUG(evpn_mh
, EVPN_MH_RT
))
2081 "update path %d %pFX linked to es %s on oper chg",
2082 es_info
->vni
, &pi
->net
->p
, es
->esi_str
);
2084 bgp_evpn_update_type2_route_entry(bgp
, vpn
, pi
->net
, pi
,
2089 static bool bgp_evpn_is_valid_bgp_path(struct bgp_path_info
*pi
)
2091 return (CHECK_FLAG(pi
->flags
, BGP_PATH_VALID
)
2092 && pi
->type
== ZEBRA_ROUTE_BGP
2093 && pi
->sub_type
== BGP_ROUTE_NORMAL
);
2096 /* If an ES is no longer local (or becomes local) we need to re-install
2097 * paths using that ES as destination. This is needed as the criteria
2098 * for best path selection has changed.
2100 static void bgp_evpn_mac_update_on_es_local_chg(struct bgp_evpn_es
*es
,
2103 struct listnode
*node
;
2104 struct bgp_path_es_info
*es_info
;
2105 struct bgp_path_info
*pi
;
2107 struct attr
*attr_new
;
2108 struct attr attr_tmp
;
2110 if (BGP_DEBUG(evpn_mh
, EVPN_MH_ES
))
2111 zlog_debug("update paths linked to es %s on chg to %s",
2112 es
->esi_str
, is_local
? "local" : "non-local");
2114 for (ALL_LIST_ELEMENTS_RO(es
->macip_global_path_list
, node
, es_info
)) {
2117 /* Consider "valid" remote routes */
2118 if (!bgp_evpn_is_valid_bgp_path(pi
))
2124 tmp_local
= !!(pi
->attr
->es_flags
& ATTR_ES_IS_LOCAL
);
2125 if (tmp_local
== is_local
)
2128 if (BGP_DEBUG(evpn_mh
, EVPN_MH_RT
))
2130 "update path %pFX linked to es %s on chg to %s",
2131 &pi
->net
->p
, es
->esi_str
,
2132 is_local
? "local" : "non-local");
2134 attr_tmp
= *pi
->attr
;
2136 attr_tmp
.es_flags
|= ATTR_ES_IS_LOCAL
;
2138 attr_tmp
.es_flags
&= ~ATTR_ES_IS_LOCAL
;
2139 attr_new
= bgp_attr_intern(&attr_tmp
);
2140 bgp_attr_unintern(&pi
->attr
);
2141 pi
->attr
= attr_new
;
2142 bgp_evpn_import_type2_route(pi
, 1);
2146 static void bgp_evpn_local_es_deactivate(struct bgp
*bgp
,
2147 struct bgp_evpn_es
*es
)
2149 struct prefix_evpn p
;
2153 /* Delete and withdraw locally learnt ES route */
2154 build_evpn_type4_prefix(&p
, &es
->esi
, es
->originator_ip
);
2155 ret
= bgp_evpn_type4_route_delete(bgp
, es
, &p
);
2157 flog_err(EC_BGP_EVPN_ROUTE_DELETE
,
2158 "%u failed to delete type-4 route for ESI %s",
2159 bgp
->vrf_id
, es
->esi_str
);
2162 /* withdraw EAD-EVI */
2163 if (!bgp_mh_info
->ead_evi_adv_for_down_links
)
2164 bgp_evpn_local_type1_evi_route_del(bgp
, es
);
2166 /* withdraw EAD-ES */
2167 bgp_evpn_ead_es_route_delete(bgp
, es
);
2169 bgp_evpn_mac_update_on_es_oper_chg(es
);
2172 /* Process ES link oper-down by withdrawing ES-EAD and ESR */
2173 static void bgp_evpn_local_es_down(struct bgp
*bgp
, struct bgp_evpn_es
*es
)
2177 if (!CHECK_FLAG(es
->flags
, BGP_EVPNES_OPER_UP
))
2180 old_active
= bgp_evpn_local_es_is_active(es
);
2181 UNSET_FLAG(es
->flags
, BGP_EVPNES_OPER_UP
);
2183 if (BGP_DEBUG(evpn_mh
, EVPN_MH_ES
))
2184 zlog_debug("local es %s down", es
->esi_str
);
2187 bgp_evpn_local_es_deactivate(bgp
, es
);
2190 static void bgp_evpn_local_es_activate(struct bgp
*bgp
, struct bgp_evpn_es
*es
,
2191 bool regen_ead
, bool regen_esr
)
2193 struct prefix_evpn p
;
2196 if (BGP_DEBUG(evpn_mh
, EVPN_MH_ES
))
2197 zlog_debug("local es %s generate ESR", es
->esi_str
);
2199 build_evpn_type4_prefix(&p
, &es
->esi
, es
->originator_ip
);
2200 if (bgp_evpn_type4_route_update(bgp
, es
, &p
))
2201 flog_err(EC_BGP_EVPN_ROUTE_CREATE
,
2202 "%u: Type4 route creation failure for ESI %s",
2203 bgp
->vrf_id
, es
->esi_str
);
2207 if (BGP_DEBUG(evpn_mh
, EVPN_MH_ES
))
2208 zlog_debug("local es %s generate EAD", es
->esi_str
);
2209 /* generate EAD-EVI */
2210 bgp_evpn_local_type1_evi_route_add(bgp
, es
);
2212 /* generate EAD-ES */
2213 bgp_evpn_ead_es_route_update(bgp
, es
);
2216 bgp_evpn_mac_update_on_es_oper_chg(es
);
2219 /* Process ES link oper-up by generating ES-EAD and ESR */
2220 static void bgp_evpn_local_es_up(struct bgp
*bgp
, struct bgp_evpn_es
*es
,
2223 bool regen_ead
= false;
2224 bool active
= false;
2226 if (!CHECK_FLAG(es
->flags
, BGP_EVPNES_OPER_UP
)) {
2227 if (BGP_DEBUG(evpn_mh
, EVPN_MH_ES
))
2228 zlog_debug("local es %s up", es
->esi_str
);
2230 SET_FLAG(es
->flags
, BGP_EVPNES_OPER_UP
);
2235 active
= bgp_evpn_local_es_is_active(es
);
2236 if (active
&& (regen_ead
|| regen_esr
))
2237 bgp_evpn_local_es_activate(bgp
, es
, regen_ead
, regen_esr
);
2240 /* If an ethernet segment is in LACP bypass we cannot advertise
2241 * reachability to it i.e. EAD-per-ES and ESR is not advertised in
2243 * PS: EAD-per-EVI will continue to be advertised
2245 static void bgp_evpn_local_es_bypass_update(struct bgp
*bgp
,
2246 struct bgp_evpn_es
*es
, bool bypass
)
2248 bool old_bypass
= !!(es
->flags
& BGP_EVPNES_BYPASS
);
2254 if (bypass
== old_bypass
)
2257 old_active
= bgp_evpn_local_es_is_active(es
);
2258 old_is_local
= bgp_evpn_is_es_local_and_non_bypass(es
);
2260 SET_FLAG(es
->flags
, BGP_EVPNES_BYPASS
);
2262 UNSET_FLAG(es
->flags
, BGP_EVPNES_BYPASS
);
2264 if (BGP_DEBUG(evpn_mh
, EVPN_MH_ES
))
2265 zlog_debug("local es %s bypass %s", es
->esi_str
,
2266 bypass
? "set" : "clear");
2268 new_active
= bgp_evpn_local_es_is_active(es
);
2269 if (old_active
!= new_active
) {
2271 bgp_evpn_local_es_activate(bgp
, es
, true, true);
2273 bgp_evpn_local_es_deactivate(bgp
, es
);
2276 is_local
= bgp_evpn_is_es_local_and_non_bypass(es
);
2277 if (old_is_local
!= is_local
)
2278 bgp_evpn_mac_update_on_es_local_chg(es
, is_local
);
2281 static void bgp_evpn_local_es_do_del(struct bgp
*bgp
, struct bgp_evpn_es
*es
)
2283 struct bgp_evpn_es_evi
*es_evi
;
2284 struct listnode
*evi_node
, *evi_next_node
;
2286 if (BGP_DEBUG(evpn_mh
, EVPN_MH_ES
))
2287 zlog_debug("del local es %s", es
->esi_str
);
2289 /* Delete all local EVPN ES routes from ESI table
2290 * and schedule for processing (to withdraw from peers))
2292 bgp_evpn_es_route_del_all(bgp
, es
);
2294 /* release all local ES EVIs associated with the ES */
2295 for (ALL_LIST_ELEMENTS(es
->es_evi_list
, evi_node
,
2296 evi_next_node
, es_evi
)) {
2297 bgp_evpn_local_es_evi_do_del(es_evi
);
2300 /* Clear local info associated with the ES and free it up if there is
2301 * no remote reference
2303 bgp_evpn_es_local_info_clear(es
, false);
2306 bool bgp_evpn_is_esi_local_and_non_bypass(esi_t
*esi
)
2308 struct bgp_evpn_es
*es
= NULL
;
2310 /* Lookup ESI hash - should exist. */
2311 es
= bgp_evpn_es_find(esi
);
2313 return es
&& bgp_evpn_is_es_local_and_non_bypass(es
);
2316 int bgp_evpn_local_es_del(struct bgp
*bgp
, esi_t
*esi
)
2318 struct bgp_evpn_es
*es
= NULL
;
2320 /* Lookup ESI hash - should exist. */
2321 es
= bgp_evpn_es_find(esi
);
2323 flog_warn(EC_BGP_EVPN_ESI
, "%u: ES missing at local ES DEL",
2328 bgp_evpn_local_es_do_del(bgp
, es
);
2332 /* Handle device to ES id association. Results in the creation of a local
2335 int bgp_evpn_local_es_add(struct bgp
*bgp
, esi_t
*esi
,
2336 struct in_addr originator_ip
, bool oper_up
,
2337 uint16_t df_pref
, bool bypass
)
2339 struct bgp_evpn_es
*es
;
2341 bool regen_esr
= false;
2343 /* create the new es */
2344 es
= bgp_evpn_es_find(esi
);
2346 if (CHECK_FLAG(es
->flags
, BGP_EVPNES_LOCAL
))
2349 es
= bgp_evpn_es_new(bgp
, esi
);
2351 if (BGP_DEBUG(evpn_mh
, EVPN_MH_ES
))
2352 zlog_debug("add local es %s orig-ip %pI4 df_pref %u %s",
2353 es
->esi_str
, &originator_ip
, df_pref
,
2354 bypass
? "bypass" : "");
2356 es
->originator_ip
= originator_ip
;
2357 if (df_pref
!= es
->df_pref
) {
2358 es
->df_pref
= df_pref
;
2361 bgp_evpn_es_local_info_set(bgp
, es
);
2363 /* import all remote Type-4 routes in the ES table */
2365 bgp_evpn_type4_remote_routes_import(bgp
, es
,
2366 true /* install */);
2368 /* create and advertise EAD-EVI routes for the ES -
2369 * XXX - till an ES-EVI reference is created there is really nothing to
2372 if (bgp_mh_info
->ead_evi_adv_for_down_links
)
2373 bgp_evpn_local_type1_evi_route_add(bgp
, es
);
2375 bgp_evpn_local_es_bypass_update(bgp
, es
, bypass
);
2377 /* If the ES link is operationally up generate EAD-ES. EAD-EVI
2378 * can be generated even if the link is inactive.
2381 bgp_evpn_local_es_up(bgp
, es
, regen_esr
);
2383 bgp_evpn_local_es_down(bgp
, es
);
2388 static void bgp_evpn_es_json_frag_fill(json_object
*json_frags
,
2389 struct bgp_evpn_es
*es
)
2391 json_object
*json_frag
;
2392 struct listnode
*node
;
2393 struct bgp_evpn_es_frag
*es_frag
;
2395 for (ALL_LIST_ELEMENTS_RO(es
->es_frag_list
, node
, es_frag
)) {
2396 json_frag
= json_object_new_object();
2398 json_object_string_addf(json_frag
, "rd", "%pRD", &es_frag
->prd
);
2399 json_object_int_add(json_frag
, "eviCount",
2400 listcount(es_frag
->es_evi_frag_list
));
2402 json_object_array_add(json_frags
, json_frag
);
2406 static void bgp_evpn_es_frag_show_detail(struct vty
*vty
,
2407 struct bgp_evpn_es
*es
)
2409 struct listnode
*node
;
2410 struct bgp_evpn_es_frag
*es_frag
;
2412 for (ALL_LIST_ELEMENTS_RO(es
->es_frag_list
, node
, es_frag
)) {
2413 vty_out(vty
, " %pRD EVIs: %d\n", &es_frag
->prd
,
2414 listcount(es_frag
->es_evi_frag_list
));
2418 static char *bgp_evpn_es_vteps_str(char *vtep_str
, struct bgp_evpn_es
*es
,
2419 uint8_t vtep_str_size
)
2421 char vtep_flag_str
[BGP_EVPN_FLAG_STR_SZ
];
2422 struct listnode
*node
;
2423 struct bgp_evpn_es_vtep
*es_vtep
;
2425 char ip_buf
[INET_ADDRSTRLEN
];
2428 for (ALL_LIST_ELEMENTS_RO(es
->es_vtep_list
, node
, es_vtep
)) {
2429 vtep_flag_str
[0] = '\0';
2431 if (es_vtep
->flags
& BGP_EVPNES_VTEP_ESR
)
2432 strlcat(vtep_flag_str
, "E", sizeof(vtep_flag_str
));
2433 if (es_vtep
->flags
& BGP_EVPNES_VTEP_ACTIVE
)
2434 strlcat(vtep_flag_str
, "A", sizeof(vtep_flag_str
));
2436 if (!strlen(vtep_flag_str
))
2437 strlcat(vtep_flag_str
, "-", sizeof(vtep_flag_str
));
2441 strlcat(vtep_str
, ",", vtep_str_size
);
2443 inet_ntop(AF_INET
, &es_vtep
->vtep_ip
, ip_buf
,
2446 strlcat(vtep_str
, "(", vtep_str_size
);
2447 strlcat(vtep_str
, vtep_flag_str
, vtep_str_size
);
2448 strlcat(vtep_str
, ")", vtep_str_size
);
2454 static void bgp_evpn_es_json_vtep_fill(json_object
*json_vteps
,
2455 struct bgp_evpn_es_vtep
*es_vtep
)
2457 json_object
*json_vtep_entry
;
2458 json_object
*json_flags
;
2460 json_vtep_entry
= json_object_new_object();
2462 json_object_string_addf(json_vtep_entry
, "vtep_ip", "%pI4",
2464 if (es_vtep
->flags
& (BGP_EVPNES_VTEP_ESR
|
2465 BGP_EVPNES_VTEP_ACTIVE
)) {
2466 json_flags
= json_object_new_array();
2467 if (es_vtep
->flags
& BGP_EVPNES_VTEP_ESR
)
2468 json_array_string_add(json_flags
, "esr");
2469 if (es_vtep
->flags
& BGP_EVPNES_VTEP_ACTIVE
)
2470 json_array_string_add(json_flags
, "active");
2471 json_object_object_add(json_vtep_entry
, "flags", json_flags
);
2472 if (es_vtep
->flags
& BGP_EVPNES_VTEP_ESR
) {
2473 json_object_int_add(json_vtep_entry
, "dfPreference",
2475 json_object_int_add(json_vtep_entry
, "dfAlgorithm",
2480 json_object_array_add(json_vteps
,
2484 static void bgp_evpn_es_vteps_show_detail(struct vty
*vty
,
2485 struct bgp_evpn_es
*es
)
2487 char vtep_flag_str
[BGP_EVPN_FLAG_STR_SZ
];
2488 struct listnode
*node
;
2489 struct bgp_evpn_es_vtep
*es_vtep
;
2490 char alg_buf
[EVPN_DF_ALG_STR_LEN
];
2492 for (ALL_LIST_ELEMENTS_RO(es
->es_vtep_list
, node
, es_vtep
)) {
2493 vtep_flag_str
[0] = '\0';
2494 if (es_vtep
->flags
& BGP_EVPNES_VTEP_ESR
)
2495 strlcat(vtep_flag_str
, "E", sizeof(vtep_flag_str
));
2496 if (es_vtep
->flags
& BGP_EVPNES_VTEP_ACTIVE
)
2497 strlcat(vtep_flag_str
, "A", sizeof(vtep_flag_str
));
2499 if (!strlen(vtep_flag_str
))
2500 strlcat(vtep_flag_str
, "-", sizeof(vtep_flag_str
));
2502 vty_out(vty
, " %pI4 flags: %s", &es_vtep
->vtep_ip
,
2505 if (es_vtep
->flags
& BGP_EVPNES_VTEP_ESR
)
2506 vty_out(vty
, " df_alg: %s df_pref: %u\n",
2507 evpn_es_df_alg2str(es_vtep
->df_alg
, alg_buf
,
2515 static void bgp_evpn_es_show_entry(struct vty
*vty
,
2516 struct bgp_evpn_es
*es
, json_object
*json
)
2518 struct listnode
*node
;
2519 struct bgp_evpn_es_vtep
*es_vtep
;
2522 json_object
*json_vteps
;
2523 json_object
*json_types
;
2525 json_object_string_add(json
, "esi", es
->esi_str
);
2526 if (es
->es_base_frag
)
2527 json_object_string_addf(json
, "rd", "%pRD",
2528 &es
->es_base_frag
->prd
);
2530 if (es
->flags
& (BGP_EVPNES_LOCAL
| BGP_EVPNES_REMOTE
)) {
2531 json_types
= json_object_new_array();
2532 if (es
->flags
& BGP_EVPNES_LOCAL
)
2533 json_array_string_add(json_types
, "local");
2534 if (es
->flags
& BGP_EVPNES_REMOTE
)
2535 json_array_string_add(json_types
, "remote");
2536 json_object_object_add(json
, "type", json_types
);
2539 if (listcount(es
->es_vtep_list
)) {
2540 json_vteps
= json_object_new_array();
2541 for (ALL_LIST_ELEMENTS_RO(es
->es_vtep_list
,
2543 bgp_evpn_es_json_vtep_fill(json_vteps
, es_vtep
);
2545 json_object_object_add(json
, "vteps", json_vteps
);
2547 json_object_int_add(json
, "vniCount",
2548 listcount(es
->es_evi_list
));
2551 char vtep_str
[ES_VTEP_LIST_STR_SZ
+ BGP_EVPN_VTEPS_FLAG_STR_SZ
];
2554 if (es
->flags
& BGP_EVPNES_BYPASS
)
2555 strlcat(type_str
, "B", sizeof(type_str
));
2556 if (es
->flags
& BGP_EVPNES_LOCAL
)
2557 strlcat(type_str
, "L", sizeof(type_str
));
2558 if (es
->flags
& BGP_EVPNES_REMOTE
)
2559 strlcat(type_str
, "R", sizeof(type_str
));
2560 if (es
->inconsistencies
)
2561 strlcat(type_str
, "I", sizeof(type_str
));
2563 bgp_evpn_es_vteps_str(vtep_str
, es
, sizeof(vtep_str
));
2565 vty_out(vty
, "%-30s %-5s %-21pRD %-8d %s\n", es
->esi_str
,
2566 type_str
, &es
->es_base_frag
->prd
,
2567 listcount(es
->es_evi_list
), vtep_str
);
2571 static void bgp_evpn_es_show_entry_detail(struct vty
*vty
,
2572 struct bgp_evpn_es
*es
, json_object
*json
)
2575 json_object
*json_flags
;
2576 json_object
*json_incons
;
2577 json_object
*json_vteps
;
2578 json_object
*json_frags
;
2579 struct listnode
*node
;
2580 struct bgp_evpn_es_vtep
*es_vtep
;
2582 /* Add the "brief" info first */
2583 bgp_evpn_es_show_entry(vty
, es
, json
);
2585 & (BGP_EVPNES_OPER_UP
| BGP_EVPNES_ADV_EVI
2586 | BGP_EVPNES_BYPASS
)) {
2587 json_flags
= json_object_new_array();
2588 if (es
->flags
& BGP_EVPNES_OPER_UP
)
2589 json_array_string_add(json_flags
, "up");
2590 if (es
->flags
& BGP_EVPNES_ADV_EVI
)
2591 json_array_string_add(json_flags
,
2593 if (es
->flags
& BGP_EVPNES_BYPASS
)
2594 json_array_string_add(json_flags
, "bypass");
2595 json_object_object_add(json
, "flags", json_flags
);
2597 json_object_string_addf(json
, "originator_ip", "%pI4",
2598 &es
->originator_ip
);
2599 json_object_int_add(json
, "remoteVniCount",
2600 es
->remote_es_evi_cnt
);
2601 json_object_int_add(json
, "vrfCount",
2602 listcount(es
->es_vrf_list
));
2603 json_object_int_add(json
, "macipPathCount",
2604 listcount(es
->macip_evi_path_list
));
2605 json_object_int_add(json
, "macipGlobalPathCount",
2606 listcount(es
->macip_global_path_list
));
2607 json_object_int_add(json
, "inconsistentVniVtepCount",
2608 es
->incons_evi_vtep_cnt
);
2609 if (listcount(es
->es_vtep_list
)) {
2610 json_vteps
= json_object_new_array();
2611 for (ALL_LIST_ELEMENTS_RO(es
->es_vtep_list
, node
,
2613 bgp_evpn_es_json_vtep_fill(json_vteps
, es_vtep
);
2615 json_object_object_add(json
, "vteps", json_vteps
);
2617 if (listcount(es
->es_frag_list
)) {
2618 json_frags
= json_object_new_array();
2619 bgp_evpn_es_json_frag_fill(json_frags
, es
);
2620 json_object_object_add(json
, "fragments", json_frags
);
2622 if (es
->inconsistencies
) {
2623 json_incons
= json_object_new_array();
2624 if (es
->inconsistencies
& BGP_EVPNES_INCONS_VTEP_LIST
)
2625 json_array_string_add(json_incons
,
2626 "vni-vtep-mismatch");
2627 json_object_object_add(json
, "inconsistencies",
2631 char incons_str
[BGP_EVPNES_INCONS_STR_SZ
];
2635 if (es
->flags
& BGP_EVPNES_LOCAL
)
2636 strlcat(type_str
, "L", sizeof(type_str
));
2637 if (es
->flags
& BGP_EVPNES_REMOTE
)
2638 strlcat(type_str
, "R", sizeof(type_str
));
2640 vty_out(vty
, "ESI: %s\n", es
->esi_str
);
2641 vty_out(vty
, " Type: %s\n", type_str
);
2642 vty_out(vty
, " RD: %pRD\n", &es
->es_base_frag
->prd
);
2643 vty_out(vty
, " Originator-IP: %pI4\n", &es
->originator_ip
);
2644 if (es
->flags
& BGP_EVPNES_LOCAL
)
2645 vty_out(vty
, " Local ES DF preference: %u\n",
2647 if (es
->flags
& BGP_EVPNES_BYPASS
)
2648 vty_out(vty
, " LACP bypass: on\n");
2649 vty_out(vty
, " VNI Count: %d\n", listcount(es
->es_evi_list
));
2650 vty_out(vty
, " Remote VNI Count: %d\n",
2651 es
->remote_es_evi_cnt
);
2652 vty_out(vty
, " VRF Count: %d\n", listcount(es
->es_vrf_list
));
2653 vty_out(vty
, " MACIP EVI Path Count: %d\n",
2654 listcount(es
->macip_evi_path_list
));
2655 vty_out(vty
, " MACIP Global Path Count: %d\n",
2656 listcount(es
->macip_global_path_list
));
2657 vty_out(vty
, " Inconsistent VNI VTEP Count: %d\n",
2658 es
->incons_evi_vtep_cnt
);
2659 if (es
->inconsistencies
) {
2660 incons_str
[0] = '\0';
2661 if (es
->inconsistencies
& BGP_EVPNES_INCONS_VTEP_LIST
)
2662 strlcat(incons_str
, "vni-vtep-mismatch",
2663 sizeof(incons_str
));
2665 strlcpy(incons_str
, "-", sizeof(incons_str
));
2667 vty_out(vty
, " Inconsistencies: %s\n",
2669 if (listcount(es
->es_frag_list
)) {
2670 vty_out(vty
, " Fragments:\n");
2671 bgp_evpn_es_frag_show_detail(vty
, es
);
2673 if (listcount(es
->es_vtep_list
)) {
2674 vty_out(vty
, " VTEPs:\n");
2675 bgp_evpn_es_vteps_show_detail(vty
, es
);
2681 /* Display all ESs */
2682 void bgp_evpn_es_show(struct vty
*vty
, bool uj
, bool detail
)
2684 struct bgp_evpn_es
*es
;
2685 json_object
*json_array
= NULL
;
2686 json_object
*json
= NULL
;
2689 /* create an array of ESs */
2690 json_array
= json_object_new_array();
2694 "ES Flags: B - bypass, L local, R remote, I inconsistent\n");
2696 "VTEP Flags: E ESR/Type-4, A active nexthop\n");
2698 "%-30s %-5s %-21s %-8s %s\n",
2699 "ESI", "Flags", "RD", "#VNIs", "VTEPs");
2703 RB_FOREACH(es
, bgp_es_rb_head
, &bgp_mh_info
->es_rb_tree
) {
2705 /* create a separate json object for each ES */
2706 json
= json_object_new_object();
2708 bgp_evpn_es_show_entry_detail(vty
, es
, json
);
2710 bgp_evpn_es_show_entry(vty
, es
, json
);
2711 /* add ES to the json array */
2713 json_object_array_add(json_array
, json
);
2716 /* print the array of json-ESs */
2718 vty_json(vty
, json_array
);
2721 /* Display specific ES */
2722 void bgp_evpn_es_show_esi(struct vty
*vty
, esi_t
*esi
, bool uj
)
2724 struct bgp_evpn_es
*es
;
2725 json_object
*json
= NULL
;
2728 json
= json_object_new_object();
2730 es
= bgp_evpn_es_find(esi
);
2732 bgp_evpn_es_show_entry_detail(vty
, es
, json
);
2735 vty_out(vty
, "ESI not found\n");
2739 vty_json(vty
, json
);
2742 /*****************************************************************************/
2743 /* Ethernet Segment to VRF association -
2744 * 1. Each ES-EVI entry is associated with a tenant VRF. This associaton
2745 * triggers the creation of an ES-VRF entry.
2746 * 2. The ES-VRF entry is maintained for the purpose of L3-NHG creation
2747 * 3. Type-2/MAC-IP routes are imported into a tenant VRF and programmed as
2748 * a /32 or host route entry in the dataplane. If the destination of
2749 * the host route is a remote-ES the route is programmed with the
2750 * corresponding (keyed in by {vrf,ES-id}) L3-NHG.
2751 * 4. The reason for this indirection (route->L3-NHG, L3-NHG->list-of-VTEPs)
2752 * is to avoid route updates to the dplane when a remote-ES link flaps i.e.
2753 * instead of updating all the dependent routes the NHG's contents are updated.
2754 * This reduces the amount of datplane updates (nhg updates vs. route updates)
2755 * allowing for a faster failover.
2757 * XXX - can the L3 SVI index change without change in vpn->bgp_vrf
2758 * association? If yes we need to handle that by updating all the L3 NHGs
2761 /******************************** L3 NHG management *************************/
2762 static void bgp_evpn_l3nhg_zebra_add_v4_or_v6(struct bgp_evpn_es_vrf
*es_vrf
,
2765 uint32_t nhg_id
= v4_nhg
? es_vrf
->nhg_id
: es_vrf
->v6_nhg_id
;
2766 struct bgp_evpn_es
*es
= es_vrf
->es
;
2767 struct listnode
*node
;
2768 struct bgp_evpn_es_vtep
*es_vtep
;
2770 struct zapi_nexthop
*api_nh
;
2771 struct zapi_nhg api_nhg
= {};
2773 /* Skip installation of L3-NHG if host routes used */
2777 if (BGP_DEBUG(evpn_mh
, EVPN_MH_ES
))
2778 zlog_debug("es %s vrf %u %s nhg %u to zebra", es
->esi_str
,
2779 es_vrf
->bgp_vrf
->vrf_id
,
2780 v4_nhg
? "v4_nhg" : "v6_nhg", nhg_id
);
2782 frrtrace(4, frr_bgp
, evpn_mh_nhg_zsend
, true, v4_nhg
, nhg_id
, es_vrf
);
2784 /* only the gateway ip changes for each NH. rest of the params
2787 memset(&nh
, 0, sizeof(nh
));
2788 nh
.vrf_id
= es_vrf
->bgp_vrf
->vrf_id
;
2789 nh
.flags
= NEXTHOP_FLAG_ONLINK
;
2790 nh
.ifindex
= es_vrf
->bgp_vrf
->l3vni_svi_ifindex
;
2793 v4_nhg
? NEXTHOP_TYPE_IPV4_IFINDEX
: NEXTHOP_TYPE_IPV6_IFINDEX
;
2795 api_nhg
.id
= nhg_id
;
2796 for (ALL_LIST_ELEMENTS_RO(es
->es_vtep_list
, node
, es_vtep
)) {
2797 if (!CHECK_FLAG(es_vtep
->flags
, BGP_EVPNES_VTEP_ACTIVE
))
2800 /* Don't overrun the zapi buffer. */
2801 if (api_nhg
.nexthop_num
== MULTIPATH_NUM
)
2804 /* overwrite the gw */
2806 nh
.gate
.ipv4
= es_vtep
->vtep_ip
;
2808 ipv4_to_ipv4_mapped_ipv6(&nh
.gate
.ipv6
,
2811 /* convert to zapi format */
2812 api_nh
= &api_nhg
.nexthops
[api_nhg
.nexthop_num
];
2813 zapi_nexthop_from_nexthop(api_nh
, &nh
);
2815 ++api_nhg
.nexthop_num
;
2816 if (BGP_DEBUG(evpn_mh
, EVPN_MH_ES
))
2817 zlog_debug("nhg %u vtep %pI4 l3-svi %d", api_nhg
.id
,
2819 es_vrf
->bgp_vrf
->l3vni_svi_ifindex
);
2821 frrtrace(3, frr_bgp
, evpn_mh_nh_zsend
, nhg_id
, es_vtep
, es_vrf
);
2824 if (!api_nhg
.nexthop_num
)
2827 zclient_nhg_send(zclient
, ZEBRA_NHG_ADD
, &api_nhg
);
2830 static bool bgp_evpn_l3nhg_zebra_ok(struct bgp_evpn_es_vrf
*es_vrf
)
2832 if (!bgp_mh_info
->host_routes_use_l3nhg
)
2836 if (!zclient
|| zclient
->sock
< 0)
2842 static void bgp_evpn_l3nhg_zebra_add(struct bgp_evpn_es_vrf
*es_vrf
)
2844 if (!bgp_evpn_l3nhg_zebra_ok(es_vrf
))
2847 bgp_evpn_l3nhg_zebra_add_v4_or_v6(es_vrf
, true /*v4_nhg*/);
2848 bgp_evpn_l3nhg_zebra_add_v4_or_v6(es_vrf
, false /*v4_nhg*/);
2851 static void bgp_evpn_l3nhg_zebra_del_v4_or_v6(struct bgp_evpn_es_vrf
*es_vrf
,
2854 struct zapi_nhg api_nhg
= {};
2856 api_nhg
.id
= v4_nhg
? es_vrf
->nhg_id
: es_vrf
->v6_nhg_id
;
2858 /* Skip installation of L3-NHG if host routes used */
2862 if (BGP_DEBUG(evpn_mh
, EVPN_MH_ES
))
2863 zlog_debug("es %s vrf %u %s nhg %u to zebra",
2864 es_vrf
->es
->esi_str
, es_vrf
->bgp_vrf
->vrf_id
,
2865 v4_nhg
? "v4_nhg" : "v6_nhg", api_nhg
.id
);
2868 frrtrace(4, frr_bgp
, evpn_mh_nhg_zsend
, false, v4_nhg
, api_nhg
.id
,
2871 zclient_nhg_send(zclient
, ZEBRA_NHG_DEL
, &api_nhg
);
2874 static void bgp_evpn_l3nhg_zebra_del(struct bgp_evpn_es_vrf
*es_vrf
)
2876 if (!bgp_evpn_l3nhg_zebra_ok(es_vrf
))
2879 bgp_evpn_l3nhg_zebra_del_v4_or_v6(es_vrf
, true /*v4_nhg*/);
2880 bgp_evpn_l3nhg_zebra_del_v4_or_v6(es_vrf
, false /*v4_nhg*/);
2883 static void bgp_evpn_l3nhg_deactivate(struct bgp_evpn_es_vrf
*es_vrf
)
2885 if (!(es_vrf
->flags
& BGP_EVPNES_VRF_NHG_ACTIVE
))
2888 if (BGP_DEBUG(evpn_mh
, EVPN_MH_ES
))
2889 zlog_debug("es %s vrf %u nhg %u de-activate",
2890 es_vrf
->es
->esi_str
, es_vrf
->bgp_vrf
->vrf_id
,
2892 bgp_evpn_l3nhg_zebra_del(es_vrf
);
2893 es_vrf
->flags
&= ~BGP_EVPNES_VRF_NHG_ACTIVE
;
2894 /* MAC-IPs can now be installed via the L3NHG */
2895 bgp_evpn_es_path_update_on_es_vrf_chg(es_vrf
, "l3nhg-deactivate");
2898 static void bgp_evpn_l3nhg_activate(struct bgp_evpn_es_vrf
*es_vrf
, bool update
)
2900 if (!bgp_evpn_es_get_active_vtep_cnt(es_vrf
->es
)) {
2901 bgp_evpn_l3nhg_deactivate(es_vrf
);
2905 if (es_vrf
->flags
& BGP_EVPNES_VRF_NHG_ACTIVE
) {
2909 if (BGP_DEBUG(evpn_mh
, EVPN_MH_ES
))
2910 zlog_debug("es %s vrf %u nhg %u activate",
2911 es_vrf
->es
->esi_str
, es_vrf
->bgp_vrf
->vrf_id
,
2913 es_vrf
->flags
|= BGP_EVPNES_VRF_NHG_ACTIVE
;
2914 /* MAC-IPs can now be installed via the L3NHG */
2915 bgp_evpn_es_path_update_on_es_vrf_chg(es_vrf
, "l3nhg_activate");
2918 bgp_evpn_l3nhg_zebra_add(es_vrf
);
2921 /* when a VTEP is activated or de-activated against an ES associated
2922 * VRFs' NHG needs to be updated
2924 static void bgp_evpn_l3nhg_update_on_vtep_chg(struct bgp_evpn_es
*es
)
2926 struct bgp_evpn_es_vrf
*es_vrf
;
2927 struct listnode
*es_vrf_node
;
2929 if (BGP_DEBUG(evpn_mh
, EVPN_MH_ES
))
2930 zlog_debug("es %s nhg update on vtep chg", es
->esi_str
);
2932 for (ALL_LIST_ELEMENTS_RO(es
->es_vrf_list
, es_vrf_node
, es_vrf
))
2933 bgp_evpn_l3nhg_activate(es_vrf
, true /* update */);
2936 /* compare ES-IDs for the ES-VRF RB tree maintained per-VRF */
2937 static int bgp_es_vrf_rb_cmp(const struct bgp_evpn_es_vrf
*es_vrf1
,
2938 const struct bgp_evpn_es_vrf
*es_vrf2
)
2940 return memcmp(&es_vrf1
->es
->esi
, &es_vrf2
->es
->esi
, ESI_BYTES
);
2942 RB_GENERATE(bgp_es_vrf_rb_head
, bgp_evpn_es_vrf
, rb_node
, bgp_es_vrf_rb_cmp
);
2944 /* Initialize the ES tables maintained per-tenant vrf */
2945 void bgp_evpn_vrf_es_init(struct bgp
*bgp_vrf
)
2947 /* Initialize the ES-VRF RB tree */
2948 RB_INIT(bgp_es_vrf_rb_head
, &bgp_vrf
->es_vrf_rb_tree
);
2951 /* find the ES-VRF in the per-VRF RB tree */
2952 static struct bgp_evpn_es_vrf
*bgp_evpn_es_vrf_find(struct bgp_evpn_es
*es
,
2953 struct bgp
*bgp_vrf
)
2955 struct bgp_evpn_es_vrf es_vrf
;
2959 return RB_FIND(bgp_es_vrf_rb_head
, &bgp_vrf
->es_vrf_rb_tree
, &es_vrf
);
2962 /* allocate a new ES-VRF and setup L3NHG for it */
2963 static struct bgp_evpn_es_vrf
*bgp_evpn_es_vrf_create(struct bgp_evpn_es
*es
,
2964 struct bgp
*bgp_vrf
)
2966 struct bgp_evpn_es_vrf
*es_vrf
;
2968 es_vrf
= XCALLOC(MTYPE_BGP_EVPN_ES_VRF
, sizeof(*es_vrf
));
2971 es_vrf
->bgp_vrf
= bgp_vrf
;
2973 /* insert into the VRF-ESI rb tree */
2974 RB_INSERT(bgp_es_vrf_rb_head
, &bgp_vrf
->es_vrf_rb_tree
, es_vrf
);
2976 /* add to the ES's VRF list */
2977 listnode_init(&es_vrf
->es_listnode
, es_vrf
);
2978 listnode_add(es
->es_vrf_list
, &es_vrf
->es_listnode
);
2980 /* setup the L3 NHG id for the ES */
2981 es_vrf
->nhg_id
= bgp_l3nhg_id_alloc();
2982 es_vrf
->v6_nhg_id
= bgp_l3nhg_id_alloc();
2984 if (BGP_DEBUG(evpn_mh
, EVPN_MH_ES
))
2985 zlog_debug("es %s vrf %u nhg %u v6_nhg %d create", es
->esi_str
,
2986 bgp_vrf
->vrf_id
, es_vrf
->nhg_id
, es_vrf
->v6_nhg_id
);
2987 bgp_evpn_l3nhg_activate(es_vrf
, false /* update */);
2989 /* update paths in the VRF that may already be associated with
2990 * this destination ES
2992 bgp_evpn_es_path_update_on_es_vrf_chg(es_vrf
, "es-vrf-create");
2997 /* remove the L3-NHG associated with the ES-VRF and free it */
2998 static void bgp_evpn_es_vrf_delete(struct bgp_evpn_es_vrf
*es_vrf
)
3000 struct bgp_evpn_es
*es
= es_vrf
->es
;
3001 struct bgp
*bgp_vrf
= es_vrf
->bgp_vrf
;
3003 if (BGP_DEBUG(evpn_mh
, EVPN_MH_ES
))
3004 zlog_debug("es %s vrf %u nhg %u delete", es
->esi_str
,
3005 bgp_vrf
->vrf_id
, es_vrf
->nhg_id
);
3007 /* Remove the NHG resources */
3008 bgp_evpn_l3nhg_deactivate(es_vrf
);
3010 bgp_l3nhg_id_free(es_vrf
->nhg_id
);
3012 if (es_vrf
->v6_nhg_id
)
3013 bgp_l3nhg_id_free(es_vrf
->v6_nhg_id
);
3014 es_vrf
->v6_nhg_id
= 0;
3016 /* remove from the ES's VRF list */
3017 list_delete_node(es
->es_vrf_list
, &es_vrf
->es_listnode
);
3019 /* remove from the VRF-ESI rb tree */
3020 RB_REMOVE(bgp_es_vrf_rb_head
, &bgp_vrf
->es_vrf_rb_tree
, es_vrf
);
3022 /* update paths in the VRF that may already be associated with
3023 * this destination ES
3025 bgp_evpn_es_path_update_on_es_vrf_chg(es_vrf
, "es-vrf-delete");
3027 XFREE(MTYPE_BGP_EVPN_ES_VRF
, es_vrf
);
3030 /* deref and delete if there are no references */
3031 void bgp_evpn_es_vrf_deref(struct bgp_evpn_es_evi
*es_evi
)
3033 struct bgp_evpn_es_vrf
*es_vrf
= es_evi
->es_vrf
;
3038 if (BGP_DEBUG(evpn_mh
, EVPN_MH_ES
))
3039 zlog_debug("es-evi %s vni %u vrf %u de-ref",
3040 es_evi
->es
->esi_str
, es_evi
->vpn
->vni
,
3041 es_vrf
->bgp_vrf
->vrf_id
);
3043 es_evi
->es_vrf
= NULL
;
3044 if (es_vrf
->ref_cnt
)
3047 if (!es_vrf
->ref_cnt
)
3048 bgp_evpn_es_vrf_delete(es_vrf
);
3051 /* find or create and reference */
3052 void bgp_evpn_es_vrf_ref(struct bgp_evpn_es_evi
*es_evi
, struct bgp
*bgp_vrf
)
3054 struct bgp_evpn_es
*es
= es_evi
->es
;
3055 struct bgp_evpn_es_vrf
*es_vrf
= es_evi
->es_vrf
;
3056 struct bgp
*old_bgp_vrf
= NULL
;
3059 old_bgp_vrf
= es_vrf
->bgp_vrf
;
3061 if (old_bgp_vrf
== bgp_vrf
)
3064 /* deref the old ES-VRF */
3065 bgp_evpn_es_vrf_deref(es_evi
);
3070 if (BGP_DEBUG(evpn_mh
, EVPN_MH_ES
))
3071 zlog_debug("es-evi %s vni %u vrf %u ref", es_evi
->es
->esi_str
,
3072 es_evi
->vpn
->vni
, bgp_vrf
->vrf_id
);
3074 /* find-create the new ES-VRF */
3075 es_vrf
= bgp_evpn_es_vrf_find(es
, bgp_vrf
);
3077 es_vrf
= bgp_evpn_es_vrf_create(es
, bgp_vrf
);
3079 es_evi
->es_vrf
= es_vrf
;
3083 /* When the L2-VNI is associated with a L3-VNI/VRF update all the
3084 * associated ES-EVI entries
3086 void bgp_evpn_es_evi_vrf_deref(struct bgpevpn
*vpn
)
3088 struct bgp_evpn_es_evi
*es_evi
;
3090 if (BGP_DEBUG(evpn_mh
, EVPN_MH_ES
))
3091 zlog_debug("es-vrf de-ref for vni %u", vpn
->vni
);
3093 RB_FOREACH (es_evi
, bgp_es_evi_rb_head
, &vpn
->es_evi_rb_tree
)
3094 bgp_evpn_es_vrf_deref(es_evi
);
3096 void bgp_evpn_es_evi_vrf_ref(struct bgpevpn
*vpn
)
3098 struct bgp_evpn_es_evi
*es_evi
;
3100 if (BGP_DEBUG(evpn_mh
, EVPN_MH_ES
))
3101 zlog_debug("es-vrf ref for vni %u", vpn
->vni
);
3103 RB_FOREACH (es_evi
, bgp_es_evi_rb_head
, &vpn
->es_evi_rb_tree
)
3104 bgp_evpn_es_vrf_ref(es_evi
, vpn
->bgp_vrf
);
3107 /* 1. If ES-VRF is not present install the host route with the exploded/flat
3109 * 2. If ES-VRF is present -
3110 * - if L3NHG has not been activated for the ES-VRF (this could be because
3111 * all the PEs attached to the VRF are down) do not install the route
3113 * - if L3NHG has been activated install the route via that L3NHG
3115 void bgp_evpn_es_vrf_use_nhg(struct bgp
*bgp_vrf
, esi_t
*esi
, bool *use_l3nhg
,
3116 bool *is_l3nhg_active
,
3117 struct bgp_evpn_es_vrf
**es_vrf_p
)
3119 struct bgp_evpn_es
*es
;
3120 struct bgp_evpn_es_vrf
*es_vrf
;
3122 if (!bgp_mh_info
->host_routes_use_l3nhg
)
3125 es
= bgp_evpn_es_find(esi
);
3129 es_vrf
= bgp_evpn_es_vrf_find(es
, bgp_vrf
);
3134 if (es_vrf
->flags
& BGP_EVPNES_VRF_NHG_ACTIVE
)
3135 *is_l3nhg_active
= true;
3140 /* returns false if legacy-exploded mp needs to be used for route install */
3141 bool bgp_evpn_path_es_use_nhg(struct bgp
*bgp_vrf
, struct bgp_path_info
*pi
,
3145 struct bgp_evpn_es_vrf
*es_vrf
= NULL
;
3146 struct bgp_path_info
*parent_pi
;
3147 struct bgp_node
*rn
;
3148 struct prefix_evpn
*evp
;
3149 struct bgp_path_info
*mpinfo
;
3150 bool use_l3nhg
= false;
3151 bool is_l3nhg_active
= false;
3155 /* we don't support NHG for routes leaked from another VRF yet */
3156 if (pi
->extra
&& pi
->extra
->bgp_orig
)
3159 parent_pi
= get_route_parent_evpn(pi
);
3163 rn
= parent_pi
->net
;
3167 evp
= (struct prefix_evpn
*)&rn
->p
;
3168 if (evp
->prefix
.route_type
!= BGP_EVPN_MAC_IP_ROUTE
)
3171 /* non-es path, use legacy-exploded multipath */
3172 esi
= bgp_evpn_attr_get_esi(parent_pi
->attr
);
3173 if (!memcmp(esi
, zero_esi
, sizeof(*esi
)))
3176 /* we don't support NHG for d-vni yet */
3177 if (bgp_evpn_mpath_has_dvni(bgp_vrf
, pi
))
3180 bgp_evpn_es_vrf_use_nhg(bgp_vrf
, esi
, &use_l3nhg
, &is_l3nhg_active
,
3183 /* L3NHG support is disabled, use legacy-exploded multipath */
3187 /* if the NHG has not been installed we cannot install the route yet,
3188 * return a 0-NHG to indicate that
3190 if (!is_l3nhg_active
)
3193 /* this needs to be set the v6NHG if v6route */
3194 if (is_evpn_prefix_ipaddr_v6(evp
))
3195 *nhg_p
= es_vrf
->v6_nhg_id
;
3197 *nhg_p
= es_vrf
->nhg_id
;
3199 for (mpinfo
= bgp_path_info_mpath_next(pi
); mpinfo
;
3200 mpinfo
= bgp_path_info_mpath_next(mpinfo
)) {
3201 /* if any of the paths have a different ESI we can't use
3202 * the NHG associated with the ES. fallback to legacy-exploded
3205 if (memcmp(esi
, bgp_evpn_attr_get_esi(mpinfo
->attr
),
3213 static void bgp_evpn_es_vrf_show_entry(struct vty
*vty
,
3214 struct bgp_evpn_es_vrf
*es_vrf
,
3217 struct bgp_evpn_es
*es
= es_vrf
->es
;
3218 struct bgp
*bgp_vrf
= es_vrf
->bgp_vrf
;
3221 json_object
*json_types
;
3223 json_object_string_add(json
, "esi", es
->esi_str
);
3224 json_object_string_add(json
, "vrf", bgp_vrf
->name_pretty
);
3226 if (es_vrf
->flags
& (BGP_EVPNES_VRF_NHG_ACTIVE
)) {
3227 json_types
= json_object_new_array();
3228 if (es_vrf
->flags
& BGP_EVPNES_VRF_NHG_ACTIVE
)
3229 json_array_string_add(json_types
, "active");
3230 json_object_object_add(json
, "flags", json_types
);
3233 json_object_int_add(json
, "ipv4NHG", es_vrf
->nhg_id
);
3234 json_object_int_add(json
, "ipv6NHG", es_vrf
->v6_nhg_id
);
3235 json_object_int_add(json
, "refCount", es_vrf
->ref_cnt
);
3239 flags_str
[0] = '\0';
3240 if (es_vrf
->flags
& BGP_EVPNES_VRF_NHG_ACTIVE
)
3241 strlcat(flags_str
, "A", sizeof(flags_str
));
3243 vty_out(vty
, "%-30s %-15s %-5s %-8u %-8u %u\n", es
->esi_str
,
3244 bgp_vrf
->name_pretty
, flags_str
, es_vrf
->nhg_id
,
3245 es_vrf
->v6_nhg_id
, es_vrf
->ref_cnt
);
3249 static void bgp_evpn_es_vrf_show_es(struct vty
*vty
, json_object
*json_array
,
3250 struct bgp_evpn_es
*es
)
3252 json_object
*json
= NULL
;
3253 struct listnode
*es_vrf_node
;
3254 struct bgp_evpn_es_vrf
*es_vrf
;
3256 for (ALL_LIST_ELEMENTS_RO(es
->es_vrf_list
, es_vrf_node
, es_vrf
)) {
3257 /* create a separate json object for each ES-VRF */
3259 json
= json_object_new_object();
3260 bgp_evpn_es_vrf_show_entry(vty
, es_vrf
, json
);
3261 /* add ES-VRF to the json array */
3263 json_object_array_add(json_array
, json
);
3267 /* Display all ES VRFs */
3268 void bgp_evpn_es_vrf_show(struct vty
*vty
, bool uj
, struct bgp_evpn_es
*es
)
3270 json_object
*json_array
= NULL
;
3273 /* create an array of ESs */
3274 json_array
= json_object_new_array();
3276 vty_out(vty
, "ES-VRF Flags: A Active\n");
3277 vty_out(vty
, "%-30s %-15s %-5s %-8s %-8s %s\n", "ESI", "VRF",
3278 "Flags", "IPv4-NHG", "IPv6-NHG", "Ref");
3282 bgp_evpn_es_vrf_show_es(vty
, json_array
, es
);
3284 RB_FOREACH (es
, bgp_es_rb_head
, &bgp_mh_info
->es_rb_tree
)
3285 bgp_evpn_es_vrf_show_es(vty
, json_array
, es
);
3288 /* print the array of json-ESs */
3290 vty_json(vty
, json_array
);
3293 /* Display specific ES VRF */
3294 void bgp_evpn_es_vrf_show_esi(struct vty
*vty
, esi_t
*esi
, bool uj
)
3296 struct bgp_evpn_es
*es
;
3298 es
= bgp_evpn_es_find(esi
);
3300 bgp_evpn_es_vrf_show(vty
, uj
, es
);
3303 vty_out(vty
, "ESI not found\n");
3307 /*****************************************************************************/
3308 /* Ethernet Segment to EVI association -
3309 * 1. The ES-EVI entry is maintained as a RB tree per L2-VNI
3310 * (bgpevpn->es_evi_rb_tree).
3311 * 2. Each local ES-EVI entry is rxed from zebra and then used by BGP to
3312 * advertises an EAD-EVI (Type-1 EVPN) route
3313 * 3. The remote ES-EVI is created when a bgp_evpn_es_evi_vtep references
3317 /* A list of remote VTEPs is maintained for each ES-EVI. This list includes -
3318 * 1. VTEPs for which we have imported the EAD-per-ES Type1 route
3319 * 2. VTEPs for which we have imported the EAD-per-EVI Type1 route
3320 * VTEPs for which both routes have been rxed are activated. Activation
3321 * creates a NHG in the parent ES.
3323 static int bgp_evpn_es_evi_vtep_cmp(void *p1
, void *p2
)
3325 const struct bgp_evpn_es_evi_vtep
*evi_vtep1
= p1
;
3326 const struct bgp_evpn_es_evi_vtep
*evi_vtep2
= p2
;
3328 return evi_vtep1
->vtep_ip
.s_addr
- evi_vtep2
->vtep_ip
.s_addr
;
3331 static struct bgp_evpn_es_evi_vtep
*bgp_evpn_es_evi_vtep_new(
3332 struct bgp_evpn_es_evi
*es_evi
, struct in_addr vtep_ip
)
3334 struct bgp_evpn_es_evi_vtep
*evi_vtep
;
3336 evi_vtep
= XCALLOC(MTYPE_BGP_EVPN_ES_EVI_VTEP
, sizeof(*evi_vtep
));
3338 evi_vtep
->es_evi
= es_evi
;
3339 evi_vtep
->vtep_ip
.s_addr
= vtep_ip
.s_addr
;
3340 listnode_init(&evi_vtep
->es_evi_listnode
, evi_vtep
);
3341 listnode_add_sort(es_evi
->es_evi_vtep_list
, &evi_vtep
->es_evi_listnode
);
3346 static void bgp_evpn_es_evi_vtep_free(struct bgp_evpn_es_evi_vtep
*evi_vtep
)
3348 struct bgp_evpn_es_evi
*es_evi
= evi_vtep
->es_evi
;
3350 if (evi_vtep
->flags
& (BGP_EVPN_EVI_VTEP_EAD
))
3351 /* as long as there is some reference we can't free it */
3354 list_delete_node(es_evi
->es_evi_vtep_list
, &evi_vtep
->es_evi_listnode
);
3355 XFREE(MTYPE_BGP_EVPN_ES_EVI_VTEP
, evi_vtep
);
3358 /* check if VTEP is already part of the list */
3359 static struct bgp_evpn_es_evi_vtep
*bgp_evpn_es_evi_vtep_find(
3360 struct bgp_evpn_es_evi
*es_evi
, struct in_addr vtep_ip
)
3362 struct listnode
*node
= NULL
;
3363 struct bgp_evpn_es_evi_vtep
*evi_vtep
;
3365 for (ALL_LIST_ELEMENTS_RO(es_evi
->es_evi_vtep_list
, node
, evi_vtep
)) {
3366 if (evi_vtep
->vtep_ip
.s_addr
== vtep_ip
.s_addr
)
3372 /* A VTEP can be added as "active" attach to an ES if EAD-per-ES and
3373 * EAD-per-EVI routes are rxed from it.
3375 static void bgp_evpn_es_evi_vtep_re_eval_active(struct bgp
*bgp
,
3376 struct bgp_evpn_es_evi_vtep
*evi_vtep
)
3380 uint32_t ead_activity_flags
;
3382 old_active
= CHECK_FLAG(evi_vtep
->flags
, BGP_EVPN_EVI_VTEP_ACTIVE
);
3384 if (bgp_mh_info
->ead_evi_rx
)
3385 /* Both EAD-per-ES and EAD-per-EVI routes must be rxed from a PE
3386 * before it can be activated.
3388 ead_activity_flags
= BGP_EVPN_EVI_VTEP_EAD
;
3390 /* EAD-per-ES is sufficent to activate the PE */
3391 ead_activity_flags
= BGP_EVPN_EVI_VTEP_EAD_PER_ES
;
3393 if ((evi_vtep
->flags
& ead_activity_flags
) == ead_activity_flags
)
3394 SET_FLAG(evi_vtep
->flags
, BGP_EVPN_EVI_VTEP_ACTIVE
);
3396 UNSET_FLAG(evi_vtep
->flags
, BGP_EVPN_EVI_VTEP_ACTIVE
);
3398 new_active
= CHECK_FLAG(evi_vtep
->flags
, BGP_EVPN_EVI_VTEP_ACTIVE
);
3400 if (old_active
== new_active
)
3403 if (BGP_DEBUG(evpn_mh
, EVPN_MH_ES
))
3404 zlog_debug("es %s evi %u vtep %pI4 %s",
3405 evi_vtep
->es_evi
->es
->esi_str
,
3406 evi_vtep
->es_evi
->vpn
->vni
, &evi_vtep
->vtep_ip
,
3407 new_active
? "active" : "inactive");
3409 /* add VTEP to parent es */
3411 evi_vtep
->es_vtep
= bgp_evpn_es_vtep_add(
3412 bgp
, evi_vtep
->es_evi
->es
, evi_vtep
->vtep_ip
,
3413 false /*esr*/, 0, 0);
3415 if (evi_vtep
->es_vtep
) {
3416 bgp_evpn_es_vtep_do_del(bgp
, evi_vtep
->es_vtep
,
3418 evi_vtep
->es_vtep
= NULL
;
3421 /* queue up the parent es for background consistency checks */
3422 bgp_evpn_es_cons_checks_pend_add(evi_vtep
->es_evi
->es
);
3425 static void bgp_evpn_es_evi_vtep_add(struct bgp
*bgp
,
3426 struct bgp_evpn_es_evi
*es_evi
, struct in_addr vtep_ip
,
3429 struct bgp_evpn_es_evi_vtep
*evi_vtep
;
3431 evi_vtep
= bgp_evpn_es_evi_vtep_find(es_evi
, vtep_ip
);
3434 evi_vtep
= bgp_evpn_es_evi_vtep_new(es_evi
, vtep_ip
);
3436 if (BGP_DEBUG(evpn_mh
, EVPN_MH_ES
))
3437 zlog_debug("add es %s evi %u vtep %pI4 %s",
3438 evi_vtep
->es_evi
->es
->esi_str
,
3439 evi_vtep
->es_evi
->vpn
->vni
, &evi_vtep
->vtep_ip
,
3440 ead_es
? "ead_es" : "ead_evi");
3443 SET_FLAG(evi_vtep
->flags
, BGP_EVPN_EVI_VTEP_EAD_PER_ES
);
3445 SET_FLAG(evi_vtep
->flags
, BGP_EVPN_EVI_VTEP_EAD_PER_EVI
);
3447 bgp_evpn_es_evi_vtep_re_eval_active(bgp
, evi_vtep
);
3450 static void bgp_evpn_es_evi_vtep_del(struct bgp
*bgp
,
3451 struct bgp_evpn_es_evi
*es_evi
, struct in_addr vtep_ip
,
3454 struct bgp_evpn_es_evi_vtep
*evi_vtep
;
3456 evi_vtep
= bgp_evpn_es_evi_vtep_find(es_evi
, vtep_ip
);
3460 if (BGP_DEBUG(evpn_mh
, EVPN_MH_ES
))
3461 zlog_debug("del es %s evi %u vtep %pI4 %s",
3462 evi_vtep
->es_evi
->es
->esi_str
,
3463 evi_vtep
->es_evi
->vpn
->vni
, &evi_vtep
->vtep_ip
,
3464 ead_es
? "ead_es" : "ead_evi");
3467 UNSET_FLAG(evi_vtep
->flags
, BGP_EVPN_EVI_VTEP_EAD_PER_ES
);
3469 UNSET_FLAG(evi_vtep
->flags
, BGP_EVPN_EVI_VTEP_EAD_PER_EVI
);
3471 bgp_evpn_es_evi_vtep_re_eval_active(bgp
, evi_vtep
);
3472 bgp_evpn_es_evi_vtep_free(evi_vtep
);
3475 /* compare ES-IDs for the ES-EVI RB tree maintained per-VNI */
3476 static int bgp_es_evi_rb_cmp(const struct bgp_evpn_es_evi
*es_evi1
,
3477 const struct bgp_evpn_es_evi
*es_evi2
)
3479 return memcmp(&es_evi1
->es
->esi
, &es_evi2
->es
->esi
, ESI_BYTES
);
3481 RB_GENERATE(bgp_es_evi_rb_head
, bgp_evpn_es_evi
, rb_node
, bgp_es_evi_rb_cmp
);
3483 /* find the ES-EVI in the per-L2-VNI RB tree */
3484 static struct bgp_evpn_es_evi
*bgp_evpn_es_evi_find(struct bgp_evpn_es
*es
,
3485 struct bgpevpn
*vpn
)
3487 struct bgp_evpn_es_evi es_evi
;
3491 return RB_FIND(bgp_es_evi_rb_head
, &vpn
->es_evi_rb_tree
, &es_evi
);
3494 /* allocate a new ES-EVI and insert it into the per-L2-VNI and per-ES
3497 static struct bgp_evpn_es_evi
*bgp_evpn_es_evi_new(struct bgp_evpn_es
*es
,
3498 struct bgpevpn
*vpn
)
3500 struct bgp_evpn_es_evi
*es_evi
;
3502 es_evi
= XCALLOC(MTYPE_BGP_EVPN_ES_EVI
, sizeof(*es_evi
));
3507 /* Initialise the VTEP list */
3508 es_evi
->es_evi_vtep_list
= list_new();
3509 listset_app_node_mem(es_evi
->es_evi_vtep_list
);
3510 es_evi
->es_evi_vtep_list
->cmp
= bgp_evpn_es_evi_vtep_cmp
;
3512 /* insert into the VNI-ESI rb tree */
3513 RB_INSERT(bgp_es_evi_rb_head
, &vpn
->es_evi_rb_tree
, es_evi
);
3515 /* add to the ES's VNI list */
3516 listnode_init(&es_evi
->es_listnode
, es_evi
);
3517 listnode_add(es
->es_evi_list
, &es_evi
->es_listnode
);
3519 bgp_evpn_es_vrf_ref(es_evi
, vpn
->bgp_vrf
);
3524 /* remove the ES-EVI from the per-L2-VNI and per-ES tables and free
3527 static struct bgp_evpn_es_evi
*
3528 bgp_evpn_es_evi_free(struct bgp_evpn_es_evi
*es_evi
)
3530 struct bgp_evpn_es
*es
= es_evi
->es
;
3531 struct bgpevpn
*vpn
= es_evi
->vpn
;
3533 /* cannot free the element as long as there is a local or remote
3536 if (es_evi
->flags
& (BGP_EVPNES_EVI_LOCAL
| BGP_EVPNES_EVI_REMOTE
))
3538 bgp_evpn_es_frag_evi_del(es_evi
, false);
3539 bgp_evpn_es_vrf_deref(es_evi
);
3541 /* remove from the ES's VNI list */
3542 list_delete_node(es
->es_evi_list
, &es_evi
->es_listnode
);
3544 /* remove from the VNI-ESI rb tree */
3545 RB_REMOVE(bgp_es_evi_rb_head
, &vpn
->es_evi_rb_tree
, es_evi
);
3547 /* free the VTEP list */
3548 list_delete(&es_evi
->es_evi_vtep_list
);
3550 /* remove from the VNI-ESI rb tree */
3551 XFREE(MTYPE_BGP_EVPN_ES_EVI
, es_evi
);
3556 /* init local info associated with the ES-EVI */
3557 static void bgp_evpn_es_evi_local_info_set(struct bgp_evpn_es_evi
*es_evi
)
3559 struct bgpevpn
*vpn
= es_evi
->vpn
;
3561 if (CHECK_FLAG(es_evi
->flags
, BGP_EVPNES_EVI_LOCAL
))
3564 SET_FLAG(es_evi
->flags
, BGP_EVPNES_EVI_LOCAL
);
3565 listnode_init(&es_evi
->l2vni_listnode
, es_evi
);
3566 listnode_add(vpn
->local_es_evi_list
, &es_evi
->l2vni_listnode
);
3567 bgp_evpn_es_frag_evi_add(es_evi
);
3570 /* clear any local info associated with the ES-EVI */
3571 static struct bgp_evpn_es_evi
*
3572 bgp_evpn_es_evi_local_info_clear(struct bgp_evpn_es_evi
*es_evi
)
3574 struct bgpevpn
*vpn
= es_evi
->vpn
;
3576 UNSET_FLAG(es_evi
->flags
, BGP_EVPNES_EVI_LOCAL
);
3577 list_delete_node(vpn
->local_es_evi_list
, &es_evi
->l2vni_listnode
);
3579 return bgp_evpn_es_evi_free(es_evi
);
3582 /* eval remote info associated with the ES */
3583 static void bgp_evpn_es_evi_remote_info_re_eval(struct bgp_evpn_es_evi
*es_evi
)
3585 struct bgp_evpn_es
*es
= es_evi
->es
;
3587 /* if there are remote VTEPs the ES-EVI is classified as "remote" */
3588 if (listcount(es_evi
->es_evi_vtep_list
)) {
3589 if (!CHECK_FLAG(es_evi
->flags
, BGP_EVPNES_EVI_REMOTE
)) {
3590 SET_FLAG(es_evi
->flags
, BGP_EVPNES_EVI_REMOTE
);
3591 ++es
->remote_es_evi_cnt
;
3592 /* set remote on the parent es */
3593 bgp_evpn_es_remote_info_re_eval(es
);
3596 if (CHECK_FLAG(es_evi
->flags
, BGP_EVPNES_EVI_REMOTE
)) {
3597 UNSET_FLAG(es_evi
->flags
, BGP_EVPNES_EVI_REMOTE
);
3598 if (es
->remote_es_evi_cnt
)
3599 --es
->remote_es_evi_cnt
;
3600 bgp_evpn_es_evi_free(es_evi
);
3601 /* check if "remote" can be cleared from the
3604 bgp_evpn_es_remote_info_re_eval(es
);
3609 static struct bgp_evpn_es_evi
*
3610 bgp_evpn_local_es_evi_do_del(struct bgp_evpn_es_evi
*es_evi
)
3612 struct prefix_evpn p
;
3613 struct bgp_evpn_es
*es
= es_evi
->es
;
3616 if (!CHECK_FLAG(es_evi
->flags
, BGP_EVPNES_EVI_LOCAL
))
3619 if (BGP_DEBUG(evpn_mh
, EVPN_MH_ES
))
3620 zlog_debug("del local es %s evi %u",
3621 es_evi
->es
->esi_str
,
3624 bgp
= bgp_get_evpn();
3626 /* remove the es_evi from the es_frag before sending the update */
3627 bgp_evpn_es_frag_evi_del(es_evi
, true);
3629 /* update EAD-ES with new list of VNIs */
3630 if (bgp_evpn_local_es_is_active(es
))
3631 bgp_evpn_ead_es_route_update(bgp
, es
);
3633 /* withdraw and delete EAD-EVI */
3634 if (CHECK_FLAG(es
->flags
, BGP_EVPNES_ADV_EVI
)) {
3635 build_evpn_type1_prefix(&p
, BGP_EVPN_AD_EVI_ETH_TAG
,
3636 &es
->esi
, es
->originator_ip
);
3637 if (bgp_evpn_ead_evi_route_delete(bgp
, es
, es_evi
->vpn
,
3639 flog_err(EC_BGP_EVPN_ROUTE_DELETE
,
3640 "%u: EAD-EVI route deletion failure for ESI %s VNI %u",
3641 bgp
->vrf_id
, es
->esi_str
,
3646 return bgp_evpn_es_evi_local_info_clear(es_evi
);
3649 int bgp_evpn_local_es_evi_del(struct bgp
*bgp
, esi_t
*esi
, vni_t vni
)
3651 struct bgpevpn
*vpn
;
3652 struct bgp_evpn_es
*es
;
3653 struct bgp_evpn_es_evi
*es_evi
;
3654 char buf
[ESI_STR_LEN
];
3656 es
= bgp_evpn_es_find(esi
);
3660 "%u: Failed to deref VNI %d from ESI %s; ES not present",
3662 esi_to_str(esi
, buf
, sizeof(buf
)));
3666 vpn
= bgp_evpn_lookup_vni(bgp
, vni
);
3670 "%u: Failed to deref VNI %d from ESI %s; VNI not present",
3671 bgp
->vrf_id
, vni
, es
->esi_str
);
3675 es_evi
= bgp_evpn_es_evi_find(es
, vpn
);
3679 "%u: Failed to deref VNI %d from ESI %s; ES-VNI not present",
3680 bgp
->vrf_id
, vni
, es
->esi_str
);
3684 bgp_evpn_local_es_evi_do_del(es_evi
);
3688 /* Create ES-EVI and advertise the corresponding EAD routes */
3689 int bgp_evpn_local_es_evi_add(struct bgp
*bgp
, esi_t
*esi
, vni_t vni
)
3691 struct bgpevpn
*vpn
;
3692 struct prefix_evpn p
;
3693 struct bgp_evpn_es
*es
;
3694 struct bgp_evpn_es_evi
*es_evi
;
3695 char buf
[ESI_STR_LEN
];
3697 es
= bgp_evpn_es_find(esi
);
3701 "%u: Failed to associate VNI %d with ESI %s; ES not present",
3703 esi_to_str(esi
, buf
, sizeof(buf
)));
3707 vpn
= bgp_evpn_lookup_vni(bgp
, vni
);
3711 "%u: Failed to associate VNI %d with ESI %s; VNI not present",
3712 bgp
->vrf_id
, vni
, es
->esi_str
);
3716 if (BGP_DEBUG(evpn_mh
, EVPN_MH_ES
))
3717 zlog_debug("add local es %s evi %u",
3720 es_evi
= bgp_evpn_es_evi_find(es
, vpn
);
3723 if (CHECK_FLAG(es_evi
->flags
, BGP_EVPNES_EVI_LOCAL
))
3727 es_evi
= bgp_evpn_es_evi_new(es
, vpn
);
3729 bgp_evpn_es_evi_local_info_set(es_evi
);
3731 /* generate an EAD-EVI for this new VNI */
3732 if (CHECK_FLAG(es
->flags
, BGP_EVPNES_ADV_EVI
)) {
3733 build_evpn_type1_prefix(&p
, BGP_EVPN_AD_EVI_ETH_TAG
, &es
->esi
,
3735 bgp_evpn_ead_evi_route_update(bgp
, es
, vpn
, &p
);
3739 if (bgp_evpn_local_es_is_active(es
))
3740 bgp_evpn_ead_es_route_update(bgp
, es
);
3745 /* Add remote ES-EVI entry. This is actually the remote VTEP add and the
3746 * ES-EVI is implicity created on first VTEP's reference.
3748 int bgp_evpn_remote_es_evi_add(struct bgp
*bgp
, struct bgpevpn
*vpn
,
3749 const struct prefix_evpn
*p
)
3751 char buf
[ESI_STR_LEN
];
3752 struct bgp_evpn_es
*es
;
3753 struct bgp_evpn_es_evi
*es_evi
;
3755 const esi_t
*esi
= &p
->prefix
.ead_addr
.esi
;
3758 /* local EAD-ES need not be sent back to zebra */
3761 if (BGP_DEBUG(evpn_mh
, EVPN_MH_ES
))
3762 zlog_debug("add remote %s es %s evi %u vtep %pI4",
3763 p
->prefix
.ead_addr
.eth_tag
? "ead-es" : "ead-evi",
3764 esi_to_str(esi
, buf
, sizeof(buf
)), vpn
->vni
,
3765 &p
->prefix
.ead_addr
.ip
.ipaddr_v4
);
3767 es
= bgp_evpn_es_find(esi
);
3769 es
= bgp_evpn_es_new(bgp
, esi
);
3771 es_evi
= bgp_evpn_es_evi_find(es
, vpn
);
3773 es_evi
= bgp_evpn_es_evi_new(es
, vpn
);
3775 ead_es
= !!p
->prefix
.ead_addr
.eth_tag
;
3776 bgp_evpn_es_evi_vtep_add(bgp
, es_evi
, p
->prefix
.ead_addr
.ip
.ipaddr_v4
,
3779 bgp_evpn_es_evi_remote_info_re_eval(es_evi
);
3783 /* A remote VTEP has withdrawn. The es-evi-vtep will be deleted and the
3784 * parent es-evi freed up implicitly in last VTEP's deref.
3786 int bgp_evpn_remote_es_evi_del(struct bgp
*bgp
, struct bgpevpn
*vpn
,
3787 const struct prefix_evpn
*p
)
3789 char buf
[ESI_STR_LEN
];
3790 struct bgp_evpn_es
*es
;
3791 struct bgp_evpn_es_evi
*es_evi
;
3795 /* local EAD-ES need not be sent back to zebra */
3798 if (BGP_DEBUG(evpn_mh
, EVPN_MH_ES
))
3800 "del remote %s es %s evi %u vtep %pI4",
3801 p
->prefix
.ead_addr
.eth_tag
? "ead-es" : "ead-evi",
3802 esi_to_str(&p
->prefix
.ead_addr
.esi
, buf
, sizeof(buf
)),
3803 vpn
->vni
, &p
->prefix
.ead_addr
.ip
.ipaddr_v4
);
3805 es
= bgp_evpn_es_find(&p
->prefix
.ead_addr
.esi
);
3807 if (BGP_DEBUG(evpn_mh
, EVPN_MH_ES
))
3809 "del remote %s es %s evi %u vtep %pI4, NO es",
3810 p
->prefix
.ead_addr
.eth_tag
? "ead-es"
3812 esi_to_str(&p
->prefix
.ead_addr
.esi
, buf
,
3814 vpn
->vni
, &p
->prefix
.ead_addr
.ip
.ipaddr_v4
);
3817 es_evi
= bgp_evpn_es_evi_find(es
, vpn
);
3819 if (BGP_DEBUG(evpn_mh
, EVPN_MH_ES
))
3821 "del remote %s es %s evi %u vtep %pI4, NO es-evi",
3822 p
->prefix
.ead_addr
.eth_tag
? "ead-es"
3824 esi_to_str(&p
->prefix
.ead_addr
.esi
, buf
,
3827 &p
->prefix
.ead_addr
.ip
.ipaddr_v4
);
3831 ead_es
= !!p
->prefix
.ead_addr
.eth_tag
;
3832 bgp_evpn_es_evi_vtep_del(bgp
, es_evi
, p
->prefix
.ead_addr
.ip
.ipaddr_v4
,
3834 bgp_evpn_es_evi_remote_info_re_eval(es_evi
);
3838 /* If a VNI is being deleted we need to force del all remote VTEPs */
3839 static void bgp_evpn_remote_es_evi_flush(struct bgp_evpn_es_evi
*es_evi
)
3841 struct listnode
*node
= NULL
;
3842 struct listnode
*nnode
= NULL
;
3843 struct bgp_evpn_es_evi_vtep
*evi_vtep
;
3846 bgp
= bgp_get_evpn();
3850 /* delete all VTEPs */
3851 for (ALL_LIST_ELEMENTS(es_evi
->es_evi_vtep_list
, node
, nnode
,
3853 evi_vtep
->flags
&= ~(BGP_EVPN_EVI_VTEP_EAD_PER_ES
3854 | BGP_EVPN_EVI_VTEP_EAD_PER_EVI
);
3855 bgp_evpn_es_evi_vtep_re_eval_active(bgp
, evi_vtep
);
3856 bgp_evpn_es_evi_vtep_free(evi_vtep
);
3858 /* delete the EVI */
3859 bgp_evpn_es_evi_remote_info_re_eval(es_evi
);
3862 /* Initialize the ES tables maintained per-L2_VNI */
3863 void bgp_evpn_vni_es_init(struct bgpevpn
*vpn
)
3865 /* Initialize the ES-EVI RB tree */
3866 RB_INIT(bgp_es_evi_rb_head
, &vpn
->es_evi_rb_tree
);
3868 /* Initialize the local list maintained for quick walks by type */
3869 vpn
->local_es_evi_list
= list_new();
3870 listset_app_node_mem(vpn
->local_es_evi_list
);
3873 /* Cleanup the ES info maintained per-L2_VNI */
3874 void bgp_evpn_vni_es_cleanup(struct bgpevpn
*vpn
)
3876 struct bgp_evpn_es_evi
*es_evi
;
3877 struct bgp_evpn_es_evi
*es_evi_next
;
3879 RB_FOREACH_SAFE(es_evi
, bgp_es_evi_rb_head
,
3880 &vpn
->es_evi_rb_tree
, es_evi_next
) {
3881 es_evi
= bgp_evpn_local_es_evi_do_del(es_evi
);
3883 bgp_evpn_remote_es_evi_flush(es_evi
);
3886 list_delete(&vpn
->local_es_evi_list
);
3889 static char *bgp_evpn_es_evi_vteps_str(char *vtep_str
,
3890 struct bgp_evpn_es_evi
*es_evi
,
3891 uint8_t vtep_str_size
)
3893 char vtep_flag_str
[BGP_EVPN_FLAG_STR_SZ
];
3894 struct listnode
*node
;
3895 struct bgp_evpn_es_evi_vtep
*evi_vtep
;
3897 char ip_buf
[INET_ADDRSTRLEN
];
3900 for (ALL_LIST_ELEMENTS_RO(es_evi
->es_evi_vtep_list
, node
, evi_vtep
)) {
3901 vtep_flag_str
[0] = '\0';
3902 if (evi_vtep
->flags
& BGP_EVPN_EVI_VTEP_EAD_PER_ES
)
3903 strlcat(vtep_flag_str
, "E", sizeof(vtep_flag_str
));
3904 if (evi_vtep
->flags
& BGP_EVPN_EVI_VTEP_EAD_PER_EVI
)
3905 strlcat(vtep_flag_str
, "V", sizeof(vtep_flag_str
));
3907 if (!strnlen(vtep_flag_str
, sizeof(vtep_flag_str
)))
3908 strlcpy(vtep_flag_str
, "-", sizeof(vtep_flag_str
));
3912 strlcat(vtep_str
, ",", vtep_str_size
);
3914 inet_ntop(AF_INET
, &evi_vtep
->vtep_ip
, ip_buf
,
3917 strlcat(vtep_str
, "(", vtep_str_size
);
3918 strlcat(vtep_str
, vtep_flag_str
, vtep_str_size
);
3919 strlcat(vtep_str
, ")", vtep_str_size
);
3925 static void bgp_evpn_es_evi_json_vtep_fill(json_object
*json_vteps
,
3926 struct bgp_evpn_es_evi_vtep
*evi_vtep
)
3928 json_object
*json_vtep_entry
;
3929 json_object
*json_flags
;
3931 json_vtep_entry
= json_object_new_object();
3933 json_object_string_addf(json_vtep_entry
, "vtep_ip", "%pI4",
3934 &evi_vtep
->vtep_ip
);
3935 if (evi_vtep
->flags
& (BGP_EVPN_EVI_VTEP_EAD_PER_ES
|
3936 BGP_EVPN_EVI_VTEP_EAD_PER_EVI
)) {
3937 json_flags
= json_object_new_array();
3938 if (evi_vtep
->flags
& BGP_EVPN_EVI_VTEP_EAD_PER_ES
)
3939 json_array_string_add(json_flags
, "ead-per-es");
3940 if (evi_vtep
->flags
& BGP_EVPN_EVI_VTEP_EAD_PER_EVI
)
3941 json_array_string_add(json_flags
, "ead-per-evi");
3942 json_object_object_add(json_vtep_entry
,
3943 "flags", json_flags
);
3946 json_object_array_add(json_vteps
,
3950 static void bgp_evpn_es_evi_show_entry(struct vty
*vty
,
3951 struct bgp_evpn_es_evi
*es_evi
, json_object
*json
)
3953 struct listnode
*node
;
3954 struct bgp_evpn_es_evi_vtep
*evi_vtep
;
3957 json_object
*json_vteps
;
3958 json_object
*json_types
;
3960 json_object_string_add(json
, "esi", es_evi
->es
->esi_str
);
3961 json_object_int_add(json
, "vni", es_evi
->vpn
->vni
);
3963 if (es_evi
->flags
& (BGP_EVPNES_EVI_LOCAL
|
3964 BGP_EVPNES_EVI_REMOTE
)) {
3965 json_types
= json_object_new_array();
3966 if (es_evi
->flags
& BGP_EVPNES_EVI_LOCAL
)
3967 json_array_string_add(json_types
, "local");
3968 if (es_evi
->flags
& BGP_EVPNES_EVI_REMOTE
)
3969 json_array_string_add(json_types
, "remote");
3970 json_object_object_add(json
, "type", json_types
);
3973 if (listcount(es_evi
->es_evi_vtep_list
)) {
3974 json_vteps
= json_object_new_array();
3975 for (ALL_LIST_ELEMENTS_RO(es_evi
->es_evi_vtep_list
,
3977 bgp_evpn_es_evi_json_vtep_fill(json_vteps
,
3980 json_object_object_add(json
, "vteps", json_vteps
);
3984 char vtep_str
[ES_VTEP_LIST_STR_SZ
+ BGP_EVPN_VTEPS_FLAG_STR_SZ
];
3987 if (es_evi
->flags
& BGP_EVPNES_EVI_LOCAL
)
3988 strlcat(type_str
, "L", sizeof(type_str
));
3989 if (es_evi
->flags
& BGP_EVPNES_EVI_REMOTE
)
3990 strlcat(type_str
, "R", sizeof(type_str
));
3991 if (es_evi
->flags
& BGP_EVPNES_EVI_INCONS_VTEP_LIST
)
3992 strlcat(type_str
, "I", sizeof(type_str
));
3994 bgp_evpn_es_evi_vteps_str(vtep_str
, es_evi
, sizeof(vtep_str
));
3996 vty_out(vty
, "%-8d %-30s %-5s %s\n",
3997 es_evi
->vpn
->vni
, es_evi
->es
->esi_str
,
3998 type_str
, vtep_str
);
4002 static void bgp_evpn_es_evi_show_entry_detail(struct vty
*vty
,
4003 struct bgp_evpn_es_evi
*es_evi
, json_object
*json
)
4006 json_object
*json_flags
;
4008 /* Add the "brief" info first */
4009 bgp_evpn_es_evi_show_entry(vty
, es_evi
, json
);
4010 if (es_evi
->es_frag
)
4011 json_object_string_addf(json
, "esFragmentRd", "%pRD",
4012 &es_evi
->es_frag
->prd
);
4013 if (es_evi
->flags
& BGP_EVPNES_EVI_INCONS_VTEP_LIST
) {
4014 json_flags
= json_object_new_array();
4015 json_array_string_add(json_flags
, "es-vtep-mismatch");
4016 json_object_object_add(json
, "flags", json_flags
);
4019 char vtep_str
[ES_VTEP_LIST_STR_SZ
+ BGP_EVPN_VTEPS_FLAG_STR_SZ
];
4023 if (es_evi
->flags
& BGP_EVPNES_EVI_LOCAL
)
4024 strlcat(type_str
, "L", sizeof(type_str
));
4025 if (es_evi
->flags
& BGP_EVPNES_EVI_REMOTE
)
4026 strlcat(type_str
, "R", sizeof(type_str
));
4028 bgp_evpn_es_evi_vteps_str(vtep_str
, es_evi
, sizeof(vtep_str
));
4029 if (!strlen(vtep_str
))
4030 strlcpy(vtep_str
, "-", sizeof(type_str
));
4032 vty_out(vty
, "VNI: %d ESI: %s\n",
4033 es_evi
->vpn
->vni
, es_evi
->es
->esi_str
);
4034 vty_out(vty
, " Type: %s\n", type_str
);
4035 if (es_evi
->es_frag
)
4036 vty_out(vty
, " ES fragment RD: %pRD\n",
4037 &es_evi
->es_frag
->prd
);
4038 vty_out(vty
, " Inconsistencies: %s\n",
4039 (es_evi
->flags
& BGP_EVPNES_EVI_INCONS_VTEP_LIST
) ?
4040 "es-vtep-mismatch":"-");
4041 vty_out(vty
, " VTEPs: %s\n", vtep_str
);
4046 static void bgp_evpn_es_evi_show_one_vni(struct bgpevpn
*vpn
, struct vty
*vty
,
4047 json_object
*json_array
, bool detail
)
4049 struct bgp_evpn_es_evi
*es_evi
;
4050 json_object
*json
= NULL
;
4052 RB_FOREACH(es_evi
, bgp_es_evi_rb_head
, &vpn
->es_evi_rb_tree
) {
4054 /* create a separate json object for each ES */
4055 json
= json_object_new_object();
4057 bgp_evpn_es_evi_show_entry_detail(vty
, es_evi
, json
);
4059 bgp_evpn_es_evi_show_entry(vty
, es_evi
, json
);
4060 /* add ES to the json array */
4062 json_object_array_add(json_array
, json
);
4066 struct es_evi_show_ctx
{
4072 static void bgp_evpn_es_evi_show_one_vni_hash_cb(struct hash_bucket
*bucket
,
4075 struct bgpevpn
*vpn
= (struct bgpevpn
*)bucket
->data
;
4076 struct es_evi_show_ctx
*wctx
= (struct es_evi_show_ctx
*)ctxt
;
4078 bgp_evpn_es_evi_show_one_vni(vpn
, wctx
->vty
, wctx
->json
, wctx
->detail
);
4081 /* Display all ES EVIs */
4082 void bgp_evpn_es_evi_show(struct vty
*vty
, bool uj
, bool detail
)
4084 json_object
*json_array
= NULL
;
4085 struct es_evi_show_ctx wctx
;
4089 /* create an array of ES-EVIs */
4090 json_array
= json_object_new_array();
4094 wctx
.json
= json_array
;
4095 wctx
.detail
= detail
;
4097 bgp
= bgp_get_evpn();
4099 if (!json_array
&& !detail
) {
4100 vty_out(vty
, "Flags: L local, R remote, I inconsistent\n");
4101 vty_out(vty
, "VTEP-Flags: E EAD-per-ES, V EAD-per-EVI\n");
4102 vty_out(vty
, "%-8s %-30s %-5s %s\n",
4103 "VNI", "ESI", "Flags", "VTEPs");
4107 hash_iterate(bgp
->vnihash
,
4108 (void (*)(struct hash_bucket
*,
4109 void *))bgp_evpn_es_evi_show_one_vni_hash_cb
,
4112 vty_json(vty
, json_array
);
4115 /* Display specific ES EVI */
4116 void bgp_evpn_es_evi_show_vni(struct vty
*vty
, vni_t vni
,
4117 bool uj
, bool detail
)
4119 struct bgpevpn
*vpn
= NULL
;
4120 json_object
*json_array
= NULL
;
4124 /* create an array of ES-EVIs */
4125 json_array
= json_object_new_array();
4128 bgp
= bgp_get_evpn();
4130 vpn
= bgp_evpn_lookup_vni(bgp
, vni
);
4133 if (!json_array
&& !detail
) {
4134 vty_out(vty
, "Flags: L local, R remote, I inconsistent\n");
4135 vty_out(vty
, "VTEP-Flags: E EAD-per-ES, V EAD-per-EVI\n");
4136 vty_out(vty
, "%-8s %-30s %-5s %s\n",
4137 "VNI", "ESI", "Flags", "VTEPs");
4140 bgp_evpn_es_evi_show_one_vni(vpn
, vty
, json_array
, detail
);
4143 vty_out(vty
, "VNI not found\n");
4147 vty_json(vty
, json_array
);
4150 /*****************************************************************************
4151 * Ethernet Segment Consistency checks
4152 * Consistency checking is done to detect misconfig or mis-cabling. When
4153 * an inconsistency is detected it is simply logged (and displayed via
4154 * show commands) at this point. A more drastic action can be executed (based
4155 * on user config) in the future.
4157 static void bgp_evpn_es_cons_checks_timer_start(void)
4159 if (!bgp_mh_info
->consistency_checking
|| bgp_mh_info
->t_cons_check
)
4162 if (BGP_DEBUG(evpn_mh
, EVPN_MH_ES
))
4163 zlog_debug("periodic consistency checking started");
4165 thread_add_timer(bm
->master
, bgp_evpn_run_consistency_checks
, NULL
,
4166 BGP_EVPN_CONS_CHECK_INTERVAL
,
4167 &bgp_mh_info
->t_cons_check
);
4170 /* queue up the es for background consistency checks */
4171 static void bgp_evpn_es_cons_checks_pend_add(struct bgp_evpn_es
*es
)
4173 if (!bgp_mh_info
->consistency_checking
)
4174 /* consistency checking is not enabled */
4177 if (CHECK_FLAG(es
->flags
, BGP_EVPNES_CONS_CHECK_PEND
))
4178 /* already queued for consistency checking */
4181 /* start the periodic timer for consistency checks if it is not
4182 * already running */
4183 bgp_evpn_es_cons_checks_timer_start();
4185 SET_FLAG(es
->flags
, BGP_EVPNES_CONS_CHECK_PEND
);
4186 listnode_init(&es
->pend_es_listnode
, es
);
4187 listnode_add_after(bgp_mh_info
->pend_es_list
,
4188 listtail_unchecked(bgp_mh_info
->pend_es_list
),
4189 &es
->pend_es_listnode
);
4192 /* pull the ES from the consistency check list */
4193 static void bgp_evpn_es_cons_checks_pend_del(struct bgp_evpn_es
*es
)
4195 if (!CHECK_FLAG(es
->flags
, BGP_EVPNES_CONS_CHECK_PEND
))
4198 UNSET_FLAG(es
->flags
, BGP_EVPNES_CONS_CHECK_PEND
);
4199 list_delete_node(bgp_mh_info
->pend_es_list
,
4200 &es
->pend_es_listnode
);
4203 /* Number of active VTEPs associated with the ES-per-EVI */
4204 static uint32_t bgp_evpn_es_evi_get_active_vtep_cnt(
4205 struct bgp_evpn_es_evi
*es_evi
)
4207 struct bgp_evpn_es_evi_vtep
*evi_vtep
;
4208 struct listnode
*node
;
4209 uint32_t vtep_cnt
= 0;
4211 for (ALL_LIST_ELEMENTS_RO(es_evi
->es_evi_vtep_list
, node
, evi_vtep
)) {
4212 if (CHECK_FLAG(evi_vtep
->flags
, BGP_EVPN_EVI_VTEP_ACTIVE
))
4219 /* Number of active VTEPs associated with the ES */
4220 static uint32_t bgp_evpn_es_get_active_vtep_cnt(struct bgp_evpn_es
*es
)
4222 struct listnode
*node
;
4223 uint32_t vtep_cnt
= 0;
4224 struct bgp_evpn_es_vtep
*es_vtep
;
4226 for (ALL_LIST_ELEMENTS_RO(es
->es_vtep_list
, node
, es_vtep
)) {
4227 if (CHECK_FLAG(es_vtep
->flags
, BGP_EVPNES_VTEP_ACTIVE
))
4234 static struct bgp_evpn_es_vtep
*bgp_evpn_es_get_next_active_vtep(
4235 struct bgp_evpn_es
*es
, struct bgp_evpn_es_vtep
*es_vtep
)
4237 struct listnode
*node
;
4238 struct bgp_evpn_es_vtep
*next_es_vtep
;
4241 node
= listnextnode_unchecked(&es_vtep
->es_listnode
);
4243 node
= listhead(es
->es_vtep_list
);
4245 for (; node
; node
= listnextnode_unchecked(node
)) {
4246 next_es_vtep
= listgetdata(node
);
4247 if (CHECK_FLAG(next_es_vtep
->flags
, BGP_EVPNES_VTEP_ACTIVE
))
4248 return next_es_vtep
;
4254 static struct bgp_evpn_es_evi_vtep
*bgp_evpn_es_evi_get_next_active_vtep(
4255 struct bgp_evpn_es_evi
*es_evi
,
4256 struct bgp_evpn_es_evi_vtep
*evi_vtep
)
4258 struct listnode
*node
;
4259 struct bgp_evpn_es_evi_vtep
*next_evi_vtep
;
4262 node
= listnextnode_unchecked(&evi_vtep
->es_evi_listnode
);
4264 node
= listhead(es_evi
->es_evi_vtep_list
);
4266 for (; node
; node
= listnextnode_unchecked(node
)) {
4267 next_evi_vtep
= listgetdata(node
);
4268 if (CHECK_FLAG(next_evi_vtep
->flags
, BGP_EVPN_EVI_VTEP_ACTIVE
))
4269 return next_evi_vtep
;
4275 static void bgp_evpn_es_evi_set_inconsistent(struct bgp_evpn_es_evi
*es_evi
)
4277 if (!CHECK_FLAG(es_evi
->flags
, BGP_EVPNES_EVI_INCONS_VTEP_LIST
)) {
4278 if (BGP_DEBUG(evpn_mh
, EVPN_MH_ES
))
4279 zlog_debug("inconsistency detected - es %s evi %u vtep list mismatch",
4280 es_evi
->es
->esi_str
,
4282 SET_FLAG(es_evi
->flags
, BGP_EVPNES_EVI_INCONS_VTEP_LIST
);
4284 /* update parent ES with the incosistency setting */
4285 if (!es_evi
->es
->incons_evi_vtep_cnt
&&
4286 BGP_DEBUG(evpn_mh
, EVPN_MH_ES
))
4287 zlog_debug("inconsistency detected - es %s vtep list mismatch",
4288 es_evi
->es
->esi_str
);
4289 ++es_evi
->es
->incons_evi_vtep_cnt
;
4290 SET_FLAG(es_evi
->es
->inconsistencies
,
4291 BGP_EVPNES_INCONS_VTEP_LIST
);
4295 static uint32_t bgp_evpn_es_run_consistency_checks(struct bgp_evpn_es
*es
)
4298 int es_active_vtep_cnt
;
4299 int evi_active_vtep_cnt
;
4300 struct bgp_evpn_es_evi
*es_evi
;
4301 struct listnode
*evi_node
;
4302 struct bgp_evpn_es_vtep
*es_vtep
;
4303 struct bgp_evpn_es_evi_vtep
*evi_vtep
;
4305 /* reset the inconsistencies and re-evaluate */
4306 es
->incons_evi_vtep_cnt
= 0;
4307 es
->inconsistencies
= 0;
4309 es_active_vtep_cnt
= bgp_evpn_es_get_active_vtep_cnt(es
);
4310 for (ALL_LIST_ELEMENTS_RO(es
->es_evi_list
,
4311 evi_node
, es_evi
)) {
4314 /* reset the inconsistencies on the EVI and re-evaluate*/
4315 UNSET_FLAG(es_evi
->flags
, BGP_EVPNES_EVI_INCONS_VTEP_LIST
);
4317 evi_active_vtep_cnt
=
4318 bgp_evpn_es_evi_get_active_vtep_cnt(es_evi
);
4319 if (es_active_vtep_cnt
!= evi_active_vtep_cnt
) {
4320 bgp_evpn_es_evi_set_inconsistent(es_evi
);
4324 if (!es_active_vtep_cnt
)
4329 while ((es_vtep
= bgp_evpn_es_get_next_active_vtep(
4331 evi_vtep
= bgp_evpn_es_evi_get_next_active_vtep(es_evi
,
4334 bgp_evpn_es_evi_set_inconsistent(es_evi
);
4337 if (es_vtep
->vtep_ip
.s_addr
!=
4338 evi_vtep
->vtep_ip
.s_addr
) {
4339 /* inconsistency detected; set it and move
4342 bgp_evpn_es_evi_set_inconsistent(es_evi
);
4351 static void bgp_evpn_run_consistency_checks(struct thread
*t
)
4354 struct listnode
*node
;
4355 struct listnode
*nextnode
;
4356 struct bgp_evpn_es
*es
;
4358 for (ALL_LIST_ELEMENTS(bgp_mh_info
->pend_es_list
,
4359 node
, nextnode
, es
)) {
4361 /* run consistency checks on the ES and remove it from the
4364 proc_cnt
+= bgp_evpn_es_run_consistency_checks(es
);
4365 bgp_evpn_es_cons_checks_pend_del(es
);
4370 /* restart the timer */
4371 thread_add_timer(bm
->master
, bgp_evpn_run_consistency_checks
, NULL
,
4372 BGP_EVPN_CONS_CHECK_INTERVAL
,
4373 &bgp_mh_info
->t_cons_check
);
4376 /*****************************************************************************
4377 * EVPN-Nexthop and RMAC management: nexthops associated with Type-2 routes
4378 * that have an ES as destination are consolidated by BGP into a per-VRF
4379 * nh->rmac mapping which is sent to zebra. Zebra installs the nexthop
4380 * as a remote neigh/fdb entry with a dummy (type-1) prefix referencing it.
4382 * This handling is needed because Type-2 routes with ES as dest use NHG
4383 * that is setup using EAD routes (i.e. such NHGs do not include the
4385 ****************************************************************************/
4386 static void bgp_evpn_nh_zebra_update_send(struct bgp_evpn_nh
*nh
, bool add
)
4389 struct bgp
*bgp_vrf
= nh
->bgp_vrf
;
4392 if (!zclient
|| zclient
->sock
< 0)
4395 /* Don't try to register if Zebra doesn't know of this instance. */
4396 if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp_vrf
)) {
4397 if (BGP_DEBUG(zebra
, ZEBRA
))
4398 zlog_debug("No zebra instance, not %s remote nh %s",
4399 add
? "adding" : "deleting", nh
->nh_str
);
4406 zclient_create_header(
4407 s
, add
? ZEBRA_EVPN_REMOTE_NH_ADD
: ZEBRA_EVPN_REMOTE_NH_DEL
,
4409 stream_putl(s
, bgp_vrf
->vrf_id
);
4410 stream_put(s
, &nh
->ip
, sizeof(nh
->ip
));
4412 stream_put(s
, &nh
->rmac
, sizeof(nh
->rmac
));
4414 stream_putw_at(s
, 0, stream_get_endp(s
));
4416 if (BGP_DEBUG(evpn_mh
, EVPN_MH_ES
)) {
4418 zlog_debug("evpn vrf %s nh %s rmac %pEA add to zebra",
4419 nh
->bgp_vrf
->name_pretty
, nh
->nh_str
,
4421 else if (BGP_DEBUG(evpn_mh
, EVPN_MH_ES
))
4422 zlog_debug("evpn vrf %s nh %s del to zebra",
4423 nh
->bgp_vrf
->name_pretty
, nh
->nh_str
);
4426 frrtrace(2, frr_bgp
, evpn_mh_nh_rmac_zsend
, add
, nh
);
4428 zclient_send_message(zclient
);
4431 static void bgp_evpn_nh_zebra_update(struct bgp_evpn_nh
*nh
, bool add
)
4433 if (add
&& !is_zero_mac(&nh
->rmac
)) {
4434 nh
->flags
|= BGP_EVPN_NH_READY_FOR_ZEBRA
;
4435 bgp_evpn_nh_zebra_update_send(nh
, true);
4437 if (!(nh
->flags
& BGP_EVPN_NH_READY_FOR_ZEBRA
))
4439 nh
->flags
&= ~BGP_EVPN_NH_READY_FOR_ZEBRA
;
4440 bgp_evpn_nh_zebra_update_send(nh
, false);
4444 static void *bgp_evpn_nh_alloc(void *p
)
4446 struct bgp_evpn_nh
*tmp_n
= p
;
4447 struct bgp_evpn_nh
*n
;
4449 n
= XCALLOC(MTYPE_BGP_EVPN_NH
, sizeof(struct bgp_evpn_nh
));
4455 static struct bgp_evpn_nh
*bgp_evpn_nh_find(struct bgp
*bgp_vrf
,
4458 struct bgp_evpn_nh tmp
;
4459 struct bgp_evpn_nh
*n
;
4461 memset(&tmp
, 0, sizeof(tmp
));
4462 memcpy(&tmp
.ip
, ip
, sizeof(struct ipaddr
));
4463 n
= hash_lookup(bgp_vrf
->evpn_nh_table
, &tmp
);
4468 /* Add nexthop entry - implicitly created on first path reference */
4469 static struct bgp_evpn_nh
*bgp_evpn_nh_add(struct bgp
*bgp_vrf
,
4471 struct bgp_path_info
*pi
)
4473 struct bgp_evpn_nh tmp_n
;
4474 struct bgp_evpn_nh
*n
= NULL
;
4476 memset(&tmp_n
, 0, sizeof(tmp_n
));
4477 memcpy(&tmp_n
.ip
, ip
, sizeof(struct ipaddr
));
4478 n
= hash_get(bgp_vrf
->evpn_nh_table
, &tmp_n
, bgp_evpn_nh_alloc
);
4479 ipaddr2str(ip
, n
->nh_str
, sizeof(n
->nh_str
));
4480 n
->bgp_vrf
= bgp_vrf
;
4482 n
->pi_list
= list_new();
4483 listset_app_node_mem(n
->pi_list
);
4485 /* Setup ref_pi when the nh is created */
4486 if (CHECK_FLAG(pi
->flags
, BGP_PATH_VALID
) && pi
->attr
) {
4488 memcpy(&n
->rmac
, &pi
->attr
->rmac
, ETH_ALEN
);
4491 if (BGP_DEBUG(evpn_mh
, EVPN_MH_ES
))
4492 zlog_debug("evpn vrf %s nh %s rmac %pEA add",
4493 n
->bgp_vrf
->name_pretty
, n
->nh_str
, &n
->rmac
);
4494 bgp_evpn_nh_zebra_update(n
, true);
4498 /* Delete nexthop entry if there are no paths referencing it */
4499 static void bgp_evpn_nh_del(struct bgp_evpn_nh
*n
)
4501 struct bgp_evpn_nh
*tmp_n
;
4502 struct bgp
*bgp_vrf
= n
->bgp_vrf
;
4504 if (listcount(n
->pi_list
))
4507 if (BGP_DEBUG(evpn_mh
, EVPN_MH_ES
))
4508 zlog_debug("evpn vrf %s nh %s del to zebra",
4509 bgp_vrf
->name_pretty
, n
->nh_str
);
4511 bgp_evpn_nh_zebra_update(n
, false);
4512 list_delete(&n
->pi_list
);
4513 tmp_n
= hash_release(bgp_vrf
->evpn_nh_table
, n
);
4514 XFREE(MTYPE_BGP_EVPN_NH
, tmp_n
);
4517 static void hash_evpn_nh_free(struct bgp_evpn_nh
*ben
)
4519 XFREE(MTYPE_BGP_EVPN_NH
, ben
);
4522 static unsigned int bgp_evpn_nh_hash_keymake(const void *p
)
4524 const struct bgp_evpn_nh
*n
= p
;
4525 const struct ipaddr
*ip
= &n
->ip
;
4527 if (IS_IPADDR_V4(ip
))
4528 return jhash_1word(ip
->ipaddr_v4
.s_addr
, 0);
4530 return jhash2(ip
->ipaddr_v6
.s6_addr32
,
4531 array_size(ip
->ipaddr_v6
.s6_addr32
), 0);
4534 static bool bgp_evpn_nh_cmp(const void *p1
, const void *p2
)
4536 const struct bgp_evpn_nh
*n1
= p1
;
4537 const struct bgp_evpn_nh
*n2
= p2
;
4539 if (n1
== NULL
&& n2
== NULL
)
4542 if (n1
== NULL
|| n2
== NULL
)
4545 return (ipaddr_cmp(&n1
->ip
, &n2
->ip
) == 0);
4548 void bgp_evpn_nh_init(struct bgp
*bgp_vrf
)
4550 if (BGP_DEBUG(evpn_mh
, EVPN_MH_ES
))
4551 zlog_debug("evpn vrf %s nh init", bgp_vrf
->name_pretty
);
4552 bgp_vrf
->evpn_nh_table
= hash_create(
4553 bgp_evpn_nh_hash_keymake
, bgp_evpn_nh_cmp
, "BGP EVPN NH table");
4556 static void bgp_evpn_nh_flush_entry(struct bgp_evpn_nh
*nh
)
4558 struct listnode
*node
;
4559 struct listnode
*nnode
;
4560 struct bgp_path_evpn_nh_info
*nh_info
;
4562 if (BGP_DEBUG(evpn_mh
, EVPN_MH_ES
))
4563 zlog_debug("evpn vrf %s nh %s flush", nh
->bgp_vrf
->name_pretty
,
4566 /* force flush paths */
4567 for (ALL_LIST_ELEMENTS(nh
->pi_list
, node
, nnode
, nh_info
))
4568 bgp_evpn_path_nh_del(nh
->bgp_vrf
, nh_info
->pi
);
4571 static void bgp_evpn_nh_flush_cb(struct hash_bucket
*bucket
, void *ctxt
)
4573 struct bgp_evpn_nh
*nh
= (struct bgp_evpn_nh
*)bucket
->data
;
4575 bgp_evpn_nh_flush_entry(nh
);
4578 void bgp_evpn_nh_finish(struct bgp
*bgp_vrf
)
4580 if (BGP_DEBUG(evpn_mh
, EVPN_MH_ES
))
4581 zlog_debug("evpn vrf %s nh finish", bgp_vrf
->name_pretty
);
4583 bgp_vrf
->evpn_nh_table
,
4584 (void (*)(struct hash_bucket
*, void *))bgp_evpn_nh_flush_cb
,
4586 hash_clean(bgp_vrf
->evpn_nh_table
, (void (*)(void *))hash_evpn_nh_free
);
4587 hash_free(bgp_vrf
->evpn_nh_table
);
4588 bgp_vrf
->evpn_nh_table
= NULL
;
4591 static void bgp_evpn_nh_update_ref_pi(struct bgp_evpn_nh
*nh
)
4593 struct listnode
*node
;
4594 struct bgp_path_info
*pi
;
4595 struct bgp_path_evpn_nh_info
*nh_info
;
4600 for (ALL_LIST_ELEMENTS_RO(nh
->pi_list
, node
, nh_info
)) {
4602 if (!CHECK_FLAG(pi
->flags
, BGP_PATH_VALID
) || !pi
->attr
)
4605 if (BGP_DEBUG(evpn_mh
, EVPN_MH_ES
))
4606 zlog_debug("evpn vrf %s nh %s ref_pi update",
4607 nh
->bgp_vrf
->name_pretty
, nh
->nh_str
);
4609 /* If we have a new pi copy rmac from it and update
4610 * zebra if the new rmac is different
4612 if (memcmp(&nh
->rmac
, &nh
->ref_pi
->attr
->rmac
, ETH_ALEN
)) {
4613 memcpy(&nh
->rmac
, &nh
->ref_pi
->attr
->rmac
, ETH_ALEN
);
4614 bgp_evpn_nh_zebra_update(nh
, true);
4620 static void bgp_evpn_nh_clear_ref_pi(struct bgp_evpn_nh
*nh
,
4621 struct bgp_path_info
*pi
)
4623 if (nh
->ref_pi
!= pi
)
4626 if (BGP_DEBUG(evpn_mh
, EVPN_MH_ES
))
4627 zlog_debug("evpn vrf %s nh %s ref_pi clear",
4628 nh
->bgp_vrf
->name_pretty
, nh
->nh_str
);
4630 /* try to find another ref_pi */
4631 bgp_evpn_nh_update_ref_pi(nh
);
4632 /* couldn't find one - clear the old rmac and notify zebra */
4634 memset(&nh
->rmac
, 0, ETH_ALEN
);
4635 bgp_evpn_nh_zebra_update(nh
, true);
4639 static void bgp_evpn_path_nh_info_free(struct bgp_path_evpn_nh_info
*nh_info
)
4641 bgp_evpn_path_nh_unlink(nh_info
);
4642 XFREE(MTYPE_BGP_EVPN_PATH_NH_INFO
, nh_info
);
4645 static struct bgp_path_evpn_nh_info
*
4646 bgp_evpn_path_nh_info_new(struct bgp_path_info
*pi
)
4648 struct bgp_path_info_extra
*e
;
4649 struct bgp_path_mh_info
*mh_info
;
4650 struct bgp_path_evpn_nh_info
*nh_info
;
4652 e
= bgp_path_info_extra_get(pi
);
4654 /* If mh_info doesn't exist allocate it */
4655 mh_info
= e
->mh_info
;
4657 e
->mh_info
= mh_info
= XCALLOC(MTYPE_BGP_EVPN_PATH_MH_INFO
,
4658 sizeof(struct bgp_path_mh_info
));
4660 /* If nh_info doesn't exist allocate it */
4661 nh_info
= mh_info
->nh_info
;
4663 mh_info
->nh_info
= nh_info
=
4664 XCALLOC(MTYPE_BGP_EVPN_PATH_NH_INFO
,
4665 sizeof(struct bgp_path_evpn_nh_info
));
4672 static void bgp_evpn_path_nh_unlink(struct bgp_path_evpn_nh_info
*nh_info
)
4674 struct bgp_evpn_nh
*nh
= nh_info
->nh
;
4675 struct bgp_path_info
*pi
;
4676 char prefix_buf
[PREFIX_STRLEN
];
4682 if (BGP_DEBUG(evpn_mh
, EVPN_MH_RT
))
4683 zlog_debug("path %s unlinked from nh %s %s",
4684 pi
->net
? prefix2str(&pi
->net
->p
, prefix_buf
,
4687 nh
->bgp_vrf
->name_pretty
, nh
->nh_str
);
4689 list_delete_node(nh
->pi_list
, &nh_info
->nh_listnode
);
4693 /* check if the ref_pi need to be updated */
4694 bgp_evpn_nh_clear_ref_pi(nh
, pi
);
4696 /* if there are no other references against the nh it
4699 bgp_evpn_nh_del(nh
);
4701 /* Note we don't free the path nh_info on unlink; it will be freed up
4702 * along with the path.
4706 static void bgp_evpn_path_nh_link(struct bgp
*bgp_vrf
, struct bgp_path_info
*pi
)
4708 struct bgp_path_evpn_nh_info
*nh_info
;
4709 struct bgp_evpn_nh
*nh
;
4712 /* EVPN nexthop setup in bgp has been turned off */
4713 if (!bgp_mh_info
->bgp_evpn_nh_setup
)
4716 if (!bgp_vrf
->evpn_nh_table
) {
4717 if (BGP_DEBUG(evpn_mh
, EVPN_MH_RT
))
4718 zlog_debug("path %pFX linked to vrf %s failed",
4719 &pi
->net
->p
, bgp_vrf
->name_pretty
);
4723 nh_info
= (pi
->extra
&& pi
->extra
->mh_info
)
4724 ? pi
->extra
->mh_info
->nh_info
4727 /* if NHG is not being used for this path we don't need to manage the
4728 * nexthops in bgp (they are managed by zebra instead)
4730 if (!(pi
->attr
->es_flags
& ATTR_ES_L3_NHG_USE
)) {
4732 bgp_evpn_path_nh_unlink(nh_info
);
4736 /* setup nh_info against the path if it doesn't aleady exist */
4738 nh_info
= bgp_evpn_path_nh_info_new(pi
);
4740 /* find-create nh */
4741 memset(&ip
, 0, sizeof(ip
));
4742 if (pi
->net
->p
.family
== AF_INET6
) {
4744 memcpy(&ip
.ipaddr_v6
, &pi
->attr
->mp_nexthop_global
,
4745 sizeof(ip
.ipaddr_v6
));
4748 memcpy(&ip
.ipaddr_v4
, &pi
->attr
->nexthop
, sizeof(ip
.ipaddr_v4
));
4751 nh
= bgp_evpn_nh_find(bgp_vrf
, &ip
);
4753 nh
= bgp_evpn_nh_add(bgp_vrf
, &ip
, pi
);
4756 if (nh_info
->nh
== nh
) {
4757 /* Check if any of the paths are now valid */
4758 bgp_evpn_nh_update_ref_pi(nh
);
4762 /* unlink old nh if any */
4763 bgp_evpn_path_nh_unlink(nh_info
);
4765 if (BGP_DEBUG(evpn_mh
, EVPN_MH_RT
))
4766 zlog_debug("path %pFX linked to nh %s %s", &pi
->net
->p
,
4767 nh
->bgp_vrf
->name_pretty
, nh
->nh_str
);
4769 /* link mac-ip path to the new nh */
4771 listnode_init(&nh_info
->nh_listnode
, nh_info
);
4772 listnode_add(nh
->pi_list
, &nh_info
->nh_listnode
);
4773 /* If a new valid path got linked to the nh see if can get the rmac
4776 bgp_evpn_nh_update_ref_pi(nh
);
4777 if (BGP_DEBUG(evpn_mh
, EVPN_MH_ES
)) {
4780 "path %pFX linked to nh %s %s with no valid pi",
4781 &pi
->net
->p
, nh
->bgp_vrf
->name_pretty
,
4786 void bgp_evpn_path_nh_del(struct bgp
*bgp_vrf
, struct bgp_path_info
*pi
)
4788 struct bgp_path_evpn_nh_info
*nh_info
;
4790 nh_info
= (pi
->extra
&& pi
->extra
->mh_info
)
4791 ? pi
->extra
->mh_info
->nh_info
4797 bgp_evpn_path_nh_unlink(nh_info
);
4800 void bgp_evpn_path_nh_add(struct bgp
*bgp_vrf
, struct bgp_path_info
*pi
)
4802 bgp_evpn_path_nh_link(bgp_vrf
, pi
);
4805 static void bgp_evpn_nh_show_entry(struct bgp_evpn_nh
*nh
, struct vty
*vty
,
4806 json_object
*json_array
)
4808 json_object
*json
= NULL
;
4809 char mac_buf
[ETHER_ADDR_STRLEN
];
4810 char prefix_buf
[PREFIX_STRLEN
];
4813 /* create a separate json object for each ES */
4814 json
= json_object_new_object();
4816 prefix_mac2str(&nh
->rmac
, mac_buf
, sizeof(mac_buf
));
4817 if (nh
->ref_pi
&& nh
->ref_pi
->net
)
4818 prefix2str(&nh
->ref_pi
->net
->p
, prefix_buf
, sizeof(prefix_buf
));
4820 prefix_buf
[0] = '\0';
4822 json_object_string_add(json
, "vrf", nh
->bgp_vrf
->name_pretty
);
4823 json_object_string_add(json
, "ip", nh
->nh_str
);
4824 json_object_string_add(json
, "rmac", mac_buf
);
4825 json_object_string_add(json
, "basePath", prefix_buf
);
4826 json_object_int_add(json
, "pathCount", listcount(nh
->pi_list
));
4828 vty_out(vty
, "%-15s %-15s %-17s %-10d %s\n",
4829 nh
->bgp_vrf
->name_pretty
, nh
->nh_str
, mac_buf
,
4830 listcount(nh
->pi_list
), prefix_buf
);
4833 /* add ES to the json array */
4835 json_object_array_add(json_array
, json
);
4838 struct nh_show_ctx
{
4843 static void bgp_evpn_nh_show_hash_cb(struct hash_bucket
*bucket
, void *ctxt
)
4845 struct bgp_evpn_nh
*nh
= (struct bgp_evpn_nh
*)bucket
->data
;
4846 struct nh_show_ctx
*wctx
= (struct nh_show_ctx
*)ctxt
;
4848 bgp_evpn_nh_show_entry(nh
, wctx
->vty
, wctx
->json
);
4851 /* Display all evpn nexthops */
4852 void bgp_evpn_nh_show(struct vty
*vty
, bool uj
)
4854 json_object
*json_array
= NULL
;
4855 struct bgp
*bgp_vrf
;
4856 struct listnode
*node
;
4857 struct nh_show_ctx wctx
;
4860 /* create an array of nexthops */
4861 json_array
= json_object_new_array();
4863 vty_out(vty
, "%-15s %-15s %-17s %-10s %s\n", "VRF", "IP",
4864 "RMAC", "#Paths", "Base Path");
4868 wctx
.json
= json_array
;
4870 /* walk through all vrfs */
4871 for (ALL_LIST_ELEMENTS_RO(bm
->bgp
, node
, bgp_vrf
)) {
4872 hash_iterate(bgp_vrf
->evpn_nh_table
,
4873 (void (*)(struct hash_bucket
*,
4874 void *))bgp_evpn_nh_show_hash_cb
,
4878 /* print the array of json-ESs */
4880 vty_json(vty
, json_array
);
4883 /*****************************************************************************/
4884 void bgp_evpn_mh_init(void)
4886 bm
->mh_info
= XCALLOC(MTYPE_BGP_EVPN_MH_INFO
, sizeof(*bm
->mh_info
));
4888 /* setup ES tables */
4889 RB_INIT(bgp_es_rb_head
, &bgp_mh_info
->es_rb_tree
);
4891 bgp_mh_info
->local_es_list
= list_new();
4892 listset_app_node_mem(bgp_mh_info
->local_es_list
);
4893 /* list of ESs with pending processing */
4894 bgp_mh_info
->pend_es_list
= list_new();
4895 listset_app_node_mem(bgp_mh_info
->pend_es_list
);
4897 bgp_mh_info
->ead_evi_rx
= BGP_EVPN_MH_EAD_EVI_RX_DEF
;
4898 bgp_mh_info
->ead_evi_tx
= BGP_EVPN_MH_EAD_EVI_TX_DEF
;
4899 bgp_mh_info
->ead_es_export_rtl
= list_new();
4900 bgp_mh_info
->ead_es_export_rtl
->cmp
=
4901 (int (*)(void *, void *))bgp_evpn_route_target_cmp
;
4902 bgp_mh_info
->ead_es_export_rtl
->del
= bgp_evpn_xxport_delete_ecomm
;
4904 /* config knobs - XXX add cli to control it */
4905 bgp_mh_info
->ead_evi_adv_for_down_links
= true;
4906 bgp_mh_info
->consistency_checking
= true;
4907 bgp_mh_info
->host_routes_use_l3nhg
= BGP_EVPN_MH_USE_ES_L3NHG_DEF
;
4908 bgp_mh_info
->suppress_l3_ecomm_on_inactive_es
= true;
4909 bgp_mh_info
->bgp_evpn_nh_setup
= true;
4910 bgp_mh_info
->evi_per_es_frag
= BGP_EVPN_MAX_EVI_PER_ES_FRAG
;
4912 memset(&zero_esi_buf
, 0, sizeof(esi_t
));
4915 void bgp_evpn_mh_finish(void)
4917 struct bgp_evpn_es
*es
;
4918 struct bgp_evpn_es
*es_next
;
4920 if (BGP_DEBUG(evpn_mh
, EVPN_MH_RT
))
4921 zlog_debug("evpn mh finish");
4923 RB_FOREACH_SAFE (es
, bgp_es_rb_head
, &bgp_mh_info
->es_rb_tree
,
4925 bgp_evpn_es_local_info_clear(es
, true);
4927 if (bgp_mh_info
->t_cons_check
)
4928 THREAD_OFF(bgp_mh_info
->t_cons_check
);
4929 list_delete(&bgp_mh_info
->local_es_list
);
4930 list_delete(&bgp_mh_info
->pend_es_list
);
4931 list_delete(&bgp_mh_info
->ead_es_export_rtl
);
4933 XFREE(MTYPE_BGP_EVPN_MH_INFO
, bgp_mh_info
);
4936 /* This function is called when disable-ead-evi-rx knob flaps */
4937 void bgp_evpn_switch_ead_evi_rx(void)
4940 struct bgp_evpn_es
*es
;
4941 struct bgp_evpn_es_evi
*es_evi
;
4942 struct listnode
*evi_node
= NULL
;
4943 struct listnode
*evi_next
= NULL
;
4944 struct bgp_evpn_es_evi_vtep
*vtep
;
4945 struct listnode
*vtep_node
= NULL
;
4946 struct listnode
*vtep_next
= NULL
;
4948 bgp
= bgp_get_evpn();
4953 * Process all the remote es_evi_vteps and reevaluate if the es_evi_vtep
4956 RB_FOREACH(es
, bgp_es_rb_head
, &bgp_mh_info
->es_rb_tree
) {
4957 if (!CHECK_FLAG(es
->flags
, BGP_EVPNES_REMOTE
))
4960 for (ALL_LIST_ELEMENTS(es
->es_evi_list
, evi_node
, evi_next
,
4962 if (!CHECK_FLAG(es_evi
->flags
, BGP_EVPNES_EVI_REMOTE
))
4965 for (ALL_LIST_ELEMENTS(es_evi
->es_evi_vtep_list
,
4966 vtep_node
, vtep_next
, vtep
))
4967 bgp_evpn_es_evi_vtep_re_eval_active(bgp
, vtep
);