diff options
Diffstat (limited to 'bgpd/bgp_evpn_mh.c')
| -rw-r--r-- | bgpd/bgp_evpn_mh.c | 58 |
1 files changed, 51 insertions, 7 deletions
diff --git a/bgpd/bgp_evpn_mh.c b/bgpd/bgp_evpn_mh.c index 6467ff8a28..59bced6f93 100644 --- a/bgpd/bgp_evpn_mh.c +++ b/bgpd/bgp_evpn_mh.c @@ -347,11 +347,10 @@ static void bgp_evpn_es_route_del_all(struct bgp *bgp, struct bgp_evpn_es *es) * Note: vpn is applicable only to EAD-EVI routes (NULL for EAD-ES and * ESR). */ -static int bgp_evpn_mh_route_update(struct bgp *bgp, struct bgp_evpn_es *es, - struct bgpevpn *vpn, afi_t afi, safi_t safi, - struct bgp_dest *dest, struct attr *attr, - int add, struct bgp_path_info **ri, - int *route_changed) +int bgp_evpn_mh_route_update(struct bgp *bgp, struct bgp_evpn_es *es, + struct bgpevpn *vpn, afi_t afi, safi_t safi, + struct bgp_dest *dest, struct attr *attr, int add, + struct bgp_path_info **ri, int *route_changed) { struct bgp_path_info *tmp_pi = NULL; struct bgp_path_info *local_pi = NULL; /* local route entry if any */ @@ -384,7 +383,8 @@ static int bgp_evpn_mh_route_update(struct bgp *bgp, struct bgp_evpn_es *es, flog_err( EC_BGP_ES_INVALID, "%u ERROR: local es route for ESI: %s Vtep %pI4 also learnt from remote", - bgp->vrf_id, es->esi_str, &es->originator_ip); + bgp->vrf_id, es ? es->esi_str : "Null", + &es->originator_ip); return -1; } @@ -441,7 +441,7 @@ static int bgp_evpn_mh_route_update(struct bgp *bgp, struct bgp_evpn_es *es, if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) zlog_debug( "local ES %s vni %u route-type %s nexthop %pI4 updated", - es->esi_str, vpn ? vpn->vni : 0, + es ? es->esi_str : "Null", vpn ? vpn->vni : 0, evp->prefix.route_type == BGP_EVPN_ES_ROUTE ? "esr" : (vpn ? "ead-evi" : "ead-es"), @@ -524,6 +524,50 @@ static int bgp_evpn_mh_route_delete(struct bgp *bgp, struct bgp_evpn_es *es, return 0; } +/* + * This function is called when the VNI RD changes. + * Delete all EAD/EVI local routes for this VNI from the global routing table. + * These routes are scheduled for withdraw from peers. + */ +int delete_global_ead_evi_routes(struct bgp *bgp, struct bgpevpn *vpn) +{ + afi_t afi; + safi_t safi; + struct bgp_dest *rdrn, *rn; + struct bgp_table *table; + struct bgp_path_info *pi; + + afi = AFI_L2VPN; + safi = SAFI_EVPN; + + /* Find the RD node for the VNI in the global table */ + rdrn = bgp_node_lookup(bgp->rib[afi][safi], (struct prefix *)&vpn->prd); + if (rdrn && bgp_dest_has_bgp_path_info_data(rdrn)) { + table = bgp_dest_get_bgp_table_info(rdrn); + + /* + * Iterate over all the routes in this table and delete EAD/EVI + * routes + */ + for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) { + struct prefix_evpn *evp = (struct prefix_evpn *)&rn->p; + + if (evp->prefix.route_type != BGP_EVPN_AD_ROUTE) + continue; + + delete_evpn_route_entry(bgp, afi, safi, rn, &pi); + if (pi) + bgp_process(bgp, rn, afi, safi); + } + } + + /* Unlock RD node. */ + if (rdrn) + bgp_dest_unlock_node(rdrn); + + return 0; +} + /***************************************************************************** * Ethernet Segment (Type-4) Routes * ESRs are used for DF election. Currently service-carving described in |