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bgpd: withdraw fib entry on appropriate table identifier

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There are cases where the table identifier is set on a bgp entry, mainly
due to route-map, and associate fib entry needs to be removed.
This change encompasses also the route-map reconfiguration that leads to
removing the previous entry, whereas bgp update had been triggered (
this happens when software inbound reconfiguration is handled).

Signed-off-by: Philippe Guibert <philippe.guibert@6wind.com>
This commit is contained in:
Philippe Guibert 2019-07-09 10:59:14 +02:00
parent 951745bdab
commit 1276ce3833
2 changed files with 12 additions and 0 deletions
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7
bgpd/bgp_route.c
View File

@ -3165,6 +3165,13 @@ int bgp_update(struct peer *peer, struct prefix *p, uint32_t addpath_id,
goto filtered;
}
if (pi && pi->attr &&
pi->attr->rmap_table_id != new_attr.rmap_table_id) {
if (CHECK_FLAG(pi->flags, BGP_PATH_SELECTED))
/* remove from RIB previous entry */
bgp_zebra_withdraw(p, pi, bgp, safi);
}
if (peer->sort == BGP_PEER_EBGP) {
/* If we receive the graceful-shutdown community from an eBGP

5
bgpd/bgp_zebra.c
View File

@ -1499,6 +1499,11 @@ void bgp_zebra_withdraw(struct prefix *p, struct bgp_path_info *info,
api.safi = safi;
api.prefix = *p;
if (info->attr->rmap_table_id) {
SET_FLAG(api.message, ZAPI_MESSAGE_TABLEID);
api.tableid = info->attr->rmap_table_id;
}
/* If the route's source is EVPN, flag as such. */
if (is_route_parent_evpn(info))
SET_FLAG(api.flags, ZEBRA_FLAG_EVPN_ROUTE);