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bgpd: update the VNI labels in type-2 routes when l3vni gets deleted

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When an l3-vni is enabled, type-2 routes are sent with 2 labels (l2vni and l3vni).
When it gets deleted, we need to update type-2 routes and send them with only one label (l2vni).

Signed-off-by: Mitesh Kanjariya <mitesh@cumulusnetworks.com>
This commit is contained in:
mitesh 2018-02-09 21:54:00 -08:00
parent 12eeac84ff
commit 7fdaec8894
1 changed files with 17 additions and 0 deletions
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17
bgpd/bgp_evpn.c
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@ -1209,6 +1209,23 @@ static int update_evpn_route_entry(struct bgp *bgp, struct bgpevpn *vpn,
&& !CHECK_FLAG(tmp_ri->flags, BGP_INFO_REMOVED)) && !CHECK_FLAG(tmp_ri->flags, BGP_INFO_REMOVED))
route_change = 0; route_change = 0;
else { else {
/*
* The attributes have changed, type-2 routes needs to
* be advertised with right labels.
*/
vni2label(vpn->vni, &label[0]);
if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) {
vni_t l3vni;
l3vni = bgpevpn_get_l3vni(vpn);
if (l3vni) {
vni2label(l3vni, &label[1]);
num_labels++;
}
}
memcpy(&tmp_ri->extra->label, label, sizeof(label));
tmp_ri->extra->num_labels = num_labels;
/* The attribute has changed. */ /* The attribute has changed. */
/* Add (or update) attribute to hash. */ /* Add (or update) attribute to hash. */
attr_new = bgp_attr_intern(attr); attr_new = bgp_attr_intern(attr);