From: mitesh <mitesh@cumulusnetworks.com>
Date: Sat, 10 Feb 2018 05:54:00 +0000 (-0800)
Subject: bgpd: update the VNI labels in type-2 routes when l3vni gets deleted
X-Git-Tag: frr-5.0-dev~191^2~2
X-Git-Url: https://git.puffer.fish/?a=commitdiff_plain;h=7fdaec88941d66d831363d32084cc88c5b98ac6c;p=mirror%2Ffrr.git

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

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>
---

diff --git a/bgpd/bgp_evpn.c b/bgpd/bgp_evpn.c
index a50e3707ad..9b1ff8f6a9 100644
--- a/bgpd/bgp_evpn.c
+++ b/bgpd/bgp_evpn.c
@@ -1209,6 +1209,23 @@ static int update_evpn_route_entry(struct bgp *bgp, struct bgpevpn *vpn,
 		    && !CHECK_FLAG(tmp_ri->flags, BGP_INFO_REMOVED))
 			route_change = 0;
 		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. */
 			/* Add (or update) attribute to hash. */
 			attr_new = bgp_attr_intern(attr);