From: Chirag Shah <chirag@cumulusnetworks.com>
Date: Tue, 26 May 2020 18:43:14 +0000 (-0700)
Subject: zebra: dup detected mac avoid update to bgpd
X-Git-Tag: frr-7.5~20^2
X-Git-Url: https://git.puffer.fish/?a=commitdiff_plain;h=2ce90bb10faf125d040503adc124373910d11f13;p=mirror%2Ffrr.git

zebra: dup detected mac avoid update to bgpd

When a MAC is detected duplicate on a local
learn event (with freeze action),
do not send update to bgp to advertise into
evpn control plane.

With evpn mh, inform_client flag is set and
sends notification to bgp albeit dup detect
is set.

Check mac are detected as duplicate before
setting inform_client to true.

Ticket:CM-29817
Reviewed By:CCR-10329
Testing Done:

Enable DAD with freeze action
Upon local learn MAC detected as duplica

Signed-off-by: Chirag Shah <chirag@nvidia.com>
---

diff --git a/zebra/zebra_evpn_mac.c b/zebra/zebra_evpn_mac.c
index b9cc02a276..eb4e4f9a57 100644
--- a/zebra/zebra_evpn_mac.c
+++ b/zebra/zebra_evpn_mac.c
@@ -2060,6 +2060,7 @@ int zebra_evpn_add_update_local_mac(struct zebra_vrf *zvrf, zebra_evpn_t *zevpn,
 			if (is_dup_detect) {
 				inform_client = false;
 				upd_neigh = false;
+				es_change = false;
 			}
 		}
 	}
@@ -2092,7 +2093,8 @@ int zebra_evpn_add_update_local_mac(struct zebra_vrf *zvrf, zebra_evpn_t *zevpn,
 				mac->es ? mac->es->esi_str : "", mac->loc_seq,
 				mac->flags,
 				local_inactive ? " local-inactive" : "");
-		inform_client = true;
+		if (!is_dup_detect)
+			inform_client = true;
 	}
 
 	if (es_change) {