From: Roopa Prabhu <roopa@cumulusnetworks.com>
Date: Sun, 11 Jun 2017 23:32:50 +0000 (-0700)
Subject: vxlan: dont migrate permanent fdb entries during learn
X-Git-Tag: v3.18.105~34
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=e1acea7442a568921dfd79299543002d47a2a6a9;p=thirdparty%2Fkernel%2Fstable.git

vxlan: dont migrate permanent fdb entries during learn


[ Upstream commit e0090a9e979de5202c7d16c635dea2f005221073 ]

This patch fixes vxlan_snoop to not move permanent fdb entries
on learn events. This is consistent with the bridge fdb
handling of permanent entries.

Fixes: 26a41ae60438 ("vxlan: only migrate dynamic FDB entries")
Signed-off-by: Roopa Prabhu <roopa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/net/vxlan.c b/drivers/net/vxlan.c
index 2dc89582575a4..3db77c2740986 100644
--- a/drivers/net/vxlan.c
+++ b/drivers/net/vxlan.c
@@ -985,7 +985,7 @@ static bool vxlan_snoop(struct net_device *dev,
 			return false;
 
 		/* Don't migrate static entries, drop packets */
-		if (f->state & NUD_NOARP)
+		if (f->state & (NUD_PERMANENT | NUD_NOARP))
 			return true;
 
 		if (net_ratelimit())