linux-kernel - [PATCH 3.16 029/192] vxlan: dont migrate permanent fdb entries during learn

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Message-ID: <lsq.1507553064.819019790@decadent.org.uk>
Date:   Mon, 09 Oct 2017 13:44:24 +0100
From:   Ben Hutchings <ben@...adent.org.uk>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
CC:     akpm@...ux-foundation.org,
        "Roopa Prabhu" <roopa@...ulusnetworks.com>,
        "David S. Miller" <davem@...emloft.net>
Subject: [PATCH 3.16 029/192] vxlan: dont migrate permanent fdb entries
 during learn

3.16.49-rc1 review patch.  If anyone has any objections, please let me know.

------------------

From: Roopa Prabhu <roopa@...ulusnetworks.com>

commit e0090a9e979de5202c7d16c635dea2f005221073 upstream.

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@...ulusnetworks.com>
Signed-off-by: David S. Miller <davem@...emloft.net>
Signed-off-by: Ben Hutchings <ben@...adent.org.uk>
---
 drivers/net/vxlan.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/net/vxlan.c
+++ b/drivers/net/vxlan.c
@@ -991,7 +991,7 @@ static bool vxlan_snoop(struct net_devic
 			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())