From: Xin Long <lucien.xin@gmail.com>
Date: Sun, 1 Oct 2017 14:00:56 +0000 (+0800)
Subject: ip_gre: erspan device should keep dst
X-Git-Tag: Ubuntu-5.0.0-8.9~3896^2~11^2
X-Git-Url: https://git.proxmox.com/?a=commitdiff_plain;h=c84bed440e4e11a973e8c0254d0dfaccfca41fb0;p=mirror_ubuntu-disco-kernel.git

ip_gre: erspan device should keep dst

The patch 'ip_gre: ipgre_tap device should keep dst' fixed
the issue ipgre_tap dev mtu couldn't be updated in tx path.

The same fix is needed for erspan as well.

Fixes: 84e54fe0a5ea ("gre: introduce native tunnel support for ERSPAN")
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/net/ipv4/ip_gre.c b/net/ipv4/ip_gre.c
index fad0bb1e3e9a..467e44d7587d 100644
--- a/net/ipv4/ip_gre.c
+++ b/net/ipv4/ip_gre.c
@@ -1254,6 +1254,7 @@ static int erspan_tunnel_init(struct net_device *dev)
 	dev->features		|= GRE_FEATURES;
 	dev->hw_features	|= GRE_FEATURES;
 	dev->priv_flags		|= IFF_LIVE_ADDR_CHANGE;
+	netif_keep_dst(dev);
 
 	return ip_tunnel_init(dev);
 }