[ovs-dev] [PATCH 09/11] ip_gre: erspan device should keep dst

Greg Rose gvrose8192 at gmail.com
Wed Apr 25 16:21:47 UTC 2018

From: Xin Long <lucien.xin at gmail.com>

Upstream commit:
    commit c84bed440e4e11a973e8c0254d0dfaccfca41fb0
    Author: Xin Long <lucien.xin at gmail.com>
    Date:   Sun Oct 1 22:00:56 2017 +0800

    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 at gmail.com>
    Signed-off-by: David S. Miller <davem at davemloft.net>

Cc: Xin Long <lucien.xin at gmail.com>
Signed-off-by: Greg Rose <gvrose8192 at gmail.com>
 datapath/linux/compat/ip_gre.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/datapath/linux/compat/ip_gre.c b/datapath/linux/compat/ip_gre.c
index 7a4b5af..2d6625c 100644
--- a/datapath/linux/compat/ip_gre.c
+++ b/datapath/linux/compat/ip_gre.c
@@ -1053,6 +1053,7 @@ 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);

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