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From:   Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To:     linux-kernel@vger.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        stable@vger.kernel.org, William Dauchy <w.dauchy@criteo.com>,
        Nicolas Dichtel <nicolas.dichtel@6wind.com>,
        "David S. Miller" <davem@davemloft.net>
Subject: [PATCH 4.9 238/271] net, ip_tunnel: fix namespaces move
Date:   Tue, 28 Jan 2020 15:06:27 +0100
Message-Id: <20200128135910.263079055@linuxfoundation.org>
In-Reply-To: <20200128135852.449088278@linuxfoundation.org>
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From: William Dauchy <w.dauchy@criteo.com>

[ Upstream commit d0f418516022c32ecceaf4275423e5bd3f8743a9 ]

in the same manner as commit 690afc165bb3 ("net: ip6_gre: fix moving
ip6gre between namespaces"), fix namespace moving as it was broken since
commit 2e15ea390e6f ("ip_gre: Add support to collect tunnel metadata.").
Indeed, the ip6_gre commit removed the local flag for collect_md
condition, so there is no reason to keep it for ip_gre/ip_tunnel.

this patch will fix both ip_tunnel and ip_gre modules.

Fixes: 2e15ea390e6f ("ip_gre: Add support to collect tunnel metadata.")
Signed-off-by: William Dauchy <w.dauchy@criteo.com>
Acked-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 net/ipv4/ip_tunnel.c |    4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

--- a/net/ipv4/ip_tunnel.c
+++ b/net/ipv4/ip_tunnel.c
@@ -1184,10 +1184,8 @@ int ip_tunnel_init(struct net_device *de
 	iph->version		= 4;
 	iph->ihl		= 5;
 
-	if (tunnel->collect_md) {
-		dev->features |= NETIF_F_NETNS_LOCAL;
+	if (tunnel->collect_md)
 		netif_keep_dst(dev);
-	}
 	return 0;
 }
 EXPORT_SYMBOL_GPL(ip_tunnel_init);