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net: ip6_gre: fix moving ip6gre between namespaces

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[ Upstream commit 690afc165bb314354667f67157c1a1aea7dc797a ]

Support for moving IPv4 GRE tunnels between namespaces was added in
commit b57708add3 ("gre: add x-netns support"). The respective change
for IPv6 tunnels, commit 22f08069e8 ("ip6gre: add x-netns support")
did not drop NETIF_F_NETNS_LOCAL flag so moving them from one netns to
another is still denied in IPv6 case. Drop NETIF_F_NETNS_LOCAL flag from
ip6gre tunnels to allow moving ip6gre tunnel endpoints between network
namespaces.

Signed-off-by: Niko Kortstrom <niko.kortstrom@nokia.com>
Acked-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Acked-by: William Tu <u9012063@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Niko Kortstrom 2020-01-16 11:43:27 +02:00 • committed by Greg Kroah-Hartman
parent 404d333fd3
commit d0201d2405
1 changed files with 0 additions and 3 deletions

3
net/ipv6/ip6_gre.c
View file

@ -1486,7 +1486,6 @@ static int ip6gre_tunnel_init_common(struct net_device *dev)
dev->mtu -= 8;
if (tunnel->parms.collect_md) {
dev->features |= NETIF_F_NETNS_LOCAL;
netif_keep_dst(dev);
}
ip6gre_tnl_init_features(dev);
@ -1914,7 +1913,6 @@ static void ip6gre_tap_setup(struct net_device *dev)
dev->needs_free_netdev = true;
dev->priv_destructor = ip6gre_dev_free;
dev->features |= NETIF_F_NETNS_LOCAL;
dev->priv_flags &= ~IFF_TX_SKB_SHARING;
dev->priv_flags |= IFF_LIVE_ADDR_CHANGE;
netif_keep_dst(dev);
@ -2223,7 +2221,6 @@ static void ip6erspan_tap_setup(struct net_device *dev)
dev->needs_free_netdev = true;
dev->priv_destructor = ip6gre_dev_free;
dev->features |= NETIF_F_NETNS_LOCAL;
dev->priv_flags &= ~IFF_TX_SKB_SHARING;
dev->priv_flags |= IFF_LIVE_ADDR_CHANGE;
netif_keep_dst(dev);