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net: ip6_tunnel: Unregister catch-all devices

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commit 941ea91e87a6e879ed82dad4949f6234f2702bec upstream.

Similarly to the sit case, we need to remove the tunnels with no
addresses that have been moved to another network namespace.

Fixes: 0bd8762824e73 ("ip6tnl: add x-netns support")
Signed-off-by: Hristo Venev <hristo@venev.name>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Hristo Venev 2021-04-12 20:41:17 +03:00 committed by Greg Kroah-Hartman
parent ea0340e632
commit 33f3dab42a
1 changed files with 10 additions and 0 deletions
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10
net/ipv6/ip6_tunnel.c
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@ -2275,6 +2275,16 @@ static void __net_exit ip6_tnl_destroy_tunnels(struct net *net, struct list_head
t = rtnl_dereference(t->next);
}
}
t = rtnl_dereference(ip6n->tnls_wc[0]);
while (t) {
/* If dev is in the same netns, it has already
* been added to the list by the previous loop.
*/
if (!net_eq(dev_net(t->dev), net))
unregister_netdevice_queue(t->dev, list);
t = rtnl_dereference(t->next);
}
}
static int __net_init ip6_tnl_init_net(struct net *net)