netns: keep vlan slaves on master netns move
authorDavid Lamparter <equinox@diac24.net>
Fri, 17 Sep 2010 03:22:19 +0000 (03:22 +0000)
committerDavid S. Miller <davem@davemloft.net>
Fri, 17 Sep 2010 23:46:04 +0000 (16:46 -0700)
commit3b27e105550f7c4a79ecb6d6a9c49c651c59ae9b
tree5603f5c9322f40d40a63efe5519c0a9bf164b972
parentb71c7aaa1e2a9858f0c469026098fbd6e046d7bb
netns: keep vlan slaves on master netns move

previously, if a vlan master device was moved from one network namespace
to another, all 802.1q and macvlan slaves were deleted.

we can use dev->reg_state to figure out whether dev_change_net_namespace
is happening, since that won't set dev->reg_state NETREG_UNREGISTERING.
so, this changes 8021q and macvlan to ignore NETDEV_UNREGISTER when
reg_state is not NETREG_UNREGISTERING.

Signed-off-by: David Lamparter <equinox@diac24.net>
Reviewed-by: "Eric W. Biederman" <ebiederm@xmission.com>
Acked-by: Daniel Lezcano <daniel.lezcano@free.fr>
Acked-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
drivers/net/macvlan.c
net/8021q/vlan.c
net/core/dev.c