xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

netns: keep vlan slaves on master netns move

Browse Source 
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>
This commit is contained in:
David Lamparter
2010-09-17 03:22:19 +00:00
committed by David S. Miller
parent b71c7aaa1e
commit 3b27e10555
3 changed files with 12 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/net/macvlan.c
View File

@@ -788,6 +788,10 @@ static int macvlan_device_event(struct notifier_block *unused,
}
break;
case NETDEV_UNREGISTER:
/* twiddle thumbs on netns device moves */
if (dev->reg_state != NETREG_UNREGISTERING)
break;
list_for_each_entry_safe(vlan, next, &port->vlans, list)
vlan->dev->rtnl_link_ops->dellink(vlan->dev, NULL);
break;