diff options
| -rw-r--r-- | drivers/net/macvlan.c | 4 | ||||
| -rw-r--r-- | net/8021q/vlan.c | 4 | ||||
| -rw-r--r-- | net/core/dev.c | 4 |
3 files changed, 12 insertions, 0 deletions
diff --git a/drivers/net/macvlan.c b/drivers/net/macvlan.c index 0ef0eb0db945..0fc9dc7f20db 100644 --- a/drivers/net/macvlan.c +++ b/drivers/net/macvlan.c @@ -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; diff --git a/net/8021q/vlan.c b/net/8021q/vlan.c index a2ad15250575..2c6c2bd6e4a9 100644 --- a/net/8021q/vlan.c +++ b/net/8021q/vlan.c @@ -525,6 +525,10 @@ static int vlan_device_event(struct notifier_block *unused, unsigned long event, break; case NETDEV_UNREGISTER: + /* twiddle thumbs on netns device moves */ + if (dev->reg_state != NETREG_UNREGISTERING) + break; + /* Delete all VLANs for this dev. */ grp->killall = 1; diff --git a/net/core/dev.c b/net/core/dev.c index c09ff096525a..2c7934f8cf3e 100644 --- a/net/core/dev.c +++ b/net/core/dev.c @@ -5686,6 +5686,10 @@ int dev_change_net_namespace(struct net_device *dev, struct net *net, const char /* Notify protocols, that we are about to destroy this device. They should clean all the things. + + Note that dev->reg_state stays at NETREG_REGISTERED. + This is wanted because this way 8021q and macvlan know + the device is just moving and can keep their slaves up. */ call_netdevice_notifiers(NETDEV_UNREGISTER, dev); call_netdevice_notifiers(NETDEV_UNREGISTER_BATCH, dev); |