diff options
Diffstat (limited to 'net/core/dev.c')
| -rw-r--r-- | net/core/dev.c | 25 |
1 files changed, 20 insertions, 5 deletions
diff --git a/net/core/dev.c b/net/core/dev.c index d9038e328cc..3a2b8be9e67 100644 --- a/net/core/dev.c +++ b/net/core/dev.c @@ -924,10 +924,15 @@ int dev_change_name(struct net_device *dev, const char *newname) strlcpy(dev->name, newname, IFNAMSIZ); rollback: - ret = device_rename(&dev->dev, dev->name); - if (ret) { - memcpy(dev->name, oldname, IFNAMSIZ); - return ret; + /* For now only devices in the initial network namespace + * are in sysfs. + */ + if (net == &init_net) { + ret = device_rename(&dev->dev, dev->name); + if (ret) { + memcpy(dev->name, oldname, IFNAMSIZ); + return ret; + } } write_lock_bh(&dev_base_lock); @@ -4460,6 +4465,15 @@ int dev_change_net_namespace(struct net_device *dev, struct net *net, const char if (dev->features & NETIF_F_NETNS_LOCAL) goto out; +#ifdef CONFIG_SYSFS + /* Don't allow real devices to be moved when sysfs + * is enabled. + */ + err = -EINVAL; + if (dev->dev.parent) + goto out; +#endif + /* Ensure the device has been registrered */ err = -EINVAL; if (dev->reg_state != NETREG_REGISTERED) @@ -4517,6 +4531,8 @@ int dev_change_net_namespace(struct net_device *dev, struct net *net, const char */ dev_addr_discard(dev); + netdev_unregister_kobject(dev); + /* Actually switch the network namespace */ dev_net_set(dev, net); @@ -4533,7 +4549,6 @@ int dev_change_net_namespace(struct net_device *dev, struct net *net, const char } /* Fixup kobjects */ - netdev_unregister_kobject(dev); err = netdev_register_kobject(dev); WARN_ON(err); |