diff options
Diffstat (limited to 'net/core/dev.c')
| -rw-r--r-- | net/core/dev.c | 18 |
1 files changed, 14 insertions, 4 deletions
diff --git a/net/core/dev.c b/net/core/dev.c index d334446a8ea..ce88c0d3e35 100644 --- a/net/core/dev.c +++ b/net/core/dev.c @@ -903,7 +903,11 @@ int dev_change_name(struct net_device *dev, char *newname) strlcpy(dev->name, newname, IFNAMSIZ); rollback: - device_rename(&dev->dev, dev->name); + err = device_rename(&dev->dev, dev->name); + if (err) { + memcpy(dev->name, oldname, IFNAMSIZ); + return err; + } write_lock_bh(&dev_base_lock); hlist_del(&dev->name_hlist); @@ -994,6 +998,8 @@ int dev_open(struct net_device *dev) { int ret = 0; + ASSERT_RTNL(); + /* * Is it already up? */ @@ -1060,6 +1066,8 @@ int dev_open(struct net_device *dev) */ int dev_close(struct net_device *dev) { + ASSERT_RTNL(); + might_sleep(); if (!(dev->flags & IFF_UP)) @@ -4480,17 +4488,19 @@ static void __net_exit default_device_exit(struct net *net) rtnl_lock(); for_each_netdev_safe(net, dev, next) { int err; + char fb_name[IFNAMSIZ]; /* Ignore unmoveable devices (i.e. loopback) */ if (dev->features & NETIF_F_NETNS_LOCAL) continue; /* Push remaing network devices to init_net */ - err = dev_change_net_namespace(dev, &init_net, "dev%d"); + snprintf(fb_name, IFNAMSIZ, "dev%d", dev->ifindex); + err = dev_change_net_namespace(dev, &init_net, fb_name); if (err) { - printk(KERN_WARNING "%s: failed to move %s to init_net: %d\n", + printk(KERN_EMERG "%s: failed to move %s to init_net: %d\n", __func__, dev->name, err); - unregister_netdevice(dev); + BUG(); } } rtnl_unlock(); |