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dev: Hold per-netns RTNL in (un)?register_netdev().

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Let's hold per-netns RTNL of dev_net(dev) in register_netdev()
and unregister_netdev().

Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
This commit is contained in:
Kuniyuki Iwashima 2025-01-04 17:21:49 +09:00 • committed by Paolo Abeni
parent 7bd72a4aa2
commit 00fb982393
1 changed files with 10 additions and 4 deletions
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14
net/core/dev.c
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@ -10731,12 +10731,16 @@ EXPORT_SYMBOL_GPL(init_dummy_netdev);
*/ */
int register_netdev(struct net_device *dev) int register_netdev(struct net_device *dev)
{ {
struct net *net = dev_net(dev);
int err; int err;
if (rtnl_lock_killable()) if (rtnl_net_lock_killable(net))
return -EINTR; return -EINTR;
err = register_netdevice(dev); err = register_netdevice(dev);
rtnl_unlock();
rtnl_net_unlock(net);
return err; return err;
} }
EXPORT_SYMBOL(register_netdev); EXPORT_SYMBOL(register_netdev);
@ -11606,9 +11610,11 @@ EXPORT_SYMBOL(unregister_netdevice_many);
*/ */
void unregister_netdev(struct net_device *dev) void unregister_netdev(struct net_device *dev)
{ {
rtnl_lock(); struct net *net = dev_net(dev);
rtnl_net_lock(net);
unregister_netdevice(dev); unregister_netdevice(dev);
rtnl_unlock(); rtnl_net_unlock(net);
} }
EXPORT_SYMBOL(unregister_netdev); EXPORT_SYMBOL(unregister_netdev);