[RFC PATCH 2/3] netdev: kernel-only IFF_HIDDEN netdevice

Andrew Lunn
Sat, 07 Apr 2018 03:19:19 -0000

Hi Siwei

> I think everyone seems to agree not to fiddle with the ":"
prefix, but
> rather have a new class of network subsystem under /sys/class thus a
> separate device namespace e.g. /sys/class/net-kernel for those
> auto-managed lower netdevs is needed.

How do you get a device into this new class? I don't know the Linux
driver model too well, but to get a device out of one class and into
another, i think you need to device_del(dev). modify dev->class and
then device_add(dev). However, device_add() says you are not allowed
to do this.

And i don't even see how this helps. Are you also not going to call
list_netdevice()? Are you going to add some other list for these
devices in a different class?

   Andrew