On Tue, Feb 20, 2024 at 05:33:09PM -0800, Jakub Kicinski wrote:

Greg, we have a feature here where a single device of class net has
multiple "bus parents". We used to have one attr under class net
(device) which is a link to the bus parent. Now we either need to add
more or not bother with the linking of the whole device. Is there any
precedent / preference for solving this from the device model
perspective?

How, logically, can a netdevice be controlled properly from 2 parent
devices on two different busses?  How is that even possible from a
physical point-of-view?  What exact bus types are involved here?

This "shouldn't" be possible as in the end, it's usually a PCI device
handling this all, right?

thanks,

greg k-h