Re: [PATCH net-next 0/5] net: ipqess: introduce Qualcomm IPQESS driver

Andrew Lunn
2022-04-22T20:30:57Z

On Fri, Apr 22, 2022 at 08:03:00PM +0200, Maxime Chevallier wrote:
> Hello everyone,
>
> This series introduces a new driver, for the Qualcomm IPQESS Ethernet
> Controller, found on the IPQ4019.
>
> The driver itself is pretty straightforward, but has lived out-of-tree
> for a while. I've done my best to clean-up some outdated API calls, but
> some might remain.
>
> This controller is somewhat special, since it's part of the IPQ4019 SoC
> which also includes an QCA8K switch, and uses the IPQESS controller for
> the CPU port.

Does it exist in a form where it is not connected to a switch?

As Florian has suggested, if we assume frames are always going
to/coming from a switch, we can play around with the frame format a
little. A dummy tag could be added to the head or tail of the frame,
which the MAC driver then uses. That gives us a more normal structure.

Andrew