Subject: Re: [PATCH net-next v3 00/12] net: airoha: Support multiple net_devices connected to the same GDM port

From: Jakub Kicinski <[email-masked]>
Date: Thu, 9 Apr 2026 19:59:50 -0700

On Mon, 06 Apr 2026 12:34:05 +0200 Lorenzo Bianconi wrote:
> EN7581 or AN7583 SoCs support connecting multiple external SerDes (e.g.
> Ethernet or USB SerDes) to GDM3 or GDM4 ports via a hw arbiter that
> manages the traffic in a TDM manner. As a result multiple net_devices can
> connect to the same GDM{3,4} port and there is a theoretical "1:n"
> relation between GDM ports and net_devices.

Looks like this driver uses page pool.
If you're sharing the same page pool across multiple netdevs
it must not be linked to a netdev.