Subject: Re: [PATCH net-next v6 0/8] tun/tap & vhost-net: netdev queue flow control to avoid ptr_ring tail drop

From: "Michael S. Tsirkin" <[email-masked]>
Date: Wed, 26 Nov 2025 02:15:16 -0500

On Fri, Nov 21, 2025 at 10:22:54AM +0100, Simon Schippers wrote:
> I agree, but I really would like to reduce the buffer bloat caused by the
> default 500 TUN / 1000 TAP packet queue without losing performance.

that default is part of the userspace API and can't be changed.
just change whatever userspace is creating your device.

-- 
MST