netdev - Re: Tun congestion/BQL

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Date:   Thu, 11 Apr 2019 12:25:28 +0300
From:   David Woodhouse <dwmw2@...radead.org>
To:     Jason Wang <jasowang@...hat.com>,
        Toke Høiland-Jørgensen <toke@...hat.com>,
        netdev@...r.kernel.org
Subject: Re: Tun congestion/BQL

On Thu, 2019-04-11 at 15:22 +0800, Jason Wang wrote:
> If you care about userspace performance, you may want to try vhost + TAP 
> instead. I admit the API is not user friendly which needs to be improved 
> but then there will be no syscall overhead on packet transmission and 
> receiving, and eventfd will be used for notification.

That would be very useful. Is there any example code I can follow?


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