netdev - Re: [RFCv2 00/12] Introduce host-side virtio queue and CAIF Virtio.

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Date:	Fri, 11 Jan 2013 09:18:33 +1030
From:	Rusty Russell <rusty@...tcorp.com.au>
To:	"Michael S. Tsirkin" <mst@...hat.com>
Cc:	Sjur Brændeland <sjurbren@...il.com>,
	Linus Walleij <linus.walleij@...aro.org>,
	virtualization@...ts.linux-foundation.org, <netdev@...r.kernel.org>
Subject: Re: [RFCv2 00/12] Introduce host-side virtio queue and CAIF Virtio.

"Michael S. Tsirkin" <mst@...hat.com> writes:
> On Thu, Jan 10, 2013 at 09:00:55PM +1030, Rusty Russell wrote:
>> Not sure why vhost/net doesn't built a packet and feed it in
>> netif_rx_ni().  This is what tun seems to do, and with this code it
>> should be fairly optimal.
>
> Because we want to use NAPI.

Not quite what I was asking; it was more a question of why we're using a
raw socket, when we trivially have a complete skb already which we
should be able to feed to Linux like any network packet.

And that path is pretty well optimized...

Cheers,
Rusty.
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