From: Rusty Russell <rusty@rustcorp•com.au>
To: "Michael S. Tsirkin" <mst@redhat•com>
Cc: netdev@vger•kernel.org, Linus Walleij <linus.walleij@linaro•org>,
virtualization@lists•linux-foundation.org
Subject: Re: [RFCv2 00/12] Introduce host-side virtio queue and CAIF Virtio.
Date: Sat, 12 Jan 2013 10:50:30 +1030 [thread overview]
Message-ID: <874nin1cc1.fsf@rustcorp.com.au> (raw)
In-Reply-To: <20130111073155.GA13315@redhat.com>
"Michael S. Tsirkin" <mst@redhat•com> writes:
> On Fri, Jan 11, 2013 at 09:18:33AM +1030, Rusty Russell wrote:
>> "Michael S. Tsirkin" <mst@redhat•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.
>
> Oh for some reason I thought you were talking about virtio.
> I don't really understand what you are saying here - vhost
> actually calls out to tun to build and submit the skb.
Ah, the fd is tun? Seems a bit indirect; I wonder if there's room for
more optimization here...
Cheers,
Rusty.
next prev parent reply other threads:[~2013-01-12 0:20 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-10-31 22:46 [RFC virtio-next 0/4] Introduce CAIF Virtio and reversed Vrings Sjur Brændeland
2012-10-31 22:46 ` [RFC virtio-next 1/4] virtio: Move definitions to header file vring.h Sjur Brændeland
2012-10-31 22:46 ` [RFC virtio-next 2/4] include/vring.h: Add support for reversed vritio rings Sjur Brændeland
2012-10-31 22:46 ` [RFC virtio-next 3/4] virtio_ring: Call callback function even when used ring is empty Sjur Brændeland
2012-10-31 22:46 ` [RFC virtio-next 4/4] caif_virtio: Add CAIF over virtio Sjur Brændeland
2012-11-01 7:41 ` [RFC virtio-next 0/4] Introduce CAIF Virtio and reversed Vrings Rusty Russell
2012-11-05 12:12 ` Sjur Brændeland
2012-11-06 2:09 ` Rusty Russell
[not found] ` <1354718230-4486-1-git-send-email-sjur@brendeland.net>
[not found] ` <20121206102750.GF10837@redhat.com>
[not found] ` <877goc0wac.fsf@rustcorp.com.au>
[not found] ` <CAJK669bP41oBhJ=MB64NS21Ag7XO5WswuTiVKCFTb96nvmyBiw@mail.gmail.com>
[not found] ` <87pq1f2rj0.fsf@rustcorp.com.au>
[not found] ` <87wqvl1g9s.fsf@rustcorp.com.au>
[not found] ` <20130110111117.GE13451@redhat.com>
2013-01-10 22:48 ` [RFCv2 00/12] Introduce host-side virtio queue and CAIF Virtio Rusty Russell
2013-01-11 7:31 ` Michael S. Tsirkin
2013-01-12 0:20 ` Rusty Russell [this message]
2013-01-14 16:54 ` Michael S. Tsirkin
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