Virtualization - Jul 2013 - [PATCH] virtio-net: put virtio net header inline with data

From: Rusty Russell <rusty at rustcorp.com.au>
Date: Mon, 15 Jul 2013 11:13:25 +0930
> From: Michael S. Tsirkin <mst at redhat.com>
> 
> For small packets we can simplify xmit processing
> by linearizing buffers with the header:
> most packets seem to have enough head room
> we can use for this purpose.
> Since existing hypervisors require that header
> is the first s/g element, we need a feature bit
> for this.
> 
> Signed-off-by: Michael S. Tsirkin <mst at redhat.com>
> Signed-off-by: Rusty Russell <rusty at rustcorp.com.au>
I really think this has to wait until the next merge window, sorry.

Please resubmit this when I open net-next back up, thanks.

David Miller <davem at davemloft.net> writes:
> From: Rusty Russell <rusty at rustcorp.com.au>
> Date: Mon, 15 Jul 2013 11:13:25 +0930
>
>> From: Michael S. Tsirkin <mst at redhat.com>
>> 
>> For small packets we can simplify xmit processing
>> by linearizing buffers with the header:
>> most packets seem to have enough head room
>> we can use for this purpose.
>> Since existing hypervisors require that header
>> is the first s/g element, we need a feature bit
>> for this.
>> 
>> Signed-off-by: Michael S. Tsirkin <mst at redhat.com>
>> Signed-off-by: Rusty Russell <rusty at rustcorp.com.au>
>
> I really think this has to wait until the next merge window, sorry.
>
> Please resubmit this when I open net-next back up, thanks.
Oh, assumed it was already open.    Will re-submit then.

Cheers,
Rusty.

On Tue, Jul 16, 2013 at 12:33:26PM -0700, David Miller
wrote:
> From: Rusty Russell <rusty at rustcorp.com.au>
> Date: Mon, 15 Jul 2013 11:13:25 +0930
> 
> > From: Michael S. Tsirkin <mst at redhat.com>
> > 
> > For small packets we can simplify xmit processing
> > by linearizing buffers with the header:
> > most packets seem to have enough head room
> > we can use for this purpose.
> > Since existing hypervisors require that header
> > is the first s/g element, we need a feature bit
> > for this.
> > 
> > Signed-off-by: Michael S. Tsirkin <mst at redhat.com>
> > Signed-off-by: Rusty Russell <rusty at rustcorp.com.au>
> 
> I really think this has to wait until the next merge window, sorry.
> 
> Please resubmit this when I open net-next back up, thanks.
I assumed since -rc1 is out net-next is already open?

From: "Michael S. Tsirkin" <mst at redhat.com>
Date: Wed, 17 Jul 2013 08:00:32 +0300
> On Tue, Jul 16, 2013 at 12:33:26PM -0700, David Miller wrote:
>> From: Rusty Russell <rusty at rustcorp.com.au>
>> Date: Mon, 15 Jul 2013 11:13:25 +0930
>> 
>> > From: Michael S. Tsirkin <mst at redhat.com>
>> > 
>> > For small packets we can simplify xmit processing
>> > by linearizing buffers with the header:
>> > most packets seem to have enough head room
>> > we can use for this purpose.
>> > Since existing hypervisors require that header
>> > is the first s/g element, we need a feature bit
>> > for this.
>> > 
>> > Signed-off-by: Michael S. Tsirkin <mst at redhat.com>
>> > Signed-off-by: Rusty Russell <rusty at rustcorp.com.au>
>> 
>> I really think this has to wait until the next merge window, sorry.
>> 
>> Please resubmit this when I open net-next back up, thanks.
> 
> I assumed since -rc1 is out net-next is already open?
-rc1 being released never makes net-next open.  Instead, I explicitly
open it up at some point in time after -rc1 when I feel that things
have settled down enough.

And when that happens, I announce so here.

So you have to follow my announcements here on netdev to know
when net-next is actually open.