"Michael S. Tsirkin" writes:
> On Tue, Jul 09, 2013 at 11:46:23AM +0930, Rusty Russell wrote:
>> "Michael S. Tsirkin" writes:
>> > 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 thi
On Tue, Jul 09, 2013 at 11:46:23AM +0930, Rusty Russell wrote:
> "Michael S. Tsirkin" writes:
> > 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 hypervi
On Fri, Jun 07, 2013 at 11:42:43AM +0930, Rusty Russell wrote:
> "Michael S. Tsirkin" writes:
> > 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 some older hyper
On Fri, Jun 07, 2013 at 10:52:01AM +0800, Jason Wang wrote:
> On 06/06/2013 05:55 PM, Michael S. Tsirkin wrote:
> > 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
"Michael S. Tsirkin" writes:
> 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 some older hypervisors (e.g. qemu before version 1.5)
> required that header is the first s
On 06/06/2013 05:55 PM, Michael S. Tsirkin wrote:
> 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 some older hypervisors (e.g. qemu before version 1.5)
> required that h
On Thu, Jun 06, 2013 at 02:59:44PM -0500, Jesse Larrew wrote:
> >pr_debug("%s: xmit %p %pM\n", vi->dev->name, skb, dest);
> > + if (vi->mergeable_rx_bufs)
> > + hdr_len = sizeof hdr->mhdr;
> > + else
> > + hdr_len = sizeof hdr->hdr;
>
> All conditionals need braces
On 06/06/2013 03:09 PM, Dave Jones wrote:
> On Thu, Jun 06, 2013 at 02:59:44PM -0500, Jesse Larrew wrote:
>
> > > pr_debug("%s: xmit %p %pM\n", vi->dev->name, skb, dest);
> > > +if (vi->mergeable_rx_bufs)
> > > +hdr_len = sizeof hdr->mhdr;
> > > +else
>
Hi Michael!
On 06/06/2013 04:55 AM, Michael S. Tsirkin wrote:
> diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c
> index c9e0038..d35a097 100644
> --- a/drivers/net/virtio_net.c
> +++ b/drivers/net/virtio_net.c
> @@ -106,6 +106,9 @@ struct virtnet_info {
> /* Has control virt
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 some older hypervisors (e.g. qemu before version 1.5)
required that header is the first s/g element,
we need a feature bit for thi
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