This implements partial checksum and GSO support for tun/tap.
We use the virtio_net_hdr: it is an ABI already and designed to
encapsulate such metadata as GSO and partial checksums.
lguest performance (160MB sendfile, worst/best/avg, 20 runs):
Before: 5.06/3.39/3.82
After: 4.69/0
It's far easier to deal with GSO if we don't have to parse the packet
to figure out the header length. Add the field to the virtio_net_hdr
struct (and fix the spaces that somehow crept in there).
Signed-off-by: Rusty Russell <[EMAIL PROTECTED]>
---
drivers/net/virtio_net.c |4 +++-
include
Implement skb_partial_csum_set, for setting partial csums on untrusted packets.
Use it in virtio_net (replacing buggy version there), it's also going
to be used by TAP for partial csum support.
Signed-off-by: Rusty Russell <[EMAIL PROTECTED]>
---
drivers/net/virtio_net.c | 11 +--
incl
On Mon, Jan 14, 2008 at 03:29:45PM -0600, Anthony Liguori wrote:
> Marcelo Tosatti wrote:
> >Hi Rusty,
> >
> >It was agreed that the balloon driver should be merged through the
> >virtio tree, so here it goes. It depends on the config_changed patch
> >posted earlier.
> >
> >
> >-
> >
> >Followi
From: Rusty Russell <[EMAIL PROTECTED]>
Date: Tue, 15 Jan 2008 21:41:55 +1100
> Implement skb_partial_csum_set, for setting partial csums on untrusted
> packets.
>
> Use it in virtio_net (replacing buggy version there), it's also going
> to be used by TAP for partial csum support.
>
> Signed-of
On Tue, Jan 15, 2008 at 10:32:08AM +1100, Rusty Russell wrote:
> On Tuesday 15 January 2008 07:03:57 Marcelo Tosatti wrote:
> > Hi Rusty,
> >
> > It was agreed that the balloon driver should be merged through the
> > virtio tree, so here it goes. It depends on the config_changed patch
> > posted ea
On Tuesday 15 January 2008 22:14:22 David Miller wrote:
> From: Rusty Russell <[EMAIL PROTECTED]>
> Date: Tue, 15 Jan 2008 21:41:55 +1100
>
> > Implement skb_partial_csum_set, for setting partial csums on untrusted
> > packets.
> >
> > Use it in virtio_net (replacing buggy version there), it's also
Rusty Russell <[EMAIL PROTECTED]> wrote:
> It's far easier to deal with GSO if we don't have to parse the packet
> to figure out the header length. Add the field to the virtio_net_hdr
> struct (and fix the spaces that somehow crept in there).
>
> Signed-off-by: Rusty Russell <[EMAIL PROTECTED]>
>
On Wednesday 16 January 2008 11:06:21 Herbert Xu wrote:
> Rusty Russell <[EMAIL PROTECTED]> wrote:
> > It's far easier to deal with GSO if we don't have to parse the packet
> > to figure out the header length. Add the field to the virtio_net_hdr
> > struct (and fix the spaces that somehow crept in
