Tested this series of patches with vhost-net regression tests,
everything works fine.
Tested-by: Lei Yang <leiy...@redhat.com>
On Fri, May 23, 2025 at 4:24 PM Akihiko Odaki <akihiko.od...@daynix.com> wrote:
>
> On 2025/05/21 20:34, Paolo Abeni wrote:
> > When the GSO over UDP tunnel offload is enabled, the virtio net
> > header includes additional fields to support such offload.
> >
> > The vhost backend must be aware of the exact header layout, to
> > copy it correctly. The tunnel-related field are present if either
> > the guest or the host negotiated any UDP tunnel related feature:
> > add them to host kernel supported features list, to allow qemu
> > transder to such backend the needed information.
>
> s/transder/transfer/
>
> This patch should be squashed into the previous patch ("[PATCH RFC
> 15/16] net: implement tnl feature offloading") as QEMU only with the
> previous patch will incorrectly enable tunnel offloading even when vhost
> doesn't support it.
>
> >
> > Signed-off-by: Paolo Abeni <pab...@redhat.com>
> > ---
> > hw/net/vhost_net.c | 4 ++++
> > 1 file changed, 4 insertions(+)
> >
> > diff --git a/hw/net/vhost_net.c b/hw/net/vhost_net.c
> > index 58d7619fc8..c8e02d1732 100644
> > --- a/hw/net/vhost_net.c
> > +++ b/hw/net/vhost_net.c
> > @@ -52,6 +52,10 @@ static const int kernel_feature_bits[] = {
> > VIRTIO_F_NOTIFICATION_DATA,
> > VIRTIO_NET_F_RSC_EXT,
> > VIRTIO_NET_F_HASH_REPORT,
> > +#ifdef CONFIG_INT128
> > + VIRTIO_NET_F_GUEST_UDP_TUNNEL_GSO,
> > + VIRTIO_NET_F_HOST_UDP_TUNNEL_GSO,
> > +#endif
> > VHOST_INVALID_FEATURE_BIT
> > };
> >
>
>
