[dpdk-dev] [PATCH v4 7/8] virtio/lib:add virtio guest offload capabilities
Yuanhan Liu
yuanhan.liu at linux.intel.com
Wed Nov 11 09:44:19 CET 2015
On Wed, Nov 11, 2015 at 08:38:29AM +0000, Liu, Jijiang wrote:
>
>
> > -----Original Message-----
> > From: Yuanhan Liu [mailto:yuanhan.liu at linux.intel.com]
> > Sent: Wednesday, November 11, 2015 4:31 PM
> > To: Liu, Jijiang; Michael S. Tsirkin
> > Cc: dev at dpdk.org
> > Subject: Re: [dpdk-dev] [PATCH v4 7/8] virtio/lib:add virtio guest offload
> > capabilities
> >
> > On Wed, Nov 11, 2015 at 02:40:45PM +0800, Jijiang Liu wrote:
> > > Add virtio guest offload capabilities.
> > >
> > > Signed-off-by: Jijiang Liu <jijiang.liu at intel.com>
> > > ---
> > > lib/librte_vhost/virtio-net.c | 5 ++++-
> > > 1 files changed, 4 insertions(+), 1 deletions(-)
> > >
> > > diff --git a/lib/librte_vhost/virtio-net.c
> > > b/lib/librte_vhost/virtio-net.c index 81bd309..839a333 100644
> > > --- a/lib/librte_vhost/virtio-net.c
> > > +++ b/lib/librte_vhost/virtio-net.c
> > > @@ -80,7 +80,10 @@ static struct virtio_net_config_ll *ll_root;
> > > (1ULL <<
> > VHOST_USER_F_PROTOCOL_FEATURES) | \
> > > (1ULL << VIRTIO_NET_F_HOST_TSO4) | \
> > > (1ULL << VIRTIO_NET_F_HOST_TSO6) | \
> > > - (1ULL << VIRTIO_NET_F_CSUM))
> > > + (1ULL << VIRTIO_NET_F_CSUM) | \
> > > + (1ULL << VIRTIO_NET_F_GUEST_CSUM) | \
> > > + (1ULL << VIRTIO_NET_F_GUEST_TSO4) | \
> > > + (1ULL << VIRTIO_NET_F_GUEST_TSO6))
> >
> > I don't think we need that, and it might be wrong to set those fields at vhost.
> >
> > And, TBH, I am not 100% sure that I understand what those flags truely are
> > and for. All I know is that they seem have something to do with QEMU/TAP
> > device.
>
> According to virtio standard, those fileds should be set.
If so, you'd better quote them here, or even to your patch commit.
--yliu
> Yes, I'd like to listen other guys comments.
>
> > Hopefully the virtio expert, Michael, could shine some lights on that.
> >
> > --yliu
> >
> > >
> > > static uint64_t VHOST_FEATURES = VHOST_SUPPORTED_FEATURES;
> > >
> > > --
> > > 1.7.7.6
More information about the dev
mailing list