Re: [RFC PATCH] virtio-net: use NETIF_F_GRO_HW instead of NETIF_F_LRO

[Jason Wang]

在 2021/8/12 上午6:17, Jakub Kicinski 写道:
> On Wed, 11 Aug 2021 16:16:23 +0800 Jason Wang wrote:
> > Try to fix this by using NETIF_F_GRO_HW instead so we're not
> > guaranteed to be re-segmented as original.
> This sentence may need rephrasing.


Right, actually, I meant:


Try to fix this by using NETIF_F_GRO_HW instead. But we're not sure the 
packet could be re-segmented to the exact original packet stream. Since 
it's really depends on the bakcend implementation.


> > Or we may want a new netdev
> > feature like RX_GSO since the guest offloads for virtio-net is
> > actually to receive GSO packet.
> >
> > Or we can try not advertise LRO is control guest offloads is not
> > enabled. This solves the warning but will still slow down the traffic.
> IMO gro-hw fits pretty well, patch looks good.


If the re-segmentation is not a issue. I will post a formal patch.

Thanks


>