On Tue, Aug 30, 2016 at 09:57:39AM +0200, Maxime Coquelin wrote:
> Hi Souvik,
>
> On 08/30/2016 01:02 AM, souvikdey33 wrote:
> >Signed-off-by: Souvik Dey <sodey at sonusnet.com>
> >
> >Fixes: 1fb8e8896ca8 ("Signed-off-by: Souvik Dey <sodey at sonusnet.com>")
> >Reviewed-by: Stephen Hemminger <stephen at networkplumber.org>
> >
> >Virtio interfaces should also support setting of mtu, as in case of cloud
> >it is expected to have the consistent mtu across the infrastructure that
> >the dhcp server sends and not hardcoded to 1500(default).
> >---
> > drivers/net/virtio/virtio_ethdev.c | 12 ++++++++++++
> > 1 file changed, 12 insertions(+)
>
> FYI, there are some on-going changes in the VIRTIO specification
> so that the VHOST interface exposes its MTU to its VIRTIO peer.
> It may also be used as an alternative of what you patch achieves.
>
> I am working on its implementation in Qemu/DPDK, our goal being to
> reduce performance drops for small packets with Rx mergeable buffers
> feature enabled.
Mind to educate me a bit on how that works?
--yliu
