linux-kernel - Re: [RFC v2 -next 0/2] virtio-net: Advised MTU feature

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Date:	Wed, 16 Mar 2016 00:55:30 -0400 (EDT)
From:	Pankaj Gupta <pagupta@...hat.com>
To:	Aaron Conole <aconole@...hat.com>
Cc:	netdev@...r.kernel.org, "Michael S. Tsirkin" <mst@...hat.com>,
	virtualization@...ts.linux-foundation.org,
	linux-kernel@...r.kernel.org
Subject: Re: [RFC v2 -next 0/2] virtio-net: Advised MTU feature


> 
> The following series adds the ability for a hypervisor to set an MTU on the
> guest during feature negotiation phase. This is useful for VM orchestration
> when, for instance, tunneling is involved and the MTU of the various systems
> should be homogenous.
> 
> The first patch adds the feature bit as described in the proposed VFIO spec

You mean VIRTIO spec?

> addition found at
> https://lists.oasis-open.org/archives/virtio-dev/201603/msg00001.html
> 
> The second patch adds a user of the bit, and a warning when the guest changes
> the MTU from the hypervisor advised MTU. Future patches may add more thorough
> error handling.
> 
> v2:
> * Whitespace and code style cleanups from Sergei Shtylyov and Paolo Abeni
> * Additional test before printing a warning
> 
> Aaron Conole (2):
>   virtio: Start feature MTU support
>   virtio_net: Read the advised MTU
> 
>  drivers/net/virtio_net.c        | 12 ++++++++++++
>  include/uapi/linux/virtio_net.h |  3 +++
>  2 files changed, 15 insertions(+)
> 
> --
> 2.5.0
> 
>