Sergei Shtylyov <sergei.shtylyov@xxxxxxxxxxxxxxxxxx> writes:
> Hello.
>
> On 3/16/2016 12:04 AM, Aaron Conole wrote:
>
>> This patch checks the feature bit for the VIRTIO_NET_F_MTU feature. If it
>> exists, read the advised MTU and use it.
>>
>> No proper error handling is provided for the case where a user changes the
>> negotiated MTU. A future commit will add proper error handling. Instead, a
>> warning is emitted if the guest changes the device MTU after previously
>> being given advice.
>>
>> Signed-off-by: Aaron Conole <aconole@xxxxxxxxxx>
>> ---
>> v2:
>> * Whitespace cleanup in the last hunk
>> * Code style change around the pr_warn
>> * Additional test for mtu change before printing warning
>>
>> drivers/net/virtio_net.c | 12 ++++++++++++
>> 1 file changed, 12 insertions(+)
>>
>> diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c
>> index 767ab11..429fe01 100644
>> --- a/drivers/net/virtio_net.c
>> +++ b/drivers/net/virtio_net.c
> [...]
>> @@ -1390,8 +1391,11 @@ static const struct ethtool_ops virtnet_ethtool_ops = {
>>
>> static int virtnet_change_mtu(struct net_device *dev, int new_mtu)
>> {
>> + struct virtnet_info *vi = netdev_priv(dev);
>> if (new_mtu < MIN_MTU || new_mtu > MAX_MTU)
>> return -EINVAL;
>> + if ((vi->negotiated_mtu) && (dev->mtu != new_mtu))
>
> Inner parens not needed, please be consistent with the code above.
Okay, I will do that.
Thanks so much for the review (again), Sergei!
-Aaron
> [...]
>
> MBR, Sergei
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