[dpdk-dev] [PATCH v3 01/11] vhost: advertise support in-order feature

[Maxime Coquelin]

On 06/28/2018 11:52 PM, Marvin Liu wrote:
> If devices always use descriptors in the same order in which they have
> been made available. These devices can offer the VIRTIO_F_IN_ORDER
> feature. If negotiated, this knowledge allows devices to notify the use
> of a batch of buffers to virtio driver by only writing used ring index.
> 
> Vhost user device has supported this feature by default. If vhost
> dequeue zero is enabled, should disable VIRTIO_F_IN_ORDER as vhost can’t
> assure that descriptors returned from NIC are in order.
> 
> Signed-off-by: Marvin Liu <yong.liu at intel.com>
> 

Reviewed-by: Maxime Coquelin <maxime.coquelin at redhat.com>

Thanks,
Maxime