[dpdk-dev] [PATCH RFC 1/2] vhost: make capabilities configurable

[Wang, Zhihong]

Hi Maxime,

> -----Original Message-----
> From: Maxime Coquelin [mailto:maxime.coquelin at redhat.com]
> Sent: Tuesday, January 30, 2018 11:00 PM
> To: Wang, Zhihong <zhihong.wang at intel.com>; dev at dpdk.org
> Cc: Tan, Jianfeng <jianfeng.tan at intel.com>; Bie, Tiwei
> <tiwei.bie at intel.com>; yliu at fridaylinux.org; Liang, Cunming
> <cunming.liang at intel.com>; Wang, Xiao W <xiao.w.wang at intel.com>; Daly,
> Dan <dan.daly at intel.com>
> Subject: Re: [PATCH RFC 1/2] vhost: make capabilities configurable
> 
> Hi Zhihong
> 
> On 12/23/2017 04:36 AM, Zhihong Wang wrote:
> > This patch makes vhost device capabilities configurable to adopt various
> > engines. Such capabilities include supported features, protocol features,
> > queue number. APIs are introduced to let app configure these capabilities.
> 
> Why does the vDPA driver need to mask protocol features?

Different vhost devices may support different combinations of protocol
features, e.g. One may not support MQ, or RARP. So it should be reported
by the device.

Thanks
-Zhihong

> 
> Maxime