Re: [PATCH V2 5/5] vdpasim: vDPA device simulator

[Jason Wang]

On 2020/2/10 äå7:23, Michael S. Tsirkin wrote:
> On Mon, Feb 10, 2020 at 11:56:08AM +0800, Jason Wang wrote:
> > This patch implements a software vDPA networking device. The datapath
> > is implemented through vringh and workqueue. The device has an on-chip
> > IOMMU which translates IOVA to PA. For kernel virtio drivers, vDPA
> > simulator driver provides dma_ops. For vhost driers, set_map() methods
> > of vdpa_config_ops is implemented to accept mappings from vhost.
> >
> > Currently, vDPA device simulator will loopback TX traffic to RX. So
> > the main use case for the device is vDPA feature testing, prototyping
> > and development.
> >
> > Note, there's no management API implemented, a vDPA device will be
> > registered once the module is probed. We need to handle this in the
> > future development.
> >
> > Signed-off-by: Jason Wang<jasowang@xxxxxxxxxx>
> > ---
> >   drivers/virtio/vdpa/Kconfig    |  17 +
> >   drivers/virtio/vdpa/Makefile   |   1 +
> >   drivers/virtio/vdpa/vdpa_sim.c | 678 +++++++++++++++++++++++++++++++++
> >   3 files changed, 696 insertions(+)
> >   create mode 100644 drivers/virtio/vdpa/vdpa_sim.c
> >
> > diff --git a/drivers/virtio/vdpa/Kconfig b/drivers/virtio/vdpa/Kconfig
> > index 7a99170e6c30..a7888974dda8 100644
> > --- a/drivers/virtio/vdpa/Kconfig
> > +++ b/drivers/virtio/vdpa/Kconfig
> > @@ -7,3 +7,20 @@ config VDPA
> >             datapath which complies with virtio specifications with
> >             vendor specific control path.
> >   
> > +menuconfig VDPA_MENU
> > +	bool "VDPA drivers"
> > +	default n
> > +
> > +if VDPA_MENU
> > +
> > +config VDPA_SIM
> > +	tristate "vDPA device simulator"
> > +        select VDPA
> > +        default n
> > +        help
> > +          vDPA networking device simulator which loop TX traffic back
> > +          to RX. This device is used for testing, prototyping and
> > +          development of vDPA.
> So how about we make this depend on RUNTIME_TESTING_MENU?

I'm not sure how much it can help but I can do that in next version.

Thanks

RUNTIME_TESTING_MENU