Hi Jason,
On Thu, Mar 26, 2020 at 3:07 PM Jason Wang <jasowang@xxxxxxxxxx> 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>
This is now commit 2c53d0f64c06f458 ("vdpasim: vDPA device simulator").
> --- a/drivers/virtio/vdpa/Kconfig
> +++ b/drivers/virtio/vdpa/Kconfig
> @@ -5,3 +5,22 @@ config VDPA
> Enable this module to support vDPA device that uses a
> datapath which complies with virtio specifications with
> vendor specific control path.
> +
> +menuconfig VDPA_MENU
> + bool "VDPA drivers"
> + default n
*
* VDPA drivers
*
VDPA drivers (VDPA_MENU) [N/y/?] (NEW) ?
There is no help available for this option.
Symbol: VDPA_MENU [=n]
Type : bool
Defined at drivers/vdpa/Kconfig:9
Prompt: VDPA drivers
Location:
-> Device Drivers
I think this deserves a help text, so users know if they want to enable this
option or not.
I had a quick look, but couldn't find the meaning of "vdpa" in the whole kernel
source tree.
Thanks!
> +
> +if VDPA_MENU
> +
> +config VDPA_SIM
> + tristate "vDPA device simulator"
> + depends on RUNTIME_TESTING_MENU
> + select VDPA
> + select VHOST_RING
> + 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.
> +
> +endif # VDPA_MENU
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
