[dpdk-dev] [PATCH v3 05/10] vdpa/sfc: add support to get VFIO device fd

[Xia, Chenbo]

> -----Original Message-----
> From: Vijay Srivastava <vijay.srivastava at xilinx.com>
> Sent: Friday, October 29, 2021 10:47 PM
> To: dev at dpdk.org
> Cc: maxime.coquelin at redhat.com; Xia, Chenbo <chenbo.xia at intel.com>;
> andrew.rybchenko at oktetlabs.ru; Vijay Kumar Srivastava <vsrivast at xilinx.com>
> Subject: [PATCH v3 05/10] vdpa/sfc: add support to get VFIO device fd
> 
> From: Vijay Kumar Srivastava <vsrivast at xilinx.com>
> 
> Implement vDPA ops get_vfio_device_fd to get the VFIO device fd.
> 
> Signed-off-by: Vijay Kumar Srivastava <vsrivast at xilinx.com>
> Acked-by: Andrew Rybchenko <andrew.rybchenko at oktetlabs.ru>
> Reviewed-by: Maxime Coquelin <maxime.coquelin at redhat.com>
> ---
>  drivers/vdpa/sfc/sfc_vdpa_ops.c | 24 ++++++++++++++++++++++++
>  1 file changed, 24 insertions(+)
> 
> diff --git a/drivers/vdpa/sfc/sfc_vdpa_ops.c b/drivers/vdpa/sfc/sfc_vdpa_ops.c
> index 6c702e1..5253adb 100644
> --- a/drivers/vdpa/sfc/sfc_vdpa_ops.c
> +++ b/drivers/vdpa/sfc/sfc_vdpa_ops.c
> @@ -145,6 +145,29 @@
>  	return -1;
>  }
> 
> +static int
> +sfc_vdpa_get_vfio_device_fd(int vid)
> +{
> +	struct rte_vdpa_device *vdpa_dev;
> +	struct sfc_vdpa_ops_data *ops_data;
> +	int vfio_dev_fd;
> +	void *dev;
> +
> +	vdpa_dev = rte_vhost_get_vdpa_device(vid);
> +
> +	ops_data = sfc_vdpa_get_data_by_dev(vdpa_dev);
> +	if (ops_data == NULL)
> +		return -1;
> +
> +	dev = ops_data->dev_handle;
> +	vfio_dev_fd = sfc_vdpa_adapter_by_dev_handle(dev)->vfio_dev_fd;
> +
> +	sfc_vdpa_info(dev, "vDPA ops get_vfio_device_fd :: vfio fd : %d",
> +		      vfio_dev_fd);
> +
> +	return vfio_dev_fd;
> +}
> +
>  static struct rte_vdpa_dev_ops sfc_vdpa_ops = {
>  	.get_queue_num = sfc_vdpa_get_queue_num,
>  	.get_features = sfc_vdpa_get_features,
> @@ -153,6 +176,7 @@
>  	.dev_close = sfc_vdpa_dev_close,
>  	.set_vring_state = sfc_vdpa_set_vring_state,
>  	.set_features = sfc_vdpa_set_features,
> +	.get_vfio_device_fd = sfc_vdpa_get_vfio_device_fd,
>  };
> 
>  struct sfc_vdpa_ops_data *
> --
> 1.8.3.1

Reviewed-by: Chenbo Xia <chenbo.xia at intel.com>