Re: [RFC 2/4] vduse: Introduce VDUSE - vDPA Device in Userspace

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Mon, Oct 19, 2020 at 10:56:21PM +0800, Xie Yongji wrote:
> diff --git a/include/uapi/linux/vduse.h b/include/uapi/linux/vduse.h
> new file mode 100644
> index 000000000000..855d2116b3a6
> --- /dev/null
> +++ b/include/uapi/linux/vduse.h
> @@ -0,0 +1,85 @@
> +/* SPDX-License-Identifier: GPL-2.0 */
> +#ifndef _UAPI_VDUSE_H_
> +#define _UAPI_VDUSE_H_
> +
> +#include <linux/types.h>
> +
> +#define VDUSE_CONFIG_DATA_LEN	8
> +
> +enum vduse_req_type {
> +	VDUSE_SET_VQ_STATE,
> +	VDUSE_SET_FEATURES,
> +	VDUSE_GET_FEATURES,
> +	VDUSE_SET_STATUS,
> +	VDUSE_GET_STATUS,
> +	VDUSE_SET_CONFIG,
> +	VDUSE_GET_CONFIG,
> +};
> +
> +struct vduse_vq_state {
> +	__u32 index;
> +	__u32 num;
> +	__u64 desc_addr;
> +	__u64 driver_addr;
> +	__u64 device_addr;
> +	__u8 ready;
> +};
> +
> +struct vduse_dev_config_data {
> +	__u32 offset;
> +	__u32 len;
> +	__u8 data[VDUSE_CONFIG_DATA_LEN];
> +};
> +
> +struct vduse_dev_request {
> +	__u32 type;
> +	__u32 unique;
> +	__u32 flags;
> +	__u32 size;
> +	union {
> +		struct vduse_vq_state vq_state;
> +		struct vduse_dev_config_data config;
> +		__u64 features;
> +		__u8 status;
> +	};
> +};
> +
> +struct vduse_dev_response {
> +	__u32 unique;
> +	__s32 result;
> +	union {
> +		struct vduse_dev_config_data config;
> +		__u64 features;
> +		__u8 status;
> +	};
> +};
> +
> +/* ioctl */
> +
> +struct vduse_dev_config {
> +	__u32 id;
> +	__u32 vendor_id;
> +	__u32 device_id;
> +	__u64 iova_size;
> +	__u16 vq_num;
> +	__u16 vq_size_max;
> +	__u32 vq_align;
> +};
> +
> +struct vduse_vq_eventfd {
> +	__u32 index;
> +	__u32 fd;
> +};
> +
> +#define VDUSE_BASE	'V'
> +
> +#define VDUSE_CREATE_DEV	_IOW(VDUSE_BASE, 0x01, struct vduse_dev_config)
> +#define VDUSE_GET_DEV		_IO(VDUSE_BASE, 0x02)
> +#define VDUSE_DESTROY_DEV	_IO(VDUSE_BASE, 0x03)
> +
> +#define VDUSE_DEV_START		_IO(VDUSE_BASE, 0x04)
> +#define VDUSE_DEV_STOP		_IO(VDUSE_BASE, 0x05)
> +#define VDUSE_VQ_SETUP_KICKFD	_IOW(VDUSE_BASE, 0x06, struct vduse_vq_eventfd)
> +#define VDUSE_VQ_SETUP_IRQFD	_IOW(VDUSE_BASE, 0x07, struct vduse_vq_eventfd)
> +
> +#endif /* _UAPI_VDUSE_H_ */


Could we see some documentation about the user interface of this module please?

> -- 
> 2.25.1





[Index of Archives]     [Linux ARM Kernel]     [Linux ARM]     [Linux Omap]     [Fedora ARM]     [IETF Annouce]     [Bugtraq]     [Linux OMAP]     [Linux MIPS]     [eCos]     [Asterisk Internet PBX]     [Linux API]

  Powered by Linux