libc/kernel/uapi/linux/ublk_cmd.h - platform/bionic - Git at Google


            
            /*

            
             * This file is auto-generated. Modifications will be lost.

            
             *

            
             * See https://android.googlesource.com/platform/bionic/+/master/libc/kernel/

            
             * for more information.

            
             */

            
            #ifndef USER_BLK_DRV_CMD_INC_H

            
            #define USER_BLK_DRV_CMD_INC_H

            
            #include <linux/types.h>

            
            #define UBLK_CMD_GET_QUEUE_AFFINITY 0x01

            
            #define UBLK_CMD_GET_DEV_INFO 0x02

            
            #define UBLK_CMD_ADD_DEV 0x04

            
            #define UBLK_CMD_DEL_DEV 0x05

            
            #define UBLK_CMD_START_DEV 0x06

            
            #define UBLK_CMD_STOP_DEV 0x07

            
            #define UBLK_CMD_SET_PARAMS 0x08

            
            #define UBLK_CMD_GET_PARAMS 0x09

            
            #define UBLK_CMD_START_USER_RECOVERY 0x10

            
            #define UBLK_CMD_END_USER_RECOVERY 0x11

            
            #define UBLK_CMD_GET_DEV_INFO2 0x12

            
            #define UBLK_U_CMD_GET_QUEUE_AFFINITY _IOR('u', UBLK_CMD_GET_QUEUE_AFFINITY, struct ublksrv_ctrl_cmd)

            
            #define UBLK_U_CMD_GET_DEV_INFO _IOR('u', UBLK_CMD_GET_DEV_INFO, struct ublksrv_ctrl_cmd)

            
            #define UBLK_U_CMD_ADD_DEV _IOWR('u', UBLK_CMD_ADD_DEV, struct ublksrv_ctrl_cmd)

            
            #define UBLK_U_CMD_DEL_DEV _IOWR('u', UBLK_CMD_DEL_DEV, struct ublksrv_ctrl_cmd)

            
            #define UBLK_U_CMD_START_DEV _IOWR('u', UBLK_CMD_START_DEV, struct ublksrv_ctrl_cmd)

            
            #define UBLK_U_CMD_STOP_DEV _IOWR('u', UBLK_CMD_STOP_DEV, struct ublksrv_ctrl_cmd)

            
            #define UBLK_U_CMD_SET_PARAMS _IOWR('u', UBLK_CMD_SET_PARAMS, struct ublksrv_ctrl_cmd)

            
            #define UBLK_U_CMD_GET_PARAMS _IOR('u', UBLK_CMD_GET_PARAMS, struct ublksrv_ctrl_cmd)

            
            #define UBLK_U_CMD_START_USER_RECOVERY _IOWR('u', UBLK_CMD_START_USER_RECOVERY, struct ublksrv_ctrl_cmd)

            
            #define UBLK_U_CMD_END_USER_RECOVERY _IOWR('u', UBLK_CMD_END_USER_RECOVERY, struct ublksrv_ctrl_cmd)

            
            #define UBLK_U_CMD_GET_DEV_INFO2 _IOR('u', UBLK_CMD_GET_DEV_INFO2, struct ublksrv_ctrl_cmd)

            
            #define UBLK_U_CMD_GET_FEATURES _IOR('u', 0x13, struct ublksrv_ctrl_cmd)

            
            #define UBLK_U_CMD_DEL_DEV_ASYNC _IOR('u', 0x14, struct ublksrv_ctrl_cmd)

            
            #define UBLK_U_CMD_UPDATE_SIZE _IOWR('u', 0x15, struct ublksrv_ctrl_cmd)

            
            #define UBLK_U_CMD_QUIESCE_DEV _IOWR('u', 0x16, struct ublksrv_ctrl_cmd)

            
            #define UBLK_FEATURES_LEN 8

            
            #define UBLK_IO_FETCH_REQ 0x20

            
            #define UBLK_IO_COMMIT_AND_FETCH_REQ 0x21

            
            #define UBLK_IO_NEED_GET_DATA 0x22

            
            #define UBLK_U_IO_FETCH_REQ _IOWR('u', UBLK_IO_FETCH_REQ, struct ublksrv_io_cmd)

            
            #define UBLK_U_IO_COMMIT_AND_FETCH_REQ _IOWR('u', UBLK_IO_COMMIT_AND_FETCH_REQ, struct ublksrv_io_cmd)

            
            #define UBLK_U_IO_NEED_GET_DATA _IOWR('u', UBLK_IO_NEED_GET_DATA, struct ublksrv_io_cmd)

            
            #define UBLK_U_IO_REGISTER_IO_BUF _IOWR('u', 0x23, struct ublksrv_io_cmd)

            
            #define UBLK_U_IO_UNREGISTER_IO_BUF _IOWR('u', 0x24, struct ublksrv_io_cmd)

            
            #define UBLK_IO_RES_OK 0

            
            #define UBLK_IO_RES_NEED_GET_DATA 1

            
            #define UBLK_IO_RES_ABORT (- ENODEV)

            
            #define UBLKSRV_CMD_BUF_OFFSET 0

            
            #define UBLKSRV_IO_BUF_OFFSET 0x80000000

            
            #define UBLK_MAX_QUEUE_DEPTH 4096

            
            #define UBLK_IO_BUF_OFF 0

            
            #define UBLK_IO_BUF_BITS 25

            
            #define UBLK_IO_BUF_BITS_MASK ((1ULL << UBLK_IO_BUF_BITS) - 1)

            
            #define UBLK_TAG_OFF UBLK_IO_BUF_BITS

            
            #define UBLK_TAG_BITS 16

            
            #define UBLK_TAG_BITS_MASK ((1ULL << UBLK_TAG_BITS) - 1)

            
            #define UBLK_QID_OFF (UBLK_TAG_OFF + UBLK_TAG_BITS)

            
            #define UBLK_QID_BITS 12

            
            #define UBLK_QID_BITS_MASK ((1ULL << UBLK_QID_BITS) - 1)

            
            #define UBLK_MAX_NR_QUEUES (1U << UBLK_QID_BITS)

            
            #define UBLKSRV_IO_BUF_TOTAL_BITS (UBLK_QID_OFF + UBLK_QID_BITS)

            
            #define UBLKSRV_IO_BUF_TOTAL_SIZE (1ULL << UBLKSRV_IO_BUF_TOTAL_BITS)

            
            #define UBLK_F_SUPPORT_ZERO_COPY (1ULL << 0)

            
            #define UBLK_F_URING_CMD_COMP_IN_TASK (1ULL << 1)

            
            #define UBLK_F_NEED_GET_DATA (1UL << 2)

            
            #define UBLK_F_USER_RECOVERY (1UL << 3)

            
            #define UBLK_F_USER_RECOVERY_REISSUE (1UL << 4)

            
            #define UBLK_F_UNPRIVILEGED_DEV (1UL << 5)

            
            #define UBLK_F_CMD_IOCTL_ENCODE (1UL << 6)

            
            #define UBLK_F_USER_COPY (1UL << 7)

            
            #define UBLK_F_ZONED (1ULL << 8)

            
            #define UBLK_F_USER_RECOVERY_FAIL_IO (1ULL << 9)

            
            #define UBLK_F_UPDATE_SIZE (1ULL << 10)

            
            #define UBLK_F_AUTO_BUF_REG (1ULL << 11)

            
            #define UBLK_F_QUIESCE (1ULL << 12)

            
            #define UBLK_F_PER_IO_DAEMON (1ULL << 13)

            
            #define UBLK_F_BUF_REG_OFF_DAEMON (1ULL << 14)

            
            #define UBLK_S_DEV_DEAD 0

            
            #define UBLK_S_DEV_LIVE 1

            
            #define UBLK_S_DEV_QUIESCED 2

            
            #define UBLK_S_DEV_FAIL_IO 3

            
            struct ublksrv_ctrl_cmd {

            
              __u32 dev_id;

            
              __u16 queue_id;

            
              __u16 len;

            
              __u64 addr;

            
              __u64 data[1];

            
              __u16 dev_path_len;

            
              __u16 pad;

            
              __u32 reserved;

            
            };

            
            struct ublksrv_ctrl_dev_info {

            
              __u16 nr_hw_queues;

            
              __u16 queue_depth;

            
              __u16 state;

            
              __u16 pad0;

            
              __u32 max_io_buf_bytes;

            
              __u32 dev_id;

            
              __s32 ublksrv_pid;

            
              __u32 pad1;

            
              __u64 flags;

            
              __u64 ublksrv_flags;

            
              __u32 owner_uid;

            
              __u32 owner_gid;

            
              __u64 reserved1;

            
              __u64 reserved2;

            
            };

            
            #define UBLK_IO_OP_READ 0

            
            #define UBLK_IO_OP_WRITE 1

            
            #define UBLK_IO_OP_FLUSH 2

            
            #define UBLK_IO_OP_DISCARD 3

            
            #define UBLK_IO_OP_WRITE_SAME 4

            
            #define UBLK_IO_OP_WRITE_ZEROES 5

            
            #define UBLK_IO_OP_ZONE_OPEN 10

            
            #define UBLK_IO_OP_ZONE_CLOSE 11

            
            #define UBLK_IO_OP_ZONE_FINISH 12

            
            #define UBLK_IO_OP_ZONE_APPEND 13

            
            #define UBLK_IO_OP_ZONE_RESET_ALL 14

            
            #define UBLK_IO_OP_ZONE_RESET 15

            
            #define UBLK_IO_OP_REPORT_ZONES 18

            
            #define UBLK_IO_F_FAILFAST_DEV (1U << 8)

            
            #define UBLK_IO_F_FAILFAST_TRANSPORT (1U << 9)

            
            #define UBLK_IO_F_FAILFAST_DRIVER (1U << 10)

            
            #define UBLK_IO_F_META (1U << 11)

            
            #define UBLK_IO_F_FUA (1U << 13)

            
            #define UBLK_IO_F_NOUNMAP (1U << 15)

            
            #define UBLK_IO_F_SWAP (1U << 16)

            
            #define UBLK_IO_F_NEED_REG_BUF (1U << 17)

            
            struct ublksrv_io_desc {

            
              __u32 op_flags;

            
              union {

            
                __u32 nr_sectors;

            
                __u32 nr_zones;

            
              };

            
              __u64 start_sector;

            
              __u64 addr;

            
            };

            
            #define UBLK_AUTO_BUF_REG_FALLBACK (1 << 0)

            
            #define UBLK_AUTO_BUF_REG_F_MASK UBLK_AUTO_BUF_REG_FALLBACK

            
            struct ublk_auto_buf_reg {

            
              __u16 index;

            
              __u8 flags;

            
              __u8 reserved0;

            
              __u32 reserved1;

            
            };

            
            struct ublksrv_io_cmd {

            
              __u16 q_id;

            
              __u16 tag;

            
              __s32 result;

            
              union {

            
                __u64 addr;

            
                __u64 zone_append_lba;

            
              };

            
            };

            
            struct ublk_param_basic {

            
            #define UBLK_ATTR_READ_ONLY (1 << 0)

            
            #define UBLK_ATTR_ROTATIONAL (1 << 1)

            
            #define UBLK_ATTR_VOLATILE_CACHE (1 << 2)

            
            #define UBLK_ATTR_FUA (1 << 3)

            
              __u32 attrs;

            
              __u8 logical_bs_shift;

            
              __u8 physical_bs_shift;

            
              __u8 io_opt_shift;

            
              __u8 io_min_shift;

            
              __u32 max_sectors;

            
              __u32 chunk_sectors;

            
              __u64 dev_sectors;

            
              __u64 virt_boundary_mask;

            
            };

            
            struct ublk_param_discard {

            
              __u32 discard_alignment;

            
              __u32 discard_granularity;

            
              __u32 max_discard_sectors;

            
              __u32 max_write_zeroes_sectors;

            
              __u16 max_discard_segments;

            
              __u16 reserved0;

            
            };

            
            struct ublk_param_devt {

            
              __u32 char_major;

            
              __u32 char_minor;

            
              __u32 disk_major;

            
              __u32 disk_minor;

            
            };

            
            struct ublk_param_zoned {

            
              __u32 max_open_zones;

            
              __u32 max_active_zones;

            
              __u32 max_zone_append_sectors;

            
              __u8 reserved[20];

            
            };

            
            struct ublk_param_dma_align {

            
              __u32 alignment;

            
              __u8 pad[4];

            
            };

            
            #define UBLK_MIN_SEGMENT_SIZE 4096

            
            struct ublk_param_segment {

            
              __u64 seg_boundary_mask;

            
              __u32 max_segment_size;

            
              __u16 max_segments;

            
              __u8 pad[2];

            
            };

            
            struct ublk_params {

            
              __u32 len;

            
            #define UBLK_PARAM_TYPE_BASIC (1 << 0)

            
            #define UBLK_PARAM_TYPE_DISCARD (1 << 1)

            
            #define UBLK_PARAM_TYPE_DEVT (1 << 2)

            
            #define UBLK_PARAM_TYPE_ZONED (1 << 3)

            
            #define UBLK_PARAM_TYPE_DMA_ALIGN (1 << 4)

            
            #define UBLK_PARAM_TYPE_SEGMENT (1 << 5)

            
              __u32 types;

            
              struct ublk_param_basic basic;

            
              struct ublk_param_discard discard;

            
              struct ublk_param_devt devt;

            
              struct ublk_param_zoned zoned;

            
              struct ublk_param_dma_align dma;

            
              struct ublk_param_segment seg;

            
            };

            
            #endif
	/*
	* This file is auto-generated. Modifications will be lost.
	*
	* See https://android.googlesource.com/platform/bionic/+/master/libc/kernel/
	* for more information.
	*/
	#ifndef USER_BLK_DRV_CMD_INC_H
	#define USER_BLK_DRV_CMD_INC_H
	#include <linux/types.h>
	#define UBLK_CMD_GET_QUEUE_AFFINITY 0x01
	#define UBLK_CMD_GET_DEV_INFO 0x02
	#define UBLK_CMD_ADD_DEV 0x04
	#define UBLK_CMD_DEL_DEV 0x05
	#define UBLK_CMD_START_DEV 0x06
	#define UBLK_CMD_STOP_DEV 0x07
	#define UBLK_CMD_SET_PARAMS 0x08
	#define UBLK_CMD_GET_PARAMS 0x09
	#define UBLK_CMD_START_USER_RECOVERY 0x10
	#define UBLK_CMD_END_USER_RECOVERY 0x11
	#define UBLK_CMD_GET_DEV_INFO2 0x12
	#define UBLK_U_CMD_GET_QUEUE_AFFINITY _IOR('u', UBLK_CMD_GET_QUEUE_AFFINITY, struct ublksrv_ctrl_cmd)
	#define UBLK_U_CMD_GET_DEV_INFO _IOR('u', UBLK_CMD_GET_DEV_INFO, struct ublksrv_ctrl_cmd)
	#define UBLK_U_CMD_ADD_DEV _IOWR('u', UBLK_CMD_ADD_DEV, struct ublksrv_ctrl_cmd)
	#define UBLK_U_CMD_DEL_DEV _IOWR('u', UBLK_CMD_DEL_DEV, struct ublksrv_ctrl_cmd)
	#define UBLK_U_CMD_START_DEV _IOWR('u', UBLK_CMD_START_DEV, struct ublksrv_ctrl_cmd)
	#define UBLK_U_CMD_STOP_DEV _IOWR('u', UBLK_CMD_STOP_DEV, struct ublksrv_ctrl_cmd)
	#define UBLK_U_CMD_SET_PARAMS _IOWR('u', UBLK_CMD_SET_PARAMS, struct ublksrv_ctrl_cmd)
	#define UBLK_U_CMD_GET_PARAMS _IOR('u', UBLK_CMD_GET_PARAMS, struct ublksrv_ctrl_cmd)
	#define UBLK_U_CMD_START_USER_RECOVERY _IOWR('u', UBLK_CMD_START_USER_RECOVERY, struct ublksrv_ctrl_cmd)
	#define UBLK_U_CMD_END_USER_RECOVERY _IOWR('u', UBLK_CMD_END_USER_RECOVERY, struct ublksrv_ctrl_cmd)
	#define UBLK_U_CMD_GET_DEV_INFO2 _IOR('u', UBLK_CMD_GET_DEV_INFO2, struct ublksrv_ctrl_cmd)
	#define UBLK_U_CMD_GET_FEATURES _IOR('u', 0x13, struct ublksrv_ctrl_cmd)
	#define UBLK_U_CMD_DEL_DEV_ASYNC _IOR('u', 0x14, struct ublksrv_ctrl_cmd)
	#define UBLK_U_CMD_UPDATE_SIZE _IOWR('u', 0x15, struct ublksrv_ctrl_cmd)
	#define UBLK_U_CMD_QUIESCE_DEV _IOWR('u', 0x16, struct ublksrv_ctrl_cmd)
	#define UBLK_FEATURES_LEN 8
	#define UBLK_IO_FETCH_REQ 0x20
	#define UBLK_IO_COMMIT_AND_FETCH_REQ 0x21
	#define UBLK_IO_NEED_GET_DATA 0x22
	#define UBLK_U_IO_FETCH_REQ _IOWR('u', UBLK_IO_FETCH_REQ, struct ublksrv_io_cmd)
	#define UBLK_U_IO_COMMIT_AND_FETCH_REQ _IOWR('u', UBLK_IO_COMMIT_AND_FETCH_REQ, struct ublksrv_io_cmd)
	#define UBLK_U_IO_NEED_GET_DATA _IOWR('u', UBLK_IO_NEED_GET_DATA, struct ublksrv_io_cmd)
	#define UBLK_U_IO_REGISTER_IO_BUF _IOWR('u', 0x23, struct ublksrv_io_cmd)
	#define UBLK_U_IO_UNREGISTER_IO_BUF _IOWR('u', 0x24, struct ublksrv_io_cmd)
	#define UBLK_IO_RES_OK 0
	#define UBLK_IO_RES_NEED_GET_DATA 1
	#define UBLK_IO_RES_ABORT (- ENODEV)
	#define UBLKSRV_CMD_BUF_OFFSET 0
	#define UBLKSRV_IO_BUF_OFFSET 0x80000000
	#define UBLK_MAX_QUEUE_DEPTH 4096
	#define UBLK_IO_BUF_OFF 0
	#define UBLK_IO_BUF_BITS 25
	#define UBLK_IO_BUF_BITS_MASK ((1ULL << UBLK_IO_BUF_BITS) - 1)
	#define UBLK_TAG_OFF UBLK_IO_BUF_BITS
	#define UBLK_TAG_BITS 16
	#define UBLK_TAG_BITS_MASK ((1ULL << UBLK_TAG_BITS) - 1)
	#define UBLK_QID_OFF (UBLK_TAG_OFF + UBLK_TAG_BITS)
	#define UBLK_QID_BITS 12
	#define UBLK_QID_BITS_MASK ((1ULL << UBLK_QID_BITS) - 1)
	#define UBLK_MAX_NR_QUEUES (1U << UBLK_QID_BITS)
	#define UBLKSRV_IO_BUF_TOTAL_BITS (UBLK_QID_OFF + UBLK_QID_BITS)
	#define UBLKSRV_IO_BUF_TOTAL_SIZE (1ULL << UBLKSRV_IO_BUF_TOTAL_BITS)
	#define UBLK_F_SUPPORT_ZERO_COPY (1ULL << 0)
	#define UBLK_F_URING_CMD_COMP_IN_TASK (1ULL << 1)
	#define UBLK_F_NEED_GET_DATA (1UL << 2)
	#define UBLK_F_USER_RECOVERY (1UL << 3)
	#define UBLK_F_USER_RECOVERY_REISSUE (1UL << 4)
	#define UBLK_F_UNPRIVILEGED_DEV (1UL << 5)
	#define UBLK_F_CMD_IOCTL_ENCODE (1UL << 6)
	#define UBLK_F_USER_COPY (1UL << 7)
	#define UBLK_F_ZONED (1ULL << 8)
	#define UBLK_F_USER_RECOVERY_FAIL_IO (1ULL << 9)
	#define UBLK_F_UPDATE_SIZE (1ULL << 10)
	#define UBLK_F_AUTO_BUF_REG (1ULL << 11)
	#define UBLK_F_QUIESCE (1ULL << 12)
	#define UBLK_F_PER_IO_DAEMON (1ULL << 13)
	#define UBLK_F_BUF_REG_OFF_DAEMON (1ULL << 14)
	#define UBLK_S_DEV_DEAD 0
	#define UBLK_S_DEV_LIVE 1
	#define UBLK_S_DEV_QUIESCED 2
	#define UBLK_S_DEV_FAIL_IO 3
	struct ublksrv_ctrl_cmd {
	__u32 dev_id;
	__u16 queue_id;
	__u16 len;
	__u64 addr;
	__u64 data[1];
	__u16 dev_path_len;
	__u16 pad;
	__u32 reserved;
	};
	struct ublksrv_ctrl_dev_info {
	__u16 nr_hw_queues;
	__u16 queue_depth;
	__u16 state;
	__u16 pad0;
	__u32 max_io_buf_bytes;
	__u32 dev_id;
	__s32 ublksrv_pid;
	__u32 pad1;
	__u64 flags;
	__u64 ublksrv_flags;
	__u32 owner_uid;
	__u32 owner_gid;
	__u64 reserved1;
	__u64 reserved2;
	};
	#define UBLK_IO_OP_READ 0
	#define UBLK_IO_OP_WRITE 1
	#define UBLK_IO_OP_FLUSH 2
	#define UBLK_IO_OP_DISCARD 3
	#define UBLK_IO_OP_WRITE_SAME 4
	#define UBLK_IO_OP_WRITE_ZEROES 5
	#define UBLK_IO_OP_ZONE_OPEN 10
	#define UBLK_IO_OP_ZONE_CLOSE 11
	#define UBLK_IO_OP_ZONE_FINISH 12
	#define UBLK_IO_OP_ZONE_APPEND 13
	#define UBLK_IO_OP_ZONE_RESET_ALL 14
	#define UBLK_IO_OP_ZONE_RESET 15
	#define UBLK_IO_OP_REPORT_ZONES 18
	#define UBLK_IO_F_FAILFAST_DEV (1U << 8)
	#define UBLK_IO_F_FAILFAST_TRANSPORT (1U << 9)
	#define UBLK_IO_F_FAILFAST_DRIVER (1U << 10)
	#define UBLK_IO_F_META (1U << 11)
	#define UBLK_IO_F_FUA (1U << 13)
	#define UBLK_IO_F_NOUNMAP (1U << 15)
	#define UBLK_IO_F_SWAP (1U << 16)
	#define UBLK_IO_F_NEED_REG_BUF (1U << 17)
	struct ublksrv_io_desc {
	__u32 op_flags;
	union {
	__u32 nr_sectors;
	__u32 nr_zones;
	};
	__u64 start_sector;
	__u64 addr;
	};
	#define UBLK_AUTO_BUF_REG_FALLBACK (1 << 0)
	#define UBLK_AUTO_BUF_REG_F_MASK UBLK_AUTO_BUF_REG_FALLBACK
	struct ublk_auto_buf_reg {
	__u16 index;
	__u8 flags;
	__u8 reserved0;
	__u32 reserved1;
	};
	struct ublksrv_io_cmd {
	__u16 q_id;
	__u16 tag;
	__s32 result;
	union {
	__u64 addr;
	__u64 zone_append_lba;
	};
	};
	struct ublk_param_basic {
	#define UBLK_ATTR_READ_ONLY (1 << 0)
	#define UBLK_ATTR_ROTATIONAL (1 << 1)
	#define UBLK_ATTR_VOLATILE_CACHE (1 << 2)
	#define UBLK_ATTR_FUA (1 << 3)
	__u32 attrs;
	__u8 logical_bs_shift;
	__u8 physical_bs_shift;
	__u8 io_opt_shift;
	__u8 io_min_shift;
	__u32 max_sectors;
	__u32 chunk_sectors;
	__u64 dev_sectors;
	__u64 virt_boundary_mask;
	};
	struct ublk_param_discard {
	__u32 discard_alignment;
	__u32 discard_granularity;
	__u32 max_discard_sectors;
	__u32 max_write_zeroes_sectors;
	__u16 max_discard_segments;
	__u16 reserved0;
	};
	struct ublk_param_devt {
	__u32 char_major;
	__u32 char_minor;
	__u32 disk_major;
	__u32 disk_minor;
	};
	struct ublk_param_zoned {
	__u32 max_open_zones;
	__u32 max_active_zones;
	__u32 max_zone_append_sectors;
	__u8 reserved[20];
	};
	struct ublk_param_dma_align {
	__u32 alignment;
	__u8 pad[4];
	};
	#define UBLK_MIN_SEGMENT_SIZE 4096
	struct ublk_param_segment {
	__u64 seg_boundary_mask;
	__u32 max_segment_size;
	__u16 max_segments;
	__u8 pad[2];
	};
	struct ublk_params {
	__u32 len;
	#define UBLK_PARAM_TYPE_BASIC (1 << 0)
	#define UBLK_PARAM_TYPE_DISCARD (1 << 1)
	#define UBLK_PARAM_TYPE_DEVT (1 << 2)
	#define UBLK_PARAM_TYPE_ZONED (1 << 3)
	#define UBLK_PARAM_TYPE_DMA_ALIGN (1 << 4)
	#define UBLK_PARAM_TYPE_SEGMENT (1 << 5)
	__u32 types;
	struct ublk_param_basic basic;
	struct ublk_param_discard discard;
	struct ublk_param_devt devt;
	struct ublk_param_zoned zoned;
	struct ublk_param_dma_align dma;
	struct ublk_param_segment seg;
	};
	#endif