.. c:type:: struct nvme_identify_args

   Arguments for the NVMe Identify command

**Definition**

::

  struct nvme_identify_args {
    __u32 *result;
    void *data;
    int args_size;
    int fd;
    __u32 timeout;
    enum nvme_identify_cns cns;
    enum nvme_csi csi;
    __u32 nsid;
    __u16 cntid;
    __u16 cns_specific_id;
    __u8 uuidx;
  };

**Members**

``result``
  The command completion result from CQE dword0

``data``
  User space destination address to transfer the data

``args_size``
  Size of :c:type:`struct nvme_identify_args <nvme_identify_args>`

``fd``
  File descriptor of nvme device

``timeout``
  Timeout in ms (0 for default timeout)

``cns``
  The Controller or Namespace structure, see **enum** nvme_identify_cns

``csi``
  Command Set Identifier

``nsid``
  Namespace identifier, if applicable

``cntid``
  The Controller Identifier, if applicable

``cns_specific_id``
  Identifier that is required for a particular CNS value

``uuidx``
  UUID Index if controller supports this id selection method





.. c:type:: struct nvme_get_log_args

   Arguments for the NVMe Admin Get Log command

**Definition**

::

  struct nvme_get_log_args {
    __u64 lpo;
    __u32 *result;
    void *log;
    int args_size;
    int fd;
    __u32 timeout;
    enum nvme_cmd_get_log_lid lid;
    __u32 len;
    __u32 nsid;
    enum nvme_csi csi;
    __u16 lsi;
    __u8 lsp;
    __u8 uuidx;
    bool rae;
    bool ot;
  };

**Members**

``lpo``
  Log page offset for partial log transfers

``result``
  The command completion result from CQE dword0

``log``
  User space destination address to transfer the data

``args_size``
  Length of the structure

``fd``
  File descriptor of nvme device

``timeout``
  Timeout in ms

``lid``
  Log page identifier, see :c:type:`enum nvme_cmd_get_log_lid <nvme_cmd_get_log_lid>` for known
  values

``len``
  Length of provided user buffer to hold the log data in bytes

``nsid``
  Namespace identifier, if applicable

``csi``
  Command set identifier, see :c:type:`enum nvme_csi <nvme_csi>` for known values

``lsi``
  Log Specific Identifier

``lsp``
  Log specific field

``uuidx``
  UUID selection, if supported

``rae``
  Retain asynchronous events

``ot``
  Offset Type; if set **lpo** specifies the index into the list
  of data structures, otherwise **lpo** specifies the byte offset
  into the log page.





.. c:type:: struct nvme_set_features_args

   Arguments for the NVMe Admin Set Feature command

**Definition**

::

  struct nvme_set_features_args {
    __u32 *result;
    void *data;
    int args_size;
    int fd;
    __u32 timeout;
    __u32 nsid;
    __u32 cdw11;
    __u32 cdw12;
    __u32 cdw13;
    __u32 cdw15;
    __u32 data_len;
    bool save;
    __u8 uuidx;
    __u8 fid;
  };

**Members**

``result``
  The command completion result from CQE dword0

``data``
  User address of feature data, if applicable

``args_size``
  Size of :c:type:`struct nvme_set_features_args <nvme_set_features_args>`

``fd``
  File descriptor of nvme device

``timeout``
  Timeout in ms

``nsid``
  Namespace ID, if applicable

``cdw11``
  Value to set the feature to

``cdw12``
  Feature specific command dword12 field

``cdw13``
  Feature specific command dword13 field

``cdw15``
  Feature specific command dword15 field

``data_len``
  Length of feature data, if applicable, in bytes

``save``
  Save value across power states

``uuidx``
  UUID Index for differentiating vendor specific encoding

``fid``
  Feature identifier





.. c:type:: struct nvme_get_features_args

   Arguments for the NVMe Admin Get Feature command

**Definition**

::

  struct nvme_get_features_args {
    __u32 *result;
    void *data;
    int args_size;
    int fd;
    __u32 timeout;
    __u32 nsid;
    enum nvme_get_features_sel sel;
    __u32 cdw11;
    __u32 data_len;
    __u8 fid;
    __u8 uuidx;
  };

**Members**

``result``
  The command completion result from CQE dword0

``data``
  User address of feature data, if applicable

``args_size``
  Size of :c:type:`struct nvme_get_features_args <nvme_get_features_args>`

``fd``
  File descriptor of nvme device

``timeout``
  Timeout in ms

``nsid``
  Namespace ID, if applicable

``sel``
  Select which type of attribute to return,
  see :c:type:`enum nvme_get_features_sel <nvme_get_features_sel>`

``cdw11``
  Feature specific command dword11 field

``data_len``
  Length of feature data, if applicable, in bytes

``fid``
  Feature identifier, see :c:type:`enum nvme_features_id <nvme_features_id>`

``uuidx``
  UUID Index for differentiating vendor specific encoding





.. c:type:: struct nvme_format_nvm_args

   Arguments for the Format Nvme Namespace command

**Definition**

::

  struct nvme_format_nvm_args {
    __u32 *result;
    int args_size;
    int fd;
    __u32 timeout;
    __u32 nsid;
    enum nvme_cmd_format_mset mset;
    enum nvme_cmd_format_pi pi;
    enum nvme_cmd_format_pil pil;
    enum nvme_cmd_format_ses ses;
    __u8 lbaf;
    __u8 rsvd1[7];
    __u8 lbafu;
  };

**Members**

``result``
  The command completion result from CQE dword0

``args_size``
  Size of :c:type:`struct nvme_format_nvm_args <nvme_format_nvm_args>`

``fd``
  File descriptor of nvme device

``timeout``
  Set to override default timeout to this value in milliseconds;
  useful for long running formats. 0 will use system default.

``nsid``
  Namespace ID to format

``mset``
  Metadata settings (extended or separated), true if extended

``pi``
  Protection information type

``pil``
  Protection information location (beginning or end), true if end

``ses``
  Secure erase settings

``lbaf``
  Logical block address format least significant 4 bits

``rsvd1``
  Reserved

``lbafu``
  Logical block address format most significant 2 bits





.. c:type:: struct nvme_ns_mgmt_args

   Arguments for NVMe Namespace Management command

**Definition**

::

  struct nvme_ns_mgmt_args {
    __u32 *result;
    struct nvme_id_ns *ns;
    int args_size;
    int fd;
    __u32 timeout;
    __u32 nsid;
    enum nvme_ns_mgmt_sel sel;
    __u8 csi;
    __u8 rsvd1[3];
    void *rsvd2;
    struct nvme_ns_mgmt_host_sw_specified *data;
  };

**Members**

``result``
  NVMe command result

``ns``
  Namespace identification descriptors

``args_size``
  Size of :c:type:`struct nvme_ns_mgmt_args <nvme_ns_mgmt_args>`

``fd``
  File descriptor of nvme device

``timeout``
  Timeout in ms

``nsid``
  Namespace identifier

``sel``
  Type of management operation to perform

``csi``
  Command Set Identifier

``rsvd1``
  Reserved

``rsvd2``
  Reserved

``data``
  Host Software Specified Fields





.. c:type:: struct nvme_ns_attach_args

   Arguments for Nvme Namespace Management command

**Definition**

::

  struct nvme_ns_attach_args {
    __u32 *result;
    struct nvme_ctrl_list *ctrlist;
    int args_size;
    int fd;
    __u32 timeout;
    __u32 nsid;
    enum nvme_ns_attach_sel sel;
  };

**Members**

``result``
  NVMe command result

``ctrlist``
  Controller list to modify attachment state of nsid

``args_size``
  Size of :c:type:`struct nvme_ns_attach_args <nvme_ns_attach_args>`

``fd``
  File descriptor of nvme device

``timeout``
  Timeout in ms

``nsid``
  Namespace ID to execute attach selection

``sel``
  Attachment selection, see :c:type:`enum nvme_ns_attach_sel <nvme_ns_attach_sel>`





.. c:type:: struct nvme_fw_download_args

   Arguments for the NVMe Firmware Download command

**Definition**

::

  struct nvme_fw_download_args {
    __u32 *result;
    void *data;
    int args_size;
    int fd;
    __u32 timeout;
    __u32 offset;
    __u32 data_len;
  };

**Members**

``result``
  The command completion result from CQE dword0

``data``
  Userspace address of the firmware data

``args_size``
  Size of :c:type:`struct nvme_fw_download_args <nvme_fw_download_args>`

``fd``
  File descriptor of nvme device

``timeout``
  Timeout in ms

``offset``
  Offset in the firmware data

``data_len``
  Length of data in this command in bytes





.. c:type:: struct nvme_fw_commit_args

   Arguments for the NVMe Firmware Commit command

**Definition**

::

  struct nvme_fw_commit_args {
    __u32 *result;
    int args_size;
    int fd;
    __u32 timeout;
    enum nvme_fw_commit_ca action;
    __u8 slot;
    bool bpid;
  };

**Members**

``result``
  The command completion result from CQE dword0

``args_size``
  Size of :c:type:`struct nvme_fw_commit_args <nvme_fw_commit_args>`

``fd``
  File descriptor of nvme device

``timeout``
  Timeout in ms

``action``
  Action to use for the firmware image, see :c:type:`enum nvme_fw_commit_ca <nvme_fw_commit_ca>`

``slot``
  Firmware slot to commit the downloaded image

``bpid``
  Set to true to select the boot partition id





.. c:type:: struct nvme_security_send_args

   Arguments for the NVMe Security Send command

**Definition**

::

  struct nvme_security_send_args {
    __u32 *result;
    void *data;
    int args_size;
    int fd;
    __u32 timeout;
    __u32 nsid;
    __u32 tl;
    __u32 data_len;
    __u8 nssf;
    __u8 spsp0;
    __u8 spsp1;
    __u8 secp;
  };

**Members**

``result``
  The command completion result from CQE dword0

``data``
  Security data payload to send

``args_size``
  Size of :c:type:`struct nvme_security_send_args <nvme_security_send_args>`

``fd``
  File descriptor of nvme device

``timeout``
  Timeout in ms

``nsid``
  Namespace ID to issue security command on

``tl``
  Protocol specific transfer length

``data_len``
  Data length of the payload in bytes

``nssf``
  NVMe Security Specific field

``spsp0``
  Security Protocol Specific field

``spsp1``
  Security Protocol Specific field

``secp``
  Security Protocol





.. c:type:: struct nvme_security_receive_args

   Arguments for the NVMe Security Receive command

**Definition**

::

  struct nvme_security_receive_args {
    __u32 *result;
    void *data;
    int args_size;
    int fd;
    __u32 timeout;
    __u32 nsid;
    __u32 al;
    __u32 data_len;
    __u8 nssf;
    __u8 spsp0;
    __u8 spsp1;
    __u8 secp;
  };

**Members**

``result``
  The command completion result from CQE dword0

``data``
  Security data payload to send

``args_size``
  Size of :c:type:`struct nvme_security_receive_args <nvme_security_receive_args>`

``fd``
  File descriptor of nvme device

``timeout``
  Timeout in ms

``nsid``
  Namespace ID to issue security command on

``al``
  Protocol specific allocation length

``data_len``
  Data length of the payload in bytes

``nssf``
  NVMe Security Specific field

``spsp0``
  Security Protocol Specific field

``spsp1``
  Security Protocol Specific field

``secp``
  Security Protocol





.. c:type:: struct nvme_get_lba_status_args

   Arguments for the NVMe Get LBA Status command

**Definition**

::

  struct nvme_get_lba_status_args {
    __u64 slba;
    __u32 *result;
    struct nvme_lba_status *lbas;
    int args_size;
    int fd;
    __u32 timeout;
    __u32 nsid;
    __u32 mndw;
    enum nvme_lba_status_atype atype;
    __u16 rl;
  };

**Members**

``slba``
  Starting logical block address to check statuses

``result``
  The command completion result from CQE dword0

``lbas``
  Data payload to return status descriptors

``args_size``
  Size of :c:type:`struct nvme_get_lba_status_args <nvme_get_lba_status_args>`

``fd``
  File descriptor of nvme device

``timeout``
  Timeout in ms

``nsid``
  Namespace ID to retrieve LBA status

``mndw``
  Maximum number of dwords to return

``atype``
  Action type mechanism to determine LBA status descriptors to
  return, see :c:type:`enum nvme_lba_status_atype <nvme_lba_status_atype>`

``rl``
  Range length from slba to perform the action





.. c:type:: struct nvme_directive_send_args

   Arguments for the NVMe Directive Send command

**Definition**

::

  struct nvme_directive_send_args {
    __u32 *result;
    void *data;
    int args_size;
    int fd;
    __u32 timeout;
    __u32 nsid;
    enum nvme_directive_send_doper doper;
    enum nvme_directive_dtype dtype;
    __u32 cdw12;
    __u32 data_len;
    __u16 dspec;
  };

**Members**

``result``
  If successful, the CQE dword0 value

``data``
  Data payload to be send

``args_size``
  Size of :c:type:`struct nvme_directive_send_args <nvme_directive_send_args>`

``fd``
  File descriptor of nvme device

``timeout``
  Timeout in ms

``nsid``
  Namespace ID, if applicable

``doper``
  Directive send operation, see :c:type:`enum nvme_directive_send_doper <nvme_directive_send_doper>`

``dtype``
  Directive type, see :c:type:`enum nvme_directive_dtype <nvme_directive_dtype>`

``cdw12``
  Directive specific command dword12

``data_len``
  Length of data payload in bytes

``dspec``
  Directive specific field





.. c:type:: struct nvme_directive_recv_args

   Arguments for the NVMe Directive Receive command

**Definition**

::

  struct nvme_directive_recv_args {
    __u32 *result;
    void *data;
    int args_size;
    int fd;
    __u32 timeout;
    __u32 nsid;
    enum nvme_directive_receive_doper doper;
    enum nvme_directive_dtype dtype;
    __u32 cdw12;
    __u32 data_len;
    __u16 dspec;
  };

**Members**

``result``
  If successful, the CQE dword0 value

``data``
  Userspace address of data payload

``args_size``
  Size of :c:type:`struct nvme_directive_recv_args <nvme_directive_recv_args>`

``fd``
  File descriptor of nvme device

``timeout``
  Timeout in ms

``nsid``
  Namespace ID, if applicable

``doper``
  Directive send operation, see :c:type:`enum nvme_directive_send_doper <nvme_directive_send_doper>`

``dtype``
  Directive type, see :c:type:`enum nvme_directive_dtype <nvme_directive_dtype>`

``cdw12``
  Directive specific command dword12

``data_len``
  Length of data payload in bytes

``dspec``
  Directive specific field





.. c:type:: struct nvme_capacity_mgmt_args

   Arguments for the NVMe Capacity Management command

**Definition**

::

  struct nvme_capacity_mgmt_args {
    __u32 *result;
    int args_size;
    int fd;
    __u32 timeout;
    __u32 cdw11;
    __u32 cdw12;
    __u16 element_id;
    __u8 op;
  };

**Members**

``result``
  If successful, the CQE dword0 value

``args_size``
  Size of :c:type:`struct nvme_capacity_mgmt_args <nvme_capacity_mgmt_args>`

``fd``
  File descriptor of nvme device

``timeout``
  Timeout in ms

``cdw11``
  Least significant 32 bits of the capacity in bytes of the
  Endurance Group or NVM Set to be created

``cdw12``
  Most significant 32 bits of the capacity in bytes of the
  Endurance Group or NVM Set to be created

``element_id``
  Value specific to the value of the Operation field

``op``
  Operation to be performed by the controller





.. c:type:: struct nvme_lockdown_args

   Arguments for the NVME Lockdown command

**Definition**

::

  struct nvme_lockdown_args {
    __u32 *result;
    int args_size;
    int fd;
    __u32 timeout;
    __u8 scp;
    __u8 prhbt;
    __u8 ifc;
    __u8 ofi;
    __u8 uuidx;
  };

**Members**

``result``
  The command completion result from CQE dword0

``args_size``
  Size of :c:type:`struct nvme_lockdown_args <nvme_lockdown_args>`

``fd``
  File descriptor of nvme device

``timeout``
  Timeout in ms (0 for default timeout)

``scp``
  Scope of the command

``prhbt``
  Prohibit or allow the command opcode or Set Features command

``ifc``
  Affected interface

``ofi``
  Opcode or Feature Identifier

``uuidx``
  UUID Index if controller supports this id selection method





.. c:type:: struct nvme_set_property_args

   Arguments for NVMe Set Property command

**Definition**

::

  struct nvme_set_property_args {
    __u64 value;
    __u32 *result;
    int args_size;
    int fd;
    __u32 timeout;
    int offset;
  };

**Members**

``value``
  The value to set the property

``result``
  The command completion result from CQE dword0

``args_size``
  Size of :c:type:`struct nvme_set_property_args <nvme_set_property_args>`

``fd``
  File descriptor of nvme device

``timeout``
  Timeout in ms

``offset``
  Property offset from the base to set





.. c:type:: struct nvme_get_property_args

   Arguments for NVMe Get Property command

**Definition**

::

  struct nvme_get_property_args {
    __u64 *value;
    int args_size;
    int fd;
    __u32 timeout;
    int offset;
  };

**Members**

``value``
  Where the property's value will be stored on success

``args_size``
  Size of :c:type:`struct nvme_get_property_args <nvme_get_property_args>`

``fd``
  File descriptor of nvme device

``timeout``
  Timeout in ms

``offset``
  Property offset from the base to retrieve





.. c:type:: struct nvme_sanitize_nvm_args

   Arguments for the NVMe Sanitize NVM command

**Definition**

::

  struct nvme_sanitize_nvm_args {
    __u32 *result;
    int args_size;
    int fd;
    __u32 timeout;
    enum nvme_sanitize_sanact sanact;
    __u32 ovrpat;
    bool ause;
    __u8 owpass;
    bool oipbp;
    bool nodas;
    bool emvs;
  };

**Members**

``result``
  The command completion result from CQE dword0

``args_size``
  Size of :c:type:`struct nvme_sanitize_nvm_args <nvme_sanitize_nvm_args>`

``fd``
  File descriptor of nvme device

``timeout``
  Timeout in ms

``sanact``
  Sanitize action, see :c:type:`enum nvme_sanitize_sanact <nvme_sanitize_sanact>`

``ovrpat``
  Overwrite pattern

``ause``
  Set to allow unrestricted sanitize exit

``owpass``
  Overwrite pass count

``oipbp``
  Set to overwrite invert pattern between passes

``nodas``
  Set to not deallocate blocks after sanitizing

``emvs``
  Set to enter media verification state





.. c:type:: struct nvme_dev_self_test_args

   Arguments for the NVMe Device Self Test command

**Definition**

::

  struct nvme_dev_self_test_args {
    __u32 *result;
    int args_size;
    int fd;
    __u32 timeout;
    __u32 nsid;
    enum nvme_dst_stc stc;
  };

**Members**

``result``
  The command completion result from CQE dword0

``args_size``
  Size of :c:type:`struct nvme_dev_self_test_args <nvme_dev_self_test_args>`

``fd``
  File descriptor of nvme device

``timeout``
  Timeout in ms

``nsid``
  Namespace ID to test

``stc``
  Self test code, see :c:type:`enum nvme_dst_stc <nvme_dst_stc>`





.. c:type:: struct nvme_virtual_mgmt_args

   Arguments for the NVMe Virtualization resource management command

**Definition**

::

  struct nvme_virtual_mgmt_args {
    __u32 *result;
    int args_size;
    int fd;
    __u32 timeout;
    enum nvme_virt_mgmt_act act;
    enum nvme_virt_mgmt_rt rt;
    __u16 cntlid;
    __u16 nr;
  };

**Members**

``result``
  If successful, the CQE dword0

``args_size``
  Size of :c:type:`struct nvme_virtual_mgmt_args <nvme_virtual_mgmt_args>`

``fd``
  File descriptor of nvme device

``timeout``
  Timeout in ms

``act``
  Virtual resource action, see :c:type:`enum nvme_virt_mgmt_act <nvme_virt_mgmt_act>`

``rt``
  Resource type to modify, see :c:type:`enum nvme_virt_mgmt_rt <nvme_virt_mgmt_rt>`

``cntlid``
  Controller id for which resources are bing modified

``nr``
  Number of resources being allocated or assigned





.. c:type:: struct nvme_io_args

   Arguments for NVMe I/O commands

**Definition**

::

  struct nvme_io_args {
    __u64 slba;
    __u64 storage_tag;
    __u32 *result;
    void *data;
    void *metadata;
    int args_size;
    int fd;
    __u32 timeout;
    __u32 nsid;
    __u32 reftag;
    __u32 data_len;
    __u32 metadata_len;
    __u16 nlb;
    __u16 control;
    __u16 apptag;
    __u16 appmask;
    __u16 dspec;
    __u8 dsm;
    __u8 rsvd1[1];
    __u64 reftag_u64;
    __u8 sts;
    __u8 pif;
  };

**Members**

``slba``
  Starting logical block

``storage_tag``
  This filed specifies Variable Sized Expected Logical Block
  Storage Tag (ELBST) or Logical Block Storage Tag (LBST)

``result``
  The command completion result from CQE dword0

``data``
  Pointer to user address of the data buffer

``metadata``
  Pointer to user address of the metadata buffer

``args_size``
  Size of :c:type:`struct nvme_io_args <nvme_io_args>`

``fd``
  File descriptor of nvme device

``timeout``
  Timeout in ms

``nsid``
  Namespace ID

``reftag``
  This field specifies the variable sized Expected Initial
  Logical Block Reference Tag (EILBRT) or Initial Logical Block
  Reference Tag (ILBRT). Used only if the namespace is formatted
  to use end-to-end protection information.

``data_len``
  Length of user buffer, **data**, in bytes

``metadata_len``
  Length of user buffer, **metadata**, in bytes

``nlb``
  Number of logical blocks to send (0's based value)

``control``
  Command control flags, see :c:type:`enum nvme_io_control_flags <nvme_io_control_flags>`.

``apptag``
  This field specifies the Application Tag Mask expected value.
  Used only if the namespace is formatted to use end-to-end
  protection information.

``appmask``
  This field specifies the Application Tag expected value. Used
  only if the namespace is formatted to use end-to-end protection
  information.

``dspec``
  Directive specific value

``dsm``
  Data set management attributes, see :c:type:`enum nvme_io_dsm_flags <nvme_io_dsm_flags>`

``rsvd1``
  Reserved

``reftag_u64``
  This field specifies the variable sized Expected Initial
  Logical Block Reference Tag (EILBRT) or Initial Logical Block
  Reference Tag (ILBRT). It is the 8 byte version required for
  enhanced protection information.  Used only if the namespace is
  formatted to use end-to-end protection information.

``sts``
  Storage tag size in bits, set by namespace Extended LBA Format

``pif``
  Protection information format, determines how variable sized
  storage_tag and reftag are put into dwords 2, 3, and 14. Set by
  namespace Extended LBA Format.





.. c:type:: struct nvme_dsm_args

   Arguments for the NVMe Dataset Management command

**Definition**

::

  struct nvme_dsm_args {
    __u32 *result;
    struct nvme_dsm_range *dsm;
    int args_size;
    int fd;
    __u32 timeout;
    __u32 nsid;
    __u32 attrs;
    __u16 nr_ranges;
  };

**Members**

``result``
  The command completion result from CQE dword0

``dsm``
  The data set management attributes

``args_size``
  Size of :c:type:`struct nvme_dsm_args <nvme_dsm_args>`

``fd``
  File descriptor of nvme device

``timeout``
  Timeout in ms

``nsid``
  Namespace identifier

``attrs``
  DSM attributes, see :c:type:`enum nvme_dsm_attributes <nvme_dsm_attributes>`

``nr_ranges``
  Number of block ranges in the data set management attributes





.. c:type:: struct nvme_copy_args

   Arguments for the NVMe Copy command

**Definition**

::

  struct nvme_copy_args {
    __u64 sdlba;
    __u32 *result;
    struct nvme_copy_range *copy;
    int args_size;
    int fd;
    __u32 timeout;
    __u32 nsid;
    __u32 ilbrt;
    int lr;
    int fua;
    __u16 nr;
    __u16 dspec;
    __u16 lbatm;
    __u16 lbat;
    __u8 prinfor;
    __u8 prinfow;
    __u8 dtype;
    __u8 format;
    __u64 ilbrt_u64;
  };

**Members**

``sdlba``
  Start destination LBA

``result``
  The command completion result from CQE dword0

``copy``
  Range description

``args_size``
  Size of :c:type:`struct nvme_copy_args <nvme_copy_args>`

``fd``
  File descriptor of the nvme device

``timeout``
  Timeout in ms

``nsid``
  Namespace identifier

``ilbrt``
  Initial logical block reference tag

``lr``
  Limited retry

``fua``
  Force unit access

``nr``
  Number of ranges

``dspec``
  Directive specific value

``lbatm``
  Logical block application tag mask

``lbat``
  Logical block application tag

``prinfor``
  Protection information field for read

``prinfow``
  Protection information field for write

``dtype``
  Directive type

``format``
  Descriptor format

``ilbrt_u64``
  Initial logical block reference tag - 8 byte
  version required for enhanced protection info





.. c:type:: struct nvme_resv_acquire_args

   Arguments for the NVMe Reservation Acquire Command

**Definition**

::

  struct nvme_resv_acquire_args {
    __u64 crkey;
    __u64 nrkey;
    __u32 *result;
    int args_size;
    int fd;
    __u32 timeout;
    __u32 nsid;
    enum nvme_resv_rtype rtype;
    enum nvme_resv_racqa racqa;
    bool iekey;
  };

**Members**

``crkey``
  The current reservation key associated with the host

``nrkey``
  The reservation key to be unregistered from the namespace if
  the action is preempt

``result``
  The command completion result from CQE dword0

``args_size``
  Size of :c:type:`struct nvme_resv_acquire_args <nvme_resv_acquire_args>`

``fd``
  File descriptor of nvme device

``timeout``
  Timeout in ms

``nsid``
  Namespace identifier

``rtype``
  The type of reservation to be create, see :c:type:`enum nvme_resv_rtype <nvme_resv_rtype>`

``racqa``
  The action that is performed by the command, see :c:type:`enum nvme_resv_racqa <nvme_resv_racqa>`

``iekey``
  Set to ignore the existing key





.. c:type:: struct nvme_resv_register_args

   Arguments for the NVMe Reservation Register command

**Definition**

::

  struct nvme_resv_register_args {
    __u64 crkey;
    __u64 nrkey;
    __u32 *result;
    int args_size;
    int fd;
    __u32 timeout;
    __u32 nsid;
    enum nvme_resv_rrega rrega;
    enum nvme_resv_cptpl cptpl;
    bool iekey;
  };

**Members**

``crkey``
  The current reservation key associated with the host

``nrkey``
  The new reservation key to be register if action is register or
  replace

``result``
  The command completion result from CQE dword0

``args_size``
  Size of :c:type:`struct nvme_resv_register_args <nvme_resv_register_args>`

``fd``
  File descriptor of nvme device

``timeout``
  Timeout in ms

``nsid``
  Namespace identifier

``rrega``
  The registration action, see :c:type:`enum nvme_resv_rrega <nvme_resv_rrega>`

``cptpl``
  Change persist through power loss, see :c:type:`enum nvme_resv_cptpl <nvme_resv_cptpl>`

``iekey``
  Set to ignore the existing key





.. c:type:: struct nvme_resv_release_args

   Arguments for the NVMe Reservation Release Command

**Definition**

::

  struct nvme_resv_release_args {
    __u64 crkey;
    __u32 *result;
    int args_size;
    int fd;
    __u32 timeout;
    __u32 nsid;
    enum nvme_resv_rtype rtype;
    enum nvme_resv_rrela rrela;
    bool iekey;
  };

**Members**

``crkey``
  The current reservation key to release

``result``
  The command completion result from CQE dword0

``args_size``
  Size of :c:type:`struct nvme_resv_release_args <nvme_resv_release_args>`

``fd``
  File descriptor of nvme device

``timeout``
  Timeout in ms

``nsid``
  Namespace identifier

``rtype``
  The type of reservation to be create, see :c:type:`enum nvme_resv_rtype <nvme_resv_rtype>`

``rrela``
  Reservation release action, see :c:type:`enum nvme_resv_rrela <nvme_resv_rrela>`

``iekey``
  Set to ignore the existing key





.. c:type:: struct nvme_resv_report_args

   Arguments for the NVMe Reservation Report command

**Definition**

::

  struct nvme_resv_report_args {
    __u32 *result;
    struct nvme_resv_status *report;
    int args_size;
    int fd;
    __u32 timeout;
    __u32 nsid;
    __u32 len;
    bool eds;
  };

**Members**

``result``
  The command completion result from CQE dword0

``report``
  The user space destination address to store the reservation
  report

``args_size``
  Size of :c:type:`struct nvme_resv_report_args <nvme_resv_report_args>`

``fd``
  File descriptor of nvme device

``timeout``
  Timeout in ms

``nsid``
  Namespace identifier

``len``
  Number of bytes to request transferred with this command

``eds``
  Request extended Data Structure





.. c:type:: struct nvme_io_mgmt_recv_args

   Arguments for the NVMe I/O Management Receive command

**Definition**

::

  struct nvme_io_mgmt_recv_args {
    void *data;
    int args_size;
    int fd;
    __u32 nsid;
    __u32 data_len;
    __u32 timeout;
    __u16 mos;
    __u8 mo;
  };

**Members**

``data``
  Userspace address of the data

``args_size``
  Size of :c:type:`struct nvme_io_mgmt_recv_args <nvme_io_mgmt_recv_args>`

``fd``
  File descriptor of nvme device

``nsid``
  Namespace identifier

``data_len``
  Length of **data**

``timeout``
  Timeout in ms

``mos``
  Management Operation Specific

``mo``
  Management Operation





.. c:type:: struct nvme_io_mgmt_send_args

   Arguments for the NVMe I/O Management Send command

**Definition**

::

  struct nvme_io_mgmt_send_args {
    void *data;
    int args_size;
    int fd;
    __u32 nsid;
    __u32 data_len;
    __u32 timeout;
    __u16 mos;
    __u8 mo;
  };

**Members**

``data``
  Userspace address of the data

``args_size``
  Size of :c:type:`struct nvme_io_mgmt_send_args <nvme_io_mgmt_send_args>`

``fd``
  File descriptor of nvme device

``nsid``
  Namespace identifier

``data_len``
  Length of **data**

``timeout``
  Timeout in ms

``mos``
  Management Operation Specific

``mo``
  Management Operation





.. c:type:: struct nvme_zns_mgmt_send_args

   Arguments for the NVMe ZNS Management Send command

**Definition**

::

  struct nvme_zns_mgmt_send_args {
    __u64 slba;
    __u32 *result;
    void *data;
    int args_size;
    int fd;
    __u32 timeout;
    __u32 nsid;
    enum nvme_zns_send_action zsa;
    __u32 data_len;
    bool select_all;
    __u8 zsaso;
  };

**Members**

``slba``
  Starting logical block address

``result``
  The command completion result from CQE dword0

``data``
  Userspace address of the data

``args_size``
  Size of :c:type:`struct nvme_zns_mgmt_send_args <nvme_zns_mgmt_send_args>`

``fd``
  File descriptor of nvme device

``timeout``
  timeout in ms

``nsid``
  Namespace ID

``zsa``
  Zone send action

``data_len``
  Length of **data**

``select_all``
  Select all flag

``zsaso``
  Zone Send Action Specific Option





.. c:type:: struct nvme_zns_mgmt_recv_args

   Arguments for the NVMe ZNS Management Receive command

**Definition**

::

  struct nvme_zns_mgmt_recv_args {
    __u64 slba;
    __u32 *result;
    void *data;
    int args_size;
    int fd;
    __u32 timeout;
    __u32 nsid;
    enum nvme_zns_recv_action zra;
    __u32 data_len;
    __u16 zrasf;
    bool zras_feat;
  };

**Members**

``slba``
  Starting logical block address

``result``
  The command completion result from CQE dword0

``data``
  Userspace address of the data

``args_size``
  Size of :c:type:`struct nvme_zns_mgmt_recv_args <nvme_zns_mgmt_recv_args>`

``fd``
  File descriptor of nvme device

``timeout``
  timeout in ms

``nsid``
  Namespace ID

``zra``
  zone receive action

``data_len``
  Length of **data**

``zrasf``
  Zone receive action specific field

``zras_feat``
  Zone receive action specific features





.. c:type:: struct nvme_zns_append_args

   Arguments for the NVMe ZNS Append command

**Definition**

::

  struct nvme_zns_append_args {
    __u64 zslba;
    __u64 *result;
    void *data;
    void *metadata;
    int args_size;
    int fd;
    __u32 timeout;
    __u32 nsid;
    __u32 ilbrt;
    __u32 data_len;
    __u32 metadata_len;
    __u16 nlb;
    __u16 control;
    __u16 lbat;
    __u16 lbatm;
    __u8 rsvd1[4];
    __u64 ilbrt_u64;
  };

**Members**

``zslba``
  Zone start logical block address

``result``
  The command completion result from CQE dword0

``data``
  Userspace address of the data

``metadata``
  Userspace address of the metadata

``args_size``
  Size of :c:type:`struct nvme_zns_append_args <nvme_zns_append_args>`

``fd``
  File descriptor of nvme device

``timeout``
  Timeout in ms

``nsid``
  Namespace ID

``ilbrt``
  Initial logical block reference tag

``data_len``
  Length of **data**

``metadata_len``
  Length of **metadata**

``nlb``
  Number of logical blocks

``control``

``lbat``
  Logical block application tag

``lbatm``
  Logical block application tag mask

``rsvd1``
  Reserved

``ilbrt_u64``
  Initial logical block reference tag - 8 byte
  version required for enhanced protection info





.. c:type:: struct nvme_dim_args

   Arguments for the Discovery Information Management (DIM) command

**Definition**

::

  struct nvme_dim_args {
    __u32 *result;
    void *data;
    int args_size;
    int fd;
    __u32 timeout;
    __u32 data_len;
    __u8 tas;
  };

**Members**

``result``
  Set on completion to the command's CQE DWORD 0 controller response.

``data``
  Pointer to the DIM data

``args_size``
  Length of the structure

``fd``
  File descriptor of nvme device

``timeout``
  Timeout in ms

``data_len``
  Length of **data**

``tas``
  Task field of the Command Dword 10 (cdw10)





.. c:type:: struct nvme_lm_cdq_args

   Arguments for Controller Data Queue (CDQ) command

**Definition**

::

  struct nvme_lm_cdq_args {
    __u32 *result;
    void *data;
    int args_size;
    int fd;
    __u32 timeout;
    __u16 mos;
    __u16 cntlid;
    __u16 cdqid;
    __u8 sel;
    __u8 sz_u8;
    __u8 rsvd1[4];
    __u32 sz;
  };

**Members**

``result``
  Set on completion to the command's CQE DWORD 0 controller response

``data``
  Pointer to data

``args_size``
  Length of structure

``fd``
  File descriptor of nvme device

``timeout``
  Timeout in ms

``mos``
  Management Operation Specific (MOS): This field is specific to the SEL type

``cntlid``
  Controller ID: For Create CDQ, specifies the target migratable controller

``cdqid``
  Controller Data Queue ID (CDQID): For Create CDQ, this field is the CDQID created
  by the controller if no error is present. For Delete CDQ, this field is the CDQID
  to delete.

``sel``
  Select (SEL): This field specifies the type of management operation to perform.

``sz_u8``
  For Create CDQ, specifies the size of CDQ, in dwords - 1 byte

``rsvd1``
  Reserved

``sz``
  For Create CDQ, specifies the size of CDQ, in dwords - 4 byte





.. c:type:: struct nvme_lm_track_send_args

   Arguments for the Track Send command

**Definition**

::

  struct nvme_lm_track_send_args {
    __u32 *result;
    int args_size;
    int fd;
    __u32 timeout;
    __u16 mos;
    __u16 cdqid;
    __u8 sel;
  };

**Members**

``result``
  Set on completion to the command's CQE DWORD 0 controller response

``args_size``
  Length of structure

``fd``
  File descriptor of nvme device

``timeout``
  Timeout in ms

``mos``
  Management Operation Specific (MOS): This field is specific to the SEL type

``cdqid``
  Controller Data Queue ID (CDQID)

``sel``
  Select (SEL): This field specifies the type of management operation to perform





.. c:type:: struct nvme_lm_migration_send_args

   Arguments for the Migration Send command

**Definition**

::

  struct nvme_lm_migration_send_args {
    __u64 offset;
    __u32 *result;
    void *data;
    int args_size;
    int fd;
    __u32 timeout;
    __u32 numd;
    __u16 mos;
    __u16 cntlid;
    __u16 csuuidi;
    __u8 sel;
    __u8 uidx;
    __u8 stype;
    __u8 seqind;
    __u8 csvi;
    bool dudmq;
  };

**Members**

``offset``
  Offset: This field specifies the offset, in bytes, within the data available to be
  returned and specifies the starting point for that data for what is actually
  returned to the host.

``result``
  Set on completion to the command's CQE DWORD 0 controller response

``data``
  Pointer to data

``args_size``
  Length of structure

``fd``
  File descriptor of nvme device

``timeout``
  Timeout in ms

``numd``
  Number of Dwords (NUMD): This field specifies the number of dwords being transferred

``mos``
  Management Operation Specific (MOS): This field is specific to the SEL type

``cntlid``
  Controller ID: This field specifies the identifier of the controller to which the
  operation is performed.

``csuuidi``
  Controller State UUID Index (CSUUIDI): A non-zero value in this field specifies the
  index to a specific entry in the Vendor Specific Controller State UUID Supported.
  list of the Supported Controller State Formats data structure.

``sel``
  Select (SEL): This field specifies the type of management operation to perform.

``uidx``
  UUID Index (UIDX): If this field is set to a non-zero value, then the value of this
  field is the index of a UUID in the UUID List (refer to Figure 320) that is used by
  the command.

``stype``
  Suspend Type (STYPE): This field specifies the type of suspend.

``seqind``
  Sequence Identifier (SEQIND): This field identified the sequences of this Migration
  Send command in relation to other Migration Send commands.

``csvi``
  Controller State Version Index (CSVI): A non-zero value in this field specifies the
  index to a specific entry in the NVMe Controller State Version list of the Supported
  Controller State Formats data structure.

``dudmq``
  Delete User Data Migration Queue (DUDMQ): If set, the migration queue is deleted
  is deleted as part of the Suspend operation. If cleared, it is retained.





.. c:type:: struct nvme_lm_migration_recv_args

   Arguments for the Migration Receive command

**Definition**

::

  struct nvme_lm_migration_recv_args {
    __u64 offset;
    __u32 *result;
    void *data;
    int args_size;
    int fd;
    __u32 timeout;
    __u32 numd;
    __u16 mos;
    __u16 cntlid;
    __u16 csuuidi;
    __u8 sel;
    __u8 uidx;
    __u8 csuidxp;
  };

**Members**

``offset``
  Offset: This field specifies the offset, in bytes, within the data available to be
  returned and specifies the starting point for that data for what is actually
  returned to the host.

``result``
  Set on completion to the command's CQE DWORD 0 controller response

``data``
  Pointer to data

``args_size``
  Length of structure

``fd``
  File descriptor of nvme device

``timeout``
  Timeout in ms

``numd``
  Number of Dwords (NUMD): This field specifies the number of dwords to return. This
  is a 0's based value.

``mos``
  Management Operation Specific (MOS): This field is specific to the SEL type

``cntlid``
  Controller ID: This field specifies the identifier of the controller to which the
  operation is performed.

``csuuidi``
  Controller State UUID Index (CSUUIDI): A non-zero value in this field specifies the
  index to a specific entry in the Vendor Specific Controller State UUID Supported.
  list of the Supported Controller State Formats data structure.

``sel``
  Select (SEL): This field specifies the type of management operation to perform

``uidx``
  UUID Index (UIDX): If this field is set to a non-zero value, then the value of this
  field is the index of a UUID in the UUID List (refer to Figure 320) that is used by
  the command.

``csuidxp``
  Controller State UUID Index Parameter (CSUIDXP): This field is vendor specific.