NAME

       nvme_io_passthru - Submit an nvme io passthrough command

SYNOPSIS

       int  nvme_io_passthru (int fd , __u8 opcode , __u8 flags , __u16 rsvd , __u32 nsid , __u32
       cdw2 , __u32 cdw3 , __u32 cdw10 , __u32 cdw11 , __u32 cdw12 , __u32 cdw13 , __u32 cdw14  ,
       __u32  cdw15  ,  __u32 data_len , void *data , __u32 metadata_len , void *metadata , __u32
       timeout_ms , __u32 *result );

ARGUMENTS

       fd          File descriptor of nvme device

       opcode      The nvme io command to send

       flags       NVMe command flags (not used)

       rsvd        Reserved for future use

       nsid        Namespace identifier

       cdw2        Command dword 2

       cdw3        Command dword 3

       cdw10       Command dword 10

       cdw11       Command dword 11

       cdw12       Command dword 12

       cdw13       Command dword 13

       cdw14       Command dword 14

       cdw15       Command dword 15

       data_len    Length of the data transferred in this command in bytes

       data        Pointer to user address of the data buffer

       metadata_len
                   Length of metadata transferred in this command

       metadata    Pointer to user address of the metadata buffer

       timeout_ms  How long the kernel waits for the command to complete

       result      Optional field to return the result from the CQE dword 0

DESCRIPTION

       Parameterized  form  of  nvme_submit_io_passthru.  This  sets  up  and  submits  a  struct
       nvme_passthru_cmd.

       Known values for opcode are defined in enum nvme_io_opcode.

RETURN

       The nvme command status if a response was received (see enum nvme_status_field) or -1 with
       errno set otherwise.