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+.TH "nvme_io_passthru" 9 "nvme_io_passthru" "February 2024" "libnvme API manual" LINUX
+.SH NAME
+nvme_io_passthru \- Submit an nvme io passthrough command
+.SH SYNOPSIS
+.B "int" nvme_io_passthru
+.BI "(int fd "  ","
+.BI "__u8 opcode "  ","
+.BI "__u8 flags "  ","
+.BI "__u16 rsvd "  ","
+.BI "__u32 nsid "  ","
+.BI "__u32 cdw2 "  ","
+.BI "__u32 cdw3 "  ","
+.BI "__u32 cdw10 "  ","
+.BI "__u32 cdw11 "  ","
+.BI "__u32 cdw12 "  ","
+.BI "__u32 cdw13 "  ","
+.BI "__u32 cdw14 "  ","
+.BI "__u32 cdw15 "  ","
+.BI "__u32 data_len "  ","
+.BI "void *data "  ","
+.BI "__u32 metadata_len "  ","
+.BI "void *metadata "  ","
+.BI "__u32 timeout_ms "  ","
+.BI "__u32 *result "  ");"
+.SH ARGUMENTS
+.IP "fd" 12
+File descriptor of nvme device
+.IP "opcode" 12
+The nvme io command to send
+.IP "flags" 12
+NVMe command flags (not used)
+.IP "rsvd" 12
+Reserved for future use
+.IP "nsid" 12
+Namespace identifier
+.IP "cdw2" 12
+Command dword 2
+.IP "cdw3" 12
+Command dword 3
+.IP "cdw10" 12
+Command dword 10
+.IP "cdw11" 12
+Command dword 11
+.IP "cdw12" 12
+Command dword 12
+.IP "cdw13" 12
+Command dword 13
+.IP "cdw14" 12
+Command dword 14
+.IP "cdw15" 12
+Command dword 15
+.IP "data_len" 12
+Length of the data transferred in this command in bytes
+.IP "data" 12
+Pointer to user address of the data buffer
+.IP "metadata_len" 12
+Length of metadata transferred in this command
+.IP "metadata" 12
+Pointer to user address of the metadata buffer
+.IP "timeout_ms" 12
+How long the kernel waits for the command to complete
+.IP "result" 12
+Optional field to return the result from the CQE dword 0
+.SH "DESCRIPTION"
+Parameterized form of \fBnvme_submit_io_passthru\fP. This sets up and submits
+a \fIstruct nvme_passthru_cmd\fP.
+
+Known values for \fIopcode\fP are defined in \fIenum nvme_io_opcode\fP.
+.SH "RETURN"
+The nvme command status if a response was received (see
+\fIenum nvme_status_field\fP) or -1 with errno set otherwise.