nvme_io_passthru64 - Man Page
Submit an nvme io passthrough command
Synopsis
int nvme_io_passthru64 (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 , __u64 *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_passthru64. This sets up and submits a struct nvme_passthru_cmd64.
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.