nvme_io_passthru64(2)
Submit an nvme io passthrough command
Description
nvme_io_passthru64
NAME
nvme_io_passthru64 - 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
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fd |
File descriptor of nvme device |
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opcode |
The nvme io command to send |
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flags |
NVMe command flags (not used) |
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rsvd |
Reserved for future use |
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nsid |
Namespace identifier |
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cdw2 |
Command dword 2 |
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cdw3 |
Command dword 3 |
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cdw10 |
Command dword 10 |
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cdw11 |
Command dword 11 |
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cdw12 |
Command dword 12 |
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cdw13 |
Command dword 13 |
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cdw14 |
Command dword 14 |
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cdw15 |
Command dword 15 |
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data_len |
Length of the data transferred in this command in bytes |
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data |
Pointer to user address of the data buffer |
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metadata_len |
Length of metadata transferred in this command |
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metadata |
Pointer to user address of the metadata buffer |
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timeout_ms |
How long the kernel waits for the command to complete |
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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.