NAME

struct nvme_uring_cmd - nvme uring command structure

SYNOPSIS

struct nvme_uring_cmd {
 
__u8 opcode;
 
__u8 flags;
 
__u16 rsvd1;
 
__u32 nsid;
 
__u32 cdw2;
 
__u32 cdw3;
 
__u64 metadata;
 
__u64 addr;
 
__u32 metadata_len;
 
__u32 data_len;
 
__u32 cdw10;
 
__u32 cdw11;
 
__u32 cdw12;
 
__u32 cdw13;
 
__u32 cdw14;
 
__u32 cdw15;
 
__u32 timeout_ms;
 
__u32 rsvd2;
 
};
 
 

Members

opcode
Operation code, see enum nvme_io_opcodes and enum nvme_admin_opcodes
flags
Not supported: intended for command flags (eg: SGL, FUSE)
rsvd1
Reserved for future use
nsid
Namespace Identifier, or Fabrics type
cdw2
Command Dword 2 (no spec defined use)
cdw3
Command Dword 3 (no spec defined use)
metadata
User space address to metadata buffer (NULL if not used)
addr
User space address to data buffer (NULL if not used)
metadata_len
Metadata buffer transfer length
data_len
Data buffer transfer length
cdw10
Command Dword 10 (command specific)
cdw11
Command Dword 11 (command specific)
cdw12
Command Dword 12 (command specific)
cdw13
Command Dword 13 (command specific)
cdw14
Command Dword 14 (command specific)
cdw15
Command Dword 15 (command specific)
timeout_ms
If non-zero, overrides system default timeout in milliseconds
rsvd2
Reserved for future use (and fills an implicit struct pad