1libnvme(9)                        API Manual                        libnvme(9)
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NAME

6       struct nvme_passthru_cmd - nvme passthrough command structure
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SYNOPSIS

9       struct nvme_passthru_cmd {
10           __u8 opcode;
11           __u8 flags;
12           __u16 rsvd1;
13           __u32 nsid;
14           __u32 cdw2;
15           __u32 cdw3;
16           __u64 metadata;
17           __u64 addr;
18           __u32 metadata_len;
19           __u32 data_len;
20           __u32 cdw10;
21           __u32 cdw11;
22           __u32 cdw12;
23           __u32 cdw13;
24           __u32 cdw14;
25           __u32 cdw15;
26           __u32 timeout_ms;
27           __u32 result;
28        };
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Members

32       opcode      Operation  code, see enum nvme_io_opcodes and enum nvme_ad‐
33                   min_opcodes
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35       flags       Not supported: intended for command flags (eg: SGL, FUSE)
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37       rsvd1       Reserved for future use
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39       nsid        Namespace Identifier, or Fabrics type
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41       cdw2        Command Dword 2 (no spec defined use)
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43       cdw3        Command Dword 3 (no spec defined use)
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45       metadata    User space address to metadata buffer (NULL if not used)
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47       addr        User space address to data buffer (NULL if not used)
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49       metadata_len
50                   Metadata buffer transfer length
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52       data_len    Data buffer transfer length
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54       cdw10       Command Dword 10 (command specific)
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56       cdw11       Command Dword 11 (command specific)
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58       cdw12       Command Dword 12 (command specific)
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60       cdw13       Command Dword 13 (command specific)
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62       cdw14       Command Dword 14 (command specific)
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64       cdw15       Command Dword 15 (command specific)
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66       timeout_ms  If non-zero, overrides system default timeout in  millisec‐
67                   onds
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69       result      Set  on  completion to the command's CQE DWORD 0 controller
70                   response
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74April 2022                 struct nvme_passthru_cmd                 libnvme(9)