libnvme(9) API Manual libnvme(9)

# [NAME](#NAME)

enum nvme\_id\_ctrl\_dctype - Discovery Controller types

# [SYNOPSIS](#SYNOPSIS)

enum nvme\_id\_ctrl\_dctype {  
**NVME\_CTRL\_DCTYPE\_NOT\_REPORTED** ,  
**NVME\_CTRL\_DCTYPE\_DDC** ,  
**NVME\_CTRL\_DCTYPE\_CDC**

};

# [Constants](#Constants)

[NVME\_CTRL\_DCTYPE\_NOT\_REPORTED](#NVME_CTRL_DCTYPE_NOT_REPORTED)

Not reported (I/O, Admin, and pre-TP8010)

[NVME\_CTRL\_DCTYPE\_DDC](#NVME_CTRL_DCTYPE_DDC)

Direct Discovery controller

[NVME\_CTRL\_DCTYPE\_CDC](#NVME_CTRL_DCTYPE_CDC)

Central Discovery controller

enum nvme\_id\_ctrl\_dctype October 2026

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Document: nvme_id_ctrl_dctype-libnvme3(2) from nvme-cli 3.2-r0 (Chainguard OS)
Source: https://github.com/linux-nvme/nvme-cli