libnvme(9) API Manual libnvme(9)

# [NAME](#NAME)

enum nvme\_id\_ctrl\_crcap - Power Loss Signaling Information

# [SYNOPSIS](#SYNOPSIS)

enum nvme\_id\_ctrl\_crcap {  
**NVME\_CTRL\_CRCAP\_RRSUP\_SHIFT** ,  
**NVME\_CTRL\_CRCAP\_RGIDC\_SHIFT** ,  
**NVME\_CTRL\_CRCAP\_RRSUP\_MASK** ,  
**NVME\_CTRL\_CRCAP\_RGIDC\_MASK**

};

# [Constants](#Constants)

[NVME\_CTRL\_CRCAP\_RRSUP\_SHIFT](#NVME_CTRL_CRCAP_RRSUP_SHIFT)

Shift amount to get the Reachability Reporting Supported from the *struct nvme\_id\_ctrl*.crcap field.

[NVME\_CTRL\_CRCAP\_RGIDC\_SHIFT](#NVME_CTRL_CRCAP_RGIDC_SHIFT)

Shift amount to get the Reachability Group ID Changeable from the *struct nvme\_id\_ctrl*.crcap field.

[NVME\_CTRL\_CRCAP\_RRSUP\_MASK](#NVME_CTRL_CRCAP_RRSUP_MASK)

Mask to get the Reachability Reporting Supported from the *struct nvme\_id\_ctrl*.crcap field.

[NVME\_CTRL\_CRCAP\_RGIDC\_MASK](#NVME_CTRL_CRCAP_RGIDC_MASK)

Mask to get the Reachability Group ID Changeable from the *struct nvme\_id\_ctrl*.crcap field.

enum nvme\_id\_ctrl\_crcap October 2026

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