---
name: "tcg_l0_cnl-libnvme3"
section: "2"
platform: "linux"
package: "nvme-cli"
version: "3.2-1"
release: "Arch Linux 2026-11-01"
platforms: ["linux"]
url: "https://new.carta.tech/tcg_l0_cnl-libnvme3"
---

# tcg\_l0\_cnl-libnvme3(2)

Configurable Namespace Locking feature (0x0403)

## NAME

struct tcg\_l0\_cnl - Configurable Namespace Locking feature (0x0403)

## SYNOPSIS

struct tcg\_l0\_cnl {\
     **\_\_u8 flags;**\
     **\_\_u8 rsvd1\[3\];**\
     **\_\_be32 max\_key\_count;**\
     **\_\_be32 unused\_key\_count;**\
     **\_\_be32 max\_ranges\_per\_ns;**\
 };\

## Members

- flags

  Flags, see *enum tcg\_l0\_cnl\_flags*

- rsvd1

  Reserved

- max\_key\_count

  Maximum key count

- unused\_key\_count

  Unused key count

- max\_ranges\_per\_ns

  Maximum ranges per namespace

## Description

TCG Storage Opal SSC Feature Set: Configurable Namespace Locking, section 4.2.1.