> For the complete documentation index, see [llms.txt](https://www.pinvoke.dev/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://www.pinvoke.dev/security/security_quality_of_service.md).

# SECURITY\_QUALITY\_OF\_SERVICE

```csharp
public partial struct SECURITY_QUALITY_OF_SERVICE
{
    public uint Length;
    public SECURITY_IMPERSONATION_LEVEL ImpersonationLevel;
    public byte ContextTrackingMode;
    public BOOLEAN EffectiveOnly;
}
```

[SECURITY\_IMPERSONATION\_LEVEL](/security/security_impersonation_level.md)