_ETW_HEADER_TYPE

Windows 10 1607 Redstone 1 (Anniversary Update) x86
Windows 10 1703 Redstone 2 (Creators Update) x86
Windows 10 1709 Redstone 3 (Fall Creators Update) x86
//0x4 bytes (sizeof)
enum _ETW_HEADER_TYPE
{
    EtwHeaderTypeNative = 0,
    EtwHeaderTypeMax = 1
};