struct _MDL {
struct _MDL* Next;/* 0x0 8 */ short Size;/* 0x8 2 */
short MdlFlags;/* 0xa 2 */
/* 4 bytes padding */
void* MappedSystemVa;/* 0x18 8 */
void* StartVa;/* 0x20 8 */
unsigned long ByteCount;/* 0x28 4 */
unsigned long ByteOffset;/* 0x2c 4 */
};