Struct C to C#

[ttan]

Can any one help with translate the struct below to from c#

Any help are aprreciated.

typedef struct _FastMacAddrType {
ULONG hifour;
USHORT lotwo;
}FastMacAddrType, *PFastMacAddrType;

typedef struct _ETHERNET_HEADER_NOPREAMBLE {
FastMacAddrType dest_addr;
FastMacAddrType source_addr;
unsigned short type;
} ETHERNET_HEADER_NOPREAMBLE,*PETHERNET_HEADER_NOPRE AMBLE;

typedef struct _GRE_HEADER {
USHORT CksmFlagVersion;
USHORT ProtocolType;
} GRE_HEADER, *PGRE_HEADER;

typedef struct _CF9_UPDATE {
ETHERNET_HEADER_NOPREAMBLE ether_header;
GRE_HEADER GreHeader;
UCHAR CF9_Type;
UCHAR FillBytes[13];
UCHAR Sequence;
UCHAR DataType;
UCHAR Data[1]; } CF9_UPDATE, *PCF9_UPDATE;

typedef struct _CF9_STATUS {
ETHERNET_HEADER_NOPREAMBLE ether_header;
GRE_HEADER GreHeader;
UCHAR CF9_Type;
UCHAR FillBytes[13];
UCHAR MicroRevision[8];
UCHAR FpgaRevision[8];
UCHAR SwitchName[22];
PORT_REGISTERS PortRegisters;
} CF9_STATUS, *PCF9_STATUS;