Sample Code
windows driver samples/ Windows Filtering Platform Sample/ C++/ syslib/ HelperFunctions_Headers.h/
////////////////////////////////////////////////////////////////////////////////////////////////////
//
// Copyright (c) 2012 Microsoft Corporation. All Rights Reserved.
//
// Module Name:
// HelperFunctions_Headers.h
//
// Abstract:
// This module contains definitions and prototypes of kernel helper functions that assist with
// MAC, IP, and Transport header operations.
//
// Author:
// Dusty Harper (DHarper)
//
// Revision History:
//
// [ Month ][Day] [Year] - [Revision]-[ Comments ]
// May 01, 2010 - 1.0 - Creation
//
////////////////////////////////////////////////////////////////////////////////////////////////////
#ifndef HELPERFUNCTIONS_HEADERS_H
#define HELPERFUNCTIONS_HEADERS_H
#pragma warning(push)
#pragma warning(disable: 4201) /// NAMELESS_STRUCT_UNION
#define ETHERNET_ADDRESS_SIZE 6
#define IPV4_ADDRESS_SIZE 4
#define IPV6_ADDRESS_SIZE 16
#define IPV4 4
#define IPV6 6
#define IPV4_HEADER_MIN_SIZE 20
#define IPV6_HEADER_MIN_SIZE 40
#define ICMP_HEADER_MIN_SIZE 8
#define TCP_HEADER_MIN_SIZE 20
#define UDP_HEADER_MIN_SIZE 8
#define ICMPV4 1
#define TCP 6
#define UDP 17
#define ICMPV6 58
static const UINT8 IPV4_LOOPBACK_ADDRESS[] = {0x01,
0x00,
0x00,
0x7F}; /// 127.0.0.1 ( in network byte order)
static const UINT8 IPV6_LOOPBACK_ADDRESS[] = {0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x01}; /// ::1
/*
RFC 894 - A Standard for the Transmission of <br>
IP Datagrams over Ethernet Networks <br>
<br>
0 1 2 <br>
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 <br>
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ <br>
| | <br>
+ Destination MAC Address + <br>
| | <br>
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ <br>
| | <br>
+ Source MAC Address + <br>
| | <br>
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ <br>
| Type | Data... | <br>
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ <br>
<br>
RFC_REF: http://www.faqs.org/rfcs/rfc894.html <br>
*/
typedef struct _ETHERNET_II_HEADER_
{
BYTE pDestinationAddress[6];
BYTE pSourceAddress[6];
UINT16 type;
}ETHERNET_II_HEADER;
/*
RFC 1042 - A Standard for the Transmission of <br>
IP Datagrams over IEEE 802 Networks <br>
<br>
0 1 2 <br>
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 <br>
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ <br>
| | <br>
+ Destination MAC Address + <br>
| | <br>
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ <br>
| | <br>
+ Source MAC Address + <br>
| | <br>
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ <br>
| Length | DSAP | <br>
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ <br>
| SSAP | Control Byte | OUI ... > <br>
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ <br>
< OUI (cont.) | Type ... > <br>
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ <br>
< Type (cont.) | Data ... | <br>
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ <br>
<br>
RFC_REF: http://www.faqs.org/rfcs/rfc1042.html <br>
*/
typedef struct _ETHERNET_SNAP_HEADER_
{
BYTE pDestinationAddress[6];
BYTE pSourceAddress[6];
UINT16 length;
UINT8 destinationSAP; /// Destination Subnetwork Access Protocol
UINT8 sourceSAP; /// Source Subnetwork Access Protocol
UINT8 controlByte;
UINT8 pOUI[3]; /// Organizationally Unique Identifier
UINT16 type;
}ETHERNET_SNAP_HEADER;
/*
RFC 791 - Internet Protocol <br>
<br>
0 1 2 3 <br>
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 <br>
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ <br>
|Version| IHL |Type of Service| Total Length | <br>
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ <br>
| Identification |Flags| Fragment Offset | <br>
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ <br>
| Time to Live | Protocol | Header Checksum | <br>
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ <br>
| Source Address | <br>
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ <br>
| Destination Address | <br>
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ <br>
| Options | Padding | <br>
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ <br>
<br>
RFC_REF: http://www.faqs.org/rfcs/rfc791.html <br>
*/
typedef struct _IP_HEADER_V4_
{
union
{
UINT8 versionAndHeaderLength;
struct
{
UINT8 headerLength : 4;
UINT8 version : 4;
};
};
union
{
UINT8 typeOfService;
UINT8 differentiatedServicesCodePoint;
struct
{
UINT8 explicitCongestionNotification : 2;
UINT8 typeOfService : 6;
};
};
UINT16 totalLength;
UINT16 identification;
union
{
UINT16 flagsAndFragmentOffset;
struct
{
UINT16 fragmentOffset : 13;
UINT16 flags : 3;
};
};
UINT8 timeToLive;
UINT8 protocol;
UINT16 checksum;
BYTE pSourceAddress[sizeof(UINT32)];
BYTE pDestinationAddress[sizeof(UINT32)];
UINT8 pOptions[1]; /// pointer to the first byte of the variable length Options
}IP_HEADER_V4, *PIP_HEADER_V4;
/*
RFC 2460 - Internet Protocol, Version 6 (IPv6) Specification <br>
<br>
0 1 2 3 <br>
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 <br>
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ <br>
|Version| Traffic Class | Flow Label | <br>
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ <br>
| Payload Length | Next Header | Hop Limit | <br>
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ <br>
| | <br>
+ + <br>
| | <br>
+ Source Address + <br>
| | <br>
+ + <br>
| | <br>
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ <br>
| | <br>
+ + <br>
| | <br>
+ Destination Address + <br>
| | <br>
+ + <br>
| | <br>
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ <br>
<br>
RFC_REF: http://www.faqs.org/rfcs/rfc2460.html <br>
*/
typedef struct _IP_HEADER_V6_
{
union
{
UINT8 pVersionTrafficClassAndFlowLabel[4];
struct
{
UINT8 r1 : 4;
UINT8 value : 4;
UINT8 r2;
UINT8 r3;
UINT8 r4;
}version;
};
UINT16 payloadLength;
UINT8 nextHeader;
UINT8 hopLimit;
BYTE pSourceAddress[16];
BYTE pDestinationAddress[16];
}IP_HEADER_V6, *PIP_HEADER_V6;
/*
RFC 792 - Internet Control Message Protocol <br>
<br>
0 1 2 3 <br>
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 <br>
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ <br>
| Type | Code | Checksum | <br>
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ <br>
| Variable (Dependent on Type / Code) | <br>
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ <br>
*/
typedef struct _ICMP_HEADER_V4_
{
UINT8 type;
UINT8 code;
UINT16 checksum;
union
{
ECHO_MESSAGE echo;
DESTINATION_UNREACHABLE_MESSAGE destinationUnreachable;
SOURCE_QUENCH_MESSAGE sourceQuench;
REDIRECT_MESSAGE redirect;
TIME_EXCEEDED_MESSAGE timeExceeded;
PARAMETER_PROBLEM_MESSAGE parameterProblem;
TIMESTAMP_MESSAGE timestamp;
INFORMATION_MESSAGE information;
};
}ICMP_HEADER_V4, *PICMP_HEADER_V4;
/*
RFC 2463 - Internet Control Message Protocol for IPv6 <br>
<br>
0 1 2 3 <br>
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 <br>
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ <br>
| Type | Code | Checksum | <br>
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ <br>
| Variable (Dependent on Type / Code) | <br>
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ <br>
*/
typedef struct _ICMP_HEADER_V6_
{
UINT8 type;
UINT8 code;
UINT16 checksum;
/* union
{
ECHO_MESSAGE echo;
DESTINATION_UNREACHABLE_MESSAGE destinationUnreachable;
SOURCE_QUENCH_MESSAGE sourceQuench;
REDIRECT_MESSAGE redirect;
TIME_EXCEEDED_MESSAGE timeExceeded;
PARAMETER_PROBLEM_MESSAGE parameterProblem;
TIMESTAMP_MESSAGE timestamp;
INFORMATION_MESSAGE information;
};*/
}ICMP_HEADER_V6, *PICMP_HEADER_V6;
/*
RFC 793 - Transmission Control Protocol <br>
<br>
0 1 2 3 <br>
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 <br>
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ <br>
| Source Port | Destination Port | <br>
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ <br>
| Sequence Number | <br>
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ <br>
| Acknowledgment Number | <br>
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ <br>
|Offset |Rsvd |N|C|E|U|A|P|R|S|F| Window | <br>
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ <br>
| Checksum | Urgent Pointer | <br>
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ <br>
| Options | Padding | <br>
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ <br>
<br>
RFC_REF: http://www.faqs.org/rfcs/rfc793.html <br>
*/
typedef struct _TCP_HEADER_
{
UINT16 sourcePort;
UINT16 destinationPort;
UINT32 sequenceNumber;
UINT32 acknowledgementNumber;
union
{
UINT8 dataOffsetReservedAndNS;
struct
{
UINT8 nonceSum : 1;
UINT8 reserved : 3;
UINT8 dataOffset : 4;
}dORNS;
};
union
{
UINT8 controlBits;
struct
{
UINT8 FIN : 1;
UINT8 SYN : 1;
UINT8 RST : 1;
UINT8 PSH : 1;
UINT8 ACK : 1;
UINT8 URG : 1;
UINT8 ECE : 1;
UINT8 CWR : 1;
};
};
UINT16 window;
UINT16 checksum;
UINT16 urgentPointer;
UINT8 pOptions[1]; /// pointer to the first byte of the variable length Options
}TCP_HEADER, *PTCP_HEADER;
/*
RFC 768 - User Datagram Protocol <br>
<br>
0 1 2 3 <br>
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 <br>
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ <br>
| Source Port | Destination Port | <br>
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ <br>
| Length | Checksum | <br>
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ <br>
<br>
RFC_REF: http://www.faqs.org/rfcs/rfc768.html <br>
*/
typedef struct _UDP_HEADER_
{
UINT16 sourcePort;
UINT16 destinationPort;
UINT16 length;
UINT16 checksum;
}UDP_HEADER, *PUDP_HEADER;
#pragma warning(pop) /// NAMELESS_STRUCT_UNION
_At_(*ppMACHeader, _Pre_ _Notnull_)
_At_(*ppMACHeader, _Post_ _Null_)
_Success_(*ppMACHeader == 0)
inline VOID KrnlHlprMACHeaderDestroy(_Inout_ VOID** ppMACHeader);
_When_(return != STATUS_SUCCESS, _At_(*ppMACHeader, _Post_ _Null_))
_When_(return == STATUS_SUCCESS, _At_(*ppMACHeader, _Post_ _Notnull_))
_IRQL_requires_min_(PASSIVE_LEVEL)
_IRQL_requires_max_(DISPATCH_LEVEL)
_IRQL_requires_same_
_Success_(return == STATUS_SUCCESS)
NTSTATUS KrnlHlprMACHeaderGet(_In_ NET_BUFFER_LIST* pNetBufferList,
_Outptr_ VOID** ppMACHeader,
_Inout_ BOOLEAN* pNeedToFreeMemory,
_In_ UINT32 macHeaderSize = 0);
_IRQL_requires_min_(PASSIVE_LEVEL)
_IRQL_requires_max_(DISPATCH_LEVEL)
_IRQL_requires_same_
_Check_return_
_Success_(return == STATUS_SUCCESS)
NTSTATUS KrnlHlprMACHeaderModifySourceAddress(_In_ const FWP_VALUE* pValue,
_Inout_ NET_BUFFER_LIST* pNetBufferList);
_IRQL_requires_min_(PASSIVE_LEVEL)
_IRQL_requires_max_(DISPATCH_LEVEL)
_IRQL_requires_same_
_Check_return_
_Success_(return == STATUS_SUCCESS)
NTSTATUS KrnlHlprMACHeaderModifyDestinationAddress(_In_ const FWP_VALUE* pValue,
_Inout_ NET_BUFFER_LIST* pNetBufferList);
_At_(*ppIPHeader, _Pre_ _Notnull_)
_At_(*ppIPHeader, _Post_ _Null_)
_Success_(*ppIPHeader == 0)
inline VOID KrnlHlprIPHeaderDestroy(_Inout_ VOID** ppIPHeader);
_When_(return != STATUS_SUCCESS, _At_(*ppIPHeader, _Post_ _Null_))
_When_(return == STATUS_SUCCESS, _At_(*ppIPHeader, _Post_ _Notnull_))
_IRQL_requires_min_(PASSIVE_LEVEL)
_IRQL_requires_max_(DISPATCH_LEVEL)
_IRQL_requires_same_
_Success_(return == STATUS_SUCCESS)
NTSTATUS KrnlHlprIPHeaderGet(_In_ NET_BUFFER_LIST* pNetBufferList,
_In_ const FWPS_INCOMING_VALUES* pClassifyValues,
_In_ const FWPS_INCOMING_METADATA_VALUES* pMetadata,
_Outptr_ VOID** ppIPHeader,
_Inout_ BOOLEAN* pNeedToFreeMemory,
_Inout_opt_ FWP_DIRECTION* pDirection = 0,
_Inout_opt_ UINT32* pIPHeaderSize = 0);
_When_(return != STATUS_SUCCESS, _At_(*ppIPHeader, _Post_ _Null_))
_When_(return == STATUS_SUCCESS, _At_(*ppIPHeader, _Post_ _Notnull_))
_IRQL_requires_min_(PASSIVE_LEVEL)
_IRQL_requires_max_(DISPATCH_LEVEL)
_IRQL_requires_same_
_Success_(return == STATUS_SUCCESS)
NTSTATUS KrnlHlprIPHeaderGet(_In_ NET_BUFFER_LIST* pNetBufferList,
_Outptr_ VOID** ppIPHeader,
_Inout_ BOOLEAN* pNeedToFreeMemory,
_In_ UINT32 ipHeaderSize = 0);
_IRQL_requires_min_(PASSIVE_LEVEL)
_IRQL_requires_max_(DISPATCH_LEVEL)
_IRQL_requires_same_
IPPROTO KrnlHlprIPHeaderGetProtocolField(_In_ NET_BUFFER_LIST* pNetBufferList,
_In_ ADDRESS_FAMILY addressFamily);
_IRQL_requires_min_(PASSIVE_LEVEL)
_IRQL_requires_max_(DISPATCH_LEVEL)
_IRQL_requires_same_
inline VOID KrnlHlprIPHeaderCalculateV4Checksum(_Inout_ IP_HEADER_V4* pIPv4Header,
_In_ UINT32 headerSize);
_IRQL_requires_min_(PASSIVE_LEVEL)
_IRQL_requires_max_(DISPATCH_LEVEL)
_IRQL_requires_same_
_Check_return_
_Success_(return == STATUS_SUCCESS)
NTSTATUS KrnlHlprIPHeaderModifySourceAddress(_In_ const FWP_VALUE* pValue,
_Inout_ NET_BUFFER_LIST* pNetBufferList,
_In_ const BOOLEAN recalculateChecksum = TRUE,
_In_ BOOLEAN convertByteOrder = FALSE);
_IRQL_requires_min_(PASSIVE_LEVEL)
_IRQL_requires_max_(DISPATCH_LEVEL)
_IRQL_requires_same_
_Check_return_
_Success_(return == STATUS_SUCCESS)
NTSTATUS KrnlHlprIPHeaderModifyDestinationAddress(_In_ const FWP_VALUE* pValue,
_Inout_ NET_BUFFER_LIST* pNetBufferList,
_In_ const BOOLEAN recalculateChecksum = TRUE,
_In_ BOOLEAN convertByteOrder = FALSE);
_IRQL_requires_min_(PASSIVE_LEVEL)
_IRQL_requires_max_(DISPATCH_LEVEL)
_IRQL_requires_same_
_Check_return_
_Success_(return == STATUS_SUCCESS)
NTSTATUS KrnlHlprIPHeaderModifyLoopbackToLocal(_In_ const FWPS_INCOMING_METADATA_VALUES* pMetadata,
_In_ const FWP_VALUE* pRemoteAddress,
_In_ const UINT32 ipHeaderSize,
_Inout_ NET_BUFFER_LIST* pNetBufferList);
_At_(*ppTransportHeader, _Pre_ _Notnull_)
_At_(*ppTransportHeader, _Post_ _Null_)
_Success_(*ppTransportHeader == 0)
inline VOID KrnlHlprTransportHeaderDestroy(_Inout_ VOID** ppTransportHeader);
_When_(return != STATUS_SUCCESS, _At_(*ppTransportHeader, _Post_ _Null_))
_When_(return == STATUS_SUCCESS, _At_(*ppTransportHeader, _Post_ _Notnull_))
_IRQL_requires_min_(PASSIVE_LEVEL)
_IRQL_requires_max_(DISPATCH_LEVEL)
_IRQL_requires_same_
_Success_(return == STATUS_SUCCESS)
NTSTATUS KrnlHlprTransportHeaderGet(_In_ NET_BUFFER_LIST* pNetBufferList,
_In_ const FWPS_INCOMING_VALUES* pClassifyValues,
_In_ const FWPS_INCOMING_METADATA_VALUES* pMetadata,
_Outptr_ VOID** ppTransportHeader,
_Inout_ BOOLEAN* pNeedToFreeMemory,
_Inout_opt_ IPPROTO* pProtocol = 0,
_Inout_opt_ FWP_DIRECTION* pDirection = 0,
_Inout_opt_ UINT32* pTransportHeaderSize = 0);
_When_(return != STATUS_SUCCESS, _At_(*ppTransportHeader, _Post_ _Null_))
_When_(return == STATUS_SUCCESS, _At_(*ppTransportHeader, _Post_ _Notnull_))
_IRQL_requires_min_(PASSIVE_LEVEL)
_IRQL_requires_max_(DISPATCH_LEVEL)
_IRQL_requires_same_
_Success_(return == STATUS_SUCCESS)
NTSTATUS KrnlHlprTransportHeaderGet(_In_ NET_BUFFER_LIST* pNetBufferList,
_Outptr_ VOID** ppTransportHeader,
_Inout_ BOOLEAN* pNeedToFreeMemory,
_In_ UINT32 transportHeaderSize = 0);
_When_(return != STATUS_SUCCESS, _At_(*ppICMPv4Header, _Post_ _Null_))
_When_(return == STATUS_SUCCESS, _At_(*ppICMPv4Header, _Post_ _Notnull_))
_IRQL_requires_min_(PASSIVE_LEVEL)
_IRQL_requires_max_(DISPATCH_LEVEL)
_IRQL_requires_same_
_Success_(return == STATUS_SUCCESS)
NTSTATUS KrnlHlprICMPv4HeaderGet(_In_ NET_BUFFER_LIST* pNetBufferList,
_Outptr_ VOID** ppICMPv4Header,
_Inout_ BOOLEAN* pNeedToFreeMemory,
_In_ UINT32 icmpHeaderSize = 0);
_IRQL_requires_min_(PASSIVE_LEVEL)
_IRQL_requires_max_(DISPATCH_LEVEL)
_IRQL_requires_same_
_Check_return_
_Success_(return == STATUS_SUCCESS)
NTSTATUS KrnlHlprICMPv4HeaderModifyType(_In_ const FWP_VALUE* pValue,
_Inout_ NET_BUFFER_LIST* pNetBufferList,
_In_ UINT32 icmpHeaderSize = 0);
_IRQL_requires_min_(PASSIVE_LEVEL)
_IRQL_requires_max_(DISPATCH_LEVEL)
_IRQL_requires_same_
_Check_return_
_Success_(return == STATUS_SUCCESS)
NTSTATUS KrnlHlprICMPv4HeaderModifyCode(_In_ const FWP_VALUE* pValue,
_Inout_ NET_BUFFER_LIST* pNetBufferList,
_In_ UINT32 icmpHeaderSize = 0);
_When_(return != STATUS_SUCCESS, _At_(*ppICMPv4Header, _Post_ _Null_))
_When_(return == STATUS_SUCCESS, _At_(*ppICMPv4Header, _Post_ _Notnull_))
_IRQL_requires_min_(PASSIVE_LEVEL)
_IRQL_requires_max_(DISPATCH_LEVEL)
_IRQL_requires_same_
_Success_(return == STATUS_SUCCESS)
NTSTATUS KrnlHlprICMPv6HeaderGet(_In_ NET_BUFFER_LIST* pNetBufferList,
_Outptr_ VOID** ppICMPv4Header,
_Inout_ BOOLEAN* pNeedToFreeMemory,
_In_ UINT32 icmpHeaderSize = 0);
_IRQL_requires_min_(PASSIVE_LEVEL)
_IRQL_requires_max_(DISPATCH_LEVEL)
_IRQL_requires_same_
_Check_return_
_Success_(return == STATUS_SUCCESS)
NTSTATUS KrnlHlprICMPv6HeaderModifyType(_In_ const FWP_VALUE* pValue,
_Inout_ NET_BUFFER_LIST* pNetBufferList,
_In_ UINT32 icmpHeaderSize = 0);
_IRQL_requires_min_(PASSIVE_LEVEL)
_IRQL_requires_max_(DISPATCH_LEVEL)
_IRQL_requires_same_
_Check_return_
_Success_(return == STATUS_SUCCESS)
NTSTATUS KrnlHlprICMPv6HeaderModifyCode(_In_ const FWP_VALUE* pValue,
_Inout_ NET_BUFFER_LIST* pNetBufferList,
_In_ UINT32 icmpHeaderSize = 0);
_When_(return != STATUS_SUCCESS, _At_(*ppTCPHeader, _Post_ _Null_))
_When_(return == STATUS_SUCCESS, _At_(*ppTCPHeader, _Post_ _Notnull_))
_IRQL_requires_min_(PASSIVE_LEVEL)
_IRQL_requires_max_(DISPATCH_LEVEL)
_IRQL_requires_same_
_Success_(return == STATUS_SUCCESS)
NTSTATUS KrnlHlprTCPHeaderGet(_In_ NET_BUFFER_LIST* pNetBufferList,
_Outptr_ VOID** ppTCPHeader,
_Inout_ BOOLEAN* pNeedToFreeMemory,
_In_ UINT32 tcpHeaderSize = 0);
_IRQL_requires_min_(PASSIVE_LEVEL)
_IRQL_requires_max_(DISPATCH_LEVEL)
_IRQL_requires_same_
_Check_return_
_Success_(return == STATUS_SUCCESS)
NTSTATUS KrnlHlprTCPHeaderModifySourcePort(_In_ const FWP_VALUE* pValue,
_Inout_ NET_BUFFER_LIST* pNetBufferList,
_In_ UINT32 tcpHeaderSize = 0,
_In_ BOOLEAN convertByteOrder = FALSE);
_IRQL_requires_min_(PASSIVE_LEVEL)
_IRQL_requires_max_(DISPATCH_LEVEL)
_IRQL_requires_same_
_Check_return_
_Success_(return == STATUS_SUCCESS)
NTSTATUS KrnlHlprTCPHeaderModifyDestinationPort(_In_ const FWP_VALUE* pValue,
_Inout_ NET_BUFFER_LIST* pNetBufferList,
_In_ UINT32 tcpHeaderSize = 0,
_In_ BOOLEAN convertByteOrder = FALSE);
_When_(return != STATUS_SUCCESS, _At_(*ppUDPHeader, _Post_ _Null_))
_When_(return == STATUS_SUCCESS, _At_(*ppUDPHeader, _Post_ _Notnull_))
_IRQL_requires_min_(PASSIVE_LEVEL)
_IRQL_requires_max_(DISPATCH_LEVEL)
_IRQL_requires_same_
_Success_(return == STATUS_SUCCESS)
NTSTATUS KrnlHlprUDPHeaderGet(_In_ NET_BUFFER_LIST* pNetBufferList,
_Outptr_ VOID** ppUDPHeader,
_Inout_ BOOLEAN* pNeedToFreeMemory,
_In_ UINT32 udpHeaderSize = 0);
_IRQL_requires_min_(PASSIVE_LEVEL)
_IRQL_requires_max_(DISPATCH_LEVEL)
_IRQL_requires_same_
_Check_return_
_Success_(return == STATUS_SUCCESS)
NTSTATUS KrnlHlprUDPHeaderModifySourcePort(_In_ const FWP_VALUE* pValue,
_Inout_ NET_BUFFER_LIST* pNetBufferList,
_In_ UINT32 udpHeaderSize = 0,
_In_ BOOLEAN convertByteOrder = FALSE);
_IRQL_requires_min_(PASSIVE_LEVEL)
_IRQL_requires_max_(DISPATCH_LEVEL)
_IRQL_requires_same_
_Check_return_
_Success_(return == STATUS_SUCCESS)
NTSTATUS KrnlHlprUDPHeaderModifyDestinationPort(_In_ const FWP_VALUE* pValue,
_Inout_ NET_BUFFER_LIST* pNetBufferList,
_In_ UINT32 udpheaderSize = 0,
_In_ BOOLEAN convertByteOrder = FALSE);
#endif /// HELPERFUNCTIONS_HEADERS_H
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