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////////////////////////////////////////////////////////////////////////////////////////////////////
//
// Copyright (c) 2014 Microsoft Corporation. All Rights Reserved.
//
// Module Name:
// HelperFunctions_NetBuffer.h
//
// Abstract:
// This module contains prototypes for kernel helper functions that assist with NET_BUFFER and
// NET_BUFFER_LIST.
//
// Author:
// Dusty Harper (DHarper)
//
// Revision History:
//
// [ Month ][Day] [Year] - [Revision]-[ Comments ]
// May 01, 2010 - 1.0 - Creation
// December 13, 2013 - 1.1 - Add KrnlHlprNBLCreateFromBuffer,
// KrnlHlprNBLCopyToBuffer,
// KrnlHlprNBLDestroyNew,
// KrnlHlprNBLCreateNew
//
////////////////////////////////////////////////////////////////////////////////////////////////////
#ifndef HELPERFUNCTIONS_NET_BUFFER_H
#define HELPERFUNCTIONS_NET_BUFFER_H
_IRQL_requires_min_(PASSIVE_LEVEL)
_IRQL_requires_max_(DISPATCH_LEVEL)
_IRQL_requires_same_
_Success_(return != 0)
NET_BUFFER_LIST* KrnlHlprNBLCreateFromBuffer(_In_ NDIS_HANDLE nblPoolHandle,
_In_reads_(bufferSize) BYTE* pBuffer,
_In_ UINT32 bufferSize,
_Outptr_opt_result_maybenull_ PMDL* ppMDL);
_IRQL_requires_min_(PASSIVE_LEVEL)
_IRQL_requires_max_(DISPATCH_LEVEL)
_IRQL_requires_same_
_Success_(return != 0)
BYTE* KrnlHlprNBLCopyToBuffer(_In_opt_ NET_BUFFER_LIST* pTemplateNBL,
_Out_ UINT32* pSize,
_In_ UINT32 additionalSpace = 0);
_Success_(*ppNetBufferList == 0 && *ppMDL == 0 && *ppAllocatedBuffer == 0)
VOID KrnlHlprNBLDestroyNew(_Inout_opt_ NET_BUFFER_LIST** ppNetBufferList,
_Inout_opt_ PMDL* ppMDL,
_Inout_opt_ BYTE** ppAllocatedBuffer);
_IRQL_requires_min_(PASSIVE_LEVEL)
_IRQL_requires_max_(DISPATCH_LEVEL)
_IRQL_requires_same_
_Success_(return != 0)
NET_BUFFER_LIST* KrnlHlprNBLCreateNew(_In_ NDIS_HANDLE nblPoolHandle,
_In_opt_ NET_BUFFER_LIST* pTemplateNBL,
_Outptr_opt_result_buffer_maybenull_(*pSize) BYTE** ppAllocatedBuffer,
_Out_ UINT32* pSize,
_Outptr_opt_result_maybenull_ PMDL* ppMDL,
_In_ UINT32 additionalSpace = 0,
_In_ BOOLEAN isOutbound = FALSE);
_IRQL_requires_min_(PASSIVE_LEVEL)
_IRQL_requires_max_(DISPATCH_LEVEL)
_IRQL_requires_same_
UINT32 KrnlHlprNBLGetRequiredRefCount(_In_ const NET_BUFFER_LIST* pNBL,
_In_ BOOLEAN isChained = FALSE);
#endif /// HELPERFUNCTIONS_NET_BUFFER_H
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