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////////////////////////////////////////////////////////////////////////////////////////////////////
//
// Copyright (c) 2012 Microsoft Corporation. All Rights Reserved.
//
// Module Name:
// HelperFunctions_ClassifyData.h
//
// Abstract:
// This module contains prototypes for kernel helper functions that assist with CLASSIFY_DATA.
//
// Author:
// Dusty Harper (DHarper)
//
// Revision History:
//
// [ Month ][Day] [Year] - [Revision]-[ Comments ]
// May 01, 2010 - 1.0 - Creation
//
////////////////////////////////////////////////////////////////////////////////////////////////////
#ifndef HELPERFUNCTIONS_CLASSIFY_DATA_H
#define HELPERFUNCTIONS_CLASSIFY_DATA_H
#if DBG
extern INT64 g_OutstandingNBLReferences;
#endif /// DBG
typedef struct CLASSIFY_DATA_
{
const FWPS_INCOMING_VALUES* pClassifyValues;
const FWPS_INCOMING_METADATA_VALUES* pMetadataValues;
VOID* pPacket; /// NET_BUFFER_LIST | FWPS_STREAM_CALLOUT_IO_PACKET
const VOID* pClassifyContext;
const FWPS_FILTER* pFilter;
UINT64 flowContext;
FWPS_CLASSIFY_OUT* pClassifyOut;
UINT64 classifyContextHandle;
BOOLEAN chainedNBL;
UINT32 numChainedNBLs;
}CLASSIFY_DATA, *PCLASSIFY_DATA;
_IRQL_requires_min_(PASSIVE_LEVEL)
_IRQL_requires_max_(DISPATCH_LEVEL)
_IRQL_requires_same_
VOID KrnlHlprClassifyDataReleaseLocalCopy(_Inout_ CLASSIFY_DATA* pClassifyData);
_At_(*ppClassifyData, _Pre_ _Notnull_)
_At_(*ppClassifyData, _Post_ _Null_ __drv_freesMem(Pool))
_IRQL_requires_min_(PASSIVE_LEVEL)
_IRQL_requires_max_(DISPATCH_LEVEL)
_IRQL_requires_same_
_Success_(*ppClassifyData == 0)
VOID KrnlHlprClassifyDataDestroyLocalCopy(_Inout_ CLASSIFY_DATA** ppClassifyData);
_IRQL_requires_min_(PASSIVE_LEVEL)
_IRQL_requires_max_(DISPATCH_LEVEL)
_IRQL_requires_same_
_Success_(return == STATUS_SUCCESS)
NTSTATUS KrnlHlprClassifyDataAcquireLocalCopy(_Inout_ CLASSIFY_DATA* pClassifyData,
_In_ const FWPS_INCOMING_VALUES* pClassifyValues,
_In_ const FWPS_INCOMING_METADATA_VALUES* pMetadata,
_In_opt_ VOID* pPacket,
_In_opt_ const VOID* pClassifyContext,
_In_ const FWPS_FILTER* pFilter,
_In_ const UINT64 flowContext,
_In_ FWPS_CLASSIFY_OUT* pClassifyOut);
_At_(*ppClassifyData, _Pre_ _Null_)
_When_(return != STATUS_SUCCESS, _At_(*ppClassifyData, _Post_ _Null_))
_When_(return == STATUS_SUCCESS, _At_(*ppClassifyData, _Post_ _Notnull_ __drv_allocatesMem(Pool)))
_IRQL_requires_min_(PASSIVE_LEVEL)
_IRQL_requires_max_(DISPATCH_LEVEL)
_IRQL_requires_same_
_Check_return_
_Success_(return == STATUS_SUCCESS)
NTSTATUS KrnlHlprClassifyDataCreateLocalCopy(_Outptr_ CLASSIFY_DATA** ppClassifyData,
_In_ const FWPS_INCOMING_VALUES* pClassifyValues,
_In_ const FWPS_INCOMING_METADATA_VALUES* pMetadata,
_In_opt_ VOID* pPacket,
_In_opt_ const VOID* pClassifyContext,
_In_ const FWPS_FILTER* pFilter,
_In_ const UINT64 flowContext,
_In_ FWPS_CLASSIFY_OUT* pClassifyOut);
#endif /// HELPERFUNCTIONS_CLASSIFY_DATA_H
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