Leaked source code of windows server 2003
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/*++
Copyright (c) Microsoft Corporation. All rights reserved.
Module Name:
rtinfo.h
Abstract: Definitions of information block structuers used to exchange information in router API
--*/
#ifndef __ROUTING_RTINFO_H__#define __ROUTING_RTINFO_H__
#if _MSC_VER > 1000#pragma once#endif
//////////////////////////////////////////////////////////////////////////////// //// Information is passed to and from the Router Managers using a set of //// RTR_TOC_ENTRY structures. These structures are encapsulated by an //// RTR_INFO_BLOCK_HEADER. //// The general structure of this is: //// //// --- |-----------------------| --- //// | | | | //// | | RTR_INFO_BLOCK_HEADER | | //// | | | | //// | | TocEntriesCount = N | | //// | |-----------------------| | //// | | TocEntry[0] | | //// | | | | //// | | Offset of | | //// |<------ Associated Data | | //// | | | | //// | |-----------------------| | //// | Z Z | //// | | | | //// | |-----------------------| | //// | | TocEntry[N-1] | | //// | | | | //// | | Offset of | | //// | | Associated Data ------->| //// | | | | //// --- |-----------------------| | //// | Data for TocEntry[0] | | //// |-----------------------| | //// Z Z | //// |-----------------------| --- //// | Data for TocEntry[N-1]| //// |-----------------------| //// ////////////////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////// //// Each of the blocks of data must begin at a quadword aligned boundary. To //// get QUADWORD alignment, use the following macros. //// //// The block of data pointed to by an InfoBlock MUST be aligned. //// Use the alignment macro when writing the data portion into an infobase. //// This implies that for each ALIGN_POINTER operation done on a chunk //// of memory, the requested allocation must be ALIGN_SIZE greater //// than what is actually required (to be on the safe side) //// ////////////////////////////////////////////////////////////////////////////////
#define ALIGN_SIZE 0x00000008#define ALIGN_SHIFT (ALIGN_SIZE - 0x00000001) // 0x00000007#define ALIGN_MASK_POINTER (~(UINT_PTR)ALIGN_SHIFT) // 0xfffffff8#define ALIGN_MASK_LENGTH (~ALIGN_SHIFT) // 0xfffffff8#define ALIGN_MASK (~ALIGN_SHIFT) // 0xfffffff8
#define ALIGN_POINTER(ptr) { \ (ptr) = (PVOID)((DWORD_PTR)(ptr) + ALIGN_SHIFT); \ (ptr) = (PVOID)((DWORD_PTR)(ptr) & ALIGN_MASK_POINTER); \}
#define ALIGN_LENGTH(length) { \ (length) = (DWORD)((length) + ALIGN_SHIFT); \ (length) = (DWORD)((length) & ALIGN_MASK_LENGTH); \}
#define IS_ALIGNED(ptr) (((UINT_PTR)(ptr) & ALIGN_SHIFT) == 0x00000000)
//////////////////////////////////////////////////////////////////////////////// //// Table of Contents Entry //// ////////////////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////// //// Each entry describes a structure type, location within the information //// block and number of entries of the same type. //// ////////////////////////////////////////////////////////////////////////////////
typedef struct _RTR_TOC_ENTRY{ ULONG InfoType; // Info structure type ULONG InfoSize; // Size of the info structure ULONG Count; // How many info structures of this type ULONG Offset; // Offset of the first structure, from the start // of the info block header.}RTR_TOC_ENTRY, *PRTR_TOC_ENTRY;
//////////////////////////////////////////////////////////////////////////////// //// Info Block Header //// ////////////////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////// //// All Router information blocks start with this header //// ////////////////////////////////////////////////////////////////////////////////
#define RTR_INFO_BLOCK_VERSION 1
typedef struct _RTR_INFO_BLOCK_HEADER{ ULONG Version; // Version of the structure ULONG Size; // size of the whole block, including version ULONG TocEntriesCount;// Number of entries RTR_TOC_ENTRY TocEntry[1]; // Table of content followed by the actual // information blocks} RTR_INFO_BLOCK_HEADER, *PRTR_INFO_BLOCK_HEADER;
//// PVOID// GetInfoFromTocEntry(// IN PRTR_INFO_BLOCK_HEADER pInfoHdr,// IN PRTR_TOC_ENTRY pToc// )//
#define GetInfoFromTocEntry(hdr,toc) \ (((toc)->Offset < (hdr)->Size) ? ((PVOID)(((PBYTE)(hdr)) + (toc)->Offset)) : NULL)
#endif //__ROUTING_RTINFO_H__
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