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594 lines
14 KiB
594 lines
14 KiB
//============================================================================
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// Copyright (c) 1995, Microsoft Corporation
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//
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// File: table.h
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//
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// History:
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// Abolade Gbadegesin Aug-8-1995 Created.
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//
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// V Raman Oct-3-1996
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// Added Deactivate Event to IF_TABLE_ENTRY
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//
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// V Raman Oct-27-1996
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// Removed Deactivate Event in IF_TABLE_ENTRY
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// and made interface deactivation synchronous
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//
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// Contains structures and macros used for table management.
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//============================================================================
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#ifndef _TABLE_H_
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#define _TABLE_H_
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#define GETMODE_EXACT 0
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#define GETMODE_FIRST 1
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#define GETMODE_NEXT 2
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//
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// TYPE DEFINITIONS FOR INTERFACE MANAGEMENT
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//
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//
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// struct: IF_TABLE_ENTRY
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//
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// declares the components of an interface table entry
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//
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//
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typedef struct _IF_TABLE_ENTRY {
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LIST_ENTRY ITE_LinkByAddress;
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LIST_ENTRY ITE_LinkByIndex;
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LIST_ENTRY ITE_HTLinkByIndex;
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NET_INTERFACE_TYPE ITE_Type;
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DWORD ITE_Index;
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DWORD ITE_Flags;
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HANDLE ITE_FullOrDemandUpdateTimer;
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IPRIP_IF_STATS ITE_Stats;
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PIPRIP_IF_CONFIG ITE_Config;
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PIPRIP_IF_BINDING ITE_Binding;
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SOCKET *ITE_Sockets;
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} IF_TABLE_ENTRY, *PIF_TABLE_ENTRY;
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#define ITEFLAG_ENABLED ((DWORD)0x00000001)
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#define ITEFLAG_BOUND ((DWORD)0x00000002)
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#define ITEFLAG_FULL_UPDATE_PENDING ((DWORD)0x00000004)
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#define ITEFLAG_FULL_UPDATE_INQUEUE ((DWORD)0x00000008)
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#define IF_IS_ENABLED(i) \
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((i)->ITE_Flags & ITEFLAG_ENABLED)
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#define IF_IS_BOUND(i) \
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((i)->ITE_Flags & ITEFLAG_BOUND)
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#define IF_IS_ACTIVE(i) \
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(IF_IS_BOUND(i) && IF_IS_ENABLED(i))
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#define IF_IS_DISABLED(i) !IF_IS_ENABLED(i)
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#define IF_IS_UNBOUND(i) !IF_IS_BOUND(i)
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#define IF_IS_INACTIVE(i) !IF_IS_ACTIVE(i)
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#define IF_FULL_UPDATE_PENDING(i) \
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((i)->ITE_Flags & ITEFLAG_FULL_UPDATE_PENDING)
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#define IF_FULL_UPDATE_INQUEUE(i) \
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((i)->ITE_Flags & ITEFLAG_FULL_UPDATE_INQUEUE)
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//
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// macros and definitions used by interface tables
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//
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#define IF_HASHTABLE_SIZE 29
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#define IF_HASHVALUE(i) ((i) % IF_HASHTABLE_SIZE)
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//
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// struct: IF_TABLE
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//
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// declares the structure of an interface table. consists of a hash-table
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// of IF_TABLE_ENTRY structures hashed on interface index, and a list
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// of all activated interfaces ordered by IP address
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//
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// The IT_CS section is used to synchronize the generation of updates;
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// it is acquired when updates are started and finished on interfaces
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// in this table, and thus it protects the flags field.
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//
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// The IT_RWL section is used to synchronize modifications to the table;
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// it must be acquired exclusively when entries are being added or deleted
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// from the table, and when the states of entries are being changed.
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// (e.g. binding, unbinding, enabling and disabling entries).
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//
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// IT_RWL must be acquired non-exclusively on all other acceses.
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//
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// When IT_RWL and IT_CS must both be acquired, IT_RWL must be acquired first.
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//
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typedef struct _IF_TABLE {
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DWORD IT_Created;
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DWORD IT_Flags;
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LARGE_INTEGER IT_LastUpdateTime;
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HANDLE IT_FinishTriggeredUpdateTimer;
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HANDLE IT_FinishFullUpdateTimer;
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CRITICAL_SECTION IT_CS;
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READ_WRITE_LOCK IT_RWL;
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LIST_ENTRY IT_ListByAddress;
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LIST_ENTRY IT_ListByIndex;
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LIST_ENTRY IT_HashTableByIndex[IF_HASHTABLE_SIZE];
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} IF_TABLE, *PIF_TABLE;
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//
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// constants and macros used for the flags field
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//
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#define IPRIP_FLAG_FULL_UPDATE_PENDING ((DWORD)0x00000001)
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#define IPRIP_FLAG_TRIGGERED_UPDATE_PENDING ((DWORD)0x00000002)
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#define IPRIP_FULL_UPDATE_PENDING(t) \
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((t)->IT_Flags & IPRIP_FLAG_FULL_UPDATE_PENDING)
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#define IPRIP_TRIGGERED_UPDATE_PENDING(t) \
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((t)->IT_Flags & IPRIP_FLAG_TRIGGERED_UPDATE_PENDING)
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DWORD
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CreateIfTable(
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PIF_TABLE pTable
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);
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DWORD
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DeleteIfTable(
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PIF_TABLE pTable
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);
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DWORD
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CreateIfEntry(
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PIF_TABLE pTable,
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DWORD dwIndex,
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NET_INTERFACE_TYPE dwIfType,
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PIPRIP_IF_CONFIG pConfig,
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PIF_TABLE_ENTRY *ppEntry
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);
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DWORD
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DeleteIfEntry(
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PIF_TABLE pIfTable,
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DWORD dwIndex
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);
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DWORD
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ValidateIfConfig(
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PIPRIP_IF_CONFIG pic
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);
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DWORD
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CreateIfSocket(
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PIF_TABLE_ENTRY pITE
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);
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DWORD
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DeleteIfSocket(
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PIF_TABLE_ENTRY pITE
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);
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DWORD
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BindIfEntry(
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PIF_TABLE pTable,
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DWORD dwIndex,
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PIP_ADAPTER_BINDING_INFO pBinding
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);
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DWORD
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UnBindIfEntry(
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PIF_TABLE pTable,
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DWORD dwIndex
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);
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DWORD
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EnableIfEntry(
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PIF_TABLE pTable,
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DWORD dwIndex
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);
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DWORD
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ConfigureIfEntry(
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PIF_TABLE pTable,
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DWORD dwIndex,
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PIPRIP_IF_CONFIG pConfig
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);
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DWORD
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DisableIfEntry(
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PIF_TABLE pTable,
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DWORD dwIndex
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);
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PIF_TABLE_ENTRY
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GetIfByIndex(
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PIF_TABLE pTable,
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DWORD dwIndex
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);
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PIF_TABLE_ENTRY
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GetIfByAddress(
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PIF_TABLE pTable,
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DWORD dwAddress,
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DWORD dwGetMode,
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PDWORD pdwErr
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);
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PIF_TABLE_ENTRY
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GetIfByListIndex(
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PIF_TABLE pTable,
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DWORD dwAddress,
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DWORD dwGetMode,
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PDWORD pdwErr
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);
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#define IF_TABLE_CREATED(pTable) ((pTable)->IT_Created == 0x12345678)
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//
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// TYPE DEFINITIONS FOR THE PEER STATISTICS HASH TABLE
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//
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//
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// struct: PEER_TABLE_ENTRY
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//
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// declares the structure of each entry in the peer table
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//
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typedef struct _PEER_TABLE_ENTRY {
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LIST_ENTRY PTE_LinkByAddress;
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LIST_ENTRY PTE_HTLinkByAddress;
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DWORD PTE_Address;
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IPRIP_PEER_STATS PTE_Stats;
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} PEER_TABLE_ENTRY, *PPEER_TABLE_ENTRY;
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//
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// macros and definitions used by peer statistics tables
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//
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#define PEER_HASHTABLE_SIZE 29
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#define PEER_HASHVALUE(a) \
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(((a) + \
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((a) >> 8) + \
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((a) >> 16) + \
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((a) >> 24)) % PEER_HASHTABLE_SIZE)
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//
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// struct: PEER_TABLE
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//
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// this table contains the entries for keeping statistics about each peer.
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// it consists of a hash-table of peer stats (for fast direct access to
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// a specific entry) and a list of peer stats entries ordered by address
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// (for easy enumeration via MibGetNext)
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//
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typedef struct _PEER_TABLE {
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READ_WRITE_LOCK PT_RWL;
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DWORD PT_Created;
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LIST_ENTRY PT_ListByAddress;
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LIST_ENTRY PT_HashTableByAddress[PEER_HASHTABLE_SIZE];
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} PEER_TABLE, *PPEER_TABLE;
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DWORD
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CreatePeerTable(
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PPEER_TABLE pTable
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);
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DWORD
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DeletePeerTable(
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PPEER_TABLE pTable
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);
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DWORD
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CreatePeerEntry(
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PPEER_TABLE pTable,
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DWORD dwAddress,
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PPEER_TABLE_ENTRY *ppEntry
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);
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DWORD
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DeletePeerEntry(
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PPEER_TABLE pTable,
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DWORD dwAddress
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);
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PPEER_TABLE_ENTRY
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GetPeerByAddress(
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PPEER_TABLE pTable,
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DWORD dwAddress,
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DWORD dwGetMode,
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PDWORD pdwErr
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);
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#define PEER_TABLE_CREATED(pTable) ((pTable)->PT_Created == 0x12345678)
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//
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// TYPE DEFINITIONS FOR THE ROUTE TABLE USED FOR NETWORK SUMMARY
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//
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//
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// struct: ROUTE_TABLE_ENTRY
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//
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// declares the structure of each entry in the route table
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//
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typedef struct _ROUTE_TABLE_ENTRY {
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LIST_ENTRY RTE_Link;
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DWORD RTE_TTL;
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DWORD RTE_HoldTTL;
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RIP_IP_ROUTE RTE_Route;
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} ROUTE_TABLE_ENTRY, *PROUTE_TABLE_ENTRY;
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//
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// declares the structure of the protocol specific data
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//
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//
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// macros and definitions used by the route table
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//
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//
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// These flags are used in the ProtocolSpecificData array
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// to distinguish routes pending expiration from routes pending removal,
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// and to store the route tag for each route.
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// The first DWORD in the PSD_Data array is treated here as a byte-array;
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// the first two bytes are used to store the route tag;
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// the third byte is used to store the route flag
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//
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#define PSD(route) (route)->RR_ProtocolSpecificData.PSD_Data
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#define PSD_TAG0 0
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#define PSD_TAG1 1
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#define PSD_FLAG 2
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#define ROUTEFLAG_SUMMARY ((BYTE)0x03)
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#define SETROUTEFLAG(route, flag) (((PBYTE)&PSD(route))[PSD_FLAG] = (flag))
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#define GETROUTEFLAG(route) ((PBYTE)&PSD(route))[PSD_FLAG]
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#define SETROUTETAG(route, tag) \
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((PBYTE)&PSD(route))[PSD_TAG0] = LOBYTE(tag), \
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((PBYTE)&PSD(route))[PSD_TAG1] = HIBYTE(tag)
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#define GETROUTETAG(route) \
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MAKEWORD(((PBYTE)&PSD(route))[PSD_TAG0],((PBYTE)&PSD(route))[PSD_TAG1])
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#define SETROUTEMETRIC(route, metric) \
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(route)->RR_FamilySpecificData.FSD_Metric1 = (metric)
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#define GETROUTEMETRIC(route) \
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(route)->RR_FamilySpecificData.FSD_Metric1
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#define COMPUTE_ROUTE_METRIC(route) \
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(route)->RR_FamilySpecificData.FSD_Metric = \
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(route)->RR_FamilySpecificData.FSD_Metric1
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//
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// Macros to manipulate entity specific info in RTMv2 routes
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//
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#define ESD(route) (route)->EntitySpecificInfo
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#define ESD_TAG0 0
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#define ESD_TAG1 1
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#define ESD_FLAG 2
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#define SETRIPFLAG(route, flag) (((PBYTE)&ESD(route))[ESD_FLAG] = (flag))
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#define GETRIPFLAG(route) ((PBYTE)&ESD(route))[ESD_FLAG]
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#define SETRIPTAG(route, tag) \
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((PBYTE)&ESD(route))[ESD_TAG0] = LOBYTE(tag), \
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((PBYTE)&ESD(route))[ESD_TAG1] = HIBYTE(tag)
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#define GETRIPTAG(route) \
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MAKEWORD(((PBYTE)&ESD(route))[ESD_TAG0],((PBYTE)&ESD(route))[ESD_TAG1])
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#define ROUTE_HASHTABLE_SIZE 29
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#define ROUTE_HASHVALUE(a) \
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(((a) + \
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((a) >> 8) + \
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((a) >> 16) + \
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((a) >> 24)) % ROUTE_HASHTABLE_SIZE)
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//
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// struct: ROUTE_TABLE
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//
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// declares the structure of a route table, which consists of a hash-table
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// of routes hashed on the destination network. Note that no synchronization
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// is included since this structure is only used during full-updates, to
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// store summary routes, and at most one thread may be sending a full-update
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// at any given time.
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//
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typedef struct _ROUTE_TABLE {
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DWORD RT_Created;
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LIST_ENTRY RT_HashTableByNetwork[ROUTE_HASHTABLE_SIZE];
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} ROUTE_TABLE, *PROUTE_TABLE;
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DWORD
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CreateRouteTable(
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PROUTE_TABLE pTable
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);
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DWORD
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DeleteRouteTable(
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PROUTE_TABLE pTable
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);
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DWORD
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WriteSummaryRoutes(
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PROUTE_TABLE pTable,
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HANDLE hRtmHandle
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);
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DWORD
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CreateRouteEntry(
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PROUTE_TABLE pTable,
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PRIP_IP_ROUTE pRoute,
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DWORD dwTTL,
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DWORD dwHoldTTL
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);
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DWORD
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DeleteRouteEntry(
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PROUTE_TABLE pTable,
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PRIP_IP_ROUTE pRoute
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);
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PROUTE_TABLE_ENTRY
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GetRouteByRoute(
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PROUTE_TABLE pTable,
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PRIP_IP_ROUTE pRoute
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);
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#define ROUTE_TABLE_CREATED(pTable) ((pTable)->RT_Created == 0x12345678)
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//
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// TYPE DEFINITIONS FOR BINDING TABLE
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//
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//
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// struct: BINDING_TABLE_ENTRY
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//
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// this entry contains a single binding.
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// a binding entry consists of an IP address, a network number (found
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// using the network class mask, not the subnet mask),
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// and a subnet mask.
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// All of the above are available when an interface is bound.
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// When a route arrives and its mask is to be guessed, its network number
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// can be computed (using the routes network class mask); we then search
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// the binding table for matching networks, and for each one we compare
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// (stored subnet mask) AND (interface IP address)
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// to
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// (stored subnet mask) AND (incoming route IP address).
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// When we find a match, (stored subnet mask) is our guess.
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//
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typedef struct _BINDING_TABLE_ENTRY {
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DWORD BTE_Address;
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DWORD BTE_Network;
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DWORD BTE_Netmask;
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LIST_ENTRY BTE_Link;
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} BINDING_TABLE_ENTRY, *PBINDING_TABLE_ENTRY;
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#define BINDING_HASHTABLE_SIZE 29
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#define BINDING_HASHVALUE(a) \
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(((a) + \
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((a) >> 8) + \
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((a) >> 16) + \
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((a) >> 24)) % BINDING_HASHTABLE_SIZE)
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//
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// struct: BINDING_TABLE
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//
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// this table is used to store binding information that is used to guess
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// the subnet masks of incoming routes. it contains the bindings of all
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// interfaces which have been added to IPRIP, in an array to speed up access
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//
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typedef struct _BINDING_TABLE {
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READ_WRITE_LOCK BT_RWL;
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DWORD BT_Created;
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LIST_ENTRY BT_HashTableByNetwork[BINDING_HASHTABLE_SIZE];
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} BINDING_TABLE, *PBINDING_TABLE;
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#define BINDING_TABLE_CREATED(b) ((b)->BT_Created == 0x12345678)
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DWORD
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CreateBindingTable(
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PBINDING_TABLE pTable
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);
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DWORD
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DeleteBindingTable(
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PBINDING_TABLE pTable
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);
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DWORD
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CreateBindingEntry(
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PBINDING_TABLE pTable,
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PIPRIP_IF_BINDING pib
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);
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DWORD
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DeleteBindingEntry(
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PBINDING_TABLE pTable,
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PIPRIP_IF_BINDING pib
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);
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DWORD
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GuessSubnetMask(
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DWORD dwAddress,
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PDWORD pdwNetclassMask
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);
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DWORD
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AddRtmRoute(
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RTM_ENTITY_HANDLE hRtmHandle,
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PRIP_IP_ROUTE prir,
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RTM_NEXTHOP_HANDLE hNextHop OPTIONAL,
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DWORD dwTimeOut,
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DWORD dwHoldTime,
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BOOL bActive
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);
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DWORD
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GetRouteInfo(
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IN RTM_ROUTE_HANDLE hRoute,
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IN PRTM_ROUTE_INFO pInRouteInfo OPTIONAL,
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IN PRTM_DEST_INFO pInDestInfo OPTIONAL,
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OUT PRIP_IP_ROUTE pRoute
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);
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#endif // _TABLE_H_
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