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264 lines
7.6 KiB
264 lines
7.6 KiB
/*++
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Copyright (c) 1995 Microsoft Corporation
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Module Name:
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ripint.h
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Abstract:
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This module contains the definitions of the internal control structures
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used by the rip protocol module
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Author:
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Stefan Solomon 06/22/1995
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Revision History:
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--*/
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#ifndef _RIPINT_
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#define _RIPINT_
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//
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//*** RIP Internal Structures ***
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//
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// internal filter control block
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typedef struct _RIP_ROUTE_FILTER_INFO_I {
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ULONG Network;
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ULONG Mask;
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} RIP_ROUTE_FILTER_INFO_I, *PRIP_ROUTE_FILTER_INFO_I;
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typedef struct _RIP_IF_FILTERS_I {
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BOOL SupplyFilterAction; // TRUE - Pass, FALSE - Don't Pass
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ULONG SupplyFilterCount;
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BOOL ListenFilterAction; // TRUE - Pass, FALSE - Don't Pass
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ULONG ListenFilterCount;
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RIP_ROUTE_FILTER_INFO_I RouteFilterI[1];
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} RIP_IF_FILTERS_I, *PRIP_IF_FILTERS_I;
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// Interface Control Block
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typedef struct _ICB {
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ULONG InterfaceIndex;
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LIST_ENTRY IfListLinkage; // linkage in if list ordered by Index
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LIST_ENTRY IfHtLinkage; // linkage in if hash table
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LIST_ENTRY AdapterHtLinkage; // linkage in adapter hash table
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RIP_IF_INFO IfConfigInfo; // config info
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RIP_IF_STATS IfStats; // statistics
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ULONG RefCount; // reference counter
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IPX_ADAPTER_BINDING_INFO AdapterBindingInfo;
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CRITICAL_SECTION InterfaceLock;
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BOOL Discarded; // if the if CB is queued on discarded list
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LIST_ENTRY ChangesBcastQueue; // queue of bcast work items (packets) to be sent
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LIST_ENTRY AuxLinkage; // auxiliary linkage in temp queues
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USHORT LinkTickCount; // tick count equiv. of link speed
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ULONG IpxIfAdminState; // admin state of the IPX interface
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NET_INTERFACE_TYPE InterfaceType;
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UCHAR RemoteWkstaInternalNet[4]; // internal net of the remote client
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PRIP_IF_FILTERS_I RipIfFiltersIp; // pointer to the if filters block
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WCHAR InterfaceName[1];
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} ICB, *PICB;
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// Work Item
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typedef enum _WORK_ITEM_TYPE {
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PERIODIC_BCAST_PACKET_TYPE,
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GEN_RESPONSE_PACKET_TYPE,
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CHANGE_BCAST_PACKET_TYPE,
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UPDATE_STATUS_CHECK_TYPE,
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PERIODIC_GEN_REQUEST_TYPE,
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// if you change the order/number of work items above this line you
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// must change also the WorkItemHandler table
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RECEIVE_PACKET_TYPE,
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SEND_PACKET_TYPE,
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START_CHANGES_BCAST_TYPE,
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SHUTDOWN_INTERFACES_TYPE,
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DEBUG_TYPE
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} WORK_ITEM_TYPE;
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typedef struct _ENUM_ROUTES_SPECIFIC {
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HANDLE RtmEnumerationHandle;
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} ENUM_ROUTES_SPECIFIC, *PENUM_ROUTES_SPECIFIC;
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typedef struct _UPDATE_SPECIFIC {
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ULONG UpdatedRoutesCount;
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ULONG UpdateRetriesCount;
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ULONG OldRipListen; // saved Listen state when updating routes
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ULONG OldRipInterval; // saved update interval when updating routes
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} UPDATE_SPECIFIC, *PUPDATE_SPECIFIC;
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typedef struct _SHUTDOWN_INTERFACES_SPECIFIC {
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ULONG ShutdownState;
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} SHUTDOWN_INTERFACES_SPECIFIC, *PSHUTDOWN_INTERFACES_SPECIFIC;
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typedef struct _DEBUG_SPECIFIC {
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ULONG DebugData;
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} DEBUG_SPECIFIC, *PDEBUG_SPECIFIC;
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// shutdown states definitions
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#define SHUTDOWN_START 0
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#define SHUTDOWN_STATUS_CHECK 1
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typedef union _WORK_ITEM_SPECIFIC {
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ENUM_ROUTES_SPECIFIC WIS_EnumRoutes;
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UPDATE_SPECIFIC WIS_Update;
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SHUTDOWN_INTERFACES_SPECIFIC WIS_ShutdownInterfaces;
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DEBUG_SPECIFIC WIS_Debug;
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} WORK_ITEM_SPECIFIC, *PWORK_ITEM_SPECIFIC;
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typedef struct _WORK_ITEM {
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LIST_ENTRY Linkage; // linkage in the worker's work queue
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WORK_ITEM_TYPE Type; // work item type
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DWORD TimeStamp; // used by the send complete to stamp for interpacket gap calc.
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DWORD DueTime; // use for timer queue
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PICB icbp; // ptr to the referenced if CB
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ULONG AdapterIndex;
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DWORD IoCompletionStatus;
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WORK_ITEM_SPECIFIC WorkItemSpecific;
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OVERLAPPED Overlapped;
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ADDRESS_RESERVED AddressReserved;
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UCHAR Packet[1];
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} WORK_ITEM, *PWORK_ITEM;
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// event and message queued for the router manager
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typedef struct _RIP_MESSAGE {
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LIST_ENTRY Linkage;
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ROUTING_PROTOCOL_EVENTS Event;
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MESSAGE Result;
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} RIP_MESSAGE, *PRIP_MESSAGE;
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//
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//*** Constants ***
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//
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// Worker Thread Wait Objects Indices
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#define TIMER_EVENT 0
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#define REPOST_RCV_PACKETS_EVENT 1
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//#define WORKERS_QUEUE_EVENT 2
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#define RTM_EVENT 2
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#define RIP_CHANGES_EVENT 3
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#define TERMINATE_WORKER_EVENT 4
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#define MAX_WORKER_THREAD_OBJECTS 5
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// invalid (unbound) adapter
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#define INVALID_ADAPTER_INDEX 0xFFFFFFFF
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// size of interfaces and adapter hash tables
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#define IF_INDEX_HASH_TABLE_SIZE 32
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#define ADAPTER_INDEX_HASH_TABLE_SIZE 32
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// RIP packet length values
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#define FULL_PACKET RIP_PACKET_LEN
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#define EMPTY_PACKET RIP_INFO
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// Time interval to check and broadcast changes (in milisec)
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#define CHANGES_BCAST_TIME 1000
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//
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//*** Macros ***
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#define ACQUIRE_DATABASE_LOCK EnterCriticalSection(&DbaseCritSec)
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#define RELEASE_DATABASE_LOCK LeaveCriticalSection(&DbaseCritSec)
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#define ACQUIRE_QUEUES_LOCK EnterCriticalSection(&QueuesCritSec)
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#define RELEASE_QUEUES_LOCK LeaveCriticalSection(&QueuesCritSec)
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#define ACQUIRE_RIP_CHANGED_LIST_LOCK EnterCriticalSection(&RipChangedListCritSec)
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#define RELEASE_RIP_CHANGED_LIST_LOCK LeaveCriticalSection(&RipChangedListCritSec)
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#define ACQUIRE_IF_LOCK(icbp) EnterCriticalSection(&(icbp)->InterfaceLock)
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#define RELEASE_IF_LOCK(icbp) LeaveCriticalSection(&(icbp)->InterfaceLock)
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// macro to assess if time1 is later then time2 when both are ulong with wrap around
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#define IsLater(time1, time2) (((time1) - (time2)) < MAXULONG/2)
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// enqueue a work item in timer queue and increment the interface ref count
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#define IfRefStartWiTimer(wip, delay) (wip)->icbp->RefCount++;\
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StartWiTimer((wip), (delay));
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// Update Time and Route Time To Live definitions
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#define PERIODIC_UPDATE_INTERVAL_SECS(icbp) (icbp)->IfConfigInfo.PeriodicUpdateInterval // in seconds
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#define PERIODIC_UPDATE_INTERVAL_MILISECS(icbp) (PERIODIC_UPDATE_INTERVAL_SECS(icbp)) * 1000
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#define AGE_INTERVAL_MULTIPLIER(icbp) (icbp)->IfConfigInfo.AgeIntervalMultiplier
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#define ROUTE_TIME_TO_LIVE_SECS(icbp) (AGE_INTERVAL_MULTIPLIER(icbp)) * (PERIODIC_UPDATE_INTERVAL_SECS(icbp))
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#define CHECK_UPDATE_TIME_MILISECS (CheckUpdateTime*1000)
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//
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//*** Global Variables ***
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//
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extern CRITICAL_SECTION DbaseCritSec;
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extern CRITICAL_SECTION QueuesCritSec;
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extern CRITICAL_SECTION RipChangedListCritSec;
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extern ULONG RipOperState;
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extern LIST_ENTRY IndexIfList;
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extern LIST_ENTRY IfIndexHt[IF_INDEX_HASH_TABLE_SIZE];
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extern LIST_ENTRY AdapterIndexHt[ADAPTER_INDEX_HASH_TABLE_SIZE];
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extern LIST_ENTRY DiscardedIfList;
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extern CRITICAL_SECTION QueuesCritSec;
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extern ULONG RcvPostedCount;
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extern LIST_ENTRY RepostRcvPacketsQueue;
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extern LIST_ENTRY RipMessageQueue;
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extern HANDLE WorkerThreadObjects[MAX_WORKER_THREAD_OBJECTS];
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//extern LIST_ENTRY WorkersQueue;
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extern LIST_ENTRY TimerQueue;
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extern BOOL DestroyStartChangesBcastWi;
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extern ULONG WorkItemsCount;
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extern ULONG TimerTimeout;
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extern ULONG RipOperState;
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extern UCHAR bcastnet[4];
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extern UCHAR bcastnode[6];
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extern ULONG RcvPostedCount;
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extern ULONG SendPostedCount;
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extern UCHAR nullnet[4];
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extern HANDLE RipSocketHandle;
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extern HANDLE IoCompletionPortHandle;
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extern ULONG RipFiltersCount;
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extern ULONG SendGenReqOnWkstaDialLinks;
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extern ULONG CheckUpdateTime;
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#endif
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