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873 lines
16 KiB
873 lines
16 KiB
/*++
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Copyright (c) 1995 Microsoft Corporation
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Module Name:
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ripmain.c
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Abstract:
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Contains the rcv and worker threads
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Author:
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Stefan Solomon 07/06/1995
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Revision History:
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--*/
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#include "precomp.h"
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#pragma hdrstop
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DWORD
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APIENTRY
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RegisterProtocol(
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IN OUT PMPR_ROUTING_CHARACTERISTICS pRoutingChar,
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IN OUT PMPR_SERVICE_CHARACTERISTICS pServiceChar
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);
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DWORD
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APIENTRY
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StartProtocol(
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IN HANDLE hMgrNotifyEvent,
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IN PSUPPORT_FUNCTIONS pSupportFunctions,
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IN PVOID pConfig
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);
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DWORD
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APIENTRY
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StopProtocol(
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VOID
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);
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DWORD
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APIENTRY
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GetGlobalInfo(
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IN OUT PVOID pConfig,
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IN OUT PDWORD pdwSize
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);
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DWORD
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APIENTRY
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SetGlobalInfo(
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IN PVOID pConfig
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);
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DWORD
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APIENTRY
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AddInterface(
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IN PWCHAR pwszInterfaceName,
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IN DWORD dwIndex,
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IN NET_INTERFACE_TYPE dwIfType,
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IN PVOID pConfig
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);
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DWORD
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APIENTRY
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DeleteInterface(
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IN DWORD dwIndex
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);
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DWORD
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APIENTRY
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GetEventMessage(
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OUT ROUTING_PROTOCOL_EVENTS *pEvent,
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OUT MESSAGE *pResult
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);
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DWORD
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APIENTRY
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GetInterfaceConfigInfo(
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IN DWORD dwIndex,
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IN OUT PVOID pConfig,
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IN OUT PDWORD pdwSize
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);
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DWORD
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APIENTRY
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SetInterfaceConfigInfo(
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IN DWORD dwIndex,
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IN PVOID pConfig
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);
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DWORD
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APIENTRY
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BindInterface(
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IN DWORD dwIndex,
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IN PVOID pBinding
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);
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DWORD
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APIENTRY
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UnbindInterface(
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IN DWORD dwIndex
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);
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DWORD
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APIENTRY
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EnableInterface(
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IN DWORD dwIndex
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);
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DWORD
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APIENTRY
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DisableInterface(
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IN DWORD dwIndex
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);
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DWORD
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APIENTRY
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DoUpdateRoutes(
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IN DWORD dwIndex
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);
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DWORD
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APIENTRY
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MibCreate(
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IN DWORD dwInputSize,
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IN PVOID pInputData
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);
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DWORD
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APIENTRY
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MibDelete(
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IN DWORD dwInputSize,
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IN PVOID pInputData
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);
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DWORD
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APIENTRY
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MibGet(
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IN DWORD dwInputSize,
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IN PVOID pInputData,
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IN OUT PDWORD pdwOutputSize,
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OUT PVOID pOutputData
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);
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DWORD
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APIENTRY
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MibSet(
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IN DWORD dwInputSize,
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IN PVOID pInputData
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);
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DWORD
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APIENTRY
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MibGetFirst(
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IN DWORD dwInputSize,
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IN PVOID pInputData,
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IN OUT PDWORD pdwOutputSize,
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OUT PVOID pOutputData
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);
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DWORD
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APIENTRY
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MibGetNext(
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IN DWORD dwInputSize,
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IN PVOID pInputData,
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IN OUT PDWORD pdwOutputSize,
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OUT PVOID pOutputData
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);
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// Router Manager Notification Event
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HANDLE RM_Event;
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TCHAR ModuleName[MAX_PATH+1];
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VOID
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WorkerThread(VOID);
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DWORD
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CreateWorkerThreadObjects(VOID);
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VOID
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DestroyWorkerThreadObjects(VOID);
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VOID
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ProcessDequeuedIoPacket(DWORD ErrorCode,
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DWORD BytesTransferred,
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LPOVERLAPPED Overlappedp);
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BOOL WINAPI
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IpxRipDllEntry(HINSTANCE hInstDll,
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DWORD fdwReason,
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LPVOID pReserved)
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{
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switch (fdwReason)
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{
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case DLL_PROCESS_ATTACH:
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GetModuleFileName (hInstDll, ModuleName,
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sizeof (ModuleName)/sizeof (ModuleName[0]));
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SS_DBGINITIALIZE;
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RipOperState = OPER_STATE_DOWN;
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// Create the database lock
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InitializeCriticalSection(&DbaseCritSec);
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// Create the queues lock
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InitializeCriticalSection(&QueuesCritSec);
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// Create the RIP changed list lock
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InitializeCriticalSection(&RipChangedListCritSec);
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break;
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case DLL_PROCESS_DETACH:
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// delete the RIP changed list lock
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DeleteCriticalSection(&RipChangedListCritSec);
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// delete the database lock
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DeleteCriticalSection(&DbaseCritSec);
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// delete the queues lock
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DeleteCriticalSection(&QueuesCritSec);
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break;
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default:
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break;
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}
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return TRUE;
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}
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DWORD WINAPI
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RegisterProtocol(
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IN OUT PMPR_ROUTING_CHARACTERISTICS pRoutingChar,
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IN OUT PMPR_SERVICE_CHARACTERISTICS pServiceChar
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)
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{
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if(pRoutingChar->dwProtocolId != IPX_PROTOCOL_RIP)
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{
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return ERROR_NOT_SUPPORTED;
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}
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pServiceChar->fSupportedFunctionality = 0;
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pRoutingChar->fSupportedFunctionality = (ROUTING | DEMAND_UPDATE_ROUTES);
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pRoutingChar->pfnStartProtocol = StartProtocol;
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pRoutingChar->pfnStopProtocol = StopProtocol;
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pRoutingChar->pfnAddInterface = AddInterface;
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pRoutingChar->pfnDeleteInterface = DeleteInterface;
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pRoutingChar->pfnGetEventMessage = GetEventMessage;
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pRoutingChar->pfnGetInterfaceInfo = GetInterfaceConfigInfo;
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pRoutingChar->pfnSetInterfaceInfo = SetInterfaceConfigInfo;
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pRoutingChar->pfnBindInterface = BindInterface;
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pRoutingChar->pfnUnbindInterface = UnbindInterface;
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pRoutingChar->pfnEnableInterface = EnableInterface;
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pRoutingChar->pfnDisableInterface = DisableInterface;
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pRoutingChar->pfnGetGlobalInfo = GetGlobalInfo;
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pRoutingChar->pfnSetGlobalInfo = SetGlobalInfo;
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pRoutingChar->pfnMibCreateEntry = MibCreate;
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pRoutingChar->pfnMibDeleteEntry = MibDelete;
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pRoutingChar->pfnMibGetEntry = MibGet;
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pRoutingChar->pfnMibSetEntry = MibSet;
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pRoutingChar->pfnMibGetFirstEntry = MibGetFirst;
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pRoutingChar->pfnMibGetNextEntry = MibGetNext;
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pRoutingChar->pfnUpdateRoutes = DoUpdateRoutes;
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return NO_ERROR;
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}
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DWORD WINAPI
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StartProtocol(IN HANDLE NotificationEvent,
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IN PSUPPORT_FUNCTIONS SupportFunctions,
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IN PVOID GlobalInfo)
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{
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#define ripGlobalInfo ((PRIP_GLOBAL_INFO)GlobalInfo)
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DWORD threadid, i;
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HANDLE ThreadHandle;
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RipEventLogMask = ripGlobalInfo->EventLogMask;
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StartTracing();
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Trace(INIT_TRACE, "StartProtocol: Entered\n");
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ACQUIRE_DATABASE_LOCK;
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ACQUIRE_QUEUES_LOCK;
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RipOperState = OPER_STATE_STARTING;
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GetIpxRipRegistryParameters();
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RM_Event = NotificationEvent;
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//init the interfaces database
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InitIfDbase();
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//
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// init all the queues
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//
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// InitializeListHead(&WorkersQueue);
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InitializeListHead(&TimerQueue);
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InitializeListHead(&RepostRcvPacketsQueue);
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InitializeListHead(&RipMessageQueue);
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// create the workers work items heap
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if(CreateWorkItemsManager() != NO_ERROR) {
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goto ErrorExit;
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}
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// open the RIP socket for I/O
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if(OpenRipSocket() != NO_ERROR) {
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Trace(INIT_TRACE, "Cannot open RIP socket\n");
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goto ErrorExit;
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}
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if(! BindIoCompletionCallback(RipSocketHandle,
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ProcessDequeuedIoPacket, 0)) {
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Trace(INIT_TRACE, "Cannot associate IO Completion Port\n");
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goto ErrorExit;
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}
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// create synchronization objects for the rip threads
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if(CreateWorkerThreadObjects() != NO_ERROR) {
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Trace(INIT_TRACE, "Cannot create synchronization objects\n");
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goto ErrorExit;
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}
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// Open RTM for RIP
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if(OpenRTM()) {
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Trace(INIT_TRACE, "Cannot open RTM\n");
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goto ErrorExit;
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}
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// create the Worker thread
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if ((ThreadHandle = CreateThread(
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(LPSECURITY_ATTRIBUTES) NULL,
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0,
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(LPTHREAD_START_ROUTINE) WorkerThread,
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NULL,
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0,
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&threadid)) == NULL) {
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// !!! log error cannot create the worker thread !!!
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goto ErrorExit;
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}
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else
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CloseHandle (ThreadHandle);
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RipOperState = OPER_STATE_UP;
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RELEASE_QUEUES_LOCK;
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RELEASE_DATABASE_LOCK;
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CreateStartChangesBcastWi();
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Trace(INIT_TRACE, "Started successfully\n");
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return NO_ERROR;
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ErrorExit:
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RELEASE_QUEUES_LOCK;
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RELEASE_DATABASE_LOCK;
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return ERROR_CAN_NOT_COMPLETE;
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#undef ripGlobalInfo
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}
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DWORD
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WINAPI
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StopProtocol(VOID)
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{
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PWORK_ITEM wip;
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Trace(INIT_TRACE, "StopProtocol: Entered\n");
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ACQUIRE_DATABASE_LOCK;
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if(RipOperState != OPER_STATE_UP) {
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SS_ASSERT(FALSE);
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goto ErrorExit;
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}
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RipOperState = OPER_STATE_STOPPING;
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// send interfaces shutdown work item to the workers
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if((wip = AllocateWorkItem(SHUTDOWN_INTERFACES_TYPE)) == NULL) {
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goto ErrorExit;
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}
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wip->WorkItemSpecific.WIS_ShutdownInterfaces.ShutdownState = SHUTDOWN_START;
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RtlQueueWorkItem(ProcessWorkItem, wip, 0);
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RELEASE_DATABASE_LOCK;
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return NO_ERROR;
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ErrorExit:
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RELEASE_DATABASE_LOCK;
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return ERROR_CAN_NOT_COMPLETE;
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}
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VOID
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WorkerThread(VOID)
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{
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DWORD rc;
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DWORD signaled_event, delay;
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ULONG dueTime = GetTickCount() + MAXULONG/2;
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PWORK_ITEM wip;
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PLIST_ENTRY lep;
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HANDLE hModuleReference;
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hModuleReference = LoadLibrary (ModuleName);
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StartReceiver();
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while(TRUE)
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{
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delay = dueTime - GetTickCount();
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if(delay < MAXULONG/2) {
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// dueTime is later then present time
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while((rc = WaitForMultipleObjects(
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MAX_WORKER_THREAD_OBJECTS,
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WorkerThreadObjects,
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FALSE, // wait any
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delay // timeout
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)) == WAIT_IO_COMPLETION);
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}
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else
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{
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// dueTime already happened
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rc = WAIT_TIMEOUT;
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}
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if(rc == WAIT_TIMEOUT) {
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dueTime = ProcessTimerQueue();
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}
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else
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{
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signaled_event = rc - WAIT_OBJECT_0;
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if(signaled_event < MAX_WORKER_THREAD_OBJECTS) {
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switch(signaled_event) {
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case TIMER_EVENT:
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dueTime = ProcessTimerQueue();
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break;
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case REPOST_RCV_PACKETS_EVENT:
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RepostRcvPackets();
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break;
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// case WORKERS_QUEUE_EVENT:
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// dequeue only one item from the work items queue
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// ACQUIRE_QUEUES_LOCK;
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// while(!IsListEmpty(&WorkersQueue)) {
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// lep = RemoveHeadList(&WorkersQueue);
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// wip = CONTAINING_RECORD(lep, WORK_ITEM, Linkage);
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// RELEASE_QUEUES_LOCK;
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// Queue the work item for processing by the
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// worker threads
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// RtlQueueWorkItem(ProcessWorkItem,
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// wip,
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// WT_EXECUTEINIOTHREAD); // never dieing workers so we can do send submits
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// and the thread won't die before send completes
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// ACQUIRE_QUEUES_LOCK;
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// }
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// RELEASE_QUEUES_LOCK;
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// break;
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case RTM_EVENT:
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ProcessRTMChanges();
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break;
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case RIP_CHANGES_EVENT:
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ProcessRIPChanges();
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break;
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case TERMINATE_WORKER_EVENT:
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// stop the StartChangesBcast work item
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DestroyStartChangesBcastWi = TRUE;
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// close the rip socket
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CloseRipSocket();
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FlushTimerQueue();
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CloseRTM();
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// wait until no more work items
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while(WorkItemsCount != 0) {
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Trace(INIT_TRACE, "Terminating: Waiting for work items to be freed: %d outstanding ...\n",
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WorkItemsCount);
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Sleep(1000);
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}
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// destroy worker thread objects
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DestroyWorkerThreadObjects();
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// destroy workers heap
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DestroyWorkItemsManager();
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// post stop complete message
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PostEventMessage(ROUTER_STOPPED, NULL);
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Trace(INIT_TRACE, "Terminating: Stop completed and STOP Event Message posted\n");
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FreeLibraryAndExitThread(hModuleReference, 0);
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break;
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default:
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break;
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}
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}
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}
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}
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}
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// table of handlers for work items which keep a reference to the if CB
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typedef VOID (* IF_WORK_ITEM_HANDLER)(PWORK_ITEM wip);
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IF_WORK_ITEM_HANDLER IfWorkItemHandler[] = {
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IfPeriodicBcast,
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IfCompleteGenResponse,
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IfChangeBcast,
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IfCheckUpdateStatus,
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IfPeriodicGenRequest
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};
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#define MAX_IF_WORK_ITEM_HANDLERS sizeof(IfWorkItemHandler)/sizeof(IF_WORK_ITEM_HANDLER)
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VOID
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ProcessWorkItem(PWORK_ITEM wip)
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{
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PLIST_ENTRY lep;
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PICB icbp;
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switch(wip->Type) {
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case RECEIVE_PACKET_TYPE:
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// this work item references the interface via the adapter index
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ACQUIRE_DATABASE_LOCK;
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if(RipOperState != OPER_STATE_UP) {
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RELEASE_DATABASE_LOCK;
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}
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else
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{
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if((icbp = GetInterfaceByAdapterIndex(wip->AdapterIndex)) != NULL) {
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wip->icbp = icbp;
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ACQUIRE_IF_LOCK(icbp);
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RELEASE_DATABASE_LOCK;
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ProcessReceivedPacket(wip);
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RELEASE_IF_LOCK(icbp);
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}
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else
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{
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RELEASE_DATABASE_LOCK;
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}
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}
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// queue the receive packet back to recv thread for reposting
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EnqueueRcvPacketToRepostQueue(wip);
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break;
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case START_CHANGES_BCAST_TYPE:
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ACQUIRE_DATABASE_LOCK;
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StartChangesBcast(wip);
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RELEASE_DATABASE_LOCK;
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break;
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case SHUTDOWN_INTERFACES_TYPE:
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ACQUIRE_DATABASE_LOCK;
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ShutdownInterfaces(wip);
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RELEASE_DATABASE_LOCK;
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break;
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case DEBUG_TYPE:
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FreeWorkItem(wip);
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break;
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default:
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// all these work items reference the interface via an if CB pointer
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icbp = wip->icbp;
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ACQUIRE_IF_LOCK(icbp);
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(*IfWorkItemHandler[wip->Type])(wip);
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if(icbp->Discarded) {
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RELEASE_IF_LOCK(icbp);
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ACQUIRE_DATABASE_LOCK;
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ACQUIRE_IF_LOCK(icbp);
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if(--icbp->RefCount == 0) {
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|
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// remove the if CB from the discarded queue and free it
|
|
RemoveEntryList(&icbp->IfListLinkage);
|
|
|
|
// free the interface CB
|
|
Trace(INIT_TRACE, "ProcessWorkItem: Free DISCARDED if CB for if # %d\n", icbp->InterfaceIndex);
|
|
|
|
DestroyInterfaceCB(icbp);
|
|
}
|
|
else
|
|
{
|
|
RELEASE_IF_LOCK(icbp);
|
|
}
|
|
|
|
RELEASE_DATABASE_LOCK;
|
|
}
|
|
else
|
|
{
|
|
icbp->RefCount--;
|
|
RELEASE_IF_LOCK(icbp);
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
DWORD
|
|
WINAPI
|
|
GetEventMessage(ROUTING_PROTOCOL_EVENTS *Event,
|
|
PMESSAGE Result)
|
|
{
|
|
PRIP_MESSAGE emp;
|
|
PLIST_ENTRY lep;
|
|
|
|
Trace(INIT_TRACE, "GetEventMessage: Entered\n");
|
|
|
|
ACQUIRE_DATABASE_LOCK;
|
|
|
|
if((RipOperState == OPER_STATE_DOWN) ||
|
|
(RipOperState == OPER_STATE_STARTING)) {
|
|
|
|
RELEASE_DATABASE_LOCK;
|
|
return ERROR_CAN_NOT_COMPLETE;
|
|
}
|
|
|
|
ACQUIRE_QUEUES_LOCK;
|
|
|
|
if(IsListEmpty(&RipMessageQueue)) {
|
|
|
|
RELEASE_QUEUES_LOCK;
|
|
|
|
RELEASE_DATABASE_LOCK;
|
|
return ERROR_NO_MORE_ITEMS;
|
|
}
|
|
|
|
lep = RemoveHeadList(&RipMessageQueue);
|
|
emp = CONTAINING_RECORD(lep, RIP_MESSAGE, Linkage);
|
|
|
|
*Event = emp->Event;
|
|
if(Result != NULL) {
|
|
|
|
*Result = emp->Result;
|
|
}
|
|
|
|
if(emp->Event == ROUTER_STOPPED) {
|
|
|
|
RipOperState = OPER_STATE_DOWN;
|
|
StopTracing();
|
|
}
|
|
|
|
GlobalFree(emp);
|
|
|
|
RELEASE_QUEUES_LOCK;
|
|
|
|
RELEASE_DATABASE_LOCK;
|
|
return NO_ERROR;
|
|
}
|
|
|
|
VOID
|
|
PostEventMessage(ROUTING_PROTOCOL_EVENTS Event,
|
|
PMESSAGE Result)
|
|
{
|
|
PRIP_MESSAGE emp;
|
|
|
|
if((emp = GlobalAlloc(GPTR, sizeof(RIP_MESSAGE))) == NULL) {
|
|
|
|
return;
|
|
}
|
|
|
|
emp->Event = Event;
|
|
|
|
if(Result != NULL) {
|
|
|
|
emp->Result = *Result;
|
|
}
|
|
|
|
ACQUIRE_QUEUES_LOCK;
|
|
|
|
InsertTailList(&RipMessageQueue, &emp->Linkage);
|
|
|
|
RELEASE_QUEUES_LOCK;
|
|
|
|
SetEvent(RM_Event);
|
|
}
|
|
|
|
|
|
DWORD
|
|
CreateWorkerThreadObjects(VOID)
|
|
{
|
|
int i;
|
|
|
|
for(i=0; i<MAX_WORKER_THREAD_OBJECTS; i++) {
|
|
|
|
if((WorkerThreadObjects[i] = CreateEvent(NULL,
|
|
FALSE,
|
|
FALSE,
|
|
NULL)) == NULL) {
|
|
return ERROR_CAN_NOT_COMPLETE;
|
|
}
|
|
}
|
|
|
|
return NO_ERROR;
|
|
}
|
|
|
|
|
|
VOID
|
|
DestroyWorkerThreadObjects(VOID)
|
|
{
|
|
int i;
|
|
|
|
for(i=0; i<MAX_WORKER_THREAD_OBJECTS; i++) {
|
|
|
|
CloseHandle(WorkerThreadObjects[i]);
|
|
}
|
|
}
|
|
|
|
|
|
DWORD WINAPI
|
|
SetGlobalInfo(PVOID GlobalInfo)
|
|
{
|
|
#define ripGlobalInfo ((PRIP_GLOBAL_INFO)GlobalInfo)
|
|
ACQUIRE_DATABASE_LOCK;
|
|
|
|
if(RipOperState != OPER_STATE_UP) {
|
|
|
|
RELEASE_DATABASE_LOCK;
|
|
return ERROR_CAN_NOT_COMPLETE;
|
|
}
|
|
|
|
RipEventLogMask = ripGlobalInfo->EventLogMask;
|
|
RELEASE_DATABASE_LOCK;
|
|
|
|
return NO_ERROR;
|
|
#undef ripGlobalInfo
|
|
}
|
|
|
|
|
|
DWORD WINAPI
|
|
GetGlobalInfo(
|
|
IN PVOID GlobalInfo,
|
|
IN OUT PULONG GlobalInfoSize
|
|
)
|
|
{
|
|
ACQUIRE_DATABASE_LOCK;
|
|
if(RipOperState != OPER_STATE_UP) {
|
|
|
|
RELEASE_DATABASE_LOCK;
|
|
return ERROR_CAN_NOT_COMPLETE;
|
|
}
|
|
|
|
if ((*GlobalInfoSize>=sizeof (RIP_GLOBAL_INFO))
|
|
&& (GlobalInfo!=NULL)) {
|
|
#define ripGlobalInfo ((PRIP_GLOBAL_INFO)GlobalInfo)
|
|
ripGlobalInfo->EventLogMask = RipEventLogMask;
|
|
#undef ripGlobalInfo
|
|
}
|
|
*GlobalInfoSize = sizeof (RIP_GLOBAL_INFO);
|
|
|
|
RELEASE_DATABASE_LOCK;
|
|
return NO_ERROR;
|
|
}
|
|
|
|
|
|
VOID
|
|
ProcessDequeuedIoPacket(DWORD ErrorCode,
|
|
DWORD BytesTransferred,
|
|
LPOVERLAPPED Overlappedp)
|
|
{
|
|
PWORK_ITEM wip;
|
|
|
|
wip = CONTAINING_RECORD(Overlappedp, WORK_ITEM, Overlapped);
|
|
wip->IoCompletionStatus = (DWORD)Overlappedp->Internal;
|
|
|
|
switch(wip->Type) {
|
|
|
|
case RECEIVE_PACKET_TYPE:
|
|
|
|
ReceiveComplete(wip);
|
|
break;
|
|
|
|
default:
|
|
|
|
SendComplete(wip);
|
|
break;
|
|
}
|
|
}
|