80 lines
2.9 KiB
C
80 lines
2.9 KiB
C
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/***************************************************************************
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*
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* TD.H
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*
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* This module contains Transport Driver defines and structures
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*
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* Copyright Microsoft, 1998
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*
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*
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****************************************************************************/
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/*
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* Maximum number of zero byte reads before we will drop the client connection
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*/
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#define MAXIMUM_ZERO_BYTE_READS 100
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/*
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* TD error message structure
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*/
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typedef struct _TDERRORMESSAGE {
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ULONG Error;
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char * pMessage;
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} TDERRORMESSAGE, * PTDERRORMESSAGE;
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/*
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* TD structure
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*/
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typedef struct _TD {
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PSDCONTEXT pContext;
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ULONG PdFlag; // pd flags (PD_?)
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SDCLASS SdClass; // class of sd (PdAsync, PdReli, ...)
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PDPARAMS Params; // pd parameters
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PCLIENTMODULES pClient; // pointer to winstation client data structure
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PPROTOCOLSTATUS pStatus; // pointer to winstation status structure
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PFILE_OBJECT pFileObject; // file object for transport I/O
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PDEVICE_OBJECT pDeviceObject; // device object for transport I/O
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ULONG LastError; // error code of last protocol error
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ULONG ReadErrorCount; // count of consecutive read errors
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ULONG ReadErrorThreshold; // max allowed consecutive read errors
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ULONG WriteErrorCount; // count of consecutive write errors
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ULONG WriteErrorThreshold; // max allowed consecutive write errors
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ULONG ZeroByteReadCount; // count of consecutive zero byte reads
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ULONG PortNumber; // network listen port number
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ULONG OutBufHeader; // number of reserved header bytes for this td
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ULONG OutBufTrailer; // number of reserved trailer bytes for this td
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ULONG OutBufLength; // length of input/output buffers
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LIST_ENTRY IoBusyOutBuf; // pointer to i/o busy outbufs
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KEVENT SyncWriteEvent; // event waited on by SyncWrite
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PKTHREAD pInputThread; // input thread pointer
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LONG InBufCount; // count of INBUFs to allocate
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KSPIN_LOCK InBufListLock; // spinlock to protect INBUF Busy/Done lists
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LIST_ENTRY InBufBusyHead; // list of busy INBUFs (waiting for input)
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LIST_ENTRY InBufDoneHead; // list of completed INBUFs (with input data)
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ULONG InBufHeader; // number of reserved header bytes for this td
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KEVENT InputEvent; // input event
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ULONG fClosing: 1; // stack driver is closing
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ULONG fCallbackInProgress: 1; // modem callback in progress
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ULONG fSyncWriteWaiter: 1; // there is a waiter in SyncWrite
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PVOID pPrivate; // pointer to private pd data
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PVOID pAfd; // pointer to private afd data
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LIST_ENTRY WorkItemHead; // preallocated workitem list.
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PDEVICE_OBJECT pSelfDeviceObject;// device object for this driver
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ULONG UserBrokenReason; // broken reason sent down from the user
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} TD, * PTD;
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