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/*++
Copyright (c) 1989-1993 Microsoft Corporation
Module Name:
event.c
Abstract:
This module contains code which performs the following TDI services:
o TdiSetEventHandler
Environment:
Kernel mode
Revision History:
Sanjay Anand (SanjayAn) 3-Oct-1995
Changes to support transfer of buffer ownership to transports
1. Added a new event type - TDI_EVENT_CHAINED_RECEIVE_DATAGRAM
--*/
#include "precomp.h"
#pragma hdrstop
NTSTATUS
IpxTdiSetEventHandler(
IN PREQUEST Request
)
/*++
Routine Description:
This routine performs the TdiSetEventHandler request for the
transport provider. The caller (request dispatcher) verifies
that this routine will not be executed on behalf of a user-mode
client, as this request enables direct callouts at DISPATCH_LEVEL.
Arguments:
Request - Pointer to the request
Return Value:
NTSTATUS - status of operation.
--*/
{
NTSTATUS Status;
CTELockHandle LockHandle;
PTDI_REQUEST_KERNEL_SET_EVENT Parameters;
PADDRESS_FILE AddressFile;
//
// Get the Address this is associated with; if there is none, get out.
//
AddressFile = REQUEST_OPEN_CONTEXT(Request);
Status = IpxVerifyAddressFile (AddressFile);
if (!NT_SUCCESS (Status)) {
return Status;
}
CTEGetLock (&AddressFile->Address->Lock, &LockHandle);
Parameters = (PTDI_REQUEST_KERNEL_SET_EVENT)REQUEST_PARAMETERS(Request);
switch (Parameters->EventType) {
case TDI_EVENT_RECEIVE_DATAGRAM:
if (Parameters->EventHandler == NULL) {
AddressFile->ReceiveDatagramHandler =
(PTDI_IND_RECEIVE_DATAGRAM)TdiDefaultRcvDatagramHandler;
AddressFile->ReceiveDatagramHandlerContext = NULL;
AddressFile->RegisteredReceiveDatagramHandler = FALSE;
} else {
AddressFile->ReceiveDatagramHandler =
(PTDI_IND_RECEIVE_DATAGRAM)Parameters->EventHandler;
AddressFile->ReceiveDatagramHandlerContext = Parameters->EventContext;
AddressFile->RegisteredReceiveDatagramHandler = TRUE;
}
break;
//
// [SA] New event handler to receive chained buffers
//
case TDI_EVENT_CHAINED_RECEIVE_DATAGRAM:
if (Parameters->EventHandler == NULL) {
AddressFile->ChainedReceiveDatagramHandler =
(PTDI_IND_CHAINED_RECEIVE_DATAGRAM)TdiDefaultChainedRcvDatagramHandler;
AddressFile->ChainedReceiveDatagramHandlerContext = NULL;
AddressFile->RegisteredChainedReceiveDatagramHandler = FALSE;
} else {
AddressFile->ChainedReceiveDatagramHandler =
(PTDI_IND_CHAINED_RECEIVE_DATAGRAM)Parameters->EventHandler;
AddressFile->ChainedReceiveDatagramHandlerContext = Parameters->EventContext;
AddressFile->RegisteredChainedReceiveDatagramHandler = TRUE;
}
break;
case TDI_EVENT_ERROR:
if (Parameters->EventHandler == NULL) {
AddressFile->ErrorHandler =
(PTDI_IND_ERROR)TdiDefaultErrorHandler;
AddressFile->ErrorHandlerContext = NULL;
AddressFile->RegisteredErrorHandler = FALSE;
} else {
AddressFile->ErrorHandler =
(PTDI_IND_ERROR)Parameters->EventHandler;
AddressFile->ErrorHandlerContext = Parameters->EventContext;
AddressFile->RegisteredErrorHandler = TRUE;
}
break;
default:
Status = STATUS_INVALID_PARAMETER;
} /* switch */
CTEFreeLock (&AddressFile->Address->Lock, LockHandle);
IpxDereferenceAddressFile (AddressFile, AFREF_VERIFY);
REQUEST_INFORMATION(Request) = 0;
return Status;
} /* IpxTdiSetEventHandler */
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