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/*++
Copyright (c) 1989, 1990, 1991 Microsoft Corporation
Module Name:
event.c
Abstract:
This module contains code which performs the following TDI services:
o TdiSetEventHandler
Author:
David Beaver (dbeaver) 1-July-1991
Environment:
Kernel mode
Revision History:
--*/
#include "precomp.h"
#pragma hdrstop
NTSTATUS
NbfTdiSetEventHandler(
IN PIRP Irp
)
/*++
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:
Irp - Pointer to the IRP for this request
Return Value:
NTSTATUS - status of operation.
--*/
{
NTSTATUS rc=STATUS_SUCCESS;
KIRQL oldirql;
PTDI_REQUEST_KERNEL_SET_EVENT parameters;
PIO_STACK_LOCATION irpSp;
PTP_ADDRESS address;
PTP_ADDRESS_FILE addressFile;
NTSTATUS status;
//
// Get the Address this is associated with; if there is none, get out.
//
irpSp = IoGetCurrentIrpStackLocation (Irp);
addressFile = irpSp->FileObject->FsContext;
status = NbfVerifyAddressObject (addressFile);
if (!NT_SUCCESS (status)) {
return status;
}
address = addressFile->Address;
ACQUIRE_SPIN_LOCK (&address->SpinLock, &oldirql);
parameters = (PTDI_REQUEST_KERNEL_SET_EVENT)&irpSp->Parameters;
switch (parameters->EventType) {
case TDI_EVENT_RECEIVE:
if (parameters->EventHandler == NULL) {
addressFile->ReceiveHandler =
(PTDI_IND_RECEIVE)TdiDefaultReceiveHandler;
addressFile->ReceiveHandlerContext = NULL;
addressFile->RegisteredReceiveHandler = FALSE;
} else {
addressFile->ReceiveHandler =
(PTDI_IND_RECEIVE)parameters->EventHandler;
addressFile->ReceiveHandlerContext = parameters->EventContext;
addressFile->RegisteredReceiveHandler = TRUE;
}
break;
case TDI_EVENT_RECEIVE_EXPEDITED:
if (parameters->EventHandler == NULL) {
addressFile->ExpeditedDataHandler =
(PTDI_IND_RECEIVE_EXPEDITED)TdiDefaultRcvExpeditedHandler;
addressFile->ExpeditedDataHandlerContext = NULL;
addressFile->RegisteredExpeditedDataHandler = FALSE;
} else {
addressFile->ExpeditedDataHandler =
(PTDI_IND_RECEIVE_EXPEDITED)parameters->EventHandler;
addressFile->ExpeditedDataHandlerContext = parameters->EventContext;
addressFile->RegisteredExpeditedDataHandler = TRUE;
}
break;
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;
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;
case TDI_EVENT_DISCONNECT:
if (parameters->EventHandler == NULL) {
addressFile->DisconnectHandler =
(PTDI_IND_DISCONNECT)TdiDefaultDisconnectHandler;
addressFile->DisconnectHandlerContext = NULL;
addressFile->RegisteredDisconnectHandler = FALSE;
} else {
addressFile->DisconnectHandler =
(PTDI_IND_DISCONNECT)parameters->EventHandler;
addressFile->DisconnectHandlerContext = parameters->EventContext;
addressFile->RegisteredDisconnectHandler = TRUE;
}
break;
case TDI_EVENT_CONNECT:
if (parameters->EventHandler == NULL) {
addressFile->ConnectionHandler =
(PTDI_IND_CONNECT)TdiDefaultConnectHandler;
addressFile->ConnectionHandlerContext = NULL;
addressFile->RegisteredConnectionHandler = FALSE;
} else {
addressFile->ConnectionHandler =
(PTDI_IND_CONNECT)parameters->EventHandler;
addressFile->ConnectionHandlerContext = parameters->EventContext;
addressFile->RegisteredConnectionHandler = TRUE;
}
break;
default:
rc = STATUS_INVALID_PARAMETER;
} /* switch */
RELEASE_SPIN_LOCK (&address->SpinLock, oldirql);
NbfDereferenceAddress ("Set event handler", address, AREF_VERIFY);
return rc;
} /* TdiSetEventHandler */
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