NTSTATUS
StSendConnect(
IN PTP_CONNECTION Connection
)
/*++
Routine Description:
This routine sends a CONNECT frame of the appropriate type given the
state of the specified connection.
Arguments:
Connection - Pointer to a transport connection object.
Return Value:
none.
--*/
{
NTSTATUS Status;
PDEVICE_CONTEXT DeviceContext;
PUCHAR SourceRouting;
UINT SourceRoutingLength;
UINT HeaderLength;
PSEND_PACKET_TAG SendTag;
PTP_PACKET Packet;
PST_HEADER StHeader;
DeviceContext = Connection->Provider;
//
// Allocate a packet from the pool.
//
Status = StCreatePacket (DeviceContext, &Packet);
if (!NT_SUCCESS (Status)) { // couldn't make frame.
return STATUS_INSUFFICIENT_RESOURCES;
}
SendTag = (PSEND_PACKET_TAG)(Packet->NdisPacket->ProtocolReserved);
SendTag->Type = TYPE_C_FRAME;
SendTag->Packet = Packet;
SendTag->Owner = (PVOID)Connection;
//
// Build the MAC header.
//
//
// CONNECT frames go out as
// single-route source routing.
//
MacReturnSingleRouteSR(
&DeviceContext->MacInfo,
&SourceRouting,
&SourceRoutingLength);
MacConstructHeader (
&DeviceContext->MacInfo,
Packet->Header,
DeviceContext->MulticastAddress.Address,
DeviceContext->LocalAddress.Address,
sizeof(ST_HEADER),
SourceRouting,
SourceRoutingLength,
&HeaderLength);
//
// Build the header: 'C', dest, source
//
StHeader = (PST_HEADER)(&Packet->Header[HeaderLength]);
StHeader->Signature = ST_SIGNATURE;
StHeader->Command = ST_CMD_CONNECT;
StHeader->Flags = 0;
RtlCopyMemory (StHeader->Destination, Connection->CalledAddress.NetbiosName, 16);
RtlCopyMemory (StHeader->Source, Connection->AddressFile->Address->NetworkName->NetbiosName, 16);
HeaderLength += sizeof(ST_HEADER);
//
// Modify the packet length and send the it.
//
StSetNdisPacketLength(Packet->NdisPacket, HeaderLength);
StNdisSend (Packet);
return STATUS_SUCCESS;
} /* StSendConnect */
VOID
NbfTdiRequestTimeoutHandler(
IN PKDPC Dpc,
IN PVOID DeferredContext,
IN PVOID SystemArgument1,
IN PVOID SystemArgument2
)
/*++
Routine Description:
This routine is executed as a DPC at DISPATCH_LEVEL when a request
such as TdiSend, TdiReceive, TdiSendDatagram, TdiReceiveDatagram, etc.,
encounters a timeout. This routine cleans up the activity and cancels it.
Arguments:
Dpc - Pointer to a system DPC object.
DeferredContext - Pointer to the TP_REQUEST block representing the
request that has timed out.
SystemArgument1 - Not used.
SystemArgument2 - Not used.
Return Value:
none.
--*/
{
KIRQL oldirql;
PTP_REQUEST Request;
PTP_CONNECTION Connection;
#if DBG
LARGE_INTEGER time, difference;
#endif
PIO_STACK_LOCATION IrpSp;
PTDI_REQUEST_KERNEL_QUERY_INFORMATION query;
PDEVICE_CONTEXT DeviceContext;
Dpc, SystemArgument1, SystemArgument2; // prevent compiler warnings
ENTER_NBF;
Request = (PTP_REQUEST)DeferredContext;
IF_NBFDBG (NBF_DEBUG_REQUEST) {
NbfPrint1 ("RequestTimeoutHandler: Entered, Request %lx\n", Request);
}
ACQUIRE_SPIN_LOCK (&Request->SpinLock, &oldirql);
Request->Flags &= ~REQUEST_FLAGS_TIMER;
if ((Request->Flags & REQUEST_FLAGS_STOPPING) == 0) {
#if DBG
KeQuerySystemTime (&time);
difference.QuadPart = time.QuadPart - (Request->Time).QuadPart;
NbfPrint1 ("RequestTimeoutHandler: Request timed out, queued for %ld seconds\n",
difference.LowPart / SECONDS);
#endif
//
// find reason for timeout
//
IrpSp = IoGetCurrentIrpStackLocation (Request->IoRequestPacket);
if (IrpSp->MajorFunction == IRP_MJ_INTERNAL_DEVICE_CONTROL) {
switch (IrpSp->MinorFunction) {
//
// none of these should time out.
//
case TDI_SEND:
case TDI_ACCEPT:
case TDI_SET_INFORMATION:
case TDI_SET_EVENT_HANDLER:
case TDI_SEND_DATAGRAM:
case TDI_RECEIVE_DATAGRAM:
case TDI_RECEIVE:
#if DBG
NbfPrint1 ("RequestTimeoutHandler: Request: %lx Timed out, and shouldn't have!\n",
Request);
#endif
ASSERT (FALSE);
RELEASE_SPIN_LOCK (&Request->SpinLock, oldirql);
NbfCompleteRequest (Request, STATUS_IO_TIMEOUT, 0);
break;
case TDI_LISTEN:
case TDI_CONNECT:
#if DBG
NbfPrint2 ("RequestTimeoutHandler: %s Failed, Request: %lx\n",
IrpSp->MinorFunction == TDI_LISTEN ?
"Listen" :
IrpSp->MinorFunction == TDI_CONNECT ?
"Connect" : "Disconnect",
Request);
#endif
Connection = (PTP_CONNECTION)(Request->Context);
RELEASE_SPIN_LOCK (&Request->SpinLock, oldirql);
//
// Since these requests are part of the connection
// itself, we just stop the connection and the
// request will get torn down then. If we get the
// situation where the request times out before
// it is queued to the connection, then the code
// that is about to queue it will check the STOPPING
// flag and complete it then.
//
// Don't stop the connection if an automatic connection
// is in progress.
//
#ifdef RASAUTODIAL
#if DBG
DbgPrint("RequestTimeoutHandler: AUTOCONNECTING=0x%x\n", Connection->Flags2 & CONNECTION_FLAGS2_AUTOCONNECTING);
#endif
if (!(Connection->Flags2 & CONNECTION_FLAGS2_AUTOCONNECTING))
NbfStopConnection (Connection, STATUS_IO_TIMEOUT);
break;
#endif
case TDI_DISCONNECT:
//
// We don't create requests for TDI_DISCONNECT any more.
//
ASSERT(FALSE);
break;
case TDI_QUERY_INFORMATION:
DeviceContext = (PDEVICE_CONTEXT)IrpSp->FileObject->DeviceObject;
query = (PTDI_REQUEST_KERNEL_QUERY_INFORMATION)&IrpSp->Parameters;
IF_NBFDBG (NBF_DEBUG_DEVCTX) {
NbfPrint1 ("RequestTimeout: %lx:\n", DeviceContext);
}
//
// Determine if the request is done, or if we should
// requeue it.
//
--Request->Retries;
if (Request->Retries > 0) {
RELEASE_SPIN_LOCK (&Request->SpinLock, oldirql);
//
// Send another packet out, and restart the timer.
//
if (query->QueryType == TDI_QUERY_FIND_NAME) {
NbfSendQueryFindName (
DeviceContext,
Request);
} else if (query->QueryType == TDI_QUERY_ADAPTER_STATUS) {
PUCHAR SingleSR;
UINT SingleSRLength;
//
// Send the STATUS_QUERY frames out as
// single-route source routing.
//
// On a second status query this should
// really be sent directed, but currently we
// don't record the address anywhere.
//
MacReturnSingleRouteSR(
&DeviceContext->MacInfo,
&SingleSR,
&SingleSRLength);
NbfSendStatusQuery (
DeviceContext,
Request,
&DeviceContext->NetBIOSAddress,
SingleSR,
SingleSRLength);
} else {
ASSERT (FALSE);
}
} else {
RELEASE_SPIN_LOCK (&Request->SpinLock, oldirql);
//
// That's it, we retried enough, complete it.
//
ACQUIRE_SPIN_LOCK (&DeviceContext->SpinLock,&oldirql);
RemoveEntryList (&Request->Linkage);
RELEASE_SPIN_LOCK (&DeviceContext->SpinLock, oldirql);
if (Request->BytesWritten > 0) {
NbfCompleteRequest (Request, STATUS_SUCCESS, Request->BytesWritten);
} else {
NbfCompleteRequest (Request, STATUS_IO_TIMEOUT, Request->BytesWritten);
}
}
break;
default:
#if DBG
NbfPrint2 ("RequestTimeoutHandler: Unknown Request Timed out, Request: %lx Type: %x\n",
Request, IrpSp->MinorFunction);
#endif
RELEASE_SPIN_LOCK (&Request->SpinLock, oldirql);
break;
} // end of switch
} else {
