NTSTATUS NTAPI ReceiveComplete
( PDEVICE_OBJECT DeviceObject,
PIRP Irp,
PVOID Context ) {
PAFD_FCB FCB = (PAFD_FCB)Context;
PLIST_ENTRY NextIrpEntry;
PIRP NextIrp;
PAFD_RECV_INFO RecvReq;
PIO_STACK_LOCATION NextIrpSp;
UNREFERENCED_PARAMETER(DeviceObject);
AFD_DbgPrint(MID_TRACE,("Called\n"));
if( !SocketAcquireStateLock( FCB ) )
return STATUS_FILE_CLOSED;
ASSERT(FCB->ReceiveIrp.InFlightRequest == Irp);
FCB->ReceiveIrp.InFlightRequest = NULL;
if( FCB->State == SOCKET_STATE_CLOSED ) {
/* Cleanup our IRP queue because the FCB is being destroyed */
while( !IsListEmpty( &FCB->PendingIrpList[FUNCTION_RECV] ) ) {
NextIrpEntry = RemoveHeadList(&FCB->PendingIrpList[FUNCTION_RECV]);
NextIrp = CONTAINING_RECORD(NextIrpEntry, IRP, Tail.Overlay.ListEntry);
NextIrpSp = IoGetCurrentIrpStackLocation(NextIrp);
RecvReq = GetLockedData(NextIrp, NextIrpSp);
NextIrp->IoStatus.Status = STATUS_FILE_CLOSED;
NextIrp->IoStatus.Information = 0;
UnlockBuffers(RecvReq->BufferArray, RecvReq->BufferCount, FALSE);
if( NextIrp->MdlAddress ) UnlockRequest( NextIrp, IoGetCurrentIrpStackLocation( NextIrp ) );
(void)IoSetCancelRoutine(NextIrp, NULL);
IoCompleteRequest( NextIrp, IO_NETWORK_INCREMENT );
}
SocketStateUnlock( FCB );
return STATUS_FILE_CLOSED;
} else if( FCB->State == SOCKET_STATE_LISTENING ) {
AFD_DbgPrint(MIN_TRACE,("!!! LISTENER GOT A RECEIVE COMPLETE !!!\n"));
SocketStateUnlock( FCB );
return STATUS_INVALID_PARAMETER;
}
HandleReceiveComplete( FCB, Irp->IoStatus.Status, Irp->IoStatus.Information );
ReceiveActivity( FCB, NULL );
SocketStateUnlock( FCB );
return STATUS_SUCCESS;
}
NTSTATUS NTAPI
PacketSocketRecvComplete(
PDEVICE_OBJECT DeviceObject,
PIRP Irp,
PVOID Context ) {
NTSTATUS Status = STATUS_SUCCESS;
PAFD_FCB FCB = Context;
PIRP NextIrp;
PIO_STACK_LOCATION NextIrpSp;
PLIST_ENTRY ListEntry;
PAFD_RECV_INFO RecvReq;
PAFD_STORED_DATAGRAM DatagramRecv;
UINT DGSize = Irp->IoStatus.Information + sizeof( AFD_STORED_DATAGRAM );
PLIST_ENTRY NextIrpEntry, DatagramRecvEntry;
UNREFERENCED_PARAMETER(DeviceObject);
AFD_DbgPrint(MID_TRACE,("Called on %p\n", FCB));
if( !SocketAcquireStateLock( FCB ) )
return STATUS_FILE_CLOSED;
ASSERT(FCB->ReceiveIrp.InFlightRequest == Irp);
FCB->ReceiveIrp.InFlightRequest = NULL;
if( FCB->State == SOCKET_STATE_CLOSED ) {
/* Cleanup our IRP queue because the FCB is being destroyed */
while( !IsListEmpty( &FCB->PendingIrpList[FUNCTION_RECV] ) ) {
NextIrpEntry = RemoveHeadList(&FCB->PendingIrpList[FUNCTION_RECV]);
NextIrp = CONTAINING_RECORD(NextIrpEntry, IRP, Tail.Overlay.ListEntry);
NextIrpSp = IoGetCurrentIrpStackLocation( NextIrp );
RecvReq = GetLockedData(NextIrp, NextIrpSp);
NextIrp->IoStatus.Status = STATUS_FILE_CLOSED;
NextIrp->IoStatus.Information = 0;
UnlockBuffers(RecvReq->BufferArray, RecvReq->BufferCount, CheckUnlockExtraBuffers(FCB, NextIrpSp));
if( NextIrp->MdlAddress ) UnlockRequest( NextIrp, IoGetCurrentIrpStackLocation( NextIrp ) );
(void)IoSetCancelRoutine(NextIrp, NULL);
IoCompleteRequest( NextIrp, IO_NETWORK_INCREMENT );
}
/* Free all items on the datagram list */
while( !IsListEmpty( &FCB->DatagramList ) ) {
DatagramRecvEntry = RemoveHeadList(&FCB->DatagramList);
DatagramRecv = CONTAINING_RECORD(DatagramRecvEntry, AFD_STORED_DATAGRAM, ListEntry);
ExFreePool( DatagramRecv->Address );
ExFreePool( DatagramRecv );
}
SocketStateUnlock( FCB );
return STATUS_FILE_CLOSED;
}
if (Irp->IoStatus.Status != STATUS_SUCCESS)
{
SocketStateUnlock(FCB);
return Irp->IoStatus.Status;
}
if (FCB->TdiReceiveClosed)
{
SocketStateUnlock(FCB);
return STATUS_FILE_CLOSED;
}
DatagramRecv = ExAllocatePool( NonPagedPool, DGSize );
if( DatagramRecv ) {
DatagramRecv->Len = Irp->IoStatus.Information;
RtlCopyMemory( DatagramRecv->Buffer, FCB->Recv.Window,
DatagramRecv->Len );
AFD_DbgPrint(MID_TRACE,("Received (A %p)\n",
FCB->AddressFrom->RemoteAddress));
DatagramRecv->Address =
TaCopyTransportAddress( FCB->AddressFrom->RemoteAddress );
if( !DatagramRecv->Address ) Status = STATUS_NO_MEMORY;
} else Status = STATUS_NO_MEMORY;
if( !NT_SUCCESS( Status ) ) {
if( DatagramRecv ) ExFreePool( DatagramRecv );
SocketStateUnlock( FCB );
return Status;
} else {
FCB->Recv.Content += DatagramRecv->Len;
InsertTailList( &FCB->DatagramList, &DatagramRecv->ListEntry );
}
/* Satisfy as many requests as we can */
while( !IsListEmpty( &FCB->DatagramList ) &&
!IsListEmpty( &FCB->PendingIrpList[FUNCTION_RECV] ) ) {
AFD_DbgPrint(MID_TRACE,("Looping trying to satisfy request\n"));
ListEntry = RemoveHeadList( &FCB->DatagramList );
DatagramRecv = CONTAINING_RECORD( ListEntry, AFD_STORED_DATAGRAM,
ListEntry );
ListEntry = RemoveHeadList( &FCB->PendingIrpList[FUNCTION_RECV] );
NextIrp = CONTAINING_RECORD( ListEntry, IRP, Tail.Overlay.ListEntry );
NextIrpSp = IoGetCurrentIrpStackLocation( NextIrp );
RecvReq = GetLockedData(NextIrp, NextIrpSp);
AFD_DbgPrint(MID_TRACE,("RecvReq: %p, DatagramRecv: %p\n",
RecvReq, DatagramRecv));
AFD_DbgPrint(MID_TRACE,("Satisfying\n"));
Status = SatisfyPacketRecvRequest
( FCB, NextIrp, DatagramRecv,
(PUINT)&NextIrp->IoStatus.Information );
if (RecvReq->TdiFlags & TDI_RECEIVE_PEEK)
{
InsertHeadList(&FCB->DatagramList,
&DatagramRecv->ListEntry);
}
AFD_DbgPrint(MID_TRACE,("Unlocking\n"));
UnlockBuffers( RecvReq->BufferArray, RecvReq->BufferCount, CheckUnlockExtraBuffers(FCB, NextIrpSp) );
if ( NextIrp->MdlAddress ) UnlockRequest( NextIrp, IoGetCurrentIrpStackLocation( NextIrp ) );
AFD_DbgPrint(MID_TRACE,("Completing\n"));
(void)IoSetCancelRoutine(NextIrp, NULL);
NextIrp->IoStatus.Status = Status;
IoCompleteRequest( NextIrp, IO_NETWORK_INCREMENT );
}
if( !IsListEmpty( &FCB->DatagramList ) && IsListEmpty(&FCB->PendingIrpList[FUNCTION_RECV]) ) {
AFD_DbgPrint(MID_TRACE,("Signalling\n"));
FCB->PollState |= AFD_EVENT_RECEIVE;
FCB->PollStatus[FD_READ_BIT] = STATUS_SUCCESS;
PollReeval( FCB->DeviceExt, FCB->FileObject );
} else
FCB->PollState &= ~AFD_EVENT_RECEIVE;
if( NT_SUCCESS(Irp->IoStatus.Status) ) {
/* Now relaunch the datagram request */
Status = TdiReceiveDatagram
( &FCB->ReceiveIrp.InFlightRequest,
FCB->AddressFile.Object,
0,
FCB->Recv.Window,
FCB->Recv.Size,
FCB->AddressFrom,
&FCB->ReceiveIrp.Iosb,
PacketSocketRecvComplete,
FCB );
}
SocketStateUnlock( FCB );
return STATUS_SUCCESS;
}
static NTSTATUS NTAPI
SatisfyPacketRecvRequest( PAFD_FCB FCB, PIRP Irp,
PAFD_STORED_DATAGRAM DatagramRecv,
PUINT TotalBytesCopied ) {
NTSTATUS Status = STATUS_SUCCESS;
PIO_STACK_LOCATION IrpSp = IoGetCurrentIrpStackLocation( Irp );
PAFD_RECV_INFO RecvReq =
GetLockedData(Irp, IrpSp);
UINT BytesToCopy = 0, BytesAvailable = DatagramRecv->Len, AddrLen = 0;
PAFD_MAPBUF Map;
BOOLEAN ExtraBuffers = CheckUnlockExtraBuffers(FCB, IrpSp);
Map = (PAFD_MAPBUF)(RecvReq->BufferArray +
RecvReq->BufferCount +
(ExtraBuffers ? EXTRA_LOCK_BUFFERS : 0));
BytesToCopy = MIN( RecvReq->BufferArray[0].len, BytesAvailable );
AFD_DbgPrint(MID_TRACE,("BytesToCopy: %u len %u\n", BytesToCopy,
RecvReq->BufferArray[0].len));
if( Map[0].Mdl ) {
/* Copy the address */
if( ExtraBuffers && Map[1].Mdl && Map[2].Mdl ) {
AFD_DbgPrint(MID_TRACE,("Checking TAAddressCount\n"));
if( DatagramRecv->Address->TAAddressCount != 1 ) {
AFD_DbgPrint
(MIN_TRACE,
("Wierd address count %d\n",
DatagramRecv->Address->TAAddressCount));
}
AFD_DbgPrint(MID_TRACE,("Computing addr len\n"));
AddrLen = MIN(DatagramRecv->Address->Address->AddressLength +
sizeof(USHORT),
RecvReq->BufferArray[1].len);
AFD_DbgPrint(MID_TRACE,("Copying %u bytes of address\n", AddrLen));
Map[1].BufferAddress = MmMapLockedPages( Map[1].Mdl, KernelMode );
AFD_DbgPrint(MID_TRACE,("Done mapping, copying address\n"));
RtlCopyMemory( Map[1].BufferAddress,
&DatagramRecv->Address->Address->AddressType,
AddrLen );
MmUnmapLockedPages( Map[1].BufferAddress, Map[1].Mdl );
AFD_DbgPrint(MID_TRACE,("Copying address len\n"));
Map[2].BufferAddress = MmMapLockedPages( Map[2].Mdl, KernelMode );
*((PINT)Map[2].BufferAddress) = AddrLen;
MmUnmapLockedPages( Map[2].BufferAddress, Map[2].Mdl );
}
AFD_DbgPrint(MID_TRACE,("Mapping data buffer pages\n"));
Map[0].BufferAddress = MmMapLockedPages( Map[0].Mdl, KernelMode );
AFD_DbgPrint(MID_TRACE,("Buffer %d: %p:%u\n",
0,
Map[0].BufferAddress,
BytesToCopy));
RtlCopyMemory( Map[0].BufferAddress,
DatagramRecv->Buffer,
BytesToCopy );
MmUnmapLockedPages( Map[0].BufferAddress, Map[0].Mdl );
*TotalBytesCopied = BytesToCopy;
}
if (*TotalBytesCopied == DatagramRecv->Len)
{
/* We copied the whole datagram */
Status = Irp->IoStatus.Status = STATUS_SUCCESS;
}
else
{
/* We only copied part of the datagram */
Status = Irp->IoStatus.Status = STATUS_BUFFER_OVERFLOW;
}
Irp->IoStatus.Information = *TotalBytesCopied;
if (!(RecvReq->TdiFlags & TDI_RECEIVE_PEEK))
{
FCB->Recv.Content -= DatagramRecv->Len;
ExFreePool( DatagramRecv->Address );
ExFreePool( DatagramRecv );
}
AFD_DbgPrint(MID_TRACE,("Done\n"));
return Status;
}
static NTSTATUS ReceiveActivity( PAFD_FCB FCB, PIRP Irp ) {
PLIST_ENTRY NextIrpEntry;
PIRP NextIrp;
PIO_STACK_LOCATION NextIrpSp;
PAFD_RECV_INFO RecvReq;
UINT TotalBytesCopied = 0, RetBytesCopied = 0;
NTSTATUS Status = STATUS_SUCCESS, RetStatus = STATUS_PENDING;
AFD_DbgPrint(MID_TRACE,("%p %p\n", FCB, Irp));
AFD_DbgPrint(MID_TRACE,("FCB %p Receive data waiting %u\n",
FCB, FCB->Recv.Content));
if( CantReadMore( FCB ) ) {
/* Success here means that we got an EOF. Complete a pending read
* with zero bytes if we haven't yet overread, then kill the others.
*/
while( !IsListEmpty( &FCB->PendingIrpList[FUNCTION_RECV] ) ) {
NextIrpEntry = RemoveHeadList(&FCB->PendingIrpList[FUNCTION_RECV]);
NextIrp = CONTAINING_RECORD(NextIrpEntry, IRP, Tail.Overlay.ListEntry);
NextIrpSp = IoGetCurrentIrpStackLocation( NextIrp );
RecvReq = GetLockedData(NextIrp, NextIrpSp);
AFD_DbgPrint(MID_TRACE,("Completing recv %p (%u)\n", NextIrp,
TotalBytesCopied));
UnlockBuffers( RecvReq->BufferArray,
RecvReq->BufferCount, FALSE );
if (FCB->Overread && FCB->LastReceiveStatus == STATUS_SUCCESS)
{
/* Overread after a graceful disconnect so complete with an error */
Status = STATUS_FILE_CLOSED;
}
else
{
/* Unexpected disconnect by the remote host or initial read after a graceful disconnnect */
Status = FCB->LastReceiveStatus;
}
NextIrp->IoStatus.Status = Status;
NextIrp->IoStatus.Information = 0;
if( NextIrp == Irp ) RetStatus = Status;
if( NextIrp->MdlAddress ) UnlockRequest( NextIrp, IoGetCurrentIrpStackLocation( NextIrp ) );
(void)IoSetCancelRoutine(NextIrp, NULL);
IoCompleteRequest( NextIrp, IO_NETWORK_INCREMENT );
FCB->Overread = TRUE;
}
} else {
/* Kick the user that receive would be possible now */
/* XXX Not implemented yet */
AFD_DbgPrint(MID_TRACE,("FCB %p Receive data waiting %u\n",
FCB, FCB->Recv.Content));
/*OskitDumpBuffer( FCB->Recv.Window, FCB->Recv.Content );*/
/* Try to clear some requests */
while( !IsListEmpty( &FCB->PendingIrpList[FUNCTION_RECV] ) ) {
NextIrpEntry = RemoveHeadList(&FCB->PendingIrpList[FUNCTION_RECV]);
NextIrp = CONTAINING_RECORD(NextIrpEntry, IRP, Tail.Overlay.ListEntry);
NextIrpSp = IoGetCurrentIrpStackLocation( NextIrp );
RecvReq = GetLockedData(NextIrp, NextIrpSp);
AFD_DbgPrint(MID_TRACE,("RecvReq @ %p\n", RecvReq));
Status = TryToSatisfyRecvRequestFromBuffer
( FCB, RecvReq, &TotalBytesCopied );
if( Status == STATUS_PENDING ) {
AFD_DbgPrint(MID_TRACE,("Ran out of data for %p\n", NextIrp));
InsertHeadList(&FCB->PendingIrpList[FUNCTION_RECV],
&NextIrp->Tail.Overlay.ListEntry);
break;
} else {
AFD_DbgPrint(MID_TRACE,("Completing recv %p (%u)\n", NextIrp,
TotalBytesCopied));
UnlockBuffers( RecvReq->BufferArray,
RecvReq->BufferCount, FALSE );
NextIrp->IoStatus.Status = Status;
NextIrp->IoStatus.Information = TotalBytesCopied;
if( NextIrp == Irp ) {
RetStatus = Status;
RetBytesCopied = TotalBytesCopied;
}
if( NextIrp->MdlAddress ) UnlockRequest( NextIrp, IoGetCurrentIrpStackLocation( NextIrp ) );
(void)IoSetCancelRoutine(NextIrp, NULL);
IoCompleteRequest( NextIrp, IO_NETWORK_INCREMENT );
}
}
}
if( FCB->Recv.Content - FCB->Recv.BytesUsed &&
IsListEmpty(&FCB->PendingIrpList[FUNCTION_RECV]) ) {
FCB->PollState |= AFD_EVENT_RECEIVE;
FCB->PollStatus[FD_READ_BIT] = STATUS_SUCCESS;
PollReeval( FCB->DeviceExt, FCB->FileObject );
}
else
{
FCB->PollState &= ~AFD_EVENT_RECEIVE;
}
/* Signal FD_CLOSE if no buffered data remains and the socket can't receive any more */
if (CantReadMore(FCB))
{
if (FCB->LastReceiveStatus == STATUS_SUCCESS)
{
FCB->PollState |= AFD_EVENT_DISCONNECT;
}
else
{
FCB->PollState |= AFD_EVENT_CLOSE;
}
FCB->PollStatus[FD_CLOSE_BIT] = FCB->LastReceiveStatus;
PollReeval(FCB->DeviceExt, FCB->FileObject);
}
AFD_DbgPrint(MID_TRACE,("RetStatus for irp %p is %x\n", Irp, RetStatus));
/* Sometimes we're called with a NULL Irp */
if( Irp ) {
Irp->IoStatus.Status = RetStatus;
Irp->IoStatus.Information = RetBytesCopied;
}
return RetStatus;
}
static NTSTATUS NTAPI PacketSocketSendComplete
( PDEVICE_OBJECT DeviceObject,
PIRP Irp,
PVOID Context ) {
PAFD_FCB FCB = (PAFD_FCB)Context;
PLIST_ENTRY NextIrpEntry;
PIRP NextIrp;
PAFD_SEND_INFO SendReq;
UNREFERENCED_PARAMETER(DeviceObject);
AFD_DbgPrint(MID_TRACE,("Called, status %x, %u bytes used\n",
Irp->IoStatus.Status,
Irp->IoStatus.Information));
if( !SocketAcquireStateLock( FCB ) )
return STATUS_FILE_CLOSED;
ASSERT(FCB->SendIrp.InFlightRequest == Irp);
FCB->SendIrp.InFlightRequest = NULL;
/* Request is not in flight any longer */
if( FCB->State == SOCKET_STATE_CLOSED ) {
/* Cleanup our IRP queue because the FCB is being destroyed */
while( !IsListEmpty( &FCB->PendingIrpList[FUNCTION_SEND] ) ) {
NextIrpEntry = RemoveHeadList(&FCB->PendingIrpList[FUNCTION_SEND]);
NextIrp = CONTAINING_RECORD(NextIrpEntry, IRP, Tail.Overlay.ListEntry);
SendReq = GetLockedData(NextIrp, IoGetCurrentIrpStackLocation(NextIrp));
NextIrp->IoStatus.Status = STATUS_FILE_CLOSED;
NextIrp->IoStatus.Information = 0;
(void)IoSetCancelRoutine(NextIrp, NULL);
UnlockBuffers(SendReq->BufferArray, SendReq->BufferCount, FALSE);
UnlockRequest( NextIrp, IoGetCurrentIrpStackLocation( NextIrp ) );
IoCompleteRequest( NextIrp, IO_NETWORK_INCREMENT );
}
SocketStateUnlock( FCB );
return STATUS_FILE_CLOSED;
}
ASSERT(!IsListEmpty(&FCB->PendingIrpList[FUNCTION_SEND]));
/* TDI spec guarantees FIFO ordering on IRPs */
NextIrpEntry = RemoveHeadList(&FCB->PendingIrpList[FUNCTION_SEND]);
NextIrp = CONTAINING_RECORD(NextIrpEntry, IRP, Tail.Overlay.ListEntry);
SendReq = GetLockedData(NextIrp, IoGetCurrentIrpStackLocation(NextIrp));
NextIrp->IoStatus.Status = Irp->IoStatus.Status;
NextIrp->IoStatus.Information = Irp->IoStatus.Information;
(void)IoSetCancelRoutine(NextIrp, NULL);
UnlockBuffers(SendReq->BufferArray, SendReq->BufferCount, FALSE);
UnlockRequest(NextIrp, IoGetCurrentIrpStackLocation(NextIrp));
IoCompleteRequest(NextIrp, IO_NETWORK_INCREMENT);
FCB->PollState |= AFD_EVENT_SEND;
FCB->PollStatus[FD_WRITE_BIT] = STATUS_SUCCESS;
PollReeval(FCB->DeviceExt, FCB->FileObject);
SocketStateUnlock(FCB);
return STATUS_SUCCESS;
}
static NTSTATUS NTAPI SendComplete
( PDEVICE_OBJECT DeviceObject,
PIRP Irp,
PVOID Context ) {
NTSTATUS Status = Irp->IoStatus.Status;
PAFD_FCB FCB = (PAFD_FCB)Context;
PLIST_ENTRY NextIrpEntry;
PIRP NextIrp = NULL;
PIO_STACK_LOCATION NextIrpSp;
PAFD_SEND_INFO SendReq = NULL;
PAFD_MAPBUF Map;
UINT TotalBytesCopied = 0, TotalBytesProcessed = 0, SpaceAvail, i;
UINT SendLength, BytesCopied;
BOOLEAN HaltSendQueue;
UNREFERENCED_PARAMETER(DeviceObject);
/*
* The Irp parameter passed in is the IRP of the stream between AFD and
* TDI driver. It's not very usefull to us. We need the IRPs of the stream
* between usermode and AFD. Those are chained from
* FCB->PendingIrpList[FUNCTION_SEND] and you'll see them in the code
* below as "NextIrp" ('cause they are the next usermode IRP to be
* processed).
*/
AFD_DbgPrint(MID_TRACE,("Called, status %x, %u bytes used\n",
Irp->IoStatus.Status,
Irp->IoStatus.Information));
if( !SocketAcquireStateLock( FCB ) )
return STATUS_FILE_CLOSED;
ASSERT(FCB->SendIrp.InFlightRequest == Irp);
FCB->SendIrp.InFlightRequest = NULL;
/* Request is not in flight any longer */
if( FCB->State == SOCKET_STATE_CLOSED ) {
/* Cleanup our IRP queue because the FCB is being destroyed */
while( !IsListEmpty( &FCB->PendingIrpList[FUNCTION_SEND] ) ) {
NextIrpEntry = RemoveHeadList(&FCB->PendingIrpList[FUNCTION_SEND]);
NextIrp = CONTAINING_RECORD(NextIrpEntry, IRP, Tail.Overlay.ListEntry);
NextIrpSp = IoGetCurrentIrpStackLocation( NextIrp );
SendReq = GetLockedData(NextIrp, NextIrpSp);
NextIrp->IoStatus.Status = STATUS_FILE_CLOSED;
NextIrp->IoStatus.Information = 0;
UnlockBuffers(SendReq->BufferArray, SendReq->BufferCount, FALSE);
if( NextIrp->MdlAddress ) UnlockRequest( NextIrp, IoGetCurrentIrpStackLocation( NextIrp ) );
(void)IoSetCancelRoutine(NextIrp, NULL);
IoCompleteRequest( NextIrp, IO_NETWORK_INCREMENT );
}
RetryDisconnectCompletion(FCB);
SocketStateUnlock( FCB );
return STATUS_FILE_CLOSED;
}
if( !NT_SUCCESS(Status) ) {
/* Complete all following send IRPs with error */
while( !IsListEmpty( &FCB->PendingIrpList[FUNCTION_SEND] ) ) {
NextIrpEntry =
RemoveHeadList(&FCB->PendingIrpList[FUNCTION_SEND]);
NextIrp =
CONTAINING_RECORD(NextIrpEntry, IRP, Tail.Overlay.ListEntry);
NextIrpSp = IoGetCurrentIrpStackLocation( NextIrp );
SendReq = GetLockedData(NextIrp, NextIrpSp);
UnlockBuffers( SendReq->BufferArray,
SendReq->BufferCount,
FALSE );
NextIrp->IoStatus.Status = Status;
NextIrp->IoStatus.Information = 0;
if ( NextIrp->MdlAddress ) UnlockRequest( NextIrp, IoGetCurrentIrpStackLocation( NextIrp ) );
(void)IoSetCancelRoutine(NextIrp, NULL);
IoCompleteRequest( NextIrp, IO_NETWORK_INCREMENT );
}
RetryDisconnectCompletion(FCB);
SocketStateUnlock( FCB );
return STATUS_SUCCESS;
}
RtlMoveMemory( FCB->Send.Window,
FCB->Send.Window + Irp->IoStatus.Information,
FCB->Send.BytesUsed - Irp->IoStatus.Information );
TotalBytesProcessed = 0;
SendLength = Irp->IoStatus.Information;
HaltSendQueue = FALSE;
while (!IsListEmpty(&FCB->PendingIrpList[FUNCTION_SEND]) && SendLength > 0) {
NextIrpEntry = RemoveHeadList(&FCB->PendingIrpList[FUNCTION_SEND]);
NextIrp = CONTAINING_RECORD(NextIrpEntry, IRP, Tail.Overlay.ListEntry);
NextIrpSp = IoGetCurrentIrpStackLocation( NextIrp );
SendReq = GetLockedData(NextIrp, NextIrpSp);
Map = (PAFD_MAPBUF)(SendReq->BufferArray + SendReq->BufferCount);
TotalBytesCopied = (ULONG_PTR)NextIrp->Tail.Overlay.DriverContext[3];
ASSERT(TotalBytesCopied != 0);
/* If we didn't get enough, keep waiting */
if (TotalBytesCopied > SendLength)
{
/* Update the bytes left to copy */
TotalBytesCopied -= SendLength;
NextIrp->Tail.Overlay.DriverContext[3] = (PVOID)TotalBytesCopied;
/* Update the state variables */
FCB->Send.BytesUsed -= SendLength;
TotalBytesProcessed += SendLength;
SendLength = 0;
/* Pend the IRP */
InsertHeadList(&FCB->PendingIrpList[FUNCTION_SEND],
&NextIrp->Tail.Overlay.ListEntry);
HaltSendQueue = TRUE;
break;
}
ASSERT(NextIrp->IoStatus.Information != 0);
NextIrp->IoStatus.Status = Irp->IoStatus.Status;
FCB->Send.BytesUsed -= TotalBytesCopied;
TotalBytesProcessed += TotalBytesCopied;
SendLength -= TotalBytesCopied;
(void)IoSetCancelRoutine(NextIrp, NULL);
UnlockBuffers( SendReq->BufferArray,
SendReq->BufferCount,
FALSE );
if (NextIrp->MdlAddress) UnlockRequest(NextIrp, NextIrpSp);
IoCompleteRequest(NextIrp, IO_NETWORK_INCREMENT);
}
ASSERT(SendLength == 0);
if ( !HaltSendQueue && !IsListEmpty( &FCB->PendingIrpList[FUNCTION_SEND] ) ) {
NextIrpEntry = FCB->PendingIrpList[FUNCTION_SEND].Flink;
NextIrp = CONTAINING_RECORD(NextIrpEntry, IRP, Tail.Overlay.ListEntry);
NextIrpSp = IoGetCurrentIrpStackLocation( NextIrp );
SendReq = GetLockedData(NextIrp, NextIrpSp);
Map = (PAFD_MAPBUF)(SendReq->BufferArray + SendReq->BufferCount);
AFD_DbgPrint(MID_TRACE,("SendReq @ %p\n", SendReq));
SpaceAvail = FCB->Send.Size - FCB->Send.BytesUsed;
TotalBytesCopied = 0;
/* Count the total transfer size */
SendLength = 0;
for (i = 0; i < SendReq->BufferCount; i++)
{
SendLength += SendReq->BufferArray[i].len;
}
/* Make sure we've got the space */
if (SendLength > SpaceAvail)
{
/* Blocking sockets have to wait here */
if (SendLength <= FCB->Send.Size && !((SendReq->AfdFlags & AFD_IMMEDIATE) || (FCB->NonBlocking)))
{
FCB->PollState &= ~AFD_EVENT_SEND;
NextIrp = NULL;
}
/* Check if we can send anything */
if (SpaceAvail == 0)
{
FCB->PollState &= ~AFD_EVENT_SEND;
/* We should never be non-overlapped and get to this point */
ASSERT(SendReq->AfdFlags & AFD_OVERLAPPED);
NextIrp = NULL;
}
}
if (NextIrp != NULL)
{
for( i = 0; i < SendReq->BufferCount; i++ ) {
BytesCopied = MIN(SendReq->BufferArray[i].len, SpaceAvail);
Map[i].BufferAddress =
MmMapLockedPages( Map[i].Mdl, KernelMode );
RtlCopyMemory( FCB->Send.Window + FCB->Send.BytesUsed,
Map[i].BufferAddress,
BytesCopied );
MmUnmapLockedPages( Map[i].BufferAddress, Map[i].Mdl );
TotalBytesCopied += BytesCopied;
SpaceAvail -= BytesCopied;
FCB->Send.BytesUsed += BytesCopied;
}
NextIrp->IoStatus.Information = TotalBytesCopied;
NextIrp->Tail.Overlay.DriverContext[3] = (PVOID)NextIrp->IoStatus.Information;
}
}
if (FCB->Send.Size - FCB->Send.BytesUsed != 0 && !FCB->SendClosed &&
IsListEmpty(&FCB->PendingIrpList[FUNCTION_SEND]))
{
FCB->PollState |= AFD_EVENT_SEND;
FCB->PollStatus[FD_WRITE_BIT] = STATUS_SUCCESS;
PollReeval( FCB->DeviceExt, FCB->FileObject );
}
else
{
FCB->PollState &= ~AFD_EVENT_SEND;
}
/* Some data is still waiting */
if( FCB->Send.BytesUsed )
{
Status = TdiSend( &FCB->SendIrp.InFlightRequest,
FCB->Connection.Object,
0,
FCB->Send.Window,
FCB->Send.BytesUsed,
SendComplete,
FCB );
}
else
{
/* Nothing is waiting so try to complete a pending disconnect */
RetryDisconnectCompletion(FCB);
}
SocketStateUnlock( FCB );
return STATUS_SUCCESS;
}
static NTSTATUS NTAPI SendComplete
( PDEVICE_OBJECT DeviceObject,
PIRP Irp,
PVOID Context ) {
NTSTATUS Status = Irp->IoStatus.Status;
PAFD_FCB FCB = (PAFD_FCB)Context;
PLIST_ENTRY NextIrpEntry;
PIRP NextIrp = NULL;
PIO_STACK_LOCATION NextIrpSp;
PAFD_SEND_INFO SendReq = NULL;
PAFD_MAPBUF Map;
UINT TotalBytesCopied = 0, TotalBytesProcessed = 0, SpaceAvail, i;
/*
* The Irp parameter passed in is the IRP of the stream between AFD and
* TDI driver. It's not very usefull to us. We need the IRPs of the stream
* between usermode and AFD. Those are chained from
* FCB->PendingIrpList[FUNCTION_SEND] and you'll see them in the code
* below as "NextIrp" ('cause they are the next usermode IRP to be
* processed).
*/
AFD_DbgPrint(MID_TRACE,("Called, status %x, %d bytes used\n",
Irp->IoStatus.Status,
Irp->IoStatus.Information));
if( !SocketAcquireStateLock( FCB ) )
return STATUS_FILE_CLOSED;
ASSERT(FCB->SendIrp.InFlightRequest == Irp);
FCB->SendIrp.InFlightRequest = NULL;
/* Request is not in flight any longer */
if( FCB->State == SOCKET_STATE_CLOSED ) {
/* Cleanup our IRP queue because the FCB is being destroyed */
while( !IsListEmpty( &FCB->PendingIrpList[FUNCTION_SEND] ) ) {
NextIrpEntry = RemoveHeadList(&FCB->PendingIrpList[FUNCTION_SEND]);
NextIrp = CONTAINING_RECORD(NextIrpEntry, IRP, Tail.Overlay.ListEntry);
NextIrpSp = IoGetCurrentIrpStackLocation( NextIrp );
SendReq = GetLockedData(NextIrp, NextIrpSp);
NextIrp->IoStatus.Status = STATUS_FILE_CLOSED;
NextIrp->IoStatus.Information = 0;
UnlockBuffers(SendReq->BufferArray, SendReq->BufferCount, FALSE);
if( NextIrp->MdlAddress ) UnlockRequest( NextIrp, IoGetCurrentIrpStackLocation( NextIrp ) );
(void)IoSetCancelRoutine(NextIrp, NULL);
IoCompleteRequest( NextIrp, IO_NETWORK_INCREMENT );
}
RetryDisconnectCompletion(FCB);
SocketStateUnlock( FCB );
return STATUS_FILE_CLOSED;
}
if( !NT_SUCCESS(Status) ) {
/* Complete all following send IRPs with error */
while( !IsListEmpty( &FCB->PendingIrpList[FUNCTION_SEND] ) ) {
NextIrpEntry =
RemoveHeadList(&FCB->PendingIrpList[FUNCTION_SEND]);
NextIrp =
CONTAINING_RECORD(NextIrpEntry, IRP, Tail.Overlay.ListEntry);
NextIrpSp = IoGetCurrentIrpStackLocation( NextIrp );
SendReq = GetLockedData(NextIrp, NextIrpSp);
UnlockBuffers( SendReq->BufferArray,
SendReq->BufferCount,
FALSE );
NextIrp->IoStatus.Status = Status;
NextIrp->IoStatus.Information = 0;
if ( NextIrp->MdlAddress ) UnlockRequest( NextIrp, IoGetCurrentIrpStackLocation( NextIrp ) );
(void)IoSetCancelRoutine(NextIrp, NULL);
IoCompleteRequest( NextIrp, IO_NETWORK_INCREMENT );
}
RetryDisconnectCompletion(FCB);
SocketStateUnlock( FCB );
return STATUS_SUCCESS;
}
RtlMoveMemory( FCB->Send.Window,
FCB->Send.Window + FCB->Send.BytesUsed,
FCB->Send.BytesUsed - Irp->IoStatus.Information );
TotalBytesProcessed = 0;
while (!IsListEmpty(&FCB->PendingIrpList[FUNCTION_SEND]) &&
TotalBytesProcessed != Irp->IoStatus.Information) {
NextIrpEntry =
RemoveHeadList(&FCB->PendingIrpList[FUNCTION_SEND]);
NextIrp =
CONTAINING_RECORD(NextIrpEntry, IRP, Tail.Overlay.ListEntry);
NextIrpSp = IoGetCurrentIrpStackLocation( NextIrp );
SendReq = GetLockedData(NextIrp, NextIrpSp);
Map = (PAFD_MAPBUF)(SendReq->BufferArray + SendReq->BufferCount);
TotalBytesCopied = 0;
for( i = 0; i < SendReq->BufferCount; i++ )
TotalBytesCopied += SendReq->BufferArray[i].len;
NextIrp->IoStatus.Status = Irp->IoStatus.Status;
NextIrp->IoStatus.Information = TotalBytesCopied;
TotalBytesProcessed += TotalBytesCopied;
(void)IoSetCancelRoutine(NextIrp, NULL);
UnlockBuffers( SendReq->BufferArray,
SendReq->BufferCount,
FALSE );
if (NextIrp->MdlAddress) UnlockRequest(NextIrp, NextIrpSp);
IoCompleteRequest(NextIrp, IO_NETWORK_INCREMENT);
}
ASSERT(TotalBytesProcessed == Irp->IoStatus.Information);
FCB->Send.BytesUsed -= TotalBytesProcessed;
while( !IsListEmpty( &FCB->PendingIrpList[FUNCTION_SEND] ) ) {
NextIrpEntry =
RemoveHeadList(&FCB->PendingIrpList[FUNCTION_SEND]);
NextIrp =
CONTAINING_RECORD(NextIrpEntry, IRP, Tail.Overlay.ListEntry);
NextIrpSp = IoGetCurrentIrpStackLocation( NextIrp );
SendReq = GetLockedData(NextIrp, NextIrpSp);
Map = (PAFD_MAPBUF)(SendReq->BufferArray + SendReq->BufferCount);
AFD_DbgPrint(MID_TRACE,("SendReq @ %x\n", SendReq));
SpaceAvail = FCB->Send.Size - FCB->Send.BytesUsed;
TotalBytesCopied = 0;
for( i = 0; i < SendReq->BufferCount; i++ ) {
if (SpaceAvail < SendReq->BufferArray[i].len)
{
InsertHeadList(&FCB->PendingIrpList[FUNCTION_SEND],
&NextIrp->Tail.Overlay.ListEntry);
NextIrp = NULL;
break;
}
Map[i].BufferAddress =
MmMapLockedPages( Map[i].Mdl, KernelMode );
RtlCopyMemory( FCB->Send.Window + FCB->Send.BytesUsed,
Map[i].BufferAddress,
SendReq->BufferArray[i].len );
MmUnmapLockedPages( Map[i].BufferAddress, Map[i].Mdl );
TotalBytesCopied += SendReq->BufferArray[i].len;
SpaceAvail -= SendReq->BufferArray[i].len;
}
if (NextIrp != NULL)
{
FCB->Send.BytesUsed += TotalBytesCopied;
}
else
break;
}
if (FCB->Send.Size - FCB->Send.BytesUsed != 0 &&
!FCB->SendClosed)
{
FCB->PollState |= AFD_EVENT_SEND;
FCB->PollStatus[FD_WRITE_BIT] = STATUS_SUCCESS;
PollReeval( FCB->DeviceExt, FCB->FileObject );
}
else
{
FCB->PollState &= ~AFD_EVENT_SEND;
}
/* Some data is still waiting */
if( FCB->Send.BytesUsed )
{
Status = TdiSend( &FCB->SendIrp.InFlightRequest,
FCB->Connection.Object,
0,
FCB->Send.Window,
FCB->Send.BytesUsed,
&FCB->SendIrp.Iosb,
SendComplete,
FCB );
}
else
{
/* Nothing is waiting so try to complete a pending disconnect */
RetryDisconnectCompletion(FCB);
}
SocketStateUnlock( FCB );
return STATUS_SUCCESS;
}
