afd.h File Reference

#include <ntifs.h>
#include <ndk/obtypes.h>
#include <tdi.h>
#include <tcpioctl.h>
#include <windef.h>
#include <winsock2.h>
#include <afd/shared.h>
#include <pseh/pseh2.h>
#include "tdi_proto.h"
#include "tdiconn.h"
#include "debug.h"

Include dependency graph for afd.h:

This graph shows which files directly or indirectly include this file:

Go to the source code of this file.

Classes
struct	IPADDR_ENTRY
struct	_AFD_MAPBUF
struct	_AFD_DEVICE_EXTENSION
struct	_AFD_ACTIVE_POLL
struct	_IRP_LIST
struct	_AFD_TDI_OBJECT
struct	_AFD_TDI_OBJECT_QELT
struct	_AFD_IN_FLIGHT_REQUEST
struct	_AFD_DATA_WINDOW
struct	_AFD_STORED_DATAGRAM
struct	_AFD_FCB

Macros
#define	_WINBASE_
#define	_WINDOWS_H
#define	_INC_WINDOWS
#define	MIN(x, y)   (((x)<(y))?(x):(y))
#define	TL_INSTANCE   0
#define	IP_MIB_STATS_ID   1
#define	IP_MIB_ADDRTABLE_ENTRY_ID   0x102
#define	TAG_AFD_DATA_BUFFER   'BdfA'
#define	TAG_AFD_TRANSPORT_ADDRESS   'tdfA'
#define	TAG_AFD_SOCKET_CONTEXT   'XdfA'
#define	TAG_AFD_CONNECT_DATA   'cdfA'
#define	TAG_AFD_DISCONNECT_DATA   'ddfA'
#define	TAG_AFD_CONNECT_OPTIONS   'ocfA'
#define	TAG_AFD_DISCONNECT_OPTIONS   'odfA'
#define	TAG_AFD_ACCEPT_QUEUE   'qafA'
#define	TAG_AFD_POLL_HANDLE   'hpfA'
#define	TAG_AFD_FCB   'cffA'
#define	TAG_AFD_ACTIVE_POLL   'pafA'
#define	TAG_AFD_EA_INFO   'aefA'
#define	TAG_AFD_STORED_DATAGRAM   'gsfA'
#define	TAG_AFD_SNMP_ADDRESS_INFO   'asfA'
#define	TAG_AFD_TDI_CONNECTION_INFORMATION   'cTfA'
#define	TAG_AFD_WSA_BUFFER   'bWfA'
#define	DN2H(dw)
#define	SOCKET_STATE_INVALID_TRANSITION   ((DWORD)-1)
#define	SOCKET_STATE_CREATED   0
#define	SOCKET_STATE_BOUND   1
#define	SOCKET_STATE_CONNECTING   2
#define	SOCKET_STATE_CONNECTED   3
#define	SOCKET_STATE_LISTENING   4
#define	SOCKET_STATE_MASK   0x0000ffff
#define	SOCKET_STATE_EOF_READ   0x20000000
#define	SOCKET_STATE_LOCKED   0x40000000
#define	SOCKET_STATE_NEW   0x80000000
#define	SOCKET_STATE_CLOSED   0x00000100
#define	FUNCTION_CONNECT   0
#define	FUNCTION_RECV   1
#define	FUNCTION_SEND   2
#define	FUNCTION_PREACCEPT   3
#define	FUNCTION_ACCEPT   4
#define	FUNCTION_DISCONNECT   5
#define	FUNCTION_CLOSE   6
#define	MAX_FUNCTIONS   7
#define	IN_FLIGHT_REQUESTS   5
#define	EXTRA_LOCK_BUFFERS
#define	AFD_HANDLES(x)   ((PAFD_HANDLE)(x)->Exclusive)
#define	SET_AFD_HANDLES(x, y)   (((x)->Exclusive) = (ULONG_PTR)(y))

Typedefs
typedef struct IPADDR_ENTRY	IPADDR_ENTRY
typedef struct IPADDR_ENTRY *	PIPADDR_ENTRY
typedef struct _AFD_MAPBUF	AFD_MAPBUF
typedef struct _AFD_MAPBUF *	PAFD_MAPBUF
typedef struct _AFD_DEVICE_EXTENSION	AFD_DEVICE_EXTENSION
typedef struct _AFD_DEVICE_EXTENSION *	PAFD_DEVICE_EXTENSION
typedef struct _AFD_ACTIVE_POLL	AFD_ACTIVE_POLL
typedef struct _AFD_ACTIVE_POLL *	PAFD_ACTIVE_POLL
typedef struct _IRP_LIST	IRP_LIST
typedef struct _IRP_LIST *	PIRP_LIST
typedef struct _AFD_TDI_OBJECT	AFD_TDI_OBJECT
typedef struct _AFD_TDI_OBJECT *	PAFD_TDI_OBJECT
typedef struct _AFD_TDI_OBJECT_QELT	AFD_TDI_OBJECT_QELT
typedef struct _AFD_TDI_OBJECT_QELT *	PAFD_TDI_OBJECT_QELT
typedef struct _AFD_IN_FLIGHT_REQUEST	AFD_IN_FLIGHT_REQUEST
typedef struct _AFD_IN_FLIGHT_REQUEST *	PAFD_IN_FLIGHT_REQUEST
typedef struct _AFD_DATA_WINDOW	AFD_DATA_WINDOW
typedef struct _AFD_DATA_WINDOW *	PAFD_DATA_WINDOW
typedef struct _AFD_STORED_DATAGRAM	AFD_STORED_DATAGRAM
typedef struct _AFD_STORED_DATAGRAM *	PAFD_STORED_DATAGRAM
typedef struct _AFD_FCB	AFD_FCB
typedef struct _AFD_FCB *	PAFD_FCB

Functions
NTSTATUS	WarmSocketForBind (PAFD_FCB FCB, ULONG ShareType)
NTSTATUS NTAPI	AfdBindSocket (PDEVICE_OBJECT DeviceObject, PIRP Irp, PIO_STACK_LOCATION IrpSp)
NTSTATUS	MakeSocketIntoConnection (PAFD_FCB FCB)
NTSTATUS	WarmSocketForConnection (PAFD_FCB FCB)
NTSTATUS NTAPI	AfdStreamSocketConnect (PDEVICE_OBJECT DeviceObject, PIRP Irp, PIO_STACK_LOCATION IrpSp)
NTSTATUS NTAPI	AfdGetConnectData (PDEVICE_OBJECT DeviceObject, PIRP Irp, PIO_STACK_LOCATION IrpSp)
NTSTATUS NTAPI	AfdSetConnectData (PDEVICE_OBJECT DeviceObject, PIRP Irp, PIO_STACK_LOCATION IrpSp)
NTSTATUS NTAPI	AfdSetConnectDataSize (PDEVICE_OBJECT DeviceObject, PIRP Irp, PIO_STACK_LOCATION IrpSp)
NTSTATUS NTAPI	AfdGetConnectOptions (PDEVICE_OBJECT DeviceObject, PIRP Irp, PIO_STACK_LOCATION IrpSp)
NTSTATUS NTAPI	AfdSetConnectOptions (PDEVICE_OBJECT DeviceObject, PIRP Irp, PIO_STACK_LOCATION IrpSp)
NTSTATUS NTAPI	AfdSetConnectOptionsSize (PDEVICE_OBJECT DeviceObject, PIRP Irp, PIO_STACK_LOCATION IrpSp)
NTSTATUS NTAPI	AfdGetContext (PDEVICE_OBJECT DeviceObject, PIRP Irp, PIO_STACK_LOCATION IrpSp)
NTSTATUS NTAPI	AfdGetContextSize (PDEVICE_OBJECT DeviceObject, PIRP Irp, PIO_STACK_LOCATION IrpSp)
NTSTATUS NTAPI	AfdSetContext (PDEVICE_OBJECT DeviceObject, PIRP Irp, PIO_STACK_LOCATION IrpSp)
NTSTATUS NTAPI	AfdGetInfo (PDEVICE_OBJECT DeviceObject, PIRP Irp, PIO_STACK_LOCATION IrpSp)
NTSTATUS NTAPI	AfdSetInfo (PDEVICE_OBJECT DeviceObject, PIRP Irp, PIO_STACK_LOCATION IrpSp)
NTSTATUS NTAPI	AfdGetSockName (PDEVICE_OBJECT DeviceObject, PIRP Irp, PIO_STACK_LOCATION IrpSp)
NTSTATUS NTAPI	AfdGetPeerName (PDEVICE_OBJECT DeviceObject, PIRP Irp, PIO_STACK_LOCATION IrpSp)
NTSTATUS	AfdWaitForListen (PDEVICE_OBJECT DeviceObject, PIRP Irp, PIO_STACK_LOCATION IrpSp)
NTSTATUS	AfdListenSocket (PDEVICE_OBJECT DeviceObject, PIRP Irp, PIO_STACK_LOCATION IrpSp)
NTSTATUS	AfdAccept (PDEVICE_OBJECT DeviceObject, PIRP Irp, PIO_STACK_LOCATION IrpSp)
PAFD_WSABUF	LockBuffers (PAFD_WSABUF Buf, UINT Count, PVOID AddressBuf, PINT AddressLen, BOOLEAN Write, BOOLEAN LockAddress, KPROCESSOR_MODE LockMode)
VOID	UnlockBuffers (PAFD_WSABUF Buf, UINT Count, BOOL Address)
BOOLEAN	SocketAcquireStateLock (PAFD_FCB FCB)
NTSTATUS NTAPI	UnlockAndMaybeComplete (PAFD_FCB FCB, NTSTATUS Status, PIRP Irp, UINT Information)
VOID	SocketStateUnlock (PAFD_FCB FCB)
NTSTATUS	LostSocket (PIRP Irp)
PAFD_HANDLE	LockHandles (PAFD_HANDLE HandleArray, UINT HandleCount)
VOID	UnlockHandles (PAFD_HANDLE HandleArray, UINT HandleCount)
PVOID	LockRequest (PIRP Irp, PIO_STACK_LOCATION IrpSp, BOOLEAN Output, KPROCESSOR_MODE *LockMode)
VOID	UnlockRequest (PIRP Irp, PIO_STACK_LOCATION IrpSp)
PVOID	GetLockedData (PIRP Irp, PIO_STACK_LOCATION IrpSp)
NTSTATUS	LeaveIrpUntilLater (PAFD_FCB FCB, PIRP Irp, UINT Function)
NTSTATUS	QueueUserModeIrp (PAFD_FCB FCB, PIRP Irp, UINT Function)
VOID	OskitDumpBuffer (PCHAR Buffer, UINT Len)
VOID	DestroySocket (PAFD_FCB FCB)
VOID	RetryDisconnectCompletion (PAFD_FCB FCB)
BOOLEAN	CheckUnlockExtraBuffers (PAFD_FCB FCB, PIO_STACK_LOCATION IrpSp)
NTSTATUS NTAPI	AfdConnectedSocketReadData (PDEVICE_OBJECT DeviceObject, PIRP Irp, PIO_STACK_LOCATION IrpSp, BOOLEAN Short)
NTSTATUS NTAPI	AfdPacketSocketReadData (PDEVICE_OBJECT DeviceObject, PIRP Irp, PIO_STACK_LOCATION IrpSp)
NTSTATUS NTAPI	AfdSelect (PDEVICE_OBJECT DeviceObject, PIRP Irp, PIO_STACK_LOCATION IrpSp)
NTSTATUS NTAPI	AfdEventSelect (PDEVICE_OBJECT DeviceObject, PIRP Irp, PIO_STACK_LOCATION IrpSp)
NTSTATUS NTAPI	AfdEnumEvents (PDEVICE_OBJECT DeviceObject, PIRP Irp, PIO_STACK_LOCATION IrpSp)
VOID	PollReeval (PAFD_DEVICE_EXTENSION DeviceObject, PFILE_OBJECT FileObject)
VOID	KillSelectsForFCB (PAFD_DEVICE_EXTENSION DeviceExt, PFILE_OBJECT FileObject, BOOLEAN ExclusiveOnly)
VOID	ZeroEvents (PAFD_HANDLE HandleArray, UINT HandleCount)
VOID	SignalSocket (PAFD_ACTIVE_POLL Poll OPTIONAL, PIRP _Irp OPTIONAL, PAFD_POLL_INFO PollReq, NTSTATUS Status)
NTSTATUS	TdiOpenAddressFile (PUNICODE_STRING DeviceName, PTRANSPORT_ADDRESS Name, ULONG ShareType, PHANDLE AddressHandle, PFILE_OBJECT *AddressObject)
NTSTATUS	TdiAssociateAddressFile (HANDLE AddressHandle, PFILE_OBJECT ConnectionObject)
NTSTATUS	TdiDisassociateAddressFile (PFILE_OBJECT ConnectionObject)
NTSTATUS	TdiListen (PIRP *Irp, PFILE_OBJECT ConnectionObject, PTDI_CONNECTION_INFORMATION *RequestConnectionInfo, PTDI_CONNECTION_INFORMATION *ReturnConnectionInfo, PIO_COMPLETION_ROUTINE CompletionRoutine, PVOID CompletionContext)
NTSTATUS	TdiReceive (PIRP *Irp, PFILE_OBJECT ConnectionObject, USHORT Flags, PCHAR Buffer, UINT BufferLength, PIO_COMPLETION_ROUTINE CompletionRoutine, PVOID CompletionContext)
NTSTATUS	TdiSend (PIRP *Irp, PFILE_OBJECT ConnectionObject, USHORT Flags, PCHAR Buffer, UINT BufferLength, PIO_COMPLETION_ROUTINE CompletionRoutine, PVOID CompletionContext)
NTSTATUS	TdiReceiveDatagram (PIRP *Irp, PFILE_OBJECT TransportObject, USHORT Flags, PCHAR Buffer, UINT BufferLength, PTDI_CONNECTION_INFORMATION From, PIO_COMPLETION_ROUTINE CompletionRoutine, PVOID CompletionContext)
NTSTATUS	TdiSendDatagram (PIRP *Irp, PFILE_OBJECT TransportObject, PCHAR Buffer, UINT BufferLength, PTDI_CONNECTION_INFORMATION To, PIO_COMPLETION_ROUTINE CompletionRoutine, PVOID CompletionContext)
NTSTATUS	TdiQueryMaxDatagramLength (PFILE_OBJECT FileObject, PUINT MaxDatagramLength)
NTSTATUS NTAPI	AfdConnectedSocketWriteData (PDEVICE_OBJECT DeviceObject, PIRP Irp, PIO_STACK_LOCATION IrpSp, BOOLEAN Short)
NTSTATUS NTAPI	AfdPacketSocketWriteData (PDEVICE_OBJECT DeviceObject, PIRP Irp, PIO_STACK_LOCATION IrpSp)

Variables
DRIVER_CANCEL	AfdCancelHandler
IO_COMPLETION_ROUTINE	ReceiveComplete
IO_COMPLETION_ROUTINE	PacketSocketRecvComplete

Macro Definition Documentation

_INC_WINDOWS

#define _INC_WINDOWS

Definition at line 20 of file afd.h.

_WINBASE_

#define _WINBASE_

Definition at line 18 of file afd.h.

_WINDOWS_H

#define _WINDOWS_H

Definition at line 19 of file afd.h.

AFD_HANDLES

#define AFD_HANDLES

(

x

)

((PAFD_HANDLE)(x)->Exclusive)

Definition at line 102 of file afd.h.

DN2H

#define DN2H

(

dw

)

Value:

((((dw) & 0xFF000000L) >> 24) | \
     (((dw) & 0x00FF0000L) >> 8) | \
     (((dw) & 0x0000FF00L) << 8) | \
     (((dw) & 0x000000FFL) << 24))

Definition at line 66 of file afd.h.

EXTRA_LOCK_BUFFERS

#define EXTRA_LOCK_BUFFERS

Value:

2 /* Number of extra buffers needed
                       * for ancillary data on packet
                       * requests. */

Definition at line 95 of file afd.h.

FUNCTION_ACCEPT

#define FUNCTION_ACCEPT   4

Definition at line 88 of file afd.h.

FUNCTION_CLOSE

#define FUNCTION_CLOSE   6

Definition at line 90 of file afd.h.

FUNCTION_CONNECT

#define FUNCTION_CONNECT   0

Definition at line 84 of file afd.h.

FUNCTION_DISCONNECT

#define FUNCTION_DISCONNECT   5

Definition at line 89 of file afd.h.

FUNCTION_PREACCEPT

#define FUNCTION_PREACCEPT   3

Definition at line 87 of file afd.h.

FUNCTION_RECV

#define FUNCTION_RECV   1

Definition at line 85 of file afd.h.

FUNCTION_SEND

#define FUNCTION_SEND   2

Definition at line 86 of file afd.h.

IN_FLIGHT_REQUESTS

#define IN_FLIGHT_REQUESTS   5

Definition at line 93 of file afd.h.

IP_MIB_ADDRTABLE_ENTRY_ID

#define IP_MIB_ADDRTABLE_ENTRY_ID   0x102

Definition at line 36 of file afd.h.

IP_MIB_STATS_ID

#define IP_MIB_STATS_ID   1

Definition at line 35 of file afd.h.

MAX_FUNCTIONS

#define MAX_FUNCTIONS   7

Definition at line 91 of file afd.h.

MIN

#define MIN	(		x,
			y
	)		(((x)<(y))?(x):(y))

Definition at line 31 of file afd.h.

SET_AFD_HANDLES

#define SET_AFD_HANDLES	(		x,
			y
	)		(((x)->Exclusive) = (ULONG_PTR)(y))

Definition at line 103 of file afd.h.

SOCKET_STATE_BOUND

#define SOCKET_STATE_BOUND   1

Definition at line 74 of file afd.h.

SOCKET_STATE_CLOSED

#define SOCKET_STATE_CLOSED   0x00000100

Definition at line 82 of file afd.h.

SOCKET_STATE_CONNECTED

#define SOCKET_STATE_CONNECTED   3

Definition at line 76 of file afd.h.

SOCKET_STATE_CONNECTING

#define SOCKET_STATE_CONNECTING   2

Definition at line 75 of file afd.h.

SOCKET_STATE_CREATED

#define SOCKET_STATE_CREATED   0

Definition at line 73 of file afd.h.

SOCKET_STATE_EOF_READ

#define SOCKET_STATE_EOF_READ   0x20000000

Definition at line 79 of file afd.h.

SOCKET_STATE_INVALID_TRANSITION

#define SOCKET_STATE_INVALID_TRANSITION   ((DWORD)-1)

Definition at line 72 of file afd.h.

SOCKET_STATE_LISTENING

#define SOCKET_STATE_LISTENING   4

Definition at line 77 of file afd.h.

SOCKET_STATE_LOCKED

#define SOCKET_STATE_LOCKED   0x40000000

Definition at line 80 of file afd.h.

SOCKET_STATE_MASK

#define SOCKET_STATE_MASK   0x0000ffff

Definition at line 78 of file afd.h.

SOCKET_STATE_NEW

#define SOCKET_STATE_NEW   0x80000000

Definition at line 81 of file afd.h.

TAG_AFD_ACCEPT_QUEUE

#define TAG_AFD_ACCEPT_QUEUE   'qafA'

Definition at line 46 of file afd.h.

TAG_AFD_ACTIVE_POLL

#define TAG_AFD_ACTIVE_POLL   'pafA'

Definition at line 49 of file afd.h.

TAG_AFD_CONNECT_DATA

#define TAG_AFD_CONNECT_DATA   'cdfA'

Definition at line 41 of file afd.h.

TAG_AFD_CONNECT_OPTIONS

#define TAG_AFD_CONNECT_OPTIONS   'ocfA'

Definition at line 44 of file afd.h.

TAG_AFD_DATA_BUFFER

#define TAG_AFD_DATA_BUFFER   'BdfA'

Definition at line 38 of file afd.h.

TAG_AFD_DISCONNECT_DATA

#define TAG_AFD_DISCONNECT_DATA   'ddfA'

Definition at line 42 of file afd.h.

TAG_AFD_DISCONNECT_OPTIONS

#define TAG_AFD_DISCONNECT_OPTIONS   'odfA'

Definition at line 45 of file afd.h.

TAG_AFD_EA_INFO

#define TAG_AFD_EA_INFO   'aefA'

Definition at line 50 of file afd.h.

TAG_AFD_FCB

#define TAG_AFD_FCB   'cffA'

Definition at line 48 of file afd.h.

TAG_AFD_POLL_HANDLE

#define TAG_AFD_POLL_HANDLE   'hpfA'

Definition at line 47 of file afd.h.

TAG_AFD_SNMP_ADDRESS_INFO

#define TAG_AFD_SNMP_ADDRESS_INFO   'asfA'

Definition at line 52 of file afd.h.

TAG_AFD_SOCKET_CONTEXT

#define TAG_AFD_SOCKET_CONTEXT   'XdfA'

Definition at line 40 of file afd.h.

TAG_AFD_STORED_DATAGRAM

#define TAG_AFD_STORED_DATAGRAM   'gsfA'

Definition at line 51 of file afd.h.

TAG_AFD_TDI_CONNECTION_INFORMATION

#define TAG_AFD_TDI_CONNECTION_INFORMATION   'cTfA'

Definition at line 53 of file afd.h.

TAG_AFD_TRANSPORT_ADDRESS

#define TAG_AFD_TRANSPORT_ADDRESS   'tdfA'

Definition at line 39 of file afd.h.

TAG_AFD_WSA_BUFFER

#define TAG_AFD_WSA_BUFFER   'bWfA'

Definition at line 54 of file afd.h.

TL_INSTANCE

#define TL_INSTANCE   0

Definition at line 34 of file afd.h.

Typedef Documentation

AFD_ACTIVE_POLL

typedef struct _AFD_ACTIVE_POLL AFD_ACTIVE_POLL

AFD_DATA_WINDOW

typedef struct _AFD_DATA_WINDOW AFD_DATA_WINDOW

AFD_DEVICE_EXTENSION

typedef struct _AFD_DEVICE_EXTENSION AFD_DEVICE_EXTENSION

AFD_FCB

typedef struct _AFD_FCB AFD_FCB

AFD_IN_FLIGHT_REQUEST

typedef struct _AFD_IN_FLIGHT_REQUEST AFD_IN_FLIGHT_REQUEST

AFD_MAPBUF

typedef struct _AFD_MAPBUF AFD_MAPBUF

AFD_STORED_DATAGRAM

typedef struct _AFD_STORED_DATAGRAM AFD_STORED_DATAGRAM

AFD_TDI_OBJECT

typedef struct _AFD_TDI_OBJECT AFD_TDI_OBJECT

AFD_TDI_OBJECT_QELT

typedef struct _AFD_TDI_OBJECT_QELT AFD_TDI_OBJECT_QELT

IPADDR_ENTRY

typedef struct IPADDR_ENTRY IPADDR_ENTRY

IRP_LIST

typedef struct _IRP_LIST IRP_LIST

PAFD_ACTIVE_POLL

typedef struct _AFD_ACTIVE_POLL * PAFD_ACTIVE_POLL

PAFD_DATA_WINDOW

typedef struct _AFD_DATA_WINDOW * PAFD_DATA_WINDOW

PAFD_DEVICE_EXTENSION

typedef struct _AFD_DEVICE_EXTENSION * PAFD_DEVICE_EXTENSION

PAFD_FCB

typedef struct _AFD_FCB * PAFD_FCB

PAFD_IN_FLIGHT_REQUEST

typedef struct _AFD_IN_FLIGHT_REQUEST * PAFD_IN_FLIGHT_REQUEST

PAFD_MAPBUF

typedef struct _AFD_MAPBUF * PAFD_MAPBUF

PAFD_STORED_DATAGRAM

typedef struct _AFD_STORED_DATAGRAM * PAFD_STORED_DATAGRAM

PAFD_TDI_OBJECT

typedef struct _AFD_TDI_OBJECT * PAFD_TDI_OBJECT

PAFD_TDI_OBJECT_QELT

typedef struct _AFD_TDI_OBJECT_QELT * PAFD_TDI_OBJECT_QELT

PIPADDR_ENTRY

typedef struct IPADDR_ENTRY * PIPADDR_ENTRY

PIRP_LIST

typedef struct _IRP_LIST * PIRP_LIST

Function Documentation

AfdAccept()

NTSTATUS AfdAccept	(	PDEVICE_OBJECT	DeviceObject,
		PIRP	Irp,
		PIO_STACK_LOCATION	IrpSp
	)

Definition at line 337 of file listen.c.

                                               {
    NTSTATUS Status = STATUS_SUCCESS;
    PFILE_OBJECT FileObject = IrpSp->FileObject;
    PAFD_DEVICE_EXTENSION DeviceExt =
        (PAFD_DEVICE_EXTENSION)DeviceObject->DeviceExtension;
    PAFD_FCB FCB = FileObject->FsContext;
    PAFD_ACCEPT_DATA AcceptData = Irp->AssociatedIrp.SystemBuffer;
    PLIST_ENTRY PendingConn;

    AFD_DbgPrint(MID_TRACE,("Called\n"));

    if( !SocketAcquireStateLock( FCB ) ) return LostSocket( Irp );

    FCB->EventSelectDisabled &= ~AFD_EVENT_ACCEPT;

    for( PendingConn = FCB->PendingConnections.Flink;
         PendingConn != &FCB->PendingConnections;
         PendingConn = PendingConn->Flink ) {
        PAFD_TDI_OBJECT_QELT PendingConnObj =
            CONTAINING_RECORD( PendingConn, AFD_TDI_OBJECT_QELT, ListEntry );

        AFD_DbgPrint(MID_TRACE,("Comparing Seq %u to Q %u\n",
                                AcceptData->SequenceNumber,
                                PendingConnObj->Seq));

        if( PendingConnObj->Seq == AcceptData->SequenceNumber ) {
            PFILE_OBJECT NewFileObject = NULL;

            RemoveEntryList( PendingConn );

            Status = ObReferenceObjectByHandle
                ( AcceptData->ListenHandle,
                  FILE_ALL_ACCESS,
                  NULL,
                  KernelMode,
                  (PVOID *)&NewFileObject,
                  NULL );

            if( !NT_SUCCESS(Status) ) return UnlockAndMaybeComplete( FCB, Status, Irp, 0 );

            ASSERT(NewFileObject != FileObject);
            ASSERT(NewFileObject->FsContext != FCB);

            /* We have a pending connection ... complete this irp right away */
            Status = SatisfyAccept( DeviceExt, Irp, NewFileObject, PendingConnObj );

            ObDereferenceObject( NewFileObject );

            AFD_DbgPrint(MID_TRACE,("Completed a wait for accept\n"));

            ExFreePoolWithTag(PendingConnObj, TAG_AFD_ACCEPT_QUEUE);

            if( !IsListEmpty( &FCB->PendingConnections ) )
            {
                FCB->PollState |= AFD_EVENT_ACCEPT;
                FCB->PollStatus[FD_ACCEPT_BIT] = STATUS_SUCCESS;
                PollReeval( FCB->DeviceExt, FCB->FileObject );
            } else
                FCB->PollState &= ~AFD_EVENT_ACCEPT;

            SocketStateUnlock( FCB );
            return Status;
        }
    }

    AFD_DbgPrint(MIN_TRACE,("No connection waiting\n"));

    return UnlockAndMaybeComplete( FCB, STATUS_UNSUCCESSFUL, Irp, 0 );
}

Referenced by AfdDispatch().

AfdBindSocket()

NTSTATUS NTAPI AfdBindSocket	(	PDEVICE_OBJECT	DeviceObject,
		PIRP	Irp,
		PIO_STACK_LOCATION	IrpSp
	)

Definition at line 76 of file bind.c.

                                        {
    NTSTATUS Status = STATUS_SUCCESS;
    PFILE_OBJECT FileObject = IrpSp->FileObject;
    PAFD_FCB FCB = FileObject->FsContext;
    PAFD_BIND_DATA BindReq;
    HANDLE UserHandle = NULL;

    UNREFERENCED_PARAMETER(DeviceObject);

    AFD_DbgPrint(MID_TRACE,("Called\n"));

    if( !SocketAcquireStateLock( FCB ) ) return LostSocket( Irp );
    if( !(BindReq = LockRequest( Irp, IrpSp, FALSE, NULL )) )
        return UnlockAndMaybeComplete( FCB, STATUS_NO_MEMORY,
                                       Irp, 0 );

    if (FCB->LocalAddress)
    {
        ExFreePoolWithTag(FCB->LocalAddress, TAG_AFD_TRANSPORT_ADDRESS);
    }

    FCB->LocalAddress = TaCopyTransportAddress( &BindReq->Address );

    if( FCB->LocalAddress )
        Status = TdiBuildConnectionInfo( &FCB->AddressFrom,
                                         FCB->LocalAddress );

    if( NT_SUCCESS(Status) )
        Status = WarmSocketForBind( FCB, BindReq->ShareType );
    AFD_DbgPrint(MID_TRACE,("FCB->Flags %x\n", FCB->Flags));

    if (NT_SUCCESS(Status))
    {
        Status = ObOpenObjectByPointer(FCB->AddressFile.Object,
                                       0,
                                       NULL,
                                       MAXIMUM_ALLOWED,
                                       *IoFileObjectType,
                                       Irp->RequestorMode,
                                       &UserHandle);
        if (NT_SUCCESS(Status))
            FCB->State = SOCKET_STATE_BOUND;
    }

    /* MSAFD relies on us returning the address file handle in the IOSB */
    return UnlockAndMaybeComplete( FCB, Status, Irp,
                                   (ULONG_PTR)UserHandle);
}

Referenced by AfdDispatch().

AfdConnectedSocketReadData()

NTSTATUS NTAPI AfdConnectedSocketReadData	(	PDEVICE_OBJECT	DeviceObject,
		PIRP	Irp,
		PIO_STACK_LOCATION	IrpSp,
		BOOLEAN	Short
	)

Definition at line 422 of file read.c.

                                                                    {
    NTSTATUS Status = STATUS_INVALID_PARAMETER;
    PFILE_OBJECT FileObject = IrpSp->FileObject;
    PAFD_FCB FCB = FileObject->FsContext;
    PAFD_RECV_INFO RecvReq;
    UINT TotalBytesCopied = 0;
    PAFD_STORED_DATAGRAM DatagramRecv;
    PLIST_ENTRY ListEntry;
    KPROCESSOR_MODE LockMode;

    UNREFERENCED_PARAMETER(DeviceObject);
    UNREFERENCED_PARAMETER(Short);

    AFD_DbgPrint(MID_TRACE,("Called on %p\n", FCB));

    if( !SocketAcquireStateLock( FCB ) ) return LostSocket( Irp );

    FCB->EventSelectDisabled &= ~AFD_EVENT_RECEIVE;

    if( !(FCB->Flags & AFD_ENDPOINT_CONNECTIONLESS) &&
        FCB->State != SOCKET_STATE_CONNECTED &&
        FCB->State != SOCKET_STATE_CONNECTING ) {
        AFD_DbgPrint(MIN_TRACE,("Called recv on wrong kind of socket (s%x)\n",
                                FCB->State));
        return UnlockAndMaybeComplete( FCB, STATUS_INVALID_PARAMETER,
                                       Irp, 0 );
    }

    if( !(RecvReq = LockRequest( Irp, IrpSp, FALSE, &LockMode )) )
        return UnlockAndMaybeComplete( FCB, STATUS_NO_MEMORY,
                                       Irp, 0 );

    AFD_DbgPrint(MID_TRACE,("Recv flags %x\n", RecvReq->AfdFlags));

    RecvReq->BufferArray = LockBuffers( RecvReq->BufferArray,
                                       RecvReq->BufferCount,
                                       NULL, NULL,
                                       TRUE, FALSE, LockMode );

    if( !RecvReq->BufferArray ) {
        return UnlockAndMaybeComplete( FCB, STATUS_ACCESS_VIOLATION,
                                      Irp, 0 );
    }

    if( FCB->Flags & AFD_ENDPOINT_CONNECTIONLESS )
    {
        if (!IsListEmpty(&FCB->DatagramList))
        {
            ListEntry = RemoveHeadList(&FCB->DatagramList);
            DatagramRecv = CONTAINING_RECORD(ListEntry, AFD_STORED_DATAGRAM, ListEntry);
            Status = SatisfyPacketRecvRequest(FCB, Irp, DatagramRecv,
                                              (PUINT)&Irp->IoStatus.Information);

            if (RecvReq->TdiFlags & TDI_RECEIVE_PEEK)
            {
                InsertHeadList(&FCB->DatagramList,
                               &DatagramRecv->ListEntry);
            }

            if (!IsListEmpty(&FCB->DatagramList))
            {
                FCB->PollState |= AFD_EVENT_RECEIVE;
                FCB->PollStatus[FD_READ_BIT] = STATUS_SUCCESS;
                PollReeval( FCB->DeviceExt, FCB->FileObject );
            }
            else
                FCB->PollState &= ~AFD_EVENT_RECEIVE;

            UnlockBuffers(RecvReq->BufferArray, RecvReq->BufferCount, FALSE);

            return UnlockAndMaybeComplete(FCB, Status, Irp, Irp->IoStatus.Information);
        }
        else if (!(RecvReq->AfdFlags & AFD_OVERLAPPED) &&
                ((RecvReq->AfdFlags & AFD_IMMEDIATE) || (FCB->NonBlocking)))
        {
            AFD_DbgPrint(MID_TRACE,("Nonblocking\n"));
            Status = STATUS_CANT_WAIT;
            FCB->PollState &= ~AFD_EVENT_RECEIVE;
            UnlockBuffers( RecvReq->BufferArray, RecvReq->BufferCount, FALSE );
            return UnlockAndMaybeComplete( FCB, Status, Irp, 0 );
        }
        else
        {
            FCB->PollState &= ~AFD_EVENT_RECEIVE;
            return LeaveIrpUntilLater( FCB, Irp, FUNCTION_RECV );
        }
    }

    Irp->IoStatus.Status = STATUS_PENDING;
    Irp->IoStatus.Information = 0;

    InsertTailList( &FCB->PendingIrpList[FUNCTION_RECV],
                    &Irp->Tail.Overlay.ListEntry );

    /************ From this point, the IRP is not ours ************/

    Status = ReceiveActivity( FCB, Irp );

    if( Status == STATUS_PENDING &&
        !(RecvReq->AfdFlags & AFD_OVERLAPPED) &&
        ((RecvReq->AfdFlags & AFD_IMMEDIATE) || (FCB->NonBlocking))) {
        AFD_DbgPrint(MID_TRACE,("Nonblocking\n"));
        Status = STATUS_CANT_WAIT;
        TotalBytesCopied = 0;
        RemoveEntryList( &Irp->Tail.Overlay.ListEntry );
        UnlockBuffers( RecvReq->BufferArray, RecvReq->BufferCount, FALSE );
        return UnlockAndMaybeComplete( FCB, Status, Irp,
                                       TotalBytesCopied );
    } else if( Status == STATUS_PENDING ) {
        AFD_DbgPrint(MID_TRACE,("Leaving read irp\n"));
        IoMarkIrpPending( Irp );
        (void)IoSetCancelRoutine(Irp, AfdCancelHandler);
    } else {
        AFD_DbgPrint(MID_TRACE,("Completed with status %x\n", Status));
    }

    SocketStateUnlock( FCB );
    return Status;
}

Referenced by AfdDispatch().

AfdConnectedSocketWriteData()

NTSTATUS NTAPI AfdConnectedSocketWriteData	(	PDEVICE_OBJECT	DeviceObject,
		PIRP	Irp,
		PIO_STACK_LOCATION	IrpSp,
		BOOLEAN	Short
	)

Definition at line 329 of file write.c.

                                                                     {
    NTSTATUS Status = STATUS_SUCCESS;
    PFILE_OBJECT FileObject = IrpSp->FileObject;
    PAFD_FCB FCB = FileObject->FsContext;
    PAFD_SEND_INFO SendReq;
    UINT TotalBytesCopied = 0, i, SpaceAvail = 0, BytesCopied, SendLength;
    KPROCESSOR_MODE LockMode;

    UNREFERENCED_PARAMETER(DeviceObject);
    UNREFERENCED_PARAMETER(Short);

    AFD_DbgPrint(MID_TRACE,("Called on %p\n", FCB));

    if( !SocketAcquireStateLock( FCB ) ) return LostSocket( Irp );

    FCB->EventSelectDisabled &= ~AFD_EVENT_SEND;

    if( FCB->Flags & AFD_ENDPOINT_CONNECTIONLESS )
    {
        PAFD_SEND_INFO_UDP SendReq;
        PTDI_CONNECTION_INFORMATION TargetAddress;

        /* Check that the socket is bound */
        if( FCB->State != SOCKET_STATE_BOUND || !FCB->RemoteAddress )
        {
            AFD_DbgPrint(MIN_TRACE,("Invalid parameter\n"));
            return UnlockAndMaybeComplete( FCB, STATUS_INVALID_PARAMETER, Irp,
                                           0 );
        }

        if( !(SendReq = LockRequest( Irp, IrpSp, FALSE, &LockMode )) )
            return UnlockAndMaybeComplete( FCB, STATUS_NO_MEMORY, Irp, 0 );

        /* Must lock buffers before handing off user data */
        SendReq->BufferArray = LockBuffers( SendReq->BufferArray,
                                            SendReq->BufferCount,
                                            NULL, NULL,
                                            FALSE, FALSE, LockMode );

        if( !SendReq->BufferArray ) {
            return UnlockAndMaybeComplete( FCB, STATUS_ACCESS_VIOLATION,
                                           Irp, 0 );
        }

        Status = TdiBuildConnectionInfo( &TargetAddress, FCB->RemoteAddress );

        if( NT_SUCCESS(Status) ) {
            FCB->PollState &= ~AFD_EVENT_SEND;

            Status = QueueUserModeIrp(FCB, Irp, FUNCTION_SEND);
            if (Status == STATUS_PENDING)
            {
                Status = TdiSendDatagram(&FCB->SendIrp.InFlightRequest,
                                         FCB->AddressFile.Object,
                                         SendReq->BufferArray[0].buf,
                                         SendReq->BufferArray[0].len,
                                         TargetAddress,
                                         PacketSocketSendComplete,
                                         FCB);
                if (Status != STATUS_PENDING)
                {
                    NT_VERIFY(RemoveHeadList(&FCB->PendingIrpList[FUNCTION_SEND]) == &Irp->Tail.Overlay.ListEntry);
                    Irp->IoStatus.Status = Status;
                    Irp->IoStatus.Information = 0;
                    (void)IoSetCancelRoutine(Irp, NULL);
                    UnlockBuffers(SendReq->BufferArray, SendReq->BufferCount, FALSE);
                    UnlockRequest(Irp, IoGetCurrentIrpStackLocation(Irp));
                    IoCompleteRequest(Irp, IO_NETWORK_INCREMENT);
                }
            }

            ExFreePoolWithTag(TargetAddress, TAG_AFD_TDI_CONNECTION_INFORMATION);

            SocketStateUnlock(FCB);

            return STATUS_PENDING;
        }
        else
        {
            UnlockBuffers(SendReq->BufferArray, SendReq->BufferCount, FALSE);
            return UnlockAndMaybeComplete( FCB, Status, Irp, 0 );
        }
    }

    if (FCB->PollState & AFD_EVENT_CLOSE)
    {
        AFD_DbgPrint(MIN_TRACE,("Connection reset by remote peer\n"));

        /* This is an unexpected remote disconnect */
        return UnlockAndMaybeComplete(FCB, FCB->PollStatus[FD_CLOSE_BIT], Irp, 0);
    }

    if (FCB->PollState & AFD_EVENT_ABORT)
    {
        AFD_DbgPrint(MIN_TRACE,("Connection aborted\n"));

        /* This is an abortive socket closure on our side */
        return UnlockAndMaybeComplete(FCB, FCB->PollStatus[FD_CLOSE_BIT], Irp, 0);
    }

    if (FCB->SendClosed)
    {
        AFD_DbgPrint(MIN_TRACE,("No more sends\n"));

        /* This is a graceful send closure */
        return UnlockAndMaybeComplete(FCB, STATUS_FILE_CLOSED, Irp, 0);
    }

    if( !(SendReq = LockRequest( Irp, IrpSp, FALSE, &LockMode )) )
        return UnlockAndMaybeComplete
            ( FCB, STATUS_NO_MEMORY, Irp, 0 );

    SendReq->BufferArray = LockBuffers( SendReq->BufferArray,
                                        SendReq->BufferCount,
                                        NULL, NULL,
                                        FALSE, FALSE, LockMode );

    if( !SendReq->BufferArray ) {
        return UnlockAndMaybeComplete( FCB, STATUS_ACCESS_VIOLATION,
                                       Irp, 0 );
    }

    AFD_DbgPrint(MID_TRACE,("Socket state %u\n", FCB->State));

    if( FCB->State != SOCKET_STATE_CONNECTED ) {
        AFD_DbgPrint(MID_TRACE,("Socket not connected\n"));
        UnlockBuffers( SendReq->BufferArray, SendReq->BufferCount, FALSE );
        return UnlockAndMaybeComplete( FCB, STATUS_INVALID_CONNECTION, Irp, 0 );
    }

    AFD_DbgPrint(MID_TRACE,("FCB->Send.BytesUsed = %u\n",
                            FCB->Send.BytesUsed));

    SpaceAvail = FCB->Send.Size - FCB->Send.BytesUsed;

    AFD_DbgPrint(MID_TRACE,("We can accept %u bytes\n",
                            SpaceAvail));

    /* 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;
            return LeaveIrpUntilLater(FCB, Irp, FUNCTION_SEND);
        }

        /* Check if we can send anything */
        if (SpaceAvail == 0)
        {
            FCB->PollState &= ~AFD_EVENT_SEND;

            /* Non-overlapped sockets will fail if we can send nothing */
            if (!(SendReq->AfdFlags & AFD_OVERLAPPED))
            {
                UnlockBuffers( SendReq->BufferArray, SendReq->BufferCount, FALSE );
                return UnlockAndMaybeComplete( FCB, STATUS_CANT_WAIT, Irp, 0 );
            }
            else
            {
                /* Overlapped sockets just pend */
                return LeaveIrpUntilLater(FCB, Irp, FUNCTION_SEND);
            }
        }
    }

    for ( i = 0; SpaceAvail > 0 && i < SendReq->BufferCount; i++ )
    {
        BytesCopied = MIN(SendReq->BufferArray[i].len, SpaceAvail);

        AFD_DbgPrint(MID_TRACE,("Copying Buffer %u, %p:%u to %p\n",
                                i,
                                SendReq->BufferArray[i].buf,
                                BytesCopied,
                                FCB->Send.Window + FCB->Send.BytesUsed));

        RtlCopyMemory(FCB->Send.Window + FCB->Send.BytesUsed,
                      SendReq->BufferArray[i].buf,
                      BytesCopied);

        TotalBytesCopied += BytesCopied;
        SpaceAvail -= BytesCopied;
        FCB->Send.BytesUsed += BytesCopied;
    }

    Irp->IoStatus.Information = TotalBytesCopied;

    if( TotalBytesCopied == 0 ) {
        AFD_DbgPrint(MID_TRACE,("Empty send\n"));
        UnlockBuffers( SendReq->BufferArray, SendReq->BufferCount, FALSE );
        return UnlockAndMaybeComplete
        ( FCB, STATUS_SUCCESS, Irp, TotalBytesCopied );
    }

    if (SpaceAvail)
    {
        FCB->PollState |= AFD_EVENT_SEND;
        FCB->PollStatus[FD_WRITE_BIT] = STATUS_SUCCESS;
        PollReeval( FCB->DeviceExt, FCB->FileObject );
    }
    else
    {
        FCB->PollState &= ~AFD_EVENT_SEND;
    }

    /* We use the IRP tail for some temporary storage here */
    Irp->Tail.Overlay.DriverContext[3] = (PVOID)Irp->IoStatus.Information;

    Status = QueueUserModeIrp(FCB, Irp, FUNCTION_SEND);
    if (Status == STATUS_PENDING && !FCB->SendIrp.InFlightRequest)
    {
        TdiSend(&FCB->SendIrp.InFlightRequest,
                FCB->Connection.Object,
                0,
                FCB->Send.Window,
                FCB->Send.BytesUsed,
                SendComplete,
                FCB);
    }

    SocketStateUnlock(FCB);

    return STATUS_PENDING;
}

Referenced by AfdDispatch(), and StreamSocketConnectComplete().

AfdEnumEvents()

NTSTATUS NTAPI AfdEnumEvents	(	PDEVICE_OBJECT	DeviceObject,
		PIRP	Irp,
		PIO_STACK_LOCATION	IrpSp
	)

Definition at line 328 of file select.c.

                                          {
    PFILE_OBJECT FileObject = IrpSp->FileObject;
    PAFD_ENUM_NETWORK_EVENTS_INFO EnumReq =
        (PAFD_ENUM_NETWORK_EVENTS_INFO)LockRequest( Irp, IrpSp, TRUE, NULL );
    PAFD_FCB FCB = FileObject->FsContext;
    PKEVENT UserEvent;
    NTSTATUS Status;

    UNREFERENCED_PARAMETER(DeviceObject);

    AFD_DbgPrint(MID_TRACE,("Called (FCB %p)\n", FCB));

    if( !SocketAcquireStateLock( FCB ) ) {
        return LostSocket( Irp );
    }

    if ( !EnumReq ) {
         return UnlockAndMaybeComplete( FCB, STATUS_NO_MEMORY, Irp, 0 );
    }

    /* An event may optionally be provided for us to clear */
    if (EnumReq->Event != NULL)
    {
        Status = ObReferenceObjectByHandle(EnumReq->Event,
                                           EVENT_ALL_ACCESS,
                                           *ExEventObjectType,
                                           UserMode,
                                           (PVOID *)&UserEvent,
                                           NULL);
        if (!NT_SUCCESS(Status))
        {
            AFD_DbgPrint(MIN_TRACE,("Unable to reference event %x\n", Status));
            return UnlockAndMaybeComplete(FCB, Status, Irp, 0);
        }

        /* Clear the event */
        KeClearEvent(UserEvent);
        ObDereferenceObject(UserEvent);
    }

    /* Copy the poll state, masking out disabled events */
    EnumReq->PollEvents = (FCB->PollState & ~FCB->EventSelectDisabled);
    RtlCopyMemory( EnumReq->EventStatus,
                   FCB->PollStatus,
                   sizeof(EnumReq->EventStatus) );

    /* Disable the events that triggered the select until the reenabling function is called */
    FCB->EventSelectDisabled |= (FCB->PollState & FCB->EventSelectTriggers);

    return UnlockAndMaybeComplete( FCB, STATUS_SUCCESS, Irp, 0 );
}

Referenced by AfdDispatch().

AfdEventSelect()

NTSTATUS NTAPI AfdEventSelect	(	PDEVICE_OBJECT	DeviceObject,
		PIRP	Irp,
		PIO_STACK_LOCATION	IrpSp
	)

Definition at line 265 of file select.c.

                                           {
    PFILE_OBJECT FileObject = IrpSp->FileObject;
    NTSTATUS Status = STATUS_NO_MEMORY;
    PAFD_EVENT_SELECT_INFO EventSelectInfo =
        (PAFD_EVENT_SELECT_INFO)LockRequest( Irp, IrpSp, FALSE, NULL );
    PAFD_FCB FCB = FileObject->FsContext;

    UNREFERENCED_PARAMETER(DeviceObject);

    if( !SocketAcquireStateLock( FCB ) ) {
        return LostSocket( Irp );
    }

    if ( !EventSelectInfo ) {
         return UnlockAndMaybeComplete( FCB, STATUS_NO_MEMORY, Irp,
                                        0 );
    }
    AFD_DbgPrint(MID_TRACE,("Called (Event %p Triggers %u)\n",
                            EventSelectInfo->EventObject,
                            EventSelectInfo->Events));

    if( FCB->EventSelect ) ObDereferenceObject( FCB->EventSelect );
    FCB->EventSelect = NULL;

    if( EventSelectInfo->EventObject && EventSelectInfo->Events ) {
        Status = ObReferenceObjectByHandle( (PVOID)EventSelectInfo->
                                            EventObject,
                                            EVENT_ALL_ACCESS,
                                            *ExEventObjectType,
                                            UserMode,
                                            (PVOID *)&FCB->EventSelect,
                                            NULL );

        if( !NT_SUCCESS(Status) )
        {
            AFD_DbgPrint(MIN_TRACE,("Failed reference event (0x%x)\n", Status));
            FCB->EventSelect = NULL;
        }
        else
            FCB->EventSelectTriggers = EventSelectInfo->Events;
    } else {
        FCB->EventSelect = NULL;
        FCB->EventSelectTriggers = 0;
        Status = STATUS_SUCCESS;
    }

    if((FCB->EventSelect) &&
       (FCB->PollState & (FCB->EventSelectTriggers & ~FCB->EventSelectDisabled)))
    {
        AFD_DbgPrint(MID_TRACE,("Setting event %p\n", FCB->EventSelect));

        /* Set the application's event */
        KeSetEvent( FCB->EventSelect, IO_NETWORK_INCREMENT, FALSE );
    }

    AFD_DbgPrint(MID_TRACE,("Returning %x\n", Status));

    return UnlockAndMaybeComplete( FCB, Status, Irp,
                                   0 );
}

Referenced by AfdDispatch().

AfdGetConnectData()

NTSTATUS NTAPI AfdGetConnectData	(	PDEVICE_OBJECT	DeviceObject,
		PIRP	Irp,
		PIO_STACK_LOCATION	IrpSp
	)

Definition at line 127 of file connect.c.

{
    PFILE_OBJECT FileObject = IrpSp->FileObject;
    PAFD_FCB FCB = FileObject->FsContext;
    UINT BufferSize = IrpSp->Parameters.DeviceIoControl.OutputBufferLength;

    UNREFERENCED_PARAMETER(DeviceObject);

    if (!SocketAcquireStateLock(FCB)) return LostSocket(Irp);

    if (FCB->ConnectDataSize == 0)
    {
        AFD_DbgPrint(MIN_TRACE,("Invalid parameter\n"));
        return UnlockAndMaybeComplete(FCB, STATUS_INVALID_PARAMETER, Irp, 0);
    }

    ASSERT(FCB->ConnectData);

    if (FCB->FilledConnectData < BufferSize) BufferSize = FCB->FilledConnectData;

    RtlCopyMemory(Irp->UserBuffer,
                  FCB->ConnectData,
                  BufferSize);

    return UnlockAndMaybeComplete(FCB, STATUS_SUCCESS, Irp, BufferSize);
}

Referenced by AfdDispatch().

AfdGetConnectOptions()

NTSTATUS NTAPI AfdGetConnectOptions	(	PDEVICE_OBJECT	DeviceObject,
		PIRP	Irp,
		PIO_STACK_LOCATION	IrpSp
	)

Definition at line 15 of file connect.c.

{
    PFILE_OBJECT FileObject = IrpSp->FileObject;
    PAFD_FCB FCB = FileObject->FsContext;
    UINT BufferSize = IrpSp->Parameters.DeviceIoControl.OutputBufferLength;

    UNREFERENCED_PARAMETER(DeviceObject);

    if (!SocketAcquireStateLock(FCB)) return LostSocket(Irp);

    if (FCB->ConnectOptionsSize == 0)
    {
        AFD_DbgPrint(MIN_TRACE,("Invalid parameter\n"));
        return UnlockAndMaybeComplete(FCB, STATUS_INVALID_PARAMETER, Irp, 0);
    }

    ASSERT(FCB->ConnectOptions);

    if (FCB->FilledConnectOptions < BufferSize) BufferSize = FCB->FilledConnectOptions;

    RtlCopyMemory(Irp->UserBuffer,
                  FCB->ConnectOptions,
                  BufferSize);

    return UnlockAndMaybeComplete(FCB, STATUS_SUCCESS, Irp, BufferSize);
}

Referenced by AfdDispatch().

AfdGetContext()

NTSTATUS NTAPI AfdGetContext	(	PDEVICE_OBJECT	DeviceObject,
		PIRP	Irp,
		PIO_STACK_LOCATION	IrpSp
	)

Definition at line 14 of file context.c.

                                          {
    NTSTATUS Status = STATUS_INVALID_PARAMETER;
    PFILE_OBJECT FileObject = IrpSp->FileObject;
    PAFD_FCB FCB = FileObject->FsContext;
    UINT ContextSize = IrpSp->Parameters.DeviceIoControl.OutputBufferLength;

    UNREFERENCED_PARAMETER(DeviceObject);

    if( !SocketAcquireStateLock( FCB ) ) return LostSocket( Irp );

    if( FCB->ContextSize < ContextSize ) ContextSize = FCB->ContextSize;

    if( FCB->Context ) {
        RtlCopyMemory( Irp->UserBuffer,
                       FCB->Context,
                       ContextSize );
        Status = STATUS_SUCCESS;
    }

    AFD_DbgPrint(MID_TRACE,("Returning %x\n", Status));

    return UnlockAndMaybeComplete( FCB, Status, Irp, ContextSize );
}

Referenced by AfdDispatch().

AfdGetContextSize()

NTSTATUS NTAPI AfdGetContextSize	(	PDEVICE_OBJECT	DeviceObject,
		PIRP	Irp,
		PIO_STACK_LOCATION	IrpSp
	)

Definition at line 40 of file context.c.

{
    PFILE_OBJECT FileObject = IrpSp->FileObject;
    PAFD_FCB FCB = FileObject->FsContext;

    UNREFERENCED_PARAMETER(DeviceObject);

    if( !SocketAcquireStateLock( FCB ) ) return LostSocket( Irp );

    if (IrpSp->Parameters.DeviceIoControl.OutputBufferLength < sizeof(ULONG))
    {
        AFD_DbgPrint(MIN_TRACE,("Buffer too small\n"));
        return UnlockAndMaybeComplete(FCB, STATUS_BUFFER_TOO_SMALL, Irp, sizeof(ULONG));
    }

    RtlCopyMemory(Irp->UserBuffer,
                  &FCB->ContextSize,
                  sizeof(ULONG));

    return UnlockAndMaybeComplete(FCB, STATUS_SUCCESS, Irp, sizeof(ULONG));
}

Referenced by AfdDispatch().

AfdGetInfo()

NTSTATUS NTAPI AfdGetInfo	(	PDEVICE_OBJECT	DeviceObject,
		PIRP	Irp,
		PIO_STACK_LOCATION	IrpSp
	)

Definition at line 14 of file info.c.

                                       {
    NTSTATUS Status = STATUS_SUCCESS;
    PAFD_INFO InfoReq = LockRequest(Irp, IrpSp, TRUE, NULL);
    PFILE_OBJECT FileObject = IrpSp->FileObject;
    PAFD_FCB FCB = FileObject->FsContext;
    PLIST_ENTRY CurrentEntry;

    UNREFERENCED_PARAMETER(DeviceObject);

    AFD_DbgPrint(MID_TRACE,("Called %p %x\n", InfoReq,
                            InfoReq ? InfoReq->InformationClass : 0));

    if( !SocketAcquireStateLock( FCB ) ) return LostSocket( Irp );

    if (!InfoReq)
        return UnlockAndMaybeComplete(FCB, STATUS_NO_MEMORY, Irp, 0);

    _SEH2_TRY {
        switch( InfoReq->InformationClass ) {
        case AFD_INFO_RECEIVE_WINDOW_SIZE:
            InfoReq->Information.Ulong = FCB->Recv.Size;
            break;

        case AFD_INFO_SEND_WINDOW_SIZE:
            InfoReq->Information.Ulong = FCB->Send.Size;
            AFD_DbgPrint(MID_TRACE,("Send window size %u\n", FCB->Send.Size));
            break;

        case AFD_INFO_GROUP_ID_TYPE:
            InfoReq->Information.LargeInteger.u.HighPart = FCB->GroupType;
            InfoReq->Information.LargeInteger.u.LowPart = FCB->GroupID;
            AFD_DbgPrint(MID_TRACE, ("Group ID: %u Group Type: %u\n", FCB->GroupID, FCB->GroupType));
            break;

        case AFD_INFO_BLOCKING_MODE:
            InfoReq->Information.Boolean = FCB->NonBlocking;
            break;

    case AFD_INFO_INLINING_MODE:
        InfoReq->Information.Boolean = FCB->OobInline;
        break;

    case AFD_INFO_RECEIVE_CONTENT_SIZE:
        InfoReq->Information.Ulong = FCB->Recv.Content - FCB->Recv.BytesUsed;
        break;

        case AFD_INFO_SENDS_IN_PROGRESS:
            InfoReq->Information.Ulong = 0;

            /* Count the queued sends */
            CurrentEntry = FCB->PendingIrpList[FUNCTION_SEND].Flink;
            while (CurrentEntry != &FCB->PendingIrpList[FUNCTION_SEND])
            {
                 InfoReq->Information.Ulong++;
                 CurrentEntry = CurrentEntry->Flink;
            }

        /* This needs to count too because when this is dispatched
         * the user-mode IRP has already been completed and therefore
         * will NOT be in our pending IRP list. We count this as one send
         * outstanding although it could be multiple since we batch sends
         * when waiting for the in flight request to return, so this number
         * may not be accurate but it really doesn't matter that much since
         * it's more or less a zero/non-zero comparison to determine whether
         * we can shutdown the socket
         */
        if (FCB->SendIrp.InFlightRequest)
            InfoReq->Information.Ulong++;
        break;

        default:
            AFD_DbgPrint(MIN_TRACE,("Unknown info id %x\n",
                                    InfoReq->InformationClass));
            Status = STATUS_INVALID_PARAMETER;
            break;
        }
    } _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER) {
        AFD_DbgPrint(MIN_TRACE,("Exception executing GetInfo\n"));
        Status = STATUS_INVALID_PARAMETER;
    } _SEH2_END;

    AFD_DbgPrint(MID_TRACE,("Returning %x\n", Status));

    return UnlockAndMaybeComplete( FCB, Status, Irp, 0 );
}

Referenced by AfdDispatch().

AfdGetPeerName()

NTSTATUS NTAPI AfdGetPeerName	(	PDEVICE_OBJECT	DeviceObject,
		PIRP	Irp,
		PIO_STACK_LOCATION	IrpSp
	)

Definition at line 281 of file info.c.

                                           {
    NTSTATUS Status;
    PFILE_OBJECT FileObject = IrpSp->FileObject;
    PAFD_FCB FCB = FileObject->FsContext;

    UNREFERENCED_PARAMETER(DeviceObject);

    if( !SocketAcquireStateLock( FCB ) ) return LostSocket( Irp );

    if (FCB->RemoteAddress == NULL) {
        AFD_DbgPrint(MIN_TRACE,("Invalid parameter\n"));
        return UnlockAndMaybeComplete( FCB, STATUS_INVALID_PARAMETER, Irp, 0 );
    }

    if (IrpSp->Parameters.DeviceIoControl.OutputBufferLength >= TaLengthOfTransportAddress(FCB->RemoteAddress))
    {
        RtlCopyMemory(Irp->UserBuffer, FCB->RemoteAddress, TaLengthOfTransportAddress(FCB->RemoteAddress));
        Status = STATUS_SUCCESS;
    }
    else
    {
        AFD_DbgPrint(MIN_TRACE,("Buffer too small\n"));
        Status = STATUS_BUFFER_TOO_SMALL;
    }

    return UnlockAndMaybeComplete( FCB, Status, Irp, 0 );
}

Referenced by AfdDispatch().

AfdGetSockName()

NTSTATUS NTAPI AfdGetSockName	(	PDEVICE_OBJECT	DeviceObject,
		PIRP	Irp,
		PIO_STACK_LOCATION	IrpSp
	)

Definition at line 232 of file info.c.

                                           {
    NTSTATUS Status = STATUS_SUCCESS;
    PFILE_OBJECT FileObject = IrpSp->FileObject;
    PAFD_FCB FCB = FileObject->FsContext;
    PMDL Mdl = NULL;

    UNREFERENCED_PARAMETER(DeviceObject);
    ASSERT(Irp->MdlAddress == NULL);

    if( !SocketAcquireStateLock( FCB ) ) return LostSocket( Irp );

    if( FCB->AddressFile.Object == NULL && FCB->Connection.Object == NULL ) {
         return UnlockAndMaybeComplete( FCB, STATUS_INVALID_PARAMETER, Irp, 0 );
    }

    Mdl = IoAllocateMdl( Irp->UserBuffer,
                         IrpSp->Parameters.DeviceIoControl.OutputBufferLength,
                         FALSE,
                         FALSE,
                         NULL );

    if( Mdl != NULL ) {
        _SEH2_TRY {
            MmProbeAndLockPages( Mdl, Irp->RequestorMode, IoModifyAccess );
        } _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER) {
            AFD_DbgPrint(MIN_TRACE, ("MmProbeAndLockPages() failed.\n"));
            Status = _SEH2_GetExceptionCode();
        } _SEH2_END;

        if( NT_SUCCESS(Status) ) {
                Status = TdiQueryInformation( FCB->Connection.Object
                                                ? FCB->Connection.Object
                                                : FCB->AddressFile.Object,
                                              TDI_QUERY_ADDRESS_INFO,
                                              Mdl );
        }

        /* Check if MmProbeAndLockPages or TdiQueryInformation failed and
         * clean up Mdl */
        if (!NT_SUCCESS(Status) && Irp->MdlAddress != Mdl)
            IoFreeMdl(Mdl);
    } else
        Status = STATUS_INSUFFICIENT_RESOURCES;

    return UnlockAndMaybeComplete( FCB, Status, Irp, 0 );
}

Referenced by AfdDispatch().

AfdListenSocket()

NTSTATUS AfdListenSocket	(	PDEVICE_OBJECT	DeviceObject,
		PIRP	Irp,
		PIO_STACK_LOCATION	IrpSp
	)

Definition at line 225 of file listen.c.

                                                     {
    NTSTATUS Status = STATUS_SUCCESS;
    PFILE_OBJECT FileObject = IrpSp->FileObject;
    PAFD_FCB FCB = FileObject->FsContext;
    PAFD_LISTEN_DATA ListenReq;

    UNREFERENCED_PARAMETER(DeviceObject);

    AFD_DbgPrint(MID_TRACE,("Called on %p\n", FCB));

    if( !SocketAcquireStateLock( FCB ) ) return LostSocket( Irp );

    if( !(ListenReq = LockRequest( Irp, IrpSp, FALSE, NULL )) )
        return UnlockAndMaybeComplete( FCB, STATUS_NO_MEMORY, Irp,
                                       0 );

    if( FCB->State != SOCKET_STATE_BOUND ) {
        Status = STATUS_INVALID_PARAMETER;
        AFD_DbgPrint(MIN_TRACE,("Could not listen an unbound socket\n"));
        return UnlockAndMaybeComplete( FCB, Status, Irp, 0 );
    }

    FCB->DelayedAccept = ListenReq->UseDelayedAcceptance;

    AFD_DbgPrint(MID_TRACE,("ADDRESSFILE: %p\n", FCB->AddressFile.Handle));

    Status = WarmSocketForConnection( FCB );

    AFD_DbgPrint(MID_TRACE,("Status from warmsocket %x\n", Status));

    if( !NT_SUCCESS(Status) ) return UnlockAndMaybeComplete( FCB, Status, Irp, 0 );

    Status = TdiBuildNullConnectionInfo
        ( &FCB->ListenIrp.ConnectionCallInfo,
          FCB->LocalAddress->Address[0].AddressType );

    if (!NT_SUCCESS(Status)) return UnlockAndMaybeComplete(FCB, Status, Irp, 0);

    Status = TdiBuildNullConnectionInfo
        ( &FCB->ListenIrp.ConnectionReturnInfo,
          FCB->LocalAddress->Address[0].AddressType );

    if (!NT_SUCCESS(Status))
    {
        ExFreePoolWithTag(FCB->ListenIrp.ConnectionCallInfo,
                          TAG_AFD_TDI_CONNECTION_INFORMATION);

        FCB->ListenIrp.ConnectionCallInfo = NULL;
        return UnlockAndMaybeComplete(FCB, Status, Irp, 0);
    }

    FCB->State = SOCKET_STATE_LISTENING;

    Status = TdiListen( &FCB->ListenIrp.InFlightRequest,
                        FCB->Connection.Object,
                        &FCB->ListenIrp.ConnectionCallInfo,
                        &FCB->ListenIrp.ConnectionReturnInfo,
                        ListenComplete,
                        FCB );

    if( Status == STATUS_PENDING )
        Status = STATUS_SUCCESS;

    AFD_DbgPrint(MID_TRACE,("Returning %x\n", Status));
    return UnlockAndMaybeComplete( FCB, Status, Irp, 0 );
}

Referenced by AfdDispatch().

AfdPacketSocketReadData()

NTSTATUS NTAPI AfdPacketSocketReadData	(	PDEVICE_OBJECT	DeviceObject,
		PIRP	Irp,
		PIO_STACK_LOCATION	IrpSp
	)

Definition at line 703 of file read.c.

                                                   {
    NTSTATUS Status = STATUS_SUCCESS;
    PFILE_OBJECT FileObject = IrpSp->FileObject;
    PAFD_FCB FCB = FileObject->FsContext;
    PAFD_RECV_INFO_UDP RecvReq;
    PLIST_ENTRY ListEntry;
    PAFD_STORED_DATAGRAM DatagramRecv;
    KPROCESSOR_MODE LockMode;

    UNREFERENCED_PARAMETER(DeviceObject);

    AFD_DbgPrint(MID_TRACE,("Called on %p\n", FCB));

    if( !SocketAcquireStateLock( FCB ) ) return LostSocket( Irp );

    FCB->EventSelectDisabled &= ~AFD_EVENT_RECEIVE;

    /* Check that the socket is bound */
    if( FCB->State != SOCKET_STATE_BOUND )
    {
        AFD_DbgPrint(MIN_TRACE,("Invalid socket state\n"));
        return UnlockAndMaybeComplete(FCB, STATUS_INVALID_PARAMETER, Irp, 0);
    }

    if (FCB->TdiReceiveClosed)
    {
        AFD_DbgPrint(MIN_TRACE,("Receive closed\n"));
        return UnlockAndMaybeComplete(FCB, STATUS_FILE_CLOSED, Irp, 0);
    }

    if( !(RecvReq = LockRequest( Irp, IrpSp, FALSE, &LockMode )) )
        return UnlockAndMaybeComplete(FCB, STATUS_NO_MEMORY, Irp, 0);

    AFD_DbgPrint(MID_TRACE,("Recv flags %x\n", RecvReq->AfdFlags));

    RecvReq->BufferArray = LockBuffers( RecvReq->BufferArray,
                                        RecvReq->BufferCount,
                                        RecvReq->Address,
                                        RecvReq->AddressLength,
                                        TRUE, TRUE, LockMode );

    if( !RecvReq->BufferArray ) { /* access violation in userspace */
        return UnlockAndMaybeComplete(FCB, STATUS_ACCESS_VIOLATION, Irp, 0);
    }

    if (!IsListEmpty(&FCB->DatagramList))
    {
        ListEntry = RemoveHeadList(&FCB->DatagramList);
        DatagramRecv = CONTAINING_RECORD(ListEntry, AFD_STORED_DATAGRAM, ListEntry);
        Status = SatisfyPacketRecvRequest(FCB, Irp, DatagramRecv,
                                          (PUINT)&Irp->IoStatus.Information);

        if (RecvReq->TdiFlags & TDI_RECEIVE_PEEK)
        {
            InsertHeadList(&FCB->DatagramList,
                           &DatagramRecv->ListEntry);
        }

        if (!IsListEmpty(&FCB->DatagramList))
        {
            FCB->PollState |= AFD_EVENT_RECEIVE;
            FCB->PollStatus[FD_READ_BIT] = STATUS_SUCCESS;
            PollReeval( FCB->DeviceExt, FCB->FileObject );
        }
        else
            FCB->PollState &= ~AFD_EVENT_RECEIVE;

        UnlockBuffers(RecvReq->BufferArray, RecvReq->BufferCount, TRUE);

        return UnlockAndMaybeComplete(FCB, Status, Irp, Irp->IoStatus.Information);
    }
    else if (!(RecvReq->AfdFlags & AFD_OVERLAPPED) &&
            ((RecvReq->AfdFlags & AFD_IMMEDIATE) || (FCB->NonBlocking)))
    {
        AFD_DbgPrint(MID_TRACE,("Nonblocking\n"));
        Status = STATUS_CANT_WAIT;
        FCB->PollState &= ~AFD_EVENT_RECEIVE;
        UnlockBuffers( RecvReq->BufferArray, RecvReq->BufferCount, TRUE );
        return UnlockAndMaybeComplete( FCB, Status, Irp, 0 );
    }
    else
    {
        FCB->PollState &= ~AFD_EVENT_RECEIVE;
        return LeaveIrpUntilLater( FCB, Irp, FUNCTION_RECV );
    }
}

Referenced by AfdDispatch().

AfdPacketSocketWriteData()

NTSTATUS NTAPI AfdPacketSocketWriteData	(	PDEVICE_OBJECT	DeviceObject,
		PIRP	Irp,
		PIO_STACK_LOCATION	IrpSp
	)

Definition at line 564 of file write.c.

                                                   {
    NTSTATUS Status = STATUS_SUCCESS;
    PTDI_CONNECTION_INFORMATION TargetAddress;
    PFILE_OBJECT FileObject = IrpSp->FileObject;
    PAFD_FCB FCB = FileObject->FsContext;
    PAFD_SEND_INFO_UDP SendReq;
    KPROCESSOR_MODE LockMode;

    UNREFERENCED_PARAMETER(DeviceObject);

    AFD_DbgPrint(MID_TRACE,("Called on %p\n", FCB));

    if( !SocketAcquireStateLock( FCB ) ) return LostSocket( Irp );

    FCB->EventSelectDisabled &= ~AFD_EVENT_SEND;

    /* Check that the socket is bound */
    if( FCB->State != SOCKET_STATE_BOUND &&
        FCB->State != SOCKET_STATE_CREATED)
    {
        AFD_DbgPrint(MIN_TRACE,("Invalid socket state\n"));
        return UnlockAndMaybeComplete(FCB, STATUS_INVALID_PARAMETER, Irp, 0);
    }

    if (FCB->SendClosed)
    {
        AFD_DbgPrint(MIN_TRACE,("No more sends\n"));
        return UnlockAndMaybeComplete(FCB, STATUS_FILE_CLOSED, Irp, 0);
    }

    if( !(SendReq = LockRequest( Irp, IrpSp, FALSE, &LockMode )) )
        return UnlockAndMaybeComplete(FCB, STATUS_NO_MEMORY, Irp, 0);

    if (FCB->State == SOCKET_STATE_CREATED)
    {
        if (FCB->LocalAddress)
        {
            ExFreePoolWithTag(FCB->LocalAddress, TAG_AFD_TRANSPORT_ADDRESS);
        }

        FCB->LocalAddress =
        TaBuildNullTransportAddress( ((PTRANSPORT_ADDRESS)SendReq->TdiConnection.RemoteAddress)->
                                      Address[0].AddressType );

        if( FCB->LocalAddress ) {
            Status = WarmSocketForBind( FCB, AFD_SHARE_WILDCARD );

            if( NT_SUCCESS(Status) )
                FCB->State = SOCKET_STATE_BOUND;
            else
                return UnlockAndMaybeComplete( FCB, Status, Irp, 0 );
        } else
            return UnlockAndMaybeComplete
            ( FCB, STATUS_NO_MEMORY, Irp, 0 );
    }

    SendReq->BufferArray = LockBuffers( SendReq->BufferArray,
                                        SendReq->BufferCount,
                                        NULL, NULL,
                                        FALSE, FALSE, LockMode );

    if( !SendReq->BufferArray )
        return UnlockAndMaybeComplete( FCB, STATUS_ACCESS_VIOLATION,
                                       Irp, 0 );

    AFD_DbgPrint
        (MID_TRACE,("RemoteAddress #%d Type %u\n",
                    ((PTRANSPORT_ADDRESS)SendReq->TdiConnection.RemoteAddress)->
                    TAAddressCount,
                    ((PTRANSPORT_ADDRESS)SendReq->TdiConnection.RemoteAddress)->
                    Address[0].AddressType));

    Status = TdiBuildConnectionInfo( &TargetAddress,
                            ((PTRANSPORT_ADDRESS)SendReq->TdiConnection.RemoteAddress) );

    /* Check the size of the Address given ... */

    if( NT_SUCCESS(Status) ) {
        FCB->PollState &= ~AFD_EVENT_SEND;

        Status = QueueUserModeIrp(FCB, Irp, FUNCTION_SEND);
        if (Status == STATUS_PENDING)
        {
            Status = TdiSendDatagram(&FCB->SendIrp.InFlightRequest,
                                     FCB->AddressFile.Object,
                                     SendReq->BufferArray[0].buf,
                                     SendReq->BufferArray[0].len,
                                     TargetAddress,
                                     PacketSocketSendComplete,
                                     FCB);
            if (Status != STATUS_PENDING)
            {
                NT_VERIFY(RemoveHeadList(&FCB->PendingIrpList[FUNCTION_SEND]) == &Irp->Tail.Overlay.ListEntry);
                Irp->IoStatus.Status = Status;
                Irp->IoStatus.Information = 0;
                (void)IoSetCancelRoutine(Irp, NULL);
                UnlockBuffers(SendReq->BufferArray, SendReq->BufferCount, FALSE);
                UnlockRequest(Irp, IoGetCurrentIrpStackLocation(Irp));
                IoCompleteRequest(Irp, IO_NETWORK_INCREMENT);
            }
        }

        ExFreePoolWithTag(TargetAddress, TAG_AFD_TDI_CONNECTION_INFORMATION);

        SocketStateUnlock(FCB);

        return STATUS_PENDING;
    }
    else
    {
        UnlockBuffers(SendReq->BufferArray, SendReq->BufferCount, FALSE);
        return UnlockAndMaybeComplete( FCB, Status, Irp, 0 );
    }
}

Referenced by AfdDispatch().

AfdSelect()

NTSTATUS NTAPI AfdSelect	(	PDEVICE_OBJECT	DeviceObject,
		PIRP	Irp,
		PIO_STACK_LOCATION	IrpSp
	)

Definition at line 165 of file select.c.

                                      {
    NTSTATUS Status = STATUS_NO_MEMORY;
    PAFD_FCB FCB;
    PFILE_OBJECT FileObject;
    PAFD_POLL_INFO PollReq = Irp->AssociatedIrp.SystemBuffer;
    PAFD_DEVICE_EXTENSION DeviceExt = DeviceObject->DeviceExtension;
    KIRQL OldIrql;
    UINT i, Signalled = 0;
    ULONG Exclusive = PollReq->Exclusive;

    UNREFERENCED_PARAMETER(IrpSp);

    AFD_DbgPrint(MID_TRACE,("Called (HandleCount %u Timeout %d)\n",
                            PollReq->HandleCount,
                            (INT)(PollReq->Timeout.QuadPart)));

    SET_AFD_HANDLES(PollReq,
                    LockHandles( PollReq->Handles, PollReq->HandleCount ));

    if( !AFD_HANDLES(PollReq) ) {
        Irp->IoStatus.Status = STATUS_NO_MEMORY;
        Irp->IoStatus.Information = 0;
        IoCompleteRequest( Irp, IO_NETWORK_INCREMENT );
        return STATUS_NO_MEMORY;
    }

    if( Exclusive ) {
        for( i = 0; i < PollReq->HandleCount; i++ ) {
            if( !AFD_HANDLES(PollReq)[i].Handle ) continue;

            KillSelectsForFCB( DeviceExt,
                               (PFILE_OBJECT)AFD_HANDLES(PollReq)[i].Handle,
                               TRUE );
        }
    }

    KeAcquireSpinLock( &DeviceExt->Lock, &OldIrql );

    for( i = 0; i < PollReq->HandleCount; i++ ) {
        if( !AFD_HANDLES(PollReq)[i].Handle ) continue;

        FileObject = (PFILE_OBJECT)AFD_HANDLES(PollReq)[i].Handle;
        FCB = FileObject->FsContext;

        AFD_DbgPrint(MID_TRACE, ("AFD: Select Events: "));
        PrintEvents( PollReq->Handles[i].Events );
        AFD_DbgPrint(MID_TRACE,("\n"));

        PollReq->Handles[i].Status =
            PollReq->Handles[i].Events & FCB->PollState;
        if( PollReq->Handles[i].Status ) {
            AFD_DbgPrint(MID_TRACE,("Signalling %p with %x\n",
                                    FCB, FCB->PollState));
            Signalled++;
        }
    }

    if( Signalled ) {
        Status = STATUS_SUCCESS;
        Irp->IoStatus.Status = Status;
        SignalSocket( NULL, Irp, PollReq, Status );
    } else {

       PAFD_ACTIVE_POLL Poll = NULL;

       Poll = ExAllocatePoolWithTag(NonPagedPool,
                                    sizeof(AFD_ACTIVE_POLL),
                                    TAG_AFD_ACTIVE_POLL);

       if (Poll){
          Poll->Irp = Irp;
          Poll->DeviceExt = DeviceExt;
          Poll->Exclusive = Exclusive;

          KeInitializeTimerEx( &Poll->Timer, NotificationTimer );

          KeInitializeDpc( (PRKDPC)&Poll->TimeoutDpc, SelectTimeout, Poll );

          InsertTailList( &DeviceExt->Polls, &Poll->ListEntry );

          KeSetTimer( &Poll->Timer, PollReq->Timeout, &Poll->TimeoutDpc );

          Status = STATUS_PENDING;
          IoMarkIrpPending( Irp );
          (void)IoSetCancelRoutine(Irp, AfdCancelHandler);
       } else {
          AFD_DbgPrint(MAX_TRACE, ("FIXME: do something with the IRP!\n"));
          Status = STATUS_NO_MEMORY;
       }
    }

    KeReleaseSpinLock( &DeviceExt->Lock, OldIrql );

    AFD_DbgPrint(MID_TRACE,("Returning %x\n", Status));

    return Status;
}

Referenced by AfdDispatch().

AfdSetConnectData()

NTSTATUS NTAPI AfdSetConnectData	(	PDEVICE_OBJECT	DeviceObject,
		PIRP	Irp,
		PIO_STACK_LOCATION	IrpSp
	)

Definition at line 157 of file connect.c.

{
    PFILE_OBJECT FileObject = IrpSp->FileObject;
    PAFD_FCB FCB = FileObject->FsContext;
    PVOID ConnectData = LockRequest(Irp, IrpSp, FALSE, NULL);
    UINT ConnectDataSize = IrpSp->Parameters.DeviceIoControl.InputBufferLength;

    UNREFERENCED_PARAMETER(DeviceObject);

    if (!SocketAcquireStateLock(FCB)) return LostSocket(Irp);

    if (!ConnectData)
        return UnlockAndMaybeComplete(FCB, STATUS_NO_MEMORY, Irp, 0);

    if (FCB->ConnectData)
    {
        ExFreePoolWithTag(FCB->ConnectData, TAG_AFD_CONNECT_DATA);
        FCB->ConnectData = NULL;
        FCB->ConnectDataSize = 0;
        FCB->FilledConnectData = 0;
    }

    FCB->ConnectData = ExAllocatePoolWithTag(PagedPool,
                                             ConnectDataSize,
                                             TAG_AFD_CONNECT_DATA);

    if (!FCB->ConnectData) return UnlockAndMaybeComplete(FCB, STATUS_NO_MEMORY, Irp, 0);

    RtlCopyMemory(FCB->ConnectData,
                  ConnectData,
                  ConnectDataSize);

    FCB->ConnectDataSize = ConnectDataSize;

    return UnlockAndMaybeComplete(FCB, STATUS_SUCCESS, Irp, 0);
}

Referenced by AfdDispatch().

AfdSetConnectDataSize()

NTSTATUS NTAPI AfdSetConnectDataSize	(	PDEVICE_OBJECT	DeviceObject,
		PIRP	Irp,
		PIO_STACK_LOCATION	IrpSp
	)

Definition at line 197 of file connect.c.

{
    PFILE_OBJECT FileObject = IrpSp->FileObject;
    PAFD_FCB FCB = FileObject->FsContext;
    PUINT ConnectDataSize = LockRequest(Irp, IrpSp, FALSE, NULL);
    UINT BufferSize = IrpSp->Parameters.DeviceIoControl.InputBufferLength;

    UNREFERENCED_PARAMETER(DeviceObject);

    if (!SocketAcquireStateLock(FCB)) return LostSocket(Irp);

    if (!ConnectDataSize)
        return UnlockAndMaybeComplete(FCB, STATUS_NO_MEMORY, Irp, 0);

    if (BufferSize < sizeof(UINT))
    {
        AFD_DbgPrint(MIN_TRACE,("Buffer too small\n"));
        return UnlockAndMaybeComplete(FCB, STATUS_BUFFER_TOO_SMALL, Irp, 0);
    }

    if (FCB->ConnectData)
    {
        ExFreePoolWithTag(FCB->ConnectData, TAG_AFD_CONNECT_DATA);
        FCB->ConnectDataSize = 0;
        FCB->FilledConnectData = 0;
    }

    FCB->ConnectData = ExAllocatePoolWithTag(PagedPool,
                                             *ConnectDataSize,
                                             TAG_AFD_CONNECT_DATA);

    if (!FCB->ConnectData) return UnlockAndMaybeComplete(FCB, STATUS_NO_MEMORY, Irp, 0);

    FCB->ConnectDataSize = *ConnectDataSize;

    return UnlockAndMaybeComplete(FCB, STATUS_SUCCESS, Irp, 0);
}

Referenced by AfdDispatch().

AfdSetConnectOptions()

NTSTATUS NTAPI AfdSetConnectOptions	(	PDEVICE_OBJECT	DeviceObject,
		PIRP	Irp,
		PIO_STACK_LOCATION	IrpSp
	)

Definition at line 45 of file connect.c.

{
    PFILE_OBJECT FileObject = IrpSp->FileObject;
    PAFD_FCB FCB = FileObject->FsContext;
    PVOID ConnectOptions = LockRequest(Irp, IrpSp, FALSE, NULL);
    UINT ConnectOptionsSize = IrpSp->Parameters.DeviceIoControl.InputBufferLength;

    UNREFERENCED_PARAMETER(DeviceObject);

    if (!SocketAcquireStateLock(FCB)) return LostSocket(Irp);

    if (!ConnectOptions)
        return UnlockAndMaybeComplete(FCB, STATUS_NO_MEMORY, Irp, 0);

    if (FCB->ConnectOptions)
    {
        ExFreePoolWithTag(FCB->ConnectOptions, TAG_AFD_CONNECT_OPTIONS);
        FCB->ConnectOptions = NULL;
        FCB->ConnectOptionsSize = 0;
        FCB->FilledConnectOptions = 0;
    }

    FCB->ConnectOptions = ExAllocatePoolWithTag(PagedPool,
                                                ConnectOptionsSize,
                                                TAG_AFD_CONNECT_OPTIONS);

    if (!FCB->ConnectOptions)
        return UnlockAndMaybeComplete(FCB, STATUS_NO_MEMORY, Irp, 0);

    RtlCopyMemory(FCB->ConnectOptions,
                  ConnectOptions,
                  ConnectOptionsSize);

    FCB->ConnectOptionsSize = ConnectOptionsSize;

    return UnlockAndMaybeComplete(FCB, STATUS_SUCCESS, Irp, 0);
}

Referenced by AfdDispatch().

AfdSetConnectOptionsSize()

NTSTATUS NTAPI AfdSetConnectOptionsSize	(	PDEVICE_OBJECT	DeviceObject,
		PIRP	Irp,
		PIO_STACK_LOCATION	IrpSp
	)

Definition at line 86 of file connect.c.

{
    PFILE_OBJECT FileObject = IrpSp->FileObject;
    PAFD_FCB FCB = FileObject->FsContext;
    PUINT ConnectOptionsSize = LockRequest(Irp, IrpSp, FALSE, NULL);
    UINT BufferSize = IrpSp->Parameters.DeviceIoControl.InputBufferLength;

    UNREFERENCED_PARAMETER(DeviceObject);

    if (!SocketAcquireStateLock(FCB)) return LostSocket(Irp);

    if (!ConnectOptionsSize)
        return UnlockAndMaybeComplete(FCB, STATUS_NO_MEMORY, Irp, 0);

    if (BufferSize < sizeof(UINT))
    {
        AFD_DbgPrint(MIN_TRACE,("Buffer too small\n"));
        return UnlockAndMaybeComplete(FCB, STATUS_BUFFER_TOO_SMALL, Irp, 0);
    }

    if (FCB->ConnectOptions)
    {
        ExFreePoolWithTag(FCB->ConnectOptions, TAG_AFD_CONNECT_OPTIONS);
        FCB->ConnectOptionsSize = 0;
        FCB->FilledConnectOptions = 0;
    }

    FCB->ConnectOptions = ExAllocatePoolWithTag(PagedPool,
                                                *ConnectOptionsSize,
                                                TAG_AFD_CONNECT_OPTIONS);

    if (!FCB->ConnectOptions) return UnlockAndMaybeComplete(FCB, STATUS_NO_MEMORY, Irp, 0);

    FCB->ConnectOptionsSize = *ConnectOptionsSize;

    return UnlockAndMaybeComplete(FCB, STATUS_SUCCESS, Irp, 0);
}

Referenced by AfdDispatch().

AfdSetContext()

NTSTATUS NTAPI AfdSetContext	(	PDEVICE_OBJECT	DeviceObject,
		PIRP	Irp,
		PIO_STACK_LOCATION	IrpSp
	)

Definition at line 64 of file context.c.

                                          {
    PFILE_OBJECT FileObject = IrpSp->FileObject;
    PAFD_FCB FCB = FileObject->FsContext;
    PVOID Context = LockRequest(Irp, IrpSp, FALSE, NULL);

    UNREFERENCED_PARAMETER(DeviceObject);

    if( !SocketAcquireStateLock( FCB ) ) return LostSocket( Irp );

    if (!Context)
        return UnlockAndMaybeComplete(FCB, STATUS_NO_MEMORY, Irp, 0);

    if( FCB->Context ) {
        ExFreePoolWithTag(FCB->Context, TAG_AFD_SOCKET_CONTEXT);
        FCB->ContextSize = 0;
    }

    FCB->Context = ExAllocatePoolWithTag(PagedPool,
                                         IrpSp->Parameters.DeviceIoControl.InputBufferLength,
                                         TAG_AFD_SOCKET_CONTEXT);

    if( !FCB->Context ) return UnlockAndMaybeComplete( FCB, STATUS_NO_MEMORY, Irp, 0 );

    FCB->ContextSize = IrpSp->Parameters.DeviceIoControl.InputBufferLength;

    RtlCopyMemory( FCB->Context,
                   Context,
                   FCB->ContextSize );

    return UnlockAndMaybeComplete( FCB, STATUS_SUCCESS, Irp, 0 );
}

Referenced by AfdDispatch().

AfdSetInfo()

NTSTATUS NTAPI AfdSetInfo	(	PDEVICE_OBJECT	DeviceObject,
		PIRP	Irp,
		PIO_STACK_LOCATION	IrpSp
	)

Definition at line 102 of file info.c.

                                       {
    NTSTATUS Status = STATUS_SUCCESS;
    PAFD_INFO InfoReq = LockRequest(Irp, IrpSp, FALSE, NULL);
    PFILE_OBJECT FileObject = IrpSp->FileObject;
    PAFD_FCB FCB = FileObject->FsContext;
    PCHAR NewBuffer;

    UNREFERENCED_PARAMETER(DeviceObject);

    if (!SocketAcquireStateLock(FCB)) return LostSocket(Irp);

    if (!InfoReq)
        return UnlockAndMaybeComplete(FCB, STATUS_NO_MEMORY, Irp, 0);

    _SEH2_TRY {
        switch (InfoReq->InformationClass) {
            case AFD_INFO_BLOCKING_MODE:
                AFD_DbgPrint(MID_TRACE,("Blocking mode set to %u\n", InfoReq->Information.Boolean));
                FCB->NonBlocking = InfoReq->Information.Boolean;
                break;
            case AFD_INFO_INLINING_MODE:
                FCB->OobInline = InfoReq->Information.Boolean;
                break;
            case AFD_INFO_RECEIVE_WINDOW_SIZE:
                if (FCB->State == SOCKET_STATE_CONNECTED ||
                    FCB->Flags & AFD_ENDPOINT_CONNECTIONLESS)
                {
                    /* FIXME: likely not right, check tcpip.sys for TDI_QUERY_MAX_DATAGRAM_INFO */
                    if (InfoReq->Information.Ulong > 0 && InfoReq->Information.Ulong < 0xFFFF &&
                        InfoReq->Information.Ulong != FCB->Recv.Size)
                    {
                        NewBuffer = ExAllocatePoolWithTag(PagedPool,
                                                          InfoReq->Information.Ulong,
                                                          TAG_AFD_DATA_BUFFER);

                        if (NewBuffer)
                        {
                            if (FCB->Recv.Content > InfoReq->Information.Ulong)
                                FCB->Recv.Content = InfoReq->Information.Ulong;

                            if (FCB->Recv.Window)
                            {
                                RtlCopyMemory(NewBuffer,
                                              FCB->Recv.Window,
                                              FCB->Recv.Content);

                                ExFreePoolWithTag(FCB->Recv.Window, TAG_AFD_DATA_BUFFER);
                            }

                            FCB->Recv.Size = InfoReq->Information.Ulong;
                            FCB->Recv.Window = NewBuffer;

                            Status = STATUS_SUCCESS;
                        }
                        else
                        {
                            Status = STATUS_NO_MEMORY;
                        }
                    }
                    else
                    {
                        Status = STATUS_SUCCESS;
                    }
                }
                else
                {
                    Status = STATUS_INVALID_PARAMETER;
                }
                break;
            case AFD_INFO_SEND_WINDOW_SIZE:
                if (FCB->State == SOCKET_STATE_CONNECTED ||
                    FCB->Flags & AFD_ENDPOINT_CONNECTIONLESS)
                {
                    if (InfoReq->Information.Ulong > 0 && InfoReq->Information.Ulong < 0xFFFF &&
                        InfoReq->Information.Ulong != FCB->Send.Size)
                    {
                        NewBuffer = ExAllocatePoolWithTag(PagedPool,
                                                          InfoReq->Information.Ulong,
                                                          TAG_AFD_DATA_BUFFER);

                        if (NewBuffer)
                        {
                            if (FCB->Send.BytesUsed > InfoReq->Information.Ulong)
                                FCB->Send.BytesUsed = InfoReq->Information.Ulong;

                            if (FCB->Send.Window)
                            {
                                RtlCopyMemory(NewBuffer,
                                              FCB->Send.Window,
                                              FCB->Send.BytesUsed);

                                ExFreePoolWithTag(FCB->Send.Window, TAG_AFD_DATA_BUFFER);
                            }

                            FCB->Send.Size = InfoReq->Information.Ulong;
                            FCB->Send.Window = NewBuffer;

                            Status = STATUS_SUCCESS;
                        }
                        else
                        {
                            Status = STATUS_NO_MEMORY;
                        }
                    }
                    else
                    {
                        Status = STATUS_SUCCESS;
                    }
                }
                else
                {
                    Status = STATUS_INVALID_PARAMETER;
                }
                break;
            default:
                AFD_DbgPrint(MIN_TRACE,("Unknown request %u\n", InfoReq->InformationClass));
                break;
        }
    } _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER) {
        AFD_DbgPrint(MIN_TRACE,("Exception executing SetInfo\n"));
        Status = STATUS_INVALID_PARAMETER;
    } _SEH2_END;

    AFD_DbgPrint(MID_TRACE,("Returning %x\n", Status));

    return UnlockAndMaybeComplete(FCB, Status, Irp, 0);
}

Referenced by AfdDispatch().

AfdStreamSocketConnect()

NTSTATUS NTAPI AfdStreamSocketConnect	(	PDEVICE_OBJECT	DeviceObject,
		PIRP	Irp,
		PIO_STACK_LOCATION	IrpSp
	)

Definition at line 431 of file connect.c.

                                                 {
    NTSTATUS Status = STATUS_INVALID_PARAMETER;
    PFILE_OBJECT FileObject = IrpSp->FileObject;
    PAFD_FCB FCB = FileObject->FsContext;
    PAFD_CONNECT_INFO ConnectReq;
    AFD_DbgPrint(MID_TRACE,("Called on %p\n", FCB));

    UNREFERENCED_PARAMETER(DeviceObject);

    if( !SocketAcquireStateLock( FCB ) ) return LostSocket( Irp );
    if( !(ConnectReq = LockRequest( Irp, IrpSp, FALSE, NULL )) )
        return UnlockAndMaybeComplete( FCB, STATUS_NO_MEMORY, Irp,
                                       0 );

    AFD_DbgPrint(MID_TRACE,("Connect request:\n"));
#if 0
    OskitDumpBuffer
        ( (PCHAR)ConnectReq,
          IrpSp->Parameters.DeviceIoControl.InputBufferLength );
#endif

   if( FCB->Flags & AFD_ENDPOINT_CONNECTIONLESS )
   {
        if (FCB->RemoteAddress)
        {
            ExFreePoolWithTag(FCB->RemoteAddress, TAG_AFD_TRANSPORT_ADDRESS);
        }

        FCB->RemoteAddress =
            TaCopyTransportAddress( &ConnectReq->RemoteAddress );

        if( !FCB->RemoteAddress )
            Status = STATUS_NO_MEMORY;
        else
            Status = STATUS_SUCCESS;

        return UnlockAndMaybeComplete( FCB, Status, Irp, 0 );
   }

    switch( FCB->State ) {
    case SOCKET_STATE_CONNECTED:
        Status = STATUS_SUCCESS;
        break;

    case SOCKET_STATE_CONNECTING:
        return LeaveIrpUntilLater( FCB, Irp, FUNCTION_CONNECT );

    case SOCKET_STATE_CREATED:
        if (FCB->LocalAddress)
        {
            ExFreePoolWithTag(FCB->LocalAddress, TAG_AFD_TRANSPORT_ADDRESS);
        }

        FCB->LocalAddress =
            TaBuildNullTransportAddress( ConnectReq->RemoteAddress.Address[0].AddressType );

        if( FCB->LocalAddress ) {
            Status = WarmSocketForBind( FCB, AFD_SHARE_WILDCARD );

            if( NT_SUCCESS(Status) )
                FCB->State = SOCKET_STATE_BOUND;
            else
                return UnlockAndMaybeComplete( FCB, Status, Irp, 0 );
        } else
            return UnlockAndMaybeComplete
                ( FCB, STATUS_NO_MEMORY, Irp, 0 );

    /* Drop through to SOCKET_STATE_BOUND */

    case SOCKET_STATE_BOUND:
        if (FCB->RemoteAddress)
        {
            ExFreePoolWithTag(FCB->RemoteAddress, TAG_AFD_TRANSPORT_ADDRESS);
        }

        FCB->RemoteAddress =
            TaCopyTransportAddress( &ConnectReq->RemoteAddress );

        if( !FCB->RemoteAddress ) {
            Status = STATUS_NO_MEMORY;
            break;
        }

        Status = WarmSocketForConnection( FCB );

        if( !NT_SUCCESS(Status) )
            break;

        if (FCB->ConnectReturnInfo)
        {
            ExFreePoolWithTag(FCB->ConnectReturnInfo, TAG_AFD_TDI_CONNECTION_INFORMATION);
        }

        Status = TdiBuildConnectionInfo
            ( &FCB->ConnectReturnInfo,
              &ConnectReq->RemoteAddress );

        if( NT_SUCCESS(Status) )
        {
            if (FCB->ConnectCallInfo)
            {
                ExFreePoolWithTag(FCB->ConnectCallInfo, TAG_AFD_TDI_CONNECTION_INFORMATION);
            }

            Status = TdiBuildConnectionInfo(&FCB->ConnectCallInfo,
                                              &ConnectReq->RemoteAddress);
        }
        else break;


        if( NT_SUCCESS(Status) ) {
            FCB->ConnectCallInfo->UserData = FCB->ConnectData;
            FCB->ConnectCallInfo->UserDataLength = FCB->ConnectDataSize;
            FCB->ConnectCallInfo->Options = FCB->ConnectOptions;
            FCB->ConnectCallInfo->OptionsLength = FCB->ConnectOptionsSize;

        FCB->State = SOCKET_STATE_CONNECTING;

        AFD_DbgPrint(MID_TRACE,("Queueing IRP %p\n", Irp));
        Status = QueueUserModeIrp( FCB, Irp, FUNCTION_CONNECT );
        if (Status == STATUS_PENDING)
        {
            Status = TdiConnect( &FCB->ConnectIrp.InFlightRequest,
                                FCB->Connection.Object,
                                FCB->ConnectCallInfo,
                                FCB->ConnectReturnInfo,
                                StreamSocketConnectComplete,
                                FCB );
        }

        if (Status != STATUS_PENDING)
            FCB->State = SOCKET_STATE_BOUND;

        SocketStateUnlock(FCB);

            return Status;
        }
        break;

    default:
        AFD_DbgPrint(MIN_TRACE,("Inappropriate socket state %u for connect\n",
                                FCB->State));
        break;
    }

    return UnlockAndMaybeComplete( FCB, Status, Irp, 0 );
}

Referenced by AfdDispatch().

AfdWaitForListen()

NTSTATUS AfdWaitForListen	(	PDEVICE_OBJECT	DeviceObject,
		PIRP	Irp,
		PIO_STACK_LOCATION	IrpSp
	)

Definition at line 293 of file listen.c.

                                                      {
    PFILE_OBJECT FileObject = IrpSp->FileObject;
    PAFD_FCB FCB = FileObject->FsContext;
    NTSTATUS Status;

    UNREFERENCED_PARAMETER(DeviceObject);

    AFD_DbgPrint(MID_TRACE,("Called\n"));

    if( !SocketAcquireStateLock( FCB ) ) return LostSocket( Irp );

    if( !IsListEmpty( &FCB->PendingConnections ) ) {
        PLIST_ENTRY PendingConn = FCB->PendingConnections.Flink;

        /* We have a pending connection ... complete this irp right away */
        Status = SatisfyPreAccept
            ( Irp,
              CONTAINING_RECORD
              ( PendingConn, AFD_TDI_OBJECT_QELT, ListEntry ) );

        AFD_DbgPrint(MID_TRACE,("Completed a wait for accept\n"));

        if ( !IsListEmpty( &FCB->PendingConnections ) )
        {
             FCB->PollState |= AFD_EVENT_ACCEPT;
             FCB->PollStatus[FD_ACCEPT_BIT] = STATUS_SUCCESS;
             PollReeval( FCB->DeviceExt, FCB->FileObject );
        } else
             FCB->PollState &= ~AFD_EVENT_ACCEPT;

        SocketStateUnlock( FCB );
        return Status;
    } else if (FCB->NonBlocking) {
        AFD_DbgPrint(MIN_TRACE,("No connection ready on a non-blocking socket\n"));

        return UnlockAndMaybeComplete(FCB, STATUS_CANT_WAIT, Irp, 0);
    } else {
        AFD_DbgPrint(MID_TRACE,("Holding\n"));

        return LeaveIrpUntilLater( FCB, Irp, FUNCTION_PREACCEPT );
    }
}

Referenced by AfdDispatch().

CheckUnlockExtraBuffers()

BOOLEAN CheckUnlockExtraBuffers	(	PAFD_FCB	FCB,