reactos/lib/drivers/ip/transport/tcp/tcp.c

   1 /*
   2  * COPYRIGHT:   See COPYING in the top level directory
   3  * PROJECT:     ReactOS TCP/IP protocol driver
   4  * FILE:        transport/tcp/tcp.c
   5  * PURPOSE:     Transmission Control Protocol
   6  * PROGRAMMERS: Casper S. Hornstrup (chorns@users.sourceforge.net)
   7  *              Art Yerkes (arty@users.sf.net)
   8  * REVISIONS:
   9  *   CSH 01/08-2000  Created
  10  *   arty 12/21/2004 Added accept
  11  */
  12
  13 #include "precomp.h"
  14
  15 LONG TCP_IPIdentification = 0;
  16 static BOOLEAN TCPInitialized = FALSE;
  17 static NPAGED_LOOKASIDE_LIST TCPSegmentList;
  18 PORT_SET TCPPorts;
  19 CLIENT_DATA ClientInfo;
  20
  21 VOID HandleSignalledConnection(PCONNECTION_ENDPOINT Connection)
  22 {
  23         PTDI_BUCKET Bucket;
  24         PLIST_ENTRY Entry;
  25         NTSTATUS Status;
  26         PIRP Irp;
  27         PMDL Mdl;
  28         KIRQL OldIrql;
  29         PTCP_COMPLETION_ROUTINE Complete;
  30
  31         if (ClientInfo.Unlocked)
  32             LockObjectAtDpcLevel(Connection);
  33
  34         TI_DbgPrint(MID_TRACE,("Handling signalled state on %x (%x)\n",
  35                                Connection, Connection->SocketContext));
  36
  37         /* Things that can happen when we try the initial connection */
  38         if( Connection->SignalState & (SEL_CONNECT | SEL_FIN) ) {
  39             while (!IsListEmpty(&Connection->ConnectRequest)) {
  40                Entry = RemoveHeadList( &Connection->ConnectRequest );
  41
  42                Bucket = CONTAINING_RECORD( Entry, TDI_BUCKET, Entry );
  43
  44                Bucket->Status = (Connection->SignalState & SEL_CONNECT) ? STATUS_SUCCESS : STATUS_CANCELLED;
  45                Bucket->Information = 0;
  46
  47                InsertTailList(&Connection->CompletionQueue, &Bucket->Entry);
  48            }
  49        }
  50
  51        if( Connection->SignalState & (SEL_ACCEPT | SEL_FIN) ) {
  52            /* Handle readable on a listening socket --
  53             * TODO: Implement filtering
  54             */
  55            TI_DbgPrint(DEBUG_TCP,("Accepting new connection on %x (Queue: %s)\n",
  56                                   Connection,
  57                                   IsListEmpty(&Connection->ListenRequest) ?
  58                                   "empty" : "nonempty"));
  59
  60            while (!IsListEmpty(&Connection->ListenRequest)) {
  61                PIO_STACK_LOCATION IrpSp;
  62
  63                Entry = RemoveHeadList( &Connection->ListenRequest );
  64
  65                Bucket = CONTAINING_RECORD( Entry, TDI_BUCKET, Entry );
  66
  67                Irp = Bucket->Request.RequestContext;
  68                IrpSp = IoGetCurrentIrpStackLocation( Irp );
  69
  70                TI_DbgPrint(DEBUG_TCP,("Getting the socket\n"));
  71
  72                Status = TCPServiceListeningSocket
  73                    ( Connection->AddressFile->Listener,
  74                      Bucket->AssociatedEndpoint,
  75                      (PTDI_REQUEST_KERNEL)&IrpSp->Parameters );
  76
  77                TI_DbgPrint(DEBUG_TCP,("Socket: Status: %x\n"));
  78
  79                if( Status == STATUS_PENDING && !(Connection->SignalState & SEL_FIN) ) {
  80                    InsertHeadList( &Connection->ListenRequest, &Bucket->Entry );
  81                    break;
  82                } else {
  83                    Bucket->Status = (Status == STATUS_PENDING) ? STATUS_CANCELLED : Status;
  84                    Bucket->Information = 0;
  85                    DereferenceObject(Bucket->AssociatedEndpoint);
  86
  87                    InsertTailList(&Connection->CompletionQueue, &Bucket->Entry);
  88                }
  89           }
  90       }
  91
  92       /* Things that happen after we're connected */
  93       if( Connection->SignalState & (SEL_READ | SEL_FIN) ) {
  94           TI_DbgPrint(DEBUG_TCP,("Readable: irp list %s\n",
  95                                  IsListEmpty(&Connection->ReceiveRequest) ?
  96                                  "empty" : "nonempty"));
  97
  98            while (!IsListEmpty(&Connection->ReceiveRequest)) {
  99                OSK_UINT RecvLen = 0, Received = 0;
 100                PVOID RecvBuffer = 0;
 101
 102                Entry = RemoveHeadList( &Connection->ReceiveRequest );
 103
 104                Bucket = CONTAINING_RECORD( Entry, TDI_BUCKET, Entry );
 105
 106                Irp = Bucket->Request.RequestContext;
 107                Mdl = Irp->MdlAddress;
 108
 109                TI_DbgPrint(DEBUG_TCP,
 110                            ("Getting the user buffer from %x\n", Mdl));
 111
 112                NdisQueryBuffer( Mdl, &RecvBuffer, &RecvLen );
 113
 114                TI_DbgPrint(DEBUG_TCP,
 115                            ("Reading %d bytes to %x\n", RecvLen, RecvBuffer));
 116
 117                TI_DbgPrint(DEBUG_TCP, ("Connection: %x\n", Connection));
 118                TI_DbgPrint
 119                    (DEBUG_TCP,
 120                     ("Connection->SocketContext: %x\n",
 121                      Connection->SocketContext));
 122                TI_DbgPrint(DEBUG_TCP, ("RecvBuffer: %x\n", RecvBuffer));
 123
 124                Status = TCPTranslateError
 125                     ( OskitTCPRecv( Connection->SocketContext,
 126                                     RecvBuffer,
 127                                     RecvLen,
 128                                     &Received,
 129                                     0 ) );
 130
 131                TI_DbgPrint(DEBUG_TCP,("TCP Bytes: %d\n", Received));
 132
 133                if( Status == STATUS_PENDING && !(Connection->SignalState & SEL_FIN) ) {
 134                    InsertHeadList( &Connection->ReceiveRequest, &Bucket->Entry );
 135                    break;
 136                } else {
 137                    TI_DbgPrint(DEBUG_TCP,
 138                                ("Completing Receive request: %x %x\n",
 139                                 Bucket->Request, Status));
 140
 141                    Bucket->Status = (Status == STATUS_PENDING) ? STATUS_CANCELLED : Status;
 142                    Bucket->Information = (Bucket->Status == STATUS_SUCCESS) ? Received : 0;
 143
 144                    InsertTailList(&Connection->CompletionQueue, &Bucket->Entry);
 145                }
 146            }
 147        }
 148        if( Connection->SignalState & (SEL_WRITE | SEL_FIN) ) {
 149            TI_DbgPrint(DEBUG_TCP,("Writeable: irp list %s\n",
 150                                   IsListEmpty(&Connection->SendRequest) ?
 151                                   "empty" : "nonempty"));
 152
 153            while (!IsListEmpty(&Connection->SendRequest)) {
 154                OSK_UINT SendLen = 0, Sent = 0;
 155                PVOID SendBuffer = 0;
 156
 157                Entry = RemoveHeadList( &Connection->SendRequest );
 158
 159                Bucket = CONTAINING_RECORD( Entry, TDI_BUCKET, Entry );
 160
 161                Irp = Bucket->Request.RequestContext;
 162                Mdl = Irp->MdlAddress;
 163
 164                TI_DbgPrint(DEBUG_TCP,
 165                            ("Getting the user buffer from %x\n", Mdl));
 166
 167                NdisQueryBuffer( Mdl, &SendBuffer, &SendLen );
 168
 169                TI_DbgPrint(DEBUG_TCP,
 170                            ("Writing %d bytes to %x\n", SendLen, SendBuffer));
 171
 172                TI_DbgPrint(DEBUG_TCP, ("Connection: %x\n", Connection));
 173                TI_DbgPrint
 174                 (DEBUG_TCP,
 175                  ("Connection->SocketContext: %x\n",
 176                   Connection->SocketContext));
 177
 178                Status = TCPTranslateError
 179                    ( OskitTCPSend( Connection->SocketContext,
 180                                    SendBuffer,
 181                                    SendLen,
 182                                    &Sent,
 183                                    0 ) );
 184
 185                TI_DbgPrint(DEBUG_TCP,("TCP Bytes: %d\n", Sent));
 186
 187                if( Status == STATUS_PENDING && !(Connection->SignalState & SEL_FIN) ) {
 188                    InsertHeadList( &Connection->SendRequest, &Bucket->Entry );
 189                    break;
 190                } else {
 191                    TI_DbgPrint(DEBUG_TCP,
 192                                ("Completing Send request: %x %x\n",
 193                                Bucket->Request, Status));
 194
 195                    Bucket->Status = (Status == STATUS_PENDING) ? STATUS_CANCELLED : Status;
 196                    Bucket->Information = (Bucket->Status == STATUS_SUCCESS) ? Sent : 0;
 197
 198                    InsertTailList(&Connection->CompletionQueue, &Bucket->Entry);
 199                }
 200            }
 201        }
 202
 203        ReferenceObject(Connection);
 204        if (ClientInfo.Unlocked)
 205        {
 206            UnlockObjectFromDpcLevel(Connection);
 207            KeReleaseSpinLock(&ClientInfo.Lock, ClientInfo.OldIrql);
 208        }
 209        else
 210        {
 211            UnlockObject(Connection, Connection->OldIrql);
 212        }
 213
 214        while ((Entry = ExInterlockedRemoveHeadList(&Connection->CompletionQueue,
 215                                                    &Connection->Lock)))
 216        {
 217            Bucket = CONTAINING_RECORD(Entry, TDI_BUCKET, Entry);
 218            Complete = Bucket->Request.RequestNotifyObject;
 219
 220            Complete(Bucket->Request.RequestContext, Bucket->Status, Bucket->Information);
 221
 222            ExFreePoolWithTag(Bucket, TDI_BUCKET_TAG);
 223        }
 224
 225        if (!ClientInfo.Unlocked)
 226        {
 227            LockObject(Connection, &OldIrql);
 228        }
 229        else
 230        {
 231            KeAcquireSpinLock(&ClientInfo.Lock, &ClientInfo.OldIrql);
 232        }
 233        DereferenceObject(Connection);
 234
 235        /* If the socket is dead, remove the reference we added for oskit */
 236        if (Connection->SignalState & SEL_FIN)
 237            DereferenceObject(Connection);
 238 }
 239
 240 VOID ConnectionFree(PVOID Object) {
 241     PCONNECTION_ENDPOINT Connection = Object;
 242     KIRQL OldIrql;
 243
 244     TI_DbgPrint(DEBUG_TCP, ("Freeing TCP Endpoint\n"));
 245
 246     TcpipAcquireSpinLock(&ConnectionEndpointListLock, &OldIrql);
 247     RemoveEntryList(&Connection->ListEntry);
 248     TcpipReleaseSpinLock(&ConnectionEndpointListLock, OldIrql);
 249
 250     ExFreePoolWithTag( Connection, CONN_ENDPT_TAG );
 251 }
 252
 253 PCONNECTION_ENDPOINT TCPAllocateConnectionEndpoint( PVOID ClientContext ) {
 254     PCONNECTION_ENDPOINT Connection =
 255         ExAllocatePoolWithTag(NonPagedPool, sizeof(CONNECTION_ENDPOINT),
 256                               CONN_ENDPT_TAG);
 257     if (!Connection)
 258         return Connection;
 259
 260     TI_DbgPrint(DEBUG_CPOINT, ("Connection point file object allocated at (0x%X).\n", Connection));
 261
 262     RtlZeroMemory(Connection, sizeof(CONNECTION_ENDPOINT));
 263
 264     /* Initialize spin lock that protects the connection endpoint file object */
 265     KeInitializeSpinLock(&Connection->Lock);
 266     InitializeListHead(&Connection->ConnectRequest);
 267     InitializeListHead(&Connection->ListenRequest);
 268     InitializeListHead(&Connection->ReceiveRequest);
 269     InitializeListHead(&Connection->SendRequest);
 270     InitializeListHead(&Connection->CompletionQueue);
 271
 272     /* Save client context pointer */
 273     Connection->ClientContext = ClientContext;
 274
 275     /* Add an extra reference for oskit */
 276     Connection->RefCount = 2;
 277     Connection->Free = ConnectionFree;
 278
 279     /* Add connection endpoint to global list */
 280     ExInterlockedInsertTailList(&ConnectionEndpointListHead,
 281                                 &Connection->ListEntry,
 282                                 &ConnectionEndpointListLock);
 283
 284     return Connection;
 285 }
 286
 287 NTSTATUS TCPSocket( PCONNECTION_ENDPOINT Connection,
 288                     UINT Family, UINT Type, UINT Proto ) {
 289     NTSTATUS Status;
 290     KIRQL OldIrql;
 291
 292     LockObject(Connection, &OldIrql);
 293
 294     TI_DbgPrint(DEBUG_TCP,("Called: Connection %x, Family %d, Type %d, "
 295                            "Proto %d\n",
 296                            Connection, Family, Type, Proto));
 297
 298     Status = TCPTranslateError( OskitTCPSocket( Connection,
 299                                                 &Connection->SocketContext,
 300                                                 Family,
 301                                                 Type,
 302                                                 Proto ) );
 303
 304     ASSERT_KM_POINTER(Connection->SocketContext);
 305
 306     TI_DbgPrint(DEBUG_TCP,("Connection->SocketContext %x\n",
 307                            Connection->SocketContext));
 308
 309     UnlockObject(Connection, OldIrql);
 310
 311     return Status;
 312 }
 313
 314 VOID TCPReceive(PIP_INTERFACE Interface, PIP_PACKET IPPacket)
 315 /*
 316  * FUNCTION: Receives and queues TCP data
 317  * ARGUMENTS:
 318  *     IPPacket = Pointer to an IP packet that was received
 319  * NOTES:
 320  *     This is the low level interface for receiving TCP data
 321  */
 322 {
 323     KIRQL OldIrql;
 324
 325     TI_DbgPrint(DEBUG_TCP,("Sending packet %d (%d) to oskit\n",
 326                            IPPacket->TotalSize,
 327                            IPPacket->HeaderSize));
 328
 329     KeAcquireSpinLock(&ClientInfo.Lock, &OldIrql);
 330     ClientInfo.Unlocked = TRUE;
 331     ClientInfo.OldIrql = OldIrql;
 332
 333     OskitTCPReceiveDatagram( IPPacket->Header,
 334                              IPPacket->TotalSize,
 335                              IPPacket->HeaderSize );
 336
 337     ClientInfo.Unlocked = FALSE;
 338     KeReleaseSpinLock(&ClientInfo.Lock, OldIrql);
 339 }
 340
 341 /* event.c */
 342 int TCPSocketState( void *ClientData,
 343                     void *WhichSocket,
 344                     void *WhichConnection,
 345                     OSK_UINT NewState );
 346
 347 int TCPPacketSend( void *ClientData,
 348                    OSK_PCHAR Data,
 349                    OSK_UINT Len );
 350
 351 POSK_IFADDR TCPFindInterface( void *ClientData,
 352                               OSK_UINT AddrType,
 353                               OSK_UINT FindType,
 354                               OSK_SOCKADDR *ReqAddr );
 355
 356 NTSTATUS TCPMemStartup( void );
 357 void *TCPMalloc( void *ClientData,
 358                  OSK_UINT bytes, OSK_PCHAR file, OSK_UINT line );
 359 void TCPFree( void *ClientData,
 360               void *data, OSK_PCHAR file, OSK_UINT line );
 361 void TCPMemShutdown( void );
 362
 363 OSKITTCP_EVENT_HANDLERS EventHandlers = {
 364     NULL,             /* Client Data */
 365     TCPSocketState,   /* SocketState */
 366     TCPPacketSend,    /* PacketSend */
 367     TCPFindInterface, /* FindInterface */
 368     TCPMalloc,        /* Malloc */
 369     TCPFree,          /* Free */
 370     NULL,             /* Sleep */
 371     NULL,             /* Wakeup */
 372 };
 373
 374 static KEVENT TimerLoopEvent;
 375 static HANDLE TimerThreadHandle;
 376
 377 /*
 378  * We are running 2 timers here, one with a 200ms interval (fast) and the other
 379  * with a 500ms interval (slow). So we need to time out at 200, 400, 500, 600,
 380  * 800, 1000 and process the "fast" events at 200, 400, 600, 800, 1000 and the
 381  * "slow" events at 500 and 1000.
 382  */
 383 static VOID NTAPI
 384 TimerThread(PVOID Context)
 385 {
 386     LARGE_INTEGER Timeout;
 387     NTSTATUS Status;
 388     unsigned Current, NextFast, NextSlow, Next;
 389
 390     Current = 0;
 391     Next = 0;
 392     NextFast = 0;
 393     NextSlow = 0;
 394     while ( 1 ) {
 395         if (Next == NextFast) {
 396             NextFast += 2;
 397        }
 398         if (Next == NextSlow) {
 399             NextSlow += 5;
 400         }
 401         Next = min(NextFast, NextSlow);
 402         Timeout.QuadPart = (LONGLONG) (Next - Current) * -1000000; /* 100 ms */
 403         Status = KeWaitForSingleObject(&TimerLoopEvent, Executive, KernelMode,
 404                                        FALSE, &Timeout);
 405         if (Status != STATUS_TIMEOUT) {
 406             PsTerminateSystemThread(Status);
 407         }
 408
 409         TimerOskitTCP( Next == NextFast, Next == NextSlow );
 410
 411         Current = Next;
 412         if (10 <= Current) {
 413             Current = 0;
 414             Next = 0;
 415             NextFast = 0;
 416             NextSlow = 0;
 417         }
 418     }
 419 }
 420
 421 static VOID
 422 StartTimer(VOID)
 423 {
 424     KeInitializeEvent(&TimerLoopEvent, NotificationEvent, FALSE);
 425     PsCreateSystemThread(&TimerThreadHandle, THREAD_ALL_ACCESS, 0, 0, 0,
 426                          TimerThread, NULL);
 427 }
 428
 429 NTSTATUS TCPStartup(VOID)
 430 /*
 431  * FUNCTION: Initializes the TCP subsystem
 432  * RETURNS:
 433  *     Status of operation
 434  */
 435 {
 436     NTSTATUS Status;
 437
 438     Status = TCPMemStartup();
 439     if ( ! NT_SUCCESS(Status) ) {
 440         return Status;
 441     }
 442
 443     Status = PortsStartup( &TCPPorts, 1, 0xfffe );
 444     if( !NT_SUCCESS(Status) ) {
 445         TCPMemShutdown();
 446         return Status;
 447     }
 448
 449     KeInitializeSpinLock(&ClientInfo.Lock);
 450     ClientInfo.Unlocked = FALSE;
 451
 452     RegisterOskitTCPEventHandlers( &EventHandlers );
 453     InitOskitTCP();
 454
 455     /* Register this protocol with IP layer */
 456     IPRegisterProtocol(IPPROTO_TCP, TCPReceive);
 457
 458     ExInitializeNPagedLookasideList(
 459         &TCPSegmentList,                /* Lookaside list */
 460         NULL,                           /* Allocate routine */
 461         NULL,                           /* Free routine */
 462         0,                              /* Flags */
 463         sizeof(TCP_SEGMENT),            /* Size of each entry */
 464         'SPCT',                         /* Tag */
 465         0);                             /* Depth */
 466
 467     StartTimer();
 468
 469     TCPInitialized = TRUE;
 470
 471     return STATUS_SUCCESS;
 472 }
 473
 474
 475 NTSTATUS TCPShutdown(VOID)
 476 /*
 477  * FUNCTION: Shuts down the TCP subsystem
 478  * RETURNS:
 479  *     Status of operation
 480  */
 481 {
 482     LARGE_INTEGER WaitForThread;
 483
 484     if (!TCPInitialized)
 485         return STATUS_SUCCESS;
 486
 487     WaitForThread.QuadPart = -2500000; /* 250 ms */
 488     KeSetEvent(&TimerLoopEvent, IO_NO_INCREMENT, FALSE);
 489     ZwWaitForSingleObject(TimerThreadHandle, FALSE, &WaitForThread);
 490
 491     /* Deregister this protocol with IP layer */
 492     IPRegisterProtocol(IPPROTO_TCP, NULL);
 493
 494     ExDeleteNPagedLookasideList(&TCPSegmentList);
 495
 496     TCPInitialized = FALSE;
 497
 498     DeinitOskitTCP();
 499
 500     PortsShutdown( &TCPPorts );
 501
 502     TCPMemShutdown();
 503
 504     return STATUS_SUCCESS;
 505 }
 506
 507 NTSTATUS TCPTranslateError( int OskitError ) {
 508     NTSTATUS Status;
 509
 510     switch( OskitError ) {
 511     case 0: Status = STATUS_SUCCESS; break;
 512     case OSK_EADDRNOTAVAIL: Status = STATUS_INVALID_ADDRESS; break;
 513     case OSK_EADDRINUSE: Status = STATUS_ADDRESS_ALREADY_EXISTS; break;
 514     case OSK_EAFNOSUPPORT: Status = STATUS_INVALID_CONNECTION; break;
 515     case OSK_ECONNREFUSED: Status = STATUS_REMOTE_NOT_LISTENING; break;
 516     case OSK_ECONNRESET: Status = STATUS_REMOTE_DISCONNECT; break;
 517     case OSK_ECONNABORTED: Status = STATUS_LOCAL_DISCONNECT; break;
 518     case OSK_EWOULDBLOCK:
 519     case OSK_EINPROGRESS: Status = STATUS_PENDING; break;
 520     case OSK_EINVAL: Status = STATUS_INVALID_PARAMETER; break;
 521     case OSK_ENOMEM:
 522     case OSK_ENOBUFS: Status = STATUS_INSUFFICIENT_RESOURCES; break;
 523     case OSK_ESHUTDOWN: Status = STATUS_FILE_CLOSED; break;
 524     case OSK_EMSGSIZE: Status = STATUS_BUFFER_TOO_SMALL; break;
 525     case OSK_ETIMEDOUT: Status = STATUS_TIMEOUT; break;
 526     case OSK_ENETUNREACH: Status = STATUS_NETWORK_UNREACHABLE; break;
 527     case OSK_EFAULT: Status = STATUS_ACCESS_VIOLATION; break;
 528     default:
 529        DbgPrint("OskitTCP returned unhandled error code: %d\n", OskitError);
 530        Status = STATUS_INVALID_CONNECTION;
 531        break;
 532     }
 533
 534     TI_DbgPrint(DEBUG_TCP,("Error %d -> %x\n", OskitError, Status));
 535     return Status;
 536 }
 537
 538 NTSTATUS TCPConnect
 539 ( PCONNECTION_ENDPOINT Connection,
 540   PTDI_CONNECTION_INFORMATION ConnInfo,
 541   PTDI_CONNECTION_INFORMATION ReturnInfo,
 542   PTCP_COMPLETION_ROUTINE Complete,
 543   PVOID Context ) {
 544     NTSTATUS Status;
 545     SOCKADDR_IN AddressToConnect = { 0 }, AddressToBind = { 0 };
 546     IP_ADDRESS RemoteAddress;
 547     USHORT RemotePort;
 548     PTDI_BUCKET Bucket;
 549     PNEIGHBOR_CACHE_ENTRY NCE;
 550     KIRQL OldIrql;
 551
 552     TI_DbgPrint(DEBUG_TCP,("TCPConnect: Called\n"));
 553
 554     Status = AddrBuildAddress
 555         ((PTRANSPORT_ADDRESS)ConnInfo->RemoteAddress,
 556          &RemoteAddress,
 557          &RemotePort);
 558
 559     if (!NT_SUCCESS(Status)) {
 560         TI_DbgPrint(DEBUG_TCP, ("Could not AddrBuildAddress in TCPConnect\n"));
 561         return Status;
 562     }
 563
 564     /* Freed in TCPSocketState */
 565     TI_DbgPrint(DEBUG_TCP,
 566                 ("Connecting to address %x:%x\n",
 567                  RemoteAddress.Address.IPv4Address,
 568                  RemotePort));
 569
 570     AddressToConnect.sin_family = AF_INET;
 571     AddressToBind = AddressToConnect;
 572
 573     LockObject(Connection, &OldIrql);
 574
 575     if (!Connection->AddressFile)
 576     {
 577         UnlockObject(Connection, OldIrql);
 578         return STATUS_INVALID_PARAMETER;
 579     }
 580
 581     if (AddrIsUnspecified(&Connection->AddressFile->Address))
 582     {
 583         if (!(NCE = RouteGetRouteToDestination(&RemoteAddress)))
 584         {
 585             UnlockObject(Connection, OldIrql);
 586             return STATUS_NETWORK_UNREACHABLE;
 587         }
 588
 589         AddressToBind.sin_addr.s_addr = NCE->Interface->Unicast.Address.IPv4Address;
 590     }
 591     else
 592     {
 593         AddressToBind.sin_addr.s_addr = Connection->AddressFile->Address.Address.IPv4Address;
 594     }
 595
 596     Status = TCPTranslateError
 597         ( OskitTCPBind( Connection->SocketContext,
 598                         &AddressToBind,
 599                         sizeof(AddressToBind) ) );
 600
 601     if (NT_SUCCESS(Status)) {
 602         memcpy( &AddressToConnect.sin_addr,
 603                 &RemoteAddress.Address.IPv4Address,
 604                 sizeof(AddressToConnect.sin_addr) );
 605         AddressToConnect.sin_port = RemotePort;
 606
 607         Status = TCPTranslateError
 608             ( OskitTCPConnect( Connection->SocketContext,
 609                                &AddressToConnect,
 610                                sizeof(AddressToConnect) ) );
 611
 612         if (Status == STATUS_PENDING)
 613         {
 614             Bucket = ExAllocatePoolWithTag( NonPagedPool, sizeof(*Bucket), TDI_BUCKET_TAG );
 615             if( !Bucket )
 616             {
 617                UnlockObject(Connection, OldIrql);
 618                return STATUS_NO_MEMORY;
 619             }
 620
 621             Bucket->Request.RequestNotifyObject = (PVOID)Complete;
 622             Bucket->Request.RequestContext = Context;
 623
 624             InsertTailList( &Connection->ConnectRequest, &Bucket->Entry );
 625         }
 626     }
 627
 628     UnlockObject(Connection, OldIrql);
 629
 630     return Status;
 631 }
 632
 633 NTSTATUS TCPDisconnect
 634 ( PCONNECTION_ENDPOINT Connection,
 635   UINT Flags,
 636   PTDI_CONNECTION_INFORMATION ConnInfo,
 637   PTDI_CONNECTION_INFORMATION ReturnInfo,
 638   PTCP_COMPLETION_ROUTINE Complete,
 639   PVOID Context ) {
 640     NTSTATUS Status = STATUS_INVALID_PARAMETER;
 641     KIRQL OldIrql;
 642
 643     TI_DbgPrint(DEBUG_TCP,("started\n"));
 644
 645     LockObject(Connection, &OldIrql);
 646
 647     if (Flags & TDI_DISCONNECT_RELEASE)
 648         Status = TCPTranslateError(OskitTCPDisconnect(Connection->SocketContext));
 649
 650     if ((Flags & TDI_DISCONNECT_ABORT) || !Flags)
 651         Status = TCPTranslateError(OskitTCPShutdown(Connection->SocketContext, FWRITE | FREAD));
 652
 653     UnlockObject(Connection, OldIrql);
 654
 655     TI_DbgPrint(DEBUG_TCP,("finished %x\n", Status));
 656
 657     return Status;
 658 }
 659
 660 NTSTATUS TCPClose
 661 ( PCONNECTION_ENDPOINT Connection )
 662 {
 663     KIRQL OldIrql;
 664     NTSTATUS Status;
 665     PVOID Socket;
 666
 667     /* We don't rely on SocketContext == NULL for socket
 668      * closure anymore but we still need it to determine
 669      * if we caused the closure
 670      */
 671     LockObject(Connection, &OldIrql);
 672     Socket = Connection->SocketContext;
 673     Connection->SocketContext = NULL;
 674
 675     /* Don't try to close again if the other side closed us already */
 676     if (!(Connection->SignalState & SEL_FIN))
 677     {
 678        /* We need to close here otherwise oskit will never indicate
 679         * SEL_FIN and we will never fully close the connection */
 680        Status = TCPTranslateError( OskitTCPClose( Socket ) );
 681
 682        if (!NT_SUCCESS(Status))
 683        {
 684            Connection->SocketContext = Socket;
 685            UnlockObject(Connection, OldIrql);
 686            return Status;
 687        }
 688     }
 689     else
 690     {
 691        /* We are already closed by the other end so return success */
 692        Status = STATUS_SUCCESS;
 693     }
 694
 695     if (Connection->AddressFile)
 696         DereferenceObject(Connection->AddressFile);
 697
 698     UnlockObject(Connection, OldIrql);
 699
 700     DereferenceObject(Connection);
 701
 702     return Status;
 703 }
 704
 705 NTSTATUS TCPReceiveData
 706 ( PCONNECTION_ENDPOINT Connection,
 707   PNDIS_BUFFER Buffer,
 708   ULONG ReceiveLength,
 709   PULONG BytesReceived,
 710   ULONG ReceiveFlags,
 711   PTCP_COMPLETION_ROUTINE Complete,
 712   PVOID Context ) {
 713     PVOID DataBuffer;
 714     UINT DataLen, Received = 0;
 715     NTSTATUS Status;
 716     PTDI_BUCKET Bucket;
 717     KIRQL OldIrql;
 718
 719     TI_DbgPrint(DEBUG_TCP,("Called for %d bytes (on socket %x)\n",
 720                            ReceiveLength, Connection->SocketContext));
 721
 722     NdisQueryBuffer( Buffer, &DataBuffer, &DataLen );
 723
 724     TI_DbgPrint(DEBUG_TCP,("TCP>|< Got an MDL %x (%x:%d)\n", Buffer, DataBuffer, DataLen));
 725
 726     LockObject(Connection, &OldIrql);
 727
 728     Status = TCPTranslateError
 729         ( OskitTCPRecv
 730           ( Connection->SocketContext,
 731             DataBuffer,
 732             DataLen,
 733             &Received,
 734             ReceiveFlags ) );
 735
 736     TI_DbgPrint(DEBUG_TCP,("OskitTCPReceive: %x, %d\n", Status, Received));
 737
 738     /* Keep this request around ... there was no data yet */
 739     if( Status == STATUS_PENDING ) {
 740         /* Freed in TCPSocketState */
 741         Bucket = ExAllocatePoolWithTag( NonPagedPool, sizeof(*Bucket), TDI_BUCKET_TAG );
 742         if( !Bucket ) {
 743             TI_DbgPrint(DEBUG_TCP,("Failed to allocate bucket\n"));
 744             UnlockObject(Connection, OldIrql);
 745             return STATUS_NO_MEMORY;
 746         }
 747
 748         Bucket->Request.RequestNotifyObject = Complete;
 749         Bucket->Request.RequestContext = Context;
 750         *BytesReceived = 0;
 751
 752         InsertTailList( &Connection->ReceiveRequest, &Bucket->Entry );
 753         TI_DbgPrint(DEBUG_TCP,("Queued read irp\n"));
 754     } else {
 755         TI_DbgPrint(DEBUG_TCP,("Got status %x, bytes %d\n", Status, Received));
 756         *BytesReceived = Received;
 757     }
 758
 759     UnlockObject(Connection, OldIrql);
 760
 761     TI_DbgPrint(DEBUG_TCP,("Status %x\n", Status));
 762
 763     return Status;
 764 }
 765
 766 NTSTATUS TCPSendData
 767 ( PCONNECTION_ENDPOINT Connection,
 768   PCHAR BufferData,
 769   ULONG SendLength,
 770   PULONG BytesSent,
 771   ULONG Flags,
 772   PTCP_COMPLETION_ROUTINE Complete,
 773   PVOID Context ) {
 774     UINT Sent = 0;
 775     NTSTATUS Status;
 776     PTDI_BUCKET Bucket;
 777     KIRQL OldIrql;
 778
 779     LockObject(Connection, &OldIrql);
 780
 781     TI_DbgPrint(DEBUG_TCP,("Called for %d bytes (on socket %x)\n",
 782                            SendLength, Connection->SocketContext));
 783
 784     TI_DbgPrint(DEBUG_TCP,("Connection = %x\n", Connection));
 785     TI_DbgPrint(DEBUG_TCP,("Connection->SocketContext = %x\n",
 786                            Connection->SocketContext));
 787
 788     Status = TCPTranslateError
 789         ( OskitTCPSend( Connection->SocketContext,
 790                         (OSK_PCHAR)BufferData, SendLength,
 791                         &Sent, 0 ) );
 792
 793     TI_DbgPrint(DEBUG_TCP,("OskitTCPSend: %x, %d\n", Status, Sent));
 794
 795     /* Keep this request around ... there was no data yet */
 796     if( Status == STATUS_PENDING ) {
 797         /* Freed in TCPSocketState */
 798         Bucket = ExAllocatePoolWithTag( NonPagedPool, sizeof(*Bucket), TDI_BUCKET_TAG );
 799         if( !Bucket ) {
 800             UnlockObject(Connection, OldIrql);
 801             TI_DbgPrint(DEBUG_TCP,("Failed to allocate bucket\n"));
 802             return STATUS_NO_MEMORY;
 803         }
 804
 805         Bucket->Request.RequestNotifyObject = Complete;
 806         Bucket->Request.RequestContext = Context;
 807         *BytesSent = 0;
 808
 809         InsertTailList( &Connection->SendRequest, &Bucket->Entry );
 810         TI_DbgPrint(DEBUG_TCP,("Queued write irp\n"));
 811     } else {
 812         TI_DbgPrint(DEBUG_TCP,("Got status %x, bytes %d\n", Status, Sent));
 813         *BytesSent = Sent;
 814     }
 815
 816     UnlockObject(Connection, OldIrql);
 817
 818     TI_DbgPrint(DEBUG_TCP,("Status %x\n", Status));
 819
 820     return Status;
 821 }
 822
 823 UINT TCPAllocatePort( UINT HintPort ) {
 824     if( HintPort ) {
 825         if( AllocatePort( &TCPPorts, HintPort ) ) return HintPort;
 826         else {
 827             TI_DbgPrint
 828                 (MID_TRACE,("We got a hint port but couldn't allocate it\n"));
 829             return (UINT)-1;
 830         }
 831     } else return AllocatePortFromRange( &TCPPorts, 1024, 5000 );
 832 }
 833
 834 VOID TCPFreePort( UINT Port ) {
 835     DeallocatePort( &TCPPorts, Port );
 836 }
 837
 838 NTSTATUS TCPGetSockAddress
 839 ( PCONNECTION_ENDPOINT Connection,
 840   PTRANSPORT_ADDRESS Address,
 841   BOOLEAN GetRemote ) {
 842     OSK_UINT LocalAddress, RemoteAddress;
 843     OSK_UI16 LocalPort, RemotePort;
 844     PTA_IP_ADDRESS AddressIP = (PTA_IP_ADDRESS)Address;
 845     NTSTATUS Status;
 846     KIRQL OldIrql;
 847
 848     LockObject(Connection, &OldIrql);
 849
 850     Status = TCPTranslateError(OskitTCPGetAddress(Connection->SocketContext,
 851                                                   &LocalAddress, &LocalPort,
 852                                                   &RemoteAddress, &RemotePort));
 853
 854     UnlockObject(Connection, OldIrql);
 855
 856     if (!NT_SUCCESS(Status))
 857         return Status;
 858
 859     AddressIP->TAAddressCount = 1;
 860     AddressIP->Address[0].AddressLength = TDI_ADDRESS_LENGTH_IP;
 861     AddressIP->Address[0].AddressType = TDI_ADDRESS_TYPE_IP;
 862     AddressIP->Address[0].Address[0].sin_port = GetRemote ? RemotePort : LocalPort;
 863     AddressIP->Address[0].Address[0].in_addr = GetRemote ? RemoteAddress : LocalAddress;
 864
 865     return Status;
 866 }
 867
 868 BOOLEAN TCPRemoveIRP( PCONNECTION_ENDPOINT Endpoint, PIRP Irp ) {
 869     PLIST_ENTRY Entry;
 870     PLIST_ENTRY ListHead[4];
 871     KIRQL OldIrql;
 872     PTDI_BUCKET Bucket;
 873     UINT i = 0;
 874     BOOLEAN Found = FALSE;
 875
 876     ListHead[0] = &Endpoint->SendRequest;
 877     ListHead[1] = &Endpoint->ReceiveRequest;
 878     ListHead[2] = &Endpoint->ConnectRequest;
 879     ListHead[3] = &Endpoint->ListenRequest;
 880
 881     LockObject(Endpoint, &OldIrql);
 882
 883     for( i = 0; i < 4; i++ )
 884     {
 885         for( Entry = ListHead[i]->Flink;
 886              Entry != ListHead[i];
 887              Entry = Entry->Flink )
 888         {
 889             Bucket = CONTAINING_RECORD( Entry, TDI_BUCKET, Entry );
 890             if( Bucket->Request.RequestContext == Irp )
 891             {
 892                 RemoveEntryList( &Bucket->Entry );
 893                 ExFreePoolWithTag( Bucket, TDI_BUCKET_TAG );
 894                 Found = TRUE;
 895                 break;
 896             }
 897         }
 898     }
 899
 900     UnlockObject(Endpoint, OldIrql);
 901
 902     return Found;
 903 }
 904
 905 /* EOF */