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