reactos/drivers/network/tcpip/datalink/lan.c

   1 /*
   2  * COPYRIGHT:   See COPYING in the top level directory
   3  * PROJECT:     ReactOS TCP/IP protocol driver
   4  * FILE:        datalink/lan.c
   5  * PURPOSE:     Local Area Network media routines
   6  * PROGRAMMERS: Casper S. Hornstrup (chorns@users.sourceforge.net)
   7  * REVISIONS:
   8  *   CSH 01/08-2000 Created
   9  */
  10
  11 #include "precomp.h"
  12
  13 UINT TransferDataCalled = 0;
  14 UINT TransferDataCompleteCalled = 0;
  15 UINT LanReceiveWorkerCalled = 0;
  16 BOOLEAN LanReceiveWorkerBusy = FALSE;
  17
  18 #define CCS_ROOT L"\\Registry\\Machine\\SYSTEM\\CurrentControlSet"
  19 #define TCPIP_GUID L"{4D36E972-E325-11CE-BFC1-08002BE10318}"
  20
  21 #define NGFP(_Packet)                                             \
  22     {                                                             \
  23         PVOID _Header;                                            \
  24         ULONG _ContigSize, _TotalSize;                            \
  25         PNDIS_BUFFER _NdisBuffer;                                 \
  26                                                                   \
  27         TI_DbgPrint(MID_TRACE,("Checking Packet %x\n", _Packet)); \
  28         NdisGetFirstBufferFromPacket(_Packet,                     \
  29                                      &_NdisBuffer,                \
  30                                      &_Header,                    \
  31                                      &_ContigSize,                \
  32                                      &_TotalSize);                \
  33         TI_DbgPrint(MID_TRACE,("NdisBuffer: %x\n", _NdisBuffer)); \
  34         TI_DbgPrint(MID_TRACE,("Header    : %x\n", _Header));     \
  35         TI_DbgPrint(MID_TRACE,("ContigSize: %x\n", _ContigSize)); \
  36         TI_DbgPrint(MID_TRACE,("TotalSize : %x\n", _TotalSize));  \
  37     }
  38
  39 typedef struct _LAN_WQ_ITEM {
  40     LIST_ENTRY ListEntry;
  41     PNDIS_PACKET Packet;
  42     PLAN_ADAPTER Adapter;
  43     UINT BytesTransferred;
  44 } LAN_WQ_ITEM, *PLAN_WQ_ITEM;
  45
  46 NDIS_HANDLE NdisProtocolHandle = (NDIS_HANDLE)NULL;
  47 BOOLEAN ProtocolRegistered     = FALSE;
  48 LIST_ENTRY AdapterListHead;
  49 KSPIN_LOCK AdapterListLock;
  50
  51 NDIS_STATUS NDISCall(
  52     PLAN_ADAPTER Adapter,
  53     NDIS_REQUEST_TYPE Type,
  54     NDIS_OID OID,
  55     PVOID Buffer,
  56     UINT Length)
  57 /*
  58  * FUNCTION: Send a request to NDIS
  59  * ARGUMENTS:
  60  *     Adapter     = Pointer to a LAN_ADAPTER structure
  61  *     Type        = Type of request (Set or Query)
  62  *     OID         = Value to be set/queried for
  63  *     Buffer      = Pointer to a buffer to use
  64  *     Length      = Number of bytes in Buffer
  65  * RETURNS:
  66  *     Status of operation
  67  */
  68 {
  69     NDIS_REQUEST Request;
  70     NDIS_STATUS NdisStatus;
  71
  72     Request.RequestType = Type;
  73     if (Type == NdisRequestSetInformation) {
  74         Request.DATA.SET_INFORMATION.Oid                     = OID;
  75         Request.DATA.SET_INFORMATION.InformationBuffer       = Buffer;
  76         Request.DATA.SET_INFORMATION.InformationBufferLength = Length;
  77     } else {
  78         Request.DATA.QUERY_INFORMATION.Oid                     = OID;
  79         Request.DATA.QUERY_INFORMATION.InformationBuffer       = Buffer;
  80         Request.DATA.QUERY_INFORMATION.InformationBufferLength = Length;
  81     }
  82
  83     if (Adapter->State != LAN_STATE_RESETTING) {
  84         NdisRequest(&NdisStatus, Adapter->NdisHandle, &Request);
  85     } else {
  86         NdisStatus = NDIS_STATUS_NOT_ACCEPTED;
  87     }
  88
  89     /* Wait for NDIS to complete the request */
  90     if (NdisStatus == NDIS_STATUS_PENDING) {
  91         KeWaitForSingleObject(&Adapter->Event,
  92                               UserRequest,
  93                               KernelMode,
  94                               FALSE,
  95                               NULL);
  96         NdisStatus = Adapter->NdisStatus;
  97     }
  98
  99     return NdisStatus;
 100 }
 101
 102
 103 VOID FreeAdapter(
 104     PLAN_ADAPTER Adapter)
 105 /*
 106  * FUNCTION: Frees memory for a LAN_ADAPTER structure
 107  * ARGUMENTS:
 108  *     Adapter = Pointer to LAN_ADAPTER structure to free
 109  */
 110 {
 111     exFreePool(Adapter);
 112 }
 113
 114
 115 NTSTATUS TcpipLanGetDwordOid
 116 ( PIP_INTERFACE Interface,
 117   NDIS_OID Oid,
 118   PULONG Result ) {
 119     /* Get maximum frame size */
 120     if( Interface->Context ) {
 121         return NDISCall((PLAN_ADAPTER)Interface->Context,
 122                         NdisRequestQueryInformation,
 123                         Oid,
 124                         Result,
 125                         sizeof(ULONG));
 126     } else switch( Oid ) { /* Loopback Case */
 127     case OID_GEN_HARDWARE_STATUS:
 128         *Result = NdisHardwareStatusReady;
 129         return STATUS_SUCCESS;
 130
 131     default:
 132         return STATUS_INVALID_PARAMETER;
 133     }
 134 }
 135
 136
 137 VOID NTAPI ProtocolOpenAdapterComplete(
 138     NDIS_HANDLE BindingContext,
 139     NDIS_STATUS Status,
 140     NDIS_STATUS OpenErrorStatus)
 141 /*
 142  * FUNCTION: Called by NDIS to complete opening of an adapter
 143  * ARGUMENTS:
 144  *     BindingContext  = Pointer to a device context (LAN_ADAPTER)
 145  *     Status          = Status of the operation
 146  *     OpenErrorStatus = Additional status information
 147  */
 148 {
 149     PLAN_ADAPTER Adapter = (PLAN_ADAPTER)BindingContext;
 150
 151     TI_DbgPrint(DEBUG_DATALINK, ("Called.\n"));
 152
 153     Adapter->NdisStatus = Status;
 154
 155     KeSetEvent(&Adapter->Event, 0, FALSE);
 156 }
 157
 158
 159 VOID NTAPI ProtocolCloseAdapterComplete(
 160     NDIS_HANDLE BindingContext,
 161     NDIS_STATUS Status)
 162 /*
 163  * FUNCTION: Called by NDIS to complete closing an adapter
 164  * ARGUMENTS:
 165  *     BindingContext = Pointer to a device context (LAN_ADAPTER)
 166  *     Status         = Status of the operation
 167  */
 168 {
 169     PLAN_ADAPTER Adapter = (PLAN_ADAPTER)BindingContext;
 170
 171     TI_DbgPrint(DEBUG_DATALINK, ("Called.\n"));
 172
 173     Adapter->NdisStatus = Status;
 174
 175     KeSetEvent(&Adapter->Event, 0, FALSE);
 176 }
 177
 178
 179 VOID NTAPI ProtocolResetComplete(
 180     NDIS_HANDLE BindingContext,
 181     NDIS_STATUS Status)
 182 /*
 183  * FUNCTION: Called by NDIS to complete resetting an adapter
 184  * ARGUMENTS:
 185  *     BindingContext = Pointer to a device context (LAN_ADAPTER)
 186  *     Status         = Status of the operation
 187  */
 188 {
 189     PLAN_ADAPTER Adapter = (PLAN_ADAPTER)BindingContext;
 190
 191     TI_DbgPrint(DEBUG_DATALINK, ("Called.\n"));
 192
 193     Adapter->NdisStatus = Status;
 194
 195     KeSetEvent(&Adapter->Event, 0, FALSE);
 196 }
 197
 198
 199 VOID NTAPI ProtocolRequestComplete(
 200     NDIS_HANDLE BindingContext,
 201     PNDIS_REQUEST NdisRequest,
 202     NDIS_STATUS Status)
 203 /*
 204  * FUNCTION: Called by NDIS to complete a request
 205  * ARGUMENTS:
 206  *     BindingContext = Pointer to a device context (LAN_ADAPTER)
 207  *     NdisRequest    = Pointer to an object describing the request
 208  *     Status         = Status of the operation
 209  */
 210 {
 211     PLAN_ADAPTER Adapter = (PLAN_ADAPTER)BindingContext;
 212
 213     TI_DbgPrint(DEBUG_DATALINK, ("Called.\n"));
 214
 215     /* Save status of request and signal an event */
 216     Adapter->NdisStatus = Status;
 217
 218     KeSetEvent(&Adapter->Event, 0, FALSE);
 219 }
 220
 221
 222 VOID NTAPI ProtocolSendComplete(
 223     NDIS_HANDLE BindingContext,
 224     PNDIS_PACKET Packet,
 225     NDIS_STATUS Status)
 226 /*
 227  * FUNCTION: Called by NDIS to complete sending process
 228  * ARGUMENTS:
 229  *     BindingContext = Pointer to a device context (LAN_ADAPTER)
 230  *     Packet         = Pointer to a packet descriptor
 231  *     Status         = Status of the operation
 232  */
 233 {
 234     TI_DbgPrint(DEBUG_DATALINK, ("Calling completion routine\n"));
 235     ASSERT_KM_POINTER(Packet);
 236     ASSERT_KM_POINTER(PC(Packet));
 237     ASSERT_KM_POINTER(PC(Packet)->DLComplete);
 238     (*PC(Packet)->DLComplete)( PC(Packet)->Context, Packet, Status);
 239     TI_DbgPrint(DEBUG_DATALINK, ("Finished\n"));
 240 }
 241
 242 VOID LanReceiveWorker( PVOID Context ) {
 243     UINT PacketType;
 244     PLAN_WQ_ITEM WorkItem = (PLAN_WQ_ITEM)Context;
 245     PNDIS_PACKET Packet;
 246     PLAN_ADAPTER Adapter;
 247     UINT BytesTransferred;
 248     PNDIS_BUFFER NdisBuffer;
 249     IP_PACKET IPPacket;
 250
 251     TI_DbgPrint(DEBUG_DATALINK, ("Called.\n"));
 252
 253     Packet = WorkItem->Packet;
 254     Adapter = WorkItem->Adapter;
 255     BytesTransferred = WorkItem->BytesTransferred;
 256
 257     IPPacket.NdisPacket = Packet;
 258
 259     NdisGetFirstBufferFromPacket(Packet,
 260                                  &NdisBuffer,
 261                                  &IPPacket.Header,
 262                                  &IPPacket.ContigSize,
 263                                  &IPPacket.TotalSize);
 264
 265     IPPacket.ContigSize = IPPacket.TotalSize = BytesTransferred;
 266     /* Determine which upper layer protocol that should receive
 267        this packet and pass it to the correct receive handler */
 268
 269     TI_DbgPrint(MID_TRACE,
 270                 ("ContigSize: %d, TotalSize: %d, BytesTransferred: %d\n",
 271                  IPPacket.ContigSize, IPPacket.TotalSize,
 272                  BytesTransferred));
 273
 274     PacketType = PC(IPPacket.NdisPacket)->PacketType;
 275     IPPacket.Position = 0;
 276
 277     TI_DbgPrint
 278         (DEBUG_DATALINK,
 279          ("Ether Type = %x ContigSize = %d Total = %d\n",
 280           PacketType, IPPacket.ContigSize, IPPacket.TotalSize));
 281
 282     switch (PacketType) {
 283     case ETYPE_IPv4:
 284     case ETYPE_IPv6:
 285         TI_DbgPrint(MID_TRACE,("Received IP Packet\n"));
 286         IPReceive(Adapter->Context, &IPPacket);
 287         break;
 288     case ETYPE_ARP:
 289         TI_DbgPrint(MID_TRACE,("Received ARP Packet\n"));
 290         ARPReceive(Adapter->Context, &IPPacket);
 291     default:
 292         break;
 293     }
 294
 295     FreeNdisPacket( Packet );
 296 }
 297
 298 VOID LanSubmitReceiveWork(
 299     NDIS_HANDLE BindingContext,
 300     PNDIS_PACKET Packet,
 301     NDIS_STATUS Status,
 302     UINT BytesTransferred) {
 303     LAN_WQ_ITEM WQItem;
 304     PLAN_ADAPTER Adapter = (PLAN_ADAPTER)BindingContext;
 305     PVOID LanWorkItem;
 306
 307     TI_DbgPrint(DEBUG_DATALINK,("called\n"));
 308
 309     WQItem.Packet = Packet;
 310     WQItem.Adapter = Adapter;
 311     WQItem.BytesTransferred = BytesTransferred;
 312
 313     if( !ChewCreate
 314         ( &LanWorkItem, sizeof(LAN_WQ_ITEM),  LanReceiveWorker, &WQItem ) )
 315         ASSERT(0);
 316 }
 317
 318 VOID NTAPI ProtocolTransferDataComplete(
 319     NDIS_HANDLE BindingContext,
 320     PNDIS_PACKET Packet,
 321     NDIS_STATUS Status,
 322     UINT BytesTransferred)
 323 /*
 324  * FUNCTION: Called by NDIS to complete reception of data
 325  * ARGUMENTS:
 326  *     BindingContext   = Pointer to a device context (LAN_ADAPTER)
 327  *     Packet           = Pointer to a packet descriptor
 328  *     Status           = Status of the operation
 329  *     BytesTransferred = Number of bytes transferred
 330  * NOTES:
 331  *     If the packet was successfully received, determine the protocol
 332  *     type and pass it to the correct receive handler
 333  */
 334 {
 335     ASSERT(KeGetCurrentIrql() == DISPATCH_LEVEL);
 336
 337     TI_DbgPrint(DEBUG_DATALINK,("called\n"));
 338
 339     TransferDataCompleteCalled++;
 340     ASSERT(TransferDataCompleteCalled <= TransferDataCalled);
 341
 342     if( Status != NDIS_STATUS_SUCCESS ) return;
 343
 344     LanSubmitReceiveWork( BindingContext, Packet, Status, BytesTransferred );
 345 }
 346
 347 NDIS_STATUS NTAPI ProtocolReceive(
 348     NDIS_HANDLE BindingContext,
 349     NDIS_HANDLE MacReceiveContext,
 350     PVOID HeaderBuffer,
 351     UINT HeaderBufferSize,
 352     PVOID LookaheadBuffer,
 353     UINT LookaheadBufferSize,
 354     UINT PacketSize)
 355 /*
 356  * FUNCTION: Called by NDIS when a packet has been received on the physical link
 357  * ARGUMENTS:
 358  *     BindingContext      = Pointer to a device context (LAN_ADAPTER)
 359  *     MacReceiveContext   = Handle used by underlying NIC driver
 360  *     HeaderBuffer        = Pointer to a buffer containing the packet header
 361  *     HeaderBufferSize    = Number of bytes in HeaderBuffer
 362  *     LookaheadBuffer     = Pointer to a buffer containing buffered packet data
 363  *     LookaheadBufferSize = Size of LookaheadBuffer. May be less than asked for
 364  *     PacketSize          = Overall size of the packet (not including header)
 365  * RETURNS:
 366  *     Status of operation
 367  */
 368 {
 369     USHORT EType;
 370     UINT PacketType, BytesTransferred;
 371     UINT temp;
 372     IP_PACKET IPPacket;
 373     PCHAR BufferData;
 374     NDIS_STATUS NdisStatus;
 375     PNDIS_PACKET NdisPacket;
 376     PLAN_ADAPTER Adapter = (PLAN_ADAPTER)BindingContext;
 377     PETH_HEADER EHeader  = (PETH_HEADER)HeaderBuffer;
 378
 379     TI_DbgPrint(DEBUG_DATALINK, ("Called. (packetsize %d)\n",PacketSize));
 380
 381     if (Adapter->State != LAN_STATE_STARTED) {
 382         TI_DbgPrint(DEBUG_DATALINK, ("Adapter is stopped.\n"));
 383         return NDIS_STATUS_NOT_ACCEPTED;
 384     }
 385
 386     if (HeaderBufferSize < Adapter->HeaderSize) {
 387         TI_DbgPrint(DEBUG_DATALINK, ("Runt frame received.\n"));
 388         return NDIS_STATUS_NOT_ACCEPTED;
 389     }
 390
 391     if (Adapter->Media == NdisMedium802_3) {
 392         /* Ethernet and IEEE 802.3 frames can be destinguished by
 393            looking at the IEEE 802.3 length field. This field is
 394            less than or equal to 1500 for a valid IEEE 802.3 frame
 395            and larger than 1500 is it's a valid EtherType value.
 396            See RFC 1122, section 2.3.3 for more information */
 397         /* FIXME: Test for Ethernet and IEEE 802.3 frame */
 398         if (((EType = EHeader->EType) != ETYPE_IPv4) && (EType != ETYPE_ARP)) {
 399             TI_DbgPrint(DEBUG_DATALINK, ("Not IP or ARP frame. EtherType (0x%X).\n", EType));
 400             return NDIS_STATUS_NOT_ACCEPTED;
 401         }
 402         /* We use EtherType constants to destinguish packet types */
 403         PacketType = EType;
 404     } else {
 405         TI_DbgPrint(MIN_TRACE, ("Unsupported media.\n"));
 406         /* FIXME: Support other medias */
 407         return NDIS_STATUS_NOT_ACCEPTED;
 408     }
 409
 410     /* Get a transfer data packet */
 411
 412     TI_DbgPrint(DEBUG_DATALINK, ("Adapter: %x (MTU %d)\n",
 413                                  Adapter, Adapter->MTU));
 414
 415     NdisStatus = AllocatePacketWithBuffer( &NdisPacket, NULL,
 416                                            PacketSize + HeaderBufferSize );
 417     if( NdisStatus != NDIS_STATUS_SUCCESS ) {
 418         return NDIS_STATUS_NOT_ACCEPTED;
 419     }
 420
 421     PC(NdisPacket)->PacketType = PacketType;
 422
 423     TI_DbgPrint(DEBUG_DATALINK, ("pretransfer LookaheadBufferSize %d packsize %d\n",LookaheadBufferSize,PacketSize));
 424
 425     GetDataPtr( NdisPacket, 0, &BufferData, &temp );
 426
 427     IPPacket.NdisPacket = NdisPacket;
 428     IPPacket.Position = 0;
 429
 430     TransferDataCalled++;
 431
 432     if (LookaheadBufferSize == PacketSize)
 433     {
 434         /* Optimized code path for packets that are fully contained in
 435          * the lookahead buffer. */
 436         NdisCopyLookaheadData(BufferData,
 437                               LookaheadBuffer,
 438                               LookaheadBufferSize,
 439                               Adapter->MacOptions);
 440     }
 441     else
 442     {
 443         NdisTransferData(&NdisStatus, Adapter->NdisHandle,
 444                          MacReceiveContext, 0, PacketSize,
 445                          NdisPacket, &BytesTransferred);
 446     }
 447     TI_DbgPrint(DEBUG_DATALINK, ("Calling complete\n"));
 448
 449     if (NdisStatus != NDIS_STATUS_PENDING)
 450         ProtocolTransferDataComplete(BindingContext,
 451                                      NdisPacket,
 452                                      NdisStatus,
 453                                      PacketSize);
 454
 455     TI_DbgPrint(DEBUG_DATALINK, ("leaving\n"));
 456
 457     return NDIS_STATUS_SUCCESS;
 458 }
 459
 460
 461 VOID NTAPI ProtocolReceiveComplete(
 462     NDIS_HANDLE BindingContext)
 463 /*
 464  * FUNCTION: Called by NDIS when we're done receiving data
 465  * ARGUMENTS:
 466  *     BindingContext = Pointer to a device context (LAN_ADAPTER)
 467  */
 468 {
 469     TI_DbgPrint(DEBUG_DATALINK, ("Called.\n"));
 470 }
 471
 472
 473 VOID NTAPI ProtocolStatus(
 474     NDIS_HANDLE BindingContext,
 475     NDIS_STATUS GeneralStatus,
 476     PVOID StatusBuffer,
 477     UINT StatusBufferSize)
 478 /*
 479  * FUNCTION: Called by NDIS when the underlying driver has changed state
 480  * ARGUMENTS:
 481  *     BindingContext   = Pointer to a device context (LAN_ADAPTER)
 482  *     GeneralStatus    = A general status code
 483  *     StatusBuffer     = Pointer to a buffer with medium-specific data
 484  *     StatusBufferSize = Number of bytes in StatusBuffer
 485  */
 486 {
 487     PLAN_ADAPTER Adapter = BindingContext;
 488
 489     TI_DbgPrint(DEBUG_DATALINK, ("Called.\n"));
 490
 491     switch(GeneralStatus)
 492     {
 493       case NDIS_STATUS_MEDIA_CONNECT:
 494          DbgPrint("NDIS_STATUS_MEDIA_CONNECT\n");
 495          break;
 496
 497       case NDIS_STATUS_MEDIA_DISCONNECT:
 498          DbgPrint("NDIS_STATUS_MEDIA_DISCONNECT\n");
 499          break;
 500
 501       case NDIS_STATUS_RESET_START:
 502          Adapter->State = LAN_STATE_RESETTING;
 503          break;
 504
 505       case NDIS_STATUS_RESET_END:
 506          Adapter->State = LAN_STATE_STARTED;
 507          break;
 508
 509       default:
 510          DbgPrint("Unhandled status: %x", GeneralStatus);
 511          break;
 512     }
 513 }
 514
 515
 516 VOID NTAPI ProtocolStatusComplete(
 517     NDIS_HANDLE NdisBindingContext)
 518 /*
 519  * FUNCTION: Called by NDIS when a status-change has occurred
 520  * ARGUMENTS:
 521  *     BindingContext = Pointer to a device context (LAN_ADAPTER)
 522  */
 523 {
 524     TI_DbgPrint(DEBUG_DATALINK, ("Called.\n"));
 525 }
 526
 527 VOID NTAPI ProtocolBindAdapter(
 528     OUT PNDIS_STATUS   Status,
 529     IN  NDIS_HANDLE    BindContext,
 530     IN  PNDIS_STRING   DeviceName,
 531     IN  PVOID          SystemSpecific1,
 532     IN  PVOID          SystemSpecific2)
 533 /*
 534  * FUNCTION: Called by NDIS during NdisRegisterProtocol to set up initial
 535  *           bindings, and periodically thereafer as new adapters come online
 536  * ARGUMENTS:
 537  *     Status: Return value to NDIS
 538  *     BindContext: Handle provided by NDIS to track pending binding operations
 539  *     DeviceName: Name of the miniport device to bind to
 540  *     SystemSpecific1: Pointer to a registry path with protocol-specific configuration information
 541  *     SystemSpecific2: Unused & must not be touched
 542  */
 543 {
 544     /* XXX confirm that this is still true, or re-word the following comment */
 545     /* we get to ignore BindContext because we will never pend an operation with NDIS */
 546     TI_DbgPrint(DEBUG_DATALINK, ("Called with registry path %wZ for %wZ\n", SystemSpecific1, DeviceName));
 547     *Status = LANRegisterAdapter(DeviceName, SystemSpecific1);
 548 }
 549
 550
 551 VOID LANTransmit(
 552     PVOID Context,
 553     PNDIS_PACKET NdisPacket,
 554     UINT Offset,
 555     PVOID LinkAddress,
 556     USHORT Type)
 557 /*
 558  * FUNCTION: Transmits a packet
 559  * ARGUMENTS:
 560  *     Context     = Pointer to context information (LAN_ADAPTER)
 561  *     NdisPacket  = Pointer to NDIS packet to send
 562  *     Offset      = Offset in packet where data starts
 563  *     LinkAddress = Pointer to link address of destination (NULL = broadcast)
 564  *     Type        = LAN protocol type (LAN_PROTO_*)
 565  */
 566 {
 567     NDIS_STATUS NdisStatus;
 568     PETH_HEADER EHeader;
 569     PCHAR Data;
 570     UINT Size;
 571     PLAN_ADAPTER Adapter = (PLAN_ADAPTER)Context;
 572     KIRQL OldIrql;
 573
 574     TI_DbgPrint(DEBUG_DATALINK,
 575                 ("Called( NdisPacket %x, Offset %d, Adapter %x )\n",
 576                  NdisPacket, Offset, Adapter));
 577
 578     if (Adapter->State != LAN_STATE_STARTED) {
 579         ProtocolSendComplete(Context, NdisPacket, NDIS_STATUS_NOT_ACCEPTED);
 580         return;
 581     }
 582
 583     TI_DbgPrint(DEBUG_DATALINK,
 584                 ("Adapter Address [%02x %02x %02x %02x %02x %02x]\n",
 585                  Adapter->HWAddress[0] & 0xff,
 586                  Adapter->HWAddress[1] & 0xff,
 587                  Adapter->HWAddress[2] & 0xff,
 588                  Adapter->HWAddress[3] & 0xff,
 589                  Adapter->HWAddress[4] & 0xff,
 590                  Adapter->HWAddress[5] & 0xff));
 591
 592     /* XXX arty -- Handled adjustment in a saner way than before ...
 593      * not needed immediately */
 594     GetDataPtr( NdisPacket, 0, &Data, &Size );
 595
 596         switch (Adapter->Media) {
 597         case NdisMedium802_3:
 598             EHeader = (PETH_HEADER)Data;
 599
 600             if (LinkAddress) {
 601                 /* Unicast address */
 602                 RtlCopyMemory(EHeader->DstAddr, LinkAddress, IEEE_802_ADDR_LENGTH);
 603             } else {
 604                 /* Broadcast address */
 605                 RtlFillMemory(EHeader->DstAddr, IEEE_802_ADDR_LENGTH, 0xFF);
 606             }
 607
 608             RtlCopyMemory(EHeader->SrcAddr, Adapter->HWAddress, IEEE_802_ADDR_LENGTH);
 609
 610             switch (Type) {
 611             case LAN_PROTO_IPv4:
 612                 EHeader->EType = ETYPE_IPv4;
 613                 break;
 614             case LAN_PROTO_ARP:
 615                 EHeader->EType = ETYPE_ARP;
 616                 break;
 617             case LAN_PROTO_IPv6:
 618                 EHeader->EType = ETYPE_IPv6;
 619                 break;
 620             default:
 621 #ifdef DBG
 622                 /* Should not happen */
 623                 TI_DbgPrint(MIN_TRACE, ("Unknown LAN protocol.\n"));
 624
 625                 ProtocolSendComplete((NDIS_HANDLE)Context,
 626                                      NdisPacket,
 627                                      NDIS_STATUS_FAILURE);
 628 #endif
 629                 return;
 630             }
 631             break;
 632
 633         default:
 634             /* FIXME: Support other medias */
 635             break;
 636         }
 637
 638         TI_DbgPrint( MID_TRACE, ("LinkAddress: %x\n", LinkAddress));
 639         if( LinkAddress ) {
 640             TI_DbgPrint
 641                 ( MID_TRACE,
 642                   ("Link Address [%02x %02x %02x %02x %02x %02x]\n",
 643                    ((PCHAR)LinkAddress)[0] & 0xff,
 644                    ((PCHAR)LinkAddress)[1] & 0xff,
 645                    ((PCHAR)LinkAddress)[2] & 0xff,
 646                    ((PCHAR)LinkAddress)[3] & 0xff,
 647                    ((PCHAR)LinkAddress)[4] & 0xff,
 648                    ((PCHAR)LinkAddress)[5] & 0xff));
 649         }
 650
 651         TcpipAcquireSpinLock( &Adapter->Lock, &OldIrql );
 652         TI_DbgPrint(MID_TRACE, ("NdisSend\n"));
 653         NdisSend(&NdisStatus, Adapter->NdisHandle, NdisPacket);
 654         TI_DbgPrint(MID_TRACE, ("NdisSend %s\n",
 655                                 NdisStatus == NDIS_STATUS_PENDING ?
 656                                 "Pending" : "Complete"));
 657         TcpipReleaseSpinLock( &Adapter->Lock, OldIrql );
 658
 659         /* I had a talk with vizzini: these really ought to be here.
 660          * we're supposed to see these completed by ndis *only* when
 661          * status_pending is returned.  Note that this is different from
 662          * the situation with IRPs. */
 663         if (NdisStatus != NDIS_STATUS_PENDING)
 664             ProtocolSendComplete((NDIS_HANDLE)Context, NdisPacket, NdisStatus);
 665 }
 666
 667 static NTSTATUS
 668 OpenRegistryKey( PNDIS_STRING RegistryPath, PHANDLE RegHandle ) {
 669     OBJECT_ATTRIBUTES Attributes;
 670     NTSTATUS Status;
 671
 672     InitializeObjectAttributes(&Attributes, RegistryPath, OBJ_CASE_INSENSITIVE, 0, 0);
 673     Status = ZwOpenKey(RegHandle, KEY_ALL_ACCESS, &Attributes);
 674     return Status;
 675 }
 676
 677 static NTSTATUS ReadStringFromRegistry( HANDLE RegHandle,
 678                                         PWCHAR RegistryValue,
 679                                         PUNICODE_STRING String ) {
 680     UNICODE_STRING ValueName;
 681     UNICODE_STRING UnicodeString;
 682     NTSTATUS Status;
 683     ULONG ResultLength;
 684     UCHAR buf[1024];
 685     PKEY_VALUE_PARTIAL_INFORMATION Information = (PKEY_VALUE_PARTIAL_INFORMATION)buf;
 686
 687     RtlInitUnicodeString(&ValueName, RegistryValue);
 688     Status =
 689         ZwQueryValueKey(RegHandle,
 690                         &ValueName,
 691                         KeyValuePartialInformation,
 692                         Information,
 693                         sizeof(buf),
 694                         &ResultLength);
 695
 696     if (!NT_SUCCESS(Status))
 697         return Status;
 698     /* IP address is stored as a REG_MULTI_SZ - we only pay attention to the first one though */
 699     TI_DbgPrint(MIN_TRACE, ("Information DataLength: 0x%x\n", Information->DataLength));
 700
 701     UnicodeString.Buffer = (PWCHAR)&Information->Data;
 702     UnicodeString.Length = Information->DataLength - sizeof(WCHAR);
 703     UnicodeString.MaximumLength = Information->DataLength;
 704
 705     String->Buffer =
 706         (PWCHAR)exAllocatePool( NonPagedPool,
 707                                 UnicodeString.MaximumLength + sizeof(WCHAR) );
 708
 709     if( !String->Buffer ) return STATUS_NO_MEMORY;
 710
 711     String->MaximumLength = UnicodeString.MaximumLength;
 712     RtlCopyUnicodeString( String, &UnicodeString );
 713
 714     return STATUS_SUCCESS;
 715 }
 716
 717 /*
 718  * Utility to copy and append two unicode strings.
 719  *
 720  * IN OUT PUNICODE_STRING ResultFirst -> First string and result
 721  * IN     PUNICODE_STRING Second      -> Second string to append
 722  * IN     BOOL            Deallocate  -> TRUE: Deallocate First string before
 723  *                                       overwriting.
 724  *
 725  * Returns NTSTATUS.
 726  */
 727
 728 NTSTATUS NTAPI AppendUnicodeString(PUNICODE_STRING ResultFirst,
 729                                    PUNICODE_STRING Second,
 730                                    BOOLEAN Deallocate) {
 731     NTSTATUS Status;
 732     UNICODE_STRING Ustr = *ResultFirst;
 733     PWSTR new_string = ExAllocatePoolWithTag
 734         (PagedPool,
 735          (ResultFirst->Length + Second->Length + sizeof(WCHAR)), TAG_STRING);
 736     if( !new_string ) {
 737         return STATUS_NO_MEMORY;
 738     }
 739     memcpy( new_string, ResultFirst->Buffer, ResultFirst->Length );
 740     memcpy( new_string + ResultFirst->Length / sizeof(WCHAR),
 741             Second->Buffer, Second->Length );
 742     if( Deallocate ) RtlFreeUnicodeString(ResultFirst);
 743     ResultFirst->Length = Ustr.Length + Second->Length;
 744     ResultFirst->MaximumLength = ResultFirst->Length;
 745     new_string[ResultFirst->Length / sizeof(WCHAR)] = 0;
 746     Status = RtlCreateUnicodeString(ResultFirst,new_string) ?
 747         STATUS_SUCCESS : STATUS_NO_MEMORY;
 748     ExFreePool(new_string);
 749     return Status;
 750 }
 751
 752 static NTSTATUS CheckForDeviceDesc( PUNICODE_STRING EnumKeyName,
 753                                     PUNICODE_STRING TargetKeyName,
 754                                     PUNICODE_STRING Name,
 755                                     PUNICODE_STRING DeviceDesc ) {
 756     UNICODE_STRING RootDevice = { 0, 0, NULL }, LinkageKeyName = { 0, 0, NULL };
 757     UNICODE_STRING DescKeyName = { 0, 0, NULL }, Linkage = { 0, 0, NULL };
 758     UNICODE_STRING BackSlash = { 0, 0, NULL };
 759     HANDLE DescKey = NULL, LinkageKey = NULL;
 760     NTSTATUS Status;
 761
 762     TI_DbgPrint(DEBUG_DATALINK,("EnumKeyName %wZ\n", EnumKeyName));
 763
 764     RtlInitUnicodeString(&BackSlash, L"\\");
 765     RtlInitUnicodeString(&Linkage, L"\\Linkage");
 766
 767     RtlInitUnicodeString(&DescKeyName, L"");
 768     AppendUnicodeString( &DescKeyName, EnumKeyName, FALSE );
 769     AppendUnicodeString( &DescKeyName, &BackSlash, TRUE );
 770     AppendUnicodeString( &DescKeyName, TargetKeyName, TRUE );
 771
 772     RtlInitUnicodeString(&LinkageKeyName, L"");
 773     AppendUnicodeString( &LinkageKeyName, &DescKeyName, FALSE );
 774     AppendUnicodeString( &LinkageKeyName, &Linkage, TRUE );
 775
 776     Status = OpenRegistryKey( &LinkageKeyName, &LinkageKey );
 777     if( !NT_SUCCESS(Status) ) goto cleanup;
 778
 779     Status = ReadStringFromRegistry( LinkageKey, L"RootDevice", &RootDevice );
 780     if( !NT_SUCCESS(Status) ) goto cleanup;
 781
 782     if( RtlCompareUnicodeString( &RootDevice, Name, TRUE ) == 0 ) {
 783         Status = OpenRegistryKey( &DescKeyName, &DescKey );
 784         if( !NT_SUCCESS(Status) ) goto cleanup;
 785
 786         Status = ReadStringFromRegistry( DescKey, L"DriverDesc", DeviceDesc );
 787         if( !NT_SUCCESS(Status) ) goto cleanup;
 788
 789         TI_DbgPrint(DEBUG_DATALINK,("ADAPTER DESC: %wZ\n", DeviceDesc));
 790     } else Status = STATUS_UNSUCCESSFUL;
 791
 792 cleanup:
 793     RtlFreeUnicodeString( &RootDevice );
 794     RtlFreeUnicodeString( &LinkageKeyName );
 795     RtlFreeUnicodeString( &DescKeyName );
 796     if( LinkageKey ) NtClose( LinkageKey );
 797     if( DescKey ) NtClose( DescKey );
 798
 799     TI_DbgPrint(DEBUG_DATALINK,("Returning %x\n", Status));
 800
 801     return Status;
 802 }
 803
 804 static NTSTATUS FindDeviceDescForAdapter( PUNICODE_STRING Name,
 805                                           PUNICODE_STRING DeviceDesc ) {
 806     UNICODE_STRING EnumKeyName, TargetKeyName;
 807     HANDLE EnumKey;
 808     NTSTATUS Status;
 809     ULONG i;
 810     KEY_BASIC_INFORMATION *Kbio =
 811         ExAllocatePool(NonPagedPool, sizeof(KEY_BASIC_INFORMATION));
 812     ULONG KbioLength = sizeof(KEY_BASIC_INFORMATION), ResultLength;
 813
 814     if( !Kbio ) return STATUS_INSUFFICIENT_RESOURCES;
 815
 816     RtlInitUnicodeString
 817         (&EnumKeyName, CCS_ROOT L"\\Control\\Class\\" TCPIP_GUID);
 818
 819     Status = OpenRegistryKey( &EnumKeyName, &EnumKey );
 820
 821     if( !NT_SUCCESS(Status) ) {
 822         TI_DbgPrint(DEBUG_DATALINK,("Couldn't open Enum key %wZ: %x\n",
 823                                     &EnumKeyName, Status));
 824         ExFreePool( Kbio );
 825         return Status;
 826     }
 827
 828     for( i = 0; NT_SUCCESS(Status); i++ ) {
 829         Status = ZwEnumerateKey( EnumKey, i, KeyBasicInformation,
 830                                  Kbio, KbioLength, &ResultLength );
 831
 832         if( Status == STATUS_BUFFER_TOO_SMALL || Status == STATUS_BUFFER_OVERFLOW ) {
 833             ExFreePool( Kbio );
 834             KbioLength = ResultLength;
 835             Kbio = ExAllocatePool( NonPagedPool, KbioLength );
 836             if( !Kbio ) {
 837                 TI_DbgPrint(DEBUG_DATALINK,("Failed to allocate memory\n"));
 838                 NtClose( EnumKey );
 839                 return STATUS_NO_MEMORY;
 840             }
 841
 842             Status = ZwEnumerateKey( EnumKey, i, KeyBasicInformation,
 843                                      Kbio, KbioLength, &ResultLength );
 844
 845             if( !NT_SUCCESS(Status) ) {
 846                 TI_DbgPrint(DEBUG_DATALINK,("Couldn't enum key child %d\n", i));
 847                 NtClose( EnumKey );
 848                 ExFreePool( Kbio );
 849                 return Status;
 850             }
 851         }
 852
 853         if( NT_SUCCESS(Status) ) {
 854             TargetKeyName.Length = TargetKeyName.MaximumLength =
 855                 Kbio->NameLength;
 856             TargetKeyName.Buffer = Kbio->Name;
 857
 858             Status = CheckForDeviceDesc
 859                 ( &EnumKeyName, &TargetKeyName, Name, DeviceDesc );
 860             if( NT_SUCCESS(Status) ) {
 861                 NtClose( EnumKey );
 862                 ExFreePool( Kbio );
 863                 return Status;
 864             } else Status = STATUS_SUCCESS;
 865         }
 866     }
 867
 868     RtlInitUnicodeString( DeviceDesc, L"" );
 869     AppendUnicodeString( DeviceDesc, &TargetKeyName, FALSE );
 870     NtClose( EnumKey );
 871     ExFreePool( Kbio );
 872     return STATUS_UNSUCCESSFUL;
 873 }
 874
 875 VOID GetName( PUNICODE_STRING RegistryKey,
 876               PUNICODE_STRING OutName ) {
 877     PWCHAR Ptr;
 878     UNICODE_STRING PartialRegistryKey;
 879
 880     PartialRegistryKey.Buffer =
 881         RegistryKey->Buffer + wcslen(CCS_ROOT L"\\Services\\");
 882     Ptr = PartialRegistryKey.Buffer;
 883
 884     while( *Ptr != L'\\' &&
 885            ((PCHAR)Ptr) < ((PCHAR)RegistryKey->Buffer) + RegistryKey->Length )
 886         Ptr++;
 887
 888     PartialRegistryKey.Length = PartialRegistryKey.MaximumLength =
 889         (Ptr - PartialRegistryKey.Buffer) * sizeof(WCHAR);
 890
 891     RtlInitUnicodeString( OutName, L"" );
 892     AppendUnicodeString( OutName, &PartialRegistryKey, FALSE );
 893 }
 894
 895 BOOLEAN BindAdapter(
 896     PLAN_ADAPTER Adapter,
 897     PNDIS_STRING RegistryPath)
 898 /*
 899  * FUNCTION: Binds a LAN adapter to IP layer
 900  * ARGUMENTS:
 901  *     Adapter = Pointer to LAN_ADAPTER structure
 902  * NOTES:
 903  *    We set the lookahead buffer size, set the packet filter and
 904  *    bind the adapter to IP layer
 905  */
 906 {
 907     PIP_INTERFACE IF;
 908     NDIS_STATUS NdisStatus;
 909     LLIP_BIND_INFO BindInfo;
 910     IP_ADDRESS DefaultMask;
 911     ULONG Lookahead = LOOKAHEAD_SIZE;
 912     NTSTATUS Status;
 913
 914     TI_DbgPrint(DEBUG_DATALINK, ("Called.\n"));
 915
 916     Adapter->State = LAN_STATE_OPENING;
 917
 918     NdisStatus = NDISCall(Adapter,
 919                           NdisRequestSetInformation,
 920                           OID_GEN_CURRENT_LOOKAHEAD,
 921                           &Lookahead,
 922                           sizeof(ULONG));
 923     if (NdisStatus != NDIS_STATUS_SUCCESS) {
 924         TI_DbgPrint(DEBUG_DATALINK, ("Could not set lookahead buffer size (0x%X).\n", NdisStatus));
 925         return FALSE;
 926     }
 927
 928     /* Bind the adapter to IP layer */
 929     BindInfo.Context       = Adapter;
 930     BindInfo.HeaderSize    = Adapter->HeaderSize;
 931     BindInfo.MinFrameSize  = Adapter->MinFrameSize;
 932     BindInfo.MTU           = Adapter->MTU;
 933     BindInfo.Address       = (PUCHAR)&Adapter->HWAddress;
 934     BindInfo.AddressLength = Adapter->HWAddressLength;
 935     BindInfo.Transmit      = LANTransmit;
 936
 937     IF = IPCreateInterface(&BindInfo);
 938
 939     if (!IF) {
 940         TI_DbgPrint(MIN_TRACE, ("Insufficient resources.\n"));
 941         return FALSE;
 942     }
 943
 944     /*
 945      * Query per-adapter configuration from the registry
 946      * In case anyone is curious:  there *is* an Ndis configuration api
 947      * for this sort of thing, but it doesn't really support things like
 948      * REG_MULTI_SZ very well, and there is a note in the DDK that says that
 949      * protocol drivers developed for win2k and above just use the native
 950      * services (ZwOpenKey, etc).
 951      */
 952
 953     GetName( RegistryPath, &IF->Name );
 954
 955     Status = FindDeviceDescForAdapter( &IF->Name, &IF->Description );
 956
 957     TI_DbgPrint(DEBUG_DATALINK,("Adapter Description: %wZ\n",
 958                 &IF->Description));
 959
 960     AddrInitIPv4(&DefaultMask, 0);
 961
 962     IF->Unicast = DefaultMask;
 963     IF->Netmask = DefaultMask;
 964
 965     IF->Broadcast.Type = IP_ADDRESS_V4;
 966     IF->Broadcast.Address.IPv4Address =
 967         IF->Unicast.Address.IPv4Address |
 968         ~IF->Netmask.Address.IPv4Address;
 969
 970     TI_DbgPrint(DEBUG_DATALINK,("BCAST(IF) %s\n", A2S(&IF->Broadcast)));
 971
 972     /* Get maximum link speed */
 973     NdisStatus = NDISCall(Adapter,
 974                           NdisRequestQueryInformation,
 975                           OID_GEN_LINK_SPEED,
 976                           &IF->Speed,
 977                           sizeof(UINT));
 978
 979     if( !NT_SUCCESS(NdisStatus) )
 980         IF->Speed = IP_DEFAULT_LINK_SPEED;
 981
 982     /* Register interface with IP layer */
 983     IPRegisterInterface(IF);
 984
 985     /* Set packet filter so we can send and receive packets */
 986     NdisStatus = NDISCall(Adapter,
 987                           NdisRequestSetInformation,
 988                           OID_GEN_CURRENT_PACKET_FILTER,
 989                           &Adapter->PacketFilter,
 990                           sizeof(UINT));
 991
 992     if (NdisStatus != NDIS_STATUS_SUCCESS) {
 993         TI_DbgPrint(DEBUG_DATALINK, ("Could not set packet filter (0x%X).\n", NdisStatus));
 994         IPUnregisterInterface(IF);
 995         IPDestroyInterface(IF);
 996         return FALSE;
 997     }
 998
 999     Adapter->Context = IF;
1000     Adapter->State = LAN_STATE_STARTED;
1001     return TRUE;
1002 }
1003
1004
1005 VOID UnbindAdapter(
1006     PLAN_ADAPTER Adapter)
1007 /*
1008  * FUNCTION: Unbinds a LAN adapter from IP layer
1009  * ARGUMENTS:
1010  *     Adapter = Pointer to LAN_ADAPTER structure
1011  */
1012 {
1013     TI_DbgPrint(DEBUG_DATALINK, ("Called.\n"));
1014
1015     if (Adapter->State == LAN_STATE_STARTED) {
1016         PIP_INTERFACE IF = Adapter->Context;
1017
1018         IPUnregisterInterface(IF);
1019
1020         IPDestroyInterface(IF);
1021     }
1022 }
1023
1024
1025 NDIS_STATUS LANRegisterAdapter(
1026     PNDIS_STRING AdapterName,
1027     PNDIS_STRING RegistryPath)
1028 /*
1029  * FUNCTION: Registers protocol with an NDIS adapter
1030  * ARGUMENTS:
1031  *     AdapterName = Pointer to string with name of adapter to register
1032  *     Adapter     = Address of pointer to a LAN_ADAPTER structure
1033  * RETURNS:
1034  *     Status of operation
1035  */
1036 {
1037     PLAN_ADAPTER IF;
1038     NDIS_STATUS NdisStatus;
1039     NDIS_STATUS OpenStatus;
1040     UINT MediaIndex;
1041     NDIS_MEDIUM MediaArray[MAX_MEDIA];
1042     UINT AddressOID;
1043     UINT Speed;
1044
1045     TI_DbgPrint(DEBUG_DATALINK, ("Called.\n"));
1046
1047     IF = exAllocatePool(NonPagedPool, sizeof(LAN_ADAPTER));
1048     if (!IF) {
1049         TI_DbgPrint(MIN_TRACE, ("Insufficient resources.\n"));
1050         return NDIS_STATUS_RESOURCES;
1051     }
1052
1053     RtlZeroMemory(IF, sizeof(LAN_ADAPTER));
1054
1055     /* Put adapter in stopped state */
1056     IF->State = LAN_STATE_STOPPED;
1057
1058     /* Initialize protecting spin lock */
1059     KeInitializeSpinLock(&IF->Lock);
1060
1061     KeInitializeEvent(&IF->Event, SynchronizationEvent, FALSE);
1062
1063     /* Initialize array with media IDs we support */
1064     MediaArray[MEDIA_ETH] = NdisMedium802_3;
1065
1066     TI_DbgPrint(DEBUG_DATALINK,("opening adapter %wZ\n", AdapterName));
1067     /* Open the adapter. */
1068     NdisOpenAdapter(&NdisStatus,
1069                     &OpenStatus,
1070                     &IF->NdisHandle,
1071                     &MediaIndex,
1072                     MediaArray,
1073                     MAX_MEDIA,
1074                     NdisProtocolHandle,
1075                     IF,
1076                     AdapterName,
1077                     0,
1078                     NULL);
1079
1080     /* Wait until the adapter is opened */
1081     if (NdisStatus == NDIS_STATUS_PENDING)
1082         KeWaitForSingleObject(&IF->Event, UserRequest, KernelMode, FALSE, NULL);
1083     else if (NdisStatus != NDIS_STATUS_SUCCESS) {
1084         TI_DbgPrint(DEBUG_DATALINK,("denying adapter %wZ\n", AdapterName));
1085         exFreePool(IF);
1086         return NdisStatus;
1087     }
1088
1089     IF->Media = MediaArray[MediaIndex];
1090
1091     /* Fill LAN_ADAPTER structure with some adapter specific information */
1092     switch (IF->Media) {
1093     case NdisMedium802_3:
1094         IF->HWAddressLength = IEEE_802_ADDR_LENGTH;
1095         IF->BCastMask       = BCAST_ETH_MASK;
1096         IF->BCastCheck      = BCAST_ETH_CHECK;
1097         IF->BCastOffset     = BCAST_ETH_OFFSET;
1098         IF->HeaderSize      = sizeof(ETH_HEADER);
1099         IF->MinFrameSize    = 60;
1100         AddressOID          = OID_802_3_CURRENT_ADDRESS;
1101         IF->PacketFilter    =
1102             NDIS_PACKET_TYPE_BROADCAST |
1103             NDIS_PACKET_TYPE_DIRECTED  |
1104             NDIS_PACKET_TYPE_MULTICAST;
1105         break;
1106
1107     default:
1108         /* Unsupported media */
1109         TI_DbgPrint(MIN_TRACE, ("Unsupported media.\n"));
1110         exFreePool(IF);
1111         return NDIS_STATUS_NOT_SUPPORTED;
1112     }
1113
1114     /* Get maximum frame size */
1115     NdisStatus = NDISCall(IF,
1116                           NdisRequestQueryInformation,
1117                           OID_GEN_MAXIMUM_FRAME_SIZE,
1118                           &IF->MTU,
1119                           sizeof(UINT));
1120     if (NdisStatus != NDIS_STATUS_SUCCESS) {
1121         TI_DbgPrint(DEBUG_DATALINK,("denying adapter %wZ (NDISCall)\n", AdapterName));
1122         exFreePool(IF);
1123         return NdisStatus;
1124     }
1125
1126     /* Get maximum packet size */
1127     NdisStatus = NDISCall(IF,
1128                           NdisRequestQueryInformation,
1129                           OID_GEN_MAXIMUM_TOTAL_SIZE,
1130                           &IF->MaxPacketSize,
1131                           sizeof(UINT));
1132     if (NdisStatus != NDIS_STATUS_SUCCESS) {
1133         TI_DbgPrint(MIN_TRACE, ("Query for maximum packet size failed.\n"));
1134         exFreePool(IF);
1135         return NdisStatus;
1136     }
1137
1138     /* Get maximum number of packets we can pass to NdisSend(Packets) at one time */
1139     NdisStatus = NDISCall(IF,
1140                           NdisRequestQueryInformation,
1141                           OID_GEN_MAXIMUM_SEND_PACKETS,
1142                           &IF->MaxSendPackets,
1143                           sizeof(UINT));
1144     if (NdisStatus != NDIS_STATUS_SUCCESS)
1145         /* Legacy NIC drivers may not support this query, if it fails we
1146            assume it can send at least one packet per call to NdisSend(Packets) */
1147         IF->MaxSendPackets = 1;
1148
1149     /* Get current hardware address */
1150     NdisStatus = NDISCall(IF,
1151                           NdisRequestQueryInformation,
1152                           AddressOID,
1153                           &IF->HWAddress,
1154                           IF->HWAddressLength);
1155     if (NdisStatus != NDIS_STATUS_SUCCESS) {
1156         TI_DbgPrint(MIN_TRACE, ("Query for current hardware address failed.\n"));
1157         exFreePool(IF);
1158         return NdisStatus;
1159     }
1160
1161     /* Get maximum link speed */
1162     NdisStatus = NDISCall(IF,
1163                           NdisRequestQueryInformation,
1164                           OID_GEN_LINK_SPEED,
1165                           &Speed,
1166                           sizeof(UINT));
1167     if (NdisStatus != NDIS_STATUS_SUCCESS) {
1168         TI_DbgPrint(MIN_TRACE, ("Query for maximum link speed failed.\n"));
1169         exFreePool(IF);
1170         return NdisStatus;
1171     }
1172
1173     /* Convert returned link speed to bps (it is in 100bps increments) */
1174     IF->Speed = Speed * 100L;
1175
1176     /* Bind adapter to IP layer */
1177     if( !BindAdapter(IF, RegistryPath) ) {
1178         TI_DbgPrint(DEBUG_DATALINK,("denying adapter %wZ (BindAdapter)\n", AdapterName));
1179         exFreePool(IF);
1180         return NDIS_STATUS_NOT_ACCEPTED;
1181     }
1182
1183     /* Add adapter to the adapter list */
1184     ExInterlockedInsertTailList(&AdapterListHead,
1185                                 &IF->ListEntry,
1186                                 &AdapterListLock);
1187
1188     TI_DbgPrint(DEBUG_DATALINK, ("Leaving.\n"));
1189
1190     return NDIS_STATUS_SUCCESS;
1191 }
1192
1193
1194 NDIS_STATUS LANUnregisterAdapter(
1195     PLAN_ADAPTER Adapter)
1196 /*
1197  * FUNCTION: Unregisters protocol with NDIS adapter
1198  * ARGUMENTS:
1199  *     Adapter = Pointer to a LAN_ADAPTER structure
1200  * RETURNS:
1201  *     Status of operation
1202  */
1203 {
1204     KIRQL OldIrql;
1205     NDIS_HANDLE NdisHandle;
1206     NDIS_STATUS NdisStatus = NDIS_STATUS_SUCCESS;
1207
1208     TI_DbgPrint(DEBUG_DATALINK, ("Called.\n"));
1209
1210     /* Unlink the adapter from the list */
1211     RemoveEntryList(&Adapter->ListEntry);
1212
1213     /* Unbind adapter from IP layer */
1214     UnbindAdapter(Adapter);
1215
1216     TcpipAcquireSpinLock(&Adapter->Lock, &OldIrql);
1217     NdisHandle = Adapter->NdisHandle;
1218     if (NdisHandle) {
1219         Adapter->NdisHandle = NULL;
1220         TcpipReleaseSpinLock(&Adapter->Lock, OldIrql);
1221
1222         NdisCloseAdapter(&NdisStatus, NdisHandle);
1223         if (NdisStatus == NDIS_STATUS_PENDING) {
1224             TcpipWaitForSingleObject(&Adapter->Event,
1225                                      UserRequest,
1226                                      KernelMode,
1227                                      FALSE,
1228                                      NULL);
1229             NdisStatus = Adapter->NdisStatus;
1230         }
1231     } else
1232         TcpipReleaseSpinLock(&Adapter->Lock, OldIrql);
1233
1234     FreeAdapter(Adapter);
1235
1236     return NdisStatus;
1237 }
1238
1239
1240 NTSTATUS LANRegisterProtocol(
1241     PNDIS_STRING Name)
1242 /*
1243  * FUNCTION: Registers this protocol driver with NDIS
1244  * ARGUMENTS:
1245  *     Name = Name of this protocol driver
1246  * RETURNS:
1247  *     Status of operation
1248  */
1249 {
1250     NDIS_STATUS NdisStatus;
1251     NDIS_PROTOCOL_CHARACTERISTICS ProtChars;
1252
1253     TI_DbgPrint(DEBUG_DATALINK, ("Called.\n"));
1254
1255     InitializeListHead(&AdapterListHead);
1256     KeInitializeSpinLock(&AdapterListLock);
1257
1258     /* Set up protocol characteristics */
1259     RtlZeroMemory(&ProtChars, sizeof(NDIS_PROTOCOL_CHARACTERISTICS));
1260     ProtChars.MajorNdisVersion               = NDIS_VERSION_MAJOR;
1261     ProtChars.MinorNdisVersion               = NDIS_VERSION_MINOR;
1262     ProtChars.Name.Length                    = Name->Length;
1263     ProtChars.Name.Buffer                    = Name->Buffer;
1264     ProtChars.Name.MaximumLength             = Name->MaximumLength;
1265     ProtChars.OpenAdapterCompleteHandler     = ProtocolOpenAdapterComplete;
1266     ProtChars.CloseAdapterCompleteHandler    = ProtocolCloseAdapterComplete;
1267     ProtChars.ResetCompleteHandler           = ProtocolResetComplete;
1268     ProtChars.RequestCompleteHandler         = ProtocolRequestComplete;
1269     ProtChars.SendCompleteHandler            = ProtocolSendComplete;
1270     ProtChars.TransferDataCompleteHandler    = ProtocolTransferDataComplete;
1271     ProtChars.ReceiveHandler                 = ProtocolReceive;
1272     ProtChars.ReceiveCompleteHandler         = ProtocolReceiveComplete;
1273     ProtChars.StatusHandler                  = ProtocolStatus;
1274     ProtChars.StatusCompleteHandler          = ProtocolStatusComplete;
1275     ProtChars.BindAdapterHandler             = ProtocolBindAdapter;
1276
1277     /* Try to register protocol */
1278     NdisRegisterProtocol(&NdisStatus,
1279                          &NdisProtocolHandle,
1280                          &ProtChars,
1281                          sizeof(NDIS_PROTOCOL_CHARACTERISTICS));
1282     if (NdisStatus != NDIS_STATUS_SUCCESS)
1283     {
1284         TI_DbgPrint(DEBUG_DATALINK, ("NdisRegisterProtocol failed, status 0x%x\n", NdisStatus));
1285         return (NTSTATUS)NdisStatus;
1286     }
1287
1288     ProtocolRegistered = TRUE;
1289
1290     return STATUS_SUCCESS;
1291 }
1292
1293
1294 VOID LANUnregisterProtocol(
1295     VOID)
1296 /*
1297  * FUNCTION: Unregisters this protocol driver with NDIS
1298  * NOTES: Does not care wether we are already registered
1299  */
1300 {
1301     TI_DbgPrint(DEBUG_DATALINK, ("Called.\n"));
1302
1303     if (ProtocolRegistered) {
1304         NDIS_STATUS NdisStatus;
1305         PLIST_ENTRY CurrentEntry;
1306         PLIST_ENTRY NextEntry;
1307         PLAN_ADAPTER Current;
1308         KIRQL OldIrql;
1309
1310         TcpipAcquireSpinLock(&AdapterListLock, &OldIrql);
1311
1312         /* Search the list and remove every adapter we find */
1313         CurrentEntry = AdapterListHead.Flink;
1314         while (CurrentEntry != &AdapterListHead) {
1315             NextEntry = CurrentEntry->Flink;
1316             Current = CONTAINING_RECORD(CurrentEntry, LAN_ADAPTER, ListEntry);
1317             /* Unregister it */
1318             LANUnregisterAdapter(Current);
1319             CurrentEntry = NextEntry;
1320         }
1321
1322         TcpipReleaseSpinLock(&AdapterListLock, OldIrql);
1323
1324         NdisDeregisterProtocol(&NdisStatus, NdisProtocolHandle);
1325         ProtocolRegistered = FALSE;
1326     }
1327 }
1328
1329 /* EOF */