LUFA/Drivers/USB/Class/Host/RNDIS.c

   1 /*
   2              LUFA Library
   3      Copyright (C) Dean Camera, 2009.
   4
   5   dean [at] fourwalledcubicle [dot] com
   6       www.fourwalledcubicle.com
   7 */
   8
   9 /*
  10   Copyright 2009  Dean Camera (dean [at] fourwalledcubicle [dot] com)
  11
  12   Permission to use, copy, modify, and distribute this software
  13   and its documentation for any purpose and without fee is hereby
  14   granted, provided that the above copyright notice appear in all
  15   copies and that both that the copyright notice and this
  16   permission notice and warranty disclaimer appear in supporting
  17   documentation, and that the name of the author not be used in
  18   advertising or publicity pertaining to distribution of the
  19   software without specific, written prior permission.
  20
  21   The author disclaim all warranties with regard to this
  22   software, including all implied warranties of merchantability
  23   and fitness.  In no event shall the author be liable for any
  24   special, indirect or consequential damages or any damages
  25   whatsoever resulting from loss of use, data or profits, whether
  26   in an action of contract, negligence or other tortious action,
  27   arising out of or in connection with the use or performance of
  28   this software.
  29 */
  30
  31 #include "../../HighLevel/USBMode.h"
  32 #if defined(USB_CAN_BE_HOST)
  33
  34 #define  INCLUDE_FROM_RNDIS_CLASS_HOST_C
  35 #include "RNDIS.h"
  36
  37 uint8_t RNDIS_Host_ConfigurePipes(USB_ClassInfo_RNDIS_Host_t* const RNDISInterfaceInfo, uint16_t ConfigDescriptorSize,
  38                                 void* ConfigDescriptorData)
  39 {
  40         uint8_t FoundEndpoints = 0;
  41
  42         memset(&RNDISInterfaceInfo->State, 0x00, sizeof(RNDISInterfaceInfo->State));
  43
  44         if (DESCRIPTOR_TYPE(ConfigDescriptorData) != DTYPE_Configuration)
  45           return RNDIS_ENUMERROR_InvalidConfigDescriptor;
  46
  47         if (USB_GetNextDescriptorComp(&ConfigDescriptorSize, &ConfigDescriptorData,
  48                                       DComp_RNDIS_Host_NextRNDISControlInterface) != DESCRIPTOR_SEARCH_COMP_Found)
  49         {
  50                 return RNDIS_ENUMERROR_NoRNDISInterfaceFound;
  51         }
  52
  53         RNDISInterfaceInfo->State.ControlInterfaceNumber = DESCRIPTOR_CAST(ConfigDescriptorData, USB_Descriptor_Interface_t).InterfaceNumber;
  54
  55         while (FoundEndpoints != (RNDIS_FOUND_NOTIFICATION_IN | RNDIS_FOUND_DATAPIPE_IN | RNDIS_FOUND_DATAPIPE_OUT))
  56         {
  57                 if (USB_GetNextDescriptorComp(&ConfigDescriptorSize, &ConfigDescriptorData,
  58                                               DComp_RNDIS_Host_NextRNDISInterfaceEndpoint) != DESCRIPTOR_SEARCH_COMP_Found)
  59                 {
  60                         if (FoundEndpoints & RNDIS_FOUND_NOTIFICATION_IN)
  61                         {
  62                                 if (USB_GetNextDescriptorComp(&ConfigDescriptorSize, &ConfigDescriptorData,
  63                                                               DComp_RNDIS_Host_NextRNDISDataInterface) != DESCRIPTOR_SEARCH_COMP_Found)
  64                                 {
  65                                         return RNDIS_ENUMERROR_NoRNDISInterfaceFound;
  66                                 }
  67                         }
  68                         else
  69                         {
  70                                 FoundEndpoints = 0;
  71
  72                                 Pipe_SelectPipe(RNDISInterfaceInfo->Config.DataINPipeNumber);
  73                                 Pipe_DisablePipe();
  74                                 Pipe_SelectPipe(RNDISInterfaceInfo->Config.DataOUTPipeNumber);
  75                                 Pipe_DisablePipe();
  76                                 Pipe_SelectPipe(RNDISInterfaceInfo->Config.NotificationPipeNumber);
  77                                 Pipe_DisablePipe();
  78
  79                                 if (USB_GetNextDescriptorComp(&ConfigDescriptorSize, &ConfigDescriptorData,
  80                                                               DComp_RNDIS_Host_NextRNDISControlInterface) != DESCRIPTOR_SEARCH_COMP_Found)
  81                                 {
  82                                         return RNDIS_ENUMERROR_NoRNDISInterfaceFound;
  83                                 }
  84                         }
  85
  86                         if (USB_GetNextDescriptorComp(&ConfigDescriptorSize, &ConfigDescriptorData,
  87                                                       DComp_RNDIS_Host_NextRNDISInterfaceEndpoint) != DESCRIPTOR_SEARCH_COMP_Found)
  88                         {
  89                                 return RNDIS_ENUMERROR_EndpointsNotFound;
  90                         }
  91                 }
  92
  93                 USB_Descriptor_Endpoint_t* EndpointData = DESCRIPTOR_PCAST(ConfigDescriptorData, USB_Descriptor_Endpoint_t);
  94
  95                 if ((EndpointData->Attributes & EP_TYPE_MASK) == EP_TYPE_INTERRUPT)
  96                 {
  97                         if (EndpointData->EndpointAddress & ENDPOINT_DESCRIPTOR_DIR_IN)
  98                         {
  99                                 Pipe_ConfigurePipe(RNDISInterfaceInfo->Config.NotificationPipeNumber, EP_TYPE_INTERRUPT, PIPE_TOKEN_IN,
 100                                                                    EndpointData->EndpointAddress, EndpointData->EndpointSize,
 101                                                                    RNDISInterfaceInfo->Config.NotificationPipeDoubleBank ? PIPE_BANK_DOUBLE : PIPE_BANK_SINGLE);
 102                                 RNDISInterfaceInfo->State.NotificationPipeSize = EndpointData->EndpointSize;
 103
 104                                 Pipe_SetInterruptPeriod(EndpointData->PollingIntervalMS);
 105
 106                                 FoundEndpoints |= RNDIS_FOUND_NOTIFICATION_IN;
 107                         }
 108                 }
 109                 else
 110                 {
 111                         if (EndpointData->EndpointAddress & ENDPOINT_DESCRIPTOR_DIR_IN)
 112                         {
 113                                 if (Pipe_IsEndpointBound(EndpointData->EndpointAddress))
 114                                 {
 115                                         RNDISInterfaceInfo->State.BidirectionalDataEndpoints = true;
 116                                         Pipe_DisablePipe();
 117                                 }
 118
 119                                 Pipe_ConfigurePipe(RNDISInterfaceInfo->Config.DataINPipeNumber, EP_TYPE_BULK, PIPE_TOKEN_IN,
 120                                                    EndpointData->EndpointAddress, EndpointData->EndpointSize,
 121                                                    RNDISInterfaceInfo->Config.DataINPipeDoubleBank ? PIPE_BANK_DOUBLE : PIPE_BANK_SINGLE);
 122                                 RNDISInterfaceInfo->State.DataINPipeSize = EndpointData->EndpointSize;
 123
 124                                 FoundEndpoints |= RNDIS_FOUND_DATAPIPE_IN;
 125                         }
 126                         else
 127                         {
 128                                 if (Pipe_IsEndpointBound(EndpointData->EndpointAddress))
 129                                 {
 130                                         RNDISInterfaceInfo->State.BidirectionalDataEndpoints = true;
 131                                 }
 132                                 else
 133                                 {
 134                                         Pipe_ConfigurePipe(RNDISInterfaceInfo->Config.DataOUTPipeNumber, EP_TYPE_BULK, PIPE_TOKEN_OUT,
 135                                                            EndpointData->EndpointAddress, EndpointData->EndpointSize,
 136                                                            RNDISInterfaceInfo->Config.DataOUTPipeDoubleBank ? PIPE_BANK_DOUBLE : PIPE_BANK_SINGLE);
 137                                 }
 138
 139                                 RNDISInterfaceInfo->State.DataOUTPipeSize = EndpointData->EndpointSize;
 140
 141                                 FoundEndpoints |= RNDIS_FOUND_DATAPIPE_OUT;
 142                         }
 143                 }
 144         }
 145
 146         RNDISInterfaceInfo->State.IsActive = true;
 147         return RNDIS_ENUMERROR_NoError;
 148 }
 149
 150 static uint8_t DComp_RNDIS_Host_NextRNDISControlInterface(void* const CurrentDescriptor)
 151 {
 152         if (DESCRIPTOR_TYPE(CurrentDescriptor) == DTYPE_Interface)
 153         {
 154                 USB_Descriptor_Interface_t* CurrentInterface = DESCRIPTOR_PCAST(CurrentDescriptor,
 155                                                                                 USB_Descriptor_Interface_t);
 156
 157                 if ((CurrentInterface->Class    == RNDIS_CONTROL_CLASS)    &&
 158                     (CurrentInterface->SubClass == RNDIS_CONTROL_SUBCLASS) &&
 159                         (CurrentInterface->Protocol == RNDIS_CONTROL_PROTOCOL))
 160                 {
 161                         return DESCRIPTOR_SEARCH_Found;
 162                 }
 163         }
 164
 165         return DESCRIPTOR_SEARCH_NotFound;
 166 }
 167
 168 static uint8_t DComp_RNDIS_Host_NextRNDISDataInterface(void* const CurrentDescriptor)
 169 {
 170         if (DESCRIPTOR_TYPE(CurrentDescriptor) == DTYPE_Interface)
 171         {
 172                 USB_Descriptor_Interface_t* CurrentInterface = DESCRIPTOR_PCAST(CurrentDescriptor,
 173                                                                                 USB_Descriptor_Interface_t);
 174
 175                 if ((CurrentInterface->Class    == RNDIS_DATA_CLASS)    &&
 176                     (CurrentInterface->SubClass == RNDIS_DATA_SUBCLASS) &&
 177                         (CurrentInterface->Protocol == RNDIS_DATA_PROTOCOL))
 178                 {
 179                         return DESCRIPTOR_SEARCH_Found;
 180                 }
 181         }
 182
 183         return DESCRIPTOR_SEARCH_NotFound;
 184 }
 185
 186 static uint8_t DComp_RNDIS_Host_NextRNDISInterfaceEndpoint(void* const CurrentDescriptor)
 187 {
 188         if (DESCRIPTOR_TYPE(CurrentDescriptor) == DTYPE_Endpoint)
 189         {
 190                 USB_Descriptor_Endpoint_t* CurrentEndpoint = DESCRIPTOR_PCAST(CurrentDescriptor,
 191                                                                               USB_Descriptor_Endpoint_t);
 192
 193                 uint8_t EndpointType = (CurrentEndpoint->Attributes & EP_TYPE_MASK);
 194
 195                 if ((EndpointType == EP_TYPE_BULK) || (EndpointType == EP_TYPE_INTERRUPT))
 196                 {
 197                         return DESCRIPTOR_SEARCH_Found;
 198                 }
 199         }
 200         else if (DESCRIPTOR_TYPE(CurrentDescriptor) == DTYPE_Interface)
 201         {
 202                 return DESCRIPTOR_SEARCH_Fail;
 203         }
 204
 205         return DESCRIPTOR_SEARCH_NotFound;
 206 }
 207
 208 void RNDIS_Host_USBTask(USB_ClassInfo_RNDIS_Host_t* const RNDISInterfaceInfo)
 209 {
 210
 211 }
 212
 213 static uint8_t RNDIS_SendEncapsulatedCommand(USB_ClassInfo_RNDIS_Host_t* const RNDISInterfaceInfo,
 214                                              void* Buffer, uint16_t Length)
 215 {
 216         USB_ControlRequest = (USB_Request_Header_t)
 217                 {
 218                         .bmRequestType = (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_INTERFACE),
 219                         .bRequest      = REQ_SendEncapsulatedCommand,
 220                         .wValue        = 0,
 221                         .wIndex        = RNDISInterfaceInfo->State.ControlInterfaceNumber,
 222                         .wLength       = Length,
 223                 };
 224
 225         Pipe_SelectPipe(PIPE_CONTROLPIPE);
 226         return USB_Host_SendControlRequest(Buffer);
 227 }
 228
 229 static uint8_t RNDIS_GetEncapsulatedResponse(USB_ClassInfo_RNDIS_Host_t* const RNDISInterfaceInfo,
 230                                              void* Buffer, uint16_t Length)
 231 {
 232         USB_ControlRequest = (USB_Request_Header_t)
 233                 {
 234                         .bmRequestType = (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_INTERFACE),
 235                         .bRequest      = REQ_GetEncapsulatedResponse,
 236                         .wValue        = 0,
 237                         .wIndex        = RNDISInterfaceInfo->State.ControlInterfaceNumber,
 238                         .wLength       = Length,
 239                 };
 240
 241         Pipe_SelectPipe(PIPE_CONTROLPIPE);
 242         return USB_Host_SendControlRequest(Buffer);
 243 }
 244
 245 uint8_t RNDIS_Host_SendKeepAlive(USB_ClassInfo_RNDIS_Host_t* const RNDISInterfaceInfo)
 246 {
 247         uint8_t ErrorCode;
 248
 249         RNDIS_KeepAlive_Message_t  KeepAliveMessage;
 250         RNDIS_KeepAlive_Complete_t KeepAliveMessageResponse;
 251
 252         KeepAliveMessage.MessageType     = REMOTE_NDIS_KEEPALIVE_MSG;
 253         KeepAliveMessage.MessageLength   = sizeof(RNDIS_KeepAlive_Message_t);
 254         KeepAliveMessage.RequestId       = RNDISInterfaceInfo->State.RequestID++;
 255
 256         if ((ErrorCode = RNDIS_SendEncapsulatedCommand(RNDISInterfaceInfo, &KeepAliveMessage,
 257                                                        sizeof(RNDIS_KeepAlive_Message_t))) != HOST_SENDCONTROL_Successful)
 258         {
 259                 return ErrorCode;
 260         }
 261
 262         if ((ErrorCode = RNDIS_GetEncapsulatedResponse(RNDISInterfaceInfo, &KeepAliveMessageResponse,
 263                                                        sizeof(RNDIS_KeepAlive_Complete_t))) != HOST_SENDCONTROL_Successful)
 264         {
 265                 return ErrorCode;
 266         }
 267
 268         return HOST_SENDCONTROL_Successful;
 269 }
 270
 271 uint8_t RNDIS_Host_InitializeDevice(USB_ClassInfo_RNDIS_Host_t* const RNDISInterfaceInfo)
 272 {
 273         uint8_t ErrorCode;
 274
 275         RNDIS_Initialize_Message_t  InitMessage;
 276         RNDIS_Initialize_Complete_t InitMessageResponse;
 277
 278         InitMessage.MessageType     = REMOTE_NDIS_INITIALIZE_MSG;
 279         InitMessage.MessageLength   = sizeof(RNDIS_Initialize_Message_t);
 280         InitMessage.RequestId       = RNDISInterfaceInfo->State.RequestID++;
 281
 282         InitMessage.MajorVersion    = REMOTE_NDIS_VERSION_MAJOR;
 283         InitMessage.MinorVersion    = REMOTE_NDIS_VERSION_MINOR;
 284         InitMessage.MaxTransferSize = RNDISInterfaceInfo->Config.HostMaxPacketSize;
 285
 286         if ((ErrorCode = RNDIS_SendEncapsulatedCommand(RNDISInterfaceInfo, &InitMessage,
 287                                                        sizeof(RNDIS_Initialize_Message_t))) != HOST_SENDCONTROL_Successful)
 288         {
 289                 return ErrorCode;
 290         }
 291
 292         if ((ErrorCode = RNDIS_GetEncapsulatedResponse(RNDISInterfaceInfo, &InitMessageResponse,
 293                                                        sizeof(RNDIS_Initialize_Complete_t))) != HOST_SENDCONTROL_Successful)
 294         {
 295                 return ErrorCode;
 296         }
 297
 298         if (InitMessageResponse.Status != REMOTE_NDIS_STATUS_SUCCESS)
 299           return RNDIS_COMMAND_FAILED;
 300
 301         RNDISInterfaceInfo->State.DeviceMaxPacketSize = InitMessageResponse.MaxTransferSize;
 302
 303         return HOST_SENDCONTROL_Successful;
 304 }
 305
 306 uint8_t RNDIS_Host_SetRNDISProperty(USB_ClassInfo_RNDIS_Host_t* const RNDISInterfaceInfo, uint32_t Oid, void* Buffer, uint16_t Length)
 307 {
 308         uint8_t ErrorCode;
 309
 310         struct
 311         {
 312                 RNDIS_Set_Message_t SetMessage;
 313                 uint8_t             ContigiousBuffer[Length];
 314         } SetMessageData;
 315
 316         RNDIS_Set_Complete_t SetMessageResponse;
 317
 318         SetMessageData.SetMessage.MessageType    = REMOTE_NDIS_SET_MSG;
 319         SetMessageData.SetMessage.MessageLength  = sizeof(RNDIS_Set_Message_t) + Length;
 320         SetMessageData.SetMessage.RequestId      = RNDISInterfaceInfo->State.RequestID++;
 321
 322         SetMessageData.SetMessage.Oid            = Oid;
 323         SetMessageData.SetMessage.InformationBufferLength = Length;
 324         SetMessageData.SetMessage.InformationBufferOffset = (sizeof(RNDIS_Set_Message_t) - sizeof(RNDIS_Message_Header_t));
 325         SetMessageData.SetMessage.DeviceVcHandle = 0;
 326
 327         memcpy(&SetMessageData.ContigiousBuffer, Buffer, Length);
 328
 329         if ((ErrorCode = RNDIS_SendEncapsulatedCommand(RNDISInterfaceInfo, &SetMessageData,
 330                                                        SetMessageData.SetMessage.MessageLength)) != HOST_SENDCONTROL_Successful)
 331         {
 332                 return ErrorCode;
 333         }
 334
 335         if ((ErrorCode = RNDIS_GetEncapsulatedResponse(RNDISInterfaceInfo, &SetMessageResponse,
 336                                                        sizeof(RNDIS_Set_Complete_t))) != HOST_SENDCONTROL_Successful)
 337         {
 338                 return ErrorCode;
 339         }
 340
 341         if (SetMessageResponse.Status != REMOTE_NDIS_STATUS_SUCCESS)
 342           return RNDIS_COMMAND_FAILED;
 343
 344         return HOST_SENDCONTROL_Successful;
 345 }
 346
 347 uint8_t RNDIS_Host_QueryRNDISProperty(USB_ClassInfo_RNDIS_Host_t* const RNDISInterfaceInfo, uint32_t Oid, void* Buffer, uint16_t MaxLength)
 348 {
 349         uint8_t ErrorCode;
 350
 351         RNDIS_Query_Message_t QueryMessage;
 352
 353         struct
 354         {
 355                 RNDIS_Query_Complete_t QueryMessageResponse;
 356                 uint8_t                ContigiousBuffer[MaxLength];
 357         } QueryMessageResponseData;
 358
 359         QueryMessage.MessageType    = REMOTE_NDIS_QUERY_MSG;
 360         QueryMessage.MessageLength  = sizeof(RNDIS_Query_Message_t);
 361         QueryMessage.RequestId      = RNDISInterfaceInfo->State.RequestID++;
 362
 363         QueryMessage.Oid            = Oid;
 364         QueryMessage.InformationBufferLength = 0;
 365         QueryMessage.InformationBufferOffset = 0;
 366         QueryMessage.DeviceVcHandle = 0;
 367
 368         if ((ErrorCode = RNDIS_SendEncapsulatedCommand(RNDISInterfaceInfo, &QueryMessage,
 369                                                        sizeof(RNDIS_Query_Message_t))) != HOST_SENDCONTROL_Successful)
 370         {
 371                 return ErrorCode;
 372         }
 373
 374         if ((ErrorCode = RNDIS_GetEncapsulatedResponse(RNDISInterfaceInfo, &QueryMessageResponseData,
 375                                                        sizeof(QueryMessageResponseData))) != HOST_SENDCONTROL_Successful)
 376         {
 377                 return ErrorCode;
 378         }
 379
 380         if (QueryMessageResponseData.QueryMessageResponse.Status != REMOTE_NDIS_STATUS_SUCCESS)
 381           return RNDIS_COMMAND_FAILED;
 382
 383         memcpy(Buffer, &QueryMessageResponseData.ContigiousBuffer, MaxLength);
 384
 385         return HOST_SENDCONTROL_Successful;
 386 }
 387
 388 bool RNDIS_Host_IsPacketReceived(USB_ClassInfo_RNDIS_Host_t* const RNDISInterfaceInfo)
 389 {
 390         bool PacketWaiting;
 391
 392         if ((USB_HostState != HOST_STATE_Configured) || !(RNDISInterfaceInfo->State.IsActive))
 393           return false;
 394
 395         Pipe_SelectPipe(RNDISInterfaceInfo->Config.DataINPipeNumber);
 396         Pipe_SetPipeToken(PIPE_TOKEN_IN);
 397
 398         Pipe_Unfreeze();
 399
 400         PacketWaiting = Pipe_IsINReceived();
 401
 402         Pipe_Freeze();
 403
 404         return PacketWaiting;
 405 }
 406
 407 uint8_t RNDIS_Host_ReadPacket(USB_ClassInfo_RNDIS_Host_t* const RNDISInterfaceInfo, void* Buffer, uint16_t* PacketLength)
 408 {
 409         uint8_t ErrorCode;
 410
 411         if ((USB_HostState != HOST_STATE_Configured) || !(RNDISInterfaceInfo->State.IsActive))
 412           return PIPE_READYWAIT_DeviceDisconnected;
 413
 414         Pipe_SelectPipe(RNDISInterfaceInfo->Config.DataINPipeNumber);
 415         Pipe_SetPipeToken(PIPE_TOKEN_IN);
 416         Pipe_Unfreeze();
 417
 418         if (!(Pipe_IsReadWriteAllowed()))
 419         {
 420                 *PacketLength = 0;
 421                 Pipe_Freeze();
 422                 return PIPE_RWSTREAM_NoError;
 423         }
 424
 425         RNDIS_Packet_Message_t DeviceMessage;
 426
 427         if ((ErrorCode = Pipe_Read_Stream_LE(&DeviceMessage, sizeof(RNDIS_Packet_Message_t),
 428                                              NO_STREAM_CALLBACK)) != PIPE_RWSTREAM_NoError)
 429         {
 430                 return ErrorCode;
 431         }
 432
 433         *PacketLength = (uint16_t)DeviceMessage.DataLength;
 434
 435         Pipe_Discard_Stream(DeviceMessage.DataOffset - (sizeof(RNDIS_Packet_Message_t) - sizeof(RNDIS_Message_Header_t)),
 436                             NO_STREAM_CALLBACK);
 437
 438         Pipe_Read_Stream_LE(Buffer, *PacketLength, NO_STREAM_CALLBACK);
 439         Pipe_ClearIN();
 440
 441         Pipe_Freeze();
 442
 443         return PIPE_RWSTREAM_NoError;
 444 }
 445
 446 uint8_t RNDIS_Host_SendPacket(USB_ClassInfo_RNDIS_Host_t* const RNDISInterfaceInfo, void* Buffer, uint16_t PacketLength)
 447 {
 448         uint8_t ErrorCode;
 449
 450         if ((USB_HostState != HOST_STATE_Configured) || !(RNDISInterfaceInfo->State.IsActive))
 451           return PIPE_READYWAIT_DeviceDisconnected;
 452
 453         if (RNDISInterfaceInfo->State.BidirectionalDataEndpoints)
 454         {
 455                 Pipe_SelectPipe(RNDISInterfaceInfo->Config.DataINPipeNumber);
 456                 Pipe_SetPipeToken(PIPE_TOKEN_OUT);
 457         }
 458         else
 459         {
 460                 Pipe_SelectPipe(RNDISInterfaceInfo->Config.DataOUTPipeNumber);
 461         }
 462
 463         Pipe_Unfreeze();
 464
 465         RNDIS_Packet_Message_t DeviceMessage;
 466
 467         DeviceMessage.MessageType = REMOTE_NDIS_PACKET_MSG;
 468         DeviceMessage.MessageLength = (sizeof(RNDIS_Packet_Message_t) + PacketLength);
 469         DeviceMessage.DataOffset = (sizeof(RNDIS_Packet_Message_t) - sizeof(RNDIS_Message_Header_t));
 470         DeviceMessage.DataLength = PacketLength;
 471
 472         if ((ErrorCode = Pipe_Write_Stream_LE(&DeviceMessage, sizeof(RNDIS_Packet_Message_t),
 473                                               NO_STREAM_CALLBACK)) != PIPE_RWSTREAM_NoError)
 474         {
 475                 return ErrorCode;
 476         }
 477
 478         Pipe_Write_Stream_LE(Buffer, PacketLength, NO_STREAM_CALLBACK);
 479         Pipe_ClearOUT();
 480
 481         Pipe_Freeze();
 482
 483         if (RNDISInterfaceInfo->State.BidirectionalDataEndpoints)
 484           Pipe_SetPipeToken(PIPE_TOKEN_IN);
 485
 486         return PIPE_RWSTREAM_NoError;
 487 }
 488
 489 #endif