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

   1 /*
   2              LUFA Library
   3      Copyright (C) Dean Camera, 2011.
   4
   5   dean [at] fourwalledcubicle [dot] com
   6            www.lufa-lib.org
   7 */
   8
   9 /*
  10   Copyright 2011  Dean Camera (dean [at] fourwalledcubicle [dot] com)
  11
  12   Permission to use, copy, modify, distribute, and sell this
  13   software and its documentation for any purpose is hereby granted
  14   without fee, provided that the above copyright notice appear in
  15   all 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 #define  __INCLUDE_FROM_USB_DRIVER
  32 #include "../../Core/USBMode.h"
  33
  34 #if defined(USB_CAN_BE_DEVICE)
  35
  36 #define  __INCLUDE_FROM_RNDIS_DRIVER
  37 #define  __INCLUDE_FROM_RNDIS_DEVICE_C
  38 #include "RNDIS.h"
  39
  40 static const uint32_t PROGMEM AdapterSupportedOIDList[]  =
  41         {
  42                 OID_GEN_SUPPORTED_LIST,
  43                 OID_GEN_PHYSICAL_MEDIUM,
  44                 OID_GEN_HARDWARE_STATUS,
  45                 OID_GEN_MEDIA_SUPPORTED,
  46                 OID_GEN_MEDIA_IN_USE,
  47                 OID_GEN_MAXIMUM_FRAME_SIZE,
  48                 OID_GEN_MAXIMUM_TOTAL_SIZE,
  49                 OID_GEN_LINK_SPEED,
  50                 OID_GEN_TRANSMIT_BLOCK_SIZE,
  51                 OID_GEN_RECEIVE_BLOCK_SIZE,
  52                 OID_GEN_VENDOR_ID,
  53                 OID_GEN_VENDOR_DESCRIPTION,
  54                 OID_GEN_CURRENT_PACKET_FILTER,
  55                 OID_GEN_MAXIMUM_TOTAL_SIZE,
  56                 OID_GEN_MEDIA_CONNECT_STATUS,
  57                 OID_GEN_XMIT_OK,
  58                 OID_GEN_RCV_OK,
  59                 OID_GEN_XMIT_ERROR,
  60                 OID_GEN_RCV_ERROR,
  61                 OID_GEN_RCV_NO_BUFFER,
  62                 OID_802_3_PERMANENT_ADDRESS,
  63                 OID_802_3_CURRENT_ADDRESS,
  64                 OID_802_3_MULTICAST_LIST,
  65                 OID_802_3_MAXIMUM_LIST_SIZE,
  66                 OID_802_3_RCV_ERROR_ALIGNMENT,
  67                 OID_802_3_XMIT_ONE_COLLISION,
  68                 OID_802_3_XMIT_MORE_COLLISIONS,
  69         };
  70
  71 void RNDIS_Device_ProcessControlRequest(USB_ClassInfo_RNDIS_Device_t* const RNDISInterfaceInfo)
  72 {
  73         if (!(Endpoint_IsSETUPReceived()))
  74           return;
  75
  76         if (USB_ControlRequest.wIndex != RNDISInterfaceInfo->Config.ControlInterfaceNumber)
  77           return;
  78
  79         switch (USB_ControlRequest.bRequest)
  80         {
  81                 case RNDIS_REQ_SendEncapsulatedCommand:
  82                         if (USB_ControlRequest.bmRequestType == (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_INTERFACE))
  83                         {
  84                                 Endpoint_ClearSETUP();
  85                                 Endpoint_Read_Control_Stream_LE(RNDISInterfaceInfo->State.RNDISMessageBuffer, USB_ControlRequest.wLength);
  86                                 Endpoint_ClearIN();
  87
  88                                 RNDIS_Device_ProcessRNDISControlMessage(RNDISInterfaceInfo);
  89                         }
  90
  91                         break;
  92                 case RNDIS_REQ_GetEncapsulatedResponse:
  93                         if (USB_ControlRequest.bmRequestType == (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_INTERFACE))
  94                         {
  95                                 RNDIS_Message_Header_t* MessageHeader = (RNDIS_Message_Header_t*)&RNDISInterfaceInfo->State.RNDISMessageBuffer;
  96
  97                                 if (!(MessageHeader->MessageLength))
  98                                 {
  99                                         RNDISInterfaceInfo->State.RNDISMessageBuffer[0] = 0;
 100                                         MessageHeader->MessageLength = 1;
 101                                 }
 102
 103                                 Endpoint_ClearSETUP();
 104                                 Endpoint_Write_Control_Stream_LE(RNDISInterfaceInfo->State.RNDISMessageBuffer, MessageHeader->MessageLength);
 105                                 Endpoint_ClearOUT();
 106
 107                                 MessageHeader->MessageLength = 0;
 108                         }
 109
 110                         break;
 111         }
 112 }
 113
 114 bool RNDIS_Device_ConfigureEndpoints(USB_ClassInfo_RNDIS_Device_t* const RNDISInterfaceInfo)
 115 {
 116         memset(&RNDISInterfaceInfo->State, 0x00, sizeof(RNDISInterfaceInfo->State));
 117
 118         for (uint8_t EndpointNum = 1; EndpointNum < ENDPOINT_TOTAL_ENDPOINTS; EndpointNum++)
 119         {
 120                 uint16_t Size;
 121                 uint8_t  Type;
 122                 uint8_t  Direction;
 123                 bool     DoubleBanked;
 124
 125                 if (EndpointNum == RNDISInterfaceInfo->Config.DataINEndpointNumber)
 126                 {
 127                         Size         = RNDISInterfaceInfo->Config.DataINEndpointSize;
 128                         Direction    = ENDPOINT_DIR_IN;
 129                         Type         = EP_TYPE_BULK;
 130                         DoubleBanked = RNDISInterfaceInfo->Config.DataINEndpointDoubleBank;
 131                 }
 132                 else if (EndpointNum == RNDISInterfaceInfo->Config.DataOUTEndpointNumber)
 133                 {
 134                         Size         = RNDISInterfaceInfo->Config.DataOUTEndpointSize;
 135                         Direction    = ENDPOINT_DIR_OUT;
 136                         Type         = EP_TYPE_BULK;
 137                         DoubleBanked = RNDISInterfaceInfo->Config.DataOUTEndpointDoubleBank;
 138                 }
 139                 else if (EndpointNum == RNDISInterfaceInfo->Config.NotificationEndpointNumber)
 140                 {
 141                         Size         = RNDISInterfaceInfo->Config.NotificationEndpointSize;
 142                         Direction    = ENDPOINT_DIR_IN;
 143                         Type         = EP_TYPE_INTERRUPT;
 144                         DoubleBanked = RNDISInterfaceInfo->Config.NotificationEndpointDoubleBank;
 145                 }
 146                 else
 147                 {
 148                         continue;
 149                 }
 150
 151                 if (!(Endpoint_ConfigureEndpoint(EndpointNum, Type, Direction, Size,
 152                                                  DoubleBanked ? ENDPOINT_BANK_DOUBLE : ENDPOINT_BANK_SINGLE)))
 153                 {
 154                         return false;
 155                 }
 156         }
 157
 158         return true;
 159 }
 160
 161 void RNDIS_Device_USBTask(USB_ClassInfo_RNDIS_Device_t* const RNDISInterfaceInfo)
 162 {
 163         if (USB_DeviceState != DEVICE_STATE_Configured)
 164           return;
 165
 166         RNDIS_Message_Header_t* MessageHeader = (RNDIS_Message_Header_t*)&RNDISInterfaceInfo->State.RNDISMessageBuffer;
 167
 168         Endpoint_SelectEndpoint(RNDISInterfaceInfo->Config.NotificationEndpointNumber);
 169
 170         if (Endpoint_IsINReady() && RNDISInterfaceInfo->State.ResponseReady)
 171         {
 172                 USB_Request_Header_t Notification = (USB_Request_Header_t)
 173                         {
 174                                 .bmRequestType = (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_INTERFACE),
 175                                 .bRequest      = RNDIS_NOTIF_ResponseAvailable,
 176                                 .wValue        = 0,
 177                                 .wIndex        = 0,
 178                                 .wLength       = 0,
 179                         };
 180
 181                 Endpoint_Write_Stream_LE(&Notification, sizeof(USB_Request_Header_t), NULL);
 182
 183                 Endpoint_ClearIN();
 184
 185                 RNDISInterfaceInfo->State.ResponseReady = false;
 186         }
 187
 188         if ((RNDISInterfaceInfo->State.CurrRNDISState == RNDIS_Data_Initialized) && !(MessageHeader->MessageLength))
 189         {
 190                 RNDIS_Packet_Message_t RNDISPacketHeader;
 191
 192                 Endpoint_SelectEndpoint(RNDISInterfaceInfo->Config.DataOUTEndpointNumber);
 193
 194                 if (Endpoint_IsOUTReceived() && !(RNDISInterfaceInfo->State.FrameIN.FrameInBuffer))
 195                 {
 196                         Endpoint_Read_Stream_LE(&RNDISPacketHeader, sizeof(RNDIS_Packet_Message_t), NULL);
 197
 198                         if (RNDISPacketHeader.DataLength > ETHERNET_FRAME_SIZE_MAX)
 199                         {
 200                                 Endpoint_StallTransaction();
 201                                 return;
 202                         }
 203
 204                         Endpoint_Read_Stream_LE(RNDISInterfaceInfo->State.FrameIN.FrameData, RNDISPacketHeader.DataLength, NULL);
 205
 206                         Endpoint_ClearOUT();
 207
 208                         RNDISInterfaceInfo->State.FrameIN.FrameLength = RNDISPacketHeader.DataLength;
 209
 210                         RNDISInterfaceInfo->State.FrameIN.FrameInBuffer = true;
 211                 }
 212
 213                 Endpoint_SelectEndpoint(RNDISInterfaceInfo->Config.DataINEndpointNumber);
 214
 215                 if (Endpoint_IsINReady() && RNDISInterfaceInfo->State.FrameOUT.FrameInBuffer)
 216                 {
 217                         memset(&RNDISPacketHeader, 0, sizeof(RNDIS_Packet_Message_t));
 218
 219                         RNDISPacketHeader.MessageType   = REMOTE_NDIS_PACKET_MSG;
 220                         RNDISPacketHeader.MessageLength = (sizeof(RNDIS_Packet_Message_t) + RNDISInterfaceInfo->State.FrameOUT.FrameLength);
 221                         RNDISPacketHeader.DataOffset    = (sizeof(RNDIS_Packet_Message_t) - sizeof(RNDIS_Message_Header_t));
 222                         RNDISPacketHeader.DataLength    = RNDISInterfaceInfo->State.FrameOUT.FrameLength;
 223
 224                         Endpoint_Write_Stream_LE(&RNDISPacketHeader, sizeof(RNDIS_Packet_Message_t), NULL);
 225                         Endpoint_Write_Stream_LE(RNDISInterfaceInfo->State.FrameOUT.FrameData, RNDISPacketHeader.DataLength, NULL);
 226                         Endpoint_ClearIN();
 227
 228                         RNDISInterfaceInfo->State.FrameOUT.FrameInBuffer = false;
 229                 }
 230         }
 231 }
 232
 233 void RNDIS_Device_ProcessRNDISControlMessage(USB_ClassInfo_RNDIS_Device_t* const RNDISInterfaceInfo)
 234 {
 235         /* Note: Only a single buffer is used for both the received message and its response to save SRAM. Because of
 236                  this, response bytes should be filled in order so that they do not clobber unread data in the buffer. */
 237
 238         RNDIS_Message_Header_t* MessageHeader = (RNDIS_Message_Header_t*)&RNDISInterfaceInfo->State.RNDISMessageBuffer;
 239
 240         switch (MessageHeader->MessageType)
 241         {
 242                 case REMOTE_NDIS_INITIALIZE_MSG:
 243                         RNDISInterfaceInfo->State.ResponseReady = true;
 244
 245                         RNDIS_Initialize_Message_t*  INITIALIZE_Message  =
 246                                        (RNDIS_Initialize_Message_t*)&RNDISInterfaceInfo->State.RNDISMessageBuffer;
 247                         RNDIS_Initialize_Complete_t* INITIALIZE_Response =
 248                                        (RNDIS_Initialize_Complete_t*)&RNDISInterfaceInfo->State.RNDISMessageBuffer;
 249
 250                         INITIALIZE_Response->MessageType           = REMOTE_NDIS_INITIALIZE_CMPLT;
 251                         INITIALIZE_Response->MessageLength         = sizeof(RNDIS_Initialize_Complete_t);
 252                         INITIALIZE_Response->RequestId             = INITIALIZE_Message->RequestId;
 253                         INITIALIZE_Response->Status                = REMOTE_NDIS_STATUS_SUCCESS;
 254
 255                         INITIALIZE_Response->MajorVersion          = REMOTE_NDIS_VERSION_MAJOR;
 256                         INITIALIZE_Response->MinorVersion          = REMOTE_NDIS_VERSION_MINOR;
 257                         INITIALIZE_Response->DeviceFlags           = REMOTE_NDIS_DF_CONNECTIONLESS;
 258                         INITIALIZE_Response->Medium                = REMOTE_NDIS_MEDIUM_802_3;
 259                         INITIALIZE_Response->MaxPacketsPerTransfer = 1;
 260                         INITIALIZE_Response->MaxTransferSize       = (sizeof(RNDIS_Packet_Message_t) + ETHERNET_FRAME_SIZE_MAX);
 261                         INITIALIZE_Response->PacketAlignmentFactor = 0;
 262                         INITIALIZE_Response->AFListOffset          = 0;
 263                         INITIALIZE_Response->AFListSize            = 0;
 264
 265                         RNDISInterfaceInfo->State.CurrRNDISState = RNDIS_Initialized;
 266
 267                         break;
 268                 case REMOTE_NDIS_HALT_MSG:
 269                         RNDISInterfaceInfo->State.ResponseReady = false;
 270                         MessageHeader->MessageLength = 0;
 271
 272                         RNDISInterfaceInfo->State.CurrRNDISState = RNDIS_Uninitialized;
 273
 274                         break;
 275                 case REMOTE_NDIS_QUERY_MSG:
 276                         RNDISInterfaceInfo->State.ResponseReady = true;
 277
 278                         RNDIS_Query_Message_t*  QUERY_Message  = (RNDIS_Query_Message_t*)&RNDISInterfaceInfo->State.RNDISMessageBuffer;
 279                         RNDIS_Query_Complete_t* QUERY_Response = (RNDIS_Query_Complete_t*)&RNDISInterfaceInfo->State.RNDISMessageBuffer;
 280                         uint32_t                Query_Oid      = QUERY_Message->Oid;
 281
 282                         void*     QueryData = &RNDISInterfaceInfo->State.RNDISMessageBuffer[sizeof(RNDIS_Message_Header_t) +
 283                                                                                             QUERY_Message->InformationBufferOffset];
 284                         void*     ResponseData = &RNDISInterfaceInfo->State.RNDISMessageBuffer[sizeof(RNDIS_Query_Complete_t)];
 285                         uint16_t  ResponseSize;
 286
 287                         QUERY_Response->MessageType   = REMOTE_NDIS_QUERY_CMPLT;
 288                         QUERY_Response->MessageLength = sizeof(RNDIS_Query_Complete_t);
 289
 290                         if (RNDIS_Device_ProcessNDISQuery(RNDISInterfaceInfo, Query_Oid, QueryData, QUERY_Message->InformationBufferLength,
 291                                                           ResponseData, &ResponseSize))
 292                         {
 293                                 QUERY_Response->Status                  = REMOTE_NDIS_STATUS_SUCCESS;
 294                                 QUERY_Response->MessageLength          += ResponseSize;
 295
 296                                 QUERY_Response->InformationBufferLength = ResponseSize;
 297                                 QUERY_Response->InformationBufferOffset = (sizeof(RNDIS_Query_Complete_t) - sizeof(RNDIS_Message_Header_t));
 298                         }
 299                         else
 300                         {
 301                                 QUERY_Response->Status                  = REMOTE_NDIS_STATUS_NOT_SUPPORTED;
 302
 303                                 QUERY_Response->InformationBufferLength = 0;
 304                                 QUERY_Response->InformationBufferOffset = 0;
 305                         }
 306
 307                         break;
 308                 case REMOTE_NDIS_SET_MSG:
 309                         RNDISInterfaceInfo->State.ResponseReady = true;
 310
 311                         RNDIS_Set_Message_t*  SET_Message  = (RNDIS_Set_Message_t*)&RNDISInterfaceInfo->State.RNDISMessageBuffer;
 312                         RNDIS_Set_Complete_t* SET_Response = (RNDIS_Set_Complete_t*)&RNDISInterfaceInfo->State.RNDISMessageBuffer;
 313                         uint32_t              SET_Oid      = SET_Message->Oid;
 314
 315                         SET_Response->MessageType   = REMOTE_NDIS_SET_CMPLT;
 316                         SET_Response->MessageLength = sizeof(RNDIS_Set_Complete_t);
 317                         SET_Response->RequestId     = SET_Message->RequestId;
 318
 319                         void* SetData = &RNDISInterfaceInfo->State.RNDISMessageBuffer[sizeof(RNDIS_Message_Header_t) +
 320                                                                                       SET_Message->InformationBufferOffset];
 321
 322                         SET_Response->Status = RNDIS_Device_ProcessNDISSet(RNDISInterfaceInfo, SET_Oid, SetData,
 323                                                                            SET_Message->InformationBufferLength) ?
 324                                                                            REMOTE_NDIS_STATUS_SUCCESS : REMOTE_NDIS_STATUS_NOT_SUPPORTED;
 325                         break;
 326                 case REMOTE_NDIS_RESET_MSG:
 327                         RNDISInterfaceInfo->State.ResponseReady = true;
 328
 329                         RNDIS_Reset_Complete_t* RESET_Response = (RNDIS_Reset_Complete_t*)&RNDISInterfaceInfo->State.RNDISMessageBuffer;
 330
 331                         RESET_Response->MessageType     = REMOTE_NDIS_RESET_CMPLT;
 332                         RESET_Response->MessageLength   = sizeof(RNDIS_Reset_Complete_t);
 333                         RESET_Response->Status          = REMOTE_NDIS_STATUS_SUCCESS;
 334                         RESET_Response->AddressingReset = 0;
 335
 336                         break;
 337                 case REMOTE_NDIS_KEEPALIVE_MSG:
 338                         RNDISInterfaceInfo->State.ResponseReady = true;
 339
 340                         RNDIS_KeepAlive_Message_t*  KEEPALIVE_Message  =
 341                                         (RNDIS_KeepAlive_Message_t*)&RNDISInterfaceInfo->State.RNDISMessageBuffer;
 342                         RNDIS_KeepAlive_Complete_t* KEEPALIVE_Response =
 343                                         (RNDIS_KeepAlive_Complete_t*)&RNDISInterfaceInfo->State.RNDISMessageBuffer;
 344
 345                         KEEPALIVE_Response->MessageType   = REMOTE_NDIS_KEEPALIVE_CMPLT;
 346                         KEEPALIVE_Response->MessageLength = sizeof(RNDIS_KeepAlive_Complete_t);
 347                         KEEPALIVE_Response->RequestId     = KEEPALIVE_Message->RequestId;
 348                         KEEPALIVE_Response->Status        = REMOTE_NDIS_STATUS_SUCCESS;
 349
 350                         break;
 351         }
 352 }
 353
 354 static bool RNDIS_Device_ProcessNDISQuery(USB_ClassInfo_RNDIS_Device_t* const RNDISInterfaceInfo,
 355                                           const uint32_t OId,
 356                                           void* const QueryData,
 357                                           const uint16_t QuerySize,
 358                                           void* ResponseData,
 359                                           uint16_t* const ResponseSize)
 360 {
 361         (void)QueryData;
 362         (void)QuerySize;
 363
 364         switch (OId)
 365         {
 366                 case OID_GEN_SUPPORTED_LIST:
 367                         *ResponseSize = sizeof(AdapterSupportedOIDList);
 368
 369                         memcpy_P(ResponseData, AdapterSupportedOIDList, sizeof(AdapterSupportedOIDList));
 370
 371                         return true;
 372                 case OID_GEN_PHYSICAL_MEDIUM:
 373                         *ResponseSize = sizeof(uint32_t);
 374
 375                         /* Indicate that the device is a true ethernet link */
 376                         *((uint32_t*)ResponseData) = 0;
 377
 378                         return true;
 379                 case OID_GEN_HARDWARE_STATUS:
 380                         *ResponseSize = sizeof(uint32_t);
 381
 382                         *((uint32_t*)ResponseData) = NDIS_HardwareStatus_Ready;
 383
 384                         return true;
 385                 case OID_GEN_MEDIA_SUPPORTED:
 386                 case OID_GEN_MEDIA_IN_USE:
 387                         *ResponseSize = sizeof(uint32_t);
 388
 389                         *((uint32_t*)ResponseData) = REMOTE_NDIS_MEDIUM_802_3;
 390
 391                         return true;
 392                 case OID_GEN_VENDOR_ID:
 393                         *ResponseSize = sizeof(uint32_t);
 394
 395                         /* Vendor ID 0x0xFFFFFF is reserved for vendors who have not purchased a NDIS VID */
 396                         *((uint32_t*)ResponseData) = 0x00FFFFFF;
 397
 398                         return true;
 399                 case OID_GEN_MAXIMUM_FRAME_SIZE:
 400                 case OID_GEN_TRANSMIT_BLOCK_SIZE:
 401                 case OID_GEN_RECEIVE_BLOCK_SIZE:
 402                         *ResponseSize = sizeof(uint32_t);
 403
 404                         *((uint32_t*)ResponseData) = ETHERNET_FRAME_SIZE_MAX;
 405
 406                         return true;
 407                 case OID_GEN_VENDOR_DESCRIPTION:
 408                         *ResponseSize = (strlen(RNDISInterfaceInfo->Config.AdapterVendorDescription) + 1);
 409
 410                         memcpy(ResponseData, RNDISInterfaceInfo->Config.AdapterVendorDescription, *ResponseSize);
 411
 412                         return true;
 413                 case OID_GEN_MEDIA_CONNECT_STATUS:
 414                         *ResponseSize = sizeof(uint32_t);
 415
 416                         *((uint32_t*)ResponseData) = REMOTE_NDIS_MEDIA_STATE_CONNECTED;
 417
 418                         return true;
 419                 case OID_GEN_LINK_SPEED:
 420                         *ResponseSize = sizeof(uint32_t);
 421
 422                         /* Indicate 10Mb/s link speed */
 423                         *((uint32_t*)ResponseData) = 100000;
 424
 425                         return true;
 426                 case OID_802_3_PERMANENT_ADDRESS:
 427                 case OID_802_3_CURRENT_ADDRESS:
 428                         *ResponseSize = sizeof(MAC_Address_t);
 429
 430                         memcpy(ResponseData, &RNDISInterfaceInfo->Config.AdapterMACAddress, sizeof(MAC_Address_t));
 431
 432                         return true;
 433                 case OID_802_3_MAXIMUM_LIST_SIZE:
 434                         *ResponseSize = sizeof(uint32_t);
 435
 436                         /* Indicate only one multicast address supported */
 437                         *((uint32_t*)ResponseData) = 1;
 438
 439                         return true;
 440                 case OID_GEN_CURRENT_PACKET_FILTER:
 441                         *ResponseSize = sizeof(uint32_t);
 442
 443                         *((uint32_t*)ResponseData) = RNDISInterfaceInfo->State.CurrPacketFilter;
 444
 445                         return true;
 446                 case OID_GEN_XMIT_OK:
 447                 case OID_GEN_RCV_OK:
 448                 case OID_GEN_XMIT_ERROR:
 449                 case OID_GEN_RCV_ERROR:
 450                 case OID_GEN_RCV_NO_BUFFER:
 451                 case OID_802_3_RCV_ERROR_ALIGNMENT:
 452                 case OID_802_3_XMIT_ONE_COLLISION:
 453                 case OID_802_3_XMIT_MORE_COLLISIONS:
 454                         *ResponseSize = sizeof(uint32_t);
 455
 456                         /* Unused statistic OIDs - always return 0 for each */
 457                         *((uint32_t*)ResponseData) = 0;
 458
 459                         return true;
 460                 case OID_GEN_MAXIMUM_TOTAL_SIZE:
 461                         *ResponseSize = sizeof(uint32_t);
 462
 463                         /* Indicate maximum overall buffer (Ethernet frame and RNDIS header) the adapter can handle */
 464                         *((uint32_t*)ResponseData) = (RNDIS_MESSAGE_BUFFER_SIZE + ETHERNET_FRAME_SIZE_MAX);
 465
 466                         return true;
 467                 default:
 468                         return false;
 469         }
 470 }
 471
 472 static bool RNDIS_Device_ProcessNDISSet(USB_ClassInfo_RNDIS_Device_t* const RNDISInterfaceInfo,
 473                                         const uint32_t OId,
 474                                         const void* SetData,
 475                                         const uint16_t SetSize)
 476 {
 477         (void)SetSize;
 478
 479         switch (OId)
 480         {
 481                 case OID_GEN_CURRENT_PACKET_FILTER:
 482                         RNDISInterfaceInfo->State.CurrPacketFilter = *((uint32_t*)SetData);
 483                         RNDISInterfaceInfo->State.CurrRNDISState = ((RNDISInterfaceInfo->State.CurrPacketFilter) ?
 484                                                               RNDIS_Data_Initialized : RNDIS_Data_Initialized);
 485
 486                         return true;
 487                 case OID_802_3_MULTICAST_LIST:
 488                         /* Do nothing - throw away the value from the host as it is unused */
 489
 490                         return true;
 491                 default:
 492                         return false;
 493         }
 494 }
 495
 496 #endif
 497