LUFA/Drivers/USB/Class/Device/RNDISClassDevice.h

   1 /*
   2              LUFA Library
   3      Copyright (C) Dean Camera, 2015.
   4
   5   dean [at] fourwalledcubicle [dot] com
   6            www.lufa-lib.org
   7 */
   8
   9 /*
  10   Copyright 2015  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 disclaims 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 /** \file
  32  *  \brief Device mode driver for the library USB RNDIS Class driver.
  33  *
  34  *  Device mode driver for the library USB RNDIS Class driver.
  35  *
  36  *  \note This file should not be included directly. It is automatically included as needed by the USB module driver
  37  *        dispatch header located in LUFA/Drivers/USB.h.
  38  */
  39
  40 /** \ingroup Group_USBClassRNDIS
  41  *  \defgroup Group_USBClassRNDISDevice RNDIS Class Device Mode Driver
  42  *
  43  *  \section Sec_USBClassRNDISDevice_Dependencies Module Source Dependencies
  44  *  The following files must be built with any user project that uses this module:
  45  *    - LUFA/Drivers/USB/Class/Device/RNDISClassDevice.c <i>(Makefile source module name: LUFA_SRC_USBCLASS)</i>
  46  *
  47  *  \section Sec_USBClassRNDISDevice_ModDescription Module Description
  48  *  Device Mode USB Class driver framework interface, for the RNDIS USB Class driver.
  49  *
  50  *  @{
  51  */
  52
  53 #ifndef _RNDIS_CLASS_DEVICE_H_
  54 #define _RNDIS_CLASS_DEVICE_H_
  55
  56         /* Includes: */
  57                 #include "../../USB.h"
  58                 #include "../Common/RNDISClassCommon.h"
  59
  60         /* Enable C linkage for C++ Compilers: */
  61                 #if defined(__cplusplus)
  62                         extern "C" {
  63                 #endif
  64
  65         /* Preprocessor Checks: */
  66                 #if !defined(__INCLUDE_FROM_RNDIS_DRIVER)
  67                         #error Do not include this file directly. Include LUFA/Drivers/USB.h instead.
  68                 #endif
  69
  70         /* Public Interface - May be used in end-application: */
  71                 /* Type Defines: */
  72                         /** \brief RNDIS Class Device Mode Configuration and State Structure.
  73                          *
  74                          *  Class state structure. An instance of this structure should be made for each RNDIS interface
  75                          *  within the user application, and passed to each of the RNDIS class driver functions as the
  76                          *  \c RNDISInterfaceInfo parameter. This stores each RNDIS interface's configuration and state information.
  77                          */
  78                         typedef struct
  79                         {
  80                                 struct
  81                                 {
  82                                         uint8_t  ControlInterfaceNumber; /**< Interface number of the RNDIS control interface within the device. */
  83
  84                                         USB_Endpoint_Table_t DataINEndpoint; /**< Data IN endpoint configuration table. */
  85                                         USB_Endpoint_Table_t DataOUTEndpoint; /**< Data OUT endpoint configuration table. */
  86                                         USB_Endpoint_Table_t NotificationEndpoint; /**< Notification IN Endpoint configuration table. */
  87
  88                                         char*         AdapterVendorDescription; /**< String description of the adapter vendor. */
  89                                         MAC_Address_t AdapterMACAddress; /**< MAC address of the adapter. */
  90
  91                                         uint8_t*      MessageBuffer; /**< Buffer where RNDIS messages can be stored by the internal driver. This
  92                                                                       *   should be at least 132 bytes in length for minimal functionality. */
  93                                         uint16_t      MessageBufferLength; /**< Length in bytes of the \ref MessageBuffer RNDIS buffer. */
  94                                 } Config; /**< Config data for the USB class interface within the device. All elements in this section
  95                                            *   <b>must</b> be set or the interface will fail to enumerate and operate correctly.
  96                                            */
  97                                 struct
  98                                 {
  99                                         bool     ResponseReady; /**< Internal flag indicating if a RNDIS message is waiting to be returned to the host. */
 100                                         uint8_t  CurrRNDISState; /**< Current RNDIS state of the adapter, a value from the \ref RNDIS_States_t enum. */
 101                                         uint32_t CurrPacketFilter; /**< Current packet filter mode, used internally by the class driver. */
 102                                 } State; /**< State data for the USB class interface within the device. All elements in this section
 103                                           *   are reset to their defaults when the interface is enumerated.
 104                                           */
 105                         } USB_ClassInfo_RNDIS_Device_t;
 106
 107                 /* Function Prototypes: */
 108                         /** Configures the endpoints of a given RNDIS interface, ready for use. This should be linked to the library
 109                          *  \ref EVENT_USB_Device_ConfigurationChanged() event so that the endpoints are configured when the configuration
 110                          *  containing the given RNDIS interface is selected.
 111                          *
 112                          *  \param[in,out] RNDISInterfaceInfo  Pointer to a structure containing a RNDIS Class configuration and state.
 113                          *
 114                          *  \return Boolean \c true if the endpoints were successfully configured, \c false otherwise.
 115                          */
 116                         bool RNDIS_Device_ConfigureEndpoints(USB_ClassInfo_RNDIS_Device_t* const RNDISInterfaceInfo) ATTR_NON_NULL_PTR_ARG(1);
 117
 118                         /** Processes incoming control requests from the host, that are directed to the given RNDIS class interface. This should be
 119                          *  linked to the library \ref EVENT_USB_Device_ControlRequest() event.
 120                          *
 121                          *  \param[in,out] RNDISInterfaceInfo  Pointer to a structure containing a RNDIS Class configuration and state.
 122                          */
 123                         void RNDIS_Device_ProcessControlRequest(USB_ClassInfo_RNDIS_Device_t* const RNDISInterfaceInfo) ATTR_NON_NULL_PTR_ARG(1);
 124
 125                         /** General management task for a given RNDIS class interface, required for the correct operation of the interface. This should
 126                          *  be called frequently in the main program loop, before the master USB management task \ref USB_USBTask().
 127                          *
 128                          *  \param[in,out] RNDISInterfaceInfo  Pointer to a structure containing a RNDIS Class configuration and state.
 129                          */
 130                         void RNDIS_Device_USBTask(USB_ClassInfo_RNDIS_Device_t* const RNDISInterfaceInfo) ATTR_NON_NULL_PTR_ARG(1);
 131
 132                         /** Determines if a packet is currently waiting for the device to read in and process.
 133                          *
 134                          *  \pre This function must only be called when the Device state machine is in the \ref DEVICE_STATE_Configured state or the
 135                          *       call will fail.
 136                          *
 137                          *  \param[in,out] RNDISInterfaceInfo  Pointer to a structure containing an RNDIS Class configuration and state.
 138                          *
 139                          *  \return Boolean \c true if a packet is waiting to be read in by the host, \c false otherwise.
 140                          */
 141                         bool RNDIS_Device_IsPacketReceived(USB_ClassInfo_RNDIS_Device_t* const RNDISInterfaceInfo) ATTR_NON_NULL_PTR_ARG(1);
 142
 143                         /** Retrieves the next pending packet from the device, discarding the remainder of the RNDIS packet header to leave
 144                          *  only the packet contents for processing by the device in the nominated buffer.
 145                          *
 146                          *  \pre This function must only be called when the Device state machine is in the \ref DEVICE_STATE_Configured state or the
 147                          *       call will fail.
 148                          *
 149                          *  \param[in,out] RNDISInterfaceInfo  Pointer to a structure containing an RNDIS Class configuration and state.
 150                          *  \param[out]    Buffer              Pointer to a buffer where the packer data is to be written to.
 151                          *  \param[out]    PacketLength        Pointer to where the length in bytes of the read packet is to be stored.
 152                          *
 153                          *  \return A value from the \ref Endpoint_Stream_RW_ErrorCodes_t enum.
 154                          */
 155                         uint8_t RNDIS_Device_ReadPacket(USB_ClassInfo_RNDIS_Device_t* const RNDISInterfaceInfo,
 156                                                                                         void* Buffer,
 157                                                                                         uint16_t* const PacketLength) ATTR_NON_NULL_PTR_ARG(1);
 158
 159                         /** Sends the given packet to the attached RNDIS device, after adding a RNDIS packet message header.
 160                          *
 161                          *  \pre This function must only be called when the Device state machine is in the \ref DEVICE_STATE_Configured state or the
 162                          *       call will fail.
 163                          *
 164                          *  \param[in,out] RNDISInterfaceInfo  Pointer to a structure containing an RNDIS Class configuration and state.
 165                          *  \param[in]     Buffer              Pointer to a buffer where the packer data is to be read from.
 166                          *  \param[in]     PacketLength        Length in bytes of the packet to send.
 167                          *
 168                          *  \return A value from the \ref Endpoint_Stream_RW_ErrorCodes_t enum.
 169                          */
 170                         uint8_t RNDIS_Device_SendPacket(USB_ClassInfo_RNDIS_Device_t* const RNDISInterfaceInfo,
 171                                                                                         void* Buffer,
 172                                                                                         const uint16_t PacketLength) ATTR_NON_NULL_PTR_ARG(1);
 173
 174         /* Private Interface - For use in library only: */
 175         #if !defined(__DOXYGEN__)
 176                 /* Macros: */
 177                         #define RNDIS_DEVICE_MIN_MESSAGE_BUFFER_LENGTH  sizeof(AdapterSupportedOIDList) + sizeof(RNDIS_Query_Complete_t)
 178
 179                 /* Function Prototypes: */
 180                 #if defined(__INCLUDE_FROM_RNDIS_DEVICE_C)
 181                         static void RNDIS_Device_ProcessRNDISControlMessage(USB_ClassInfo_RNDIS_Device_t* const RNDISInterfaceInfo)
 182                                                                             ATTR_NON_NULL_PTR_ARG(1);
 183                         static bool RNDIS_Device_ProcessNDISQuery(USB_ClassInfo_RNDIS_Device_t* const RNDISInterfaceInfo,
 184                                                                   const uint32_t OId,
 185                                                       void* const QueryData,
 186                                                       const uint16_t QuerySize,
 187                                                                                               void* ResponseData,
 188                                                       uint16_t* const ResponseSize) ATTR_NON_NULL_PTR_ARG(1)
 189                                                                   ATTR_NON_NULL_PTR_ARG(5) ATTR_NON_NULL_PTR_ARG(6);
 190                         static bool RNDIS_Device_ProcessNDISSet(USB_ClassInfo_RNDIS_Device_t* const RNDISInterfaceInfo,
 191                                                     const uint32_t OId,
 192                                                                 const void* SetData,
 193                                                     const uint16_t SetSize) ATTR_NON_NULL_PTR_ARG(1)
 194                                                                 ATTR_NON_NULL_PTR_ARG(3);
 195                 #endif
 196
 197         #endif
 198
 199         /* Disable C linkage for C++ Compilers: */
 200                 #if defined(__cplusplus)
 201                         }
 202                 #endif
 203
 204 #endif
 205
 206 /** @} */
 207