208 lines
10 KiB
C
208 lines
10 KiB
C
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/*
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LUFA Library
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Copyright (C) Dean Camera, 2019.
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dean [at] fourwalledcubicle [dot] com
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www.lufa-lib.org
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*/
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/*
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Copyright 2019 Dean Camera (dean [at] fourwalledcubicle [dot] com)
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Permission to use, copy, modify, distribute, and sell this
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software and its documentation for any purpose is hereby granted
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without fee, provided that the above copyright notice appear in
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all copies and that both that the copyright notice and this
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permission notice and warranty disclaimer appear in supporting
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documentation, and that the name of the author not be used in
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advertising or publicity pertaining to distribution of the
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software without specific, written prior permission.
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The author disclaims all warranties with regard to this
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software, including all implied warranties of merchantability
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and fitness. In no event shall the author be liable for any
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special, indirect or consequential damages or any damages
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whatsoever resulting from loss of use, data or profits, whether
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in an action of contract, negligence or other tortious action,
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arising out of or in connection with the use or performance of
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this software.
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*/
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/** \file
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* \brief Device mode driver for the library USB RNDIS Class driver.
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*
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* Device mode driver for the library USB RNDIS Class driver.
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*
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* \note This file should not be included directly. It is automatically included as needed by the USB module driver
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* dispatch header located in LUFA/Drivers/USB.h.
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*/
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/** \ingroup Group_USBClassRNDIS
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* \defgroup Group_USBClassRNDISDevice RNDIS Class Device Mode Driver
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*
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* \section Sec_USBClassRNDISDevice_Dependencies Module Source Dependencies
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* The following files must be built with any user project that uses this module:
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* - LUFA/Drivers/USB/Class/Device/RNDISClassDevice.c <i>(Makefile source module name: LUFA_SRC_USBCLASS)</i>
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*
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* \section Sec_USBClassRNDISDevice_ModDescription Module Description
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* Device Mode USB Class driver framework interface, for the RNDIS USB Class driver.
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*
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* @{
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*/
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#ifndef _RNDIS_CLASS_DEVICE_H_
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#define _RNDIS_CLASS_DEVICE_H_
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/* Includes: */
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#include "../../USB.h"
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#include "../Common/RNDISClassCommon.h"
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/* Enable C linkage for C++ Compilers: */
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#if defined(__cplusplus)
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extern "C" {
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#endif
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/* Preprocessor Checks: */
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#if !defined(__INCLUDE_FROM_RNDIS_DRIVER)
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#error Do not include this file directly. Include LUFA/Drivers/USB.h instead.
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#endif
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/* Public Interface - May be used in end-application: */
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/* Type Defines: */
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/** \brief RNDIS Class Device Mode Configuration and State Structure.
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*
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* Class state structure. An instance of this structure should be made for each RNDIS interface
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* within the user application, and passed to each of the RNDIS class driver functions as the
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* \c RNDISInterfaceInfo parameter. This stores each RNDIS interface's configuration and state information.
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*/
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typedef struct
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{
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struct
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{
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uint8_t ControlInterfaceNumber; /**< Interface number of the RNDIS control interface within the device. */
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USB_Endpoint_Table_t DataINEndpoint; /**< Data IN endpoint configuration table. */
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USB_Endpoint_Table_t DataOUTEndpoint; /**< Data OUT endpoint configuration table. */
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USB_Endpoint_Table_t NotificationEndpoint; /**< Notification IN Endpoint configuration table. */
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char* AdapterVendorDescription; /**< String description of the adapter vendor. */
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MAC_Address_t AdapterMACAddress; /**< MAC address of the adapter. */
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uint8_t* MessageBuffer; /**< Buffer where RNDIS messages can be stored by the internal driver. This
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* should be at least 132 bytes in length for minimal functionality. */
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uint16_t MessageBufferLength; /**< Length in bytes of the \ref MessageBuffer RNDIS buffer. */
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} Config; /**< Config data for the USB class interface within the device. All elements in this section
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* <b>must</b> be set or the interface will fail to enumerate and operate correctly.
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*/
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struct
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{
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bool ResponseReady; /**< Internal flag indicating if a RNDIS message is waiting to be returned to the host. */
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uint8_t CurrRNDISState; /**< Current RNDIS state of the adapter, a value from the \ref RNDIS_States_t enum. */
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uint32_t CurrPacketFilter; /**< Current packet filter mode, used internally by the class driver. */
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} State; /**< State data for the USB class interface within the device. All elements in this section
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* are reset to their defaults when the interface is enumerated.
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*/
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} USB_ClassInfo_RNDIS_Device_t;
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/* Function Prototypes: */
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/** Configures the endpoints of a given RNDIS interface, ready for use. This should be linked to the library
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* \ref EVENT_USB_Device_ConfigurationChanged() event so that the endpoints are configured when the configuration
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* containing the given RNDIS interface is selected.
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*
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* \param[in,out] RNDISInterfaceInfo Pointer to a structure containing a RNDIS Class configuration and state.
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*
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* \return Boolean \c true if the endpoints were successfully configured, \c false otherwise.
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*/
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bool RNDIS_Device_ConfigureEndpoints(USB_ClassInfo_RNDIS_Device_t* const RNDISInterfaceInfo) ATTR_NON_NULL_PTR_ARG(1);
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/** Processes incoming control requests from the host, that are directed to the given RNDIS class interface. This should be
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* linked to the library \ref EVENT_USB_Device_ControlRequest() event.
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*
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* \param[in,out] RNDISInterfaceInfo Pointer to a structure containing a RNDIS Class configuration and state.
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*/
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void RNDIS_Device_ProcessControlRequest(USB_ClassInfo_RNDIS_Device_t* const RNDISInterfaceInfo) ATTR_NON_NULL_PTR_ARG(1);
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/** General management task for a given RNDIS class interface, required for the correct operation of the interface. This should
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* be called frequently in the main program loop, before the master USB management task \ref USB_USBTask().
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*
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* \param[in,out] RNDISInterfaceInfo Pointer to a structure containing a RNDIS Class configuration and state.
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*/
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void RNDIS_Device_USBTask(USB_ClassInfo_RNDIS_Device_t* const RNDISInterfaceInfo) ATTR_NON_NULL_PTR_ARG(1);
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/** Determines if a packet is currently waiting for the device to read in and process.
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*
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* \pre This function must only be called when the Device state machine is in the \ref DEVICE_STATE_Configured state or the
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* call will fail.
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*
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* \param[in,out] RNDISInterfaceInfo Pointer to a structure containing an RNDIS Class configuration and state.
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*
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* \return Boolean \c true if a packet is waiting to be read in by the host, \c false otherwise.
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*/
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bool RNDIS_Device_IsPacketReceived(USB_ClassInfo_RNDIS_Device_t* const RNDISInterfaceInfo) ATTR_NON_NULL_PTR_ARG(1);
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/** Retrieves the next pending packet from the device, discarding the remainder of the RNDIS packet header to leave
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* only the packet contents for processing by the device in the nominated buffer.
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*
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* \pre This function must only be called when the Device state machine is in the \ref DEVICE_STATE_Configured state or the
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* call will fail.
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*
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* \param[in,out] RNDISInterfaceInfo Pointer to a structure containing an RNDIS Class configuration and state.
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* \param[out] Buffer Pointer to a buffer where the packer data is to be written to.
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* \param[out] PacketLength Pointer to where the length in bytes of the read packet is to be stored.
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*
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* \return A value from the \ref Endpoint_Stream_RW_ErrorCodes_t enum.
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*/
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uint8_t RNDIS_Device_ReadPacket(USB_ClassInfo_RNDIS_Device_t* const RNDISInterfaceInfo,
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void* Buffer,
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uint16_t* const PacketLength) ATTR_NON_NULL_PTR_ARG(1);
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/** Sends the given packet to the attached RNDIS device, after adding a RNDIS packet message header.
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*
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* \pre This function must only be called when the Device state machine is in the \ref DEVICE_STATE_Configured state or the
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* call will fail.
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*
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* \param[in,out] RNDISInterfaceInfo Pointer to a structure containing an RNDIS Class configuration and state.
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* \param[in] Buffer Pointer to a buffer where the packer data is to be read from.
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* \param[in] PacketLength Length in bytes of the packet to send.
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*
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* \return A value from the \ref Endpoint_Stream_RW_ErrorCodes_t enum.
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*/
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uint8_t RNDIS_Device_SendPacket(USB_ClassInfo_RNDIS_Device_t* const RNDISInterfaceInfo,
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void* Buffer,
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const uint16_t PacketLength) ATTR_NON_NULL_PTR_ARG(1);
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/* Private Interface - For use in library only: */
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#if !defined(__DOXYGEN__)
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/* Macros: */
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#define RNDIS_DEVICE_MIN_MESSAGE_BUFFER_LENGTH sizeof(AdapterSupportedOIDList) + sizeof(RNDIS_Query_Complete_t)
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/* Function Prototypes: */
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#if defined(__INCLUDE_FROM_RNDIS_DEVICE_C)
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static void RNDIS_Device_ProcessRNDISControlMessage(USB_ClassInfo_RNDIS_Device_t* const RNDISInterfaceInfo)
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ATTR_NON_NULL_PTR_ARG(1);
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static bool RNDIS_Device_ProcessNDISQuery(USB_ClassInfo_RNDIS_Device_t* const RNDISInterfaceInfo,
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const uint32_t OId,
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void* const QueryData,
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const uint16_t QuerySize,
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void* ResponseData,
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uint16_t* const ResponseSize) ATTR_NON_NULL_PTR_ARG(1)
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ATTR_NON_NULL_PTR_ARG(5) ATTR_NON_NULL_PTR_ARG(6);
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static bool RNDIS_Device_ProcessNDISSet(USB_ClassInfo_RNDIS_Device_t* const RNDISInterfaceInfo,
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const uint32_t OId,
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const void* SetData,
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const uint16_t SetSize) ATTR_NON_NULL_PTR_ARG(1)
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ATTR_NON_NULL_PTR_ARG(3);
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#endif
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#endif
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/* Disable C linkage for C++ Compilers: */
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#if defined(__cplusplus)
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}
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#endif
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#endif
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/** @} */
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