From 9d733d44b402ce33c3c41e45b497c2f92be393f5 Mon Sep 17 00:00:00 2001 From: Dean Camera Date: Wed, 18 May 2011 14:33:34 +0000 Subject: Add new RNDIS_Host_IsPacketReceived(), RNDIS_Device_ReadPacket() and RNDIS_Device_WritePacket() functions to the Device RNDIS Class Driver. Modify RNDIS demos to suit the simplified Ethernet_Frame_Info_t structure. --- LUFA/Drivers/USB/Class/Device/RNDIS.c | 126 +++++++++++++++++++++------------- LUFA/Drivers/USB/Class/Device/RNDIS.h | 48 +++++++++++-- 2 files changed, 122 insertions(+), 52 deletions(-) (limited to 'LUFA/Drivers/USB/Class/Device') diff --git a/LUFA/Drivers/USB/Class/Device/RNDIS.c b/LUFA/Drivers/USB/Class/Device/RNDIS.c index 616af5f7d..a9bbcfaba 100644 --- a/LUFA/Drivers/USB/Class/Device/RNDIS.c +++ b/LUFA/Drivers/USB/Class/Device/RNDIS.c @@ -163,8 +163,6 @@ void RNDIS_Device_USBTask(USB_ClassInfo_RNDIS_Device_t* const RNDISInterfaceInfo if (USB_DeviceState != DEVICE_STATE_Configured) return; - RNDIS_Message_Header_t* MessageHeader = (RNDIS_Message_Header_t*)&RNDISInterfaceInfo->State.RNDISMessageBuffer; - Endpoint_SelectEndpoint(RNDISInterfaceInfo->Config.NotificationEndpointNumber); if (Endpoint_IsINReady() && RNDISInterfaceInfo->State.ResponseReady) @@ -184,50 +182,6 @@ void RNDIS_Device_USBTask(USB_ClassInfo_RNDIS_Device_t* const RNDISInterfaceInfo RNDISInterfaceInfo->State.ResponseReady = false; } - - if ((RNDISInterfaceInfo->State.CurrRNDISState == RNDIS_Data_Initialized) && !(MessageHeader->MessageLength)) - { - RNDIS_Packet_Message_t RNDISPacketHeader; - - Endpoint_SelectEndpoint(RNDISInterfaceInfo->Config.DataOUTEndpointNumber); - - if (Endpoint_IsOUTReceived() && !(RNDISInterfaceInfo->State.FrameIN.FrameInBuffer)) - { - Endpoint_Read_Stream_LE(&RNDISPacketHeader, sizeof(RNDIS_Packet_Message_t), NULL); - - if (RNDISPacketHeader.DataLength > ETHERNET_FRAME_SIZE_MAX) - { - Endpoint_StallTransaction(); - return; - } - - Endpoint_Read_Stream_LE(RNDISInterfaceInfo->State.FrameIN.FrameData, RNDISPacketHeader.DataLength, NULL); - - Endpoint_ClearOUT(); - - RNDISInterfaceInfo->State.FrameIN.FrameLength = RNDISPacketHeader.DataLength; - - RNDISInterfaceInfo->State.FrameIN.FrameInBuffer = true; - } - - Endpoint_SelectEndpoint(RNDISInterfaceInfo->Config.DataINEndpointNumber); - - if (Endpoint_IsINReady() && RNDISInterfaceInfo->State.FrameOUT.FrameInBuffer) - { - memset(&RNDISPacketHeader, 0, sizeof(RNDIS_Packet_Message_t)); - - RNDISPacketHeader.MessageType = REMOTE_NDIS_PACKET_MSG; - RNDISPacketHeader.MessageLength = (sizeof(RNDIS_Packet_Message_t) + RNDISInterfaceInfo->State.FrameOUT.FrameLength); - RNDISPacketHeader.DataOffset = (sizeof(RNDIS_Packet_Message_t) - sizeof(RNDIS_Message_Header_t)); - RNDISPacketHeader.DataLength = RNDISInterfaceInfo->State.FrameOUT.FrameLength; - - Endpoint_Write_Stream_LE(&RNDISPacketHeader, sizeof(RNDIS_Packet_Message_t), NULL); - Endpoint_Write_Stream_LE(RNDISInterfaceInfo->State.FrameOUT.FrameData, RNDISPacketHeader.DataLength, NULL); - Endpoint_ClearIN(); - - RNDISInterfaceInfo->State.FrameOUT.FrameInBuffer = false; - } - } } void RNDIS_Device_ProcessRNDISControlMessage(USB_ClassInfo_RNDIS_Device_t* const RNDISInterfaceInfo) @@ -493,5 +447,85 @@ static bool RNDIS_Device_ProcessNDISSet(USB_ClassInfo_RNDIS_Device_t* const RNDI } } +bool RNDIS_Device_IsPacketReceived(USB_ClassInfo_RNDIS_Device_t* const RNDISInterfaceInfo) +{ + if ((USB_DeviceState != DEVICE_STATE_Configured) || + (RNDISInterfaceInfo->State.CurrRNDISState != RNDIS_Data_Initialized)) + { + return false; + } + + Endpoint_SelectEndpoint(RNDISInterfaceInfo->Config.DataOUTEndpointNumber); + return Endpoint_IsOUTReceived(); +} + +uint8_t RNDIS_Device_ReadPacket(USB_ClassInfo_RNDIS_Device_t* const RNDISInterfaceInfo, + void* Buffer, + uint16_t* const PacketLength) +{ + if ((USB_DeviceState != DEVICE_STATE_Configured) || + (RNDISInterfaceInfo->State.CurrRNDISState != RNDIS_Data_Initialized)) + { + return ENDPOINT_RWSTREAM_DeviceDisconnected; + } + + Endpoint_SelectEndpoint(RNDISInterfaceInfo->Config.DataOUTEndpointNumber); + + *PacketLength = 0; + + if (!(Endpoint_IsOUTReceived())) + return ENDPOINT_RWSTREAM_NoError; + + RNDIS_Packet_Message_t RNDISPacketHeader; + Endpoint_Read_Stream_LE(&RNDISPacketHeader, sizeof(RNDIS_Packet_Message_t), NULL); + + if (RNDISPacketHeader.DataLength > ETHERNET_FRAME_SIZE_MAX) + { + Endpoint_StallTransaction(); + + return RNDIS_ERROR_LOGICAL_CMD_FAILED; + } + + *PacketLength = (uint16_t)RNDISPacketHeader.DataLength; + + Endpoint_Read_Stream_LE(Buffer, RNDISPacketHeader.DataLength, NULL); + Endpoint_ClearOUT(); + + return ENDPOINT_RWSTREAM_NoError; +} + +uint8_t RNDIS_Device_SendPacket(USB_ClassInfo_RNDIS_Device_t* const RNDISInterfaceInfo, + void* Buffer, + const uint16_t PacketLength) +{ + uint8_t ErrorCode; + + if ((USB_DeviceState != DEVICE_STATE_Configured) || + (RNDISInterfaceInfo->State.CurrRNDISState != RNDIS_Data_Initialized)) + { + return ENDPOINT_RWSTREAM_DeviceDisconnected; + } + + Endpoint_SelectEndpoint(RNDISInterfaceInfo->Config.DataINEndpointNumber); + + if ((ErrorCode = Endpoint_WaitUntilReady()) != ENDPOINT_READYWAIT_NoError) + return ErrorCode; + + RNDIS_Packet_Message_t RNDISPacketHeader; + + memset(&RNDISPacketHeader, 0, sizeof(RNDIS_Packet_Message_t)); + + RNDISPacketHeader.MessageType = REMOTE_NDIS_PACKET_MSG; + RNDISPacketHeader.MessageLength = (sizeof(RNDIS_Packet_Message_t) + PacketLength); + RNDISPacketHeader.DataOffset = (sizeof(RNDIS_Packet_Message_t) - sizeof(RNDIS_Message_Header_t)); + RNDISPacketHeader.DataLength = PacketLength; + + Endpoint_Write_Stream_LE(&RNDISPacketHeader, sizeof(RNDIS_Packet_Message_t), NULL); + Endpoint_Write_Stream_LE(Buffer, PacketLength, NULL); + Endpoint_ClearIN(); + + return ENDPOINT_RWSTREAM_NoError; +} + #endif diff --git a/LUFA/Drivers/USB/Class/Device/RNDIS.h b/LUFA/Drivers/USB/Class/Device/RNDIS.h index f53a8e01f..734ceb3fd 100644 --- a/LUFA/Drivers/USB/Class/Device/RNDIS.h +++ b/LUFA/Drivers/USB/Class/Device/RNDIS.h @@ -106,12 +106,6 @@ bool ResponseReady; /**< Internal flag indicating if a RNDIS message is waiting to be returned to the host. */ uint8_t CurrRNDISState; /**< Current RNDIS state of the adapter, a value from the \ref RNDIS_States_t enum. */ uint32_t CurrPacketFilter; /**< Current packet filter mode, used internally by the class driver. */ - Ethernet_Frame_Info_t FrameIN; /**< Structure holding the last received Ethernet frame from the host, for user - * processing. - */ - Ethernet_Frame_Info_t FrameOUT; /**< Structure holding the next Ethernet frame to send to the host, populated by the - * user application. - */ } State; /**< State data for the USB class interface within the device. All elements in this section * are reset to their defaults when the interface is enumerated. */ @@ -146,6 +140,48 @@ */ void RNDIS_Device_USBTask(USB_ClassInfo_RNDIS_Device_t* const RNDISInterfaceInfo) ATTR_NON_NULL_PTR_ARG(1); + /** Determines if a packet is currently waiting for the device to read in and process. + * + * \pre This function must only be called when the Device state machine is in the \ref DEVICE_STATE_Configured state or the + * call will fail. + * + * \param[in,out] RNDISInterfaceInfo Pointer to a structure containing an RNDIS Class configuration and state. + * + * \return Boolean \c true if a packet is waiting to be read in by the host, \c false otherwise. + */ + bool RNDIS_Device_IsPacketReceived(USB_ClassInfo_RNDIS_Device_t* const RNDISInterfaceInfo); + + /** Retrieves the next pending packet from the device, discarding the remainder of the RNDIS packet header to leave + * only the packet contents for processing by the device in the nominated buffer. + * + * \pre This function must only be called when the Device state machine is in the \ref DEVICE_STATE_Configured state or the + * call will fail. + * + * \param[in,out] RNDISInterfaceInfo Pointer to a structure containing an RNDIS Class configuration and state. + * \param[out] Buffer Pointer to a buffer where the packer data is to be written to. + * \param[out] PacketLength Pointer to where the length in bytes of the read packet is to be stored. + * + * \return A value from the \ref Endpoint_Stream_RW_ErrorCodes_t enum. + */ + uint8_t RNDIS_Device_ReadPacket(USB_ClassInfo_RNDIS_Device_t* const RNDISInterfaceInfo, + void* Buffer, + uint16_t* const PacketLength); + + /** Sends the given packet to the attached RNDIS device, after adding a RNDIS packet message header. + * + * \pre This function must only be called when the Device state machine is in the \ref DEVICE_STATE_Configured state or the + * call will fail. + * + * \param[in,out] RNDISInterfaceInfo Pointer to a structure containing an RNDIS Class configuration and state. + * \param[in] Buffer Pointer to a buffer where the packer data is to be read from. + * \param[in] PacketLength Length in bytes of the packet to send. + * + * \return A value from the \ref Endpoint_Stream_RW_ErrorCodes_t enum. + */ + uint8_t RNDIS_Device_SendPacket(USB_ClassInfo_RNDIS_Device_t* const RNDISInterfaceInfo, + void* Buffer, + const uint16_t PacketLength); + /* Private Interface - For use in library only: */ #if !defined(__DOXYGEN__) /* Function Prototypes: */ -- cgit v1.2.3