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Diffstat (limited to 'lib/lufa/Demos/Device/LowLevel/RNDISEthernet/Lib/TCP.h')
| -rw-r--r-- | lib/lufa/Demos/Device/LowLevel/RNDISEthernet/Lib/TCP.h | 260 |
1 files changed, 0 insertions, 260 deletions
diff --git a/lib/lufa/Demos/Device/LowLevel/RNDISEthernet/Lib/TCP.h b/lib/lufa/Demos/Device/LowLevel/RNDISEthernet/Lib/TCP.h deleted file mode 100644 index ce8a9a2d0f..0000000000 --- a/lib/lufa/Demos/Device/LowLevel/RNDISEthernet/Lib/TCP.h +++ /dev/null @@ -1,260 +0,0 @@ -/* - LUFA Library - Copyright (C) Dean Camera, 2017. - - dean [at] fourwalledcubicle [dot] com - www.lufa-lib.org -*/ - -/* - Copyright 2017 Dean Camera (dean [at] fourwalledcubicle [dot] com) - - Permission to use, copy, modify, distribute, and sell this - software and its documentation for any purpose is hereby granted - without fee, provided that the above copyright notice appear in - all copies and that both that the copyright notice and this - permission notice and warranty disclaimer appear in supporting - documentation, and that the name of the author not be used in - advertising or publicity pertaining to distribution of the - software without specific, written prior permission. - - The author disclaims all warranties with regard to this - software, including all implied warranties of merchantability - and fitness. In no event shall the author be liable for any - special, indirect or consequential damages or any damages - whatsoever resulting from loss of use, data or profits, whether - in an action of contract, negligence or other tortious action, - arising out of or in connection with the use or performance of - this software. -*/ - -/** \file - * - * Header file for TCP.c. - */ - -#ifndef _TCP_H_ -#define _TCP_H_ - - /* Includes: */ - #include <avr/io.h> - #include <stdbool.h> - - #include "EthernetProtocols.h" - #include "Ethernet.h" - #include "ProtocolDecoders.h" - - /* Macros: */ - /** Maximum number of TCP ports which can be open at the one time. */ - #define MAX_OPEN_TCP_PORTS 1 - - /** Maximum number of TCP connections which can be sustained at the one time. */ - #define MAX_TCP_CONNECTIONS 3 - - /** TCP window size, giving the maximum number of bytes which can be buffered at the one time. */ - #define TCP_WINDOW_SIZE 512 - - /** Port number for HTTP transmissions. */ - #define TCP_PORT_HTTP SwapEndian_16(80) - - /** Data direction indicator for a TCP application buffer, indicating data from host-to-device. */ - #define TCP_PACKETDIR_IN false - - /** Data direction indicator for a TCP application buffer, indicating data from device-to-host. */ - #define TCP_PACKETDIR_OUT true - - /** Congestion Window Reduced TCP flag mask. */ - #define TCP_FLAG_CWR (1 << 7) - - /** Explicit Congestion Notification TCP flag mask. */ - #define TCP_FLAG_ECE (1 << 6) - - /** Urgent TCP flag mask. */ - #define TCP_FLAG_URG (1 << 5) - - /** Data Acknowledge TCP flag mask. */ - #define TCP_FLAG_ACK (1 << 4) - - /** Data Push TCP flag mask. */ - #define TCP_FLAG_PSH (1 << 3) - - /** Reset TCP flag mask. */ - #define TCP_FLAG_RST (1 << 2) - - /** Synchronize TCP flag mask. */ - #define TCP_FLAG_SYN (1 << 1) - - /** Connection Finalize TCP flag mask. */ - #define TCP_FLAG_FIN (1 << 0) - - /** Application macro: Determines if the given application buffer contains a packet received from the host - * - * \param[in] Buffer Application buffer to check - * - * \return Boolean \c true if the buffer contains a packet from the host, \c false otherwise - */ - #define TCP_APP_HAS_RECEIVED_PACKET(Buffer) (Buffer->Ready && (Buffer->Direction == TCP_PACKETDIR_IN)) - - /** Application macro: Indicates if the application buffer is currently locked by the application for device-to-host transfers. - * - * \param[in] Buffer Application buffer to check - * - * \return Boolean \c true if the buffer has been captured by the application for device-to-host transmissions, \c false otherwise - */ - #define TCP_APP_HAVE_CAPTURED_BUFFER(Buffer) (!(Buffer->Ready) && Buffer->InUse && \ - (Buffer->Direction == TCP_PACKETDIR_OUT)) - - /** Application macro: Indicates if the application can lock the buffer for multiple continued device-to-host transmissions. - * - * \param[in] Buffer Application buffer to check - * - * \return Boolean \c true if the buffer may be captured by the application for device-to-host transmissions, \c false otherwise - */ - #define TCP_APP_CAN_CAPTURE_BUFFER(Buffer) Buffer->InUse - - /** Application macro: Captures the application buffer, locking it for device-to-host transmissions only. This should be - * performed when the application needs to transmit several packets worth of data in succession with no interruptions from the host. - * - * \pre The application must check that the buffer can be locked first using TCP_APP_CAN_CAPTURE_BUFFER(). - * - * \param[in] Buffer Application buffer to lock - */ - #define TCP_APP_CAPTURE_BUFFER(Buffer) do { Buffer->Direction = TCP_PACKETDIR_OUT; Buffer->InUse = true; } while (0) - - /** Application macro: Releases a captured application buffer, allowing for host-to-device packets to be received. - * - * \param[in] Buffer Application buffer to release - */ - #define TCP_APP_RELEASE_BUFFER(Buffer) do { Buffer->InUse = false; } while (0) - - /** Application macro: Sends the contents of the given application buffer to the host. - * - * \param[in] Buffer Application buffer to send - * \param[in] Len Length of data contained in the buffer - */ - #define TCP_APP_SEND_BUFFER(Buffer, Len) do { Buffer->Direction = TCP_PACKETDIR_OUT; Buffer->Length = Len; Buffer->Ready = true; } while (0) - - /** Application macro: Clears the application buffer, ready for a packet to be written to it. - * - * \param[in] Buffer Application buffer to clear - */ - #define TCP_APP_CLEAR_BUFFER(Buffer) do { Buffer->Ready = false; Buffer->Length = 0; } while (0) - - /** Application macro: Closes an open connection to a host. - * - * \param[in] Connection Open TCP connection to close - */ - #define TCP_APP_CLOSECONNECTION(Connection) do { Connection->State = TCP_Connection_Closing; } while (0) - - /* Enums: */ - /** Enum for possible TCP port states. */ - enum TCP_PortStates_t - { - TCP_Port_Closed = 0, /**< TCP port closed, no connections to a host may be made on this port. */ - TCP_Port_Open = 1, /**< TCP port open, connections to a host may be made on this port. */ - }; - - /** Enum for possible TCP connection states. */ - enum TCP_ConnectionStates_t - { - TCP_Connection_Listen = 0, /**< Listening for a connection from a host */ - TCP_Connection_SYNSent = 1, /**< Unused */ - TCP_Connection_SYNReceived = 2, /**< SYN received, waiting for ACK */ - TCP_Connection_Established = 3, /**< Connection established in both directions */ - TCP_Connection_FINWait1 = 4, /**< Closing, waiting for ACK */ - TCP_Connection_FINWait2 = 5, /**< Closing, waiting for FIN ACK */ - TCP_Connection_CloseWait = 6, /**< Closing, waiting for ACK */ - TCP_Connection_Closing = 7, /**< Unused */ - TCP_Connection_LastACK = 8, /**< Unused */ - TCP_Connection_TimeWait = 9, /**< Unused */ - TCP_Connection_Closed = 10, /**< Connection closed in both directions */ - }; - - /* Type Defines: */ - /** Type define for a TCP connection buffer structure, including size, data and direction. */ - typedef struct - { - uint16_t Length; /**< Length of data in the TCP application buffer */ - uint8_t Data[TCP_WINDOW_SIZE]; /**< TCP application data buffer */ - bool Direction; /**< Buffer transmission direction, either TCP_PACKETDIR_IN or TCP_PACKETDIR_OUT */ - bool Ready; /**< If data from host, indicates buffer ready to be read, otherwise indicates - * buffer ready to be sent to the host - */ - bool InUse; /**< Indicates if the buffer is locked to to the current direction, and cannot be changed */ - } TCP_ConnectionBuffer_t; - - /** Type define for a TCP connection information structure. */ - typedef struct - { - uint32_t SequenceNumberIn; /**< Current TCP sequence number for host-to-device */ - uint32_t SequenceNumberOut; /**< Current TCP sequence number for device-to-host */ - TCP_ConnectionBuffer_t Buffer; /**< Connection application data buffer */ - } TCP_ConnectionInfo_t; - - /** Type define for a complete TCP connection state. */ - typedef struct - { - uint16_t Port; /**< Connection port number on the device */ - uint16_t RemotePort; /**< Connection port number on the host */ - IP_Address_t RemoteAddress; /**< Connection protocol IP address of the host */ - TCP_ConnectionInfo_t Info; /**< Connection information, including application buffer */ - uint8_t State; /**< Current connection state, a value from the \ref TCP_ConnectionStates_t enum */ - } TCP_ConnectionState_t; - - /** Type define for a TCP port state. */ - typedef struct - { - uint16_t Port; /**< TCP port number on the device */ - uint8_t State; /**< Current port state, a value from the \ref TCP_PortStates_t enum */ - void (*ApplicationHandler) (TCP_ConnectionState_t* ConnectionState, - TCP_ConnectionBuffer_t* Buffer); /**< Port application handler */ - } TCP_PortState_t; - - /** Type define for a TCP packet header. */ - typedef struct - { - uint16_t SourcePort; /**< Source port of the TCP packet */ - uint16_t DestinationPort; /**< Destination port of the TCP packet */ - - uint32_t SequenceNumber; /**< Data sequence number of the packet */ - uint32_t AcknowledgmentNumber; /**< Data acknowledgment number of the packet */ - - unsigned Reserved : 4; /**< Reserved, must be all 0 */ - unsigned DataOffset : 4; /**< Offset of the data from the start of the header, in 4 byte chunks */ - uint8_t Flags; /**< TCP packet flags */ - uint16_t WindowSize; /**< Current data window size (bytes remaining in reception buffer) */ - - uint16_t Checksum; /**< TCP checksum */ - uint16_t UrgentPointer; /**< Urgent data pointer */ - } TCP_Header_t; - - /* Function Prototypes: */ - void TCP_Init(void); - void TCP_Task(void); - bool TCP_SetPortState(const uint16_t Port, - const uint8_t State, - void (*Handler)(TCP_ConnectionState_t*, TCP_ConnectionBuffer_t*)); - uint8_t TCP_GetPortState(const uint16_t Port); - bool TCP_SetConnectionState(const uint16_t Port, - const IP_Address_t* RemoteAddress, - const uint16_t RemotePort, - const uint8_t State); - uint8_t TCP_GetConnectionState(const uint16_t Port, - const IP_Address_t* RemoteAddress, - const uint16_t RemotePort); - TCP_ConnectionInfo_t* TCP_GetConnectionInfo(const uint16_t Port, - const IP_Address_t* RemoteAddress, - const uint16_t RemotePort); - int16_t TCP_ProcessTCPPacket(void* IPHeaderInStart, - void* TCPHeaderInStart, - void* TCPHeaderOutStart); - - #if defined(INCLUDE_FROM_TCP_C) - static uint16_t TCP_Checksum16(void* TCPHeaderOutStart, - const IP_Address_t* SourceAddress, - const IP_Address_t* DestinationAddress, - uint16_t TCPOutSize); - #endif - -#endif - |