/*\r
LUFA Library\r
- Copyright (C) Dean Camera, 2009.\r
+ Copyright (C) Dean Camera, 2010.\r
\r
dean [at] fourwalledcubicle [dot] com\r
www.fourwalledcubicle.com\r
*/\r
\r
/*\r
- Copyright 2009 Dean Camera (dean [at] fourwalledcubicle [dot] com)\r
-\r
- Permission to use, copy, modify, and distribute this software\r
- and its documentation for any purpose and without fee is hereby\r
- granted, provided that the above copyright notice appear in all\r
- copies and that both that the copyright notice and this\r
- permission notice and warranty disclaimer appear in supporting\r
- documentation, and that the name of the author not be used in\r
- advertising or publicity pertaining to distribution of the\r
+ Copyright 2010 Dean Camera (dean [at] fourwalledcubicle [dot] com)\r
+\r
+ Permission to use, copy, modify, distribute, and sell this \r
+ software and its documentation for any purpose is hereby granted\r
+ without fee, provided that the above copyright notice appear in \r
+ all copies and that both that the copyright notice and this\r
+ permission notice and warranty disclaimer appear in supporting \r
+ documentation, and that the name of the author not be used in \r
+ advertising or publicity pertaining to distribution of the \r
software without specific, written prior permission.\r
\r
The author disclaim all warranties with regard to this\r
#define INCLUDE_FROM_TCP_C\r
#include "TCP.h"\r
\r
-/* Global Variables: */\r
/** Port state table array. This contains the current status of TCP ports in the device. To save on space, only open ports are\r
* stored - closed ports may be overwritten at any time, and the system will assume any ports not present in the array are closed. This\r
* allows for MAX_OPEN_TCP_PORTS to be less than the number of ports used by the application if desired.\r
*/\r
void TCP_TCPTask(USB_ClassInfo_RNDIS_Device_t* RNDISInterfaceInfo)\r
{\r
- /* Task to hand off TCP packets to and from the listening applications. */\r
-\r
/* Run each application in sequence, to process incoming and generate outgoing packets */\r
for (uint8_t CSTableEntry = 0; CSTableEntry < MAX_TCP_CONNECTIONS; CSTableEntry++)\r
{\r
/* Find the corresponding port entry in the port table */\r
- for (uint8_t PTableEntry = 0; PTableEntry < MAX_TCP_CONNECTIONS; PTableEntry++)\r
+ for (uint8_t PTableEntry = 0; PTableEntry < MAX_OPEN_TCP_PORTS; PTableEntry++)\r
{\r
/* Run the application handler for the port */\r
if ((PortStateTable[PTableEntry].Port == ConnectionStateTable[CSTableEntry].Port) && \r
(PortStateTable[PTableEntry].State == TCP_Port_Open))\r
{\r
- PortStateTable[PTableEntry].ApplicationHandler(&ConnectionStateTable[CSTableEntry], &ConnectionStateTable[CSTableEntry].Info.Buffer);\r
+ PortStateTable[PTableEntry].ApplicationHandler(&ConnectionStateTable[CSTableEntry],\r
+ &ConnectionStateTable[CSTableEntry].Info.Buffer);\r
}\r
}\r
}\r
\r
+ /* Get pointer to the output frame info struct for convenience */\r
+ Ethernet_Frame_Info_t* FrameOUT = &RNDISInterfaceInfo->State.FrameOUT;\r
+ \r
/* Bail out early if there is already a frame waiting to be sent in the Ethernet OUT buffer */\r
- if (RNDISInterfaceInfo->State.FrameOUT.FrameInBuffer)\r
+ if (FrameOUT->FrameInBuffer)\r
return;\r
\r
/* Send response packets from each application as the TCP packet buffers are filled by the applications */\r
if ((ConnectionStateTable[CSTableEntry].Info.Buffer.Direction == TCP_PACKETDIR_OUT) &&\r
(ConnectionStateTable[CSTableEntry].Info.Buffer.Ready))\r
{\r
- Ethernet_Frame_Header_t* FrameOUTHeader = (Ethernet_Frame_Header_t*)&RNDISInterfaceInfo->State.FrameOUT.FrameData;\r
- IP_Header_t* IPHeaderOUT = (IP_Header_t*)&RNDISInterfaceInfo->State.FrameOUT.FrameData[sizeof(Ethernet_Frame_Header_t)];\r
- TCP_Header_t* TCPHeaderOUT = (TCP_Header_t*)&RNDISInterfaceInfo->State.FrameOUT.FrameData[sizeof(Ethernet_Frame_Header_t) +\r
- sizeof(IP_Header_t)]; \r
- void* TCPDataOUT = &RNDISInterfaceInfo->State.FrameOUT.FrameData[sizeof(Ethernet_Frame_Header_t) +\r
- sizeof(IP_Header_t) +\r
- sizeof(TCP_Header_t)];\r
+ Ethernet_Frame_Header_t* FrameOUTHeader = (Ethernet_Frame_Header_t*)&FrameOUT->FrameData;\r
+ IP_Header_t* IPHeaderOUT = (IP_Header_t*)&FrameOUT->FrameData[sizeof(Ethernet_Frame_Header_t)];\r
+ TCP_Header_t* TCPHeaderOUT = (TCP_Header_t*)&FrameOUT->FrameData[sizeof(Ethernet_Frame_Header_t) +\r
+ sizeof(IP_Header_t)];\r
+ void* TCPDataOUT = &FrameOUT->FrameData[sizeof(Ethernet_Frame_Header_t) +\r
+ sizeof(IP_Header_t) +\r
+ sizeof(TCP_Header_t)];\r
\r
uint16_t PacketSize = ConnectionStateTable[CSTableEntry].Info.Buffer.Length;\r
\r
PacketSize += sizeof(Ethernet_Frame_Header_t);\r
\r
/* Set the response length in the buffer and indicate that a response is ready to be sent */\r
- RNDISInterfaceInfo->State.FrameOUT.FrameLength = PacketSize;\r
- RNDISInterfaceInfo->State.FrameOUT.FrameInBuffer = true;\r
+ FrameOUT->FrameLength = PacketSize;\r
+ FrameOUT->FrameInBuffer = true;\r
\r
ConnectionStateTable[CSTableEntry].Info.Buffer.Ready = false;\r
\r
/* Detect RST from host to abort existing connection */\r
if (TCPHeaderIN->Flags & TCP_FLAG_RST)\r
{\r
- TCPHeaderOUT->Flags = (TCP_FLAG_RST | TCP_FLAG_ACK); \r
- PacketResponse = true;\r
- \r
- TCP_SetConnectionState(TCPHeaderIN->DestinationPort, IPHeaderIN->SourceAddress,\r
- TCPHeaderIN->SourcePort, TCP_Connection_Closed); \r
+ if (TCP_SetConnectionState(TCPHeaderIN->DestinationPort, IPHeaderIN->SourceAddress,\r
+ TCPHeaderIN->SourcePort, TCP_Connection_Closed))\r
+ {\r
+ TCPHeaderOUT->Flags = (TCP_FLAG_RST | TCP_FLAG_ACK); \r
+ PacketResponse = true; \r
+ }\r
}\r
else\r
{\r
case TCP_Connection_Listen:\r
if (TCPHeaderIN->Flags == TCP_FLAG_SYN)\r
{\r
- /* SYN connection when closed starts a connection with a peer */\r
+ /* SYN connection starts a connection with a peer */\r
+ if (TCP_SetConnectionState(TCPHeaderIN->DestinationPort, IPHeaderIN->SourceAddress,\r
+ TCPHeaderIN->SourcePort, TCP_Connection_SYNReceived))\r
+ {\r
+ TCPHeaderOUT->Flags = (TCP_FLAG_SYN | TCP_FLAG_ACK); \r
\r
- TCPHeaderOUT->Flags = (TCP_FLAG_SYN | TCP_FLAG_ACK); \r
- PacketResponse = true;\r
- \r
- TCP_SetConnectionState(TCPHeaderIN->DestinationPort, IPHeaderIN->SourceAddress, TCPHeaderIN->SourcePort,\r
- TCP_Connection_SYNReceived);\r
- \r
- ConnectionInfo = TCP_GetConnectionInfo(TCPHeaderIN->DestinationPort, IPHeaderIN->SourceAddress, TCPHeaderIN->SourcePort);\r
+ ConnectionInfo = TCP_GetConnectionInfo(TCPHeaderIN->DestinationPort, IPHeaderIN->SourceAddress, TCPHeaderIN->SourcePort);\r
\r
- ConnectionInfo->SequenceNumberIn = (SwapEndian_32(TCPHeaderIN->SequenceNumber) + 1);\r
- ConnectionInfo->SequenceNumberOut = 0;\r
- ConnectionInfo->Buffer.InUse = false;\r
+ ConnectionInfo->SequenceNumberIn = (SwapEndian_32(TCPHeaderIN->SequenceNumber) + 1);\r
+ ConnectionInfo->SequenceNumberOut = 0;\r
+ ConnectionInfo->Buffer.InUse = false;\r
+ }\r
+ else\r
+ {\r
+ TCPHeaderOUT->Flags = TCP_FLAG_RST;\r
+ }\r
+ \r
+ PacketResponse = true;\r
}\r
\r
break;\r
projects / pub / USBasp.git / blobdiff