Make board specific and device peripheral specific drivers' file documentation copy...

[pub/USBasp.git] / Demos / Device / ClassDriver / RNDISEthernet / Lib / TCP.c

diff --git a/Demos/Device/ClassDriver/RNDISEthernet/Lib/TCP.c b/Demos/Device/ClassDriver/RNDISEthernet/Lib/TCP.c
index 6746433..42041b5 100644 (file)
--- a/Demos/Device/ClassDriver/RNDISEthernet/Lib/TCP.c
+++ b/Demos/Device/ClassDriver/RNDISEthernet/Lib/TCP.c
@@ -1,21 +1,21 @@
 /*\r
              LUFA Library\r
 /*\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
               \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
   software without specific, written prior permission.\r
 \r
   The author disclaim all warranties with regard to this\r


@@ -38,7 +38,6 @@
 #define  INCLUDE_FROM_TCP_C\r
 #include "TCP.h"\r
 \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
 /** 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


@@ -58,25 +57,27 @@ TCP_ConnectionState_t  ConnectionStateTable[MAX_TCP_CONNECTIONS];
  */\r
 void TCP_TCPTask(USB_ClassInfo_RNDIS_Device_t* RNDISInterfaceInfo)\r
 {\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
        /* 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
                {\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
                        }\r
                }\r
        }\r
        \r

+       /* Get pointer to the output frame info struct for convenience */\r
+       Ethernet_Frame_Info_t* FrameOUT = (Ethernet_Frame_Info_t*)&RNDISInterfaceInfo->State.FrameOUT;\r
+       \r

        /* Bail out early if there is already a frame waiting to be sent in the Ethernet OUT buffer */\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
          return;\r
        \r
        /* Send response packets from each application as the TCP packet buffers are filled by the applications */\r


@@ -86,13 +87,13 @@ void TCP_TCPTask(USB_ClassInfo_RNDIS_Device_t* RNDISInterfaceInfo)
                if ((ConnectionStateTable[CSTableEntry].Info.Buffer.Direction == TCP_PACKETDIR_OUT) &&\r
                    (ConnectionStateTable[CSTableEntry].Info.Buffer.Ready))\r
                {\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
 \r
                        uint16_t PacketSize = ConnectionStateTable[CSTableEntry].Info.Buffer.Length;\r
 \r


@@ -145,8 +146,8 @@ void TCP_TCPTask(USB_ClassInfo_RNDIS_Device_t* RNDISInterfaceInfo)
                        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
                        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
                        \r
                        ConnectionStateTable[CSTableEntry].Info.Buffer.Ready = false;\r
                        \r


@@ -367,11 +368,12 @@ int16_t TCP_ProcessTCPPacket(void* IPHeaderInStart, void* TCPHeaderInStart, void
                /* Detect RST from host to abort existing connection */\r
                if (TCPHeaderIN->Flags & TCP_FLAG_RST)\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
                }\r
                else\r
                {\r


@@ -381,19 +383,24 @@ int16_t TCP_ProcessTCPPacket(void* IPHeaderInStart, void* TCPHeaderInStart, void
                                case TCP_Connection_Listen:\r
                                        if (TCPHeaderIN->Flags == TCP_FLAG_SYN)\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
 \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
 \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
                                        }\r
                                        \r
                                        break;\r