Oops: Really disable building of Projects/Host/ClassDriver directory in the Projects...

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

diff --git a/Demos/Device/LowLevel/RNDISEthernet/Lib/TCP.c b/Demos/Device/LowLevel/RNDISEthernet/Lib/TCP.c
index f259aad..2537286 100644 (file)
--- a/Demos/Device/LowLevel/RNDISEthernet/Lib/TCP.c
+++ b/Demos/Device/LowLevel/RNDISEthernet/Lib/TCP.c
@@ -56,21 +56,20 @@ TCP_ConnectionState_t  ConnectionStateTable[MAX_TCP_CONNECTIONS];
  *  level. If an application produces a response, this task constructs the appropriate Ethernet frame and places it into the Ethernet OUT\r
  *  buffer for later transmission.\r
  */\r
  *  level. If an application produces a response, this task constructs the appropriate Ethernet frame and places it into the Ethernet OUT\r
  *  buffer for later transmission.\r
  */\r

-TASK(TCP_Task)\r
+void TCP_Task(void)\r

 {\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


@@ -89,7 +88,7 @@ TASK(TCP_Task)
                        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
                        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
+                                                                                                    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
                        void*                    TCPDataOUT     = &FrameOUT.FrameData[sizeof(Ethernet_Frame_Header_t) +\r
                                                                                      sizeof(IP_Header_t) +\r
                                                                                      sizeof(TCP_Header_t)];\r


@@ -171,9 +170,9 @@ void TCP_Init(void)
 \r
 /** Sets the state and callback handler of the given port, specified in big endian to the given state.\r
  *\r
 \r
 /** Sets the state and callback handler of the given port, specified in big endian to the given state.\r
  *\r

- *  \param Port     Port whose state and callback function to set, specified in big endian\r
- *  \param State    New state of the port, a value from the TCP_PortStates_t enum\r
- *  \param Handler  Application callback handler for the port\r
+ *  \param[in] Port     Port whose state and callback function to set, specified in big endian\r
+ *  \param[in] State    New state of the port, a value from the TCP_PortStates_t enum\r
+ *  \param[in] Handler  Application callback handler for the port\r

  *\r
  *  \return Boolean true if the port state was set, false otherwise (no more space in the port state table)\r
  */\r
  *\r
  *  \return Boolean true if the port state was set, false otherwise (no more space in the port state table)\r
  */\r


@@ -220,7 +219,7 @@ bool TCP_SetPortState(uint16_t Port, uint8_t State, void (*Handler)(TCP_Connecti
 \r
 /** Retrieves the current state of a given TCP port, specified in big endian.\r
  *\r
 \r
 /** Retrieves the current state of a given TCP port, specified in big endian.\r
  *\r

- *  \param Port  TCP port whose state is to be retrieved, given in big-endian\r
+ *  \param[in] Port  TCP port whose state is to be retrieved, given in big-endian\r

  *\r
  *  \return A value from the TCP_PortStates_t enum\r
  */\r
  *\r
  *  \return A value from the TCP_PortStates_t enum\r
  */\r


@@ -242,10 +241,10 @@ uint8_t TCP_GetPortState(uint16_t Port)
 /** Sets the connection state of the given port, remote address and remote port to the given TCP connection state. If the\r
  *  connection exists in the connection state table it is updated, otherwise it is created if possible.\r
  *\r
 /** Sets the connection state of the given port, remote address and remote port to the given TCP connection state. If the\r
  *  connection exists in the connection state table it is updated, otherwise it is created if possible.\r
  *\r

- *  \param Port           TCP port of the connection on the device, specified in big endian\r
- *  \param RemoteAddress  Remote protocol IP address of the connected device\r
- *  \param RemotePort     TCP port of the remote device in the connection, specified in big endian\r
- *  \param State          TCP connection state, a value from the TCP_ConnectionStates_t enum\r
+ *  \param[in] Port           TCP port of the connection on the device, specified in big endian\r
+ *  \param[in] RemoteAddress  Remote protocol IP address of the connected device\r
+ *  \param[in] RemotePort     TCP port of the remote device in the connection, specified in big endian\r
+ *  \param[in] State          TCP connection state, a value from the TCP_ConnectionStates_t enum\r

  *\r
  *  \return Boolean true if the connection was updated or created, false otherwise (no more space in the connection state table)\r
  */\r
  *\r
  *  \return Boolean true if the connection was updated or created, false otherwise (no more space in the connection state table)\r
  */\r


@@ -283,9 +282,9 @@ bool TCP_SetConnectionState(uint16_t Port, IP_Address_t RemoteAddress, uint16_t
 \r
 /** Retrieves the current state of a given TCP connection to a host.\r
  *\r
 \r
 /** Retrieves the current state of a given TCP connection to a host.\r
  *\r

- *  \param Port           TCP port on the device in the connection, specified in big endian\r
- *  \param RemoteAddress  Remote protocol IP address of the connected host\r
- *  \param RemotePort     Remote TCP port of the connected host, specified in big endian\r
+ *  \param[in] Port           TCP port on the device in the connection, specified in big endian\r
+ *  \param[in] RemoteAddress  Remote protocol IP address of the connected host\r
+ *  \param[in] RemotePort     Remote TCP port of the connected host, specified in big endian\r

  *\r
  *  \return A value from the TCP_ConnectionStates_t enum\r
  */\r
  *\r
  *  \return A value from the TCP_ConnectionStates_t enum\r
  */\r


@@ -310,9 +309,9 @@ uint8_t TCP_GetConnectionState(uint16_t Port, IP_Address_t RemoteAddress, uint16
 \r
 /** Retrieves the connection info structure of a given connection to a host.\r
  *\r
 \r
 /** Retrieves the connection info structure of a given connection to a host.\r
  *\r

- *  \param Port           TCP port on the device in the connection, specified in big endian\r
- *  \param RemoteAddress  Remote protocol IP address of the connected host\r
- *  \param RemotePort     Remote TCP port of the connected host, specified in big endian\r
+ *  \param[in] Port           TCP port on the device in the connection, specified in big endian\r
+ *  \param[in] RemoteAddress  Remote protocol IP address of the connected host\r
+ *  \param[in] RemotePort     Remote TCP port of the connected host, specified in big endian\r

  *\r
  *  \return ConnectionInfo structure of the connection if found, NULL otherwise\r
  */\r
  *\r
  *  \return ConnectionInfo structure of the connection if found, NULL otherwise\r
  */\r


@@ -337,9 +336,9 @@ TCP_ConnectionInfo_t* TCP_GetConnectionInfo(uint16_t Port, IP_Address_t RemoteAd
 /** Processes a TCP packet inside an Ethernet frame, and writes the appropriate response\r
  *  to the output Ethernet frame if one is created by a application handler.\r
  *\r
 /** Processes a TCP packet inside an Ethernet frame, and writes the appropriate response\r
  *  to the output Ethernet frame if one is created by a application handler.\r
  *\r

- *  \param IPHeaderInStart    Pointer to the start of the incoming packet's IP header\r
- *  \param TCPHeaderInStart   Pointer to the start of the incoming packet's TCP header\r
- *  \param TCPHeaderOutStart  Pointer to the start of the outgoing packet's TCP header\r
+ *  \param[in] IPHeaderInStart     Pointer to the start of the incoming packet's IP header\r
+ *  \param[in] TCPHeaderInStart    Pointer to the start of the incoming packet's TCP header\r
+ *  \param[out] TCPHeaderOutStart  Pointer to the start of the outgoing packet's TCP header\r

  *\r
  *  \return The number of bytes written to the out Ethernet frame if any, NO_RESPONSE if no\r
  *           response was generated, NO_PROCESS if the packet processing was deferred until the\r
  *\r
  *  \return The number of bytes written to the out Ethernet frame if any, NO_RESPONSE if no\r
  *           response was generated, NO_PROCESS if the packet processing was deferred until the\r


@@ -367,11 +366,12 @@ 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 +381,24 @@ 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


@@ -579,10 +584,10 @@ int16_t TCP_ProcessTCPPacket(void* IPHeaderInStart, void* TCPHeaderInStart, void
 /** Calculates the appropriate TCP checksum, consisting of the addition of the one's compliment of each word,\r
  *  complimented.\r
  *\r
 /** Calculates the appropriate TCP checksum, consisting of the addition of the one's compliment of each word,\r
  *  complimented.\r
  *\r

- *  \param TCPHeaderOutStart  Pointer to the start of the packet's outgoing TCP header\r
- *  \param SourceAddress      Source protocol IP address of the outgoing IP header\r
- *  \param SourceAddress      DestinationAddress protocol IP address of the outgoing IP header\r
- *  \param TCPOutSize         Size in bytes of the TCP data header and payload\r
+ *  \param[in] TCPHeaderOutStart   Pointer to the start of the packet's outgoing TCP header\r
+ *  \param[in] SourceAddress       Source protocol IP address of the outgoing IP header\r
+ *  \param[in] DestinationAddress  Destination protocol IP address of the outgoing IP header\r
+ *  \param[in] TCPOutSize          Size in bytes of the TCP data header and payload\r

  *\r
  *  \return A 16-bit TCP checksum value\r
  */\r
  *\r
  *  \return A 16-bit TCP checksum value\r
  */\r