-/*\r
- LUFA Library\r
- Copyright (C) Dean Camera, 2009.\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
- software without specific, written prior permission.\r
-\r
- The author disclaim all warranties with regard to this\r
- software, including all implied warranties of merchantability\r
- and fitness. In no event shall the author be liable for any\r
- special, indirect or consequential damages or any damages\r
- whatsoever resulting from loss of use, data or profits, whether\r
- in an action of contract, negligence or other tortious action,\r
- arising out of or in connection with the use or performance of\r
- this software.\r
-*/\r
-\r
-/** \file\r
- *\r
- * User Datagram Protocol (UDP) packet handling routines. This protocol handles high throughput, low\r
- * reliability packets which are typically used to encapsulate streaming data.\r
- */\r
- \r
-#define INCLUDE_FROM_UDP_C\r
-#include "UDP.h"\r
-\r
-/** Processes a UDP packet inside an Ethernet frame, and writes the appropriate response\r
- * to the output Ethernet frame if a subprotocol handler has created a response packet.\r
- *\r
- * \param[in] IPHeaderInStart Pointer to the start of the incoming packet's IP header\r
- * \param[in] UDPHeaderInStart Pointer to the start of the incoming packet's UDP header\r
- * \param[out] UDPHeaderOutStart Pointer to the start of the outgoing packet's UDP header\r
- *\r
- * \return The number of bytes written to the out Ethernet frame if any, NO_RESPONSE otherwise\r
- */\r
-int16_t UDP_ProcessUDPPacket(void* IPHeaderInStart, void* UDPHeaderInStart, void* UDPHeaderOutStart)\r
-{\r
- UDP_Header_t* UDPHeaderIN = (UDP_Header_t*)UDPHeaderInStart;\r
- UDP_Header_t* UDPHeaderOUT = (UDP_Header_t*)UDPHeaderOutStart;\r
- \r
- int16_t RetSize = NO_RESPONSE;\r
- \r
- DecodeUDPHeader(UDPHeaderInStart);\r
- \r
- /* Check to see if the UDP packet is a DHCP packet */\r
- if (SwapEndian_16(UDPHeaderIN->DestinationPort) == UDP_PORT_DHCP_REQUEST)\r
- {\r
- RetSize = DHCP_ProcessDHCPPacket(IPHeaderInStart,\r
- &((uint8_t*)UDPHeaderInStart)[sizeof(UDP_Header_t)],\r
- &((uint8_t*)UDPHeaderOutStart)[sizeof(UDP_Header_t)]);\r
- }\r
- \r
- /* Check to see if the protocol processing routine has filled out a response */\r
- if (RetSize > 0)\r
- {\r
- /* Fill out the response UDP packet header */\r
- UDPHeaderOUT->SourcePort = UDPHeaderIN->DestinationPort;\r
- UDPHeaderOUT->DestinationPort = UDPHeaderIN->SourcePort;\r
- UDPHeaderOUT->Checksum = 0;\r
- UDPHeaderOUT->Length = SwapEndian_16(sizeof(UDP_Header_t) + RetSize);\r
-\r
- /* Return the size of the response so far */\r
- return (sizeof(UDP_Header_t) + RetSize);\r
- }\r
- \r
- return NO_RESPONSE;\r
-}\r
+/*
+ LUFA Library
+ Copyright (C) Dean Camera, 2011.
+
+ dean [at] fourwalledcubicle [dot] com
+ www.lufa-lib.org
+*/
+
+/*
+ Copyright 2011 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 disclaim 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
+ *
+ * User Datagram Protocol (UDP) packet handling routines. This protocol handles high throughput, low
+ * reliability packets which are typically used to encapsulate streaming data.
+ */
+
+#define INCLUDE_FROM_UDP_C
+#include "UDP.h"
+
+/** Processes a UDP packet inside an Ethernet frame, and writes the appropriate response
+ * to the output Ethernet frame if a sub-protocol handler has created a response packet.
+ *
+ * \param[in] IPHeaderInStart Pointer to the start of the incoming packet's IP header
+ * \param[in] UDPHeaderInStart Pointer to the start of the incoming packet's UDP header
+ * \param[out] UDPHeaderOutStart Pointer to the start of the outgoing packet's UDP header
+ *
+ * \return The number of bytes written to the out Ethernet frame if any, NO_RESPONSE otherwise
+ */
+int16_t UDP_ProcessUDPPacket(void* IPHeaderInStart,
+ void* UDPHeaderInStart,
+ void* UDPHeaderOutStart)
+{
+ UDP_Header_t* UDPHeaderIN = (UDP_Header_t*)UDPHeaderInStart;
+ UDP_Header_t* UDPHeaderOUT = (UDP_Header_t*)UDPHeaderOutStart;
+
+ int16_t RetSize = NO_RESPONSE;
+
+ DecodeUDPHeader(UDPHeaderInStart);
+
+ switch (SwapEndian_16(UDPHeaderIN->DestinationPort))
+ {
+ case UDP_PORT_DHCP_REQUEST:
+ RetSize = DHCP_ProcessDHCPPacket(IPHeaderInStart,
+ &((uint8_t*)UDPHeaderInStart)[sizeof(UDP_Header_t)],
+ &((uint8_t*)UDPHeaderOutStart)[sizeof(UDP_Header_t)]);
+ break;
+ }
+
+ /* Check to see if the protocol processing routine has filled out a response */
+ if (RetSize > 0)
+ {
+ /* Fill out the response UDP packet header */
+ UDPHeaderOUT->SourcePort = UDPHeaderIN->DestinationPort;
+ UDPHeaderOUT->DestinationPort = UDPHeaderIN->SourcePort;
+ UDPHeaderOUT->Checksum = 0;
+ UDPHeaderOUT->Length = SwapEndian_16(sizeof(UDP_Header_t) + RetSize);
+
+ /* Return the size of the response so far */
+ return (sizeof(UDP_Header_t) + RetSize);
+ }
+
+ return NO_RESPONSE;
+}
+
projects / pub / USBasp.git / blobdiff