/*
LUFA Library
- Copyright (C) Dean Camera, 2010.
-
+ Copyright (C) Dean Camera, 2011.
+
dean [at] fourwalledcubicle [dot] com
- www.fourwalledcubicle.com
+ www.lufa-lib.org
*/
/*
- Copyright 2010 Dean Camera (dean [at] fourwalledcubicle [dot] com)
+ Copyright 2011 Dean Camera (dean [at] fourwalledcubicle [dot] com)
- Permission to use, copy, modify, distribute, and sell this
+ 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
+ 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
+ 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
* Echo requests from the host, to indicate a successful network connection between the host
* and the virtual server.
*/
-
+
#include "ICMP.h"
/** Processes an ICMP packet inside an Ethernet frame, and writes the appropriate response
*
* \return The number of bytes written to the out Ethernet frame if any, NO_RESPONSE otherwise
*/
-int16_t ICMP_ProcessICMPPacket(void* InDataStart, void* OutDataStart)
+int16_t ICMP_ProcessICMPPacket(void* InDataStart,
+ void* OutDataStart)
{
ICMP_Header_t* ICMPHeaderIN = (ICMP_Header_t*)InDataStart;
ICMP_Header_t* ICMPHeaderOUT = (ICMP_Header_t*)OutDataStart;
ICMPHeaderOUT->Checksum = 0;
ICMPHeaderOUT->Id = ICMPHeaderIN->Id;
ICMPHeaderOUT->Sequence = ICMPHeaderIN->Sequence;
-
- uint16_t DataSize = FrameIN.FrameLength - ((((uint16_t)InDataStart + sizeof(ICMP_Header_t)) - (uint16_t)FrameIN.FrameData));
-
+
+ intptr_t DataSize = FrameIN.FrameLength - ((((intptr_t)InDataStart + sizeof(ICMP_Header_t)) - (intptr_t)FrameIN.FrameData));
+
/* Copy the remaining payload to the response - echo requests should echo back any sent data */
- memcpy(&((uint8_t*)OutDataStart)[sizeof(ICMP_Header_t)],
- &((uint8_t*)InDataStart)[sizeof(ICMP_Header_t)],
- DataSize);
+ memmove(&((uint8_t*)OutDataStart)[sizeof(ICMP_Header_t)],
+ &((uint8_t*)InDataStart)[sizeof(ICMP_Header_t)],
+ DataSize);
ICMPHeaderOUT->Checksum = Ethernet_Checksum16(ICMPHeaderOUT, (DataSize + sizeof(ICMP_Header_t)));
/* Return the size of the response so far */
return (DataSize + sizeof(ICMP_Header_t));
}
-
+
return NO_RESPONSE;
}
+