/*
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
* Internet Protocol (IP) packet handling routines. This protocol handles IP packets from the
* host which typically encapsulate other protocols such as ICMP, UDP and TCP.
*/
-
+
#include "IP.h"
/** Processes an IP packet inside an Ethernet frame, and writes the appropriate response
{
return NO_RESPONSE;
}
-
+
/* Pass off the IP payload to the appropriate protocol processing routine */
switch (IPHeaderIN->Protocol)
{
case PROTOCOL_TCP:
RetSize = TCP_ProcessTCPPacket(InDataStart,
&((uint8_t*)InDataStart)[HeaderLengthBytes],
- &((uint8_t*)OutDataStart)[sizeof(IP_Header_t)]);
+ &((uint8_t*)OutDataStart)[sizeof(IP_Header_t)]);
break;
case PROTOCOL_UDP:
RetSize = UDP_ProcessUDPPacket(InDataStart,
&((uint8_t*)InDataStart)[HeaderLengthBytes],
- &((uint8_t*)OutDataStart)[sizeof(IP_Header_t)]);
+ &((uint8_t*)OutDataStart)[sizeof(IP_Header_t)]);
break;
}
-
+
/* Check to see if the protocol processing routine has filled out a response */
if (RetSize > 0)
{
IPHeaderOUT->TTL = DEFAULT_TTL;
IPHeaderOUT->SourceAddress = IPHeaderIN->DestinationAddress;
IPHeaderOUT->DestinationAddress = IPHeaderIN->SourceAddress;
-
+
IPHeaderOUT->HeaderChecksum = Ethernet_Checksum16(IPHeaderOUT, sizeof(IP_Header_t));
-
+
/* Return the size of the response so far */
return (sizeof(IP_Header_t) + RetSize);
}
-
+
return RetSize;
}
+