diff options
Diffstat (limited to 'lib/lufa/Demos/Device/LowLevel/RNDISEthernet/Lib/ICMP.c')
| -rw-r--r-- | lib/lufa/Demos/Device/LowLevel/RNDISEthernet/Lib/ICMP.c | 81 |
1 files changed, 0 insertions, 81 deletions
diff --git a/lib/lufa/Demos/Device/LowLevel/RNDISEthernet/Lib/ICMP.c b/lib/lufa/Demos/Device/LowLevel/RNDISEthernet/Lib/ICMP.c deleted file mode 100644 index b144c4c517..0000000000 --- a/lib/lufa/Demos/Device/LowLevel/RNDISEthernet/Lib/ICMP.c +++ /dev/null @@ -1,81 +0,0 @@ -/* - LUFA Library - Copyright (C) Dean Camera, 2017. - - dean [at] fourwalledcubicle [dot] com - www.lufa-lib.org -*/ - -/* - Copyright 2017 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 disclaims 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 - * - * Internet Control Message Protocol (ICMP) packet handling routines. This protocol handles - * 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 - * to the output Ethernet frame if the host is issuing a ICMP ECHO request. - * - * \param[in] InDataStart Pointer to the start of the incoming packet's ICMP header - * \param[out] OutDataStart Pointer to the start of the outgoing packet's ICMP header - * - * \return The number of bytes written to the out Ethernet frame if any, NO_RESPONSE otherwise - */ -int16_t ICMP_ProcessICMPPacket(void* InDataStart, - void* OutDataStart) -{ - ICMP_Header_t* ICMPHeaderIN = (ICMP_Header_t*)InDataStart; - ICMP_Header_t* ICMPHeaderOUT = (ICMP_Header_t*)OutDataStart; - - DecodeICMPHeader(InDataStart); - - /* Determine if the ICMP packet is an echo request (ping) */ - if (ICMPHeaderIN->Type == ICMP_TYPE_ECHOREQUEST) - { - /* Fill out the ICMP response packet */ - ICMPHeaderOUT->Type = ICMP_TYPE_ECHOREPLY; - ICMPHeaderOUT->Code = 0; - ICMPHeaderOUT->Checksum = 0; - ICMPHeaderOUT->Id = ICMPHeaderIN->Id; - ICMPHeaderOUT->Sequence = ICMPHeaderIN->Sequence; - - 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 */ - 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; -} - |