diff options
Diffstat (limited to 'lib/lufa/Demos/Device/LowLevel/RNDISEthernet/Lib/IP.c')
| -rw-r--r-- | lib/lufa/Demos/Device/LowLevel/RNDISEthernet/Lib/IP.c | 113 |
1 files changed, 0 insertions, 113 deletions
diff --git a/lib/lufa/Demos/Device/LowLevel/RNDISEthernet/Lib/IP.c b/lib/lufa/Demos/Device/LowLevel/RNDISEthernet/Lib/IP.c deleted file mode 100644 index dfa583b853..0000000000 --- a/lib/lufa/Demos/Device/LowLevel/RNDISEthernet/Lib/IP.c +++ /dev/null @@ -1,113 +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 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 - * to the output Ethernet frame if one is created by a sub-protocol handler. - * - * \param[in] InDataStart Pointer to the start of the incoming packet's IP header - * \param[out] OutDataStart Pointer to the start of the outgoing packet's IP header - * - * \return The number of bytes written to the out Ethernet frame if any, NO_RESPONSE if no - * response was generated, NO_PROCESS if the packet processing was deferred until the - * next Ethernet packet handler iteration - */ -int16_t IP_ProcessIPPacket(void* InDataStart, - void* OutDataStart) -{ - DecodeIPHeader(InDataStart); - - IP_Header_t* IPHeaderIN = (IP_Header_t*)InDataStart; - IP_Header_t* IPHeaderOUT = (IP_Header_t*)OutDataStart; - - /* Header length is specified in number of longs in the packet header, convert to bytes */ - uint16_t HeaderLengthBytes = (IPHeaderIN->HeaderLength * sizeof(uint32_t)); - - int16_t RetSize = NO_RESPONSE; - - /* Check to ensure the IP packet is addressed to the virtual webserver's IP or the broadcast IP address */ - if (!(IP_COMPARE(&IPHeaderIN->DestinationAddress, &ServerIPAddress)) && - !(IP_COMPARE(&IPHeaderIN->DestinationAddress, &BroadcastIPAddress))) - { - return NO_RESPONSE; - } - - /* Pass off the IP payload to the appropriate protocol processing routine */ - switch (IPHeaderIN->Protocol) - { - case PROTOCOL_ICMP: - RetSize = ICMP_ProcessICMPPacket(&((uint8_t*)InDataStart)[HeaderLengthBytes], - &((uint8_t*)OutDataStart)[sizeof(IP_Header_t)]); - break; - case PROTOCOL_TCP: - RetSize = TCP_ProcessTCPPacket(InDataStart, - &((uint8_t*)InDataStart)[HeaderLengthBytes], - &((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)]); - break; - } - - /* Check to see if the protocol processing routine has filled out a response */ - if (RetSize > 0) - { - /* Fill out the response IP packet header */ - IPHeaderOUT->TotalLength = SwapEndian_16(sizeof(IP_Header_t) + RetSize); - IPHeaderOUT->TypeOfService = 0; - IPHeaderOUT->HeaderLength = (sizeof(IP_Header_t) / sizeof(uint32_t)); - IPHeaderOUT->Version = 4; - IPHeaderOUT->Flags = 0; - IPHeaderOUT->FragmentOffset = 0; - IPHeaderOUT->Identification = 0; - IPHeaderOUT->HeaderChecksum = 0; - IPHeaderOUT->Protocol = IPHeaderIN->Protocol; - 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; -} - |