1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/epoc32/include/arp_hdr.h Tue Mar 16 16:12:26 2010 +0000
1.3 @@ -0,0 +1,190 @@
1.4 +// Copyright (c) 2004-2009 Nokia Corporation and/or its subsidiary(-ies).
1.5 +// All rights reserved.
1.6 +// This component and the accompanying materials are made available
1.7 +// under the terms of the License "Symbian Foundation License v1.0" to Symbian Foundation members and "Symbian Foundation End User License Agreement v1.0" to non-members
1.8 +// which accompanies this distribution, and is available
1.9 +// at the URL "http://www.symbianfoundation.org/legal/licencesv10.html".
1.10 +//
1.11 +// Initial Contributors:
1.12 +// Nokia Corporation - initial contribution.
1.13 +//
1.14 +// Contributors:
1.15 +//
1.16 +// Description:
1.17 +// arp_hdr.h - ARP header structure
1.18 +// ARP header structure.
1.19 +//
1.20 +
1.21 +
1.22 +
1.23 +/**
1.24 + @file arp_hdr.h
1.25 + @ingroup ip_packet_formats
1.26 + @publishedAll
1.27 + @released
1.28 +*/
1.29 +
1.30 +#ifndef __ARP_HDR_H__
1.31 +#define __ARP_HDR_H__
1.32 +
1.33 +#include "in_hdr.h"
1.34 +
1.35 +/**
1.36 +* @addtogroup ip_packet_formats
1.37 +* @{
1.38 +*/
1.39 +
1.40 +/**
1.41 +* "Fake" protocol number for ARP.
1.42 +*
1.43 +* This protocol value is only used to recognize the ARP packets
1.44 +* coming from the interface. There is no "real" ARP.PRT.
1.45 +*/
1.46 +const TUint KProtocolArp = 0xFAD; // (get some better value)
1.47 +
1.48 +const TUint16 KArpProtocolType_IP = 0x0800; // Protocol Type value for IPv4
1.49 +//
1.50 +// Hardware types listed only as example, it is assumed that the
1.51 +// driver knows its own type...
1.52 +//
1.53 +const TUint16 KArpHarwareType_ETHERNET = 1;
1.54 +const TUint16 KArpHarwareType_IEEE_802 = 6;
1.55 +
1.56 +/**
1.57 +@publishedAll
1.58 +@released
1.59 +*/
1.60 +enum TArpOperation // from RFC-1700
1.61 + {
1.62 + EArpOperation_REQUEST = 1, // RFC-826
1.63 + EArpOperation_REPLY = 2, // RFC-826
1.64 + EArpOperation_REQUEST_REVERSE = 3, // RFC-903
1.65 + EArpOperation_REPLY_REVERSE = 4, // RFC-903
1.66 + EArpOperation_DRARP_REQUEST = 5, //
1.67 + EArpOperation_DRARP_REPLY = 6,
1.68 + EArpOperation_DRARP_ERROR = 7,
1.69 + EArpOperation_INARP_REQUEST = 8, // RFC-1293
1.70 + EArpOperation_INARP_REPLY = 9, // RFC-1293
1.71 + EArpOperation_ARP_NAK = 10
1.72 + };
1.73 +
1.74 +
1.75 +class TInet6HeaderArp
1.76 + /**
1.77 + * ARP Header.
1.78 + *
1.79 +@verbatim
1.80 + +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1.81 + | Hardware Type | Protocol Type |
1.82 + +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1.83 + | HwAddrLen | PrAddrLen | ARP Operation |
1.84 + +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1.85 + | Sender's physical hardware address |
1.86 + - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
1.87 + | Sender's protocol address |
1.88 + - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
1.89 + | Target's physical hardware address |
1.90 + - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
1.91 + | Target's protocol address |
1.92 + +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1.93 +@endverbatim
1.94 + * @note
1.95 + * This definition covers only the fixed portion of the
1.96 + * message. DO NOT DECLARE A VARIABLE WITH THIS CLASS!
1.97 + * @publishedAll
1.98 + * @released
1.99 + */
1.100 + {
1.101 +public:
1.102 + inline static TInt MinHeaderLength() {return 8; }
1.103 + inline static TInt MaxHeaderLength() {return 128; }
1.104 +
1.105 + inline TUint8* EndPtr() { return i + HeaderLength(); }
1.106 + inline TInt HeaderLength() const { return 8 + 2 * HwAddrLen() + 2 * PrAddrLen(); } // Return true byte length
1.107 +
1.108 + // Access methods
1.109 +
1.110 + inline TInt HardwareType() const // Return hardware type value in host order
1.111 + {
1.112 + return i[0] << 8 | i[1];
1.113 + }
1.114 +
1.115 + inline TInt ProtocolType() const // Return protocol type value in host order
1.116 + {
1.117 + return i[2] << 8 | i[3];
1.118 + }
1.119 +
1.120 + inline TInt HwAddrLen() const // Return hardware address length (in bytes)
1.121 + {
1.122 + return i[4];
1.123 + }
1.124 +
1.125 + inline TInt PrAddrLen() const // Return protocol address length (in bytes)
1.126 + {
1.127 + return i[5];
1.128 + }
1.129 +
1.130 + inline TInt Operation() const
1.131 + {
1.132 + return i[6] << 8 | i[7];
1.133 + }
1.134 +
1.135 + // Access/Modify
1.136 +
1.137 + inline TPtr8 SenderHwAddr()
1.138 + {
1.139 + return TPtr8(&i[8], HwAddrLen(), HwAddrLen());
1.140 + }
1.141 + inline TPtr8 SenderPrAddr()
1.142 + {
1.143 + return TPtr8(&i[8] + HwAddrLen(), PrAddrLen(), PrAddrLen());
1.144 + }
1.145 + inline TPtr8 TargetHwAddr()
1.146 + {
1.147 + return TPtr8(&i[8] + HwAddrLen() + PrAddrLen(), HwAddrLen(), HwAddrLen());
1.148 + }
1.149 + inline TPtr8 TargetPrAddr()
1.150 + {
1.151 + return TPtr8(&i[8] + 2*HwAddrLen() + PrAddrLen(), PrAddrLen(), PrAddrLen());
1.152 + }
1.153 +
1.154 + // Modify
1.155 +
1.156 + inline void SetHardwareType(TInt aType) // Set hardware type value
1.157 + {
1.158 + i[1] = (TUint8)aType;
1.159 + i[0] = (TUint8)(aType >> 8);
1.160 + }
1.161 +
1.162 + inline void SetProtocolType(TInt aType) // Set protocol type value
1.163 + {
1.164 + i[3] = (TUint8)aType;
1.165 + i[2] = (TUint8)(aType >> 8);
1.166 + }
1.167 +
1.168 + inline void SetHwAddrLen(TInt aLength) // Set hardware address length (in bytes)
1.169 + {
1.170 + i[4] = (TUint8)aLength;
1.171 + }
1.172 +
1.173 + inline void SetPrAddrLen(TInt aLength) // Set protocol address length (in bytes)
1.174 + {
1.175 + i[5] = (TUint8)aLength;
1.176 + }
1.177 +
1.178 + inline void SetOperation(TInt aOperation)
1.179 + {
1.180 + i[7] = (TUint8)aOperation;
1.181 + i[6] = (TUint8)(aOperation >> 8);
1.182 + }
1.183 +
1.184 +private:
1.185 + union
1.186 + {
1.187 + TUint8 i[8];
1.188 + TUint32 iAlign; // A dummy member to force the 4 byte alignment
1.189 + };
1.190 + };
1.191 +
1.192 +/** @} */
1.193 +#endif