X-Git-Url: http://g0dil.de/git?a=blobdiff_plain;f=Packets%2F80211Bundle%2FWLANPacket.hh;h=3138826198e38d07f7e3bb1c4e50ff6b2db7ac8a;hb=d3cc92544f3efc741d14c36e4cd89e311a6867fa;hp=47f4930ace53e05b6d2e0f3f91330b3bcb7590c6;hpb=3449642e5fd7b1c83c866b98f2462c2323edddf0;p=senf.git diff --git a/Packets/80211Bundle/WLANPacket.hh b/Packets/80211Bundle/WLANPacket.hh index 47f4930..3138826 100644 --- a/Packets/80211Bundle/WLANPacket.hh +++ b/Packets/80211Bundle/WLANPacket.hh @@ -1,9 +1,9 @@ -// $Id:$ +// $Id$ // -// Copyright (C) 2006 +// Copyright (C) 2008 // Fraunhofer Institute for Open Communication Systems (FOKUS) // Competence Center NETwork research (NET), St. Augustin, GERMANY -// Christian Niephaus +// Christian Niephaus // // This program is free software; you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by @@ -21,17 +21,13 @@ // 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. /** \file - \brief 802.11 WLan MAC frame \n + \brief 802.11 WLANPacket public header */ - - */ - -#ifndef WLANPACKET_HH_ -#define WLANPACKET_HH_ +#ifndef HH_SENF_Packets_80211Bundle_WLANPacket_ +#define HH_SENF_Packets_80211Bundle_WLANPacket_ 1 #include "../../Packets/Packets.hh" #include "../DefaultBundle/EthernetPacket.hh" -#include namespace senf { @@ -40,29 +36,31 @@ namespace senf * Re-ordering of bits due to LSB byte order */ - struct WLANPacketParser_MgtFrameParser : public senf::PacketParserBase + struct WLANPacket_MgtFrameParser : public senf::PacketParserBase { # include SENF_FIXED_PARSER() - SENF_PARSER_PRIVATE_BITFIELD ( subtype, 4, unsigned); - SENF_PARSER_SKIP_BITS ( 4 ); //skip type and version + + SENF_PARSER_PRIVATE_BITFIELD ( subtype, 4, unsigned ); + SENF_PARSER_SKIP_BITS ( 4 ); //skip type and version //jump to fist address field - SENF_PARSER_SKIP ( 3 ); - SENF_PARSER_FIELD ( da, MACAddressParser ); - SENF_PARSER_FIELD ( sa, MACAddressParser ); - SENF_PARSER_FIELD ( bssid, MACAddressParser ); + SENF_PARSER_SKIP ( 3 ); + SENF_PARSER_FIELD ( destinationAddress, MACAddressParser ); + SENF_PARSER_FIELD ( sourceAddress, MACAddressParser ); + SENF_PARSER_FIELD ( bssid, MACAddressParser ); //workaround since bitfield LSB parsers are not available - SENF_PARSER_PRIVATE_BITFIELD (seqNumber_1, 4, unsigned); - SENF_PARSER_BITFIELD (fragmentNumber, 4, unsigned); - SENF_PARSER_PRIVATE_FIELD (seqNumber_2, UInt8Parser); + SENF_PARSER_PRIVATE_BITFIELD ( seqNumber_1, 4, unsigned ); + SENF_PARSER_BITFIELD ( fragmentNumber, 4, unsigned ); + SENF_PARSER_PRIVATE_FIELD ( seqNumber_2, UInt8Parser ); - SENF_PARSER_FINALIZE(WLANPacketParser_MgtFrameParser); + SENF_PARSER_FINALIZE(WLANPacket_MgtFrameParser); //this is needed due to the goto in the WLANPacketParser. Don't know exactly why yet. SENF_PARSER_INIT() {} - boost::uint16_t sequenceNumber() const; - + boost::uint16_t sequenceNumber() const { + return (uint16_t)(seqNumber_2()) << 4 | seqNumber_1(); + }; }; /** \brief Control frame parser @@ -71,23 +69,24 @@ namespace senf * currently only CTS, RTS and ACK control frames are supported */ - struct WLANPacketParser_CtrlFrameParser : public senf::PacketParserBase + struct WLANPacket_CtrlFrameParser : public senf::PacketParserBase { # include SENF_PARSER() - SENF_PARSER_PRIVATE_BITFIELD ( subtype, 4, unsigned); - SENF_PARSER_SKIP_BITS ( 4 ); //skip type and version + + SENF_PARSER_PRIVATE_BITFIELD ( subtype, 4, unsigned ); + SENF_PARSER_SKIP_BITS ( 4 ); //skip type and version //jump to fist address field - SENF_PARSER_SKIP ( 3,3 ); - SENF_PARSER_FIELD ( ra, MACAddressParser ); + SENF_PARSER_SKIP ( 3, 3 ); + SENF_PARSER_FIELD ( receiverAddress, MACAddressParser ); //only RTS frame contains a source address field - //variant is also needed so set to correct subtype value - SENF_PARSER_VARIANT ( subtype__, subtype, - ( ids (na, na, set_cts, key(12, VoidPacketParser)) ) - ( ids (na, na, set_ack, key(13, VoidPacketParser)) ) - ( ids (sa, has_sa, set_rts, key(11, MACAddressParser)) ) ); + //variant is also needed to set correct subtype value + SENF_PARSER_VARIANT ( subtype__, subtype, + ( ids( na, is_cts, set_cts, key(12, VoidPacketParser)) ) + ( ids( na, is_ack, set_ack, key(13, VoidPacketParser)) ) + ( ids( sourceAddress, is_rts, set_rts, key(11, MACAddressParser)) ) ); - SENF_PARSER_FINALIZE(WLANPacketParser_CtrlFrameParser); + SENF_PARSER_FINALIZE(WLANPacket_CtrlFrameParser); //this is needed to due to the goto in the WLANPacketParser. Don't know exactly why yet. SENF_PARSER_INIT() {} @@ -97,29 +96,29 @@ namespace senf * Re-ordering of bits due to LSB byte order */ - struct WLANPacketParser_DataFrameParser : public senf::PacketParserBase + struct WLANPacket_DataFrameParser : public senf::PacketParserBase { # include SENF_PARSER() - SENF_PARSER_PRIVATE_BITFIELD ( subtype, 4, unsigned); + SENF_PARSER_PRIVATE_BITFIELD ( subtype, 4, unsigned ); //jump to 'toDS' and 'fromDS' bits //skip type and version - SENF_PARSER_SKIP_BITS ( 4 ); + SENF_PARSER_SKIP_BITS ( 4 ); //skip other flags - SENF_PARSER_SKIP_BITS ( 6 ); + SENF_PARSER_SKIP_BITS ( 6 ); //needed in data frames due to the variable address fields - SENF_PARSER_PRIVATE_BITFIELD ( dsBits, 2, unsigned); + SENF_PARSER_PRIVATE_BITFIELD ( dsBits, 2, unsigned ); //skip duration field - SENF_PARSER_SKIP ( 2,0 ); + SENF_PARSER_SKIP ( 2, 0 ); - SENF_PARSER_PRIVATE_FIELD ( addr1, MACAddressParser ); - SENF_PARSER_PRIVATE_FIELD ( addr2, MACAddressParser ); - SENF_PARSER_PRIVATE_FIELD ( addr3, MACAddressParser ); + SENF_PARSER_PRIVATE_FIELD ( addr1, MACAddressParser ); + SENF_PARSER_PRIVATE_FIELD ( addr2, MACAddressParser ); + SENF_PARSER_PRIVATE_FIELD ( addr3, MACAddressParser ); //sequence Number and fragment number //shift bits manually due to LSB - SENF_PARSER_PRIVATE_BITFIELD (seqNumber_1, 4, unsigned); - SENF_PARSER_BITFIELD (fragmentNumber, 4, unsigned); - SENF_PARSER_PRIVATE_FIELD (seqNumber_2, UInt8Parser) + SENF_PARSER_PRIVATE_BITFIELD ( seqNumber_1, 4, unsigned ); + SENF_PARSER_BITFIELD ( fragmentNumber, 4, unsigned ); + SENF_PARSER_PRIVATE_FIELD ( seqNumber_2, UInt8Parser ); //TODO fourth address field in case of WDS // SENF_PARSER_PRIVATE_VARIANT (wds_, dsBits, @@ -127,26 +126,26 @@ namespace senf // ( id ( addr4, key (3, MACAddressParser ))) ); //QoS Filed - SENF_PARSER_VARIANT (qosField_, subtype, - ( ids (na, na, set_data, key(0, VoidPacketParser))) - ( ids (na, na, set_nullData, key(4, VoidPacketParser))) - ( ids (qosField, has_qosField, set_qosData, key(8, UInt16LSBParser))) + SENF_PARSER_VARIANT ( qosField_, subtype, + ( ids( na, na, set_data, key(0, VoidPacketParser)) ) + ( ids( na, na, set_nullData, key(4, VoidPacketParser)) ) + ( ids( qosField, has_qosField, set_qosData, key(8, UInt16LSBParser )) ) //we cannot parse qos Null (data) frames at the moment - ( ids (na, na, set_qosNullData, key(12, UInt16LSBParser))) ); - + ( ids( na, na, set_qosNullData, key(12, UInt16LSBParser)) ) ); - - SENF_PARSER_FINALIZE(WLANPacketParser_DataFrameParser); + SENF_PARSER_FINALIZE(WLANPacket_DataFrameParser); //this is needed to due to the goto in the WLANPacketParser. Don't know exactly why yet. SENF_PARSER_INIT() {} - boost::uint16_t sequenceNumber() const; + boost::uint16_t sequenceNumber() const { + return (uint16_t)(seqNumber_2()) << 4 | seqNumber_1(); + }; - MACAddressParser ra() const { return addr1(); }; //ra is always addr1 - MACAddressParser ta() const { return addr2(); }; //ta is always addr2 - MACAddressParser sa() const; - MACAddressParser da() const; + MACAddressParser receiverAddress() const { return addr1(); }; //ra is always addr1 + MACAddressParser transmitterAddress() const { return addr2(); }; //ta is always addr2 + MACAddressParser sourceAddress() const; + MACAddressParser destinationAddress() const; MACAddressParser bssid() const; }; @@ -164,36 +163,34 @@ namespace senf * Frame control field * re-ordering of fields due to the byte order */ - SENF_PARSER_BITFIELD_RO ( subtype, 4, unsigned); - SENF_PARSER_BITFIELD_RO ( type, 2, unsigned); - SENF_PARSER_BITFIELD ( version, 2, unsigned); - SENF_PARSER_BITFIELD ( order, 1, bool); - SENF_PARSER_BITFIELD ( protectedFrame, 1, bool); - SENF_PARSER_BITFIELD ( moreData, 1, bool); - SENF_PARSER_BITFIELD ( pwrMgt, 1, bool); - SENF_PARSER_BITFIELD ( retry, 1, bool); - SENF_PARSER_BITFIELD ( moreFrag, 1, bool); - SENF_PARSER_BITFIELD ( fromDS, 1, bool); - SENF_PARSER_BITFIELD ( toDS, 1, bool); - - SENF_PARSER_FIELD (duration, UInt16LSBParser); - - SENF_PARSER_GOTO( subtype ); //subparsers need to know the subtype - SENF_PARSER_VARIANT ( type__, type, - ( id ( mgtFrame, WLANPacketParser_MgtFrameParser )) - ( id ( ctrlFrame, WLANPacketParser_CtrlFrameParser )) - ( id ( dataFrame, WLANPacketParser_DataFrameParser )) - ( novalue ( reserved, WLANPacketParser_CtrlFrameParser )) ); - - SENF_PARSER_CUSTOM_FIELD( fcs, senf:: UInt32Parser, fcs_t::fixed_bytes, fcs_t::fixed_bytes) { + SENF_PARSER_BITFIELD_RO ( subtype, 4, unsigned ); + SENF_PARSER_BITFIELD_RO ( type, 2, unsigned ); + SENF_PARSER_BITFIELD ( version, 2, unsigned ); + SENF_PARSER_BITFIELD ( order, 1, bool ); + SENF_PARSER_BITFIELD ( protectedFrame, 1, bool ); + SENF_PARSER_BITFIELD ( moreData, 1, bool ); + SENF_PARSER_BITFIELD ( pwrMgt, 1, bool ); + SENF_PARSER_BITFIELD ( retry, 1, bool ); + SENF_PARSER_BITFIELD ( moreFrag, 1, bool ); + SENF_PARSER_BITFIELD ( fromDS, 1, bool ); + SENF_PARSER_BITFIELD ( toDS, 1, bool ); + + SENF_PARSER_FIELD ( duration, UInt16LSBParser ); + + SENF_PARSER_GOTO( subtype ); // subparsers need to know the subtype + SENF_PARSER_VARIANT ( frameType_, type, + ( ids( mgtFrame, is_mgtFrame, init_mgtFrame, WLANPacket_MgtFrameParser )) + ( ids( ctrlFrame, is_ctrlFrame, init_ctrlFrame, WLANPacket_CtrlFrameParser )) + ( ids( dataFrame, is_dataFrame, init_dataFrame, WLANPacket_DataFrameParser )) + ( novalue( reserved, WLANPacket_CtrlFrameParser )) ); + + SENF_PARSER_CUSTOM_FIELD( fcs, senf::UInt32Parser, fcs_t::fixed_bytes, fcs_t::fixed_bytes) { return parse( data().size()-4 ); } SENF_PARSER_FINALIZE(WLANPacketParser); SENF_PARSER_INIT() { version() = 0; - - } //Problems can occur with old madwifi and ath5k. Some frames only @@ -202,11 +199,20 @@ namespace senf }; + /** \brief WLAN packet + + \par Packet type (typedef): + \ref WLANPacket + + \par Fields: + \ref WLANPacketParser + + \ingroup protocolbundle_80211 + */ struct WLANPacketType : public senf::PacketTypeBase, - public senf::PacketTypeMixin + public senf::PacketTypeMixin { - typedef senf::PacketTypeMixin mixin; typedef senf::ConcretePacket packet; typedef WLANPacketParser parser; @@ -216,15 +222,12 @@ namespace senf using mixin::initSize; using senf::PacketTypeBase::nextPacketRange;; - static void dump(packet p, std::ostream &os); // static PacketParserBase::size_type initSize(); }; - typedef WLANPacketType::packet WLANPacket; - + typedef senf::ConcretePacket WLANPacket; } - -#endif /* WLANPACKET_HH_ */ +#endif /* HH_SENF_Packets_80211Bundle_WLANPacket_ */