4 // Fraunhofer Institute for Open Communication Systems (FOKUS)
5 // Competence Center NETwork research (NET), St. Augustin, GERMANY
6 // Philipp Batroff <pug@berlios.de>
8 // This program is free software; you can redistribute it and/or modify
9 // it under the terms of the GNU General Public License as published by
10 // the Free Software Foundation; either version 2 of the License, or
11 // (at your option) any later version.
13 // This program is distributed in the hope that it will be useful,
14 // but WITHOUT ANY WARRANTY; without even the implied warranty of
15 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 // GNU General Public License for more details.
18 // You should have received a copy of the GNU General Public License
19 // along with this program; if not, write to the
20 // Free Software Foundation, Inc.,
21 // 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
24 \brief ICMPv6Packet non-inline non-template implementation */
26 #include "ICMPv6Packet.hh"
27 //#include "ICMPv6Packet.ih"
30 #include <boost/io/ios_state.hpp>
31 #include "../../Packets/DefaultBundle/IPv6Packet.hh"
32 #include "../../Utils/IpChecksum.hh"
35 ///////////////////////////////cc.p////////////////////////////////////////
38 senf::PacketRegistry<senf::IpTypes>::RegistrationProxy<senf::ICMPv6Packet>
39 registerICMPv6Packet (58);
42 prefix_ boost::uint16_t senf::ICMPv6PacketParser::calcChecksum()
46 senf::IpChecksum summer;
47 senf::IPv6Packet ipv6 (packet().rfind<senf::IPv6Packet>(senf::nothrow));
52 summer.feed( ipv6->source().i(),
53 ipv6->source().i() + senf::IPv6Packet::Parser::source_t::fixed_bytes );
54 // The destination used here must be the *final* destination ...
55 summer.feed( ipv6->destination().i(), ipv6->destination().i() + senf::IPv6PacketParser::destination_t::fixed_bytes );
57 // This is a simplification. The value is really 32bit to support UDP Jumbograms
58 // (RFC2147). However, skipping an even number of 0 bytes does not change the checksum
59 summer.feed( i() + ipv6->length(), i() + ipv6->length() + 2 );
60 // --> http://www.iana.org/assignments/protocol-numbers
61 // need to insert the correct protocol number here, NOT static 17!!
64 // since header are 16 / even 32bit aligned we don't have to care for padding. since IpChecksum
65 // cares for padding at the final summing we don't have to care is the payload is 16nbit-aligned, too.
66 summer.feed( i(), i()+checksum_offset );
67 summer.feed( i()+checksum_offset+2, data().end() );
69 boost::uint16_t rv (summer.sum());
70 return rv ? rv : 0xffffu;
73 prefix_ void senf::ICMPv6PacketType::dump(packet p, std::ostream &os)
75 boost::io::ios_all_saver ias(os);
76 os << "ICMPv6 protocol:\n"
77 << " type : " << p->type() <<"\n"
78 << " code : " << p->code() <<"\n"
79 << " checksum : " << p->checksum() << "\n";
82 ///////////////////////////////cc.e////////////////////////////////////////
89 // c-file-style: "senf"
90 // indent-tabs-mode: nil
91 // ispell-local-dictionary: "american"
92 // compile-command: "scons -u test"