First shot. Syntax Definition as per RFC2784.

Packets/MPEGDVBBundle/GREPacket.cc

+// $Id:DatagramSection.cc 327 2007-07-20 10:03:44Z tho $
+//
+// Copyright (C) 2007
+// Fraunhofer Institut fuer offene Kommunikationssysteme (FOKUS)
+// Kompetenzzentrum fuer Satelitenkommunikation (SatCom)
+//     Joachim Kaeber <joachim.kaeber@fokus.fraunhofer.de>
+//
+// 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
+// the Free Software Foundation; either version 2 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program; if not, write to the
+// Free Software Foundation, Inc.,
+// 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+
+/** \file
+    \brief GREPacket non-inline non-template implementation */
+
+#include "GREPacket.hh"
+//#include "GREPacket.ih"
+
+// Custom includes
+#include <iomanip>
+
+#define prefix_
+///////////////////////////////cc.p////////////////////////////////////////
+
+prefix_ void senf::GREPacketType::dump(packet p, std::ostream & os)
+{
+    /*
+    os << "GREPacket:\n"
+       << std::hex
+       << "  syncByte: 0x" << unsigned(p->sync_byte()) << "\n"
+       << "  transport_error_indicator: 0x" << unsigned(p->transport_error_indicator()) << "\n"
+       << "  payload_unit_start_indicator (pusi): 0x" << unsigned(p->pusi()) << "\n"
+       << "  transport_priority: 0x" << unsigned(p->transport_priority()) << "\n"
+       << std::dec
+       << "  pid: " << unsigned(p->pid()) << "\n"
+       << std::hex
+       << "  transport_scrambling_control: 0x" << unsigned(p->transport_scrmbl_ctrl()) << "\n"
+       << "  adaptation_field_control: 0x" << unsigned(p->adaptation_field_ctrl()) << "\n"
+       << "  continuity_counter: 0x" << unsigned(p->continuity_counter()) << "\n";
+    */
+}
+
+///////////////////////////////cc.e////////////////////////////////////////
+#undef prefix_
+
+
+// Local Variables:
+// mode: c++
+// fill-column: 100
+// c-file-style: "senf"
+// indent-tabs-mode: nil
+// ispell-local-dictionary: "american"
+// compile-command: "scons -u test"
+// comment-column: 40
+// End:

Packets/MPEGDVBBundle/GREPacket.hh

+// $Id:DatagramSection.hh 327 2007-07-20 10:03:44Z tho $
+//
+// Copyright (C) 2007
+// Fraunhofer Institut fuer offene Kommunikationssysteme (FOKUS)
+// Kompetenzzentrum fuer Satelitenkommunikation (SatCom)
+//     Joachim Kaeber <joachim.kaeber@fokus.fraunhofer.de>
+//
+// 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
+// the Free Software Foundation; either version 2 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program; if not, write to the
+// Free Software Foundation, Inc.,
+// 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+
+/** \file
+    \brief GREPacket public header */
+
+#ifndef HH_GREPacket
+#define HH_GREPacket 1
+
+// Custom includes
+#include <algorithm>
+#include "../../Packets/Packets.hh"
+
+//#include "GREPacket.mpp"
+///////////////////////////////hh.p////////////////////////////////////////
+
+namespace senf {
+
+    /** \brief Parse a GRE packet
+
+        Parser implementing the header of a General Routing Encapsulation (GRE, RFC 2784) Packet
+        
+        \see GREPacketType
+     */
+    struct Parse_GREPacket : public PacketParserBase
+    {
+        
+#include SENF_PARSER()
+        SENF_PARSER_BITFIELD         ( checksum_present,  1, bool );
+        SENF_PARSER_PRIVATE_BITFIELD ( reserved0_,       12, unsigned ); // TODO: SKIP !!
+        SENF_PARSER_BITFIELD_RO      ( version_number,    3, unsigned ); // TODO: Always Zero !!
+        SENF_PARSER_FIELD            ( protocol_type,    Parse_UInt16 );
+        SENF_PARSER_PRIVATE_VARIANT  ( checksum_,  checksum_present,
+                                                   (VoidPacketParser) (Parse_UInt16) );
+        SENF_PARSER_PRIVATE_VARIANT  ( reserved1_, checksum_present,
+                                                   (VoidPacketParser) (Parse_UInt16) );
+        SENF_PARSER_FINALIZE( Parse_GREPacket );
+
+      private: 
+        Parse_UInt16 checksum() const /// only defined if checksum_present() == \c true
+             { return checksum_().get<1>(); }
+    };
+    
+    /** \brief GRE packet
+        
+        \par Packet type (typedef):
+            \ref GREPacket
+
+        \par Fields:
+            \ref Parse_GREPacket
+
+        \ingroup protocolbundle_mpegdvb
+     */
+    struct GREPacketType
+        : public PacketTypeBase,
+          public PacketTypeMixin<GREPacketType>
+    {
+        typedef PacketTypeMixin<GREPacketType> mixin;
+        typedef ConcretePacket<GREPacketType> packet;
+        typedef Parse_GREPacket parser;
+    
+        using mixin::nextPacketRange;
+        using mixin::init;
+        using mixin::initSize;
+        
+        static void dump(packet p, std::ostream & os);
+    };
+    
+    /** \brief GRE packet typedef */
+    typedef GREPacketType::packet GREPacket;
+    
+  
+}
+
+
+///////////////////////////////hh.e////////////////////////////////////////
+//#include "TransportPacket.cci"
+//#include "TransportPacket.ct"
+//#include "TransportPacket.cti"
+#endif
+
+
+// Local Variables:
+// mode: c++
+// fill-column: 100
+// c-file-style: "senf"
+// indent-tabs-mode: nil
+// ispell-local-dictionary: "american"
+// compile-command: "scons -u test"
+// comment-column: 40
+// End: