Move sourcecode into 'senf/' directory

[senf.git] / senf / Packets / MPEGDVBBundle / GREPacket.hh

diff --git a/senf/Packets/MPEGDVBBundle/GREPacket.hh b/senf/Packets/MPEGDVBBundle/GREPacket.hh
new file mode 100644 (file)
index 0000000..32b8c11
--- /dev/null
+++ b/senf/Packets/MPEGDVBBundle/GREPacket.hh
@@ -0,0 +1,132 @@
+// $Id$
+//
+// Copyright (C) 2007
+// Fraunhofer Institute for Open Communication Systems (FOKUS)
+// Competence Center NETwork research (NET), St. Augustin, GERMANY
+//     Joachim Kaeber <jkaeber@berlios.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 "../DefaultBundle/EthernetPacket.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 GREChecksumParser : public PacketParserBase {
+#       include SENF_PARSER()        
+        SENF_PARSER_FIELD ( checksum1_, UInt16Parser );
+        SENF_PARSER_PRIVATE_FIELD ( reserved1_, UInt16Parser );
+        SENF_PARSER_FINALIZE(GREChecksumParser);
+    };
+
+    struct GREPacketParser : public PacketParserBase
+    {
+#       include SENF_PARSER()
+
+        SENF_PARSER_BITFIELD         ( checksum_present,  1, bool );
+        SENF_PARSER_PRIVATE_BITFIELD ( reserved0_,       12, unsigned ); // TODO: SKIP !!
+        SENF_PARSER_BITFIELD         ( version_number,    3, unsigned ); // TODO: Always Zero !!
+        SENF_PARSER_FIELD            ( protocol_type,    UInt16Parser );
+        SENF_PARSER_PRIVATE_VARIANT  ( checksum_,  checksum_present,
+                                                   (VoidPacketParser) (GREChecksumParser) );
+ 
+        SENF_PARSER_FINALIZE( GREPacketParser );
+
+      private: 
+        UInt16Parser checksum() const /// only defined if checksum_present() == \c true
+             { return checksum_().get<1>().checksum1_(); }
+    };
+    
+    /** \brief GRE packet
+        
+        \par Packet type (typedef):
+            \ref GREPacket
+
+        \par Fields:
+            \ref GREPacketParser
+            \image html GREPacket.png
+
+        \ingroup protocolbundle_mpegdvb
+     */
+    struct GREPacketType
+        : public PacketTypeBase,
+          public PacketTypeMixin<GREPacketType, EtherTypes>
+    {
+        typedef PacketTypeMixin<GREPacketType, EtherTypes> mixin;
+        typedef ConcretePacket<GREPacketType> packet;
+        typedef GREPacketParser parser;
+    
+        using mixin::nextPacketRange;
+        using mixin::nextPacketType;
+        using mixin::init;
+        using mixin::initSize;
+        
+        static void dump(packet p, std::ostream & os);
+        static EtherTypes::key_t nextPacketKey(packet p) {
+          return p->protocol_type();
+        }
+        static void finalize(packet p) {
+          p->protocol_type() << key(p.next(nothrow));
+          p->version_number() = 0; // as per RFC2784, 2.3.1
+
+          if (p->checksum_present()) { 
+            // compute checksum
+          } else {
+            // ???
+          }
+        }
+    };
+    
+    /** \brief GRE packet typedef */
+    typedef GREPacketType::packet GREPacket;
+    
+  
+}
+
+
+///////////////////////////////hh.e////////////////////////////////////////
+//#include "TransportPacket.cci"
+//#include "TransportPacket.ct"
+//#include "TransportPacket.cti"
+#endif
+
+\f
+// 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: