first prototype for the new Ethernet LLC/SNAP Packet

[senf.git] / Packets / DefaultBundle / EthernetPacket.hh

diff --git a/Packets/DefaultBundle/EthernetPacket.hh b/Packets/DefaultBundle/EthernetPacket.hh
index 359f05d..3dcddc6 100644 (file)
--- a/Packets/DefaultBundle/EthernetPacket.hh
+++ b/Packets/DefaultBundle/EthernetPacket.hh
@@ -68,24 +68,13 @@ namespace senf {
      */
     struct Parse_Ethernet : public PacketParserBase
     {
-        typedef Parse_UInt16                      Parse_Type;
+#       include SENF_FIXED_PARSER()
 
-#       ifndef DOXYGEN
+        SENF_PARSER_FIELD( destination, Parse_MAC    );
+        SENF_PARSER_FIELD( source,      Parse_MAC    );
+        SENF_PARSER_FIELD( type_length, Parse_UInt16 );
 
-        SENF_PACKET_PARSER_INIT(Parse_Ethernet);
-
-        SENF_PACKET_PARSER_DEFINE_FIXED_FIELDS(
-            ((Field)( destination, Parse_MAC  ))
-            ((Field)( source,      Parse_MAC  ))
-            ((Field)( type,        Parse_Type )) );
-
-#       else
-
-        Parse_MAC destination();
-        Parse_MAC source();
-        Parse_Type type();
-
-#       endif
+        SENF_PARSER_FINALIZE(Parse_Ethernet);
     };
 
     /** \brief EtherType registry
@@ -111,32 +100,32 @@ namespace senf {
         \par Associated registries:
             \ref EtherTypes
 
+        \par Finalize action:
+            Set \a type from type of next packet if found in \ref EtherTypes
+
         \ingroup protocolbundle_default
      */
     struct EthernetPacketType
         : public PacketTypeBase,
           public PacketTypeMixin<EthernetPacketType, EtherTypes>
     {
+#ifndef DOXYGEN
         typedef PacketTypeMixin<EthernetPacketType, EtherTypes> mixin;
         typedef ConcretePacket<EthernetPacketType> packet;
         typedef Parse_Ethernet parser;
-
+#endif
         using mixin::nextPacketRange;
-        using mixin::nextPacketType;
+  //      using mixin::nextPacketType;
         using mixin::initSize;
         using mixin::init;
 
-        /** \todo Add LLC/SNAP support -> only use the registry
-            for type() values >=1536, otherwise expect an LLC header */
-        static registry_key_t nextPacketKey(packet p) 
-            { return p->type(); }
-
+        static factory_t nextPacketType(packet p);
         static void dump(packet p, std::ostream & os);
         static void finalize(packet p);
     };
 
     /** \brief Ethernet packet typedef */
-    typedef EthernetPacketType::packet EthernetPacket;
+    typedef ConcretePacket<EthernetPacketType> EthernetPacket;
 
     /** \brief Parse an ethernet VLAN tag
         
@@ -146,29 +135,15 @@ namespace senf {
      */
     struct Parse_EthVLan : public PacketParserBase
     {
-        typedef Parse_UIntField < 0,  3 > Parse_Priority;
-        typedef Parse_Flag          < 3 > Parse_CFI;
-        typedef Parse_UIntField < 4, 16 > Parse_VLanId;
-        typedef Parse_UInt16              Parse_Type;
-
-#       ifndef DOXYGEN
-
-        SENF_PACKET_PARSER_INIT(Parse_EthVLan);
+#       include SENF_FIXED_PARSER()
 
-        SENF_PACKET_PARSER_DEFINE_FIXED_FIELDS(
-            ((OverlayField)( priority, Parse_Priority ))
-            ((OverlayField)( cfi,      Parse_CFI      ))
-            ((Field       )( vlanId,   Parse_VLanId   ))
-            ((Field       )( type,     Parse_Type     )) );
+        SENF_PARSER_BITFIELD( priority,  3, unsigned );
+        SENF_PARSER_BITFIELD( cfi,       1, bool     );
+        SENF_PARSER_BITFIELD( vlanId,   12, unsigned );
 
-#       else
+        SENF_PARSER_FIELD( type, Parse_UInt16 );
 
-        Parse_Priority priority();
-        Parse_CFI cfi();
-        Parse_VLanId vlanId();
-        Parse_Type type();
-
-#       endif
+        SENF_PARSER_FINALIZE(Parse_EthVLan);
     };
 
     /** \brief Ethernet VLAN tag
@@ -182,16 +157,20 @@ namespace senf {
         \par Associated registries:
             \ref EtherTypes
 
+        \par Finalize action:
+            Set \a type from type of next packet if found in \ref EtherTypes
+
         \ingroup protocolbundle_default
      */
     struct EthVLanPacketType
         : public PacketTypeBase, 
           public PacketTypeMixin<EthVLanPacketType, EtherTypes>
     {
+#ifndef DOXYGEN
         typedef PacketTypeMixin<EthVLanPacketType, EtherTypes> mixin;
         typedef ConcretePacket<EthVLanPacketType> packet;
         typedef Parse_EthVLan parser;
-
+#endif
         using mixin::nextPacketRange;
         using mixin::nextPacketType;
         using mixin::initSize;
@@ -207,7 +186,70 @@ namespace senf {
     };
 
     /** \brief Ethernet VLAN tag typedef */
-    typedef EthVLanPacketType::packet EthVLanPacket;
+    typedef ConcretePacket<EthVLanPacketType> EthVLanPacket;
+
+
+    /** \brief Parse an ethernet LLC/SNAP header
+        
+        \todo document me
+
+        \see EthVLanPacketType
+     */
+    struct Parse_EthLlcSnapPacket : public PacketParserBase
+    {
+#       include SENF_FIXED_PARSER()
+
+        SENF_PARSER_FIELD( dsap, Parse_UInt8 );
+        SENF_PARSER_FIELD( ssap, Parse_UInt8 );
+        SENF_PARSER_FIELD( ctrl, Parse_UInt8 );
+
+        SENF_PARSER_FIELD( protocolId, Parse_UInt24 );
+        SENF_PARSER_FIELD( type, Parse_UInt24 );
+
+        SENF_PARSER_FINALIZE(Parse_EthLlcSnapPacket);
+    };
+
+    /** \brief Ethernet LLC/SNAP header
+
+        \todo document me
+
+        \par Packet type (typedef):
+            \ref EthLlcSnapPacketType
+
+        \par Fields:
+            \ref Parse_EthLlcSnapPacket
+
+        \par Associated registries:
+            \ref EtherTypes
+
+        \par Finalize action:
+            XXXX
+
+        \ingroup protocolbundle_default
+     */
+    struct EthLlcSnapPacketType
+        : public PacketTypeBase, 
+          public PacketTypeMixin<EthLlcSnapPacketType, EtherTypes>
+    {
+#ifndef DOXYGEN
+        typedef PacketTypeMixin<EthLlcSnapPacketType, EtherTypes> mixin;
+        typedef ConcretePacket<EthLlcSnapPacketType> packet;
+        typedef Parse_EthLlcSnapPacket parser;
+#endif
+        using mixin::nextPacketRange;
+        using mixin::nextPacketType;
+        using mixin::initSize;
+        using mixin::init;
+                
+        static registry_key_t nextPacketKey(packet p) 
+            { return p->type(); }
+
+        static void dump(packet p, std::ostream & os);
+        static void finalize(packet p);
+    };
+
+    /** \brief Ethernet VLAN tag typedef */
+    typedef ConcretePacket<EthLlcSnapPacketType> EthLlcSnapPacket;
 }