Change the sub-dissector handoff registration routines so that the

sub-dissector table is not stored in the header_field_info struct, but
in a separate namespace. Dissector tables are now registered by name
and not by field ID. For example:

        udp_dissector_table = register_dissector_table("udp.port");

Because of this different namespace, dissector tables can have names
that are not field names.  This is useful for ethertype, since multiple
fields are "ethertypes".

packet-ethertype.c replaces ethertype.c (the name was changed so that it
would be named in the same fashion as all the filenames passed to make-reg-dotc)

Although it registers no protocol or field, it registers one dissector table:

	ethertype_dissector_table = register_dissector_table("ethertype");

All protocols that can be called because of an ethertype field now register
that fact with dissector_add() calls.

In this way, one dissector_table services all ethertype fields
(hf_eth_type, hf_llc_type, hf_null_etype, hf_vlan_etype)

Furthermore, the code allows for names of protocols to exist in the
etype_vals, yet a dissector for that protocol doesn't exist. The name
of the dissector is printed in COL_INFO. You're welcome, Richard. :-)

svn path=/trunk/; revision=1848

1 files changed, 3 insertions, 1 deletions

diff --git a/packet-snmp.c b/packet-snmp.c
index c816e3426b..b72e42426e 100644
--- a/packet-snmp.c
+++ b/packet-snmp.c
@@ -2,7 +2,7 @@
  * Routines for SNMP (simple network management protocol)
  * D.Jorand (c) 1998
  *
- * $Id: packet-snmp.c,v 1.27 2000/04/08 07:07:36 guy Exp $
+ * $Id: packet-snmp.c,v 1.28 2000/04/13 18:18:48 gram Exp $
  *
  * Ethereal - Network traffic analyzer
  * By Gerald Combs <gerald@zing.org>
@@ -50,6 +50,7 @@
 #include <glib.h>
 
 #include "packet.h"
+#include "etypes.h"
 
 #if defined(HAVE_UCD_SNMP_SNMP_H) || defined(HAVE_SNMP_SNMP_H)
  /*
@@ -1185,4 +1186,5 @@ proto_reg_handoff_snmp(void)
 {
 	dissector_add("udp.port", UDP_PORT_SNMP, dissect_snmp);
 	dissector_add("udp.port", UDP_PORT_SNMP_TRAP, dissect_snmp);
+	dissector_add("ethertype", ETHERTYPE_SNMP, dissect_snmp);
 }