Allow either old-style (pre-tvbuff) or new-style (tvbuffified)

dissectors to be registered as dissectors for particular ports,
registered as heuristic dissectors, and registered as dissectors for
conversations, and have routines to be used both by old-style and
new-style dissectors to call registered dissectors.

Have the code that calls those dissectors translate the arguments as
necessary.  (For conversation dissectors, replace
"find_conversation_dissector()", which just returns a pointer to the
dissector, with "old_try_conversation_dissector()" and
"try_conversation_dissector()", which actually call the dissector, so
that there's a single place at which we can do that translation.  Also
make "dissector_lookup()" static and, instead of calling it and, if it
returns a non-null pointer, calling that dissector, just use
"old_dissector_try_port()" or "dissector_try_port()", for the same
reason.)

This allows some dissectors that took old-style arguments and
immediately translated them to new-style arguments to just take
new-style arguments; make them do so.  It also allows some new-style
dissectors not to have to translate arguments before calling routines to
look up and call dissectors; make them not do so.

Get rid of checks for too-short frames in new-style dissectors - the
tvbuff code does those checks for you.

Give the routines to register old-style dissectors, and to call
dissectors from old-style dissectors, names beginning with "old_", with
the routines for new-style dissectors not having the "old_".  Update the
dissectors that use those routines appropriately.

Rename "dissect_data()" to "old_dissect_data()", and
"dissect_data_tvb()" to "dissect_data()".

svn path=/trunk/; revision=2218

1 files changed, 3 insertions, 3 deletions

diff --git a/packet-mpls.c b/packet-mpls.c
index 23c385241a..a895b6bc42 100644
--- a/packet-mpls.c
+++ b/packet-mpls.c
@@ -3,7 +3,7 @@
  * 
  * (c) Copyright Ashok Narayanan <ashokn@cisco.com>
  *
- * $Id: packet-mpls.c,v 1.7 2000/05/31 05:07:19 guy Exp $
+ * $Id: packet-mpls.c,v 1.8 2000/08/07 03:20:51 guy Exp $
  *
  * Ethereal - Network traffic analyzer
  * By Gerald Combs <gerald@zing.org>
@@ -145,7 +145,7 @@ dissect_mpls(const u_char *pd, int offset, frame_data *fd, proto_tree *tree)
     /* Start Decoding Here. */
     while (1) {
 	if (!BYTES_ARE_IN_FRAME(offset, 4)) {
-	    dissect_data(pd, offset, fd, tree);
+	    old_dissect_data(pd, offset, fd, tree);
 	    return;
 	}
 
@@ -193,5 +193,5 @@ proto_register_mpls(void)
 void
 proto_reg_handoff_mpls(void)
 {
-	dissector_add("ethertype", ETHERTYPE_MPLS, dissect_mpls);
+	old_dissector_add("ethertype", ETHERTYPE_MPLS, dissect_mpls);
 }