Add the "Edit:Protocols..." feature which currently only implements

the following:

It is now possible to enable/disable a particular protocol decoding
(i.e. the protocol dissector is void or not). When a protocol
is disabled, it is displayed as Data and of course, all linked
sub-protocols are disabled as well.

Disabling a protocol could be interesting:

- in case of buggy dissectors
- in case of wrong heuristics
- for performance reasons
- to decode the data as another protocol (TODO)

Currently (if I am not wrong), all dissectors but NFS can be disabled
(and dissectors that do not register protocols :-)

I do not like the way the RPC sub-dissectors are disabled (in the
sub-dissectors) since this could be done in the RPC dissector itself,
knowing the sub-protocol hfinfo entry (this is why, I've not modified
the NFS one yet).

Two functions are added in proto.c :

gboolean proto_is_protocol_enabled(int n);
void proto_set_decoding(int n, gboolean enabled);

and two MACROs which can be used in dissectors:

OLD_CHECK_DISPLAY_AS_DATA(index, pd, offset, fd, tree)
CHECK_DISPLAY_AS_DATA(index, tvb, pinfo, tree)

See also the XXX in proto_dlg.c and proto.c around the new functions.

svn path=/trunk/; revision=2267

1 files changed, 3 insertions, 1 deletions

diff --git a/packet-isis-hello.c b/packet-isis-hello.c
index a268f2db2c..25ad8d4107 100644
--- a/packet-isis-hello.c
+++ b/packet-isis-hello.c
@@ -1,7 +1,7 @@
 /* packet-isis-hello.c
  * Routines for decoding isis hello packets and their CLVs
  *
- * $Id: packet-isis-hello.c,v 1.9 2000/06/19 08:33:48 guy Exp $
+ * $Id: packet-isis-hello.c,v 1.10 2000/08/13 14:08:19 deniel Exp $
  * Stuart Stanley <stuarts@mxmail.net>
  *
  * Ethereal - Network traffic analyzer
@@ -427,6 +427,8 @@ isis_dissect_isis_hello(int hello_type, int header_length, int id_length,
 	int		hlen;
 	guint16		pdu_length;
 
+	OLD_CHECK_DISPLAY_AS_DATA(proto_isis_hello, pd, offset, fd, tree);
+
 	if (hello_type == ISIS_TYPE_PTP_HELLO) {
 		hlen = 1+id_length+2+2+1;
 	} else {