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-ipv6.c b/packet-ipv6.c
index 27b20eb2dc..76198a202a 100644
--- a/packet-ipv6.c
+++ b/packet-ipv6.c
@@ -1,7 +1,7 @@
 /* packet-ipv6.c
  * Routines for IPv6 packet disassembly 
  *
- * $Id: packet-ipv6.c,v 1.42 2000/08/11 22:18:13 deniel Exp $
+ * $Id: packet-ipv6.c,v 1.43 2000/08/13 14:08:06 deniel Exp $
  *
  * Ethereal - Network traffic analyzer
  * By Gerald Combs <gerald@zing.org>
@@ -295,6 +295,8 @@ dissect_ipv6(const u_char *pd, int offset, frame_data *fd, proto_tree *tree) {
 
   struct ip6_hdr ipv6;
 
+  OLD_CHECK_DISPLAY_AS_DATA(proto_ipv6, pd, offset, fd, tree);
+
   memcpy(&ipv6, (void *) &pd[offset], sizeof(ipv6)); 
 
   pi.ipproto = ipv6.ip6_nxt; /* XXX make work TCP follow (ipproto = 6) */