I'm not sold on the name or module the proto_data functions live in, but I believe the function arguments are solid and gives us the most flexibility for the future. And search/replace of a function name is easy enough to do.
The big driving force for getting this in sooner rather than later is the saved memory on ethernet packets (and IP packets soon), that used to have file_scope() proto data when all it needed was packet_scope() data (technically packet_info->pool scoped), strictly for Decode As.
All dissectors that use p_add_proto_data() only for Decode As functionality have been converted to using packet_scope(). All other dissectors were converted to using file_scope() which was the original scope for "proto" data.
svn path=/trunk/; revision=53520
The basic idea behind this design is to have dissectors register with a "decode as list" with their name and dissector table. When "Decode As" dialog is launched, any "registered" dissector found in the packet will cause a tab to be created in the dialog.
This patch includes just the dissector portion of the functionality (minus packet-dcerpc.[ch] because it has hooks to the current GUI)
svn path=/trunk/; revision=53445
The main driving force for this was my new Decode As functionality (https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=9450) that wants a dissector/subdissector table relationship for all dissectors wanting to use Decode As functionality. The ethertype() function provides the value to the "ethertype" subdissector table, so I think it should be matched to a dissector. Only odd side effect is the display filter of "ethertype" returns no packets because there is no "item" associated with the dissector.
svn path=/trunk/; revision=53443
Add support for the Cisco MetaData (0x8909) ethertype.
From me:
Don't try to register the "eth.type" abbreviation; use "cmd.type" instead.
Add SVN id.
Clean up trailing white space and fix up some indentation.
Don't declare a variable static that need not be.
svn path=/trunk/; revision=51198
was done using textual search+replace, not anything syntax-aware, so presumably
it got most comments as well (except where there were typos).
Use a consistent coding style, and make proper use of the WS_DLL_* defines.
Group the functions appropriately in the header.
I ended up getting rid of most of the explanatory comments since many of them
duplicated what was in the value_string.c file (and were out of sync with the
recent updates I made to those in r48633). Presumably most of the comments
should be in the .h file not the .c file, but there's enough churn ahead that
it's not worth fixing yet.
Part of https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=8467
svn path=/trunk/; revision=48634
epan/show_exception.c, as it's used outside
epan/dissectors/packet-frame.c. Update their callers to include
<epan/show_exception.h> to get their declaration.
Add a CATCH_NONFATAL_ERRORS macro that catches all exceptions that, if
there's more stuff in the packet to dissect after the dissector call
that threw the exception, doesn't mean you shouldn't go ahead and
dissect that stuff. Use it in all those cases, including ones where
BoundsError was inappropriately being caught (you want those passed up
to the top level, so that the packet is reported as having been cut
short in the capture process).
Add a CATCH_BOUNDS_ERRORS macro that catches all exceptions that
correspond to running past the end of the data for a tvbuff; use it
rather than explicitly catching those exceptions individually, and
rather than just catching all exceptions (the only place that
DissectorError should be caught, for example, is at the top level, so
dissector bugs show up in the protocol tree).
Don't catch and then immediately rethrow exceptions without doing
anything else; just let the exceptions go up to the final catcher.
Use show_exception() to report non-fatal errors, rather than doing it
yourself.
If a dissector is called from Lua, catch all non-fatal errors and use
show_exception() to report them rather than catching only
ReportedBoundsError and adding a proto_malformed item.
Don't catch exceptions when constructing a trailer tvbuff in
packet-ieee8023.c - just construct it after the payload has been
dissected, and let whatever exceptions that throws be handled at the top
level.
Avoid some TRY/CATCH/ENDTRY cases by using checks such as
tvb_bytes_exist() before even looking in the tvbuff.
svn path=/trunk/; revision=47924
Dissector for HSR and PRP-1
Here is a patch that adds a dissector for HSR and for PRP-1. Both protocols are defined in IEC62439 Part 3. (High-availability Seamless Redundancy / Parallel Redundancy Protocol)
The existing PRP dissector has been refactored to support both the old PRP (now called PRP-0) and the new PRP-1.
There are three distinct dissectors:
- HSR (ethertype 892F)
- HSR/PRP supervision (ethertype 88FB)
- PRP-0 and PRP-1 (trailer dissector; disabled by default)
From me :
* Fix Clang Warning
* Add modification for CMakeLists.txt
svn path=/trunk/; revision=39692
keys to have _uint in their names, to match the routines that handle
dissector tables with string keys. (Using _port can confuse people into
thinking they're intended solely for use with TCP/UDP/etc. ports when,
in fact, they work better for things such as Ethernet types, where the
binding of particular values to particular protocols are a lot
stronger.)
svn path=/trunk/; revision=35224
Add support for dissecting TDLS (IEEE 802.11z) frames.
These are mostly used as Action frames that are encapsulated in Data frames (to go through any AP).
https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=5493
svn path=/trunk/; revision=35208
draft-ietf-isis-ext-eth specifies an extension to current Ethernet Frame
specifications for hardware and frame format to support payloads greater than
1500 Bytes for Type interpretation and Length interpretation frames.
The extension introduced by draft-ietf-isis-ext-eth is currently used by Cisco
Systems' IS-IS routing protocol implementation when running IS-IS over Ethernet
links with large MTU.
svn path=/trunk/; revision=34748
This is necessary in case a subdissector had changed it but was unable to
restore it (due to the exception).
Remove check_col().
svn path=/trunk/; revision=34436
From me: A few minor changes:
- col-clear() not req'd;
- Use 'gint32 length' rather than 'guint8 length';
- Use ENC_NA instead of FALSE/TRUE in two cases;
- Move global tdmoe_handle to be local to proto_reg_handoff...
svn path=/trunk/; revision=33307
This is a patch for a new dissector that decodes Nokia Siemens Networks'
proprietary Flow Layer Internal Protocol (Ethertype 0x8901).
svn path=/trunk/; revision=31069
This contains the source for dissecting TTEthernet packets (including Protocol Control Frames) conforming to our TTEthernet specification as dissector for Wireshark.
svn path=/trunk/; revision=26955
