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Wireshark-bugs: [Wireshark-bugs] [Bug 7490] New: SDH reassembly.

Date: Tue, 17 Jul 2012 01:44:17 -0700 (PDT)
https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=7490

           Summary: SDH reassembly.
           Product: Wireshark
           Version: SVN
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: Enhancement
          Priority: Low
         Component: Dissection engine (libwireshark)
        AssignedTo: bugzilla-admin@xxxxxxxxxxxxx
        ReportedBy: andrew.kampjes@xxxxxxxxxx


Created attachment 8787
  --> https://bugs.wireshark.org/bugzilla/attachment.cgi?id=8787
patch

Build Information:
wireshark 1.9.0 (SVN Rev 43735 from /trunk)

Copyright 1998-2012 Gerald Combs <gerald@xxxxxxxxxxxxx> and contributors.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

Compiled (32-bit) with GTK+ 2.24.4, with Cairo 1.10.2, with Pango 1.28.4, with
GLib 2.28.6, with libpcap, with libz 1.2.3.4, without POSIX capabilities,
without libnl, without SMI, without c-ares, without ADNS, without Lua, without
Python, without GnuTLS, without Gcrypt, without Kerberos, without GeoIP,
without
PortAudio, with AirPcap.

Running on Linux 2.6.38-13-generic-pae, with locale en_NZ.UTF-8, with libpcap
version 1.1.1, with libz 1.2.3.4, without AirPcap.

Built using gcc 4.5.2.

--
See https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=7314 for test files and
http://www.cisco.com/en/US/tech/tk482/tk876/technologies_tech_note09186a008011927d.shtml
for the best short SDH spec I've found.

I'm not 100% sure about the reassembly done here, I may have done it completely
the wrong way but the problem is that the SDH reassembly isn't joining two
linear packets but rather short sections of packets, while stripping out the
headers (in column rather than row format). This will use approximately twice
the packet memory of the previous version (when doing reassembly).

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