Wireshark · Wireshark-bugs: [Wireshark-bugs] [Bug 6103] New: Add 3GPP TS44.060 RLC/MAC control blocks management in GSMTAP disse

[bugzilla-daemon@xxxxxxxxxxxxx]

https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=6103

           Summary: Add 3GPP TS44.060 RLC/MAC control blocks management in
                    GSMTAP dissector
           Product: Wireshark
           Version: 1.7.x (Experimental)
          Platform: x86
        OS/Version: Windows XP
            Status: NEW
          Severity: Enhancement
          Priority: Low
         Component: Wireshark
        AssignedTo: bugzilla-admin@xxxxxxxxxxxxx
        ReportedBy: lhaessler@xxxxxxxxxxxxxxxxxx


Build Information:
Version 1.7.0-TEST_BUILD_LHA-01 (SVN Rev Unknown from unknown)

Copyright 1998-2011 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+ 2.22.1, with GLib 2.26.1, with WinPcap (version
unknown), with libz 1.2.5, without POSIX capabilities, without libpcre, with
SMI
0.4.8, with c-ares 1.7.1, with Lua 5.1, without Python, with GnuTLS 2.10.3,
with
Gcrypt 1.4.6, with MIT Kerberos, with GeoIP, with PortAudio V19-devel (built
Jul
 7 2011), with AirPcap.

Running on Windows XP Service Pack 3, build 2600, with WinPcap version 4.1.2
(packet.dll version 4.1.0.2001), based on libpcap version 1.0 branch 1_0_rel0b
(20091008), GnuTLS 2.10.3, Gcrypt 1.4.6, without AirPcap.

Built using Microsoft Visual C++ 9.0 build 21022
--
GSMTAP pseudo-header currently only manage L2/L3 GSM signalling (for Um
interface).

This enhancement introduces the management of L2/L3 GPRS/EGPRS signalling over
Um interface. (i.e. RLC/MAC control blocks sent/received through PACCH logical
channel)

To describe an RLC/MAC control block in a capture file, GSMTAP pseudo-header
should contains:
- type field set to GSMTAP_TYPE_UM
- sub_type field set to GSMTAP_CHANNEL_PACCH
- flag GSMTAP_ARFCN_F_UPLINK of arfcn field, set or not, indicating which
dissector to call, i.e. either gsm_rlcmac_ul or gsm_rlcmac_dl

The attached capture file (gsm_gprs_log.pcap) shows an example of capture file
with GSMTAP PDUs containing both GSM and GPRS/EGPRS signalling.

Please also find attached the patch: gprs_for_gsmtap_dissector.patch

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