Wireshark-bugs: [Wireshark-bugs] [Bug 5830] New: 802.11 Tag WME Qos Info field is not decoded
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From: bugzilla-daemon@xxxxxxxxxxxxx
Date: Thu, 14 Apr 2011 08:23:42 -0700 (PDT)
https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=5830

           Summary: 802.11 Tag WME Qos Info field is not decoded
           Product: Wireshark
           Version: 1.5.x (Experimental)
          Platform: x86
        OS/Version: Windows XP
            Status: NEW
          Severity: Enhancement
          Priority: Low
         Component: Wireshark
        AssignedTo: wireshark-bugs@xxxxxxxxxxxxx
        ReportedBy: mark.phillips@xxxxxxx


Created an attachment (id=6168)
 --> (https://bugs.wireshark.org/bugzilla/attachment.cgi?id=6168)
Example 802.11 WMM PS QosInfo pcap file

Build Information:
wireshark 1.5.2-mp13b (SVN Rev 36641 from /trunk)

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
Apr

14 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 30729
--
The 802.11 wireless Vendor Specific Microsof/WME tag - type 2, subtype 0 (and
2, subtype 1), contain a Qos Info field as specified in the WMM PowerSave
standard.

Currently this field is not decoded, just displayed as a decimal number.

For example see frames 3, 19 and 21 in the attachment. Look under 802.11
Wireless LAN Management frame/Tagged Parameters/Tag:Vendor Specific: Microsof:
WME.

I have an enhancement which correctly decodes this field. The enhancement has
been tested under windows xp, Fedora 14 and Ubuntu builds.

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