https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=14593
Bug ID: 14593
Summary: Tag: Power Capability Min: 249, Max :19 valuable
interpreted incorrectly
Product: Wireshark
Version: 2.4.6
Hardware: x86
OS: Mac OS X 10.4
Status: UNCONFIRMED
Severity: Minor
Priority: Low
Component: Dissection engine (libwireshark)
Assignee: bugzilla-ad...@wireshark.org
Reporter: ed...@communicaone.com
Target Milestone: ---
Created attachment 16254
--> https://bugs.wireshark.org/bugzilla/attachment.cgi?id=16254&action=edit
Image of values shown in Wireshark
Build Information:
Version 2.4.6 (v2.4.6-0-ge2f395a)
Copyright 1998-2018 Gerald Combs <ger...@wireshark.org> and contributors.
License GPLv2+: GNU GPL version 2 or later
<http://www.gnu.org/licenses/old-licenses/gpl-2.0.html>
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 (64-bit) with Qt 5.3.2, with libpcap, without POSIX capabilities, with
GLib 2.36.0, with zlib 1.2.5, with SMI 0.4.8, with c-ares 1.12.0, with Lua
5.2.4, with GnuTLS 3.4.17, with Gcrypt 1.7.7, with MIT Kerberos, with GeoIP,
with nghttp2 1.14.0, with LZ4, with Snappy, with libxml2 2.9.4, with
QtMultimedia, without AirPcap, with SBC, with SpanDSP.
Running on Mac OS X 10.13.4, build 17E199 (Darwin 17.5.0), with Intel(R)
Core(TM) i7-4770HQ CPU @ 2.20GHz (with SSE4.2), with 16384 MB of physical
memory, with locale C, with libpcap version 1.8.1 -- Apple version 79.20.1,
with
GnuTLS 3.4.17, with Gcrypt 1.7.7, with zlib 1.2.11.
Built using llvm-gcc 4.2.1 (Based on Apple Inc. build 5658) (LLVM build
2336.9.00).
Wireshark is Open Source Software released under the GNU General Public
License.
Check the man page and http://www.wireshark.org for more information.
--
Under "IEEE 802.11 wireless LAN:
Tag: Power Capability Min: 249, Max :19
The Min value is not been calculated properly. in this case "Min: 249" should
be -7.
As per a very helpful response on the Wireshark forums:
"Power Capability element from IEEE 802.11-2016 9.4.2.15 'Power Capability
element', then the minimum and maximum transmit power are signed 8-bit integers
"in units of decibels relative to 1 mW", i.e. they're signed dBm. 249 is 0xF9
which, if it were correctly interpreted as a signed 8-bit value, would be -7
dBm."
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