Guy,
As per my bug 4968, whatever is the easiest way to display this as decimal
in a column would be fine.
Keith.
--------------------------------------------------
From: "Guy Harris" <guy@xxxxxxxxxxxx>
Sent: Friday, July 02, 2010 8:11 PM
To: "Community support list for Wireshark" <wireshark-users@xxxxxxxxxxxxx>
Cc: "Alec Campbell" <alex.campbell@xxxxxx>; "Davie Forbes"
<david.forbes@xxxxxx>
Subject: Re: [Wireshark-users] Adding DSCP column in Wireshark 1.4.0rc1
On Jul 1, 2010, at 8:24 AM, Keith French wrote:
It is only the DSCP filter that causes this problem, not the one for
802.1P
COS. When set to be unresolved in the Column context menu, the COS value
shown for each packet is in decimal. The only problem then is that the
DSCP
column unresolved shows a packet's value in hex, not decimal.
In V1.2.x where the filter used to be:-
ip.dscp.value
In no version of Ethereal/Wireshark that we ever shipped was there a field
named "ip.dscp.value"; the field for the Differentiated Services Code
Point has always been named "ip.dsfield.dscp", dating back to January
2000. (I tried it with a 1.2.x release; it did *not* allow filtering on
"ip.dscp.value", and *did* allow filtering on "ip.dsfield.dscp".)
The change that caused the problem was not a change to the field for the
DSCP; the change was, as noted by Jaap Keuter, that 1.2.x had several
column types that were removed in 1.3.x/1.4.x in favor of using the new
"custom columns" feature:
1.2.x was a bit different. There you had a program defined column type
DSCP,
which was filled in by the dissector with the unresolved value of the
field.
The new development and 1.4 branch code tries to convert these program
defined
column types into custom columns in order to reduce the number of program
defined columns.
so it's not that the field name changed - it didn't - it's that the way
the column is generated changed.
It would be very useful if there was
a way to display the entries for packets in decimal.
I suspect the code point is displayed in hex because it's specified in
binary - see, for example:
http://www.iana.org/assignments/dscp-registry/dscp-registry.xml
However, if people are used to seeing it in decimal, the ip.dsfield.dscp
field could be changed to be displayed either in decimal or in decimal and
hex, which would affect both the display in the packet detail field and
the display when the field is used as a custom column.
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