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Re: [PATCH] net: add ability to clear stats via ethtool - e1000/pcnet32

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From: Alan Cox <alan@...>
To: James Cammarata <jimi@...>
Cc: Bill Fink <billfink@...>, <linux-kernel@...>, Linux Netdev List <netdev@...>
Subject: Re: [PATCH] net: add ability to clear stats via ethtool - e1000/pcnet32
Date: Tuesday, June 3, 2008 - 10:46 am

> Also, I'd like to point out that the "stepping on other peoples toes" 

I used to work in a large ISP - it was a huge concern then and was
enforced and managed by the less effective 'do you like your kneecaps'
approach to permissions.

Its basically impossible to write a correct non-racy application which
zeros kernel statistics and then measures the change, because you cannot
know another application did the same while you were running.

This is the most basic and blindingly obvious stuff. You should not be
able to zero the kernel stats just because you can't work perl.

Alan
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Messages in current thread:
[PATCH updated] net: add ability to clear per-interface netw..., James Cammarata, (Fri May 16, 11:18 am)
Re: [PATCH updated] net: add ability to clear per-interface ..., David Miller, (Fri May 16, 4:00 pm)
Re: [PATCH updated] net: add ability to clear per-interface ..., Rick Jones, (Fri May 16, 4:09 pm)
Re: [PATCH updated] net: add ability to clear per-interface ..., James Cammarata, (Sat May 17, 11:06 am)
Re: [PATCH updated] net: add ability to clear per-interface ..., Eric Dumazet, (Fri May 16, 12:20 pm)
Re: [PATCH updated] net: add ability to clear per-interface ..., James Cammarata, (Sat May 17, 10:54 am)
Re: [PATCH updated] net: add ability to clear per-interface ..., Eric Dumazet, (Sat May 17, 5:41 pm)
Re: [PATCH updated] net: add ability to clear per-interface ..., James Cammarata, (Sat May 17, 6:49 pm)
Re: [PATCH updated] net: add ability to clear per-interface ..., Ben Hutchings, (Sat May 17, 8:31 pm)
Re: [PATCH updated] net: add ability to clear per-interface ..., James Cammarata, (Sun May 18, 1:09 am)
[PATCH] net: add ability to clear stats via ethtool - e1000/..., James Cammarata, (Wed May 28, 9:45 pm)
Re: [PATCH] net: add ability to clear stats via ethtool - e1..., Andrew Morton, (Thu May 29, 1:11 am)
Re: [PATCH] net: add ability to clear stats via ethtool - e1..., James Cammarata, (Thu May 29, 8:34 am)
Re: [PATCH] net: add ability to clear stats via ethtool - e1..., Alan Cox, (Thu May 29, 10:45 am)
Re: [PATCH] net: add ability to clear stats via ethtool - e1..., Bill Fink, (Fri May 30, 3:12 pm)
Re: [PATCH] net: add ability to clear stats via ethtool - e1..., Alan Cox, (Sat May 31, 8:11 am)
Re: [PATCH] net: add ability to clear stats via ethtool - e1..., Bill Fink, (Sat May 31, 7:57 pm)
Re: [PATCH] net: add ability to clear stats via ethtool - e1..., Glen Turner, (Mon Jun 2, 12:50 am)
Re: [PATCH] net: add ability to clear stats via ethtool - e1..., Bill Fink, (Mon Jun 2, 12:10 pm)
Re: [PATCH] net: add ability to clear stats via ethtool - e1..., James Cammarata, (Tue Jun 3, 8:28 am)
Re: [PATCH] net: add ability to clear stats via ethtool - e1..., Alan Cox, (Tue Jun 3, 10:46 am)
Re: [PATCH] net: add ability to clear stats via ethtool - e1..., James Cammarata, (Tue Jun 3, 11:05 pm)
Re: [PATCH] net: add ability to clear stats via ethtool - e1..., Ben Hutchings, (Tue Jun 3, 8:35 am)
Re: [PATCH] net: add ability to clear stats via ethtool - e1..., Ben Hutchings, (Sat May 31, 9:46 pm)
Re: [PATCH] net: add ability to clear stats via ethtool - e1..., Bill Fink, (Sun Jun 1, 4:46 pm)
Re: [PATCH] net: add ability to clear stats via ethtool - e1..., David Miller, (Mon Jun 2, 1:39 am)
Re: [PATCH] net: add ability to clear stats via ethtool - e1..., Bill Fink, (Mon Jun 2, 11:41 am)
Re: [PATCH] net: add ability to clear stats via ethtool - e1..., Ben Hutchings, (Sun Jun 1, 6:29 pm)
Re: [PATCH] net: add ability to clear stats via ethtool - e1..., Bill Fink, (Sun Jun 1, 11:55 pm)
Re: [PATCH] net: add ability to clear stats via ethtool - e1..., Rick Jones, (Fri May 30, 6:14 pm)
Re: [PATCH] net: add ability to clear stats via ethtool - e1..., Bill Fink, (Fri May 30, 9:09 pm)
Re: [PATCH] net: add ability to clear stats via ethtool - e1..., Stephen Hemminger, (Fri May 30, 10:41 pm)
Re: [PATCH] net: add ability to clear stats via ethtool - e1..., Bill Fink, (Sat May 31, 12:47 am)
Re: [PATCH] net: add ability to clear stats via ethtool - e1..., James Cammarata, (Thu May 29, 1:15 pm)
Re: [PATCH] net: add ability to clear stats via ethtool - e1..., David Miller, (Thu May 29, 4:50 pm)
Re: [PATCH] net: add ability to clear stats via ethtool - e1..., James Cammarata, (Thu May 29, 5:18 pm)
Re: [PATCH] net: add ability to clear stats via ethtool - e1..., Chris Friesen, (Thu May 29, 10:48 am)
Re: [PATCH] net: add ability to clear stats via ethtool - e1..., James Cammarata, (Wed May 28, 10:08 pm)
Re: [PATCH updated] net: add ability to clear per-interface ..., Ben Hutchings, (Sun May 18, 7:27 am)
Re: [PATCH updated] net: add ability to clear per-interface ..., Patrick McHardy, (Sat May 17, 9:43 pm)
Re: [PATCH updated] net: add ability to clear per-interface ..., David Miller, (Fri May 16, 4:03 pm)