netdev - Re: occasionally corrupted network stats in /proc/net/dev

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <478BC081.70101@hp.com>
Date:	Mon, 14 Jan 2008 15:05:21 -0500
From:	Mark Seger <Mark.Seger@...com>
To:	Michael Chan <mchan@...adcom.com>
Cc:	Eric Dumazet <dada1@...mosbay.com>,
	Ben Greear <greearb@...delatech.com>,
	netdev <netdev@...r.kernel.org>
Subject: Re: occasionally corrupted network stats in /proc/net/dev

outstanding!  I'm just happy to hear it's not a bug in my monitoring 
code...  8-)
-mark

Michael Chan wrote:
> On Mon, 2008-01-14 at 20:12 +0100, Eric Dumazet wrote:
>   
>> Mark Seger a écrit :
>>     
>>> Ignore that last one as it was pointed out to me that we have both nic 
>>> installed on many of our systems and ethtool told me the one 
>>> associated with the nic is actually the broadcom one.
>>>
>>> version:        1.4.38 E1B1EC867DEEB8027B2DA0F
>>> license:        GPL
>>> description:    Broadcom NetXtreme II BCM5706/5708 Driver
>>>
>>>       
>> I remember some tg3 chips actually have bugs when reporting stats.... 
>> once in a while
>>
>> CCed to Michael Chan to get some details.
>>     
>
> Yes, that's right.  Some BNX2 chips have this problem and we have a
> workaround:
>
> http://git.kernel.org/?p=linux/kernel/git/davem/net-2.6.git;a=commit;h=02537b0676930b1bd9aff2139e0e645c79986931
>
> The chip sometimes DMA wrong counter values if the chip is also
> internally gathering the counters at the time of the DMA.
>
> Driver 1.5.11 and later versions have this workaround.
>
>
>   

--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html