netdev - Re: Question about tg3 and bnx2 driver suppliers

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Date:	Thu, 17 Feb 2011 15:17:35 +0100
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Michael Durket <durket@...hwire.stanford.edu>
Cc:	netdev@...r.kernel.org
Subject: Re: Question about tg3 and bnx2 driver suppliers

Le jeudi 17 février 2011 à 05:24 -0800, Michael Durket a écrit :
> I'm trying to fix a problem with packet drops and frame errors (really
> rxbds_empty and rx_discards (or rx_fw_discards depending on whether or
> not its a tg3 supported chip or a bnx2 chip)). We have this happening
> on pretty much all the RedHat 5.x systems we're running these drivers
> on. In investigating what remedies to employ to fix this, I'm trying
> to determine if new versions of this driver are supplied by Broadcom,
> or by people within the Linux community so 
> I can find the right place to ask questions about it. I'm pretty sure
> this isn't the right list for these types of questions, but if someone
> could tell me whether I should be contacting Broadcom directly, or the
> name of some other Linux mailing list or forum that might help, I'd
> appreciate it.
> 

It _is_ the right place, dont worry ;)

One possible cause of packet drops is when softirqs are disabled for too
long periods, even if NIC has a big RX ring (check ethtool -g eth0)

We fixed one big offender some weeks ago : iptables -L

Fix is in commit 83723d60717f8da0f53f

http://git2.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=83723d60717f8da0f53f91cf42a845ed56c09662



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