netdev - Re: bne2 rx packet drop?

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Message-ID: <1280965623.7554.33.camel@HP1>
Date:	Wed, 4 Aug 2010 16:47:03 -0700
From:	"Michael Chan" <mchan@...adcom.com>
To:	"Rusty Russell" <rusty@...tcorp.com.au>
cc:	"netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: Re: bne2 rx packet drop?

On Wed, 2010-08-04 at 16:29 -0700, Rusty Russell wrote:
> Hi Michael (and netdev!)
> 
>    I've got a customer seeing ~1000 rx packets dropped per day (on a busy
> interface, bonding) via 'netstat -ni' RX-DRP's field across their 4-node
> cluster.  The code seems to put checksum_discard and mac_discard into
> that counter, so I'm not sure what the root cause is.
> 
> Any hints?  What are the conditions which cause mac_discard?
> 

Please ask the customer for ethtool -S ethx.  It has a number of
different counters for rx dropped packets so we can get a better idea of
what's happening.

Thanks.

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