netdev - Re: [PATCH] igb: Record hardware RX overruns in net

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Date:	Tue, 05 May 2009 11:58:19 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	jeffrey.t.kirsher@...el.com
Cc:	hawk@...x.dk, netdev@...r.kernel.org,
	e1000-devel@...ts.sourceforge.net, jesse.brandeburg@...el.com,
	bruce.w.allan@...el.com, peter.p.waskiewicz.jr@...el.com,
	john.ronciak@...el.com
Subject: Re: [PATCH] igb: Record hardware RX overruns in net_stats

From: Jeff Kirsher <jeffrey.t.kirsher@...el.com>
Date: Tue, 5 May 2009 11:47:09 -0700

> NAK.  RNBC is not a counter for buffer overruns, and so should not be
> counted as such.

I'd say technically it is, it indicates that more packets arrived than
the available receive buffers could handle.

If anything, this is the closest this device has for this kind of
situation, and it's useful for diagnosing problems.
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