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Date:	Fri, 28 Aug 2009 12:24:59 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	cl@...ux-foundation.org
Cc:	sri@...ibm.com, dlstevens@...ibm.com, eric.dumazet@...il.com,
	netdev@...r.kernel.org, niv@...ux.vnet.ibm.com
Subject: Re: UDP multicast packet loss not reported if TX ring overrun?

From: Christoph Lameter <cl@...ux-foundation.org>
Date: Fri, 28 Aug 2009 09:53:40 -0400 (EDT)

> Seems though that the qdisc drop count does not flow into the tx_dropped
> counter for the interface.

And it should not.

The qdisc drops the packet due to flow control, not the hardware
device.

Device drops are for things like transmission errors on the wire.

If you start incrementing tx_dropped here, people won't be able
to tell they have a deteriorating cable or bad switch or similar.
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