netdev - bonding inactive slaves vs rx

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Date:	Thu, 14 Feb 2013 16:06:57 -0500 (EST)
From:	David Miller <davem@...emloft.net>
To:	netdev@...r.kernel.org
CC:	eric.dumazet@...il.com, fubar@...ibm.com, andy@...yhouse.net
Subject: bonding inactive slaves vs rx_dropped

People are starting to notice that rx_dropped now increments on every
packet received on an bond's inactive slave.

I'm actually fine with rx_dropped incrementing in this situation.

The problem I want to address is that rx_dropped is encompassing
several unrelated situations and thus has become less useful for
diagnosis.

I think we should add some new RX stats such that we can get at
least a small amount of granularity for rx_dropped.

This way team, bond, etc. can increment a new netdev_stats->rx_foo in
this situation, and then someone doing diagnosis can see that
rx_dropped and rx_foo are incrementing at similar rates.
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