From mboxrd@z Thu Jan  1 00:00:00 1970
From: Remy Horton <remy.horton@intel.com>
Subject: Re: ethtool doesnt work on some interface after
 unbinding dpdk
Date: Thu, 14 Apr 2016 08:15:15 +0100
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To: Gopakumar Choorakkot Edakkunni <gopakumar.c.e@gmail.com>,
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Morning,

On 13/04/2016 15:48, Gopakumar Choorakkot Edakkunni wrote:
[..]
> then after a while I
> unbind from igb_uio and bind them back to igb/ixgbe. At this point, one of
> the 4 igb ports (random) stops responding to ethtool, ethtool bails out
> with some error. But otherwise the interface seems to work fine, it has a
> linux interface created and pops up in /sys/class/net etc.. Has anyone seen
> this before ? I thought of checking before starting to debug this further

Can you give details of the error? If you were you unbinding from 
igb_uio while examples/ethtool was still running it likley caused 
something to trip up, as at least DPDK ethtool itself was not made with 
run-time unbinding in mind.

Regards,

..Remy