netdev - perm_addr get

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Message-ID: <20121221130127.GB2040@minipsycho.orion>
Date:	Fri, 21 Dec 2012 14:01:27 +0100
From:	Jiri Pirko <jiri@...nulli.us>
To:	netdev@...r.kernel.org
Cc:	bhutchings@...arflare.com
Subject: perm_addr get

Hi all.

>From what I understand dev->perm_addr is set only in case the hw has
permanent hw address somewhere written (for example EPROM).

So when I query device which does not have perm_addr set I get:

testt1:~$ ethtool -P team0
Permanent address: 00:00:00:00:00:00

Is this the correct behaviour? Wouldn't it be more correct if
ethtool_get_perm_addr() fails with -ENOENT for something like that?

Thanks.

Jiri
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