netdev - Re: [PATCH net-next 1/2] ldmvsw: add vio version and remote-mac to ethtool info

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Message-Id: <20170621.150546.230947714652245325.davem@davemloft.net>
Date:   Wed, 21 Jun 2017 15:05:46 -0400 (EDT)
From:   David Miller <davem@...emloft.net>
To:     shannon.nelson@...cle.com
Cc:     netdev@...r.kernel.org, sparclinux@...r.kernel.org
Subject: Re: [PATCH net-next 1/2] ldmvsw: add vio version and remote-mac to
 ethtool info

From: Shannon Nelson <shannon.nelson@...cle.com>
Date: Wed, 21 Jun 2017 09:09:53 -0700

> In the ethtool -i output print the vio version and the remote-mac
> of the ldom that the vif device is serving as this vif info is
> not exposed elsewhere.  The remote-mac address is most useful for
> tracking which client ldom is being served by the vif.
> 
> Orabug: 26316362
> 
> Signed-off-by: Shannon Nelson <shannon.nelson@...cle.com>

Although less useful, it is exposed already via the kernel logs.

Also, this is not at all an appropriate place to expose this.  The
"driver info" ethtool command is not a place to post per-connection
or per-link information.

Probably one of the IFLA_* netlink attributes would work best for
this.  You could even use PHYS_PORT_ID for this, which gives you
32 bytes to work with.