netdev - Re: [PATCH net-next] ibmvnic: Improve output for unsupported stats

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Message-ID: <20171002215723.GN17713@lunn.ch>
Date:   Mon, 2 Oct 2017 23:57:23 +0200
From:   Andrew Lunn <andrew@...n.ch>
To:     John Allen <jallen@...ux.vnet.ibm.com>
Cc:     netdev@...r.kernel.org, Thomas Falcon <tlfalcon@...ux.vnet.ibm.com>
Subject: Re: [PATCH net-next] ibmvnic: Improve output for unsupported stats

On Mon, Oct 02, 2017 at 03:31:39PM -0500, John Allen wrote:
> The vnic server can report -1 in the event that a given statistic is not
> supported. Currently, the -1 value is implicitly cast to an unsigned
> integer and appears through the ethtool -S output as a very large number.
> This patch improves this behavior by reporting 0 in the event that a
> given statistic is not supported.

Hi John

If it does not exist, why not skip it altogether?
ibmvnic_get_sset_count() could walk the list and count the valid ones.
ibmvnic_get_strings() could only return the name of the valid onces.

      Andrew