netdev - RE: [PATCH net-next] net: ethtool: add support for forward error correction modes

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Date:   Sat, 11 Feb 2017 13:33:31 +0000
From:   "Mintz, Yuval" <Yuval.Mintz@...ium.com>
To:     Vidya Sagar Ravipati <vidya@...ulusnetworks.com>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "leedom@...lsio.com" <leedom@...lsio.com>,
        "linville@...driver.com" <linville@...driver.com>,
        "jeffrey.t.kirsher@...el.com" <jeffrey.t.kirsher@...el.com>,
        "davem@...emloft.net" <davem@...emloft.net>
CC:     "roopa@...ulusnetworks.com" <roopa@...ulusnetworks.com>,
        "dustin@...ulusnetworks.com" <dustin@...ulusnetworks.com>,
        "odedw@...lanox.com" <odedw@...lanox.com>,
        "ariela@...lanox.com" <ariela@...lanox.com>,
        "galp@...lanox.com" <galp@...lanox.com>,
        "vidya.chowdary@...il.com" <vidya.chowdary@...il.com>
Subject: RE: [PATCH net-next] net: ethtool: add support for forward error
 correction modes

> +/**
> + * struct ethtool_fecparam - Ethernet forward error correction(fec)
> +parameters
> + * @cmd: Command number = %ETHTOOL_GFECPARAM or
> %ETHTOOL_SFECPARAM
> + * @active_fec: FEC mode which is active on porte
> + * @fec: Bitmask of supported/configured FEC modes
> + * @rsvd: Reserved for future extensions. i.e FEC bypass feature.
> + *
> + * Drivers should reject a non-zero setting of @autoneg when
> + * autoneogotiation is disabled (or not supported) for the link.
> + *
> + */

Why request this from drivers?
Can't you reject such configuration requests in the ethtool-core?