netdev - Re: [PATCH] net-core: remove unnecessary ETHTOOL

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Date:   Thu, 23 Jan 2020 21:01:06 +0100
From:   Michal Kubecek <mkubecek@...e.cz>
To:     netdev@...r.kernel.org
Cc:     Luigi Rizzo <lrizzo@...gle.com>, Andrew Lunn <andrew@...n.ch>,
        "David S. Miller" <davem@...emloft.net>
Subject: Re: [PATCH] net-core: remove unnecessary ETHTOOL_GCHANNELS
 initialization

On Thu, Jan 23, 2020 at 09:47:56AM -0800, Luigi Rizzo wrote:
> 
> For the same reason though (comply with the header) we might perhaps
> want to replace with cmd with ETHTOOL_SCHANNELS before actually
> calling dev->ethtool_ops->set_channels()
> 
> (I realize this is not particularly important)

That structure is filled by copy_from_user() and the structure passed by
userspace already has .cmd = ETHTOOL_SCHANNELS - otherwise we wouldn't
end up in ethtool_set_channels().

Michal