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Subject: Re: [PATCH net-next v3 5/5] ethtool: provide link mode names as a
 string set
To:     Michal Kubecek <mkubecek@suse.cz>,
        David Miller <davem@davemloft.net>, netdev@vger.kernel.org
Cc:     Jakub Kicinski <jakub.kicinski@netronome.com>,
        Jiri Pirko <jiri@resnulli.us>, Andrew Lunn <andrew@lunn.ch>,
        John Linville <linville@tuxdriver.com>,
        Stephen Hemminger <stephen@networkplumber.org>,
        Johannes Berg <johannes@sipsolutions.net>,
        linux-kernel@vger.kernel.org
References: <cover.1576057593.git.mkubecek@suse.cz>
 <7aa9bf09b8007967b9aa1c48b3c342fd36bcc8b4.1576057593.git.mkubecek@suse.cz>
From:   Florian Fainelli <f.fainelli@gmail.com>
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Message-ID: <f4ac49ee-79a2-b91c-ae9a-1c7ab56580f1@gmail.com>
Date:   Wed, 11 Dec 2019 20:12:08 -0800
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On 12/11/2019 1:58 AM, Michal Kubecek wrote:
> Unlike e.g. netdev features, the ethtool ioctl interface requires link mode
> table to be in sync between kernel and userspace for userspace to be able
> to display and set all link modes supported by kernel. The way arbitrary
> length bitsets are implemented in netlink interface, this will be no longer
> needed.
> 
> To allow userspace to access all link modes running kernel supports, add
> table of ethernet link mode names and make it available as a string set to
> userspace GET_STRSET requests. Add build time check to make sure names
> are defined for all modes declared in enum ethtool_link_mode_bit_indices.
> 
> Once the string set is available, make it also accessible via ioctl.
> 
> Signed-off-by: Michal Kubecek <mkubecek@suse.cz>
> Reviewed-by: Andrew Lunn <andrew@lunn.ch>
> Reviewed-by: Jiri Pirko <jiri@mellanox.com>

Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>

I would have almost treated the _Half_ modes a special to omit
specifying Full for 90% of the remaining modes and save both characters
and room for errors, but that's fine this way too.
-- 
Florian