linux-kernel - Re: [PATCH net-next 3/5] net/sched: taprio: add netlink reporting for offload statistics counters

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Message-ID: <20230531133307.7oqrcujtqhw7olzj@skbuf>
Date:   Wed, 31 May 2023 16:33:07 +0300
From:   Vladimir Oltean <vladimir.oltean@....com>
To:     Vinicius Costa Gomes <vinicius.gomes@...el.com>
Cc:     netdev@...r.kernel.org, "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Jamal Hadi Salim <jhs@...atatu.com>,
        Cong Wang <xiyou.wangcong@...il.com>,
        Jiri Pirko <jiri@...nulli.us>,
        Kurt Kanzenbach <kurt@...utronix.de>,
        Gerhard Engleder <gerhard@...leder-embedded.com>,
        Amritha Nambiar <amritha.nambiar@...el.com>,
        Ferenc Fejes <ferenc.fejes@...csson.com>,
        Xiaoliang Yang <xiaoliang.yang_1@....com>,
        Roger Quadros <rogerq@...nel.org>,
        Pranavi Somisetty <pranavi.somisetty@....com>,
        Harini Katakam <harini.katakam@....com>,
        Giuseppe Cavallaro <peppe.cavallaro@...com>,
        Alexandre Torgue <alexandre.torgue@...s.st.com>,
        Michael Sit Wei Hong <michael.wei.hong.sit@...el.com>,
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        Oleksij Rempel <linux@...pel-privat.de>,
        Jacob Keller <jacob.e.keller@...el.com>,
        linux-kernel@...r.kernel.org, Andrew Lunn <andrew@...n.ch>,
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        intel-wired-lan@...ts.osuosl.org,
        Muhammad Husaini Zulkifli <muhammad.husaini.zulkifli@...el.com>
Subject: Re: [PATCH net-next 3/5] net/sched: taprio: add netlink reporting
 for offload statistics counters

On Tue, May 30, 2023 at 03:52:17PM -0700, Vinicius Costa Gomes wrote:
> > +	memset(stats, 0xff, sizeof(*stats));
> 
> The only part that I didn't like, at first, was this, that the
> initialization of the offload struct is divided into two parts: one to
> set the command/tc, and one to set the "invalid/not set" value to all
> stats fields.
> 
> I was thinking of adding a macro to do initialization of the stats
> fields, but it has a problem that it won't complain when a new field is
> added. Your solution should always work. I don't have better
> suggestions.

Right, it's no coincidence that it's where it is and the way it is.
Again, I drew inspiration from stats_prepare_data() in ethtool.

> Acked-by: Vinicius Costa Gomes <vinicius.gomes@...el.com>

Thanks for the review.