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Message-ID: <20230113204336.401a2062@kernel.org>
Date:   Fri, 13 Jan 2023 20:43:36 -0800
From:   Jakub Kicinski <kuba@...nel.org>
To:     Vladimir Oltean <vladimir.oltean@....com>
Cc:     netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Paolo Abeni <pabeni@...hat.com>,
        Michal Kubecek <mkubecek@...e.cz>,
        Claudiu Manoil <claudiu.manoil@....com>,
        Vinicius Costa Gomes <vinicius.gomes@...el.com>,
        Xiaoliang Yang <xiaoliang.yang_1@....com>,
        Kurt Kanzenbach <kurt@...utronix.de>,
        Rui Sousa <rui.sousa@....com>,
        Ferenc Fejes <ferenc.fejes@...csson.com>,
        Pranavi Somisetty <pranavi.somisetty@....com>,
        Harini Katakam <harini.katakam@....com>,
        Colin Foster <colin.foster@...advantage.com>,
        UNGLinuxDriver@...rochip.com,
        Alexandre Belloni <alexandre.belloni@...tlin.com>,
        Andrew Lunn <andrew@...n.ch>,
        Florian Fainelli <f.fainelli@...il.com>
Subject: Re: [PATCH v2 net-next 04/12] net: ethtool: netlink: retrieve stats
 from multiple sources (eMAC, pMAC)

On Wed, 11 Jan 2023 18:16:58 +0200 Vladimir Oltean wrote:
> +/**
> + * enum ethtool_stats_src - source of ethtool statistics
> + * @ETHTOOL_STATS_SRC_AGGREGATE:
> + *	if device supports a MAC merge layer, this retrieves the aggregate
> + *	statistics of the eMAC and pMAC. Otherwise, it retrieves just the
> + *	statistics of the single (express) MAC.
> + * @ETHTOOL_STATS_SRC_EMAC:
> + *	if device supports a MM layer, this retrieves the eMAC statistics.
> + *	Otherwise, it retrieves the statistics of the single (express) MAC.
> + * @ETHTOOL_STATS_SRC_PMAC:
> + *	if device supports a MM layer, this retrieves the pMAC statistics.
> + */
> +enum ethtool_stats_src {
> +	ETHTOOL_STATS_SRC_AGGREGATE,
> +	ETHTOOL_STATS_SRC_EMAC,
> +	ETHTOOL_STATS_SRC_PMAC,
> +};

Should we somehow call it "MAC stats"?

Right now its named like a generic attribute, but it's not part of 
the header nest (ETHTOOL_A_HEADER_*).

I'm not sure myself which way is better, but feels like either it
should be generic, in the header nest, and parsed by the common code;
or named more specifically and stay in the per-cmd attrs.

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