linux-kernel - Re: [PATCH v2 net-next 04/12] net: ethtool: netlink: retrieve stats from multiple sources (eMAC, pMAC)

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Message-ID: <20230117105444.7c1c1e35@kernel.org>
Date:   Tue, 17 Jan 2023 10:54:44 -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 Mon, 16 Jan 2023 19:42:34 +0200 Vladimir Oltean wrote:
> The request seems to be for ETHTOOL_A_PAUSE_HEADER to use a policy like this:
> 
>  const struct nla_policy ethnl_header_policy_mac_stats[] = {
>  	[ETHTOOL_A_HEADER_DEV_INDEX]	= { .type = NLA_U32 },
>  	[ETHTOOL_A_HEADER_DEV_NAME]	= { .type = NLA_NUL_STRING,
>  					    .len = ALTIFNAMSIZ - 1 },
>  	[ETHTOOL_A_HEADER_FLAGS]	= NLA_POLICY_MASK(NLA_U32,
>  							  ETHTOOL_FLAGS_STATS),
> +	[ETHTOOL_A_HEADER_MAC_STATS_SRC] = NLA_POLICY_MASK(NLA_U32,
> +							   ETHTOOL_MAC_STATS_SRC_PMAC),
>  };
> 
> and for ETHTOOL_A_STATS_HEADER to use a policy like this:
> 
> const struct nla_policy ethnl_header_policy_mac_stats_src_basic[] = {
> 	[ETHTOOL_A_HEADER_DEV_INDEX]	= { .type = NLA_U32 },
> 	[ETHTOOL_A_HEADER_DEV_NAME]	= { .type = NLA_NUL_STRING,
> 					    .len = ALTIFNAMSIZ - 1 },
> 	[ETHTOOL_A_HEADER_FLAGS]	= NLA_POLICY_MASK(NLA_U32,
> 							  ETHTOOL_FLAGS_BASIC),
> +	[ETHTOOL_A_HEADER_MAC_STATS_SRC] = NLA_POLICY_MASK(NLA_U32,
> +							   ETHTOOL_MAC_STATS_SRC_PMAC),
> };
> 
> Did I get this right?

Sorry for the delay, I was out for $national-holiday.

This would be right, but it seems like you went for the other option 
in v3, which is also fine.