netdev - Re: [RFC] net: hsr: Provide RedBox support

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Message-ID: <20240228083115.01d4c93e@hermes.local>
Date: Wed, 28 Feb 2024 08:31:15 -0800
From: Stephen Hemminger <stephen@...workplumber.org>
To: Lukasz Majewski <lukma@...x.de>
Cc: Oleksij Rempel <o.rempel@...gutronix.de>, Andrew Lunn <andrew@...n.ch>,
 Eric Dumazet <edumazet@...gle.com>, Florian Fainelli
 <f.fainelli@...il.com>, Vladimir Oltean <olteanv@...il.com>, "David S.
 Miller" <davem@...emloft.net>, Jakub Kicinski <kuba@...nel.org>,
 netdev@...r.kernel.org, Tristram.Ha@...rochip.com, Sebastian Andrzej
 Siewior <bigeasy@...utronix.de>, Paolo Abeni <pabeni@...hat.com>, Ravi
 Gunasekaran <r-gunasekaran@...com>, Simon Horman <horms@...nel.org>,
 Wojciech Drewek <wojciech.drewek@...el.com>, Nikita Zhandarovich
 <n.zhandarovich@...tech.ru>, Murali Karicheri <m-karicheri2@...com>, Dan
 Carpenter <dan.carpenter@...aro.org>, Ziyang Xuan
 <william.xuanziyang@...wei.com>, Kristian Overskeid <koverskeid@...il.com>,
 Matthieu Baerts <matttbe@...nel.org>, linux-kernel@...r.kernel.org
Subject: Re: [RFC] net: hsr: Provide RedBox support

On Wed, 28 Feb 2024 16:07:35 +0100
Lukasz Majewski <lukma@...x.de> wrote:

>  
> +/* hsr_proxy_node_table_show - Formats and prints proxy node_table entries */
> +static int
> +hsr_proxy_node_table_show(struct seq_file *sfp, void *data)
> +{
> +	struct hsr_priv *priv = (struct hsr_priv *)sfp->private;
> +	struct hsr_node *node;
> +
> +	seq_printf(sfp, "Proxy Node Table entries for HSR device\n");
> +	seq_puts(sfp, "MAC-Address-SAN,        time_in\n");
> +	rcu_read_lock();
> +	list_for_each_entry_rcu(node, &priv->proxy_node_db, mac_list) {
> +		seq_printf(sfp, "%pM ", &node->macaddress_A[0]);
> +		seq_printf(sfp, "%10lx\n", node->time_in[HSR_PT_INTERLINK]);
> +	}
> +	rcu_read_unlock();
> +	return 0;
> +}
> +
>  DEFINE_SHOW_ATTRIBUTE(hsr_node_table);
> +DEFINE_SHOW_ATTRIBUTE(hsr_proxy_node_table);

NAK
Do not abuse sysfs to be a debug proc style output.

Sysfs is supposed to be one value per file (or not used at all).
Formatting belongs in the user space program.