netdev - Re: [PATCH net-next v2 4/8] net: ethtool: pse-pd: Expand pse commands with the PSE PoE interface

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Message-ID: <e0b143dc-ca7e-4762-bd0b-3acffad0932b@lunn.ch>
Date: Sun, 3 Dec 2023 19:45:18 +0100
From: Andrew Lunn <andrew@...n.ch>
To: Kory Maincent <kory.maincent@...tlin.com>
Cc: "David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
	Jonathan Corbet <corbet@....net>,
	Luis Chamberlain <mcgrof@...nel.org>,
	Russ Weight <russ.weight@...ux.dev>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	"Rafael J. Wysocki" <rafael@...nel.org>,
	Rob Herring <robh+dt@...nel.org>,
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Oleksij Rempel <o.rempel@...gutronix.de>,
	Thomas Petazzoni <thomas.petazzoni@...tlin.com>,
	netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-doc@...r.kernel.org, devicetree@...r.kernel.org,
	Dent Project <dentproject@...uxfoundation.org>
Subject: Re: [PATCH net-next v2 4/8] net: ethtool: pse-pd: Expand pse
 commands with the PSE PoE interface

> @@ -143,6 +150,43 @@ ethnl_set_pse(struct ethnl_req_info *req_info, struct genl_info *info)
>  		return -EOPNOTSUPP;
>  	}
>  
> +	if (!tb[ETHTOOL_A_PODL_PSE_ADMIN_CONTROL] &&
> +	    !tb[ETHTOOL_A_C33_PSE_ADMIN_CONTROL])
> +		return 0;

-EINVAL? Is there a real use case for not passing either of them?

> +
> +	if (tb[ETHTOOL_A_PODL_PSE_ADMIN_CONTROL] &&
> +	    !(pse_get_types(phydev->psec) & PSE_PODL)) {
> +		NL_SET_ERR_MSG_ATTR(info->extack,
> +				    tb[ETHTOOL_A_PODL_PSE_ADMIN_CONTROL],
> +				    "setting PSE PoDL admin control not supported");
> +		return -EOPNOTSUPP;
> +	}
> +	if (tb[ETHTOOL_A_C33_PSE_ADMIN_CONTROL] &&
> +	    !(pse_get_types(phydev->psec) & PSE_C33)) {
> +		NL_SET_ERR_MSG_ATTR(info->extack,
> +				    tb[ETHTOOL_A_C33_PSE_ADMIN_CONTROL],
> +				    "setting PSE PoE admin control not supported");

This probably should be C33, not PoE?

I guess it depends on what the user space tools are using. 

	Andrew