netdev - Re: [PATCH net v2] net: phy: aquantia: Introduce custom get

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Message-ID: <8a6611fd-bd7b-4d32-8cea-ea925a9979ab@lunn.ch>
Date: Tue, 24 Sep 2024 14:04:03 +0200
From: Andrew Lunn <andrew@...n.ch>
To: Abhishek Chauhan <quic_abchauha@...cinc.com>
Cc: "David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
	netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
	Andrew Halaney <ahalaney@...hat.com>,
	"Russell King (Oracle)" <linux@...linux.org.uk>,
	Heiner Kallweit <hkallweit1@...il.com>,
	Bartosz Golaszewski <bartosz.golaszewski@...aro.org>,
	"linux-tegra@...r.kernel.org" <linux-tegra@...r.kernel.org>,
	Brad Griffis <bgriffis@...dia.com>,
	Vladimir Oltean <vladimir.oltean@....com>,
	Jon Hunter <jonathanh@...dia.com>,
	Maxime Chevallier <maxime.chevallier@...tlin.com>,
	kernel@...cinc.com
Subject: Re: [PATCH net v2] net: phy: aquantia: Introduce custom get_features

> +static void aqr_supported_speed(struct phy_device *phydev, u32 max_speed)
> +{
> +	__ETHTOOL_DECLARE_LINK_MODE_MASK(supported) = { 0, };
> +
> +	linkmode_set_bit(ETHTOOL_LINK_MODE_Autoneg_BIT, supported);
> +	linkmode_set_bit(ETHTOOL_LINK_MODE_Pause_BIT, supported);
> +	linkmode_set_bit(ETHTOOL_LINK_MODE_Asym_Pause_BIT, supported);
> +	linkmode_set_bit(ETHTOOL_LINK_MODE_FIBRE_BIT, supported);
> +	linkmode_set_bit(ETHTOOL_LINK_MODE_TP_BIT, supported);
> +	linkmode_set_bit(ETHTOOL_LINK_MODE_10baseT_Half_BIT, supported);
> +	linkmode_set_bit(ETHTOOL_LINK_MODE_10baseT_Full_BIT, supported);
> +	linkmode_set_bit(ETHTOOL_LINK_MODE_100baseT_Half_BIT, supported);
> +	linkmode_set_bit(ETHTOOL_LINK_MODE_100baseT_Full_BIT, supported);
> +	linkmode_set_bit(ETHTOOL_LINK_MODE_1000baseT_Half_BIT, supported);
> +	linkmode_set_bit(ETHTOOL_LINK_MODE_1000baseT_Full_BIT, supported);
> +
> +	if (max_speed == SPEED_2500) {
> +		linkmode_set_bit(ETHTOOL_LINK_MODE_2500baseX_Full_BIT, supported);
> +		linkmode_set_bit(ETHTOOL_LINK_MODE_2500baseT_Full_BIT, supported);
> +	} else if (max_speed == SPEED_5000) {
> +		linkmode_set_bit(ETHTOOL_LINK_MODE_2500baseX_Full_BIT, supported);
> +		linkmode_set_bit(ETHTOOL_LINK_MODE_2500baseT_Full_BIT, supported);
> +		linkmode_set_bit(ETHTOOL_LINK_MODE_5000baseT_Full_BIT, supported);
> +	}
> +
> +	linkmode_copy(phydev->supported, supported);
> +}

So you have got lots of comments....

Please split this into two patches. One patch for the PHY you are
interested in, and a second patch to remove phy_set_max_speed() and
fix up that PHY.

Also, i would prefer you do the normal feature discovery, calling
genphy_read_abilities() and/or genphy_c45_pma_read_abilities() and
then fixup the results by removing the modes which should not be
there.

Take a look at bcm84881_get_features() as an example.

	Andrew