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Message-ID: <20231123143645.0202d6b9@device.home>
Date: Thu, 23 Nov 2023 14:36:45 +0100
From: Maxime Chevallier <maxime.chevallier@...tlin.com>
To: Andrew Lunn <andrew@...n.ch>
Cc: davem@...emloft.net, netdev@...r.kernel.org,
 linux-kernel@...r.kernel.org, thomas.petazzoni@...tlin.com, Jakub Kicinski
 <kuba@...nel.org>, Eric Dumazet <edumazet@...gle.com>, Paolo Abeni
 <pabeni@...hat.com>, Russell King <linux@...linux.org.uk>,
 linux-arm-kernel@...ts.infradead.org, Christophe Leroy
 <christophe.leroy@...roup.eu>, Herve Codina <herve.codina@...tlin.com>,
 Florian Fainelli <f.fainelli@...il.com>, Heiner Kallweit
 <hkallweit1@...il.com>, Vladimir Oltean <vladimir.oltean@....com>,
 Köry Maincent <kory.maincent@...tlin.com>, Jesse Brandeburg
 <jesse.brandeburg@...el.com>
Subject: Re: [RFC PATCH net-next v2 05/10] net: ethtool: Allow passing a phy
 index for some commands

On Tue, 21 Nov 2023 02:08:37 +0100
Andrew Lunn <andrew@...n.ch> wrote:

> > +	if (dev) {
> > +		if (tb[ETHTOOL_A_HEADER_PHY_INDEX]) {
> > +			u32 phy_index = nla_get_u32(tb[ETHTOOL_A_HEADER_PHY_INDEX]);
> > +
> > +			phydev = link_topo_get_phy(&dev->link_topo, phy_index);  
> 
> struct phy_device *link_topo_get_phy(struct link_topology *lt, int phyindex)
> 
> We have u32 vs int here for phyindex. It would be good to have the
> same type everywhere.

Indeed I messed-up the typing for that variable, shame as it's the core
of that series :(

I'll get it right for the next version.

> 
> > +			if (!phydev) {
> > +				NL_SET_ERR_MSG_ATTR(extack, header, "no phy matches phy index");
> > +				return -EINVAL;
> > +			}
> > +		} else {
> > +			/* If we need a PHY but no phy index is specified, fallback
> > +			 * to dev->phydev
> > +			 */
> > +			phydev = dev->phydev;
> > +		}
> > +	}
> > +
> > +	req_info->phydev = phydev;  
> 
> Don't forget to update Documentation/networking/ethtool-netlink.rst.

Yep I'll squeeze the documentation bit here.

Thanks for the review,

Maxime

>       Andrew


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