Re: [RFC PATCH net-next v2 05/10] net: ethtool: Allow passing a phy index for some commands

[Maxime Chevallier <maxime.chevallier@bootlin.com>]

On Tue, 21 Nov 2023 02:08:37 +0100
Andrew Lunn <andrew@lunn.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