netdev - Re: [PATCH net-next 03/10] net: sparx5: add hostmode with phylink support

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Date:   Tue, 20 Apr 2021 12:54:14 +0000
From:   <Steen.Hegelund@...rochip.com>
To:     <kuba@...nel.org>
CC:     <andrew@...n.ch>, <masahiroy@...nel.org>,
        <Bjarni.Jonasson@...rochip.com>, <davem@...emloft.net>,
        <linux-kernel@...r.kernel.org>, <UNGLinuxDriver@...rochip.com>,
        <alexandre.belloni@...tlin.com>, <linux@...linux.org.uk>,
        <Lars.Povlsen@...rochip.com>, <arnd@...db.de>,
        <p.zabel@...gutronix.de>, <simon.horman@...ronome.com>,
        <linux-arm-kernel@...ts.infradead.org>, <netdev@...r.kernel.org>,
        <mark.einon@...il.com>, <madalin.bucur@....nxp.com>
Subject: Re: [PATCH net-next 03/10] net: sparx5: add hostmode with phylink
 support

Hi Jacub,


On Fri, 2021-04-16 at 14:22 -0700, Jakub Kicinski wrote:
> EXTERNAL EMAIL: Do not click links or open attachments unless you know the content is safe
> 
> On Fri, 16 Apr 2021 15:16:50 +0200 Steen Hegelund wrote:
> > +static int sparx5_set_mac_address(struct net_device *dev, void *p)
> > +{
> > +     const struct sockaddr *addr = p;
> > +
> > +     /* Record the address */
> > +     ether_addr_copy(dev->dev_addr, addr->sa_data);
> 
> I think you need to validate that add is a valid ethernet address.
> is_valid_ether_addr()

I will add validation.

> 
> > +struct net_device *sparx5_create_netdev(struct sparx5 *sparx5, u32 portno)
> > +{
> > +     struct sparx5_port *spx5_port;
> > +     struct net_device *ndev;
> > +     u64 val;
> > +
> > +     ndev = devm_alloc_etherdev(sparx5->dev, sizeof(struct sparx5_port));
> > +     if (!ndev)
> > +             return ERR_PTR(-ENOMEM);
> > +
> > +     SET_NETDEV_DEV(ndev, sparx5->dev);
> > +     spx5_port = netdev_priv(ndev);
> > +     spx5_port->ndev = ndev;
> > +     spx5_port->sparx5 = sparx5;
> > +     spx5_port->portno = portno;
> > +     sparx5_set_port_ifh(spx5_port->ifh, portno);
> > +     snprintf(ndev->name, IFNAMSIZ, "eth%d", portno);
> 
> Please don't try to name interfaces in the kernel.

OK.  I will remove that.

Thanks for your comments.

BR
Steen