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From: Vadym Kochan <vadym.kochan@plvision.eu>
To: Andy Shevchenko <andy.shevchenko@gmail.com>
Cc: Willem de Bruijn <willemdebruijn.kernel@gmail.com>,
	"David S. Miller" <davem@davemloft.net>,
	Jakub Kicinski <kuba@kernel.org>, Jiri Pirko <jiri@mellanox.com>,
	Ido Schimmel <idosch@mellanox.com>, Andrew Lunn <andrew@lunn.ch>,
	Oleksandr Mazur <oleksandr.mazur@plvision.eu>,
	Serhiy Boiko <serhiy.boiko@plvision.eu>,
	Serhiy Pshyk <serhiy.pshyk@plvision.eu>,
	Volodymyr Mytnyk <volodymyr.mytnyk@plvision.eu>,
	Taras Chornyi <taras.chornyi@plvision.eu>,
	Andrii Savka <andrii.savka@plvision.eu>,
	Network Development <netdev@vger.kernel.org>,
	linux-kernel <linux-kernel@vger.kernel.org>,
	Mickey Rachamim <mickeyr@marvell.com>
Subject: Re: [PATCH net v6 1/6] net: marvell: prestera: Add driver for Prestera family ASIC devices
Date: Fri, 4 Sep 2020 12:34:09 +0300	[thread overview]
Message-ID: <20200904093409.GB10654@plvision.eu> (raw)
In-Reply-To: <CAHp75VcmPnmgxgE+NCTN71Wq17LQjjx8cJOR34AmuLuRFQ4cRg@mail.gmail.com>

On Thu, Sep 03, 2020 at 06:35:34PM +0300, Andy Shevchenko wrote:
> On Thu, Sep 3, 2020 at 6:23 PM Willem de Bruijn
> <willemdebruijn.kernel@gmail.com> wrote:
> > On Wed, Sep 2, 2020 at 5:37 PM Vadym Kochan <vadym.kochan@plvision.eu> wrote:
> 
> ...
> 
> > > +static int prestera_is_valid_mac_addr(struct prestera_port *port, u8 *addr)
> > > +{
> > > +       if (!is_valid_ether_addr(addr))
> > > +               return -EADDRNOTAVAIL;
> > > +
> > > +       if (memcmp(port->sw->base_mac, addr, ETH_ALEN - 1))
> >
> > Why ETH_ALEN - 1?
> 
> We even have a lot of helpers specifically for ethernet MACs.
> Starting from [1] till almost the end of the file. Here [2] can be
> used (or its unaligned counterpart).
> 
> [1]: https://elixir.bootlin.com/linux/latest/source/include/linux/etherdevice.h#L67
> [2]: https://elixir.bootlin.com/linux/latest/source/include/linux/etherdevice.h#L67
> 
> > > +               return -EINVAL;
> > > +
> > > +       return 0;
> > > +}
> 
> > > +       memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
> >
> > Is addr_len ever not ETH_ALEN for this device?
> 
> And if it is ETH_ALEN, here is [3].
> [3]: https://elixir.bootlin.com/linux/latest/source/include/linux/etherdevice.h#L287

Thanks Andy, I missed this one to replace with ether_addr_copy().

> 
> -- 
> With Best Regards,
> Andy Shevchenko

  reply	other threads:[~2020-09-04  9:34 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-09-02 15:04 [PATCH net v6 0/6] net: marvell: prestera: Add Switchdev driver for Prestera family ASIC device 98DX3255 (AC3x) Vadym Kochan
2020-09-02 15:04 ` [PATCH net v6 1/6] net: marvell: prestera: Add driver for Prestera family ASIC devices Vadym Kochan
2020-09-03 15:22   ` Willem de Bruijn
2020-09-03 15:35     ` Andy Shevchenko
2020-09-04  9:34       ` Vadym Kochan [this message]
2020-09-04  9:32     ` Vadym Kochan
2020-09-04 13:32       ` Andrew Lunn
2020-09-04 15:54         ` Vadym Kochan
2020-09-02 15:04 ` [PATCH net v6 2/6] net: marvell: prestera: Add PCI interface support Vadym Kochan
2020-09-02 15:04 ` [PATCH net v6 3/6] net: marvell: prestera: Add basic devlink support Vadym Kochan
2020-09-02 15:04 ` [PATCH net v6 4/6] net: marvell: prestera: Add ethtool interface support Vadym Kochan
2020-09-02 15:04 ` [PATCH net v6 5/6] net: marvell: prestera: Add Switchdev driver implementation Vadym Kochan
2020-09-03 17:18   ` Willem de Bruijn
2020-09-04  9:34     ` Vadym Kochan
2020-09-02 15:04 ` [PATCH net v6 6/6] dt-bindings: marvell,prestera: Add description for device-tree bindings Vadym Kochan
2020-09-02 20:57 ` [PATCH net v6 0/6] net: marvell: prestera: Add Switchdev driver for Prestera family ASIC device 98DX3255 (AC3x) Vadym Kochan

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