Re: [PATCH net v6 1/6] net: marvell: prestera: Add driver for Prestera family ASIC devices

From: Andrew Lunn
Date: Fri Sep 04 2020 - 09:42:45 EST


> > > +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?
> >
> This is the restriction of the port mac address, it must have base mac
> address part at first 5 bytes.

You probably want to put a comment here about that.

And this is particularly user unfriendly. Is this a hardware issue? Or
firmware? Is this likely to change in the future?

Andrew