> > > +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