netdev - Re: [RFC next-next v2 1/5] net: marvell: prestera: Add driver for Prestera family ASIC devices

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Message-ID: <20200511172440.GK2245@nanopsycho>
Date:   Mon, 11 May 2020 19:24:40 +0200
From:   Jiri Pirko <jiri@...nulli.us>
To:     Andrew Lunn <andrew@...n.ch>
Cc:     Vadym Kochan <vadym.kochan@...ision.eu>, netdev@...r.kernel.org,
        "David S. Miller" <davem@...emloft.net>,
        Oleksandr Mazur <oleksandr.mazur@...ision.eu>,
        Serhiy Boiko <serhiy.boiko@...ision.eu>,
        Serhiy Pshyk <serhiy.pshyk@...ision.eu>,
        Volodymyr Mytnyk <volodymyr.mytnyk@...ision.eu>,
        Taras Chornyi <taras.chornyi@...ision.eu>,
        Andrii Savka <andrii.savka@...ision.eu>,
        Jiri Pirko <jiri@...lanox.com>,
        Ido Schimmel <idosch@...lanox.com>,
        Chris Packham <Chris.Packham@...iedtelesis.co.nz>
Subject: Re: [RFC next-next v2 1/5] net: marvell: prestera: Add driver for
 Prestera family ASIC devices

Mon, May 11, 2020 at 06:43:24PM CEST, andrew@...n.ch wrote:
>> Though in this case, it is not really a MAC, it is a BASE_MAC...
>> Maybe in DSA world this is usual?
>
>In the DSA world we take the MAC address from the master interface.
>And all slave interfaces have the same MAC address, so it is not
>really a base MAC, it is The MAC. The slaves are however allowed to
>change their MAC address.
>
>Where the master interface gets its MAC address from is somebody elses
>problem.

Understood. So we need to figure out how to handle base MAC here.
In mlxsw, it is queriable from FW.