From: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
To: "Vineet.Gupta1@synopsys.com" <Vineet.Gupta1@synopsys.com>,
"Alexey.Brodkin@synopsys.com" <Alexey.Brodkin@synopsys.com>,
"linux-snps-arc@lists.infradead.org"
<linux-snps-arc@lists.infradead.org>
Cc: "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"stable@vger.kernel.org" <stable@vger.kernel.org>,
"robh+dt@kernel.org" <robh+dt@kernel.org>,
"devicetree@vger.kernel.org" <devicetree@vger.kernel.org>
Subject: Re: [PATCH] ARC: AXS10x/HSDK: Allow U-Boot to pass MAC-address to the kernel
Date: Mon, 6 Aug 2018 13:24:56 +0000 [thread overview]
Message-ID: <1533561894.32021.5.camel@synopsys.com> (raw)
In-Reply-To: <C2D7FE5348E1B147BCA15975FBA23075012B089D74@us01wembx1.internal.synopsys.com>
Hi Vineet,
On Thu, 2018-08-02 at 21:58 +0000, Vineet Gupta wrote:
> On 08/02/2018 03:19 AM, Alexey Brodkin wrote:
> > Otherwise kernel uses random MAC which is not very conveniet.
>
> Curious what exactly is the issue - why does the user care what MAC is assigned ?
>
> > With that change in place use might set desired MAC in U-Boot
> > with "setenv ethaddr 11:22:33:44:55:66", save environment and
> > then from boot to boot the same MAC will be used by the kernel.
> >
>
> And what if one is running without uboot - it will resort to all zeros vs. random
> yet working MAC ?
>
If one is running without u-boot - it will resort to random MAC as we don't treat
"00:00:00:00:00:00" as a valid Ethernet address.
Look at following link for more details.
https://elixir.bootlin.com/linux/v4.18-rc8/source/include/linux/etherdevice.h#L184
BTW:
Tested-by: Evgeniy Paltsev <paltsev@synopsys.com>
>
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--
Eugeniy Paltsev
prev parent reply other threads:[~2018-08-06 13:24 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-08-02 10:19 [PATCH] ARC: AXS10x/HSDK: Allow U-Boot to pass MAC-address to the kernel Alexey Brodkin
2018-08-02 21:58 ` Vineet Gupta
2018-08-06 13:24 ` Eugeniy Paltsev [this message]
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