From: Michal Simek <michal.simek@xilinx.com>
To: Tom Rini <trini@konsulko.com>, Michal Simek <michal.simek@xilinx.com>
Cc: Michael Walle <michael@walle.cc>, <rfried.dev@gmail.com>,
<git@xilinx.com>, <joe.hershberger@ni.com>, <sjg@chromium.org>,
<u-boot@lists.denx.de>
Subject: Re: [PATCH] net: uclass: Save ethernet MAC address when generated
Date: Thu, 4 Nov 2021 12:43:11 +0100 [thread overview]
Message-ID: <899b703d-d6ae-7ed7-8f21-2f8a720b8f26@xilinx.com> (raw)
In-Reply-To: <20211104113747.GI24579@bill-the-cat>
On 11/4/21 12:37, Tom Rini wrote:
> On Thu, Nov 04, 2021 at 12:18:46PM +0100, Michal Simek wrote:
>>
>>
>> On 11/3/21 17:57, Tom Rini wrote:
>>> On Tue, Nov 02, 2021 at 11:27:22AM +0100, Michal Simek wrote:
>>>>
>>>>
>>>> On 11/2/21 10:00, Michael Walle wrote:
>>>>>> On Fri, Oct 29, 2021 at 2:14 PM Michal Simek <michal.simek@xilinx.com> wrote:
>>>>>>>
>>>>>>> When MAC address is randomly generated it should be also saved to
>>>>>>> variables. This step is there when MAC address is passed via pdata but not
>>>>>>> when it is randomly generated.
>>>>>>>
>>>>>>> Signed-off-by: Michal Simek <michal.simek@xilinx.com>
>>>>>>> ---
>>>>>>>
>>>>>>> net/eth-uclass.c | 2 ++
>>>>>>> 1 file changed, 2 insertions(+)
>>>>>>>
>>>>>>> diff --git a/net/eth-uclass.c b/net/eth-uclass.c
>>>>>>> index 0da0e85be031..58c308f33276 100644
>>>>>>> --- a/net/eth-uclass.c
>>>>>>> +++ b/net/eth-uclass.c
>>>>>>> @@ -583,6 +583,8 @@ static int eth_post_probe(struct udevice *dev)
>>>>>>> net_random_ethaddr(pdata->enetaddr);
>>>>>>> printf("\nWarning: %s (eth%d) using random MAC address - %pM\n",
>>>>>>> dev->name, dev_seq(dev), pdata->enetaddr);
>>>>>>> + eth_env_set_enetaddr_by_index("eth", dev_seq(dev),
>>>>>>> + pdata->enetaddr);
>>>>>>> #else
>>>>>>> printf("\nError: %s address not set.\n",
>>>>>>> dev->name);
>>>>>>> --
>>>>>>> 2.33.1
>>>>>>>
>>>>>> Reviewed-by: Ramon Fried <rfried.dev@gmail.com>
>>>>>
>>>>> Please note, that this will change behavior. Before this commit, the
>>>>> random mac address was local to u-boot (at least for most network drivers).
>>>>> After this commit, it will also be communicated to linux.
>>>>>
>>>>> I'm not sure what to think of this. At the very least, this should be
>>>>> documented in the commit message and in the Kconfig help text.
>>>>
>>>> Thanks for bringing this up. I have no issue that this address is being
>>>> propagated to Linux but others can feel this as an issue.
>>>> I can definitely extend commit message to say it.
>>>>
>>>> I found this via net list command where you can see controllers but you
>>>> can't see their mac addresses which is IMHO wrong.
>>>
>>> So, this causes dhcp to simply timeout for me on a pine64_plus board
>>> (where yes, I believe we do end up using a random MAC) when running the
>>> pytest suite. I wonder if this particular change messes up the state
>>> machine? Checking the dnsmasq logs it looks like U-Boot keeps asking
>>> and getting a reply, over and over.
>>
>> It is just saving that values to variables. If you want to propagete that
>> values in the stack that's up to your system configuration.
>>
>> What state machine are you talking about?
>
> I was just making a guess about state machine, given what I had recalled
> of the network stack before. To be clearer, I bisected down my failure
> of 3 tests that run "setenv autoload no ; dhcp" and then dhcp timing
> out, to this commit (in the network PR).
First of all I didn't know that it was the part of networking pull
request because didn't see apply message only reviewed from Ramon.
I would be very surprised this patch to caused your issue. It should be
covering something else but that should be debugged.
Thanks,
Michal
next prev parent reply other threads:[~2021-11-04 11:43 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-10-29 11:14 [PATCH] net: uclass: Save ethernet MAC address when generated Michal Simek
2021-11-01 20:25 ` Ramon Fried
2021-11-02 9:00 ` Michael Walle
2021-11-02 10:27 ` Michal Simek
2021-11-03 16:57 ` Tom Rini
2021-11-04 11:18 ` Michal Simek
2021-11-04 11:37 ` Tom Rini
2021-11-04 11:43 ` Michal Simek [this message]
2021-11-04 12:59 ` Tom Rini
2021-11-04 13:06 ` Michal Simek
2021-11-04 2:09 ` Grygorii Strashko
2021-11-04 11:16 ` Michal Simek
2021-11-04 12:27 ` Michael Walle
2021-11-04 13:15 ` Michal Simek
2021-11-04 13:40 ` Michael Walle
2021-11-04 21:00 ` Ramon Fried
2021-11-09 13:55 ` Michael Walle
2021-11-11 9:10 ` Michael Walle
2021-11-16 14:18 ` Tom Rini
2021-11-16 14:56 ` Wolfgang Denk
2021-11-16 18:41 ` Tom Rini
2021-11-17 7:44 ` Wolfgang Denk
2021-11-17 11:50 ` Tom Rini
2021-11-17 12:24 ` Wolfgang Denk
2021-11-17 12:35 ` Tom Rini
2021-11-17 15:56 ` Wolfgang Denk
2021-11-17 16:15 ` Tom Rini
2021-11-18 7:08 ` Wolfgang Denk
2021-11-18 9:46 ` Wolfgang Denk
2021-11-18 14:51 ` Tom Rini
2021-11-18 16:29 ` Tom Rini
2021-11-18 19:04 ` Wolfgang Denk
2021-11-18 19:54 ` Tom Rini
2021-11-19 12:30 ` Michal Simek
2021-11-20 15:56 ` Tom Rini
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