linux-kernel - Re: [Intel-wired-lan] [PATCH] e1000e: disregard NVM checksum on tgp when valid checksum mask is not set

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Message-ID: <c0ece81e-6fee-41bb-96c9-eef36b09af37@jacekk.info>
Date: Tue, 3 Jun 2025 23:00:46 +0200
From: Jacek Kowalski <jacek@...ekk.info>
To: "Lifshits, Vitaly" <vitaly.lifshits@...el.com>, Vlad URSU <vlad@...u.me>,
 Tony Nguyen <anthony.l.nguyen@...el.com>,
 Przemek Kitszel <przemyslaw.kitszel@...el.com>,
 Andrew Lunn <andrew+netdev@...n.ch>, "David S. Miller"
 <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>,
 Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>
Cc: intel-wired-lan@...ts.osuosl.org, netdev@...r.kernel.org,
 linux-kernel@...r.kernel.org
Subject: Re: [Intel-wired-lan] [PATCH] e1000e: disregard NVM checksum on tgp
 when valid checksum mask is not set

>>> If no update is available, perhaps we can consider ignoring the 
>>> checksum on TGP systems if one of the following conditions is met:
>>> 1. SW compatibility bit is not set (current Jacek's approach)
>>> 2. The checksum word at offset 0x3F retains its factory default value 
>>> of 0xFFFF.
>>
>> I am already on the latest firmware. I have also tried downgrading to 
>> earlier versions and they have the same problem.
> 
> Ok, so in this case I think that we should go with option 2.
> 
> Jacek - can you please add this check to your patch?

Yes, I'll prepare v2 by the end of this week.

-- 
Best regards,
   Jacek Kowalski