netdev - Re: [PATCH net 0/1] Prevent DSA tags from breaking COE

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Date: Fri, 22 Dec 2023 15:46:43 +0200
From: Vladimir Oltean <olteanv@...il.com>
To: Lucas Pereira <lucasvp@...il.com>
Cc: Household Cang <canghousehold@....com>,
	Romain Gantois <romain.gantois@...tlin.com>,
	Alexandre Torgue <alexandre.torgue@...s.st.com>,
	Jose Abreu <joabreu@...opsys.com>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
	Maxime Coquelin <mcoquelin.stm32@...il.com>,
	Miquel Raynal <miquel.raynal@...tlin.com>,
	Maxime Chevallier <maxime.chevallier@...tlin.com>,
	Sylvain Girard <sylvain.girard@...com>,
	Pascal EBERHARD <pascal.eberhard@...com>,
	Richard Tresidder <rtresidd@...ctromag.com.au>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	"linux-stm32@...md-mailman.stormreply.com" <linux-stm32@...md-mailman.stormreply.com>,
	"linux-arm-kernel@...ts.infradead.org" <linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH net 0/1] Prevent DSA tags from breaking COE

On Fri, Dec 22, 2023 at 10:22:21AM -0300, Lucas Pereira wrote:
> Dear community collaborators,
> 
> First of all, I would like to thank you for the prompt response and
> the suggestions provided.
> 
> We conducted the tests as indicated, but unfortunately, the problem
> persists. It seems to me that if it were a Checksum-related issue, the
> behavior would be different, as the VPN and communication work
> normally for several days before failing suddenly.
> 
> We have observed that the only effective ways to reestablish
> communication, so far, are through a system reboot or by changing the
> authentication cipher, such as switching from MD5 to SHA1.
> Interestingly, when switching back to the MD5 cipher, the
> communication fails to function again.
> 
> I am immensely grateful for the help received so far and would greatly
> appreciate any further suggestions or recommendations that you might
> offer to resolve this challenge.
> 
> Sincerely,
> Lucas

Are you responding to the right thread? This is about on-board Ethernet
switch chips attached to Synopsys MAC hardware IPs.