linux-kernel - Re: [PATCH net-next v3 7/7] net: dsa: microchip: Disable PTP function of KSZ8463

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <96cdeb5c-dd55-4800-9046-09ebbb818e8b@linux.dev>
Date: Wed, 9 Jul 2025 14:33:21 +0100
From: Vadim Fedorenko <vadim.fedorenko@...ux.dev>
To: Tristram.Ha@...rochip.com, Woojung Huh <woojung.huh@...rochip.com>,
 Andrew Lunn <andrew@...n.ch>, Vladimir Oltean <olteanv@...il.com>,
 Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>,
 Conor Dooley <conor+dt@...nel.org>
Cc: Maxime Chevallier <maxime.chevallier@...tlin.com>,
 "David S. Miller" <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>,
 Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
 Marek Vasut <marex@...x.de>, UNGLinuxDriver@...rochip.com,
 devicetree@...r.kernel.org, netdev@...r.kernel.org,
 linux-kernel@...r.kernel.org
Subject: Re: [PATCH net-next v3 7/7] net: dsa: microchip: Disable PTP function
 of KSZ8463

On 09/07/2025 01:32, Tristram.Ha@...rochip.com wrote:
> From: Tristram Ha <tristram.ha@...rochip.com>
> 
> The PTP function of KSZ8463 is on by default.  However, its proprietary
> way of storing timestamp directly in a reserved field inside the PTP
> message header is not suitable for use with the current Linux PTP stack
> implementation.  It is necessary to disable the PTP function to not
> interfere the normal operation of the MAC.

Could you please explain the "proprietary way of storing timestamps"?
Maybe you can provide some examples of headers with timestamps?