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Open Source and information security mailing list archives
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Date: Fri, 17 Mar 2023 21:03:06 -0700 From: Jakub Kicinski <kuba@...nel.org> To: Richard Cochran <richardcochran@...il.com> Cc: Vladimir Oltean <vladimir.oltean@....com>, Köry Maincent <kory.maincent@...tlin.com>, Oleksij Rempel <o.rempel@...gutronix.de>, Horatiu Vultur <horatiu.vultur@...rochip.com>, Michael Walle <michael@...le.cc>, Andrew Lunn <andrew@...n.ch>, Florian Fainelli <f.fainelli@...il.com>, Heiner Kallweit <hkallweit1@...il.com>, netdev@...r.kernel.org, devicetree@...r.kernel.org, linux-kernel@...r.kernel.org, linux-doc@...r.kernel.org, linux-omap@...r.kernel.org, Maxime Chevallier <maxime.chevallier@...tlin.com>, thomas.petazzoni@...tlin.com, Russell King <linux@...linux.org.uk>, "David S. Miller" <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>, Paolo Abeni <pabeni@...hat.com>, Rob Herring <robh+dt@...nel.org>, Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>, Jonathan Corbet <corbet@....net>, Jay Vosburgh <j.vosburgh@...il.com>, Veaceslav Falico <vfalico@...il.com>, Andy Gospodarek <andy@...yhouse.net>, Claudiu Manoil <claudiu.manoil@....com>, Alexandre Belloni <alexandre.belloni@...tlin.com>, UNGLinuxDriver@...rochip.com, Minghao Chi <chi.minghao@....com.cn>, Jie Wang <wangjie125@...wei.com>, Oleksij Rempel <linux@...pel-privat.de>, Sean Anderson <sean.anderson@...o.com>, "Gustavo A. R. Silva" <gustavoars@...nel.org>, Wolfram Sang <wsa+renesas@...g-engineering.com>, Alexander Lobakin <alexandr.lobakin@...el.com>, Marco Bonelli <marco@...eim.net> Subject: Re: [PATCH v3 3/5] net: Let the active time stamping layer be selectable. On Fri, 17 Mar 2023 20:38:49 -0700 Richard Cochran wrote: > On Fri, Mar 17, 2023 at 05:21:50PM +0200, Vladimir Oltean wrote: > > On Thu, Mar 16, 2023 at 04:09:20PM +0100, Köry Maincent wrote: > > > Was there any useful work that could be continued on managing timestamp through > > > NDOs. As it seem we will made some change to the timestamp API, maybe it is a > > > good time to also take care of this. > > > > Not to my knowledge. Yes, I agree that it would be a good time to add an > > NDO for hwtimestamping (while keeping the ioctl fallback), then > > transitioning as many devices as we can, and removing the fallback when > > the transition is complete. > > Um, user space ABI cannot be removed. NDO meaning a dedicated callback in struct net_device_ops, so at least for netdevs we can copy the data from user space, validate in the core and then call the driver with a normal kernel pointer. So just an internal refactoring, no uAPI changes.
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