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From: Richard Cochran <richardcochran@gmail.com>
To: David Arinzon <darinzon@amazon.com>
Cc: David Miller <davem@davemloft.net>,
	Jakub Kicinski <kuba@kernel.org>,
	Eric Dumazet <edumazet@google.com>,
	Paolo Abeni <pabeni@redhat.com>,
	"Woodhouse, David" <dwmw@amazon.com>,
	Andrew Lunn <andrew@lunn.ch>,
	Miroslav Lichvar <mlichvar@redhat.com>,
	David Woodhouse <dwmw2@infradead.org>,
	Thomas Gleixner <tglx@linutronix.de>,
	netdev@vger.kernel.org, "Machulsky, Zorik" <zorik@amazon.com>,
	"Matushevsky, Alexander" <matua@amazon.com>,
	Saeed Bshara <saeedb@amazon.com>, "Wilson, Matt" <msw@amazon.com>,
	"Liguori, Anthony" <aliguori@amazon.com>,
	"Bshara, Nafea" <nafea@amazon.com>,
	"Schmeilin, Evgeny" <evgenys@amazon.com>,
	"Belgazal, Netanel" <netanel@amazon.com>,
	"Saidi, Ali" <alisaidi@amazon.com>,
	"Herrenschmidt, Benjamin" <benh@amazon.com>,
	"Kiyanovski, Arthur" <akiyano@amazon.com>,
	"Dagan, Noam" <ndagan@amazon.com>,
	"Bernstein, Amit" <amitbern@amazon.com>,
	"Ostrovsky, Evgeny" <evostrov@amazon.com>,
	"Tabachnik, Ofir" <ofirt@amazon.com>,
	Julien Ridoux <ridouxj@amazon.com>,
	Josh Levinson <joshlev@amazon.com>
Subject: Re: [RFC PATCH net-next] ptp: Introduce PTP_SYS_OFFSET_EXTENDED_TRUSTED ioctl
Date: Thu, 24 Jul 2025 21:09:23 -0700	[thread overview]
Message-ID: <aIMDc8JC4prOmpLQ@hoboy.vegasvil.org> (raw)
In-Reply-To: <20250724115657.150-1-darinzon@amazon.com>

On Thu, Jul 24, 2025 at 02:56:56PM +0300, David Arinzon wrote:

> The first objective focuses on the use case where the PHC device
> is fully managed. The ENA driver, for example, exposes a PHC
> device, whose synchronization status and quality is maintained
> without any user-space application. This new ioctl reports on the
> clock accuracy and status of the PHC device to user-space
> applications, where ptp4l and similar are not available.

This seems pretty rare.  I can't think of any other hardware that
makes claims about synchronization quality.

So this ioctl would be just for one device.

Thanks,
Richard

  parent reply	other threads:[~2025-07-25  4:09 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-07-24 11:56 [RFC PATCH net-next] ptp: Introduce PTP_SYS_OFFSET_EXTENDED_TRUSTED ioctl David Arinzon
2025-07-24 14:08 ` David Woodhouse
2025-07-25  4:09 ` Richard Cochran [this message]
2025-07-25  9:25   ` David Woodhouse
2025-07-29  3:55     ` Richard Cochran
2025-08-03 23:42       ` julien
2025-08-08 12:10       ` Maciek Machnikowski
2025-07-28 14:26 ` Miroslav Lichvar
2025-08-03 23:51   ` Julien Ridoux
2025-08-04  9:07     ` David Woodhouse
  -- strict thread matches above, loose matches on Subject: below --
2025-07-29  2:29 Ridoux, Julien

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