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From: Jacob Keller <jacob.e.keller@intel.com>
To: Arthur Kiyanovski <akiyano@amazon.com>,
	David Miller <davem@davemloft.net>,
	Jakub Kicinski <kuba@kernel.org>, <netdev@vger.kernel.org>
Cc: Richard Cochran <richardcochran@gmail.com>,
	Eric Dumazet <edumazet@google.com>,
	Paolo Abeni <pabeni@redhat.com>,
	David Woodhouse <dwmw2@infradead.org>,
	Thomas Gleixner <tglx@linutronix.de>,
	Miroslav Lichvar <mlichvar@redhat.com>,
	Andrew Lunn <andrew+netdev@lunn.ch>,
	Wen Gu <guwen@linux.alibaba.com>,
	Xuan Zhuo <xuanzhuo@linux.alibaba.com>,
	"David Woodhouse" <dwmw@amazon.com>,
	Yonatan Sarna <ysarna@amazon.com>,
	"Zorik Machulsky" <zorik@amazon.com>,
	Alexander Matushevsky <matua@amazon.com>,
	"Saeed Bshara" <saeedb@amazon.com>, Matt Wilson <msw@amazon.com>,
	Anthony Liguori <aliguori@amazon.com>,
	Nafea Bshara <nafea@amazon.com>,
	Evgeny Schmeilin <evgenys@amazon.com>,
	Netanel Belgazal <netanel@amazon.com>,
	Ali Saidi <alisaidi@amazon.com>,
	Benjamin Herrenschmidt <benh@amazon.com>,
	Noam Dagan <ndagan@amazon.com>,
	David Arinzon <darinzon@amazon.com>,
	Evgeny Ostrovsky <evostrov@amazon.com>,
	Ofir Tabachnik <ofirt@amazon.com>,
	Amit Bernstein <amitbern@amazon.com>,
	<linux-kselftest@vger.kernel.org>, <linux-doc@vger.kernel.org>,
	<shuah@kernel.org>, Jonathan Corbet <corbet@lwn.net>,
	Shuah Khan <skhan@linuxfoundation.org>,
	Simon Horman <horms@kernel.org>, <vadim.fedorenko@linux.dev>
Subject: Re: [PATCH v4 net-next 7/7] net: ena: Implement gettimexattrs64 callback for PTP attributes
Date: Tue, 14 Jul 2026 17:47:35 -0700	[thread overview]
Message-ID: <f8974bb1-e27d-480c-8f88-6aea3ef41ad8@intel.com> (raw)
In-Reply-To: <20260714020340.25014-8-akiyano@amazon.com>

On 7/13/2026 7:03 PM, Arthur Kiyanovski wrote:
> Implement the gettimexattrs64 callback in the ENA driver to support
> the PTP_SYS_OFFSET_EXTENDED_ATTRS ioctl.
> 
> This enables applications to retrieve PHC timestamps with quality
> attributes through the standard PTP ioctl interface.
> 
> The ENA device currently reports only error_bound (valid bit set).
> Other attributes are not reported (valid bits unset).

Typically it would be a policy not to introduce new attributes which are
not yet used, and add the other attributes once a user appears. However,
I think it makes sense to have the full set of desired attributes
especially given the ioctl interface limitations which would otherwise
require a lot of reserved space or new ioctl numbers. Especially given
the uAPI here has been discussed and changed heavily from previous patch
iterations.

      reply	other threads:[~2026-07-15  0:47 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-07-14  2:03 [PATCH v4 net-next 0/7] ptp: Add PHC timestamp quality attributes Arthur Kiyanovski
2026-07-14  2:03 ` [PATCH v4 net-next 1/7] ptp: Add ioctls for PHC timestamps with " Arthur Kiyanovski
2026-07-15  0:45   ` Jacob Keller
2026-07-14  2:03 ` [PATCH v4 net-next 2/7] selftests/ptp: Extract print_system_timestamp helper in testptp Arthur Kiyanovski
2026-07-14  2:03 ` [PATCH v4 net-next 3/7] selftests/ptp: Add testptp support for attributes ioctls Arthur Kiyanovski
2026-07-14  2:03 ` [PATCH v4 net-next 4/7] ptp: ptp_vmclock: Implement " Arthur Kiyanovski
2026-07-14  2:03 ` [PATCH v4 net-next 5/7] net: ena: Update PHC admin interface for error bound support Arthur Kiyanovski
2026-07-14  2:03 ` [PATCH v4 net-next 6/7] net: ena: Add error bound to PHC communication layer Arthur Kiyanovski
2026-07-14  2:03 ` [PATCH v4 net-next 7/7] net: ena: Implement gettimexattrs64 callback for PTP attributes Arthur Kiyanovski
2026-07-15  0:47   ` Jacob Keller [this message]

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