From: Vladimir Oltean <vladimir.oltean@nxp.com>
To: Jakub Kicinski <kuba@kernel.org>
Cc: "Köry Maincent" <kory.maincent@bootlin.com>,
netdev@vger.kernel.org, glipus@gmail.com,
maxime.chevallier@bootlin.com, vadim.fedorenko@linux.dev,
richardcochran@gmail.com, gerhard@engleder-embedded.com,
thomas.petazzoni@bootlin.com, krzysztof.kozlowski+dt@linaro.org,
robh+dt@kernel.org, linux@armlinux.org.uk
Subject: Re: [PATCH net-next RFC v4 2/5] net: Expose available time stamping layers to user space.
Date: Thu, 11 May 2023 23:36:46 +0300 [thread overview]
Message-ID: <20230511203646.ihljeknxni77uu5j@skbuf> (raw)
In-Reply-To: <20230406184646.0c7c2ab1@kernel.org>
On Thu, Apr 06, 2023 at 06:46:46PM -0700, Jakub Kicinski wrote:
> > +/* Hardware layer of the SO_TIMESTAMPING provider */
> > +enum timestamping_layer {
> > + SOF_MAC_TIMESTAMPING = (1<<0),
> > + SOF_PHY_TIMESTAMPING = (1<<1),
>
> We need a value for DMA timestamps here.
What's a DMA timestamp, technically? Is it a snapshot of the PHC's time
domain, just not at the MII pins?
Which drivers provide DMA timestamps, and how do they currently signal
that they do this? Do they do this for all packets that get timestamped,
or for "some"?
next prev parent reply other threads:[~2023-05-11 20:36 UTC|newest]
Thread overview: 76+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-04-06 17:33 [PATCH net-next RFC v4 0/5] net: Make MAC/PHY time stamping selectable Köry Maincent
2023-04-06 17:33 ` [PATCH net-next RFC v4 1/5] net: ethtool: Refactor identical get_ts_info implementations Köry Maincent
2023-04-12 13:16 ` Vladimir Oltean
2023-04-12 13:49 ` Köry Maincent
2023-04-12 16:56 ` Richard Cochran
2023-04-06 17:33 ` [PATCH net-next RFC v4 2/5] net: Expose available time stamping layers to user space Köry Maincent
2023-04-07 1:46 ` Jakub Kicinski
2023-04-07 8:58 ` Köry Maincent
2023-04-07 14:26 ` Jakub Kicinski
2023-04-07 14:44 ` Jakub Kicinski
2023-05-17 19:58 ` Jacob Keller
2023-04-12 10:50 ` Michael Walle
2023-04-12 11:08 ` Vladimir Oltean
2023-04-12 11:12 ` Michael Walle
2023-04-12 12:19 ` Köry Maincent
2023-05-11 20:36 ` Vladimir Oltean [this message]
2023-05-11 20:50 ` Andrew Lunn
2023-05-11 20:55 ` Russell King (Oracle)
2023-05-11 21:02 ` Vladimir Oltean
2023-05-11 22:09 ` Jakub Kicinski
2023-05-11 23:07 ` Vladimir Oltean
2023-05-11 23:16 ` Jakub Kicinski
2023-05-12 10:29 ` Vladimir Oltean
2023-05-12 17:38 ` Jakub Kicinski
2023-05-17 19:19 ` Jakub Kicinski
2023-05-17 19:46 ` Andrew Lunn
2023-05-17 20:07 ` Jakub Kicinski
2023-09-04 15:22 ` Köry Maincent
2023-09-04 17:47 ` Richard Cochran
2023-09-05 18:47 ` Jakub Kicinski
2023-09-05 20:29 ` Andrew Lunn
2023-09-06 9:22 ` Köry Maincent
2023-09-07 9:29 ` Russell King (Oracle)
2023-05-19 13:28 ` Vladimir Oltean
2023-05-19 20:22 ` Jakub Kicinski
2023-05-22 3:56 ` Zulkifli, Muhammad Husaini
2023-05-22 20:04 ` Richard Cochran
2023-05-22 20:21 ` Jakub Kicinski
2023-05-23 3:54 ` Richard Cochran
2023-05-17 22:01 ` Jacob Keller
2023-05-17 22:13 ` Jacob Keller
2023-05-17 22:46 ` Richard Cochran
2023-05-18 23:23 ` Jacob Keller
2023-05-19 12:50 ` Andrew Lunn
2023-05-19 13:50 ` Richard Cochran
2023-05-19 15:18 ` Andrew Lunn
2023-04-08 14:06 ` Richard Cochran
2023-04-06 17:33 ` [PATCH net-next RFC v4 3/5] dt-bindings: net: phy: add timestamp preferred choice property Köry Maincent
2023-04-12 13:14 ` Vladimir Oltean
2023-04-12 13:44 ` Köry Maincent
2023-04-29 17:42 ` Vladimir Oltean
2023-05-02 9:10 ` Köry Maincent
2023-05-11 13:10 ` Vladimir Oltean
2023-05-11 13:25 ` Köry Maincent
2023-05-11 13:56 ` Vladimir Oltean
2023-05-11 14:22 ` Köry Maincent
2023-04-12 14:14 ` Krzysztof Kozlowski
2023-04-06 17:33 ` [PATCH net-next RFC v4 4/5] net: Let the active time stamping layer be selectable Köry Maincent
2023-04-07 1:47 ` Jakub Kicinski
2023-04-29 17:58 ` Vladimir Oltean
2023-05-02 11:05 ` Köry Maincent
2023-05-11 13:48 ` Vladimir Oltean
2023-05-11 15:36 ` Jakub Kicinski
2023-05-11 15:56 ` Vladimir Oltean
2023-05-11 16:25 ` Jakub Kicinski
2023-05-11 20:54 ` Vladimir Oltean
2023-05-11 23:08 ` Jakub Kicinski
2023-05-11 23:18 ` Vladimir Oltean
2023-05-11 23:35 ` Jakub Kicinski
2023-05-15 9:04 ` Köry Maincent
2023-05-16 19:28 ` Jakub Kicinski
2023-05-11 21:06 ` Russell King (Oracle)
2023-05-11 22:54 ` Jakub Kicinski
2023-05-17 22:19 ` Jacob Keller
2023-04-06 17:33 ` [PATCH net-next RFC v4 5/5] net: fix up drivers WRT phy time stamping Köry Maincent
2023-04-06 17:59 ` [PATCH net-next RFC v4 0/5] net: Make MAC/PHY time stamping selectable Köry Maincent
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