From: Vladimir Oltean <vladimir.oltean@nxp.com>
To: Jakub Kicinski <kuba@kernel.org>
Cc: "Köry Maincent" <kory.maincent@bootlin.com>,
"Florian Fainelli" <florian.fainelli@broadcom.com>,
netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-doc@vger.kernel.org,
"Thomas Petazzoni" <thomas.petazzoni@bootlin.com>,
"David S . Miller" <davem@davemloft.net>,
"Eric Dumazet" <edumazet@google.com>,
"Paolo Abeni" <pabeni@redhat.com>,
"Jonathan Corbet" <corbet@lwn.net>,
"Jay Vosburgh" <j.vosburgh@gmail.com>,
"Andy Gospodarek" <andy@greyhouse.net>,
"Nicolas Ferre" <nicolas.ferre@microchip.com>,
"Claudiu Beznea" <claudiu.beznea@tuxon.dev>,
"Horatiu Vultur" <horatiu.vultur@microchip.com>,
UNGLinuxDriver@microchip.com,
"Broadcom internal kernel review list"
<bcm-kernel-feedback-list@broadcom.com>,
"Andrew Lunn" <andrew@lunn.ch>,
"Heiner Kallweit" <hkallweit1@gmail.com>,
"Russell King" <linux@armlinux.org.uk>,
"Richard Cochran" <richardcochran@gmail.com>,
"Radu Pirea" <radu-nicolae.pirea@oss.nxp.com>,
"Willem de Bruijn" <willemdebruijn.kernel@gmail.com>,
"Michael Walle" <michael@walle.cc>,
"Jacob Keller" <jacob.e.keller@intel.com>,
"Maxime Chevallier" <maxime.chevallier@bootlin.com>
Subject: Re: [PATCH net-next v5 08/16] net: ethtool: Add a command to expose current time stamping layer
Date: Fri, 13 Oct 2023 19:14:46 +0300 [thread overview]
Message-ID: <20231013161446.st7tlemyaj3ggkgk@skbuf> (raw)
In-Reply-To: <20231013090020.34e9f125@kernel.org>
On Fri, Oct 13, 2023 at 09:00:20AM -0700, Jakub Kicinski wrote:
> On Tue, 10 Oct 2023 10:23:43 +0200 Köry Maincent wrote:
> > > Why do we have to set NETDEV_TIMESTAMPING here, or is this a round-about
> > > way of enumerating 0, 1, 2 and 3?
> >
> > I answered you above the software timestamping should have the
> > NETDEV_TIMESTAMPING bit set as it is done from the net device driver.
> >
> > What I was thinking is that all the new timestamping should have
> > NETDEV_TIMESTAMPING or PHYLIB_TIMESTAMPING set to know which API to pass
> > through.
> > Like we could add these in the future:
> > MAC_DMA_TIMESTAMPING = (2 << 2) | (1 >> 0),
> > MAC_PRECISION_TIMESTAMPING = (3 << 2) | (1 >> 0),
> > ...
> > PHY_SFP_TIMESTAMPING = (2 << 2) | (1 << 1),
> > ...
>
> What is "PRECISION"? DMA is a separate block like MAC and PHY.
If DMA is a separate block like MAC and PHY, can it have its own PHC
device, and the ethtool UAPI only lists the timestamping-capable PHCs
for one NIC, and is able to select between them? Translation between the
UAPI-visible PHC index and MAC, DMA, phylib PHY, other PHY etc can then
be done by the kernel as needed.
next prev parent reply other threads:[~2023-10-13 16:18 UTC|newest]
Thread overview: 61+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-10-09 15:51 [PATCH net-next v5 00/16] net: Make timestamping selectable Köry Maincent
2023-10-09 15:51 ` [PATCH net-next v5 01/16] net: Convert PHYs hwtstamp callback to use kernel_hwtstamp_config Köry Maincent
2023-10-09 21:02 ` Florian Fainelli
2023-10-10 15:37 ` Simon Horman
2023-10-11 8:27 ` Köry Maincent
2023-10-20 20:23 ` kernel test robot
2023-10-09 15:51 ` [PATCH net-next v5 02/16] net: phy: Remove the call to phy_mii_ioctl in phy_hwstamp_get/set Köry Maincent
2023-10-09 21:04 ` Florian Fainelli
2023-10-09 15:51 ` [PATCH net-next v5 03/16] net: ethtool: Refactor identical get_ts_info implementations Köry Maincent
2023-10-09 19:56 ` kernel test robot
2023-10-09 21:06 ` Florian Fainelli
2023-10-11 21:41 ` Jay Vosburgh
2023-10-09 15:51 ` [PATCH net-next v5 04/16] net: macb: Convert to ndo_hwtstamp_get() and ndo_hwtstamp_set() Köry Maincent
2023-10-09 21:08 ` Florian Fainelli
2023-10-09 15:51 ` [PATCH net-next v5 05/16] net: Make dev_set_hwtstamp_phylib accessible Köry Maincent
2023-10-09 21:09 ` Florian Fainelli
2023-10-10 7:40 ` Köry Maincent
2023-10-09 15:51 ` [PATCH net-next v5 06/16] net_tstamp: Add TIMESTAMPING SOFTWARE and HARDWARE mask Köry Maincent
2023-10-09 21:11 ` Florian Fainelli
2023-10-09 15:51 ` [PATCH net-next v5 07/16] net: phy: micrel: fix ts_info value in case of no phc Köry Maincent
2023-10-09 21:14 ` Florian Fainelli
2023-10-09 15:51 ` [PATCH net-next v5 08/16] net: ethtool: Add a command to expose current time stamping layer Köry Maincent
2023-10-09 21:20 ` Florian Fainelli
2023-10-10 8:23 ` Köry Maincent
2023-10-13 16:00 ` Jakub Kicinski
2023-10-13 16:11 ` Andrew Lunn
2023-10-16 10:41 ` Köry Maincent
2023-10-16 14:22 ` Jakub Kicinski
2023-10-16 15:00 ` Köry Maincent
2023-10-16 15:43 ` Jakub Kicinski
2023-10-16 16:23 ` Köry Maincent
2023-10-16 17:03 ` Jakub Kicinski
2023-10-16 23:03 ` Jacob Keller
2023-10-17 9:21 ` Köry Maincent
2023-10-16 23:50 ` Richard Cochran
2023-10-17 8:29 ` Köry Maincent
2023-10-13 16:14 ` Vladimir Oltean [this message]
2023-10-13 16:30 ` Jakub Kicinski
2023-10-13 17:09 ` Vladimir Oltean
2023-10-13 17:46 ` Jakub Kicinski
2023-10-13 17:56 ` Vladimir Oltean
2023-10-13 20:15 ` Jakub Kicinski
2023-10-09 15:51 ` [PATCH net-next v5 09/16] netlink: specs: Introduce new netlink command to get current timestamp Köry Maincent
2023-10-09 21:21 ` Florian Fainelli
2023-10-10 8:40 ` Köry Maincent
2023-10-09 15:51 ` [PATCH net-next v5 10/16] net: ethtool: Add a command to list available time stamping layers Köry Maincent
2023-10-13 22:52 ` kernel test robot
2023-10-09 15:51 ` [PATCH net-next v5 11/16] netlink: specs: Introduce new netlink " Köry Maincent
2023-10-09 21:22 ` Florian Fainelli
2023-10-09 15:51 ` [PATCH net-next v5 12/16] net: Replace hwtstamp_source by timestamping layer Köry Maincent
2023-10-09 21:23 ` Florian Fainelli
2023-10-09 15:51 ` [PATCH net-next v5 13/16] net: Change the API of PHY default timestamp to MAC Köry Maincent
2023-10-09 22:23 ` Florian Fainelli
2023-10-10 15:52 ` Simon Horman
2023-10-13 1:37 ` kernel test robot
2023-10-09 15:51 ` [PATCH net-next v5 14/16] net: ethtool: ts: Update GET_TS to reply the current selected timestamp Köry Maincent
2023-10-09 15:51 ` [PATCH net-next v5 15/16] net ethtool: net: Let the active time stamping layer be selectable Köry Maincent
2023-10-09 21:28 ` Florian Fainelli
2023-10-10 8:31 ` Köry Maincent
2023-10-09 15:51 ` [PATCH net-next v5 16/16] netlink: specs: Introduce time stamping set command Köry Maincent
2023-10-09 21:29 ` Florian Fainelli
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