netdev - Re: [PATCH net-next V2 1/3] ptp: Add ioctl commands to expose raw cycle counter values

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Message-ID: <1384ef6c-4c20-49fb-9a9f-1ee8b8ce012a@nvidia.com>
Date: Mon, 25 Aug 2025 20:52:52 +0300
From: Mark Bloch <mbloch@...dia.com>
To: Paolo Abeni <pabeni@...hat.com>,
 Richard Cochran <richardcochran@...il.com>
Cc: Saeed Mahameed <saeedm@...dia.com>, Leon Romanovsky <leon@...nel.org>,
 netdev@...r.kernel.org, linux-rdma@...r.kernel.org,
 linux-kernel@...r.kernel.org, Gal Pressman <gal@...dia.com>,
 Thomas Gleixner <tglx@...utronix.de>, Carolina Jubran <cjubran@...dia.com>,
 Jakub Kicinski <kuba@...nel.org>, Vladimir Oltean <vladimir.oltean@....com>,
 Dragos Tatulea <dtatulea@...dia.com>, "David S. Miller"
 <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>,
 Tariq Toukan <tariqt@...dia.com>, Andrew Lunn <andrew+netdev@...n.ch>
Subject: Re: [PATCH net-next V2 1/3] ptp: Add ioctl commands to expose raw
 cycle counter values

On 19/08/2025 11:43, Paolo Abeni wrote:
> On 8/12/25 4:17 PM, Tariq Toukan wrote:
>> From: Carolina Jubran <cjubran@...dia.com>
>>
>> Introduce two new ioctl commands, PTP_SYS_OFFSET_PRECISE_CYCLES and
>> PTP_SYS_OFFSET_EXTENDED_CYCLES, to allow user space to access the
>> raw free-running cycle counter from PTP devices.
>>
>> These ioctls are variants of the existing PRECISE and EXTENDED
>> offset queries, but instead of returning device time in realtime,
>> they return the raw cycle counter value.
>>
>> Signed-off-by: Carolina Jubran <cjubran@...dia.com>
>> Reviewed-by: Dragos Tatulea <dtatulea@...dia.com>
>> Signed-off-by: Tariq Toukan <tariqt@...dia.com>
> 
> Hi Richard,
> 
> can we have a formal ack here?

Gentle reminder.

Mark
> 
> Thanks,
> 
> Paolo
>