linux-kernel - Re: [PATCHv3 net-next 2/3] ptp: add ioctl interface for ptp

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Date: Thu, 4 Jan 2024 14:37:42 -0800
From: Richard Cochran <richardcochran@...il.com>
To: Mahesh Bandewar <maheshb@...gle.com>
Cc: Netdev <netdev@...r.kernel.org>, Linux <linux-kernel@...r.kernel.org>,
	David Miller <davem@...emloft.net>,
	Jakub Kicinski <kuba@...nel.org>,
	Eric Dumazet <edumazet@...gle.com>, Paolo Abeni <pabeni@...hat.com>,
	Jonathan Corbet <corbet@....net>, John Stultz <jstultz@...gle.com>,
	Don Hatchett <hatch@...gle.com>, Yuliang Li <yuliangli@...gle.com>,
	Mahesh Bandewar <mahesh@...dewar.net>,
	Willem de Bruijn <willemb@...gle.com>
Subject: Re: [PATCHv3 net-next 2/3] ptp: add ioctl interface for
 ptp_gettimex64any()

On Thu, Jan 04, 2024 at 01:24:39PM -0800, Mahesh Bandewar wrote:

> @@ -226,6 +238,8 @@ struct ptp_pin_desc {
>  	_IOWR(PTP_CLK_MAGIC, 18, struct ptp_sys_offset_extended)
>  #define PTP_MASK_CLEAR_ALL  _IO(PTP_CLK_MAGIC, 19)
>  #define PTP_MASK_EN_SINGLE  _IOW(PTP_CLK_MAGIC, 20, unsigned int)
> +#define PTP_SYS_OFFSET_ANY \
> +	_IOWR(PTP_CLK_MAGIC, 21, struct ptp_sys_offset_any)

As I said before, this functionality really ought to be a new system call.

Did you see these patch series posted on the list?

 31.Dec'23 Sagi Maimon          [PATCH v4] posix-timers: add multi_clock_gettime system call
 31.Dec'23 Andy Lutomirski      ├─>
 01.Jan'24 Sagi Maimon          │ └─>
 01.Jan'24 kernel test rob      ├─>
 01.Jan'24 kernel test rob      └─>

 02.Jan'24 Sagi Maimon          [PATCH v5] posix-timers: add multi_clock_gettime system call
 02.Jan'24 Arnd Bergmann        ├─>
 03.Jan'24 Sagi Maimon          │ └─>
 04.Jan'24 kernel test rob      └─>

I think this will be the way forward.

Please review the multi_clock_gettime series and help refine it.

Thanks,
Richard