netdev - Re: (subset) [PATCH v5 0/5] io_uring cmd for tx timestamps

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Message-ID: <46642bea-f9d4-4b56-9d22-393567328075@kernel.dk>
Date: Tue, 8 Jul 2025 12:00:59 -0600
From: Jens Axboe <axboe@...nel.dk>
To: Pavel Begunkov <asml.silence@...il.com>, io-uring@...r.kernel.org,
 Vadim Fedorenko <vadim.fedorenko@...ux.dev>
Cc: netdev@...r.kernel.org, Eric Dumazet <edumazet@...gle.com>,
 Paolo Abeni <pabeni@...hat.com>, Willem de Bruijn <willemb@...gle.com>,
 "David S . Miller" <davem@...emloft.net>, Jakub Kicinski <kuba@...nel.org>,
 Richard Cochran <richardcochran@...il.com>,
 Stanislav Fomichev <sdf@...ichev.me>, Jason Xing
 <kerneljasonxing@...il.com>, Kuniyuki Iwashima <kuniyu@...gle.com>
Subject: Re: (subset) [PATCH v5 0/5] io_uring cmd for tx timestamps

On 7/8/25 12:00 PM, Pavel Begunkov wrote:
> On 7/8/25 18:55, Jens Axboe wrote:
>> On 6/28/25 12:10 AM, Pavel Begunkov wrote:
>>> On 6/27/25 18:07, Jens Axboe wrote:
>>>> On 6/23/25 9:01 AM, Jens Axboe wrote:
>>>>>
>>>>> On Mon, 16 Jun 2025 10:46:24 +0100, Pavel Begunkov wrote:
>>>>>> Vadim Fedorenko suggested to add an alternative API for receiving
>>>>>> tx timestamps through io_uring. The series introduces io_uring socket
>>>>>> cmd for fetching tx timestamps, which is a polled multishot request,
>>>>>> i.e. internally polling the socket for POLLERR and posts timestamps
>>>>>> when they're arrives. For the API description see Patch 5.
>>>>>>
>>>>>> It reuses existing timestamp infra and takes them from the socket's
>>>>>> error queue. For networking people the important parts are Patch 1,
>>>>>> and io_uring_cmd_timestamp() from Patch 5 walking the error queue.
>>>>>>
>>>>>> [...]
>>>>>
>>>>> Applied, thanks!
>>>>>
>>>>> [2/5] io_uring/poll: introduce io_arm_apoll()
>>>>>         commit: 162151889267089bb920609830c35f9272087c3f
>>>>> [3/5] io_uring/cmd: allow multishot polled commands
>>>>>         commit: b95575495948a81ac9b0110aa721ea061dd850d9
>>>>> [4/5] io_uring: add mshot helper for posting CQE32
>>>>>         commit: ac479eac22e81c0ff56c6bdb93fad787015149cc
>>>>> [5/5] io_uring/netcmd: add tx timestamping cmd support
>>>>>         commit: 9e4ed359b8efad0e8ad4510d8ad22bf0b060526a
>>>>
>>>> Pavel, can you send in the liburing PR for these, please?
>>>
>>> It needs a minor clean up, I'll send it by Monday
>>
>> Gentle reminder on this. No rush, just want to make sure it isn't
>> forgotten.
> 
> You already merged the (liburing) test
> 
> commit 21224848af24d379d54fbf1bd43a60861fe19f9b
> Author: Pavel Begunkov <asml.silence@...il.com>
> Date:   Mon Jun 30 18:10:31 2025 +0100
> 
>     tests: add a tx timestamp test

I totally did... Just going over old emails, guess it got lost in post
vacation juggling. Sorry for the noise!

-- 
Jens Axboe