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

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Message-ID: <cf277ccc-5228-41dc-abd5-d486244682dd@gmail.com>
Date: Sat, 28 Jun 2025 07:10:36 +0100
From: Pavel Begunkov <asml.silence@...il.com>
To: Jens Axboe <axboe@...nel.dk>, 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 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

-- 
Pavel Begunkov