netdev - Re: [PATCH v2 0/5] io_uring cmd for tx timestamps

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Message-ID: <0d287955-c55a-4f1e-86c9-5c301f3f233b@gmail.com>
Date: Wed, 4 Jun 2025 09:53:23 +0100
From: Pavel Begunkov <asml.silence@...il.com>
To: io-uring@...r.kernel.org, Vadim Fedorenko <vadim.fedorenko@...ux.dev>
Cc: netdev@...r.kernel.org, Eric Dumazet <edumazet@...gle.com>,
 Kuniyuki Iwashima <kuniyu@...zon.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 <stfomichev@...il.com>
Subject: Re: [PATCH v2 0/5] io_uring cmd for tx timestamps

On 6/4/25 09:42, 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.
> 
> It should be reasonable to take it through the io_uring tree once
> we have consensus, but let me know if there are any concerns.

CC'ing Stanislav as he took a look at v1

-- 
Pavel Begunkov