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

[Pavel Begunkov <asml.silence@gmail.com>]

On 6/4/25 13:06, Jens Axboe wrote:
> On 6/4/25 2:42 AM, 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.
> 
> Still looks fine to me - is there a liburing test case as well?

Just a hacky adaptation of a selftest for now and requires tc
incantations either way.

-- 
Pavel Begunkov