From: Pavel Begunkov <[email protected]>
To: Stefan Metzmacher <[email protected]>,
io-uring <[email protected]>, Jens Axboe <[email protected]>
Cc: Jakub Kicinski <[email protected]>, netdev <[email protected]>,
Dylan Yudaken <[email protected]>
Subject: Re: IORING_SEND_NOTIF_USER_DATA (was Re: IORING_CQE_F_COPIED)
Date: Thu, 20 Oct 2022 16:37:01 +0100 [thread overview]
Message-ID: <[email protected]> (raw)
In-Reply-To: <[email protected]>
On 10/20/22 11:10, Stefan Metzmacher wrote:
> Hi Pavel,
>
>>> Experimenting with this stuff lets me wish to have a way to
>>> have a different 'user_data' field for the notif cqe,
>>> maybe based on a IORING_RECVSEND_ flag, it may make my life
>>> easier and would avoid some complexity in userspace...
>>> As I need to handle retry on short writes even with MSG_WAITALL
>>> as EINTR and other errors could cause them.
>>>
>>> What do you think?
>
> Any comment on this?
>
> IORING_SEND_NOTIF_USER_DATA could let us use
> notif->cqe.user_data = sqe->addr3;
I'd rather not use the last available u64, tbh, that was the
reason for not adding a second user_data in the first place.
Maybe IORING_SETUP_SQE128?
--
Pavel Begunkov
next prev parent reply other threads:[~2022-10-20 15:38 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-10-14 11:06 IORING_CQE_F_COPIED Stefan Metzmacher
2022-10-17 16:46 ` IORING_CQE_F_COPIED Pavel Begunkov
2022-10-18 8:43 ` IORING_CQE_F_COPIED Stefan Metzmacher
2022-10-19 15:06 ` IORING_CQE_F_COPIED Pavel Begunkov
2022-10-19 16:12 ` IORING_CQE_F_COPIED Stefan Metzmacher
2022-10-20 2:24 ` IORING_CQE_F_COPIED Pavel Begunkov
2022-10-20 10:04 ` IORING_SEND_NOTIF_REPORT_USAGE (was Re: IORING_CQE_F_COPIED) Stefan Metzmacher
2022-10-20 13:46 ` Pavel Begunkov
2022-10-20 14:51 ` Stefan Metzmacher
2022-10-20 15:31 ` Pavel Begunkov
2022-10-21 9:36 ` Stefan Metzmacher
2022-10-21 11:09 ` Pavel Begunkov
2022-10-21 14:03 ` Stefan Metzmacher
2022-10-27 8:47 ` Stefan Metzmacher
2022-10-27 10:51 ` Pavel Begunkov
2022-10-20 10:10 ` IORING_SEND_NOTIF_USER_DATA " Stefan Metzmacher
2022-10-20 15:37 ` Pavel Begunkov [this message]
2022-10-21 8:32 ` Stefan Metzmacher
2022-10-21 9:27 ` Pavel Begunkov
2022-10-21 9:45 ` Stefan Metzmacher
2022-10-21 11:20 ` Pavel Begunkov
2022-10-21 12:10 ` Stefan Metzmacher
2022-10-21 10:15 ` Stefan Metzmacher
2022-10-21 11:26 ` Pavel Begunkov
2022-10-21 12:38 ` Stefan Metzmacher
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