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NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | SEE ALSO | COLOPHON |
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io_uring_get_sqe128(3) liburing Manual io_uring_get_sqe128(3)
io_uring_get_sqe128 - get the next available 128-byte submission
queue entry from the submission queue
#include <liburing.h>
struct io_uring_sqe *io_uring_get_sqe128(struct io_uring *ring);
The io_uring_get_sqe128(3) function gets the next available
128-byte submission queue entry from the submission queue
belonging to the ring param.
On success io_uring_get_sqe128(3) returns a pointer to the
submission queue entry. On failure NULL is returned.
If a submission queue entry is returned, it should be filled out
via one of the prep functions such as
io_uring_prep_uring_cmd128(3) and submitted via
io_uring_submit(3).
Note that neither io_uring_get_sqe128(3) nor the prep functions
set (or clear) the user_data field of the SQE. If the caller
expects io_uring_cqe_get_data(3) or io_uring_cqe_get_data64(3) to
return valid data when reaping IO completions, either
io_uring_sqe_set_data(3) or io_uring_sqe_set_data64(3) MUST have
been called before submitting the request.
io_uring_get_sqe128(3) returns a pointer to the next submission
queue event on success and NULL on failure. If NULL is returned,
the SQ ring either wasn't created with support for 128-byte SQE
entries ( IORING_SETUP_SQE128 or IORING_SETUP_SQE_MIXED ) or is
currently full and entries must be submitted for processing before
new ones can get allocated.
io_uring_get_sqe(3), io_uring_submit(3), io_uring_sqe_set_data(3)
This page is part of the liburing (A library for io_uring)
project. Information about the project can be found at
⟨https://github.com/axboe/liburing⟩. If you have a bug report for
this manual page, send it to io-uring@vger.kernel.org. This page
was obtained from the project's upstream Git repository
⟨https://github.com/axboe/liburing⟩ on 2026-01-16. (At that time,
the date of the most recent commit that was found in the
repository was 2026-01-13.) If you discover any rendering
problems in this HTML version of the page, or you believe there is
a better or more up-to-date source for the page, or you have
corrections or improvements to the information in this COLOPHON
(which is not part of the original manual page), send a mail to
man-pages@man7.org
liburing-2.13 October 22, 2025 io_uring_get_sqe128(3)
Pages that refer to this page: io_uring_get_sqe128(3)
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HTML rendering created 2026-01-16 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
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