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NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | SEE ALSO | COLOPHON |
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io_uring_register_ifq(3) liburing Manual io_uring_register_ifq(3)
io_uring_register_ifq - register a zero-copy receive interface
queue
#include <liburing.h>
int io_uring_register_ifq(struct io_uring *ring,
struct io_uring_zcrx_ifq_reg *reg);
The io_uring_register_ifq(3) function registers a zero-copy
receive interface queue with the io_uring instance specified by
ring. Zero-copy receive allows the kernel to place incoming
network data directly into application-provided memory without
copying.
The reg argument is a pointer to a struct io_uring_zcrx_ifq_reg
that describes the interface queue to register. See
io_uring_register(2) for a description of the
IORING_REGISTER_ZCRX_IFQ operation and the structure fields.
The io_uring ring must have been created with
IORING_SETUP_DEFER_TASKRUN and either IORING_SETUP_CQE32 or
IORING_SETUP_CQE_MIXED flags set. The caller must have the
CAP_NET_ADMIN capability.
Returns 0 on success. On error, a negative errno value is
returned.
io_uring_register(2), io_uring_setup(2)
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 2026-05-24. (At that time,
the date of the most recent commit that was found in the
repository was 2026-05-18.) 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-2.10 January 18, 2025 io_uring_register_ifq(3)
Pages that refer to this page: io_uring_register_ifq(3)
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HTML rendering created 2026-05-24 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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