io_uring_register_napi(3) — Linux manual page

NAME \| SYNOPSIS \| DESCRIPTION \| RETURN VALUE \| COLOPHON

io_uring_register_napi(3)    liburing Manual    io_uring_register_napi(3)

NAME top

       io_uring_register_napi - register NAPI busy poll settings

SYNOPSIS top

       #include <liburing.h>

       int io_uring_register_napi(struct io_uring *ring,
                                  struct io_uring_napi *napi)

DESCRIPTION top

       The io_uring_register_napi(3) function registers the NAPI settings
       for subsequent operations. The NAPI settings are specified in the
       structure that is passed in the napi parameter. The structure
       consists of the napi timeout busy_poll_to (napi busy poll timeout
       in us) and prefer_busy_poll.

       Registering a NAPI settings sets the mode when calling the
       function napi_busy_loop and corresponds to the SO_PREFER_BUSY_POLL
       socket option.

       NAPI busy poll can reduce the network roundtrip time.

RETURN VALUE top

       On success io_uring_register_napi(3) return 0. On failure they
       return -errno.  It also updates the napi structure with the
       current values.

COLOPHON top

       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 2025-02-02.  (At that time,
       the date of the most recent commit that was found in the
       repository was 2025-01-22.)  If you discover any rendering
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liburing-2.4                November 16, 2022   io_uring_register_napi(3)

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