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io_uring_register_napi

liburing_rs

Function io_uring_register_napi 

Source 
pub unsafe extern "C" fn io_uring_register_napi(
    ring: *mut io_uring,
    napi: *mut io_uring_napi,
) -> c_int
Expand description

Register NAPI busy poll settings

§DESCRIPTION

The io_uring_register_napi 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

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