io_uring_register_ifq(3)        liburing Manual       io_uring_register_ifq(3)

NAME
       io_uring_register_ifq - register a zero-copy receive interface queue

SYNOPSIS
       #include <liburing.h>

       int io_uring_register_ifq(struct io_uring *ring,
                                 struct io_uring_zcrx_ifq_reg *reg);

DESCRIPTION
       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.


RETURN VALUE
       Returns 0 on success. On error, a negative errno value is returned.

SEE ALSO
       io_uring_register(2), io_uring_setup(2)

liburing-2.10                  January 18, 2025       io_uring_register_ifq(3)