Function mlx4_fd_set_non_blocking

dpdk/drivers/net/mlx4/mlx4_utils.c:31–41

* Make a file descriptor non-blocking. * * @param fd * File descriptor to alter. * * @return * 0 on success, negative errno value otherwise and rte_errno is set. */

 *   0 on success, negative errno value otherwise and rte_errno is set.
 */
int
mlx4_fd_set_non_blocking(int fd)
{
	int ret = fcntl(fd, F_GETFL);

	if (ret != -1 && !fcntl(fd, F_SETFL, ret | O_NONBLOCK))
		return 0;
	MLX4_ASSERT(errno);
	rte_errno = errno;
	return -rte_errno;
}

/**
 * Internal helper to allocate memory once for several disparate objects.