PROSAGA码农传奇-DBDK-从Rust FFI访问DPDK中的静态C函数

我是一个相当新手的程序员，遇到了我认为我理解但不知道如何解决的问题。我试图使用Rust FFI与C语言中的Intel DPDK进行交互。我的第一个尝试是重新创建helloworld示例应用程序。我遇到了一个编译错误，我认为这是由于DPDK中的函数是静态的，并且不能直接从库中获得。我的FFI界面在这里：
<pre><code>use libc::{c_uint, c_int, c_void, c_char};

pub type LcoreFunctionT =
    extern "C" fn(arg1: *mut c_void) -> c_int;

extern {
 pub fn rte_eal_init(argc: c_int,
 argv: *mut *mut c_char) -> c_int;
 pub fn rte_eal_remote_launch(f: *mut LcoreFunctionT,
 arg: *mut c_void,
 slave_id: c_uint) -> c_int;
 pub fn rte_eal_mp_wait_lcore() -> ();
 pub fn rte_lcore_id() -> c_uint;
 pub fn rte_get_next_lcore(i: c_uint,
 skip_master: c_int,
 wrap: c_int) -> c_uint;
}
</code></pre>我也有一个库对此进行引用并包装了这些函数：
<pre><code>extern crate libc;

use libc::{c_uint, c_int, c_char, c_void};
use std::ffi::CString;
use std::ptr;

mod ffi_rte_eal;

pub fn dpdk_rte_eal_init(argc: i32, argv: Vec<String>) -> i32 {
 let mut args: Vec<*mut c_char> =
 argv.iter().map(|x| CString::new(x.clone()).unwrap().into_raw()).collect();
 let retc: c_int = unsafe {ffi_rte_eal::rte_eal_init(argc as c_int, args.as_mut_ptr())};
 let ret: i32 = retc as i32;
 ret
}

pub fn dpdk_rte_eal_remote_launch(f: extern "C" fn(*mut c_void) -> i32,
                                    slave_id: u32 ) -> i32 {
    let mut fc: ffi_rte_eal::LcoreFunctionT = f;
    let retc: c_int = unsafe {ffi_rte_eal::rte_eal_remote_launch(&mut fc,
                                                                ptr::null_mut() as *mut c_void,
                                                                slave_id as c_uint)};
    let ret: i32 = retc as i32;
    ret
}

pub fn dpdk_rte_eal_mp_wait_lcore() -> (){
    unsafe {
        ffi_rte_eal::rte_eal_mp_wait_lcore();
    }
}

pub fn dpdk_rte_lcore_id() -> u32 {
    let retc: c_uint = unsafe {ffi_rte_eal::rte_lcore_id()};
    let ret: u32 = retc as u32;
    ret
}

pub fn dpdk_rte_get_next_lcore(i: u32,
 skip_master: i32,
 wrap: i32) -> u32 {
 let retc: c_uint = unsafe {ffi_rte_eal::rte_get_next_lcore(i as c_uint,
 skip_master as c_int,
 wrap as c_int)};
 let ret: u32 = retc as u32;
 ret
}
</code></pre>还有一个build.rs文件，用于链接库-
<pre><code>//build.rs

fn main() {
 println!("cargo:rustc-link-lib=static=rte_eal");
 println!("cargo:rustc-link-search=native=/usr/local/lib");
 println!("cargo:rustc-link-lib=static=rte_mempool");
 println!("cargo:rustc-link-search=native=/usr/local/lib");
 println!("cargo:rustc-link-lib=static=rte_ring");
 println!("cargo:rustc-link-search=native=/usr/local/lib");
}
</code></pre>当我尝试编译我自己对FFI接口应用，我把即将未定义的引用收到错误rte_lcore_id和rte_get_next_lcore。根据DPDK的API文档，这些函数是librte_eal库的一部分，但在rte_lcore.h中定义为静态函数。我假设这些是静态函数，我将无法从Rust看到它们。在与DPDK捆绑在一起的helloworld示例应用程序中，它们直接导入rte_lcore.h。我认为这就是为什么他们可以不参考librte_eal而访问这些功能的原因？是否有一种方法可以在Rust中访问此函数，还是必须有类似C的填充程序这样的东西才能让我包装这些函数并通过FFI使它们可用？