You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: netlink.rs
    path of file: ./repos/aya/aya/src/sys
    
    the code of the file until where you have to start completion: use std::{
    collections::HashMap,
    ffi::CStr,
    io, mem,
    os::fd::{AsRawFd as _, BorrowedFd, FromRawFd as _, OwnedFd},
    ptr, slice,
};

use libc::{
    getsockname, nlatt
    
fn parse_attrs(buf: &[u8]) -> Result<HashMap<u16, NlAttr<'_>>, NlAttrError> {
    let mut attrs = HashMap::new();
    for attr in NlAttrsIterator::new(buf) {
        let attr = attr?;
        attrs.insert(attr.header.nla_type & NLA_TYPE_MASK as u16, attr);
    }
    Ok(attrs)
}