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// SPDX-License-Identifier: MIT
#![cfg(feature = "tokio_socket")]
use futures::stream::TryStreamExt;
use rtnetlink::{new_connection, Error, Handle};
use std::{env, net::IpAddr};
#[tokio::main]
async fn main() -> Result<(), ()> {
let args: Vec<String> = env::args().collect();
if args.len() != 3 {
usage();
return Ok(());
}
let link_name = &args[1];
let ip: IpAddr = args[2].parse().unwrap_or_else(|_| {
eprintln!("invalid IP address");
std::process::exit(1);
});
let (connection, handle, _) = new_connection().unwrap();
tokio::spawn(connection);
if let Err(e) = add_neighbour(link_name, ip, handle.clone()).await {
eprintln!("{e}");
}
Ok(())
}
async fn add_neighbour(
link_name: &str,
ip: IpAddr,
handle: Handle,
) -> Result<(), Error> {
let mut links = handle
.link()
.get()
.match_name(link_name.to_string())
.execute();
if let Some(link) = links.try_next().await? {
handle
.neighbours()
.add(link.header.index, ip)
.execute()
.await?;
println!("Done");
}
Ok(())
}
fn usage() {
eprintln!(
"usage:
cargo run --example add_neighbour -- <link_name> <ip_address>
Note that you need to run this program as root. Instead of running cargo as root,
build the example normally:
cd rtnetlink ; cargo build --example add_neighbour
Then find the binary in the target directory:
cd ../target/debug/example ; sudo ./add_neighbour <link_name> <ip_address>"
);
}
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