use netlink_packet_core::{
NetlinkHeader, NetlinkMessage, NetlinkPayload, NLM_F_DUMP, NLM_F_REQUEST,
};
use netlink_packet_route::{
link::{LinkAttribute, LinkExtentMask, LinkMessage},
AddressFamily, RouteNetlinkMessage,
};
use netlink_sys::{protocols::NETLINK_ROUTE, Socket, SocketAddr};
fn main() {
let mut socket = Socket::new(NETLINK_ROUTE).unwrap();
let _port_number = socket.bind_auto().unwrap().port_number();
socket.connect(&SocketAddr::new(0, 0)).unwrap();
let mut message = LinkMessage::default();
message.header.interface_family = AddressFamily::Bridge;
message.attributes.push(LinkAttribute::ExtMask(vec![
LinkExtentMask::BrvlanCompressed,
]));
let mut packet = NetlinkMessage::new(
NetlinkHeader::default(),
NetlinkPayload::from(RouteNetlinkMessage::GetLink(message)),
);
packet.header.flags = NLM_F_DUMP | NLM_F_REQUEST;
packet.header.sequence_number = 1;
packet.finalize();
let mut buf = vec![0; packet.header.length as usize];
assert!(buf.len() == packet.buffer_len());
packet.serialize(&mut buf[..]);
println!(">>> {packet:?}");
socket.send(&buf[..], 0).unwrap();
let mut receive_buffer = vec![0; 4096];
let mut offset = 0;
loop {
let size = socket.recv(&mut &mut receive_buffer[..], 0).unwrap();
loop {
let bytes = &receive_buffer[offset..];
let rx_packet: NetlinkMessage<RouteNetlinkMessage> =
NetlinkMessage::deserialize(bytes).unwrap();
println!("<<< {rx_packet:?}");
if matches!(rx_packet.payload, NetlinkPayload::Done(_)) {
println!("Done!");
return;
}
offset += rx_packet.header.length as usize;
if offset == size || rx_packet.header.length == 0 {
offset = 0;
break;
}
}
}
}