forked from M-Labs/artiq-zynq
101 lines
3.2 KiB
Rust
101 lines
3.2 KiB
Rust
use core::{mem::transmute, task::Poll};
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use alloc::{borrow::ToOwned, format};
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use libboard_zynq::{
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println,
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self as zynq,
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smoltcp::{
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self,
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wire::{EthernetAddress, IpAddress, Ipv4Address, IpCidr},
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iface::{NeighborCache, EthernetInterfaceBuilder, Routes},
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time::Instant,
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},
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};
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use libsupport_zynq::alloc::{vec, vec::Vec};
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use libasync::smoltcp::{Sockets, TcpStream};
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async fn handle_connection(stream: TcpStream) -> smoltcp::Result<()> {
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stream.send("Enter your name: ".bytes()).await?;
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let name = stream.recv(|buf| {
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for (i, b) in buf.iter().enumerate() {
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if *b == '\n' as u8 {
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return match core::str::from_utf8(&buf[0..i]) {
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Ok(name) =>
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Poll::Ready((i + 1, Some(name.to_owned()))),
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Err(_) =>
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Poll::Ready((i + 1, None))
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};
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}
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}
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if buf.len() > 100 {
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// Too much input, consume all
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Poll::Ready((buf.len(), None))
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} else {
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Poll::Pending
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}
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}).await?;
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match name {
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Some(name) =>
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stream.send(format!("Hello {}!\n", name).bytes()).await?,
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None =>
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stream.send("I had trouble reading your name.\n".bytes()).await?,
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}
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stream.flush().await;
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Ok(())
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}
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const HWADDR: [u8; 6] = [0, 0x23, 0xab, 0xad, 0x1d, 0xea];
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const IPADDR: IpAddress = IpAddress::Ipv4(Ipv4Address([192, 168, 1, 52]));
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pub fn network_main() {
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let eth = zynq::eth::Eth::default(HWADDR.clone());
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const RX_LEN: usize = 8;
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let mut rx_descs = (0..RX_LEN)
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.map(|_| zynq::eth::rx::DescEntry::zeroed())
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.collect::<Vec<_>>();
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let mut rx_buffers = vec![zynq::eth::Buffer::new(); RX_LEN];
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// Number of transmission buffers (minimum is two because with
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// one, duplicate packet transmission occurs)
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const TX_LEN: usize = 8;
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let mut tx_descs = (0..TX_LEN)
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.map(|_| zynq::eth::tx::DescEntry::zeroed())
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.collect::<Vec<_>>();
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let mut tx_buffers = vec![zynq::eth::Buffer::new(); TX_LEN];
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let eth = eth.start_rx(&mut rx_descs, &mut rx_buffers);
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let mut eth = eth.start_tx(
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// HACK
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unsafe { transmute(tx_descs.as_mut_slice()) },
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unsafe { transmute(tx_buffers.as_mut_slice()) },
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);
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let ethernet_addr = EthernetAddress(HWADDR);
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let mut ip_addrs = [IpCidr::new(IPADDR, 24)];
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let mut routes_storage = vec![None; 4];
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let routes = Routes::new(&mut routes_storage[..]);
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let mut neighbor_storage = vec![None; 256];
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let neighbor_cache = NeighborCache::new(&mut neighbor_storage[..]);
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let mut iface = EthernetInterfaceBuilder::new(&mut eth)
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.ethernet_addr(ethernet_addr)
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.ip_addrs(&mut ip_addrs[..])
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.routes(routes)
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.neighbor_cache(neighbor_cache)
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.finalize();
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Sockets::init(32);
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TcpStream::listen(1381, 2048, 2048, 8, |stream| async {
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let _ = handle_connection(stream)
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.await
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.map_err(|e| println!("Connection: {:?}", e));
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});
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let mut time = 0u32;
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Sockets::run(&mut iface, || {
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time += 1;
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Instant::from_millis(time)
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});
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}
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