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libasync: start smoltcp support

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This commit is contained in:
Astro 2020-03-31 01:16:58 +02:00
parent 48257e989c
commit d2f91eac25
6 changed files with 269 additions and 47 deletions
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21
Cargo.lock generated
View File

@ -15,6 +15,11 @@ name = "byteorder"
version = "1.3.4"
source = "registry+https://github.com/rust-lang/crates.io-index"
[[package]]
name = "cfg-if"
version = "0.1.10"
source = "registry+https://github.com/rust-lang/crates.io-index"
[[package]]
name = "compiler_builtins"
version = "0.1.26"
@ -38,6 +43,7 @@ dependencies = [
"libboard_zynq 0.0.0",
"libcortex_a9 0.0.0",
"pin-utils 0.1.0-alpha.4 (registry+https://github.com/rust-lang/crates.io-index)",
"smoltcp 0.6.0",
]
[[package]]
@ -47,7 +53,8 @@ dependencies = [
"bit_field 0.10.0 (registry+https://github.com/rust-lang/crates.io-index)",
"libcortex_a9 0.0.0",
"libregister 0.0.0",
"smoltcp 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)",
"log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
"smoltcp 0.6.0",
"volatile-register 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
]
@ -85,6 +92,14 @@ name = "linked_list_allocator"
version = "0.8.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
[[package]]
name = "log"
version = "0.4.8"
source = "registry+https://github.com/rust-lang/crates.io-index"
dependencies = [
"cfg-if 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)",
]
[[package]]
name = "managed"
version = "0.7.1"
@ -103,7 +118,6 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
[[package]]
name = "smoltcp"
version = "0.6.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
dependencies = [
"bitflags 1.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
"byteorder 1.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
@ -127,11 +141,12 @@ dependencies = [
"checksum bit_field 0.10.0 (registry+https://github.com/rust-lang/crates.io-index)" = "a165d606cf084741d4ac3a28fb6e9b1eb0bd31f6cd999098cfddb0b2ab381dc0"
"checksum bitflags 1.2.1 (registry+https://github.com/rust-lang/crates.io-index)" = "cf1de2fe8c75bc145a2f577add951f8134889b4795d47466a54a5c846d691693"
"checksum byteorder 1.3.4 (registry+https://github.com/rust-lang/crates.io-index)" = "08c48aae112d48ed9f069b33538ea9e3e90aa263cfa3d1c24309612b1f7472de"
"checksum cfg-if 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)" = "4785bdd1c96b2a846b2bd7cc02e86b6b3dbf14e7e53446c4f54c92a361040822"
"checksum compiler_builtins 0.1.26 (registry+https://github.com/rust-lang/crates.io-index)" = "036b035e9ebcd705affece16319223d19f229e2358be6e3b7b094e57193312e6"
"checksum linked_list_allocator 0.8.1 (registry+https://github.com/rust-lang/crates.io-index)" = "5825aea823c659d0fdcdbe8c9b78baf56f3a10365d783db874f6d360df72626f"
"checksum log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)" = "14b6052be84e6b71ab17edffc2eeabf5c2c3ae1fdb464aae35ac50c67a44e1f7"
"checksum managed 0.7.1 (registry+https://github.com/rust-lang/crates.io-index)" = "fdcec5e97041c7f0f1c5b7d93f12e57293c831c646f4cc7a5db59460c7ea8de6"
"checksum pin-utils 0.1.0-alpha.4 (registry+https://github.com/rust-lang/crates.io-index)" = "5894c618ce612a3fa23881b152b608bafb8c56cfc22f434a3ba3120b40f7b587"
"checksum r0 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)" = "bd7a31eed1591dcbc95d92ad7161908e72f4677f8fabf2a32ca49b4237cbf211"
"checksum smoltcp 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)" = "0fe46639fd2ec79eadf8fe719f237a7a0bd4dac5d957f1ca5bbdbc1c3c39e53a"
"checksum vcell 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)" = "876e32dcadfe563a4289e994f7cb391197f362b6315dc45e8ba4aa6f564a4b3c"
"checksum volatile-register 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "0d67cb4616d99b940db1d6bd28844ff97108b498a6ca850e5b6191a532063286"

107
experiments/src/main.rs
View File

@ -1,14 +1,17 @@
#![no_std]
#![no_main]
extern crate alloc;
use core::mem::transmute;
use alloc::collections::BTreeMap;
use libcortex_a9::mutex::Mutex;
use libboard_zynq::{
print, println,
self as zynq, clocks::Clocks, clocks::source::{ClockSource, ArmPll, IoPll},
smoltcp::{
wire::{EthernetAddress, IpAddress, IpCidr},
iface::{NeighborCache, EthernetInterfaceBuilder},
iface::{NeighborCache, EthernetInterfaceBuilder, Routes},
time::Instant,
socket::SocketSet,
socket::{TcpSocket, TcpSocketBuffer},
@ -18,7 +21,7 @@ use libsupport_zynq::{
ram, alloc::{vec, vec::Vec},
boot,
};
use libasync::task;
use libasync::{smoltcp::{Sockets, TcpStream}, task};
const HWADDR: [u8; 6] = [0, 0x23, 0xde, 0xea, 0xbe, 0xef];
@ -152,78 +155,94 @@ pub fn main_core0() {
let mut rx_descs = (0..RX_LEN)
.map(|_| zynq::eth::rx::DescEntry::zeroed())
.collect::<Vec<_>>();
let mut rx_buffers = vec![[0u8; zynq::eth::MTU]; RX_LEN];
let mut rx_buffers = vec![zynq::eth::Buffer::new(); RX_LEN];
// Number of transmission buffers (minimum is two because with
// one, duplicate packet transmission occurs)
const TX_LEN: usize = 8;
let mut tx_descs = (0..TX_LEN)
.map(|_| zynq::eth::tx::DescEntry::zeroed())
.collect::<Vec<_>>();
let mut tx_buffers = vec![[0u8; zynq::eth::MTU]; TX_LEN];
let mut tx_buffers = vec![zynq::eth::Buffer::new(); TX_LEN];
let eth = eth.start_rx(&mut rx_descs, &mut rx_buffers);
//let mut eth = eth.start_tx(&mut tx_descs, &mut tx_buffers);
// let mut eth = eth.start_tx(&mut tx_descs, &mut tx_buffers);
let mut eth = eth.start_tx(
// HACK
unsafe { transmute(tx_descs.as_mut_slice()) },
unsafe { transmute(tx_buffers.as_mut_slice()) },
);
// loop {
// match eth.recv_next() {
// Ok(None) => {},
// Ok(Some(pkt)) => println!("received {} bytes", pkt.len()),
// Err(e) => println!("e: {:?}", e),
// }
// }
println!("iface...");
let ethernet_addr = EthernetAddress(HWADDR);
// IP stack
let local_addr = IpAddress::v4(192, 168, 1, 51);
let mut ip_addrs = [IpCidr::new(local_addr, 24)];
let mut routes_storage = vec![None; 4];
let routes = Routes::new(/*BTreeMap::new()*/ &mut routes_storage[..]);
let mut neighbor_storage = vec![None; 256];
let neighbor_cache = NeighborCache::new(&mut neighbor_storage[..]);
let mut iface = EthernetInterfaceBuilder::new(&mut eth)
.ethernet_addr(ethernet_addr)
.ip_addrs(&mut ip_addrs[..])
.routes(routes)
.neighbor_cache(neighbor_cache)
.finalize();
let mut sockets_storage = [
None, None, None, None,
None, None, None, None
];
let mut sockets = SocketSet::new(&mut sockets_storage[..]);
// taken from example code for smoltcp
let mut tcp_server_rx_data = vec![0; 512 * 1024];
let mut tcp_server_tx_data = vec![0; 512 * 1024];
let tcp_rx_buffer = TcpSocketBuffer::new(&mut tcp_server_rx_data[..]);
let tcp_tx_buffer = TcpSocketBuffer::new(&mut tcp_server_tx_data[..]);
let tcp_socket = TcpSocket::new(tcp_rx_buffer, tcp_tx_buffer);
let tcp_handle = sockets.add(tcp_socket);
// TODO: compare with ps7_init
println!("Sockets init...");
Sockets::init(32);
/// `chargen`
const TCP_PORT: u16 = 19;
let mut time = 0u32;
loop {
time += 1;
let timestamp = Instant::from_millis(time);
match iface.poll(&mut sockets, timestamp) {
Ok(_) => {},
Err(e) => {
println!("poll error: {}", e);
}
task::spawn(async {
println!("listening");
while let socket = TcpStream::listen(TCP_PORT, 2048, 2048).await {
println!("got connection");
task::spawn(async {
println!("spawned for connection");
// while l
drop(socket);
});
}
println!("done?");
});
// (mostly) taken from smoltcp example: TCP echo server
let mut socket = sockets.get::<TcpSocket>(tcp_handle);
if !socket.is_open() {
socket.listen(TCP_PORT).unwrap()
}
if socket.may_recv() && socket.can_send() {
socket.recv(|buf| {
let len = buf.len().min(4096);
let buffer = buf[..len].iter().cloned().collect::<Vec<_>>();
(len, buffer)
})
.and_then(|buffer| socket.send_slice(&buffer[..]))
.map(|_| {})
.unwrap_or_else(|e| println!("tcp: {:?}", e));
Sockets::run(&mut iface);
// let mut time = 0u32;
// loop {
// time += 1;
// let timestamp = Instant::from_millis(time);
}
}
// match iface.poll(&mut sockets, timestamp) {
// Ok(_) => {},
// Err(e) => {
// println!("poll error: {}", e);
// }
// }
// // (mostly) taken from smoltcp example: TCP echo server
// let mut socket = sockets.get::<TcpSocket>(tcp_handle);
// if !socket.is_open() {
// socket.listen(TCP_PORT).unwrap()
// }
// if socket.may_recv() && socket.can_send() {
// socket.recv(|buf| {
// let len = buf.len().min(4096);
// let buffer = buf[..len].iter().cloned().collect::<Vec<_>>();
// (len, buffer)
// })
// .and_then(|buffer| socket.send_slice(&buffer[..]))
// .map(|_| {})
// .unwrap_or_else(|e| println!("tcp: {:?}", e));
// }
// }
// #[allow(unreachable_code)]
// drop(tx_descs);

5
libasync/Cargo.toml
View File

@ -11,3 +11,8 @@ pin-utils = "0.1.0-alpha.4"
libcortex_a9 = { path = "../libcortex_a9" }
# TODO: delete
libboard_zynq = { path = "../libboard_zynq" }
[dependencies.smoltcp]
version = "0.6"
default-features = false
features = ["alloc"]

2
libasync/src/lib.rs
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@ -4,3 +4,5 @@ extern crate alloc;
pub mod task;
pub mod executor;
pub mod smoltcp;

90
libasync/src/smoltcp/mod.rs Normal file
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@ -0,0 +1,90 @@
use core::{
cell::RefCell,
task::Waker,
};
use alloc::{vec, vec::Vec};
use smoltcp::{
iface::EthernetInterface,
phy::Device,
socket::{
SocketSet, SocketHandle,
TcpSocketBuffer, TcpSocket,
},
time::Instant,
};
use libboard_zynq::println;
use crate::task;
mod tcp_stream;
pub use tcp_stream::TcpStream;
static mut SOCKETS: Option<Sockets> = None;
pub struct Sockets {
sockets: RefCell<SocketSet<'static, 'static, 'static>>,
wakers: RefCell<Vec<Waker>>,
}
impl Sockets {
pub fn init(max_sockets: usize) {
println!("initializing {} sockets", max_sockets);
let mut sockets_storage = Vec::with_capacity(max_sockets);
for _ in 0..max_sockets {
sockets_storage.push(None);
}
let sockets = RefCell::new(SocketSet::new(sockets_storage));
let wakers = RefCell::new(Vec::new());
let instance = Sockets {
sockets,
wakers,
};
println!("sockets initialized");
unsafe { SOCKETS = Some(instance); }
}
/// Block and run executor indefinitely while polling the smoltcp
/// iface
pub fn run<'b, 'c, 'e, D: for<'d> Device<'d>>(iface: &mut EthernetInterface<'b, 'c, 'e, D>) {
task::block_on(async {
loop {
Self::instance().poll(iface);
task::r#yield().await;
}
});
}
pub(crate) fn instance() -> &'static Self {
unsafe { SOCKETS.as_ref().expect("Sockets") }
}
fn poll<'b, 'c, 'e, D: for<'d> Device<'d>>(&self, iface: &mut EthernetInterface<'b, 'c, 'e, D>) {
// TODO:
let instant = Instant::from_millis(0);
let processed = {
let mut sockets = self.sockets.borrow_mut();
let r = iface.poll(&mut sockets, instant);
if r != Ok(false) { println!("poll: {:?}", r); }
match r {
Ok(processed) => processed,
Err(_) => true,
}
};
if processed {
let mut wakers = self.wakers.borrow_mut();
println!("wakeup of {}", wakers.len());
for waker in wakers.drain(..) {
waker.wake();
}
}
}
/// TODO: this was called through eg. TcpStream, another poll()
/// might want to send packets before sleeping for an interrupt.
pub(crate) fn register_waker(waker: Waker) {
println!("register_waker");
Self::instance().wakers.borrow_mut()
.push(waker);
}
}

91
libasync/src/smoltcp/tcp_stream.rs Normal file
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@ -0,0 +1,91 @@
use core::{
cell::{RefCell, UnsafeCell},
future::Future,
mem::MaybeUninit,
pin::Pin,
sync::atomic::{AtomicBool, Ordering},
task::{Context, Poll},
};
use alloc::vec;
use smoltcp::{
iface::EthernetInterface,
phy::Device,
socket::{
SocketSet, SocketHandle, SocketRef,
TcpSocketBuffer, TcpSocket,
},
time::Instant,
};
use libboard_zynq::println;
use super::Sockets;
pub struct TcpStream {
handle: SocketHandle,
}
impl TcpStream {
fn new(rx_bufsize: usize, tx_bufsize: usize) -> Self {
let rx_buffer = TcpSocketBuffer::new(vec![0u8; rx_bufsize]);
let tx_buffer = TcpSocketBuffer::new(vec![0u8; tx_bufsize]);
let socket = TcpSocket::new(rx_buffer, tx_buffer);
let handle = Sockets::instance().sockets.borrow_mut()
.add(socket);
TcpStream { handle }
}
fn with_socket<F, R>(&self, f: F) -> R
where
F: FnOnce(SocketRef<TcpSocket>) -> R,
{
println!("with_socket");
let mut sockets = Sockets::instance().sockets.borrow_mut();
let socket_ref = sockets.get::<TcpSocket>(self.handle);
f(socket_ref)
}
pub async fn listen(port: u16, rx_bufsize: usize, tx_bufsize: usize) -> Self {
struct Accept {
stream: Option<TcpStream>,
}
impl Future for Accept {
type Output = TcpStream;
fn poll(mut self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Self::Output> {
let is_active = self.stream.as_ref()
.map(|s| s.with_socket(|s| s.is_active()))
.unwrap_or(true);
println!("is_active={:?}", is_active);
if is_active {
Poll::Ready(self.stream.take().unwrap())
} else {
println!("register_waker");
Sockets::register_waker(cx.waker().clone());
//asm::sev();
Poll::Pending
}
}
}
let stream = Self::new(rx_bufsize, tx_bufsize);
stream.with_socket(|mut s| s.listen(port)).expect("listen");
println!("listening on {}", port);
Accept {
stream: Some(stream),
}.await
}
pub async fn recv(&self) {
// self.socket();
}
}
impl Drop for TcpStream {
fn drop(&mut self) {
// TODO: verify
println!("tcpstream drop");
Sockets::instance().sockets.borrow_mut()
.remove(self.handle);
}
}