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WIP embassy-net v2

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This commit is contained in:
Dario Nieuwenhuis 2022-05-23 03:50:43 +02:00
parent 36a1f20364
commit a5aea995a8
17 changed files with 660 additions and 734 deletions
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3
embassy-net/Cargo.toml
View file

@ -20,6 +20,7 @@ std = []
defmt = ["dep:defmt", "smoltcp/defmt"]
tcp = ["smoltcp/socket-tcp"]
dns = ["smoltcp/socket-dns"]
dhcpv4 = ["medium-ethernet", "smoltcp/socket-dhcpv4"]
medium-ethernet = ["smoltcp/medium-ethernet"]
medium-ip = ["smoltcp/medium-ip"]
@ -49,6 +50,8 @@ atomic-pool = "0.2.1"
[dependencies.smoltcp]
version = "0.8.0"
git = "https://github.com/smoltcp-rs/smoltcp"
rev = "ed0cf16750a42f30e31fcaf5347915592924b1e3"
default-features = false
features = [
"proto-ipv4",

55
embassy-net/src/config/dhcp.rs
View file

@ -1,55 +0,0 @@
use heapless::Vec;
use smoltcp::iface::SocketHandle;
use smoltcp::socket::{Dhcpv4Event, Dhcpv4Socket};
use smoltcp::time::Instant;
use super::*;
use crate::device::LinkState;
use crate::Interface;
pub struct DhcpConfigurator {
handle: Option<SocketHandle>,
}
impl DhcpConfigurator {
pub fn new() -> Self {
Self { handle: None }
}
}
impl Configurator for DhcpConfigurator {
fn poll(&mut self, iface: &mut Interface, _timestamp: Instant) -> Event {
if self.handle.is_none() {
let handle = iface.add_socket(Dhcpv4Socket::new());
self.handle = Some(handle)
}
let link_up = iface.device_mut().device.link_state() == LinkState::Up;
let socket = iface.get_socket::<Dhcpv4Socket>(self.handle.unwrap());
if !link_up {
socket.reset();
return Event::Deconfigured;
}
match socket.poll() {
None => Event::NoChange,
Some(Dhcpv4Event::Deconfigured) => Event::Deconfigured,
Some(Dhcpv4Event::Configured(config)) => {
let mut dns_servers = Vec::new();
for s in &config.dns_servers {
if let Some(addr) = s {
dns_servers.push(addr.clone()).unwrap();
}
}
Event::Configured(Config {
address: config.address,
gateway: config.router,
dns_servers,
})
}
}
}
}

35
embassy-net/src/config/mod.rs
View file

@ -1,35 +0,0 @@
use heapless::Vec;
use smoltcp::time::Instant;
use smoltcp::wire::{Ipv4Address, Ipv4Cidr};
use crate::Interface;
mod statik;
pub use statik::StaticConfigurator;
#[cfg(feature = "dhcpv4")]
mod dhcp;
#[cfg(feature = "dhcpv4")]
pub use dhcp::DhcpConfigurator;
/// Return value for the `Configurator::poll` function
#[derive(Debug, Clone)]
pub enum Event {
/// No change has occured to the configuration.
NoChange,
/// Configuration has been lost (for example, DHCP lease has expired)
Deconfigured,
/// Configuration has been newly acquired, or modified.
Configured(Config),
}
#[derive(Debug, Clone, PartialEq, Eq)]
pub struct Config {
pub address: Ipv4Cidr,
pub gateway: Option<Ipv4Address>,
pub dns_servers: Vec<Ipv4Address, 3>,
}
pub trait Configurator {
fn poll(&mut self, iface: &mut Interface, timestamp: Instant) -> Event;
}

29
embassy-net/src/config/statik.rs
View file

@ -1,29 +0,0 @@
use smoltcp::time::Instant;
use super::*;
use crate::Interface;
pub struct StaticConfigurator {
config: Config,
returned: bool,
}
impl StaticConfigurator {
pub fn new(config: Config) -> Self {
Self {
config,
returned: false,
}
}
}
impl Configurator for StaticConfigurator {
fn poll(&mut self, _iface: &mut Interface, _timestamp: Instant) -> Event {
if self.returned {
Event::NoChange
} else {
self.returned = true;
Event::Configured(self.config.clone())
}
}
}

50
embassy-net/src/device.rs
View file

@ -12,24 +12,50 @@ pub enum LinkState {
Up,
}
// 'static required due to the "fake GAT" in smoltcp::phy::Device.
// https://github.com/smoltcp-rs/smoltcp/pull/572
pub trait Device {
fn is_transmit_ready(&mut self) -> bool;
fn transmit(&mut self, pkt: PacketBuf);
fn receive(&mut self) -> Option<PacketBuf>;
fn register_waker(&mut self, waker: &Waker);
fn capabilities(&mut self) -> DeviceCapabilities;
fn capabilities(&self) -> DeviceCapabilities;
fn link_state(&mut self) -> LinkState;
fn ethernet_address(&self) -> [u8; 6];
}
pub struct DeviceAdapter {
pub device: &'static mut dyn Device,
impl<T: ?Sized + Device> Device for &'static mut T {
fn is_transmit_ready(&mut self) -> bool {
T::is_transmit_ready(self)
}
fn transmit(&mut self, pkt: PacketBuf) {
T::transmit(self, pkt)
}
fn receive(&mut self) -> Option<PacketBuf> {
T::receive(self)
}
fn register_waker(&mut self, waker: &Waker) {
T::register_waker(self, waker)
}
fn capabilities(&self) -> DeviceCapabilities {
T::capabilities(self)
}
fn link_state(&mut self) -> LinkState {
T::link_state(self)
}
fn ethernet_address(&self) -> [u8; 6] {
T::ethernet_address(self)
}
}
pub struct DeviceAdapter<D: Device> {
pub device: D,
caps: DeviceCapabilities,
}
impl DeviceAdapter {
pub(crate) fn new(device: &'static mut dyn Device) -> Self {
impl<D: Device> DeviceAdapter<D> {
pub(crate) fn new(device: D) -> Self {
Self {
caps: device.capabilities(),
device,
@ -37,16 +63,16 @@ impl DeviceAdapter {
}
}
impl<'a> SmolDevice<'a> for DeviceAdapter {
impl<'a, D: Device + 'static> SmolDevice<'a> for DeviceAdapter<D> {
type RxToken = RxToken;
type TxToken = TxToken<'a>;
type TxToken = TxToken<'a, D>;
fn receive(&'a mut self) -> Option<(Self::RxToken, Self::TxToken)> {
let tx_pkt = PacketBox::new(Packet::new())?;
let rx_pkt = self.device.receive()?;
let rx_token = RxToken { pkt: rx_pkt };
let tx_token = TxToken {
device: self.device,
device: &mut self.device,
pkt: tx_pkt,
};
@ -61,7 +87,7 @@ impl<'a> SmolDevice<'a> for DeviceAdapter {
let tx_pkt = PacketBox::new(Packet::new())?;
Some(TxToken {
device: self.device,
device: &mut self.device,
pkt: tx_pkt,
})
}
@ -85,12 +111,12 @@ impl smoltcp::phy::RxToken for RxToken {
}
}
pub struct TxToken<'a> {
device: &'a mut dyn Device,
pub struct TxToken<'a, D: Device> {
device: &'a mut D,
pkt: PacketBox,
}
impl<'a> smoltcp::phy::TxToken for TxToken<'a> {
impl<'a, D: Device> smoltcp::phy::TxToken for TxToken<'a, D> {
fn consume<R, F>(self, _timestamp: SmolInstant, len: usize, f: F) -> smoltcp::Result<R>
where
F: FnOnce(&mut [u8]) -> smoltcp::Result<R>,

10
embassy-net/src/lib.rs
View file

@ -5,20 +5,13 @@
// This mod MUST go first, so that the others see its macros.
pub(crate) mod fmt;
mod config;
mod device;
mod packet_pool;
mod stack;
#[cfg(feature = "dhcpv4")]
pub use config::DhcpConfigurator;
pub use config::{Config, Configurator, Event as ConfigEvent, StaticConfigurator};
pub use device::{Device, LinkState};
pub use packet_pool::{Packet, PacketBox, PacketBoxExt, PacketBuf, MTU};
pub use stack::{
config, ethernet_address, init, is_config_up, is_init, is_link_up, run, StackResources,
};
pub use stack::{Config, ConfigStrategy, Stack, StackResources};
#[cfg(feature = "tcp")]
pub mod tcp;
@ -30,4 +23,3 @@ pub use smoltcp::time::Instant as SmolInstant;
#[cfg(feature = "medium-ethernet")]
pub use smoltcp::wire::{EthernetAddress, HardwareAddress};
pub use smoltcp::wire::{IpAddress, IpCidr, Ipv4Address, Ipv4Cidr};
pub type Interface = smoltcp::iface::Interface<'static, device::DeviceAdapter>;

401
embassy-net/src/stack.rs
View file

@ -1,13 +1,18 @@
use core::cell::RefCell;
use core::cell::UnsafeCell;
use core::future::Future;
use core::task::Context;
use core::task::Poll;
use embassy::blocking_mutex::ThreadModeMutex;
use embassy::time::{Instant, Timer};
use embassy::waitqueue::WakerRegistration;
use futures::future::poll_fn;
use futures::pin_mut;
use smoltcp::iface::InterfaceBuilder;
use smoltcp::iface::SocketStorage;
use heapless::Vec;
#[cfg(feature = "dhcpv4")]
use smoltcp::iface::SocketHandle;
use smoltcp::iface::{Interface, InterfaceBuilder};
use smoltcp::iface::{SocketSet, SocketStorage};
#[cfg(feature = "dhcpv4")]
use smoltcp::socket::dhcpv4;
use smoltcp::time::Instant as SmolInstant;
use smoltcp::wire::{IpCidr, Ipv4Address, Ipv4Cidr};
@ -18,10 +23,7 @@ use smoltcp::phy::{Device as _, Medium};
#[cfg(feature = "medium-ethernet")]
use smoltcp::wire::{EthernetAddress, HardwareAddress, IpAddress};
use crate::config::Configurator;
use crate::config::Event;
use crate::device::{Device, DeviceAdapter, LinkState};
use crate::{Config, Interface};
const LOCAL_PORT_MIN: u16 = 1025;
const LOCAL_PORT_MAX: u16 = 65535;
@ -51,24 +53,144 @@ impl<const ADDR: usize, const SOCK: usize, const NEIGHBOR: usize>
}
}
static STACK: ThreadModeMutex<RefCell<Option<Stack>>> = ThreadModeMutex::new(RefCell::new(None));
pub(crate) struct Stack {
pub iface: Interface,
link_up: bool,
config: Option<Config>,
next_local_port: u16,
configurator: &'static mut dyn Configurator,
waker: WakerRegistration,
#[derive(Debug, Clone, PartialEq, Eq)]
pub struct Config {
pub address: Ipv4Cidr,
pub gateway: Option<Ipv4Address>,
pub dns_servers: Vec<Ipv4Address, 3>,
}
impl Stack {
pub(crate) fn with<R>(f: impl FnOnce(&mut Stack) -> R) -> R {
let mut stack = STACK.borrow().borrow_mut();
let stack = stack.as_mut().unwrap();
f(stack)
pub enum ConfigStrategy {
Static(Config),
#[cfg(feature = "dhcpv4")]
Dhcp,
}
pub struct Stack<D: Device> {
pub(crate) socket: UnsafeCell<SocketStack>,
inner: UnsafeCell<Inner<D>>,
}
struct Inner<D: Device> {
device: DeviceAdapter<D>,
link_up: bool,
config: Option<Config>,
#[cfg(feature = "dhcpv4")]
dhcp_socket: Option<SocketHandle>,
}
pub(crate) struct SocketStack {
pub(crate) sockets: SocketSet<'static>,
pub(crate) iface: Interface<'static>,
pub(crate) waker: WakerRegistration,
next_local_port: u16,
}
unsafe impl<D: Device> Send for Stack<D> {}
impl<D: Device + 'static> Stack<D> {
pub fn new<const ADDR: usize, const SOCK: usize, const NEIGH: usize>(
device: D,
config: ConfigStrategy,
resources: &'static mut StackResources<ADDR, SOCK, NEIGH>,
random_seed: u64,
) -> Self {
#[cfg(feature = "medium-ethernet")]
let medium = device.capabilities().medium;
#[cfg(feature = "medium-ethernet")]
let ethernet_addr = if medium == Medium::Ethernet {
device.ethernet_address()
} else {
[0, 0, 0, 0, 0, 0]
};
let mut device = DeviceAdapter::new(device);
let mut b = InterfaceBuilder::new();
b = b.ip_addrs(&mut resources.addresses[..]);
b = b.random_seed(random_seed);
#[cfg(feature = "medium-ethernet")]
if medium == Medium::Ethernet {
b = b.hardware_addr(HardwareAddress::Ethernet(EthernetAddress(ethernet_addr)));
b = b.neighbor_cache(NeighborCache::new(&mut resources.neighbor_cache[..]));
b = b.routes(Routes::new(&mut resources.routes[..]));
}
let iface = b.finalize(&mut device);
let sockets = SocketSet::new(&mut resources.sockets[..]);
let next_local_port =
(random_seed % (LOCAL_PORT_MAX - LOCAL_PORT_MIN) as u64) as u16 + LOCAL_PORT_MIN;
let mut inner = Inner {
device,
link_up: false,
config: None,
#[cfg(feature = "dhcpv4")]
dhcp_socket: None,
};
let mut socket = SocketStack {
sockets,
iface,
waker: WakerRegistration::new(),
next_local_port,
};
match config {
ConfigStrategy::Static(config) => inner.apply_config(&mut socket, config),
#[cfg(feature = "dhcpv4")]
ConfigStrategy::Dhcp => {
let handle = socket.sockets.add(smoltcp::socket::dhcpv4::Socket::new());
inner.dhcp_socket = Some(handle);
}
}
Self {
socket: UnsafeCell::new(socket),
inner: UnsafeCell::new(inner),
}
}
/// SAFETY: must not call reentrantly.
unsafe fn with<R>(&self, f: impl FnOnce(&SocketStack, &Inner<D>) -> R) -> R {
f(&*self.socket.get(), &*self.inner.get())
}
/// SAFETY: must not call reentrantly.
unsafe fn with_mut<R>(&self, f: impl FnOnce(&mut SocketStack, &mut Inner<D>) -> R) -> R {
f(&mut *self.socket.get(), &mut *self.inner.get())
}
pub fn ethernet_address(&self) -> [u8; 6] {
unsafe { self.with(|_s, i| i.device.device.ethernet_address()) }
}
pub fn is_link_up(&self) -> bool {
unsafe { self.with(|_s, i| i.link_up) }
}
pub fn is_config_up(&self) -> bool {
unsafe { self.with(|_s, i| i.config.is_some()) }
}
pub fn config(&self) -> Option<Config> {
unsafe { self.with(|_s, i| i.config.clone()) }
}
pub async fn run(&self) -> ! {
poll_fn(|cx| {
unsafe { self.with_mut(|s, i| i.poll(cx, s)) }
Poll::<()>::Pending
})
.await;
unreachable!()
}
}
impl SocketStack {
#[allow(clippy::absurd_extreme_comparisons)]
pub fn get_local_port(&mut self) -> u16 {
let res = self.next_local_port;
@ -79,60 +201,68 @@ impl Stack {
};
res
}
}
pub(crate) fn wake(&mut self) {
self.waker.wake()
}
fn poll_configurator(&mut self, timestamp: SmolInstant) {
impl<D: Device + 'static> Inner<D> {
fn apply_config(&mut self, s: &mut SocketStack, config: Config) {
#[cfg(feature = "medium-ethernet")]
let medium = self.iface.device().capabilities().medium;
let medium = self.device.capabilities().medium;
match self.configurator.poll(&mut self.iface, timestamp) {
Event::NoChange => {}
Event::Configured(config) => {
debug!("Acquired IP configuration:");
debug!("Acquired IP configuration:");
debug!(" IP address: {}", config.address);
set_ipv4_addr(&mut self.iface, config.address);
debug!(" IP address: {}", config.address);
self.set_ipv4_addr(s, config.address);
#[cfg(feature = "medium-ethernet")]
if medium == Medium::Ethernet {
if let Some(gateway) = config.gateway {
debug!(" Default gateway: {}", gateway);
self.iface
.routes_mut()
.add_default_ipv4_route(gateway)
.unwrap();
} else {
debug!(" Default gateway: None");
self.iface.routes_mut().remove_default_ipv4_route();
}
}
for (i, s) in config.dns_servers.iter().enumerate() {
debug!(" DNS server {}: {}", i, s);
}
self.config = Some(config)
}
Event::Deconfigured => {
debug!("Lost IP configuration");
set_ipv4_addr(&mut self.iface, Ipv4Cidr::new(Ipv4Address::UNSPECIFIED, 0));
#[cfg(feature = "medium-ethernet")]
if medium == Medium::Ethernet {
self.iface.routes_mut().remove_default_ipv4_route();
}
self.config = None
#[cfg(feature = "medium-ethernet")]
if medium == Medium::Ethernet {
if let Some(gateway) = config.gateway {
debug!(" Default gateway: {}", gateway);
s.iface
.routes_mut()
.add_default_ipv4_route(gateway)
.unwrap();
} else {
debug!(" Default gateway: None");
s.iface.routes_mut().remove_default_ipv4_route();
}
}
for (i, s) in config.dns_servers.iter().enumerate() {
debug!(" DNS server {}: {}", i, s);
}
self.config = Some(config)
}
fn poll(&mut self, cx: &mut Context<'_>) {
self.iface.device_mut().device.register_waker(cx.waker());
self.waker.register(cx.waker());
#[allow(unused)] // used only with dhcp
fn unapply_config(&mut self, s: &mut SocketStack) {
#[cfg(feature = "medium-ethernet")]
let medium = self.device.capabilities().medium;
debug!("Lost IP configuration");
self.set_ipv4_addr(s, Ipv4Cidr::new(Ipv4Address::UNSPECIFIED, 0));
#[cfg(feature = "medium-ethernet")]
if medium == Medium::Ethernet {
s.iface.routes_mut().remove_default_ipv4_route();
}
self.config = None
}
fn set_ipv4_addr(&mut self, s: &mut SocketStack, cidr: Ipv4Cidr) {
s.iface.update_ip_addrs(|addrs| {
let dest = addrs.iter_mut().next().unwrap();
*dest = IpCidr::Ipv4(cidr);
});
}
fn poll(&mut self, cx: &mut Context<'_>, s: &mut SocketStack) {
self.device.device.register_waker(cx.waker());
s.waker.register(cx.waker());
let timestamp = instant_to_smoltcp(Instant::now());
if self.iface.poll(timestamp).is_err() {
if s.iface
.poll(timestamp, &mut self.device, &mut s.sockets)
.is_err()
{
// If poll() returns error, it may not be done yet, so poll again later.
cx.waker().wake_by_ref();
return;
@ -140,18 +270,49 @@ impl Stack {
// Update link up
let old_link_up = self.link_up;
self.link_up = self.iface.device_mut().device.link_state() == LinkState::Up;
self.link_up = self.device.device.link_state() == LinkState::Up;
// Print when changed
if old_link_up != self.link_up {
info!("link_up = {:?}", self.link_up);
}
if old_link_up || self.link_up {
self.poll_configurator(timestamp)
}
#[cfg(feature = "dhcpv4")]
if let Some(dhcp_handle) = self.dhcp_socket {
let socket = s.sockets.get_mut::<dhcpv4::Socket>(dhcp_handle);
if let Some(poll_at) = self.iface.poll_at(timestamp) {
if self.link_up {
match socket.poll() {
None => {}
Some(dhcpv4::Event::Deconfigured) => self.unapply_config(s),
Some(dhcpv4::Event::Configured(config)) => {
let mut dns_servers = Vec::new();
for s in &config.dns_servers {
if let Some(addr) = s {
dns_servers.push(addr.clone()).unwrap();
}
}
self.apply_config(
s,
Config {
address: config.address,
gateway: config.router,
dns_servers,
},
)
}
}
} else if old_link_up {
socket.reset();
self.unapply_config(s);
}
}
//if old_link_up || self.link_up {
// self.poll_configurator(timestamp)
//}
if let Some(poll_at) = s.iface.poll_at(timestamp, &mut s.sockets) {
let t = Timer::at(instant_from_smoltcp(poll_at));
pin_mut!(t);
if t.poll(cx).is_ready() {
@ -161,100 +322,6 @@ impl Stack {
}
}
fn set_ipv4_addr(iface: &mut Interface, cidr: Ipv4Cidr) {
iface.update_ip_addrs(|addrs| {
let dest = addrs.iter_mut().next().unwrap();
*dest = IpCidr::Ipv4(cidr);
});
}
/// Initialize embassy_net.
/// This function must be called from thread mode.
pub fn init<const ADDR: usize, const SOCK: usize, const NEIGH: usize>(
device: &'static mut dyn Device,
configurator: &'static mut dyn Configurator,
resources: &'static mut StackResources<ADDR, SOCK, NEIGH>,
) {
#[cfg(feature = "medium-ethernet")]
let medium = device.capabilities().medium;
#[cfg(feature = "medium-ethernet")]
let ethernet_addr = if medium == Medium::Ethernet {
device.ethernet_address()
} else {
[0, 0, 0, 0, 0, 0]
};
let mut b = InterfaceBuilder::new(DeviceAdapter::new(device), &mut resources.sockets[..]);
b = b.ip_addrs(&mut resources.addresses[..]);
#[cfg(feature = "medium-ethernet")]
if medium == Medium::Ethernet {
b = b.hardware_addr(HardwareAddress::Ethernet(EthernetAddress(ethernet_addr)));
b = b.neighbor_cache(NeighborCache::new(&mut resources.neighbor_cache[..]));
b = b.routes(Routes::new(&mut resources.routes[..]));
}
let iface = b.finalize();
let local_port = loop {
let mut res = [0u8; 2];
rand(&mut res);
let port = u16::from_le_bytes(res);
if (LOCAL_PORT_MIN..=LOCAL_PORT_MAX).contains(&port) {
break port;
}
};
let stack = Stack {
iface,
link_up: false,
config: None,
configurator,
next_local_port: local_port,
waker: WakerRegistration::new(),
};
*STACK.borrow().borrow_mut() = Some(stack);
}
pub fn ethernet_address() -> [u8; 6] {
STACK
.borrow()
.borrow()
.as_ref()
.unwrap()
.iface
.device()
.device
.ethernet_address()
}
pub fn is_init() -> bool {
STACK.borrow().borrow().is_some()
}
pub fn is_link_up() -> bool {
STACK.borrow().borrow().as_ref().unwrap().link_up
}
pub fn is_config_up() -> bool {
STACK.borrow().borrow().as_ref().unwrap().config.is_some()
}
pub fn config() -> Option<Config> {
STACK.borrow().borrow().as_ref().unwrap().config.clone()
}
pub async fn run() -> ! {
futures::future::poll_fn(|cx| {
Stack::with(|stack| stack.poll(cx));
Poll::<()>::Pending
})
.await;
unreachable!()
}
fn instant_to_smoltcp(instant: Instant) -> SmolInstant {
SmolInstant::from_millis(instant.as_millis() as i64)
}
@ -262,11 +329,3 @@ fn instant_to_smoltcp(instant: Instant) -> SmolInstant {
fn instant_from_smoltcp(instant: SmolInstant) -> Instant {
Instant::from_millis(instant.total_millis() as u64)
}
extern "Rust" {
fn _embassy_rand(buf: &mut [u8]);
}
fn rand(buf: &mut [u8]) {
unsafe { _embassy_rand(buf) }
}

305
embassy-net/src/tcp.rs
View file

@ -1,13 +1,16 @@
use core::cell::UnsafeCell;
use core::future::Future;
use core::marker::PhantomData;
use core::mem;
use core::task::Poll;
use futures::future::poll_fn;
use smoltcp::iface::{Context as SmolContext, SocketHandle};
use smoltcp::socket::TcpSocket as SyncTcpSocket;
use smoltcp::socket::{TcpSocketBuffer, TcpState};
use smoltcp::iface::{Interface, SocketHandle};
use smoltcp::socket::tcp;
use smoltcp::time::Duration;
use smoltcp::wire::IpEndpoint;
use smoltcp::wire::IpListenEndpoint;
use crate::stack::SocketStack;
use crate::Device;
use super::stack::Stack;
@ -42,78 +45,68 @@ pub enum AcceptError {
}
pub struct TcpSocket<'a> {
handle: SocketHandle,
ghost: PhantomData<&'a mut [u8]>,
io: TcpIo<'a>,
}
impl<'a> Unpin for TcpSocket<'a> {}
pub struct TcpReader<'a> {
handle: SocketHandle,
ghost: PhantomData<&'a mut [u8]>,
io: TcpIo<'a>,
}
impl<'a> Unpin for TcpReader<'a> {}
pub struct TcpWriter<'a> {
handle: SocketHandle,
ghost: PhantomData<&'a mut [u8]>,
io: TcpIo<'a>,
}
impl<'a> Unpin for TcpWriter<'a> {}
impl<'a> TcpSocket<'a> {
pub fn new(rx_buffer: &'a mut [u8], tx_buffer: &'a mut [u8]) -> Self {
let handle = Stack::with(|stack| {
let rx_buffer: &'static mut [u8] = unsafe { mem::transmute(rx_buffer) };
let tx_buffer: &'static mut [u8] = unsafe { mem::transmute(tx_buffer) };
stack.iface.add_socket(SyncTcpSocket::new(
TcpSocketBuffer::new(rx_buffer),
TcpSocketBuffer::new(tx_buffer),
))
});
pub fn new<D: Device>(
stack: &'a Stack<D>,
rx_buffer: &'a mut [u8],
tx_buffer: &'a mut [u8],
) -> Self {
// safety: not accessed reentrantly.
let s = unsafe { &mut *stack.socket.get() };
let rx_buffer: &'static mut [u8] = unsafe { mem::transmute(rx_buffer) };
let tx_buffer: &'static mut [u8] = unsafe { mem::transmute(tx_buffer) };
let handle = s.sockets.add(tcp::Socket::new(
tcp::SocketBuffer::new(rx_buffer),
tcp::SocketBuffer::new(tx_buffer),
));
Self {
handle,
ghost: PhantomData,
io: TcpIo {
stack: &stack.socket,
handle,
},
}
}
pub fn split(&mut self) -> (TcpReader<'_>, TcpWriter<'_>) {
(
TcpReader {
handle: self.handle,
ghost: PhantomData,
},
TcpWriter {
handle: self.handle,
ghost: PhantomData,
},
)
(TcpReader { io: self.io }, TcpWriter { io: self.io })
}
pub async fn connect<T>(&mut self, remote_endpoint: T) -> Result<(), ConnectError>
where
T: Into<IpEndpoint>,
{
let local_port = Stack::with(|stack| stack.get_local_port());
match with_socket(self.handle, |s, cx| {
s.connect(cx, remote_endpoint, local_port)
}) {
// safety: not accessed reentrantly.
let local_port = unsafe { &mut *self.io.stack.get() }.get_local_port();
// safety: not accessed reentrantly.
match unsafe {
self.io
.with_mut(|s, i| s.connect(i, remote_endpoint, local_port))
} {
Ok(()) => {}
Err(smoltcp::Error::Illegal) => return Err(ConnectError::InvalidState),
Err(smoltcp::Error::Unaddressable) => return Err(ConnectError::NoRoute),
// smoltcp returns no errors other than the above.
Err(_) => unreachable!(),
Err(tcp::ConnectError::InvalidState) => return Err(ConnectError::InvalidState),
Err(tcp::ConnectError::Unaddressable) => return Err(ConnectError::NoRoute),
}
futures::future::poll_fn(|cx| {
with_socket(self.handle, |s, _| match s.state() {
TcpState::Closed | TcpState::TimeWait => {
futures::future::poll_fn(|cx| unsafe {
self.io.with_mut(|s, _| match s.state() {
tcp::State::Closed | tcp::State::TimeWait => {
Poll::Ready(Err(ConnectError::ConnectionReset))
}
TcpState::Listen => unreachable!(),
TcpState::SynSent | TcpState::SynReceived => {
tcp::State::Listen => unreachable!(),
tcp::State::SynSent | tcp::State::SynReceived => {
s.register_send_waker(cx.waker());
Poll::Pending
}
@ -125,19 +118,18 @@ impl<'a> TcpSocket<'a> {
pub async fn accept<T>(&mut self, local_endpoint: T) -> Result<(), AcceptError>
where
T: Into<IpEndpoint>,
T: Into<IpListenEndpoint>,
{
match with_socket(self.handle, |s, _| s.listen(local_endpoint)) {
// safety: not accessed reentrantly.
match unsafe { self.io.with_mut(|s, _| s.listen(local_endpoint)) } {
Ok(()) => {}
Err(smoltcp::Error::Illegal) => return Err(AcceptError::InvalidState),
Err(smoltcp::Error::Unaddressable) => return Err(AcceptError::InvalidPort),
// smoltcp returns no errors other than the above.
Err(_) => unreachable!(),
Err(tcp::ListenError::InvalidState) => return Err(AcceptError::InvalidState),
Err(tcp::ListenError::Unaddressable) => return Err(AcceptError::InvalidPort),
}
futures::future::poll_fn(|cx| {
with_socket(self.handle, |s, _| match s.state() {
TcpState::Listen | TcpState::SynSent | TcpState::SynReceived => {
futures::future::poll_fn(|cx| unsafe {
self.io.with_mut(|s, _| match s.state() {
tcp::State::Listen | tcp::State::SynSent | tcp::State::SynReceived => {
s.register_send_waker(cx.waker());
Poll::Pending
}
@ -148,65 +140,122 @@ impl<'a> TcpSocket<'a> {
}
pub fn set_timeout(&mut self, duration: Option<Duration>) {
with_socket(self.handle, |s, _| s.set_timeout(duration))
unsafe { self.io.with_mut(|s, _| s.set_timeout(duration)) }
}
pub fn set_keep_alive(&mut self, interval: Option<Duration>) {
with_socket(self.handle, |s, _| s.set_keep_alive(interval))
unsafe { self.io.with_mut(|s, _| s.set_keep_alive(interval)) }
}
pub fn set_hop_limit(&mut self, hop_limit: Option<u8>) {
with_socket(self.handle, |s, _| s.set_hop_limit(hop_limit))
unsafe { self.io.with_mut(|s, _| s.set_hop_limit(hop_limit)) }
}
pub fn local_endpoint(&self) -> IpEndpoint {
with_socket(self.handle, |s, _| s.local_endpoint())
pub fn local_endpoint(&self) -> Option<IpEndpoint> {
unsafe { self.io.with(|s, _| s.local_endpoint()) }
}
pub fn remote_endpoint(&self) -> IpEndpoint {
with_socket(self.handle, |s, _| s.remote_endpoint())
pub fn remote_endpoint(&self) -> Option<IpEndpoint> {
unsafe { self.io.with(|s, _| s.remote_endpoint()) }
}
pub fn state(&self) -> TcpState {
with_socket(self.handle, |s, _| s.state())
pub fn state(&self) -> tcp::State {
unsafe { self.io.with(|s, _| s.state()) }
}
pub fn close(&mut self) {
with_socket(self.handle, |s, _| s.close())
unsafe { self.io.with_mut(|s, _| s.close()) }
}
pub fn abort(&mut self) {
with_socket(self.handle, |s, _| s.abort())
unsafe { self.io.with_mut(|s, _| s.abort()) }
}
pub fn may_send(&self) -> bool {
with_socket(self.handle, |s, _| s.may_send())
unsafe { self.io.with(|s, _| s.may_send()) }
}
pub fn may_recv(&self) -> bool {
with_socket(self.handle, |s, _| s.may_recv())
unsafe { self.io.with(|s, _| s.may_recv()) }
}
}
fn with_socket<R>(
handle: SocketHandle,
f: impl FnOnce(&mut SyncTcpSocket, &mut SmolContext) -> R,
) -> R {
Stack::with(|stack| {
let res = {
let (s, cx) = stack.iface.get_socket_and_context::<SyncTcpSocket>(handle);
f(s, cx)
};
stack.wake();
res
})
}
impl<'a> Drop for TcpSocket<'a> {
fn drop(&mut self) {
Stack::with(|stack| {
stack.iface.remove_socket(self.handle);
// safety: not accessed reentrantly.
let s = unsafe { &mut *self.io.stack.get() };
s.sockets.remove(self.io.handle);
}
}
// =======================
#[derive(Copy, Clone)]
pub struct TcpIo<'a> {
stack: &'a UnsafeCell<SocketStack>,
handle: SocketHandle,
}
impl<'d> TcpIo<'d> {
/// SAFETY: must not call reentrantly.
unsafe fn with<R>(&self, f: impl FnOnce(&tcp::Socket, &Interface) -> R) -> R {
let s = &*self.stack.get();
let socket = s.sockets.get::<tcp::Socket>(self.handle);
f(socket, &s.iface)
}
/// SAFETY: must not call reentrantly.
unsafe fn with_mut<R>(&mut self, f: impl FnOnce(&mut tcp::Socket, &mut Interface) -> R) -> R {
let s = &mut *self.stack.get();
let socket = s.sockets.get_mut::<tcp::Socket>(self.handle);
let res = f(socket, &mut s.iface);
s.waker.wake();
res
}
async fn read(&mut self, buf: &mut [u8]) -> Result<usize, Error> {
poll_fn(move |cx| unsafe {
// CAUTION: smoltcp semantics around EOF are different to what you'd expect
// from posix-like IO, so we have to tweak things here.
self.with_mut(|s, _| match s.recv_slice(buf) {
// No data ready
Ok(0) => {
s.register_recv_waker(cx.waker());
Poll::Pending
}
// Data ready!
Ok(n) => Poll::Ready(Ok(n)),
// EOF
Err(tcp::RecvError::Finished) => Poll::Ready(Ok(0)),
// Connection reset. TODO: this can also be timeouts etc, investigate.
Err(tcp::RecvError::InvalidState) => Poll::Ready(Err(Error::ConnectionReset)),
})
})
.await
}
async fn write(&mut self, buf: &[u8]) -> Result<usize, Error> {
poll_fn(move |cx| unsafe {
self.with_mut(|s, _| match s.send_slice(buf) {
// Not ready to send (no space in the tx buffer)
Ok(0) => {
s.register_send_waker(cx.waker());
Poll::Pending
}
// Some data sent
Ok(n) => Poll::Ready(Ok(n)),
// Connection reset. TODO: this can also be timeouts etc, investigate.
Err(tcp::SendError::InvalidState) => Poll::Ready(Err(Error::ConnectionReset)),
})
})
.await
}
async fn flush(&mut self) -> Result<(), Error> {
poll_fn(move |_| {
Poll::Ready(Ok(())) // TODO: Is there a better implementation for this?
})
.await
}
}
@ -226,25 +275,7 @@ impl<'d> embedded_io::asynch::Read for TcpSocket<'d> {
Self: 'a;
fn read<'a>(&'a mut self, buf: &'a mut [u8]) -> Self::ReadFuture<'a> {
poll_fn(move |cx| {
// CAUTION: smoltcp semantics around EOF are different to what you'd expect
// from posix-like IO, so we have to tweak things here.
with_socket(self.handle, |s, _| match s.recv_slice(buf) {
// No data ready
Ok(0) => {
s.register_recv_waker(cx.waker());
Poll::Pending
}
// Data ready!
Ok(n) => Poll::Ready(Ok(n)),
// EOF
Err(smoltcp::Error::Finished) => Poll::Ready(Ok(0)),
// Connection reset. TODO: this can also be timeouts etc, investigate.
Err(smoltcp::Error::Illegal) => Poll::Ready(Err(Error::ConnectionReset)),
// smoltcp returns no errors other than the above.
Err(_) => unreachable!(),
})
})
self.io.read(buf)
}
}
@ -254,21 +285,7 @@ impl<'d> embedded_io::asynch::Write for TcpSocket<'d> {
Self: 'a;
fn write<'a>(&'a mut self, buf: &'a [u8]) -> Self::WriteFuture<'a> {
poll_fn(move |cx| {
with_socket(self.handle, |s, _| match s.send_slice(buf) {
// Not ready to send (no space in the tx buffer)
Ok(0) => {
s.register_send_waker(cx.waker());
Poll::Pending
}
// Some data sent
Ok(n) => Poll::Ready(Ok(n)),
// Connection reset. TODO: this can also be timeouts etc, investigate.
Err(smoltcp::Error::Illegal) => Poll::Ready(Err(Error::ConnectionReset)),
// smoltcp returns no errors other than the above.
Err(_) => unreachable!(),
})
})
self.io.write(buf)
}
type FlushFuture<'a> = impl Future<Output = Result<(), Self::Error>>
@ -276,9 +293,7 @@ impl<'d> embedded_io::asynch::Write for TcpSocket<'d> {
Self: 'a;
fn flush<'a>(&'a mut self) -> Self::FlushFuture<'a> {
poll_fn(move |_| {
Poll::Ready(Ok(())) // TODO: Is there a better implementation for this?
})
self.io.flush()
}
}
@ -292,25 +307,7 @@ impl<'d> embedded_io::asynch::Read for TcpReader<'d> {
Self: 'a;
fn read<'a>(&'a mut self, buf: &'a mut [u8]) -> Self::ReadFuture<'a> {
poll_fn(move |cx| {
// CAUTION: smoltcp semantics around EOF are different to what you'd expect
// from posix-like IO, so we have to tweak things here.
with_socket(self.handle, |s, _| match s.recv_slice(buf) {
// No data ready
Ok(0) => {
s.register_recv_waker(cx.waker());
Poll::Pending
}
// Data ready!
Ok(n) => Poll::Ready(Ok(n)),
// EOF
Err(smoltcp::Error::Finished) => Poll::Ready(Ok(0)),
// Connection reset. TODO: this can also be timeouts etc, investigate.
Err(smoltcp::Error::Illegal) => Poll::Ready(Err(Error::ConnectionReset)),
// smoltcp returns no errors other than the above.
Err(_) => unreachable!(),
})
})
self.io.read(buf)
}
}
@ -324,21 +321,7 @@ impl<'d> embedded_io::asynch::Write for TcpWriter<'d> {
Self: 'a;
fn write<'a>(&'a mut self, buf: &'a [u8]) -> Self::WriteFuture<'a> {
poll_fn(move |cx| {
with_socket(self.handle, |s, _| match s.send_slice(buf) {
// Not ready to send (no space in the tx buffer)
Ok(0) => {
s.register_send_waker(cx.waker());
Poll::Pending
}
// Some data sent
Ok(n) => Poll::Ready(Ok(n)),
// Connection reset. TODO: this can also be timeouts etc, investigate.
Err(smoltcp::Error::Illegal) => Poll::Ready(Err(Error::ConnectionReset)),
// smoltcp returns no errors other than the above.
Err(_) => unreachable!(),
})
})
self.io.write(buf)
}
type FlushFuture<'a> = impl Future<Output = Result<(), Self::Error>>
@ -346,8 +329,6 @@ impl<'d> embedded_io::asynch::Write for TcpWriter<'d> {
Self: 'a;
fn flush<'a>(&'a mut self) -> Self::FlushFuture<'a> {
poll_fn(move |_| {
Poll::Ready(Ok(())) // TODO: Is there a better implementation for this?
})
self.io.flush()
}
}

2
embassy-stm32/src/eth/v1/mod.rs
View file

@ -319,7 +319,7 @@ impl<'d, T: Instance, P: PHY, const TX: usize, const RX: usize> Device
WAKER.register(waker);
}
fn capabilities(&mut self) -> DeviceCapabilities {
fn capabilities(&self) -> DeviceCapabilities {
let mut caps = DeviceCapabilities::default();
caps.max_transmission_unit = MTU;
caps.max_burst_size = Some(TX.min(RX));

2
embassy-stm32/src/eth/v2/mod.rs
View file

@ -253,7 +253,7 @@ impl<'d, T: Instance, P: PHY, const TX: usize, const RX: usize> Device
WAKER.register(waker);
}
fn capabilities(&mut self) -> DeviceCapabilities {
fn capabilities(&self) -> DeviceCapabilities {
let mut caps = DeviceCapabilities::default();
caps.max_transmission_unit = MTU;
caps.max_burst_size = Some(TX.min(RX));

75
examples/nrf/src/bin/usb_ethernet.rs
View file

@ -12,8 +12,9 @@ use embassy::channel::Channel;
use embassy::executor::Spawner;
use embassy::util::Forever;
use embassy_net::tcp::TcpSocket;
use embassy_net::{PacketBox, PacketBoxExt, PacketBuf};
use embassy_net::{PacketBox, PacketBoxExt, PacketBuf, Stack, StackResources};
use embassy_nrf::pac;
use embassy_nrf::rng::Rng;
use embassy_nrf::usb::Driver;
use embassy_nrf::Peripherals;
use embassy_nrf::{interrupt, peripherals};
@ -27,6 +28,14 @@ use panic_probe as _;
type MyDriver = Driver<'static, peripherals::USBD>;
macro_rules! forever {
($val:expr) => {{
type T = impl Sized;
static FOREVER: Forever<T> = Forever::new();
FOREVER.put_with(move || $val)
}};
}
#[embassy::task]
async fn usb_task(mut device: UsbDevice<'static, MyDriver>) -> ! {
device.run().await
@ -72,8 +81,8 @@ async fn usb_ncm_tx_task(mut class: Sender<'static, MyDriver>) {
}
#[embassy::task]
async fn net_task() -> ! {
embassy_net::run().await
async fn net_task(stack: &'static Stack<Device>) -> ! {
stack.run().await
}
#[embassy::main]
@ -114,8 +123,7 @@ async fn main(spawner: Spawner, p: Peripherals) {
control_buf: [u8; 128],
serial_state: State<'static>,
}
static RESOURCES: Forever<Resources> = Forever::new();
let res = RESOURCES.put(Resources {
let res: &mut Resources = forever!(Resources {
device_descriptor: [0; 256],
config_descriptor: [0; 256],
bos_descriptor: [0; 256],
@ -158,28 +166,31 @@ async fn main(spawner: Spawner, p: Peripherals) {
unwrap!(spawner.spawn(usb_ncm_rx_task(rx)));
unwrap!(spawner.spawn(usb_ncm_tx_task(tx)));
// Init embassy-net
struct NetResources {
resources: embassy_net::StackResources<1, 2, 8>,
configurator: embassy_net::DhcpConfigurator,
//configurator: StaticConfigurator,
device: Device,
}
static NET_RESOURCES: Forever<NetResources> = Forever::new();
let res = NET_RESOURCES.put(NetResources {
resources: embassy_net::StackResources::new(),
configurator: embassy_net::DhcpConfigurator::new(),
//configurator: embassy_net::StaticConfigurator::new(embassy_net::Config {
// address: Ipv4Cidr::new(Ipv4Address::new(10, 42, 0, 1), 24),
// dns_servers: Default::default(),
// gateway: None,
//}),
device: Device {
mac_addr: our_mac_addr,
},
});
embassy_net::init(&mut res.device, &mut res.configurator, &mut res.resources);
unwrap!(spawner.spawn(net_task()));
let config = embassy_net::ConfigStrategy::Dhcp;
//let config = embassy_net::ConfigStrategy::Static(embassy_net::Config {
// address: Ipv4Cidr::new(Ipv4Address::new(10, 42, 0, 61), 24),
// dns_servers: Vec::new(),
// gateway: Some(Ipv4Address::new(10, 42, 0, 1)),
//});
// Generate random seed
let mut rng = Rng::new(p.RNG, interrupt::take!(RNG));
let mut seed = [0; 8];
rng.blocking_fill_bytes(&mut seed);
let seed = u64::from_le_bytes(seed);
// Init network stack
let device = Device {
mac_addr: our_mac_addr,
};
let stack = &*forever!(Stack::new(
device,
config,
forever!(StackResources::<1, 2, 8>::new()),
seed
));
unwrap!(spawner.spawn(net_task(stack)));
// And now we can use it!
@ -188,7 +199,7 @@ async fn main(spawner: Spawner, p: Peripherals) {
let mut buf = [0; 4096];
loop {
let mut socket = TcpSocket::new(&mut rx_buffer, &mut tx_buffer);
let mut socket = TcpSocket::new(stack, &mut rx_buffer, &mut tx_buffer);
socket.set_timeout(Some(embassy_net::SmolDuration::from_secs(10)));
info!("Listening on TCP:1234...");
@ -246,7 +257,7 @@ impl embassy_net::Device for Device {
}
}
fn capabilities(&mut self) -> embassy_net::DeviceCapabilities {
fn capabilities(&self) -> embassy_net::DeviceCapabilities {
let mut caps = embassy_net::DeviceCapabilities::default();
caps.max_transmission_unit = 1514; // 1500 IP + 14 ethernet header
caps.medium = embassy_net::Medium::Ethernet;
@ -271,9 +282,3 @@ impl embassy_net::Device for Device {
self.mac_addr
}
}
#[no_mangle]
fn _embassy_rand(buf: &mut [u8]) {
// TODO
buf.fill(0x42)
}

51
examples/std/src/bin/net.rs
View file

@ -4,23 +4,24 @@ use clap::Parser;
use embassy::executor::{Executor, Spawner};
use embassy::util::Forever;
use embassy_net::tcp::TcpSocket;
use embassy_net::{
Config, Configurator, DhcpConfigurator, Ipv4Address, Ipv4Cidr, StackResources,
StaticConfigurator,
};
use embassy_net::{ConfigStrategy, Ipv4Address, Ipv4Cidr, Stack, StackResources};
use embedded_io::asynch::Write;
use heapless::Vec;
use log::*;
use rand_core::{OsRng, RngCore};
#[path = "../tuntap.rs"]
mod tuntap;
use crate::tuntap::TunTapDevice;
static DEVICE: Forever<TunTapDevice> = Forever::new();
static CONFIG_STATIC: Forever<StaticConfigurator> = Forever::new();
static CONFIG_DYNAMIC: Forever<DhcpConfigurator> = Forever::new();
static NET_RESOURCES: Forever<StackResources<1, 2, 8>> = Forever::new();
macro_rules! forever {
($val:expr) => {{
type T = impl Sized;
static FOREVER: Forever<T> = Forever::new();
FOREVER.put_with(move || $val)
}};
}
#[derive(Parser)]
#[clap(version = "1.0")]
@ -34,8 +35,8 @@ struct Opts {
}
#[embassy::task]
async fn net_task() {
embassy_net::run().await
async fn net_task(stack: &'static Stack<TunTapDevice>) -> ! {
stack.run().await
}
#[embassy::task]
@ -46,28 +47,36 @@ async fn main_task(spawner: Spawner) {
let device = TunTapDevice::new(&opts.tap).unwrap();
// Choose between dhcp or static ip
let config: &'static mut dyn Configurator = if opts.static_ip {
CONFIG_STATIC.put(StaticConfigurator::new(Config {
let config = if opts.static_ip {
ConfigStrategy::Static(embassy_net::Config {
address: Ipv4Cidr::new(Ipv4Address::new(192, 168, 69, 2), 24),
dns_servers: Vec::new(),
gateway: Some(Ipv4Address::new(192, 168, 69, 1)),
}))
})
} else {
CONFIG_DYNAMIC.put(DhcpConfigurator::new())
ConfigStrategy::Dhcp
};
let net_resources = StackResources::new();
// Generate random seed
let mut seed = [0; 8];
OsRng.fill_bytes(&mut seed);
let seed = u64::from_le_bytes(seed);
// Init network stack
embassy_net::init(DEVICE.put(device), config, NET_RESOURCES.put(net_resources));
let stack = &*forever!(Stack::new(
device,
config,
forever!(StackResources::<1, 2, 8>::new()),
seed
));
// Launch network task
spawner.spawn(net_task()).unwrap();
spawner.spawn(net_task(stack)).unwrap();
// Then we can use it!
let mut rx_buffer = [0; 4096];
let mut tx_buffer = [0; 4096];
let mut socket = TcpSocket::new(&mut rx_buffer, &mut tx_buffer);
let mut socket = TcpSocket::new(stack, &mut rx_buffer, &mut tx_buffer);
socket.set_timeout(Some(embassy_net::SmolDuration::from_secs(10)));
@ -88,12 +97,6 @@ async fn main_task(spawner: Spawner) {
}
}
#[no_mangle]
fn _embassy_rand(buf: &mut [u8]) {
use rand_core::{OsRng, RngCore};
OsRng.fill_bytes(buf);
}
static EXECUTOR: Forever<Executor> = Forever::new();
fn main() {

2
examples/std/src/tuntap.rs
View file

@ -209,7 +209,7 @@ impl Device for TunTapDevice {
}
}
fn capabilities(&mut self) -> DeviceCapabilities {
fn capabilities(&self) -> DeviceCapabilities {
let mut caps = DeviceCapabilities::default();
caps.max_transmission_unit = self.device.get_ref().mtu;
caps

7
examples/stm32f7/Cargo.toml
View file

@ -8,7 +8,7 @@ resolver = "2"
[dependencies]
embassy = { version = "0.1.0", path = "../../embassy", features = ["defmt", "defmt-timestamp-uptime"] }
embassy-stm32 = { version = "0.1.0", path = "../../embassy-stm32", features = ["nightly", "defmt", "net", "stm32f767zi", "unstable-pac", "time-driver-any", "exti"] }
embassy-net = { path = "../../embassy-net", features = ["defmt", "tcp", "medium-ethernet", "pool-16"] }
embassy-net = { path = "../../embassy-net", features = ["defmt", "tcp", "dhcpv4", "medium-ethernet", "pool-16"] }
embedded-io = { version = "0.3.0", features = ["async"] }
defmt = "0.3"
@ -24,8 +24,3 @@ nb = "1.0.0"
rand_core = "0.6.3"
critical-section = "0.2.3"
embedded-storage = "0.3.0"
[dependencies.smoltcp]
version = "0.8.0"
default-features = false
features = ["defmt"]

175
examples/stm32f7/src/bin/eth.rs
View file

@ -2,130 +2,123 @@
#![no_main]
#![feature(type_alias_impl_trait)]
use cortex_m_rt::entry;
use defmt::*;
use embassy::executor::{Executor, Spawner};
use embassy::executor::Spawner;
use embassy::time::{Duration, Timer};
use embassy::util::Forever;
use embassy_net::tcp::TcpSocket;
use embassy_net::{Config as NetConfig, Ipv4Address, Ipv4Cidr, StackResources, StaticConfigurator};
use embassy_net::{Ipv4Address, Stack, StackResources};
use embassy_stm32::eth::generic_smi::GenericSMI;
use embassy_stm32::eth::{Ethernet, State};
use embassy_stm32::interrupt;
use embassy_stm32::peripherals::ETH;
use embassy_stm32::peripherals::RNG;
use embassy_stm32::rng::Rng;
use embassy_stm32::time::U32Ext;
use embassy_stm32::Config;
use embassy_stm32::{interrupt, Peripherals};
use embedded_io::asynch::Write;
use heapless::Vec;
use defmt_rtt as _; // global logger
use panic_probe as _;
use rand_core::RngCore;
macro_rules! forever {
($val:expr) => {{
type T = impl Sized;
static FOREVER: Forever<T> = Forever::new();
FOREVER.put_with(move || $val)
}};
}
type Device = Ethernet<'static, ETH, GenericSMI, 4, 4>;
#[embassy::task]
async fn main_task(
device: &'static mut Ethernet<'static, ETH, GenericSMI, 4, 4>,
config: &'static mut StaticConfigurator,
spawner: Spawner,
) {
let net_resources = NET_RESOURCES.put(StackResources::new());
// Init network stack
embassy_net::init(device, config, net_resources);
// Launch network task
unwrap!(spawner.spawn(net_task()));
info!("Network task initialized");
// Then we can use it!
let mut rx_buffer = [0; 1024];
let mut tx_buffer = [0; 1024];
let mut socket = TcpSocket::new(&mut rx_buffer, &mut tx_buffer);
socket.set_timeout(Some(embassy_net::SmolDuration::from_secs(10)));
let remote_endpoint = (Ipv4Address::new(192, 168, 0, 10), 8000);
let r = socket.connect(remote_endpoint).await;
if let Err(e) = r {
info!("connect error: {:?}", e);
return;
}
info!("connected!");
loop {
let r = socket.write_all(b"Hello\n").await;
if let Err(e) = r {
info!("write error: {:?}", e);
return;
}
Timer::after(Duration::from_secs(1)).await;
}
async fn net_task(stack: &'static Stack<Device>) -> ! {
stack.run().await
}
#[embassy::task]
async fn net_task() {
embassy_net::run().await
}
#[no_mangle]
fn _embassy_rand(buf: &mut [u8]) {
use rand_core::RngCore;
critical_section::with(|_| unsafe {
unwrap!(RNG_INST.as_mut()).fill_bytes(buf);
});
}
static mut RNG_INST: Option<Rng<RNG>> = None;
static EXECUTOR: Forever<Executor> = Forever::new();
static STATE: Forever<State<'static, ETH, 4, 4>> = Forever::new();
static ETH: Forever<Ethernet<'static, ETH, GenericSMI, 4, 4>> = Forever::new();
static CONFIG: Forever<StaticConfigurator> = Forever::new();
static NET_RESOURCES: Forever<StackResources<1, 2, 8>> = Forever::new();
fn config() -> Config {
let mut config = Config::default();
config.rcc.sys_ck = Some(200.mhz().into());
config
}
#[entry]
fn main() -> ! {
#[embassy::main(config = "config()")]
async fn main(spawner: Spawner, p: Peripherals) -> ! {
info!("Hello World!");
info!("Setup RCC...");
let p = embassy_stm32::init(config());
let rng = Rng::new(p.RNG);
unsafe {
RNG_INST.replace(rng);
}
// Generate random seed.
let mut rng = Rng::new(p.RNG);
let mut seed = [0; 8];
rng.fill_bytes(&mut seed);
let seed = u64::from_le_bytes(seed);
let eth_int = interrupt::take!(ETH);
let mac_addr = [0x00, 0x00, 0xDE, 0xAD, 0xBE, 0xEF];
let state = STATE.put(State::new());
let eth = unsafe {
ETH.put(Ethernet::new(
state, p.ETH, eth_int, p.PA1, p.PA2, p.PC1, p.PA7, p.PC4, p.PC5, p.PG13, p.PB13,
p.PG11, GenericSMI, mac_addr, 0,
))
let device = unsafe {
Ethernet::new(
forever!(State::new()),
p.ETH,
eth_int,
p.PA1,
p.PA2,
p.PC1,
p.PA7,
p.PC4,
p.PC5,
p.PG13,
p.PB13,
p.PG11,
GenericSMI,
mac_addr,
0,
)
};
let config = StaticConfigurator::new(NetConfig {
address: Ipv4Cidr::new(Ipv4Address::new(192, 168, 0, 61), 24),
dns_servers: Vec::new(),
gateway: Some(Ipv4Address::new(192, 168, 0, 1)),
});
let config = embassy_net::ConfigStrategy::Dhcp;
//let config = embassy_net::ConfigStrategy::Static(embassy_net::Config {
// address: Ipv4Cidr::new(Ipv4Address::new(10, 42, 0, 61), 24),
// dns_servers: Vec::new(),
// gateway: Some(Ipv4Address::new(10, 42, 0, 1)),
//});
let config = CONFIG.put(config);
// Init network stack
let stack = &*forever!(Stack::new(
device,
config,
forever!(StackResources::<1, 2, 8>::new()),
seed
));
let executor = EXECUTOR.put(Executor::new());
// Launch network task
unwrap!(spawner.spawn(net_task(&stack)));
executor.run(move |spawner| {
unwrap!(spawner.spawn(main_task(eth, config, spawner)));
})
info!("Network task initialized");
// Then we can use it!
let mut rx_buffer = [0; 1024];
let mut tx_buffer = [0; 1024];
loop {
let mut socket = TcpSocket::new(&stack, &mut rx_buffer, &mut tx_buffer);
socket.set_timeout(Some(embassy_net::SmolDuration::from_secs(10)));
let remote_endpoint = (Ipv4Address::new(10, 42, 0, 1), 8000);
info!("connecting...");
let r = socket.connect(remote_endpoint).await;
if let Err(e) = r {
info!("connect error: {:?}", e);
continue;
}
info!("connected!");
loop {
let r = socket.write_all(b"Hello\n").await;
if let Err(e) = r {
info!("write error: {:?}", e);
return;
}
Timer::after(Duration::from_secs(1)).await;
}
}
}

7
examples/stm32h7/Cargo.toml
View file

@ -8,7 +8,7 @@ resolver = "2"
[dependencies]
embassy = { version = "0.1.0", path = "../../embassy", features = ["defmt", "defmt-timestamp-uptime", "unstable-traits"] }
embassy-stm32 = { version = "0.1.0", path = "../../embassy-stm32", features = ["nightly", "defmt", "stm32h743bi", "net", "time-driver-any", "exti", "unstable-pac", "unstable-traits"] }
embassy-net = { path = "../../embassy-net", features = ["defmt", "tcp", "medium-ethernet", "pool-16"] }
embassy-net = { path = "../../embassy-net", features = ["defmt", "tcp", "dhcpv4", "medium-ethernet", "pool-16"] }
embedded-io = { version = "0.3.0", features = ["async"] }
defmt = "0.3"
@ -28,11 +28,6 @@ micromath = "2.0.0"
stm32-fmc = "0.2.4"
embedded-storage = "0.3.0"
[dependencies.smoltcp]
version = "0.8.0"
default-features = false
features = ["defmt"]
# cargo build/run
[profile.dev]
codegen-units = 1

185
examples/stm32h7/src/bin/eth.rs
View file

@ -2,90 +2,40 @@
#![no_main]
#![feature(type_alias_impl_trait)]
use defmt_rtt as _; // global logger
use panic_probe as _;
use cortex_m_rt::entry;
use defmt::*;
use embassy::executor::{Executor, Spawner};
use embassy::executor::Spawner;
use embassy::time::{Duration, Timer};
use embassy::util::Forever;
use embassy_net::tcp::TcpSocket;
use embassy_net::{Config as NetConfig, Ipv4Address, Ipv4Cidr, StackResources, StaticConfigurator};
use embassy_net::{Ipv4Address, Stack, StackResources};
use embassy_stm32::eth::generic_smi::GenericSMI;
use embassy_stm32::eth::{Ethernet, State};
use embassy_stm32::interrupt;
use embassy_stm32::peripherals::ETH;
use embassy_stm32::peripherals::RNG;
use embassy_stm32::rng::Rng;
use embassy_stm32::time::U32Ext;
use embassy_stm32::Config;
use embassy_stm32::{interrupt, Peripherals};
use embedded_io::asynch::Write;
use heapless::Vec;
use defmt_rtt as _; // global logger
use panic_probe as _;
use rand_core::RngCore;
macro_rules! forever {
($val:expr) => {{
type T = impl Sized;
static FOREVER: Forever<T> = Forever::new();
FOREVER.put_with(move || $val)
}};
}
type Device = Ethernet<'static, ETH, GenericSMI, 4, 4>;
#[embassy::task]
async fn main_task(
device: &'static mut Ethernet<'static, ETH, GenericSMI, 4, 4>,
config: &'static mut StaticConfigurator,
spawner: Spawner,
) {
let net_resources = NET_RESOURCES.put(StackResources::new());
// Init network stack
embassy_net::init(device, config, net_resources);
// Launch network task
unwrap!(spawner.spawn(net_task()));
info!("Network task initialized");
// Then we can use it!
let mut rx_buffer = [0; 1024];
let mut tx_buffer = [0; 1024];
let mut socket = TcpSocket::new(&mut rx_buffer, &mut tx_buffer);
socket.set_timeout(Some(embassy_net::SmolDuration::from_secs(10)));
let remote_endpoint = (Ipv4Address::new(192, 168, 0, 10), 8000);
let r = socket.connect(remote_endpoint).await;
if let Err(e) = r {
info!("connect error: {:?}", e);
return;
}
info!("connected!");
loop {
let r = socket.write_all(b"Hello\n").await;
if let Err(e) = r {
info!("write error: {:?}", e);
return;
}
Timer::after(Duration::from_secs(1)).await;
}
async fn net_task(stack: &'static Stack<Device>) -> ! {
stack.run().await
}
#[embassy::task]
async fn net_task() {
embassy_net::run().await
}
#[no_mangle]
fn _embassy_rand(buf: &mut [u8]) {
use rand_core::RngCore;
critical_section::with(|_| unsafe {
unwrap!(RNG_INST.as_mut()).fill_bytes(buf);
});
}
static mut RNG_INST: Option<Rng<RNG>> = None;
static EXECUTOR: Forever<Executor> = Forever::new();
static STATE: Forever<State<'static, ETH, 4, 4>> = Forever::new();
static ETH: Forever<Ethernet<'static, ETH, GenericSMI, 4, 4>> = Forever::new();
static CONFIG: Forever<StaticConfigurator> = Forever::new();
static NET_RESOURCES: Forever<StackResources<1, 2, 8>> = Forever::new();
#[allow(unused)]
pub fn config() -> Config {
let mut config = Config::default();
config.rcc.sys_ck = Some(400.mhz().into());
@ -94,40 +44,83 @@ pub fn config() -> Config {
config
}
#[entry]
fn main() -> ! {
#[embassy::main(config = "config()")]
async fn main(spawner: Spawner, p: Peripherals) -> ! {
info!("Hello World!");
info!("Setup RCC...");
let p = embassy_stm32::init(config());
let rng = Rng::new(p.RNG);
unsafe {
RNG_INST.replace(rng);
}
// Generate random seed.
let mut rng = Rng::new(p.RNG);
let mut seed = [0; 8];
rng.fill_bytes(&mut seed);
let seed = u64::from_le_bytes(seed);
let eth_int = interrupt::take!(ETH);
let mac_addr = [0x10; 6];
let state = STATE.put(State::new());
let eth = unsafe {
ETH.put(Ethernet::new(
state, p.ETH, eth_int, p.PA1, p.PA2, p.PC1, p.PA7, p.PC4, p.PC5, p.PG13, p.PB13,
p.PG11, GenericSMI, mac_addr, 0,
))
let mac_addr = [0x00, 0x00, 0xDE, 0xAD, 0xBE, 0xEF];
let device = unsafe {
Ethernet::new(
forever!(State::new()),
p.ETH,
eth_int,
p.PA1,
p.PA2,
p.PC1,
p.PA7,
p.PC4,
p.PC5,
p.PG13,
p.PB13,
p.PG11,
GenericSMI,
mac_addr,
0,
)
};
let config = StaticConfigurator::new(NetConfig {
address: Ipv4Cidr::new(Ipv4Address::new(192, 168, 0, 61), 24),
dns_servers: Vec::new(),
gateway: Some(Ipv4Address::new(192, 168, 0, 1)),
});
let config = embassy_net::ConfigStrategy::Dhcp;
//let config = embassy_net::ConfigStrategy::Static(embassy_net::Config {
// address: Ipv4Cidr::new(Ipv4Address::new(10, 42, 0, 61), 24),
// dns_servers: Vec::new(),
// gateway: Some(Ipv4Address::new(10, 42, 0, 1)),
//});
let config = CONFIG.put(config);
// Init network stack
let stack = &*forever!(Stack::new(
device,
config,
forever!(StackResources::<1, 2, 8>::new()),
seed
));
let executor = EXECUTOR.put(Executor::new());
// Launch network task
unwrap!(spawner.spawn(net_task(&stack)));
executor.run(move |spawner| {
unwrap!(spawner.spawn(main_task(eth, config, spawner)));
})
info!("Network task initialized");
// Then we can use it!
let mut rx_buffer = [0; 1024];
let mut tx_buffer = [0; 1024];
loop {
let mut socket = TcpSocket::new(&stack, &mut rx_buffer, &mut tx_buffer);
socket.set_timeout(Some(embassy_net::SmolDuration::from_secs(10)));
let remote_endpoint = (Ipv4Address::new(10, 42, 0, 1), 8000);
info!("connecting...");
let r = socket.connect(remote_endpoint).await;
if let Err(e) = r {
info!("connect error: {:?}", e);
continue;
}
info!("connected!");
loop {
let r = socket.write_all(b"Hello\n").await;
if let Err(e) = r {
info!("write error: {:?}", e);
return;
}
Timer::after(Duration::from_secs(1)).await;
}
}
}