Revert "Upgrade smoltcp 0.6.0 -> 0.8.0"

This reverts commit c60de48a30.

artiq/firmware/Cargo.lock

@@ -240,12 +240,6 @@ version = "0.7.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c75de51135344a4f8ed3cfe2720dc27736f7711989703a0b43aadf3753c55577"
 
-[[package]]
-name = "managed"
-version = "0.8.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0ca88d725a0a943b096803bd34e73a4437208b6077654cc4ecb2947a5f91618d"
-
 [[package]]
 name = "memchr"
 version = "2.4.1"
@@ -327,7 +321,7 @@ dependencies = [
  "io",
  "log",
  "logger_artiq",
- "managed 0.7.2",
+ "managed",
  "proto_artiq",
  "riscv",
  "smoltcp",
@@ -371,13 +365,13 @@ checksum = "388a1df253eca08550bef6c72392cfe7c30914bf41df5269b68cbd6ff8f570a3"
 
 [[package]]
 name = "smoltcp"
-version = "0.8.0"
+version = "0.6.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d2308a1657c8db1f5b4993bab4e620bdbe5623bd81f254cf60326767bb243237"
+checksum = "0fe46639fd2ec79eadf8fe719f237a7a0bd4dac5d957f1ca5bbdbc1c3c39e53a"
 dependencies = [
  "bitflags",
  "byteorder",
- "managed 0.8.0",
+ "managed",
 ]
 
 [[package]]

artiq/firmware/bootloader/Cargo.toml

@@ -16,5 +16,5 @@ build_misoc = { path = "../libbuild_misoc" }
 byteorder = { version = "1.0", default-features = false }
 crc = { version = "1.7", default-features = false }
 board_misoc = { path = "../libboard_misoc", features = ["uart_console", "smoltcp"] }
-smoltcp = { version = "0.8.0", default-features = false, features = ["medium-ethernet", "proto-ipv4", "proto-ipv6", "socket-tcp"] }
+smoltcp = { version = "0.6.0", default-features = false, features = ["ethernet", "proto-ipv4", "proto-ipv6", "socket-tcp"] }
 riscv = { version = "0.6.0", features = ["inline-asm"] }

artiq/firmware/bootloader/main.rs

@@ -18,8 +18,6 @@ use board_misoc::slave_fpga;
 use board_misoc::{clock, ethmac, net_settings};
 use board_misoc::uart_console::Console;
 use riscv::register::{mcause, mepc, mtval};
-use smoltcp::iface::SocketStorage;
-use smoltcp::wire::HardwareAddress;
 
 fn check_integrity() -> bool {
     extern {
@@ -398,9 +396,6 @@ fn network_boot() {
 
     println!("Initializing network...");
 
-    // Assuming only one socket is ever needed by the bootloader.
-    // The smoltcp reuses the listening socket when the connection is established.
-    let mut sockets = [SocketStorage::EMPTY];
     let mut net_device = unsafe { ethmac::EthernetDevice::new() };
     net_device.reset_phy_if_any();
 
@@ -417,15 +412,15 @@ fn network_boot() {
     let mut interface = match net_addresses.ipv6_addr {
         Some(addr) => {
             ip_addrs[2] = IpCidr::new(addr, 0);
-            smoltcp::iface::InterfaceBuilder::new(net_device, &mut sockets[..])
+            smoltcp::iface::EthernetInterfaceBuilder::new(net_device)
-                       .hardware_addr(HardwareAddress::Ethernet(net_addresses.hardware_addr))
+                       .ethernet_addr(net_addresses.hardware_addr)
                        .ip_addrs(&mut ip_addrs[..])
                        .neighbor_cache(neighbor_cache)
                        .finalize()
         }
         None =>
-            smoltcp::iface::InterfaceBuilder::new(net_device, &mut sockets[..])
+            smoltcp::iface::EthernetInterfaceBuilder::new(net_device)
-                       .hardware_addr(HardwareAddress::Ethernet(net_addresses.hardware_addr))
+                       .ethernet_addr(net_addresses.hardware_addr)
                        .ip_addrs(&mut ip_addrs[..2])
                        .neighbor_cache(neighbor_cache)
                        .finalize()
@@ -434,10 +429,14 @@ fn network_boot() {
     let mut rx_storage = [0; 4096];
     let mut tx_storage = [0; 128];
 
+    let mut socket_set_entries: [_; 1] = Default::default();
+    let mut sockets =
+        smoltcp::socket::SocketSet::new(&mut socket_set_entries[..]);
+
     let tcp_rx_buffer = smoltcp::socket::TcpSocketBuffer::new(&mut rx_storage[..]);
     let tcp_tx_buffer = smoltcp::socket::TcpSocketBuffer::new(&mut tx_storage[..]);
     let tcp_socket = smoltcp::socket::TcpSocket::new(tcp_rx_buffer, tcp_tx_buffer);
-    let tcp_handle = interface.add_socket(tcp_socket);
+    let tcp_handle = sockets.add(tcp_socket);
 
     let mut net_conn = NetConn::new();
     let mut boot_time = None;
@@ -447,7 +446,7 @@ fn network_boot() {
     loop {
         let timestamp = clock::get_ms() as i64;
         {
-            let socket = &mut *interface.get_socket::<smoltcp::socket::TcpSocket>(tcp_handle);
+            let socket = &mut *sockets.get::<smoltcp::socket::TcpSocket>(tcp_handle);
 
             match boot_time {
                 None => {
@@ -476,7 +475,7 @@ fn network_boot() {
             }
         }
 
-        match interface.poll(smoltcp::time::Instant::from_millis(timestamp)) {
+        match interface.poll(&mut sockets, smoltcp::time::Instant::from_millis(timestamp)) {
             Ok(_) => (),
             Err(smoltcp::Error::Unrecognized) => (),
             Err(err) => println!("Network error: {}", err)

artiq/firmware/libboard_misoc/Cargo.toml

@@ -15,7 +15,7 @@ build_misoc = { path = "../libbuild_misoc" }
 [dependencies]
 byteorder = { version = "1.0", default-features = false }
 log = { version = "0.4", default-features = false, optional = true }
-smoltcp = { version = "0.8.0", default-features = false, optional = true }
+smoltcp = { version = "0.6.0", default-features = false, optional = true }
 riscv = { version = "0.6.0", features = ["inline-asm"] }
 
 [features]

artiq/firmware/runtime/Cargo.toml

@@ -27,7 +27,7 @@ board_misoc = { path = "../libboard_misoc", features = ["uart_console", "smoltcp
 logger_artiq = { path = "../liblogger_artiq" }
 board_artiq = { path = "../libboard_artiq" }
 proto_artiq = { path = "../libproto_artiq", features = ["log", "alloc"] }
-smoltcp = { version = "0.8.0", default-features = false, features = ["alloc", "medium-ethernet", "proto-ipv4", "proto-ipv6", "socket-tcp"] }
+smoltcp = { version = "0.6.0", default-features = false, features = ["alloc", "ethernet", "proto-ipv4", "proto-ipv6", "socket-tcp"] }
 riscv = { version = "0.6.0", features = ["inline-asm"] }
 
 [dependencies.fringe]

artiq/firmware/runtime/main.rs

@@ -27,7 +27,7 @@ extern crate riscv;
 
 use core::cell::RefCell;
 use core::convert::TryFrom;
-use smoltcp::wire::{IpCidr, HardwareAddress};
+use smoltcp::wire::IpCidr;
 
 use board_misoc::{csr, ident, clock, spiflash, config, net_settings, pmp, boot};
 #[cfg(has_ethmac)]
@@ -123,33 +123,38 @@ fn startup() {
     net_device.reset_phy_if_any();
 
     let net_device = {
-        use smoltcp::phy::Tracer;
+        use smoltcp::time::Instant;
+        use smoltcp::wire::PrettyPrinter;
+        use smoltcp::wire::EthernetFrame;
 
-        // We can't create the function pointer as a separate variable here because the type of
+        fn net_trace_writer(timestamp: Instant, printer: PrettyPrinter<EthernetFrame<&[u8]>>) {
-        // the packet argument Packet isn't accessible and rust's type inference isn't sufficient
+            print!("\x1b[37m[{:6}.{:03}s]\n{}\x1b[0m\n",
-        // to propagate in to a local var.
+                   timestamp.secs(), timestamp.millis(), printer)
-        match config::read_str("net_trace", |r| r.map(|s| s == "1")) {
-            Ok(true) => Tracer::new(net_device, |timestamp, packet| {
-                print!("\x1b[37m[{:6}.{:03}s]\n{}\x1b[0m\n",
-                       timestamp.secs(), timestamp.millis(), packet)
-            }),
-            _ => Tracer::new(net_device, |_, _| {}),
         }
+
+        fn net_trace_silent(_timestamp: Instant, _printer: PrettyPrinter<EthernetFrame<&[u8]>>) {}
+
+        let net_trace_fn: fn(Instant, PrettyPrinter<EthernetFrame<&[u8]>>);
+        match config::read_str("net_trace", |r| r.map(|s| s == "1")) {
+            Ok(true) => net_trace_fn = net_trace_writer,
+            _ => net_trace_fn = net_trace_silent
+        }
+        smoltcp::phy::EthernetTracer::new(net_device, net_trace_fn)
     };
 
     let neighbor_cache =
         smoltcp::iface::NeighborCache::new(alloc::collections::btree_map::BTreeMap::new());
     let net_addresses = net_settings::get_adresses();
     info!("network addresses: {}", net_addresses);
-    let interface = match net_addresses.ipv6_addr {
+    let mut interface = match net_addresses.ipv6_addr {
         Some(addr) => {
             let ip_addrs = [
                 IpCidr::new(net_addresses.ipv4_addr, 0),
                 IpCidr::new(net_addresses.ipv6_ll_addr, 0),
                 IpCidr::new(addr, 0)
             ];
-            smoltcp::iface::InterfaceBuilder::new(net_device, vec![])
+            smoltcp::iface::EthernetInterfaceBuilder::new(net_device)
-                       .hardware_addr(HardwareAddress::Ethernet(net_addresses.hardware_addr))
+                       .ethernet_addr(net_addresses.hardware_addr)
                        .ip_addrs(ip_addrs)
                        .neighbor_cache(neighbor_cache)
                        .finalize()
@@ -159,8 +164,8 @@ fn startup() {
                 IpCidr::new(net_addresses.ipv4_addr, 0),
                 IpCidr::new(net_addresses.ipv6_ll_addr, 0)
             ];
-            smoltcp::iface::InterfaceBuilder::new(net_device, vec![])
+            smoltcp::iface::EthernetInterfaceBuilder::new(net_device)
-                       .hardware_addr(HardwareAddress::Ethernet(net_addresses.hardware_addr))
+                       .ethernet_addr(net_addresses.hardware_addr)
                        .ip_addrs(ip_addrs)
                        .neighbor_cache(neighbor_cache)
                        .finalize()
@@ -179,7 +184,7 @@ fn startup() {
     drtio_routing::interconnect_disable_all();
     let aux_mutex = sched::Mutex::new();
 
-    let mut scheduler = sched::Scheduler::new(interface);
+    let mut scheduler = sched::Scheduler::new();
     let io = scheduler.io();
 
     rtio_mgt::startup(&io, &aux_mutex, &drtio_routing_table, &up_destinations);
@@ -206,7 +211,19 @@ fn startup() {
     let mut net_stats = ethmac::EthernetStatistics::new();
     loop {
         scheduler.run();
-        scheduler.run_network();
+
+        {
+            let sockets = &mut *scheduler.sockets().borrow_mut();
+            loop {
+                let timestamp = smoltcp::time::Instant::from_millis(clock::get_ms() as i64);
+                match interface.poll(sockets, timestamp) {
+                    Ok(true) => (),
+                    Ok(false) => break,
+                    Err(smoltcp::Error::Unrecognized) => (),
+                    Err(err) => debug!("network error: {}", err)
+                }
+            }
+        }
 
         if let Some(_net_stats_diff) = net_stats.update() {
             debug!("ethernet mac:{}", ethmac::EthernetStatistics::new());

artiq/firmware/runtime/sched.rs

@@ -9,13 +9,11 @@ use fringe::generator::{Generator, Yielder, State as GeneratorState};
 use smoltcp::time::Duration;
 use smoltcp::Error as NetworkError;
 use smoltcp::wire::IpEndpoint;
-use smoltcp::iface::{Interface, SocketHandle};
+use smoltcp::socket::{SocketHandle, SocketRef};
 
 use io::{Read, Write};
 use board_misoc::clock;
 use urc::Urc;
-use board_misoc::ethmac::EthernetDevice;
-use smoltcp::phy::Tracer;
 
 #[derive(Fail, Debug)]
 pub enum Error {
@@ -33,6 +31,8 @@ impl From<NetworkError> for Error {
     }
 }
 
+type SocketSet = ::smoltcp::socket::SocketSet<'static, 'static, 'static>;
+
 #[derive(Debug)]
 struct WaitRequest {
     event:   Option<*mut dyn FnMut() -> bool>,
@@ -59,7 +59,7 @@ impl Thread {
     unsafe fn new<F>(io: &Io, stack_size: usize, f: F) -> ThreadHandle
             where F: 'static + FnOnce(Io) + Send {
         let spawned = io.spawned.clone();
-        let network = io.network.clone();
+        let sockets = io.sockets.clone();
 
         // Add a 4k stack guard to the stack of any new threads
         let stack = OwnedStack::new(stack_size + 4096);
@@ -67,8 +67,8 @@ impl Thread {
             generator: Generator::unsafe_new(stack, |yielder, _| {
                 f(Io {
                     yielder: Some(yielder),
-                    spawned,
+                    spawned: spawned,
-                    network
+                    sockets: sockets
                 })
             }),
             waiting_for: WaitRequest {
@@ -115,21 +115,19 @@ impl ThreadHandle {
     }
 }
 
-type Network = Interface<'static, Tracer<EthernetDevice>>;
-
 pub struct Scheduler {
     threads: Vec<ThreadHandle>,
     spawned: Urc<RefCell<Vec<ThreadHandle>>>,
-    network: Urc<RefCell<Network>>,
+    sockets: Urc<RefCell<SocketSet>>,
     run_idx: usize,
 }
 
 impl Scheduler {
-    pub fn new(network: Network) -> Scheduler {
+    pub fn new() -> Scheduler {
         Scheduler {
             threads: Vec::new(),
             spawned: Urc::new(RefCell::new(Vec::new())),
-            network: Urc::new(RefCell::new(network)),
+            sockets: Urc::new(RefCell::new(SocketSet::new(Vec::new()))),
             run_idx: 0,
         }
     }
@@ -138,11 +136,13 @@ impl Scheduler {
         Io {
             yielder: None,
             spawned: self.spawned.clone(),
-            network: self.network.clone()
+            sockets: self.sockets.clone()
         }
     }
 
     pub fn run(&mut self) {
+        self.sockets.borrow_mut().prune();
+
         self.threads.append(&mut *self.spawned.borrow_mut());
         if self.threads.len() == 0 { return }
 
@@ -188,17 +188,8 @@ impl Scheduler {
         }
     }
 
-    pub fn run_network(&mut self) {
+    pub fn sockets(&self) -> &RefCell<SocketSet> {
-        let mut interface = self.network.borrow_mut();
+        &*self.sockets
-        loop {
-            let timestamp = smoltcp::time::Instant::from_millis(clock::get_ms() as i64);
-            match interface.poll(timestamp) {
-                Ok(true) => (),
-                Ok(false) => break,
-                Err(smoltcp::Error::Unrecognized) => (),
-                Err(err) => debug!("network error: {}", err)
-            }
-        }
     }
 }
 
@@ -206,7 +197,7 @@ impl Scheduler {
 pub struct Io<'a> {
     yielder: Option<&'a Yielder<WaitResult, WaitRequest>>,
     spawned: Urc<RefCell<Vec<ThreadHandle>>>,
-    network: Urc<RefCell<Network>>,
+    sockets: Urc<RefCell<SocketSet>>,
 }
 
 impl<'a> Io<'a> {
@@ -300,10 +291,10 @@ impl<'a> Drop for MutexGuard<'a> {
 
 macro_rules! until {
     ($socket:expr, $ty:ty, |$var:ident| $cond:expr) => ({
-        let (network, handle) = ($socket.io.network.clone(), $socket.handle);
+        let (sockets, handle) = ($socket.io.sockets.clone(), $socket.handle);
         $socket.io.until(move || {
-            let mut network = network.borrow_mut();
+            let mut sockets = sockets.borrow_mut();
-            let $var = network.get_socket::<$ty>(handle);
+            let $var = sockets.get::<$ty>(handle);
             $cond
         })
     })
@@ -325,9 +316,9 @@ impl<'a> TcpListener<'a> {
     fn new_lower(io: &'a Io<'a>, buffer_size: usize) -> SocketHandle {
         let rx_buffer = vec![0; buffer_size];
         let tx_buffer = vec![0; buffer_size];
-        io.network
+        io.sockets
             .borrow_mut()
-            .add_socket(TcpSocketLower::new(
+            .add(TcpSocketLower::new(
                 TcpSocketBuffer::new(rx_buffer),
                 TcpSocketBuffer::new(tx_buffer)))
     }
@@ -342,9 +333,9 @@ impl<'a> TcpListener<'a> {
     }
 
     fn with_lower<F, R>(&self, f: F) -> R
-            where F: FnOnce(&mut TcpSocketLower) -> R {
+            where F: FnOnce(SocketRef<TcpSocketLower>) -> R {
-        let mut network = self.io.network.borrow_mut();
+        let mut sockets = self.io.sockets.borrow_mut();
-        let result = f(network.get_socket(self.handle.get()));
+        let result = f(sockets.get(self.handle.get()));
         result
     }
 
@@ -362,7 +353,7 @@ impl<'a> TcpListener<'a> {
 
     pub fn listen<T: Into<IpEndpoint>>(&self, endpoint: T) -> Result<(), Error> {
         let endpoint = endpoint.into();
-        self.with_lower(|s| s.listen(endpoint))
+        self.with_lower(|mut s| s.listen(endpoint))
             .map(|()| {
                 self.endpoint.set(endpoint);
                 ()
@@ -374,10 +365,10 @@ impl<'a> TcpListener<'a> {
         // We're waiting until at least one half of the connection becomes open.
         // This handles the case where a remote socket immediately sends a FIN--
         // that still counts as accepting even though nothing may be sent.
-        let (network, handle) = (self.io.network.clone(), self.handle.get());
+        let (sockets, handle) = (self.io.sockets.clone(), self.handle.get());
         self.io.until(move || {
-            let mut network = network.borrow_mut();
+            let mut sockets = sockets.borrow_mut();
-            let socket = network.get_socket::<TcpSocketLower>(handle);
+            let socket = sockets.get::<TcpSocketLower>(handle);
             socket.may_send() || socket.may_recv()
         })?;
 
@@ -394,14 +385,14 @@ impl<'a> TcpListener<'a> {
     }
 
     pub fn close(&self) {
-        self.with_lower(|s| s.close())
+        self.with_lower(|mut s| s.close())
     }
 }
 
 impl<'a> Drop for TcpListener<'a> {
     fn drop(&mut self) {
-        self.with_lower(|s| s.close());
+        self.with_lower(|mut s| s.close());
-        self.io.network.borrow_mut().remove_socket(self.handle.get());
+        self.io.sockets.borrow_mut().release(self.handle.get())
     }
 }
 
@@ -425,9 +416,9 @@ impl<'a> TcpStream<'a> {
     }
 
     fn with_lower<F, R>(&self, f: F) -> R
-            where F: FnOnce(&mut TcpSocketLower) -> R {
+            where F: FnOnce(SocketRef<TcpSocketLower>) -> R {
-        let mut network = self.io.network.borrow_mut();
+        let mut sockets = self.io.sockets.borrow_mut();
-        let result = f(network.get_socket(self.handle));
+        let result = f(sockets.get(self.handle));
         result
     }
 
@@ -464,7 +455,7 @@ impl<'a> TcpStream<'a> {
     }
 
     pub fn set_timeout(&self, value: Option<u64>) {
-        self.with_lower(|s| s.set_timeout(value.map(Duration::from_millis)))
+        self.with_lower(|mut s| s.set_timeout(value.map(Duration::from_millis)))
     }
 
     pub fn keep_alive(&self) -> Option<u64> {
@@ -472,11 +463,11 @@ impl<'a> TcpStream<'a> {
     }
 
     pub fn set_keep_alive(&self, value: Option<u64>) {
-        self.with_lower(|s| s.set_keep_alive(value.map(Duration::from_millis)))
+        self.with_lower(|mut s| s.set_keep_alive(value.map(Duration::from_millis)))
     }
 
     pub fn close(&self) -> Result<(), Error> {
-        self.with_lower(|s| s.close());
+        self.with_lower(|mut s| s.close());
         until!(self, TcpSocketLower, |s| !s.is_open())?;
         // right now the socket may be in TIME-WAIT state. if we don't give it a chance to send
         // a packet, and the user code executes a loop { s.listen(); s.read(); s.close(); }
@@ -490,33 +481,23 @@ impl<'a> Read for TcpStream<'a> {
 
     fn read(&mut self, buf: &mut [u8]) -> Result<usize, Self::ReadError> {
         // Only borrow the underlying socket for the span of the next statement.
-        let result = self.with_lower(|s| s.recv_slice(buf));
+        let result = self.with_lower(|mut s| s.recv_slice(buf));
         match result {
             // Slow path: we need to block until buffer is non-empty.
             Ok(0) => {
                 until!(self, TcpSocketLower, |s| s.can_recv() || !s.may_recv())?;
-                match self.with_lower(|s| s.recv_slice(buf)) {
+                match self.with_lower(|mut s| s.recv_slice(buf)) {
                     Ok(length) => Ok(length),
-                    Err(NetworkError::Finished) |
                     Err(NetworkError::Illegal) => Ok(0),
-                    Err(e) => {
+                    _ => unreachable!()
-                        panic!("Unexpected error from smoltcp: {}", e);
-                    }
                 }
             }
             // Fast path: we had data in buffer.
             Ok(length) => Ok(length),
-            // We've received a fin.
-            Err(NetworkError::Finished) |
             // Error path: the receive half of the socket is not open.
             Err(NetworkError::Illegal) => Ok(0),
             // No other error may be returned.
-            Err(e) => {
+            Err(_) => unreachable!()
-                // This could return Err(Error::Network(e)) rather than panic,
-                // but I expect that'll just cause a panic later perhaps with
-                // less interesting context.
-                panic!("Unexpected error from smoltcp: {}", e);
-            }
         }
     }
 }
@@ -527,12 +508,12 @@ impl<'a> Write for TcpStream<'a> {
 
     fn write(&mut self, buf: &[u8]) -> Result<usize, Self::WriteError> {
         // Only borrow the underlying socket for the span of the next statement.
-        let result = self.with_lower(|s| s.send_slice(buf));
+        let result = self.with_lower(|mut s| s.send_slice(buf));
         match result {
             // Slow path: we need to block until buffer is non-full.
             Ok(0) => {
                 until!(self, TcpSocketLower, |s| s.can_send() || !s.may_send())?;
-                match self.with_lower(|s| s.send_slice(buf)) {
+                match self.with_lower(|mut s| s.send_slice(buf)) {
                     Ok(length) => Ok(length),
                     Err(NetworkError::Illegal) => Ok(0),
                     _ => unreachable!()
@@ -559,7 +540,7 @@ impl<'a> Write for TcpStream<'a> {
 
 impl<'a> Drop for TcpStream<'a> {
     fn drop(&mut self) {
-        self.with_lower(|s| s.close());
+        self.with_lower(|mut s| s.close());
-        self.io.network.borrow_mut().remove_socket(self.handle);
+        self.io.sockets.borrow_mut().release(self.handle)
     }
 }