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net; allow changing MAC addr at runtime.

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This commit is contained in:
Dario Nieuwenhuis 2022-12-27 01:04:55 +01:00
parent 4297eb27ff
commit 4a4b593694
2 changed files with 44 additions and 28 deletions
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56
embassy-net-driver-channel/src/lib.rs
View file

@ -34,24 +34,25 @@ impl<const MTU: usize, const N_RX: usize, const N_TX: usize> State<MTU, N_RX, N_
struct StateInner<'d, const MTU: usize> {
rx: zerocopy_channel::Channel<'d, NoopRawMutex, PacketBuf<MTU>>,
tx: zerocopy_channel::Channel<'d, NoopRawMutex, PacketBuf<MTU>>,
link_state: Mutex<NoopRawMutex, RefCell<LinkStateState>>,
shared: Mutex<NoopRawMutex, RefCell<Shared>>,
}
/// State of the LinkState
struct LinkStateState {
state: LinkState,
struct Shared {
link_state: LinkState,
waker: WakerRegistration,
ethernet_address: [u8; 6],
}
pub struct Runner<'d, const MTU: usize> {
tx_chan: zerocopy_channel::Receiver<'d, NoopRawMutex, PacketBuf<MTU>>,
rx_chan: zerocopy_channel::Sender<'d, NoopRawMutex, PacketBuf<MTU>>,
link_state: &'d Mutex<NoopRawMutex, RefCell<LinkStateState>>,
shared: &'d Mutex<NoopRawMutex, RefCell<Shared>>,
}
pub struct RxRunner<'d, const MTU: usize> {
rx_chan: zerocopy_channel::Sender<'d, NoopRawMutex, PacketBuf<MTU>>,
link_state: &'d Mutex<NoopRawMutex, RefCell<LinkStateState>>,
shared: &'d Mutex<NoopRawMutex, RefCell<Shared>>,
}
pub struct TxRunner<'d, const MTU: usize> {
@ -62,7 +63,7 @@ impl<'d, const MTU: usize> Runner<'d, MTU> {
pub fn split(self) -> (RxRunner<'d, MTU>, TxRunner<'d, MTU>) {
(
RxRunner {
link_state: self.link_state,
shared: self.shared,
rx_chan: self.rx_chan,
},
TxRunner { tx_chan: self.tx_chan },
@ -70,9 +71,17 @@ impl<'d, const MTU: usize> Runner<'d, MTU> {
}
pub fn set_link_state(&mut self, state: LinkState) {
self.link_state.lock(|s| {
self.shared.lock(|s| {
let s = &mut *s.borrow_mut();
s.state = state;
s.link_state = state;
s.waker.wake();
});
}
pub fn set_ethernet_address(&mut self, address: [u8; 6]) {
self.shared.lock(|s| {
let s = &mut *s.borrow_mut();
s.ethernet_address = address;
s.waker.wake();
});
}
@ -124,9 +133,17 @@ impl<'d, const MTU: usize> Runner<'d, MTU> {
impl<'d, const MTU: usize> RxRunner<'d, MTU> {
pub fn set_link_state(&mut self, state: LinkState) {
self.link_state.lock(|s| {
self.shared.lock(|s| {
let s = &mut *s.borrow_mut();
s.state = state;
s.link_state = state;
s.waker.wake();
});
}
pub fn set_ethernet_address(&mut self, address: [u8; 6]) {
self.shared.lock(|s| {
let s = &mut *s.borrow_mut();
s.ethernet_address = address;
s.waker.wake();
});
}
@ -194,8 +211,9 @@ pub fn new<'d, const MTU: usize, const N_RX: usize, const N_TX: usize>(
let state = unsafe { &mut *state_uninit }.write(StateInner {
rx: zerocopy_channel::Channel::new(&mut state.rx[..]),
tx: zerocopy_channel::Channel::new(&mut state.tx[..]),
link_state: Mutex::new(RefCell::new(LinkStateState {
state: LinkState::Down,
shared: Mutex::new(RefCell::new(Shared {
link_state: LinkState::Down,
ethernet_address,
waker: WakerRegistration::new(),
})),
});
@ -207,12 +225,11 @@ pub fn new<'d, const MTU: usize, const N_RX: usize, const N_TX: usize>(
Runner {
tx_chan: tx_receiver,
rx_chan: rx_sender,
link_state: &state.link_state,
shared: &state.shared,
},
Device {
caps,
ethernet_address,
link_state: &state.link_state,
shared: &state.shared,
rx: rx_receiver,
tx: tx_sender,
},
@ -233,9 +250,8 @@ impl<const MTU: usize> PacketBuf<MTU> {
pub struct Device<'d, const MTU: usize> {
rx: zerocopy_channel::Receiver<'d, NoopRawMutex, PacketBuf<MTU>>,
tx: zerocopy_channel::Sender<'d, NoopRawMutex, PacketBuf<MTU>>,
link_state: &'d Mutex<NoopRawMutex, RefCell<LinkStateState>>,
shared: &'d Mutex<NoopRawMutex, RefCell<Shared>>,
caps: Capabilities,
ethernet_address: [u8; 6],
}
impl<'d, const MTU: usize> embassy_net_driver::Driver for Device<'d, MTU> {
@ -265,14 +281,14 @@ impl<'d, const MTU: usize> embassy_net_driver::Driver for Device<'d, MTU> {
}
fn ethernet_address(&self) -> [u8; 6] {
self.ethernet_address
self.shared.lock(|s| s.borrow().ethernet_address)
}
fn link_state(&mut self, cx: &mut Context) -> LinkState {
self.link_state.lock(|s| {
self.shared.lock(|s| {
let s = &mut *s.borrow_mut();
s.waker.register(cx.waker());
s.state
s.link_state
})
}
}

16
embassy-net/src/lib.rs
View file

@ -111,20 +111,13 @@ impl<D: Driver + 'static> Stack<D> {
#[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();
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.hardware_addr(HardwareAddress::Ethernet(EthernetAddress(device.ethernet_address())));
b = b.neighbor_cache(NeighborCache::new(&mut resources.neighbor_cache[..]));
b = b.routes(Routes::new(&mut resources.routes[..]));
}
@ -261,6 +254,13 @@ impl<D: Driver + 'static> Inner<D> {
fn poll(&mut self, cx: &mut Context<'_>, s: &mut SocketStack) {
s.waker.register(cx.waker());
#[cfg(feature = "medium-ethernet")]
if self.device.capabilities().medium == Medium::Ethernet {
s.iface.set_hardware_addr(HardwareAddress::Ethernet(EthernetAddress(
self.device.ethernet_address(),
)));
}
let timestamp = instant_to_smoltcp(Instant::now());
let mut smoldev = DriverAdapter {
cx: Some(cx),