net: Implement iface polling timer

- iface needs to be polled with ref to iface.poll_at time to ensure quality of service
- iface.poll() also services TCP related Timers
This commit is contained in:
linuswck 2024-05-02 10:25:13 +08:00
parent 70fed23c51
commit e8aaf5f66b
3 changed files with 131 additions and 8 deletions

View File

@ -109,6 +109,7 @@ pub fn bootup(
eth_mgmt_pins,
ethernet_parts_in,
clocks,
perif.TIM5.counter(&clocks),
mac_addr,
ip_settings,
);

View File

@ -142,6 +142,8 @@ fn main() -> ! {
State::MainLoop => {
laser.poll_and_update_output_current();
net::net::eth_update_iface_poll_timer();
if thermostat.poll_adc() {
thermostat.update_pid();
if thermostat.get_temp_mon_status().over_temp_alarm {
@ -160,8 +162,6 @@ fn main() -> ! {
&mut thermostat,
&mut socket,
);
} else {
debug!("Socket {:?} is not ready to send status report", id)
}
}
} else {
@ -191,8 +191,6 @@ fn main() -> ! {
&mut active_report[id],
);
}
} else {
debug!("Socket {:?} is not ready to process command", id);
}
}
})

View File

@ -1,5 +1,6 @@
use core::mem::{self, MaybeUninit};
use fugit::TimerDurationU32;
use log::{debug, info};
use serde::{Deserialize, Serialize};
use smoltcp::{iface::{self, Interface, SocketHandle, SocketSet, SocketStorage},
@ -10,8 +11,10 @@ use stm32_eth::{dma::{EthernetDMA, RxRingEntry, TxRingEntry},
mac::{EthernetMACWithMii, Speed},
EthPins, Parts, PartsIn};
use stm32f4xx_hal::{gpio::{gpioa::*, gpiob::*, gpioc::*, Alternate, Input, Pin},
interrupt,
rcc::Clocks};
pac::{interrupt, Interrupt, Peripherals, TIM5},
rcc::Clocks,
timer::{Counter, Event},
Listen};
use crate::device::sys_timer;
@ -34,6 +37,8 @@ impl Default for IpSettings {
}
}
static mut IFACE_TIMER: Option<IfacePollTimer> = None;
pub struct ServerHandle {
socket_handles: [SocketHandle; NUM_OF_SOCKETS],
socket_set: SocketSet<'static>,
@ -62,12 +67,15 @@ fn now_fn() -> smoltcp::time::Instant {
static mut SERVER_HANDLE: Option<ServerHandle> = None;
pub const FREQ: u32 = 1000000;
impl ServerHandle {
pub fn new(
eth_pins: EthernetPins,
eth_mgmt_pins: EthernetMgmtPins,
ethernet_parts_in: PartsIn,
clocks: Clocks,
tim5: Counter<TIM5, FREQ>,
mac_addr: [u8; 6],
ip_settings: IpSettings,
) {
@ -154,7 +162,9 @@ impl ServerHandle {
for i in 0..NUM_OF_SOCKETS {
let socket = socket_set.get_mut::<Socket>(tcp_handles[i]);
socket.listen(socket_addr).ok();
socket.set_keep_alive(Some(Duration::from_secs(1)));
socket.set_timeout(Some(Duration::from_secs(5)));
// Value from Linux net.ipv4.tcp_keepalive_time
socket.set_keep_alive(Some(Duration::from_secs(7200)));
socket.set_nagle_enabled(false);
}
@ -164,6 +174,8 @@ impl ServerHandle {
&mut socket_set,
);
IfacePollTimer::setup(tim5);
if let Ok(mut phy) = EthernetPhy::from_miim(mac, 0) {
info!("Resetting PHY as an extra step. Type: {}", phy.ident_string());
@ -211,6 +223,14 @@ impl ServerHandle {
self.iface.poll(now_fn(), &mut &mut self.dma, &mut self.socket_set);
}
pub fn poll_at_iface(&mut self) -> Option<Instant> {
self.iface.poll_at(now_fn(), &mut self.socket_set)
}
pub fn poll_delay_iface(&mut self) -> Option<Duration> {
self.iface.poll_delay(now_fn(), &mut self.socket_set)
}
pub fn recv(
&mut self,
buffer: &mut [u8],
@ -402,7 +422,17 @@ pub fn eth_poll_link_status_and_update_link_speed() -> bool {
}
}
pub fn eth_poll_iface() {
pub fn eth_update_iface_poll_timer() {
unsafe {
if let Some(ref mut server_handle) = SERVER_HANDLE {
IfacePollTimer::set_timer(server_handle.poll_at_iface(), server_handle.poll_delay_iface())
} else {
panic!("eth_update_iface_poll_timer is called before init")
}
}
}
fn eth_poll_iface() {
unsafe {
if let Some(ref mut server_handle) = SERVER_HANDLE {
server_handle.poll_iface();
@ -492,3 +522,97 @@ fn ETH() {
});
debug!("Ethernet Interrupt{:?}", interrupt_reason);
}
pub struct IfacePollTimer {
timer: Counter<TIM5, FREQ>,
poll_at_set: Instant,
}
impl IfacePollTimer {
fn get() -> Option<&'static mut Self> {
unsafe { IFACE_TIMER.as_mut() }
}
pub fn setup(tim5: Counter<TIM5, FREQ>) {
unsafe {
cortex_m::peripheral::NVIC::unmask(Interrupt::TIM5);
IFACE_TIMER = Some(IfacePollTimer {
timer: tim5,
poll_at_set: Instant::from_micros(u32::max_value()),
})
}
}
fn is_timer_running() -> bool {
unsafe { Peripherals::steal().TIM5.cr1.read().cen().bit() }
}
pub fn set_timer(poll_at: Option<Instant>, delay: Option<Duration>) {
if let Some(ref mut iface_timer) = IfacePollTimer::get() {
if !IfacePollTimer::is_timer_running() {
match poll_at {
Some(val) => {
IfacePollTimer::set_timer_delay(delay);
iface_timer.poll_at_set = val;
}
None => {}
}
} else {
match poll_at {
Some(val) => {
if iface_timer.poll_at_set != val {
IfacePollTimer::stop_listening();
IfacePollTimer::set_timer_delay(delay);
iface_timer.poll_at_set = val;
}
}
None => {}
}
}
}
}
fn set_timer_delay(delay: Option<Duration>) {
if let Some(ref mut iface_timer) = IfacePollTimer::get() {
match delay {
Some(val) => {
if val.micros() != 0 {
match iface_timer.timer.start(TimerDurationU32::micros(val.micros() as u32)) {
Ok(_) => {
iface_timer.timer.listen(Event::Update);
}
Err(e) => {
debug!("Timer cannot be set {:?}", e)
}
};
} else {
eth_poll_iface();
}
}
None => {}
}
}
}
pub fn clear_irq_flag() {
if let Some(ref mut iface_timer) = IfacePollTimer::get() {
iface_timer.timer.wait().ok();
}
}
pub fn stop_listening() {
if let Some(ref mut iface_timer) = IfacePollTimer::get() {
iface_timer.timer.unlisten(Event::Update);
iface_timer.timer.cancel().ok();
}
}
}
#[interrupt]
fn TIM5() {
eth_poll_iface();
cortex_m::interrupt::free(|_| {
IfacePollTimer::stop_listening();
IfacePollTimer::clear_irq_flag();
});
}