Apply Clippy recommendations

src/cake.rs

@@ -4,21 +4,21 @@ pub enum TcaCake {
     Pad = 1,
     BaseRate64 = 2,
     DiffservMode = 3,
-    ATM = 4,
+    Atm = 4,
     FlowMode = 5,
     Overhead = 6,
-    RTT = 7,
+    Rtt = 7,
     Target = 8,
     Autorate = 9,
     Memory = 10,
-    NAT = 11,
+    Nat = 11,
     Raw = 12,
     Wash = 13,
-    MPU = 14,
+    Mpu = 14,
     Ingress = 15,
     AckFilter = 16,
     SplitGso = 17,
     FwMark = 18,
     FwMarkStore = 19,
-    SCE = 20,
+    Sce = 20,
 }

src/config.rs

@@ -33,10 +33,10 @@ where
 
 #[derive(Clone, Copy, Debug)]
 pub enum MeasurementType {
-    ICMP = 1,
-    ICMPTimestamps,
-    NTP,
-    TCPTimestamps,
+    Icmp = 1,
+    IcmpTimestamps,
+    Ntp,
+    TcpTimestamps,
 }
 
 impl FromStr for MeasurementType {
@@ -44,10 +44,10 @@ impl FromStr for MeasurementType {
 
     fn from_str(s: &str) -> Result<Self, Self::Err> {
         return match s.to_lowercase().as_str() {
-            "icmp" => Ok(MeasurementType::ICMP),
-            "icmp-timestamps" => Ok(MeasurementType::ICMPTimestamps),
-            "ntp" => Ok(MeasurementType::NTP),
-            "tcp-timestamps" => Ok(MeasurementType::TCPTimestamps),
+            "icmp" => Ok(MeasurementType::Icmp),
+            "icmp-timestamps" => Ok(MeasurementType::IcmpTimestamps),
+            "ntp" => Ok(MeasurementType::Ntp),
+            "tcp-timestamps" => Ok(MeasurementType::TcpTimestamps),
             &_ => Err(ConfigError::InvalidMeasurementType(s.to_string())),
         };
     }
@@ -150,7 +150,7 @@ impl Config {
             measurement_type: Self::get::<MeasurementType>(
                 "SQMA_MEASUREMENT_TYPE",
                 "sqm-autorate.@advanced_settings[0].measurement_type",
-                Some(MeasurementType::ICMPTimestamps),
+                Some(MeasurementType::IcmpTimestamps),
             )?,
             min_change_interval: Self::get::<f64>(
                 "SQMA_MIN_CHANGE_INTERVAL",
@@ -185,25 +185,19 @@ impl Config {
         })
     }
 
-    fn get<T: std::str::FromStr>(
-        env_key: &str,
-        uci_key: &str,
-        default: Option<T>,
-    ) -> Result<T, ConfigError> {
-        return match Self::get_value(env_key, uci_key) {
+    fn get<T: FromStr>(env_key: &str, uci_key: &str, default: Option<T>) -> Result<T, ConfigError> {
+        match Self::get_value(env_key, uci_key) {
             Some(val) => match val.parse::<T>() {
                 Ok(parsed_val) => Ok(parsed_val),
                 // Ran into an compilation error while trying to return the
                 // error as-is, so using my own error type to indicate something went wrong while parsing
                 Err(_) => Err(ConfigError::ParseError(env_key.to_string())),
             },
-            None => {
-                return match default {
-                    Some(val) => Ok(val),
-                    None => Err(ConfigError::MissingValue(env_key.to_string())),
-                }
-            }
-        };
+            None => match default {
+                Some(val) => Ok(val),
+                None => Err(ConfigError::MissingValue(env_key.to_string())),
+            },
+        }
     }
 
     fn get_value(env_key: &str, uci_key: &str) -> Option<String> {
@@ -256,7 +250,7 @@ impl Config {
             }
 
             let line = line?;
-            let columns: Vec<&str> = line.split(",").collect();
+            let columns: Vec<&str> = line.split(',').collect();
             reflectors.push(IpAddr::from_str(columns[0])?);
         }
 

src/log.rs

@@ -13,7 +13,7 @@ const LOG_DATETIME_FORMAT: &[FormatItem] = format_description!(
 
 #[derive(Clone, Copy)]
 pub struct SimpleLogger {
-    pub level: log::Level,
+    pub level: Level,
 }
 
 fn time_format<T>(dt: T, format: &(impl Formattable + ?Sized)) -> String

src/main.rs

@@ -78,15 +78,15 @@ fn main() -> anyhow::Result<()> {
     let (reselect_sender, reselect_receiver) = channel();
 
     let (mut pinger_receiver, mut pinger_sender) = match config.measurement_type {
-        MeasurementType::ICMP => (
+        MeasurementType::Icmp => (
             Box::new(PingerICMPEchoListener {}) as Box<dyn PingListener + Send>,
             Box::new(PingerICMPEchoSender {}) as Box<dyn PingSender + Send>,
         ),
-        MeasurementType::ICMPTimestamps => (
+        MeasurementType::IcmpTimestamps => (
             Box::new(PingerICMPTimestampListener {}) as Box<dyn PingListener + Send>,
             Box::new(PingerICMPTimestampSender {}) as Box<dyn PingSender + Send>,
         ),
-        MeasurementType::NTP | MeasurementType::TCPTimestamps => {
+        MeasurementType::Ntp | MeasurementType::TcpTimestamps => {
             todo!()
         }
     };
@@ -150,30 +150,27 @@ fn main() -> anyhow::Result<()> {
     // Sleep 10 seconds before we start adjusting speeds
     sleep(Duration::new(10, 0));
 
-    let dl_direction;
-    let ul_direction;
-
-    if config.download_interface.starts_with("ifb") || config.download_interface.starts_with("veth")
+    let dl_direction = if config.download_interface.starts_with("ifb")
+        || config.download_interface.starts_with("veth")
     {
-        dl_direction = StatsDirection::TX;
-    } else if config.download_interface == "br-lan" {
-        dl_direction = StatsDirection::RX;
+        StatsDirection::TX
     } else {
-        dl_direction = StatsDirection::RX;
-    }
-
-    if config.upload_interface.starts_with("ifb") || config.upload_interface.starts_with("veth") {
-        ul_direction = StatsDirection::RX;
+        StatsDirection::RX
+    };
+    let ul_direction = if config.upload_interface.starts_with("ifb")
+        || config.upload_interface.starts_with("veth")
+    {
+        StatsDirection::RX
     } else {
-        ul_direction = StatsDirection::TX;
-    }
+        StatsDirection::TX
+    };
 
     let mut ratecontroller = Ratecontroller::new(
         config.clone(),
-        owd_baseline.clone(),
-        owd_recent.clone(),
-        reflector_peers_lock.clone(),
-        reselect_sender.clone(),
+        owd_baseline,
+        owd_recent,
+        reflector_peers_lock,
+        reselect_sender,
     )?;
 
     debug!(

src/netlink.rs

@@ -241,7 +241,7 @@ impl Netlink {
             }
         }
 
-        return Err(NetlinkError::NoQdiscFound(ifindex.to_string()));
+        Err(NetlinkError::NoQdiscFound(ifindex.to_string()))
     }
 
     pub fn qdisc_from_ifname(ifname: &str) -> Result<Qdisc, NetlinkError> {

src/pinger.rs

@@ -40,12 +40,12 @@ pub struct PingReply {
     pub last_receive_time_s: f64,
 }
 
-fn open_socket(type_: MeasurementType) -> std::io::Result<Socket> {
+fn open_socket(type_: MeasurementType) -> io::Result<Socket> {
     match type_ {
-        MeasurementType::ICMP | MeasurementType::ICMPTimestamps => {
+        MeasurementType::Icmp | MeasurementType::IcmpTimestamps => {
             Socket::new(Domain::IPV4, Type::RAW, Some(Protocol::ICMPV4))
         }
-        MeasurementType::NTP => Socket::new(Domain::IPV4, Type::DGRAM, None),
+        MeasurementType::Ntp => Socket::new(Domain::IPV4, Type::DGRAM, None),
         _ => {
             unimplemented!()
         }
@@ -131,20 +131,18 @@ pub trait PingSender {
             drop(reflectors_unlocked);
 
             for reflector in reflectors.iter() {
-                let addr: SockAddr;
-
-                match reflector.is_ipv4() {
+                let addr: SockAddr = match reflector.is_ipv4() {
                     true => {
                         let ip4 = Ipv4Addr::from_str(&*reflector.to_string()).unwrap();
                         let sock4 = SocketAddrV4::new(ip4, 0);
-                        addr = sock4.into();
+                        sock4.into()
                     }
                     false => {
                         let ip6 = Ipv6Addr::from_str(&*reflector.to_string()).unwrap();
                         let sock6 = SocketAddrV6::new(ip6, 0, 0, 0);
-                        addr = sock6.into();
+                        sock6.into()
                     }
-                }
+                };
 
                 let buf_v = self.craft_packet(id, seq);
                 let buf = buf_v.as_slice();
@@ -154,10 +152,10 @@ pub trait PingSender {
 
             thread::sleep(sleep_duration);
 
-            seq += 1;
-
-            if seq >= u16::MAX {
+            if seq == u16::MAX {
                 seq = 0;
+            } else {
+                seq += 1;
             }
         }
     }

src/pinger_icmp.rs

@@ -15,7 +15,7 @@ impl PingListener for PingerICMPEchoListener {
     // Result: RTT, down time, up time
     fn parse_packet(&self, id: u16, reflector: IpAddr, buf: &[u8]) -> Result<PingReply, PingError> {
         match SlicedPacket::from_ip(buf) {
-            Err(err) => return Err(PingError::InvalidPacket(err)),
+            Err(err) => Err(PingError::InvalidPacket(err)),
             Ok(value) => match value.transport {
                 Some(Icmpv4(icmp)) => match icmp.icmp_type() {
                     Icmpv4Type::EchoReply(echo) => {
@@ -36,7 +36,7 @@ impl PingListener for PingerICMPEchoListener {
                         let time_ms = clock.to_milliseconds() as i64;
 
                         let rtt: i64 = time_ms - time_sent;
-                        return Ok(PingReply {
+                        Ok(PingReply {
                             reflector,
                             seq: echo.seq,
                             rtt,
@@ -48,21 +48,13 @@ impl PingListener for PingerICMPEchoListener {
                             transmit_timestamp: 0,
                             last_receive_time_s: clock.get_seconds() as f64
                                 + (clock.get_nanoseconds() as f64 / 1e9),
-                        });
-                    }
-                    type_ => {
-                        return Err(PingError::InvalidType(format!("{:?}", type_)));
+                        })
                     }
+                    type_ => Err(PingError::InvalidType(format!("{:?}", type_))),
                 },
-                Some(Icmpv6(slice)) => {
-                    return Err(PingError::InvalidProtocol(format!("{:?}", slice)));
-                }
-                Some(type_) => {
-                    return Err(PingError::InvalidProtocol(format!("{:?}", type_)));
-                }
-                None => {
-                    return Err(PingError::NoTransport);
-                }
+                Some(Icmpv6(slice)) => Err(PingError::InvalidProtocol(format!("{:?}", slice))),
+                Some(type_) => Err(PingError::InvalidProtocol(format!("{:?}", type_))),
+                None => Err(PingError::NoTransport),
             },
         }
     }

src/pinger_icmp_ts.rs

@@ -15,7 +15,7 @@ impl PingListener for PingerICMPTimestampListener {
     // Result: RTT, down time, up time
     fn parse_packet(&self, id: u16, reflector: IpAddr, buf: &[u8]) -> Result<PingReply, PingError> {
         match SlicedPacket::from_ip(buf) {
-            Err(err) => return Err(PingError::InvalidPacket(err)),
+            Err(err) => Err(PingError::InvalidPacket(err)),
             Ok(value) => match value.transport {
                 Some(Icmpv4(icmp)) => match icmp.icmp_type() {
                     Icmpv4Type::TimestampReply(reply) => {
@@ -37,7 +37,7 @@ impl PingListener for PingerICMPTimestampListener {
                         let dl_time: i64 = time_since_midnight - transmit_timestamp as i64;
                         let ul_time: i64 = receive_timestamp as i64 - originate_timestamp as i64;
 
-                        return Ok(PingReply {
+                        Ok(PingReply {
                             reflector,
                             seq: reply.seq,
                             rtt,
@@ -49,21 +49,13 @@ impl PingListener for PingerICMPTimestampListener {
                             transmit_timestamp: transmit_timestamp as i64,
                             last_receive_time_s: time_now.get_seconds() as f64
                                 + (time_now.get_nanoseconds() as f64 / 1e9),
-                        });
-                    }
-                    type_ => {
-                        return Err(PingError::InvalidType(format!("{:?}", type_)));
+                        })
                     }
+                    type_ => Err(PingError::InvalidType(format!("{:?}", type_))),
                 },
-                Some(Icmpv6(slice)) => {
-                    return Err(PingError::InvalidType(format!("{:?}", slice)));
-                }
-                Some(type_) => {
-                    return Err(PingError::InvalidType(format!("{:?}", type_)));
-                }
-                None => {
-                    return Err(PingError::NoTransport);
-                }
+                Some(Icmpv6(slice)) => Err(PingError::InvalidType(format!("{:?}", slice))),
+                Some(type_) => Err(PingError::InvalidType(format!("{:?}", type_))),
+                None => Err(PingError::NoTransport),
             },
         }
     }

src/ratecontroller.rs

@@ -39,7 +39,7 @@ fn generate_initial_speeds(base_speed: f64, size: u32) -> Vec<f64> {
     let mut rates = Vec::new();
 
     for _ in 0..size {
-        rates.push((rand::thread_rng().next_u64() as f64 * 0.2 + 0.75) * base_speed);
+        rates.push((thread_rng().next_u64() as f64 * 0.2 + 0.75) * base_speed);
     }
 
     rates
@@ -116,7 +116,7 @@ impl Ratecontroller {
 
         debug!("direction: {:?} -> state: {:#?}", direction, state);
 
-        if state.deltas.len() > 0 {
+        if !state.deltas.is_empty() {
             state.next_rate = state.current_rate;
 
             if state.deltas.len() < 3 {
@@ -148,8 +148,8 @@ impl Ratecontroller {
                         state.next_rate = state.current_rate
                             * (1.0 + 0.1 * (1.0_f64 - state.current_rate / max_rate).max(0.0))
                             + (base_rate * 0.03);
-                        state.nrate = state.nrate + 1;
-                        state.nrate = state.nrate % self.config.speed_hist_size as usize;
+                        state.nrate += 1;
+                        state.nrate %= self.config.speed_hist_size as usize;
                     }
 
                     if state.delta_stat > delay_ms {
@@ -314,7 +314,7 @@ impl Ratecontroller {
                 .write(true)
                 .open(self.config.speed_hist_file.as_str())?;
 
-            speed_hist_fd_inner.write("time,counter,upspeed,downspeed\n".as_bytes())?;
+            speed_hist_fd_inner.write_all("time,counter,upspeed,downspeed\n".as_bytes())?;
             speed_hist_fd_inner.flush()?;
 
             speed_hist_fd = Some(speed_hist_fd_inner);
@@ -324,7 +324,7 @@ impl Ratecontroller {
                 .write(true)
                 .open(self.config.stats_file.as_str())?;
 
-            stats_fd_inner.write(
+            stats_fd_inner.write_all(
                 "times,timens,rxload,txload,deltadelaydown,deltadelayup,dlrate,uprate\n".as_bytes(),
             )?;
             stats_fd_inner.flush()?;
@@ -338,7 +338,7 @@ impl Ratecontroller {
             let now = Clock::new(ClockId::Monotonic);
             let (mut now_s, now_ns) = (now.get_seconds() as f64, now.get_nanoseconds() as f64);
             let now_abstime = now_s + now_ns / 1e9;
-            now_s = now_s - start_s;
+            now_s -= start_s;
             let now_t = now_s + now_ns / 1e9;
 
             if now_t - lastchg_t > self.config.min_change_interval {
@@ -416,14 +416,14 @@ impl Ratecontroller {
                     }
                 }
 
-                lastchg_s = lastchg_s - start_s;
+                lastchg_s -= start_s;
                 lastchg_t = lastchg_s + lastchg_ns / 1e9;
             }
 
             if let Some(ref mut fd) = speed_hist_fd {
                 if now_t - lastdump_t > 300.0 {
                     for i in 0..self.config.speed_hist_size as usize {
-                        if let Err(e) = fd.write(
+                        if let Err(e) = fd.write_all(
                             format!(
                                 "{},{},{},{}\n",
                                 now_t, i, self.state_ul.safe_rates[i], self.state_dl.safe_rates[i]

src/reflector_selector.rs

@@ -99,7 +99,7 @@ impl ReflectorSelector {
             candidates.sort_by(|a, b| a.1.cmp(&b.1));
 
             // Now we will just limit the candidates down to 2 * num_reflectors
-            let mut num_reflectors = self.config.num_reflectors.clone();
+            let mut num_reflectors = self.config.num_reflectors;
             let candidate_pool_num = (2 * num_reflectors) as usize;
             candidates = candidates[0..candidate_pool_num - 1].to_vec();
 
@@ -108,7 +108,7 @@ impl ReflectorSelector {
             }
 
             // Shuffle the deck so we avoid overwhelming good reflectors (Fisher-Yates)
-            for i in (1 as usize..candidates.len()).rev() {
+            for i in (1_usize..candidates.len()).rev() {
                 let j = rng.gen_range(0..(i + 1));
                 candidates.swap(i, j);
             }

src/utils.rs

@@ -2,7 +2,11 @@ pub struct Utils {}
 
 impl Utils {
     pub fn a_else_b(a: f64, b: f64) -> f64 {
-        return if a > 0.0 { a } else { b };
+        if a > 0.0 {
+            a
+        } else {
+            b
+        }
     }
     pub fn ewma_factor(tick: f64, dur: f64) -> f64 {
         ((0.5_f64).ln() / (dur / tick)).exp()