wire: use core::net::Ipv4Addr as the ipv4 address type.

Author: Dirbaio

Cargo.toml

@@ -25,7 +25,7 @@ byteorder = { version = "1.0", default-features = false }
 log = { version = "0.4.4", default-features = false, optional = true }
 libc = { version = "0.2.18", optional = true }
 bitflags = { version = "1.0", default-features = false }
-defmt = { version = "0.3", optional = true }
+defmt = { version = "0.3.8", optional = true, features = ["ip_in_core"] }
 cfg-if = "1.0.0"
 heapless = "0.8"
 

benches/bench.rs

@@ -22,9 +22,9 @@ mod wire {
     ]));
 
     #[cfg(all(not(feature = "proto-ipv6"), feature = "proto-ipv4"))]
-    const SRC_ADDR: IpAddress = IpAddress::Ipv4(Ipv4Address([192, 168, 1, 1]));
+    const SRC_ADDR: IpAddress = IpAddress::Ipv4(Ipv4Address::new(192, 168, 1, 1));
     #[cfg(all(not(feature = "proto-ipv6"), feature = "proto-ipv4"))]
-    const DST_ADDR: IpAddress = IpAddress::Ipv4(Ipv4Address([192, 168, 1, 2]));
+    const DST_ADDR: IpAddress = IpAddress::Ipv4(Ipv4Address::new(192, 168, 1, 2));
 
     #[bench]
     #[cfg(any(feature = "proto-ipv6", feature = "proto-ipv4"))]
@@ -84,8 +84,8 @@ mod wire {
     #[cfg(feature = "proto-ipv4")]
     fn bench_emit_ipv4(b: &mut test::Bencher) {
         let repr = Ipv4Repr {
-            src_addr: Ipv4Address([192, 168, 1, 1]),
-            dst_addr: Ipv4Address([192, 168, 1, 2]),
+            src_addr: Ipv4Address::new(192, 168, 1, 1),
+            dst_addr: Ipv4Address::new(192, 168, 1, 2),
             next_header: IpProtocol::Tcp,
             payload_len: 100,
             hop_limit: 64,

examples/multicast.rs

@@ -12,7 +12,7 @@ use smoltcp::wire::{
 };
 
 const MDNS_PORT: u16 = 5353;
-const MDNS_GROUP: [u8; 4] = [224, 0, 0, 251];
+const MDNS_GROUP: Ipv4Address = Ipv4Address::new(224, 0, 0, 251);
 
 fn main() {
     utils::setup_logging("warn");
@@ -81,9 +81,7 @@ fn main() {
     let udp_handle = sockets.add(udp_socket);
 
     // Join a multicast group to receive mDNS traffic
-    iface
-        .join_multicast_group(Ipv4Address::from_bytes(&MDNS_GROUP))
-        .unwrap();
+    iface.join_multicast_group(MDNS_GROUP).unwrap();
 
     loop {
         let timestamp = Instant::now();

src/iface/fragmentation.rs

@@ -329,8 +329,8 @@ impl Fragmenter {
             #[cfg(feature = "proto-ipv4-fragmentation")]
             ipv4: Ipv4Fragmenter {
                 repr: Ipv4Repr {
-                    src_addr: Ipv4Address::default(),
-                    dst_addr: Ipv4Address::default(),
+                    src_addr: Ipv4Address::new(0, 0, 0, 0),
+                    dst_addr: Ipv4Address::new(0, 0, 0, 0),
                     next_header: IpProtocol::Unknown(0),
                     payload_len: 0,
                     hop_limit: 0,
@@ -373,8 +373,8 @@ impl Fragmenter {
         #[cfg(feature = "proto-ipv4-fragmentation")]
         {
             self.ipv4.repr = Ipv4Repr {
-                src_addr: Ipv4Address::default(),
-                dst_addr: Ipv4Address::default(),
+                src_addr: Ipv4Address::new(0, 0, 0, 0),
+                dst_addr: Ipv4Address::new(0, 0, 0, 0),
                 next_header: IpProtocol::Unknown(0),
                 payload_len: 0,
                 hop_limit: 0,

src/iface/interface/mod.rs

@@ -830,7 +830,7 @@ impl InterfaceInner {
 
         match addr {
             #[cfg(feature = "proto-ipv4")]
-            IpAddress::Ipv4(key) => key == Ipv4Address::MULTICAST_ALL_SYSTEMS,
+            IpAddress::Ipv4(key) => key == IPV4_MULTICAST_ALL_SYSTEMS,
             #[cfg(feature = "proto-rpl")]
             IpAddress::Ipv6(Ipv6Address::LINK_LOCAL_ALL_RPL_NODES) => true,
             #[cfg(feature = "proto-ipv6")]
@@ -987,30 +987,35 @@ impl InterfaceInner {
         }
 
         if dst_addr.is_multicast() {
-            let b = dst_addr.as_bytes();
             let hardware_addr = match *dst_addr {
                 #[cfg(feature = "proto-ipv4")]
-                IpAddress::Ipv4(_addr) => match self.caps.medium {
+                IpAddress::Ipv4(addr) => match self.caps.medium {
                     #[cfg(feature = "medium-ethernet")]
-                    Medium::Ethernet => HardwareAddress::Ethernet(EthernetAddress::from_bytes(&[
-                        0x01,
-                        0x00,
-                        0x5e,
-                        b[1] & 0x7F,
-                        b[2],
-                        b[3],
-                    ])),
+                    Medium::Ethernet => {
+                        let b = addr.octets();
+                        HardwareAddress::Ethernet(EthernetAddress::from_bytes(&[
+                            0x01,
+                            0x00,
+                            0x5e,
+                            b[1] & 0x7F,
+                            b[2],
+                            b[3],
+                        ]))
+                    }
                     #[cfg(feature = "medium-ieee802154")]
                     Medium::Ieee802154 => unreachable!(),
                     #[cfg(feature = "medium-ip")]
                     Medium::Ip => unreachable!(),
                 },
                 #[cfg(feature = "proto-ipv6")]
-                IpAddress::Ipv6(_addr) => match self.caps.medium {
+                IpAddress::Ipv6(addr) => match self.caps.medium {
                     #[cfg(feature = "medium-ethernet")]
-                    Medium::Ethernet => HardwareAddress::Ethernet(EthernetAddress::from_bytes(&[
-                        0x33, 0x33, b[12], b[13], b[14], b[15],
-                    ])),
+                    Medium::Ethernet => {
+                        let b = addr.as_bytes();
+                        HardwareAddress::Ethernet(EthernetAddress::from_bytes(&[
+                            0x33, 0x33, b[12], b[13], b[14], b[15],
+                        ]))
+                    }
                     #[cfg(feature = "medium-ieee802154")]
                     Medium::Ieee802154 => {
                         // Not sure if this is correct

src/iface/interface/multicast.rs

@@ -334,9 +334,7 @@ impl InterfaceInner {
                 max_resp_time,
             } => {
                 // General query
-                if group_addr.is_unspecified()
-                    && ipv4_repr.dst_addr == Ipv4Address::MULTICAST_ALL_SYSTEMS
-                {
+                if group_addr.is_unspecified() && ipv4_repr.dst_addr == IPV4_MULTICAST_ALL_SYSTEMS {
                     let ipv4_multicast_group_count = self
                         .multicast
                         .groups
@@ -418,7 +416,7 @@ impl InterfaceInner {
             Packet::new_ipv4(
                 Ipv4Repr {
                     src_addr: iface_addr,
-                    dst_addr: Ipv4Address::MULTICAST_ALL_ROUTERS,
+                    dst_addr: IPV4_MULTICAST_ALL_ROUTERS,
                     next_header: IpProtocol::Igmp,
                     payload_len: igmp_repr.buffer_len(),
                     hop_limit: 1,