wire: use core::net::Ipv6Addr as the ipv6 address type.

benches/bench.rs

@@ -13,13 +13,9 @@ mod wire {
     extern crate test;
 
     #[cfg(feature = "proto-ipv6")]
-    const SRC_ADDR: IpAddress = IpAddress::Ipv6(Ipv6Address([
-        0xfe, 0x80, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1,
-    ]));
+    const SRC_ADDR: IpAddress = IpAddress::Ipv6(Ipv6Address::new(0xfe80, 0, 0, 0, 0, 0, 0, 1));
     #[cfg(feature = "proto-ipv6")]
-    const DST_ADDR: IpAddress = IpAddress::Ipv6(Ipv6Address([
-        0xfe, 0x80, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2,
-    ]));
+    const DST_ADDR: IpAddress = IpAddress::Ipv6(Ipv6Address::new(0xfe80, 0, 0, 0, 0, 0, 0, 2));
 
     #[cfg(all(not(feature = "proto-ipv6"), feature = "proto-ipv4"))]
     const SRC_ADDR: IpAddress = IpAddress::Ipv4(Ipv4Address::new(192, 168, 1, 1));
@@ -102,8 +98,8 @@ mod wire {
     #[cfg(feature = "proto-ipv6")]
     fn bench_emit_ipv6(b: &mut test::Bencher) {
         let repr = Ipv6Repr {
-            src_addr: Ipv6Address([0xfe, 0x80, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1]),
-            dst_addr: Ipv6Address([0xfe, 0x80, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2]),
+            src_addr: Ipv6Address::new(0xfe80, 0, 0, 0, 0, 0, 0, 1),
+            dst_addr: Ipv6Address::new(0xfe80, 0, 0, 0, 0, 0, 0, 2),
             next_header: IpProtocol::Tcp,
             payload_len: 100,
             hop_limit: 64,

examples/multicast6.rs

@@ -19,9 +19,9 @@ use smoltcp::wire::{EthernetAddress, IpAddress, IpCidr, Ipv6Address};
 // will send packets to the multicast group we join below on tap0.
 
 const PORT: u16 = 8123;
-const GROUP: [u16; 8] = [0xff02, 0, 0, 0, 0, 0, 0, 0x1234];
-const LOCAL_ADDR: [u16; 8] = [0xfe80, 0, 0, 0, 0, 0, 0, 0x101];
-const ROUTER_ADDR: [u16; 8] = [0xfe80, 0, 0, 0, 0, 0, 0, 0x100];
+const GROUP: Ipv6Address = Ipv6Address::new(0xff02, 0, 0, 0, 0, 0, 0, 0x1234);
+const LOCAL_ADDR: Ipv6Address = Ipv6Address::new(0xfe80, 0, 0, 0, 0, 0, 0, 0x101);
+const ROUTER_ADDR: Ipv6Address = Ipv6Address::new(0xfe80, 0, 0, 0, 0, 0, 0, 0x100);
 
 fn main() {
     utils::setup_logging("warn");
@@ -37,7 +37,6 @@ fn main() {
         utils::parse_middleware_options(&mut matches, device, /*loopback=*/ false);
 
     // Create interface
-    let local_addr = Ipv6Address::from_parts(&LOCAL_ADDR);
     let ethernet_addr = EthernetAddress([0x02, 0x00, 0x00, 0x00, 0x00, 0x02]);
     let mut config = match device.capabilities().medium {
         Medium::Ethernet => Config::new(ethernet_addr.into()),
@@ -49,12 +48,12 @@ fn main() {
     let mut iface = Interface::new(config, &mut device, Instant::now());
     iface.update_ip_addrs(|ip_addrs| {
         ip_addrs
-            .push(IpCidr::new(IpAddress::from(local_addr), 64))
+            .push(IpCidr::new(IpAddress::from(LOCAL_ADDR), 64))
             .unwrap();
     });
     iface
         .routes_mut()
-        .add_default_ipv6_route(Ipv6Address::from_parts(&ROUTER_ADDR))
+        .add_default_ipv6_route(ROUTER_ADDR)
         .unwrap();
 
     // Create sockets
@@ -65,9 +64,7 @@ fn main() {
     let udp_handle = sockets.add(udp_socket);
 
     // Join a multicast group
-    iface
-        .join_multicast_group(Ipv6Address::from_parts(&GROUP))
-        .unwrap();
+    iface.join_multicast_group(GROUP).unwrap();
 
     loop {
         let timestamp = Instant::now();

src/iface/interface/ipv6.rs

@@ -58,7 +58,7 @@ impl InterfaceInner {
         fn common_prefix_length(dst_addr: &Ipv6Cidr, src_addr: &Ipv6Address) -> usize {
             let addr = dst_addr.address();
             let mut bits = 0;
-            for (l, r) in addr.as_bytes().iter().zip(src_addr.as_bytes().iter()) {
+            for (l, r) in addr.octets().iter().zip(src_addr.octets().iter()) {
                 if l == r {
                     bits += 8;
                 } else {
@@ -82,7 +82,7 @@ impl InterfaceInner {
                 .count()
                 == 0
         {
-            return Ipv6Address::LOOPBACK;
+            return Ipv6Address::LOCALHOST;
         }
 
         let mut candidate = self
@@ -147,10 +147,10 @@ impl InterfaceInner {
     pub fn has_solicited_node(&self, addr: Ipv6Address) -> bool {
         self.ip_addrs.iter().any(|cidr| {
             match *cidr {
-                IpCidr::Ipv6(cidr) if cidr.address() != Ipv6Address::LOOPBACK => {
+                IpCidr::Ipv6(cidr) if cidr.address() != Ipv6Address::LOCALHOST => {
                     // Take the lower order 24 bits of the IPv6 address and
                     // append those bits to FF02:0:0:0:0:1:FF00::/104.
-                    addr.as_bytes()[14..] == cidr.address().as_bytes()[14..]
+                    addr.octets()[14..] == cidr.address().octets()[14..]
                 }
                 _ => false,
             }
@@ -523,7 +523,7 @@ impl InterfaceInner {
 
         // Per [RFC 3810 § 5.2.14], all MLDv2 reports are sent to ff02::16.
         // [RFC 3810 § 5.2.14]: https://tools.ietf.org/html/rfc3810#section-5.2.14
-        let dst_addr = Ipv6Address::LINK_LOCAL_ALL_MLDV2_ROUTERS;
+        let dst_addr = IPV6_LINK_LOCAL_ALL_MLDV2_ROUTERS;
 
         // Create a dummy IPv6 extension header so we can calculate the total length of the packet.
         // The actual extension header will be created later by Packet::emit_payload().

src/iface/interface/mod.rs

@@ -832,10 +832,10 @@ impl InterfaceInner {
             #[cfg(feature = "proto-ipv4")]
             IpAddress::Ipv4(key) => key == IPV4_MULTICAST_ALL_SYSTEMS,
             #[cfg(feature = "proto-rpl")]
-            IpAddress::Ipv6(Ipv6Address::LINK_LOCAL_ALL_RPL_NODES) => true,
+            IpAddress::Ipv6(IPV6_LINK_LOCAL_ALL_RPL_NODES) => true,
             #[cfg(feature = "proto-ipv6")]
             IpAddress::Ipv6(key) => {
-                key == Ipv6Address::LINK_LOCAL_ALL_NODES || self.has_solicited_node(key)
+                key == IPV6_LINK_LOCAL_ALL_NODES || self.has_solicited_node(key)
             }
             #[allow(unreachable_patterns)]
             _ => false,
@@ -1011,7 +1011,7 @@ impl InterfaceInner {
                 IpAddress::Ipv6(addr) => match self.caps.medium {
                     #[cfg(feature = "medium-ethernet")]
                     Medium::Ethernet => {
-                        let b = addr.as_bytes();
+                        let b = addr.octets();
                         HardwareAddress::Ethernet(EthernetAddress::from_bytes(&[
                             0x33, 0x33, b[12], b[13], b[14], b[15],
                         ]))