Expose setting the default ip address

Author: oli-obk

src/bin/async-await.rs

@@ -497,7 +497,7 @@ where
             &mut self.ethernet_dma,
             ETH_ADDR,
         )
-        .map(|device| device.into_interface());
+        .map(|device| device.into_interface(Ipv4Address::new(192, 168, 42, 69)));
         let mut iface = match ethernet_interface {
             Ok(iface) => iface,
             Err(e) => {

src/bin/polling.rs

@@ -142,7 +142,7 @@ fn main() -> ! {
         ETH_ADDR,
     )
     .map(|device| {
-        let iface = device.into_interface();
+        let iface = device.into_interface(Ipv4Address::new(192, 168, 42, 69));
         let prev_ip_addr = iface.ipv4_addr().unwrap();
         (iface, prev_ip_addr)
     });

src/ethernet/mod.rs

@@ -85,11 +85,11 @@ impl<'d> EthernetDevice<'d> {
     }
 
     /// Transforms the ethernet device into a smoltcp ethernet network interface.
-    pub fn into_interface<'a>(self) -> EthernetInterface<'a, 'a, 'a, Self> {
+    pub fn into_interface<'a>(self, default_addr: Ipv4Address) -> EthernetInterface<'a, 'a, 'a, Self> {
         use alloc::collections::BTreeMap;
         use smoltcp::iface::NeighborCache;
 
-        let ip_addrs = [IpCidr::new(Ipv4Address::UNSPECIFIED.into(), 0)];
+        let ip_addrs = [IpCidr::new(default_addr.into(), 0)];
         let routes_storage = Box::leak(Box::new([None; 1]));
         let routes = Routes::new(&mut routes_storage[..]);