walk back embedded-nal bump for complexity reasons

Cargo.toml

@@ -11,7 +11,7 @@ repository = "https://github.com/quartiq/smoltcp-nal.git"
 
 [dependencies]
 heapless = "0.7"
-embedded-nal = "0.8"
+embedded-nal = "0.7"
 embedded-time = "0.12"
 
 [dependencies.nanorand]

src/lib.rs

@@ -733,10 +733,9 @@ where
     }
 
     fn get_host_by_address(
-        &self,
+        &mut self,
         _addr: embedded_nal::IpAddr,
-        _result: &mut [u8],
-    ) -> Result<usize, Self::Error> {
+    ) -> embedded_nal::nb::Result<embedded_nal::heapless::String<256>, Self::Error> {
         unimplemented!()
     }
 }

src/shared.rs

@@ -54,13 +54,6 @@ macro_rules! forward {
         }
     }
 }
-macro_rules! forward_ref {
-    ($func:ident($($v:ident: $IT:ty),*) -> $T:ty) => {
-        fn $func(&self, $($v: $IT),*) -> $T {
-            self.mutex.lock(|stack| stack.$func($($v),*))
-        }
-    }
-}
 
 // Implement a TCP stack for the proxy if the underlying network stack implements it.
 impl<'a, S> embedded_nal::TcpClientStack for NetworkStackProxy<'a, S>
@@ -106,7 +99,7 @@ where
     type Error = S::Error;
 
     forward! {get_host_by_name(hostname: &str, addr_type: embedded_nal::AddrType) -> embedded_nal::nb::Result<embedded_nal::IpAddr, Self::Error>}
-    forward_ref! {get_host_by_address(addr: embedded_nal::IpAddr, result: &mut [u8]) -> Result<usize, Self::Error>}
+    forward! {get_host_by_address(addr: embedded_nal::IpAddr) -> embedded_nal::nb::Result<embedded_nal::heapless::String<256>, Self::Error>}
 }
 
 impl<'a, Device, Clock> NetworkManager<'a, Device, Clock>