address_family: impl From<IpAddr> for AddressFamily

When writing AF-agnostic code it's convenient to get the appropriate
AddressFamily variant for a given IpAddr.

Since all platform variations of AddressFamily have Inet and Inet6
variants, we add the impl in a platform-agnostic manner.

Signed-off-by: Duncan Eastoe <[email protected]>

Author: deastoe

src/address_family.rs

@@ -0,0 +1,14 @@
+// SPDX-License-Identifier: MIT
+
+use std::net::IpAddr;
+
+use crate::AddressFamily;
+
+impl From<IpAddr> for AddressFamily {
+    fn from(v: IpAddr) -> Self {
+        match v {
+            IpAddr::V4(_) => AddressFamily::Inet,
+            IpAddr::V6(_) => AddressFamily::Inet6,
+        }
+    }
+}

src/lib.rs

@@ -23,6 +23,7 @@
 //! [rtnetlink_url]: https://docs.rs/rtnetlink
 
 pub mod address;
+mod address_family;
 pub mod link;
 pub mod neighbour;
 pub mod neighbour_table;