refactor: cleaned up some code

there was an attempt to use libnl to look up addresses directly with
FIB_LOOKUP, and some of that code was left over. This commit cleans up
such leftover code

nl-sys/src/bridge.c

@@ -20,6 +20,3 @@
 int netlink_route() {
     return NETLINK_ROUTE;
 }
-int netlink_fib_lookup() {
-    return NETLINK_FIB_LOOKUP;
-}

nl-sys/src/lib.rs

@@ -13,8 +13,6 @@
 // You should have received a copy of the GNU Affero General Public License
 // along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
-use std::net::Ipv4Addr;
-
 pub mod nl_ffi;
 pub mod netlink;
 pub mod route;
@@ -23,7 +21,6 @@ pub mod error;
 // from bridge.c
 extern "C" {
     pub(crate) fn netlink_route() -> libc::c_int;
-    pub(crate) fn netlink_fib_lookup() -> libc::c_int;
 }
 
 /* fn main() -> error::Result<()> {

nl-sys/src/netlink.rs

@@ -23,22 +23,8 @@ pub struct Socket {
     pub(crate) sock: *mut nl_sock
 }
 
-pub enum SocketType {
-    Routing,
-    Lookup
-}
-
-impl SocketType {
-    pub fn to_proto(&self) -> i32 {
-        unsafe { match self {
-            Self::Routing => crate::netlink_route(),
-            Self::Lookup => crate::netlink_fib_lookup()
-        } }
-    }
-}
-
 impl Socket {
-    pub fn new(stype: SocketType) -> error::Result<Self> {
+    pub fn new() -> error::Result<Self> {
         unsafe {
             let sock = Socket { sock: nl_socket_alloc() };
 
@@ -124,13 +110,6 @@ where
 }
 
 impl<T: From<*mut nl_object>> Cache<T> {
-    pub(crate) fn new(cache: *mut nl_cache) -> Cache<T> {
-        Cache {
-            cache,
-            dt: PhantomData
-        }
-    }
-
     pub fn iter(&self) -> CacheIter<'_, T> {
         let cache_size = unsafe {
             nl_cache_nitems(self.cache)

nl-sys/src/route.rs

@@ -15,9 +15,9 @@
 
 use std::{ffi::{CStr, CString}, net::Ipv4Addr};
 
-use libc::{c_int, AF_INET, AF_UNIX, AF_UNSPEC, c_uint};
+use libc::{c_int, AF_INET, c_uint};
 
-use crate::{error, netlink::{Cache, Socket}};
+use crate::{error, netlink::Cache};
 
 use super::nl_ffi::*;