Linux support

src/interface/linux.rs

@@ -22,3 +22,25 @@ pub fn get_interface_type(if_name: String) -> InterfaceType {
         }
     };   
 }
+
+pub fn get_interface_speed(if_name: String) -> Option<u64> {
+    let if_speed_path: String = format!("/sys/class/net/{}/speed", if_name);
+    let r = read_to_string(if_speed_path);
+    match r {
+        Ok(content) => {
+            let if_speed_string = content.trim().to_string();
+            match if_speed_string.parse::<u64>() {
+                Ok(if_speed) => {
+                    // Convert Mbps to bps
+                    return Some(if_speed * 1000000);
+                },
+                Err(_) => {
+                    return None;
+                }
+            }
+        },
+        Err(_) => {
+            return None;
+        }
+    };   
+}

src/interface/unix.rs

@@ -95,6 +95,9 @@ pub fn interfaces() -> Vec<Interface> {
     };
     for iface in &mut interfaces {
         iface.if_type = linux::get_interface_type(iface.name.clone());
+        let if_speed: Option<u64> = linux::get_interface_speed(iface.name.clone());
+        iface.transmit_speed = if_speed;
+        iface.receive_speed = if_speed;
         match local_ip {
             IpAddr::V4(local_ipv4) => {
                 if iface.ipv4.iter().any(|x| x.addr == local_ipv4) {
@@ -248,6 +251,8 @@ pub fn unix_interfaces() -> Vec<Interface> {
             ipv4: ini_ipv4,
             ipv6: ini_ipv6,
             flags: addr_ref.ifa_flags,
+            transmit_speed: None,
+            receive_speed: None,
             gateway: None,
         };
         let mut found: bool = false;