Event based ethernetd

drivers/e1000d/src/main.rs

@@ -69,6 +69,11 @@ fn main() {
                             todo.remove(i);
                         }
                     }
+
+                    let next_read = device_irq.next_read();
+                    if next_read > 0 {
+                        return Ok(Some(next_read));
+                    }
                 }
                 Ok(None)
             }).expect("e1000d: failed to catch events on IRQ file");