Rework controler

Signed-off-by: Adrien Gallouët <adrien@gallouet.fr>

src/ctl.h

@@ -3,23 +3,19 @@
 #include <sys/socket.h>
 
 enum ctl_type {
-    CTL_UNKNOWN,
+    CTL_NONE = 0,
     CTL_PATH_ADD,
     CTL_PATH_DEL,
     CTL_STATUS,
-    CTL_STATUS_REPLY,
     CTL_MTU,
     CTL_TIMEOUT,
     CTL_TIMETOLERANCE,
-    CTL_REPLY,
 };
 
 struct ctl_msg {
     enum ctl_type type;
+    int reply, ret;
     union {
-        struct {
-            enum ctl_type type;
-        } unknown;
         struct sockaddr_storage path_addr;
         struct {
             size_t mtu;
@@ -31,10 +27,10 @@ struct ctl_msg {
         int mtu;
         unsigned long timeout;
         unsigned long timetolerance;
-        int reply;
     };
 };
 
 int  ctl_create  (const char *, const char *);
 int  ctl_connect (int, const char *, const char *);
+int  ctl_reply   (int, struct ctl_msg *, struct ctl_msg *);
 void ctl_delete  (int);