Add rig pointer to hamlib_port_t

include/hamlib/rig.h

@@ -2184,6 +2184,7 @@ typedef struct hamlib_port {
         } gpio;             /*!< GPIO attributes */
     } parm;                 /*!< Port parameter union */
     int client_port;      /*!< client socket port for tcp connection */
+    RIG *rig;             /*!< our parent RIG device */
 } hamlib_port_t;
 //! @endcond
 

src/rig.c

@@ -694,6 +694,7 @@ int HAMLIB_API rig_open(RIG *rig)
 
     caps = rig->caps;
     rs = &rig->state;
+    rs->rigport.rig = rig;
 
     if (strlen(rs->rigport.pathname) > 0)
     {