llsec: Let llsec_drivers define their own framer

core/net/llsec/llsec.h

@@ -74,21 +74,11 @@ struct llsec_driver {
   /** Secures outgoing frames before passing them to NETSTACK_MAC. */
   void (* send)(mac_callback_t sent_callback, void *ptr);
   
-  /**
-   * Once the NETSTACK_FRAMER wrote the headers, the LLSEC driver
-   * can generate a MIC over the entire frame.
-   * \return Returns != 0 <-> success
-   */
-  int (* on_frame_created)(void);
-  
   /**
    * Decrypts incoming frames;
    * filters out injected or replayed frames.
    */
   void (* input)(void);
-  
-  /** Returns the security-related overhead per frame in bytes */
-  uint8_t (* get_overhead)(void);
 };
 
 #endif /* LLSEC_H_ */