- code cleaned up

Source/charon/sa/child_sa.h

@@ -31,24 +31,41 @@
 typedef struct child_sa_t child_sa_t;
 
 /**
- * @brief 
+ * @brief Represents a CHILD_SA between to hosts.
+ * 
+ * An IKE_SA must already be established.
+ * 
+ * @b Constructors:
+ *  - child_sa_create
+ * 
  * @ingroup sa
  */
 struct child_sa_t {
 	
+	/**
+	 * @brief Returns the SPI value of this CHILD_SA.
+	 * 
+	 * AH and ESP are using 4 byte SPI values.
+	 * 
+	 * @param this		calling object
+	 * @return 			4 Byte SPI value
+	 */
 	u_int32_t (*get_spi) (child_sa_t *this);
 
 	/**
 	 * @brief Destroys a child_sa.
 	 *
-	 * @param this 				child_sa_t object
+	 * @param this 		calling object
 	 */
 	void (*destroy) (child_sa_t *this);
 };
 
 /**
- * @brief 
+ * @brief Constructor to create a new CHILD_SA.
  * 
+ * @param protocol_id	protocol id (AH or ESP) of CHILD_SA
+ * @param prf_plus		prf_plus_t object use to derive shared secrets
+ * @return				child_sa_t object
  * @ingroup sa
  */
 child_sa_t * child_sa_create(protocol_id_t protocol_id, prf_plus_t *prf_plus);