Add functions to set mode cfg identifier

src/libcharon/encoding/payloads/cp_payload.c

@@ -269,6 +269,17 @@ METHOD(cp_payload_t, get_config_type, config_type_t,
 	return this->cfg_type;
 }
 
+METHOD(cp_payload_t, get_identifier, u_int16_t,
+			 private_cp_payload_t *this)
+{
+	return this->identifier;
+}
+METHOD(cp_payload_t, set_identifier, void,
+			 private_cp_payload_t *this, u_int16_t identifier)
+{
+	this->identifier = identifier;
+}
+
 METHOD2(payload_t, cp_payload_t, destroy, void,
 	private_cp_payload_t *this)
 {
@@ -299,6 +310,8 @@ cp_payload_t *cp_payload_create_type(payload_type_t type, config_type_t cfg_type
 			.create_attribute_enumerator = _create_attribute_enumerator,
 			.add_attribute = _add_attribute,
 			.get_type = _get_config_type,
+			.get_identifier = _get_identifier,
+			.set_identifier = _set_identifier,
 			.destroy = _destroy,
 		},
 		.next_payload = NO_PAYLOAD,

src/libcharon/encoding/payloads/cp_payload.h

@@ -77,6 +77,20 @@ struct cp_payload_t {
 	 */
 	config_type_t (*get_type) (cp_payload_t *this);
 
+	/**
+	 * Set the configuration payload identifier (IKEv1 only).
+	 *
+	 @param identifier	identifier to set
+	 */
+	void (*set_identifier) (cp_payload_t *this, u_int16_t identifier);
+
+	/**
+	 * Get the configuration payload identifier (IKEv1 only).
+	 *
+	 * @return			identifier
+	 */
+	u_int16_t (*get_identifier) (cp_payload_t *this);
+
 	/**
 	 * Destroys an cp_payload_t object.
 	 */