diff -r 4d8c9a441ef6 -r b544025bd696 master/fsm_master.h
--- a/master/fsm_master.h	Thu May 12 16:38:48 2011 +0200
+++ b/master/fsm_master.h	Thu May 12 16:45:02 2011 +0200
@@ -39,6 +39,7 @@
 
 #include "globals.h"
 #include "datagram.h"
+#include "mailbox.h"
 #include "foe_request.h"
 #include "sdo_request.h"
 #include "soe_request.h"
@@ -57,8 +58,11 @@
     size_t nwords; /**< Number of words. */
     const uint16_t *words; /**< Pointer to the data words. */
     ec_internal_request_state_t state; /**< State of the request. */
+    struct kref refcount;
 } ec_sii_write_request_t;
 
+void ec_master_sii_write_request_release(struct kref *);
+
 /*****************************************************************************/
 
 /** Register request.
@@ -71,8 +75,11 @@
     size_t length; /**< Number of bytes. */
     uint8_t *data; /**< Data to write / memory for read data. */
     ec_internal_request_state_t state; /**< State of the request. */
+    struct kref refcount;
 } ec_reg_request_t;
 
+void ec_master_reg_request_release(struct kref *);
+
 /*****************************************************************************/
 
 /** Slave/SDO request record for master's SDO request list.
@@ -81,8 +88,11 @@
     struct list_head list; /**< List element. */
     ec_slave_t *slave; /**< Slave. */
     ec_sdo_request_t req; /**< SDO request. */
+    struct kref refcount;
 } ec_master_sdo_request_t;
 
+void ec_master_sdo_request_release(struct kref *);
+
 /*****************************************************************************/
 
 /** FoE request.
@@ -91,8 +101,11 @@
     struct list_head list; /**< List head. */
     ec_slave_t *slave; /**< EtherCAT slave. */
     ec_foe_request_t req; /**< FoE request. */
+    struct kref refcount;
 } ec_master_foe_request_t;
 
+void ec_master_foe_request_release(struct kref *);
+
 /*****************************************************************************/
 
 /** SoE request.
@@ -101,8 +114,11 @@
     struct list_head list; /**< List head. */
     ec_slave_t *slave; /**< EtherCAT slave. */
     ec_soe_request_t req; /**< SoE request. */
+    struct kref refcount;
 } ec_master_soe_request_t;
 
+void ec_master_soe_request_release(struct kref *);
+
 /*****************************************************************************/
 
 typedef struct ec_fsm_master ec_fsm_master_t; /**< \see ec_fsm_master */
@@ -112,6 +128,7 @@
 struct ec_fsm_master {
     ec_master_t *master; /**< master the FSM runs on */
     ec_datagram_t *datagram; /**< datagram used in the state machine */
+    ec_mailbox_t* mbox; /**< mailbox used in the CoE state machine */
     unsigned int retries; /**< retries on datagram timeout. */
 
     void (*state)(ec_fsm_master_t *); /**< master state function */