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/** @addtogroup MCD_IMPL_LIB
* @{
* @file
* <!-- Copyright Giesecke & Devrient GmbH 2009 - 2011 -->
*/
#ifndef SESSION_H_
#define SESSION_H_
#include "common.h"
#include <linux/list.h>
#include "connection.h"
typedef struct {
addr_t virtAddr; /**< The virtual address of the Bulk buffer*/
uint32_t len; /**< Length of the Bulk buffer*/
uint32_t handle;
addr_t physAddrWsmL2; /**< The physical address of the L2 table of the Bulk buffer*/
struct list_head list; /**< The list param for using the kernel lists*/
} bulkBufferDescriptor_t;
bulkBufferDescriptor_t* bulkBufferDescriptor_create(
addr_t virtAddr,
uint32_t len,
uint32_t handle,
addr_t physAddrWsmL2
);
typedef struct list_head bulkBufferDescrVector_t;
/** Session states.
* At the moment not used !!.
*/
typedef enum
{
SESSION_STATE_INITIAL,
SESSION_STATE_OPEN,
SESSION_STATE_TRUSTLET_DEAD
} sessionState_t;
#define SESSION_ERR_NO 0 /**< No session error */
/** Session information structure.
* The information structure is used to hold the state of the session, which will limit further actions for the session.
* Also the last error code will be stored till it's read.
*/
typedef struct {
sessionState_t state; /**< Session state */
int32_t lastErr; /**< Last error of session */
} sessionInformation_t;
typedef struct {
struct mcInstance *pInstance;
bulkBufferDescrVector_t bulkBufferDescriptors; /**< Descriptors of additional bulk buffer of a session */
sessionInformation_t sessionInfo; /**< Informations about session */
uint32_t sessionId;
connection_t *notificationConnection;
struct list_head list; /**< The list param for using the kernel lists*/
} session_t;
session_t* session_create(
uint32_t sessionId,
void *pInstance,
connection_t *connection
);
void session_cleanup(
session_t *session
);
/**
* Add address information of additional bulk buffer memory to session and
* register virtual memory in kernel module.
*
* @attention The virtual address can only be added one time. If the virtual address already exist, NULL is returned.
*
* @param buf The virtual address of bulk buffer.
* @param len Length of bulk buffer.
*
* @return On success the actual Bulk buffer descriptor with all address information is retured, NULL if an error occurs.
*/
bulkBufferDescriptor_t * session_addBulkBuf(
session_t *session,
addr_t buf,
uint32_t len
);
/**
* Remove address information of additional bulk buffer memory from session and
* unregister virtual memory in kernel module
*
* @param buf The virtual address of the bulk buffer.
*
* @return true on success.
*/
bool session_removeBulkBuf(
session_t *session,
addr_t buf
);
/**
* Set additional error information of the last error that occured.
*
* @param errorCode The actual error.
*/
void session_setErrorInfo(
session_t *session,
int32_t err
);
/**
* Get additional error information of the last error that occured.
*
* @attention After request the information is set to SESSION_ERR_NO.
*
* @return Last stored error code or SESSION_ERR_NO.
*/
int32_t session_getLastErr(
session_t *session
);
typedef struct list_head sessionVector_t;
#endif /* SESSION_H_ */
/** @} */
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