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/*
* COPYRIGHT (c) International Business Machines Corp. 2021
*
* This program is provided under the terms of the Common Public License,
* version 1.0 (CPL-1.0). Any use, reproduction or distribution for this
* software constitutes recipient's acceptance of CPL-1.0 terms which can be
* found in the file LICENSE file or at
* https://opensource.org/licenses/cpl1.0.php
*/
#ifndef OCK_STATISTICS_H
#define OCK_STATISTICS_H
#include <pkcs11types.h>
#include "slotmgr.h"
#include "mechtable.h"
#include "supportedstrengths.h"
/*
* Statistics are collected in a shared memory segment per user.
* The statistics shared memory segment has the following layout:
* - For each configured slot:
* - For each supported mechanism:
* - one counter (counter_t) for non-key mechanisms (strength=0)
* - one counter for each supported strength (counter_t each)
*
* The size of the shared segment therefore is:
* Num configured slots * num supp.mechanisms * (num supp. strength + 1) *
* size of a counter
*/
typedef CK_ULONG counter_t;
#define STAT_MECH_SIZE ((NUM_SUPPORTED_STRENGTHS + 1) * sizeof(counter_t))
#define STAT_SLOT_SIZE (MECHTABLE_NUM_ELEMS * STAT_MECH_SIZE)
struct statistics;
typedef struct statistics *statistics_t;
typedef CK_RV (*statistics_increment_f)(struct statistics *statistics,
CK_SLOT_ID slot,
const CK_MECHANISM *mech,
CK_ULONG strength);
#define STATISTICS_FLAG_COUNT_IMPLICIT (1 << 0)
#define STATISTICS_FLAG_COUNT_INTERNAL (1 << 1)
struct statistics {
CK_ULONG flags;
CK_ULONG num_slots;
CK_ULONG slot_shm_offsets[NUMBER_SLOTS_MANAGED];
CK_ULONG shm_size;
char shm_name[PATH_MAX];
CK_BYTE *shm_data;
statistics_increment_f increment_func; /* NULL if statistics disabled */
};
#define INC_COUNTER(tokdata, sess, mech, key, no_key_strength) \
do { \
if ((tokdata)->statistics->increment_func != NULL) \
(tokdata)->statistics->increment_func((tokdata)->statistics, \
(sess)->session_info.slotID, (mech), (key) != NULL ? \
((OBJECT *)(key))->strength.strength : (no_key_strength));\
} while (0)
CK_RV statistics_init(struct statistics *statistics,
Slot_Mgr_Socket_t *slots_infos, CK_ULONG flags,
uid_t uid);
void statistics_term(struct statistics *statistics);
#endif
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