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/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* Copyright (C) 2025, LG Electronics.
* Author(s): Hyunchul Lee <hyc.lee@gmail.com>
* Copyright (C) 2025, Samsung Electronics.
* Author(s): Vedansh Bhardwaj <v.bhardwaj@samsung.com>
*/
#ifndef __KSMBD_STATS_H__
#define __KSMBD_STATS_H__
#include "../common/smb2status.h"
#define KSMBD_COUNTER_MAX_REQS 19
enum {
KSMBD_COUNTER_SESSIONS = 0,
KSMBD_COUNTER_TREE_CONNS,
KSMBD_COUNTER_REQUESTS,
KSMBD_COUNTER_STATUS_SUCCESS,
KSMBD_COUNTER_STATUS_INFORMATIONAL,
KSMBD_COUNTER_STATUS_WARNING,
KSMBD_COUNTER_STATUS_ERROR,
KSMBD_COUNTER_ERROR_ACCESS_DENIED,
KSMBD_COUNTER_ERROR_NOT_FOUND,
KSMBD_COUNTER_ERROR_INVALID_PARAMETER,
KSMBD_COUNTER_ERROR_SHARING_VIOLATION,
KSMBD_COUNTER_ERROR_NOT_SUPPORTED,
KSMBD_COUNTER_ERROR_OTHER,
KSMBD_COUNTER_READ_BYTES,
KSMBD_COUNTER_WRITE_BYTES,
KSMBD_COUNTER_FIRST_REQ,
KSMBD_COUNTER_LAST_REQ = KSMBD_COUNTER_FIRST_REQ +
KSMBD_COUNTER_MAX_REQS - 1,
KSMBD_COUNTER_MAX,
};
#ifdef CONFIG_PROC_FS
extern struct ksmbd_counters ksmbd_counters;
struct ksmbd_counters {
struct percpu_counter counters[KSMBD_COUNTER_MAX];
};
static inline void ksmbd_counter_inc(int type)
{
percpu_counter_inc(&ksmbd_counters.counters[type]);
}
static inline void ksmbd_counter_dec(int type)
{
percpu_counter_dec(&ksmbd_counters.counters[type]);
}
static inline void ksmbd_counter_add(int type, s64 value)
{
percpu_counter_add(&ksmbd_counters.counters[type], value);
}
static inline void ksmbd_counter_sub(int type, s64 value)
{
percpu_counter_sub(&ksmbd_counters.counters[type], value);
}
static inline void ksmbd_counter_inc_reqs(unsigned int cmd, __le32 status)
{
unsigned int severity = le32_to_cpu(status) >> 30;
int type;
switch (severity) {
case 0:
type = KSMBD_COUNTER_STATUS_SUCCESS;
break;
case 1:
type = KSMBD_COUNTER_STATUS_INFORMATIONAL;
break;
case 2:
type = KSMBD_COUNTER_STATUS_WARNING;
break;
default:
type = KSMBD_COUNTER_STATUS_ERROR;
break;
}
percpu_counter_inc(&ksmbd_counters.counters[type]);
if (severity == 3) {
if (status == STATUS_ACCESS_DENIED)
type = KSMBD_COUNTER_ERROR_ACCESS_DENIED;
else if (status == STATUS_OBJECT_NAME_NOT_FOUND ||
status == STATUS_NO_SUCH_FILE)
type = KSMBD_COUNTER_ERROR_NOT_FOUND;
else if (status == STATUS_INVALID_PARAMETER)
type = KSMBD_COUNTER_ERROR_INVALID_PARAMETER;
else if (status == STATUS_SHARING_VIOLATION)
type = KSMBD_COUNTER_ERROR_SHARING_VIOLATION;
else if (status == STATUS_NOT_SUPPORTED ||
status == STATUS_NOT_IMPLEMENTED)
type = KSMBD_COUNTER_ERROR_NOT_SUPPORTED;
else
type = KSMBD_COUNTER_ERROR_OTHER;
percpu_counter_inc(&ksmbd_counters.counters[type]);
}
if (cmd < KSMBD_COUNTER_MAX_REQS) {
percpu_counter_inc(&ksmbd_counters.counters[KSMBD_COUNTER_REQUESTS]);
percpu_counter_inc(&ksmbd_counters.counters[KSMBD_COUNTER_FIRST_REQ + cmd]);
}
}
static inline s64 ksmbd_counter_sum(int type)
{
return percpu_counter_sum_positive(&ksmbd_counters.counters[type]);
}
#else
static inline void ksmbd_counter_inc(int type) {}
static inline void ksmbd_counter_dec(int type) {}
static inline void ksmbd_counter_add(int type, s64 value) {}
static inline void ksmbd_counter_sub(int type, s64 value) {}
static inline void ksmbd_counter_inc_reqs(unsigned int cmd, __le32 status) {}
static inline s64 ksmbd_counter_sum(int type) { return 0; }
#endif
#endif
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