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b38f99c121
This patch introduces a /proc filesystem interface to ksmbd, providing visibility into the internal state of the SMB server. This allows administrators and developers to monitor active connections, user sessions, and opened files in real-time without relying on external tools or heavy debugging. Key changes include: - Connection Monitoring (/proc/fs/ksmbd/clients): Displays a list of active network connections, including client IP addresses, SMB dialects, credits, and last active timestamps. - Session Management (/proc/fs/ksmbd/sessions/): Adds a global sessions file to list all authenticated users and their session IDs. - Creates individual session entries (e.g., /proc/fs/ksmbd/sessions/<id>) detailing capabilities (DFS, Multi-channel, etc.), signing/encryption algorithms, and connected tree shares. - File Tracking (/proc/fs/ksmbd/files): Shows all currently opened files across the server, including tree IDs, process IDs (PID), access modes (daccess/saccess), and oplock/lease states. - Statistics & Counters: Implements internal counters for global server metrics, such as the number of tree connections, total sessions, and processed read/write bytes. Signed-off-by: Hyunchul Lee <hyc.lee@gmail.com> Signed-off-by: Bahubali B Gumaji <bahubali.bg@samsung.com> Signed-off-by: Sang-Soo Lee <constant.lee@samsung.com> Signed-off-by: Namjae Jeon <linkinjeon@kernel.org> Signed-off-by: Steve French <stfrench@microsoft.com>
73 lines
1.8 KiB
C
73 lines
1.8 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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* Copyright (C) 2025, LG Electronics.
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* Author(s): Hyunchul Lee <hyc.lee@gmail.com>
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* Copyright (C) 2025, Samsung Electronics.
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* Author(s): Vedansh Bhardwaj <v.bhardwaj@samsung.com>
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*/
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#ifndef __KSMBD_STATS_H__
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#define __KSMBD_STATS_H__
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#define KSMBD_COUNTER_MAX_REQS 19
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enum {
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KSMBD_COUNTER_SESSIONS = 0,
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KSMBD_COUNTER_TREE_CONNS,
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KSMBD_COUNTER_REQUESTS,
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KSMBD_COUNTER_READ_BYTES,
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KSMBD_COUNTER_WRITE_BYTES,
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KSMBD_COUNTER_FIRST_REQ,
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KSMBD_COUNTER_LAST_REQ = KSMBD_COUNTER_FIRST_REQ +
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KSMBD_COUNTER_MAX_REQS - 1,
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KSMBD_COUNTER_MAX,
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};
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#ifdef CONFIG_PROC_FS
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extern struct ksmbd_counters ksmbd_counters;
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struct ksmbd_counters {
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struct percpu_counter counters[KSMBD_COUNTER_MAX];
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};
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static inline void ksmbd_counter_inc(int type)
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{
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percpu_counter_inc(&ksmbd_counters.counters[type]);
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}
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static inline void ksmbd_counter_dec(int type)
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{
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percpu_counter_dec(&ksmbd_counters.counters[type]);
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}
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static inline void ksmbd_counter_add(int type, s64 value)
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{
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percpu_counter_add(&ksmbd_counters.counters[type], value);
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}
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static inline void ksmbd_counter_sub(int type, s64 value)
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{
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percpu_counter_sub(&ksmbd_counters.counters[type], value);
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}
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static inline void ksmbd_counter_inc_reqs(unsigned int cmd)
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{
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if (cmd < KSMBD_COUNTER_MAX_REQS)
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percpu_counter_inc(&ksmbd_counters.counters[KSMBD_COUNTER_FIRST_REQ + cmd]);
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}
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static inline s64 ksmbd_counter_sum(int type)
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{
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return percpu_counter_sum_positive(&ksmbd_counters.counters[type]);
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}
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#else
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static inline void ksmbd_counter_inc(int type) {}
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static inline void ksmbd_counter_dec(int type) {}
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static inline void ksmbd_counter_add(int type, s64 value) {}
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static inline void ksmbd_counter_sub(int type, s64 value) {}
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static inline void ksmbd_counter_inc_reqs(unsigned int cmd) {}
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static inline s64 ksmbd_counter_sum(int type) { return 0; }
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#endif
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#endif
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