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cifs_debug.h
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cifs_debug.h
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/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
*
* Copyright (c) International Business Machines Corp., 2000,2002
* Modified by Steve French (sfrench@us.ibm.com)
*/
#ifndef _H_CIFS_DEBUG
#define _H_CIFS_DEBUG
#ifdef pr_fmt
#undef pr_fmt
#endif
#define pr_fmt(fmt) "CIFS: " fmt
void cifs_dump_mem(char *label, void *data, int length);
void cifs_dump_detail(void *buf, struct TCP_Server_Info *ptcp_info);
void cifs_dump_mids(struct TCP_Server_Info *);
extern bool traceSMB; /* flag which enables the function below */
void dump_smb(void *, int);
#define CIFS_INFO 0x01
#define CIFS_RC 0x02
#define CIFS_TIMER 0x04
#define VFS 1
#define FYI 2
extern int cifsFYI;
#ifdef CONFIG_CIFS_DEBUG2
#define NOISY 4
#else
#define NOISY 0
#endif
#define ONCE 8
/*
* debug ON
* --------
*/
#ifdef CONFIG_CIFS_DEBUG
/*
* When adding tracepoints and debug messages we have various choices.
* Some considerations:
*
* Use cifs_dbg(VFS, ...) for things we always want logged, and the user to see
* cifs_info(...) slightly less important, admin can filter via loglevel > 6
* cifs_dbg(FYI, ...) minor debugging messages, off by default
* trace_smb3_* ftrace functions are preferred for complex debug messages
* intended for developers or experienced admins, off by default
*/
/* Information level messages, minor events */
#define cifs_info_func(ratefunc, fmt, ...) \
pr_info_ ## ratefunc(fmt, ##__VA_ARGS__)
#define cifs_info(fmt, ...) \
cifs_info_func(ratelimited, fmt, ##__VA_ARGS__)
/* information message: e.g., configuration, major event */
#define cifs_dbg_func(ratefunc, type, fmt, ...) \
do { \
if ((type) & FYI && cifsFYI & CIFS_INFO) { \
pr_debug_ ## ratefunc("%s: " fmt, \
__FILE__, ##__VA_ARGS__); \
} else if ((type) & VFS) { \
pr_err_ ## ratefunc("VFS: " fmt, ##__VA_ARGS__); \
} else if ((type) & NOISY && (NOISY != 0)) { \
pr_debug_ ## ratefunc(fmt, ##__VA_ARGS__); \
} \
} while (0)
#define cifs_dbg(type, fmt, ...) \
do { \
if ((type) & ONCE) \
cifs_dbg_func(once, type, fmt, ##__VA_ARGS__); \
else \
cifs_dbg_func(ratelimited, type, fmt, ##__VA_ARGS__); \
} while (0)
#define cifs_server_dbg_func(ratefunc, type, fmt, ...) \
do { \
spin_lock(&server->srv_lock); \
if ((type) & FYI && cifsFYI & CIFS_INFO) { \
pr_debug_ ## ratefunc("%s: \\\\%s " fmt, \
__FILE__, server->hostname, \
##__VA_ARGS__); \
} else if ((type) & VFS) { \
pr_err_ ## ratefunc("VFS: \\\\%s " fmt, \
server->hostname, ##__VA_ARGS__); \
} else if ((type) & NOISY && (NOISY != 0)) { \
pr_debug_ ## ratefunc("\\\\%s " fmt, \
server->hostname, ##__VA_ARGS__); \
} \
spin_unlock(&server->srv_lock); \
} while (0)
#define cifs_server_dbg(type, fmt, ...) \
do { \
if ((type) & ONCE) \
cifs_server_dbg_func(once, type, fmt, ##__VA_ARGS__); \
else \
cifs_server_dbg_func(ratelimited, type, fmt, \
##__VA_ARGS__); \
} while (0)
#define cifs_tcon_dbg_func(ratefunc, type, fmt, ...) \
do { \
const char *tn = ""; \
if (tcon && tcon->tree_name) \
tn = tcon->tree_name; \
if ((type) & FYI && cifsFYI & CIFS_INFO) { \
pr_debug_ ## ratefunc("%s: %s " fmt, \
__FILE__, tn, ##__VA_ARGS__); \
} else if ((type) & VFS) { \
pr_err_ ## ratefunc("VFS: %s " fmt, tn, ##__VA_ARGS__); \
} else if ((type) & NOISY && (NOISY != 0)) { \
pr_debug_ ## ratefunc("%s " fmt, tn, ##__VA_ARGS__); \
} \
} while (0)
#define cifs_tcon_dbg(type, fmt, ...) \
do { \
if ((type) & ONCE) \
cifs_tcon_dbg_func(once, type, fmt, ##__VA_ARGS__); \
else \
cifs_tcon_dbg_func(ratelimited, type, fmt, \
##__VA_ARGS__); \
} while (0)
/*
* debug OFF
* ---------
*/
#else /* _CIFS_DEBUG */
#define cifs_dbg(type, fmt, ...) \
do { \
if (0) \
pr_debug(fmt, ##__VA_ARGS__); \
} while (0)
#define cifs_server_dbg(type, fmt, ...) \
do { \
if (0) \
pr_debug("\\\\%s " fmt, \
server->hostname, ##__VA_ARGS__); \
} while (0)
#define cifs_tcon_dbg(type, fmt, ...) \
do { \
if (0) \
pr_debug("%s " fmt, tcon->tree_name, ##__VA_ARGS__); \
} while (0)
#define cifs_info(fmt, ...) \
pr_info(fmt, ##__VA_ARGS__)
#endif
#endif /* _H_CIFS_DEBUG */