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linux-next/fs/cifs/trace.h
Steve French f8af49dd17 smb3: add trace point for tree connection 
In debugging certain scenarios, especially reconnect cases,
it can be helpful to have a dynamic trace point for the
result of tree connect.  See sample output below
from a reconnect event. The new event is 'smb3_tcon'

            TASK-PID   CPU#  ||||    TIMESTAMP  FUNCTION
               | |       |   ||||       |         |
           cifsd-6071  [001] ....  2659.897923: smb3_reconnect: server=localhost current_mid=0xa
     kworker/1:1-71    [001] ....  2666.026342: smb3_cmd_done: 	sid=0x0 tid=0x0 cmd=0 mid=0
     kworker/1:1-71    [001] ....  2666.026576: smb3_cmd_err: 	sid=0xc49e1787 tid=0x0 cmd=1 mid=1 status=0xc0000016 rc=-5
     kworker/1:1-71    [001] ....  2666.031677: smb3_cmd_done: 	sid=0xc49e1787 tid=0x0 cmd=1 mid=2
     kworker/1:1-71    [001] ....  2666.031921: smb3_cmd_done: 	sid=0xc49e1787 tid=0x6e78f05f cmd=3 mid=3
     kworker/1:1-71    [001] ....  2666.031923: smb3_tcon: xid=0 sid=0xc49e1787 tid=0x0 unc_name=\\localhost\test rc=0
     kworker/1:1-71    [001] ....  2666.032097: smb3_cmd_done: 	sid=0xc49e1787 tid=0x6e78f05f cmd=11 mid=4
     kworker/1:1-71    [001] ....  2666.032265: smb3_cmd_done: 	sid=0xc49e1787 tid=0x7912332f cmd=3 mid=5
     kworker/1:1-71    [001] ....  2666.032266: smb3_tcon: xid=0 sid=0xc49e1787 tid=0x0 unc_name=\\localhost\IPC$ rc=0
     kworker/1:1-71    [001] ....  2666.032386: smb3_cmd_done: 	sid=0xc49e1787 tid=0x7912332f cmd=11 mid=6

Signed-off-by: Steve French <stfrench@microsoft.com>
Reviewed-by: Ronnie Sahlberg <lsahlber@redhat.com>
2018-11-02 14:09:41 -05:00

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/* SPDX-License-Identifier: GPL-2.0 */
/*
* Copyright (C) 2018, Microsoft Corporation.
*
* Author(s): Steve French <stfrench@microsoft.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
* the GNU General Public License for more details.
*/
#undef TRACE_SYSTEM
#define TRACE_SYSTEM cifs
#if !defined(_CIFS_TRACE_H) || defined(TRACE_HEADER_MULTI_READ)
#define _CIFS_TRACE_H
#include <linux/tracepoint.h>
/* For logging errors in read or write */
DECLARE_EVENT_CLASS(smb3_rw_err_class,
TP_PROTO(unsigned int xid,
__u64 fid,
__u32 tid,
__u64 sesid,
__u64 offset,
__u32 len,
int rc),
TP_ARGS(xid, fid, tid, sesid, offset, len, rc),
TP_STRUCT__entry(
__field(unsigned int, xid)
__field(__u64, fid)
__field(__u32, tid)
__field(__u64, sesid)
__field(__u64, offset)
__field(__u32, len)
__field(int, rc)
),
TP_fast_assign(
__entry->xid = xid;
__entry->fid = fid;
__entry->tid = tid;
__entry->sesid = sesid;
__entry->offset = offset;
__entry->len = len;
__entry->rc = rc;
),
TP_printk("\txid=%u sid=0x%llx tid=0x%x fid=0x%llx offset=0x%llx len=0x%x rc=%d",
__entry->xid, __entry->sesid, __entry->tid, __entry->fid,
__entry->offset, __entry->len, __entry->rc)
)
#define DEFINE_SMB3_RW_ERR_EVENT(name) \
DEFINE_EVENT(smb3_rw_err_class, smb3_##name, \
TP_PROTO(unsigned int xid, \
__u64 fid, \
__u32 tid, \
__u64 sesid, \
__u64 offset, \
__u32 len, \
int rc), \
TP_ARGS(xid, fid, tid, sesid, offset, len, rc))
DEFINE_SMB3_RW_ERR_EVENT(write_err);
DEFINE_SMB3_RW_ERR_EVENT(read_err);
/* For logging successful read or write */
DECLARE_EVENT_CLASS(smb3_rw_done_class,
TP_PROTO(unsigned int xid,
__u64 fid,
__u32 tid,
__u64 sesid,
__u64 offset,
__u32 len),
TP_ARGS(xid, fid, tid, sesid, offset, len),
TP_STRUCT__entry(
__field(unsigned int, xid)
__field(__u64, fid)
__field(__u32, tid)
__field(__u64, sesid)
__field(__u64, offset)
__field(__u32, len)
),
TP_fast_assign(
__entry->xid = xid;
__entry->fid = fid;
__entry->tid = tid;
__entry->sesid = sesid;
__entry->offset = offset;
__entry->len = len;
),
TP_printk("xid=%u sid=0x%llx tid=0x%x fid=0x%llx offset=0x%llx len=0x%x",
__entry->xid, __entry->sesid, __entry->tid, __entry->fid,
__entry->offset, __entry->len)
)
#define DEFINE_SMB3_RW_DONE_EVENT(name) \
DEFINE_EVENT(smb3_rw_done_class, smb3_##name, \
TP_PROTO(unsigned int xid, \
__u64 fid, \
__u32 tid, \
__u64 sesid, \
__u64 offset, \
__u32 len), \
TP_ARGS(xid, fid, tid, sesid, offset, len))
DEFINE_SMB3_RW_DONE_EVENT(write_done);
DEFINE_SMB3_RW_DONE_EVENT(read_done);
/*
* For handle based calls other than read and write, and get/set info
*/
DECLARE_EVENT_CLASS(smb3_fd_err_class,
TP_PROTO(unsigned int xid,
__u64 fid,
__u32 tid,
__u64 sesid,
int rc),
TP_ARGS(xid, fid, tid, sesid, rc),
TP_STRUCT__entry(
__field(unsigned int, xid)
__field(__u64, fid)
__field(__u32, tid)
__field(__u64, sesid)
__field(int, rc)
),
TP_fast_assign(
__entry->xid = xid;
__entry->fid = fid;
__entry->tid = tid;
__entry->sesid = sesid;
__entry->rc = rc;
),
TP_printk("\txid=%u sid=0x%llx tid=0x%x fid=0x%llx rc=%d",
__entry->xid, __entry->sesid, __entry->tid, __entry->fid,
__entry->rc)
)
#define DEFINE_SMB3_FD_ERR_EVENT(name) \
DEFINE_EVENT(smb3_fd_err_class, smb3_##name, \
TP_PROTO(unsigned int xid, \
__u64 fid, \
__u32 tid, \
__u64 sesid, \
int rc), \
TP_ARGS(xid, fid, tid, sesid, rc))
DEFINE_SMB3_FD_ERR_EVENT(flush_err);
DEFINE_SMB3_FD_ERR_EVENT(lock_err);
DEFINE_SMB3_FD_ERR_EVENT(close_err);
/*
* For handle based query/set info calls
*/
DECLARE_EVENT_CLASS(smb3_inf_err_class,
TP_PROTO(unsigned int xid,
__u64 fid,
__u32 tid,
__u64 sesid,
__u8 infclass,
__u32 type,
int rc),
TP_ARGS(xid, fid, tid, sesid, infclass, type, rc),
TP_STRUCT__entry(
__field(unsigned int, xid)
__field(__u64, fid)
__field(__u32, tid)
__field(__u64, sesid)
__field(__u8, infclass)
__field(__u32, type)
__field(int, rc)
),
TP_fast_assign(
__entry->xid = xid;
__entry->fid = fid;
__entry->tid = tid;
__entry->sesid = sesid;
__entry->infclass = infclass;
__entry->type = type;
__entry->rc = rc;
),
TP_printk("xid=%u sid=0x%llx tid=0x%x fid=0x%llx class=%u type=0x%x rc=%d",
__entry->xid, __entry->sesid, __entry->tid, __entry->fid,
__entry->infclass, __entry->type, __entry->rc)
)
#define DEFINE_SMB3_INF_ERR_EVENT(name) \
DEFINE_EVENT(smb3_inf_err_class, smb3_##name, \
TP_PROTO(unsigned int xid, \
__u64 fid, \
__u32 tid, \
__u64 sesid, \
__u8 infclass, \
__u32 type, \
int rc), \
TP_ARGS(xid, fid, tid, sesid, infclass, type, rc))
DEFINE_SMB3_INF_ERR_EVENT(query_info_err);
DEFINE_SMB3_INF_ERR_EVENT(set_info_err);
DEFINE_SMB3_INF_ERR_EVENT(fsctl_err);
/*
* For logging SMB3 Status code and Command for responses which return errors
*/
DECLARE_EVENT_CLASS(smb3_cmd_err_class,
TP_PROTO(__u32 tid,
__u64 sesid,
__u16 cmd,
__u64 mid,
__u32 status,
int rc),
TP_ARGS(tid, sesid, cmd, mid, status, rc),
TP_STRUCT__entry(
__field(__u32, tid)
__field(__u64, sesid)
__field(__u16, cmd)
__field(__u64, mid)
__field(__u32, status)
__field(int, rc)
),
TP_fast_assign(
__entry->tid = tid;
__entry->sesid = sesid;
__entry->cmd = cmd;
__entry->mid = mid;
__entry->status = status;
__entry->rc = rc;
),
TP_printk("\tsid=0x%llx tid=0x%x cmd=%u mid=%llu status=0x%x rc=%d",
__entry->sesid, __entry->tid, __entry->cmd, __entry->mid,
__entry->status, __entry->rc)
)
#define DEFINE_SMB3_CMD_ERR_EVENT(name) \
DEFINE_EVENT(smb3_cmd_err_class, smb3_##name, \
TP_PROTO(__u32 tid, \
__u64 sesid, \
__u16 cmd, \
__u64 mid, \
__u32 status, \
int rc), \
TP_ARGS(tid, sesid, cmd, mid, status, rc))
DEFINE_SMB3_CMD_ERR_EVENT(cmd_err);
DECLARE_EVENT_CLASS(smb3_cmd_done_class,
TP_PROTO(__u32 tid,
__u64 sesid,
__u16 cmd,
__u64 mid),
TP_ARGS(tid, sesid, cmd, mid),
TP_STRUCT__entry(
__field(__u32, tid)
__field(__u64, sesid)
__field(__u16, cmd)
__field(__u64, mid)
),
TP_fast_assign(
__entry->tid = tid;
__entry->sesid = sesid;
__entry->cmd = cmd;
__entry->mid = mid;
),
TP_printk("\tsid=0x%llx tid=0x%x cmd=%u mid=%llu",
__entry->sesid, __entry->tid,
__entry->cmd, __entry->mid)
)
#define DEFINE_SMB3_CMD_DONE_EVENT(name) \
DEFINE_EVENT(smb3_cmd_done_class, smb3_##name, \
TP_PROTO(__u32 tid, \
__u64 sesid, \
__u16 cmd, \
__u64 mid), \
TP_ARGS(tid, sesid, cmd, mid))
DEFINE_SMB3_CMD_DONE_EVENT(cmd_done);
DEFINE_SMB3_CMD_DONE_EVENT(ses_expired);
DECLARE_EVENT_CLASS(smb3_mid_class,
TP_PROTO(__u16 cmd,
__u64 mid,
__u32 pid,
unsigned long when_sent,
unsigned long when_received),
TP_ARGS(cmd, mid, pid, when_sent, when_received),
TP_STRUCT__entry(
__field(__u16, cmd)
__field(__u64, mid)
__field(__u32, pid)
__field(unsigned long, when_sent)
__field(unsigned long, when_received)
),
TP_fast_assign(
__entry->cmd = cmd;
__entry->mid = mid;
__entry->pid = pid;
__entry->when_sent = when_sent;
__entry->when_received = when_received;
),
TP_printk("\tcmd=%u mid=%llu pid=%u, when_sent=%lu when_rcv=%lu",
__entry->cmd, __entry->mid, __entry->pid, __entry->when_sent,
__entry->when_received)
)
#define DEFINE_SMB3_MID_EVENT(name) \
DEFINE_EVENT(smb3_mid_class, smb3_##name, \
TP_PROTO(__u16 cmd, \
__u64 mid, \
__u32 pid, \
unsigned long when_sent, \
unsigned long when_received), \
TP_ARGS(cmd, mid, pid, when_sent, when_received))
DEFINE_SMB3_MID_EVENT(slow_rsp);
DECLARE_EVENT_CLASS(smb3_exit_err_class,
TP_PROTO(unsigned int xid,
const char *func_name,
int rc),
TP_ARGS(xid, func_name, rc),
TP_STRUCT__entry(
__field(unsigned int, xid)
__field(const char *, func_name)
__field(int, rc)
),
TP_fast_assign(
__entry->xid = xid;
__entry->func_name = func_name;
__entry->rc = rc;
),
TP_printk("\t%s: xid=%u rc=%d",
__entry->func_name, __entry->xid, __entry->rc)
)
#define DEFINE_SMB3_EXIT_ERR_EVENT(name) \
DEFINE_EVENT(smb3_exit_err_class, smb3_##name, \
TP_PROTO(unsigned int xid, \
const char *func_name, \
int rc), \
TP_ARGS(xid, func_name, rc))
DEFINE_SMB3_EXIT_ERR_EVENT(exit_err);
DECLARE_EVENT_CLASS(smb3_enter_exit_class,
TP_PROTO(unsigned int xid,
const char *func_name),
TP_ARGS(xid, func_name),
TP_STRUCT__entry(
__field(unsigned int, xid)
__field(const char *, func_name)
),
TP_fast_assign(
__entry->xid = xid;
__entry->func_name = func_name;
),
TP_printk("\t%s: xid=%u",
__entry->func_name, __entry->xid)
)
#define DEFINE_SMB3_ENTER_EXIT_EVENT(name) \
DEFINE_EVENT(smb3_enter_exit_class, smb3_##name, \
TP_PROTO(unsigned int xid, \
const char *func_name), \
TP_ARGS(xid, func_name))
DEFINE_SMB3_ENTER_EXIT_EVENT(enter);
DEFINE_SMB3_ENTER_EXIT_EVENT(exit_done);
/*
* For SMB2/SMB3 tree connect
*/
DECLARE_EVENT_CLASS(smb3_tcon_class,
TP_PROTO(unsigned int xid,
__u32 tid,
__u64 sesid,
const char *unc_name,
int rc),
TP_ARGS(xid, tid, sesid, unc_name, rc),
TP_STRUCT__entry(
__field(unsigned int, xid)
__field(__u32, tid)
__field(__u64, sesid)
__field(const char *, unc_name)
__field(int, rc)
),
TP_fast_assign(
__entry->xid = xid;
__entry->tid = tid;
__entry->sesid = sesid;
__entry->unc_name = unc_name;
__entry->rc = rc;
),
TP_printk("xid=%u sid=0x%llx tid=0x%x unc_name=%s rc=%d",
__entry->xid, __entry->sesid, __entry->tid,
__entry->unc_name, __entry->rc)
)
#define DEFINE_SMB3_TCON_EVENT(name) \
DEFINE_EVENT(smb3_tcon_class, smb3_##name, \
TP_PROTO(unsigned int xid, \
__u32 tid, \
__u64 sesid, \
const char *unc_name, \
int rc), \
TP_ARGS(xid, tid, sesid, unc_name, rc))
DEFINE_SMB3_TCON_EVENT(tcon);
/*
* For smb2/smb3 open call
*/
DECLARE_EVENT_CLASS(smb3_open_err_class,
TP_PROTO(unsigned int xid,
__u32 tid,
__u64 sesid,
int create_options,
int desired_access,
int rc),
TP_ARGS(xid, tid, sesid, create_options, desired_access, rc),
TP_STRUCT__entry(
__field(unsigned int, xid)
__field(__u32, tid)
__field(__u64, sesid)
__field(int, create_options)
__field(int, desired_access)
__field(int, rc)
),
TP_fast_assign(
__entry->xid = xid;
__entry->tid = tid;
__entry->sesid = sesid;
__entry->create_options = create_options;
__entry->desired_access = desired_access;
__entry->rc = rc;
),
TP_printk("xid=%u sid=0x%llx tid=0x%x cr_opts=0x%x des_access=0x%x rc=%d",
__entry->xid, __entry->sesid, __entry->tid,
__entry->create_options, __entry->desired_access, __entry->rc)
)
#define DEFINE_SMB3_OPEN_ERR_EVENT(name) \
DEFINE_EVENT(smb3_open_err_class, smb3_##name, \
TP_PROTO(unsigned int xid, \
__u32 tid, \
__u64 sesid, \
int create_options, \
int desired_access, \
int rc), \
TP_ARGS(xid, tid, sesid, create_options, desired_access, rc))
DEFINE_SMB3_OPEN_ERR_EVENT(open_err);
DEFINE_SMB3_OPEN_ERR_EVENT(posix_mkdir_err);
DECLARE_EVENT_CLASS(smb3_open_done_class,
TP_PROTO(unsigned int xid,
__u64 fid,
__u32 tid,
__u64 sesid,
int create_options,
int desired_access),
TP_ARGS(xid, fid, tid, sesid, create_options, desired_access),
TP_STRUCT__entry(
__field(unsigned int, xid)
__field(__u64, fid)
__field(__u32, tid)
__field(__u64, sesid)
__field(int, create_options)
__field(int, desired_access)
),
TP_fast_assign(
__entry->xid = xid;
__entry->fid = fid;
__entry->tid = tid;
__entry->sesid = sesid;
__entry->create_options = create_options;
__entry->desired_access = desired_access;
),
TP_printk("xid=%u sid=0x%llx tid=0x%x fid=0x%llx cr_opts=0x%x des_access=0x%x",
__entry->xid, __entry->sesid, __entry->tid, __entry->fid,
__entry->create_options, __entry->desired_access)
)
#define DEFINE_SMB3_OPEN_DONE_EVENT(name) \
DEFINE_EVENT(smb3_open_done_class, smb3_##name, \
TP_PROTO(unsigned int xid, \
__u64 fid, \
__u32 tid, \
__u64 sesid, \
int create_options, \
int desired_access), \
TP_ARGS(xid, fid, tid, sesid, create_options, desired_access))
DEFINE_SMB3_OPEN_DONE_EVENT(open_done);
DEFINE_SMB3_OPEN_DONE_EVENT(posix_mkdir_done);
DECLARE_EVENT_CLASS(smb3_lease_done_class,
TP_PROTO(__u32 lease_state,
__u32 tid,
__u64 sesid,
__u64 lease_key_low,
__u64 lease_key_high),
TP_ARGS(lease_state, tid, sesid, lease_key_low, lease_key_high),
TP_STRUCT__entry(
__field(__u32, lease_state)
__field(__u32, tid)
__field(__u64, sesid)
__field(__u64, lease_key_low)
__field(__u64, lease_key_high)
),
TP_fast_assign(
__entry->lease_state = lease_state;
__entry->tid = tid;
__entry->sesid = sesid;
__entry->lease_key_low = lease_key_low;
__entry->lease_key_high = lease_key_high;
),
TP_printk("sid=0x%llx tid=0x%x lease_key=0x%llx%llx lease_state=0x%x",
__entry->sesid, __entry->tid, __entry->lease_key_high,
__entry->lease_key_low, __entry->lease_state)
)
#define DEFINE_SMB3_LEASE_DONE_EVENT(name) \
DEFINE_EVENT(smb3_lease_done_class, smb3_##name, \
TP_PROTO(__u32 lease_state, \
__u32 tid, \
__u64 sesid, \
__u64 lease_key_low, \
__u64 lease_key_high), \
TP_ARGS(lease_state, tid, sesid, lease_key_low, lease_key_high))
DEFINE_SMB3_LEASE_DONE_EVENT(lease_done);
DECLARE_EVENT_CLASS(smb3_lease_err_class,
TP_PROTO(__u32 lease_state,
__u32 tid,
__u64 sesid,
__u64 lease_key_low,
__u64 lease_key_high,
int rc),
TP_ARGS(lease_state, tid, sesid, lease_key_low, lease_key_high, rc),
TP_STRUCT__entry(
__field(__u32, lease_state)
__field(__u32, tid)
__field(__u64, sesid)
__field(__u64, lease_key_low)
__field(__u64, lease_key_high)
__field(int, rc)
),
TP_fast_assign(
__entry->lease_state = lease_state;
__entry->tid = tid;
__entry->sesid = sesid;
__entry->lease_key_low = lease_key_low;
__entry->lease_key_high = lease_key_high;
__entry->rc = rc;
),
TP_printk("sid=0x%llx tid=0x%x lease_key=0x%llx%llx lease_state=0x%x rc=%d",
__entry->sesid, __entry->tid, __entry->lease_key_high,
__entry->lease_key_low, __entry->lease_state, __entry->rc)
)
#define DEFINE_SMB3_LEASE_ERR_EVENT(name) \
DEFINE_EVENT(smb3_lease_err_class, smb3_##name, \
TP_PROTO(__u32 lease_state, \
__u32 tid, \
__u64 sesid, \
__u64 lease_key_low, \
__u64 lease_key_high, \
int rc), \
TP_ARGS(lease_state, tid, sesid, lease_key_low, lease_key_high, rc))
DEFINE_SMB3_LEASE_ERR_EVENT(lease_err);
DECLARE_EVENT_CLASS(smb3_reconnect_class,
TP_PROTO(__u64 currmid,
char *hostname),
TP_ARGS(currmid, hostname),
TP_STRUCT__entry(
__field(__u64, currmid)
__field(char *, hostname)
),
TP_fast_assign(
__entry->currmid = currmid;
__entry->hostname = hostname;
),
TP_printk("server=%s current_mid=0x%llx",
__entry->hostname,
__entry->currmid)
)
#define DEFINE_SMB3_RECONNECT_EVENT(name) \
DEFINE_EVENT(smb3_reconnect_class, smb3_##name, \
TP_PROTO(__u64 currmid, \
char *hostname), \
TP_ARGS(currmid, hostname))
DEFINE_SMB3_RECONNECT_EVENT(reconnect);
DEFINE_SMB3_RECONNECT_EVENT(partial_send_reconnect);
DECLARE_EVENT_CLASS(smb3_credit_class,
TP_PROTO(__u64 currmid,
char *hostname,
int credits),
TP_ARGS(currmid, hostname, credits),
TP_STRUCT__entry(
__field(__u64, currmid)
__field(char *, hostname)
__field(int, credits)
),
TP_fast_assign(
__entry->currmid = currmid;
__entry->hostname = hostname;
__entry->credits = credits;
),
TP_printk("server=%s current_mid=0x%llx credits=%d",
__entry->hostname,
__entry->currmid,
__entry->credits)
)
#define DEFINE_SMB3_CREDIT_EVENT(name) \
DEFINE_EVENT(smb3_credit_class, smb3_##name, \
TP_PROTO(__u64 currmid, \
char *hostname, \
int credits), \
TP_ARGS(currmid, hostname, credits))
DEFINE_SMB3_CREDIT_EVENT(reconnect_with_invalid_credits);
#endif /* _CIFS_TRACE_H */
#undef TRACE_INCLUDE_PATH
#define TRACE_INCLUDE_PATH .
#define TRACE_INCLUDE_FILE trace
#include <trace/define_trace.h>
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