Commit 179e44d4 authored by Steve French's avatar Steve French
Browse files

smb3: add tracepoint for sending lease break responses to server 



Be able to log a ftrace message on success and/or failure of
sending a lease break response to the server.

Example output:

           TASK-PID   CPU#  ||||    TIMESTAMP  FUNCTION
             | |       |   ||||       |         |
     kworker/1:1-5681  [001] .... 11123.530457: smb3_lease_done: sid=0x291e3e0f tid=0x8ba43071 lease_key=0x1852ca0d3ecd9b55847750a86716fde lease_state=0x0

Signed-off-by: default avatarSteve French <stfrench@microsoft.com>
Reviewed-by: default avatarAurelien Aptel <aaptel@suse.com>
parent 9b9c5bea

fs/cifs/smb2pdu.c

+9 −1
Original line number Diff line number Diff line
@@ -4277,6 +4277,8 @@ SMB2_lease_break(const unsigned int xid, struct cifs_tcon *tcon, 
	struct kvec iov[1];

	struct kvec rsp_iov;

	int resp_buf_type;

	__u64 *please_key_high;

	__u64 *please_key_low;



	cifs_dbg(FYI, "SMB2_lease_break\n");

	rc = smb2_plain_req_init(SMB2_OPLOCK_BREAK, tcon, (void **) &req,
@@ -4306,10 +4308,16 @@ SMB2_lease_break(const unsigned int xid, struct cifs_tcon *tcon, 
	rc = cifs_send_recv(xid, ses, &rqst, &resp_buf_type, flags, &rsp_iov);

	cifs_small_buf_release(req);



	please_key_low = (__u64 *)req->LeaseKey;

	please_key_high = (__u64 *)(req->LeaseKey+8);

	if (rc) {

		cifs_stats_fail_inc(tcon, SMB2_OPLOCK_BREAK_HE);

		trace_smb3_lease_err(le32_to_cpu(lease_state), tcon->tid,

			ses->Suid, *please_key_low, *please_key_high, rc);

		cifs_dbg(FYI, "Send error in Lease Break = %d\n", rc);

	}

	} else

		trace_smb3_lease_done(le32_to_cpu(lease_state), tcon->tid,

			ses->Suid, *please_key_low, *please_key_high);



	return rc;

}

fs/cifs/trace.h

+79 −0
Original line number Diff line number Diff line
@@ -460,6 +460,85 @@ DEFINE_EVENT(smb3_open_done_class, smb3_##name, \ 
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),

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