smb: client: add oplock level to smb3_open_done tracepoint

Add an oplock field to the smb3_open_done_class trace event to
show the granted oplock/lease level. Move the trace_smb3_open_done
call after smb2_parse_contexts() so the oplock value reflects
the parsed lease state (R/W/H flags).

Signed-off-by: Bharath SM <bharathsm@microsoft.com>
Signed-off-by: Steve French <stfrench@microsoft.com>

Author: bharathsm-ms

fs/smb/client/smb2pdu.c

@@ -3044,7 +3044,8 @@ int smb311_posix_mkdir(const unsigned int xid, struct inode *inode,
 	}
 
 	trace_smb3_posix_mkdir_done(xid, rsp->PersistentFileId, tcon->tid, ses->Suid,
-				    CREATE_NOT_FILE, FILE_WRITE_ATTRIBUTES);
+				    CREATE_NOT_FILE, FILE_WRITE_ATTRIBUTES,
+				    rsp->OplockLevel);
 
 	SMB2_close(xid, tcon, rsp->PersistentFileId, rsp->VolatileFileId);
 
@@ -3321,9 +3322,6 @@ SMB2_open(const unsigned int xid, struct cifs_open_parms *oparms, __le16 *path,
 		goto creat_exit;
 	} else if (rsp == NULL) /* unlikely to happen, but safer to check */
 		goto creat_exit;
-	else
-		trace_smb3_open_done(xid, rsp->PersistentFileId, tcon->tid, ses->Suid,
-				     oparms->create_options, oparms->desired_access);
 
 	atomic_inc(&tcon->num_remote_opens);
 	oparms->fid->persistent_fid = rsp->PersistentFileId;
@@ -3348,6 +3346,10 @@ SMB2_open(const unsigned int xid, struct cifs_open_parms *oparms, __le16 *path,
 
 	rc = smb2_parse_contexts(server, &rsp_iov, &oparms->fid->epoch,
 				 oparms->fid->lease_key, oplock, buf, posix);
+
+	trace_smb3_open_done(xid, rsp->PersistentFileId, tcon->tid, ses->Suid,
+			     oparms->create_options, oparms->desired_access,
+			     *oplock);
 creat_exit:
 	SMB2_open_free(&rqst);
 	free_rsp_buf(resp_buftype, rsp);

fs/smb/client/trace.h

@@ -1321,15 +1321,17 @@ DECLARE_EVENT_CLASS(smb3_open_done_class,
 		__u32	tid,
 		__u64	sesid,
 		int	create_options,
-		int	desired_access),
-	TP_ARGS(xid, fid, tid, sesid, create_options, desired_access),
+		int	desired_access,
+		__u8	oplock),
+	TP_ARGS(xid, fid, tid, sesid, create_options, desired_access, oplock),
 	TP_STRUCT__entry(
 		__field(unsigned int, xid)
 		__field(__u64, fid)
 		__field(__u32, tid)
 		__field(__u64, sesid)
 		__field(int, create_options)
 		__field(int, desired_access)
+		__field(__u8, oplock)
 	),
 	TP_fast_assign(
 		__entry->xid = xid;
@@ -1338,10 +1340,11 @@ DECLARE_EVENT_CLASS(smb3_open_done_class,
 		__entry->sesid = sesid;
 		__entry->create_options = create_options;
 		__entry->desired_access = desired_access;
+		__entry->oplock = oplock;
 	),
-	TP_printk("xid=%u sid=0x%llx tid=0x%x fid=0x%llx cr_opts=0x%x des_access=0x%x",
+	TP_printk("xid=%u sid=0x%llx tid=0x%x fid=0x%llx cr_opts=0x%x des_access=0x%x oplock=0x%x",
 		__entry->xid, __entry->sesid, __entry->tid, __entry->fid,
-		__entry->create_options, __entry->desired_access)
+		__entry->create_options, __entry->desired_access, __entry->oplock)
 )
 
 #define DEFINE_SMB3_OPEN_DONE_EVENT(name)        \
@@ -1351,8 +1354,9 @@ DEFINE_EVENT(smb3_open_done_class, smb3_##name,  \
 		__u32	tid,			\
 		__u64	sesid,			\
 		int	create_options,		\
-		int	desired_access),	\
-	TP_ARGS(xid, fid, tid, sesid, create_options, desired_access))
+		int	desired_access,		\
+		__u8	oplock),		\
+	TP_ARGS(xid, fid, tid, sesid, create_options, desired_access, oplock))
 
 DEFINE_SMB3_OPEN_DONE_EVENT(open_done);
 DEFINE_SMB3_OPEN_DONE_EVENT(posix_mkdir_done);