1 files changed, 46 insertions, 0 deletions
diff --git a/fs/smb/server/mgmt/ksmbd_ida.c b/fs/smb/server/mgmt/ksmbd_ida.c
new file mode 100644
index 000000000000..54194d959a5e
--- /dev/null
+++ b/fs/smb/server/mgmt/ksmbd_ida.c
@@ -0,0 +1,46 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ *   Copyright (C) 2018 Samsung Electronics Co., Ltd.
+ */
+
+#include "ksmbd_ida.h"
+
+static inline int __acquire_id(struct ida *ida, int from, int to)
+{
+	return ida_simple_get(ida, from, to, GFP_KERNEL);
+}
+
+int ksmbd_acquire_smb2_tid(struct ida *ida)
+{
+	int id;
+
+	id = __acquire_id(ida, 1, 0xFFFFFFFF);
+
+	return id;
+}
+
+int ksmbd_acquire_smb2_uid(struct ida *ida)
+{
+	int id;
+
+	id = __acquire_id(ida, 1, 0);
+	if (id == 0xFFFE)
+		id = __acquire_id(ida, 1, 0);
+
+	return id;
+}
+
+int ksmbd_acquire_async_msg_id(struct ida *ida)
+{
+	return __acquire_id(ida, 1, 0);
+}
+
+int ksmbd_acquire_id(struct ida *ida)
+{
+	return __acquire_id(ida, 0, 0);
+}
+
+void ksmbd_release_id(struct ida *ida, int id)
+{
+	ida_simple_remove(ida, id);
+}