1/* SPDX-License-Identifier: GPL-2.0-or-later */
2/*
3 *   Copyright (C) 2018 Samsung Electronics Co., Ltd.
4 */
5
6#ifndef __KSMBD_IDA_MANAGEMENT_H__
7#define __KSMBD_IDA_MANAGEMENT_H__
8
9#include <linux/slab.h>
10#include <linux/idr.h>
11
12/*
13 * 2.2.1.6.7 TID Generation
14 *    The value 0xFFFF MUST NOT be used as a valid TID. All other
15 *    possible values for TID, including zero (0x0000), are valid.
16 *    The value 0xFFFF is used to specify all TIDs or no TID,
17 *    depending upon the context in which it is used.
18 */
19int ksmbd_acquire_smb2_tid(struct ida *ida);
20
21/*
22 * 2.2.1.6.8 UID Generation
23 *    The value 0xFFFE was declared reserved in the LAN Manager 1.0
24 *    documentation, so a value of 0xFFFE SHOULD NOT be used as a
25 *    valid UID.<21> All other possible values for a UID, excluding
26 *    zero (0x0000), are valid.
27 */
28int ksmbd_acquire_smb2_uid(struct ida *ida);
29int ksmbd_acquire_async_msg_id(struct ida *ida);
30
31int ksmbd_acquire_id(struct ida *ida);
32
33void ksmbd_release_id(struct ida *ida, int id);
34#endif /* __KSMBD_IDA_MANAGEMENT_H__ */
35