1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * Copyright (C) 2018 Samsung Electronics Co., Ltd.
4 */
5
6 #include "ksmbd_ida.h"
7
__acquire_id(struct ida * ida,int from,int to)8 static inline int __acquire_id(struct ida *ida, int from, int to)
9 {
10 return ida_simple_get(ida, from, to, GFP_KERNEL);
11 }
12
ksmbd_acquire_smb2_tid(struct ida * ida)13 int ksmbd_acquire_smb2_tid(struct ida *ida)
14 {
15 int id;
16
17 id = __acquire_id(ida, 1, 0xFFFFFFFF);
18
19 return id;
20 }
21
ksmbd_acquire_smb2_uid(struct ida * ida)22 int ksmbd_acquire_smb2_uid(struct ida *ida)
23 {
24 int id;
25
26 id = __acquire_id(ida, 1, 0);
27 if (id == 0xFFFE)
28 id = __acquire_id(ida, 1, 0);
29
30 return id;
31 }
32
ksmbd_acquire_async_msg_id(struct ida * ida)33 int ksmbd_acquire_async_msg_id(struct ida *ida)
34 {
35 return __acquire_id(ida, 1, 0);
36 }
37
ksmbd_acquire_id(struct ida * ida)38 int ksmbd_acquire_id(struct ida *ida)
39 {
40 return __acquire_id(ida, 0, 0);
41 }
42
ksmbd_release_id(struct ida * ida,int id)43 void ksmbd_release_id(struct ida *ida, int id)
44 {
45 ida_simple_remove(ida, id);
46 }
47