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