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 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 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 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 33 int ksmbd_acquire_async_msg_id(struct ida *ida) 34 { 35 return __acquire_id(ida, 1, 0); 36 } 37 38 int ksmbd_acquire_id(struct ida *ida) 39 { 40 return __acquire_id(ida, 0, 0); 41 } 42 43 void ksmbd_release_id(struct ida *ida, int id) 44 { 45 ida_simple_remove(ida, id); 46 } 47