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 */ 19 int 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 */ 28 int ksmbd_acquire_smb2_uid(struct ida *ida); 29 int ksmbd_acquire_async_msg_id(struct ida *ida); 30 31 int ksmbd_acquire_id(struct ida *ida); 32 33 void ksmbd_release_id(struct ida *ida, int id); 34 #endif /* __KSMBD_IDA_MANAGEMENT_H__ */ 35