1*38c8a9a5SSteve French /* SPDX-License-Identifier: GPL-2.0-or-later */ 2*38c8a9a5SSteve French /* 3*38c8a9a5SSteve French * Copyright (C) 2018 Samsung Electronics Co., Ltd. 4*38c8a9a5SSteve French */ 5*38c8a9a5SSteve French 6*38c8a9a5SSteve French #ifndef __KSMBD_IDA_MANAGEMENT_H__ 7*38c8a9a5SSteve French #define __KSMBD_IDA_MANAGEMENT_H__ 8*38c8a9a5SSteve French 9*38c8a9a5SSteve French #include <linux/slab.h> 10*38c8a9a5SSteve French #include <linux/idr.h> 11*38c8a9a5SSteve French 12*38c8a9a5SSteve French /* 13*38c8a9a5SSteve French * 2.2.1.6.7 TID Generation 14*38c8a9a5SSteve French * The value 0xFFFF MUST NOT be used as a valid TID. All other 15*38c8a9a5SSteve French * possible values for TID, including zero (0x0000), are valid. 16*38c8a9a5SSteve French * The value 0xFFFF is used to specify all TIDs or no TID, 17*38c8a9a5SSteve French * depending upon the context in which it is used. 18*38c8a9a5SSteve French */ 19*38c8a9a5SSteve French int ksmbd_acquire_smb2_tid(struct ida *ida); 20*38c8a9a5SSteve French 21*38c8a9a5SSteve French /* 22*38c8a9a5SSteve French * 2.2.1.6.8 UID Generation 23*38c8a9a5SSteve French * The value 0xFFFE was declared reserved in the LAN Manager 1.0 24*38c8a9a5SSteve French * documentation, so a value of 0xFFFE SHOULD NOT be used as a 25*38c8a9a5SSteve French * valid UID.<21> All other possible values for a UID, excluding 26*38c8a9a5SSteve French * zero (0x0000), are valid. 27*38c8a9a5SSteve French */ 28*38c8a9a5SSteve French int ksmbd_acquire_smb2_uid(struct ida *ida); 29*38c8a9a5SSteve French int ksmbd_acquire_async_msg_id(struct ida *ida); 30*38c8a9a5SSteve French 31*38c8a9a5SSteve French int ksmbd_acquire_id(struct ida *ida); 32*38c8a9a5SSteve French 33*38c8a9a5SSteve French void ksmbd_release_id(struct ida *ida, int id); 34*38c8a9a5SSteve French #endif /* __KSMBD_IDA_MANAGEMENT_H__ */ 35