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/* $OpenBSD: idgen.h,v 1.2 2008/06/25 00:55:53 djm Exp $ */
/*
*/
/****************************************************************************
* fs/nfs/rpc_idgen.h
*
* Copyright (C) 2012 Gregory Nutt. All rights reserved.
* Copyright (C) 2012 Jose Pablo Rojas Vargas. All rights reserved.
* Author: Jose Pablo Rojas Vargas <jrojas@nx-engineering.com>
*
* Leveraged from OpenBSD:
*
* Copyright (c) 2008 Damien Miller <djm@mindrot.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*
****************************************************************************/
#ifndef __FS_NFS_RPC_IDGEN_H
#define __FS_NFS_RPC_IDGEN_H
/****************************************************************************
* Included Files
****************************************************************************/
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
#define IDGEN32_ROUNDS 31
#define IDGEN32_KEYLEN 32
#define IDGEN32_REKEY_LIMIT 0x60000000
#define IDGEN32_REKEY_TIME 600
/****************************************************************************
* Public Types
****************************************************************************/
struct idgen32_ctx
{
uint32_t id_counter;
uint32_t id_offset;
uint32_t id_hibit;
uint8_t id_key[IDGEN32_KEYLEN];
time_t id_rekey_time;
};
/****************************************************************************
* Public Function Prototypes
****************************************************************************/
void idgen32_init(struct idgen32_ctx *);
uint32_t idgen32(struct idgen32_ctx *);
#endif /* __FS_NFS_RPC_IDGEN_H */
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