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/* $OpenBSD: rf_dagutils.h,v 1.3 2002/12/16 07:01:03 tdeval Exp $ */
/* $NetBSD: rf_dagutils.h,v 1.3 1999/02/05 00:06:08 oster Exp $ */
/*
* Copyright (c) 1995 Carnegie-Mellon University.
* All rights reserved.
*
* Author: Mark Holland, William V. Courtright II
*
* Permission to use, copy, modify and distribute this software and
* its documentation is hereby granted, provided that both the copyright
* notice and this permission notice appear in all copies of the
* software, derivative works or modified versions, and any portions
* thereof, and that both notices appear in supporting documentation.
*
* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
* FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
*
* Carnegie Mellon requests users of this software to return to
*
* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
* School of Computer Science
* Carnegie Mellon University
* Pittsburgh PA 15213-3890
*
* any improvements or extensions that they make and grant Carnegie the
* rights to redistribute these changes.
*/
/*****************************************************************************
*
* rf_dagutils.h -- Header file for utility routines for manipulating DAGs.
*
*****************************************************************************/
#include "rf_types.h"
#include "rf_dagfuncs.h"
#include "rf_general.h"
#ifndef _RF__RF_DAGUTILS_H_
#define _RF__RF_DAGUTILS_H_
struct RF_RedFuncs_s {
int (*regular) (RF_DagNode_t *);
char *RegularName;
int (*simple) (RF_DagNode_t *);
char *SimpleName;
};
extern RF_RedFuncs_t rf_xorFuncs;
extern RF_RedFuncs_t rf_xorRecoveryFuncs;
void rf_InitNode(RF_DagNode_t *, RF_NodeStatus_t, int, int (*) (RF_DagNode_t *),
int (*) (RF_DagNode_t *), int (*) (RF_DagNode_t *, int), int, int, int,
int, RF_DagHeader_t *, char *, RF_AllocListElem_t *);
void rf_FreeDAG(RF_DagHeader_t *);
RF_PropHeader_t *rf_MakePropListEntry(RF_DagHeader_t *, int, int,
RF_PropHeader_t *, RF_AllocListElem_t *);
int rf_ConfigureDAGs(RF_ShutdownList_t **);
RF_DagHeader_t *rf_AllocDAGHeader(void);
void rf_FreeDAGHeader(RF_DagHeader_t *);
void *rf_AllocBuffer(RF_Raid_t *, RF_DagHeader_t *, RF_PhysDiskAddr_t *,
RF_AllocListElem_t *);
char *rf_NodeStatusString(RF_DagNode_t *);
void rf_PrintNodeInfoString(RF_DagNode_t *);
int rf_AssignNodeNums(RF_DagHeader_t *);
int rf_RecurAssignNodeNums(RF_DagNode_t *, int, int);
void rf_ResetDAGHeaderPointers(RF_DagHeader_t *, RF_DagHeader_t *);
void rf_RecurResetDAGHeaderPointers(RF_DagNode_t *, RF_DagHeader_t *);
void rf_PrintDAGList(RF_DagHeader_t *);
int rf_ValidateDAG(RF_DagHeader_t *);
void rf_redirect_asm(RF_Raid_t *, RF_AccessStripeMap_t *);
void rf_MapUnaccessedPortionOfStripe(RF_Raid_t *, RF_RaidLayout_t *,
RF_AccessStripeMap_t *, RF_DagHeader_t *, RF_AccessStripeMapHeader_t **,
int *, char **, char **, RF_AllocListElem_t *);
int rf_PDAOverlap(RF_RaidLayout_t *, RF_PhysDiskAddr_t *, RF_PhysDiskAddr_t *);
void rf_GenerateFailedAccessASMs(RF_Raid_t *, RF_AccessStripeMap_t *,
RF_PhysDiskAddr_t *, RF_DagHeader_t *, RF_AccessStripeMapHeader_t **,
int *, char **, char *, RF_AllocListElem_t *);
/* Flags used by RangeRestrictPDA. */
#define RF_RESTRICT_NOBUFFER 0
#define RF_RESTRICT_DOBUFFER 1
void rf_RangeRestrictPDA(RF_Raid_t *, RF_PhysDiskAddr_t *, RF_PhysDiskAddr_t *,
int, int);
int rf_compute_workload_shift(RF_Raid_t *, RF_PhysDiskAddr_t *);
void rf_SelectMirrorDiskIdle(RF_DagNode_t *);
void rf_SelectMirrorDiskPartition(RF_DagNode_t *);
#endif /* ! _RF__RF_DAGUTILS_H_ */
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