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/*****************************************************************************\
* ZPIOS is a heavily modified version of the original PIOS test code.
* It is designed to have the test code running in the Linux kernel
* against ZFS while still being flexibly controled from user space.
*
* Copyright (C) 2008-2010 Lawrence Livermore National Security, LLC.
* Produced at Lawrence Livermore National Laboratory (cf, DISCLAIMER).
* Written by Brian Behlendorf <behlendorf1@llnl.gov>.
* LLNL-CODE-403049
*
* Original PIOS Test Code
* Copyright (C) 2004 Cluster File Systems, Inc.
* Written by Peter Braam <braam@clusterfs.com>
* Atul Vidwansa <atul@clusterfs.com>
* Milind Dumbare <milind@clusterfs.com>
*
* This file is part of ZFS on Linux.
* For details, see <http://github.com/behlendorf/zfs/>.
*
* ZPIOS is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*
* ZPIOS is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* for more details.
*
* You should have received a copy of the GNU General Public License along
* with ZPIOS. If not, see <http://www.gnu.org/licenses/>.
\*****************************************************************************/
#ifndef _ZPIOS_CTL_H
#define _ZPIOS_CTL_H
/* Contains shared definitions which both the userspace
* and kernelspace portions of zpios must agree on.
*/
#ifndef _KERNEL
#include <stdint.h>
#endif
#define ZPIOS_MAJOR 232 /* XXX - Arbitrary */
#define ZPIOS_MINORS 1
#define ZPIOS_NAME "zpios"
#define ZPIOS_DEV "/dev/zpios"
#define DMU_IO 0x01
#define DMU_WRITE 0x0001
#define DMU_READ 0x0002
#define DMU_VERIFY 0x0004
#define DMU_REMOVE 0x0008
#define DMU_FPP 0x0010
#define DMU_WRITE_ZC 0x0020 /* Incompatible w/DMU_VERIFY */
#define DMU_READ_ZC 0x0040 /* Incompatible w/DMU_VERIFY */
#define DMU_WRITE_NOWAIT 0x0080
#define DMU_READ_NOPF 0x0100
#define ZPIOS_NAME_SIZE 16
#define ZPIOS_PATH_SIZE 128
#define PHASE_PRE_RUN "pre-run"
#define PHASE_PRE_CREATE "pre-create"
#define PHASE_PRE_WRITE "pre-write"
#define PHASE_PRE_READ "pre-read"
#define PHASE_PRE_REMOVE "pre-remove"
#define PHASE_POST_RUN "post-run"
#define PHASE_POST_CREATE "post-create"
#define PHASE_POST_WRITE "post-write"
#define PHASE_POST_READ "post-read"
#define PHASE_POST_REMOVE "post-remove"
#define ZPIOS_CFG_MAGIC 0x87237190U
typedef struct zpios_cfg {
uint32_t cfg_magic; /* Unique magic */
int32_t cfg_cmd; /* Config command */
int32_t cfg_arg1; /* Config command arg 1 */
int32_t cfg_rc1; /* Config response 1 */
} zpios_cfg_t;
typedef struct zpios_timespec {
uint32_t ts_sec;
uint32_t ts_nsec;
} zpios_timespec_t;
typedef struct zpios_time {
zpios_timespec_t start;
zpios_timespec_t stop;
zpios_timespec_t delta;
} zpios_time_t;
typedef struct zpios_stats {
zpios_time_t total_time;
zpios_time_t cr_time;
zpios_time_t rm_time;
zpios_time_t wr_time;
zpios_time_t rd_time;
uint64_t wr_data;
uint64_t wr_chunks;
uint64_t rd_data;
uint64_t rd_chunks;
} zpios_stats_t;
#define ZPIOS_CMD_MAGIC 0x49715385U
typedef struct zpios_cmd {
uint32_t cmd_magic; /* Unique magic */
uint32_t cmd_id; /* Run ID */
char cmd_pool[ZPIOS_NAME_SIZE]; /* Pool name */
uint64_t cmd_chunk_size; /* Chunk size */
uint32_t cmd_thread_count; /* Thread count */
uint32_t cmd_region_count; /* Region count */
uint64_t cmd_region_size; /* Region size */
uint64_t cmd_offset; /* Region offset */
uint32_t cmd_region_noise; /* Region noise */
uint32_t cmd_chunk_noise; /* Chunk noise */
uint32_t cmd_thread_delay; /* Thread delay */
uint32_t cmd_flags; /* Test flags */
char cmd_pre[ZPIOS_PATH_SIZE]; /* Pre-exec hook */
char cmd_post[ZPIOS_PATH_SIZE]; /* Post-exec hook */
char cmd_log[ZPIOS_PATH_SIZE]; /* Requested log dir */
uint64_t cmd_data_size; /* Opaque data size */
char cmd_data_str[0]; /* Opaque data region */
} zpios_cmd_t;
/* Valid ioctls */
#define ZPIOS_CFG _IOWR('f', 101, zpios_cfg_t)
#define ZPIOS_CMD _IOWR('f', 102, zpios_cmd_t)
/* Valid configuration commands */
#define ZPIOS_CFG_BUFFER_CLEAR 0x001 /* Clear text buffer */
#define ZPIOS_CFG_BUFFER_SIZE 0x002 /* Resize text buffer */
#ifndef NSEC_PER_SEC
#define NSEC_PER_SEC 1000000000L
#endif
static inline
void zpios_timespec_normalize(zpios_timespec_t *ts, uint32_t sec, uint32_t nsec)
{
while (nsec >= NSEC_PER_SEC) {
nsec -= NSEC_PER_SEC;
sec++;
}
while (nsec < 0) {
nsec += NSEC_PER_SEC;
sec--;
}
ts->ts_sec = sec;
ts->ts_nsec = nsec;
}
static inline
zpios_timespec_t zpios_timespec_add(zpios_timespec_t lhs, zpios_timespec_t rhs)
{
zpios_timespec_t ts_delta;
zpios_timespec_normalize(&ts_delta, lhs.ts_sec + rhs.ts_sec,
lhs.ts_nsec + rhs.ts_nsec);
return ts_delta;
}
static inline
zpios_timespec_t zpios_timespec_sub(zpios_timespec_t lhs, zpios_timespec_t rhs)
{
zpios_timespec_t ts_delta;
zpios_timespec_normalize(&ts_delta, lhs.ts_sec - rhs.ts_sec,
lhs.ts_nsec - rhs.ts_nsec);
return ts_delta;
}
#ifdef _KERNEL
static inline
zpios_timespec_t zpios_timespec_now(void)
{
zpios_timespec_t zts_now;
struct timespec ts_now;
ts_now = current_kernel_time();
zts_now.ts_sec = ts_now.tv_sec;
zts_now.ts_nsec = ts_now.tv_nsec;
return zts_now;
}
#else
static inline
double zpios_timespec_to_double(zpios_timespec_t ts)
{
return ((double)(ts.ts_sec) +
((double)(ts.ts_nsec) / (double)(NSEC_PER_SEC)));
}
#endif /* _KERNEL */
#endif /* _ZPIOS_CTL_H */
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