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/*
* Copyright (c) 2008, XenSource Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of XenSource Inc. nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
* OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef TAPDISK_FILTER_H
#define TAPDISK_FILTER_H
#include <libaio.h>
#include <inttypes.h>
#include <time.h>
#define TD_INJECT_FAULTS 0x00001 /* simulate random IO failures */
#define TD_CHECK_INTEGRITY 0x00002 /* check data integrity */
#define TD_FAULT_RATE 5
struct dhash {
uint64_t hash;
struct timeval time;
};
struct fiocb {
size_t bytes;
void *data;
};
struct tfilter {
int mode;
uint64_t secs;
int iocbs;
struct dhash *dhash;
int ffree;
struct fiocb *fiocbs;
struct fiocb **flist;
};
struct tfilter *tapdisk_init_tfilter(int mode, int iocbs, uint64_t secs);
void tapdisk_free_tfilter(struct tfilter *);
void tapdisk_filter_iocbs(struct tfilter *, struct iocb **, int);
void tapdisk_filter_events(struct tfilter *, struct io_event *, int);
#endif
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