| 1 | /*
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| 2 | * Copyright (c) 2025 Miroslav Cimerman <mc@doas.su>
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| 3 | * All rights reserved.
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| 4 | *
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| 5 | * Redistribution and use in source and binary forms, with or without
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| 6 | * modification, are permitted provided that the following conditions
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| 7 | * are met:
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| 8 | *
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| 9 | * - Redistributions of source code must retain the above copyright
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| 10 | * notice, this list of conditions and the following disclaimer.
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| 11 | * - Redistributions in binary form must reproduce the above copyright
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| 12 | * notice, this list of conditions and the following disclaimer in the
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| 13 | * documentation and/or other materials provided with the distribution.
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| 14 | * - The name of the author may not be used to endorse or promote products
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| 15 | * derived from this software without specific prior written permission.
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| 16 | *
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| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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| 18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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| 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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| 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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| 22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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| 23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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| 24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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| 25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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| 26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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| 27 | */
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| 28 |
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| 29 | /** @addtogroup hr
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| 30 | * @{
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| 31 | */
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| 32 | /**
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| 33 | * @file
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| 34 | */
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| 35 |
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| 36 | #ifndef _HR_IO_H
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| 37 | #define _HR_IO_H
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| 38 |
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| 39 | #include "parity_stripe.h"
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| 40 | #include "var.h"
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| 41 | #include "util.h"
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| 42 |
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| 43 | typedef struct hr_io {
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| 44 | hr_bd_op_type_t type; /* read/write */
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| 45 | uint64_t ba;
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| 46 | uint64_t cnt;
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| 47 | void *data_read;
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| 48 | const void *data_write;
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| 49 | size_t extent; /* extent index */
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| 50 | hr_volume_t *vol; /* volume back-pointer */
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| 51 | } hr_io_t;
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| 52 |
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| 53 | typedef struct hr_io_raid5 {
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| 54 | uint64_t ba;
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| 55 | uint64_t cnt;
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| 56 | void *data_read;
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| 57 | const void *data_write;
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| 58 | size_t extent;
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| 59 | uint64_t strip_off; /* needed for offseting parity commits */
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| 60 | hr_stripe_t *stripe;
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| 61 | hr_volume_t *vol;
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| 62 | } hr_io_raid5_t;
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| 63 |
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| 64 | extern errno_t hr_write_direct(service_id_t, uint64_t, size_t, const void *);
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| 65 | extern errno_t hr_read_direct(service_id_t, uint64_t, size_t, void *);
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| 66 | extern errno_t hr_sync_cache(service_id_t, uint64_t, size_t);
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| 67 |
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| 68 | extern errno_t hr_io_worker(void *);
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| 69 |
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| 70 | extern errno_t hr_io_raid5_basic_reader(void *);
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| 71 | extern errno_t hr_io_raid5_reader(void *);
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| 72 | extern errno_t hr_io_raid5_basic_writer(void *);
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| 73 | extern errno_t hr_io_raid5_writer(void *);
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| 74 | extern errno_t hr_io_raid5_noop_writer(void *);
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| 75 | extern errno_t hr_io_raid5_parity_getter(void *);
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| 76 | extern errno_t hr_io_raid5_subtract_writer(void *);
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| 77 | extern errno_t hr_io_raid5_reconstruct_reader(void *);
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| 78 | extern errno_t hr_io_raid5_parity_writer(void *);
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| 79 |
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| 80 | #endif
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| 81 |
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| 82 | /** @}
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| 83 | */
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