00bff560dd
For write, verify DIF/DIX before submission and for read, verify DIF/DIX after successful completion. As same as the NVMe bdev module and the NULL bdev module, DIF/DIX verification is done based on the DIF type and DIF insert/strip is not supported. In near future, the bdev I/O APIs bring an I/O flag to the underlying bdev and the malloc bdev module will be able to decide DIF/DIX verification based on the I/O flag. One important feature is to setup protection information when creating a malloc disk. Otherwise, all initial reads will fail if protection information is enabled. For users, add some explanation about the dif_type parameter into doc/jsonrpc.md. Signed-off-by: Shuhei Matsumoto <smatsumoto@nvidia.com> Change-Id: I93757b77c03cade766c872e418bb46d44918bee2 Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/14985 Reviewed-by: Changpeng Liu <changpeng.liu@intel.com> Reviewed-by: Aleksey Marchuk <alexeymar@nvidia.com> Tested-by: SPDK CI Jenkins <sys_sgci@intel.com> Community-CI: Mellanox Build Bot
33 lines
826 B
C
33 lines
826 B
C
/* SPDX-License-Identifier: BSD-3-Clause
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* Copyright (c) Intel Corporation.
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* All rights reserved.
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* Copyright (c) 2021 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
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*/
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#ifndef SPDK_BDEV_MALLOC_H
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#define SPDK_BDEV_MALLOC_H
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#include "spdk/stdinc.h"
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#include "spdk/bdev_module.h"
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typedef void (*spdk_delete_malloc_complete)(void *cb_arg, int bdeverrno);
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struct malloc_bdev_opts {
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char *name;
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struct spdk_uuid uuid;
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uint64_t num_blocks;
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uint32_t block_size;
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uint32_t optimal_io_boundary;
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uint32_t md_size;
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bool md_interleave;
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enum spdk_dif_type dif_type;
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bool dif_is_head_of_md;
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};
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int create_malloc_disk(struct spdk_bdev **bdev, const struct malloc_bdev_opts *opts);
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void delete_malloc_disk(const char *name, spdk_delete_malloc_complete cb_fn, void *cb_arg);
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#endif /* SPDK_BDEV_MALLOC_H */
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