a6dbe3721e
per Intel policy to include file commit date using git cmd below. The policy does not apply to non-Intel (C) notices. git log --follow -C90% --format=%ad --date default <file> | tail -1 and then pull just the 4 digit year from the result. Intel copyrights were not added to files where Intel either had no contribution ot the contribution lacked substance (ie license header updates, formatting changes, etc). Contribution date used "--follow -C95%" to get the most accurate date. Note that several files in this patch didn't end the license/(c) block with a blank comment line so these were added as the vast majority of files do have this last blank line. Simply there for consistency. Signed-off-by: paul luse <paul.e.luse@intel.com> Change-Id: Id5b7ce4f658fe87132f14139ead58d6e285c04d4 Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/15192 Tested-by: SPDK CI Jenkins <sys_sgci@intel.com> Reviewed-by: Jim Harris <james.r.harris@intel.com> Reviewed-by: Ben Walker <benjamin.walker@intel.com> Community-CI: Mellanox Build Bot
149 lines
3.8 KiB
C
149 lines
3.8 KiB
C
/* SPDX-License-Identifier: BSD-3-Clause
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* Copyright (C) 2018 Intel Corporation.
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* All rights reserved.
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* Copyright (c) 2022 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
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*/
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#include "spdk/stdinc.h"
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#include "spdk/blob.h"
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#include "spdk/dma.h"
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#include "blobstore.h"
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static void
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zeroes_destroy(struct spdk_bs_dev *bs_dev)
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{
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return;
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}
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static void
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zeroes_read(struct spdk_bs_dev *dev, struct spdk_io_channel *channel, void *payload,
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uint64_t lba, uint32_t lba_count, struct spdk_bs_dev_cb_args *cb_args)
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{
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memset(payload, 0, dev->blocklen * lba_count);
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cb_args->cb_fn(cb_args->channel, cb_args->cb_arg, 0);
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}
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static void
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zeroes_write(struct spdk_bs_dev *dev, struct spdk_io_channel *channel, void *payload,
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uint64_t lba, uint32_t lba_count,
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struct spdk_bs_dev_cb_args *cb_args)
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{
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cb_args->cb_fn(cb_args->channel, cb_args->cb_arg, -EPERM);
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assert(false);
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}
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static void
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zeroes_readv(struct spdk_bs_dev *dev, struct spdk_io_channel *channel,
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struct iovec *iov, int iovcnt,
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uint64_t lba, uint32_t lba_count, struct spdk_bs_dev_cb_args *cb_args)
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{
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int i;
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for (i = 0; i < iovcnt; i++) {
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memset(iov[i].iov_base, 0, iov[i].iov_len);
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}
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cb_args->cb_fn(cb_args->channel, cb_args->cb_arg, 0);
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}
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static void
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zeroes_writev(struct spdk_bs_dev *dev, struct spdk_io_channel *channel,
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struct iovec *iov, int iovcnt,
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uint64_t lba, uint32_t lba_count,
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struct spdk_bs_dev_cb_args *cb_args)
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{
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cb_args->cb_fn(cb_args->channel, cb_args->cb_arg, -EPERM);
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assert(false);
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}
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static void
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_read_memory_domain_memzero_done(void *ctx, int rc)
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{
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struct spdk_bs_dev_cb_args *cb_args = (struct spdk_bs_dev_cb_args *)ctx;
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cb_args->cb_fn(cb_args->channel, cb_args->cb_arg, rc);
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}
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static void
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zeroes_readv_ext(struct spdk_bs_dev *dev, struct spdk_io_channel *channel,
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struct iovec *iov, int iovcnt,
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uint64_t lba, uint32_t lba_count, struct spdk_bs_dev_cb_args *cb_args,
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struct spdk_blob_ext_io_opts *ext_io_opts)
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{
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int i, rc;
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if (ext_io_opts->memory_domain) {
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rc = spdk_memory_domain_memzero(ext_io_opts->memory_domain, ext_io_opts->memory_domain_ctx, iov,
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iovcnt, _read_memory_domain_memzero_done, cb_args);
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if (rc) {
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cb_args->cb_fn(cb_args->channel, cb_args->cb_arg, rc);
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}
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return;
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}
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for (i = 0; i < iovcnt; i++) {
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memset(iov[i].iov_base, 0, iov[i].iov_len);
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}
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cb_args->cb_fn(cb_args->channel, cb_args->cb_arg, 0);
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}
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static void
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zeroes_writev_ext(struct spdk_bs_dev *dev, struct spdk_io_channel *channel,
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struct iovec *iov, int iovcnt,
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uint64_t lba, uint32_t lba_count,
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struct spdk_bs_dev_cb_args *cb_args,
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struct spdk_blob_ext_io_opts *ext_io_opts)
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{
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cb_args->cb_fn(cb_args->channel, cb_args->cb_arg, -EPERM);
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assert(false);
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}
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static void
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zeroes_write_zeroes(struct spdk_bs_dev *dev, struct spdk_io_channel *channel,
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uint64_t lba, uint64_t lba_count,
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struct spdk_bs_dev_cb_args *cb_args)
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{
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cb_args->cb_fn(cb_args->channel, cb_args->cb_arg, -EPERM);
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assert(false);
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}
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static void
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zeroes_unmap(struct spdk_bs_dev *dev, struct spdk_io_channel *channel,
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uint64_t lba, uint64_t lba_count,
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struct spdk_bs_dev_cb_args *cb_args)
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{
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cb_args->cb_fn(cb_args->channel, cb_args->cb_arg, -EPERM);
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assert(false);
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}
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static bool
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zeroes_is_zeroes(struct spdk_bs_dev *dev, uint64_t lba, uint64_t lba_count)
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{
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return true;
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}
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static struct spdk_bs_dev g_zeroes_bs_dev = {
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.blockcnt = UINT64_MAX,
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.blocklen = 512,
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.create_channel = NULL,
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.destroy_channel = NULL,
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.destroy = zeroes_destroy,
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.read = zeroes_read,
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.write = zeroes_write,
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.readv = zeroes_readv,
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.writev = zeroes_writev,
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.readv_ext = zeroes_readv_ext,
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.writev_ext = zeroes_writev_ext,
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.write_zeroes = zeroes_write_zeroes,
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.unmap = zeroes_unmap,
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.is_zeroes = zeroes_is_zeroes,
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};
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struct spdk_bs_dev *
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bs_create_zeroes_dev(void)
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{
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return &g_zeroes_bs_dev;
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}
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