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/*-
* BSD LICENSE
*
* Copyright (c) Intel Corporation. All rights reserved.
* Copyright (c) 2019 Mellanox Technologies LTD. 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 Intel Corporation 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.
*/
#include "spdk/rpc.h"
#include "spdk/util.h"
#include "spdk/string.h"
#include "spdk/bdev_module.h"
#include "spdk_internal/log.h"
#include "bdev_null.h"
struct rpc_construct_null {
char *name;
char *uuid;
uint64_t num_blocks;
uint32_t block_size;
uint32_t md_size;
int32_t dif_type;
bool dif_is_head_of_md;
};
static void
free_rpc_construct_null(struct rpc_construct_null *req)
{
free(req->name);
free(req->uuid);
}
static const struct spdk_json_object_decoder rpc_construct_null_decoders[] = {
{"name", offsetof(struct rpc_construct_null, name), spdk_json_decode_string},
{"uuid", offsetof(struct rpc_construct_null, uuid), spdk_json_decode_string, true},
{"num_blocks", offsetof(struct rpc_construct_null, num_blocks), spdk_json_decode_uint64},
{"block_size", offsetof(struct rpc_construct_null, block_size), spdk_json_decode_uint32},
{"md_size", offsetof(struct rpc_construct_null, md_size), spdk_json_decode_uint32, true},
{"dif_type", offsetof(struct rpc_construct_null, dif_type), spdk_json_decode_int32, true},
{"dif_is_head_of_md", offsetof(struct rpc_construct_null, dif_is_head_of_md), spdk_json_decode_bool, true},
};
static void
rpc_bdev_null_create(struct spdk_jsonrpc_request *request,
const struct spdk_json_val *params)
{
struct rpc_construct_null req = {};
struct spdk_json_write_ctx *w;
struct spdk_uuid *uuid = NULL;
struct spdk_uuid decoded_uuid;
struct spdk_bdev *bdev;
struct spdk_null_bdev_opts opts = {};
uint32_t data_block_size;
int rc = 0;
if (spdk_json_decode_object(params, rpc_construct_null_decoders,
SPDK_COUNTOF(rpc_construct_null_decoders),
&req)) {
SPDK_DEBUGLOG(SPDK_LOG_BDEV_NULL, "spdk_json_decode_object failed\n");
spdk_jsonrpc_send_error_response(request, SPDK_JSONRPC_ERROR_INTERNAL_ERROR,
"spdk_json_decode_object failed");
goto cleanup;
}
if (req.block_size < req.md_size) {
spdk_jsonrpc_send_error_response_fmt(request, -EINVAL,
"Interleaved metadata size can not be greater than block size");
goto cleanup;
}
data_block_size = req.block_size - req.md_size;
if (data_block_size % 512 != 0) {
spdk_jsonrpc_send_error_response_fmt(request, -EINVAL,
"Data block size %u is not a multiple of 512", req.block_size);
goto cleanup;
}
if (req.num_blocks == 0) {
spdk_jsonrpc_send_error_response(request, -EINVAL,
"Disk num_blocks must be greater than 0");
goto cleanup;
}
if (req.uuid) {
if (spdk_uuid_parse(&decoded_uuid, req.uuid)) {
spdk_jsonrpc_send_error_response(request, -EINVAL,
"Failed to parse bdev UUID");
goto cleanup;
}
uuid = &decoded_uuid;
}
if (req.dif_type < SPDK_DIF_DISABLE || req.dif_type > SPDK_DIF_TYPE3) {
spdk_jsonrpc_send_error_response(request, -EINVAL, "Invalid protection information type");
goto cleanup;
}
opts.name = req.name;
opts.uuid = uuid;
opts.num_blocks = req.num_blocks;
opts.block_size = req.block_size;
opts.md_size = req.md_size;
opts.md_interleave = true;
opts.dif_type = req.dif_type;
opts.dif_is_head_of_md = req.dif_is_head_of_md;
rc = bdev_null_create(&bdev, &opts);
if (rc) {
spdk_jsonrpc_send_error_response(request, rc, spdk_strerror(-rc));
goto cleanup;
}
w = spdk_jsonrpc_begin_result(request);
spdk_json_write_string(w, bdev->name);
spdk_jsonrpc_end_result(request, w);
free_rpc_construct_null(&req);
return;
cleanup:
free_rpc_construct_null(&req);
}
SPDK_RPC_REGISTER("bdev_null_create", rpc_bdev_null_create, SPDK_RPC_RUNTIME)
SPDK_RPC_REGISTER_ALIAS_DEPRECATED(bdev_null_create, construct_null_bdev)
struct rpc_delete_null {
char *name;
};
static void
free_rpc_delete_null(struct rpc_delete_null *req)
{
free(req->name);
}
static const struct spdk_json_object_decoder rpc_delete_null_decoders[] = {
{"name", offsetof(struct rpc_delete_null, name), spdk_json_decode_string},
};
static void
rpc_bdev_null_delete_cb(void *cb_arg, int bdeverrno)
{
struct spdk_jsonrpc_request *request = cb_arg;
struct spdk_json_write_ctx *w = spdk_jsonrpc_begin_result(request);
spdk_json_write_bool(w, bdeverrno == 0);
spdk_jsonrpc_end_result(request, w);
}
static void
rpc_bdev_null_delete(struct spdk_jsonrpc_request *request,
const struct spdk_json_val *params)
{
struct rpc_delete_null req = {NULL};
struct spdk_bdev *bdev;
if (spdk_json_decode_object(params, rpc_delete_null_decoders,
SPDK_COUNTOF(rpc_delete_null_decoders),
&req)) {
spdk_jsonrpc_send_error_response(request, SPDK_JSONRPC_ERROR_INTERNAL_ERROR,
"spdk_json_decode_object failed");
goto cleanup;
}
bdev = spdk_bdev_get_by_name(req.name);
if (bdev == NULL) {
spdk_jsonrpc_send_error_response(request, -ENODEV, spdk_strerror(ENODEV));
goto cleanup;
}
bdev_null_delete(bdev, rpc_bdev_null_delete_cb, request);
free_rpc_delete_null(&req);
return;
cleanup:
free_rpc_delete_null(&req);
}
SPDK_RPC_REGISTER("bdev_null_delete", rpc_bdev_null_delete, SPDK_RPC_RUNTIME)
SPDK_RPC_REGISTER_ALIAS_DEPRECATED(bdev_null_delete, delete_null_bdev)
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