/*- * 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)