diff options
Diffstat (limited to 'src/spdk/lib/bdev/null')
| -rw-r--r-- | src/spdk/lib/bdev/null/Makefile | 40 | ||||
| -rw-r--r-- | src/spdk/lib/bdev/null/bdev_null.c | 384 | ||||
| -rw-r--r-- | src/spdk/lib/bdev/null/bdev_null.h | 57 | ||||
| -rw-r--r-- | src/spdk/lib/bdev/null/bdev_null_rpc.c | 169 |
4 files changed, 650 insertions, 0 deletions
diff --git a/src/spdk/lib/bdev/null/Makefile b/src/spdk/lib/bdev/null/Makefile new file mode 100644 index 00000000..24962e58 --- /dev/null +++ b/src/spdk/lib/bdev/null/Makefile @@ -0,0 +1,40 @@ +# +# BSD LICENSE +# +# Copyright (c) Intel Corporation. +# 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. +# + +SPDK_ROOT_DIR := $(abspath $(CURDIR)/../../..) +include $(SPDK_ROOT_DIR)/mk/spdk.common.mk + +C_SRCS = bdev_null.c bdev_null_rpc.c +LIBNAME = bdev_null + +include $(SPDK_ROOT_DIR)/mk/spdk.lib.mk diff --git a/src/spdk/lib/bdev/null/bdev_null.c b/src/spdk/lib/bdev/null/bdev_null.c new file mode 100644 index 00000000..9ff64725 --- /dev/null +++ b/src/spdk/lib/bdev/null/bdev_null.c @@ -0,0 +1,384 @@ +/*- + * BSD LICENSE + * + * Copyright (c) Intel Corporation. + * 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/stdinc.h" + +#include "spdk/bdev.h" +#include "spdk/conf.h" +#include "spdk/env.h" +#include "spdk/thread.h" +#include "spdk/json.h" + +#include "spdk/bdev_module.h" +#include "spdk_internal/log.h" + +#include "bdev_null.h" + +struct null_bdev { + struct spdk_bdev bdev; + TAILQ_ENTRY(null_bdev) tailq; +}; + +struct null_io_channel { + struct spdk_poller *poller; + TAILQ_HEAD(, spdk_bdev_io) io; +}; + +static TAILQ_HEAD(, null_bdev) g_null_bdev_head; +static void *g_null_read_buf; + +static int bdev_null_initialize(void); +static void bdev_null_finish(void); +static void bdev_null_get_spdk_running_config(FILE *fp); + +static struct spdk_bdev_module null_if = { + .name = "null", + .module_init = bdev_null_initialize, + .module_fini = bdev_null_finish, + .config_text = bdev_null_get_spdk_running_config, + .async_fini = true, +}; + +SPDK_BDEV_MODULE_REGISTER(&null_if) + +static int +bdev_null_destruct(void *ctx) +{ + struct null_bdev *bdev = ctx; + + TAILQ_REMOVE(&g_null_bdev_head, bdev, tailq); + free(bdev->bdev.name); + spdk_dma_free(bdev); + + return 0; +} + +static void +bdev_null_submit_request(struct spdk_io_channel *_ch, struct spdk_bdev_io *bdev_io) +{ + struct null_io_channel *ch = spdk_io_channel_get_ctx(_ch); + + switch (bdev_io->type) { + case SPDK_BDEV_IO_TYPE_READ: + if (bdev_io->u.bdev.iovs[0].iov_base == NULL) { + assert(bdev_io->u.bdev.iovcnt == 1); + bdev_io->u.bdev.iovs[0].iov_base = g_null_read_buf; + bdev_io->u.bdev.iovs[0].iov_len = bdev_io->u.bdev.num_blocks * bdev_io->bdev->blocklen; + } + TAILQ_INSERT_TAIL(&ch->io, bdev_io, module_link); + break; + case SPDK_BDEV_IO_TYPE_WRITE: + case SPDK_BDEV_IO_TYPE_WRITE_ZEROES: + case SPDK_BDEV_IO_TYPE_RESET: + TAILQ_INSERT_TAIL(&ch->io, bdev_io, module_link); + break; + case SPDK_BDEV_IO_TYPE_FLUSH: + case SPDK_BDEV_IO_TYPE_UNMAP: + default: + spdk_bdev_io_complete(bdev_io, SPDK_BDEV_IO_STATUS_FAILED); + break; + } +} + +static bool +bdev_null_io_type_supported(void *ctx, enum spdk_bdev_io_type io_type) +{ + switch (io_type) { + case SPDK_BDEV_IO_TYPE_READ: + case SPDK_BDEV_IO_TYPE_WRITE: + case SPDK_BDEV_IO_TYPE_WRITE_ZEROES: + case SPDK_BDEV_IO_TYPE_RESET: + return true; + case SPDK_BDEV_IO_TYPE_FLUSH: + case SPDK_BDEV_IO_TYPE_UNMAP: + default: + return false; + } +} + +static struct spdk_io_channel * +bdev_null_get_io_channel(void *ctx) +{ + return spdk_get_io_channel(&g_null_bdev_head); +} + +static void +bdev_null_write_config_json(struct spdk_bdev *bdev, struct spdk_json_write_ctx *w) +{ + char uuid_str[SPDK_UUID_STRING_LEN]; + + spdk_json_write_object_begin(w); + + spdk_json_write_named_string(w, "method", "construct_null_bdev"); + + spdk_json_write_named_object_begin(w, "params"); + spdk_json_write_named_string(w, "name", bdev->name); + spdk_json_write_named_uint64(w, "num_blocks", bdev->blockcnt); + spdk_json_write_named_uint32(w, "block_size", bdev->blocklen); + spdk_uuid_fmt_lower(uuid_str, sizeof(uuid_str), &bdev->uuid); + spdk_json_write_named_string(w, "uuid", uuid_str); + spdk_json_write_object_end(w); + + spdk_json_write_object_end(w); +} + +static const struct spdk_bdev_fn_table null_fn_table = { + .destruct = bdev_null_destruct, + .submit_request = bdev_null_submit_request, + .io_type_supported = bdev_null_io_type_supported, + .get_io_channel = bdev_null_get_io_channel, + .write_config_json = bdev_null_write_config_json, +}; + +struct spdk_bdev * +create_null_bdev(const char *name, const struct spdk_uuid *uuid, + uint64_t num_blocks, uint32_t block_size) +{ + struct null_bdev *bdev; + int rc; + + if (block_size % 512 != 0) { + SPDK_ERRLOG("Block size %u is not a multiple of 512.\n", block_size); + return NULL; + } + + if (num_blocks == 0) { + SPDK_ERRLOG("Disk must be more than 0 blocks\n"); + return NULL; + } + + bdev = spdk_dma_zmalloc(sizeof(*bdev), 0, NULL); + if (!bdev) { + SPDK_ERRLOG("could not allocate null_bdev\n"); + return NULL; + } + + bdev->bdev.name = strdup(name); + if (!bdev->bdev.name) { + spdk_dma_free(bdev); + return NULL; + } + bdev->bdev.product_name = "Null disk"; + + bdev->bdev.write_cache = 0; + bdev->bdev.blocklen = block_size; + bdev->bdev.blockcnt = num_blocks; + if (uuid) { + bdev->bdev.uuid = *uuid; + } else { + spdk_uuid_generate(&bdev->bdev.uuid); + } + + bdev->bdev.ctxt = bdev; + bdev->bdev.fn_table = &null_fn_table; + bdev->bdev.module = &null_if; + + rc = spdk_bdev_register(&bdev->bdev); + if (rc) { + free(bdev->bdev.name); + spdk_dma_free(bdev); + return NULL; + } + + TAILQ_INSERT_TAIL(&g_null_bdev_head, bdev, tailq); + + return &bdev->bdev; +} + +void +delete_null_bdev(struct spdk_bdev *bdev, spdk_delete_null_complete cb_fn, void *cb_arg) +{ + if (!bdev || bdev->module != &null_if) { + cb_fn(cb_arg, -ENODEV); + return; + } + + spdk_bdev_unregister(bdev, cb_fn, cb_arg); +} + +static int +null_io_poll(void *arg) +{ + struct null_io_channel *ch = arg; + TAILQ_HEAD(, spdk_bdev_io) io; + struct spdk_bdev_io *bdev_io; + + TAILQ_INIT(&io); + TAILQ_SWAP(&ch->io, &io, spdk_bdev_io, module_link); + + if (TAILQ_EMPTY(&io)) { + return 0; + } + + while (!TAILQ_EMPTY(&io)) { + bdev_io = TAILQ_FIRST(&io); + TAILQ_REMOVE(&io, bdev_io, module_link); + spdk_bdev_io_complete(bdev_io, SPDK_BDEV_IO_STATUS_SUCCESS); + } + + return 1; +} + +static int +null_bdev_create_cb(void *io_device, void *ctx_buf) +{ + struct null_io_channel *ch = ctx_buf; + + TAILQ_INIT(&ch->io); + ch->poller = spdk_poller_register(null_io_poll, ch, 0); + + return 0; +} + +static void +null_bdev_destroy_cb(void *io_device, void *ctx_buf) +{ + struct null_io_channel *ch = ctx_buf; + + spdk_poller_unregister(&ch->poller); +} + +static int +bdev_null_initialize(void) +{ + struct spdk_conf_section *sp = spdk_conf_find_section(NULL, "Null"); + uint64_t size_in_mb, num_blocks; + int block_size, i, rc = 0; + struct spdk_bdev *bdev; + const char *name, *val; + + TAILQ_INIT(&g_null_bdev_head); + + /* + * This will be used if upper layer expects us to allocate the read buffer. + * Instead of using a real rbuf from the bdev pool, just always point to + * this same zeroed buffer. + */ + g_null_read_buf = spdk_dma_zmalloc(SPDK_BDEV_LARGE_BUF_MAX_SIZE, 0, NULL); + + /* + * We need to pick some unique address as our "io device" - so just use the + * address of the global tailq. + */ + spdk_io_device_register(&g_null_bdev_head, null_bdev_create_cb, null_bdev_destroy_cb, + sizeof(struct null_io_channel), + "null_bdev"); + + if (sp == NULL) { + goto end; + } + + i = 0; + while (true) { + val = spdk_conf_section_get_nval(sp, "Dev", i); + if (val == NULL) { + break; + } + + name = spdk_conf_section_get_nmval(sp, "Dev", i, 0); + if (name == NULL) { + SPDK_ERRLOG("Null entry %d: Name must be provided\n", i); + continue; + } + + val = spdk_conf_section_get_nmval(sp, "Dev", i, 1); + if (val == NULL) { + SPDK_ERRLOG("Null entry %d: Size in MB must be provided\n", i); + continue; + } + + errno = 0; + size_in_mb = strtoull(val, NULL, 10); + if (errno) { + SPDK_ERRLOG("Null entry %d: Invalid size in MB %s\n", i, val); + continue; + } + + val = spdk_conf_section_get_nmval(sp, "Dev", i, 2); + if (val == NULL) { + block_size = 512; + } else { + errno = 0; + block_size = (int)strtol(val, NULL, 10); + if (errno) { + SPDK_ERRLOG("Null entry %d: Invalid block size %s\n", i, val); + continue; + } + } + + num_blocks = size_in_mb * (1024 * 1024) / block_size; + + bdev = create_null_bdev(name, NULL, num_blocks, block_size); + if (bdev == NULL) { + SPDK_ERRLOG("Could not create null bdev\n"); + rc = EINVAL; + goto end; + } + + i++; + } + +end: + return rc; +} + +static void +_bdev_null_finish_cb(void *arg) +{ + spdk_dma_free(g_null_read_buf); + spdk_bdev_module_finish_done(); +} + +static void +bdev_null_finish(void) +{ + spdk_io_device_unregister(&g_null_bdev_head, _bdev_null_finish_cb); +} + +static void +bdev_null_get_spdk_running_config(FILE *fp) +{ + struct null_bdev *bdev; + uint64_t null_bdev_size; + + fprintf(fp, "\n[Null]\n"); + + TAILQ_FOREACH(bdev, &g_null_bdev_head, tailq) { + null_bdev_size = bdev->bdev.blocklen * bdev->bdev.blockcnt; + null_bdev_size /= (1024 * 1024); + fprintf(fp, " %s %" PRIu64 " %d\n", + bdev->bdev.name, null_bdev_size, bdev->bdev.blocklen); + } +} + +SPDK_LOG_REGISTER_COMPONENT("bdev_null", SPDK_LOG_BDEV_NULL) diff --git a/src/spdk/lib/bdev/null/bdev_null.h b/src/spdk/lib/bdev/null/bdev_null.h new file mode 100644 index 00000000..fa0123e3 --- /dev/null +++ b/src/spdk/lib/bdev/null/bdev_null.h @@ -0,0 +1,57 @@ +/*- + * BSD LICENSE + * + * Copyright (c) Intel Corporation. + * 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. + */ + +#ifndef SPDK_BDEV_NULL_H +#define SPDK_BDEV_NULL_H + +#include "spdk/stdinc.h" + +typedef void (*spdk_delete_null_complete)(void *cb_arg, int bdeverrno); + +struct spdk_bdev; +struct spdk_uuid; + +struct spdk_bdev *create_null_bdev(const char *name, const struct spdk_uuid *uuid, + uint64_t num_blocks, uint32_t block_size); + +/** + * Delete null bdev. + * + * \param bdev Pointer to null bdev. + * \param cb_fn Function to call after deletion. + * \param cb_arg Argument to pass to cb_fn. + */ +void delete_null_bdev(struct spdk_bdev *bdev, spdk_delete_null_complete cb_fn, + void *cb_arg); + +#endif /* SPDK_BDEV_NULL_H */ diff --git a/src/spdk/lib/bdev/null/bdev_null_rpc.c b/src/spdk/lib/bdev/null/bdev_null_rpc.c new file mode 100644 index 00000000..9410b7ad --- /dev/null +++ b/src/spdk/lib/bdev/null/bdev_null_rpc.c @@ -0,0 +1,169 @@ +/*- + * BSD LICENSE + * + * Copyright (c) Intel Corporation. + * 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; +}; + +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}, +}; + +static void +spdk_rpc_construct_null_bdev(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; + + 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"); + goto invalid; + } + + if (req.uuid) { + if (spdk_uuid_parse(&decoded_uuid, req.uuid)) { + goto invalid; + } + uuid = &decoded_uuid; + } + + bdev = create_null_bdev(req.name, uuid, req.num_blocks, req.block_size); + if (bdev == NULL) { + goto invalid; + } + + w = spdk_jsonrpc_begin_result(request); + if (w == NULL) { + free_rpc_construct_null(&req); + return; + } + + spdk_json_write_string(w, bdev->name); + spdk_jsonrpc_end_result(request, w); + free_rpc_construct_null(&req); + return; + +invalid: + spdk_jsonrpc_send_error_response(request, SPDK_JSONRPC_ERROR_INVALID_PARAMS, "Invalid parameters"); + free_rpc_construct_null(&req); +} +SPDK_RPC_REGISTER("construct_null_bdev", spdk_rpc_construct_null_bdev, SPDK_RPC_RUNTIME) + +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 +_spdk_rpc_delete_null_bdev_cb(void *cb_arg, int bdeverrno) +{ + struct spdk_jsonrpc_request *request = cb_arg; + struct spdk_json_write_ctx *w; + + w = spdk_jsonrpc_begin_result(request); + if (w == NULL) { + return; + } + + spdk_json_write_bool(w, bdeverrno == 0); + spdk_jsonrpc_end_result(request, w); +} + +static void +spdk_rpc_delete_null_bdev(struct spdk_jsonrpc_request *request, + const struct spdk_json_val *params) +{ + struct rpc_delete_null req = {NULL}; + struct spdk_bdev *bdev; + int rc; + + if (spdk_json_decode_object(params, rpc_delete_null_decoders, + SPDK_COUNTOF(rpc_delete_null_decoders), + &req)) { + rc = -EINVAL; + goto invalid; + } + + bdev = spdk_bdev_get_by_name(req.name); + if (bdev == NULL) { + rc = -ENODEV; + goto invalid; + } + + delete_null_bdev(bdev, _spdk_rpc_delete_null_bdev_cb, request); + + free_rpc_delete_null(&req); + + return; + +invalid: + free_rpc_delete_null(&req); + spdk_jsonrpc_send_error_response(request, SPDK_JSONRPC_ERROR_INVALID_PARAMS, spdk_strerror(-rc)); +} +SPDK_RPC_REGISTER("delete_null_bdev", spdk_rpc_delete_null_bdev, SPDK_RPC_RUNTIME) |