Adding upstream version 18.2.2.upstream/18.2.2

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

4 files changed, 919 insertions, 0 deletions

diff --git a/src/spdk/module/bdev/pmem/Makefile b/src/spdk/module/bdev/pmem/Makefile
new file mode 100644
index 000000000..3a918be78
--- /dev/null
+++ b/src/spdk/module/bdev/pmem/Makefile
@@ -0,0 +1,45 @@
+#
+#  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
+
+SO_VER := 2
+SO_MINOR := 0
+
+C_SRCS = bdev_pmem.c bdev_pmem_rpc.c
+LIBNAME = bdev_pmem
+
+SPDK_MAP_FILE = $(SPDK_ROOT_DIR)/mk/spdk_blank.map
+
+include $(SPDK_ROOT_DIR)/mk/spdk.lib.mk
diff --git a/src/spdk/module/bdev/pmem/bdev_pmem.c b/src/spdk/module/bdev/pmem/bdev_pmem.c
new file mode 100644
index 000000000..79ffb960a
--- /dev/null
+++ b/src/spdk/module/bdev/pmem/bdev_pmem.c
@@ -0,0 +1,473 @@
+/*-
+ *   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/conf.h"
+#include "spdk/string.h"
+#include "spdk/likely.h"
+#include "spdk/util.h"
+#include "spdk/rpc.h"
+#include "spdk/bdev_module.h"
+#include "spdk_internal/log.h"
+#include "spdk/config.h"
+
+#include "bdev_pmem.h"
+#include "libpmemblk.h"
+
+struct pmem_disk {
+	struct spdk_bdev	disk;
+	PMEMblkpool *pool;
+	char pmem_file[NAME_MAX];
+	TAILQ_ENTRY(pmem_disk) tailq;
+};
+
+static TAILQ_HEAD(, pmem_disk) g_pmem_disks = TAILQ_HEAD_INITIALIZER(g_pmem_disks);
+
+static int bdev_pmem_initialize(void);
+static void bdev_pmem_finish(void);
+
+static struct spdk_bdev_module pmem_if = {
+	.name = "pmem",
+	.module_init = bdev_pmem_initialize,
+	.module_fini = bdev_pmem_finish,
+	.async_fini = true,
+
+};
+
+SPDK_BDEV_MODULE_REGISTER(pmem, &pmem_if)
+
+typedef int(*spdk_bdev_pmem_io_request)(PMEMblkpool *pbp, void *buf, long long blockno);
+
+static int
+_bdev_pmem_submit_io_read(PMEMblkpool *pbp, void *buf, long long blockno)
+{
+	return pmemblk_read(pbp, buf, blockno);
+}
+
+static int
+_bdev_pmem_submit_io_write(PMEMblkpool *pbp, void *buf, long long blockno)
+{
+	return pmemblk_write(pbp, buf, blockno);
+}
+
+static int
+bdev_pmem_destruct(void *ctx)
+{
+	struct pmem_disk *pdisk = ctx;
+
+	TAILQ_REMOVE(&g_pmem_disks, pdisk, tailq);
+	free(pdisk->disk.name);
+	pmemblk_close(pdisk->pool);
+	free(pdisk);
+
+	return 0;
+}
+
+static int
+bdev_pmem_check_iov_len(struct iovec *iovs, int iovcnt, size_t num_blocks, uint32_t block_size)
+{
+	size_t nbytes = num_blocks * block_size;
+	int i;
+
+	for (i = 0; i < iovcnt; i++) {
+		if (spdk_unlikely(iovs[i].iov_base == NULL && iovs[i].iov_len != 0)) {
+			return -1;
+		}
+
+		if (nbytes <= iovs[i].iov_len) {
+			return 0;
+		}
+
+		if (spdk_unlikely(iovs[i].iov_len % block_size != 0)) {
+			return -1;
+		}
+
+		nbytes -= iovs[i].iov_len;
+	}
+
+	return -1;
+}
+
+static void
+bdev_pmem_submit_io(struct spdk_bdev_io *bdev_io, struct pmem_disk *pdisk,
+		    struct spdk_io_channel *ch,
+		    struct iovec *iov, int iovcnt,
+		    uint64_t offset_blocks, size_t num_blocks, uint32_t block_size,
+		    spdk_bdev_pmem_io_request fn)
+{
+	int rc;
+	size_t nbytes, offset, len;
+	enum spdk_bdev_io_status status;
+
+	rc = bdev_pmem_check_iov_len(iov, iovcnt, num_blocks, block_size);
+	if (rc) {
+		status = SPDK_BDEV_IO_STATUS_FAILED;
+		goto end;
+	}
+
+	SPDK_DEBUGLOG(SPDK_LOG_BDEV_PMEM, "io %lu bytes from offset %#lx\n",
+		      num_blocks, offset_blocks);
+
+	for (nbytes = num_blocks * block_size; nbytes > 0; iov++) {
+		len = spdk_min(iov->iov_len, nbytes);
+		nbytes -= len;
+
+		offset = 0;
+		while (offset != len) {
+			rc = fn(pdisk->pool, iov->iov_base + offset, offset_blocks);
+			if (rc != 0) {
+				SPDK_ERRLOG("pmemblk io failed: %d (%s)\n", errno, pmemblk_errormsg());
+				status = SPDK_BDEV_IO_STATUS_FAILED;
+				goto end;
+			}
+
+			offset += block_size;
+			offset_blocks++;
+		}
+	}
+
+	assert(num_blocks == offset_blocks - bdev_io->u.bdev.offset_blocks);
+	status = SPDK_BDEV_IO_STATUS_SUCCESS;
+end:
+
+	spdk_bdev_io_complete(bdev_io, status);
+}
+
+static void
+bdev_pmem_write_zeros(struct spdk_bdev_io *bdev_io, struct pmem_disk *pdisk,
+		      struct spdk_io_channel *ch, uint64_t offset_blocks,
+		      uint64_t num_blocks, uint32_t block_size)
+{
+	int rc;
+	enum spdk_bdev_io_status status = SPDK_BDEV_IO_STATUS_SUCCESS;
+
+	while (num_blocks > 0) {
+		rc = pmemblk_set_zero(pdisk->pool, offset_blocks);
+		if (rc != 0) {
+			SPDK_ERRLOG("pmemblk_set_zero failed: %d (%s)\n", errno, pmemblk_errormsg());
+			status = SPDK_BDEV_IO_STATUS_FAILED;
+			break;
+		}
+		offset_blocks++;
+		num_blocks--;
+	}
+	spdk_bdev_io_complete(bdev_io, status);
+}
+
+static void
+bdev_pmem_io_get_buf_cb(struct spdk_io_channel *channel, struct spdk_bdev_io *bdev_io,
+			bool success)
+{
+	if (!success) {
+		spdk_bdev_io_complete(bdev_io, SPDK_BDEV_IO_STATUS_FAILED);
+		return;
+	}
+
+	bdev_pmem_submit_io(bdev_io,
+			    bdev_io->bdev->ctxt,
+			    channel,
+			    bdev_io->u.bdev.iovs,
+			    bdev_io->u.bdev.iovcnt,
+			    bdev_io->u.bdev.offset_blocks,
+			    bdev_io->u.bdev.num_blocks,
+			    bdev_io->bdev->blocklen,
+			    _bdev_pmem_submit_io_read);
+}
+
+static void
+bdev_pmem_submit_request(struct spdk_io_channel *channel, struct spdk_bdev_io *bdev_io)
+{
+	switch (bdev_io->type) {
+	case SPDK_BDEV_IO_TYPE_READ:
+		spdk_bdev_io_get_buf(bdev_io, bdev_pmem_io_get_buf_cb,
+				     bdev_io->u.bdev.num_blocks * bdev_io->bdev->blocklen);
+		break;
+	case SPDK_BDEV_IO_TYPE_WRITE:
+		bdev_pmem_submit_io(bdev_io,
+				    bdev_io->bdev->ctxt,
+				    channel,
+				    bdev_io->u.bdev.iovs,
+				    bdev_io->u.bdev.iovcnt,
+				    bdev_io->u.bdev.offset_blocks,
+				    bdev_io->u.bdev.num_blocks,
+				    bdev_io->bdev->blocklen,
+				    _bdev_pmem_submit_io_write);
+		break;
+	case SPDK_BDEV_IO_TYPE_UNMAP:
+	case SPDK_BDEV_IO_TYPE_WRITE_ZEROES:
+		bdev_pmem_write_zeros(bdev_io,
+				      bdev_io->bdev->ctxt,
+				      channel,
+				      bdev_io->u.bdev.offset_blocks,
+				      bdev_io->u.bdev.num_blocks,
+				      bdev_io->bdev->blocklen);
+		break;
+	case SPDK_BDEV_IO_TYPE_RESET:
+		spdk_bdev_io_complete(bdev_io, SPDK_BDEV_IO_STATUS_SUCCESS);
+		break;
+	default:
+		spdk_bdev_io_complete(bdev_io, SPDK_BDEV_IO_STATUS_FAILED);
+	}
+}
+
+static bool
+bdev_pmem_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_RESET:
+	case SPDK_BDEV_IO_TYPE_UNMAP:
+	case SPDK_BDEV_IO_TYPE_WRITE_ZEROES:
+		return true;
+	default:
+		return false;
+	}
+}
+
+static struct spdk_io_channel *
+bdev_pmem_get_io_channel(void *ctx)
+{
+	return spdk_get_io_channel(&g_pmem_disks);
+}
+
+static int
+bdev_pmem_dump_info_json(void *ctx, struct spdk_json_write_ctx *w)
+{
+	struct pmem_disk *pdisk = ctx;
+
+	spdk_json_write_named_object_begin(w, "pmem");
+	spdk_json_write_named_string(w, "pmem_file", pdisk->pmem_file);
+	spdk_json_write_object_end(w);
+
+	return 0;
+}
+
+static int
+bdev_pmem_create_cb(void *io_device, void *ctx_buf)
+{
+	return 0;
+}
+
+static void
+bdev_pmem_destroy_cb(void *io_device, void *ctx_buf)
+{
+}
+
+static void
+bdev_pmem_write_config_json(struct spdk_bdev *bdev, struct spdk_json_write_ctx *w)
+{
+	struct pmem_disk *disk = bdev->ctxt;
+
+	spdk_json_write_object_begin(w);
+
+	spdk_json_write_named_string(w, "method", "bdev_pmem_create");
+
+	spdk_json_write_named_object_begin(w, "params");
+	spdk_json_write_named_string(w, "name", bdev->name);
+	spdk_json_write_named_string(w, "pmem_file", disk->pmem_file);
+	spdk_json_write_object_end(w);
+
+	spdk_json_write_object_end(w);
+}
+
+static const struct spdk_bdev_fn_table pmem_fn_table = {
+	.destruct		= bdev_pmem_destruct,
+	.submit_request		= bdev_pmem_submit_request,
+	.io_type_supported	= bdev_pmem_io_type_supported,
+	.get_io_channel		= bdev_pmem_get_io_channel,
+	.dump_info_json		= bdev_pmem_dump_info_json,
+	.write_config_json	= bdev_pmem_write_config_json,
+};
+
+int
+create_pmem_disk(const char *pmem_file, const char *name, struct spdk_bdev **bdev)
+{
+	uint64_t num_blocks;
+	uint32_t block_size;
+	struct pmem_disk *pdisk;
+	int rc;
+
+	*bdev = NULL;
+
+	if (name == NULL) {
+		SPDK_ERRLOG("Missing name parameter for create_pmem_disk()\n");
+		return -EINVAL;
+	}
+
+	if (pmemblk_check(pmem_file, 0) != 1) {
+		SPDK_ERRLOG("Pool '%s' check failed: %s\n", pmem_file, pmemblk_errormsg());
+		return -EIO;
+	}
+
+	pdisk = calloc(1, sizeof(*pdisk));
+	if (!pdisk) {
+		return -ENOMEM;
+	}
+
+	snprintf(pdisk->pmem_file, sizeof(pdisk->pmem_file), "%s", pmem_file);
+	pdisk->pool = pmemblk_open(pmem_file, 0);
+	if (!pdisk->pool) {
+		SPDK_ERRLOG("Opening pmem pool '%s' failed: %d\n", pmem_file, errno);
+		free(pdisk);
+		return -errno;
+	}
+
+	block_size = pmemblk_bsize(pdisk->pool);
+	num_blocks = pmemblk_nblock(pdisk->pool);
+
+	if (block_size == 0) {
+		SPDK_ERRLOG("Block size must be more than 0 bytes\n");
+		pmemblk_close(pdisk->pool);
+		free(pdisk);
+		return -EINVAL;
+	}
+
+	if (num_blocks == 0) {
+		SPDK_ERRLOG("Disk must be more than 0 blocks\n");
+		pmemblk_close(pdisk->pool);
+		free(pdisk);
+		return -EINVAL;
+	}
+
+	pdisk->disk.name = strdup(name);
+	if (!pdisk->disk.name) {
+		pmemblk_close(pdisk->pool);
+		free(pdisk);
+		return -ENOMEM;
+	}
+
+	pdisk->disk.product_name = "pmemblk disk";
+	pdisk->disk.write_cache = 0;
+	pdisk->disk.blocklen = block_size;
+	pdisk->disk.blockcnt = num_blocks;
+
+	pdisk->disk.ctxt = pdisk;
+	pdisk->disk.fn_table = &pmem_fn_table;
+	pdisk->disk.module = &pmem_if;
+
+	rc = spdk_bdev_register(&pdisk->disk);
+	if (rc) {
+		pmemblk_close(pdisk->pool);
+		free(pdisk->disk.name);
+		free(pdisk);
+		return rc;
+	}
+
+	TAILQ_INSERT_TAIL(&g_pmem_disks, pdisk, tailq);
+
+	*bdev = &pdisk->disk;
+
+	return 0;
+}
+
+void
+delete_pmem_disk(struct spdk_bdev *bdev, spdk_delete_pmem_complete cb_fn, void *cb_arg)
+{
+	if (!bdev || bdev->module != &pmem_if) {
+		cb_fn(cb_arg, -ENODEV);
+		return;
+	}
+
+	spdk_bdev_unregister(bdev, cb_fn, cb_arg);
+}
+
+static void
+bdev_pmem_read_conf(void)
+{
+	struct spdk_conf_section *sp;
+	struct spdk_bdev *bdev;
+	const char *pmem_file;
+	const char *bdev_name;
+	int i;
+
+	sp = spdk_conf_find_section(NULL, "Pmem");
+	if (sp == NULL) {
+		return;
+	}
+
+	for (i = 0; ; i++) {
+		if (!spdk_conf_section_get_nval(sp, "Blk", i)) {
+			break;
+		}
+
+		pmem_file = spdk_conf_section_get_nmval(sp, "Blk", i, 0);
+		if (pmem_file == NULL) {
+			SPDK_ERRLOG("Pmem: missing filename\n");
+			continue;
+		}
+
+		bdev_name = spdk_conf_section_get_nmval(sp, "Blk", i, 1);
+		if (bdev_name == NULL) {
+			SPDK_ERRLOG("Pmem: missing bdev name\n");
+			continue;
+		}
+
+		create_pmem_disk(pmem_file, bdev_name, &bdev);
+	}
+}
+
+static int
+bdev_pmem_initialize(void)
+{
+	const char *err = pmemblk_check_version(PMEMBLK_MAJOR_VERSION, PMEMBLK_MINOR_VERSION);
+
+	if (err != NULL) {
+		SPDK_ERRLOG("Invalid libpmemblk version (expected %d.%d): %s\n", PMEMBLK_MAJOR_VERSION,
+			    PMEMBLK_MINOR_VERSION, err);
+		return -1;
+	}
+
+#ifdef SPDK_CONFIG_DEBUG
+	setenv("PMEMBLK_LOG_LEVEL", "1", 1);
+#endif
+	spdk_io_device_register(&g_pmem_disks, bdev_pmem_create_cb, bdev_pmem_destroy_cb, 0, "pmem_bdev");
+
+	bdev_pmem_read_conf();
+
+	return 0;
+
+}
+
+static void
+bdev_pmem_finish_done(void *io_device)
+{
+	spdk_bdev_module_finish_done();
+}
+
+static void
+bdev_pmem_finish(void)
+{
+	spdk_io_device_unregister(&g_pmem_disks, bdev_pmem_finish_done);
+}
+
+SPDK_LOG_REGISTER_COMPONENT("bdev_pmem", SPDK_LOG_BDEV_PMEM)
diff --git a/src/spdk/module/bdev/pmem/bdev_pmem.h b/src/spdk/module/bdev/pmem/bdev_pmem.h
new file mode 100644
index 000000000..d9292b114
--- /dev/null
+++ b/src/spdk/module/bdev/pmem/bdev_pmem.h
@@ -0,0 +1,64 @@
+/*-
+ *   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_PMEM_H
+#define SPDK_BDEV_PMEM_H
+
+#include "spdk/bdev.h"
+
+typedef void (*spdk_delete_pmem_complete)(void *cb_arg, int bdeverrno);
+
+/**
+ * Create new pmem bdev.
+ *
+ * \param pmem_file Pointer to pmem pool file.
+ * \param name Bdev name.
+ * \param bdev output parameter for bdev when operation is successful.
+ * \return 0 on success.
+ *         -EIO if pool check failed
+ *         -EINVAL if input parameters check failed
+ *         -ENOMEM if buffer cannot be allocated
+ */
+int create_pmem_disk(const char *pmem_file, const char *name, struct spdk_bdev **bdev);
+
+/**
+ * Delete pmem bdev.
+ *
+ * \param bdev Pointer to pmem bdev.
+ * \param cb_fn Function to call after deletion.
+ * \param cb_arg Argument to pass to cb_fn.
+ */
+void delete_pmem_disk(struct spdk_bdev *bdev, spdk_delete_pmem_complete cb_fn,
+		      void *cb_arg);
+
+#endif /* SPDK_BDEV_PMEM_H */
diff --git a/src/spdk/module/bdev/pmem/bdev_pmem_rpc.c b/src/spdk/module/bdev/pmem/bdev_pmem_rpc.c
new file mode 100644
index 000000000..2af7c1c7a
--- /dev/null
+++ b/src/spdk/module/bdev/pmem/bdev_pmem_rpc.c
@@ -0,0 +1,337 @@
+/*-
+ *   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 "bdev_pmem.h"
+#include "spdk/rpc.h"
+#include "spdk/util.h"
+#include "spdk/string.h"
+#include "libpmemblk.h"
+
+#include "spdk_internal/log.h"
+
+struct rpc_construct_pmem {
+	char *pmem_file;
+	char *name;
+};
+
+static void
+free_rpc_bdev_pmem_create(struct rpc_construct_pmem *req)
+{
+	free(req->pmem_file);
+	free(req->name);
+}
+
+static const struct spdk_json_object_decoder rpc_construct_pmem_decoders[] = {
+	{"pmem_file", offsetof(struct rpc_construct_pmem, pmem_file), spdk_json_decode_string},
+	{"name", offsetof(struct rpc_construct_pmem, name), spdk_json_decode_string},
+};
+
+static void
+rpc_bdev_pmem_create(struct spdk_jsonrpc_request *request,
+		     const struct spdk_json_val *params)
+{
+	struct rpc_construct_pmem req = {};
+	struct spdk_json_write_ctx *w;
+	struct spdk_bdev *bdev;
+	int rc;
+
+	if (spdk_json_decode_object(params, rpc_construct_pmem_decoders,
+				    SPDK_COUNTOF(rpc_construct_pmem_decoders),
+				    &req)) {
+		SPDK_DEBUGLOG(SPDK_LOG_BDEV_PMEM, "spdk_json_decode_object failed\n");
+		spdk_jsonrpc_send_error_response(request, SPDK_JSONRPC_ERROR_INTERNAL_ERROR,
+						 "spdk_json_decode_object failed");
+		goto cleanup;
+	}
+	rc = create_pmem_disk(req.pmem_file, req.name, &bdev);
+	if (rc != 0) {
+		spdk_jsonrpc_send_error_response(request, rc, spdk_strerror(-rc));
+		goto cleanup;
+	}
+
+	w = spdk_jsonrpc_begin_result(request);
+	spdk_json_write_string(w, spdk_bdev_get_name(bdev));
+	spdk_jsonrpc_end_result(request, w);
+
+cleanup:
+	free_rpc_bdev_pmem_create(&req);
+}
+SPDK_RPC_REGISTER("bdev_pmem_create", rpc_bdev_pmem_create, SPDK_RPC_RUNTIME)
+SPDK_RPC_REGISTER_ALIAS_DEPRECATED(bdev_pmem_create, construct_pmem_bdev)
+
+struct rpc_delete_pmem {
+	char *name;
+};
+
+static void
+free_rpc_delete_pmem(struct rpc_delete_pmem *req)
+{
+	free(req->name);
+}
+
+static const struct spdk_json_object_decoder rpc_delete_pmem_decoders[] = {
+	{"name", offsetof(struct rpc_delete_pmem, name), spdk_json_decode_string},
+};
+
+static void
+_rpc_bdev_pmem_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_pmem_delete(struct spdk_jsonrpc_request *request,
+		     const struct spdk_json_val *params)
+{
+	struct rpc_delete_pmem req = {NULL};
+	struct spdk_bdev *bdev;
+
+	if (spdk_json_decode_object(params, rpc_delete_pmem_decoders,
+				    SPDK_COUNTOF(rpc_delete_pmem_decoders),
+				    &req)) {
+		SPDK_DEBUGLOG(SPDK_LOG_BDEV_PMEM, "spdk_json_decode_object failed\n");
+		spdk_jsonrpc_send_error_response(request, SPDK_JSONRPC_ERROR_INTERNAL_ERROR,
+						 "spdk_json_decode_object failed");
+	}
+
+	bdev = spdk_bdev_get_by_name(req.name);
+	if (bdev == NULL) {
+		SPDK_DEBUGLOG(SPDK_LOG_BDEV_PMEM, "bdev '%s' does not exist\n", req.name);
+		spdk_jsonrpc_send_error_response(request, -ENODEV, spdk_strerror(ENODEV));
+		goto cleanup;
+	}
+
+	delete_pmem_disk(bdev, _rpc_bdev_pmem_delete_cb, request);
+
+cleanup:
+	free_rpc_delete_pmem(&req);
+}
+SPDK_RPC_REGISTER("bdev_pmem_delete", rpc_bdev_pmem_delete, SPDK_RPC_RUNTIME)
+SPDK_RPC_REGISTER_ALIAS_DEPRECATED(bdev_pmem_delete, delete_pmem_bdev)
+
+struct rpc_bdev_pmem_create_pool {
+	char *pmem_file;
+	uint64_t num_blocks;
+	uint32_t block_size;
+};
+
+static const struct spdk_json_object_decoder rpc_bdev_pmem_create_pool_decoders[] = {
+	{"pmem_file", offsetof(struct rpc_bdev_pmem_create_pool, pmem_file), spdk_json_decode_string},
+	{"num_blocks", offsetof(struct rpc_bdev_pmem_create_pool, num_blocks), spdk_json_decode_uint64},
+	{"block_size", offsetof(struct rpc_bdev_pmem_create_pool, block_size), spdk_json_decode_uint32},
+};
+
+static void
+free_rpc_bdev_pmem_create_pool(struct rpc_bdev_pmem_create_pool *req)
+{
+	free(req->pmem_file);
+}
+
+static void
+rpc_bdev_pmem_create_pool(struct spdk_jsonrpc_request *request,
+			  const struct spdk_json_val *params)
+{
+	struct rpc_bdev_pmem_create_pool req = {};
+	struct spdk_json_write_ctx *w;
+	uint64_t pool_size;
+	PMEMblkpool *pbp;
+
+	if (spdk_json_decode_object(params, rpc_bdev_pmem_create_pool_decoders,
+				    SPDK_COUNTOF(rpc_bdev_pmem_create_pool_decoders),
+				    &req)) {
+		SPDK_DEBUGLOG(SPDK_LOG_BDEV_PMEM, "spdk_json_decode_object failed\n");
+		spdk_jsonrpc_send_error_response(request, SPDK_JSONRPC_ERROR_INTERNAL_ERROR,
+						 "spdk_json_decode_object failed");
+		goto cleanup;
+	}
+
+	/* libpmemblk pool has to contain at least 256 blocks */
+	if (req.num_blocks < 256) {
+		spdk_jsonrpc_send_error_response(request, -EINVAL,
+						 "Pmem pool num_blocks must be at least 256");
+		goto cleanup;
+	}
+
+	pool_size = req.num_blocks * req.block_size;
+	if (pool_size < PMEMBLK_MIN_POOL) {
+		spdk_jsonrpc_send_error_response_fmt(request, -EINVAL,
+						     "Pmem pool size must be at least %ld", PMEMBLK_MIN_POOL);
+		goto cleanup;
+	}
+
+	pbp = pmemblk_create(req.pmem_file, req.block_size, pool_size, 0666);
+	if (pbp == NULL) {
+		const char *msg = pmemblk_errormsg();
+
+		SPDK_DEBUGLOG(SPDK_LOG_BDEV_PMEM, "pmemblk_create() failed: %s\n", msg ? msg : "(logs disabled)");
+		spdk_jsonrpc_send_error_response_fmt(request, -SPDK_JSONRPC_ERROR_INVALID_PARAMS,
+						     "pmemblk_create failed: %s", msg ? msg : "(logs disabled)");
+		goto cleanup;
+	}
+
+	pmemblk_close(pbp);
+
+	w = spdk_jsonrpc_begin_result(request);
+	spdk_json_write_bool(w, true);
+	spdk_jsonrpc_end_result(request, w);
+
+cleanup:
+	free_rpc_bdev_pmem_create_pool(&req);
+}
+SPDK_RPC_REGISTER("bdev_pmem_create_pool", rpc_bdev_pmem_create_pool, SPDK_RPC_RUNTIME)
+SPDK_RPC_REGISTER_ALIAS_DEPRECATED(bdev_pmem_create_pool, create_pmem_pool)
+
+struct rpc_bdev_pmem_get_pool_info {
+	char *pmem_file;
+};
+
+static const struct spdk_json_object_decoder rpc_bdev_pmem_get_pool_info_decoders[] = {
+	{"pmem_file", offsetof(struct rpc_bdev_pmem_get_pool_info, pmem_file), spdk_json_decode_string},
+};
+
+static void
+free_rpc_bdev_pmem_get_pool_info(struct rpc_bdev_pmem_get_pool_info *req)
+{
+	free(req->pmem_file);
+}
+
+static void
+rpc_bdev_pmem_get_pool_info(struct spdk_jsonrpc_request *request,
+			    const struct spdk_json_val *params)
+{
+	struct rpc_bdev_pmem_get_pool_info req = {};
+	struct spdk_json_write_ctx *w;
+	size_t num_blocks, block_size;
+	PMEMblkpool *pbp;
+
+	if (spdk_json_decode_object(params, rpc_bdev_pmem_get_pool_info_decoders,
+				    SPDK_COUNTOF(rpc_bdev_pmem_get_pool_info_decoders),
+				    &req)) {
+		spdk_jsonrpc_send_error_response(request, SPDK_JSONRPC_ERROR_INTERNAL_ERROR,
+						 "spdk_json_decode_object failed");
+		goto cleanup;
+	}
+
+	pbp = pmemblk_open(req.pmem_file, 0);
+	if (pbp == NULL) {
+		const char *msg = pmemblk_errormsg();
+
+		spdk_jsonrpc_send_error_response_fmt(request, -SPDK_JSONRPC_ERROR_INVALID_PARAMS,
+						     "pmemblk_open failed: %s", msg ? msg : "(logs disabled)");
+		goto cleanup;
+	}
+
+	block_size = pmemblk_bsize(pbp);
+	num_blocks = pmemblk_nblock(pbp);
+
+	pmemblk_close(pbp);
+
+	/* Check pmem pool consistency */
+	if (pmemblk_check(req.pmem_file, block_size) != 1) {
+		const char *msg = pmemblk_errormsg();
+
+		spdk_jsonrpc_send_error_response_fmt(request, -SPDK_JSONRPC_ERROR_INVALID_PARAMS,
+						     "pmemblk_check failed: %s", msg ? msg : "(logs disabled)");
+		goto cleanup;
+	}
+
+	w = spdk_jsonrpc_begin_result(request);
+	spdk_json_write_array_begin(w);
+	spdk_json_write_object_begin(w);
+	spdk_json_write_named_uint64(w, "num_blocks", num_blocks);
+	spdk_json_write_named_uint64(w, "block_size", block_size);
+	spdk_json_write_object_end(w);
+	spdk_json_write_array_end(w);
+	spdk_jsonrpc_end_result(request, w);
+
+cleanup:
+	free_rpc_bdev_pmem_get_pool_info(&req);
+}
+SPDK_RPC_REGISTER("bdev_pmem_get_pool_info", rpc_bdev_pmem_get_pool_info, SPDK_RPC_RUNTIME)
+SPDK_RPC_REGISTER_ALIAS_DEPRECATED(bdev_pmem_get_pool_info, pmem_pool_info)
+
+struct rpc_bdev_pmem_delete_pool {
+	char *pmem_file;
+};
+
+static const struct spdk_json_object_decoder rpc_bdev_pmem_delete_pool_decoders[] = {
+	{"pmem_file", offsetof(struct rpc_bdev_pmem_delete_pool, pmem_file), spdk_json_decode_string},
+};
+
+static void
+free_rpc_bdev_pmem_delete_pool(struct rpc_bdev_pmem_delete_pool *req)
+{
+	free(req->pmem_file);
+}
+
+static void
+rpc_bdev_pmem_delete_pool(struct spdk_jsonrpc_request *request,
+			  const struct spdk_json_val *params)
+{
+	struct rpc_bdev_pmem_delete_pool req = {};
+	struct spdk_json_write_ctx *w;
+	int rc;
+
+	if (spdk_json_decode_object(params, rpc_bdev_pmem_delete_pool_decoders,
+				    SPDK_COUNTOF(rpc_bdev_pmem_delete_pool_decoders),
+				    &req)) {
+		spdk_jsonrpc_send_error_response(request, SPDK_JSONRPC_ERROR_INTERNAL_ERROR,
+						 "spdk_json_decode_object failed");
+		goto cleanup;
+	}
+
+	/* Check if file is actually pmem pool */
+	rc = pmemblk_check(req.pmem_file, 0);
+	if (rc != 1) {
+		const char *msg = pmemblk_errormsg();
+
+		spdk_jsonrpc_send_error_response_fmt(request, -SPDK_JSONRPC_ERROR_INVALID_PARAMS,
+						     "pmemblk_check failed: %s", msg ? msg : "(logs disabled)");
+		goto cleanup;
+	}
+
+	unlink(req.pmem_file);
+
+	w = spdk_jsonrpc_begin_result(request);
+	spdk_json_write_bool(w, true);
+	spdk_jsonrpc_end_result(request, w);
+
+cleanup:
+	free_rpc_bdev_pmem_delete_pool(&req);
+}
+SPDK_RPC_REGISTER("bdev_pmem_delete_pool", rpc_bdev_pmem_delete_pool, SPDK_RPC_RUNTIME)
+SPDK_RPC_REGISTER_ALIAS_DEPRECATED(bdev_pmem_delete_pool, delete_pmem_pool)