bdev/zone: Create and delete zoned block device vdev

Adding new bdev module - zoned block device virtual bdev. It should be
possible to build on top of a regular (ie. non-OCSSD) bdev and surface
a zoned device API instead.

Added create and deletion functions for this bdev.

Signed-off-by: Mateusz Kozlowski <mateusz.kozlowski@intel.com>
Change-Id: Ia383483007117d1c826298fd391467a51fa2fe4e
Reviewed-on: https://review.gerrithub.io/c/spdk/spdk/+/468030
Community-CI: Broadcom SPDK FC-NVMe CI <spdk-ci.pdl@broadcom.com>
Reviewed-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com>
Reviewed-by: Tomasz Zawadzki <tomasz.zawadzki@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Konrad Sztyber <konrad.sztyber@intel.com>
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>

mk/spdk.lib_deps.mk

@@ -112,6 +112,7 @@ DEPDIRS-bdev_gpt := bdev conf json log thread util
 
 DEPDIRS-bdev_lvol := $(BDEV_DEPS) lvol blob blob_bdev
 DEPDIRS-bdev_rpc := $(BDEV_DEPS)
+DEPDIRS-bdev_zone_block := bdev log
 
 DEPDIRS-bdev_error := $(BDEV_DEPS_CONF)
 DEPDIRS-bdev_malloc := $(BDEV_DEPS_CONF) copy

mk/spdk.modules.mk

@@ -33,6 +33,7 @@
 
 BLOCKDEV_MODULES_LIST = bdev_malloc bdev_null bdev_nvme bdev_passthru bdev_lvol
 BLOCKDEV_MODULES_LIST += bdev_raid bdev_error bdev_gpt bdev_split bdev_delay
+BLOCKDEV_MODULES_LIST += bdev_zone_block
 BLOCKDEV_MODULES_LIST += blobfs blob_bdev blob lvol vmd nvme
 
 ifeq ($(CONFIG_CRYPTO),y)

module/bdev/Makefile

@@ -34,7 +34,7 @@
 SPDK_ROOT_DIR := $(abspath $(CURDIR)/../..)
 include $(SPDK_ROOT_DIR)/mk/spdk.common.mk
 
-DIRS-y += delay error gpt lvol malloc null nvme passthru raid rpc split
+DIRS-y += delay error gpt lvol malloc null nvme passthru raid rpc split zone_block
 
 DIRS-$(CONFIG_CRYPTO) += crypto
 

module/bdev/zone_block/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 = vbdev_zone_block.c
+LIBNAME = bdev_zone_block
+
+include $(SPDK_ROOT_DIR)/mk/spdk.lib.mk

module/bdev/zone_block/vbdev_zone_block.c

@@ -0,0 +1,81 @@
+/*-
+ *   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 "vbdev_zone_block.h"
+
+#include "spdk/config.h"
+#include "spdk/nvme.h"
+
+#include "spdk_internal/log.h"
+
+int
+spdk_vbdev_zone_block_create(const char *bdev_name, const char *vbdev_name, uint64_t zone_capacity,
+			     uint64_t optimal_open_zones)
+{
+	struct spdk_bdev *bdev = NULL;
+	int rc = 0;
+
+	bdev = spdk_bdev_get_by_name(bdev_name);
+
+	if (!bdev) {
+		SPDK_ERRLOG("Base bdev (%s) doesn't exist\n", bdev_name);
+		return -ENODEV;
+	}
+
+	if (spdk_bdev_is_zoned(bdev)) {
+		SPDK_ERRLOG("Base bdev %s is already a zoned bdev\n", bdev_name);
+		return -EEXIST;
+	}
+
+	if (zone_capacity == 0) {
+		SPDK_ERRLOG("Zone capacity can't be 0\n");
+		return -EINVAL;
+	}
+
+	if (optimal_open_zones == 0) {
+		SPDK_ERRLOG("Optimal open zones can't be 0\n");
+		return -EINVAL;
+	}
+
+	return rc;
+}
+
+void
+spdk_vbdev_zone_block_delete(const char *name, spdk_bdev_unregister_cb cb_fn, void *cb_arg)
+{
+	cb_fn(cb_arg, 0);
+}
+
+SPDK_LOG_REGISTER_COMPONENT("vbdev_zone_block", SPDK_LOG_VBDEV_ZONE_BLOCK)

module/bdev/zone_block/vbdev_zone_block.h

@@ -0,0 +1,47 @@
+/*-
+ *   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_VBDEV_ZONE_BLOCK_H
+#define SPDK_VBDEV_ZONE_BLOCK_H
+
+#include "spdk/stdinc.h"
+
+#include "spdk/bdev.h"
+#include "spdk/bdev_module.h"
+
+int spdk_vbdev_zone_block_create(const char *bdev_name, const char *vbdev_name,
+				 uint64_t zone_capacity, uint64_t optimal_open_zones);
+
+void spdk_vbdev_zone_block_delete(const char *name, spdk_bdev_unregister_cb cb_fn, void *cb_arg);
+
+#endif /* SPDK_VBDEV_ZONE_BLOCK_H */