Adding upstream version 16.2.11+ds.upstream/16.2.11+dsupstream

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

4 files changed, 343 insertions, 0 deletions

diff --git a/src/spdk/examples/bdev/hello_world/.gitignore b/src/spdk/examples/bdev/hello_world/.gitignore
new file mode 100644
index 000000000..7bdf93936
--- /dev/null
+++ b/src/spdk/examples/bdev/hello_world/.gitignore
@@ -0,0 +1 @@
+hello_bdev
diff --git a/src/spdk/examples/bdev/hello_world/Makefile b/src/spdk/examples/bdev/hello_world/Makefile
new file mode 100644
index 000000000..f4a5a5b69
--- /dev/null
+++ b/src/spdk/examples/bdev/hello_world/Makefile
@@ -0,0 +1,44 @@
+#
+#  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
+include $(SPDK_ROOT_DIR)/mk/spdk.modules.mk
+
+APP = hello_bdev
+
+C_SRCS := hello_bdev.c
+
+SPDK_LIB_LIST = $(ALL_MODULES_LIST)
+SPDK_LIB_LIST += $(EVENT_BDEV_SUBSYSTEM)
+SPDK_LIB_LIST += bdev_rpc bdev accel event thread util conf trace log jsonrpc json rpc sock notify
+
+include $(SPDK_ROOT_DIR)/mk/spdk.app.mk
diff --git a/src/spdk/examples/bdev/hello_world/bdev.conf b/src/spdk/examples/bdev/hello_world/bdev.conf
new file mode 100644
index 000000000..80af878f8
--- /dev/null
+++ b/src/spdk/examples/bdev/hello_world/bdev.conf
@@ -0,0 +1,3 @@
+[Malloc]
+  NumberOfLuns 1
+  LunSizeInMB  32
diff --git a/src/spdk/examples/bdev/hello_world/hello_bdev.c b/src/spdk/examples/bdev/hello_world/hello_bdev.c
new file mode 100644
index 000000000..565005212
--- /dev/null
+++ b/src/spdk/examples/bdev/hello_world/hello_bdev.c
@@ -0,0 +1,295 @@
+/*-
+ *   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/thread.h"
+#include "spdk/bdev.h"
+#include "spdk/env.h"
+#include "spdk/event.h"
+#include "spdk/log.h"
+#include "spdk/string.h"
+#include "spdk/bdev_module.h"
+
+static char *g_bdev_name = "Malloc0";
+
+/*
+ * We'll use this struct to gather housekeeping hello_context to pass between
+ * our events and callbacks.
+ */
+struct hello_context_t {
+	struct spdk_bdev *bdev;
+	struct spdk_bdev_desc *bdev_desc;
+	struct spdk_io_channel *bdev_io_channel;
+	char *buff;
+	char *bdev_name;
+	struct spdk_bdev_io_wait_entry bdev_io_wait;
+};
+
+/*
+ * Usage function for printing parameters that are specific to this application
+ */
+static void
+hello_bdev_usage(void)
+{
+	printf(" -b <bdev>                 name of the bdev to use\n");
+}
+
+/*
+ * This function is called to parse the parameters that are specific to this application
+ */
+static int hello_bdev_parse_arg(int ch, char *arg)
+{
+	switch (ch) {
+	case 'b':
+		g_bdev_name = arg;
+		break;
+	default:
+		return -EINVAL;
+	}
+	return 0;
+}
+
+/*
+ * Callback function for read io completion.
+ */
+static void
+read_complete(struct spdk_bdev_io *bdev_io, bool success, void *cb_arg)
+{
+	struct hello_context_t *hello_context = cb_arg;
+
+	if (success) {
+		SPDK_NOTICELOG("Read string from bdev : %s\n", hello_context->buff);
+	} else {
+		SPDK_ERRLOG("bdev io read error\n");
+	}
+
+	/* Complete the bdev io and close the channel */
+	spdk_bdev_free_io(bdev_io);
+	spdk_put_io_channel(hello_context->bdev_io_channel);
+	spdk_bdev_close(hello_context->bdev_desc);
+	SPDK_NOTICELOG("Stopping app\n");
+	spdk_app_stop(success ? 0 : -1);
+}
+
+static void
+hello_read(void *arg)
+{
+	struct hello_context_t *hello_context = arg;
+	int rc = 0;
+	uint32_t length = spdk_bdev_get_block_size(hello_context->bdev);
+
+	SPDK_NOTICELOG("Reading io\n");
+	rc = spdk_bdev_read(hello_context->bdev_desc, hello_context->bdev_io_channel,
+			    hello_context->buff, 0, length, read_complete, hello_context);
+
+	if (rc == -ENOMEM) {
+		SPDK_NOTICELOG("Queueing io\n");
+		/* In case we cannot perform I/O now, queue I/O */
+		hello_context->bdev_io_wait.bdev = hello_context->bdev;
+		hello_context->bdev_io_wait.cb_fn = hello_read;
+		hello_context->bdev_io_wait.cb_arg = hello_context;
+		spdk_bdev_queue_io_wait(hello_context->bdev, hello_context->bdev_io_channel,
+					&hello_context->bdev_io_wait);
+	} else if (rc) {
+		SPDK_ERRLOG("%s error while reading from bdev: %d\n", spdk_strerror(-rc), rc);
+		spdk_put_io_channel(hello_context->bdev_io_channel);
+		spdk_bdev_close(hello_context->bdev_desc);
+		spdk_app_stop(-1);
+	}
+}
+
+/*
+ * Callback function for write io completion.
+ */
+static void
+write_complete(struct spdk_bdev_io *bdev_io, bool success, void *cb_arg)
+{
+	struct hello_context_t *hello_context = cb_arg;
+	uint32_t length;
+
+	/* Complete the I/O */
+	spdk_bdev_free_io(bdev_io);
+
+	if (success) {
+		SPDK_NOTICELOG("bdev io write completed successfully\n");
+	} else {
+		SPDK_ERRLOG("bdev io write error: %d\n", EIO);
+		spdk_put_io_channel(hello_context->bdev_io_channel);
+		spdk_bdev_close(hello_context->bdev_desc);
+		spdk_app_stop(-1);
+		return;
+	}
+
+	/* Zero the buffer so that we can use it for reading */
+	length = spdk_bdev_get_block_size(hello_context->bdev);
+	memset(hello_context->buff, 0, length);
+
+	hello_read(hello_context);
+}
+
+static void
+hello_write(void *arg)
+{
+	struct hello_context_t *hello_context = arg;
+	int rc = 0;
+	uint32_t length = spdk_bdev_get_block_size(hello_context->bdev);
+
+	SPDK_NOTICELOG("Writing to the bdev\n");
+	rc = spdk_bdev_write(hello_context->bdev_desc, hello_context->bdev_io_channel,
+			     hello_context->buff, 0, length, write_complete, hello_context);
+
+	if (rc == -ENOMEM) {
+		SPDK_NOTICELOG("Queueing io\n");
+		/* In case we cannot perform I/O now, queue I/O */
+		hello_context->bdev_io_wait.bdev = hello_context->bdev;
+		hello_context->bdev_io_wait.cb_fn = hello_write;
+		hello_context->bdev_io_wait.cb_arg = hello_context;
+		spdk_bdev_queue_io_wait(hello_context->bdev, hello_context->bdev_io_channel,
+					&hello_context->bdev_io_wait);
+	} else if (rc) {
+		SPDK_ERRLOG("%s error while writing to bdev: %d\n", spdk_strerror(-rc), rc);
+		spdk_put_io_channel(hello_context->bdev_io_channel);
+		spdk_bdev_close(hello_context->bdev_desc);
+		spdk_app_stop(-1);
+	}
+}
+
+/*
+ * Our initial event that kicks off everything from main().
+ */
+static void
+hello_start(void *arg1)
+{
+	struct hello_context_t *hello_context = arg1;
+	uint32_t blk_size, buf_align;
+	int rc = 0;
+	hello_context->bdev = NULL;
+	hello_context->bdev_desc = NULL;
+
+	SPDK_NOTICELOG("Successfully started the application\n");
+
+	/*
+	 * Get the bdev. There can be many bdevs configured, but this
+	 * application will only use the one input by the user at runtime so
+	 * we get it via its name.
+	 */
+	hello_context->bdev = spdk_bdev_get_by_name(hello_context->bdev_name);
+	if (hello_context->bdev == NULL) {
+		SPDK_ERRLOG("Could not find the bdev: %s\n", hello_context->bdev_name);
+		spdk_app_stop(-1);
+		return;
+	}
+
+	/*
+	 * Open the bdev by calling spdk_bdev_open()
+	 * The function will return a descriptor
+	 */
+	SPDK_NOTICELOG("Opening the bdev %s\n", hello_context->bdev_name);
+	rc = spdk_bdev_open(hello_context->bdev, true, NULL, NULL, &hello_context->bdev_desc);
+	if (rc) {
+		SPDK_ERRLOG("Could not open bdev: %s\n", hello_context->bdev_name);
+		spdk_app_stop(-1);
+		return;
+	}
+
+	SPDK_NOTICELOG("Opening io channel\n");
+	/* Open I/O channel */
+	hello_context->bdev_io_channel = spdk_bdev_get_io_channel(hello_context->bdev_desc);
+	if (hello_context->bdev_io_channel == NULL) {
+		SPDK_ERRLOG("Could not create bdev I/O channel!!\n");
+		spdk_bdev_close(hello_context->bdev_desc);
+		spdk_app_stop(-1);
+		return;
+	}
+
+	/* Allocate memory for the write buffer.
+	 * Initialize the write buffer with the string "Hello World!"
+	 */
+	blk_size = spdk_bdev_get_block_size(hello_context->bdev);
+	buf_align = spdk_bdev_get_buf_align(hello_context->bdev);
+	hello_context->buff = spdk_dma_zmalloc(blk_size, buf_align, NULL);
+	if (!hello_context->buff) {
+		SPDK_ERRLOG("Failed to allocate buffer\n");
+		spdk_put_io_channel(hello_context->bdev_io_channel);
+		spdk_bdev_close(hello_context->bdev_desc);
+		spdk_app_stop(-1);
+		return;
+	}
+	snprintf(hello_context->buff, blk_size, "%s", "Hello World!\n");
+
+	hello_write(hello_context);
+}
+
+int
+main(int argc, char **argv)
+{
+	struct spdk_app_opts opts = {};
+	int rc = 0;
+	struct hello_context_t hello_context = {};
+
+	/* Set default values in opts structure. */
+	spdk_app_opts_init(&opts);
+	opts.name = "hello_bdev";
+
+	/*
+	 * Parse built-in SPDK command line parameters as well
+	 * as our custom one(s).
+	 */
+	if ((rc = spdk_app_parse_args(argc, argv, &opts, "b:", NULL, hello_bdev_parse_arg,
+				      hello_bdev_usage)) != SPDK_APP_PARSE_ARGS_SUCCESS) {
+		exit(rc);
+	}
+	hello_context.bdev_name = g_bdev_name;
+
+	/*
+	 * spdk_app_start() will initialize the SPDK framework, call hello_start(),
+	 * and then block until spdk_app_stop() is called (or if an initialization
+	 * error occurs, spdk_app_start() will return with rc even without calling
+	 * hello_start().
+	 */
+	rc = spdk_app_start(&opts, hello_start, &hello_context);
+	if (rc) {
+		SPDK_ERRLOG("ERROR starting application\n");
+	}
+
+	/* At this point either spdk_app_stop() was called, or spdk_app_start()
+	 * failed because of internal error.
+	 */
+
+	/* When the app stops, free up memory that we allocated. */
+	spdk_dma_free(hello_context.buff);
+
+	/* Gracefully close out all of the SPDK subsystems. */
+	spdk_app_fini();
+	return rc;
+}