/*-
 *   BSD LICENSE
 *
 *   Copyright(c) Intel Corporation. All rights reserved.
 *   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,
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 *   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 "CUnit/Basic.h"
#include "spdk_cunit.h"
#include "spdk_internal/mock.h"

#include "lib/test_env.c"

#include "vhost_blk.c"

#include "spdk_internal/bdev.h"
#include "spdk/env.h"

struct spdk_conf_section {
	struct spdk_conf_section *next;
	char *name;
	int num;
	struct spdk_conf_item *item;
};

struct spdk_io_channel {
	struct spdk_thread		*thread;
	struct io_device		*dev;
	uint32_t			ref;
	TAILQ_ENTRY(spdk_io_channel)	tailq;
	spdk_io_channel_destroy_cb	destroy_cb;
};

DEFINE_STUB(spdk_ring_enqueue, size_t, (struct spdk_ring *ring, void **objs, size_t count), 0);
DEFINE_STUB(spdk_ring_dequeue, size_t, (struct spdk_ring *ring, void **objs, size_t count), 0);
DEFINE_STUB_V(spdk_vhost_vq_used_ring_enqueue, (struct spdk_vhost_dev *vdev,
		struct rte_vhost_vring *vq, uint16_t id, uint32_t len));
DEFINE_STUB_P(spdk_vhost_vq_get_desc, struct vring_desc, (struct rte_vhost_vring *vq,
		uint16_t req_idx), {0});
DEFINE_STUB(spdk_vhost_vring_desc_is_wr, bool, (struct vring_desc *cur_desc), false);
DEFINE_STUB(spdk_vhost_vring_desc_to_iov, int, (struct spdk_vhost_dev *vdev, struct iovec *iov,
		uint16_t *iov_index, const struct vring_desc *desc), 0);
DEFINE_STUB(spdk_vhost_vring_desc_has_next, bool, (struct vring_desc *cur_desc), false);
DEFINE_STUB_P(spdk_vhost_vring_desc_get_next, struct vring_desc, (struct vring_desc *vq_desc,
		struct vring_desc *cur_desc), {0});
DEFINE_STUB(spdk_bdev_free_io, int, (struct spdk_bdev_io *bdev_io), 0);
DEFINE_STUB(spdk_bdev_readv, int, (struct spdk_bdev_desc *desc, struct spdk_io_channel *ch,
				   struct iovec *iov, int iovcnt,
				   uint64_t offset, uint64_t nbytes,
				   spdk_bdev_io_completion_cb cb, void *cb_arg), 0);
DEFINE_STUB(spdk_bdev_writev, int, (struct spdk_bdev_desc *desc, struct spdk_io_channel *ch,
				    struct iovec *iov, int iovcnt,
				    uint64_t offset, uint64_t len,
				    spdk_bdev_io_completion_cb cb, void *cb_arg), 0);
DEFINE_STUB_P(spdk_bdev_get_product_name, const char, (const struct spdk_bdev *bdev), {0});
DEFINE_STUB(spdk_vhost_vq_avail_ring_get, uint16_t, (struct rte_vhost_vring *vq, uint16_t *reqs,
		uint16_t reqs_len), 0);
DEFINE_STUB_V(spdk_vhost_dev_mem_register, (struct spdk_vhost_dev *vdev));
DEFINE_STUB_V(spdk_poller_register, (struct spdk_poller **ppoller, spdk_poller_fn fn, void *arg,
				     uint32_t lcore, uint64_t period_microseconds));
DEFINE_STUB_V(spdk_vhost_dev_mem_unregister, (struct spdk_vhost_dev *vdev));
DEFINE_STUB(spdk_env_get_current_core, uint32_t, (void), 0);
DEFINE_STUB(spdk_vhost_event_send, int, (struct spdk_vhost_dev *vdev, spdk_vhost_event_fn cb_fn,
		void *arg, unsigned timeout_sec, const char *errmsg), 0);
DEFINE_STUB_V(spdk_poller_unregister, (struct spdk_poller **ppoller, struct spdk_event *complete));
DEFINE_STUB_V(spdk_ring_free, (struct spdk_ring *ring));
DEFINE_STUB(spdk_env_get_socket_id, uint32_t, (uint32_t core), 0);
DEFINE_STUB_P(spdk_bdev_get_name, const char, (const struct spdk_bdev *bdev), {0});
DEFINE_STUB_P(spdk_conf_first_section, struct spdk_conf_section, (struct spdk_conf *cp), {0});
DEFINE_STUB(spdk_conf_section_match_prefix, bool, (const struct spdk_conf_section *sp,
		const char *name_prefix), false);
DEFINE_STUB_P(spdk_conf_section_get_name, const char, (const struct spdk_conf_section *sp), {0});
DEFINE_STUB_P(spdk_conf_section_get_val, char, (struct spdk_conf_section *sp, const char *key), {0});
DEFINE_STUB(spdk_conf_section_get_boolval, bool, (struct spdk_conf_section *sp, const char *key,
		bool default_val), false);
DEFINE_STUB_P(spdk_conf_next_section, struct spdk_conf_section, (struct spdk_conf_section *sp), {0});
DEFINE_STUB_P(spdk_bdev_get_by_name, struct spdk_bdev, (const char *bdev_name), {0});
DEFINE_STUB(spdk_bdev_open, int, (struct spdk_bdev *bdev, bool write,
				  spdk_bdev_remove_cb_t remove_cb,
				  void *remove_ctx, struct spdk_bdev_desc **desc), 0);
DEFINE_STUB_V(spdk_bdev_close, (struct spdk_bdev_desc *desc));
DEFINE_STUB(rte_vhost_driver_enable_features, int, (const char *path, uint64_t features), 0);
DEFINE_STUB(spdk_json_write_null, int, (struct spdk_json_write_ctx *w), 0);
DEFINE_STUB(spdk_json_write_bool, int, (struct spdk_json_write_ctx *w, bool val), 0);
DEFINE_STUB(spdk_json_write_name, int, (struct spdk_json_write_ctx *w, const char *name), 0);
DEFINE_STUB(spdk_json_write_object_begin, int, (struct spdk_json_write_ctx *w), 0);
DEFINE_STUB(spdk_json_write_uint32, int, (struct spdk_json_write_ctx *w, uint32_t val), 0);
DEFINE_STUB(spdk_json_write_int32, int, (struct spdk_json_write_ctx *w, int32_t val), 0);
DEFINE_STUB(spdk_json_write_string, int, (struct spdk_json_write_ctx *w, const char *val), 0);
DEFINE_STUB(spdk_json_write_array_begin, int, (struct spdk_json_write_ctx *w), 0);
DEFINE_STUB(spdk_json_write_object_end, int, (struct spdk_json_write_ctx *w), 0);
DEFINE_STUB(spdk_json_write_array_end, int, (struct spdk_json_write_ctx *w), 0);
DEFINE_STUB_P(spdk_bdev_get_io_channel, struct spdk_io_channel, (struct spdk_bdev_desc *desc), {0});
DEFINE_STUB_V(spdk_vhost_call_external_event, (const char *ctrlr_name, spdk_vhost_event_fn fn,
		void *arg));
DEFINE_STUB_V(spdk_vhost_dev_backend_event_done, (void *event_ctx, int response));
DEFINE_STUB_V(spdk_vhost_lock, (void));
DEFINE_STUB_V(spdk_vhost_unlock, (void));

/* This sets spdk_vhost_dev_remove to either to fail or success */
DEFINE_STUB(spdk_vhost_dev_remove_fail, bool, (void), false);
/* This sets spdk_vhost_dev_construct to either to fail or success */
DEFINE_STUB(spdk_vhost_dev_construct_fail, bool, (void), false);

static struct spdk_vhost_dev *g_spdk_vhost_device;
int
spdk_vhost_dev_construct(struct spdk_vhost_dev *vdev, const char *name, const char *mask_str,
			 enum spdk_vhost_dev_type type, const struct spdk_vhost_dev_backend *backend)
{
	if (spdk_vhost_dev_construct_fail()) {
		return -1;
	}

	g_spdk_vhost_device = vdev;
	return 0;
}

int
spdk_vhost_dev_remove(struct spdk_vhost_dev *vdev)
{
	if (spdk_vhost_dev_remove_fail()) {
		return -1;
	}

	free(vdev->name);
	g_spdk_vhost_device = NULL;
	return 0;
}

struct spdk_ring *
spdk_ring_create(enum spdk_ring_type type, size_t count, int socket_id)
{
	return NULL;
}

static void
vhost_blk_controller_construct_test(void)
{
	int rc;

	MOCK_SET_P(spdk_conf_next_section, struct spdk_conf_section *, NULL);

	/* VhostBlk section has non numeric suffix */
	MOCK_SET(spdk_conf_section_match_prefix, bool, true);
	MOCK_SET_P(spdk_conf_section_get_name, const char *, "VhostBlkx");
	rc = spdk_vhost_blk_controller_construct();
	CU_ASSERT(rc != 0);

	/* Device has no name */
	MOCK_SET_P(spdk_conf_section_get_name, const char *, "VhostBlk0");
	MOCK_SET_P(spdk_conf_section_get_val, char *, NULL);
	rc = spdk_vhost_blk_controller_construct();
	CU_ASSERT(rc != 0);
}

static struct spdk_vhost_blk_dev *
alloc_bvdev(void)
{
	struct spdk_vhost_blk_dev *bvdev = spdk_dma_zmalloc(sizeof(struct spdk_vhost_blk_dev),
					   SPDK_CACHE_LINE_SIZE, NULL);

	SPDK_CU_ASSERT_FATAL(bvdev != NULL);
	bvdev->vdev.type = SPDK_VHOST_DEV_T_BLK;
	return bvdev;
}

static void
vhost_blk_construct_test(void)
{
	int rc;
	struct spdk_bdev *ut_p_spdk_bdev = MOCK_PASS_THRU_P;

	MOCK_SET(spdk_vhost_dev_remove_fail, bool, false);
	MOCK_SET(spdk_vhost_dev_construct_fail, bool, false);

	/* Create device with invalid name */
	MOCK_SET_P(spdk_bdev_get_by_name, struct spdk_bdev *, NULL);
	rc = spdk_vhost_blk_construct("vhost.0", "0x1", NULL, true);
	CU_ASSERT(rc != 0);

	/* Device could not be opened */
	MOCK_SET_P(spdk_bdev_get_by_name, struct spdk_bdev *, ut_p_spdk_bdev);
	MOCK_SET(spdk_bdev_open, int, -ENOMEM);
	rc = spdk_vhost_blk_construct("vhost.0", "0x1", "Malloc0", true);
	CU_ASSERT(rc != 0);

	/* Failed to construct controller */
	MOCK_SET(spdk_bdev_open, int, 0);
	MOCK_SET(spdk_vhost_dev_construct_fail, bool, true);
	rc = spdk_vhost_blk_construct("vhost.0", "0x1", "Malloc0", true);
	CU_ASSERT(rc != 0);

	/* Failed to set readonly as a feature */
	MOCK_SET(rte_vhost_driver_enable_features, int, -1);
	rc = spdk_vhost_blk_construct("vhost.0", "0x1", "Malloc0", true);
	CU_ASSERT(rc != 0);

	/* Failed to set readonly as a feature and failde to remove controller */
	MOCK_SET(spdk_vhost_dev_remove_fail, bool, true);
	rc = spdk_vhost_blk_construct("vhost.0", "0x1", "Malloc0", true);
	CU_ASSERT(rc != 0);
}

static void
vhost_blk_destroy_test(void)
{
	int rc;
	struct spdk_vhost_blk_dev *bvdev = NULL;

	bvdev = alloc_bvdev();

	/* Device has an incorrect type */
	bvdev->vdev.type = SPDK_VHOST_DEV_T_SCSI;
	rc = spdk_vhost_blk_destroy(&bvdev->vdev);
	CU_ASSERT(rc == -EINVAL);

	/* Failed to remove device */
	bvdev->vdev.type = SPDK_VHOST_DEV_T_BLK;
	MOCK_SET(spdk_vhost_dev_remove_fail, bool, true);
	rc = spdk_vhost_blk_destroy(&bvdev->vdev);
	CU_ASSERT(rc == -1);

	if (rc != 0) {
		free(bvdev);
	}
}

static int
test_setup(void)
{
	return 0;
}

int
main(int argc, char **argv)
{
	CU_pSuite	suite = NULL;
	unsigned int	num_failures;

	if (CU_initialize_registry() != CUE_SUCCESS) {
		return CU_get_error();
	}

	suite = CU_add_suite("vhost_scsi_suite", test_setup, NULL);
	if (suite == NULL) {
		CU_cleanup_registry();
		return CU_get_error();
	}

	if (
		CU_add_test(suite, "vhost_blk_controller_construct", vhost_blk_controller_construct_test) == NULL ||
		CU_add_test(suite, "vhost_blk_construct_test", vhost_blk_construct_test) == NULL ||
		CU_add_test(suite, "vhost_blk_destroy", vhost_blk_destroy_test) == NULL
	) {
		CU_cleanup_registry();
		return CU_get_error();
	}

	CU_basic_set_mode(CU_BRM_VERBOSE);
	CU_basic_run_tests();
	num_failures = CU_get_number_of_failures();
	CU_cleanup_registry();

	return num_failures;
}