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/* SPDX-License-Identifier: BSD-3-Clause
 * Copyright(c) 2010-2014 Intel Corporation
 */

#include <stdio.h>
#include <stdint.h>
#include <stdarg.h>
#include <string.h>
#include <errno.h>
#include <sys/queue.h>

#include <rte_eal.h>
#include <rte_string_fns.h>
#include <rte_tailq.h>

#include "test.h"

#define do_return(...) do { \
	printf("Error at %s, line %d: ", __func__, __LINE__); \
	printf(__VA_ARGS__); \
	return 1; \
} while (0)

static struct rte_tailq_elem rte_dummy_tailq = {
	.name = "dummy",
};
EAL_REGISTER_TAILQ(rte_dummy_tailq)

static struct rte_tailq_elem rte_dummy_dyn_tailq = {
	.name = "dummy_dyn",
};
static struct rte_tailq_elem rte_dummy_dyn2_tailq = {
	.name = "dummy_dyn",
};

static struct rte_tailq_entry d_elem;
static struct rte_tailq_entry d_dyn_elem;

static int
test_tailq_early(void)
{
	struct rte_tailq_entry_head *d_head;

	d_head = RTE_TAILQ_CAST(rte_dummy_tailq.head, rte_tailq_entry_head);
	if (d_head == NULL)
		do_return("Error %s has not been initialised\n",
			  rte_dummy_tailq.name);

	/* check we can add an item to it */
	TAILQ_INSERT_TAIL(d_head, &d_elem, next);

	return 0;
}

static int
test_tailq_create(void)
{
	struct rte_tailq_entry_head *d_head;

	/* create a tailq and check its non-null (since we are post-eal init) */
	if ((rte_eal_tailq_register(&rte_dummy_dyn_tailq) < 0) ||
	    (rte_dummy_dyn_tailq.head == NULL))
		do_return("Error allocating %s\n", rte_dummy_dyn_tailq.name);

	d_head = RTE_TAILQ_CAST(rte_dummy_dyn_tailq.head, rte_tailq_entry_head);

	/* check we can add an item to it */
	TAILQ_INSERT_TAIL(d_head, &d_dyn_elem, next);

	if (strcmp(rte_dummy_dyn2_tailq.name, rte_dummy_dyn_tailq.name))
		do_return("Error, something is wrong in the tailq test\n");

	/* try allocating again, and check for failure */
	if (!rte_eal_tailq_register(&rte_dummy_dyn2_tailq))
		do_return("Error, registering the same tailq %s did not fail\n",
			  rte_dummy_dyn2_tailq.name);

	return 0;
}

static int
test_tailq_lookup(void)
{
	/* run successful  test - check result is found */
	struct rte_tailq_entry_head *d_head;
	struct rte_tailq_entry *d_ptr;

	d_head = RTE_TAILQ_LOOKUP(rte_dummy_tailq.name, rte_tailq_entry_head);
	/* rte_dummy_tailq has been registered by EAL_REGISTER_TAILQ */
	if (d_head == NULL ||
	    d_head != RTE_TAILQ_CAST(rte_dummy_tailq.head, rte_tailq_entry_head))
		do_return("Error with tailq lookup\n");

	TAILQ_FOREACH(d_ptr, d_head, next)
		if (d_ptr != &d_elem)
			do_return("Error with tailq returned from lookup - "
					"expected element not found\n");

	d_head = RTE_TAILQ_LOOKUP(rte_dummy_dyn_tailq.name, rte_tailq_entry_head);
	/* rte_dummy_dyn_tailq has been registered by test_tailq_create */
	if (d_head == NULL ||
	    d_head != RTE_TAILQ_CAST(rte_dummy_dyn_tailq.head, rte_tailq_entry_head))
		do_return("Error with tailq lookup\n");

	TAILQ_FOREACH(d_ptr, d_head, next)
		if (d_ptr != &d_dyn_elem)
			do_return("Error with tailq returned from lookup - "
					"expected element not found\n");

	/* now try a bad/error lookup */
	d_head = RTE_TAILQ_LOOKUP("coucou", rte_tailq_entry_head);
	if (d_head != NULL)
		do_return("Error, lookup does not return NULL for bad tailq name\n");

	return 0;
}

static int
test_tailq(void)
{
	int ret = 0;
	ret |= test_tailq_early();
	ret |= test_tailq_create();
	ret |= test_tailq_lookup();
	return ret;
}

REGISTER_TEST_COMMAND(tailq_autotest, test_tailq);