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/* SPDX-License-Identifier: BSD-3-Clause
 * Copyright(c) 2018 Vladimir Medvedkin <medvedkinv@gmail.com>
 * Copyright(c) 2019 Intel Corporation
 */

#include <stdio.h>
#include <stdint.h>
#include <stdlib.h>

#include <rte_ip.h>
#include <rte_rib.h>

#include "test.h"

typedef int32_t (*rte_rib_test)(void);

static int32_t test_create_invalid(void);
static int32_t test_multiple_create(void);
static int32_t test_free_null(void);
static int32_t test_insert_invalid(void);
static int32_t test_get_fn(void);
static int32_t test_basic(void);
static int32_t test_tree_traversal(void);

#define MAX_DEPTH 32
#define MAX_RULES (1 << 22)

/*
 * Check that rte_rib_create fails gracefully for incorrect user input
 * arguments
 */
int32_t
test_create_invalid(void)
{
	struct rte_rib *rib = NULL;
	struct rte_rib_conf config;

	config.max_nodes = MAX_RULES;
	config.ext_sz = 0;

	/* rte_rib_create: rib name == NULL */
	rib = rte_rib_create(NULL, SOCKET_ID_ANY, &config);
	RTE_TEST_ASSERT(rib == NULL,
		"Call succeeded with invalid parameters\n");

	/* rte_rib_create: config == NULL */
	rib = rte_rib_create(__func__, SOCKET_ID_ANY, NULL);
	RTE_TEST_ASSERT(rib == NULL,
		"Call succeeded with invalid parameters\n");

	/* socket_id < -1 is invalid */
	rib = rte_rib_create(__func__, -2, &config);
	RTE_TEST_ASSERT(rib == NULL,
		"Call succeeded with invalid parameters\n");

	/* rte_rib_create: max_nodes = 0 */
	config.max_nodes = 0;
	rib = rte_rib_create(__func__, SOCKET_ID_ANY, &config);
	RTE_TEST_ASSERT(rib == NULL,
		"Call succeeded with invalid parameters\n");
	config.max_nodes = MAX_RULES;

	return TEST_SUCCESS;
}

/*
 * Create rib table then delete rib table 10 times
 * Use a slightly different rules size each time
 */
int32_t
test_multiple_create(void)
{
	struct rte_rib *rib = NULL;
	struct rte_rib_conf config;
	int32_t i;

	config.ext_sz = 0;

	for (i = 0; i < 100; i++) {
		config.max_nodes = MAX_RULES - i;
		rib = rte_rib_create(__func__, SOCKET_ID_ANY, &config);
		RTE_TEST_ASSERT(rib != NULL, "Failed to create RIB\n");
		rte_rib_free(rib);
	}
	/* Can not test free so return success */
	return TEST_SUCCESS;
}

/*
 * Call rte_rib_free for NULL pointer user input. Note: free has no return and
 * therefore it is impossible to check for failure but this test is added to
 * increase function coverage metrics and to validate that freeing null does
 * not crash.
 */
int32_t
test_free_null(void)
{
	struct rte_rib *rib = NULL;
	struct rte_rib_conf config;

	config.max_nodes = MAX_RULES;
	config.ext_sz = 0;

	rib = rte_rib_create(__func__, SOCKET_ID_ANY, &config);
	RTE_TEST_ASSERT(rib != NULL, "Failed to create RIB\n");

	rte_rib_free(rib);
	rte_rib_free(NULL);
	return TEST_SUCCESS;
}

/*
 * Check that rte_rib_insert fails gracefully for incorrect user input arguments
 */
int32_t
test_insert_invalid(void)
{
	struct rte_rib *rib = NULL;
	struct rte_rib_node *node, *node1;
	struct rte_rib_conf config;
	uint32_t ip = RTE_IPV4(0, 0, 0, 0);
	uint8_t depth = 24;

	config.max_nodes = MAX_RULES;
	config.ext_sz = 0;

	/* rte_rib_insert: rib == NULL */
	node = rte_rib_insert(NULL, ip, depth);
	RTE_TEST_ASSERT(node == NULL,
		"Call succeeded with invalid parameters\n");

	/*Create valid rib to use in rest of test. */
	rib = rte_rib_create(__func__, SOCKET_ID_ANY, &config);
	RTE_TEST_ASSERT(rib != NULL, "Failed to create RIB\n");

	/* rte_rib_insert: depth > MAX_DEPTH */
	node = rte_rib_insert(rib, ip, MAX_DEPTH + 1);
	RTE_TEST_ASSERT(node == NULL,
		"Call succeeded with invalid parameters\n");

	/* insert the same ip/depth twice*/
	node = rte_rib_insert(rib, ip, depth);
	RTE_TEST_ASSERT(node != NULL, "Failed to insert rule\n");
	node1 = rte_rib_insert(rib, ip, depth);
	RTE_TEST_ASSERT(node1 == NULL,
		"Call succeeded with invalid parameters\n");

	rte_rib_free(rib);

	return TEST_SUCCESS;
}

/*
 * Call rte_rib_node access functions with incorrect input.
 * After call rte_rib_node access functions with correct args
 * and check the return values for correctness
 */
int32_t
test_get_fn(void)
{
	struct rte_rib *rib = NULL;
	struct rte_rib_node *node;
	struct rte_rib_conf config;
	void *ext;
	uint32_t ip = RTE_IPV4(192, 0, 2, 0);
	uint32_t ip_ret;
	uint64_t nh_set = 10;
	uint64_t nh_ret;
	uint8_t depth = 24;
	uint8_t depth_ret;
	int ret;

	config.max_nodes = MAX_RULES;
	config.ext_sz = 0;

	rib = rte_rib_create(__func__, SOCKET_ID_ANY, &config);
	RTE_TEST_ASSERT(rib != NULL, "Failed to create RIB\n");

	node = rte_rib_insert(rib, ip, depth);
	RTE_TEST_ASSERT(node != NULL, "Failed to insert rule\n");

	/* test rte_rib_get_ip() with incorrect args */
	ret = rte_rib_get_ip(NULL, &ip_ret);
	RTE_TEST_ASSERT(ret < 0,
		"Call succeeded with invalid parameters\n");
	ret = rte_rib_get_ip(node, NULL);
	RTE_TEST_ASSERT(ret < 0,
		"Call succeeded with invalid parameters\n");

	/* test rte_rib_get_depth() with incorrect args */
	ret = rte_rib_get_depth(NULL, &depth_ret);
	RTE_TEST_ASSERT(ret < 0,
		"Call succeeded with invalid parameters\n");
	ret = rte_rib_get_depth(node, NULL);
	RTE_TEST_ASSERT(ret < 0,
		"Call succeeded with invalid parameters\n");

	/* test rte_rib_set_nh() with incorrect args */
	ret = rte_rib_set_nh(NULL, nh_set);
	RTE_TEST_ASSERT(ret < 0,
		"Call succeeded with invalid parameters\n");

	/* test rte_rib_get_nh() with incorrect args */
	ret = rte_rib_get_nh(NULL, &nh_ret);
	RTE_TEST_ASSERT(ret < 0,
		"Call succeeded with invalid parameters\n");
	ret = rte_rib_get_nh(node, NULL);
	RTE_TEST_ASSERT(ret < 0,
		"Call succeeded with invalid parameters\n");

	/* test rte_rib_get_ext() with incorrect args */
	ext = rte_rib_get_ext(NULL);
	RTE_TEST_ASSERT(ext == NULL,
		"Call succeeded with invalid parameters\n");

	/* check the return values */
	ret = rte_rib_get_ip(node, &ip_ret);
	RTE_TEST_ASSERT((ret == 0) && (ip_ret == ip),
		"Failed to get proper node ip\n");
	ret = rte_rib_get_depth(node, &depth_ret);
	RTE_TEST_ASSERT((ret == 0) && (depth_ret == depth),
		"Failed to get proper node depth\n");
	ret = rte_rib_set_nh(node, nh_set);
	RTE_TEST_ASSERT(ret == 0,
		"Failed to set rte_rib_node nexthop\n");
	ret = rte_rib_get_nh(node, &nh_ret);
	RTE_TEST_ASSERT((ret == 0) && (nh_ret == nh_set),
		"Failed to get proper nexthop\n");

	rte_rib_free(rib);

	return TEST_SUCCESS;
}

/*
 * Call insert, lookup/lookup_exact and delete for a single rule
 */
int32_t
test_basic(void)
{
	struct rte_rib *rib = NULL;
	struct rte_rib_node *node;
	struct rte_rib_conf config;

	uint32_t ip = RTE_IPV4(192, 0, 2, 0);
	uint64_t next_hop_add = 10;
	uint64_t next_hop_return;
	uint8_t depth = 24;
	int ret;

	config.max_nodes = MAX_RULES;
	config.ext_sz = 0;

	rib = rte_rib_create(__func__, SOCKET_ID_ANY, &config);
	RTE_TEST_ASSERT(rib != NULL, "Failed to create RIB\n");

	node = rte_rib_insert(rib, ip, depth);
	RTE_TEST_ASSERT(node != NULL, "Failed to insert rule\n");

	ret = rte_rib_set_nh(node, next_hop_add);
	RTE_TEST_ASSERT(ret == 0,
		"Failed to set rte_rib_node field\n");

	node = rte_rib_lookup(rib, ip);
	RTE_TEST_ASSERT(node != NULL, "Failed to lookup\n");

	ret = rte_rib_get_nh(node, &next_hop_return);
	RTE_TEST_ASSERT((ret == 0) && (next_hop_add == next_hop_return),
		"Failed to get proper nexthop\n");

	node = rte_rib_lookup_exact(rib, ip, depth);
	RTE_TEST_ASSERT(node != NULL,
		"Failed to lookup\n");

	ret = rte_rib_get_nh(node, &next_hop_return);
	RTE_TEST_ASSERT((ret == 0) && (next_hop_add == next_hop_return),
		"Failed to get proper nexthop\n");

	rte_rib_remove(rib, ip, depth);

	node = rte_rib_lookup(rib, ip);
	RTE_TEST_ASSERT(node == NULL,
		"Lookup returns non existent rule\n");
	node = rte_rib_lookup_exact(rib, ip, depth);
	RTE_TEST_ASSERT(node == NULL,
		"Lookup returns non existent rule\n");

	rte_rib_free(rib);

	return TEST_SUCCESS;
}

int32_t
test_tree_traversal(void)
{
	struct rte_rib *rib = NULL;
	struct rte_rib_node *node;
	struct rte_rib_conf config;

	uint32_t ip1 = RTE_IPV4(10, 10, 10, 0);
	uint32_t ip2 = RTE_IPV4(10, 10, 130, 80);
	uint8_t depth = 30;

	config.max_nodes = MAX_RULES;
	config.ext_sz = 0;

	rib = rte_rib_create(__func__, SOCKET_ID_ANY, &config);
	RTE_TEST_ASSERT(rib != NULL, "Failed to create RIB\n");

	node = rte_rib_insert(rib, ip1, depth);
	RTE_TEST_ASSERT(node != NULL, "Failed to insert rule\n");

	node = rte_rib_insert(rib, ip2, depth);
	RTE_TEST_ASSERT(node != NULL, "Failed to insert rule\n");

	node = NULL;
	node = rte_rib_get_nxt(rib, RTE_IPV4(10, 10, 130, 0), 24, node,
			RTE_RIB_GET_NXT_ALL);
	RTE_TEST_ASSERT(node != NULL, "Failed to get rib_node\n");

	rte_rib_free(rib);

	return TEST_SUCCESS;
}

static struct unit_test_suite rib_tests = {
	.suite_name = "rib autotest",
	.setup = NULL,
	.teardown = NULL,
	.unit_test_cases = {
		TEST_CASE(test_create_invalid),
		TEST_CASE(test_free_null),
		TEST_CASE(test_insert_invalid),
		TEST_CASE(test_get_fn),
		TEST_CASE(test_basic),
		TEST_CASE(test_tree_traversal),
		TEST_CASES_END()
	}
};

static struct unit_test_suite rib_slow_tests = {
	.suite_name = "rib slow autotest",
	.setup = NULL,
	.teardown = NULL,
	.unit_test_cases = {
		TEST_CASE(test_multiple_create),
		TEST_CASES_END()
	}
};

/*
 * Do all unit tests.
 */
static int
test_rib(void)
{
	return unit_test_suite_runner(&rib_tests);
}

static int
test_slow_rib(void)
{
	return unit_test_suite_runner(&rib_slow_tests);
}

REGISTER_TEST_COMMAND(rib_autotest, test_rib);
REGISTER_TEST_COMMAND(rib_slow_autotest, test_slow_rib);