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RIOT/tests/unittests/tests-fib/tests-fib.c
Karl Fessel c29d2f1afb test/unittest: cleanup most vera++ complains
2022-10-27 16:31:59 +02:00

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/*
* Copyright (C) 2015 Martin Landsmann
*
* This file is subject to the terms and conditions of the GNU Lesser
* General Public License v2.1. See the file LICENSE in the top level
* directory for more details.
*/
#define TEST_FIB_SHOW_OUTPUT (0) /**< set */
#include <stdio.h> /**< required for snprintf() */
#include <string.h>
#include <errno.h>
#include "embUnit.h"
#include "tests-fib.h"
#include "xtimer.h"
#include "thread.h"
#include "net/fib.h"
#include "universal_address.h"
#define TEST_FIB_TABLE_SIZE (20)
static fib_entry_t _entries[TEST_FIB_TABLE_SIZE];
static fib_table_t test_fib_table = { .data.entries = _entries,
.table_type = FIB_TABLE_TYPE_SH,
.size = TEST_FIB_TABLE_SIZE,
.mtx_access = MUTEX_INIT,
.notify_rp_pos = 0 };
/*
* @brief helper to fill FIB with unique entries
*/
static void _fill_FIB_unique(size_t entries)
{
size_t add_buf_size = 16;
char addr_dst[add_buf_size];
char addr_nxt[add_buf_size];
uint32_t addr_dst_flags = 0x00777777;
uint32_t addr_nxt_flags = 0x00777777;
for (size_t i = 0; i < entries; ++i) {
/* construct "addresses" for the FIB */
snprintf(addr_dst, add_buf_size, "Test address %02d", (int)i);
snprintf(addr_nxt, add_buf_size, "Test address %02d", (int)(entries + i));
/* the terminating \0 is unnecessary here */
fib_add_entry(&test_fib_table, 42,
(uint8_t *)addr_dst, add_buf_size - 1, addr_dst_flags,
(uint8_t *)addr_nxt, add_buf_size - 1, addr_nxt_flags,
10000);
}
}
/*
* @brief helper to fill FIB with multiple used entries
* The modulus adjusts the number of reused addresses
*/
static void _fill_FIB_multiple(size_t entries, size_t modulus)
{
size_t add_buf_size = 16;
char addr_dst[add_buf_size];
char addr_nxt[add_buf_size];
uint32_t addr_dst_flags = 0x00333333;
uint32_t addr_nxt_flags = 0x00333333;
for (size_t i = 0; i < entries; ++i) {
/* construct "addresses" for the FIB */
snprintf(addr_dst, add_buf_size, "Test address %02d", (int)i);
snprintf(addr_nxt, add_buf_size, "Test address %02d", (int)(i % modulus));
fib_add_entry(&test_fib_table, 42,
(uint8_t *)addr_dst, add_buf_size - 1, addr_dst_flags,
(uint8_t *)addr_nxt, add_buf_size - 1, addr_nxt_flags,
10000);
}
}
/*
* @brief helper to determine the prefix bits
*/
static size_t _get_prefix_bits_num(char* addr, size_t addr_len)
{
/* Get the index of the first trailing `0` */
int i = 0;
for (i = addr_len-1; i > 0; --i) {
if (addr[i] != 0) {
break;
}
}
/* now we check the bits of the lowest byte */
uint8_t j = 0;
for ( ; j < 8; ++j) {
if ((addr[i] >> j) & 0x01) {
break;
}
}
return (i << 3) + (8 - j);
}
/*
* @brief filling the FIB with entries
* It is expected to have 20 FIB entries and 40 used universal address entries
*/
static void test_fib_01_fill_unique_entries(void)
{
_fill_FIB_unique(20);
#if (TEST_FIB_SHOW_OUTPUT == 1)
fib_print_fib_table(&test_fib_table);
puts("");
universal_address_print_table();
puts("");
#endif
TEST_ASSERT_EQUAL_INT(20, fib_get_num_used_entries(&test_fib_table));
TEST_ASSERT_EQUAL_INT(40, universal_address_get_num_used_entries());
fib_deinit(&test_fib_table);
}
/*
* @brief filling the FIB with reusable entries
* It is expected to have 20 FIB entries and 20 universal address entries
*/
static void test_fib_02_fill_multiple_entries(void)
{
size_t entries = 20;
_fill_FIB_multiple(entries, 11);
#if (TEST_FIB_SHOW_OUTPUT == 1)
fib_print_fib_table(&test_fib_table);
puts("");
universal_address_print_table();
puts("");
#endif
TEST_ASSERT_EQUAL_INT(20, fib_get_num_used_entries(&test_fib_table));
TEST_ASSERT_EQUAL_INT(20, universal_address_get_num_used_entries());
fib_deinit(&test_fib_table);
}
/*
* @brief filling the FIB with entries and removing all entries
* It is expected to have 0 FIB entries and 0 universal address entries after remove
*/
static void test_fib_03_removing_all_entries(void)
{
size_t add_buf_size = 16;
char addr_dst[add_buf_size];
size_t entries = 20;
_fill_FIB_unique(entries);
TEST_ASSERT_EQUAL_INT(20, fib_get_num_used_entries(&test_fib_table));
TEST_ASSERT_EQUAL_INT(40, universal_address_get_num_used_entries());
for (size_t i = 0; i < entries; ++i) {
/* construct "addresses" to remove */
snprintf(addr_dst, add_buf_size, "Test address %02d", (int)i);
fib_remove_entry(&test_fib_table, (uint8_t *)addr_dst, add_buf_size - 1);
}
TEST_ASSERT_EQUAL_INT(0, fib_get_num_used_entries(&test_fib_table));
TEST_ASSERT_EQUAL_INT(0, universal_address_get_num_used_entries());
#if (TEST_FIB_SHOW_OUTPUT == 1)
fib_print_fib_table(&test_fib_table);
puts("");
universal_address_print_table();
puts("");
#endif
fib_deinit(&test_fib_table);
}
/*
* @brief filling the FIB with entries and removing the lower 1/2 entries (0..9)
* It is expected to have 10 FIB entries and 19 used universal address entries after remove
*/
static void test_fib_04_remove_lower_half(void)
{
size_t add_buf_size = 16;
char addr_dst[add_buf_size];
size_t entries = 20;
_fill_FIB_multiple(entries, 11);
TEST_ASSERT_EQUAL_INT(20, fib_get_num_used_entries(&test_fib_table));
TEST_ASSERT_EQUAL_INT(20, universal_address_get_num_used_entries());
for (size_t i = 0; i < entries / 2; ++i) {
/* construct "addresses" to remove */
snprintf(addr_dst, add_buf_size, "Test address %02d", (int)i);
fib_remove_entry(&test_fib_table, (uint8_t *)addr_dst, add_buf_size - 1);
}
#if (TEST_FIB_SHOW_OUTPUT == 1)
fib_print_fib_table(&test_fib_table);
puts("");
universal_address_print_table();
puts("");
#endif
TEST_ASSERT_EQUAL_INT(10, fib_get_num_used_entries(&test_fib_table));
TEST_ASSERT_EQUAL_INT(19, universal_address_get_num_used_entries());
fib_deinit(&test_fib_table);
}
/*
* @brief filling the FIB with entries and removing the upper 1/2 entries (10..19)
* It is expected to have 10 FIB entries and 10 universal address entries after remove
*/
static void test_fib_05_remove_upper_half(void)
{
size_t add_buf_size = 16;
char addr_dst[add_buf_size];
size_t entries = 20;
_fill_FIB_multiple(entries, 11);
TEST_ASSERT_EQUAL_INT(20, fib_get_num_used_entries(&test_fib_table));
TEST_ASSERT_EQUAL_INT(20, universal_address_get_num_used_entries());
for (size_t i = 0; i < entries / 2; ++i) {
/* construct "addresses" to remove */
snprintf(addr_dst, add_buf_size, "Test address %02d", (int)((entries / 2) + i));
fib_remove_entry(&test_fib_table, (uint8_t *)addr_dst, add_buf_size - 1);
}
#if (TEST_FIB_SHOW_OUTPUT == 1)
fib_print_fib_table(&test_fib_table);
puts("");
universal_address_print_table();
puts("");
#endif
TEST_ASSERT_EQUAL_INT(10, fib_get_num_used_entries(&test_fib_table));
TEST_ASSERT_EQUAL_INT(10, universal_address_get_num_used_entries());
fib_deinit(&test_fib_table);
}
/*
* @brief filling the FIB with entries and removing one entry
* It is expected to have 19 FIB entries and still 20 universal address entries
* after removing 02
* (the use count for 02 is reduced to 1 after remove)
*/
static void test_fib_06_remove_one_entry(void)
{
size_t add_buf_size = 16;
char addr_dst[] = "Test address 02";
size_t entries = 20;
_fill_FIB_multiple(entries, 11);
TEST_ASSERT_EQUAL_INT(20, fib_get_num_used_entries(&test_fib_table));
TEST_ASSERT_EQUAL_INT(20, universal_address_get_num_used_entries());
fib_remove_entry(&test_fib_table, (uint8_t *)addr_dst, add_buf_size - 1);
#if (TEST_FIB_SHOW_OUTPUT == 1)
fib_print_fib_table(&test_fib_table);
puts("");
universal_address_print_table();
puts("");
#endif
TEST_ASSERT_EQUAL_INT(19, fib_get_num_used_entries(&test_fib_table));
TEST_ASSERT_EQUAL_INT(20, universal_address_get_num_used_entries());
fib_deinit(&test_fib_table);
}
/*
* @brief filling the FIB with entries and removing one entry several times
* It is expected to have 19 FIB entries and 19 universal address entries
* after removing 13
*/
static void test_fib_07_remove_one_entry_multiple_times(void)
{
size_t add_buf_size = 16; /* includes space for terminating \0 */
char addr_dst[] = "Test address 13";
size_t entries = 20;
_fill_FIB_multiple(entries, 11);
TEST_ASSERT_EQUAL_INT(20, fib_get_num_used_entries(&test_fib_table));
TEST_ASSERT_EQUAL_INT(20, universal_address_get_num_used_entries());
fib_remove_entry(&test_fib_table, (uint8_t *)addr_dst, add_buf_size - 1);
fib_remove_entry(&test_fib_table, (uint8_t *)addr_dst, add_buf_size - 1);
fib_remove_entry(&test_fib_table, (uint8_t *)addr_dst, add_buf_size - 1);
fib_remove_entry(&test_fib_table, (uint8_t *)addr_dst, add_buf_size - 1);
#if (TEST_FIB_SHOW_OUTPUT == 1)
fib_print_fib_table(&test_fib_table);
puts("");
universal_address_print_table();
puts("");
#endif
TEST_ASSERT_EQUAL_INT(19, fib_get_num_used_entries(&test_fib_table));
TEST_ASSERT_EQUAL_INT(19, universal_address_get_num_used_entries());
fib_deinit(&test_fib_table);
}
/*
* @brief filling the FIB with entries and removing an unknown entry
* It is expected to have 20 FIB entries and 20 universal address entries after removing
*/
static void test_fib_08_remove_unknown(void)
{
size_t add_buf_size = 16; /* includes space for terminating \0 */
char addr_dst[] = "Test address 99";
size_t entries = 20;
_fill_FIB_multiple(entries, 11);
TEST_ASSERT_EQUAL_INT(20, fib_get_num_used_entries(&test_fib_table));
TEST_ASSERT_EQUAL_INT(20, universal_address_get_num_used_entries());
fib_remove_entry(&test_fib_table, (uint8_t *)addr_dst, add_buf_size - 1);
fib_remove_entry(&test_fib_table, (uint8_t *)addr_dst, add_buf_size - 1);
fib_remove_entry(&test_fib_table, (uint8_t *)addr_dst, add_buf_size - 1);
#if (TEST_FIB_SHOW_OUTPUT == 1)
fib_print_fib_table(&test_fib_table);
puts("");
universal_address_print_table();
puts("");
#endif
TEST_ASSERT_EQUAL_INT(20, fib_get_num_used_entries(&test_fib_table));
TEST_ASSERT_EQUAL_INT(20, universal_address_get_num_used_entries());
fib_deinit(&test_fib_table);
}
/*
* @brief filling the FIB with entries and update an entry
* It is expected to have FIB entry 13 with updated lifetime of 9999
* and entry 7 with updated iface ID of 7, lifetime of 7777 and next hop "Test address 77"
*/
static void test_fib_09_update_entry(void)
{
size_t add_buf_size = 16; /* includes space for terminating \0 */
char addr_dst13[] = "Test address 13";
char addr_dst07[] = "Test address 07";
char addr_nxt2[] = "Test address 99";
char addr_nxt77[] = "Test address 77";
size_t entries = 20;
_fill_FIB_multiple(entries, 11);
TEST_ASSERT_EQUAL_INT(20, fib_get_num_used_entries(&test_fib_table));
TEST_ASSERT_EQUAL_INT(20, universal_address_get_num_used_entries());
fib_update_entry(&test_fib_table, (uint8_t *)addr_dst13,
add_buf_size - 1, (uint8_t *)addr_nxt2, add_buf_size - 1,
0x99, 9999);
fib_update_entry(&test_fib_table, (uint8_t *)addr_dst07,
add_buf_size - 1, (uint8_t *)addr_nxt77, add_buf_size - 1,
0x77, 7777);
#if (TEST_FIB_SHOW_OUTPUT == 1)
fib_print_fib_table(&test_fib_table);
puts("");
universal_address_print_table();
puts("");
#endif
fib_deinit(&test_fib_table);
}
/*
* @brief filling the FIB with entries and adding an additional one (not fitting)
* It is expected to have 20 FIB entries and to receive FPC_ERROR on adding an
* additional one
*/
static void test_fib_10_add_exceed(void)
{
size_t add_buf_size = 16; /* includes space for terminating \0 */
char addr_dst[] = "Test address 98";
char addr_nxt[] = "Test address 99";
size_t entries = 20;
_fill_FIB_unique(entries);
TEST_ASSERT_EQUAL_INT(20, fib_get_num_used_entries(&test_fib_table));
TEST_ASSERT_EQUAL_INT(40, universal_address_get_num_used_entries());
int ret = fib_add_entry(&test_fib_table, 42, (uint8_t *)addr_dst,
add_buf_size - 1, 0x98, (uint8_t *)addr_nxt,
add_buf_size - 1, 0x99, 9999);
TEST_ASSERT_EQUAL_INT(-ENOMEM, ret);
TEST_ASSERT_EQUAL_INT(20, fib_get_num_used_entries(&test_fib_table));
TEST_ASSERT_EQUAL_INT(40, universal_address_get_num_used_entries());
#if (TEST_FIB_SHOW_OUTPUT == 1)
fib_print_fib_table(&test_fib_table);
puts("");
universal_address_print_table();
puts("");
#endif
fib_deinit(&test_fib_table);
}
/*
* @brief get next hop for known destination
* It is expected to get the next hop 02 and receive 0
*/
static void test_fib_11_get_next_hop_success(void)
{
size_t add_buf_size = 16; /* includes space for terminating \0 */
char addr_dst[] = "Test address 13";
char addr_expect[] = "Test address 02";
kernel_pid_t iface_id = KERNEL_PID_UNDEF;
uint32_t next_hop_flags = 0;
char addr_nxt[add_buf_size];
size_t entries = 20;
_fill_FIB_multiple(entries, 11);
TEST_ASSERT_EQUAL_INT(20, fib_get_num_used_entries(&test_fib_table));
TEST_ASSERT_EQUAL_INT(20, universal_address_get_num_used_entries());
int ret = fib_get_next_hop(&test_fib_table, &iface_id,
(uint8_t *)addr_nxt, &add_buf_size, &next_hop_flags,
(uint8_t *)addr_dst, add_buf_size - 1, 0x13);
TEST_ASSERT_EQUAL_INT(0, ret);
TEST_ASSERT_EQUAL_INT(20, fib_get_num_used_entries(&test_fib_table));
TEST_ASSERT_EQUAL_INT(20, universal_address_get_num_used_entries());
ret = strncmp(addr_expect, addr_nxt, add_buf_size);
TEST_ASSERT_EQUAL_INT(0, ret);
#if (TEST_FIB_SHOW_OUTPUT == 1)
fib_print_fib_table(&test_fib_table);
puts("");
universal_address_print_table();
puts("");
#endif
fib_deinit(&test_fib_table);
}
/*
* @brief get next hop for unknown destination
* It is expected to get no next hop and receive -EHOSTUNREACH
*/
static void test_fib_12_get_next_hop_fail(void)
{
size_t add_buf_size = 16; /* includes space for terminating \0 */
char addr_dst[] = "Test address 99";
kernel_pid_t iface_id = KERNEL_PID_UNDEF;
uint32_t next_hop_flags = 0;
char addr_nxt[add_buf_size];
size_t entries = 20;
_fill_FIB_multiple(entries, 11);
TEST_ASSERT_EQUAL_INT(20, fib_get_num_used_entries(&test_fib_table));
TEST_ASSERT_EQUAL_INT(20, universal_address_get_num_used_entries());
int ret = fib_get_next_hop(&test_fib_table, &iface_id, (uint8_t *)addr_nxt,
&add_buf_size, &next_hop_flags,
(uint8_t *)addr_dst, add_buf_size - 1, 0x99);
TEST_ASSERT_EQUAL_INT(-EHOSTUNREACH, ret);
#if (TEST_FIB_SHOW_OUTPUT == 1)
fib_print_fib_table(&test_fib_table);
puts("");
universal_address_print_table();
puts("");
#endif
fib_deinit(&test_fib_table);
}
/*
* @brief get next hop for known destination but insufficient size for the output
* It is expected to get no next hop and receive -ENOBUFS
*/
static void test_fib_13_get_next_hop_fail_on_buffer_size(void)
{
size_t add_buf_size = 16; /* includes space for terminating \0 */
char addr_dst[] = "Test address 13";
kernel_pid_t iface_id = KERNEL_PID_UNDEF;
uint32_t next_hop_flags = 0;
size_t add_buf_size_nxt = 12;
char addr_nxt[add_buf_size];
size_t entries = 20;
_fill_FIB_multiple(entries, 11);
TEST_ASSERT_EQUAL_INT(20, fib_get_num_used_entries(&test_fib_table));
TEST_ASSERT_EQUAL_INT(20, universal_address_get_num_used_entries());
int ret = fib_get_next_hop(&test_fib_table, &iface_id, (uint8_t *)addr_nxt,
&add_buf_size_nxt, &next_hop_flags,
(uint8_t *)addr_dst, add_buf_size - 1, 0x13);
TEST_ASSERT_EQUAL_INT(-ENOBUFS, ret);
TEST_ASSERT_EQUAL_INT(add_buf_size_nxt, add_buf_size - 1);
#if (TEST_FIB_SHOW_OUTPUT == 1)
fib_print_fib_table(&test_fib_table);
puts("");
universal_address_print_table();
puts("");
#endif
fib_deinit(&test_fib_table);
}
/*
* @brief testing prefix and exact match
* It is expected receive 23 for addr123 as exact match and
* 12 for addr124
*/
static void test_fib_14_exact_and_prefix_match(void)
{
size_t add_buf_size = 16;
char addr_dst[add_buf_size];
char addr_nxt[add_buf_size];
kernel_pid_t iface_id = KERNEL_PID_UNDEF;
uint32_t next_hop_flags = 0;
char addr_lookup[add_buf_size];
memset(addr_dst, 0, add_buf_size);
memset(addr_nxt, 0, add_buf_size);
snprintf(addr_dst, add_buf_size, "Test addr12");
snprintf(addr_nxt, add_buf_size, "Test address %02d", 12);
/* get the prefix in bits */
uint32_t prefix_len = _get_prefix_bits_num(addr_dst, strlen(addr_dst));
fib_add_entry(&test_fib_table, 42, (uint8_t *)addr_dst,
add_buf_size - 1, ((prefix_len << FIB_FLAG_NET_PREFIX_SHIFT) | 0x12),
(uint8_t *)addr_nxt, add_buf_size - 1,
0x12, 100000);
snprintf(addr_dst, add_buf_size, "Test addr123");
snprintf(addr_nxt, add_buf_size, "Test address %02d", 23);
prefix_len = _get_prefix_bits_num(addr_dst, strlen(addr_dst));
fib_add_entry(&test_fib_table, 42, (uint8_t *)addr_dst,
add_buf_size - 1, ((prefix_len << FIB_FLAG_NET_PREFIX_SHIFT) | 0x123),
(uint8_t *)addr_nxt, add_buf_size - 1,
0x23, 100000);
snprintf(addr_dst, add_buf_size, "Test addr1234");
snprintf(addr_nxt, add_buf_size, "Test address %02d", 34);
prefix_len = _get_prefix_bits_num(addr_dst, strlen(addr_dst));
fib_add_entry(&test_fib_table, 42, (uint8_t *)addr_dst,
add_buf_size - 1, ((prefix_len << FIB_FLAG_NET_PREFIX_SHIFT) | 0x1234),
(uint8_t *)addr_nxt, add_buf_size - 1,
0x34, 100000);
memset(addr_lookup, 0, add_buf_size);
/* exact match */
snprintf(addr_lookup, add_buf_size, "Test addr123");
int ret = fib_get_next_hop(&test_fib_table, &iface_id,
(uint8_t *)addr_nxt, &add_buf_size, &next_hop_flags,
(uint8_t *)addr_lookup, add_buf_size - 1, 0x123);
TEST_ASSERT_EQUAL_INT(0, ret);
add_buf_size = 16;
char addr_expect_01[] = "Test address 23";
ret = strncmp(addr_expect_01, addr_nxt, add_buf_size - 1);
TEST_ASSERT_EQUAL_INT(0, ret);
/* prefix match */
add_buf_size = 16;
memset(addr_nxt, 0, add_buf_size);
memset(addr_lookup, 0, add_buf_size);
/* cppcheck-suppress redundantCopy
* (reason: addr_lookup is only passed but not required to be read,
* since we test prefix matching) */
snprintf(addr_lookup, add_buf_size, "Test addr124");
ret = fib_get_next_hop(&test_fib_table, &iface_id,
(uint8_t *)addr_nxt, &add_buf_size, &next_hop_flags,
(uint8_t *)addr_lookup, add_buf_size - 1, 0x124);
TEST_ASSERT_EQUAL_INT(0, ret);
add_buf_size = 16;
char addr_expect_02[] = "Test address 12";
ret = strncmp(addr_expect_02, addr_nxt, add_buf_size);
TEST_ASSERT_EQUAL_INT(0, ret);
#if (TEST_FIB_SHOW_OUTPUT == 1)
fib_print_fib_table(&test_fib_table);
puts("");
universal_address_print_table();
puts("");
#endif
fib_deinit(&test_fib_table);
}
static void test_fib_15_get_lifetime(void)
{
uint64_t lifetime, now;
kernel_pid_t iface_id = 1;
char addr_dst[] = "Test address151";
char addr_nxt[] = "Test address152";
size_t add_buf_size = 16;
uint32_t addr_dst_flags = 0x77777777;
uint32_t addr_nxt_flags = 0x77777777;
TEST_ASSERT_EQUAL_INT(0, fib_add_entry(&test_fib_table,
iface_id, (uint8_t *)addr_dst, add_buf_size - 1,
addr_dst_flags, (uint8_t *)addr_nxt, add_buf_size - 1,
addr_nxt_flags, 1000));
TEST_ASSERT_EQUAL_INT(0, fib_devel_get_lifetime(&test_fib_table, &lifetime,
(uint8_t *)addr_dst,
add_buf_size - 1));
/* assuming some ms passed during these operations... */
now = xtimer_now_usec64();
uint64_t cmp_lifetime = now + 900000lU;
uint64_t cmp_max_lifetime = now + 1100000lU;
TEST_ASSERT_EQUAL_INT(1, (lifetime > cmp_lifetime));
/* make sure lifetime hasn't grown magically either */
TEST_ASSERT_EQUAL_INT(1, (lifetime < cmp_max_lifetime));
fib_deinit(&test_fib_table);
}
/*
* @brief testing prefix with bits
*/
static void test_fib_16_prefix_match(void)
{
size_t add_buf_size = 16;
char addr_dst[add_buf_size];
char addr_nxt[add_buf_size];
char addr_lookup[add_buf_size];
kernel_pid_t iface_id = KERNEL_PID_UNDEF;
uint32_t next_hop_flags = 0;
memset(addr_dst, 0, add_buf_size);
memset(addr_nxt, 0, add_buf_size);
memset(addr_lookup, 0, add_buf_size);
snprintf(addr_dst, add_buf_size, "Test address 1X");
snprintf(addr_nxt, add_buf_size, "Test address 99");
snprintf(addr_lookup, add_buf_size, "Test address 1X");
/* now we change the last byte of addr_dst to have defined trailing 0 bits */
/* test success */
addr_dst[14] = (char)0x80; /* 1000 0000 */
addr_lookup[14] = (char)0x87; /* 1000 0111 */
uint32_t prefix_len = _get_prefix_bits_num(addr_dst, strlen(addr_dst));
fib_add_entry(&test_fib_table, 42, (uint8_t *)addr_dst,
add_buf_size - 1, ((prefix_len << FIB_FLAG_NET_PREFIX_SHIFT) | 0x123),
(uint8_t *)addr_nxt, add_buf_size - 1,
0x23, 100000);
addr_dst[14] = (char)0x3c; /* 0011 1100 */
prefix_len = _get_prefix_bits_num(addr_dst, strlen(addr_dst));
fib_add_entry(&test_fib_table, 42, (uint8_t *)addr_dst,
add_buf_size - 1, ((prefix_len << FIB_FLAG_NET_PREFIX_SHIFT) | 0x123),
(uint8_t *)addr_nxt, add_buf_size - 1,
0x23, 100000);
memset(addr_nxt, 0, add_buf_size);
int ret = fib_get_next_hop(&test_fib_table, &iface_id,
(uint8_t *)addr_nxt, &add_buf_size, &next_hop_flags,
(uint8_t *)addr_lookup, add_buf_size - 1, 0x123);
TEST_ASSERT_EQUAL_INT(0, ret);
/* test fail */
addr_dst[14] = (char)0x3c; /* 0011 1100 */
addr_lookup[14] = (char)0x34; /* 0011 0100 */
addr_lookup[13] += 1;
add_buf_size = 16;
prefix_len = _get_prefix_bits_num(addr_dst, strlen(addr_dst));
fib_add_entry(&test_fib_table, 42, (uint8_t *)addr_dst,
add_buf_size - 1, ((prefix_len << FIB_FLAG_NET_PREFIX_SHIFT) | 0x123),
(uint8_t *)addr_nxt, add_buf_size -
1, 0x23, 100000);
memset(addr_nxt, 0, add_buf_size);
ret = fib_get_next_hop(&test_fib_table, &iface_id,
(uint8_t *)addr_nxt, &add_buf_size, &next_hop_flags,
(uint8_t *)addr_lookup, add_buf_size - 1, 0x123);
TEST_ASSERT_EQUAL_INT(-EHOSTUNREACH, ret);
/* test success (again) by adjusting the lsb */
addr_lookup[14] = (char)0x3e; /* 0011 1110 */
addr_lookup[13] -= 1;
add_buf_size = 16;
memset(addr_nxt, 0, add_buf_size);
ret = fib_get_next_hop(&test_fib_table, &iface_id,
(uint8_t *)addr_nxt, &add_buf_size, &next_hop_flags,
(uint8_t *)addr_lookup, add_buf_size - 1, 0x123);
TEST_ASSERT_EQUAL_INT(0, ret);
#if (TEST_FIB_SHOW_OUTPUT == 1)
fib_print_fib_table(&test_fib_table);
puts("");
universal_address_print_table();
puts("");
#endif
fib_deinit(&test_fib_table);
}
/*
* @brief testing receiving an destination address set matching a specific prefix
*/
static void test_fib_17_get_entry_set(void)
{
/* FIXME: init as enum to fix folding-constant compiler error on macOS */
enum { addr_buf_size = 16 };
char addr_dst[addr_buf_size];
char addr_nxt[addr_buf_size];
/* fill 20 addresses */
for (size_t i = 0; i < 20; ++i) {
/* construct "addresses" for the FIB */
snprintf(addr_dst, addr_buf_size, "Test address %02d", (int)i);
snprintf(addr_nxt, addr_buf_size, "Test address %02d", (int)(i % 11));
fib_add_entry(&test_fib_table, 42,
(uint8_t *)addr_dst, addr_buf_size - 1, 0x0,
(uint8_t *)addr_nxt, addr_buf_size - 1, 0x0, 100000);
}
size_t arr_size = 20;
fib_destination_set_entry_t arr_dst[arr_size];
char prefix[addr_buf_size];
memset(prefix, 0, addr_buf_size);
/* cppcheck-suppress redundantCopy
* (reason: prefix is set to all 0 before adding an address) */
snprintf(prefix, addr_buf_size, "Test address 1");
int ret = fib_get_destination_set(&test_fib_table,
(uint8_t *)prefix, addr_buf_size-1,
&arr_dst[0], &arr_size);
TEST_ASSERT_EQUAL_INT(0, ret);
/* we should receive 10 entries 10 to 19 */
TEST_ASSERT_EQUAL_INT(10, arr_size);
arr_size = 20;
memset(prefix, 0, addr_buf_size);
/* cppcheck-suppress redundantCopy
* (reason: prefix is set to all 0 before adding an address) */
snprintf(prefix, addr_buf_size, "Test address 0");
ret = fib_get_destination_set(&test_fib_table,
(uint8_t *)prefix, addr_buf_size - 1,
&arr_dst[0], &arr_size);
TEST_ASSERT_EQUAL_INT(0, ret);
/* we should receive 20 entries 0-19 */
TEST_ASSERT_EQUAL_INT(20, arr_size);
arr_size = 20;
memset(prefix, 0, addr_buf_size);
/* cppcheck-suppress redundantCopy
* (reason: prefix is set to all 0 before adding an address) */
snprintf(prefix, addr_buf_size, "Test address");
ret = fib_get_destination_set(&test_fib_table,
(uint8_t *)prefix, addr_buf_size - 1,
&arr_dst[0], &arr_size);
TEST_ASSERT_EQUAL_INT(0, ret);
/* we should receive 20 entries 0-19 */
TEST_ASSERT_EQUAL_INT(20, arr_size);
#if (TEST_FIB_SHOW_OUTPUT == 1)
puts("");
for (size_t i = 0; i < arr_size; ++i) {
for (size_t j = 0; j < arr_dst[i].dest_size; ++j) {
printf("%c", (char)arr_dst[i].dest[j]);
}
puts("");
}
#endif
fib_deinit(&test_fib_table);
}
/*
* @brief call get next hop with invalid parameters
* It is expected to receive -EINVAL on calling get_next_hop()
*/
static void test_fib_18_get_next_hop_invalid_parameters(void)
{
size_t add_buf_size = 16; /* includes space for terminating \0 */
char addr_dst[] = "Test address 13";
char addr_expect[] = "Test address 02";
kernel_pid_t iface_id = KERNEL_PID_UNDEF;
uint32_t next_hop_flags = 0;
char addr_nxt[add_buf_size];
size_t entries = 20;
_fill_FIB_multiple(entries, 11);
int ret = fib_get_next_hop(&test_fib_table, NULL, NULL,
NULL, NULL, NULL, add_buf_size - 1, 0x13);
TEST_ASSERT_EQUAL_INT(-EINVAL, ret);
ret = fib_get_next_hop(&test_fib_table, &iface_id,
(uint8_t *)addr_nxt, &add_buf_size, &next_hop_flags,
(uint8_t *)addr_dst, add_buf_size - 1, 0x13);
TEST_ASSERT_EQUAL_INT(0, ret);
ret = strncmp(addr_expect, addr_nxt, add_buf_size);
TEST_ASSERT_EQUAL_INT(0, ret);
#if (TEST_FIB_SHOW_OUTPUT == 1)
fib_print_fib_table(&test_fib_table);
puts("");
universal_address_print_table();
puts("");
#endif
fib_deinit(&test_fib_table);
}
/*
* @brief testing default gateway address
*/
static void test_fib_19_default_gateway(void)
{
size_t add_buf_size = 16;
char addr_dst[add_buf_size];
char addr_nxt_hop[add_buf_size];
char addr_nxt[add_buf_size];
char addr_lookup[add_buf_size];
kernel_pid_t iface_id = KERNEL_PID_UNDEF;
uint32_t next_hop_flags = 0;
memset(addr_dst, 0, add_buf_size);
memset(addr_nxt, 0, add_buf_size);
memset(addr_nxt_hop, 0, add_buf_size);
memset(addr_lookup, 0, add_buf_size);
snprintf(addr_lookup, add_buf_size, "Some address X1");
/* set the bytes to 0x01..0x10 of the next-hop */
for (size_t i = 0; i < add_buf_size; i++) {
addr_nxt[i] = i+1;
}
/* add a default gateway entry */
fib_add_entry(&test_fib_table, 42, (uint8_t *)addr_dst,
add_buf_size, 0x123,
(uint8_t *)addr_nxt, add_buf_size, 0x23,
100000);
/* check if it matches all */
int ret = fib_get_next_hop(&test_fib_table, &iface_id,
(uint8_t *)addr_nxt_hop, &add_buf_size,
&next_hop_flags, (uint8_t *)addr_lookup,
add_buf_size, 0x123);
TEST_ASSERT_EQUAL_INT(0, ret);
TEST_ASSERT_EQUAL_INT(0, memcmp(addr_nxt, addr_nxt_hop, add_buf_size));
memset(addr_nxt_hop, 0, add_buf_size);
/* set the bytes to 0x02..0x11 of the new next-hop for the default gateway */
for (size_t i = 0; i < add_buf_size; ++i) {
addr_nxt[i] = i+2;
}
/* change the default gateway entry */
fib_add_entry(&test_fib_table, 42, (uint8_t *)addr_dst,
add_buf_size, 0x123, (uint8_t *)addr_nxt, add_buf_size, 0x24,
100000);
/* and check again if it matches all */
ret = fib_get_next_hop(&test_fib_table, &iface_id,
(uint8_t *)addr_nxt_hop, &add_buf_size, &next_hop_flags,
(uint8_t *)addr_lookup, add_buf_size, 0x123);
TEST_ASSERT_EQUAL_INT(0, ret);
TEST_ASSERT_EQUAL_INT(0, memcmp(addr_nxt, addr_nxt_hop, add_buf_size));
#if (TEST_FIB_SHOW_OUTPUT == 1)
fib_print_fib_table(&test_fib_table);
puts("");
universal_address_print_table();
puts("");
#endif
fib_deinit(&test_fib_table);
}
/*
* @brief testing prefix entry changing
*/
static void test_fib_20_replace_prefix(void)
{
size_t add_buf_size = 16;
char addr_dst[add_buf_size];
char addr_nxt_hop[add_buf_size];
char addr_nxt[add_buf_size];
char addr_lookup[add_buf_size];
kernel_pid_t iface_id = KERNEL_PID_UNDEF;
uint32_t next_hop_flags = 0;
memset(addr_dst, 0, add_buf_size);
memset(addr_nxt, 0, add_buf_size);
memset(addr_nxt_hop, 0, add_buf_size);
memset(addr_lookup, 0, add_buf_size);
/* set the bytes to 0x01..0x10 of the next-hop */
for (size_t i = 0; i < add_buf_size; i++) {
addr_nxt[i] = i+1;
}
/* set the bytes to 0x01..0x08 of the destination prefix */
for (size_t i = 0; i < add_buf_size/2; i++) {
addr_dst[i] = i+1;
}
/* set the bytes to 0x01..0x0e of the lookup address */
for (size_t i = 0; i < 14; i++) {
addr_lookup[i] = i+1;
}
uint32_t prefix_len = _get_prefix_bits_num(addr_dst, strlen(addr_dst));
/* add a prefix entry */
fib_add_entry(&test_fib_table, 42, (uint8_t *)addr_dst,
add_buf_size, ((prefix_len << FIB_FLAG_NET_PREFIX_SHIFT) | 0x123),
(uint8_t *)addr_nxt, add_buf_size, 0x23,
100000);
/* check if it matches */
int ret = fib_get_next_hop(&test_fib_table, &iface_id,
(uint8_t *)addr_nxt_hop, &add_buf_size,
&next_hop_flags, (uint8_t *)addr_lookup,
add_buf_size, 0x123);
TEST_ASSERT_EQUAL_INT(0, ret);
TEST_ASSERT_EQUAL_INT(0, memcmp(addr_nxt, addr_nxt_hop, add_buf_size));
fib_remove_entry(&test_fib_table, (uint8_t *)addr_dst,
add_buf_size);
memset(addr_nxt_hop, 0, add_buf_size);
/* set the bytes to 0x02..0x11 of the new next-hop */
for (size_t i = 0; i < add_buf_size; ++i) {
addr_nxt[i] = i+2;
}
/* set the bytes to 0x01..0x0d of the new destination prefix */
for (size_t i = 0; i < 13; i++) {
addr_dst[i] = i+1;
}
prefix_len = _get_prefix_bits_num(addr_dst, strlen(addr_dst));
/* change the prefix entry */
fib_add_entry(&test_fib_table, 42, (uint8_t *)addr_dst,
add_buf_size, ((prefix_len << FIB_FLAG_NET_PREFIX_SHIFT) | 0x123),
(uint8_t *)addr_nxt, add_buf_size, 0x24,
100000);
/* and check again if it matches */
ret = fib_get_next_hop(&test_fib_table, &iface_id,
(uint8_t *)addr_nxt_hop, &add_buf_size, &next_hop_flags,
(uint8_t *)addr_lookup, add_buf_size, 0x123);
TEST_ASSERT_EQUAL_INT(0, ret);
TEST_ASSERT_EQUAL_INT(0, memcmp(addr_nxt, addr_nxt_hop, add_buf_size));
#if (TEST_FIB_SHOW_OUTPUT == 1)
fib_print_fib_table(&test_fib_table);
puts("");
universal_address_print_table();
puts("");
#endif
fib_deinit(&test_fib_table);
}
Test *tests_fib_tests(void)
{
fib_init(&test_fib_table);
EMB_UNIT_TESTFIXTURES(fixtures) {
new_TestFixture(test_fib_01_fill_unique_entries),
new_TestFixture(test_fib_02_fill_multiple_entries),
new_TestFixture(test_fib_03_removing_all_entries),
new_TestFixture(test_fib_04_remove_lower_half),
new_TestFixture(test_fib_05_remove_upper_half),
new_TestFixture(test_fib_06_remove_one_entry),
new_TestFixture(test_fib_07_remove_one_entry_multiple_times),
new_TestFixture(test_fib_08_remove_unknown),
new_TestFixture(test_fib_09_update_entry),
new_TestFixture(test_fib_10_add_exceed),
new_TestFixture(test_fib_11_get_next_hop_success),
new_TestFixture(test_fib_12_get_next_hop_fail),
new_TestFixture(test_fib_13_get_next_hop_fail_on_buffer_size),
new_TestFixture(test_fib_14_exact_and_prefix_match),
new_TestFixture(test_fib_15_get_lifetime),
new_TestFixture(test_fib_16_prefix_match),
new_TestFixture(test_fib_17_get_entry_set),
new_TestFixture(test_fib_18_get_next_hop_invalid_parameters),
new_TestFixture(test_fib_19_default_gateway),
new_TestFixture(test_fib_20_replace_prefix),
};
EMB_UNIT_TESTCALLER(fib_tests, NULL, NULL, fixtures);
return (Test *)&fib_tests;
}
void tests_fib(void)
{
TESTS_RUN(tests_fib_tests());
}
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