tests-ipv6_hdr.c
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/*
* Copyright (C) 2014 Martine Lenders <mlenders@inf.fu-berlin.de>
*
* 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.
*/
/**
* @{
*
* @file
*/
#include <errno.h>
#include <stdlib.h>
#include "embUnit.h"
#include "net/ipv6/addr.h"
#include "net/ipv6/hdr.h"
#include "net/gnrc/pktbuf.h"
#include "net/protnum.h"
#include "net/inet_csum.h"
#include "unittests-constants.h"
#include "tests-ipv6_hdr.h"
#define OTHER_BYTE (TEST_UINT16 >> 8)
#define DEFAULT_TEST_SRC { { \
0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, \
0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f \
} \
}
#define DEFAULT_TEST_DST { { \
0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, \
0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f \
} \
}
static void test_ipv6_hdr_set_version(void)
{
uint8_t val[] = { TEST_UINT8 };
ipv6_hdr_set_version((ipv6_hdr_t *)val);
/*
* Header format:
* 1
* +----+--
* | 6 |
* +----+--
*/
TEST_ASSERT_EQUAL_INT(0x60, val[0] & 0xf0);
TEST_ASSERT_EQUAL_INT(TEST_UINT8 & 0x0f, val[0] & 0x0f);
}
static void test_ipv6_hdr_get_version(void)
{
uint8_t val[] = { TEST_UINT8 };
/*
* Header format:
* 8
* +----+----
* | 6 |
* +----+----
*/
TEST_ASSERT_EQUAL_INT(TEST_UINT8 >> 4, ipv6_hdr_get_version((ipv6_hdr_t *)val));
}
static void test_ipv6_hdr_is_ipv6_hdr__false(void)
{
/*
* Header format:
* 8
* +----+----
* | 6 |
* +----+----
*/
uint8_t val[] = { 0 };
TEST_ASSERT(!ipv6_hdr_is((ipv6_hdr_t *)val));
}
static void test_ipv6_hdr_is_ipv6_hdr__true(void)
{
/*
* Header format:
* 8
* +----+----
* | 6 |
* +----+----
*/
uint8_t val[] = { 0x60 | (TEST_UINT8 & 0x0f) };
TEST_ASSERT(ipv6_hdr_is((ipv6_hdr_t *)val));
}
static void test_ipv6_hdr_set_tc(void)
{
uint8_t val[] = { TEST_UINT8, 0 };
ipv6_hdr_set_tc((ipv6_hdr_t *)val, OTHER_BYTE);
/*
* Header format:
* 8
* +----+--------+--
* | 6 | tc |
* +----+--------+--
*/
TEST_ASSERT_EQUAL_INT((TEST_UINT8 & 0xf0) | (OTHER_BYTE >> 4), val[0]);
TEST_ASSERT_EQUAL_INT((OTHER_BYTE << 4) & 0xf0, val[1]);
}
static void test_ipv6_hdr_set_tc_ecn(void)
{
uint8_t val[] = { TEST_UINT8 };
ipv6_hdr_set_tc_ecn((ipv6_hdr_t *)val, OTHER_BYTE);
/*
* Header format:
* 8
* +----+--------+--
* | 6 | tc |
* +----+--------+--
* / \
* 8 12
* +----+------------+
* | ecn| dscp |
* +----+------------+
*/
TEST_ASSERT_EQUAL_INT((TEST_UINT8 & 0xf3) | ((OTHER_BYTE & 0x03) << 2), val[0]);
}
static void test_ipv6_hdr_set_tc_dscp(void)
{
uint8_t val[] = { TEST_UINT8, 0 };
ipv6_hdr_set_tc_dscp((ipv6_hdr_t *)val, OTHER_BYTE);
/*
* Header format:
* 8
* +----+--------+--
* | 6 | tc |
* +----+--------+--
* / \
* 8 12
* +----+------------+
* | ecn| dscp |
* +----+------------+
*/
TEST_ASSERT_EQUAL_INT((TEST_UINT8 & 0xfc) | ((OTHER_BYTE & 0x30) >> 4), val[0]);
TEST_ASSERT_EQUAL_INT((OTHER_BYTE & 0x0f) << 4, val[1]);
}
static void test_ipv6_hdr_get_tc(void)
{
uint8_t val[] = { TEST_UINT8, OTHER_BYTE };
/*
* Header format:
* 8
* +----+--------+--
* | 6 | tc |
* +----+--------+--
*/
TEST_ASSERT_EQUAL_INT(((TEST_UINT8 << 4) & 0xf0) | (OTHER_BYTE >> 4),
ipv6_hdr_get_tc((ipv6_hdr_t *)val));
}
static void test_ipv6_hdr_get_tc_ecn(void)
{
uint8_t val[] = { TEST_UINT8 };
/*
* Header format:
* 8
* +----+--------+--
* | 6 | tc |
* +----+--------+--
* / \
* 8 12
* +----+------------+
* | ecn| dscp |
* +----+------------+
*/
TEST_ASSERT_EQUAL_INT(TEST_UINT8 & 0x03, ipv6_hdr_get_tc_ecn((ipv6_hdr_t *)val));
}
static void test_ipv6_hdr_get_tc_dscp(void)
{
uint8_t val[] = { TEST_UINT8, OTHER_BYTE };
/*
* Header format:
* 8
* +----+--------+--
* | 6 | tc |
* +----+--------+--
* / \
* 8 12
* +----+------------+
* | ecn| dscp |
* +----+------------+
*/
TEST_ASSERT_EQUAL_INT(((TEST_UINT8 & 0x03) << 4) | ((OTHER_BYTE & 0xf0) >> 4),
ipv6_hdr_get_tc_dscp((ipv6_hdr_t *)val));
}
static void test_ipv6_hdr_set_fl(void)
{
uint8_t val[] = { 0, TEST_UINT8, 0, 0 };
ipv6_hdr_set_fl((ipv6_hdr_t *)val, TEST_UINT32);
/*
* Header format:
* 8 16 24 32
* +----+--------+--------------------+
* | 6 | tc | flow label |
* +----+--------+--------------------+
*/
TEST_ASSERT_EQUAL_INT(0, val[0]);
TEST_ASSERT_EQUAL_INT((TEST_UINT8 & 0xf0) | ((TEST_UINT32 & 0x000f0000) >> 16),
val[1]);
TEST_ASSERT_EQUAL_INT((TEST_UINT32 & 0x0000ff00) >> 8,
val[2]);
TEST_ASSERT_EQUAL_INT((TEST_UINT32 & 0x000000ff), val[3]);
}
static void test_ipv6_hdr_get_fl(void)
{
uint8_t val[] = { TEST_UINT8, OTHER_BYTE, 0, 0 };
/*
* Header format:
* 8 16 24 32
* +----+--------+--------------------+
* | 6 | tc | flow label |
* +----+--------+--------------------+
*/
TEST_ASSERT_EQUAL_INT((uint32_t)(OTHER_BYTE & 0x0f) << 16,
ipv6_hdr_get_fl((ipv6_hdr_t *)val));
}
static void test_ipv6_hdr_inet_csum__initial_sum_overflows(void)
{
uint16_t sum = 0xffff;
uint16_t res = 0, payload_len = 0;
uint8_t val[] = {
0x60, 0x00, 0x00, 0x00, 0x00, 0x0c, 0x3a, 0x40, /* IPv6 header */
0xfe, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0xc8, 0x86, 0xcd, 0xff, 0xfe, 0x0f, 0xce, 0x49,
0xfe, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x18, 0xaa, 0x2d, 0xff, 0xfe, 0x44, 0x43, 0xac
};
/* calculate checksum of pseudo header */
res = ipv6_hdr_inet_csum(sum, (ipv6_hdr_t *)&val, PROTNUM_ICMPV6,
payload_len);
res = ~res; /* take 1's-complement for correct checksum */
TEST_ASSERT_EQUAL_INT(0x1749, res);
}
static void test_ipv6_hdr_inet_csum__initial_sum_0(void)
{
/* source: https://www.cloudshark.org/captures/ea72fbab241b (No. 56) */
uint16_t res = 0, payload_len;
uint8_t val[] = {
0x60, 0x00, 0x00, 0x00, 0x00, 0x38, 0x3a, 0xff, /* IPv6 header */
0xfe, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x5a, 0x6d, 0x8f, 0xff, 0xfe, 0x56, 0x30, 0x09,
0xff, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01,
0x86, 0x00, 0x00, 0x00, 0x40, 0x58, 0x07, 0x08, /* ICMPv6 payload */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* set checksum to 0 */
0x03, 0x04, 0x40, 0xc0, 0x00, 0x00, 0x00, 0x1e,
0x00, 0x00, 0x00, 0x14, 0x00, 0x00, 0x00, 0x00,
0x20, 0x02, 0x18, 0x3d, 0xdb, 0xa4, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x01, 0x01, 0x58, 0x6d, 0x8f, 0x56, 0x30, 0x09
};
payload_len = sizeof(val) - sizeof(ipv6_hdr_t);
/* calculate checksum of pseudo header */
res = ipv6_hdr_inet_csum(0, (ipv6_hdr_t *)&val, PROTNUM_ICMPV6,
payload_len);
/* calculate checksum of payload */
res = inet_csum(res, val + sizeof(ipv6_hdr_t), payload_len);
res = ~res; /* take 1's-complement for correct checksum */
TEST_ASSERT_EQUAL_INT(0xab32, res);
}
Test *tests_ipv6_hdr_tests(void)
{
EMB_UNIT_TESTFIXTURES(fixtures) {
new_TestFixture(test_ipv6_hdr_set_version),
new_TestFixture(test_ipv6_hdr_get_version),
new_TestFixture(test_ipv6_hdr_is_ipv6_hdr__false),
new_TestFixture(test_ipv6_hdr_is_ipv6_hdr__true),
new_TestFixture(test_ipv6_hdr_set_tc),
new_TestFixture(test_ipv6_hdr_set_tc_ecn),
new_TestFixture(test_ipv6_hdr_set_tc_dscp),
new_TestFixture(test_ipv6_hdr_get_tc),
new_TestFixture(test_ipv6_hdr_get_tc_ecn),
new_TestFixture(test_ipv6_hdr_get_tc_dscp),
new_TestFixture(test_ipv6_hdr_set_fl),
new_TestFixture(test_ipv6_hdr_get_fl),
new_TestFixture(test_ipv6_hdr_inet_csum__initial_sum_overflows),
new_TestFixture(test_ipv6_hdr_inet_csum__initial_sum_0),
};
EMB_UNIT_TESTCALLER(ipv6_hdr_tests, NULL, NULL, fixtures);
return (Test *)&ipv6_hdr_tests;
}
void tests_ipv6_hdr(void)
{
TESTS_RUN(tests_ipv6_hdr_tests());
}
/** @} */