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/*
* Copyright 2013 Google Inc.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301, USA.
*/
/*
* Author: ncardwell@google.com (Neal Cardwell)
*
* Unit test for checksum.c.
*/
#include "checksum.h"
#include <arpa/inet.h>
#include "assert.h"
#include "ip.h"
#include "ipv6.h"
#include "sctp.h"
#include "tcp.h"
static void test_tcp_udp_v4_checksum(void)
{
u8 data[] = {
0x45, 0x00, 0x00, 0x3c, 0x00, 0x00, 0x00, 0x00,
0xff, 0x06, 0xf9, 0x10, 0x01, 0x01, 0x01, 0x01,
0xc0, 0xa8, 0x00, 0x01, 0x04, 0xd2, 0xeb, 0x35,
0x00, 0x00, 0x00, 0x00, 0xc6, 0xf0, 0x56, 0x00,
0xa0, 0x12, 0x16, 0xa0, 0x54, 0x12, 0x00, 0x00,
0x02, 0x04, 0x05, 0xb4, 0x04, 0x02, 0x08, 0x0a,
0x00, 0x00, 0x02, 0xbc, 0x00, 0x06, 0x0a, 0xd8,
0x01, 0x03, 0x03, 0x07,
};
struct in_addr src_ip, dst_ip;
struct tcp *tcp = (struct tcp *) (data + sizeof(struct ipv4));
int len = sizeof(data) - sizeof(struct ipv4);
u16 checksum = 0;
assert(inet_pton(AF_INET, "1.1.1.1", &src_ip) == 1);
assert(inet_pton(AF_INET, "192.168.0.1", &dst_ip) == 1);
checksum =
ntohs(tcp_udp_v4_checksum(src_ip, dst_ip, IPPROTO_TCP, tcp, len));
assert(checksum == 0);
tcp->check = 0;
checksum =
ntohs(tcp_udp_v4_checksum(src_ip, dst_ip, IPPROTO_TCP, tcp, len));
assert(checksum == 0x5412);
}
static void test_tcp_udp_v6_checksum(void)
{
u8 data[] = {
0x60, 0x00, 0x00, 0x00, 0x00, 0x20, 0x06, 0xff,
0x20, 0x01, 0x0d, 0xb8, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01,
0xfd, 0x3d, 0xfa, 0x7b, 0xd1, 0x7d, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01,
0xd3, 0xe2, 0x1f, 0x90, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x80, 0x02, 0x80, 0x18,
0x06, 0x60, 0x00, 0x00, 0x02, 0x04, 0x03, 0xe8,
0x04, 0x02, 0x01, 0x01, 0x01, 0x03, 0x03, 0x07,
};
struct ipv6 *ipv6 = (struct ipv6 *) (data);
struct tcp *tcp = (struct tcp *) (data + sizeof(struct ipv6));
int len = sizeof(data) - sizeof(struct ipv6);
u16 checksum = 0;
checksum =
ntohs(tcp_udp_v6_checksum(&ipv6->src_ip,
&ipv6->dst_ip,
IPPROTO_TCP, tcp, len));
assert(checksum == 0);
tcp->check = 0;
checksum =
ntohs(tcp_udp_v6_checksum(&ipv6->src_ip,
&ipv6->dst_ip,
IPPROTO_TCP, tcp, len));
assert(checksum == 0x0660);
}
static void test_ipv4_checksum(void)
{
u8 data[] = {
0x45, 0x00, 0x00, 0x3c, 0x00, 0x00, 0x00, 0x00,
0xff, 0x06, 0xf9, 0x10, 0x01, 0x01, 0x01, 0x01,
0xc0, 0xa8, 0x00, 0x01,
};
struct ipv4 *ip = (struct ipv4 *) data;
u16 checksum = 0;
checksum = ntohs(ipv4_checksum(data, sizeof(data)));
assert(checksum == 0);
ip->check = 0;
checksum = ntohs(ipv4_checksum(data, sizeof(data)));
assert(checksum == 0xf910);
}
static void test_sctp_crc32c(void)
{
u8 data[] = {
0x07, 0xd0, 0xd6, 0x61, 0x11, 0x0c, 0xc5, 0x6c,
0xda, 0xd7, 0x37, 0x74, 0x06, 0x00, 0x00, 0x0f,
0x00, 0x0c, 0x00, 0x0b, 0x47, 0x6f, 0x6f, 0x64,
0x62, 0x79, 0x65, 0x00,
};
struct sctp_common_header *sctp_common_header;
u32 crc32c;
sctp_common_header = (struct sctp_common_header *)data;
sctp_common_header->crc32c = 0;
crc32c = ntohl(sctp_crc32c(data, sizeof(data)));
assert(crc32c == 0xdad73774);
}
int main(void)
{
test_tcp_udp_v4_checksum();
test_tcp_udp_v6_checksum();
test_ipv4_checksum();
test_sctp_crc32c();
return 0;
}
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