diff options
Diffstat (limited to 'test/packetdrill/checksum_test.c')
| -rw-r--r-- | test/packetdrill/checksum_test.c | 140 |
1 files changed, 140 insertions, 0 deletions
diff --git a/test/packetdrill/checksum_test.c b/test/packetdrill/checksum_test.c new file mode 100644 index 0000000..08ef2e1 --- /dev/null +++ b/test/packetdrill/checksum_test.c @@ -0,0 +1,140 @@ +/* + * 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; +} |