/*
- * Copyright (c) 2009 Nicira Networks.
+ * Copyright (c) 2009, 2010, 2011, 2014 Nicira, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
#include <config.h>
#include "csum.h"
+#include "crc32c.h"
#include <inttypes.h>
#include <netinet/in.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "random.h"
+#include "unaligned.h"
#include "util.h"
+#include "ovstest.h"
#undef NDEBUG
#include <assert.h>
struct test_case {
char *data;
- size_t size;
+ size_t size; /* Test requires a multiple of 4. */
uint16_t csum;
};
static const struct test_case test_cases[] = {
/* RFC 1071 section 3. */
- TEST_CASE("\x00\x01\xf2\x03\xf4\xf5\xf6\xf7", (uint16_t) ~0xddf2),
+ TEST_CASE("\x00\x01\xf2\x03"
+ "\xf4\xf5\xf6\xf7",
+ 0xffff - 0xddf2 /* ~0xddf2 */),
/* http://www.sbprojects.com/projects/tcpip/theory/theory14.htm */
- TEST_CASE("\x45\x00\x00\x28\x1F\xFD\x40\x00\x80\x06"
- "\x00\x00\xC0\xA8\x3B\x0A\xC0\xA8\x3B\x32",
+ TEST_CASE("\x45\x00\x00\x28"
+ "\x1F\xFD\x40\x00"
+ "\x80\x06\x00\x00"
+ "\xC0\xA8\x3B\x0A"
+ "\xC0\xA8\x3B\x32",
0xe345),
/* http://mathforum.org/library/drmath/view/54379.html */
- TEST_CASE("\x86\x5e\xac\x60\x71\x2a\x81\xb5", 0xda60),
+ TEST_CASE("\x86\x5e\xac\x60"
+ "\x71\x2a\x81\xb5",
+ 0xda60),
};
static void
test_rfc1624(void)
{
/* "...an IP packet header in which a 16-bit field m = 0x5555..." */
- uint8_t data[32] =
- "\xfe\x8f\xc1\x14\x4b\x6f\x70\x2a\x80\x29\x78\xc0\x58\x81\x77\xaa"
- "\x66\x64\xfc\x96\x63\x97\x64\xee\x12\x53\x1d\xa9\x2d\xa9\x55\x55";
+ uint8_t data[32] = {
+ 0xfe, 0x8f, 0xc1, 0x14, 0x4b, 0x6f, 0x70, 0x2a,
+ 0x80, 0x29, 0x78, 0xc0, 0x58, 0x81, 0x77, 0xaa,
+ 0x66, 0x64, 0xfc, 0x96, 0x63, 0x97, 0x64, 0xee,
+ 0x12, 0x53, 0x1d, 0xa9, 0x2d, 0xa9, 0x55, 0x55
+ };
/* "...the one's complement sum of all other header octets is 0xCD7A." */
- assert(ntohs(csum(data, sizeof data - 2)) == (uint16_t) ~0xcd7a);
+ assert(ntohs(csum(data, sizeof data - 2)) == 0xffff - 0xcd7a);
/* "...the header checksum would be:
= ~(0x22D0 + ~0x5555 + 0x3285)
= ~0xFFFF
= 0x0000" */
- assert(recalc_csum16(0xdd2f, 0x5555, 0x3285) == 0x0000);
+ assert(recalc_csum16(htons(0xdd2f), htons(0x5555), htons(0x3285))
+ == htons(0x0000));
mark('#');
}
-int
-main(void)
+/* CRC32C checksum tests, based on Intel IPPs, Chapter 13,
+ * ippsCRC32C_8u() example, found at the following location:
+ * http://software.intel.com/sites/products/documentation/hpc/ipp/ipps/ */
+static void
+test_crc32c(void)
+{
+ int i;
+ uint8_t data[48] = {
+ 0x01, 0xc0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x14, 0x00, 0x00, 0x00, 0x00, 0x00, 0x04, 0x00,
+ 0x00, 0x00, 0x00, 0x14, 0x00, 0x00, 0x00, 0x18,
+ 0x28, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
+ };
+
+ /* iSCSI Read PDU */
+ assert(ntohl(crc32c(data, 48)) == 0x563a96d9L);
+
+ /* 32 bytes of all zeroes */
+ for (i = 0; i < 32; i++) data[i] = 0x00;
+ assert(ntohl(crc32c(data, 32)) == 0xaa36918aL);
+
+ /* 32 bytes of all ones */
+ for (i = 0; i < 32; i++) data[i] = 0xff;
+ assert(ntohl(crc32c(data, 32)) == 0x43aba862L);
+
+ /* 32 bytes of incrementing 00..1f */
+ for (i = 0; i < 32; i++) data[i] = i;
+ assert(ntohl(crc32c(data, 32)) == 0x4e79dd46L);
+
+ /* 32 bytes of decrementing 1f..00 */
+ for (i = 0; i < 32; i++) data[i] = 31 - i;
+ assert(ntohl(crc32c(data, 32)) == 0x5cdb3f11L);
+
+ mark('#');
+}
+
+
+static void
+test_csum_main(int argc OVS_UNUSED, char *argv[] OVS_UNUSED)
{
const struct test_case *tc;
int i;
for (tc = test_cases; tc < &test_cases[ARRAY_SIZE(test_cases)]; tc++) {
- const uint16_t *data16 = (const uint16_t *) tc->data;
- const uint32_t *data32 = (const uint32_t *) tc->data;
+ const void *data = tc->data;
+ const ovs_be16 *data16 = (OVS_FORCE const ovs_be16 *) data;
+ const ovs_be32 *data32 = (OVS_FORCE const ovs_be32 *) data;
uint32_t partial;
- size_t i;
/* Test csum(). */
assert(ntohs(csum(tc->data, tc->size)) == tc->csum);
/* Test csum_add16(). */
partial = 0;
for (i = 0; i < tc->size / 2; i++) {
- partial = csum_add16(partial, data16[i]);
+ partial = csum_add16(partial, get_unaligned_be16(&data16[i]));
}
assert(ntohs(csum_finish(partial)) == tc->csum);
mark('.');
/* Test csum_add32(). */
partial = 0;
for (i = 0; i < tc->size / 4; i++) {
- partial = csum_add32(partial, data32[i]);
+ partial = csum_add32(partial, get_unaligned_be32(&data32[i]));
}
assert(ntohs(csum_finish(partial)) == tc->csum);
mark('.');
partial = 0;
for (i = 0; i < tc->size / 4; i++) {
if (i % 2) {
- partial = csum_add32(partial, data32[i]);
+ partial = csum_add32(partial, get_unaligned_be32(&data32[i]));
} else {
- partial = csum_add16(partial, data16[i * 2]);
- partial = csum_add16(partial, data16[i * 2 + 1]);
+ ovs_be16 u0 = get_unaligned_be16(&data16[i * 2]);
+ ovs_be16 u1 = get_unaligned_be16(&data16[i * 2 + 1]);
+ partial = csum_add16(partial, u0);
+ partial = csum_add16(partial, u1);
}
}
assert(ntohs(csum_finish(partial)) == tc->csum);
}
test_rfc1624();
+ test_crc32c();
/* Test recalc_csum16(). */
for (i = 0; i < 32; i++) {
- uint16_t old_u16, new_u16;
- uint16_t old_csum;
- uint16_t data[16];
+ ovs_be16 old_u16, new_u16;
+ ovs_be16 old_csum;
+ ovs_be16 data[16];
int j, index;
for (j = 0; j < ARRAY_SIZE(data); j++) {
- data[j] = random_uint32();
+ data[j] = (OVS_FORCE ovs_be16) random_uint32();
}
old_csum = csum(data, sizeof data);
index = random_range(ARRAY_SIZE(data));
old_u16 = data[index];
- new_u16 = data[index] = random_uint32();
+ new_u16 = data[index] = (OVS_FORCE ovs_be16) random_uint32();
assert(csum(data, sizeof data)
== recalc_csum16(old_csum, old_u16, new_u16));
mark('.');
/* Test recalc_csum32(). */
for (i = 0; i < 32; i++) {
- uint32_t old_u32, new_u32;
- uint16_t old_csum;
- uint32_t data[16];
+ ovs_be32 old_u32, new_u32;
+ ovs_be16 old_csum;
+ ovs_be32 data[16];
int j, index;
for (j = 0; j < ARRAY_SIZE(data); j++) {
- data[j] = random_uint32();
+ data[j] = (OVS_FORCE ovs_be32) random_uint32();
}
old_csum = csum(data, sizeof data);
index = random_range(ARRAY_SIZE(data));
old_u32 = data[index];
- new_u32 = data[index] = random_uint32();
+ new_u32 = data[index] = (OVS_FORCE ovs_be32) random_uint32();
assert(csum(data, sizeof data)
== recalc_csum32(old_csum, old_u32, new_u32));
mark('.');
mark('#');
putchar('\n');
-
- return 0;
}
+
+OVSTEST_REGISTER("test-csum", test_csum_main);
git://git.onelab.eu / sliver-openvswitch.git / blobdiff