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/*-
* BSD LICENSE
*
* Copyright (c) Intel Corporation.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Intel Corporation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "spdk/stdinc.h"
#include "spdk_cunit.h"
#include "util/crc32.c"
#include "util/crc32c.c"
static void
test_crc32c(void)
{
uint32_t crc;
char buf[1024];
/* Verify a string's CRC32-C value against the known correct result. */
snprintf(buf, sizeof(buf), "%s", "Hello world!");
crc = 0xFFFFFFFFu;
crc = spdk_crc32c_update(buf, strlen(buf), crc);
crc ^= 0xFFFFFFFFu;
CU_ASSERT(crc == 0x7b98e751);
/*
* The main loop of the optimized CRC32-C implementation processes data in 8-byte blocks,
* followed by a loop to handle the 0-7 trailing bytes.
* Test all buffer sizes from 0 to 7 in order to hit all possible trailing byte counts.
*/
/* 0-byte buffer should not modify CRC at all, so final result should be ~0 ^ ~0 == 0 */
snprintf(buf, sizeof(buf), "%s", "");
crc = 0xFFFFFFFFu;
crc = spdk_crc32c_update(buf, strlen(buf), crc);
crc ^= 0xFFFFFFFFu;
CU_ASSERT(crc == 0);
/* 1-byte buffer */
snprintf(buf, sizeof(buf), "%s", "1");
crc = 0xFFFFFFFFu;
crc = spdk_crc32c_update(buf, strlen(buf), crc);
crc ^= 0xFFFFFFFFu;
CU_ASSERT(crc == 0x90F599E3);
/* 2-byte buffer */
snprintf(buf, sizeof(buf), "%s", "12");
crc = 0xFFFFFFFFu;
crc = spdk_crc32c_update(buf, strlen(buf), crc);
crc ^= 0xFFFFFFFFu;
CU_ASSERT(crc == 0x7355C460);
/* 3-byte buffer */
snprintf(buf, sizeof(buf), "%s", "123");
crc = 0xFFFFFFFFu;
crc = spdk_crc32c_update(buf, strlen(buf), crc);
crc ^= 0xFFFFFFFFu;
CU_ASSERT(crc == 0x107B2FB2);
/* 4-byte buffer */
snprintf(buf, sizeof(buf), "%s", "1234");
crc = 0xFFFFFFFFu;
crc = spdk_crc32c_update(buf, strlen(buf), crc);
crc ^= 0xFFFFFFFFu;
CU_ASSERT(crc == 0xF63AF4EE);
/* 5-byte buffer */
snprintf(buf, sizeof(buf), "%s", "12345");
crc = 0xFFFFFFFFu;
crc = spdk_crc32c_update(buf, strlen(buf), crc);
crc ^= 0xFFFFFFFFu;
CU_ASSERT(crc == 0x18D12335);
/* 6-byte buffer */
snprintf(buf, sizeof(buf), "%s", "123456");
crc = 0xFFFFFFFFu;
crc = spdk_crc32c_update(buf, strlen(buf), crc);
crc ^= 0xFFFFFFFFu;
CU_ASSERT(crc == 0x41357186);
/* 7-byte buffer */
snprintf(buf, sizeof(buf), "%s", "1234567");
crc = 0xFFFFFFFFu;
crc = spdk_crc32c_update(buf, strlen(buf), crc);
crc ^= 0xFFFFFFFFu;
CU_ASSERT(crc == 0x124297EA);
/* Test a buffer of exactly 8 bytes (one block in the main CRC32-C loop). */
snprintf(buf, sizeof(buf), "%s", "12345678");
crc = 0xFFFFFFFFu;
crc = spdk_crc32c_update(buf, strlen(buf), crc);
crc ^= 0xFFFFFFFFu;
CU_ASSERT(crc == 0x6087809A);
}
int
main(int argc, char **argv)
{
CU_pSuite suite = NULL;
unsigned int num_failures;
CU_set_error_action(CUEA_ABORT);
CU_initialize_registry();
suite = CU_add_suite("crc32c", NULL, NULL);
CU_ADD_TEST(suite, test_crc32c);
CU_basic_set_mode(CU_BRM_VERBOSE);
CU_basic_run_tests();
num_failures = CU_get_number_of_failures();
CU_cleanup_registry();
return num_failures;
}
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