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Diffstat (limited to 'src/spdk/test/unit/lib/util/crc32c.c/crc32c_ut.c')
| -rw-r--r-- | src/spdk/test/unit/lib/util/crc32c.c/crc32c_ut.c | 145 |
1 files changed, 145 insertions, 0 deletions
diff --git a/src/spdk/test/unit/lib/util/crc32c.c/crc32c_ut.c b/src/spdk/test/unit/lib/util/crc32c.c/crc32c_ut.c new file mode 100644 index 000000000..6313d7bf6 --- /dev/null +++ b/src/spdk/test/unit/lib/util/crc32c.c/crc32c_ut.c @@ -0,0 +1,145 @@ +/*- + * 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; +} |