a6dbe3721e
per Intel policy to include file commit date using git cmd below. The policy does not apply to non-Intel (C) notices. git log --follow -C90% --format=%ad --date default <file> | tail -1 and then pull just the 4 digit year from the result. Intel copyrights were not added to files where Intel either had no contribution ot the contribution lacked substance (ie license header updates, formatting changes, etc). Contribution date used "--follow -C95%" to get the most accurate date. Note that several files in this patch didn't end the license/(c) block with a blank comment line so these were added as the vast majority of files do have this last blank line. Simply there for consistency. Signed-off-by: paul luse <paul.e.luse@intel.com> Change-Id: Id5b7ce4f658fe87132f14139ead58d6e285c04d4 Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/15192 Tested-by: SPDK CI Jenkins <sys_sgci@intel.com> Reviewed-by: Jim Harris <james.r.harris@intel.com> Reviewed-by: Ben Walker <benjamin.walker@intel.com> Community-CI: Mellanox Build Bot
139 lines
3.4 KiB
C
139 lines
3.4 KiB
C
/* SPDX-License-Identifier: BSD-3-Clause
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* Copyright (C) 2017 Intel Corporation.
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* All rights reserved.
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*/
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#include "spdk/stdinc.h"
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#include "spdk_cunit.h"
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#include "util/crc32.c"
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#include "util/crc32c.c"
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static void
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test_crc32c(void)
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{
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uint32_t crc;
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char buf[1024], buf1[1024];
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struct iovec iov[2] = {};
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/* Verify a string's CRC32-C value against the known correct result. */
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snprintf(buf, sizeof(buf), "%s", "Hello world!");
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crc = 0xFFFFFFFFu;
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crc = spdk_crc32c_update(buf, strlen(buf), crc);
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crc ^= 0xFFFFFFFFu;
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CU_ASSERT(crc == 0x7b98e751);
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crc = 0xFFFFFFFFu;
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iov[0].iov_base = buf;
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iov[0].iov_len = strlen(buf);
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crc = spdk_crc32c_iov_update(iov, 1, crc);
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crc ^= 0xFFFFFFFFu;
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CU_ASSERT(crc == 0x7b98e751);
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crc = 0xFFFFFFFFu;
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snprintf(buf, sizeof(buf), "%s", "Hello");
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iov[0].iov_base = buf;
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iov[0].iov_len = strlen(buf);
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snprintf(buf1, sizeof(buf1), "%s", " world!");
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iov[1].iov_base = buf1;
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iov[1].iov_len = strlen(buf1);
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crc = spdk_crc32c_iov_update(iov, 2, crc);
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crc ^= 0xFFFFFFFFu;
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CU_ASSERT(crc == 0x7b98e751);
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/*
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* The main loop of the optimized CRC32-C implementation processes data in 8-byte blocks,
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* followed by a loop to handle the 0-7 trailing bytes.
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* Test all buffer sizes from 0 to 7 in order to hit all possible trailing byte counts.
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*/
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/* 0-byte buffer should not modify CRC at all, so final result should be ~0 ^ ~0 == 0 */
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snprintf(buf, sizeof(buf), "%s", "");
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crc = 0xFFFFFFFFu;
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crc = spdk_crc32c_update(buf, strlen(buf), crc);
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crc ^= 0xFFFFFFFFu;
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CU_ASSERT(crc == 0);
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/* 1-byte buffer */
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snprintf(buf, sizeof(buf), "%s", "1");
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crc = 0xFFFFFFFFu;
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crc = spdk_crc32c_update(buf, strlen(buf), crc);
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crc ^= 0xFFFFFFFFu;
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CU_ASSERT(crc == 0x90F599E3);
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/* 2-byte buffer */
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snprintf(buf, sizeof(buf), "%s", "12");
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crc = 0xFFFFFFFFu;
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crc = spdk_crc32c_update(buf, strlen(buf), crc);
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crc ^= 0xFFFFFFFFu;
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CU_ASSERT(crc == 0x7355C460);
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/* 3-byte buffer */
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snprintf(buf, sizeof(buf), "%s", "123");
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crc = 0xFFFFFFFFu;
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crc = spdk_crc32c_update(buf, strlen(buf), crc);
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crc ^= 0xFFFFFFFFu;
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CU_ASSERT(crc == 0x107B2FB2);
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/* 4-byte buffer */
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snprintf(buf, sizeof(buf), "%s", "1234");
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crc = 0xFFFFFFFFu;
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crc = spdk_crc32c_update(buf, strlen(buf), crc);
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crc ^= 0xFFFFFFFFu;
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CU_ASSERT(crc == 0xF63AF4EE);
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/* 5-byte buffer */
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snprintf(buf, sizeof(buf), "%s", "12345");
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crc = 0xFFFFFFFFu;
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crc = spdk_crc32c_update(buf, strlen(buf), crc);
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crc ^= 0xFFFFFFFFu;
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CU_ASSERT(crc == 0x18D12335);
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/* 6-byte buffer */
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snprintf(buf, sizeof(buf), "%s", "123456");
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crc = 0xFFFFFFFFu;
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crc = spdk_crc32c_update(buf, strlen(buf), crc);
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crc ^= 0xFFFFFFFFu;
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CU_ASSERT(crc == 0x41357186);
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/* 7-byte buffer */
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snprintf(buf, sizeof(buf), "%s", "1234567");
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crc = 0xFFFFFFFFu;
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crc = spdk_crc32c_update(buf, strlen(buf), crc);
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crc ^= 0xFFFFFFFFu;
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CU_ASSERT(crc == 0x124297EA);
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/* Test a buffer of exactly 8 bytes (one block in the main CRC32-C loop). */
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snprintf(buf, sizeof(buf), "%s", "12345678");
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crc = 0xFFFFFFFFu;
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crc = spdk_crc32c_update(buf, strlen(buf), crc);
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crc ^= 0xFFFFFFFFu;
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CU_ASSERT(crc == 0x6087809A);
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}
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int
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main(int argc, char **argv)
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{
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CU_pSuite suite = NULL;
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unsigned int num_failures;
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CU_set_error_action(CUEA_ABORT);
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CU_initialize_registry();
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suite = CU_add_suite("crc32c", NULL, NULL);
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CU_ADD_TEST(suite, test_crc32c);
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CU_basic_set_mode(CU_BRM_VERBOSE);
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CU_basic_run_tests();
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num_failures = CU_get_number_of_failures();
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CU_cleanup_registry();
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return num_failures;
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}
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