1 /*- 2 * BSD LICENSE 3 * 4 * Copyright (c) Intel Corporation. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 11 * * Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * * Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in 15 * the documentation and/or other materials provided with the 16 * distribution. 17 * * Neither the name of Intel Corporation nor the names of its 18 * contributors may be used to endorse or promote products derived 19 * from this software without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 22 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 23 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 24 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 25 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 26 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 27 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 31 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32 */ 33 34 #include "spdk/stdinc.h" 35 36 #include "spdk_cunit.h" 37 38 #include "util/crc32.c" 39 #include "util/crc32c.c" 40 41 static void 42 test_crc32c(void) 43 { 44 uint32_t crc; 45 char buf[1024]; 46 47 /* Verify a string's CRC32-C value against the known correct result. */ 48 snprintf(buf, sizeof(buf), "%s", "Hello world!"); 49 crc = 0xFFFFFFFFu; 50 crc = spdk_crc32c_update(buf, strlen(buf), crc); 51 crc ^= 0xFFFFFFFFu; 52 CU_ASSERT(crc == 0x7b98e751); 53 54 /* 55 * The main loop of the optimized CRC32-C implementation processes data in 8-byte blocks, 56 * followed by a loop to handle the 0-7 trailing bytes. 57 * Test all buffer sizes from 0 to 7 in order to hit all possible trailing byte counts. 58 */ 59 60 /* 0-byte buffer should not modify CRC at all, so final result should be ~0 ^ ~0 == 0 */ 61 snprintf(buf, sizeof(buf), "%s", ""); 62 crc = 0xFFFFFFFFu; 63 crc = spdk_crc32c_update(buf, strlen(buf), crc); 64 crc ^= 0xFFFFFFFFu; 65 CU_ASSERT(crc == 0); 66 67 /* 1-byte buffer */ 68 snprintf(buf, sizeof(buf), "%s", "1"); 69 crc = 0xFFFFFFFFu; 70 crc = spdk_crc32c_update(buf, strlen(buf), crc); 71 crc ^= 0xFFFFFFFFu; 72 CU_ASSERT(crc == 0x90F599E3); 73 74 /* 2-byte buffer */ 75 snprintf(buf, sizeof(buf), "%s", "12"); 76 crc = 0xFFFFFFFFu; 77 crc = spdk_crc32c_update(buf, strlen(buf), crc); 78 crc ^= 0xFFFFFFFFu; 79 CU_ASSERT(crc == 0x7355C460); 80 81 /* 3-byte buffer */ 82 snprintf(buf, sizeof(buf), "%s", "123"); 83 crc = 0xFFFFFFFFu; 84 crc = spdk_crc32c_update(buf, strlen(buf), crc); 85 crc ^= 0xFFFFFFFFu; 86 CU_ASSERT(crc == 0x107B2FB2); 87 88 /* 4-byte buffer */ 89 snprintf(buf, sizeof(buf), "%s", "1234"); 90 crc = 0xFFFFFFFFu; 91 crc = spdk_crc32c_update(buf, strlen(buf), crc); 92 crc ^= 0xFFFFFFFFu; 93 CU_ASSERT(crc == 0xF63AF4EE); 94 95 /* 5-byte buffer */ 96 snprintf(buf, sizeof(buf), "%s", "12345"); 97 crc = 0xFFFFFFFFu; 98 crc = spdk_crc32c_update(buf, strlen(buf), crc); 99 crc ^= 0xFFFFFFFFu; 100 CU_ASSERT(crc == 0x18D12335); 101 102 /* 6-byte buffer */ 103 snprintf(buf, sizeof(buf), "%s", "123456"); 104 crc = 0xFFFFFFFFu; 105 crc = spdk_crc32c_update(buf, strlen(buf), crc); 106 crc ^= 0xFFFFFFFFu; 107 CU_ASSERT(crc == 0x41357186); 108 109 /* 7-byte buffer */ 110 snprintf(buf, sizeof(buf), "%s", "1234567"); 111 crc = 0xFFFFFFFFu; 112 crc = spdk_crc32c_update(buf, strlen(buf), crc); 113 crc ^= 0xFFFFFFFFu; 114 CU_ASSERT(crc == 0x124297EA); 115 116 /* Test a buffer of exactly 8 bytes (one block in the main CRC32-C loop). */ 117 snprintf(buf, sizeof(buf), "%s", "12345678"); 118 crc = 0xFFFFFFFFu; 119 crc = spdk_crc32c_update(buf, strlen(buf), crc); 120 crc ^= 0xFFFFFFFFu; 121 CU_ASSERT(crc == 0x6087809A); 122 } 123 124 int 125 main(int argc, char **argv) 126 { 127 CU_pSuite suite = NULL; 128 unsigned int num_failures; 129 130 if (CU_initialize_registry() != CUE_SUCCESS) { 131 return CU_get_error(); 132 } 133 134 suite = CU_add_suite("crc32c", NULL, NULL); 135 if (suite == NULL) { 136 CU_cleanup_registry(); 137 return CU_get_error(); 138 } 139 140 if ( 141 CU_add_test(suite, "test_crc32c", test_crc32c) == NULL) { 142 CU_cleanup_registry(); 143 return CU_get_error(); 144 } 145 146 CU_basic_set_mode(CU_BRM_VERBOSE); 147 148 CU_basic_run_tests(); 149 150 num_failures = CU_get_number_of_failures(); 151 CU_cleanup_registry(); 152 153 return num_failures; 154 } 155