1 /********************************************************************** 2 Copyright(c) 2011-2017 Intel Corporation All rights reserved. 3 4 Redistribution and use in source and binary forms, with or without 5 modification, are permitted provided that the following conditions 6 are met: 7 * Redistributions of source code must retain the above copyright 8 notice, this list of conditions and the following disclaimer. 9 * Redistributions in binary form must reproduce the above copyright 10 notice, this list of conditions and the following disclaimer in 11 the documentation and/or other materials provided with the 12 distribution. 13 * Neither the name of Intel Corporation nor the names of its 14 contributors may be used to endorse or promote products derived 15 from this software without specific prior written permission. 16 17 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 18 "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 19 LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 20 A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 21 OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 22 SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 23 LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24 DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25 THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 27 OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 **********************************************************************/ 29 30 #include <stdio.h> 31 #include <string.h> 32 #include <stdint.h> 33 #include <stdlib.h> 34 #include <assert.h> 35 #include "crc.h" 36 #include "crc_ref.h" 37 #include "test.h" 38 39 #ifndef RANDOMS 40 # define RANDOMS 20 41 #endif 42 #ifndef TEST_SEED 43 # define TEST_SEED 0x1234 44 #endif 45 46 #define MAX_BUF 2345 47 #define TEST_SIZE 217 48 #define TEST_LEN (8 * 1024) 49 50 typedef uint16_t u16; 51 typedef uint8_t u8; 52 53 // bitwise crc version 54 uint16_t crc16_t10dif_copy_ref(uint16_t seed, uint8_t * dst, uint8_t * src, uint64_t len); 55 56 void rand_buffer(unsigned char *buf, long buffer_size) 57 { 58 long i; 59 for (i = 0; i < buffer_size; i++) 60 buf[i] = rand(); 61 } 62 63 int memtst(unsigned char *buf, unsigned char c, int len) 64 { 65 int i; 66 for (i = 0; i < len; i++) 67 if (*buf++ != c) 68 return 1; 69 70 return 0; 71 } 72 73 int crc_copy_check(const char *description, u8 * dst, u8 * src, u8 dst_fill_val, int len, 74 int tot) 75 { 76 u16 seed; 77 int rem; 78 79 assert(tot >= len); 80 seed = rand(); 81 rem = tot - len; 82 memset(dst, dst_fill_val, tot); 83 84 // multi-binary crc version 85 u16 crc_dut = crc16_t10dif_copy(seed, dst, src, len); 86 u16 crc_ref = crc16_t10dif(seed, src, len); 87 if (crc_dut != crc_ref) { 88 printf("%s, crc gen fail: 0x%4x 0x%4x len=%d\n", description, crc_dut, 89 crc_ref, len); 90 return 1; 91 } else if (memcmp(dst, src, len)) { 92 printf("%s, copy fail: len=%d\n", description, len); 93 return 1; 94 } else if (memtst(&dst[len], dst_fill_val, rem)) { 95 printf("%s, writeover fail: len=%d\n", description, len); 96 return 1; 97 } 98 // bitwise crc version 99 crc_dut = crc16_t10dif_copy_ref(seed, dst, src, len); 100 crc_ref = crc16_t10dif_ref(seed, src, len); 101 if (crc_dut != crc_ref) { 102 printf("%s, crc gen fail (table-driven): 0x%4x 0x%4x len=%d\n", description, 103 crc_dut, crc_ref, len); 104 return 1; 105 } else if (memcmp(dst, src, len)) { 106 printf("%s, copy fail (table driven): len=%d\n", description, len); 107 return 1; 108 } else if (memtst(&dst[len], dst_fill_val, rem)) { 109 printf("%s, writeover fail (table driven): len=%d\n", description, len); 110 return 1; 111 } 112 return 0; 113 } 114 115 int main(int argc, char *argv[]) 116 { 117 int r = 0; 118 int i; 119 int len, tot; 120 u8 *src_raw = NULL, *dst_raw = NULL; 121 u8 *src, *dst; 122 123 printf("Test crc16_t10dif_copy_test:\n"); 124 src_raw = (u8 *) malloc(TEST_LEN); 125 if (NULL == src_raw) { 126 printf("alloc error: Fail"); 127 return -1; 128 } 129 dst_raw = (u8 *) malloc(TEST_LEN); 130 if (NULL == dst_raw) { 131 printf("alloc error: Fail"); 132 aligned_free(src_raw); 133 return -1; 134 } 135 src = src_raw; 136 dst = dst_raw; 137 138 srand(TEST_SEED); 139 140 // Test of all zeros 141 memset(src, 0, TEST_LEN); 142 r |= crc_copy_check("zero tst", dst, src, 0x5e, MAX_BUF, TEST_LEN); 143 144 // Another simple test pattern 145 memset(src, 0xff, TEST_LEN); 146 r |= crc_copy_check("simp tst", dst, src, 0x5e, MAX_BUF, TEST_LEN); 147 148 // Do a few short len random data tests 149 rand_buffer(src, TEST_LEN); 150 rand_buffer(dst, TEST_LEN); 151 for (i = 0; i < MAX_BUF; i++) { 152 r |= crc_copy_check("short len", dst, src, rand(), i, MAX_BUF); 153 } 154 #ifdef TEST_VERBOSE 155 printf("."); 156 #endif 157 158 // Do a few longer tests, random data 159 for (i = TEST_LEN; i >= (TEST_LEN - TEST_SIZE); i--) { 160 r |= crc_copy_check("long len", dst, src, rand(), i, TEST_LEN); 161 } 162 #ifdef TEST_VERBOSE 163 printf("."); 164 #endif 165 166 // Do random size, random data 167 for (i = 0; i < RANDOMS; i++) { 168 len = rand() % TEST_LEN; 169 r |= crc_copy_check("rand len", dst, src, rand(), len, TEST_LEN); 170 } 171 #ifdef TEST_VERBOSE 172 printf("."); 173 #endif 174 175 // Run tests at end of buffer 176 for (i = 0; i < RANDOMS; i++) { 177 len = rand() % TEST_LEN; 178 src = &src_raw[TEST_LEN - len - 1]; 179 dst = &dst_raw[TEST_LEN - len - 1]; 180 tot = len; 181 r |= crc_copy_check("end of buffer", dst, src, rand(), len, tot); 182 } 183 #ifdef TEST_VERBOSE 184 printf("."); 185 #endif 186 187 printf("Test done: %s\n", r ? "Fail" : "Pass"); 188 189 free(src_raw); 190 free(dst_raw); 191 192 return r; 193 } 194