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 38 #ifndef RANDOMS 39 # define RANDOMS 20 40 #endif 41 #ifndef TEST_SEED 42 # define TEST_SEED 0x1234 43 #endif 44 45 #define MAX_BUF 2345 46 #define TEST_SIZE 217 47 #define TEST_LEN (8 * 1024) 48 49 typedef uint16_t u16; 50 typedef uint8_t u8; 51 52 // bitwise crc version 53 uint16_t crc16_t10dif_copy_ref(uint16_t seed, uint8_t * dst, uint8_t * src, uint64_t len); 54 55 void rand_buffer(unsigned char *buf, long buffer_size) 56 { 57 long i; 58 for (i = 0; i < buffer_size; i++) 59 buf[i] = rand(); 60 } 61 62 int memtst(unsigned char *buf, unsigned char c, int len) 63 { 64 int i; 65 for (i = 0; i < len; i++) 66 if (*buf++ != c) 67 return 1; 68 69 return 0; 70 } 71 72 int crc_copy_check(const char *description, u8 * dst, u8 * src, u8 dst_fill_val, int len, 73 int tot) 74 { 75 u16 seed; 76 int rem; 77 78 assert(tot >= len); 79 seed = rand(); 80 rem = tot - len; 81 memset(dst, dst_fill_val, tot); 82 83 // multi-binary crc version 84 u16 crc_dut = crc16_t10dif_copy(seed, dst, src, len); 85 u16 crc_ref = crc16_t10dif(seed, src, len); 86 if (crc_dut != crc_ref) { 87 printf("%s, crc gen fail: 0x%4x 0x%4x len=%d\n", description, crc_dut, 88 crc_ref, len); 89 return 1; 90 } else if (memcmp(dst, src, len)) { 91 printf("%s, copy fail: len=%d\n", description, len); 92 return 1; 93 } else if (memtst(&dst[len], dst_fill_val, rem)) { 94 printf("%s, writeover fail: len=%d\n", description, len); 95 return 1; 96 } 97 // bitwise crc version 98 crc_dut = crc16_t10dif_copy_ref(seed, dst, src, len); 99 crc_ref = crc16_t10dif_ref(seed, src, len); 100 if (crc_dut != crc_ref) { 101 printf("%s, crc gen fail (table-driven): 0x%4x 0x%4x len=%d\n", description, 102 crc_dut, crc_ref, len); 103 return 1; 104 } else if (memcmp(dst, src, len)) { 105 printf("%s, copy fail (table driven): len=%d\n", description, len); 106 return 1; 107 } else if (memtst(&dst[len], dst_fill_val, rem)) { 108 printf("%s, writeover fail (table driven): len=%d\n", description, len); 109 return 1; 110 } 111 return 0; 112 } 113 114 int main(int argc, char *argv[]) 115 { 116 int r = 0; 117 int i; 118 int len, tot; 119 u8 *src_raw, *dst_raw; 120 u8 *src, *dst; 121 122 printf("Test crc16_t10dif_copy_test:\n"); 123 src_raw = (u8 *) malloc(TEST_LEN); 124 dst_raw = (u8 *) malloc(TEST_LEN); 125 if (NULL == src_raw || NULL == dst_raw) { 126 printf("alloc error: Fail"); 127 return -1; 128 } 129 src = src_raw; 130 dst = dst_raw; 131 132 srand(TEST_SEED); 133 134 // Test of all zeros 135 memset(src, 0, TEST_LEN); 136 r |= crc_copy_check("zero tst", dst, src, 0x5e, MAX_BUF, TEST_LEN); 137 138 // Another simple test pattern 139 memset(src, 0xff, TEST_LEN); 140 r |= crc_copy_check("simp tst", dst, src, 0x5e, MAX_BUF, TEST_LEN); 141 142 // Do a few short len random data tests 143 rand_buffer(src, TEST_LEN); 144 rand_buffer(dst, TEST_LEN); 145 for (i = 0; i < MAX_BUF; i++) { 146 r |= crc_copy_check("short len", dst, src, rand(), i, MAX_BUF); 147 } 148 #ifdef TEST_VERBOSE 149 printf("."); 150 #endif 151 152 // Do a few longer tests, random data 153 for (i = TEST_LEN; i >= (TEST_LEN - TEST_SIZE); i--) { 154 r |= crc_copy_check("long len", dst, src, rand(), i, TEST_LEN); 155 } 156 #ifdef TEST_VERBOSE 157 printf("."); 158 #endif 159 160 // Do random size, random data 161 for (i = 0; i < RANDOMS; i++) { 162 len = rand() % TEST_LEN; 163 r |= crc_copy_check("rand len", dst, src, rand(), len, TEST_LEN); 164 } 165 #ifdef TEST_VERBOSE 166 printf("."); 167 #endif 168 169 // Run tests at end of buffer 170 for (i = 0; i < RANDOMS; i++) { 171 len = rand() % TEST_LEN; 172 src = &src_raw[TEST_LEN - len - 1]; 173 dst = &dst_raw[TEST_LEN - len - 1]; 174 tot = len; 175 r |= crc_copy_check("end of buffer", dst, src, rand(), len, tot); 176 } 177 #ifdef TEST_VERBOSE 178 printf("."); 179 #endif 180 181 printf("Test done: %s\n", r ? "Fail" : "Pass"); 182 return r; 183 } 184