ceph/src/spdk/isa-l/crc/crc16_t10dif_test.c

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  29
  30 #include <stdio.h>
  31 #include <string.h>
  32 #include <stdint.h>
  33 #include <stdlib.h>
  34 #include "crc.h"
  35 #include "types.h"
  36 #include "crc_ref.h"
  37
  38 #ifndef TEST_SEED
  39 # define TEST_SEED 0x1234
  40 #endif
  41
  42 #define MAX_BUF   4096
  43 #define TEST_SIZE  20
  44
  45 typedef uint32_t u32;
  46 typedef uint16_t u16;
  47 typedef uint8_t u8;
  48
  49 uint16_t crc16_t10dif_ref(uint16_t seed, uint8_t * buf, uint64_t len);
  50
  51 void rand_buffer(unsigned char *buf, long buffer_size)
  52 {
  53         long i;
  54         for (i = 0; i < buffer_size; i++)
  55                 buf[i] = rand();
  56 }
  57
  58 int main(int argc, char *argv[])
  59 {
  60         int fail = 0;
  61         u32 r = 0;
  62         int verbose = argc - 1;
  63         int i, s;
  64         void *buf_raw;
  65         unsigned char *buf;
  66
  67         printf("Test crc16_t10dif_test ");
  68         if (posix_memalign(&buf_raw, 32, MAX_BUF * TEST_SIZE)) {
  69                 printf("alloc error: Fail");
  70                 return -1;
  71         }
  72         buf = (unsigned char *)buf_raw;
  73
  74         srand(TEST_SEED);
  75
  76         // Test of all zeros
  77         memset(buf, 0, MAX_BUF * 10);
  78         u16 crc_ref = crc16_t10dif_ref(TEST_SEED, buf, MAX_BUF);
  79         u16 crc_base = crc16_t10dif_base(TEST_SEED, buf, MAX_BUF);
  80         u16 crc = crc16_t10dif(TEST_SEED, buf, MAX_BUF);
  81         if ((crc_base != crc_ref) || (crc != crc_ref)) {
  82                 fail++;
  83                 printf("\n           opt   ref\n");
  84                 printf("         ------ ------\n");
  85                 printf("crc    zero = 0x%4x 0x%4x 0x%4x \n", crc_ref, crc_base, crc);
  86         } else
  87                 printf(".");
  88
  89         // Another simple test pattern
  90         memset(buf, 0x8a, MAX_BUF);
  91         crc_ref = crc16_t10dif_ref(TEST_SEED, buf, MAX_BUF);
  92         crc_base = crc16_t10dif_base(TEST_SEED, buf, MAX_BUF);
  93         crc = crc16_t10dif(TEST_SEED, buf, MAX_BUF);
  94         if ((crc_base != crc_ref) || (crc != crc_ref)) {
  95                 fail++;
  96                 printf("crc  all 8a = 0x%4x 0x%4x 0x%4x\n", crc_ref, crc_base, crc);
  97         } else
  98                 printf(".");
  99
 100         // Do a few random tests
 101
 102         rand_buffer(buf, MAX_BUF * TEST_SIZE);
 103
 104         for (i = 0; i < TEST_SIZE; i++) {
 105                 crc_ref = crc16_t10dif_ref(TEST_SEED, buf, MAX_BUF);
 106                 crc_base = crc16_t10dif_base(TEST_SEED, buf, MAX_BUF);
 107                 crc = crc16_t10dif(TEST_SEED, buf, MAX_BUF);
 108                 if ((crc_base != crc_ref) || (crc != crc_ref))
 109                         fail++;
 110                 if (verbose)
 111                         printf("crc rand%3d = 0x%4x 0x%4x 0x%4x\n", i, crc_ref, crc_base, crc);
 112                 else if (i % (TEST_SIZE / 8) == 0)
 113                         printf(".");
 114                 buf += MAX_BUF;
 115         }
 116
 117         // Do a few random sizes
 118         buf = (unsigned char *)buf_raw; //reset buf
 119         r = rand();
 120
 121         for (i = MAX_BUF; i >= 0; i--) {
 122                 crc_ref = crc16_t10dif_ref(r, buf, i);
 123                 crc_base = crc16_t10dif_base(r, buf, i);
 124                 crc = crc16_t10dif(r, buf, i);
 125                 if ((crc_base != crc_ref) || (crc != crc_ref)) {
 126                         fail++;
 127                         printf("fail random size%i 0x%8x 0x%8x 0x%8x\n", i, crc_ref, crc_base,
 128                                crc);
 129                 } else if (i % (MAX_BUF / 8) == 0)
 130                         printf(".");
 131         }
 132
 133         // Try different seeds
 134         for (s = 0; s < 20; s++) {
 135                 buf = (unsigned char *)buf_raw; //reset buf
 136
 137                 r = rand();     // just to get a new seed
 138                 rand_buffer(buf, MAX_BUF * TEST_SIZE);  // new pseudo-rand data
 139
 140                 if (verbose)
 141                         printf("seed = 0x%x\n", r);
 142
 143                 for (i = 0; i < TEST_SIZE; i++) {
 144                         crc_ref = crc16_t10dif_ref(r, buf, MAX_BUF);
 145                         crc_base = crc16_t10dif_base(r, buf, MAX_BUF);
 146                         crc = crc16_t10dif(r, buf, MAX_BUF);
 147                         if ((crc_base != crc_ref) || (crc != crc_ref))
 148                                 fail++;
 149                         if (verbose)
 150                                 printf("crc rand%3d = 0x%4x 0x%4x 0x%4x\n", i, crc_ref,
 151                                        crc_base, crc);
 152                         else if (i % (TEST_SIZE * 20 / 8) == 0)
 153                                 printf(".");
 154                         buf += MAX_BUF;
 155                 }
 156         }
 157
 158         // Run tests at end of buffer
 159         buf = (unsigned char *)buf_raw; //reset buf
 160         buf = buf + ((MAX_BUF - 1) * TEST_SIZE);        //Line up TEST_SIZE from end
 161         for (i = 0; i < TEST_SIZE; i++) {
 162                 crc_ref = crc16_t10dif_ref(TEST_SEED, buf + i, TEST_SIZE - i);
 163                 crc_base = crc16_t10dif_base(TEST_SEED, buf + i, TEST_SIZE - i);
 164                 crc = crc16_t10dif(TEST_SEED, buf + i, TEST_SIZE - i);
 165                 if ((crc_base != crc_ref) || (crc != crc_ref))
 166                         fail++;
 167                 if (verbose)
 168                         printf("crc eob rand%3d = 0x%4x 0x%4x 0x%4x\n", i, crc_ref, crc_base,
 169                                crc);
 170                 else
 171                         printf(".");
 172         }
 173
 174         printf("Test done: %s\n", fail ? "Fail" : "Pass");
 175         if (fail)
 176                 printf("\nFailed %d tests\n", fail);
 177
 178         return fail;
 179 }