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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. **********************************************************************/ #include #include #include #include #include #include "crc.h" #include "crc_ref.h" #include "test.h" #ifndef RANDOMS # define RANDOMS 20 #endif #ifndef TEST_SEED # define TEST_SEED 0x1234 #endif #define MAX_BUF 2345 #define TEST_SIZE 217 #define TEST_LEN (8 * 1024) typedef uint16_t u16; typedef uint8_t u8; // bitwise crc version uint16_t crc16_t10dif_copy_ref(uint16_t seed, uint8_t * dst, uint8_t * src, uint64_t len); void rand_buffer(unsigned char *buf, long buffer_size) { long i; for (i = 0; i < buffer_size; i++) buf[i] = rand(); } int memtst(unsigned char *buf, unsigned char c, int len) { int i; for (i = 0; i < len; i++) if (*buf++ != c) return 1; return 0; } int crc_copy_check(const char *description, u8 * dst, u8 * src, u8 dst_fill_val, int len, int tot) { u16 seed; int rem; assert(tot >= len); seed = rand(); rem = tot - len; memset(dst, dst_fill_val, tot); // multi-binary crc version u16 crc_dut = crc16_t10dif_copy(seed, dst, src, len); u16 crc_ref = crc16_t10dif(seed, src, len); if (crc_dut != crc_ref) { printf("%s, crc gen fail: 0x%4x 0x%4x len=%d\n", description, crc_dut, crc_ref, len); return 1; } else if (memcmp(dst, src, len)) { printf("%s, copy fail: len=%d\n", description, len); return 1; } else if (memtst(&dst[len], dst_fill_val, rem)) { printf("%s, writeover fail: len=%d\n", description, len); return 1; } // bitwise crc version crc_dut = crc16_t10dif_copy_ref(seed, dst, src, len); crc_ref = crc16_t10dif_ref(seed, src, len); if (crc_dut != crc_ref) { printf("%s, crc gen fail (table-driven): 0x%4x 0x%4x len=%d\n", description, crc_dut, crc_ref, len); return 1; } else if (memcmp(dst, src, len)) { printf("%s, copy fail (table driven): len=%d\n", description, len); return 1; } else if (memtst(&dst[len], dst_fill_val, rem)) { printf("%s, writeover fail (table driven): len=%d\n", description, len); return 1; } return 0; } int main(int argc, char *argv[]) { int r = 0; int i; int len, tot; u8 *src_raw = NULL, *dst_raw = NULL; u8 *src, *dst; printf("Test crc16_t10dif_copy_test:\n"); src_raw = (u8 *) malloc(TEST_LEN); if (NULL == src_raw) { printf("alloc error: Fail"); return -1; } dst_raw = (u8 *) malloc(TEST_LEN); if (NULL == dst_raw) { printf("alloc error: Fail"); aligned_free(src_raw); return -1; } src = src_raw; dst = dst_raw; srand(TEST_SEED); // Test of all zeros memset(src, 0, TEST_LEN); r |= crc_copy_check("zero tst", dst, src, 0x5e, MAX_BUF, TEST_LEN); // Another simple test pattern memset(src, 0xff, TEST_LEN); r |= crc_copy_check("simp tst", dst, src, 0x5e, MAX_BUF, TEST_LEN); // Do a few short len random data tests rand_buffer(src, TEST_LEN); rand_buffer(dst, TEST_LEN); for (i = 0; i < MAX_BUF; i++) { r |= crc_copy_check("short len", dst, src, rand(), i, MAX_BUF); } #ifdef TEST_VERBOSE printf("."); #endif // Do a few longer tests, random data for (i = TEST_LEN; i >= (TEST_LEN - TEST_SIZE); i--) { r |= crc_copy_check("long len", dst, src, rand(), i, TEST_LEN); } #ifdef TEST_VERBOSE printf("."); #endif // Do random size, random data for (i = 0; i < RANDOMS; i++) { len = rand() % TEST_LEN; r |= crc_copy_check("rand len", dst, src, rand(), len, TEST_LEN); } #ifdef TEST_VERBOSE printf("."); #endif // Run tests at end of buffer for (i = 0; i < RANDOMS; i++) { len = rand() % TEST_LEN; src = &src_raw[TEST_LEN - len - 1]; dst = &dst_raw[TEST_LEN - len - 1]; tot = len; r |= crc_copy_check("end of buffer", dst, src, rand(), len, tot); } #ifdef TEST_VERBOSE printf("."); #endif printf("Test done: %s\n", r ? "Fail" : "Pass"); free(src_raw); free(dst_raw); return r; }