1 files changed, 324 insertions, 0 deletions
diff --git a/src/isa-l/crc/crc32_funcs_test.c b/src/isa-l/crc/crc32_funcs_test.c
new file mode 100644
index 000000000..e28da4018
--- /dev/null
+++ b/src/isa-l/crc/crc32_funcs_test.c
@@ -0,0 +1,324 @@
+/**********************************************************************
+  Copyright(c) 2011-2018 Intel Corporation All rights reserved.
+
+  Redistribution and use in source and binary forms, with or without
+  modification, are permitted provided that the following conditions
+  are met:
+    * Redistributions of source code must retain the above copyright
+      notice, this list of conditions and the following disclaimer.
+    * Redistributions in binary form must reproduce the above copyright
+      notice, this list of conditions and the following disclaimer in
+      the documentation and/or other materials provided with the
+      distribution.
+    * Neither the name of Intel Corporation nor the names of its
+      contributors may be used to endorse or promote products derived
+      from this software without specific prior written permission.
+
+  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 <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdint.h>
+#include "crc.h"
+#include "types.h"
+#include "crc_ref.h"
+
+#ifndef TEST_SEED
+# define TEST_SEED 0x1234
+#endif
+
+#define MAX_BUF   4096
+#define TEST_SIZE  32
+
+typedef uint32_t(*crc32_func_t) (uint32_t, const uint8_t *, uint64_t);
+typedef uint32_t(*crc32_func_t_base) (uint32_t, uint8_t *, uint64_t);
+typedef uint32_t(*crc32_func_t_ref) (uint32_t, uint8_t *, uint64_t);
+
+typedef struct func_case {
+	char *note;
+	crc32_func_t crc32_func_call;
+	crc32_func_t_base crc32_base_call;
+	crc32_func_t_ref crc32_ref_call;
+} func_case_t;
+
+uint32_t crc32_iscsi_wrap(uint32_t seed, const uint8_t * buf, uint64_t len)
+{
+	return crc32_iscsi((uint8_t *) buf, len, seed);
+}
+
+uint32_t crc32_iscsi_base_wrap(uint32_t seed, uint8_t * buf, uint64_t len)
+{
+	return crc32_iscsi_base(buf, len, seed);
+}
+
+uint32_t crc32_iscsi_ref_wrap(uint32_t seed, uint8_t * buf, uint64_t len)
+{
+	return crc32_iscsi_ref(buf, len, seed);
+}
+
+func_case_t test_funcs[] = {
+	{"crc32_ieee", crc32_ieee, crc32_ieee_base, crc32_ieee_ref}
+	,
+	{"crc32_gzip_refl", crc32_gzip_refl, crc32_gzip_refl_base, crc32_gzip_refl_ref}
+	,
+	{"crc32_iscsi", crc32_iscsi_wrap, crc32_iscsi_base_wrap, crc32_iscsi_ref_wrap}
+};
+
+// Generates pseudo-random data
+
+void rand_buffer(unsigned char *buf, long buffer_size)
+{
+	long i;
+	for (i = 0; i < buffer_size; i++)
+		buf[i] = rand();
+}
+
+// Test cases
+int zeros_test(func_case_t * test_func);
+
+int simple_pattern_test(func_case_t * test_func);
+
+int seeds_sizes_test(func_case_t * test_func);
+
+int eob_test(func_case_t * test_func);
+
+int update_test(func_case_t * test_func);
+
+int verbose = 0;
+void *buf_alloc = NULL;
+
+int main(int argc, char *argv[])
+{
+	int fail = 0, fail_case;
+	int i, ret;
+	func_case_t *test_func;
+
+	verbose = argc - 1;
+
+	// Align to TEST_SIZE boundary
+	ret = posix_memalign(&buf_alloc, TEST_SIZE, MAX_BUF * TEST_SIZE);
+	if (ret) {
+		printf("alloc error: Fail");
+		return -1;
+	}
+	srand(TEST_SEED);
+	printf("CRC32 Tests\n");
+
+	for (i = 0; i < sizeof(test_funcs) / sizeof(test_funcs[0]); i++) {
+		fail_case = 0;
+		test_func = &test_funcs[i];
+
+		printf("Test %s\t", test_func->note);
+		fail_case += zeros_test(test_func);
+		fail_case += simple_pattern_test(test_func);
+		fail_case += seeds_sizes_test(test_func);
+		fail_case += eob_test(test_func);
+		fail_case += update_test(test_func);
+		printf(" done: %s\n", fail_case ? "Fail" : "Pass");
+
+		if (fail_case) {
+			printf("\n%s Failed %d tests\n", test_func->note, fail_case);
+			fail++;
+		}
+	}
+
+	printf("CRC32 Tests all done: %s\n", fail ? "Fail" : "Pass");
+
+	return fail;
+}
+
+// Test of all zeros
+int zeros_test(func_case_t * test_func)
+{
+	uint32_t crc_ref, crc_base, crc;
+	int fail = 0;
+	unsigned char *buf = NULL;
+
+	buf = (unsigned char *)buf_alloc;
+	memset(buf, 0, MAX_BUF * 10);
+	crc_ref = test_func->crc32_ref_call(TEST_SEED, buf, MAX_BUF * 10);
+	crc_base = test_func->crc32_base_call(TEST_SEED, buf, MAX_BUF * 10);
+	crc = test_func->crc32_func_call(TEST_SEED, buf, MAX_BUF * 10);
+
+	if ((crc_base != crc_ref) || (crc != crc_ref)) {
+		fail++;
+		printf("\n		   opt   ref\n");
+		printf("		 ------ ------\n");
+		printf("crc	zero = 0x%8x 0x%8x 0x%8x\n", crc_ref, crc_base, crc);
+	} else
+		printf(".");
+
+	return fail;
+}
+
+// Another simple test pattern
+int simple_pattern_test(func_case_t * test_func)
+{
+	uint32_t crc_ref, crc_base, crc;
+	int fail = 0;
+	unsigned char *buf = NULL;
+
+	buf = (unsigned char *)buf_alloc;
+	memset(buf, 0x8a, MAX_BUF);
+	crc_ref = test_func->crc32_ref_call(TEST_SEED, buf, MAX_BUF);
+	crc_base = test_func->crc32_base_call(TEST_SEED, buf, MAX_BUF);
+	crc = test_func->crc32_func_call(TEST_SEED, buf, MAX_BUF);
+
+	if ((crc_base != crc_ref) || (crc != crc_ref))
+		fail++;
+	if (verbose)
+		printf("crc  all 8a = 0x%8x 0x%8x 0x%8x\n", crc_ref, crc_base, crc);
+	else
+		printf(".");
+
+	return fail;
+}
+
+int seeds_sizes_test(func_case_t * test_func)
+{
+	uint32_t crc_ref, crc_base, crc;
+	int fail = 0;
+	int i;
+	uint64_t r, s;
+	unsigned char *buf = NULL;
+
+	// Do a few random tests
+	buf = (unsigned char *)buf_alloc;	//reset buf
+	r = rand();
+	rand_buffer(buf, MAX_BUF * TEST_SIZE);
+
+	for (i = 0; i < TEST_SIZE; i++) {
+		crc_ref = test_func->crc32_ref_call(r, buf, MAX_BUF);
+		crc_base = test_func->crc32_base_call(r, buf, MAX_BUF);
+		crc = test_func->crc32_func_call(r, buf, MAX_BUF);
+
+		if ((crc_base != crc_ref) || (crc != crc_ref))
+			fail++;
+		if (verbose)
+			printf("crc rand%3d = 0x%8x 0x%8x 0x%8x\n", i, crc_ref, crc_base, crc);
+		else if (i % (TEST_SIZE / 8) == 0)
+			printf(".");
+		buf += MAX_BUF;
+	}
+
+	// Do a few random sizes
+	buf = (unsigned char *)buf_alloc;	//reset buf
+	r = rand();
+
+	for (i = MAX_BUF; i >= 0; i--) {
+		crc_ref = test_func->crc32_ref_call(r, buf, i);
+		crc_base = test_func->crc32_base_call(r, buf, i);
+		crc = test_func->crc32_func_call(r, buf, i);
+
+		if ((crc_base != crc_ref) || (crc != crc_ref)) {
+			fail++;
+			printf("fail random size%i 0x%8x 0x%8x 0x%8x\n", i, crc_ref, crc_base,
+			       crc);
+		} else if (i % (MAX_BUF / 8) == 0)
+			printf(".");
+	}
+
+	// Try different seeds
+	for (s = 0; s < 20; s++) {
+		buf = (unsigned char *)buf_alloc;	//reset buf
+
+		r = rand();	// just to get a new seed
+		rand_buffer(buf, MAX_BUF * TEST_SIZE);	// new pseudo-rand data
+
+		if (verbose)
+			printf("seed = 0x%lx\n", r);
+
+		for (i = 0; i < TEST_SIZE; i++) {
+			crc_ref = test_func->crc32_ref_call(r, buf, MAX_BUF);
+			crc_base = test_func->crc32_base_call(r, buf, MAX_BUF);
+			crc = test_func->crc32_func_call(r, buf, MAX_BUF);
+
+			if ((crc_base != crc_ref) || (crc != crc_ref))
+				fail++;
+			if (verbose)
+				printf("crc rand%3d = 0x%8x 0x%8x 0x%8x\n", i, crc_ref,
+				       crc_base, crc);
+			else if (i % (TEST_SIZE * 20 / 8) == 0)
+				printf(".");
+			buf += MAX_BUF;
+		}
+	}
+
+	return fail;
+}
+
+// Run tests at end of buffer
+int eob_test(func_case_t * test_func)
+{
+	uint32_t crc_ref, crc_base, crc;
+	int fail = 0;
+	int i;
+	unsigned char *buf = NULL;
+
+	// Null test
+	if (0 != test_func->crc32_func_call(0, NULL, 0)) {
+		fail++;
+		printf("crc null test fail\n");
+	}
+
+	buf = (unsigned char *)buf_alloc;	//reset buf
+	buf = buf + ((MAX_BUF - 1) * TEST_SIZE);	//Line up TEST_SIZE from end
+	for (i = 0; i <= TEST_SIZE; i++) {
+		crc_ref = test_func->crc32_ref_call(TEST_SEED, buf + i, TEST_SIZE - i);
+		crc_base = test_func->crc32_base_call(TEST_SEED, buf + i, TEST_SIZE - i);
+		crc = test_func->crc32_func_call(TEST_SEED, buf + i, TEST_SIZE - i);
+
+		if ((crc_base != crc_ref) || (crc != crc_ref))
+			fail++;
+		if (verbose)
+			printf("crc eob rand%3d = 0x%8x 0x%8x 0x%8x\n", i, crc_ref, crc_base,
+			       crc);
+		else if (i % (TEST_SIZE / 8) == 0)
+			printf(".");
+	}
+
+	return fail;
+}
+
+int update_test(func_case_t * test_func)
+{
+	uint32_t crc_ref, crc_base, crc;
+	int fail = 0;
+	int i;
+	uint64_t r;
+	unsigned char *buf = NULL;
+
+	buf = (unsigned char *)buf_alloc;	//reset buf
+	r = rand();
+	// Process the whole buf with reference func single call.
+	crc_ref = test_func->crc32_ref_call(r, buf, MAX_BUF * TEST_SIZE);
+	crc_base = test_func->crc32_base_call(r, buf, MAX_BUF * TEST_SIZE);
+	// Process buf with update method.
+	for (i = 0; i < TEST_SIZE; i++) {
+		crc = test_func->crc32_func_call(r, buf, MAX_BUF);
+		// Update crc seeds and buf pointer.
+		r = crc;
+		buf += MAX_BUF;
+	}
+
+	if ((crc_base != crc_ref) || (crc != crc_ref))
+		fail++;
+	if (verbose)
+		printf("crc rand%3d = 0x%8x 0x%8x 0x%8x\n", i, crc_ref, crc_base, crc);
+	else
+		printf(".");
+
+	return fail;
+}