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Diffstat (limited to 'test/test/test_memcpy.c')
| -rw-r--r-- | test/test/test_memcpy.c | 162 |
1 files changed, 162 insertions, 0 deletions
diff --git a/test/test/test_memcpy.c b/test/test/test_memcpy.c new file mode 100644 index 00000000..1d93dd53 --- /dev/null +++ b/test/test/test_memcpy.c @@ -0,0 +1,162 @@ +/*- + * BSD LICENSE + * + * Copyright(c) 2010-2014 Intel Corporation. All rights reserved. + * 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 <stdint.h> +#include <stdio.h> +#include <string.h> +#include <stdlib.h> + +#include <rte_common.h> +#include <rte_random.h> +#include <rte_memcpy.h> + +#include "test.h" + +/* + * Set this to the maximum buffer size you want to test. If it is 0, then the + * values in the buf_sizes[] array below will be used. + */ +#define TEST_VALUE_RANGE 0 + +/* List of buffer sizes to test */ +#if TEST_VALUE_RANGE == 0 +static size_t buf_sizes[] = { + 0, 1, 7, 8, 9, 15, 16, 17, 31, 32, 33, 63, 64, 65, 127, 128, 129, 255, + 256, 257, 320, 384, 511, 512, 513, 1023, 1024, 1025, 1518, 1522, 1600, + 2048, 3072, 4096, 5120, 6144, 7168, 8192 +}; +/* MUST be as large as largest packet size above */ +#define SMALL_BUFFER_SIZE 8192 +#else /* TEST_VALUE_RANGE != 0 */ +static size_t buf_sizes[TEST_VALUE_RANGE]; +#define SMALL_BUFFER_SIZE TEST_VALUE_RANGE +#endif /* TEST_VALUE_RANGE == 0 */ + +/* Data is aligned on this many bytes (power of 2) */ +#define ALIGNMENT_UNIT 32 + + +/* + * Create two buffers, and initialise one with random values. These are copied + * to the second buffer and then compared to see if the copy was successful. + * The bytes outside the copied area are also checked to make sure they were not + * changed. + */ +static int +test_single_memcpy(unsigned int off_src, unsigned int off_dst, size_t size) +{ + unsigned int i; + uint8_t dest[SMALL_BUFFER_SIZE + ALIGNMENT_UNIT]; + uint8_t src[SMALL_BUFFER_SIZE + ALIGNMENT_UNIT]; + void * ret; + + /* Setup buffers */ + for (i = 0; i < SMALL_BUFFER_SIZE + ALIGNMENT_UNIT; i++) { + dest[i] = 0; + src[i] = (uint8_t) rte_rand(); + } + + /* Do the copy */ + ret = rte_memcpy(dest + off_dst, src + off_src, size); + if (ret != (dest + off_dst)) { + printf("rte_memcpy() returned %p, not %p\n", + ret, dest + off_dst); + } + + /* Check nothing before offset is affected */ + for (i = 0; i < off_dst; i++) { + if (dest[i] != 0) { + printf("rte_memcpy() failed for %u bytes (offsets=%u,%u): " + "[modified before start of dst].\n", + (unsigned)size, off_src, off_dst); + return -1; + } + } + + /* Check everything was copied */ + for (i = 0; i < size; i++) { + if (dest[i + off_dst] != src[i + off_src]) { + printf("rte_memcpy() failed for %u bytes (offsets=%u,%u): " + "[didn't copy byte %u].\n", + (unsigned)size, off_src, off_dst, i); + return -1; + } + } + + /* Check nothing after copy was affected */ + for (i = size; i < SMALL_BUFFER_SIZE; i++) { + if (dest[i + off_dst] != 0) { + printf("rte_memcpy() failed for %u bytes (offsets=%u,%u): " + "[copied too many].\n", + (unsigned)size, off_src, off_dst); + return -1; + } + } + return 0; +} + +/* + * Check functionality for various buffer sizes and data offsets/alignments. + */ +static int +func_test(void) +{ + unsigned int off_src, off_dst, i; + unsigned int num_buf_sizes = sizeof(buf_sizes) / sizeof(buf_sizes[0]); + int ret; + + for (off_src = 0; off_src < ALIGNMENT_UNIT; off_src++) { + for (off_dst = 0; off_dst < ALIGNMENT_UNIT; off_dst++) { + for (i = 0; i < num_buf_sizes; i++) { + ret = test_single_memcpy(off_src, off_dst, + buf_sizes[i]); + if (ret != 0) + return -1; + } + } + } + return 0; +} + +static int +test_memcpy(void) +{ + int ret; + + ret = func_test(); + if (ret != 0) + return -1; + return 0; +} + +REGISTER_TEST_COMMAND(memcpy_autotest, test_memcpy); |