1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
|
/*-
* 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;
}
static struct test_command memcpy_cmd = {
.command = "memcpy_autotest",
.callback = test_memcpy,
};
REGISTER_TEST_COMMAND(memcpy_cmd);
|
