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1 | /*- |
2 | * BSD LICENSE | |
3 | * | |
4 | * Copyright(c) 2010-2014 Intel Corporation. All rights reserved. | |
5 | * All rights reserved. | |
6 | * | |
7 | * Redistribution and use in source and binary forms, with or without | |
8 | * modification, are permitted provided that the following conditions | |
9 | * are met: | |
10 | * | |
11 | * * Redistributions of source code must retain the above copyright | |
12 | * notice, this list of conditions and the following disclaimer. | |
13 | * * Redistributions in binary form must reproduce the above copyright | |
14 | * notice, this list of conditions and the following disclaimer in | |
15 | * the documentation and/or other materials provided with the | |
16 | * distribution. | |
17 | * * Neither the name of Intel Corporation nor the names of its | |
18 | * contributors may be used to endorse or promote products derived | |
19 | * from this software without specific prior written permission. | |
20 | * | |
21 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
22 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
23 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
24 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
25 | * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
26 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
27 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
28 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
29 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
30 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
31 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
32 | */ | |
33 | ||
34 | #include <stdint.h> | |
35 | #include <stdio.h> | |
36 | #include <string.h> | |
37 | #include <stdlib.h> | |
38 | ||
39 | #include <rte_common.h> | |
40 | #include <rte_random.h> | |
41 | #include <rte_memcpy.h> | |
42 | ||
43 | #include "test.h" | |
44 | ||
45 | /* | |
46 | * Set this to the maximum buffer size you want to test. If it is 0, then the | |
47 | * values in the buf_sizes[] array below will be used. | |
48 | */ | |
49 | #define TEST_VALUE_RANGE 0 | |
50 | ||
51 | /* List of buffer sizes to test */ | |
52 | #if TEST_VALUE_RANGE == 0 | |
53 | static size_t buf_sizes[] = { | |
54 | 0, 1, 7, 8, 9, 15, 16, 17, 31, 32, 33, 63, 64, 65, 127, 128, 129, 255, | |
55 | 256, 257, 320, 384, 511, 512, 513, 1023, 1024, 1025, 1518, 1522, 1600, | |
56 | 2048, 3072, 4096, 5120, 6144, 7168, 8192 | |
57 | }; | |
58 | /* MUST be as large as largest packet size above */ | |
59 | #define SMALL_BUFFER_SIZE 8192 | |
60 | #else /* TEST_VALUE_RANGE != 0 */ | |
61 | static size_t buf_sizes[TEST_VALUE_RANGE]; | |
62 | #define SMALL_BUFFER_SIZE TEST_VALUE_RANGE | |
63 | #endif /* TEST_VALUE_RANGE == 0 */ | |
64 | ||
65 | /* Data is aligned on this many bytes (power of 2) */ | |
66 | #define ALIGNMENT_UNIT 32 | |
67 | ||
68 | ||
69 | /* | |
70 | * Create two buffers, and initialise one with random values. These are copied | |
71 | * to the second buffer and then compared to see if the copy was successful. | |
72 | * The bytes outside the copied area are also checked to make sure they were not | |
73 | * changed. | |
74 | */ | |
75 | static int | |
76 | test_single_memcpy(unsigned int off_src, unsigned int off_dst, size_t size) | |
77 | { | |
78 | unsigned int i; | |
79 | uint8_t dest[SMALL_BUFFER_SIZE + ALIGNMENT_UNIT]; | |
80 | uint8_t src[SMALL_BUFFER_SIZE + ALIGNMENT_UNIT]; | |
81 | void * ret; | |
82 | ||
83 | /* Setup buffers */ | |
84 | for (i = 0; i < SMALL_BUFFER_SIZE + ALIGNMENT_UNIT; i++) { | |
85 | dest[i] = 0; | |
86 | src[i] = (uint8_t) rte_rand(); | |
87 | } | |
88 | ||
89 | /* Do the copy */ | |
90 | ret = rte_memcpy(dest + off_dst, src + off_src, size); | |
91 | if (ret != (dest + off_dst)) { | |
92 | printf("rte_memcpy() returned %p, not %p\n", | |
93 | ret, dest + off_dst); | |
94 | } | |
95 | ||
96 | /* Check nothing before offset is affected */ | |
97 | for (i = 0; i < off_dst; i++) { | |
98 | if (dest[i] != 0) { | |
99 | printf("rte_memcpy() failed for %u bytes (offsets=%u,%u): " | |
100 | "[modified before start of dst].\n", | |
101 | (unsigned)size, off_src, off_dst); | |
102 | return -1; | |
103 | } | |
104 | } | |
105 | ||
106 | /* Check everything was copied */ | |
107 | for (i = 0; i < size; i++) { | |
108 | if (dest[i + off_dst] != src[i + off_src]) { | |
109 | printf("rte_memcpy() failed for %u bytes (offsets=%u,%u): " | |
110 | "[didn't copy byte %u].\n", | |
111 | (unsigned)size, off_src, off_dst, i); | |
112 | return -1; | |
113 | } | |
114 | } | |
115 | ||
116 | /* Check nothing after copy was affected */ | |
117 | for (i = size; i < SMALL_BUFFER_SIZE; i++) { | |
118 | if (dest[i + off_dst] != 0) { | |
119 | printf("rte_memcpy() failed for %u bytes (offsets=%u,%u): " | |
120 | "[copied too many].\n", | |
121 | (unsigned)size, off_src, off_dst); | |
122 | return -1; | |
123 | } | |
124 | } | |
125 | return 0; | |
126 | } | |
127 | ||
128 | /* | |
129 | * Check functionality for various buffer sizes and data offsets/alignments. | |
130 | */ | |
131 | static int | |
132 | func_test(void) | |
133 | { | |
134 | unsigned int off_src, off_dst, i; | |
135 | unsigned int num_buf_sizes = sizeof(buf_sizes) / sizeof(buf_sizes[0]); | |
136 | int ret; | |
137 | ||
138 | for (off_src = 0; off_src < ALIGNMENT_UNIT; off_src++) { | |
139 | for (off_dst = 0; off_dst < ALIGNMENT_UNIT; off_dst++) { | |
140 | for (i = 0; i < num_buf_sizes; i++) { | |
141 | ret = test_single_memcpy(off_src, off_dst, | |
142 | buf_sizes[i]); | |
143 | if (ret != 0) | |
144 | return -1; | |
145 | } | |
146 | } | |
147 | } | |
148 | return 0; | |
149 | } | |
150 | ||
151 | static int | |
152 | test_memcpy(void) | |
153 | { | |
154 | int ret; | |
155 | ||
156 | ret = func_test(); | |
157 | if (ret != 0) | |
158 | return -1; | |
159 | return 0; | |
160 | } | |
161 | ||
162 | REGISTER_TEST_COMMAND(memcpy_autotest, test_memcpy); |