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); 163