1 /* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright (C) 2019 Intel Corporation.
3 * All rights reserved.
4 */
5
6 #include "spdk/stdinc.h"
7
8 #include "spdk_internal/cunit.h"
9
10 #include "util/iov.c"
11
12 static int
_check_val(void * buf,size_t len,uint8_t val)13 _check_val(void *buf, size_t len, uint8_t val)
14 {
15 size_t i;
16 uint8_t *data = buf;
17
18 for (i = 0; i < len; i++) {
19 if (data[i] != val) {
20 return -1;
21 }
22 }
23
24 return 0;
25 }
26
27 static void
test_single_iov(void)28 test_single_iov(void)
29 {
30 struct iovec siov[1];
31 struct iovec diov[1];
32 uint8_t sdata[64];
33 uint8_t ddata[64];
34 ssize_t rc;
35
36 /* Simplest cases- 1 element in each iovec. */
37
38 /* Same size. */
39 memset(sdata, 1, sizeof(sdata));
40 memset(ddata, 0, sizeof(ddata));
41 siov[0].iov_base = sdata;
42 siov[0].iov_len = sizeof(sdata);
43 diov[0].iov_base = ddata;
44 diov[0].iov_len = sizeof(ddata);
45
46 rc = spdk_iovcpy(siov, 1, diov, 1);
47 CU_ASSERT(rc == sizeof(sdata));
48 CU_ASSERT(_check_val(ddata, 64, 1) == 0);
49
50 /* Source smaller than dest */
51 memset(sdata, 1, sizeof(sdata));
52 memset(ddata, 0, sizeof(ddata));
53 siov[0].iov_base = sdata;
54 siov[0].iov_len = 48;
55 diov[0].iov_base = ddata;
56 diov[0].iov_len = sizeof(ddata);
57
58 rc = spdk_iovcpy(siov, 1, diov, 1);
59 CU_ASSERT(rc == 48);
60 CU_ASSERT(_check_val(ddata, 48, 1) == 0);
61 CU_ASSERT(_check_val(&ddata[48], 16, 0) == 0);
62
63 /* Dest smaller than source */
64 memset(sdata, 1, sizeof(sdata));
65 memset(ddata, 0, sizeof(ddata));
66 siov[0].iov_base = sdata;
67 siov[0].iov_len = sizeof(sdata);
68 diov[0].iov_base = ddata;
69 diov[0].iov_len = 48;
70
71 rc = spdk_iovcpy(siov, 1, diov, 1);
72 CU_ASSERT(rc == 48);
73 CU_ASSERT(_check_val(ddata, 48, 1) == 0);
74 CU_ASSERT(_check_val(&ddata[48], 16, 0) == 0);
75 }
76
77 static void
test_simple_iov(void)78 test_simple_iov(void)
79 {
80 struct iovec siov[4];
81 struct iovec diov[4];
82 uint8_t sdata[64];
83 uint8_t ddata[64];
84 ssize_t rc;
85 int i;
86
87 /* Simple cases with 4 iov elements */
88
89 /* Same size. */
90 memset(sdata, 1, sizeof(sdata));
91 memset(ddata, 0, sizeof(ddata));
92 for (i = 0; i < 4; i++) {
93 siov[i].iov_base = sdata + (16 * i);
94 siov[i].iov_len = 16;
95 diov[i].iov_base = ddata + (16 * i);
96 diov[i].iov_len = 16;
97 }
98
99 rc = spdk_iovcpy(siov, 4, diov, 4);
100 CU_ASSERT(rc == sizeof(sdata));
101 CU_ASSERT(_check_val(ddata, 64, 1) == 0);
102
103 /* Source smaller than dest */
104 memset(sdata, 1, sizeof(sdata));
105 memset(ddata, 0, sizeof(ddata));
106 for (i = 0; i < 4; i++) {
107 siov[i].iov_base = sdata + (8 * i);
108 siov[i].iov_len = 8;
109 diov[i].iov_base = ddata + (16 * i);
110 diov[i].iov_len = 16;
111 }
112
113 rc = spdk_iovcpy(siov, 4, diov, 4);
114 CU_ASSERT(rc == 32);
115 CU_ASSERT(_check_val(ddata, 32, 1) == 0);
116 CU_ASSERT(_check_val(&ddata[32], 32, 0) == 0);
117
118 /* Dest smaller than source */
119 memset(sdata, 1, sizeof(sdata));
120 memset(ddata, 0, sizeof(ddata));
121 for (i = 0; i < 4; i++) {
122 siov[i].iov_base = sdata + (16 * i);
123 siov[i].iov_len = 16;
124 diov[i].iov_base = ddata + (8 * i);
125 diov[i].iov_len = 8;
126 }
127
128 rc = spdk_iovcpy(siov, 4, diov, 4);
129 CU_ASSERT(rc == 32);
130 CU_ASSERT(_check_val(ddata, 32, 1) == 0);
131 CU_ASSERT(_check_val(&ddata[32], 32, 0) == 0);
132 }
133
134 static void
test_complex_iov(void)135 test_complex_iov(void)
136 {
137 struct iovec siov[4];
138 struct iovec diov[4];
139 uint8_t sdata[64];
140 uint8_t ddata[64];
141 ssize_t rc;
142 int i;
143
144 /* More source elements */
145 memset(sdata, 1, sizeof(sdata));
146 memset(ddata, 0, sizeof(ddata));
147 for (i = 0; i < 4; i++) {
148 siov[i].iov_base = sdata + (16 * i);
149 siov[i].iov_len = 16;
150 }
151 diov[0].iov_base = ddata;
152 diov[0].iov_len = sizeof(ddata);
153
154 rc = spdk_iovcpy(siov, 4, diov, 1);
155 CU_ASSERT(rc == sizeof(sdata));
156 CU_ASSERT(_check_val(ddata, 64, 1) == 0);
157
158 /* More dest elements */
159 memset(sdata, 1, sizeof(sdata));
160 memset(ddata, 0, sizeof(ddata));
161 for (i = 0; i < 4; i++) {
162 diov[i].iov_base = ddata + (16 * i);
163 diov[i].iov_len = 16;
164 }
165 siov[0].iov_base = sdata;
166 siov[0].iov_len = sizeof(sdata);
167
168 rc = spdk_iovcpy(siov, 1, diov, 4);
169 CU_ASSERT(rc == sizeof(sdata));
170 CU_ASSERT(_check_val(ddata, 64, 1) == 0);
171
172 /* Build one by hand that's really terrible */
173 memset(sdata, 1, sizeof(sdata));
174 memset(ddata, 0, sizeof(ddata));
175 siov[0].iov_base = sdata;
176 siov[0].iov_len = 1;
177 siov[1].iov_base = siov[0].iov_base + siov[0].iov_len;
178 siov[1].iov_len = 13;
179 siov[2].iov_base = siov[1].iov_base + siov[1].iov_len;
180 siov[2].iov_len = 6;
181 siov[3].iov_base = siov[2].iov_base + siov[2].iov_len;
182 siov[3].iov_len = 44;
183
184 diov[0].iov_base = ddata;
185 diov[0].iov_len = 31;
186 diov[1].iov_base = diov[0].iov_base + diov[0].iov_len;
187 diov[1].iov_len = 9;
188 diov[2].iov_base = diov[1].iov_base + diov[1].iov_len;
189 diov[2].iov_len = 1;
190 diov[3].iov_base = diov[2].iov_base + diov[2].iov_len;
191 diov[3].iov_len = 23;
192
193 rc = spdk_iovcpy(siov, 4, diov, 4);
194 CU_ASSERT(rc == 64);
195 CU_ASSERT(_check_val(ddata, 64, 1) == 0);
196 }
197
198 static void
test_iovs_to_buf(void)199 test_iovs_to_buf(void)
200 {
201 struct iovec iov[4];
202 uint8_t sdata[64];
203 uint8_t ddata[64];
204
205 memset(&sdata, 1, sizeof(sdata));
206 memset(&ddata, 6, sizeof(ddata));
207
208 iov[0].iov_base = sdata;
209 iov[0].iov_len = 3;
210 iov[1].iov_base = iov[0].iov_base + iov[0].iov_len;
211 iov[1].iov_len = 11;
212 iov[2].iov_base = iov[1].iov_base + iov[1].iov_len;
213 iov[2].iov_len = 21;
214 iov[3].iov_base = iov[2].iov_base + iov[2].iov_len;
215 iov[3].iov_len = 29;
216
217 spdk_copy_iovs_to_buf(ddata, 64, iov, 4);
218 CU_ASSERT(_check_val(ddata, 64, 1) == 0);
219 }
220
221 static void
test_buf_to_iovs(void)222 test_buf_to_iovs(void)
223 {
224 struct iovec iov[4];
225 uint8_t sdata[64];
226 uint8_t ddata[64];
227 uint8_t iov_buffer[64];
228
229 memset(&sdata, 7, sizeof(sdata));
230 memset(&ddata, 4, sizeof(ddata));
231 memset(&iov_buffer, 1, sizeof(iov_buffer));
232
233 iov[0].iov_base = iov_buffer;
234 iov[0].iov_len = 5;
235 iov[1].iov_base = iov[0].iov_base + iov[0].iov_len;
236 iov[1].iov_len = 15;
237 iov[2].iov_base = iov[1].iov_base + iov[1].iov_len;
238 iov[2].iov_len = 21;
239 iov[3].iov_base = iov[2].iov_base + iov[2].iov_len;
240 iov[3].iov_len = 23;
241
242 spdk_copy_buf_to_iovs(iov, 4, sdata, 64);
243 spdk_copy_iovs_to_buf(ddata, 64, iov, 4);
244
245 CU_ASSERT(_check_val(ddata, 64, 7) == 0);
246 }
247
248 static void
test_memset(void)249 test_memset(void)
250 {
251 struct iovec iov[4];
252 uint8_t iov_buffer[64];
253
254 memset(&iov_buffer, 1, sizeof(iov_buffer));
255
256 iov[0].iov_base = iov_buffer;
257 iov[0].iov_len = 5;
258 iov[1].iov_base = iov[0].iov_base + iov[0].iov_len;
259 iov[1].iov_len = 15;
260 iov[2].iov_base = iov[1].iov_base + iov[1].iov_len;
261 iov[2].iov_len = 21;
262 iov[3].iov_base = iov[2].iov_base + iov[2].iov_len;
263 iov[3].iov_len = 23;
264
265 spdk_iov_memset(iov, 4, 0);
266
267 CU_ASSERT(_check_val(iov_buffer, 64, 0) == 0);
268 }
269
270 static void
test_iov_one(void)271 test_iov_one(void)
272 {
273 struct iovec iov = { 0 };
274 int iovcnt;
275 char buf[4];
276
277 SPDK_IOV_ONE(&iov, &iovcnt, buf, sizeof(buf));
278
279 CU_ASSERT(iov.iov_base == buf);
280 CU_ASSERT(iov.iov_len == sizeof(buf));
281 CU_ASSERT(iovcnt == 1);
282 }
283
284 static void
test_iov_xfer(void)285 test_iov_xfer(void)
286 {
287 struct spdk_iov_xfer ix;
288 uint8_t data[64] = { 0 };
289 uint8_t iov_buffer[64];
290 struct iovec iov[4];
291 size_t i;
292
293 for (i = 0; i < sizeof(iov_buffer); i++) {
294 iov_buffer[i] = i;
295 }
296
297 iov[0].iov_base = iov_buffer;
298 iov[0].iov_len = 5;
299 iov[1].iov_base = iov[0].iov_base + iov[0].iov_len;
300 iov[1].iov_len = 15;
301 iov[2].iov_base = iov[1].iov_base + iov[1].iov_len;
302 iov[2].iov_len = 21;
303 iov[3].iov_base = iov[2].iov_base + iov[2].iov_len;
304 iov[3].iov_len = 23;
305
306 spdk_iov_xfer_init(&ix, iov, 4);
307
308 spdk_iov_xfer_to_buf(&ix, data, 8);
309 spdk_iov_xfer_to_buf(&ix, data + 8, 56);
310
311 for (i = 0; i < sizeof(data); i++) {
312 CU_ASSERT(data[i] == i);
313 }
314
315 for (i = 0; i < sizeof(data); i++) {
316 data[i] = sizeof(data) - i;
317 }
318
319 spdk_iov_xfer_init(&ix, iov, 4);
320
321 spdk_iov_xfer_from_buf(&ix, data, 5);
322 spdk_iov_xfer_from_buf(&ix, data + 5, 3);
323 spdk_iov_xfer_from_buf(&ix, data + 8, 56);
324
325 for (i = 0; i < sizeof(iov_buffer); i++) {
326 CU_ASSERT(iov_buffer[i] == sizeof(iov_buffer) - i);
327 }
328 }
329
330 int
main(int argc,char ** argv)331 main(int argc, char **argv)
332 {
333 CU_pSuite suite = NULL;
334 unsigned int num_failures;
335
336 CU_initialize_registry();
337
338 suite = CU_add_suite("iov", NULL, NULL);
339
340 CU_ADD_TEST(suite, test_single_iov);
341 CU_ADD_TEST(suite, test_simple_iov);
342 CU_ADD_TEST(suite, test_complex_iov);
343 CU_ADD_TEST(suite, test_iovs_to_buf);
344 CU_ADD_TEST(suite, test_buf_to_iovs);
345 CU_ADD_TEST(suite, test_memset);
346 CU_ADD_TEST(suite, test_iov_one);
347 CU_ADD_TEST(suite, test_iov_xfer);
348
349
350 num_failures = spdk_ut_run_tests(argc, argv, NULL);
351
352 CU_cleanup_registry();
353
354 return num_failures;
355 }
356