Commit | Line | Data |
---|---|---|
e29d1b70 JA |
1 | /* |
2 | * IO verification helpers | |
3 | */ | |
4 | #include <unistd.h> | |
5 | #include <fcntl.h> | |
6 | #include <string.h> | |
97af62ce | 7 | #include <assert.h> |
e29d1b70 JA |
8 | |
9 | #include "fio.h" | |
e29d1b70 | 10 | |
90059d65 | 11 | static void fill_random_bytes(struct thread_data *td, void *p, unsigned int len) |
e29d1b70 JA |
12 | { |
13 | unsigned int todo; | |
4c5946c6 | 14 | int r; |
e29d1b70 JA |
15 | |
16 | while (len) { | |
4c5946c6 | 17 | r = os_random_long(&td->verify_state); |
e29d1b70 JA |
18 | |
19 | /* | |
20 | * lrand48_r seems to be broken and only fill the bottom | |
21 | * 32-bits, even on 64-bit archs with 64-bit longs | |
22 | */ | |
23 | todo = sizeof(r); | |
24 | if (todo > len) | |
25 | todo = len; | |
26 | ||
27 | memcpy(p, &r, todo); | |
28 | ||
29 | len -= todo; | |
30 | p += todo; | |
31 | } | |
32 | } | |
33 | ||
90059d65 JA |
34 | static void fill_pattern(struct thread_data *td, void *p, unsigned int len) |
35 | { | |
36 | switch (td->o.verify_pattern_bytes) { | |
37 | case 0: | |
38 | fill_random_bytes(td, p, len); | |
39 | break; | |
40 | case 1: | |
41 | memset(p, td->o.verify_pattern, len); | |
42 | break; | |
43 | case 2: | |
44 | case 3: | |
45 | case 4: { | |
46 | unsigned int pattern = td->o.verify_pattern; | |
47 | unsigned int i = 0; | |
48 | unsigned char c1, c2, c3, c4; | |
49 | unsigned char *b = p; | |
50 | ||
51 | c1 = pattern & 0xff; | |
52 | pattern >>= 8; | |
53 | c2 = pattern & 0xff; | |
54 | pattern >>= 8; | |
55 | c3 = pattern & 0xff; | |
56 | pattern >>= 8; | |
57 | c4 = pattern & 0xff; | |
58 | ||
59 | while (i < len) { | |
60 | b[i++] = c1; | |
61 | if (i == len) | |
62 | break; | |
63 | b[i++] = c2; | |
64 | if (td->o.verify_pattern_bytes == 2 || i == len) | |
65 | continue; | |
66 | b[i++] = c3; | |
67 | if (td->o.verify_pattern_bytes == 3 || i == len) | |
68 | continue; | |
69 | b[i++] = c4; | |
70 | } | |
71 | break; | |
72 | } | |
73 | } | |
74 | } | |
75 | ||
76 | static void memswp(void* buf1, void* buf2, unsigned int len) | |
546a9142 SL |
77 | { |
78 | struct verify_header swap; | |
90059d65 | 79 | |
546a9142 SL |
80 | memcpy(&swap, buf1, len); |
81 | memcpy(buf1, buf2, len); | |
82 | memcpy(buf2, &swap, len); | |
83 | } | |
84 | ||
e29d1b70 JA |
85 | static void hexdump(void *buffer, int len) |
86 | { | |
87 | unsigned char *p = buffer; | |
88 | int i; | |
89 | ||
90 | for (i = 0; i < len; i++) | |
6d86144d JA |
91 | log_info("%02x", p[i]); |
92 | log_info("\n"); | |
e29d1b70 JA |
93 | } |
94 | ||
d9f2caf3 JA |
95 | /* |
96 | * Return data area 'header_num' | |
97 | */ | |
98 | static inline void *io_u_verify_off(struct verify_header *hdr, | |
99 | struct io_u *io_u, | |
100 | unsigned char header_num) | |
101 | { | |
102 | return io_u->buf + sizeof(*hdr) + header_num * hdr->len; | |
103 | } | |
104 | ||
3f9f4e26 SL |
105 | static int verify_io_u_crc7(struct verify_header *hdr, struct io_u *io_u, |
106 | unsigned char header_num) | |
1e154bdb | 107 | { |
d9f2caf3 | 108 | void *p = io_u_verify_off(hdr, io_u, header_num); |
1e154bdb JA |
109 | unsigned char c; |
110 | ||
1e154bdb JA |
111 | c = crc7(p, hdr->len - sizeof(*hdr)); |
112 | ||
113 | if (c != hdr->crc7) { | |
3f9f4e26 SL |
114 | log_err("crc7: verify failed at %llu/%u\n", |
115 | io_u->offset + header_num * hdr->len, | |
116 | hdr->len); | |
1e154bdb JA |
117 | log_err("crc7: wanted %x, got %x\n", hdr->crc7, c); |
118 | return 1; | |
119 | } | |
120 | ||
121 | return 0; | |
122 | } | |
123 | ||
3f9f4e26 SL |
124 | static int verify_io_u_crc16(struct verify_header *hdr, struct io_u *io_u, |
125 | unsigned int header_num) | |
969f7ed3 | 126 | { |
d9f2caf3 | 127 | void *p = io_u_verify_off(hdr, io_u, header_num); |
969f7ed3 JA |
128 | unsigned short c; |
129 | ||
969f7ed3 JA |
130 | c = crc16(p, hdr->len - sizeof(*hdr)); |
131 | ||
132 | if (c != hdr->crc16) { | |
3f9f4e26 SL |
133 | log_err("crc16: verify failed at %llu/%u\n", |
134 | io_u->offset + header_num * hdr->len, | |
135 | hdr->len); | |
1f24ea44 | 136 | log_err("crc16: wanted %x, got %x\n", hdr->crc16, c); |
969f7ed3 JA |
137 | return 1; |
138 | } | |
139 | ||
140 | return 0; | |
141 | } | |
142 | ||
3f9f4e26 SL |
143 | static int verify_io_u_crc64(struct verify_header *hdr, struct io_u *io_u, |
144 | unsigned int header_num) | |
d77a7af3 | 145 | { |
d9f2caf3 | 146 | void *p = io_u_verify_off(hdr, io_u, header_num); |
d77a7af3 JA |
147 | unsigned long long c; |
148 | ||
149 | c = crc64(p, hdr->len - sizeof(*hdr)); | |
150 | ||
151 | if (c != hdr->crc64) { | |
3f9f4e26 SL |
152 | log_err("crc64: verify failed at %llu/%u\n", |
153 | io_u->offset + header_num * hdr->len, | |
154 | hdr->len); | |
d77a7af3 JA |
155 | log_err("crc64: wanted %llx, got %llx\n", hdr->crc64, c); |
156 | return 1; | |
157 | } | |
158 | ||
159 | return 0; | |
160 | } | |
161 | ||
3f9f4e26 SL |
162 | static int verify_io_u_crc32(struct verify_header *hdr, struct io_u *io_u, |
163 | unsigned int header_num) | |
e29d1b70 | 164 | { |
d9f2caf3 | 165 | void *p = io_u_verify_off(hdr, io_u, header_num); |
e29d1b70 JA |
166 | unsigned long c; |
167 | ||
e29d1b70 JA |
168 | c = crc32(p, hdr->len - sizeof(*hdr)); |
169 | ||
170 | if (c != hdr->crc32) { | |
3f9f4e26 SL |
171 | log_err("crc32: verify failed at %llu/%u\n", |
172 | io_u->offset + header_num * hdr->len, | |
173 | hdr->len); | |
e29d1b70 JA |
174 | log_err("crc32: wanted %lx, got %lx\n", hdr->crc32, c); |
175 | return 1; | |
176 | } | |
177 | ||
178 | return 0; | |
179 | } | |
180 | ||
3f9f4e26 SL |
181 | static int verify_io_u_md5(struct verify_header *hdr, struct io_u *io_u, |
182 | unsigned int header_num) | |
e29d1b70 | 183 | { |
d9f2caf3 | 184 | void *p = io_u_verify_off(hdr, io_u, header_num); |
8c432325 JA |
185 | uint32_t hash[MD5_HASH_WORDS]; |
186 | struct md5_ctx md5_ctx = { | |
187 | .hash = hash, | |
188 | }; | |
e29d1b70 | 189 | |
fd00954c | 190 | memset(md5_ctx.hash, 0, sizeof(hdr->md5_digest)); |
e29d1b70 JA |
191 | md5_update(&md5_ctx, p, hdr->len - sizeof(*hdr)); |
192 | ||
c9b3fdf3 | 193 | if (memcmp(hdr->md5_digest, md5_ctx.hash, sizeof(hash))) { |
3f9f4e26 SL |
194 | log_err("md5: verify failed at %llu/%u\n", |
195 | io_u->offset + header_num * hdr->len, | |
196 | hdr->len); | |
e29d1b70 | 197 | hexdump(hdr->md5_digest, sizeof(hdr->md5_digest)); |
8c432325 | 198 | hexdump(md5_ctx.hash, sizeof(hash)); |
e29d1b70 JA |
199 | return 1; |
200 | } | |
201 | ||
202 | return 0; | |
203 | } | |
204 | ||
36690c9b | 205 | int verify_io_u(struct thread_data *td, struct io_u *io_u) |
e29d1b70 | 206 | { |
3f9f4e26 SL |
207 | struct verify_header *hdr; |
208 | unsigned int hdr_inc, hdr_num = 0; | |
95646108 | 209 | void *p; |
e29d1b70 JA |
210 | int ret; |
211 | ||
1dcc0498 | 212 | if (td->o.verify == VERIFY_NULL || io_u->ddir != DDIR_READ) |
36690c9b JA |
213 | return 0; |
214 | ||
3f9f4e26 | 215 | hdr_inc = io_u->buflen; |
a59e170d JA |
216 | if (td->o.verify_interval) |
217 | hdr_inc = td->o.verify_interval; | |
e29d1b70 | 218 | |
95646108 | 219 | for (p = io_u->buf; p < io_u->buf + io_u->buflen; p += hdr_inc) { |
a59e170d JA |
220 | if (td->o.verify_offset) |
221 | memswp(p, p + td->o.verify_offset, sizeof(*hdr)); | |
546a9142 | 222 | |
95646108 | 223 | hdr = p; |
e29d1b70 | 224 | |
3f9f4e26 SL |
225 | if (hdr->fio_magic != FIO_HDR_MAGIC) { |
226 | log_err("Bad verify header %x\n", hdr->fio_magic); | |
227 | return EIO; | |
228 | } | |
229 | ||
230 | switch (hdr->verify_type) { | |
231 | case VERIFY_MD5: | |
232 | ret = verify_io_u_md5(hdr, io_u, hdr_num); | |
233 | break; | |
234 | case VERIFY_CRC64: | |
235 | ret = verify_io_u_crc64(hdr, io_u, hdr_num); | |
236 | break; | |
237 | case VERIFY_CRC32: | |
238 | ret = verify_io_u_crc32(hdr, io_u, hdr_num); | |
239 | break; | |
240 | case VERIFY_CRC16: | |
241 | ret = verify_io_u_crc16(hdr, io_u, hdr_num); | |
242 | break; | |
243 | case VERIFY_CRC7: | |
244 | ret = verify_io_u_crc7(hdr, io_u, hdr_num); | |
245 | break; | |
246 | default: | |
247 | log_err("Bad verify type %u\n", hdr->verify_type); | |
248 | ret = 1; | |
249 | } | |
250 | hdr_num++; | |
251 | } | |
a7dfe862 JA |
252 | |
253 | return 0; | |
e29d1b70 JA |
254 | } |
255 | ||
1e154bdb JA |
256 | static void fill_crc7(struct verify_header *hdr, void *p, unsigned int len) |
257 | { | |
258 | hdr->crc7 = crc7(p, len); | |
259 | } | |
260 | ||
969f7ed3 JA |
261 | static void fill_crc16(struct verify_header *hdr, void *p, unsigned int len) |
262 | { | |
263 | hdr->crc16 = crc16(p, len); | |
264 | } | |
265 | ||
e29d1b70 JA |
266 | static void fill_crc32(struct verify_header *hdr, void *p, unsigned int len) |
267 | { | |
268 | hdr->crc32 = crc32(p, len); | |
269 | } | |
270 | ||
d77a7af3 JA |
271 | static void fill_crc64(struct verify_header *hdr, void *p, unsigned int len) |
272 | { | |
273 | hdr->crc64 = crc64(p, len); | |
274 | } | |
275 | ||
e29d1b70 JA |
276 | static void fill_md5(struct verify_header *hdr, void *p, unsigned int len) |
277 | { | |
8c432325 JA |
278 | struct md5_ctx md5_ctx = { |
279 | .hash = (uint32_t *) hdr->md5_digest, | |
280 | }; | |
e29d1b70 | 281 | |
fd00954c | 282 | memset(md5_ctx.hash, 0, sizeof(hdr->md5_digest)); |
e29d1b70 | 283 | md5_update(&md5_ctx, p, len); |
e29d1b70 JA |
284 | } |
285 | ||
286 | /* | |
287 | * fill body of io_u->buf with random data and add a header with the | |
288 | * crc32 or md5 sum of that data. | |
289 | */ | |
290 | void populate_verify_io_u(struct thread_data *td, struct io_u *io_u) | |
291 | { | |
baefa9be | 292 | struct verify_header *hdr; |
95646108 | 293 | void *p = io_u->buf, *data; |
546a9142 | 294 | unsigned int hdr_inc, data_len; |
e29d1b70 | 295 | |
9cc3d150 JA |
296 | if (td->o.verify == VERIFY_NULL) |
297 | return; | |
298 | ||
90059d65 | 299 | fill_pattern(td, p, io_u->buflen); |
546a9142 SL |
300 | |
301 | hdr_inc = io_u->buflen; | |
a59e170d JA |
302 | if (td->o.verify_interval) |
303 | hdr_inc = td->o.verify_interval; | |
546a9142 | 304 | data_len = hdr_inc - sizeof(*hdr); |
baefa9be | 305 | |
95646108 JA |
306 | for (;p < io_u->buf + io_u->buflen; p += hdr_inc) { |
307 | hdr = p; | |
3f9f4e26 SL |
308 | |
309 | hdr->fio_magic = FIO_HDR_MAGIC; | |
310 | hdr->verify_type = td->o.verify; | |
546a9142 | 311 | hdr->len = hdr_inc; |
3f9f4e26 SL |
312 | |
313 | data = p + sizeof(*hdr); | |
3f9f4e26 SL |
314 | switch (td->o.verify) { |
315 | case VERIFY_MD5: | |
316 | fill_md5(hdr, data, data_len); | |
317 | break; | |
318 | case VERIFY_CRC64: | |
319 | fill_crc64(hdr, data, data_len); | |
320 | break; | |
321 | case VERIFY_CRC32: | |
322 | fill_crc32(hdr, data, data_len); | |
323 | break; | |
324 | case VERIFY_CRC16: | |
325 | fill_crc16(hdr, data, data_len); | |
326 | break; | |
327 | case VERIFY_CRC7: | |
328 | fill_crc7(hdr, data, data_len); | |
329 | break; | |
330 | default: | |
331 | log_err("fio: bad verify type: %d\n", td->o.verify); | |
332 | assert(0); | |
333 | } | |
a59e170d JA |
334 | if (td->o.verify_offset) |
335 | memswp(p, p + td->o.verify_offset, sizeof(*hdr)); | |
e29d1b70 | 336 | } |
e29d1b70 JA |
337 | } |
338 | ||
339 | int get_next_verify(struct thread_data *td, struct io_u *io_u) | |
340 | { | |
8de8f047 | 341 | struct io_piece *ipo = NULL; |
e29d1b70 | 342 | |
d2d7fa53 JA |
343 | /* |
344 | * this io_u is from a requeue, we already filled the offsets | |
345 | */ | |
346 | if (io_u->file) | |
347 | return 0; | |
348 | ||
8de8f047 JA |
349 | if (!RB_EMPTY_ROOT(&td->io_hist_tree)) { |
350 | struct rb_node *n = rb_first(&td->io_hist_tree); | |
e29d1b70 | 351 | |
8de8f047 | 352 | ipo = rb_entry(n, struct io_piece, rb_node); |
4b87898e | 353 | rb_erase(n, &td->io_hist_tree); |
8de8f047 JA |
354 | } else if (!list_empty(&td->io_hist_list)) { |
355 | ipo = list_entry(td->io_hist_list.next, struct io_piece, list); | |
356 | list_del(&ipo->list); | |
357 | } | |
e29d1b70 | 358 | |
8de8f047 | 359 | if (ipo) { |
e29d1b70 JA |
360 | io_u->offset = ipo->offset; |
361 | io_u->buflen = ipo->len; | |
36167d82 | 362 | io_u->file = ipo->file; |
97af62ce JA |
363 | |
364 | if ((io_u->file->flags & FIO_FILE_OPEN) == 0) { | |
365 | int r = td_io_open_file(td, io_u->file); | |
366 | ||
367 | if (r) | |
368 | return 1; | |
369 | } | |
370 | ||
371 | get_file(ipo->file); | |
372 | assert(io_u->file->flags & FIO_FILE_OPEN); | |
e29d1b70 | 373 | io_u->ddir = DDIR_READ; |
36167d82 JA |
374 | io_u->xfer_buf = io_u->buf; |
375 | io_u->xfer_buflen = io_u->buflen; | |
e29d1b70 JA |
376 | free(ipo); |
377 | return 0; | |
378 | } | |
379 | ||
380 | return 1; | |
381 | } |