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