2 * IO verification helpers
12 #include "crc/crc64.h"
13 #include "crc/crc32.h"
14 #include "crc/crc16.h"
16 #include "crc/sha256.h"
17 #include "crc/sha512.h"
19 static void fill_random_bytes(struct thread_data *td, void *p, unsigned int len)
25 r = os_random_long(&td->verify_state);
28 * lrand48_r seems to be broken and only fill the bottom
29 * 32-bits, even on 64-bit archs with 64-bit longs
42 static void fill_pattern(struct thread_data *td, void *p, unsigned int len)
44 switch (td->o.verify_pattern_bytes) {
46 dprint(FD_VERIFY, "fill random bytes len=%u\n", len);
47 fill_random_bytes(td, p, len);
50 dprint(FD_VERIFY, "fill verify pattern b=0 len=%u\n", len);
51 memset(p, td->o.verify_pattern, len);
56 unsigned int pattern = td->o.verify_pattern;
58 unsigned char c1, c2, c3, c4;
61 dprint(FD_VERIFY, "fill verify pattern b=%d len=%u\n",
62 td->o.verify_pattern_bytes, len);
77 if (td->o.verify_pattern_bytes == 2 || i == len)
80 if (td->o.verify_pattern_bytes == 3 || i == len)
89 static void memswp(void *buf1, void *buf2, unsigned int len)
93 assert(len <= sizeof(swap));
95 memcpy(&swap, buf1, len);
96 memcpy(buf1, buf2, len);
97 memcpy(buf2, &swap, len);
100 static void hexdump(void *buffer, int len)
102 unsigned char *p = buffer;
105 for (i = 0; i < len; i++)
106 log_info("%02x", p[i]);
111 * Prepare for seperation of verify_header and checksum header
113 static inline unsigned int __hdr_size(int verify_type)
117 switch (verify_type) {
123 len = sizeof(struct vhdr_md5);
126 len = sizeof(struct vhdr_crc64);
129 len = sizeof(struct vhdr_crc32);
132 len = sizeof(struct vhdr_crc16);
135 len = sizeof(struct vhdr_crc7);
138 len = sizeof(struct vhdr_sha256);
141 len = sizeof(struct vhdr_sha512);
144 len = sizeof(struct vhdr_meta);
147 log_err("fio: unknown verify header!\n");
151 return len + sizeof(struct verify_header);
154 static inline unsigned int hdr_size(struct verify_header *hdr)
156 return __hdr_size(hdr->verify_type);
159 static void *hdr_priv(struct verify_header *hdr)
163 return priv + sizeof(struct verify_header);
167 * Return data area 'header_num'
169 static inline void *io_u_verify_off(struct verify_header *hdr,
171 unsigned char header_num)
173 return io_u->buf + header_num * hdr->len + hdr_size(hdr);
176 static int verify_io_u_meta(struct verify_header *hdr, struct thread_data *td,
177 struct io_u *io_u, unsigned int header_num)
179 struct vhdr_meta *vh = hdr_priv(hdr);
181 dprint(FD_VERIFY, "meta verify io_u %p, len %u\n", io_u, hdr->len);
183 if (vh->offset != io_u->offset + header_num * td->o.verify_interval) {
184 log_err("meta: verify failed at %llu/%u\n",
185 io_u->offset + header_num * hdr->len,
193 static int verify_io_u_sha512(struct verify_header *hdr, struct io_u *io_u,
194 unsigned int header_num)
196 void *p = io_u_verify_off(hdr, io_u, header_num);
197 struct vhdr_sha512 *vh = hdr_priv(hdr);
199 struct sha512_ctx sha512_ctx = {
203 dprint(FD_VERIFY, "sha512 verify io_u %p, len %u\n", io_u, hdr->len);
205 sha512_init(&sha512_ctx);
206 sha512_update(&sha512_ctx, p, hdr->len - hdr_size(hdr));
208 if (memcmp(vh->sha512, sha512_ctx.buf, sizeof(sha512))) {
209 log_err("sha512: verify failed at %llu/%u\n",
210 io_u->offset + header_num * hdr->len,
212 hexdump(vh->sha512, sizeof(vh->sha512));
213 hexdump(sha512_ctx.buf, sizeof(sha512));
220 static int verify_io_u_sha256(struct verify_header *hdr, struct io_u *io_u,
221 unsigned int header_num)
223 void *p = io_u_verify_off(hdr, io_u, header_num);
224 struct vhdr_sha256 *vh = hdr_priv(hdr);
226 struct sha256_ctx sha256_ctx = {
230 dprint(FD_VERIFY, "sha256 verify io_u %p, len %u\n", io_u, hdr->len);
232 sha256_init(&sha256_ctx);
233 sha256_update(&sha256_ctx, p, hdr->len - hdr_size(hdr));
235 if (memcmp(vh->sha256, sha256_ctx.buf, sizeof(sha256))) {
236 log_err("sha256: verify failed at %llu/%u\n",
237 io_u->offset + header_num * hdr->len,
239 hexdump(vh->sha256, sizeof(vh->sha256));
240 hexdump(sha256_ctx.buf, sizeof(sha256));
247 static int verify_io_u_crc7(struct verify_header *hdr, struct io_u *io_u,
248 unsigned char header_num)
250 void *p = io_u_verify_off(hdr, io_u, header_num);
251 struct vhdr_crc7 *vh = hdr_priv(hdr);
254 dprint(FD_VERIFY, "crc7 verify io_u %p, len %u\n", io_u, hdr->len);
256 c = crc7(p, hdr->len - hdr_size(hdr));
259 log_err("crc7: verify failed at %llu/%u\n",
260 io_u->offset + header_num * hdr->len,
262 log_err("crc7: wanted %x, got %x\n", vh->crc7, c);
269 static int verify_io_u_crc16(struct verify_header *hdr, struct io_u *io_u,
270 unsigned int header_num)
272 void *p = io_u_verify_off(hdr, io_u, header_num);
273 struct vhdr_crc16 *vh = hdr_priv(hdr);
276 dprint(FD_VERIFY, "crc16 verify io_u %p, len %u\n", io_u, hdr->len);
278 c = crc16(p, hdr->len - hdr_size(hdr));
280 if (c != vh->crc16) {
281 log_err("crc16: verify failed at %llu/%u\n",
282 io_u->offset + header_num * hdr->len,
284 log_err("crc16: wanted %x, got %x\n", vh->crc16, c);
291 static int verify_io_u_crc64(struct verify_header *hdr, struct io_u *io_u,
292 unsigned int header_num)
294 void *p = io_u_verify_off(hdr, io_u, header_num);
295 struct vhdr_crc64 *vh = hdr_priv(hdr);
296 unsigned long long c;
298 dprint(FD_VERIFY, "crc64 verify io_u %p, len %u\n", io_u, hdr->len);
300 c = crc64(p, hdr->len - hdr_size(hdr));
302 if (c != vh->crc64) {
303 log_err("crc64: verify failed at %llu/%u\n",
304 io_u->offset + header_num * hdr->len,
306 log_err("crc64: wanted %llx, got %llx\n", (unsigned long long) vh->crc64, c);
313 static int verify_io_u_crc32(struct verify_header *hdr, struct io_u *io_u,
314 unsigned int header_num)
316 void *p = io_u_verify_off(hdr, io_u, header_num);
317 struct vhdr_crc32 *vh = hdr_priv(hdr);
320 dprint(FD_VERIFY, "crc32 verify io_u %p, len %u\n", io_u, hdr->len);
322 c = crc32(p, hdr->len - hdr_size(hdr));
324 if (c != vh->crc32) {
325 log_err("crc32: verify failed at %llu/%u\n",
326 io_u->offset + header_num * hdr->len,
328 log_err("crc32: wanted %x, got %x\n", vh->crc32, c);
335 static int verify_io_u_md5(struct verify_header *hdr, struct io_u *io_u,
336 unsigned int header_num)
338 void *p = io_u_verify_off(hdr, io_u, header_num);
339 struct vhdr_md5 *vh = hdr_priv(hdr);
340 uint32_t hash[MD5_HASH_WORDS];
341 struct md5_ctx md5_ctx = {
345 dprint(FD_VERIFY, "md5 verify io_u %p, len %u\n", io_u, hdr->len);
348 md5_update(&md5_ctx, p, hdr->len - hdr_size(hdr));
350 if (memcmp(vh->md5_digest, md5_ctx.hash, sizeof(hash))) {
351 log_err("md5: verify failed at %llu/%u\n",
352 io_u->offset + header_num * hdr->len,
354 hexdump(vh->md5_digest, sizeof(vh->md5_digest));
355 hexdump(md5_ctx.hash, sizeof(hash));
362 static unsigned int hweight8(unsigned int w)
364 unsigned int res = w - ((w >> 1) & 0x55);
366 res = (res & 0x33) + ((res >> 2) & 0x33);
367 return (res + (res >> 4)) & 0x0F;
370 int verify_io_u_pattern(unsigned long pattern, unsigned long pattern_size,
371 char *buf, unsigned int len, unsigned int mod)
374 char split_pattern[4];
376 for (i = 0; i < 4; i++) {
377 split_pattern[i] = pattern & 0xff;
381 for (i = 0; i < len; i++) {
382 if (buf[i] != split_pattern[mod]) {
385 bits = hweight8(buf[i] ^ split_pattern[mod]);
386 log_err("fio: got pattern %x, wanted %x. Bad bits %d\n",
387 buf[i], split_pattern[mod], bits);
388 log_err("fio: bad pattern block offset %u\n", i);
392 if (mod == pattern_size)
399 int verify_io_u(struct thread_data *td, struct io_u *io_u)
401 struct verify_header *hdr;
402 unsigned int hdr_size, hdr_inc, hdr_num = 0;
406 if (td->o.verify == VERIFY_NULL || io_u->ddir != DDIR_READ)
409 hdr_inc = io_u->buflen;
410 if (td->o.verify_interval)
411 hdr_inc = td->o.verify_interval;
414 for (p = io_u->buf; p < io_u->buf + io_u->buflen; p += hdr_inc, hdr_num++) {
415 if (ret && td->o.verify_fatal) {
419 hdr_size = __hdr_size(td->o.verify);
420 if (td->o.verify_offset)
421 memswp(p, p + td->o.verify_offset, hdr_size);
424 if (hdr->fio_magic != FIO_HDR_MAGIC) {
425 log_err("Bad verify header %x\n", hdr->fio_magic);
429 if (td->o.verify_pattern_bytes) {
430 dprint(FD_VERIFY, "pattern verify io_u %p, len %u\n",
432 ret = verify_io_u_pattern(td->o.verify_pattern,
433 td->o.verify_pattern_bytes,
438 log_err("fio: verify failed at %llu/%u\n",
439 io_u->offset + hdr_num * hdr->len,
444 switch (hdr->verify_type) {
446 ret = verify_io_u_md5(hdr, io_u, hdr_num);
449 ret = verify_io_u_crc64(hdr, io_u, hdr_num);
452 ret = verify_io_u_crc32(hdr, io_u, hdr_num);
455 ret = verify_io_u_crc16(hdr, io_u, hdr_num);
458 ret = verify_io_u_crc7(hdr, io_u, hdr_num);
461 ret = verify_io_u_sha256(hdr, io_u, hdr_num);
464 ret = verify_io_u_sha512(hdr, io_u, hdr_num);
467 ret = verify_io_u_meta(hdr, td, io_u, hdr_num);
470 log_err("Bad verify type %u\n", hdr->verify_type);
478 static void fill_meta(struct verify_header *hdr, struct thread_data *td,
479 struct io_u *io_u, unsigned int header_num)
481 struct vhdr_meta *vh = hdr_priv(hdr);
483 vh->thread = td->thread_number;
485 vh->time_sec = io_u->start_time.tv_sec;
486 vh->time_usec = io_u->start_time.tv_usec;
488 vh->numberio = td->io_issues[DDIR_WRITE];
490 vh->offset = io_u->offset + header_num * td->o.verify_interval;
493 static void fill_sha512(struct verify_header *hdr, void *p, unsigned int len)
495 struct vhdr_sha512 *vh = hdr_priv(hdr);
496 struct sha512_ctx sha512_ctx = {
500 sha512_init(&sha512_ctx);
501 sha512_update(&sha512_ctx, p, len);
504 static void fill_sha256(struct verify_header *hdr, void *p, unsigned int len)
506 struct vhdr_sha256 *vh = hdr_priv(hdr);
507 struct sha256_ctx sha256_ctx = {
511 sha256_init(&sha256_ctx);
512 sha256_update(&sha256_ctx, p, len);
515 static void fill_crc7(struct verify_header *hdr, void *p, unsigned int len)
517 struct vhdr_crc7 *vh = hdr_priv(hdr);
519 vh->crc7 = crc7(p, len);
522 static void fill_crc16(struct verify_header *hdr, void *p, unsigned int len)
524 struct vhdr_crc16 *vh = hdr_priv(hdr);
526 vh->crc16 = crc16(p, len);
529 static void fill_crc32(struct verify_header *hdr, void *p, unsigned int len)
531 struct vhdr_crc32 *vh = hdr_priv(hdr);
533 vh->crc32 = crc32(p, len);
536 static void fill_crc64(struct verify_header *hdr, void *p, unsigned int len)
538 struct vhdr_crc64 *vh = hdr_priv(hdr);
540 vh->crc64 = crc64(p, len);
543 static void fill_md5(struct verify_header *hdr, void *p, unsigned int len)
545 struct vhdr_md5 *vh = hdr_priv(hdr);
546 struct md5_ctx md5_ctx = {
547 .hash = (uint32_t *) vh->md5_digest,
551 md5_update(&md5_ctx, p, len);
555 * fill body of io_u->buf with random data and add a header with the
556 * crc32 or md5 sum of that data.
558 void populate_verify_io_u(struct thread_data *td, struct io_u *io_u)
560 struct verify_header *hdr;
561 void *p = io_u->buf, *data;
562 unsigned int hdr_inc, data_len, header_num = 0;
564 if (td->o.verify == VERIFY_NULL)
567 fill_pattern(td, p, io_u->buflen);
569 hdr_inc = io_u->buflen;
570 if (td->o.verify_interval)
571 hdr_inc = td->o.verify_interval;
573 for (;p < io_u->buf + io_u->buflen; p += hdr_inc) {
576 hdr->fio_magic = FIO_HDR_MAGIC;
577 hdr->verify_type = td->o.verify;
579 data_len = hdr_inc - hdr_size(hdr);
581 data = p + hdr_size(hdr);
582 switch (td->o.verify) {
584 dprint(FD_VERIFY, "fill md5 io_u %p, len %u\n",
586 fill_md5(hdr, data, data_len);
589 dprint(FD_VERIFY, "fill crc64 io_u %p, len %u\n",
591 fill_crc64(hdr, data, data_len);
594 dprint(FD_VERIFY, "fill crc32 io_u %p, len %u\n",
596 fill_crc32(hdr, data, data_len);
599 dprint(FD_VERIFY, "fill crc16 io_u %p, len %u\n",
601 fill_crc16(hdr, data, data_len);
604 dprint(FD_VERIFY, "fill crc7 io_u %p, len %u\n",
606 fill_crc7(hdr, data, data_len);
609 dprint(FD_VERIFY, "fill sha256 io_u %p, len %u\n",
611 fill_sha256(hdr, data, data_len);
614 dprint(FD_VERIFY, "fill sha512 io_u %p, len %u\n",
616 fill_sha512(hdr, data, data_len);
619 dprint(FD_VERIFY, "fill meta io_u %p, len %u\n",
621 fill_meta(hdr, td, io_u, header_num);
624 log_err("fio: bad verify type: %d\n", td->o.verify);
627 if (td->o.verify_offset)
628 memswp(p, p + td->o.verify_offset, hdr_size(hdr));
633 int get_next_verify(struct thread_data *td, struct io_u *io_u)
635 struct io_piece *ipo = NULL;
638 * this io_u is from a requeue, we already filled the offsets
643 if (!RB_EMPTY_ROOT(&td->io_hist_tree)) {
644 struct rb_node *n = rb_first(&td->io_hist_tree);
646 ipo = rb_entry(n, struct io_piece, rb_node);
647 rb_erase(n, &td->io_hist_tree);
648 } else if (!list_empty(&td->io_hist_list)) {
649 ipo = list_entry(td->io_hist_list.next, struct io_piece, list);
650 list_del(&ipo->list);
654 io_u->offset = ipo->offset;
655 io_u->buflen = ipo->len;
656 io_u->file = ipo->file;
658 if ((io_u->file->flags & FIO_FILE_OPEN) == 0) {
659 int r = td_io_open_file(td, io_u->file);
662 dprint(FD_VERIFY, "failed file %s open\n",
663 io_u->file->file_name);
669 assert(io_u->file->flags & FIO_FILE_OPEN);
670 io_u->ddir = DDIR_READ;
671 io_u->xfer_buf = io_u->buf;
672 io_u->xfer_buflen = io_u->buflen;
674 dprint(FD_VERIFY, "get_next_verify: ret io_u %p\n", io_u);
678 dprint(FD_VERIFY, "get_next_verify: empty\n");