1#ifndef FIO_VERIFY_H
2#define FIO_VERIFY_H
3
4#include <stdint.h>
5
6#define FIO_HDR_MAGIC	0xacca
7
8enum {
9	VERIFY_NONE = 0,		/* no verification */
10	VERIFY_MD5,			/* md5 sum data blocks */
11	VERIFY_CRC64,			/* crc64 sum data blocks */
12	VERIFY_CRC32,			/* crc32 sum data blocks */
13	VERIFY_CRC32C,			/* crc32c sum data blocks */
14	VERIFY_CRC32C_INTEL,		/* crc32c sum data blocks with hw */
15	VERIFY_CRC16,			/* crc16 sum data blocks */
16	VERIFY_CRC7,			/* crc7 sum data blocks */
17	VERIFY_SHA256,			/* sha256 sum data blocks */
18	VERIFY_SHA512,			/* sha512 sum data blocks */
19	VERIFY_XXHASH,			/* xxhash sum data blocks */
20	VERIFY_META,			/* block_num, timestamp etc. */
21	VERIFY_SHA1,			/* sha1 sum data blocks */
22	VERIFY_PATTERN,			/* verify specific patterns */
23	VERIFY_NULL,			/* pretend to verify */
24};
25
26/*
27 * A header structure associated with each checksummed data block. It is
28 * followed by a checksum specific header that contains the verification
29 * data.
30 */
31struct verify_header {
32	uint16_t magic;
33	uint16_t verify_type;
34	uint32_t len;
35	uint64_t rand_seed;
36	uint32_t crc32;
37};
38
39struct vhdr_md5 {
40	uint32_t md5_digest[4];
41};
42struct vhdr_sha512 {
43	uint8_t sha512[128];
44};
45struct vhdr_sha256 {
46	uint8_t sha256[64];
47};
48struct vhdr_sha1 {
49	uint32_t sha1[5];
50};
51struct vhdr_crc64 {
52	uint64_t crc64;
53};
54struct vhdr_crc32 {
55	uint32_t crc32;
56};
57struct vhdr_crc16 {
58	uint16_t crc16;
59};
60struct vhdr_crc7 {
61	uint8_t crc7;
62};
63struct vhdr_meta {
64	uint64_t offset;
65	unsigned char thread;
66	unsigned short numberio;
67	unsigned long time_sec;
68	unsigned long time_usec;
69};
70struct vhdr_xxhash {
71	uint32_t hash;
72};
73
74/*
75 * Verify helpers
76 */
77extern void populate_verify_io_u(struct thread_data *, struct io_u *);
78extern int __must_check get_next_verify(struct thread_data *td, struct io_u *);
79extern int __must_check verify_io_u(struct thread_data *, struct io_u **);
80extern int verify_io_u_async(struct thread_data *, struct io_u **);
81extern void fill_verify_pattern(struct thread_data *td, void *p, unsigned int len, struct io_u *io_u, unsigned long seed, int use_seed);
82extern void fill_buffer_pattern(struct thread_data *td, void *p, unsigned int len);
83extern void fio_verify_init(struct thread_data *td);
84
85/*
86 * Async verify offload
87 */
88extern int verify_async_init(struct thread_data *);
89extern void verify_async_exit(struct thread_data *);
90
91struct thread_rand_state {
92	uint32_t s[4];
93};
94
95/*
96 * For dumping current write state
97 */
98struct thread_io_list {
99	uint64_t no_comps;
100	uint64_t depth;
101	uint64_t numberio;
102	uint64_t index;
103	struct thread_rand_state rand;
104	uint8_t name[64];
105	uint64_t offsets[0];
106};
107
108struct all_io_list {
109	uint64_t threads;
110	struct thread_io_list state[0];
111};
112
113#define VSTATE_HDR_VERSION	0x01
114
115struct verify_state_hdr {
116	uint64_t version;
117	uint64_t size;
118	uint64_t crc;
119};
120
121#define IO_LIST_ALL		0xffffffff
122extern struct all_io_list *get_all_io_list(int, size_t *);
123extern void __verify_save_state(struct all_io_list *, const char *);
124extern void verify_save_state(void);
125extern int verify_load_state(struct thread_data *, const char *);
126extern void verify_free_state(struct thread_data *);
127extern int verify_state_should_stop(struct thread_data *, struct io_u *);
128extern void verify_convert_assign_state(struct thread_data *, struct thread_io_list *);
129extern int verify_state_hdr(struct verify_state_hdr *, struct thread_io_list *);
130
131static inline size_t thread_io_list_sz(struct thread_io_list *s)
132{
133	return sizeof(*s) + le64_to_cpu(s->depth) * sizeof(uint64_t);
134}
135
136static inline struct thread_io_list *io_list_next(struct thread_io_list *s)
137{
138	return (void *) s + thread_io_list_sz(s);
139}
140
141static inline void verify_state_gen_name(char *out, size_t size,
142					 const char *name, const char *prefix,
143					 int num)
144{
145	snprintf(out, size, "%s-%s-%d-verify.state", prefix, name, num);
146	out[size - 1] = '\0';
147}
148
149#endif
150