server.h revision 13755d946d034eb7395a818db7ace2c9cb60b4cb 
1#ifndef FIO_SERVER_H
2#define FIO_SERVER_H
3
4#include <inttypes.h>
5#include <string.h>
6
7#include "stat.h"
8#include "os/os.h"
9
10/*
11 * On-wire encoding is little endian
12 */
13struct fio_net_cmd {
14	uint16_t version;	/* protocol version */
15	uint16_t opcode;	/* command opcode */
16	uint32_t flags;		/* modifier flags */
17	uint64_t tag;		/* passed back on reply */
18	uint32_t pdu_len;	/* length of post-cmd layload */
19	/*
20	 * These must be immediately before the payload, anything before
21	 * these fields are checksummed.
22	 */
23	uint16_t cmd_crc16;	/* cmd checksum */
24	uint16_t pdu_crc16;	/* payload checksum */
25	uint8_t payload[0];	/* payload */
26};
27
28enum {
29	FIO_SERVER_VER		= 5,
30
31	FIO_SERVER_MAX_PDU	= 1024,
32
33	FIO_NET_CMD_QUIT	= 1,
34	FIO_NET_CMD_EXIT	= 2,
35	FIO_NET_CMD_JOB		= 3,
36	FIO_NET_CMD_JOBLINE	= 4,
37	FIO_NET_CMD_TEXT	= 5,
38	FIO_NET_CMD_TS		= 6,
39	FIO_NET_CMD_GS		= 7,
40	FIO_NET_CMD_SEND_ETA	= 8,
41	FIO_NET_CMD_ETA		= 9,
42	FIO_NET_CMD_PROBE	= 10,
43	FIO_NET_CMD_START	= 11,
44	FIO_NET_CMD_STOP	= 12,
45
46	FIO_NET_CMD_F_MORE	= 1UL << 0,
47
48	/* crc does not include the crc fields */
49	FIO_NET_CMD_CRC_SZ	= sizeof(struct fio_net_cmd) -
50					2 * sizeof(uint16_t),
51};
52
53struct cmd_ts_pdu {
54	struct thread_stat ts;
55	struct group_run_stats rs;
56};
57
58struct cmd_probe_pdu {
59	uint8_t hostname[64];
60	uint8_t bigendian;
61	uint8_t fio_major;
62	uint8_t fio_minor;
63	uint8_t fio_patch;
64	uint8_t os;
65	uint8_t arch;
66};
67
68struct cmd_single_line_pdu {
69	uint16_t len;
70	uint8_t text[0];
71};
72
73struct cmd_line_pdu {
74	uint16_t lines;
75	struct cmd_single_line_pdu options[0];
76};
77
78extern int fio_start_server(char *);
79extern int fio_server_text_output(const char *, size_t);
80extern int fio_server_log(const char *format, ...);
81extern int fio_net_send_cmd(int, uint16_t, const void *, off_t, uint64_t);
82extern int fio_net_send_simple_cmd(int sk, uint16_t opcode, uint64_t tag);
83extern void fio_server_set_arg(const char *);
84extern int fio_server_parse_string(const char *, char **, int *, int *, struct in_addr *);
85
86struct thread_stat;
87struct group_run_stats;
88extern void fio_server_send_ts(struct thread_stat *, struct group_run_stats *);
89extern void fio_server_send_gs(struct group_run_stats *);
90extern void fio_server_idle_loop(void);
91
92extern int fio_clients_connect(void);
93extern int fio_clients_send_ini(const char *);
94extern int fio_handle_clients(void);
95extern int fio_client_add(const char *, void **);
96extern void fio_client_add_cmd_option(void *, const char *);
97
98extern int fio_recv_data(int sk, void *p, unsigned int len);
99extern int fio_send_data(int sk, const void *p, unsigned int len);
100extern void fio_net_cmd_crc(struct fio_net_cmd *);
101extern struct fio_net_cmd *fio_net_recv_cmd(int sk);
102
103extern int exit_backend;
104extern int fio_net_port;
105
106static inline void fio_init_net_cmd(struct fio_net_cmd *cmd, uint16_t opcode,
107				    const void *pdu, uint32_t pdu_len,
108				    uint64_t tag)
109{
110	memset(cmd, 0, sizeof(*cmd));
111
112	cmd->version	= __cpu_to_le16(FIO_SERVER_VER);
113	cmd->opcode	= cpu_to_le16(opcode);
114	cmd->tag	= cpu_to_le64(tag);
115
116	if (pdu) {
117		cmd->pdu_len	= cpu_to_le32(pdu_len);
118		memcpy(&cmd->payload, pdu, pdu_len);
119	}
120}
121
122#endif
123