Style fixup
[fio.git] / server.h
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1#ifndef FIO_SERVER_H
2#define FIO_SERVER_H
3
132159a5 4#include <inttypes.h>
142575e6 5#include <string.h>
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6#include <endian.h>
7
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8#include "stat.h"
9
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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 serial; /* serial number */
132159a5 18 uint32_t pdu_len; /* length of post-cmd layload */
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19 /*
20 * These must be immediately before the payload, anything before
21 * these fields are checksummed.
22 */
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23 uint16_t cmd_crc16; /* cmd checksum */
24 uint16_t pdu_crc16; /* payload checksum */
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25 uint8_t payload[0]; /* payload */
26};
27
28enum {
29 FIO_SERVER_VER = 1,
30 FIO_SERVER_VER1 = 1,
31
794d69ca 32 FIO_SERVER_MAX_PDU = 64,
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33
34 FIO_NET_CMD_QUIT = 1,
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35 FIO_NET_CMD_EXIT = 2,
36 FIO_NET_CMD_JOB = 3,
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37 FIO_NET_CMD_TEXT = 4,
38 FIO_NET_CMD_TS = 5,
39 FIO_NET_CMD_GS = 6,
40 FIO_NET_CMD_ETA = 7,
41 FIO_NET_CMD_PROBE = 8,
794d69ca 42
d7959186 43 FIO_NET_CMD_F_MORE = 1UL << 0,
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44
45 /* crc does not include the crc fields */
46 FIO_NET_CMD_CRC_SZ = sizeof(struct fio_net_cmd) -
47 2 * sizeof(uint16_t),
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48};
49
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50struct cmd_ts_pdu {
51 struct thread_stat ts;
52 struct group_run_stats rs;
53};
54
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55struct cmd_probe_pdu {
56 uint8_t hostname[64];
57 uint8_t fio_major;
58 uint8_t fio_minor;
59 uint8_t fio_patch;
60};
61
e46d8091 62extern int fio_start_server(int);
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63extern int fio_server_text_output(const char *, unsigned int len);
64extern int fio_server_log(const char *format, ...);
a64e88da 65extern int fio_net_send_cmd(int, uint16_t, const void *, off_t);
cc0df00a 66extern int fio_net_send_simple_cmd(int sk, uint16_t opcode, uint64_t serial);
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67
68struct thread_stat;
69struct group_run_stats;
70extern void fio_server_send_ts(struct thread_stat *, struct group_run_stats *);
71extern void fio_server_send_gs(struct group_run_stats *);
cf451d1e 72extern void fio_server_send_status(void);
cc0df00a 73extern void fio_server_idle_loop(void);
132159a5 74
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75extern int fio_clients_connect(void);
76extern int fio_clients_send_ini(const char *);
37db14fe 77extern int fio_handle_clients(void);
a37f69b7 78extern void fio_client_add(const char *);
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79
80extern int fio_recv_data(int sk, void *p, unsigned int len);
81extern int fio_send_data(int sk, const void *p, unsigned int len);
82extern void fio_net_cmd_crc(struct fio_net_cmd *);
70e0c316 83extern struct fio_net_cmd *fio_net_recv_cmd(int sk, int block);
132159a5 84
009b1be4 85extern int exit_backend;
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86extern int fio_net_port;
87
88#if __BYTE_ORDER == __LITTLE_ENDIAN
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89#define __le16_to_cpu(x) (x)
90#define __le32_to_cpu(x) (x)
91#define __le64_to_cpu(x) (x)
92#define __cpu_to_le16(x) (x)
93#define __cpu_to_le32(x) (x)
94#define __cpu_to_le64(x) (x)
132159a5 95#elif __BYTE_ORDER == __BIG_ENDIAN
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96#define __le16_to_cpu(x) __bswap_16(x)
97#define __le32_to_cpu(x) __bswap_32(x)
98#define __le64_to_cpu(x) __bswap_64(x)
99#define __cpu_to_le16(x) __bswap_16(x)
100#define __cpu_to_le32(x) __bswap_32(x)
101#define __cpu_to_le64(x) __bswap_64(x)
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102#else
103#error "Endianness not detected"
104#endif
105
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106#define le16_to_cpu(val) ({ \
107 uint16_t *__val = &(val); \
108 __le16_to_cpu(*__val); \
109})
110#define le32_to_cpu(val) ({ \
111 uint32_t *__val = &(val); \
112 __le32_to_cpu(*__val); \
113})
114#define le64_to_cpu(val) ({ \
115 uint64_t *__val = &(val); \
116 __le64_to_cpu(*__val); \
117})
118#define cpu_to_le16(val) ({ \
119 uint16_t *__val = &(val); \
120 __cpu_to_le16(*__val); \
121})
122#define cpu_to_le32(val) ({ \
123 uint32_t *__val = &(val); \
124 __cpu_to_le32(*__val); \
125})
126#define cpu_to_le64(val) ({ \
127 uint64_t *__val = &(val); \
128 __cpu_to_le64(*__val); \
129})
130
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131static inline void fio_init_net_cmd(struct fio_net_cmd *cmd, uint16_t opcode,
132 const void *pdu, uint32_t pdu_len)
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133{
134 memset(cmd, 0, sizeof(*cmd));
4d8f8780 135
ddcc0b69 136 cmd->version = __cpu_to_le16(FIO_SERVER_VER1);
82fa6b21 137 cmd->opcode = cpu_to_le16(opcode);
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138
139 if (pdu) {
140 cmd->pdu_len = cpu_to_le32(pdu_len);
141 memcpy(&cmd->payload, pdu, pdu_len);
142 }
132159a5 143}
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144
145#endif