11 * On-wire encoding is little endian
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 */
20 * These must be immediately before the payload, anything before
21 * these fields are checksummed.
23 uint16_t cmd_crc16; /* cmd checksum */
24 uint16_t pdu_crc16; /* payload checksum */
25 uint8_t payload[0]; /* payload */
31 FIO_SERVER_MAX_PDU = 1024,
36 FIO_NET_CMD_JOBLINE = 4,
40 FIO_NET_CMD_SEND_ETA = 8,
42 FIO_NET_CMD_PROBE = 10,
43 FIO_NET_CMD_START = 11,
44 FIO_NET_CMD_STOP = 12,
46 FIO_NET_CMD_F_MORE = 1UL << 0,
48 /* crc does not include the crc fields */
49 FIO_NET_CMD_CRC_SZ = sizeof(struct fio_net_cmd) -
54 struct thread_stat ts;
55 struct group_run_stats rs;
58 struct cmd_probe_pdu {
68 struct cmd_single_line_pdu {
75 struct cmd_single_line_pdu options[0];
78 extern int fio_start_server(char *);
79 extern int fio_server_text_output(const char *, size_t);
80 extern int fio_server_log(const char *format, ...);
81 extern int fio_net_send_cmd(int, uint16_t, const void *, off_t, uint64_t);
82 extern int fio_net_send_simple_cmd(int sk, uint16_t opcode, uint64_t tag);
83 extern void fio_server_set_arg(const char *);
84 extern int fio_server_parse_string(const char *, char **, int *, int *, struct in_addr *);
87 struct group_run_stats;
88 extern void fio_server_send_ts(struct thread_stat *, struct group_run_stats *);
89 extern void fio_server_send_gs(struct group_run_stats *);
90 extern void fio_server_idle_loop(void);
92 extern int fio_clients_connect(void);
93 extern int fio_clients_send_ini(const char *);
94 extern int fio_handle_clients(void);
95 extern int fio_client_add(const char *, void **);
96 extern void fio_client_add_cmd_option(void *, const char *);
98 extern int fio_recv_data(int sk, void *p, unsigned int len);
99 extern int fio_send_data(int sk, const void *p, unsigned int len);
100 extern void fio_net_cmd_crc(struct fio_net_cmd *);
101 extern struct fio_net_cmd *fio_net_recv_cmd(int sk);
103 extern int exit_backend;
104 extern int fio_net_port;
106 static inline void fio_init_net_cmd(struct fio_net_cmd *cmd, uint16_t opcode,
107 const void *pdu, uint32_t pdu_len,
110 memset(cmd, 0, sizeof(*cmd));
112 cmd->version = __cpu_to_le16(FIO_SERVER_VER);
113 cmd->opcode = cpu_to_le16(opcode);
114 cmd->tag = cpu_to_le64(tag);
117 cmd->pdu_len = cpu_to_le32(pdu_len);
118 memcpy(&cmd->payload, pdu, pdu_len);