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 serial; /* serial number */
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 */
32 FIO_SERVER_MAX_PDU = 1024,
37 FIO_NET_CMD_JOBLINE = 4,
42 FIO_NET_CMD_PROBE = 9,
43 FIO_NET_CMD_START = 10,
44 FIO_NET_CMD_STOP = 11,
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) -
52 FIO_NET_CMD_JOBLINE_ARGV = 128,
56 struct thread_stat ts;
57 struct group_run_stats rs;
60 struct cmd_probe_pdu {
72 uint8_t argv[FIO_NET_CMD_JOBLINE_ARGV][64];
75 extern int fio_start_server(int);
76 extern int fio_server_text_output(const char *, unsigned int len);
77 extern int fio_server_log(const char *format, ...);
78 extern int fio_net_send_cmd(int, uint16_t, const void *, off_t);
79 extern int fio_net_send_simple_cmd(int sk, uint16_t opcode, uint64_t serial);
80 extern void fio_server_set_arg(const char *);
81 extern int fio_server_parse_string(const char *, char **, int *, int *, struct in_addr *);
84 struct group_run_stats;
85 extern void fio_server_send_ts(struct thread_stat *, struct group_run_stats *);
86 extern void fio_server_send_gs(struct group_run_stats *);
87 extern void fio_server_send_status(void);
88 extern void fio_server_idle_loop(void);
90 extern int fio_clients_connect(void);
91 extern int fio_clients_send_ini(const char *);
92 extern int fio_handle_clients(void);
93 extern int fio_client_add(const char *, void **);
94 extern int fio_client_add_cmd_option(void *, const char *);
96 extern int fio_recv_data(int sk, void *p, unsigned int len);
97 extern int fio_send_data(int sk, const void *p, unsigned int len);
98 extern void fio_net_cmd_crc(struct fio_net_cmd *);
99 extern struct fio_net_cmd *fio_net_recv_cmd(int sk);
101 extern int exit_backend;
102 extern int fio_net_port;
104 static inline void fio_init_net_cmd(struct fio_net_cmd *cmd, uint16_t opcode,
105 const void *pdu, uint32_t pdu_len)
107 memset(cmd, 0, sizeof(*cmd));
109 cmd->version = __cpu_to_le16(FIO_SERVER_VER3);
110 cmd->opcode = cpu_to_le16(opcode);
113 cmd->pdu_len = cpu_to_le32(pdu_len);
114 memcpy(&cmd->payload, pdu, pdu_len);