12 * On-wire encoding is little endian
15 uint16_t version; /* protocol version */
16 uint16_t opcode; /* command opcode */
17 uint32_t flags; /* modifier flags */
18 uint64_t tag; /* passed back on reply */
19 uint32_t pdu_len; /* length of post-cmd layload */
21 * These must be immediately before the payload, anything before
22 * these fields are checksummed.
24 uint16_t cmd_crc16; /* cmd checksum */
25 uint16_t pdu_crc16; /* payload checksum */
26 uint8_t payload[0]; /* payload */
29 struct fio_net_int_cmd {
30 struct fio_net_cmd cmd;
31 struct flist_head list;
39 FIO_SERVER_MAX_PDU = 1024,
44 FIO_NET_CMD_JOBLINE = 4,
48 FIO_NET_CMD_SEND_ETA = 8,
50 FIO_NET_CMD_PROBE = 10,
51 FIO_NET_CMD_START = 11,
52 FIO_NET_CMD_STOP = 12,
55 FIO_NET_CMD_F_MORE = 1UL << 0,
57 /* crc does not include the crc fields */
58 FIO_NET_CMD_CRC_SZ = sizeof(struct fio_net_cmd) -
61 FIO_NET_CLIENT_TIMEOUT = 5000,
65 struct thread_stat ts;
66 struct group_run_stats rs;
69 struct cmd_probe_pdu {
80 struct cmd_single_line_pdu {
87 struct cmd_single_line_pdu options[0];
90 extern int fio_start_server(char *);
91 extern int fio_server_text_output(const char *, size_t);
92 extern int fio_server_log(const char *format, ...);
93 extern int fio_net_send_cmd(int, uint16_t, const void *, off_t, uint64_t);
94 extern int fio_net_send_simple_cmd(int, uint16_t, uint64_t, struct flist_head *);
95 extern void fio_server_set_arg(const char *);
96 extern int fio_server_parse_string(const char *, char **, int *, int *, struct in_addr *);
97 extern const char *fio_server_op(unsigned int);
98 extern void fio_server_got_signal(int);
101 struct group_run_stats;
102 extern void fio_server_send_ts(struct thread_stat *, struct group_run_stats *);
103 extern void fio_server_send_gs(struct group_run_stats *);
104 extern void fio_server_idle_loop(void);
106 extern int fio_clients_connect(void);
107 extern int fio_clients_send_ini(const char *);
108 extern int fio_handle_clients(void);
109 extern int fio_client_add(const char *, void **);
110 extern void fio_client_add_cmd_option(void *, const char *);
112 extern int fio_recv_data(int sk, void *p, unsigned int len);
113 extern int fio_send_data(int sk, const void *p, unsigned int len);
114 extern void fio_net_cmd_crc(struct fio_net_cmd *);
115 extern struct fio_net_cmd *fio_net_recv_cmd(int sk);
117 extern int exit_backend;
118 extern int fio_net_port;
120 static inline void fio_init_net_cmd(struct fio_net_cmd *cmd, uint16_t opcode,
121 const void *pdu, uint32_t pdu_len,
124 memset(cmd, 0, sizeof(*cmd));
126 cmd->version = __cpu_to_le16(FIO_SERVER_VER);
127 cmd->opcode = cpu_to_le16(opcode);
128 cmd->tag = cpu_to_le64(tag);
131 cmd->pdu_len = cpu_to_le32(pdu_len);
132 memcpy(&cmd->payload, pdu, pdu_len);