13 * On-wire encoding is little endian
16 uint16_t version; /* protocol version */
17 uint16_t opcode; /* command opcode */
18 uint32_t flags; /* modifier flags */
19 uint64_t tag; /* passed back on reply */
20 uint32_t pdu_len; /* length of post-cmd layload */
22 * These must be immediately before the payload, anything before
23 * these fields are checksummed.
25 uint16_t cmd_crc16; /* cmd checksum */
26 uint16_t pdu_crc16; /* payload checksum */
27 uint8_t payload[0]; /* payload */
30 struct fio_net_int_cmd {
31 struct fio_net_cmd cmd;
32 struct flist_head list;
40 FIO_SERVER_MAX_PDU = 1024,
45 FIO_NET_CMD_JOBLINE = 4,
49 FIO_NET_CMD_SEND_ETA = 8,
51 FIO_NET_CMD_PROBE = 10,
52 FIO_NET_CMD_START = 11,
53 FIO_NET_CMD_STOP = 12,
57 FIO_NET_CMD_F_MORE = 1UL << 0,
59 /* crc does not include the crc fields */
60 FIO_NET_CMD_CRC_SZ = sizeof(struct fio_net_cmd) -
63 FIO_NET_CLIENT_TIMEOUT = 5000,
67 struct thread_stat ts;
68 struct group_run_stats rs;
72 struct disk_util_stat dus;
73 struct disk_util_agg agg;
76 struct cmd_probe_pdu {
87 struct cmd_single_line_pdu {
94 struct cmd_single_line_pdu options[0];
97 extern int fio_start_server(char *);
98 extern int fio_server_text_output(const char *, size_t);
99 extern int fio_server_log(const char *format, ...);
100 extern int fio_net_send_cmd(int, uint16_t, const void *, off_t, uint64_t);
101 extern int fio_net_send_simple_cmd(int, uint16_t, uint64_t, struct flist_head *);
102 extern void fio_server_set_arg(const char *);
103 extern int fio_server_parse_string(const char *, char **, int *, int *, struct in_addr *);
104 extern const char *fio_server_op(unsigned int);
105 extern void fio_server_got_signal(int);
108 struct group_run_stats;
109 extern void fio_server_send_ts(struct thread_stat *, struct group_run_stats *);
110 extern void fio_server_send_gs(struct group_run_stats *);
111 extern void fio_server_send_du(void);
112 extern void fio_server_idle_loop(void);
114 extern int fio_clients_connect(void);
115 extern int fio_clients_send_ini(const char *);
116 extern int fio_handle_clients(void);
117 extern int fio_client_add(const char *, void **);
118 extern void fio_client_add_cmd_option(void *, const char *);
120 extern int fio_recv_data(int sk, void *p, unsigned int len);
121 extern int fio_send_data(int sk, const void *p, unsigned int len);
122 extern void fio_net_cmd_crc(struct fio_net_cmd *);
123 extern struct fio_net_cmd *fio_net_recv_cmd(int sk);
125 extern int exit_backend;
126 extern int fio_net_port;
128 static inline void fio_init_net_cmd(struct fio_net_cmd *cmd, uint16_t opcode,
129 const void *pdu, uint32_t pdu_len,
132 memset(cmd, 0, sizeof(*cmd));
134 cmd->version = __cpu_to_le16(FIO_SERVER_VER);
135 cmd->opcode = cpu_to_le16(opcode);
136 cmd->tag = cpu_to_le64(tag);
139 cmd->pdu_len = cpu_to_le32(pdu_len);
140 memcpy(&cmd->payload, pdu, pdu_len);