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 = 64,
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 {
69 uint8_t argv[FIO_NET_CMD_JOBLINE_ARGV][64];
72 extern int fio_start_server(int);
73 extern int fio_server_text_output(const char *, unsigned int len);
74 extern int fio_server_log(const char *format, ...);
75 extern int fio_net_send_cmd(int, uint16_t, const void *, off_t);
76 extern int fio_net_send_simple_cmd(int sk, uint16_t opcode, uint64_t serial);
79 struct group_run_stats;
80 extern void fio_server_send_ts(struct thread_stat *, struct group_run_stats *);
81 extern void fio_server_send_gs(struct group_run_stats *);
82 extern void fio_server_send_status(void);
83 extern void fio_server_idle_loop(void);
85 extern int fio_clients_connect(void);
86 extern int fio_clients_send_ini(const char *);
87 extern int fio_handle_clients(void);
88 extern void fio_client_add(const char *);
89 extern void fio_client_add_cmd_option(const char *, const char *);
91 extern int fio_recv_data(int sk, void *p, unsigned int len);
92 extern int fio_send_data(int sk, const void *p, unsigned int len);
93 extern void fio_net_cmd_crc(struct fio_net_cmd *);
94 extern struct fio_net_cmd *fio_net_recv_cmd(int sk, int block);
96 extern int exit_backend;
97 extern int fio_net_port;
99 #ifdef FIO_LITTLE_ENDIAN
100 #define __le16_to_cpu(x) (x)
101 #define __le32_to_cpu(x) (x)
102 #define __le64_to_cpu(x) (x)
103 #define __cpu_to_le16(x) (x)
104 #define __cpu_to_le32(x) (x)
105 #define __cpu_to_le64(x) (x)
107 #define __le16_to_cpu(x) fio_swap16(x)
108 #define __le32_to_cpu(x) fio_swap_2(x)
109 #define __le64_to_cpu(x) fio_swap64(x)
110 #define __cpu_to_le16(x) fio_swap16(x)
111 #define __cpu_to_le32(x) fio_swap32(x)
112 #define __cpu_to_le64(x) fio_swap64(x)
115 #define le16_to_cpu(val) ({ \
116 uint16_t *__val = &(val); \
117 __le16_to_cpu(*__val); \
119 #define le32_to_cpu(val) ({ \
120 uint32_t *__val = &(val); \
121 __le32_to_cpu(*__val); \
123 #define le64_to_cpu(val) ({ \
124 uint64_t *__val = &(val); \
125 __le64_to_cpu(*__val); \
127 #define cpu_to_le16(val) ({ \
128 uint16_t *__val = &(val); \
129 __cpu_to_le16(*__val); \
131 #define cpu_to_le32(val) ({ \
132 uint32_t *__val = &(val); \
133 __cpu_to_le32(*__val); \
135 #define cpu_to_le64(val) ({ \
136 uint64_t *__val = &(val); \
137 __cpu_to_le64(*__val); \
140 static inline void fio_init_net_cmd(struct fio_net_cmd *cmd, uint16_t opcode,
141 const void *pdu, uint32_t pdu_len)
143 memset(cmd, 0, sizeof(*cmd));
145 cmd->version = __cpu_to_le16(FIO_SERVER_VER1);
146 cmd->opcode = cpu_to_le16(opcode);
149 cmd->pdu_len = cpu_to_le32(pdu_len);
150 memcpy(&cmd->payload, pdu, pdu_len);