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,
41 FIO_NET_CMD_PROBE = 8,
43 FIO_NET_CMD_F_MORE = 1UL << 0,
45 /* crc does not include the crc fields */
46 FIO_NET_CMD_CRC_SZ = sizeof(struct fio_net_cmd) -
51 struct thread_stat ts;
52 struct group_run_stats rs;
55 struct cmd_probe_pdu {
62 extern int fio_start_server(int);
63 extern int fio_server_text_output(const char *, unsigned int len);
64 extern int fio_server_log(const char *format, ...);
65 extern int fio_net_send_cmd(int, uint16_t, const void *, off_t);
66 extern int fio_net_send_simple_cmd(int sk, uint16_t opcode, uint64_t serial);
69 struct group_run_stats;
70 extern void fio_server_send_ts(struct thread_stat *, struct group_run_stats *);
71 extern void fio_server_send_gs(struct group_run_stats *);
72 extern void fio_server_send_status(void);
73 extern void fio_server_idle_loop(void);
75 extern int fio_clients_connect(void);
76 extern int fio_clients_send_ini(const char *);
77 extern int fio_handle_clients(void);
78 extern void fio_client_add(const char *);
80 extern int fio_recv_data(int sk, void *p, unsigned int len);
81 extern int fio_send_data(int sk, const void *p, unsigned int len);
82 extern void fio_net_cmd_crc(struct fio_net_cmd *);
83 extern struct fio_net_cmd *fio_net_recv_cmd(int sk, int block);
85 extern int exit_backend;
86 extern int fio_net_port;
88 #if __BYTE_ORDER == __LITTLE_ENDIAN
89 #define __le16_to_cpu(x) (x)
90 #define __le32_to_cpu(x) (x)
91 #define __le64_to_cpu(x) (x)
92 #define __cpu_to_le16(x) (x)
93 #define __cpu_to_le32(x) (x)
94 #define __cpu_to_le64(x) (x)
95 #elif __BYTE_ORDER == __BIG_ENDIAN
96 #define __le16_to_cpu(x) __bswap_16(x)
97 #define __le32_to_cpu(x) __bswap_32(x)
98 #define __le64_to_cpu(x) __bswap_64(x)
99 #define __cpu_to_le16(x) __bswap_16(x)
100 #define __cpu_to_le32(x) __bswap_32(x)
101 #define __cpu_to_le64(x) __bswap_64(x)
103 #error "Endianness not detected"
106 #define le16_to_cpu(val) ({ \
107 uint16_t *__val = &(val); \
108 __le16_to_cpu(*__val); \
110 #define le32_to_cpu(val) ({ \
111 uint32_t *__val = &(val); \
112 __le32_to_cpu(*__val); \
114 #define le64_to_cpu(val) ({ \
115 uint64_t *__val = &(val); \
116 __le64_to_cpu(*__val); \
118 #define cpu_to_le16(val) ({ \
119 uint16_t *__val = &(val); \
120 __cpu_to_le16(*__val); \
122 #define cpu_to_le32(val) ({ \
123 uint32_t *__val = &(val); \
124 __cpu_to_le32(*__val); \
126 #define cpu_to_le64(val) ({ \
127 uint64_t *__val = &(val); \
128 __cpu_to_le64(*__val); \
131 static inline void fio_init_net_cmd(struct fio_net_cmd *cmd, uint16_t opcode,
132 const void *pdu, uint32_t pdu_len)
134 memset(cmd, 0, sizeof(*cmd));
136 cmd->version = __cpu_to_le16(FIO_SERVER_VER1);
137 cmd->opcode = cpu_to_le16(opcode);
140 cmd->pdu_len = cpu_to_le32(pdu_len);
141 memcpy(&cmd->payload, pdu, pdu_len);