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,
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 extern int fio_start_server(int);
56 extern int fio_server_text_output(const char *, unsigned int len);
57 extern int fio_server_log(const char *format, ...);
58 extern int fio_net_send_cmd(int, uint16_t, const void *, off_t);
61 struct group_run_stats;
62 extern void fio_server_send_ts(struct thread_stat *, struct group_run_stats *);
63 extern void fio_server_send_gs(struct group_run_stats *);
65 extern int fio_clients_connect(void);
66 extern int fio_clients_send_ini(const char *);
67 extern int fio_handle_clients(void);
68 extern void fio_client_add(const char *);
70 extern int fio_recv_data(int sk, void *p, unsigned int len);
71 extern int fio_send_data(int sk, const void *p, unsigned int len);
72 extern void fio_net_cmd_crc(struct fio_net_cmd *);
73 extern struct fio_net_cmd *fio_net_recv_cmd(int sk);
75 extern int exit_backend;
76 extern int fio_net_port;
78 #if __BYTE_ORDER == __LITTLE_ENDIAN
79 #define le16_to_cpu(x) (x)
80 #define le32_to_cpu(x) (x)
81 #define le64_to_cpu(x) (x)
82 #define cpu_to_le16(x) (x)
83 #define cpu_to_le32(x) (x)
84 #define cpu_to_le64(x) (x)
85 #elif __BYTE_ORDER == __BIG_ENDIAN
86 #define le16_to_cpu(x) __bswap_16(x)
87 #define le32_to_cpu(x) __bswap_32(x)
88 #define le64_to_cpu(x) __bswap_64(x)
89 #define cpu_to_le16(x) __bswap_16(x)
90 #define cpu_to_le32(x) __bswap_32(x)
91 #define cpu_to_le64(x) __bswap_64(x)
93 #error "Endianness not detected"
96 static inline void fio_init_net_cmd(struct fio_net_cmd *cmd, uint16_t opcode,
97 const void *pdu, uint32_t pdu_len)
99 memset(cmd, 0, sizeof(*cmd));
101 cmd->version = cpu_to_le16(FIO_SERVER_VER1);
102 cmd->opcode = cpu_to_le16(opcode);
105 cmd->pdu_len = cpu_to_le32(pdu_len);
106 memcpy(&cmd->payload, pdu, pdu_len);