[fio.git] / server.h

#ifndef FIO_SERVER_H
#define FIO_SERVER_H

#include <inttypes.h>
#include <string.h>
#include <endian.h>

#include "stat.h"

/*
 * On-wire encoding is little endian
 */
struct fio_net_cmd {
	uint16_t version;	/* protocol version */
	uint16_t opcode;	/* command opcode */
	uint32_t flags;		/* modifier flags */
	uint64_t serial;	/* serial number */
	uint32_t pdu_len;	/* length of post-cmd layload */
	/*
	 * These must be immediately before the payload, anything before
	 * these fields are checksummed.
	 */
	uint16_t cmd_crc16;	/* cmd checksum */
	uint16_t pdu_crc16;	/* payload checksum */
	uint8_t payload[0];	/* payload */
};

enum {
	FIO_SERVER_VER		= 1,
	FIO_SERVER_VER1		= 1,

	FIO_SERVER_MAX_PDU	= 64,

	FIO_NET_CMD_QUIT	= 1,
	FIO_NET_CMD_EXIT	= 2,
	FIO_NET_CMD_JOB		= 3,
	FIO_NET_CMD_TEXT	= 4,
	FIO_NET_CMD_TS		= 5,
	FIO_NET_CMD_GS		= 6,
	FIO_NET_CMD_ETA		= 7,
	FIO_NET_CMD_PROBE	= 8,

	FIO_NET_CMD_F_MORE	= 1UL << 0,

	/* crc does not include the crc fields */
	FIO_NET_CMD_CRC_SZ	= sizeof(struct fio_net_cmd) -
					2 * sizeof(uint16_t),
};

struct cmd_ts_pdu {
	struct thread_stat ts;
	struct group_run_stats rs;
};

struct cmd_probe_pdu {
	uint8_t hostname[64];
	uint8_t fio_major;
	uint8_t fio_minor;
	uint8_t fio_patch;
};

extern int fio_start_server(int);
extern int fio_server_text_output(const char *, unsigned int len);
extern int fio_server_log(const char *format, ...);
extern int fio_net_send_cmd(int, uint16_t, const void *, off_t);
extern int fio_net_send_simple_cmd(int sk, uint16_t opcode, uint64_t serial);

struct thread_stat;
struct group_run_stats;
extern void fio_server_send_ts(struct thread_stat *, struct group_run_stats *);
extern void fio_server_send_gs(struct group_run_stats *);
extern void fio_server_send_status(void);
extern void fio_server_idle_loop(void);

extern int fio_clients_connect(void);
extern int fio_clients_send_ini(const char *);
extern int fio_handle_clients(void);
extern void fio_client_add(const char *);

extern int fio_recv_data(int sk, void *p, unsigned int len);
extern int fio_send_data(int sk, const void *p, unsigned int len);
extern void fio_net_cmd_crc(struct fio_net_cmd *);
extern struct fio_net_cmd *fio_net_recv_cmd(int sk);

extern int exit_backend;
extern int fio_net_port;

#if __BYTE_ORDER == __LITTLE_ENDIAN
#define __le16_to_cpu(x)		(x)
#define __le32_to_cpu(x)		(x)
#define __le64_to_cpu(x)		(x)
#define __cpu_to_le16(x)		(x)
#define __cpu_to_le32(x)		(x)
#define __cpu_to_le64(x)		(x)
#elif __BYTE_ORDER == __BIG_ENDIAN
#define __le16_to_cpu(x)		__bswap_16(x)
#define __le32_to_cpu(x)		__bswap_32(x)
#define __le64_to_cpu(x)		__bswap_64(x)
#define __cpu_to_le16(x)		__bswap_16(x)
#define __cpu_to_le32(x)		__bswap_32(x)
#define __cpu_to_le64(x)		__bswap_64(x)
#else
#error "Endianness not detected"
#endif

#define le16_to_cpu(val) ({			\
	uint16_t *__val = &(val);		\
	__le16_to_cpu(*__val);			\
})
#define le32_to_cpu(val) ({			\
	uint32_t *__val = &(val);		\
	__le32_to_cpu(*__val);			\
})
#define le64_to_cpu(val) ({			\
	uint64_t *__val = &(val);		\
	__le64_to_cpu(*__val);			\
})
#define cpu_to_le16(val) ({			\
	uint16_t *__val = &(val);		\
	__cpu_to_le16(*__val);			\
})
#define cpu_to_le32(val) ({			\
	uint32_t *__val = &(val);		\
	__cpu_to_le32(*__val);			\
})
#define cpu_to_le64(val) ({			\
	uint64_t *__val = &(val);		\
	__cpu_to_le64(*__val);			\
})

static inline void fio_init_net_cmd(struct fio_net_cmd *cmd, uint16_t opcode,
				    const void *pdu, uint32_t pdu_len)
{
	memset(cmd, 0, sizeof(*cmd));

	cmd->version	= __cpu_to_le16(FIO_SERVER_VER1);
	cmd->opcode	= cpu_to_le16(opcode);

	if (pdu) {
		cmd->pdu_len	= cpu_to_le32(pdu_len);
		memcpy(&cmd->payload, pdu, pdu_len);
	}
}

#endif
Commit	Line	Data
	1	#ifndef FIO_SERVER_H
	2	#define FIO_SERVER_H
	3
	4	#include <inttypes.h>
	5	#include <string.h>
	6	#include <endian.h>
	7
	8	#include "stat.h"
	9
	10	/*
	11	* On-wire encoding is little endian
	12	*/
	13	struct fio_net_cmd {
	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 */
	19	/*
	20	* These must be immediately before the payload, anything before
	21	* these fields are checksummed.
	22	*/
	23	uint16_t cmd_crc16; /* cmd checksum */
	24	uint16_t pdu_crc16; /* payload checksum */
	25	uint8_t payload[0]; /* payload */
	26	};
	27
	28	enum {
	29	FIO_SERVER_VER = 1,
	30	FIO_SERVER_VER1 = 1,
	31
	32	FIO_SERVER_MAX_PDU = 64,
	33
	34	FIO_NET_CMD_QUIT = 1,
	35	FIO_NET_CMD_EXIT = 2,
	36	FIO_NET_CMD_JOB = 3,
	37	FIO_NET_CMD_TEXT = 4,
	38	FIO_NET_CMD_TS = 5,
	39	FIO_NET_CMD_GS = 6,
	40	FIO_NET_CMD_ETA = 7,
	41	FIO_NET_CMD_PROBE = 8,
	42
	43	FIO_NET_CMD_F_MORE = 1UL << 0,
	44
	45	/* crc does not include the crc fields */
	46	FIO_NET_CMD_CRC_SZ = sizeof(struct fio_net_cmd) -
	47	2 * sizeof(uint16_t),
	48	};
	49
	50	struct cmd_ts_pdu {
	51	struct thread_stat ts;
	52	struct group_run_stats rs;
	53	};
	54
	55	struct cmd_probe_pdu {
	56	uint8_t hostname[64];
	57	uint8_t fio_major;
	58	uint8_t fio_minor;
	59	uint8_t fio_patch;
	60	};
	61
	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);
	67
	68	struct thread_stat;
	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);
	74
	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 *);
	79
	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);
	84
	85	extern int exit_backend;
	86	extern int fio_net_port;
	87
	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)
	102	#else
	103	#error "Endianness not detected"
	104	#endif
	105
	106	#define le16_to_cpu(val) ({ \
	107	uint16_t *__val = &(val); \
	108	__le16_to_cpu(*__val); \
	109	})
	110	#define le32_to_cpu(val) ({ \
	111	uint32_t *__val = &(val); \
	112	__le32_to_cpu(*__val); \
	113	})
	114	#define le64_to_cpu(val) ({ \
	115	uint64_t *__val = &(val); \
	116	__le64_to_cpu(*__val); \
	117	})
	118	#define cpu_to_le16(val) ({ \
	119	uint16_t *__val = &(val); \
	120	__cpu_to_le16(*__val); \
	121	})
	122	#define cpu_to_le32(val) ({ \
	123	uint32_t *__val = &(val); \
	124	__cpu_to_le32(*__val); \
	125	})
	126	#define cpu_to_le64(val) ({ \
	127	uint64_t *__val = &(val); \
	128	__cpu_to_le64(*__val); \
	129	})
	130
	131	static inline void fio_init_net_cmd(struct fio_net_cmd *cmd, uint16_t opcode,
	132	const void *pdu, uint32_t pdu_len)
	133	{
	134	memset(cmd, 0, sizeof(*cmd));
	135
	136	cmd->version = __cpu_to_le16(FIO_SERVER_VER1);
	137	cmd->opcode = cpu_to_le16(opcode);
	138
	139	if (pdu) {
	140	cmd->pdu_len = cpu_to_le32(pdu_len);
	141	memcpy(&cmd->payload, pdu, pdu_len);
	142	}
	143	}
	144
	145	#endif