X-Git-Url: https://git.kernel.dk/?a=blobdiff_plain;f=server.h;h=61b61f35d4df1f9b4153ac6bb53829916206d7d8;hb=cdf54d85054858d9e3fc4d7ee8ea5c6a418f1b43;hp=aed61b2c0b7cf509756ae9f0c29a859c6dc50f38;hpb=009b1be41b32bf7e32b441c6a22e3ae628ec9b89;p=fio.git

diff --git a/server.h b/server.h
index aed61b2c..61b61f35 100644
--- a/server.h
+++ b/server.h
@@ -1,7 +1,139 @@
 #ifndef FIO_SERVER_H
 #define FIO_SERVER_H
 
-extern int fio_server(void);
+#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_ACK		= 4,
+	FIO_NET_CMD_NAK		= 5,
+	FIO_NET_CMD_TEXT	= 6,
+	FIO_NET_CMD_TS		= 7,
+	FIO_NET_CMD_GS		= 8,
+	FIO_NET_CMD_ETA		= 9,
+
+	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;
+};
+
+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