X-Git-Url: https://git.kernel.dk/?a=blobdiff_plain;f=server.h;h=8e6852a528c22b3ec63bb6cf0a466c85a59c426e;hb=82a4be1bcef4228233e61b0b034ad6eb78a7558c;hp=879faaba31f3a3a2093b5fe0b4a94d3505df9410;hpb=50d16976ac0cd44c1f5aba9217148ff05e141436;p=fio.git

diff --git a/server.h b/server.h
index 879faaba..8e6852a5 100644
--- a/server.h
+++ b/server.h
@@ -1,6 +1,91 @@
 #ifndef FIO_SERVER_H
 #define FIO_SERVER_H
 
+#include <inttypes.h>
+#include <string.h>
+#include <endian.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 */
+	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_JOB		= 2,
+	FIO_NET_CMD_ACK		= 3,
+	FIO_NET_CMD_NAK		= 4,
+	FIO_NET_CMD_TEXT	= 5,
+
+	FIO_NET_CMD_F_MORE	= 1,
+
+	/* crc does not include the crc fields */
+	FIO_NET_CMD_CRC_SZ	= sizeof(struct fio_net_cmd) -
+					2 * sizeof(uint16_t),
+};
+
 extern int fio_server(void);
+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 char *, off_t);
+
+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_cmd_read(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
+
+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