#pragma once

#include <cstdint>
#include <cstdio>

static constexpr int CTRL_SYNC = 0x1234;
static constexpr int CTRL_ACK = 0x2345;
static constexpr int CTRL_START = 0x5678;
static constexpr int CTRL_STOP = 0x3456;
static constexpr int CTRL_STAT = 0x4567;

static constexpr int DSMBR_MSG_MAX_DATA = 16;
struct  __attribute__((packed)) dsmbr_ctrl_msg {
    uint32_t code;
    uint64_t data[DSMBR_MSG_MAX_DATA];
};


int 
dsmbr_send_ctrl_msg(int sockfd, struct dsmbr_ctrl_msg * msg);

int
dsmbr_recv_ctrl_msg(int sockfd, struct dsmbr_ctrl_msg * msg);