dhcp_client.hpp

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#include <hls_stream.h>
#include "ap_int.h"
 
using namespace hls;
 
 
 
struct DhcpMetaRep {    // DHCP meta-reply information
    ap_uint<32>     identifier;
    ap_uint<32>     assignedIpAddress;
    ap_uint<32>     serverAddress;
    ap_uint<8>      type;
};
 
struct DhcpMetaReq {    // DHCP meta-request information
    ap_uint<32>     identifier;
    ap_uint<8>      type;
    ap_uint<32>     requestedIpAddress;
 
    DhcpMetaReq() {}
    DhcpMetaReq(ap_uint<32> i, ap_uint<8> type) :
                    identifier(i), type(type), requestedIpAddress(0) {}
    DhcpMetaReq(ap_uint<32> i, ap_uint<8> type, ap_uint<32> ip) :
                    identifier(i), type(type), requestedIpAddress(ip) {}
};
 
 
 
enum DhcpOperationCode {    // Specifies the general type of message.
    DHCPDISCOVER    = 0x01, //  An odd  value indicates a request message.
    DHCPOFFER       = 0x02, //  An even value indicates a reply message.
    DHCPREQUEST     = 0x03,
    DHCPACK         = 0x05
};
 
 
 
static const ap_uint<32> MAGIC_COOKIE = 0x63538263;
 
#ifndef __SYNTHESIS__
    static const ap_uint<32> TIME_US  = 200;
    static const ap_uint<32> TIME_5S  = 100;
    static const ap_uint<32> TIME_30S = 300;
#else
    static const ap_uint<32> TIME_US  = 20000;
    static const ap_uint<32> TIME_5S  = 750750750;
    static const ap_uint<32> TIME_30S = 0xFFFFFFFF;
#endif
 
 
 
struct SocketAddr {
     ap_uint<16>    port;   // Port in network byte order
     ap_uint<32>    addr;   // IPv4 address
     SocketAddr()   {}
     SocketAddr(ap_uint<32> addr, ap_uint<16> port) :
                    addr(addr), port(port) {}
};
 
 
 
struct UdpWord {            // UDP Streaming Chunk (i.e. 8 bytes)
    ap_uint<64>    tdata;
    ap_uint<8>     tkeep;
    ap_uint<1>     tlast;
    UdpWord()      {}
    UdpWord(ap_uint<64> tdata, ap_uint<8> tkeep, ap_uint<1> tlast) :
                   tdata(tdata), tkeep(tkeep), tlast(tlast) {}
};
 
struct UdpMeta {            // UDP Socket Pair Association
    SocketAddr      src;    // Source socket address
    SocketAddr      dst;    // Destination socket address
    UdpMeta()       {}
    UdpMeta(SocketAddr src, SocketAddr dst) :
                    src(src), dst(dst) {}
};
 
typedef ap_uint<16> UdpPLen; // UDP Payload Length
 
typedef ap_uint<16> UdpPort; // UDP Port Number
 
 
 
 
typedef bool AxisAck;       // Acknowledgment over Axi4-Stream I/F
 
 
 
typedef ap_uint<1>  SigOpn; // Signal that the socket is open.
 
static const SigOpn SIG_OPEN = 1;
 
 
 
 
void dhcp_client(
 
        //------------------------------------------------------
        //-- MMIO / This / Config Interfaces
        //------------------------------------------------------
        ap_uint<1>          &piMMIO_This_Enable,
        ap_uint<48>         &piMMIO_This_MacAddress,
 
        //------------------------------------------------------
        //-- THIS / Nts  / IPv4 Interfaces
        //------------------------------------------------------
        ap_uint<32>         &poTHIS_Nts_IpAddress,
 
        //------------------------------------------------------
        //-- UDMX / This / Open-Port Interfaces
        //------------------------------------------------------
        stream<AxisAck>     &siUDMX_This_OpnAck,
        stream<UdpPort>     &soTHIS_Udmx_OpnReq,
 
        //------------------------------------------------------
        //-- UDMX / This / Data & MetaData Interfaces
        //------------------------------------------------------
        stream<UdpWord>     &siUDMX_This_Data,
        stream<UdpMeta>     &siUDMX_This_Meta,
        stream<UdpWord>     &soTHIS_Udmx_Data,
        stream<UdpMeta>     &soTHIS_Udmx_Meta,
        stream<UdpPLen>     &soTHIS_Udmx_PLen
);