AxisIcmp.hpp

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#ifndef _AXIS_ICMP_H_
#define _AXIS_ICMP_H_
 
#include "./AxisRaw.hpp"
 
 
#define ICMP_HEADER_LEN     8       // In bytes
 
 
typedef ap_uint< 8> LE_IcmpType;    // ICMP Type of control Message
typedef ap_uint< 8> LE_IcmpCode;    // ICMP subtype of control Message
typedef ap_uint<16> LE_IcmpCsum;    // ICMP header and data Checksum
 
 
typedef ap_uint< 8> IcmpType;       // ICMP Type of control Message
typedef ap_uint< 8> IcmpCode;       // ICMP subtype of control Message
typedef ap_uint<16> IcmpCsum;       // ICMP header and data Checksum
typedef ap_uint<16> IcmpIdent;      // ICMP identifier
typedef ap_uint<16> IcmpSeqNum;     // ICMP sequence number
 
 
 
class AxisIcmp: public AxisRaw {
 
  public:
    AxisIcmp() {}
    AxisIcmp(AxisRaw axisRaw) :
        AxisRaw(axisRaw.getLE_TData(), axisRaw.getLE_TKeep(), axisRaw.getLE_TLast()) {}
    AxisIcmp(LE_tData tdata, LE_tKeep tkeep, LE_tLast tlast) :
        AxisRaw(tdata, tkeep, tlast) {}
    AxisIcmp(const AxisIcmp &axisIcmp) :
        AxisRaw(axisIcmp.tdata, axisIcmp.tkeep, axisIcmp.tlast) {}
 
 
    // Set-Get the message Type field
    void          setIcmpType(IcmpType type)         {                    tdata.range( 7,  0) = type;            }
    IcmpType      getIcmpType()                      {             return tdata.range( 7,  0);                   }
    // Set-Get the message Code field
    void          setIcmpCode(IcmpCode code)         {                    tdata.range(15,  8) = code;            }
    IcmpCode      getIcmpCode()                      {             return tdata.range(15,  8);                   }
    // Set-Get the Checksum field
    void          setIcmpCsum(IcmpCsum csum)         {                    tdata.range(31, 16) = swapWord(csum);  }
    IcmpCsum      getIcmpCsum()                      {   return swapWord (tdata.range(31, 16));                  }
    // Set-Get the Identifier field
    void          setIcmpIdent(IcmpIdent id)         {                    tdata.range(47, 32) = swapWord(id);    }
    IcmpIdent     getIcmpIdent()                     {   return swapWord (tdata.range(47, 32));                  }
    // Set-Get the Sequence Number field
    void          setIcmpSeqNum(IcmpSeqNum num)      {                    tdata.range(63, 48) = swapWord(num);   }
    IcmpSeqNum    getIcmpSeqNum()                    {   return swapWord (tdata.range(63, 48));                  }
 
  private:
    // Swap the two bytes of a word (.i.e, 16 bits)
    ap_uint<16> swapWord(ap_uint<16> inpWord) {
      return (inpWord.range(7,0), inpWord.range(15, 8));
    }
    // Swap the four bytes of a double-word (.i.e, 32 bits)
    ap_uint<32> swapDWord(ap_uint<32> inpDWord) {
      return (inpDWord.range( 7, 0), inpDWord.range(15,  8),
              inpDWord.range(23,16), inpDWord.range(31, 24));
    }
 
}; // End of: AxisArp
 
#endif