Subversion Repositories ha1588

    ptp_l4    <= 1'b0;

    ptp_l4    <= 1'b0;

    ptp_event <= 1'b0;

    ptp_event <= 1'b0;

  end

  end

  else begin

  else begin

    // bypass vlan

    // bypass vlan

      bypass_vlan <= 1'b1;

      bypass_vlan <= 1'b1;

      bypass_vlan <= 1'b1;

      bypass_vlan <= 1'b1;

      bypass_vlan <= 1'b1;

      bypass_vlan <= 1'b1;

    else if (int_valid && bypass_vlan)

    else if (int_valid && bypass_vlan)

      bypass_vlan <= 1'b0;

      bypass_vlan <= 1'b0;

    // bypass mpls

    // bypass mpls

            (int_data[31:16]==16'h8847 || int_data[31:16]==16'h8848))  // ether_type == mpls

            (int_data[31:16]==16'h8847 || int_data[31:16]==16'h8848))  // ether_type == mpls

      bypass_mpls <= 1'b1;

      bypass_mpls <= 1'b1;

             int_data[24]==1'b0)  // bottom of label stack == 0

             int_data[24]==1'b0)  // bottom of label stack == 0

      bypass_mpls <= 1'b1;

      bypass_mpls <= 1'b1;

    else if (int_valid && bypass_mpls)

    else if (int_valid && bypass_mpls)

      bypass_mpls <= 1'b0;

      bypass_mpls <= 1'b0;

    // bypass ipv4

    // bypass ipv4

            (int_data[31:16]==16'h0800 || bypass_mpls) && int_data[15:12]==4'h4)  // ether_type == ipv4, ip_version == 4

            (int_data[31:16]==16'h0800 || bypass_mpls) && int_data[15:12]==4'h4)  // ether_type == ipv4, ip_version == 4

      bypass_ipv4 <= 1'b1;

      bypass_ipv4 <= 1'b1;

    else if (int_valid && bypass_ipv4_cnt==10'd4)

    else if (int_valid && bypass_ipv4_cnt==10'd4)

      bypass_ipv4 <= 1'b0;

      bypass_ipv4 <= 1'b0;

    // bypass ipv6

    // bypass ipv6

            (int_data[31:16]==16'h86dd || bypass_mpls) && int_data[15:12]==4'h6)  // ether_type == ipv6, ip_version == 6

            (int_data[31:16]==16'h86dd || bypass_mpls) && int_data[15:12]==4'h6)  // ether_type == ipv6, ip_version == 6

      bypass_ipv6 <= 1'b1;

      bypass_ipv6 <= 1'b1;

    else if (int_valid && bypass_ipv6_cnt==10'd9)

    else if (int_valid && bypass_ipv6_cnt==10'd9)

      bypass_ipv6 <= 1'b0;

      bypass_ipv6 <= 1'b0;

    if      (int_valid && bypass_ipv4_cnt==10'd1 && int_data[ 7: 0]== 8'h11)  // ipv4_protocol == udp

    if      (int_valid && bypass_ipv4_cnt==10'd1 && int_data[ 7: 0]== 8'h11)  // ipv4_protocol == udp

      found_udp <= 1'b1;

      found_udp <= 1'b1;

    else if (int_valid && bypass_ipv6_cnt==10'd1 && int_data[31:24]== 8'h11)  // ipv6_protocol == udp

    else if (int_valid && bypass_ipv6_cnt==10'd1 && int_data[31:24]== 8'h11)  // ipv6_protocol == udp

      found_udp <= 1'b1;

      found_udp <= 1'b1;

      bypass_udp <= 1'b1;

      bypass_udp <= 1'b1;

    else if (int_valid && bypass_udp_cnt==10'd2)

    else if (int_valid && bypass_udp_cnt==10'd2)

      bypass_udp <= 1'b0;

      bypass_udp <= 1'b0;

    // check if it is L2 PTP

    // check if it is L2 PTP

      ptp_l2 <= 1'b1;

      ptp_l2 <= 1'b1;

    // check if it is L4 PTP

    // check if it is L4 PTP

    if (int_valid && bypass_udp_cnt==10'd0 && bypass_udp &&

    if (int_valid && bypass_udp_cnt==10'd0 && bypass_udp &&

       (int_data[31:16]==16'h013f || int_data[31:16]==16'h0140))  // udp_dest_port == ptp_event || ptp_general

       (int_data[31:16]==16'h013f || int_data[31:16]==16'h0140))  // udp_dest_port == ptp_event || ptp_general

      ptp_l4 <= 1'b1;

      ptp_l4 <= 1'b1;

    // check if it is PTP Event message

    // check if it is PTP Event message

            (ptp_msgid_mask[int_data[11: 8]]))  // ptp_message_id == ptp_event

            (ptp_msgid_mask[int_data[11: 8]]))  // ptp_message_id == ptp_event

      ptp_event <= 1'b1;

      ptp_event <= 1'b1;

            (ptp_msgid_mask[int_data[11: 8]]))  // ptp_message_id == ptp_event 

            (ptp_msgid_mask[int_data[11: 8]]))  // ptp_message_id == ptp_event 

      ptp_event <= 1'b1;

      ptp_event <= 1'b1;

  end

  end

end

end