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///////////////////////////////////////////////////////////////////////////////

// $Id: ethernet_parser.v 1976 2007-07-20 00:59:57Z grg $

//

// Module: ethernet_parser.v

// Project: NF2.1

// Description: parses the Ethernet header for a 32 or 64 bit datapath

//

///////////////////////////////////////////////////////////////////////////////

`timescale 1ns/1ps

  module ethernet_parser

    #(parameter DATA_WIDTH = 64,

      parameter CTRL_WIDTH=DATA_WIDTH/8,

      parameter NUM_IQ_BITS = 3,

      parameter INPUT_ARBITER_STAGE_NUM = 2

      )

   (// --- Interface to the previous stage

    input  [DATA_WIDTH-1:0]            in_data,

    input  [CTRL_WIDTH-1:0]            in_ctrl,

    input                              in_wr,

    // --- Interface to output_port_lookup

    output                             eth_done,

    output [NUM_IQ_BITS-1:0]           src_port,

    // --- Misc

    input                              reset,

    input                              clk

   );

   generate

   genvar i;

   if(DATA_WIDTH==64) begin: eth_parser_64bit

      ethernet_parser_64bit

        #(

          .NUM_IQ_BITS(NUM_IQ_BITS),

          .INPUT_ARBITER_STAGE_NUM(INPUT_ARBITER_STAGE_NUM))

         eth_parser

           (.in_data(in_data),

            .in_ctrl(in_ctrl),

            .in_wr(in_wr),

            .eth_done (eth_done),

            .src_port(src_port),

            .reset(reset),

            .clk(clk));

   end // block: eth_parser_64bit

   else if(DATA_WIDTH==32) begin: eth_parser_32bit

      ethernet_parser_32bit

        #(

          .NUM_IQ_BITS(NUM_IQ_BITS),

          .INPUT_ARBITER_STAGE_NUM(INPUT_ARBITER_STAGE_NUM))

         eth_parser

           (.in_data(in_data),

            .in_ctrl(in_ctrl),

            .in_wr(in_wr),

            .dst_mac (dst_mac),

            .src_mac(src_mac),

            .ethertype (ethertype),

            .eth_done (eth_done),

            .src_port(src_port),

            .reset(reset),

            .clk(clk));

   end // block: eth_parser_32bit

   endgenerate

endmodule // ethernet_parser_64bit