Subversion Repositories udp_ip_stack

--

--      Package File Template

--

--      Purpose: This package defines supplemental types, subtypes, 

--               constants, and functions 

--

--   To use any of the example code shown below, uncomment the lines and modify as necessary

--

-- Revision 0.02 - Added type definitions (store and network) for arpv2

library IEEE;

use IEEE.STD_LOGIC_1164.all;

package arp_types is

        -- arp lookup types

        type arp_req_req_type is

                record

                                lookup_req      : std_logic;                                                                    -- set high when wanting mac adr for the requested IP

                                ip                              : std_logic_vector (31 downto 0);

                end record;

        type arp_req_rslt_type is

                record

                                got_mac         : std_logic;                                                                    -- indicates that we got the mac

                                mac                     : std_logic_vector (47 downto 0);

                                got_err         : std_logic;                                                                    -- indicates that we got an error (prob a timeout)

                end record;

        type arp_entry_t is record

                ip                              : std_logic_vector (31 downto 0);

                mac                             : std_logic_vector (47 downto 0);

        end record;

        type arp_control_type is

                record

                                clear_cache     : std_logic;

                end record;

        -- arp store types

        type arp_store_rslt_t is (IDLE,BUSY,SEARCHING,FOUND,NOT_FOUND);

        type arp_store_rdrequest_t is

                record

                        req                             : std_logic;                                                            -- request to lookup

                        ip                                      : std_logic_vector(31 downto 0);         -- contains ip to lookup

                end record;

        type arp_store_wrrequest_t is

                record

                        req                             : std_logic;                                                            -- request to store

                        entry                           : arp_entry_t;                                                          -- ip,mac to store

                end record;

        type arp_store_result_t is

                record

                        status                  : arp_store_rslt_t;                                             -- status of the request

                        entry                           : arp_entry_t;                                                          -- contains ip,mac if found

                end record;

        -- arp network types

        type arp_nwk_rslt_t is (IDLE,REQUESTING,RECEIVED,ERROR);

        type arp_nwk_request_t is

                record

                        req                             : std_logic;                                                            -- request to resolve IP addr

                        ip                                      : std_logic_vector(31 downto 0);         -- IP to request

                end record;

        type arp_nwk_result_t is

                record

                        status                  : arp_nwk_rslt_t;                                                       -- status of request

                        entry                           : arp_entry_t;                                                          -- the result

                end record;

end arp_types;