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[/] [udp_ip_stack/] [trunk/] [rtl/] [vhdl/] [arp_types.vhd] - Rev 10

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--
--	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;
 

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