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/arpv2_tb.vhd
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--------------------------------------------------------------------------------
-- Company:
-- Engineer:
--
-- Create Date: 12:35:50 05/31/2011
-- Design Name:
-- Module Name: C:/Users/pjf/Documents/projects/fpga/xilinx/Network/arp1/arp_tb.vhd
-- Project Name: arp1
-- Target Device:
-- Tool versions:
-- Description:
--
-- VHDL Test Bench Created by ISE for module: arp
--
-- Dependencies:
--
-- Revision:
-- Revision 0.01 - File Created
-- Revision 0.02 - Added tests for ARP timeout
-- Additional Comments:
--
-- Notes:
-- This testbench has been automatically generated using types std_logic and
-- std_logic_vector for the ports of the unit under test. Xilinx recommends
-- that these types always be used for the top-level I/O of a design in order
-- to guarantee that the testbench will bind correctly to the post-implementation
-- simulation model.
--------------------------------------------------------------------------------
LIBRARY ieee;
USE ieee.std_logic_1164.ALL;
USE ieee.numeric_std.ALL;
use work.arp_types.all;
ENTITY arpv2_tb IS
END arpv2_tb;
ARCHITECTURE behavior OF arpv2_tb IS
-- Component Declaration for the Unit Under Test (UUT)
COMPONENT arpv2
generic (
CLOCK_FREQ : integer := 125000000; -- freq of data_in_clk -- needed to timout cntr
ARP_TIMEOUT : integer := 60; -- ARP response timeout (s)
MAX_ARP_ENTRIES : integer := 255 -- max entries in the arp store
);
Port (
-- lookup request signals
arp_req_req : in arp_req_req_type;
arp_req_rslt : out arp_req_rslt_type;
-- MAC layer RX signals
data_in_clk : in STD_LOGIC;
reset : in STD_LOGIC;
data_in : in STD_LOGIC_VECTOR (7 downto 0); -- ethernet frame (from dst mac addr through to last byte of frame)
data_in_valid : in STD_LOGIC; -- indicates data_in valid on clock
data_in_last : in STD_LOGIC; -- indicates last data in frame
-- MAC layer TX signals
mac_tx_req : out std_logic; -- indicates that ip wants access to channel (stays up for as long as tx)
mac_tx_granted : in std_logic; -- indicates that access to channel has been granted
data_out_clk : in std_logic;
data_out_ready : in std_logic; -- indicates system ready to consume data
data_out_valid : out std_logic; -- indicates data out is valid
data_out_first : out std_logic; -- with data out valid indicates the first byte of a frame
data_out_last : out std_logic; -- with data out valid indicates the last byte of a frame
data_out : out std_logic_vector (7 downto 0); -- ethernet frame (from dst mac addr through to last byte of frame)
-- system signals
our_mac_address : in STD_LOGIC_VECTOR (47 downto 0);
our_ip_address : in STD_LOGIC_VECTOR (31 downto 0);
control : in arp_control_type;
req_count : out STD_LOGIC_VECTOR(7 downto 0) -- count of arp pkts received
);
END COMPONENT;
 
--Inputs
signal clk : std_logic := '0';
signal reset : std_logic := '0';
signal data_in : std_logic_vector(7 downto 0) := (others => '0');
signal data_in_valid : std_logic := '0';
signal data_in_last : std_logic := '0';
signal our_mac_address : std_logic_vector(47 downto 0) := (others => '0');
signal our_ip_address : std_logic_vector(31 downto 0) := (others => '0');
signal data_out_ready : std_logic;
signal data_out_valid : std_logic;
signal data_out_first : std_logic;
signal data_out_last : std_logic;
signal data_out : std_logic_vector (7 downto 0);
signal req_count : STD_LOGIC_VECTOR(7 downto 0);
signal arp_req_req : arp_req_req_type;
signal arp_req_rslt : arp_req_rslt_type;
signal mac_tx_req : std_logic;
signal mac_tx_granted : std_logic;
signal control : arp_control_type;
 
-- Clock period definitions
constant clk_period : time := 8 ns;
BEGIN
-- Instantiate the Unit Under Test (UUT)
uut: arpv2
generic map (
CLOCK_FREQ => 10, -- artificially low count to enable pragmatic testing
ARP_TIMEOUT => 20
)
PORT MAP (
-- lookup request mappings
arp_req_req => arp_req_req,
arp_req_rslt => arp_req_rslt,
-- rx mappings
data_in_clk => clk,
reset => reset,
data_in => data_in,
data_in_valid => data_in_valid,
data_in_last => data_in_last,
-- tx mappings
mac_tx_req => mac_tx_req,
mac_tx_granted => mac_tx_granted,
data_out_clk => clk,
data_out_ready => data_out_ready,
data_out_valid => data_out_valid,
data_out_first => data_out_first,
data_out_last => data_out_last,
data_out => data_out,
-- system mappings
our_mac_address => our_mac_address,
our_ip_address => our_ip_address,
control => control,
req_count => req_count
);
 
-- Clock process definitions
clk_process :process
begin
clk <= '0';
wait for clk_period/2;
clk <= '1';
wait for clk_period/2;
end process;
 
-- Stimulus process
stim_proc: process
begin
-- hold reset state for 100 ns.
wait for 100 ns;
 
our_ip_address <= x"c0a80509"; -- 192.168.5.9
our_mac_address <= x"002320212223";
mac_tx_granted <= '1'; -- FIXME 0
control.clear_cache <= '0';
 
reset <= '1';
wait for clk_period*10;
reset <= '0';
wait for clk_period*5;
assert mac_tx_req = '0' report "mac_tx_req asserted on reset";
 
-- insert stimulus here
arp_req_req.lookup_req <= '0';
arp_req_req.ip <= (others => '0');
data_out_ready <= '1';
 
report "T1: Send an ARP request: who has 192.168.5.9? Tell 192.168.5.1";
data_in_valid <= '1';
-- dst MAC (bc)
data_in <= x"ff"; wait for clk_period;
data_in <= x"ff"; wait for clk_period;
data_in <= x"ff"; wait for clk_period;
data_in <= x"ff"; wait for clk_period;
data_in <= x"ff"; wait for clk_period;
data_in <= x"ff"; wait for clk_period;
-- src MAC
data_in <= x"00"; wait for clk_period;
data_in <= x"23"; wait for clk_period;
data_in <= x"18"; wait for clk_period;
data_in <= x"29"; wait for clk_period;
data_in <= x"26"; wait for clk_period;
data_in <= x"7c"; wait for clk_period;
-- type
data_in <= x"08"; wait for clk_period;
data_in <= x"06"; wait for clk_period;
-- HW type
data_in <= x"00"; wait for clk_period;
data_in <= x"01"; wait for clk_period;
-- Protocol type
data_in <= x"08"; wait for clk_period;
data_in <= x"00"; wait for clk_period;
-- HW size
data_in <= x"06"; wait for clk_period;
-- protocol size
data_in <= x"04"; wait for clk_period;
-- Opcode
data_in <= x"00"; wait for clk_period;
data_in <= x"01"; wait for clk_period;
-- Sender MAC
data_in <= x"00"; wait for clk_period;
data_in <= x"23"; wait for clk_period;
data_in <= x"18"; wait for clk_period;
data_in <= x"29"; wait for clk_period;
data_in <= x"26"; wait for clk_period;
data_in <= x"7c"; wait for clk_period;
-- Sender IP
data_in <= x"c0"; wait for clk_period;
data_in <= x"a8"; wait for clk_period;
data_in <= x"05"; wait for clk_period;
data_in <= x"01"; wait for clk_period;
-- Target MAC
data_in <= x"00"; wait for clk_period;
data_in <= x"00"; wait for clk_period;
data_in <= x"00"; wait for clk_period;
data_in <= x"00"; wait for clk_period;
data_in <= x"00"; wait for clk_period;
data_in <= x"00"; wait for clk_period;
-- Target IP
data_in <= x"c0"; wait for clk_period;
data_in <= x"a8"; wait for clk_period;
data_in <= x"05"; wait for clk_period;
data_in <= x"09"; wait for clk_period;
data_in <= x"00"; wait for clk_period;
data_in <= x"00"; wait for clk_period;
data_in <= x"00"; wait for clk_period;
data_in_last <= '1';
data_in <= x"00"; wait for clk_period;
data_in_last <= '0';
data_in_valid <= '0';
 
report "T1: Expect that we send an 'I have 192.168.5.9' msg";
-- check tx arbitration signals
 
report "T1: waiting for tx req";
wait until mac_tx_req = '1';
-- ready to tx
data_out_ready <= '1';
mac_tx_granted <= '1';
report "T1: waiting for data_out_valid";
wait until data_out_valid = '1';
report "T1: got data_out_valid";
wait for clk_period*10;
data_out_ready <= '0';
wait for clk_period*2;
data_out_ready <= '1';
wait for clk_period*12;
assert data_out = x"02" report "T1: expected opcode = 02 for reply 'I have'";
-- expect our mac 00 23 20 21 22 23
wait for clk_period;
assert data_out = x"00" report "T1: incorrect our mac.0";
wait for clk_period;
assert data_out = x"23" report "T1: incorrect our mac.1";
wait for clk_period;
assert data_out = x"20" report "T1: incorrect our mac.2";
wait for clk_period;
assert data_out = x"21" report "T1: incorrect our mac.3";
wait for clk_period;
assert data_out = x"22" report "T1: incorrect our mac.4";
wait for clk_period;
assert data_out = x"23" report "T1: incorrect our mac.5";
-- expect our IP c0 a8 05 05
wait for clk_period;
assert data_out = x"c0" report "T1: incorrect our IP.0";
wait for clk_period;
assert data_out = x"a8" report "T1: incorrect our IP.1";
wait for clk_period;
assert data_out = x"05" report "T1: incorrect our IP.2";
wait for clk_period;
assert data_out = x"09" report "T1: incorrect our IP.3";
 
-- expect target mac 00 23 18 29 26 7c
wait for clk_period;
assert data_out = x"00" report "T1: incorrect target mac.0";
wait for clk_period;
assert data_out = x"23" report "T1: incorrect target mac.1";
wait for clk_period;
assert data_out = x"18" report "T1: incorrect target mac.2";
wait for clk_period;
assert data_out = x"29" report "T1: incorrect target mac.3";
wait for clk_period;
assert data_out = x"26" report "T1: incorrect target mac.4";
wait for clk_period;
assert data_out = x"7c" report "T1: incorrect target mac.5";
-- expect target IP c0 a8 05 01
wait for clk_period;
assert data_out = x"c0" report "T1: incorrect target IP.0";
wait for clk_period;
assert data_out = x"a8" report "T1: incorrect target IP.1";
wait for clk_period;
assert data_out = x"05" report "T1: incorrect target IP.2";
assert data_out_last = '0' report "T1: data out last incorrectly set on target IP.2 byte";
wait for clk_period;
assert data_out = x"01" report "T1: incorrect target IP.3";
assert data_out_last = '1' report "T1: data out last should be set";
wait for clk_period*10;
report "T2: Send another ARP request: who has 192.168.5.8? Tell 192.168.5.1, holding off transmitter";
data_out_ready <= '0';
data_in_valid <= '1';
-- dst MAC (bc)
data_in <= x"ff"; wait for clk_period;
data_in <= x"ff"; wait for clk_period;
data_in <= x"ff"; wait for clk_period;
data_in <= x"ff"; wait for clk_period;
data_in <= x"ff"; wait for clk_period;
data_in <= x"ff"; wait for clk_period;
-- src MAC
data_in <= x"00"; wait for clk_period;
data_in <= x"23"; wait for clk_period;
data_in <= x"18"; wait for clk_period;
data_in <= x"29"; wait for clk_period;
data_in <= x"26"; wait for clk_period;
data_in <= x"7c"; wait for clk_period;
-- type
data_in <= x"08"; wait for clk_period;
data_in <= x"06"; wait for clk_period;
-- HW type
data_in <= x"00"; wait for clk_period;
data_in <= x"01"; wait for clk_period;
-- Protocol type
data_in <= x"08"; wait for clk_period;
data_in <= x"00"; wait for clk_period;
-- HW size
data_in <= x"06"; wait for clk_period;
-- protocol size
data_in <= x"04"; wait for clk_period;
-- Opcode
data_in <= x"00"; wait for clk_period;
data_in <= x"01"; wait for clk_period;
-- Sender MAC
data_in <= x"00"; wait for clk_period;
data_in <= x"23"; wait for clk_period;
data_in <= x"18"; wait for clk_period;
data_in <= x"29"; wait for clk_period;
data_in <= x"26"; wait for clk_period;
data_in <= x"7c"; wait for clk_period;
-- Sender IP
data_in <= x"c0"; wait for clk_period;
data_in <= x"a8"; wait for clk_period;
data_in <= x"05"; wait for clk_period;
data_in <= x"01"; wait for clk_period;
-- Target MAC
data_in <= x"00"; wait for clk_period;
data_in <= x"00"; wait for clk_period;
data_in <= x"00"; wait for clk_period;
data_in <= x"00"; wait for clk_period;
data_in <= x"00"; wait for clk_period;
data_in <= x"00"; wait for clk_period;
-- Target IP
data_in <= x"c0"; wait for clk_period;
data_in <= x"a8"; wait for clk_period;
data_in <= x"05"; wait for clk_period;
data_in <= x"09"; wait for clk_period;
data_in <= x"00"; wait for clk_period;
data_in <= x"00"; wait for clk_period;
data_in <= x"00"; wait for clk_period;
data_in_last <= '1';
data_in <= x"00"; wait for clk_period;
data_in_last <= '0';
data_in_valid <= '0';
-- ready to tx
wait for clk_period*10;
data_out_ready <= '1';
wait for clk_period*50;
 
report "T3: Send a request for the IP that is already in the store";
arp_req_req.ip <= x"c0a80501";
arp_req_req.lookup_req <= '1';
wait for clk_period;
arp_req_req.lookup_req <= '0';
report "T3: wait for reply from store";
wait until arp_req_rslt.got_mac = '1' or arp_req_rslt.got_err = '1';
assert arp_req_rslt.got_mac = '1' report "T3: expected got mac";
assert arp_req_rslt.got_err = '0' report "T3: expected got err = 0";
assert arp_req_rslt.mac = x"00231829267c" report "T3: wrong mac value";
wait for clk_period*2;
-- the entry that was in the store should now be in the cache - check it
report "T4: Send a request for the IP that is already in the cache";
arp_req_req.ip <= x"c0a80501";
arp_req_req.lookup_req <= '1';
wait for clk_period;
arp_req_req.lookup_req <= '0';
assert arp_req_rslt.got_mac = '1' report "T4: expected got mac";
assert arp_req_rslt.got_err = '0' report "T4: expected got err = 0";
assert arp_req_rslt.mac = x"00231829267c" report "T4: wrong mac value";
wait for clk_period*50;
report "T5 - Send a request for the IP that is not cached or in the store";
arp_req_req.ip <= x"c0a80503";
arp_req_req.lookup_req <= '1';
wait for clk_period;
arp_req_req.lookup_req <= '0';
report "T5: waiting for data_out_valid";
wait until data_out_valid = '1';
report "T5: got data_out_valid";
wait for clk_period*10;
data_out_ready <= '0';
wait for clk_period*2;
data_out_ready <= '1';
wait for clk_period*12;
assert data_out = x"01" report "T5: expected opcode = 01 for request 'who has'";
-- expect our mac 00 23 20 21 22 23
wait for clk_period;
assert data_out = x"00" report "T5: incorrect our mac.0";
wait for clk_period;
assert data_out = x"23" report "T5: incorrect our mac.1";
wait for clk_period;
assert data_out = x"20" report "T5: incorrect our mac.2";
wait for clk_period;
assert data_out = x"21" report "T5: incorrect our mac.3";
wait for clk_period;
assert data_out = x"22" report "T5: incorrect our mac.4";
wait for clk_period;
assert data_out = x"23" report "T5: incorrect our mac.5";
-- expect our IP c0 a8 05 05
wait for clk_period;
assert data_out = x"c0" report "T5: incorrect our IP.0";
wait for clk_period;
assert data_out = x"a8" report "T5: incorrect our IP.1";
wait for clk_period;
assert data_out = x"05" report "T5: incorrect our IP.2";
wait for clk_period;
assert data_out = x"09" report "T5: incorrect our IP.3";
 
-- expect empty target mac
wait for clk_period;
assert data_out = x"00" report "T5: incorrect target mac.0";
wait for clk_period;
assert data_out = x"00" report "T5: incorrect target mac.1";
wait for clk_period;
assert data_out = x"00" report "T5: incorrect target mac.2";
wait for clk_period;
assert data_out = x"00" report "T5: incorrect target mac.3";
wait for clk_period;
assert data_out = x"00" report "T5: incorrect target mac.4";
wait for clk_period;
assert data_out = x"00" report "T5: incorrect target mac.5";
-- expect target IP c0 a8 05 01
wait for clk_period;
assert data_out = x"c0" report "T5: incorrect target IP.0";
wait for clk_period;
assert data_out = x"a8" report "T5: incorrect target IP.1";
wait for clk_period;
assert data_out = x"05" report "T5: incorrect target IP.2";
assert data_out_last = '0' report "T5: data out last incorrectly set on target IP.2 byte";
wait for clk_period;
assert data_out = x"03" report "T5: incorrect target IP.3";
assert data_out_last = '1' report "T5: data out last should be set";
wait for clk_period*10;
-- Send the reply
data_out_ready <= '1';
 
report "T5.2: Send an ARP reply: 192.168.5.3 has mac 02:12:03:23:04:54";
data_in_valid <= '1';
-- dst MAC (bc)
data_in <= x"ff"; wait for clk_period;
data_in <= x"ff"; wait for clk_period;
data_in <= x"ff"; wait for clk_period;
data_in <= x"ff"; wait for clk_period;
data_in <= x"ff"; wait for clk_period;
data_in <= x"ff"; wait for clk_period;
-- src MAC
data_in <= x"02"; wait for clk_period;
data_in <= x"12"; wait for clk_period;
data_in <= x"03"; wait for clk_period;
data_in <= x"23"; wait for clk_period;
data_in <= x"04"; wait for clk_period;
data_in <= x"54"; wait for clk_period;
-- type
data_in <= x"08"; wait for clk_period;
data_in <= x"06"; wait for clk_period;
-- HW type
data_in <= x"00"; wait for clk_period;
data_in <= x"01"; wait for clk_period;
-- Protocol type
data_in <= x"08"; wait for clk_period;
data_in <= x"00"; wait for clk_period;
-- HW size
data_in <= x"06"; wait for clk_period;
-- protocol size
data_in <= x"04"; wait for clk_period;
-- Opcode
data_in <= x"00"; wait for clk_period;
data_in <= x"02"; wait for clk_period;
-- Sender MAC
data_in <= x"02"; wait for clk_period;
data_in <= x"12"; wait for clk_period;
data_in <= x"03"; wait for clk_period;
data_in <= x"23"; wait for clk_period;
data_in <= x"04"; wait for clk_period;
data_in <= x"54"; wait for clk_period;
-- Sender IP
data_in <= x"c0"; wait for clk_period;
data_in <= x"a8"; wait for clk_period;
data_in <= x"05"; wait for clk_period;
data_in <= x"03"; wait for clk_period;
-- Target MAC
data_in <= x"00"; wait for clk_period;
data_in <= x"23"; wait for clk_period;
data_in <= x"20"; wait for clk_period;
data_in <= x"21"; wait for clk_period;
data_in <= x"22"; wait for clk_period;
data_in <= x"23"; wait for clk_period;
-- Target IP
data_in <= x"c0"; wait for clk_period;
data_in <= x"a8"; wait for clk_period;
data_in <= x"05"; wait for clk_period;
data_in <= x"09"; wait for clk_period;
data_in <= x"00"; wait for clk_period;
data_in <= x"00"; wait for clk_period;
assert arp_req_rslt.got_mac = '1' report "T5.2: expected got mac";
assert arp_req_rslt.got_err = '0' report "T5.2: expected got err = 0";
assert arp_req_rslt.mac = x"021203230454" report "T5.2: wrong mac value";
data_in <= x"00"; wait for clk_period;
data_in_last <= '1';
data_in <= x"00"; wait for clk_period;
data_in_last <= '0';
data_in_valid <= '0';
wait for clk_period*4;
 
report "T6: check that both these IPs remain in the store";
arp_req_req.ip <= x"c0a80501";
arp_req_req.lookup_req <= '1';
wait for clk_period;
arp_req_req.lookup_req <= '0';
wait for clk_period;
report "T6.1: wait for reply from store";
wait until arp_req_rslt.got_mac = '1' or arp_req_rslt.got_err = '1';
assert arp_req_rslt.got_mac = '1' report "T6.1: expected got mac";
assert arp_req_rslt.got_err = '0' report "T6.1: expected got err = 0";
assert arp_req_rslt.mac = x"00231829267c" report "T6.1: wrong mac value";
wait for clk_period*2;
 
arp_req_req.ip <= x"c0a80503";
arp_req_req.lookup_req <= '1';
wait for clk_period;
arp_req_req.lookup_req <= '0';
wait for clk_period;
report "T6.2: wait for reply from store";
wait until arp_req_rslt.got_mac = '1' or arp_req_rslt.got_err = '1';
assert arp_req_rslt.got_mac = '1' report "T6.2: expected got mac";
assert arp_req_rslt.got_err = '0' report "T6.2: expected got err = 0";
assert arp_req_rslt.mac = x"021203230454" report "T6.2: wrong mac value";
wait for clk_period*2;
 
report "T7 - test that receipt of wrong I Have does not satisfy a current req";
arp_req_req.ip <= x"c0a8050e";
arp_req_req.lookup_req <= '1';
wait for clk_period;
arp_req_req.lookup_req <= '0';
report "T7: waiting for data_out_valid";
wait until data_out_valid = '1';
report "T7: got data_out_valid";
wait for clk_period*10;
data_out_ready <= '0';
wait for clk_period*2;
data_out_ready <= '1';
wait for clk_period*12;
assert data_out = x"01" report "T7: expected opcode = 01 for request 'who has'";
-- expect our mac 00 23 20 21 22 23
wait for clk_period;
assert data_out = x"00" report "T7: incorrect our mac.0";
wait for clk_period;
assert data_out = x"23" report "T7: incorrect our mac.1";
wait for clk_period;
assert data_out = x"20" report "T7: incorrect our mac.2";
wait for clk_period;
assert data_out = x"21" report "T7: incorrect our mac.3";
wait for clk_period;
assert data_out = x"22" report "T7: incorrect our mac.4";
wait for clk_period;
assert data_out = x"23" report "T7: incorrect our mac.5";
-- expect our IP c0 a8 05 05
wait for clk_period;
assert data_out = x"c0" report "T7: incorrect our IP.0";
wait for clk_period;
assert data_out = x"a8" report "T7: incorrect our IP.1";
wait for clk_period;
assert data_out = x"05" report "T7: incorrect our IP.2";
wait for clk_period;
assert data_out = x"09" report "T7: incorrect our IP.3";
 
-- expect empty target mac
wait for clk_period;
assert data_out = x"00" report "T7: incorrect target mac.0";
wait for clk_period;
assert data_out = x"00" report "T7: incorrect target mac.1";
wait for clk_period;
assert data_out = x"00" report "T7: incorrect target mac.2";
wait for clk_period;
assert data_out = x"00" report "T7: incorrect target mac.3";
wait for clk_period;
assert data_out = x"00" report "T7: incorrect target mac.4";
wait for clk_period;
assert data_out = x"00" report "T7: incorrect target mac.5";
-- expect target IP c0 a8 05 0e
wait for clk_period;
assert data_out = x"c0" report "T7: incorrect target IP.0";
wait for clk_period;
assert data_out = x"a8" report "T7: incorrect target IP.1";
wait for clk_period;
assert data_out = x"05" report "T7: incorrect target IP.2";
assert data_out_last = '0' report "T7: data out last incorrectly set on target IP.2 byte";
wait for clk_period;
assert data_out = x"0e" report "T7: incorrect target IP.3";
assert data_out_last = '1' report "T7: data out last should be set";
wait for clk_period*10;
-- Send the reply
data_out_ready <= '1';
 
report "T7.2: Send an arbitrary unwanted ARP reply: 192.168.7.3 has mac 57:12:34:19:23:9a";
data_in_valid <= '1';
-- dst MAC (bc)
data_in <= x"ff"; wait for clk_period;
data_in <= x"ff"; wait for clk_period;
data_in <= x"ff"; wait for clk_period;
data_in <= x"ff"; wait for clk_period;
data_in <= x"ff"; wait for clk_period;
data_in <= x"ff"; wait for clk_period;
-- src MAC
data_in <= x"57"; wait for clk_period;
data_in <= x"12"; wait for clk_period;
data_in <= x"34"; wait for clk_period;
data_in <= x"19"; wait for clk_period;
data_in <= x"23"; wait for clk_period;
data_in <= x"9a"; wait for clk_period;
-- type
data_in <= x"08"; wait for clk_period;
data_in <= x"06"; wait for clk_period;
-- HW type
data_in <= x"00"; wait for clk_period;
data_in <= x"01"; wait for clk_period;
-- Protocol type
data_in <= x"08"; wait for clk_period;
data_in <= x"00"; wait for clk_period;
-- HW size
data_in <= x"06"; wait for clk_period;
-- protocol size
data_in <= x"04"; wait for clk_period;
-- Opcode
data_in <= x"00"; wait for clk_period;
data_in <= x"02"; wait for clk_period;
-- Sender MAC
data_in <= x"57"; wait for clk_period;
data_in <= x"12"; wait for clk_period;
data_in <= x"34"; wait for clk_period;
data_in <= x"19"; wait for clk_period;
data_in <= x"23"; wait for clk_period;
data_in <= x"9a"; wait for clk_period;
-- Sender IP
data_in <= x"c0"; wait for clk_period;
data_in <= x"a8"; wait for clk_period;
data_in <= x"07"; wait for clk_period;
data_in <= x"03"; wait for clk_period;
-- Target MAC
data_in <= x"00"; wait for clk_period;
data_in <= x"23"; wait for clk_period;
data_in <= x"20"; wait for clk_period;
data_in <= x"21"; wait for clk_period;
data_in <= x"22"; wait for clk_period;
data_in <= x"23"; wait for clk_period;
-- Target IP
data_in <= x"c0"; wait for clk_period;
data_in <= x"a8"; wait for clk_period;
data_in <= x"05"; wait for clk_period;
data_in <= x"09"; wait for clk_period;
data_in <= x"00"; wait for clk_period;
data_in <= x"00"; wait for clk_period;
assert arp_req_rslt.got_mac = '0' report "T7.2: expected got mac = 0";
assert arp_req_rslt.got_err = '0' report "T7.2: expected got err = 0";
data_in <= x"00"; wait for clk_period;
data_in_last <= '1';
data_in <= x"00"; wait for clk_period;
data_in_last <= '0';
data_in_valid <= '0';
wait for clk_period*4;
 
-- Send the reply
data_out_ready <= '1';
 
report "T7.3: Send a wanted ARP reply: 192.168.5.e has mac 76:34:98:55:aa:37";
data_in_valid <= '1';
-- dst MAC (bc)
data_in <= x"ff"; wait for clk_period;
data_in <= x"ff"; wait for clk_period;
data_in <= x"ff"; wait for clk_period;
data_in <= x"ff"; wait for clk_period;
data_in <= x"ff"; wait for clk_period;
data_in <= x"ff"; wait for clk_period;
-- src MAC
data_in <= x"76"; wait for clk_period;
data_in <= x"34"; wait for clk_period;
data_in <= x"98"; wait for clk_period;
data_in <= x"55"; wait for clk_period;
data_in <= x"aa"; wait for clk_period;
data_in <= x"37"; wait for clk_period;
-- type
data_in <= x"08"; wait for clk_period;
data_in <= x"06"; wait for clk_period;
-- HW type
data_in <= x"00"; wait for clk_period;
data_in <= x"01"; wait for clk_period;
-- Protocol type
data_in <= x"08"; wait for clk_period;
data_in <= x"00"; wait for clk_period;
-- HW size
data_in <= x"06"; wait for clk_period;
-- protocol size
data_in <= x"04"; wait for clk_period;
-- Opcode
data_in <= x"00"; wait for clk_period;
data_in <= x"02"; wait for clk_period;
-- Sender MAC
data_in <= x"76"; wait for clk_period;
data_in <= x"34"; wait for clk_period;
data_in <= x"98"; wait for clk_period;
data_in <= x"55"; wait for clk_period;
data_in <= x"aa"; wait for clk_period;
data_in <= x"37"; wait for clk_period;
-- Sender IP
data_in <= x"c0"; wait for clk_period;
data_in <= x"a8"; wait for clk_period;
data_in <= x"05"; wait for clk_period;
data_in <= x"0e"; wait for clk_period;
-- Target MAC
data_in <= x"00"; wait for clk_period;
data_in <= x"23"; wait for clk_period;
data_in <= x"20"; wait for clk_period;
data_in <= x"21"; wait for clk_period;
data_in <= x"22"; wait for clk_period;
data_in <= x"23"; wait for clk_period;
-- Target IP
data_in <= x"c0"; wait for clk_period;
data_in <= x"a8"; wait for clk_period;
data_in <= x"05"; wait for clk_period;
data_in <= x"09"; wait for clk_period;
data_in <= x"00"; wait for clk_period;
data_in <= x"00"; wait for clk_period;
assert arp_req_rslt.got_mac = '1' report "T7.3: expected got mac";
assert arp_req_rslt.got_err = '0' report "T7.3: expected got err = 0";
assert arp_req_rslt.mac = x"76349855aa37" report "T7.3: wrong mac value";
data_in <= x"00"; wait for clk_period;
data_in_last <= '1';
data_in <= x"00"; wait for clk_period;
data_in_last <= '0';
data_in_valid <= '0';
wait for clk_period*4;
 
 
report "T8: Request 192.168.5.4 (not cached), dont send a reply and wait for timeout";
arp_req_req.ip <= x"c0a80504";
arp_req_req.lookup_req <= '1';
wait for clk_period;
arp_req_req.lookup_req <= '0';
wait for clk_period*20;
assert mac_tx_req = '1' report "T8: should be requesting TX channel";
wait for clk_period*220;
assert arp_req_rslt.got_mac = '0' report "T8: should not have got mac";
assert arp_req_rslt.got_err = '1' report "T8: should have got err";
report "T9: Request 192.168.5.7 (not cached= and Send an ARP reply: 192.168.5.7 has mac 02:15:03:23:04:54";
arp_req_req.ip <= x"c0a80507";
arp_req_req.lookup_req <= '1';
wait for clk_period;
assert arp_req_rslt.got_mac = '0' report "T9: should not yet have mac";
assert arp_req_rslt.got_err = '0' report "T9: should not have got err";
arp_req_req.lookup_req <= '0';
wait for clk_period*20;
assert mac_tx_req = '1' report "T9: should be requesting TX channel";
wait for clk_period*50;
-- Send the reply
data_out_ready <= '1';
 
data_in_valid <= '1';
-- dst MAC (bc)
data_in <= x"ff"; wait for clk_period;
data_in <= x"ff"; wait for clk_period;
data_in <= x"ff"; wait for clk_period;
data_in <= x"ff"; wait for clk_period;
data_in <= x"ff"; wait for clk_period;
data_in <= x"ff"; wait for clk_period;
-- src MAC
data_in <= x"02"; wait for clk_period;
data_in <= x"15"; wait for clk_period;
data_in <= x"03"; wait for clk_period;
data_in <= x"23"; wait for clk_period;
data_in <= x"04"; wait for clk_period;
data_in <= x"54"; wait for clk_period;
-- type
data_in <= x"08"; wait for clk_period;
data_in <= x"06"; wait for clk_period;
-- HW type
data_in <= x"00"; wait for clk_period;
data_in <= x"01"; wait for clk_period;
-- Protocol type
data_in <= x"08"; wait for clk_period;
data_in <= x"00"; wait for clk_period;
-- HW size
data_in <= x"06"; wait for clk_period;
-- protocol size
data_in <= x"04"; wait for clk_period;
-- Opcode
data_in <= x"00"; wait for clk_period;
data_in <= x"02"; wait for clk_period;
-- Sender MAC
data_in <= x"02"; wait for clk_period;
data_in <= x"15"; wait for clk_period;
data_in <= x"03"; wait for clk_period;
data_in <= x"23"; wait for clk_period;
data_in <= x"04"; wait for clk_period;
data_in <= x"54"; wait for clk_period;
-- Sender IP
data_in <= x"c0"; wait for clk_period;
data_in <= x"a8"; wait for clk_period;
data_in <= x"05"; wait for clk_period;
data_in <= x"07"; wait for clk_period;
-- Target MAC
data_in <= x"00"; wait for clk_period;
data_in <= x"23"; wait for clk_period;
data_in <= x"20"; wait for clk_period;
data_in <= x"21"; wait for clk_period;
data_in <= x"22"; wait for clk_period;
data_in <= x"23"; wait for clk_period;
-- Target IP
data_in <= x"c0"; wait for clk_period;
data_in <= x"a8"; wait for clk_period;
data_in <= x"05"; wait for clk_period;
data_in <= x"09"; wait for clk_period;
data_in <= x"00"; wait for clk_period;
data_in <= x"00"; wait for clk_period;
data_in <= x"00"; wait for clk_period;
data_in_last <= '1';
data_in <= x"00"; wait for clk_period;
data_in_last <= '0';
data_in_valid <= '0';
wait for clk_period;
assert arp_req_rslt.got_mac = '1' report "T9: should have got mac";
assert arp_req_rslt.mac = x"021503230454" report "T9: incorrect mac";
assert arp_req_rslt.got_err = '0' report "T9: should not have got err";
wait for clk_period*10;
 
report "T10: Request 192.168.5.7 again an expect it to be in the cache";
arp_req_req.ip <= x"c0a80507";
arp_req_req.lookup_req <= '1';
wait for clk_period;
assert arp_req_rslt.got_mac = '1' report "T10: should have mac";
assert arp_req_rslt.got_err = '0' report "T10: should not have got err";
arp_req_req.lookup_req <= '0';
wait for clk_period*20;
report "T11: Clear the cache, Request 192.168.5.7 again an expect a 'who has' to be sent";
control.clear_cache <= '1';
wait for clk_period;
control.clear_cache <= '0';
wait for clk_period;
arp_req_req.ip <= x"c0a80507";
arp_req_req.lookup_req <= '1';
wait for clk_period;
assert arp_req_rslt.got_mac = '0' report "T11: should not yet have mac";
assert arp_req_rslt.got_err = '0' report "T11: should not have got err";
arp_req_req.lookup_req <= '0';
wait for clk_period*20;
assert mac_tx_req = '1' report "T11: should be requesting TX channel";
wait for clk_period*50;
-- Send the reply
data_out_ready <= '1';
 
data_in_valid <= '1';
-- dst MAC (bc)
data_in <= x"ff"; wait for clk_period;
data_in <= x"ff"; wait for clk_period;
data_in <= x"ff"; wait for clk_period;
data_in <= x"ff"; wait for clk_period;
data_in <= x"ff"; wait for clk_period;
data_in <= x"ff"; wait for clk_period;
-- src MAC
data_in <= x"02"; wait for clk_period;
data_in <= x"15"; wait for clk_period;
data_in <= x"03"; wait for clk_period;
data_in <= x"23"; wait for clk_period;
data_in <= x"04"; wait for clk_period;
data_in <= x"54"; wait for clk_period;
-- type
data_in <= x"08"; wait for clk_period;
data_in <= x"06"; wait for clk_period;
-- HW type
data_in <= x"00"; wait for clk_period;
data_in <= x"01"; wait for clk_period;
-- Protocol type
data_in <= x"08"; wait for clk_period;
data_in <= x"00"; wait for clk_period;
-- HW size
data_in <= x"06"; wait for clk_period;
-- protocol size
data_in <= x"04"; wait for clk_period;
-- Opcode
data_in <= x"00"; wait for clk_period;
data_in <= x"02"; wait for clk_period;
-- Sender MAC
data_in <= x"02"; wait for clk_period;
data_in <= x"15"; wait for clk_period;
data_in <= x"03"; wait for clk_period;
data_in <= x"23"; wait for clk_period;
data_in <= x"55"; wait for clk_period;
data_in <= x"54"; wait for clk_period;
-- Sender IP
data_in <= x"c0"; wait for clk_period;
data_in <= x"a8"; wait for clk_period;
data_in <= x"05"; wait for clk_period;
data_in <= x"07"; wait for clk_period;
-- Target MAC
data_in <= x"00"; wait for clk_period;
data_in <= x"23"; wait for clk_period;
data_in <= x"20"; wait for clk_period;
data_in <= x"21"; wait for clk_period;
data_in <= x"22"; wait for clk_period;
data_in <= x"23"; wait for clk_period;
-- Target IP
data_in <= x"c0"; wait for clk_period;
data_in <= x"a8"; wait for clk_period;
data_in <= x"05"; wait for clk_period;
data_in <= x"09"; wait for clk_period;
data_in <= x"00"; wait for clk_period;
data_in <= x"00"; wait for clk_period;
data_in <= x"00"; wait for clk_period;
data_in_last <= '1';
data_in <= x"00"; wait for clk_period;
data_in_last <= '0';
data_in_valid <= '0';
wait for clk_period;
assert arp_req_rslt.got_mac = '1' report "T11: should have got mac";
assert arp_req_rslt.mac = x"021503235554" report "T11: incorrect mac";
assert arp_req_rslt.got_err = '0' report "T11: should not have got err";
wait for clk_period*10;
report "--- end of tests ---";
wait;
end process;
 
END;
/IP_complete_nomac_tb.vhd
282,11 → 282,11
ip_tx_start <= '0'; wait for clk_period;
assert ip_tx_result = IPTX_RESULT_SENDING report "T1: result should be IPTX_RESULT_SENDING";
assert ip_tx_result = IPTX_RESULT_SENDING report "T2: result should be IPTX_RESULT_SENDING";
wait for clk_period*2;
assert ip_tx_data_out_ready = '0' report "T2: IP data out ready asserted too early";
assert ip_tx_data_out_ready = '0' report "T2: IP data out ready asserted too early";
-- need to wait for ARP tx to complete
376,7 → 376,7
ip_tx.data.data_out_last <= '1';
wait for clk_period;
 
assert mac_tx_tlast = '1' report "T1: mac_tx_tlast not set on last byte";
assert mac_tx_tlast = '1' report "T2: mac_tx_tlast not set on last byte";
 
wait for clk_period;
 
384,10 → 384,52
ip_tx.data.data_out_last <= '0';
wait for clk_period*2;
 
assert ip_tx_result = IPTX_RESULT_SENT report "T1: result should be SENT";
wait for clk_period*2;
assert ip_tx_result = IPTX_RESULT_SENT report "T2: result should be SENT";
wait for clk_period*10;
 
------------
-- TEST 3 -- Check that sending to the same IP addr doesnt cause an ARP req as the addr is cached
------------
 
report "T3: Send 2nd IP TX to same IP addr - should not need to do ARP tx/rx";
ip_tx.hdr.protocol <= x"35";
ip_tx.hdr.data_length <= x"0006";
ip_tx.hdr.dst_ip_addr <= x"c0123478";
ip_tx.data.data_out_valid <= '0';
ip_tx.data.data_out_last <= '0';
wait for clk_period;
ip_tx_start <= '1'; wait for clk_period;
ip_tx_start <= '0'; wait for clk_period;
assert ip_tx_result = IPTX_RESULT_SENDING report "T3: result should be IPTX_RESULT_SENDING";
wait for clk_period*2;
assert ip_tx_data_out_ready = '0' report "T3: IP data out ready asserted too early";
wait until ip_tx_data_out_ready = '1';
-- start to tx IP data
ip_tx.data.data_out_valid <= '1';
ip_tx.data.data_out <= x"81"; wait for clk_period;
ip_tx.data.data_out <= x"83"; wait for clk_period;
ip_tx.data.data_out <= x"85"; wait for clk_period;
ip_tx.data.data_out <= x"87"; wait for clk_period;
ip_tx.data.data_out <= x"89"; wait for clk_period;
ip_tx.data.data_out <= x"8b";
ip_tx.data.data_out_last <= '1';
wait for clk_period;
 
assert mac_tx_tlast = '1' report "T3: mac_tx_tlast not set on last byte";
 
wait for clk_period;
 
ip_tx.data.data_out_valid <= '0';
ip_tx.data.data_out_last <= '0';
wait for clk_period*2;
 
assert ip_tx_result = IPTX_RESULT_SENT report "T3: result should be SENT";
wait for clk_period*2;
 
 
 
report "-- end of tests --";
 
wait;
/arp_STORE_tb.vhd
0,0 → 1,384
--------------------------------------------------------------------------------
-- Company:
-- Engineer:
--
-- Create Date: 07:38:43 02/13/2012
-- Design Name:
-- Module Name: arp_STORE_tb.vhd
-- Project Name: udp3
-- Target Device:
-- Tool versions:
-- Description:
--
-- VHDL Test Bench Created by ISE for module: arp_STORE_br
--
-- Dependencies:
--
-- Revision:
-- Revision 0.01 - File Created
-- Additional Comments:
--
-- Notes:
-- This testbench has been automatically generated using types std_logic and
-- std_logic_vector for the ports of the unit under test. Xilinx recommends
-- that these types always be used for the top-level I/O of a design in order
-- to guarantee that the testbench will bind correctly to the post-implementation
-- simulation model.
--------------------------------------------------------------------------------
library IEEE;
use IEEE.STD_LOGIC_1164.ALL;
use IEEE.NUMERIC_STD.ALL;
use ieee.std_logic_unsigned.all;
use work.arp_types.all;
ENTITY arp_STORE_tb IS
END arp_STORE_tb;
ARCHITECTURE behavior OF arp_STORE_tb IS
-- Component Declaration for the Unit Under Test (UUT)
COMPONENT arp_STORE_br
generic (
MAX_ARP_ENTRIES : integer := 256 -- max entries in the store
);
PORT(
-- read signals
read_req : in arp_store_rdrequest_t; -- requesting a '1' or store
read_result : out arp_store_result_t; -- the result
-- write signals
write_req : in arp_store_wrrequest_t; -- requesting a '1' or store
-- control and status signals
clear_store : in std_logic; -- erase all entries
entry_count : out unsigned(7 downto 0); -- how many entries currently in store
-- system signals
clk : in std_logic;
reset : in STD_LOGIC
);
END COMPONENT;
 
--Inputs
signal read_req : arp_store_rdrequest_t;
signal write_req : arp_store_wrrequest_t;
signal clear_store : std_logic := '0';
signal clk : std_logic := '0';
signal reset : std_logic := '0';
 
--Outputs
signal read_result : arp_store_result_t;
signal entry_count : unsigned(7 downto 0); -- how many entries currently in store
 
-- Clock period definitions
constant clk_period : time := 8 ns;
BEGIN
-- Instantiate the Unit Under Test (UUT)
uut: arp_STORE_br
generic map (
MAX_ARP_ENTRIES => 4
)
PORT MAP (
read_req => read_req,
read_result => read_result,
write_req => write_req,
clear_store => clear_store,
entry_count => entry_count,
clk => clk,
reset => reset
);
 
-- Clock process definitions
clk_process :process
begin
clk <= '0';
wait for clk_period/2;
clk <= '1';
wait for clk_period/2;
end process;
 
-- Stimulus process
stim_proc: process
begin
read_req.req <= '0';
read_req.ip <= (others => '0');
write_req.req <= '0';
write_req.entry.ip <= (others => '0');
write_req.entry.mac <= (others => '0');
reset <= '1';
-- hold reset state
wait for clk_period*10;
reset <= '0';
 
-- insert stimulus here
report "T1 - look for something when store is empty";
read_req.ip <= x"12345678";
read_req.req <= '1';
wait for clk_period*4;
assert read_result.status = NOT_FOUND report "T1: expected NOT_FOUND";
wait for clk_period;
read_req.req <= '0';
wait for clk_period;
assert read_result.status = IDLE report "T1: expected IDLE";
assert entry_count = x"00" report "T1: wrong entry count";
 
report "T2 - insert first entry into store";
write_req.entry.ip <= x"12345678";
write_req.entry.mac <= x"002398127645";
write_req.req <= '1';
wait for clk_period;
write_req.req <= '0';
wait until read_result.status = IDLE;
wait for clk_period;
assert entry_count = x"01" report "T2: wrong entry count";
report "T3 - check if can find this single entry";
read_req.ip <= x"12345678";
read_req.req <= '1';
wait until read_result.status = FOUND or read_result.status = NOT_FOUND;
wait for clk_period;
assert read_result.status = FOUND report "T3: expected FOUND";
assert read_result.entry.ip = x"12345678" report "T3: wrong ip addr";
assert read_result.entry.mac = x"002398127645" report "T3: wrong mac addr";
wait for clk_period;
read_req.req <= '0';
wait for clk_period*2;
assert read_result.status = IDLE report "T3: expected IDLE";
 
report "T4 - check unable to find missing entry with one entry in store";
read_req.ip <= x"12345679";
read_req.req <= '1';
wait until read_result.status = FOUND or read_result.status = NOT_FOUND;
wait for clk_period;
assert read_result.status = NOT_FOUND report "T4: expected NOT_FOUND";
wait for clk_period;
read_req.req <= '0';
wait for clk_period*2;
assert read_result.status = IDLE report "T4: expected IDLE";
 
report "T5 - insert 2nd entry into store and check can find both entries";
write_req.entry.ip <= x"12345679";
write_req.entry.mac <= x"101202303404";
write_req.req <= '1';
wait for clk_period;
write_req.req <= '0';
wait until read_result.status = IDLE;
wait for clk_period;
assert entry_count = x"02" report "T4: wrong entry count";
read_req.ip <= x"12345678";
read_req.req <= '1';
wait until read_result.status = FOUND or read_result.status = NOT_FOUND;
wait for clk_period;
assert read_result.status = FOUND report "T5.1: expected FOUND";
assert read_result.entry.ip = x"12345678" report "T5.1: wrong ip addr";
assert read_result.entry.mac = x"002398127645" report "T5.1: wrong mac addr";
read_req.req <= '0';
wait for clk_period*2;
assert read_result.status = IDLE report "T5.1: expected IDLE";
read_req.ip <= x"12345679";
read_req.req <= '1';
wait until read_result.status = FOUND or read_result.status = NOT_FOUND;
wait for clk_period;
assert read_result.status = FOUND report "T5.2: expected FOUND";
assert read_result.entry.ip = x"12345679" report "T5.2: wrong ip addr";
assert read_result.entry.mac = x"101202303404" report "T5.2: wrong mac addr";
read_req.req <= '0';
wait for clk_period*2;
assert read_result.status = IDLE report "T5.2: expected IDLE";
 
report "T6 - insert 2 more entries so that the store is full. check can find all";
write_req.entry.ip <= x"1234567a";
write_req.entry.mac <= x"10120230340a";
write_req.req <= '1';
wait for clk_period;
write_req.req <= '0';
wait until read_result.status = IDLE;
wait for clk_period;
write_req.entry.ip <= x"1234567b";
write_req.entry.mac <= x"10120230340b";
write_req.req <= '1';
wait for clk_period;
write_req.req <= '0';
wait until read_result.status = IDLE;
wait for clk_period;
assert entry_count = x"04" report "T6: wrong entry count";
read_req.ip <= x"12345678";
read_req.req <= '1';
wait until read_result.status = FOUND or read_result.status = NOT_FOUND;
wait for clk_period;
assert read_result.status = FOUND report "T6.1: expected FOUND";
assert read_result.entry.ip = x"12345678" report "T6.1: wrong ip addr";
assert read_result.entry.mac = x"002398127645" report "T6.1: wrong mac addr";
read_req.req <= '0';
wait for clk_period*2;
assert read_result.status = IDLE report "T6.1: expected IDLE";
read_req.ip <= x"12345679";
read_req.req <= '1';
wait until read_result.status = FOUND or read_result.status = NOT_FOUND;
wait for clk_period;
assert read_result.status = FOUND report "T6.2: expected FOUND";
assert read_result.entry.ip = x"12345679" report "T6.2: wrong ip addr";
assert read_result.entry.mac = x"101202303404" report "T6.2: wrong mac addr";
read_req.req <= '0';
wait for clk_period*2;
assert read_result.status = IDLE report "T6.2: expected IDLE";
read_req.ip <= x"1234567a";
read_req.req <= '1';
wait until read_result.status = FOUND or read_result.status = NOT_FOUND;
wait for clk_period;
assert read_result.status = FOUND report "T6.3: expected FOUND";
assert read_result.entry.ip = x"1234567a" report "T6.3: wrong ip addr";
assert read_result.entry.mac = x"10120230340a" report "T6.3: wrong mac addr";
read_req.req <= '0';
wait for clk_period*2;
assert read_result.status = IDLE report "T6.3: expected IDLE";
read_req.ip <= x"1234567b";
read_req.req <= '1';
wait until read_result.status = FOUND or read_result.status = NOT_FOUND;
wait for clk_period;
assert read_result.status = FOUND report "T6.4: expected FOUND";
assert read_result.entry.ip = x"1234567b" report "T6.4: wrong ip addr";
assert read_result.entry.mac = x"10120230340b" report "T6.4: wrong mac addr";
read_req.req <= '0';
wait for clk_period*2;
assert read_result.status = IDLE report "T6.4: expected IDLE";
 
report "T7 - with store full, check that we dont find missing item";
read_req.ip <= x"1233367b";
read_req.req <= '1';
wait until read_result.status = FOUND or read_result.status = NOT_FOUND;
wait for clk_period;
assert read_result.status = NOT_FOUND report "T7: expected NOT_FOUND";
read_req.req <= '0';
wait for clk_period*2;
assert read_result.status = IDLE report "T7: expected IDLE";
 
report "T8 - insert additional entry into store - will erase one of the others";
write_req.entry.ip <= x"12345699";
write_req.entry.mac <= x"992398127699";
write_req.req <= '1';
wait for clk_period;
write_req.req <= '0';
wait until read_result.status = IDLE;
wait for clk_period;
assert entry_count = x"04" report "T8: wrong entry count";
read_req.ip <= x"12345699";
read_req.req <= '1';
wait until read_result.status = FOUND or read_result.status = NOT_FOUND;
wait for clk_period;
assert read_result.status = FOUND report "T8: expected FOUND";
assert read_result.entry.ip = x"12345699" report "T8: wrong ip addr";
assert read_result.entry.mac = x"992398127699" report "T8: wrong mac addr";
read_req.req <= '0';
wait for clk_period*2;
assert read_result.status = IDLE report "T8: expected IDLE";
 
report "T9 - clear the store and ensure cant find something that was there";
clear_store <= '1';
wait for clk_period;
clear_store <= '0';
wait for clk_period;
assert entry_count = x"00" report "T9: wrong entry count";
read_req.ip <= x"12345699";
read_req.req <= '1';
wait until read_result.status = FOUND or read_result.status = NOT_FOUND;
wait for clk_period;
assert read_result.status = NOT_FOUND report "T9: expected NOT_FOUND";
read_req.req <= '0';
wait for clk_period*2;
assert read_result.status = IDLE report "T9: expected IDLE";
 
report "T10 - refill the store with three entries";
write_req.entry.ip <= x"12345675";
write_req.entry.mac <= x"10120230340a";
write_req.req <= '1';
wait for clk_period;
write_req.req <= '0';
wait until read_result.status = IDLE;
wait for clk_period;
write_req.entry.ip <= x"12345676";
write_req.entry.mac <= x"10120230340b";
write_req.req <= '1';
wait for clk_period;
write_req.req <= '0';
wait until read_result.status = IDLE;
wait for clk_period;
write_req.entry.ip <= x"12345677";
write_req.entry.mac <= x"10120230340c";
write_req.req <= '1';
wait for clk_period;
write_req.req <= '0';
wait until read_result.status = IDLE;
wait for clk_period;
assert entry_count = x"03" report "T10: wrong entry count";
 
report "T11 - check middle entry, then change it and check again";
read_req.ip <= x"12345676";
read_req.req <= '1';
wait until read_result.status = FOUND or read_result.status = NOT_FOUND;
wait for clk_period;
assert read_result.status = FOUND report "T11.1: expected FOUND";
assert read_result.entry.ip = x"12345676" report "T11.1: wrong ip addr";
assert read_result.entry.mac = x"10120230340b" report "T11.1: wrong mac addr";
read_req.req <= '0';
wait for clk_period*2;
assert read_result.status = IDLE report "T11.1: expected IDLE";
write_req.entry.ip <= x"12345676";
write_req.entry.mac <= x"10120990340b";
write_req.req <= '1';
wait for clk_period;
write_req.req <= '0';
wait for clk_period;
assert entry_count = x"03" report "T11: wrong entry count";
read_req.ip <= x"12345676";
read_req.req <= '1';
wait until read_result.status = FOUND or read_result.status = NOT_FOUND;
wait for clk_period;
assert read_result.status = FOUND report "T11.2: expected FOUND";
assert read_result.entry.ip = x"12345676" report "T11.2: wrong ip addr";
assert read_result.entry.mac = x"10120990340b" report "T11.2: wrong mac addr";
read_req.req <= '0';
wait for clk_period*2;
assert read_result.status = IDLE report "T11.2: expected IDLE";
 
report "T12 - check 2nd write at beginning";
-- clear store, write 1st entry, overwrite the entry, and check
clear_store <= '1';
wait for clk_period;
clear_store <= '0';
wait for clk_period;
assert entry_count = x"00" report "T12.1: wrong entry count";
write_req.entry.ip <= x"12345678";
write_req.entry.mac <= x"002398127645";
write_req.req <= '1';
wait for clk_period;
write_req.req <= '0';
wait until read_result.status = IDLE;
wait for clk_period;
assert entry_count = x"01" report "T12.2: wrong entry count";
write_req.entry.ip <= x"12345678";
write_req.entry.mac <= x"002398127647";
write_req.req <= '1';
wait for clk_period;
write_req.req <= '0';
wait until read_result.status = IDLE;
wait for clk_period;
assert entry_count = x"01" report "T12.3: wrong entry count";
read_req.ip <= x"12345678";
read_req.req <= '1';
wait until read_result.status = FOUND or read_result.status = NOT_FOUND;
wait for clk_period;
assert read_result.status = FOUND report "T12.4: expected FOUND";
assert read_result.entry.ip = x"12345678" report "T12.4: wrong ip addr";
assert read_result.entry.mac = x"002398127647" report "T12.4: wrong mac addr";
read_req.req <= '0';
wait for clk_period*2;
assert read_result.status = IDLE report "T12.5: expected IDLE";
 
report "--- end of tests ---";
wait;
end process;
 
END;

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