def do_test(arch, clk, phy, seed):
    rand = random.Random()
    rand.seed(seed)

    dev_address = get_dut_address()
    ep_loopback = 3

    # The inter-frame gap is to give the DUT time to print its output
    packets = []

    data_val = 0;
    pkt_length = 20
    data_pid = 0x3 #DATA0 

    for pkt_length in range(10, 20):
    
        # min 237
        # increased to 277 when SETUP/OUT checking added
        AppendOutToken(packets, ep_loopback, inter_pkt_gap=277)
        packets.append(TxDataPacket(rand, data_start_val=data_val, length=pkt_length, pid=data_pid)) #DATA0
        packets.append(RxHandshakePacket(timeout=9))
        
        data_val = data_val + pkt_length
        data_pid = data_pid ^ 8

    do_rx_test(arch, clk, phy, packets, __file__, seed,
               level='smoke', extra_tasks=[])
Ejemplo n.º 2
0
def do_test(mac, arch, rx_clk, rx_phy, tx_clk, tx_phy, seed):
    rand = random.Random()
    rand.seed(seed)

    dut_mac_address = get_dut_mac_address()

    packets = []

    # Part A - Send different length preambles and ensure the packets are still received
    # Check a selection of preamble lengths from 1 byte to 64 bytes (including SFD)
    test_lengths = [3, 4, 5, 61, 127]
    if tx_clk.get_rate() == Clock.CLK_125MHz:
        # The RGMII requires a longer preamble
        test_lengths = [5, 7, 9, 61, 127]

    for num_preamble_nibbles in test_lengths:
        packets.append(
            MiiPacket(rand,
                      dst_mac_addr=dut_mac_address,
                      num_preamble_nibbles=num_preamble_nibbles,
                      create_data_args=[
                          'step',
                          (rand.randint(1, 254), choose_small_frame_size(rand))
                      ],
                      inter_frame_gap=packet_processing_time(tx_phy, 46, mac)))

    do_rx_test(mac, arch, rx_clk, rx_phy, tx_clk, tx_phy, packets, __file__,
               seed)
def do_test(arch, tx_clk, tx_phy, seed):
    rand = random.Random()
    rand.seed(seed)

    dev_address = get_dut_address()
    ep = 1

    # The inter-frame gap is to give the DUT time to print its output
    packets = []

    dataval = 0

    AppendOutToken(packets, ep)
    packets.append(
        TxDataPacket(rand, data_start_val=dataval, length=10, pid=0x3))  #DATA0
    packets.append(RxHandshakePacket())

    # Note, quite big gap to allow checking.

    dataval += 10
    AppendOutToken(packets, ep, inter_pkt_gap=6000)
    packets.append(
        TxDataPacket(rand, data_start_val=dataval, length=11, pid=0xb))  #DATA1
    packets.append(RxHandshakePacket())

    dataval += 11
    AppendOutToken(packets, ep, inter_pkt_gap=6000)
    packets.append(
        TxDataPacket(rand,
                     data_start_val=dataval,
                     length=12,
                     bad_crc=True,
                     pid=0x3))  #DATA0
    # Bad CRC - dont expect ACK
    #packets.append(RxHandshakePacket())

    #Due to bad CRC, XUD will not ACK and expect a resend of the same packet - so dont change PID
    dataval += 12
    AppendOutToken(packets, ep, inter_pkt_gap=6000)
    packets.append(
        TxDataPacket(rand, data_start_val=dataval, length=13, pid=0x3))  #DATA0
    packets.append(RxHandshakePacket(timeout=9))

    # PID toggle as normal
    dataval += 13
    AppendOutToken(packets, ep, inter_pkt_gap=6000)
    packets.append(
        TxDataPacket(rand, data_start_val=dataval, length=14, pid=0xb))  #DATA1
    packets.append(RxHandshakePacket())

    do_rx_test(arch,
               tx_clk,
               tx_phy,
               packets,
               __file__,
               seed,
               level='smoke',
               extra_tasks=[])
Ejemplo n.º 4
0
def do_test(arch, tx_clk, tx_phy, seed):
    rand = random.Random()
    rand.seed(seed)

    dev_address = get_dut_address()
    ep = 2

    # The inter-frame gap is to give the DUT time to print its output
    packets = []

    dataval = 0

    AppendInToken(packets, ep)
    packets.append(
        RxDataPacket(rand, data_start_val=dataval, length=10, pid=0x3))  #DATA0
    packets.append(TxHandshakePacket())

    dataval += 10
    AppendInToken(packets, ep, inter_pkt_gap=5000)
    packets.append(
        RxDataPacket(rand, data_start_val=dataval, length=11, pid=0xb))  #DATA1
    packets.append(TxHandshakePacket())

    #pretend CRC got broken on way to host and dont send ACK
    dataval += 11
    AppendInToken(packets, ep, inter_pkt_gap=5000)
    packets.append(
        RxDataPacket(rand, data_start_val=dataval, length=12, pid=0x3))  #DATA0
    #packets.append(TxHandshakePacket())

    #xCore should resend same packet again..
    AppendInToken(packets, ep, inter_pkt_gap=5000)
    packets.append(
        RxDataPacket(rand, data_start_val=dataval, length=12, pid=0x3))  #DATA0
    packets.append(TxHandshakePacket())

    dataval += 12
    AppendInToken(packets, ep, inter_pkt_gap=5000)
    packets.append(
        RxDataPacket(rand, data_start_val=dataval, length=13, pid=0xb))  #DATA1
    packets.append(TxHandshakePacket())

    dataval += 13
    AppendInToken(packets, ep, inter_pkt_gap=5000)
    packets.append(
        RxDataPacket(rand, data_start_val=dataval, length=14, pid=0x3))  #DATA0
    packets.append(TxHandshakePacket())

    # Note, quite big gap to allow checking.
    do_rx_test(arch,
               tx_clk,
               tx_phy,
               packets,
               __file__,
               seed,
               level='smoke',
               extra_tasks=[])
Ejemplo n.º 5
0
def do_test(arch, clk, phy, seed):
    rand = random.Random()
    rand.seed(seed)

    dev_address = get_dut_address()
    ep = 1

    # The inter-frame gap is to give the DUT time to print its output
    packets = []

    dataval = 0

    AppendOutToken(packets, ep)
    packets.append(
        TxDataPacket(rand, data_start_val=dataval, length=10, pid=0x3))  #DATA0
    packets.append(RxHandshakePacket())

    # Note, quite big gap to allow checking.

    dataval += 10
    AppendOutToken(packets, ep, inter_pkt_gap=6000)
    packets.append(
        TxDataPacket(rand, data_start_val=dataval, length=11, pid=0xb))  #DATA1
    packets.append(RxHandshakePacket())

    #Pretend the ACK went missing. Re-send same packet. xCORE should ACK but throw pkt away
    AppendOutToken(packets, ep, inter_pkt_gap=6000)
    packets.append(
        TxDataPacket(rand, data_start_val=dataval, length=11, pid=0xb))  #DATA1
    packets.append(RxHandshakePacket())

    dataval += 11
    AppendOutToken(packets, ep, inter_pkt_gap=6000)
    packets.append(
        TxDataPacket(rand, data_start_val=dataval, length=12, pid=0x3))  #DATA0
    packets.append(RxHandshakePacket())

    dataval += 12
    AppendOutToken(packets, ep, inter_pkt_gap=6000)
    packets.append(
        TxDataPacket(rand, data_start_val=dataval, length=13, pid=0xb))  #DATA1
    packets.append(RxHandshakePacket(timeout=9))

    dataval += 13
    AppendOutToken(packets, ep, inter_pkt_gap=6000)
    packets.append(
        TxDataPacket(rand, data_start_val=dataval, length=14, pid=0x3))  #DATA0
    packets.append(RxHandshakePacket())

    do_rx_test(arch,
               clk,
               phy,
               packets,
               __file__,
               seed,
               level='smoke',
               extra_tasks=[])
def do_test(arch, clk, phy, seed):
    rand = random.Random()
    rand.seed(seed)

    # The inter-frame gap is to give the DUT time to print its output
    packets = []

    data_val = 0
    pkt_length = 20
    data_pid = 0x3  #DATA0

    for pkt_length in range(10, 20):

        #min 237
        AppendOutToken(packets, 3, inter_pkt_gap=1)
        packets.append(
            TxDataPacket(rand,
                         data_start_val=data_val,
                         length=pkt_length,
                         pid=data_pid))  #DATA0
        packets.append(RxHandshakePacket(timeout=9))

        AppendOutToken(packets, 4, inter_pkt_gap=1)
        packets.append(
            TxDataPacket(rand,
                         data_start_val=data_val,
                         length=pkt_length,
                         pid=data_pid))  #DATA0
        packets.append(RxHandshakePacket(timeout=9))

        AppendOutToken(packets, 5, inter_pkt_gap=0)
        packets.append(
            TxDataPacket(rand,
                         data_start_val=data_val,
                         length=pkt_length,
                         pid=data_pid))  #DATA0
        packets.append(RxHandshakePacket(timeout=9))

        AppendOutToken(packets, 6, inter_pkt_gap=0)
        packets.append(
            TxDataPacket(rand,
                         data_start_val=data_val,
                         length=pkt_length,
                         pid=data_pid))  #DATA0
        packets.append(RxHandshakePacket(timeout=9))

        data_val = data_val + pkt_length
        data_pid = data_pid ^ 8

    do_rx_test(arch,
               clk,
               phy,
               packets,
               __file__,
               seed,
               level='smoke',
               extra_tasks=[])
def do_test(arch, clk, phy, seed):

    rand = random.Random()
    rand.seed(seed)

    ep_loopback = 3
    ep_loopback_kill = 2

    # The inter-frame gap is to give the DUT time to print its output
    packets = []

    dataval = 0
    data_pid = 0x3  #DATA0

    for pkt_length in range(0, 20):

        AppendOutToken(packets, ep_loopback)
        packets.append(
            TxDataPacket(rand,
                         data_start_val=dataval,
                         length=pkt_length,
                         pid=data_pid))  #DATA0
        packets.append(RxHandshakePacket(timeout=9))

        # 357 was min IPG supported on bulk loopback to not nak
        # For move from sc_xud to lib_xud (14.1.2 tools) had to increase this to 377
        # Increased again due to setup/out checking
        AppendInToken(packets, ep_loopback, inter_pkt_gap=417)
        packets.append(
            RxDataPacket(rand,
                         data_start_val=dataval,
                         length=pkt_length,
                         pid=data_pid,
                         timeout=9))  #DATA0
        packets.append(TxHandshakePacket())

        data_pid = data_pid ^ 8

    pkt_length = 10

    #Loopback and die..
    AppendOutToken(packets, ep_loopback_kill)
    packets.append(TxDataPacket(rand, length=pkt_length, pid=3))  #DATA0
    packets.append(RxHandshakePacket())

    AppendInToken(packets, ep_loopback_kill, inter_pkt_gap=400)
    packets.append(RxDataPacket(rand, length=pkt_length, pid=3))  #DATA0
    packets.append(TxHandshakePacket())

    do_rx_test(arch,
               clk,
               phy,
               packets,
               __file__,
               seed,
               level='smoke',
               extra_tasks=[])
Ejemplo n.º 8
0
def do_test(mac, arch, rx_clk, rx_phy, tx_clk, tx_phy, seed):
    rand = random.Random()
    rand.seed(seed)

    dut_mac_address = get_dut_mac_address()
    broadcast_mac_address = [0xff, 0xff, 0xff, 0xff, 0xff, 0xff]

    # The inter-frame gap is to give the DUT time to print its output
    packets = []

    for mac_address in [dut_mac_address, broadcast_mac_address]:
        packets.append(
            MiiPacket(rand,
                      dst_mac_addr=mac_address,
                      create_data_args=['step', (1, 72)]))

        packets.append(
            MiiPacket(rand,
                      dst_mac_addr=mac_address,
                      create_data_args=['step', (5, 52)],
                      inter_frame_gap=packet_processing_time(tx_phy, 72, mac)))

        packets.append(
            MiiPacket(rand,
                      dst_mac_addr=mac_address,
                      create_data_args=['step', (7, 1500)],
                      inter_frame_gap=packet_processing_time(tx_phy, 52, mac)))

    # Send enough basic frames to ensure the buffers in the DUT have wrapped
    for i in range(11):
        packets.append(
            MiiPacket(rand,
                      dst_mac_addr=dut_mac_address,
                      create_data_args=['step', (i, 1500)],
                      inter_frame_gap=packet_processing_time(
                          tx_phy, 1500, mac)))

    do_error = True

    # The gigabit RGMII can't handle spurious errors
    if tx_clk.get_rate() == Clock.CLK_125MHz:
        do_error = False

    error_driver = TxError(tx_phy, do_error)

    do_rx_test(mac,
               arch,
               rx_clk,
               rx_phy,
               tx_clk,
               tx_phy,
               packets,
               __file__,
               seed,
               level='smoke',
               extra_tasks=[error_driver])
Ejemplo n.º 9
0
def do_test(mac, arch, rx_clk, rx_phy, tx_clk, tx_phy, seed):
    rand = random.Random()
    rand.seed(seed)

    if tx_clk.get_rate() == Clock.CLK_125MHz:
        # This test is not relevant for gigabit
        return

    dut_mac_address = get_dut_mac_address()

    error_packets = []

    # Part A - Valid packet with an extra nibble (should be accepted)
    error_packets.append(MiiPacket(rand,
        dst_mac_addr=dut_mac_address,
        extra_nibble=True,
        create_data_args=['step', (22, choose_small_frame_size(rand))]
      ))

    # Part B - Invalid packet with an extra nibble (should be reported as alignmentError)
    error_packets.append(MiiPacket(rand,
        dst_mac_addr=dut_mac_address,
        extra_nibble=True, corrupt_crc=True,
        create_data_args=['step', (23, choose_small_frame_size(rand))],
        dropped=True
      ))

    # Part C - Parts A and B with valid frames before/after the errror frame
    packets = []
    for packet in error_packets:
        packets.append(packet)

    ifg = tx_clk.get_min_ifg()
    for i,packet in enumerate(error_packets):
      # First valid frame (allowing time to process previous two valid frames)
      packets.append(MiiPacket(rand,
          dst_mac_addr=dut_mac_address,
          create_data_args=['step', (i%10, choose_small_frame_size(rand))],
          inter_frame_gap=2*packet_processing_time(tx_phy, 46, mac)
        ))

      # Take a copy to ensure that the original is not modified
      packet_copy = copy.deepcopy(packet)

      # Error frame after minimum IFG
      packet_copy.set_ifg(ifg)
      packets.append(packet_copy)

      # Second valid frame with minimum IFG
      packets.append(MiiPacket(rand,
          dst_mac_addr=dut_mac_address,
          create_data_args=['step', (2 * ((i+1)%10), choose_small_frame_size(rand))],
          inter_frame_gap=ifg
        ))

    do_rx_test(mac, arch, rx_clk, rx_phy, tx_clk, tx_phy, packets, __file__, seed)
Ejemplo n.º 10
0
def do_test(arch, clk, phy, seed):
    rand = random.Random()
    rand.seed(seed)

    dev_address = get_dut_address()
    ep = 1

    # The inter-frame gap is to give the DUT time to print its output
    packets = []

    dataval = 0

    # Ping EP 2, expect NAK
    AppendPingToken(packets, 2)
    packets.append(RxHandshakePacket(pid=0x5a))

    # And again
    AppendPingToken(packets, 2)
    packets.append(RxHandshakePacket(pid=0x5a))

    # Send packet to EP 1, xCORE should mark EP 2 as ready
    AppendOutToken(packets, ep)
    packets.append(
        TxDataPacket(rand, data_start_val=dataval, length=10, pid=0x3))  #DATA0
    packets.append(RxHandshakePacket())

    # Ping EP 2 again - expect ACK
    AppendPingToken(packets, 2, inter_pkt_gap=6000)
    packets.append(RxHandshakePacket())

    # And again..
    AppendPingToken(packets, 2)
    packets.append(RxHandshakePacket())

    # Send out to EP 2.. expect ack
    AppendOutToken(packets, 2, inter_pkt_gap=6000)
    packets.append(
        TxDataPacket(rand, data_start_val=dataval, length=10, pid=0x3))  #DATA0
    packets.append(RxHandshakePacket())

    # Re-Ping EP 2, expect NAK
    AppendPingToken(packets, 2)
    packets.append(RxHandshakePacket(pid=0x5a))

    # And again
    AppendPingToken(packets, 2)
    packets.append(RxHandshakePacket(pid=0x5a))

    do_rx_test(arch,
               clk,
               phy,
               packets,
               __file__,
               seed,
               level='smoke',
               extra_tasks=[])
Ejemplo n.º 11
0
def do_test(arch, clk, phy, seed):

    rand = random.Random()
    rand.seed(seed)

    ep_loopback = 3
    ep_loopback_kill = 2

    # The inter-frame gap is to give the DUT time to print its output
    packets = []

    dataval = 0
    data_pid = 0x3  #DATA0

    for pkt_length in range(200, 204):

        AppendOutToken(packets, ep_loopback)
        packets.append(
            TxDataPacket(rand,
                         data_start_val=dataval,
                         length=pkt_length,
                         pid=data_pid))  #DATA0

        #XXwas min IPG supported on iso loopback to not nak
        #This was 420, had to increase when moved to lib_xud (14.1.2 tools)
        # increased again from 437 when SETUP/OUT checking added
        AppendInToken(packets, ep_loopback, inter_pkt_gap=477)
        packets.append(
            RxDataPacket(rand,
                         data_start_val=dataval,
                         length=pkt_length,
                         pid=data_pid,
                         timeout=9))  #DATA0

        #No toggle for Iso

    pkt_length = 10

    #Loopback and die..
    AppendOutToken(packets, ep_loopback_kill)
    packets.append(TxDataPacket(rand, length=pkt_length, pid=3))  #DATA0
    packets.append(RxHandshakePacket())

    AppendInToken(packets, ep_loopback_kill, inter_pkt_gap=397)
    packets.append(RxDataPacket(rand, length=pkt_length, pid=3))  #DATA0
    packets.append(TxHandshakePacket())

    do_rx_test(arch,
               clk,
               phy,
               packets,
               __file__,
               seed,
               level='smoke',
               extra_tasks=[])
Ejemplo n.º 12
0
def do_test(mac, arch, rx_clk, rx_phy, tx_clk, tx_phy, seed):
    rand = random.Random()
    rand.seed(seed)

    dut_mac_address = get_dut_mac_address()

    error_packets = []

    # Part A - maximum jabber size packet
    # Use a valid ether type as the type/len field can't encode the length
    ether_type_ip = [0x08, 0x00]

    # Jabber lengths as defined for 10Mb/s & 100Mb/s
    jabber_length = 9367
    if tx_clk.get_rate() == Clock.CLK_125MHz:
        # Length for 1000Mb/s
        jabber_length = 18742

    error_packets.append(MiiPacket(rand,
        dst_mac_addr=dut_mac_address,
        ether_len_type=ether_type_ip,
        num_preamble_nibbles=7,
        create_data_args=['step', (17, jabber_length)],
        dropped=True
      ))

    # Part B - Part A with valid frames before/after the errror frame
    packets = []
    for packet in error_packets:
        packets.append(packet)

    ifg = tx_clk.get_min_ifg()
    for i,packet in enumerate(error_packets):
      # First valid frame (allowing time to process previous two valid frames)
      packets.append(MiiPacket(rand,
          dst_mac_addr=dut_mac_address,
          create_data_args=['step', (i%10, choose_small_frame_size(rand))],
          inter_frame_gap=2*packet_processing_time(tx_phy, 46, mac)
        ))

      # Take a copy to ensure that the original is not modified
      packet_copy = copy.deepcopy(packet)

      # Error frame after minimum IFG
      packet_copy.set_ifg(ifg)
      packets.append(packet_copy)

      # Second valid frame with minimum IFG
      packets.append(MiiPacket(rand,
          dst_mac_addr=dut_mac_address,
          create_data_args=['step', (2 * ((i+1)%10), choose_small_frame_size(rand))],
          inter_frame_gap=ifg
        ))

    do_rx_test(mac, arch, rx_clk, rx_phy, tx_clk, tx_phy, packets, __file__, seed)
Ejemplo n.º 13
0
def do_test(mac, arch, rx_clk, rx_phy, tx_clk, tx_phy, seed):
    rand = random.Random()
    rand.seed(seed)

    dut_mac_address = get_dut_mac_address()

    error_packets = []

    # Part A - length errors (len/type field value greater than actual data length)
    for (num_data_bytes, len_type, step) in [(46, 47, 20), (46, 1505, 21), (1504, 1505, 22)]:
        error_packets.append(MiiPacket(rand,
            dst_mac_addr=dut_mac_address,
            ether_len_type=[(len_type >> 8) & 0xff, len_type & 0xff],
            create_data_args=['step', (step, num_data_bytes)],
            dropped=True
          ))

        # Also do this for VLAN tagged frames
        error_packets.append(MiiPacket(rand,
            dst_mac_addr=dut_mac_address, vlan_prio_tag=[0x81, 0x00, 0x00, 0x00],
            ether_len_type=[(len_type >> 8) & 0xff, len_type & 0xff],
            create_data_args=['step', (step, num_data_bytes)],
            dropped=True
          ))

    # Part B - Part A with valid frames before/after the errror frame
    packets = []
    for packet in error_packets:
        packets.append(packet)

    ifg = tx_clk.get_min_ifg()
    for i,packet in enumerate(error_packets):
      # First valid frame (allowing time to process previous two valid frames)
      packets.append(MiiPacket(rand,
          dst_mac_addr=dut_mac_address,
          create_data_args=['step', (i%10, choose_small_frame_size(rand))],
          inter_frame_gap=2*packet_processing_time(tx_phy, 46, mac)
        ))

      # Take a copy to ensure that the original is not modified
      packet_copy = copy.deepcopy(packet)

      # Error frame after minimum IFG
      packet_copy.set_ifg(ifg)
      packets.append(packet_copy)

      # Second valid frame with minimum IFG
      packets.append(MiiPacket(rand,
          dst_mac_addr=dut_mac_address,
          create_data_args=['step', (2 * ((i+1)%10), choose_small_frame_size(rand))],
          inter_frame_gap=ifg
        ))

    do_rx_test(mac, arch, rx_clk, rx_phy, tx_clk, tx_phy, packets, __file__, seed)
Ejemplo n.º 14
0
def do_test(mac, arch, rx_clk, rx_phy, tx_clk, tx_phy, seed):
    rand = random.Random()
    rand.seed(seed)

    dut_mac_address = get_dut_mac_address()

    packets = []

    ifg = tx_clk.get_min_ifg()

    # Part A - Ensure that two packets separated by minimum IFG are received ok
    packets.append(
        MiiPacket(rand,
                  dst_mac_addr=dut_mac_address,
                  create_data_args=[
                      'step',
                      (rand.randint(1, 254), choose_small_frame_size(rand))
                  ]))
    packets.append(
        MiiPacket(rand,
                  dst_mac_addr=dut_mac_address,
                  create_data_args=[
                      'step',
                      (rand.randint(1, 254), choose_small_frame_size(rand))
                  ],
                  inter_frame_gap=ifg))

    # Part B - Determine the minimum IFG that can be supported
    bit_time = ifg / 96

    # Allow lots of time for the DUT to recover between test bursts
    recovery_time = 4 * packet_processing_time(tx_phy, 46, mac)

    # Test shrinking the IFG by different amounts. Use the shrink as the step for debug purposes
    for gap_shrink in [5, 10]:
        new_ifg = ifg - gap_shrink * bit_time

        packets.append(
            MiiPacket(rand,
                      dst_mac_addr=dut_mac_address,
                      create_data_args=[
                          'step', (gap_shrink, choose_small_frame_size(rand))
                      ],
                      inter_frame_gap=recovery_time))
        packets.append(
            MiiPacket(rand,
                      dst_mac_addr=dut_mac_address,
                      create_data_args=[
                          'step', (gap_shrink, choose_small_frame_size(rand))
                      ],
                      inter_frame_gap=new_ifg))

    do_rx_test(mac, arch, rx_clk, rx_phy, tx_clk, tx_phy, packets, __file__,
               seed)
Ejemplo n.º 15
0
def do_test(mac, arch, rx_clk, rx_phy, tx_clk, tx_phy, seed):
    rand = random.Random()
    rand.seed(seed)

    dut_mac_address = get_dut_mac_address()

    error_packets = []

    # Part A - Invalid SFD nibble: use preamble nibble (0x5)
    error_packets.append(MiiPacket(rand,
        dst_mac_addr=dut_mac_address,
        sfd_nibble=0x5,
        create_data_args=['step', (19, choose_small_frame_size(rand))],
        dropped=True
      ))

    # Part B - Invalid SFD: replace last byte of preamble with 0x9 instead of 0x5
    error_packets.append(MiiPacket(rand,
        dst_mac_addr=dut_mac_address,
        preamble_nibbles=[0x5 for x in range(14)] + [0x9],
        create_data_args=['step', (20, choose_small_frame_size(rand))],
        dropped=True
      ))

    # Part C - Parts A and B with valid frames before/after the errror frame
    packets = []
    for packet in error_packets:
        packets.append(packet)

    ifg = tx_clk.get_min_ifg()
    for i,packet in enumerate(error_packets):
      # First valid frame (allowing time to process previous two valid frames)
      packets.append(MiiPacket(rand,
          dst_mac_addr=dut_mac_address,
          create_data_args=['step', (i%10, choose_small_frame_size(rand))],
          inter_frame_gap=2*packet_processing_time(tx_phy, 46, mac)
        ))

      # Take a copy to ensure that the original is not modified
      packet_copy = copy.deepcopy(packet)

      # Error frame after minimum IFG
      packet_copy.set_ifg(ifg)
      packets.append(packet_copy)

      # Second valid frame with minimum IFG
      packets.append(MiiPacket(rand,
          dst_mac_addr=dut_mac_address,
          create_data_args=['step', (2 * ((i+1)%10), choose_small_frame_size(rand))],
          inter_frame_gap=ifg
        ))

    do_rx_test(mac, arch, rx_clk, rx_phy, tx_clk, tx_phy, packets, __file__, seed)
def do_test(arch, tx_clk, tx_phy, seed):
    rand = random.Random()
    rand.seed(seed)

    dev_address = get_dut_address()
    ep = 0

    # The inter-frame gap is to give the DUT time to print its output
    packets = []

    AppendSetupToken(packets, ep)
    packets.append(TxDataPacket(rand, length=3, pid=3, bad_crc=True))
    #packets.append(RxHandshakePacket())

    AppendSetupToken(packets, ep)
    packets.append(TxDataPacket(rand, length=8, pid=3, bad_crc=False))
    packets.append(RxHandshakePacket(timeout=11))

    # Note, quite big gap to allow checking.

    packets.append(
        TokenPacket(
            inter_pkt_gap=2000,
            pid=0xe1,  #OUT
            address=dev_address,
            endpoint=ep))

    packets.append(TxDataPacket(rand, length=10, pid=0xb))

    packets.append(RxHandshakePacket())

    packets.append(
        TokenPacket(
            inter_pkt_gap=2000,
            pid=0x69,  #OUT
            address=dev_address,
            endpoint=ep))

    #Expect 0-length
    packets.append(RxDataPacket(rand, length=0, pid=0x4b))

    # Send ACK
    packets.append(TxHandshakePacket())

    do_rx_test(arch,
               tx_clk,
               tx_phy,
               packets,
               __file__,
               seed,
               level='smoke',
               extra_tasks=[])
Ejemplo n.º 17
0
def do_test(mac, arch, rx_clk, rx_phy, tx_clk, tx_phy, seed):
    rand = random.Random()
    rand.seed(seed)

    dut_mac_address = get_dut_mac_address()

    excess_pad_packets = []

    # Part A - excessive pad
    processing_time = 0
    # These packets should not be dropped (though the standard is ambiguous). The length, however
    # should be reported as the length specified in the len/type field.
    for (num_data_bytes, len_type, step) in [(47, 46, 20), (1504, 46, 21), (1504, 1503, 22)]:
        excess_pad_packets.append(MiiPacket(rand,
            dst_mac_addr=dut_mac_address,
            ether_len_type=[(len_type >> 8) & 0xff, len_type & 0xff],
            create_data_args=['step', (step, num_data_bytes)],
            inter_frame_gap=processing_time
          ))

        # Update packet processing time so that next packet leaves enough time before starting
        processing_time = packet_processing_time(tx_phy, num_data_bytes, mac)

    # Part B - Part A with valid frames before/after the errror frame
    packets = []
    for packet in excess_pad_packets:
        packets.append(packet)

    ifg = tx_clk.get_min_ifg()
    for i,packet in enumerate(excess_pad_packets):
      # First valid frame (allowing time to process previous two valid frames)
      packets.append(MiiPacket(rand,
          dst_mac_addr=dut_mac_address,
          create_data_args=['step', (i%10, choose_small_frame_size(rand))],
          inter_frame_gap=2*packet_processing_time(tx_phy, 46, mac) + packet_processing_time(tx_phy, 1518, mac)
        ))

      # Take a copy to ensure that the original is not modified
      packet_copy = copy.deepcopy(packet)

      # Error frame after minimum IFG
      packet_copy.set_ifg(ifg)
      packets.append(packet_copy)

      # Second valid frame with minimum IFG
      packets.append(MiiPacket(rand,
          dst_mac_addr=dut_mac_address,
          create_data_args=['step', (2 * ((i+1)%10), choose_small_frame_size(rand))],
          inter_frame_gap=ifg
        ))

    do_rx_test(mac, arch, rx_clk, rx_phy, tx_clk, tx_phy, packets, __file__, seed)
Ejemplo n.º 18
0
def do_test(mac, arch, rx_clk, rx_phy, tx_clk, tx_phy, seed):
    rand = random.Random()
    rand.seed(seed)

    dut_mac_address = get_dut_mac_address()

    packets = []

    # Part A - Test the sending of all valid size untagged frames
    processing_time = packet_processing_time(tx_phy, 46, mac)
    for num_data_bytes in [46, choose_small_frame_size(rand), 1500]:
        packets.append(
            MiiPacket(rand,
                      dst_mac_addr=dut_mac_address,
                      create_data_args=[
                          'step', (rand.randint(1, 254), num_data_bytes)
                      ],
                      inter_frame_gap=processing_time))
        processing_time = packet_processing_time(tx_phy, num_data_bytes, mac)

    # Part B - Test the sending of sub 46 bytes of data in the length field but valid minimum packet sizes
    # The packet sizes longer than this are covered by Part A
    for len_type in [1, 2, 3, 4, 15, 45]:
        packets.append(
            MiiPacket(rand,
                      dst_mac_addr=dut_mac_address,
                      ether_len_type=[(len_type >> 8) & 0xff, len_type & 0xff],
                      create_data_args=['step', (rand.randint(1, 254), 46)],
                      inter_frame_gap=packet_processing_time(tx_phy, 46, mac)))

    # Part C - Test the sending of all valid size tagged frames
    processing_time = packet_processing_time(tx_phy, 46, mac)
    for num_data_bytes in [42, choose_small_frame_size(rand), 1500]:
        packets.append(
            MiiPacket(rand,
                      dst_mac_addr=dut_mac_address,
                      vlan_prio_tag=[0x81, 0x00, 0x00, 0x00],
                      create_data_args=[
                          'step', (rand.randint(1, 254), num_data_bytes)
                      ],
                      inter_frame_gap=processing_time))
        processing_time = packet_processing_time(tx_phy, num_data_bytes, mac)

    # Part D
    # Not supporting 802.3-2012, so no envelope frames

    # Part E
    # Not doing half duplex 1000Mb/s, so don't test this

    do_rx_test(mac, arch, rx_clk, rx_phy, tx_clk, tx_phy, packets, __file__,
               seed)
def do_test(arch, tx_clk, tx_phy, seed):
    rand = random.Random()
    rand.seed(seed)

    dev_address = get_dut_address()
    ep = 0

    # The inter-frame gap is to give the DUT time to print its output
    packets = []

    AppendSetupToken(packets, ep)

    # DATA0 data packet with bad CRC
    packets.append(TxDataPacket(rand, length=8, pid=3, bad_crc=True))

    # Dont expect an ACK due to bad CRC
    #packets.append(RxHandshakePacket())

    AppendSetupToken(packets, ep, inter_pkt_gap=400)
    packets.append(TxDataPacket(rand, length=8, pid=3, bad_crc=False))
    packets.append(RxHandshakePacket(timeout=11))

    # Note, quite big gap to allow checking.

    AppendOutToken(packets, ep, inter_pkt_gap=2000)

    packets.append(TxDataPacket(rand, length=10, pid=0xb))

    packets.append(RxHandshakePacket())

    #IN
    AppendInToken(packets, ep, inter_pkt_gap=500)

    #Expect 0-length
    packets.append(RxDataPacket(rand, length=0, pid=0x4b))

    # Send ACK
    packets.append(TxHandshakePacket())

    do_rx_test(arch,
               tx_clk,
               tx_phy,
               packets,
               __file__,
               seed,
               level='smoke',
               extra_tasks=[])
Ejemplo n.º 20
0
def do_test(mac, arch, rx_clk, rx_phy, tx_clk, tx_phy, seed):
    rand = random.Random()
    rand.seed(seed)

    dut_mac_address = get_dut_mac_address()
    broadcast_mac_address = [0xff, 0xff, 0xff, 0xff, 0xff, 0xff]

    # The inter-frame gap is to give the DUT time to print its output
    packets = []

    for mac_address in [dut_mac_address, broadcast_mac_address]:
        packets.append(MiiPacket(rand,
            dst_mac_addr=mac_address,
            create_data_args=['step', (1, 72)]
          ))

        packets.append(MiiPacket(rand,
            dst_mac_addr=mac_address,
            create_data_args=['step', (5, 52)],
            inter_frame_gap=packet_processing_time(tx_phy, 72, mac)
          ))

        packets.append(MiiPacket(rand,
            dst_mac_addr=mac_address,
            create_data_args=['step', (7, 1500)],
            inter_frame_gap=packet_processing_time(tx_phy, 52, mac)
          ))

    # Send enough basic frames to ensure the buffers in the DUT have wrapped
    for i in range(11):
        packets.append(MiiPacket(rand,
            dst_mac_addr=dut_mac_address,
            create_data_args=['step', (i, 1500)],
            inter_frame_gap=packet_processing_time(tx_phy, 1500, mac)
        ))

    do_error = True

    # The gigabit RGMII can't handle spurious errors
    if tx_clk.get_rate() == Clock.CLK_125MHz:
        do_error = False

    error_driver = TxError(tx_phy, do_error)

    do_rx_test(mac, arch, rx_clk, rx_phy, tx_clk, tx_phy, packets, __file__, seed,
               level='smoke', extra_tasks=[error_driver])
Ejemplo n.º 21
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def do_test(mac, arch, rx_clk, rx_phy, tx_clk, tx_phy, seed):
    rand = random.Random()
    rand.seed(seed)

    dut_mac_address = get_dut_mac_address()

    packets = []

    # Part A - Test the sending of all valid size untagged frames
    processing_time = packet_processing_time(tx_phy, 46, mac)
    for num_data_bytes in [46, choose_small_frame_size(rand), 1500]:
        packets.append(MiiPacket(rand,
            dst_mac_addr=dut_mac_address,
            create_data_args=['step', (rand.randint(1, 254), num_data_bytes)],
            inter_frame_gap=processing_time
          ))
        processing_time = packet_processing_time(tx_phy, num_data_bytes, mac)

    # Part B - Test the sending of sub 46 bytes of data in the length field but valid minimum packet sizes
    # The packet sizes longer than this are covered by Part A
    for len_type in [1, 2, 3, 4, 15, 45]:
        packets.append(MiiPacket(rand,
            dst_mac_addr=dut_mac_address,
            ether_len_type=[(len_type >> 8) & 0xff, len_type & 0xff],
            create_data_args=['step', (rand.randint(1, 254), 46)],
            inter_frame_gap=packet_processing_time(tx_phy, 46, mac)
          ))

    # Part C - Test the sending of all valid size tagged frames
    processing_time = packet_processing_time(tx_phy, 46, mac)
    for num_data_bytes in [42, choose_small_frame_size(rand), 1500]:
        packets.append(MiiPacket(rand,
            dst_mac_addr=dut_mac_address,
            vlan_prio_tag=[0x81, 0x00, 0x00, 0x00],
            create_data_args=['step', (rand.randint(1, 254), num_data_bytes)],
            inter_frame_gap=processing_time
          ))
        processing_time = packet_processing_time(tx_phy, num_data_bytes, mac)

    # Part D
    # Not supporting 802.3-2012, so no envelope frames

    # Part E
    # Not doing half duplex 1000Mb/s, so don't test this
        
    do_rx_test(mac, arch, rx_clk, rx_phy, tx_clk, tx_phy, packets, __file__, seed)
Ejemplo n.º 22
0
def do_test(arch, clk, phy, seed):
    rand = random.Random()
    rand.seed(seed)

    ep = 2

    # The inter-frame gap is to give the DUT time to print its output
    packets = []

    dataval = 0

    AppendOutToken(packets, ep)
    packets.append(
        TxDataPacket(rand, data_start_val=dataval, length=10, pid=0x3))  #DATA0

    # Note, quite big gap to allow checking.

    dataval += 10
    AppendOutToken(packets, ep, inter_pkt_gap=6000)
    packets.append(
        TxDataPacket(rand, data_start_val=dataval, length=11, pid=0x3))  #DATA0

    dataval += 11
    AppendOutToken(packets, ep, inter_pkt_gap=6000)
    packets.append(
        TxDataPacket(rand, data_start_val=dataval, length=12, pid=0x3))  #DATA0

    dataval += 12
    AppendOutToken(packets, ep, inter_pkt_gap=6000)
    packets.append(
        TxDataPacket(rand, data_start_val=dataval, length=13, pid=0x3))  #DATA0

    dataval += 13
    AppendOutToken(packets, ep, inter_pkt_gap=6000)
    packets.append(
        TxDataPacket(rand, data_start_val=dataval, length=14, pid=0x3))  #DATA0

    do_rx_test(arch,
               clk,
               phy,
               packets,
               __file__,
               seed,
               level='smoke',
               extra_tasks=[])
Ejemplo n.º 23
0
def do_test(arch, clk, phy, seed):
    rand = random.Random()
    rand.seed(seed)

    ep = 3

    packets = []

    data_val = 0
    pkt_length = 20
    data_pid = 0x3  #DATA0

    for pkt_length in range(10, 20):

        # < 17 fails for SI
        # < 37 fails for DI
        AppendOutToken(packets, ep, inter_pkt_gap=37)
        packets.append(
            TxDataPacket(rand,
                         data_start_val=data_val,
                         length=pkt_length,
                         pid=data_pid))  #DATA0
        # 9 works for SI
        packets.append(RxHandshakePacket(timeout=10))

        AppendInToken(packets, ep, inter_pkt_gap=0)
        packets.append(
            RxDataPacket(rand,
                         data_start_val=data_val,
                         length=pkt_length,
                         pid=data_pid))
        packets.append(TxHandshakePacket())

        data_val = data_val + pkt_length
        data_pid = data_pid ^ 8

    do_rx_test(arch,
               clk,
               phy,
               packets,
               __file__,
               seed,
               level='smoke',
               extra_tasks=[])
Ejemplo n.º 24
0
def do_test(mac, arch, rx_clk, rx_phy, tx_clk, tx_phy, seed):
    rand = random.Random()
    rand.seed(seed)

    dut_mac_address = get_dut_mac_address()

    packets = []

    ifg = tx_clk.get_min_ifg()

    # Part A - Ensure that two packets separated by minimum IFG are received ok
    packets.append(MiiPacket(rand,
        dst_mac_addr=dut_mac_address,
        create_data_args=['step', (rand.randint(1, 254), choose_small_frame_size(rand))]
      ))
    packets.append(MiiPacket(rand,
        dst_mac_addr=dut_mac_address,
        create_data_args=['step', (rand.randint(1, 254), choose_small_frame_size(rand))],
        inter_frame_gap=ifg
      ))

    # Part B - Determine the minimum IFG that can be supported
    bit_time = ifg/96

    # Allow lots of time for the DUT to recover between test bursts
    recovery_time = 4*packet_processing_time(tx_phy, 46, mac)

    # Test shrinking the IFG by different amounts. Use the shrink as the step for debug purposes
    for gap_shrink in [5, 10]:
        new_ifg = ifg - gap_shrink * bit_time

        packets.append(MiiPacket(rand,
            dst_mac_addr=dut_mac_address,
            create_data_args=['step', (gap_shrink, choose_small_frame_size(rand))],
            inter_frame_gap=recovery_time
          ))
        packets.append(MiiPacket(rand,
            dst_mac_addr=dut_mac_address,
            create_data_args=['step', (gap_shrink, choose_small_frame_size(rand))],
            inter_frame_gap=new_ifg
          ))

    do_rx_test(mac, arch, rx_clk, rx_phy, tx_clk, tx_phy, packets, __file__, seed)
Ejemplo n.º 25
0
def do_test(mac, arch, rx_clk, rx_phy, tx_clk, tx_phy, seed):
    rand = random.Random()
    rand.seed(seed)

    dut_mac_address = get_dut_mac_address()

    packets = []

    # Part A
    packets.append(
        MiiPacket(
            rand,
            create_data_args=['step', (3, choose_small_frame_size(rand))],
            corrupt_crc=True,
            dropped=True))

    # Part B
    packets.append(
        MiiPacket(
            rand,
            create_data_args=['step', (4, choose_small_frame_size(rand))]))

    packets.append(
        MiiPacket(
            rand,
            inter_frame_gap=tx_clk.get_min_ifg(),
            create_data_args=['step', (5, choose_small_frame_size(rand))],
            corrupt_crc=True,
            dropped=True))

    packets.append(
        MiiPacket(
            rand,
            inter_frame_gap=tx_clk.get_min_ifg(),
            create_data_args=['step', (6, choose_small_frame_size(rand))]))

    # Set all the destination MAC addresses to get through the filtering
    for packet in packets:
        packet.dst_mac_addr = dut_mac_address

    do_rx_test(mac, arch, rx_clk, rx_phy, tx_clk, tx_phy, packets, __file__,
               seed)
def do_test(arch, clk, phy, seed):
    rand = random.Random()
    rand.seed(seed)

    start_ep = 3
    
    # The inter-frame gap is to give the DUT time to print its output
    packets = []

    data_val = 0;
    pkt_length = 20
    data_pid = 0x3 #DATA0 

    for pkt_length in range(10, 20):
        
        #Single EP:
        #317 lowest for valid data (SI)
        #337 for initial DI version
        
        #Multi EP:
        #177 lowest for valid data (DI)
        AppendInToken(packets, start_ep, inter_pkt_gap=177)
        packets.append(RxDataPacket(rand, data_start_val=data_val, length=pkt_length, pid=data_pid))
        packets.append(TxHandshakePacket())

        AppendInToken(packets, start_ep+1, inter_pkt_gap=177)
        packets.append(RxDataPacket(rand, data_start_val=data_val, length=pkt_length, pid=data_pid))
        packets.append(TxHandshakePacket())
       
        AppendInToken(packets, start_ep+2, inter_pkt_gap=177)
        packets.append(RxDataPacket(rand, data_start_val=data_val, length=pkt_length, pid=data_pid))
        packets.append(TxHandshakePacket())
      
        AppendInToken(packets, start_ep+3, inter_pkt_gap=177)
        packets.append(RxDataPacket(rand, data_start_val=data_val, length=pkt_length, pid=data_pid))
        packets.append(TxHandshakePacket())
       
        data_val = data_val + pkt_length
        data_pid = data_pid ^ 8

    do_rx_test(arch, clk, phy, packets, __file__, seed,
               level='smoke', extra_tasks=[])
def do_test(arch, tx_clk, tx_phy, seed):
    rand = random.Random()
    rand.seed(seed)

    ep = 0

    # The inter-frame gap is to give the DUT time to print its output
    packets = []

    # SETUP transaction
    AppendSetupToken(packets, ep)
    packets.append(TxDataPacket(rand, length=8, pid=3))
    packets.append(RxHandshakePacket(timeout=11))

    # IN transaction
    # Note, quite big gap to allow checking.
    packets.append(TokenPacket(
        inter_pkt_gap=2000,
        pid=0x69,  #IN
        endpoint=ep))
    packets.append(RxDataPacket(rand, length=10, pid=0x4b))
    packets.append(TxHandshakePacket())

    # Send 0 length OUT transaction
    packets.append(TokenPacket(
        inter_pkt_gap=2000,
        pid=0xe1,  #OUT
        endpoint=ep))
    packets.append(TxDataPacket(rand, length=0, pid=0xb))
    packets.append(RxHandshakePacket())

    # Send ACK
    packets.append(TxHandshakePacket())

    do_rx_test(arch,
               tx_clk,
               tx_phy,
               packets,
               __file__,
               seed,
               level='smoke',
               extra_tasks=[])
Ejemplo n.º 28
0
def do_test(mac, arch, rx_clk, rx_phy, tx_clk, tx_phy, seed):
    rand = random.Random()
    rand.seed(seed)

    dut_mac_address = get_dut_mac_address()

    packets = []

    # Part A
    packets.append(MiiPacket(rand,
        create_data_args=['step', (3, choose_small_frame_size(rand))],
        corrupt_crc=True,
        dropped=True
      ))

    # Part B
    packets.append(MiiPacket(rand,
        create_data_args=['step', (4, choose_small_frame_size(rand))]
      ))

    packets.append(MiiPacket(rand,
        inter_frame_gap=tx_clk.get_min_ifg(),
        create_data_args=['step', (5, choose_small_frame_size(rand))],
        corrupt_crc=True,
        dropped=True
      ))

    packets.append(MiiPacket(rand,
        inter_frame_gap=tx_clk.get_min_ifg(),
        create_data_args=['step', (6, choose_small_frame_size(rand))]
      ))

    # Set all the destination MAC addresses to get through the filtering
    for packet in packets:
        packet.dst_mac_addr = dut_mac_address

    do_rx_test(mac, arch, rx_clk, rx_phy, tx_clk, tx_phy, packets, __file__, seed)
Ejemplo n.º 29
0
def do_test(mac, arch, rx_clk, rx_phy, tx_clk, tx_phy, seed):
    rand = random.Random()
    rand.seed(seed)

    dut_mac_address = get_dut_mac_address()

    packets = []

    # Part A - Send different length preambles and ensure the packets are still received
    # Check a selection of preamble lengths from 1 byte to 64 bytes (including SFD)
    test_lengths = [3, 4, 5, 61, 127]
    if tx_clk.get_rate() == Clock.CLK_125MHz:
        # The RGMII requires a longer preamble
        test_lengths = [5, 7, 9, 61, 127]

    for num_preamble_nibbles in test_lengths:
        packets.append(MiiPacket(rand,
            dst_mac_addr=dut_mac_address,
            num_preamble_nibbles=num_preamble_nibbles,
            create_data_args=['step', (rand.randint(1, 254), choose_small_frame_size(rand))],
            inter_frame_gap=packet_processing_time(tx_phy, 46, mac)
          ))

    do_rx_test(mac, arch, rx_clk, rx_phy, tx_clk, tx_phy, packets, __file__, seed)
def do_test(arch, clk, phy, seed):
    rand = random.Random()
    rand.seed(seed)

    ep = 3

    # The inter-frame gap is to give the DUT time to print its output
    packets = []

    data_val = 0
    pkt_length = 20
    data_pid = 0x3  #DATA0

    for pkt_length in range(10, 20):

        #317 lowest for valid data (non-dual issue version)
        #337 for initial dual-issue version
        AppendInToken(packets, ep, inter_pkt_gap=337)
        packets.append(
            RxDataPacket(rand,
                         data_start_val=data_val,
                         length=pkt_length,
                         pid=data_pid))
        packets.append(TxHandshakePacket())

        data_val = data_val + pkt_length
        data_pid = data_pid ^ 8

    do_rx_test(arch,
               clk,
               phy,
               packets,
               __file__,
               seed,
               level='smoke',
               extra_tasks=[])
Ejemplo n.º 31
0
def do_test(mac, arch, rx_clk, rx_phy, tx_clk, tx_phy, seed):
    rand = random.Random()
    rand.seed(seed)

    dut_mac_address = get_dut_mac_address()

    # Part A
    error_packets = []

    # Test Frame 1 - Fragments (no SFD, no valid CRC)
    max_fragment_len = 143
    if tx_clk.get_rate == Clock.CLK_125MHz:
        max_fragment_len = 142

    # Incrememnt is meant to be 1, but for pragmatic reasons just test a subset of options (range(2, max_fragment_len, 1))
    for m in [2, max_fragment_len/3, max_fragment_len/2, max_fragment_len]:
      error_packets.append(MiiPacket(rand,
          num_preamble_nibbles=m, num_data_bytes=0,
          sfd_nibble=None, dst_mac_addr=[], src_mac_addr=[], ether_len_type=[],
          send_crc_word=False,
          dropped=True
        ))

    # Test Frame 2 - Runts - undersized data with a valid CRC
    # NOTES:
    #  - Take 4 off the data length to leave room for the CRC
    #  - The data contents will be the DUT MAC address when long enough to contain a dst address
    # Incrememnt is meant to be 1, but for pragmatic reasons just test a subset of options (range(5, 45, 1))
    for n in [5, 25, 45]:
      error_packets.append(MiiPacket(rand,
          dst_mac_addr=[], src_mac_addr=[], ether_len_type=[],
          data_bytes=[(x & 0xff) for x in range(n - 4)],
          dropped=True
        ))

    # There should have been no errors logged by the MAC
    #controller.dumpStats()

    # Part B

    # Test Frame 5 - send a 7-octect preamble
    error_packets.append(MiiPacket(rand,
        num_preamble_nibbles=15, num_data_bytes=0,
        sfd_nibble=None, dst_mac_addr=[], src_mac_addr=[],
        ether_len_type=[], send_crc_word=False,
        dropped=True
      ))

    # Test Frame 6 - send a 7-octect preamble with SFD
    error_packets.append(MiiPacket(rand,
        num_preamble_nibbles=15, num_data_bytes=0,
        dst_mac_addr=[], src_mac_addr=[],
        ether_len_type=[], send_crc_word=False,
        dropped=True
      ))

    # Test Frame 7 - send a 7-octect preamble with SFD and dest MAC
    error_packets.append(MiiPacket(rand,
        num_preamble_nibbles=15, num_data_bytes=6,
        dst_mac_addr=dut_mac_address,
        src_mac_addr=[], ether_len_type=[], send_crc_word=False,
        dropped=True
      ))

    # Test Frame 8 - send a 7-octect preamble with SFD, dest and src MAC
    error_packets.append(MiiPacket(rand,
        num_preamble_nibbles=15, num_data_bytes=12,
        dst_mac_addr=dut_mac_address,
        ether_len_type=[], send_crc_word=False,
        dropped=True
      ))

    # There should have been no errors logged by the MAC
    #controller.dumpStats()

    # Part C
    # Don't support flow control - so don't run

    # Part D
    # Parts A & B with valid frames before/after the errror frame
    packets = []
    for packet in error_packets:
        packets.append(packet)

    ifg = tx_clk.get_min_ifg()
    for i,packet in enumerate(error_packets):
      # First valid frame (allowing time to process previous two valid frames)
      packets.append(MiiPacket(rand,
          dst_mac_addr=dut_mac_address,
          create_data_args=['step', (i%10, 46)],
          inter_frame_gap=2*packet_processing_time(tx_phy, 46, mac)
        ))

      # Take a copy to ensure that the original is not modified
      packet_copy = copy.deepcopy(packet)

      # Error frame after minimum IFG
      packet_copy.set_ifg(ifg)
      packets.append(packet_copy)

      # Second valid frame with minimum IFG
      packets.append(MiiPacket(rand,
          dst_mac_addr=dut_mac_address,
          create_data_args=['step', (2 * ((i+1)%10), 46)],
          inter_frame_gap=ifg
        ))

    do_rx_test(mac, arch, rx_clk, rx_phy, tx_clk, tx_phy, packets, __file__, seed)
def do_test(arch, tx_clk, tx_phy, seed):
    rand = random.Random()
    rand.seed(seed)

    dev_address = get_dut_address()
    ep = 1

    # The inter-frame gap is to give the DUT time to print its output
    packets = []

    dataval = 0

    AppendOutToken(packets, ep)
    packets.append(
        TxDataPacket(rand, data_start_val=dataval, length=10, pid=0x3))  #DATA0
    packets.append(RxHandshakePacket())

    # Assert RxError during packet
    dataval += 10
    AppendOutToken(packets, ep, inter_pkt_gap=6000)
    packets.append(
        TxDataPacket(rand,
                     data_start_val=dataval,
                     length=11,
                     pid=0xb,
                     rxe_assert_time=5))  #DATA1

    # xCORE should ignore the packet and not handshake...
    #packets.append(RxHandshakePacket())

    # Re-send..
    AppendOutToken(packets, ep, inter_pkt_gap=6000)
    packets.append(
        TxDataPacket(rand,
                     data_start_val=dataval,
                     length=11,
                     pid=0xb,
                     rxe_assert_time=0))  #DATA1
    packets.append(RxHandshakePacket())

    dataval += 11
    AppendOutToken(packets, ep, inter_pkt_gap=6000)
    packets.append(
        TxDataPacket(rand, data_start_val=dataval, length=12, pid=0x3))  #DATA0
    packets.append(RxHandshakePacket(timeout=9))

    dataval += 12
    AppendOutToken(packets, ep, inter_pkt_gap=6000)
    packets.append(
        TxDataPacket(rand,
                     data_start_val=dataval,
                     length=13,
                     pid=0xb,
                     rxe_assert_time=1))  #DATA1
    #packets.append(RxHandshakePacket())

    #resend
    AppendOutToken(packets, ep, inter_pkt_gap=6000)
    packets.append(
        TxDataPacket(rand, data_start_val=dataval, length=13, pid=0xb))  #DATA1
    packets.append(RxHandshakePacket())

    dataval += 13
    AppendOutToken(packets, ep, inter_pkt_gap=6000)
    packets.append(
        TxDataPacket(rand, data_start_val=dataval, length=14, pid=0x3))  #DATA0
    packets.append(RxHandshakePacket())

    do_rx_test(arch,
               tx_clk,
               tx_phy,
               packets,
               __file__,
               seed,
               level='smoke',
               extra_tasks=[])
Ejemplo n.º 33
0
def do_test(mac, arch, rx_clk, rx_phy, tx_clk, tx_phy, seed):
    rand = random.Random()
    rand.seed(seed)

    dut_mac_address = get_dut_mac_address()

    error_packets = []

    # Part A - length errors (len/type field value greater than actual data length)
    for (num_data_bytes, len_type, step) in [(46, 47, 20), (46, 1505, 21),
                                             (1504, 1505, 22)]:
        error_packets.append(
            MiiPacket(rand,
                      dst_mac_addr=dut_mac_address,
                      ether_len_type=[(len_type >> 8) & 0xff, len_type & 0xff],
                      create_data_args=['step', (step, num_data_bytes)],
                      dropped=True))

        # Also do this for VLAN tagged frames
        error_packets.append(
            MiiPacket(rand,
                      dst_mac_addr=dut_mac_address,
                      vlan_prio_tag=[0x81, 0x00, 0x00, 0x00],
                      ether_len_type=[(len_type >> 8) & 0xff, len_type & 0xff],
                      create_data_args=['step', (step, num_data_bytes)],
                      dropped=True))

    # Part B - Part A with valid frames before/after the errror frame
    packets = []
    for packet in error_packets:
        packets.append(packet)

    ifg = tx_clk.get_min_ifg()
    for i, packet in enumerate(error_packets):
        # First valid frame (allowing time to process previous two valid frames)
        packets.append(
            MiiPacket(rand,
                      dst_mac_addr=dut_mac_address,
                      create_data_args=[
                          'step', (i % 10, choose_small_frame_size(rand))
                      ],
                      inter_frame_gap=2 *
                      packet_processing_time(tx_phy, 46, mac)))

        # Take a copy to ensure that the original is not modified
        packet_copy = copy.deepcopy(packet)

        # Error frame after minimum IFG
        packet_copy.set_ifg(ifg)
        packets.append(packet_copy)

        # Second valid frame with minimum IFG
        packets.append(
            MiiPacket(rand,
                      dst_mac_addr=dut_mac_address,
                      create_data_args=[
                          'step',
                          (2 * ((i + 1) % 10), choose_small_frame_size(rand))
                      ],
                      inter_frame_gap=ifg))

    do_rx_test(mac, arch, rx_clk, rx_phy, tx_clk, tx_phy, packets, __file__,
               seed)
Ejemplo n.º 34
0
def do_test(mac, arch, rx_clk, rx_phy, tx_clk, tx_phy, seed):
    rand = random.Random()
    rand.seed(seed)

    dut_mac_address = get_dut_mac_address()

    error_packets = []

    # Test that packets where the RXER line goes high are dropped even
    # if the rest of the packet is valid

    # Error on the first nibble of the preamble
    num_data_bytes = choose_small_frame_size(rand)
    error_packets.append(MiiPacket(rand,
        dst_mac_addr=dut_mac_address,
        num_data_bytes=num_data_bytes,
        error_nibbles=[0],
        dropped=True
      ))

    # Error somewhere in the middle of the packet
    num_data_bytes = choose_small_frame_size(rand)
    error_packets.append(MiiPacket(rand,
        dst_mac_addr=dut_mac_address,
        num_data_bytes=num_data_bytes,
        dropped=True
      ))
    packet = error_packets[-1]
    error_nibble = rand.randint(packet.num_preamble_nibbles + 1, len(packet.get_nibbles()))
    packet.error_nibbles = [error_nibble]

    # Due to BUG 16233 the RGMII code won't always detect an error in the last two bytes
    num_data_bytes = choose_small_frame_size(rand)
    error_packets.append(MiiPacket(rand,
        dst_mac_addr=dut_mac_address,
        num_data_bytes=num_data_bytes,
        dropped=True
      ))
    packet = error_packets[-1]
    packet.error_nibbles = [len(packet.get_nibbles()) - 5]

    # Now run all packets with valid frames before/after the errror frame to ensure the
    # errors don't interfere with valid frames
    packets = []
    for packet in error_packets:
        packets.append(packet)

    ifg = tx_clk.get_min_ifg()
    for i,packet in enumerate(error_packets):
      # First valid frame (allowing time to process previous two valid frames)
      packets.append(MiiPacket(rand,
          dst_mac_addr=dut_mac_address,
          create_data_args=['step', (i%10, choose_small_frame_size(rand))],
          inter_frame_gap=3*packet_processing_time(tx_phy, 46, mac)
        ))

      # Take a copy to ensure that the original is not modified
      packet_copy = copy.deepcopy(packet)

      # Error frame after minimum IFG
      packet_copy.set_ifg(ifg)
      packets.append(packet_copy)

      # Second valid frame with minimum IFG
      packets.append(MiiPacket(rand,
          dst_mac_addr=dut_mac_address,
          create_data_args=['step', (2 * ((i+1)%10), choose_small_frame_size(rand))],
          inter_frame_gap=ifg
        ))

    do_rx_test(mac, arch, rx_clk, rx_phy, tx_clk, tx_phy, packets, __file__, seed)
Ejemplo n.º 35
0
def do_test(mac, arch, rx_clk, rx_phy, tx_clk, tx_phy, seed):
    rand = random.Random()
    rand.seed(seed)

    dut_mac_address = get_dut_mac_address()

    error_packets = []

    # Part A - Invalid preamble nibbles, but the frame should still be received
    preamble_nibbles = [0x5, 0x5, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x5]
    if tx_clk.get_rate() == Clock.CLK_125MHz:
        preamble_nibbles = [0x5, 0x5, 0x5, 0x5, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x5]

    error_packets.append(MiiPacket(rand,
        dst_mac_addr=dut_mac_address,
        preamble_nibbles=preamble_nibbles,
        create_data_args=['step', (rand.randint(1, 254), choose_small_frame_size(rand))]
      ))

    # Part B - Invalid preamble nibbles, but the packet should still be received
    preamble_nibbles = [0x5, 0x5, 0xf, 0xf, 0xf, 0xf, 0xf, 0xf, 0xf, 0xf, 0xf, 0xf, 0xf, 0xf, 0x5]
    if tx_clk.get_rate() == Clock.CLK_125MHz:
        preamble_nibbles = [0x5, 0x5, 0x5, 0x5, 0xf, 0xf, 0xf, 0xf, 0xf, 0xf, 0xf, 0xf, 0xf, 0xf, 0x5]

    error_packets.append(MiiPacket(rand,
        dst_mac_addr=dut_mac_address,
        preamble_nibbles=preamble_nibbles,
        create_data_args=['step', (rand.randint(1, 254), choose_small_frame_size(rand))],
        inter_frame_gap=packet_processing_time(tx_phy, 46, mac)
      ))

    # Part C - Invalid preamble nibbles, but the packet should still be received
    preamble_nibbles = [0x5, 0x5, 0x5, 0x5, 0x5, 0x5, 0x5, 0x5, 0x5, 0x5, 0x5, 0x8, 0x5, 0xf, 0x5]

    error_packets.append(MiiPacket(rand,
        dst_mac_addr=dut_mac_address,
        preamble_nibbles=preamble_nibbles,
        create_data_args=['step', (rand.randint(1, 254), choose_small_frame_size(rand))],
        inter_frame_gap=packet_processing_time(tx_phy, 46, mac)
      ))

    # Part D - Parts A, B and C with valid frames before/after the errror frame
    packets = []
    for packet in error_packets:
        packets.append(packet)

    ifg = tx_clk.get_min_ifg()
    for i,packet in enumerate(error_packets):
      # First valid frame (allowing time to process previous two valid frames)
      packets.append(MiiPacket(rand,
          dst_mac_addr=dut_mac_address,
          create_data_args=['step', (i%10, choose_small_frame_size(rand))],
          inter_frame_gap=3*packet_processing_time(tx_phy, 46, mac)
        ))

      # Take a copy to ensure that the original is not modified
      packet_copy = copy.deepcopy(packet)

      # Error frame after minimum IFG
      packet_copy.set_ifg(ifg)
      packets.append(packet_copy)

      # Second valid frame with minimum IFG
      packets.append(MiiPacket(rand,
          dst_mac_addr=dut_mac_address,
          create_data_args=['step', (2 * ((i+1)%10), choose_small_frame_size(rand))],
          inter_frame_gap=ifg
        ))

    do_rx_test(mac, arch, rx_clk, rx_phy, tx_clk, tx_phy, packets, __file__, seed)
Ejemplo n.º 36
0
def do_test(mac, arch, rx_clk, rx_phy, tx_clk, tx_phy, seed):
    rand = random.Random()
    rand.seed(seed)

    dut_mac_address = get_dut_mac_address()

    packets = []
    error_packets = []

    # Part A - untagged frame

    # Valid maximum size untagged frame (1500 data + 18 header & CRC bytes)
    packets.append(
        MiiPacket(rand,
                  dst_mac_addr=dut_mac_address,
                  create_data_args=['step', (1, 1500)]))

    # Oversized untagged frame - one byte too big for the 1522 bytes allowed per frame
    packet = MiiPacket(rand,
                       dst_mac_addr=dut_mac_address,
                       create_data_args=['step', (2, 1505)],
                       inter_frame_gap=packet_processing_time(
                           tx_phy, 1500, mac),
                       dropped=True)
    packets.append(packet)
    error_packets.append(packet)

    # Oversized untagged frame - too big for the 1522 bytes allowed per frame
    packet = MiiPacket(rand,
                       dst_mac_addr=dut_mac_address,
                       create_data_args=['step', (3, 1600)],
                       inter_frame_gap=packet_processing_time(
                           tx_phy, 1500, mac),
                       dropped=True)
    packets.append(packet)
    error_packets.append(packet)

    # Part B - VLAN/Prio tagged frame
    vlan_prio_tag = [0x81, 0x00, 0x00, 0x00]

    # Valid maximum size tagged frame (1500 data + 22 header & CRC bytes)
    packets.append(
        MiiPacket(rand,
                  dst_mac_addr=dut_mac_address,
                  vlan_prio_tag=vlan_prio_tag,
                  create_data_args=['step', (10, 1500)]))

    # Oversized tagged frame - just one byte too big
    packet = MiiPacket(rand,
                       dst_mac_addr=dut_mac_address,
                       vlan_prio_tag=vlan_prio_tag,
                       create_data_args=['step', (11, 1501)],
                       inter_frame_gap=packet_processing_time(
                           tx_phy, 1500, mac),
                       dropped=True)
    packets.append(packet)
    error_packets.append(packet)

    # Oversized tagged frame
    packet = MiiPacket(rand,
                       dst_mac_addr=dut_mac_address,
                       vlan_prio_tag=vlan_prio_tag,
                       create_data_args=['step', (12, 1549)],
                       inter_frame_gap=packet_processing_time(
                           tx_phy, 1500, mac),
                       dropped=True)
    packets.append(packet)
    error_packets.append(packet)

    # Part C
    # TODO - oversized envelope frame

    # Part D
    # Don't support flow control - so don't run

    # Part E
    # Parts A - C with valid frames before/after the errror frame
    ifg = tx_clk.get_min_ifg()
    for i, packet in enumerate(error_packets):
        # First valid frame (allowing time to process previous two valid frames)
        packets.append(
            MiiPacket(rand,
                      dst_mac_addr=dut_mac_address,
                      create_data_args=[
                          'step', (i % 10, choose_small_frame_size(rand))
                      ],
                      inter_frame_gap=2 *
                      packet_processing_time(tx_phy, 46, mac)))

        # Take a copy to ensure that the original is not modified
        packet_copy = copy.deepcopy(packet)

        # Error frame after minimum IFG
        packet_copy.set_ifg(ifg)
        packets.append(packet_copy)

        # Second valid frame with minimum IFG
        packets.append(
            MiiPacket(rand,
                      dst_mac_addr=dut_mac_address,
                      create_data_args=[
                          'step',
                          (2 * ((i + 1) % 10), choose_small_frame_size(rand))
                      ],
                      inter_frame_gap=ifg))

    do_rx_test(mac, arch, rx_clk, rx_phy, tx_clk, tx_phy, packets, __file__,
               seed)
Ejemplo n.º 37
0
def do_test(mac, arch, rx_clk, rx_phy, tx_clk, tx_phy, seed):
    rand = random.Random()
    rand.seed(seed)

    dut_mac_address = get_dut_mac_address()

    packets = []
    error_packets = []

    # Part A - untagged frame

    # Valid maximum size untagged frame (1500 data + 18 header & CRC bytes)
    packets.append(MiiPacket(rand,
        dst_mac_addr=dut_mac_address, create_data_args=['step', (1, 1500)]
      ))

    # Oversized untagged frame - one byte too big for the 1522 bytes allowed per frame
    packet = MiiPacket(rand,
        dst_mac_addr=dut_mac_address, create_data_args=['step', (2, 1505)],
        inter_frame_gap=packet_processing_time(tx_phy, 1500, mac),
        dropped=True
      )
    packets.append(packet)
    error_packets.append(packet)

    # Oversized untagged frame - too big for the 1522 bytes allowed per frame
    packet = MiiPacket(rand,
        dst_mac_addr=dut_mac_address, create_data_args=['step', (3, 1600)],
        inter_frame_gap=packet_processing_time(tx_phy, 1500, mac),
        dropped=True
      )
    packets.append(packet)
    error_packets.append(packet)

    # Part B - VLAN/Prio tagged frame
    vlan_prio_tag = [0x81, 0x00, 0x00, 0x00]

    # Valid maximum size tagged frame (1500 data + 22 header & CRC bytes)
    packets.append(MiiPacket(rand,
        dst_mac_addr=dut_mac_address, vlan_prio_tag=vlan_prio_tag,
        create_data_args=['step', (10, 1500)]
      ))

    # Oversized tagged frame - just one byte too big
    packet = MiiPacket(rand,
        dst_mac_addr=dut_mac_address, vlan_prio_tag=vlan_prio_tag,
        create_data_args=['step', (11, 1501)],
        inter_frame_gap=packet_processing_time(tx_phy, 1500, mac),
        dropped=True
      )
    packets.append(packet)
    error_packets.append(packet)

    # Oversized tagged frame
    packet = MiiPacket(rand,
        dst_mac_addr=dut_mac_address, vlan_prio_tag=vlan_prio_tag,
        create_data_args=['step', (12, 1549)],
        inter_frame_gap=packet_processing_time(tx_phy, 1500, mac),
        dropped=True
      )
    packets.append(packet)
    error_packets.append(packet)

    # Part C
    # TODO - oversized envelope frame

    # Part D
    # Don't support flow control - so don't run

    # Part E
    # Parts A - C with valid frames before/after the errror frame
    ifg = tx_clk.get_min_ifg()
    for i,packet in enumerate(error_packets):
      # First valid frame (allowing time to process previous two valid frames)
      packets.append(MiiPacket(rand,
          dst_mac_addr=dut_mac_address,
          create_data_args=['step', (i%10, choose_small_frame_size(rand))],
          inter_frame_gap=2*packet_processing_time(tx_phy, 46, mac)
        ))

      # Take a copy to ensure that the original is not modified
      packet_copy = copy.deepcopy(packet)

      # Error frame after minimum IFG
      packet_copy.set_ifg(ifg)
      packets.append(packet_copy)

      # Second valid frame with minimum IFG
      packets.append(MiiPacket(rand,
          dst_mac_addr=dut_mac_address,
          create_data_args=['step', (2 * ((i+1)%10), choose_small_frame_size(rand))],
          inter_frame_gap=ifg
        ))

    do_rx_test(mac, arch, rx_clk, rx_phy, tx_clk, tx_phy, packets, __file__, seed)
Ejemplo n.º 38
0
def do_test(arch, tx_clk, tx_phy, seed):
    rand = random.Random()
    rand.seed(seed)

    dev_address = get_dut_address()
    ep = 1

    # The inter-frame gap is to give the DUT time to print its output
    packets = []

    dataval = 0;

    # Reserved PID
    packets.append(TokenPacket( 
        inter_pkt_gap=2000, 
        pid=0x0,
        address=dev_address, 
        endpoint=ep))
    
    # Valid IN but not for us..
    packets.append(TokenPacket( 
        inter_pkt_gap=200, 
        pid=0x69,
        address=dev_address, 
        endpoint=ep,
        valid=False))

  # Valid OUT but not for us..
    packets.append(TokenPacket( 
        inter_pkt_gap=200, 
        pid=0xe1,
        address=dev_address, 
        endpoint=ep,
        valid=False))

    AppendOutToken(packets, ep)
    packets.append(TxDataPacket(rand, data_start_val=dataval, length=10, pid=0x3)) #DATA0
    packets.append(RxHandshakePacket())

    # Valid SETUP but not for us..
    packets.append(TokenPacket( 
        inter_pkt_gap=200, 
        pid=0x2d,
        address=dev_address, 
        endpoint=ep,
        valid=False))



    # Note, quite big gap to allow checking.
    
    dataval += 10
    AppendOutToken(packets, ep, inter_pkt_gap=6000)
    packets.append(TxDataPacket(rand, data_start_val=dataval, length=11, pid=0xb)) #DATA1
    packets.append(RxHandshakePacket())

    # Valid PING but not for us..
    packets.append(TokenPacket( 
        inter_pkt_gap=200, 
        pid=0xb4,
        address=dev_address, 
        endpoint=ep,
        valid=False))



    dataval += 11
    AppendOutToken(packets, ep, inter_pkt_gap=6000)
    packets.append(TxDataPacket(rand, data_start_val=dataval, length=12, pid=0x3)) #DATA0
    packets.append(RxHandshakePacket())

    dataval += 12
    AppendOutToken(packets, ep, inter_pkt_gap=6000)
    packets.append(TxDataPacket(rand, data_start_val=dataval, length=13, pid=0xb)) #DATA1
    packets.append(RxHandshakePacket())

    dataval += 13
    AppendOutToken(packets, ep, inter_pkt_gap=6000)
    packets.append(TxDataPacket(rand, data_start_val=dataval, length=14, pid=0x3)) #DATA0
    packets.append(RxHandshakePacket())


    do_rx_test(arch, tx_clk, tx_phy, packets, __file__, seed,
               level='smoke', extra_tasks=[])
Ejemplo n.º 39
0
def do_test(mac, arch, rx_clk, rx_phy, tx_clk, tx_phy, seed):
    rand = random.Random()
    rand.seed(seed)

    dut_mac_address = get_dut_mac_address()

    error_packets = []

    # Part A - maximum jabber size packet
    # Use a valid ether type as the type/len field can't encode the length
    ether_type_ip = [0x08, 0x00]

    # Jabber lengths as defined for 10Mb/s & 100Mb/s
    jabber_length = 9367
    if tx_clk.get_rate() == Clock.CLK_125MHz:
        # Length for 1000Mb/s
        jabber_length = 18742

    error_packets.append(
        MiiPacket(rand,
                  dst_mac_addr=dut_mac_address,
                  ether_len_type=ether_type_ip,
                  num_preamble_nibbles=7,
                  create_data_args=['step', (17, jabber_length)],
                  dropped=True))

    # Part B - Part A with valid frames before/after the errror frame
    packets = []
    for packet in error_packets:
        packets.append(packet)

    ifg = tx_clk.get_min_ifg()
    for i, packet in enumerate(error_packets):
        # First valid frame (allowing time to process previous two valid frames)
        packets.append(
            MiiPacket(rand,
                      dst_mac_addr=dut_mac_address,
                      create_data_args=[
                          'step', (i % 10, choose_small_frame_size(rand))
                      ],
                      inter_frame_gap=2 *
                      packet_processing_time(tx_phy, 46, mac)))

        # Take a copy to ensure that the original is not modified
        packet_copy = copy.deepcopy(packet)

        # Error frame after minimum IFG
        packet_copy.set_ifg(ifg)
        packets.append(packet_copy)

        # Second valid frame with minimum IFG
        packets.append(
            MiiPacket(rand,
                      dst_mac_addr=dut_mac_address,
                      create_data_args=[
                          'step',
                          (2 * ((i + 1) % 10), choose_small_frame_size(rand))
                      ],
                      inter_frame_gap=ifg))

    do_rx_test(mac, arch, rx_clk, rx_phy, tx_clk, tx_phy, packets, __file__,
               seed)