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])
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)
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(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)
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(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(mac, tx_clk, tx_phy):
resources = xmostest.request_resource("xsim")
testname = 'test_etype_filter'
binary = '{test}/bin/{mac}_{phy}/{test}_{mac}_{phy}.xe'.format(
test=testname, mac=mac, phy=tx_phy.get_name())
print "Running {test}: {phy} phy at {clk}".format(test=testname,
phy=tx_phy.get_name(),
clk=tx_clk.get_name())
rand = random.Random()
dut_mac_address = get_dut_mac_address()
packets = [
MiiPacket(rand,
dst_mac_addr=dut_mac_address,
src_mac_addr=[0 for x in range(6)],
ether_len_type=[0x11, 0x11],
data_bytes=[1, 2, 3, 4] + [0 for x in range(50)]),
MiiPacket(rand,
dst_mac_addr=dut_mac_address,
src_mac_addr=[0 for x in range(6)],
ether_len_type=[0x22, 0x22],
data_bytes=[5, 6, 7, 8] + [0 for x in range(60)])
]
tx_phy.set_packets(packets)
tester = xmostest.ComparisonTester(open('test_etype_filter.expect'),
'lib_ethernet', 'basic_tests', testname,
{
'mac': mac,
'phy': tx_phy.get_name(),
'clk': tx_clk.get_name()
})
simargs = get_sim_args(testname, mac, tx_clk, tx_phy)
tester.set_min_testlevel('nightly')
xmostest.run_on_simulator(resources['xsim'],
binary,
simthreads=[tx_clk, tx_phy],
tester=tester,
simargs=simargs)
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(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 = []
# Send enough basic frames to ensure the buffers in the DUT have wrapped
for i in range(200):
packets.append(MiiPacket(rand,
dst_mac_addr=dut_mac_address,
create_data_args=['step', (i, i+36)],
))
do_rx_test(mac, arch, rx_clk, rx_phy, tx_clk, tx_phy, packets, __file__, seed,
level='nightly')
def fill_gap(self, rand, packets, gap_size, last_packet_end, ifg):
min_ifg = 96 * self.bit_time
if debug_fill:
print "fill_gap {}, {} / {} / {}".format(last_packet_end, ifg, gap_size, self.min_packet_time)
while gap_size > self.min_packet_time:
if (rand.randint(0, self.total_weight_tag) < self.weight_tagged):
tag = [0x81, 0x00, rand.randint(0,0xff), rand.randint(0, 0xff)]
else:
tag = None
mac_choice = rand.randint(0, self.total_weight_tc - 1)
if (mac_choice < self.weight_none):
dst_mac_addr = self.none_mac_address
elif (mac_choice < self.weight_none + self.weight_lp):
dst_mac_addr = self.lp_mac_address
else:
dst_mac_addr = self.other_mac_address
frame_size = choose_data_size(rand, self.data_len_min, self.data_len_max)
if (rand.randint(0,100) > 30):
burst_len = rand.randint(1,20)
else:
burst_len = 1
for j in range(burst_len):
# The seq_ids are effectively packet counts
if (gap_size < self.min_packet_time):
break
if dst_mac_addr == self.none_mac_address:
packet_type = self.TYPE_NONE
seq_id = 0
elif dst_mac_addr == self.lp_mac_address:
packet_type = self.TYPE_LP
seq_id = self.lp_seq_id
self.lp_seq_id += 1
self.lp_data_bytes += frame_size + 14
if tag:
self.lp_data_bytes += 4
else:
packet_type = self.TYPE_OTHER
seq_id = self.other_seq_id
self.other_seq_id += 1
self.other_data_bytes += frame_size + 14
if tag:
self.other_data_bytes += 4
packet = MiiPacket(rand,
dst_mac_addr=dst_mac_addr,
create_data_args=['same', (seq_id, frame_size)],
vlan_prio_tag=tag,
inter_frame_gap=ifg)
packet_time = packet.get_packet_time(self.bit_time)
if debug_fill:
print "FILLER {} -> {} ({})".format(last_packet_end, last_packet_end + packet_time, frame_size)
gap_size -= packet_time
last_packet_end += packet_time
if packet_type == self.TYPE_NONE:
# Simply skip this packet
ifg += packet_time
else:
packets.append(packet)
ifg = rand.randint(min_ifg, 2 * min_ifg)
if debug_fill:
print "filled {} {} {} {}".format(packet.inter_frame_gap, packet_time, gap_size, packet_type)
return (last_packet_end, ifg)
def run(self):
xsi = self.xsi
self.wait(lambda x: xsi.sample_port_pins(self._txen) == 0)
# Need a random number generator for the MiiPacket constructor but it shouldn't
# have any affect as only blank packets are being created
rand = random.Random()
packet_count = 0
last_frame_end_time = None
while True:
# Wait for TXEN to go high
if self._test_ctrl is None:
self.wait(lambda x: xsi.sample_port_pins(self._txen) == 1)
else:
self.wait(lambda x: xsi.sample_port_pins(self._txen) == 1 or \
xsi.sample_port_pins(self._test_ctrl) == 1)
if xsi.sample_port_pins(self._txen) == 0 and xsi.sample_port_pins(self._test_ctrl) == 1:
xsi.terminate()
# Start with a blank packet to ensure they are filled in by the receiver
packet = MiiPacket(rand, blank=True)
frame_start_time = self.xsi.get_time()
in_preamble = True
packet_rate = self._clock.get_rate()
if last_frame_end_time:
ifgap = frame_start_time - last_frame_end_time
packet.inter_frame_gap = ifgap
while True:
# Wait for a falling clock edge or enable low
self.wait(lambda x: self._clock.is_low() or \
xsi.sample_port_pins(self._txen) == 0)
if xsi.sample_port_pins(self._txen) == 0:
last_frame_end_time = self.xsi.get_time()
break
byte = xsi.sample_port_pins(self._txd)
if packet_rate == Clock.CLK_125MHz:
# The RGMII phy at 1Gb/s expects a different nibble on each clock edge
# and hence will get a byte per cycle
if in_preamble:
if byte == 0xd5:
packet.append_preamble_nibble(byte & 0xf)
packet.set_sfd_nibble(byte >> 4)
in_preamble = False
else:
packet.append_preamble_nibble(byte & 0xf)
packet.append_preamble_nibble(byte >> 4)
else:
packet.append_data_byte(byte)
else:
# The RGMII phy at 10/100Mb/s only gets one nibble of data per clock
nibble = byte & 0xf
if in_preamble:
if nibble == 0xd:
packet.set_sfd_nibble(nibble)
in_preamble = False
else:
packet.append_preamble_nibble(nibble)
else:
packet.append_data_nibble(nibble)
self.wait(lambda x: self._clock.is_high())
packet.complete()
if self._print_packets:
sys.stdout.write(packet.dump())
if self._packet_fn:
self._packet_fn(packet, self)
# Perform packet checks
packet.check(self._clock)
def do_test(mac, rx_clk, rx_phy, tx_clk, tx_phy, seed):
start_test(rx_phy)
rand = random.Random()
rand.seed(seed)
# Generate an include file to define the seed
with open(os.path.join("include", "seed.inc"), "w") as f:
f.write("#define SEED {}".format(seed))
resources = xmostest.request_resource("xsim")
testname = 'test_time_rx_tx'
level = 'nightly'
binary = '{test}/bin/{mac}_{phy}/{test}_{mac}_{phy}.xe'.format(
test=testname, mac=mac, phy=tx_phy.get_name())
if xmostest.testlevel_is_at_least(xmostest.get_testlevel(), level):
print "Running {test}: {phy} phy at {clk} (seed {seed})".format(
test=testname, phy=tx_phy.get_name(), clk=tx_clk.get_name(), seed=seed)
dut_mac_address = get_dut_mac_address()
ifg = tx_clk.get_min_ifg()
packets = []
done = False
num_data_bytes = 0
while not done:
do_small_packet = rand.randint(0, 100) > 30
if do_small_packet:
length = rand.randint(46, 100)
else:
length = rand.randint(46, 1500)
burst_len = 1
do_burst = rand.randint(0, 100) > 80
if do_burst:
burst_len = rand.randint(1, 16)
for i in range(burst_len):
packets.append(MiiPacket(rand,
dst_mac_addr=dut_mac_address, inter_frame_gap=ifg, num_data_bytes=length
))
# Add on the overhead of the packet header
num_data_bytes += length + 14
if len(packets) == num_test_packets:
done = True
break
tx_phy.set_packets(packets)
if xmostest.testlevel_is_at_least(xmostest.get_testlevel(), level):
print "Sending {n} packets with {b} bytes at the DUT".format(n=len(packets), b=num_data_bytes)
expect_folder = create_if_needed("expect")
expect_filename = '{folder}/{test}_{mac}.expect'.format(
folder=expect_folder, test=testname, mac=mac)
create_expect(packets, expect_filename)
tester = xmostest.ComparisonTester(open(expect_filename),
'lib_ethernet', 'basic_tests', testname,
{'mac':mac, 'phy':tx_phy.get_name(), 'clk':tx_clk.get_name()},
regexp=True)
tester.set_min_testlevel('nightly')
simargs = get_sim_args(testname, mac, tx_clk, tx_phy)
xmostest.run_on_simulator(resources['xsim'], binary,
simthreads=[rx_clk, rx_phy, tx_clk, tx_phy],
tester=tester,
simargs=simargs)
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)
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)
def fill_gap(self, rand, packets, gap_size, last_packet_end, ifg):
min_ifg = 96 * self.bit_time
if debug_fill:
print "fill_gap {}, {} / {} / {}".format(last_packet_end, ifg,
gap_size,
self.min_packet_time)
while gap_size > self.min_packet_time:
if (rand.randint(0, self.total_weight_tag) < self.weight_tagged):
tag = [
0x81, 0x00,
rand.randint(0, 0xff),
rand.randint(0, 0xff)
]
else:
tag = None
mac_choice = rand.randint(0, self.total_weight_tc - 1)
if (mac_choice < self.weight_none):
dst_mac_addr = self.none_mac_address
elif (mac_choice < self.weight_none + self.weight_lp):
dst_mac_addr = self.lp_mac_address
else:
dst_mac_addr = self.other_mac_address
frame_size = choose_data_size(rand, self.data_len_min,
self.data_len_max)
if (rand.randint(0, 100) > 30):
burst_len = rand.randint(1, 20)
else:
burst_len = 1
for j in range(burst_len):
# The seq_ids are effectively packet counts
if (gap_size < self.min_packet_time):
break
if dst_mac_addr == self.none_mac_address:
packet_type = self.TYPE_NONE
seq_id = 0
elif dst_mac_addr == self.lp_mac_address:
packet_type = self.TYPE_LP
seq_id = self.lp_seq_id
self.lp_seq_id += 1
self.lp_data_bytes += frame_size + 14
if tag:
self.lp_data_bytes += 4
else:
packet_type = self.TYPE_OTHER
seq_id = self.other_seq_id
self.other_seq_id += 1
self.other_data_bytes += frame_size + 14
if tag:
self.other_data_bytes += 4
packet = MiiPacket(
rand,
dst_mac_addr=dst_mac_addr,
create_data_args=['same', (seq_id, frame_size)],
vlan_prio_tag=tag,
inter_frame_gap=ifg)
packet_time = packet.get_packet_time(self.bit_time)
if debug_fill:
print "FILLER {} -> {} ({})".format(
last_packet_end, last_packet_end + packet_time,
frame_size)
gap_size -= packet_time
last_packet_end += packet_time
if packet_type == self.TYPE_NONE:
# Simply skip this packet
ifg += packet_time
else:
packets.append(packet)
ifg = rand.randint(min_ifg, 2 * min_ifg)
if debug_fill:
print "filled {} {} {} {}".format(packet.inter_frame_gap,
packet_time, gap_size,
packet_type)
return (last_packet_end, ifg)
def do_test(mac, tx_clk, tx_phy, seed,
num_windows=10, num_avb_streams=12, num_avb_data_bytes=400,
weight_none=50, weight_lp=50, weight_other=50,
data_len_min=46, data_len_max=500,
weight_tagged=50, weight_untagged=50):
rand = random.Random()
rand.seed(seed)
bit_time = tx_phy.get_clock().get_bit_time()
rxLpControl = RxLpControl('tile[0]:XS1_PORT_1D', bit_time, 0, True, rand.randint(0, sys.maxint))
resources = xmostest.request_resource("xsim")
testname = 'test_avb_traffic'
level = 'nightly'
binary = '{test}/bin/{mac}_{phy}/{test}_{mac}_{phy}.xe'.format(
test=testname, mac=mac, phy=tx_phy.get_name())
if xmostest.testlevel_is_at_least(xmostest.get_testlevel(), level):
print "Running {test}: {phy} phy at {clk} (seed {seed})".format(
test=testname, phy=tx_phy.get_name(), clk=tx_clk.get_name(), seed=seed)
stream_mac_addresses = {}
stream_seq_id = {}
stream_ids = [x for x in range(num_avb_streams)]
for i in stream_ids:
stream_mac_addresses[i] = [i, 1, 2, 3, 4, 5]
stream_seq_id[i] = 0
packets = []
filler = PacketFiller(weight_none, weight_lp, weight_other, weight_tagged, weight_untagged,
data_len_min, data_len_max, bit_time)
window_size = 125000
min_ifg = 96 * bit_time
last_packet_end = 0
ifg = 0
for window in range(num_windows):
# Randomly place the streams in the 125us window
packet_start_times = sorted([rand.randint(0, window_size) for x in range(num_avb_streams)])
if debug_fill:
print "Window {} - times {}".format(window, packet_start_times)
rand.shuffle(stream_ids)
for (i, stream) in enumerate(stream_ids):
packet_start_time = packet_start_times[i]
gap_size = packet_start_time - last_packet_end
(last_packet_end, ifg) = filler.fill_gap(rand, packets, gap_size, last_packet_end, ifg)
start_ifg = min_ifg
avb_packet= MiiPacket(rand,
dst_mac_addr=stream_mac_addresses[stream],
create_data_args=['same', (stream_seq_id[stream], num_avb_data_bytes)],
vlan_prio_tag=[0x81, 0x00, 0x00, 0x00],
inter_frame_gap=ifg)
stream_seq_id[stream] += 1
packets.append(avb_packet)
ifg = rand.randint(min_ifg, 2 * min_ifg)
packet_time = avb_packet.get_packet_time(bit_time)
if debug_fill:
print "PACKET {} -> {}".format(last_packet_end, last_packet_end + packet_time)
last_packet_end += packet_time
# Fill the window after the last packet
gap_size = window_size - last_packet_end
(last_packet_end, ifg) = filler.fill_gap(rand, packets, gap_size, last_packet_end, ifg)
# Compute where in the next window the last packet has finished
last_packet_end = last_packet_end - window_size
tx_phy.set_packets(packets)
if xmostest.testlevel_is_at_least(xmostest.get_testlevel(), level):
print "Running {w} windows of {s} AVB streams with {b} data bytes each".format(
w=num_windows, s=num_avb_streams, b=num_avb_data_bytes)
print "Sending {n} lp packets with {b} bytes hp data".format(
n=filler.lp_seq_id, b=filler.lp_data_bytes)
print "Sending {n} other packets with {b} bytes hp data".format(
n=filler.other_seq_id, b=filler.other_data_bytes)
expect_folder = create_if_needed("expect")
expect_filename = '{folder}/{test}_{mac}_{phy}.expect'.format(
folder=expect_folder, test=testname, mac=mac, phy=tx_phy.get_name())
create_expect(packets, expect_filename, num_windows, num_avb_streams, num_avb_data_bytes)
tester = xmostest.ComparisonTester(open(expect_filename),
'lib_ethernet', 'basic_tests', testname,
{'mac':mac, 'phy':tx_phy.get_name(), 'clk':tx_clk.get_name(),
'n_stream':num_avb_streams, 'b_p_stream':num_avb_data_bytes,
'len_min':data_len_min, 'len_max':data_len_max,
'w_none':weight_none, 'w_lp':weight_lp, 'w_other':weight_other,
'n_windows':num_windows},
regexp=True)
tester.set_min_testlevel(level)
simargs = get_sim_args(testname, mac, tx_clk, tx_phy)
xmostest.run_on_simulator(resources['xsim'], binary,
simthreads=[tx_clk, tx_phy, rxLpControl],
tester=tester,
simargs=simargs)
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)
def run(self):
xsi = self.xsi
self.wait(lambda x: xsi.sample_port_pins(self._txen) == 0)
# Need a random number generator for the MiiPacket constructor but it shouldn't
# have any affect as only blank packets are being created
rand = random.Random()
packet_count = 0
last_frame_end_time = None
while True:
# Wait for TXEN to go high
if self._test_ctrl is None:
self.wait(lambda x: xsi.sample_port_pins(self._txen) == 1)
else:
self.wait(lambda x: xsi.sample_port_pins(self._txen) == 1 or \
xsi.sample_port_pins(self._test_ctrl) == 1)
if xsi.sample_port_pins(
self._txen) == 0 and xsi.sample_port_pins(
self._test_ctrl) == 1:
xsi.terminate()
# Start with a blank packet to ensure they are filled in by the receiver
packet = MiiPacket(rand, blank=True)
frame_start_time = self.xsi.get_time()
in_preamble = True
packet_rate = self._clock.get_rate()
if last_frame_end_time:
ifgap = frame_start_time - last_frame_end_time
packet.inter_frame_gap = ifgap
while True:
# Wait for a falling clock edge or enable low
self.wait(lambda x: self._clock.is_low() or \
xsi.sample_port_pins(self._txen) == 0)
if xsi.sample_port_pins(self._txen) == 0:
last_frame_end_time = self.xsi.get_time()
break
byte = xsi.sample_port_pins(self._txd)
if packet_rate == Clock.CLK_125MHz:
# The RGMII phy at 1Gb/s expects a different nibble on each clock edge
# and hence will get a byte per cycle
if in_preamble:
if byte == 0xd5:
packet.append_preamble_nibble(byte & 0xf)
packet.set_sfd_nibble(byte >> 4)
in_preamble = False
else:
packet.append_preamble_nibble(byte & 0xf)
packet.append_preamble_nibble(byte >> 4)
else:
packet.append_data_byte(byte)
else:
# The RGMII phy at 10/100Mb/s only gets one nibble of data per clock
nibble = byte & 0xf
if in_preamble:
if nibble == 0xd:
packet.set_sfd_nibble(nibble)
in_preamble = False
else:
packet.append_preamble_nibble(nibble)
else:
packet.append_data_nibble(nibble)
self.wait(lambda x: self._clock.is_high())
packet.complete()
if self._print_packets:
sys.stdout.write(packet.dump())
if self._packet_fn:
self._packet_fn(packet, self)
# Perform packet checks
packet.check(self._clock)
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)
def do_test(mac,
tx_clk,
tx_phy,
seed,
num_packets=200,
weight_hp=50,
weight_lp=50,
weight_other=50,
data_len_min=46,
data_len_max=500,
weight_tagged=50,
weight_untagged=50,
max_hp_mbps=1000):
rand = random.Random()
rand.seed(seed)
bit_time = tx_phy.get_clock().get_bit_time()
rxLpControl = RxLpControl('tile[0]:XS1_PORT_1D', bit_time, 0, True,
rand.randint(0, sys.maxint))
resources = xmostest.request_resource("xsim")
testname = 'test_rx_queues'
level = 'nightly'
binary = '{test}/bin/{mac}_{phy}/{test}_{mac}_{phy}.xe'.format(
test=testname, mac=mac, phy=tx_phy.get_name())
if xmostest.testlevel_is_at_least(xmostest.get_testlevel(), level):
print "Running {test}: {phy} phy at {clk} (seed {seed})".format(
test=testname,
phy=tx_phy.get_name(),
clk=tx_clk.get_name(),
seed=seed)
hp_mac_address = [0, 1, 2, 3, 4, 5]
hp_seq_id = 0
hp_data_bytes = 0
lp_mac_address = [1, 2, 3, 4, 5, 6]
lp_seq_id = 0
lp_data_bytes = 0
other_mac_address = [2, 3, 4, 5, 6, 7]
other_seq_id = 0
other_data_bytes = 0
packets = []
done = False
limiter = DataLimiter(max_hp_mbps, bit_time)
total_weight_tag = weight_tagged + weight_untagged
total_weight_tc = weight_hp + weight_lp + weight_other
while not done:
if (rand.randint(0, total_weight_tag) < weight_tagged):
tag = [0x81, 0x00, rand.randint(0, 0xff), rand.randint(0, 0xff)]
else:
tag = None
mac_choice = rand.randint(0, total_weight_tc - 1)
if (mac_choice < weight_lp):
dst_mac_addr = lp_mac_address
elif (mac_choice < weight_hp + weight_lp):
dst_mac_addr = hp_mac_address
else:
dst_mac_addr = other_mac_address
frame_size = choose_data_size(rand, data_len_min, data_len_max)
if (rand.randint(0, 100) > 30):
burst_len = rand.randint(1, 20)
else:
burst_len = 1
for j in range(burst_len):
# The seq_ids are effectively packet counts
if (hp_seq_id + lp_seq_id + other_seq_id) == num_packets:
done = True
break
if dst_mac_addr == lp_mac_address:
packet_type = DataLimiter.LP_PACKET
seq_id = lp_seq_id
lp_seq_id += 1
lp_data_bytes += frame_size + 14
if tag:
lp_data_bytes += 4
elif dst_mac_addr == hp_mac_address:
packet_type = DataLimiter.HP_PACKET
seq_id = hp_seq_id
hp_seq_id += 1
hp_data_bytes += frame_size + 14
if tag:
hp_data_bytes += 4
else:
packet_type = DataLimiter.OTHER_PACKET
seq_id = other_seq_id
other_seq_id += 1
other_data_bytes += frame_size + 14
if tag:
other_data_bytes += 4
ifg = limiter.get_ifg(packet_type, frame_size, tag)
packets.append(
MiiPacket(rand,
dst_mac_addr=dst_mac_addr,
create_data_args=['same', (seq_id, frame_size)],
vlan_prio_tag=tag,
inter_frame_gap=ifg))
tx_phy.set_packets(packets)
if xmostest.testlevel_is_at_least(xmostest.get_testlevel(), level):
print "Sending {n} hp packets with {b} bytes data".format(
n=hp_seq_id, b=hp_data_bytes)
print "Sending {n} lp packets with {b} bytes hp data".format(
n=lp_seq_id, b=lp_data_bytes)
print "Sending {n} other packets with {b} bytes hp data".format(
n=other_seq_id, b=other_data_bytes)
expect_folder = create_if_needed("expect")
expect_filename = '{folder}/{test}_{mac}_{phy}.expect'.format(
folder=expect_folder, test=testname, mac=mac, phy=tx_phy.get_name())
create_expect(packets, expect_filename, hp_mac_address, lp_mac_address)
tester = xmostest.ComparisonTester(open(expect_filename),
'lib_ethernet',
'basic_tests',
testname, {
'mac': mac,
'phy': tx_phy.get_name(),
'clk': tx_clk.get_name(),
'max_hp_mbps': max_hp_mbps,
'len_min': data_len_min,
'len_max': data_len_max,
'w_hp': weight_hp,
'w_lp': weight_lp,
'w_other': weight_other,
'n_packets': num_packets
},
regexp=True)
tester.set_min_testlevel(level)
simargs = get_sim_args(testname, mac, tx_clk, tx_phy)
xmostest.run_on_simulator(resources['xsim'],
binary,
simthreads=[tx_clk, tx_phy, rxLpControl],
tester=tester,
simargs=simargs)
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(mac,
tx_clk,
tx_phy,
seed,
num_windows=10,
num_avb_streams=12,
num_avb_data_bytes=400,
weight_none=50,
weight_lp=50,
weight_other=50,
data_len_min=46,
data_len_max=500,
weight_tagged=50,
weight_untagged=50):
rand = random.Random()
rand.seed(seed)
bit_time = tx_phy.get_clock().get_bit_time()
rxLpControl = RxLpControl('tile[0]:XS1_PORT_1D', bit_time, 0, True,
rand.randint(0, sys.maxint))
resources = xmostest.request_resource("xsim")
testname = 'test_avb_traffic'
level = 'nightly'
binary = '{test}/bin/{mac}_{phy}/{test}_{mac}_{phy}.xe'.format(
test=testname, mac=mac, phy=tx_phy.get_name())
if xmostest.testlevel_is_at_least(xmostest.get_testlevel(), level):
print "Running {test}: {phy} phy at {clk} (seed {seed})".format(
test=testname,
phy=tx_phy.get_name(),
clk=tx_clk.get_name(),
seed=seed)
stream_mac_addresses = {}
stream_seq_id = {}
stream_ids = [x for x in range(num_avb_streams)]
for i in stream_ids:
stream_mac_addresses[i] = [i, 1, 2, 3, 4, 5]
stream_seq_id[i] = 0
packets = []
filler = PacketFiller(weight_none, weight_lp, weight_other, weight_tagged,
weight_untagged, data_len_min, data_len_max,
bit_time)
window_size = 125000
min_ifg = 96 * bit_time
last_packet_end = 0
ifg = 0
for window in range(num_windows):
# Randomly place the streams in the 125us window
packet_start_times = sorted(
[rand.randint(0, window_size) for x in range(num_avb_streams)])
if debug_fill:
print "Window {} - times {}".format(window, packet_start_times)
rand.shuffle(stream_ids)
for (i, stream) in enumerate(stream_ids):
packet_start_time = packet_start_times[i]
gap_size = packet_start_time - last_packet_end
(last_packet_end, ifg) = filler.fill_gap(rand, packets, gap_size,
last_packet_end, ifg)
start_ifg = min_ifg
avb_packet = MiiPacket(rand,
dst_mac_addr=stream_mac_addresses[stream],
create_data_args=[
'same',
(stream_seq_id[stream],
num_avb_data_bytes)
],
vlan_prio_tag=[0x81, 0x00, 0x00, 0x00],
inter_frame_gap=ifg)
stream_seq_id[stream] += 1
packets.append(avb_packet)
ifg = rand.randint(min_ifg, 2 * min_ifg)
packet_time = avb_packet.get_packet_time(bit_time)
if debug_fill:
print "PACKET {} -> {}".format(last_packet_end,
last_packet_end + packet_time)
last_packet_end += packet_time
# Fill the window after the last packet
gap_size = window_size - last_packet_end
(last_packet_end, ifg) = filler.fill_gap(rand, packets, gap_size,
last_packet_end, ifg)
# Compute where in the next window the last packet has finished
last_packet_end = last_packet_end - window_size
tx_phy.set_packets(packets)
if xmostest.testlevel_is_at_least(xmostest.get_testlevel(), level):
print "Running {w} windows of {s} AVB streams with {b} data bytes each".format(
w=num_windows, s=num_avb_streams, b=num_avb_data_bytes)
print "Sending {n} lp packets with {b} bytes hp data".format(
n=filler.lp_seq_id, b=filler.lp_data_bytes)
print "Sending {n} other packets with {b} bytes hp data".format(
n=filler.other_seq_id, b=filler.other_data_bytes)
expect_folder = create_if_needed("expect")
expect_filename = '{folder}/{test}_{mac}_{phy}.expect'.format(
folder=expect_folder, test=testname, mac=mac, phy=tx_phy.get_name())
create_expect(packets, expect_filename, num_windows, num_avb_streams,
num_avb_data_bytes)
tester = xmostest.ComparisonTester(open(expect_filename),
'lib_ethernet',
'basic_tests',
testname, {
'mac': mac,
'phy': tx_phy.get_name(),
'clk': tx_clk.get_name(),
'n_stream': num_avb_streams,
'b_p_stream': num_avb_data_bytes,
'len_min': data_len_min,
'len_max': data_len_max,
'w_none': weight_none,
'w_lp': weight_lp,
'w_other': weight_other,
'n_windows': num_windows
},
regexp=True)
tester.set_min_testlevel(level)
simargs = get_sim_args(testname, mac, tx_clk, tx_phy)
xmostest.run_on_simulator(resources['xsim'],
binary,
simthreads=[tx_clk, tx_phy, rxLpControl],
tester=tester,
simargs=simargs)
