def testbed_config(conn_graph_facts, fanout_graph_facts, duthost):
ixia_fanout = get_peer_ixia_chassis(conn_data=conn_graph_facts,
dut_hostname=duthost.hostname)
pytest_require(ixia_fanout is not None,
skip_message="Cannot find the peer IXIA chassis")
ixia_fanout_id = list(fanout_graph_facts.keys()).index(ixia_fanout)
ixia_fanout_list = IxiaFanoutManager(fanout_graph_facts)
ixia_fanout_list.get_fanout_device_details(device_number=ixia_fanout_id)
ixia_ports = ixia_fanout_list.get_ports(peer_device=duthost.hostname)
pytest_require(len(ixia_ports) >= 2,
skip_message="The test requires at least two ports")
rx_id = 0
tx_id = 1
rx_port_location = get_tgen_location(ixia_ports[rx_id])
tx_port_location = get_tgen_location(ixia_ports[tx_id])
rx_port_speed = int(ixia_ports[rx_id]['speed'])
tx_port_speed = int(ixia_ports[tx_id]['speed'])
pytest_require(rx_port_speed == tx_port_speed,
skip_message="Two ports should have the same speed")
""" L1 configuration """
rx_port = Port(name='Rx Port', location=rx_port_location)
tx_port = Port(name='Tx Port', location=tx_port_location)
pfc = Ieee8021qbb(pfc_delay=1,
pfc_class_0=0,
pfc_class_1=1,
pfc_class_2=2,
pfc_class_3=3,
pfc_class_4=4,
pfc_class_5=5,
pfc_class_6=6,
pfc_class_7=7)
flow_ctl = FlowControl(choice=pfc)
auto_negotiation = AutoNegotiation(link_training=True, rs_fec=True)
l1_config = Layer1(name='L1 config',
speed='speed_%d_gbps' % (rx_port_speed / 1000),
auto_negotiate=False,
auto_negotiation=auto_negotiation,
flow_control=flow_ctl,
port_names=[tx_port.name, rx_port.name])
config = Config(ports=[tx_port, rx_port],
layer1=[l1_config],
options=Options(PortOptions(location_preemption=True)))
vlan_subnet = get_vlan_subnet(duthost)
pytest_assert(vlan_subnet is not None,
"Fail to get Vlan subnet information")
vlan_ip_addrs = get_addrs_in_subnet(vlan_subnet, 2)
gw_addr = vlan_subnet.split('/')[0]
prefix = vlan_subnet.split('/')[1]
tx_port_ip = vlan_ip_addrs[0]
rx_port_ip = vlan_ip_addrs[1]
tx_gateway_ip = gw_addr
rx_gateway_ip = gw_addr
""" L2/L3 configuration """
tx_ipv4 = Ipv4(name='Tx Ipv4',
address=Pattern(tx_port_ip),
prefix=Pattern(prefix),
gateway=Pattern(tx_gateway_ip),
ethernet=Ethernet(name='Tx Ethernet'))
config.devices.append(
Device(name='Tx Device',
device_count=1,
container_name=tx_port.name,
choice=tx_ipv4))
rx_ipv4 = Ipv4(name='Rx Ipv4',
address=Pattern(rx_port_ip),
prefix=Pattern(prefix),
gateway=Pattern(rx_gateway_ip),
ethernet=Ethernet(name='Rx Ethernet'))
config.devices.append(
Device(name='Rx Device',
device_count=1,
container_name=rx_port.name,
choice=rx_ipv4))
return config
def lossy_configs(testbed, conn_graph_facts, duthost, lossless_prio_dscp_map,
one_hundred_gbe, start_delay, serializer):
for config in one_hundred_gbe:
bg_dscp_list = [prio for prio in lossless_prio_dscp_map]
test_dscp_list = [x for x in range(64) if x not in bg_dscp_list]
vlan_subnet = get_vlan_subnet(duthost)
pytest_assert(vlan_subnet is not None,
"Fail to get Vlan subnet information")
vlan_ip_addrs = get_addrs_in_subnet(vlan_subnet, 2)
gw_addr = vlan_subnet.split('/')[0]
interface_ip_addr = vlan_ip_addrs[0]
tx_port_ip = vlan_ip_addrs[1]
rx_port_ip = vlan_ip_addrs[0]
tx_gateway_ip = gw_addr
rx_gateway_ip = gw_addr
test_flow_name = 'Test Data'
background_flow_name = 'Background Data'
test_line_rate = 50
background_line_rate = 50
pause_line_rate = 100
configure_pause_frame = 1
######################################################################
# Create TX stack configuration
######################################################################
tx_ipv4 = Ipv4(name='Tx Ipv4',
address=Pattern(tx_port_ip),
prefix=Pattern('24'),
gateway=Pattern(tx_gateway_ip))
tx_ethernet = Ethernet(name='Tx Ethernet', ipv4=tx_ipv4)
tx_device = Device(name='Tx Device',
devices_per_port=1,
ethernets=[tx_ethernet])
tx_device_group = DeviceGroup(name='Tx Device Group',
port_names=['Tx'],
devices=[tx_device])
config.device_groups.append(tx_device_group)
######################################################################
# Create RX stack configuration
######################################################################
rx_ipv4 = Ipv4(name='Rx Ipv4',
address=Pattern(rx_port_ip),
prefix=Pattern('24'),
gateway=Pattern(rx_gateway_ip))
rx_ethernet = Ethernet(name='Rx Ethernet', ipv4=rx_ipv4)
rx_device = Device(name='Rx Device',
devices_per_port=1,
ethernets=[rx_ethernet])
rx_device_group = DeviceGroup(name='Rx Device Group',
port_names=['Rx'],
devices=[rx_device])
config.device_groups.append(rx_device_group)
######################################################################
# Traffic configuration Test data
######################################################################
data_endpoint = DeviceEndpoint(tx_device_names=[tx_device.name],
rx_device_names=[rx_device.name],
packet_encap='ipv4',
src_dst_mesh='',
route_host_mesh='',
bi_directional=False,
allow_self_destined=False)
test_dscp = Priority(Dscp(phb=FieldPattern(choice=test_dscp_list)))
test_flow = Flow(name=test_flow_name,
endpoint=Endpoint(data_endpoint),
packet=[
Header(choice=EthernetHeader()),
Header(choice=Ipv4Header(priority=test_dscp))
],
size=Size(1024),
rate=Rate('line', test_line_rate),
duration=Duration(
Fixed(packets=0,
delay=start_delay,
delay_unit='nanoseconds')))
config.flows.append(test_flow)
#######################################################################
# Traffic configuration Background data
#######################################################################
background_dscp = Priority(Dscp(phb=FieldPattern(choice=bg_dscp_list)))
background_flow = Flow(
name=background_flow_name,
endpoint=Endpoint(data_endpoint),
packet=[
Header(choice=EthernetHeader()),
Header(choice=Ipv4Header(priority=background_dscp))
],
size=Size(1024),
rate=Rate('line', background_line_rate),
duration=Duration(
Fixed(packets=0, delay=start_delay, delay_unit='nanoseconds')))
config.flows.append(background_flow)
#######################################################################
# Traffic configuration Pause
#######################################################################
if (configure_pause_frame):
pause_endpoint = PortEndpoint(tx_port_name='Rx',
rx_port_names=['Rx'])
pause = Header(
PfcPause(
dst=FieldPattern(choice='01:80:C2:00:00:01'),
src=FieldPattern(choice='00:00:fa:ce:fa:ce'),
class_enable_vector=FieldPattern(choice='E7'),
pause_class_0=FieldPattern(choice='ffff'),
pause_class_1=FieldPattern(choice='ffff'),
pause_class_2=FieldPattern(choice='ffff'),
pause_class_3=FieldPattern(choice='0'),
pause_class_4=FieldPattern(choice='0'),
pause_class_5=FieldPattern(choice='ffff'),
pause_class_6=FieldPattern(choice='ffff'),
pause_class_7=FieldPattern(choice='ffff'),
))
pause_flow = Flow(name='Pause Storm',
endpoint=Endpoint(pause_endpoint),
packet=[pause],
size=Size(64),
rate=Rate('line', value=pause_line_rate),
duration=Duration(
Fixed(packets=0,
delay=0,
delay_unit='nanoseconds')))
config.flows.append(pause_flow)
return one_hundred_gbe
def ixia_testbed(conn_graph_facts, fanout_graph_facts, duthosts,
rand_one_dut_hostname):
"""
L2/L3 Tgen API config for the T0 testbed
Args:
conn_graph_facts (pytest fixture)
fanout_graph_facts (pytest fixture)
duthosts (pytest fixture): list of DUTs
rand_one_dut_hostname (pytest fixture): DUT hostname
Returns:
L2/L3 config for the T0 testbed
"""
duthost = duthosts[rand_one_dut_hostname]
ixia_fanout = get_peer_ixia_chassis(conn_data=conn_graph_facts,
dut_hostname=duthost.hostname)
if ixia_fanout is None:
return None
ixia_fanout_id = list(fanout_graph_facts.keys()).index(ixia_fanout)
ixia_fanout_list = IxiaFanoutManager(fanout_graph_facts)
ixia_fanout_list.get_fanout_device_details(device_number=ixia_fanout_id)
ixia_ports = ixia_fanout_list.get_ports(peer_device=duthost.hostname)
ports = list()
port_names = list()
port_speed = None
""" L1 config """
for i in range(len(ixia_ports)):
port = Port(name='Port {}'.format(i),
location=get_tgen_location(ixia_ports[i]))
ports.append(port)
port_names.append(port.name)
if port_speed is None:
port_speed = int(ixia_ports[i]['speed'])
elif port_speed != int(ixia_ports[i]['speed']):
""" All the ports should have the same bandwidth """
return None
pfc = Ieee8021qbb(pfc_delay=0,
pfc_class_0=0,
pfc_class_1=1,
pfc_class_2=2,
pfc_class_3=3,
pfc_class_4=4,
pfc_class_5=5,
pfc_class_6=6,
pfc_class_7=7)
flow_ctl = FlowControl(choice=pfc)
auto_negotiation = AutoNegotiation(link_training=True, rs_fec=True)
l1_config = Layer1(name='L1 config',
speed='speed_%d_gbps' % int(port_speed / 1000),
auto_negotiate=False,
auto_negotiation=auto_negotiation,
ieee_media_defaults=False,
flow_control=flow_ctl,
port_names=port_names)
config = Config(ports=ports,
layer1=[l1_config],
options=Options(PortOptions(location_preemption=True)))
""" L2/L3 config """
vlan_subnet = get_vlan_subnet(duthost)
if vlan_subnet is None:
return None
vlan_ip_addrs = get_addrs_in_subnet(vlan_subnet, len(ixia_ports))
gw_addr = vlan_subnet.split('/')[0]
prefix = vlan_subnet.split('/')[1]
for i in range(len(ixia_ports)):
ip_stack = Ipv4(name='Ipv4 {}'.format(i),
address=Pattern(vlan_ip_addrs[i]),
prefix=Pattern(prefix),
gateway=Pattern(gw_addr),
ethernet=Ethernet(name='Ethernet {}'.format(i)))
device = Device(name='Device {}'.format(i),
device_count=1,
container_name=port_names[i],
choice=ip_stack)
config.devices.append(device)
return config
def base_configs(testbed, conn_graph_facts, duthost, lossless_prio_dscp_map,
one_hundred_gbe, start_delay, traffic_duration,
pause_line_rate, traffic_line_rate, pause_frame_type,
frame_size, serializer):
for config in one_hundred_gbe:
start_delay = start_delay * 1000000000.0
bg_dscp_list = [str(prio) for prio in lossless_prio_dscp_map]
test_dscp_list = [str(x) for x in range(64) if x not in bg_dscp_list]
tx = config.ports[0]
rx = config.ports[1]
vlan_subnet = get_vlan_subnet(duthost)
pytest_assert(vlan_subnet is not None,
"Fail to get Vlan subnet information")
vlan_ip_addrs = get_addrs_in_subnet(vlan_subnet, 2)
gw_addr = vlan_subnet.split('/')[0]
interface_ip_addr = vlan_ip_addrs[0]
tx_port_ip = vlan_ip_addrs[1]
rx_port_ip = vlan_ip_addrs[0]
tx_gateway_ip = gw_addr
rx_gateway_ip = gw_addr
test_flow_name = 'Test Data'
background_flow_name = 'Background Data'
test_line_rate = traffic_line_rate
background_line_rate = traffic_line_rate
pause_line_rate = pause_line_rate
pytest_assert(
test_line_rate + background_line_rate <= 100,
"test_line_rate + background_line_rate should be less than 100")
######################################################################
# Create TX stack configuration
######################################################################
tx_ipv4 = Ipv4(name='Tx Ipv4',
address=Pattern(tx_port_ip),
prefix=Pattern('24'),
gateway=Pattern(tx_gateway_ip),
ethernet=Ethernet(name='Tx Ethernet'))
tx.devices.append(
Device(name='Tx Device', device_count=1, choice=tx_ipv4))
######################################################################
# Create RX stack configuration
######################################################################
rx_ipv4 = Ipv4(name='Rx Ipv4',
address=Pattern(rx_port_ip),
prefix=Pattern('24'),
gateway=Pattern(rx_gateway_ip),
ethernet=Ethernet(name='Rx Ethernet'))
rx.devices.append(
Device(name='Rx Device', device_count=1, choice=rx_ipv4))
######################################################################
# Traffic configuration Test data
######################################################################
data_endpoint = DeviceTxRx(
tx_device_names=[tx.devices[0].name],
rx_device_names=[rx.devices[0].name],
)
test_dscp = Priority(Dscp(phb=FieldPattern(choice=test_dscp_list)))
test_flow = Flow(name=test_flow_name,
tx_rx=TxRx(data_endpoint),
packet=[
Header(choice=EthernetHeader()),
Header(choice=Ipv4Header(priority=test_dscp))
],
size=Size(frame_size),
rate=Rate('line', test_line_rate),
duration=Duration(
FixedSeconds(seconds=traffic_duration,
delay=start_delay,
delay_unit='nanoseconds')))
config.flows.append(test_flow)
#######################################################################
# Traffic configuration Background data
#######################################################################
background_dscp = Priority(Dscp(phb=FieldPattern(choice=bg_dscp_list)))
background_flow = Flow(
name=background_flow_name,
tx_rx=TxRx(data_endpoint),
packet=[
Header(choice=EthernetHeader()),
Header(choice=Ipv4Header(priority=background_dscp))
],
size=Size(frame_size),
rate=Rate('line', background_line_rate),
duration=Duration(
FixedSeconds(seconds=traffic_duration,
delay=start_delay,
delay_unit='nanoseconds')))
config.flows.append(background_flow)
#######################################################################
# Traffic configuration Pause
#######################################################################
pause_endpoint = PortTxRx(tx_port_name='Rx', rx_port_names=['Rx'])
if (pause_frame_type == 'priority'):
pause = Header(
PfcPause(
dst=FieldPattern(choice='01:80:C2:00:00:01'),
src=FieldPattern(choice='00:00:fa:ce:fa:ce'),
class_enable_vector=FieldPattern(choice='E7'),
pause_class_0=FieldPattern(choice='ffff'),
pause_class_1=FieldPattern(choice='ffff'),
pause_class_2=FieldPattern(choice='ffff'),
pause_class_3=FieldPattern(choice='0'),
pause_class_4=FieldPattern(choice='0'),
pause_class_5=FieldPattern(choice='ffff'),
pause_class_6=FieldPattern(choice='ffff'),
pause_class_7=FieldPattern(choice='ffff'),
))
pause_flow = Flow(name='Pause Storm',
tx_rx=TxRx(pause_endpoint),
packet=[pause],
size=Size(64),
rate=Rate('line', value=100),
duration=Duration(
FixedPackets(packets=0,
delay=0,
delay_unit='nanoseconds')))
elif (pause_frame_type == 'global'):
pause = Header(
EthernetPause(dst=FieldPattern(choice='01:80:C2:00:00:01'),
src=FieldPattern(choice='00:00:fa:ce:fa:ce')))
pause_flow = Flow(name='Pause Storm',
tx_rx=TxRx(pause_endpoint),
packet=[pause],
size=Size(64),
rate=Rate('line', value=pause_line_rate),
duration=Duration(
FixedPackets(packets=0,
delay=0,
delay_unit='nanoseconds')))
else:
pass
config.flows.append(pause_flow)
return one_hundred_gbe
def run_pfc_exp(session,
dut,
tx_port,
rx_port,
port_bw,
test_prio_list,
test_dscp_list,
bg_dscp_list,
exp_dur,
start_delay=START_DELAY,
test_traffic_pause_expected=True,
send_pause_frame=True):
"""
Run a PFC experiment.
1. IXIA sends test traffic and background traffic from tx_port.
2. IXIA sends PFC pause frames from rx_port to pause priorities.
3. Background traffic should not be interruped - all background traffic
will be received at the rx_port.
4. No test traffic will be received at the rx_port when pause priority
is equal to test traffic priority.
Note: PFC pause frames should always be dropped, regardless of their
pause priorities.
Args:
session (IxNetwork Session object): IxNetwork session.
dut (object): Ansible instance of SONiC device under test (DUT).
tx_port (object Ixia vport): IXIA port to transmit traffic.
rx_port (object Ixia vport): IXIA port to receive traffic.
port_bw (int): bandwidth (in Mbps) of tx_port and rx_port.
test_prio_list (list of integers): PFC priorities of test traffic and
PFC pause frames.
test_dscp_list (list of integers): DSCP values of test traffic.
bg_dscp_list (list of integers): DSCP values of background traffic.
exp_dur (integer): experiment duration in second.
start_delay (float): approximated initial delay to start the traffic.
test_traffic_pause_expected (bool): Do you expect test traffic to
be stopped? If yes, this should be true; false otherwise.
send_pause_frame (bool): True/False depending on whether you want to
send pause frame Rx port or not.
Returns:
This function returns nothing.
"""
# Disable DUT's PFC watchdog.
dut.shell('sudo pfcwd stop')
vlan_subnet = get_vlan_subnet(dut)
pytest_assert(vlan_subnet is not None,
"Fail to get Vlan subnet information")
gw_addr = vlan_subnet.split('/')[0]
# One for sender and the other one for receiver.
vlan_ip_addrs = get_addrs_in_subnet(vlan_subnet, 2)
topo_receiver = create_topology(session=session,
name="Receiver",
ports=list(rx_port),
ip_start=vlan_ip_addrs[0],
ip_incr_step='0.0.0.1',
gw_start=gw_addr,
gw_incr_step='0.0.0.0')
# Assumption: Line rate percentage of background data traffic
# is equal to Line rate percentage of test data traffic.
pytest_assert(2 * RATE_PERCENTAGE <= 100,
"Value of RATE_PERCENTAGE should not be more than 50!")
topo_sender = create_topology(session=session,
name="Sender",
ports=list(tx_port),
ip_start=vlan_ip_addrs[1],
ip_incr_step='0.0.0.1',
gw_start=gw_addr,
gw_incr_step='0.0.0.0')
start_protocols(session)
test_traffic = create_ipv4_traffic(session=session,
name='Test Data Traffic',
source=topo_sender,
destination=topo_receiver,
pkt_size=DATA_PKT_SIZE,
duration=exp_dur,
rate_percent=RATE_PERCENTAGE,
start_delay=start_delay,
dscp_list=test_dscp_list,
lossless_prio_list=test_prio_list)
bg_priority_list = [b for b in range(8) if b not in test_prio_list]
background_traffic = create_ipv4_traffic(
session=session,
name='Background Data Traffic',
source=topo_sender,
destination=topo_receiver,
pkt_size=DATA_PKT_SIZE,
duration=exp_dur,
rate_percent=RATE_PERCENTAGE,
start_delay=start_delay,
dscp_list=bg_dscp_list,
lossless_prio_list=bg_priority_list)
# Pause time duration (in second) for each PFC pause frame.
pause_dur_per_pkt = 65535 * 64 * 8.0 / (port_bw * 1000000)
# Do not specify duration here as we want it keep running.
if send_pause_frame:
pfc_traffic = create_pause_traffic(session=session,
name='PFC Pause Storm',
source=rx_port,
pkt_per_sec=1.1 / pause_dur_per_pkt,
start_delay=0,
global_pause=False,
pause_prio_list=test_prio_list)
start_traffic(session)
# Wait for test and background traffic to finish.
time.sleep(exp_dur + start_delay + 1)
# Capture traffic statistics.
flow_statistics = get_traffic_statistics(session)
logger.info(flow_statistics)
exp_tx_bytes = (exp_dur * port_bw * 1000000 *
(RATE_PERCENTAGE / 100.0)) / 8
for row_number, flow_stat in enumerate(flow_statistics.Rows):
tx_frames = int(flow_stat['Tx Frames'])
rx_frames = int(flow_stat['Rx Frames'])
rx_bytes = int(flow_stat['Rx Bytes'])
tolerance_ratio = rx_bytes / exp_tx_bytes
if 'Test' in flow_stat['Traffic Item']:
if test_traffic_pause_expected:
pytest_assert(tx_frames > 0 and rx_frames == 0,
"Test traffic should be fully paused")
else:
pytest_assert(tx_frames > 0 and tx_frames == rx_frames,
"Test traffic packets should not be dropped")
if ((tolerance_ratio < TOLERANCE_THRESHOLD)
or (tolerance_ratio > 1)):
logger.error("Expected Tx/Rx = %s actual Rx = %s" %
(exp_tx_bytes, rx_bytes))
logger.error("tolerance_ratio = %s" % (tolerance_ratio))
pytest_assert(
False,
"expected % of packets not received at the RX port")
elif 'PFC' in flow_stat['Traffic Item']:
pytest_assert(tx_frames > 0 and rx_frames == 0,
"PFC packets should be dropped")
else:
pytest_assert(tx_frames > 0 and tx_frames == rx_frames,
"Background traffic should not be impacted")
if ((tolerance_ratio < TOLERANCE_THRESHOLD)
or (tolerance_ratio > 1)):
logger.error("Expected Tx/Rx = %s actual Rx = %s" %
(exp_tx_bytes, rx_bytes))
logger.error("tolerance_ratio = %s" % (tolerance_ratio))
pytest_assert(
False, "expected % of packets not received at the RX port")
stop_traffic(session)
def _pfcwd_configs(prio):
"""
A fixture to create pfcwd configs on traffic generator using open traffic genertor model
:param prio: dscp priority 3 or 4
"""
vlan_subnet = get_vlan_subnet(duthost)
pytest_assert(vlan_subnet is not None,
"Fail to get Vlan subnet information")
vlan_ip_addrs = get_addrs_in_subnet(vlan_subnet, 3)
gw_addr = vlan_subnet.split('/')[0]
device1_ip = vlan_ip_addrs[0]
device2_ip = vlan_ip_addrs[1]
device3_ip = vlan_ip_addrs[2]
device1_gateway_ip = gw_addr
device2_gateway_ip = gw_addr
device3_gateway_ip = gw_addr
available_phy_port = ports_config.get_available_phy_ports()
pytest_assert(
len(available_phy_port) > 3,
"Number of physical ports must be at least 3")
ports_list = ports_config.create_ports_list(no_of_ports=3)
configs = []
for phy_ports in ports_list:
config = ports_config.create_config(phy_ports)
line_rate = traffic_line_rate
######################################################################
# Device Configuration
######################################################################
port1 = config.ports[0]
port2 = config.ports[1]
port3 = config.ports[2]
#Device 1 configuration
port1.devices = [
Device(name='Port 1',
device_count=1,
choice=Ipv4(name='Ipv4 1',
address=Pattern(device1_ip),
prefix=Pattern('24'),
gateway=Pattern(device1_gateway_ip),
ethernet=Ethernet(name='Ethernet 1')))
]
#Device 2 configuration
port2.devices = [
Device(name='Port 2',
device_count=1,
choice=Ipv4(name='Ipv4 2',
address=Pattern(device2_ip),
prefix=Pattern('24'),
gateway=Pattern(device2_gateway_ip),
ethernet=Ethernet(name='Ethernet 2')))
]
#Device 3 configuration
port3.devices = [
Device(name='Port 3',
device_count=1,
choice=Ipv4(name='Ipv4 3',
address=Pattern(device3_ip),
prefix=Pattern('24'),
gateway=Pattern(device3_gateway_ip),
ethernet=Ethernet(name='Ethernet 3')))
]
device1 = port1.devices[0]
device2 = port2.devices[0]
device3 = port3.devices[0]
######################################################################
# Traffic configuration Traffic 1->2
######################################################################
dscp_prio = Priority(Dscp(phb=FieldPattern(choice=[str(prio)])))
flow_1to2 = Flow(name="Traffic 1->2",
tx_rx=TxRx(
DeviceTxRx(tx_device_names=[device1.name],
rx_device_names=[device2.name])),
packet=[
Header(choice=EthernetHeader()),
Header(choice=Ipv4Header(priority=dscp_prio)),
],
size=Size(frame_size),
rate=Rate('line', line_rate),
duration=Duration(
Continuous(delay=start_delay,
delay_unit='nanoseconds')))
config.flows.append(flow_1to2)
######################################################################
# Traffic configuration Traffic 2->1
######################################################################
flow_2to1 = Flow(name="Traffic 2->1",
tx_rx=TxRx(
DeviceTxRx(tx_device_names=[device2.name],
rx_device_names=[device1.name])),
packet=[
Header(choice=EthernetHeader()),
Header(choice=Ipv4Header(priority=dscp_prio)),
],
size=Size(frame_size),
rate=Rate('line', line_rate),
duration=Duration(
Continuous(delay=start_delay,
delay_unit='nanoseconds')))
config.flows.append(flow_2to1)
######################################################################
# Traffic configuration Traffic 2->3
#######################################################################
flow_2to3 = Flow(name="Traffic 2->3",
tx_rx=TxRx(
DeviceTxRx(tx_device_names=[device2.name],
rx_device_names=[device3.name])),
packet=[
Header(choice=EthernetHeader()),
Header(choice=Ipv4Header(priority=dscp_prio)),
],
size=Size(frame_size),
rate=Rate('line', line_rate),
duration=Duration(
Continuous(delay=start_delay,
delay_unit='nanoseconds')))
config.flows.append(flow_2to3)
######################################################################
# Traffic configuration Traffic 3->2
#######################################################################
flow_3to2 = Flow(name="Traffic 3->2",
tx_rx=TxRx(
DeviceTxRx(tx_device_names=[device3.name],
rx_device_names=[device2.name])),
packet=[
Header(choice=EthernetHeader()),
Header(choice=Ipv4Header(priority=dscp_prio)),
],
size=Size(frame_size),
rate=Rate('line', line_rate),
duration=Duration(
Continuous(delay=start_delay,
delay_unit='nanoseconds')))
config.flows.append(flow_3to2)
#######################################################################
# Traffic configuration Pause
#######################################################################
if prio == 3:
pause = Header(
PfcPause(
dst=FieldPattern(choice='01:80:C2:00:00:01'),
src=FieldPattern(choice='00:00:fa:ce:fa:ce'),
class_enable_vector=FieldPattern(choice='8'),
pause_class_0=FieldPattern(choice='0'),
pause_class_1=FieldPattern(choice='0'),
pause_class_2=FieldPattern(choice='0'),
pause_class_3=FieldPattern(choice='ffff'),
pause_class_4=FieldPattern(choice='0'),
pause_class_5=FieldPattern(choice='0'),
pause_class_6=FieldPattern(choice='0'),
pause_class_7=FieldPattern(choice='0'),
))
elif prio == 4:
pause = Header(
PfcPause(
dst=FieldPattern(choice='01:80:C2:00:00:01'),
src=FieldPattern(choice='00:00:fa:ce:fa:ce'),
class_enable_vector=FieldPattern(choice='10'),
pause_class_0=FieldPattern(choice='0'),
pause_class_1=FieldPattern(choice='0'),
pause_class_2=FieldPattern(choice='0'),
pause_class_3=FieldPattern(choice='0'),
pause_class_4=FieldPattern(choice='ffff'),
pause_class_5=FieldPattern(choice='0'),
pause_class_6=FieldPattern(choice='0'),
pause_class_7=FieldPattern(choice='0'),
))
else:
pytest_assert(
False,
"This testcase supports only lossless priorities 3 & 4, need to enhance the script based on requirement"
)
pause_flow = Flow(name='Pause Storm',
tx_rx=TxRx(
PortTxRx(tx_port_name=port3.name,
rx_port_names=[port3.name])),
packet=[pause],
size=Size(64),
rate=Rate('line', value=pause_line_rate),
duration=Duration(
Continuous(delay=t_start_pause * (10**9),
delay_unit='nanoseconds')))
config.flows.append(pause_flow)
configs.append(config)
return configs
def _pfc_watch_dog_config(pi):
vlan_subnet = get_vlan_subnet(duthost)
pytest_assert(vlan_subnet is not None,
"Fail to get Vlan subnet information")
vlan_ip_addrs = get_addrs_in_subnet(vlan_subnet, 3)
gw_addr = vlan_subnet.split('/')[0]
interface_ip_addr = vlan_ip_addrs[0]
device1_ip = vlan_ip_addrs[0]
device2_ip = vlan_ip_addrs[1]
device3_ip = vlan_ip_addrs[2]
device1_gateway_ip = gw_addr
device2_gateway_ip = gw_addr
device3_gateway_ip = gw_addr
config = one_hundred_gbe.create_config()
line_rate = pfcwd_params['traffic_line_rate']
pause_line_rate = pfcwd_params['pause_line_rate']
start_delay = pfcwd_params['start_delay']
frame_size = pfcwd_params['frame_size']
t_start_pause = pfcwd_params['t_start_pause']
######################################################################
# Device Configuration
######################################################################
port1 = config.ports[0]
port2 = config.ports[1]
port3 = config.ports[2]
#Device 1 configuration
port1.devices = [
Device(name='Port 1',
device_count=1,
choice=Ipv4(name='Ipv4 1',
address=Pattern(device1_ip),
prefix=Pattern('24'),
gateway=Pattern(device1_gateway_ip),
ethernet=Ethernet(name='Ethernet 1')))
]
#Device 2 configuration
port2.devices = [
Device(name='Port 2',
device_count=1,
choice=Ipv4(name='Ipv4 2',
address=Pattern(device2_ip),
prefix=Pattern('24'),
gateway=Pattern(device2_gateway_ip),
ethernet=Ethernet(name='Ethernet 2')))
]
#Device 3 configuration
port3.devices = [
Device(name='Port 3',
device_count=1,
choice=Ipv4(name='Ipv4 3',
address=Pattern(device3_ip),
prefix=Pattern('24'),
gateway=Pattern(device3_gateway_ip),
ethernet=Ethernet(name='Ethernet 3')))
]
device1 = port1.devices[0]
device2 = port2.devices[0]
device3 = port3.devices[0]
######################################################################
# Traffic configuration Traffic 1->2
######################################################################
dscp_pi = Priority(Dscp(phb=FieldPattern(choice=[str(pi)])))
flow_1to2 = Flow(name="Traffic 1->2",
tx_rx=TxRx(
DeviceTxRx(tx_device_names=[device1.name],
rx_device_names=[device2.name])),
packet=[
Header(choice=EthernetHeader()),
Header(choice=Ipv4Header(priority=dscp_pi)),
],
size=Size(frame_size),
rate=Rate('line', line_rate),
duration=Duration(
Continuous(delay=start_delay,
delay_unit='nanoseconds')))
config.flows.append(flow_1to2)
######################################################################
# Traffic configuration Traffic 2->1
######################################################################
flow_2to1 = Flow(name="Traffic 2->1",
tx_rx=TxRx(
DeviceTxRx(tx_device_names=[device2.name],
rx_device_names=[device1.name])),
packet=[
Header(choice=EthernetHeader()),
Header(choice=Ipv4Header(priority=dscp_pi)),
],
size=Size(frame_size),
rate=Rate('line', line_rate),
duration=Duration(
Continuous(delay=start_delay,
delay_unit='nanoseconds')))
config.flows.append(flow_2to1)
######################################################################
# Traffic configuration Traffic 2->3
#######################################################################
flow_2to3 = Flow(name="Traffic 2->3",
tx_rx=TxRx(
DeviceTxRx(tx_device_names=[device2.name],
rx_device_names=[device3.name])),
packet=[
Header(choice=EthernetHeader()),
Header(choice=Ipv4Header(priority=dscp_pi)),
],
size=Size(frame_size),
rate=Rate('line', line_rate),
duration=Duration(
Continuous(delay=start_delay,
delay_unit='nanoseconds')))
config.flows.append(flow_2to3)
######################################################################
# Traffic configuration Traffic 3->2
#######################################################################
flow_3to2 = Flow(name="Traffic 3->2",
tx_rx=TxRx(
DeviceTxRx(tx_device_names=[device3.name],
rx_device_names=[device2.name])),
packet=[
Header(choice=EthernetHeader()),
Header(choice=Ipv4Header(priority=dscp_pi)),
],
size=Size(frame_size),
rate=Rate('line', line_rate),
duration=Duration(
Continuous(delay=start_delay,
delay_unit='nanoseconds')))
config.flows.append(flow_3to2)
#######################################################################
# Traffic configuration Pause
#######################################################################
if (pi == 3):
pause = Header(
PfcPause(
dst=FieldPattern(choice='01:80:C2:00:00:01'),
src=FieldPattern(choice='00:00:fa:ce:fa:ce'),
class_enable_vector=FieldPattern(choice='8'),
pause_class_0=FieldPattern(choice='0'),
pause_class_1=FieldPattern(choice='0'),
pause_class_2=FieldPattern(choice='0'),
pause_class_3=FieldPattern(choice='ffff'),
pause_class_4=FieldPattern(choice='0'),
pause_class_5=FieldPattern(choice='0'),
pause_class_6=FieldPattern(choice='0'),
pause_class_7=FieldPattern(choice='0'),
))
elif (pi == 4):
pause = Header(
PfcPause(
dst=FieldPattern(choice='01:80:C2:00:00:01'),
src=FieldPattern(choice='00:00:fa:ce:fa:ce'),
class_enable_vector=FieldPattern(choice='10'),
pause_class_0=FieldPattern(choice='0'),
pause_class_1=FieldPattern(choice='0'),
pause_class_2=FieldPattern(choice='0'),
pause_class_3=FieldPattern(choice='0'),
pause_class_4=FieldPattern(choice='ffff'),
pause_class_5=FieldPattern(choice='0'),
pause_class_6=FieldPattern(choice='0'),
pause_class_7=FieldPattern(choice='0'),
))
else:
pytest_assert(
False, "This testcase supports only lossless priorities 3 & 4")
pause_flow = Flow(name='Pause Storm',
tx_rx=TxRx(
PortTxRx(tx_port_name=port3.name,
rx_port_names=[port3.name])),
packet=[pause],
size=Size(64),
rate=Rate('line', value=pause_line_rate),
duration=Duration(
Continuous(delay=t_start_pause * (10**9),
delay_unit='nanoseconds')))
config.flows.append(pause_flow)
return config
def test_testbed(conn_graph_facts, duthosts, rand_one_dut_hostname,
fanout_graph_facts, ixia_api_server_session, fanouthosts):
duthost = duthosts[rand_one_dut_hostname]
logger.info("Connection Graph Facts = %s " % (conn_graph_facts))
logger.info("Fanout Graph facts = %s" % (fanout_graph_facts))
logger.info("DUT hostname = %s" % (duthost.hostname))
ixia_fanout = get_peer_ixia_chassis(conn_data=conn_graph_facts,
dut_hostname=duthost.hostname)
pytest_require(ixia_fanout is not None,
skip_message="Cannot find the peer IXIA chassis")
ixia_fanout_id = list(fanout_graph_facts.keys()).index(ixia_fanout)
ixia_fanout_list = IxiaFanoutManager(fanout_graph_facts)
ixia_fanout_list.get_fanout_device_details(device_number=ixia_fanout_id)
logger.info("Configuring ports.")
port_list = ixia_fanout_list.get_ports(peer_device=duthost.hostname)
session = ixia_api_server_session
vports = configure_ports(session=session, port_list=port_list)
subnet = get_vlan_subnet(duthost)
gw = subnet.split('/')[0]
ip_list = get_addrs_in_subnet(subnet=subnet, number_of_ip=len(vports))
logger.info("Creating topology.")
topo_receiver = create_topology(session=session,
name="Receiver",
port_list=[vports[0]],
ip_list=[ip_list[0]],
gw_list=[gw])
topo_sender = create_topology(session=session,
name="Sender",
port_list=vports[1:],
ip_list=ip_list[1:],
gw_list=[gw] * len(vports[1:]))
logger.info("Starting all protocols")
start_protocols(session)
# Create a traffic item
logger.info("Configuring traffic.")
traffic_item = create_ipv4_traffic(session=session,
name="Test Data Traffic",
source=topo_sender,
destination=topo_receiver)
# Generate, apply and start traffic.
start_traffic(session)
logger.info("run traffic for 5 seconds")
time.sleep(5)
# Fetch per-flow statistics.
stats = dump_flow_statistics(session=session)
logger.info(stats)
stop_traffic(session)
stop_protocols(session)
def base_configs(testbed, conn_graph_facts, duthost, lossless_prio_dscp_map,
one_hundred_gbe, start_delay, pause_line_rate,
traffic_line_rate, frame_size, ecn_thresholds, serializer):
for config in one_hundred_gbe:
start_delay = start_delay * 1000000000.0
test_dscp_list = [str(prio) for prio in lossless_prio_dscp_map]
tx = config.ports[0]
rx = config.ports[1]
vlan_subnet = get_vlan_subnet(duthost)
pytest_assert(vlan_subnet is not None,
"Fail to get Vlan subnet information")
vlan_ip_addrs = get_addrs_in_subnet(vlan_subnet, 2)
gw_addr = vlan_subnet.split('/')[0]
interface_ip_addr = vlan_ip_addrs[0]
tx_port_ip = vlan_ip_addrs[1]
rx_port_ip = vlan_ip_addrs[0]
tx_gateway_ip = gw_addr
rx_gateway_ip = gw_addr
test_flow_name = 'Test Data'
test_line_rate = traffic_line_rate
pause_line_rate = pause_line_rate
pytest_assert(test_line_rate <= pause_line_rate,
"test_line_rate + should be less than pause_line_rate")
######################################################################
# Create TX stack configuration
######################################################################
tx_ipv4 = Ipv4(name='Tx Ipv4',
address=Pattern(tx_port_ip),
prefix=Pattern('24'),
gateway=Pattern(tx_gateway_ip),
ethernet=Ethernet(name='Tx Ethernet'))
tx.devices.append(
Device(name='Tx Device', device_count=1, choice=tx_ipv4))
######################################################################
# Create RX stack configuration
######################################################################
rx_ipv4 = Ipv4(name='Rx Ipv4',
address=Pattern(rx_port_ip),
prefix=Pattern('24'),
gateway=Pattern(rx_gateway_ip),
ethernet=Ethernet(name='Rx Ethernet'))
rx.devices.append(
Device(name='Rx Device', device_count=1, choice=rx_ipv4))
######################################################################
# Traffic configuration Test data
######################################################################
data_endpoint = DeviceTxRx(
tx_device_names=[tx.devices[0].name],
rx_device_names=[rx.devices[0].name],
)
pytest_assert(ecn_thresholds < 1024 * 1024,
"keep the ECN thresholds less than 1MB")
test_dscp = Priority(
Dscp(phb=FieldPattern(choice=test_dscp_list),
ecn=FieldPattern(Dscp.ECN_CAPABLE_TRANSPORT_1)))
# ecn_thresholds in bytes
number_of_packets = int(2 * (ecn_thresholds / frame_size))
logger.info("Total number of packets to send = 2 * %s = %s"\
%(ecn_thresholds / frame_size, number_of_packets))
test_flow = Flow(name=test_flow_name,
tx_rx=TxRx(data_endpoint),
packet=[
Header(choice=EthernetHeader()),
Header(choice=Ipv4Header(priority=test_dscp))
],
size=Size(frame_size),
rate=Rate('line', test_line_rate),
duration=Duration(
FixedPackets(packets=number_of_packets,
delay=start_delay,
delay_unit='nanoseconds')))
config.flows.append(test_flow)
#######################################################################
# Traffic configuration Pause
#######################################################################
pause_endpoint = PortTxRx(tx_port_name='Rx', rx_port_names=['Rx'])
pause = Header(
PfcPause(
dst=FieldPattern(choice='01:80:C2:00:00:01'),
src=FieldPattern(choice='00:00:fa:ce:fa:ce'),
class_enable_vector=FieldPattern(choice='18'),
pause_class_0=FieldPattern(choice='0'),
pause_class_1=FieldPattern(choice='0'),
pause_class_2=FieldPattern(choice='0'),
pause_class_3=FieldPattern(choice='ffff'),
pause_class_4=FieldPattern(choice='ffff'),
pause_class_5=FieldPattern(choice='0'),
pause_class_6=FieldPattern(choice='0'),
pause_class_7=FieldPattern(choice='0'),
))
pause_flow = Flow(name='Pause Storm',
tx_rx=TxRx(pause_endpoint),
packet=[pause],
size=Size(64),
rate=Rate('line', value=100),
duration=Duration(
FixedPackets(packets=0,
delay=0,
delay_unit='nanoseconds')))
config.flows.append(pause_flow)
return one_hundred_gbe