def ixia_testbed_config(conn_graph_facts, fanout_graph_facts, duthosts,
rand_one_dut_hostname):
"""
Geenrate Tgen API config and port config information for the 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:
- config (obj): Tgen API config of the testbed
- port_config_list (list): list of port configuration information
"""
duthost = duthosts[rand_one_dut_hostname]
""" Generate L1 config """
ixia_fanout = get_peer_ixia_chassis(conn_data=conn_graph_facts,
dut_hostname=duthost.hostname)
pytest_assert(ixia_fanout is not None, 'Fail to get ixia_fanout')
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 = []
port_names = []
port_speed = None
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'])
pytest_assert(port_speed == int(ixia_ports[i]['speed']),
'Ports have different link speeds')
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)
speed_gbps = int(port_speed / 1000)
l1_config = Layer1(name='L1 config',
speed='speed_{}_gbps'.format(speed_gbps),
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)))
port_config_list = []
config_result = __vlan_intf_config(config=config,
port_config_list=port_config_list,
duthost=duthost,
ixia_ports=ixia_ports)
pytest_assert(config_result is True, 'Fail to configure Vlan interfaces')
config_result = __portchannel_intf_config(
config=config,
port_config_list=port_config_list,
duthost=duthost,
ixia_ports=ixia_ports)
pytest_assert(config_result is True,
'Fail to configure portchannel interfaces')
return config, port_config_list
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 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