def __gen_traffic(testbed_config,
port_config_list,
port_id,
pause_flow_name,
data_flow_name,
prio,
data_pkt_size,
data_pkt_cnt,
data_flow_delay_sec,
exp_dur_sec,
prio_dscp_map):
"""
Generate configurations of flows, including a data flow and a PFC pause storm.
Args:
testbed_config (obj): testbed L1/L2/L3 configuration
port_config_list (list): list of port configuration
port_id (int): ID of DUT port to test
pause_flow_name (str): name of the pause storm
data_flow_name (str): name of the data flow
prio (int): priority of the data flow and PFC pause storm
data_pkt_size (int): packet size of the data flow in byte
data_pkt_cnt (int): # of packets of the data flow
data_flow_delay_sec (float): start delay of the data flow in second
exp_dur_sec (float): experiment duration in second
prio_dscp_map (dict): Priority vs. DSCP map (key = priority).
Returns:
N/A
"""
rx_port_id = port_id
tx_port_id_list, rx_port_id_list = select_ports(port_config_list=port_config_list,
pattern="many to one",
rx_port_id=rx_port_id)
pytest_assert(len(tx_port_id_list) > 0, "Cannot find any TX ports")
tx_port_id = select_tx_port(tx_port_id_list=tx_port_id_list,
rx_port_id=rx_port_id)
pytest_assert(tx_port_id is not None, "Cannot find a suitable TX port")
tx_port_config = next((x for x in port_config_list if x.id == tx_port_id), None)
rx_port_config = next((x for x in port_config_list if x.id == rx_port_id), None)
tx_mac = tx_port_config.mac
if tx_port_config.gateway == rx_port_config.gateway and \
tx_port_config.prefix_len == rx_port_config.prefix_len:
""" If soruce and destination port are in the same subnet """
rx_mac = rx_port_config.mac
else:
rx_mac = tx_port_config.gateway_mac
tx_port_name = testbed_config.ports[tx_port_id].name
rx_port_name = testbed_config.ports[rx_port_id].name
data_flow_delay_nanosec = sec_to_nanosec(data_flow_delay_sec)
data_flow = testbed_config.flows.flow(name=data_flow_name)[-1]
data_flow.tx_rx.port.tx_name = tx_port_name
data_flow.tx_rx.port.rx_name = rx_port_name
eth, ipv4 = data_flow.packet.ethernet().ipv4()
eth.src.value = tx_mac
eth.dst.value = rx_mac
eth.pfc_queue.value = prio
ipv4.src.value = tx_port_config.ip
ipv4.dst.value = rx_port_config.ip
ipv4.priority.choice = ipv4.priority.DSCP
ipv4.priority.dscp.phb.values = prio_dscp_map[prio]
ipv4.priority.dscp.ecn.value = (
ipv4.priority.dscp.ecn.CAPABLE_TRANSPORT_1)
data_flow.size.fixed = data_pkt_size
data_flow.rate.percentage = 100
data_flow.duration.fixed_packets.packets = data_pkt_cnt
data_flow.duration.fixed_packets.delay.nanoseconds = int(data_flow_delay_nanosec)
data_flow.metrics.enable = True
data_flow.metrics.loss = True
""" PFC Pause Storm """
pause_time = []
for x in range(8):
if x == prio:
pause_time.append(int('ffff', 16))
else:
pause_time.append(int('0000', 16))
vector = pfc_class_enable_vector([prio])
pause_flow = testbed_config.flows.flow(name=pause_flow_name)[-1]
""" Pause frames are sent from the RX port """
pause_flow.tx_rx.port.tx_name = testbed_config.ports[rx_port_id].name
pause_flow.tx_rx.port.rx_name = testbed_config.ports[tx_port_id].name
pause_pkt = pause_flow.packet.pfcpause()[-1]
pause_pkt.src.value = '00:00:fa:ce:fa:ce'
pause_pkt.dst.value = '01:80:C2:00:00:01'
pause_pkt.class_enable_vector.value = vector
pause_pkt.pause_class_0.value = pause_time[0]
pause_pkt.pause_class_1.value = pause_time[1]
pause_pkt.pause_class_2.value = pause_time[2]
pause_pkt.pause_class_3.value = pause_time[3]
pause_pkt.pause_class_4.value = pause_time[4]
pause_pkt.pause_class_5.value = pause_time[5]
pause_pkt.pause_class_6.value = pause_time[6]
pause_pkt.pause_class_7.value = pause_time[7]
speed_str = testbed_config.layer1[0].speed
speed_gbps = int(speed_str.split('_')[1])
pause_dur = 65535 * 64 * 8.0 / (speed_gbps * 1e9)
pps = int(2 / pause_dur)
pause_flow.rate.pps = pps
pause_flow.size.fixed = 64
pause_flow.duration.fixed_seconds.seconds = exp_dur_sec
pause_flow.duration.fixed_seconds.delay.nanoseconds = 0
pause_flow.metrics.enable = True
pause_flow.metrics.loss = True
def __gen_traffic(testbed_config,
port_config_list,
port_id,
pause_flow_prefix,
pause_flow_count,
pause_flow_dur_sec,
pause_flow_gap_sec,
data_flow_prefix,
data_flow_dur_sec,
data_pkt_size,
prio_list,
prio_dscp_map):
"""
Generate flow configurations
Args:
testbed_config (obj): testbed L1/L2/L3 configuration
port_config_list (list): list of port configuration
port_id (int): ID of DUT port to test.
pause_flow_prefix (str): prefix of names of PFC pause storms
pause_flow_count (int): number of PFC pause storms
pause_flow_dur_sec (float): duration of each PFC pause storm
pause_flow_gap_sec (float): gap between PFC pause storms
data_flow_prefix (str): prefix of names of data flows
data_flow_dur_sec (int): duration of all the data flows
data_pkt_size (int): data packet size in bytes
prio_list (list): priorities to generate PFC storms and data traffic
prio_dscp_map (dict): Priority vs. DSCP map (key = priority).
Returns:
N/A
"""
rx_port_id = port_id
tx_port_id_list, rx_port_id_list = select_ports(port_config_list=port_config_list,
pattern="many to one",
rx_port_id=rx_port_id)
pytest_assert(len(tx_port_id_list) > 0, "Cannot find any TX ports")
tx_port_id = select_tx_port(tx_port_id_list=tx_port_id_list,
rx_port_id=rx_port_id)
pytest_assert(tx_port_id is not None, "Cannot find a suitable TX port")
tx_port_config = next((x for x in port_config_list if x.id == tx_port_id), None)
rx_port_config = next((x for x in port_config_list if x.id == rx_port_id), None)
tx_mac = tx_port_config.mac
if tx_port_config.gateway == rx_port_config.gateway and \
tx_port_config.prefix_len == rx_port_config.prefix_len:
""" If soruce and destination port are in the same subnet """
rx_mac = rx_port_config.mac
else:
rx_mac = tx_port_config.gateway_mac
""" Generate long-lived data flows, one for each priority """
data_flow_rate_percent = int(100 / len(prio_list))
tx_port_name = testbed_config.ports[tx_port_id].name
rx_port_name = testbed_config.ports[rx_port_id].name
for prio in prio_list:
data_flow = testbed_config.flows.flow(
name='{} Prio {}'.format(data_flow_prefix, prio))[-1]
data_flow.tx_rx.port.tx_name = tx_port_name
data_flow.tx_rx.port.rx_name = rx_port_name
eth, ipv4 = data_flow.packet.ethernet().ipv4()
eth.src.value = tx_mac
eth.dst.value = rx_mac
eth.pfc_queue.value = prio
ipv4.src.value = tx_port_config.ip
ipv4.dst.value = rx_port_config.ip
ipv4.priority.choice = ipv4.priority.DSCP
ipv4.priority.dscp.phb.values = prio_dscp_map[prio]
ipv4.priority.dscp.ecn.value = (
ipv4.priority.dscp.ecn.CAPABLE_TRANSPORT_1)
data_flow.size.fixed = data_pkt_size
data_flow.rate.percentage = data_flow_rate_percent
data_flow.duration.fixed_seconds.seconds = data_flow_dur_sec
data_flow.duration.fixed_seconds.delay.nanoseconds = 0
data_flow.metrics.enable = True
data_flow.metrics.loss = True
""" Generate a series of PFC storms """
speed_str = testbed_config.layer1[0].speed
speed_gbps = int(speed_str.split('_')[1])
pause_dur = 65535 * 64 * 8.0 / (speed_gbps * 1e9)
pause_pps = int(2 / pause_dur)
pause_pkt_cnt = pause_pps * pause_flow_dur_sec
for id in range(pause_flow_count):
pause_time = []
for x in range(8):
if x in prio_list:
pause_time.append(int('ffff', 16))
else:
pause_time.append(int('0000', 16))
vector = pfc_class_enable_vector(prio_list)
pause_flow = testbed_config.flows.flow(
name="{} {}".format(pause_flow_prefix, id))[-1]
pause_flow.tx_rx.port.tx_name = testbed_config.ports[rx_port_id].name
pause_flow.tx_rx.port.rx_name = testbed_config.ports[tx_port_id].name
pause_pkt = pause_flow.packet.pfcpause()[-1]
pause_pkt.src.value = '00:00:fa:ce:fa:ce'
pause_pkt.dst.value = '01:80:C2:00:00:01'
pause_pkt.class_enable_vector.value = vector
pause_pkt.pause_class_0.value = pause_time[0]
pause_pkt.pause_class_1.value = pause_time[1]
pause_pkt.pause_class_2.value = pause_time[2]
pause_pkt.pause_class_3.value = pause_time[3]
pause_pkt.pause_class_4.value = pause_time[4]
pause_pkt.pause_class_5.value = pause_time[5]
pause_pkt.pause_class_6.value = pause_time[6]
pause_pkt.pause_class_7.value = pause_time[7]
pause_flow_start_time = id * (pause_flow_dur_sec + pause_flow_gap_sec)
pause_flow.rate.pps = pause_pps
pause_flow.size.fixed = 64
pause_flow.duration.fixed_packets.packets = int(pause_pkt_cnt)
pause_flow.duration.fixed_packets.delay.nanoseconds = int(
sec_to_nanosec(pause_flow_start_time))
pause_flow.metrics.enable = True
pause_flow.metrics.loss = True
def __gen_traffic(testbed_config,
port_config_list,
port_id,
data_flow_name,
data_flow_dur_sec,
data_pkt_size,
prio_list,
prio_dscp_map):
"""
Generate configurations of flows
Args:
testbed_config (obj): testbed L1/L2/L3 configuration
port_config_list (list): list of port configuration
port_id (int): ID of DUT port to test.
data_flow_name (str): data flow name
data_flow_dur_sec (int): duration of data flows in second
data_pkt_size (int): size of data packets in byte
prio_list (list): priorities of data flows
prio_dscp_map (dict): Priority vs. DSCP map (key = priority).
Returns:
N/A
"""
rx_port_id = port_id
tx_port_id_list, rx_port_id_list = select_ports(port_config_list=port_config_list,
pattern="many to one",
rx_port_id=rx_port_id)
pytest_assert(len(tx_port_id_list) > 0, "Cannot find any TX ports")
tx_port_id = select_tx_port(tx_port_id_list=tx_port_id_list,
rx_port_id=rx_port_id)
pytest_assert(tx_port_id is not None, "Cannot find a suitable TX port")
tx_port_config = next((x for x in port_config_list if x.id == tx_port_id), None)
rx_port_config = next((x for x in port_config_list if x.id == rx_port_id), None)
tx_mac = tx_port_config.mac
if tx_port_config.gateway == rx_port_config.gateway and \
tx_port_config.prefix_len == rx_port_config.prefix_len:
""" If soruce and destination port are in the same subnet """
rx_mac = rx_port_config.mac
else:
rx_mac = tx_port_config.gateway_mac
tx_port_name = testbed_config.ports[tx_port_id].name
rx_port_name = testbed_config.ports[rx_port_id].name
data_flow_rate_percent = int(100 / len(prio_list))
""" For each priority """
for prio in prio_list:
data_flow = testbed_config.flows.flow(
name='{} Prio {}'.format(data_flow_name, prio))[-1]
data_flow.tx_rx.port.tx_name = tx_port_name
data_flow.tx_rx.port.rx_name = rx_port_name
eth, ipv4 = data_flow.packet.ethernet().ipv4()
eth.src.value = tx_mac
eth.dst.value = rx_mac
eth.pfc_queue.value = prio
ipv4.src.value = tx_port_config.ip
ipv4.dst.value = rx_port_config.ip
ipv4.priority.choice = ipv4.priority.DSCP
ipv4.priority.dscp.phb.values = prio_dscp_map[prio]
ipv4.priority.dscp.ecn.value = (
ipv4.priority.dscp.ecn.CAPABLE_TRANSPORT_1)
data_flow.size.fixed = data_pkt_size
data_flow.rate.percentage = data_flow_rate_percent
data_flow.duration.fixed_seconds.seconds = data_flow_dur_sec
data_flow.metrics.enable = True
data_flow.metrics.loss = True
def __gen_traffic(testbed_config, port_config_list, port_id, pause_flow_name,
global_pause, pause_prio_list, test_flow_name,
test_flow_prio_list, test_flow_rate_percent, bg_flow_name,
bg_flow_prio_list, bg_flow_rate_percent, data_flow_dur_sec,
data_flow_delay_sec, data_pkt_size, prio_dscp_map):
"""
Generate configurations of flows, including test flows, background flows and
pause storm. Test flows and background flows are also known as data flows.
Args:
testbed_config (obj): testbed L1/L2/L3 configuration
port_config_list (list): list of port configuration
port_id (int): ID of DUT port to test
pause_flow_name (str): name of pause storm
global_pause (bool): if pause frame is IEEE 802.3X pause
pause_prio_list (list): priorities to pause for pause frames
test_flow_name (str): name of test flows
test_prio_list (list): priorities of test flows
test_flow_rate_percent (int): rate percentage for each test flow
bg_flow_name (str): name of background flows
bg_prio_list (list): priorities of background flows
bg_flow_rate_percent (int): rate percentage for each background flow
data_flow_dur_sec (int): duration of data flows in second
data_flow_delay_sec (int): start delay of data flows in second
data_pkt_size (int): packet size of data flows in byte
prio_dscp_map (dict): Priority vs. DSCP map (key = priority).
Returns:
flows configurations (list): the list should have configurations of
len(test_flow_prio_list) test flow, len(bg_flow_prio_list) background
flows and a pause storm.
"""
rx_port_id = port_id
tx_port_id_list, rx_port_id_list = select_ports(
port_config_list=port_config_list,
pattern="many to one",
rx_port_id=rx_port_id)
pytest_assert(len(tx_port_id_list) > 0, "Cannot find any TX ports")
tx_port_id = select_tx_port(tx_port_id_list=tx_port_id_list,
rx_port_id=rx_port_id)
pytest_assert(tx_port_id is not None, "Cannot find a suitable TX port")
tx_port_config = next((x for x in port_config_list if x.id == tx_port_id),
None)
rx_port_config = next((x for x in port_config_list if x.id == rx_port_id),
None)
tx_mac = tx_port_config.mac
if tx_port_config.gateway == rx_port_config.gateway and \
tx_port_config.prefix_len == rx_port_config.prefix_len:
""" If soruce and destination port are in the same subnet """
rx_mac = rx_port_config.mac
else:
rx_mac = tx_port_config.gateway_mac
tx_port_name = testbed_config.ports[tx_port_id].name
rx_port_name = testbed_config.ports[rx_port_id].name
data_flow_delay_nanosec = sec_to_nanosec(data_flow_delay_sec)
""" Test flows """
for prio in test_flow_prio_list:
test_flow = testbed_config.flows.flow(
name='{} Prio {}'.format(test_flow_name, prio))[-1]
test_flow.tx_rx.port.tx_name = tx_port_name
test_flow.tx_rx.port.rx_name = rx_port_name
eth, ipv4 = test_flow.packet.ethernet().ipv4()
eth.src.value = tx_mac
eth.dst.value = rx_mac
eth.pfc_queue.value = prio
ipv4.src.value = tx_port_config.ip
ipv4.dst.value = rx_port_config.ip
ipv4.priority.choice = ipv4.priority.DSCP
ipv4.priority.dscp.phb.values = prio_dscp_map[prio]
ipv4.priority.dscp.ecn.value = (
ipv4.priority.dscp.ecn.CAPABLE_TRANSPORT_1)
test_flow.size.fixed = data_pkt_size
test_flow.rate.percentage = test_flow_rate_percent
test_flow.duration.fixed_seconds.seconds = data_flow_dur_sec
test_flow.duration.fixed_seconds.delay.nanoseconds = int(
data_flow_delay_nanosec)
test_flow.metrics.enable = True
test_flow.metrics.loss = True
""" Background flows """
for prio in bg_flow_prio_list:
bg_flow = testbed_config.flows.flow(
name='{} Prio {}'.format(bg_flow_name, prio))[-1]
bg_flow.tx_rx.port.tx_name = tx_port_name
bg_flow.tx_rx.port.rx_name = rx_port_name
eth, ipv4 = bg_flow.packet.ethernet().ipv4()
eth.src.value = tx_mac
eth.dst.value = rx_mac
eth.pfc_queue.value = prio
ipv4.src.value = tx_port_config.ip
ipv4.dst.value = rx_port_config.ip
ipv4.priority.choice = ipv4.priority.DSCP
ipv4.priority.dscp.phb.values = prio_dscp_map[prio]
ipv4.priority.dscp.ecn.value = (
ipv4.priority.dscp.ecn.CAPABLE_TRANSPORT_1)
bg_flow.size.fixed = data_pkt_size
bg_flow.rate.percentage = bg_flow_rate_percent
bg_flow.duration.fixed_seconds.seconds = data_flow_dur_sec
bg_flow.duration.fixed_seconds.delay.nanoseconds = int(
data_flow_delay_nanosec)
bg_flow.metrics.enable = True
bg_flow.metrics.loss = True
""" Pause storm """
pause_flow = testbed_config.flows.flow(name=pause_flow_name)[-1]
pause_flow.tx_rx.port.tx_name = testbed_config.ports[rx_port_id].name
pause_flow.tx_rx.port.rx_name = testbed_config.ports[tx_port_id].name
if global_pause:
pause_pkt = pause_flow.packet.ethernetpause()[-1]
pause_pkt.src.value = '00:00:fa:ce:fa:ce'
pause_pkt.dst.value = '01:80:C2:00:00:01'
else:
pause_time = []
for x in range(8):
if x in pause_prio_list:
pause_time.append(int('ffff', 16))
else:
pause_time.append(int('0000', 16))
vector = pfc_class_enable_vector(pause_prio_list)
pause_pkt = pause_flow.packet.pfcpause()[-1]
pause_pkt.src.value = '00:00:fa:ce:fa:ce'
pause_pkt.dst.value = '01:80:C2:00:00:01'
pause_pkt.class_enable_vector.value = vector
pause_pkt.pause_class_0.value = pause_time[0]
pause_pkt.pause_class_1.value = pause_time[1]
pause_pkt.pause_class_2.value = pause_time[2]
pause_pkt.pause_class_3.value = pause_time[3]
pause_pkt.pause_class_4.value = pause_time[4]
pause_pkt.pause_class_5.value = pause_time[5]
pause_pkt.pause_class_6.value = pause_time[6]
pause_pkt.pause_class_7.value = pause_time[7]
""" Pause frames are sent from the RX port """
speed_str = testbed_config.layer1[0].speed
speed_gbps = int(speed_str.split('_')[1])
pause_dur = 65535 * 64 * 8.0 / (speed_gbps * 1e9)
pps = int(2 / pause_dur)
pause_flow.rate.pps = pps
pause_flow.size.fixed = 64
pause_flow.duration.choice = pause_flow.duration.CONTINUOUS
pause_flow.duration.continuous.delay.nanoseconds = 0
pause_flow.metrics.enable = True
pause_flow.metrics.loss = True
