"""
if node.get(u"type") is None:
msg = u"Node type is not defined"
- elif node['type'] != NodeType.TG:
+ elif node[u"type"] != NodeType.TG:
msg = f"Node type is {node[u'type']!r}, not a TG"
elif node.get(u"subtype") is None:
msg = u"TG subtype is not defined"
return tg_instance.get_latency_int()
+class TrexMode:
+ """Defines mode of T-Rex traffic generator."""
+ # Advanced stateful mode
+ ASTF = u"ASTF"
+ # Stateless mode
+ STL = u"STL"
+
+
# TODO: Pylint says too-many-instance-attributes.
-# A fix is developed in https://gerrit.fd.io/r/c/csit/+/22221
class TrafficGenerator(AbstractMeasurer):
- """Traffic Generator.
-
- FIXME: Describe API."""
+ """Traffic Generator."""
- # TODO: Decrease friction between various search and rate provider APIs.
# TODO: Remove "trex" from lines which could work with other TGs.
# Use one instance of TrafficGenerator for all tests in test suite
ROBOT_LIBRARY_SCOPE = u"TEST SUITE"
def __init__(self):
- # TODO: Number of fields will be reduced with CSIT-1378.
self._node = None
- # T-REX interface order mapping
+ self._mode = None
+ # TG interface order mapping
self._ifaces_reordered = False
# Result holding fields, to be removed.
self._result = None
self._received = None
self._approximated_rate = None
self._approximated_duration = None
+ self._l7_data = None
# Measurement input fields, needed for async stop result.
self._start_time = None
self._rate = None
self.negative_loss = None
# Transient data needed for async measurements.
self._xstats = (None, None)
- # TODO: Rename "xstats" to something opaque, so TRex is not privileged?
+ # TODO: Rename "xstats" to something opaque, so T-Rex is not privileged?
@property
def node(self):
return self._latency
def get_approximated_rate(self):
- """Return approximated rate computed as ratio of transmited packets over
- duration of trial.
+ """Return approximated rate computed as ratio of transmitted packets
+ over duration of trial.
:returns: Approximated rate.
:rtype: str
"""
return self._approximated_rate
+ def get_l7_data(self):
+ """Return L7 data.
+
+ :returns: Number of received packets.
+ :rtype: dict
+ """
+ return self._l7_data
+
+ def check_mode(self, expected_mode):
+ """Check TG mode.
+
+ :param expected_mode: Expected traffic generator mode.
+ :type expected_mode: object
+ :raises RuntimeError: In case of unexpected TG mode.
+ """
+ if self._mode == expected_mode:
+ return
+ raise RuntimeError(
+ f"{self._node[u'subtype']} not running in {expected_mode} mode!"
+ )
+
# TODO: pylint says disable=too-many-locals.
# A fix is developed in https://gerrit.fd.io/r/c/csit/+/22221
def initialize_traffic_generator(
subtype = check_subtype(tg_node)
if subtype == NodeSubTypeTG.TREX:
self._node = tg_node
-
- if1_pci = Topology().get_interface_pci_addr(self._node, tg_if1)
- if2_pci = Topology().get_interface_pci_addr(self._node, tg_if2)
- if1_addr = Topology().get_interface_mac(self._node, tg_if1)
- if2_addr = Topology().get_interface_mac(self._node, tg_if2)
+ self._mode = TrexMode.ASTF if osi_layer == u"L7" else TrexMode.STL
+ if1 = dict()
+ if2 = dict()
+ if1[u"pci"] = Topology().get_interface_pci_addr(self._node, tg_if1)
+ if2[u"pci"] = Topology().get_interface_pci_addr(self._node, tg_if2)
+ if1[u"addr"] = Topology().get_interface_mac(self._node, tg_if1)
+ if2[u"addr"] = Topology().get_interface_mac(self._node, tg_if2)
if osi_layer == u"L2":
- if1_adj_addr = if2_addr
- if2_adj_addr = if1_addr
- elif osi_layer == u"L3":
- if1_adj_addr = Topology().get_interface_mac(
- tg_if1_adj_node, tg_if1_adj_if
- )
- if2_adj_addr = Topology().get_interface_mac(
- tg_if2_adj_node, tg_if2_adj_if
- )
- elif osi_layer == u"L7":
- if1_addr = Topology().get_interface_ip4(self._node, tg_if1)
- if2_addr = Topology().get_interface_ip4(self._node, tg_if2)
- if1_adj_addr = Topology().get_interface_ip4(
+ if1[u"adj_addr"] = if2[u"addr"]
+ if2[u"adj_addr"] = if1[u"addr"]
+ elif osi_layer in (u"L3", u"L7"):
+ if1[u"adj_addr"] = Topology().get_interface_mac(
tg_if1_adj_node, tg_if1_adj_if
)
- if2_adj_addr = Topology().get_interface_ip4(
+ if2[u"adj_addr"] = Topology().get_interface_mac(
tg_if2_adj_node, tg_if2_adj_if
)
else:
- raise ValueError(u"Unknown Test Type")
+ raise ValueError(u"Unknown OSI layer!")
# in case of switched environment we can override MAC addresses
if tg_if1_dst_mac is not None and tg_if2_dst_mac is not None:
- if1_adj_addr = tg_if1_dst_mac
- if2_adj_addr = tg_if2_dst_mac
+ if1[u"adj_addr"] = tg_if1_dst_mac
+ if2[u"adj_addr"] = tg_if2_dst_mac
- if min(if1_pci, if2_pci) != if1_pci:
- if1_pci, if2_pci = if2_pci, if1_pci
- if1_addr, if2_addr = if2_addr, if1_addr
- if1_adj_addr, if2_adj_addr = if2_adj_addr, if1_adj_addr
+ if min(if1[u"pci"], if2[u"pci"]) != if1[u"pci"]:
+ if1, if2 = if2, if1
self._ifaces_reordered = True
master_thread_id, latency_thread_id, socket, threads = \
self._node, tg_if1, tg_if2,
tg_dtc=Constants.TREX_CORE_COUNT)
- if osi_layer in (u"L2", u"L3"):
- dst_mac0 = f"0x{if1_adj_addr.replace(u':', u',0x')}"
- src_mac0 = f"0x{if1_addr.replace(u':', u',0x')}"
- dst_mac1 = f"0x{if2_adj_addr.replace(u':', u',0x')}"
- src_mac1 = f"0x{if2_addr.replace(u':', u',0x')}"
+ if osi_layer in (u"L2", u"L3", u"L7"):
exec_cmd_no_error(
self._node,
f"sh -c 'cat << EOF > /etc/trex_cfg.yaml\n"
f"- version: 2\n"
f" c: {len(threads)}\n"
f" limit_memory: {Constants.TREX_LIMIT_MEMORY}\n"
- f" interfaces: [\"{if1_pci}\",\"{if2_pci}\"]\n"
+ f" interfaces: [\"{if1[u'pci']}\",\"{if2[u'pci']}\"]\n"
f" port_info:\n"
- f" - dest_mac: [{dst_mac0}]\n"
- f" src_mac: [{src_mac0}]\n"
- f" - dest_mac: [{dst_mac1}]\n"
- f" src_mac: [{src_mac1}]\n"
+ f" - dest_mac: \'{if1[u'adj_addr']}\'\n"
+ f" src_mac: \'{if1[u'addr']}\'\n"
+ f" - dest_mac: \'{if2[u'adj_addr']}\'\n"
+ f" src_mac: \'{if2[u'addr']}\'\n"
f" platform :\n"
f" master_thread_id: {master_thread_id}\n"
f" latency_thread_id: {latency_thread_id}\n"
f" - socket: {socket}\n"
f" threads: {threads}\n"
f"EOF'",
- sudo=True, message=u"TRex config generation!"
- )
- elif osi_layer == u"L7":
- exec_cmd_no_error(
- self._node,
- f"sh -c 'cat << EOF > /etc/trex_cfg.yaml\n"
- f"- version: 2\n"
- f" c: {len(threads)}\n"
- f" limit_memory: {Constants.TREX_LIMIT_MEMORY}\n"
- f" interfaces: [\"{if1_pci}\",\"{if2_pci}\"]\n"
- f" port_info:\n"
- f" - ip: [{if1_addr}]\n"
- f" default_gw: [{if1_adj_addr}]\n"
- f" - ip: [{if2_addr}]\n"
- f" default_gw: [{if2_adj_addr}]\n"
- f" platform :\n"
- f" master_thread_id: {master_thread_id}\n"
- f" latency_thread_id: {latency_thread_id}\n"
- f" dual_if:\n"
- f" - socket: {socket}\n"
- f" threads: {threads}\n"
- f"EOF'",
- sudo=True, message=u"TRex config generation!"
+ sudo=True, message=u"T-Rex config generation!"
)
else:
- raise ValueError(u"Unknown Test Type!")
+ raise ValueError(u"Unknown OSI layer!")
TrafficGenerator.startup_trex(
self._node, osi_layer, subtype=subtype
:type tg_node: dict
:type osi_layer: str
:type subtype: NodeSubTypeTG
- :raises RuntimeError: If node subtype is not a TREX or startup failed.
+ :raises RuntimeError: If T-Rex startup failed.
+ :raises ValueError: If OSI layer is not supported.
"""
if not subtype:
subtype = check_subtype(tg_node)
)
raise RuntimeError(u"Start TRex failed!")
- # Test if TRex starts successfuly.
- command_line = OptionString().add(u"python3")
- dirname = f"{Constants.REMOTE_FW_DIR}/GPL/tools/trex"
- command_line.add(f"'{dirname}/trex_server_info.py'")
+ # Test T-Rex API responsiveness.
+ cmd = u"python3"
+ cmd += f" {Constants.REMOTE_FW_DIR}/GPL/tools/trex/"
+ if osi_layer in (u"L2", u"L3"):
+ cmd += f"trex_stl_assert.py"
+ elif osi_layer == u"L7":
+ cmd += f"trex_astf_assert.py"
+ else:
+ raise ValueError(u"Unknown OSI layer!")
try:
exec_cmd_no_error(
- tg_node, command_line, sudo=True,
- message=u"Test TRex failed!", retries=20
+ tg_node, cmd, sudo=True,
+ message=u"T-Rex API is not responding!", retries=20
)
except RuntimeError:
continue
# After max retries TRex is still not responding to API critical
# error occurred.
exec_cmd(tg_node, u"cat /tmp/trex.log", sudo=True)
- raise RuntimeError(u"Start TRex failed after multiple retries!")
+ raise RuntimeError(u"Start T-Rex failed after multiple retries!")
@staticmethod
def is_trex_running(node):
- """Check if TRex is running using pidof.
+ """Check if T-Rex is running using pidof.
:param node: Traffic generator node.
:type node: dict
- :returns: True if TRex is running otherwise False.
+ :returns: True if T-Rex is running otherwise False.
:rtype: bool
- :raises RuntimeError: If node type is not a TG.
"""
ret, _, _ = exec_cmd(node, u"pgrep t-rex", sudo=True)
return bool(int(ret) == 0)
:type node: dict
:returns: nothing
:raises RuntimeError: If node type is not a TG,
- or if TRex teardown fails.
+ or if T-Rex teardown fails.
"""
subtype = check_subtype(node)
if subtype == NodeSubTypeTG.TREX:
u"sh -c "
u"\"if pgrep t-rex; then sudo pkill t-rex && sleep 3; fi\"",
sudo=False,
- message=u"pkill t-rex failed"
+ message=u"T-Rex kill failed!"
)
def _parse_traffic_results(self, stdout):
"""Parse stdout of scripts into fields of self.
Block of code to reuse, by sync start, or stop after async.
- TODO: Is the output TG subtype dependent?
:param stdout: Text containing the standard output.
:type stdout: str
"""
- # last line from console output
- line = stdout.splitlines()[-1]
- self._result = line
- logger.info(f"TrafficGen result: {self._result}")
- self._received = self._result.split(u", ")[1].split(u"=", 1)[1]
- self._sent = self._result.split(u", ")[2].split(u"=", 1)[1]
- self._loss = self._result.split(u", ")[3].split(u"=", 1)[1]
- self._approximated_duration = \
- self._result.split(u", ")[5].split(u"=", 1)[1]
- self._approximated_rate = self._result.split(u", ")[6].split(u"=", 1)[1]
- self._latency = list()
- self._latency.append(self._result.split(u", ")[7].split(u"=", 1)[1])
- self._latency.append(self._result.split(u", ")[8].split(u"=", 1)[1])
+ subtype = check_subtype(self._node)
+ if subtype == NodeSubTypeTG.TREX:
+ # Last line from console output
+ line = stdout.splitlines()[-1]
+ results = line.split(",")
+ if results[-1] == u" ":
+ results.remove(u" ")
+ self._result = dict()
+ for result in results:
+ key, value = result.split(u"=", maxsplit=1)
+ self._result[key.strip()] = value
+ logger.info(f"TrafficGen results:\n{self._result}")
+ self._received = self._result.get(u"total_received")
+ self._sent = self._result.get(u"total_sent")
+ self._loss = self._result.get(u"frame_loss")
+ self._approximated_duration = \
+ self._result.get(u"approximated_duration")
+ self._approximated_rate = self._result.get(u"approximated_rate")
+ self._latency = list()
+ self._latency.append(self._result.get(u"latency_stream_0(usec)"))
+ self._latency.append(self._result.get(u"latency_stream_1(usec)"))
+ if self._mode == TrexMode.ASTF:
+ self._l7_data = dict()
+ self._l7_data[u"client"] = dict()
+ self._l7_data[u"client"][u"active_flows"] = \
+ self._result.get(u"client_active_flows")
+ self._l7_data[u"client"][u"established_flows"] = \
+ self._result.get(u"client_established_flows")
+ self._l7_data[u"server"] = dict()
+ self._l7_data[u"server"][u"active_flows"] = \
+ self._result.get(u"server_active_flows")
+ self._l7_data[u"server"][u"established_flows"] = \
+ self._result.get(u"server_established_flows")
+ if u"udp" in self.traffic_profile:
+ self._l7_data[u"client"][u"udp"] = dict()
+ self._l7_data[u"client"][u"udp"][u"established_flows"] = \
+ self._result.get(u"client_udp_connects")
+ self._l7_data[u"client"][u"udp"][u"closed_flows"] = \
+ self._result.get(u"client_udp_closed")
+ self._l7_data[u"server"][u"udp"] = dict()
+ self._l7_data[u"server"][u"udp"][u"accepted_flows"] = \
+ self._result.get(u"server_udp_accepts")
+ self._l7_data[u"server"][u"udp"][u"closed_flows"] = \
+ self._result.get(u"server_udp_closed")
+ elif u"tcp" in self.traffic_profile:
+ self._l7_data[u"client"][u"tcp"] = dict()
+ self._l7_data[u"client"][u"tcp"][u"initiated_flows"] = \
+ self._result.get(u"client_tcp_connect_inits")
+ self._l7_data[u"client"][u"tcp"][u"established_flows"] = \
+ self._result.get(u"client_tcp_connects")
+ self._l7_data[u"client"][u"tcp"][u"closed_flows"] = \
+ self._result.get(u"client_tcp_closed")
+ self._l7_data[u"server"][u"tcp"] = dict()
+ self._l7_data[u"server"][u"tcp"][u"accepted_flows"] = \
+ self._result.get(u"server_tcp_accepts")
+ self._l7_data[u"server"][u"tcp"][u"established_flows"] = \
+ self._result.get(u"server_tcp_connects")
+ self._l7_data[u"server"][u"tcp"][u"closed_flows"] = \
+ self._result.get(u"server_tcp_closed")
+
+ def trex_astf_stop_remote_exec(self, node):
+ """Execute T-Rex ASTF script on remote node over ssh to stop running
+ traffic.
+
+ Internal state is updated with measurement results.
+
+ :param node: T-Rex generator node.
+ :type node: dict
+ :raises RuntimeError: If stop traffic script fails.
+ """
+ command_line = OptionString().add(u"python3")
+ dirname = f"{Constants.REMOTE_FW_DIR}/GPL/tools/trex"
+ command_line.add(f"'{dirname}/trex_astf_stop.py'")
+ command_line.change_prefix(u"--")
+ for index, value in enumerate(self._xstats):
+ if value is not None:
+ value = value.replace(u"'", u"\"")
+ command_line.add_equals(f"xstat{index}", f"'{value}'")
+ stdout, _ = exec_cmd_no_error(
+ node, command_line,
+ message=u"T-Rex ASTF runtime error!"
+ )
+ self._parse_traffic_results(stdout)
def trex_stl_stop_remote_exec(self, node):
- """Execute script on remote node over ssh to stop running traffic.
+ """Execute T-Rex STL script on remote node over ssh to stop running
+ traffic.
Internal state is updated with measurement results.
- :param node: TRex generator node.
+ :param node: T-Rex generator node.
:type node: dict
:raises RuntimeError: If stop traffic script fails.
"""
- # No need to check subtype, we know it is TREX.
command_line = OptionString().add(u"python3")
dirname = f"{Constants.REMOTE_FW_DIR}/GPL/tools/trex"
- command_line.add(f"'{dirname}/trex_stateless_stop.py'")
+ command_line.add(f"'{dirname}/trex_stl_stop.py'")
command_line.change_prefix(u"--")
for index, value in enumerate(self._xstats):
if value is not None:
value = value.replace(u"'", u"\"")
command_line.add_equals(f"xstat{index}", f"'{value}'")
stdout, _ = exec_cmd_no_error(
- node, command_line, message=u"TRex stateless runtime error"
+ node, command_line,
+ message=u"T-Rex STL runtime error!"
)
self._parse_traffic_results(stdout)
+ def stop_traffic_on_tg(self):
+ """Stop all traffic on TG.
+
+ :returns: Structure containing the result of the measurement.
+ :rtype: ReceiveRateMeasurement
+ :raises ValueError: If TG traffic profile is not supported.
+ """
+ subtype = check_subtype(self._node)
+ if subtype == NodeSubTypeTG.TREX:
+ if u"trex-astf" in self.traffic_profile:
+ self.trex_astf_stop_remote_exec(self._node)
+ elif u"trex-sl" in self.traffic_profile:
+ self.trex_stl_stop_remote_exec(self._node)
+ else:
+ raise ValueError(u"Unsupported T-Rex traffic profile!")
+
+ return self.get_measurement_result()
+
+ def trex_astf_start_remote_exec(
+ self, duration, mult, frame_size, traffic_profile, async_call=False,
+ latency=True, warmup_time=5.0, traffic_directions=2, tx_port=0,
+ rx_port=1):
+ """Execute T-Rex ASTF script on remote node over ssh to start running
+ traffic.
+
+ In sync mode, measurement results are stored internally.
+ In async mode, initial data including xstats are stored internally.
+
+ :param duration: Time expresed in seconds for how long to send traffic.
+ :param mult: Traffic rate expressed with units (pps, %)
+ :param frame_size: L2 frame size to send (without padding and IPG).
+ :param traffic_profile: Module name as a traffic profile identifier.
+ See GPL/traffic_profiles/trex for implemented modules.
+ :param async_call: If enabled then don't wait for all incoming traffic.
+ :param latency: With latency measurement.
+ :param warmup_time: Warmup time period.
+ :param traffic_directions: Traffic is bi- (2) or uni- (1) directional.
+ Default: 2
+ :param tx_port: Traffic generator transmit port for first flow.
+ Default: 0
+ :param rx_port: Traffic generator receive port for first flow.
+ Default: 1
+ :type duration: float
+ :type mult: int
+ :type frame_size: str
+ :type traffic_profile: str
+ :type async_call: bool
+ :type latency: bool
+ :type warmup_time: float
+ :type traffic_directions: int
+ :type tx_port: int
+ :type rx_port: int
+ :raises RuntimeError: In case of T-Rex driver issue.
+ """
+ self.check_mode(TrexMode.ASTF)
+ p_0, p_1 = (rx_port, tx_port) if self._ifaces_reordered \
+ else (tx_port, rx_port)
+ if not isinstance(duration, (float, int)):
+ duration = float(duration)
+ if not isinstance(warmup_time, (float, int)):
+ warmup_time = float(warmup_time)
+
+ command_line = OptionString().add(u"python3")
+ dirname = f"{Constants.REMOTE_FW_DIR}/GPL/tools/trex"
+ command_line.add(f"'{dirname}/trex_astf_profile.py'")
+ command_line.change_prefix(u"--")
+ dirname = f"{Constants.REMOTE_FW_DIR}/GPL/traffic_profiles/trex"
+ command_line.add_with_value(
+ u"profile", f"'{dirname}/{traffic_profile}.py'"
+ )
+ command_line.add_with_value(u"duration", f"{duration!r}")
+ command_line.add_with_value(u"frame_size", frame_size)
+ command_line.add_with_value(u"mult", int(mult))
+ command_line.add_with_value(u"warmup_time", f"{warmup_time!r}")
+ command_line.add_with_value(u"port_0", p_0)
+ command_line.add_with_value(u"port_1", p_1)
+ command_line.add_with_value(u"traffic_directions", traffic_directions)
+ command_line.add_if(u"async_start", async_call)
+ command_line.add_if(u"latency", latency)
+ command_line.add_if(u"force", Constants.TREX_SEND_FORCE)
+
+ stdout, _ = exec_cmd_no_error(
+ self._node, command_line,
+ timeout=int(duration) + 600 if u"tcp" in self.traffic_profile
+ else 60,
+ message=u"T-Rex ASTF runtime error!"
+ )
+
+ self.traffic_directions = traffic_directions
+ if async_call:
+ # no result
+ self._start_time = time.time()
+ self._rate = float(mult)
+ self._received = None
+ self._sent = None
+ self._loss = None
+ self._latency = None
+ xstats = [None, None]
+ self._l7_data[u"client"] = dict()
+ self._l7_data[u"client"][u"active_flows"] = None
+ self._l7_data[u"client"][u"established_flows"] = None
+ self._l7_data[u"server"] = dict()
+ self._l7_data[u"server"][u"active_flows"] = None
+ self._l7_data[u"server"][u"established_flows"] = None
+ if u"udp" in self.traffic_profile:
+ self._l7_data[u"client"][u"udp"] = dict()
+ self._l7_data[u"client"][u"udp"][u"established_flows"] = None
+ self._l7_data[u"client"][u"udp"][u"closed_flows"] = None
+ self._l7_data[u"server"][u"udp"] = dict()
+ self._l7_data[u"server"][u"udp"][u"accepted_flows"] = None
+ self._l7_data[u"server"][u"udp"][u"closed_flows"] = None
+ elif u"tcp" in self.traffic_profile:
+ self._l7_data[u"client"][u"tcp"] = dict()
+ self._l7_data[u"client"][u"tcp"][u"initiated_flows"] = None
+ self._l7_data[u"client"][u"tcp"][u"established_flows"] = None
+ self._l7_data[u"client"][u"tcp"][u"closed_flows"] = None
+ self._l7_data[u"server"][u"tcp"] = dict()
+ self._l7_data[u"server"][u"tcp"][u"accepted_flows"] = None
+ self._l7_data[u"server"][u"tcp"][u"established_flows"] = None
+ self._l7_data[u"server"][u"tcp"][u"closed_flows"] = None
+ else:
+ logger.warn(u"Unsupported T-Rex ASTF traffic profile!")
+ index = 0
+ for line in stdout.splitlines():
+ if f"Xstats snapshot {index}: " in line:
+ xstats[index] = line[19:]
+ index += 1
+ if index == 2:
+ break
+ self._xstats = tuple(xstats)
+ else:
+ self._parse_traffic_results(stdout)
+ self._start_time = None
+ self._rate = None
+
def trex_stl_start_remote_exec(
self, duration, rate, frame_size, traffic_profile, async_call=False,
latency=True, warmup_time=5.0, traffic_directions=2, tx_port=0,
rx_port=1):
- """Execute script on remote node over ssh to start traffic.
+ """Execute T-Rex STL script on remote node over ssh to start running
+ traffic.
In sync mode, measurement results are stored internally.
In async mode, initial data including xstats are stored internally.
- :param duration: Time expresed in seconds for how long to send traffic.
+ :param duration: Time expressed in seconds for how long to send traffic.
:param rate: Traffic rate expressed with units (pps, %)
:param frame_size: L2 frame size to send (without padding and IPG).
:param traffic_profile: Module name as a traffic profile identifier.
See GPL/traffic_profiles/trex for implemented modules.
- :param async_call: If enabled then don't wait for all incomming trafic.
+ :param async_call: If enabled then don't wait for all incoming traffic.
:param latency: With latency measurement.
:param warmup_time: Warmup time period.
:param traffic_directions: Traffic is bi- (2) or uni- (1) directional.
:type traffic_directions: int
:type tx_port: int
:type rx_port: int
- :raises RuntimeError: In case of TG driver issue.
+ :raises RuntimeError: In case of T-Rex driver issue.
"""
- # No need to check subtype, we know it is TREX.
- reorder = self._ifaces_reordered # Just to make the next line fit.
- p_0, p_1 = (rx_port, tx_port) if reorder else (tx_port, rx_port)
+ self.check_mode(TrexMode.STL)
+ p_0, p_1 = (rx_port, tx_port) if self._ifaces_reordered \
+ else (tx_port, rx_port)
if not isinstance(duration, (float, int)):
duration = float(duration)
if not isinstance(warmup_time, (float, int)):
command_line = OptionString().add(u"python3")
dirname = f"{Constants.REMOTE_FW_DIR}/GPL/tools/trex"
- command_line.add(f"'{dirname}/trex_stateless_profile.py'")
+ command_line.add(f"'{dirname}/trex_stl_profile.py'")
command_line.change_prefix(u"--")
dirname = f"{Constants.REMOTE_FW_DIR}/GPL/traffic_profiles/trex"
- quoted_path = f"'{dirname}/{traffic_profile}.py'"
- command_line.add_with_value(u"profile", quoted_path)
+ command_line.add_with_value(
+ u"profile", f"'{dirname}/{traffic_profile}.py'"
+ )
command_line.add_with_value(u"duration", f"{duration!r}")
command_line.add_with_value(u"frame_size", frame_size)
command_line.add_with_value(u"rate", f"{rate!r}")
command_line.add_if(u"force", Constants.TREX_SEND_FORCE)
stdout, _ = exec_cmd_no_error(
- self._node, command_line, timeout=float(duration) + 60,
- message=u"TRex stateless runtime error"
+ self._node, command_line, timeout=int(duration) + 60,
+ message=u"T-Rex STL runtime error"
)
self.traffic_directions = traffic_directions
self._sent = None
self._loss = None
self._latency = None
+
xstats = [None, None]
index = 0
for line in stdout.splitlines():
self._start_time = None
self._rate = None
- def stop_traffic_on_tg(self):
- """Stop all traffic on TG.
-
- :returns: Structure containing the result of the measurement.
- :rtype: ReceiveRateMeasurement
- :raises RuntimeError: If TG is not set.
- """
- subtype = check_subtype(self._node)
- if subtype == NodeSubTypeTG.TREX:
- self.trex_stl_stop_remote_exec(self._node)
- return self.get_measurement_result()
-
def send_traffic_on_tg(
self, duration, rate, frame_size, traffic_profile, warmup_time=5,
async_call=False, latency=True, traffic_directions=2, tx_port=0,
This method handles that, so argument values are invariant,
but you can see swapped valued in debug logs.
- TODO: Is it better to have less descriptive argument names
- just to make them less probable to be viewed as misleading or confusing?
- See https://gerrit.fd.io/r/#/c/17625/11/resources/libraries/python\
- /TrafficGenerator.py@406
-
:param duration: Duration of test traffic generation in seconds.
- :param rate: Offered load per interface (e.g. 1%, 3gbps, 4mpps, ...).
+ :param rate: Traffic rate.
+ - T-Rex stateless mode => Offered load per interface in pps,
+ - T-Rex advanced stateful mode => multiplier of profile CPS.
:param frame_size: Frame size (L2) in Bytes.
:param traffic_profile: Module name as a traffic profile identifier.
See GPL/traffic_profiles/trex for implemented modules.
Default: 0
:param rx_port: Traffic generator receive port for first flow.
Default: 1
- :type duration: str
- :type rate: str
+ :type duration: float
+ :type rate: float
:type frame_size: str
:type traffic_profile: str
:type warmup_time: float
:type traffic_directions: int
:type tx_port: int
:type rx_port: int
- :returns: TG output.
+ :returns: TG results.
:rtype: str
- :raises RuntimeError: If TG is not set, or if node is not TG,
- or if subtype is not specified.
- :raises NotImplementedError: If TG is not supported.
+ :raises ValueError: If TG traffic profile is not supported.
"""
subtype = check_subtype(self._node)
if subtype == NodeSubTypeTG.TREX:
- self.trex_stl_start_remote_exec(
- duration, rate, frame_size, traffic_profile, async_call,
- latency, warmup_time, traffic_directions, tx_port, rx_port
- )
+ self.set_rate_provider_defaults(
+ frame_size, traffic_profile,
+ traffic_directions=traffic_directions)
+ if u"trex-astf" in self.traffic_profile:
+ self.trex_astf_start_remote_exec(
+ duration, int(rate), frame_size, traffic_profile,
+ async_call, latency, warmup_time, traffic_directions,
+ tx_port, rx_port
+ )
+ # TODO: rename all t-rex stateless profiles to use 'trex-stl'
+ elif u"trex-sl" in self.traffic_profile:
+ unit_rate_str = str(rate) + u"pps"
+ self.trex_stl_start_remote_exec(
+ duration, unit_rate_str, frame_size, traffic_profile,
+ async_call, latency, warmup_time, traffic_directions,
+ tx_port, rx_port
+ )
+ else:
+ raise ValueError(u"Unsupported T-Rex traffic profile!")
return self._result
duration, transmit_rate, transmit_count, loss_count
)
measurement.latency = self.get_latency_int()
- measurement.approximated_rate = self.get_approximated_rate()
return measurement
def measure(self, duration, transmit_rate):
Aggregate means sum over traffic directions.
:param duration: Trial duration [s].
- :param transmit_rate: Target aggregate transmit rate [pps].
+ :param transmit_rate: Target aggregate transmit rate [pps] / Connections
+ per second (CPS) for UDP/TCP flows.
:type duration: float
:type transmit_rate: float
:returns: Structure containing the result of the measurement.
:rtype: ReceiveRateMeasurement
- :raises RuntimeError: If TG is not set, or if node is not TG,
+ :raises RuntimeError: If TG is not set or if node is not TG
or if subtype is not specified.
:raises NotImplementedError: If TG is not supported.
"""
duration = float(duration)
- transmit_rate = float(transmit_rate)
# TG needs target Tr per stream, but reports aggregate Tx and Dx.
unit_rate_int = transmit_rate / float(self.traffic_directions)
- unit_rate_str = str(unit_rate_int) + u"pps"
self.send_traffic_on_tg(
- duration, unit_rate_str, self.frame_size, self.traffic_profile,
+ duration, unit_rate_int, self.frame_size, self.traffic_profile,
warmup_time=self.warmup_time, latency=True,
traffic_directions=self.traffic_directions
)
Code Review / csit.git / blobdiff