- lat_a, lat_b))
-
-
-def send_traffic_unidirection(profile_file, duration, framesize, rate,
- warmup_time, port_0, port_1, latency,
- async_start=False):
- """Send traffic unidirection and measure packet loss and latency.
-
- :param profile_file: A python module with T-rex traffic profile.
- :param framesize: Frame size.
- :param duration: Duration of traffic run in seconds (-1=infinite).
- :param rate: Traffic rate [percentage, pps, bps].
- :param warmup_time: Traffic warm-up time in seconds, 0 = disable.
- :param port_0: Port 0 on the traffic generator.
- :param port_1: Port 1 on the traffic generator.
- :param latency: With latency stats.
- :param async_start: Start the traffic and exit.
- :type profile_file: str
- :type framesize: int or str
- :type duration: float
- :type rate: str
- :type warmup_time: float
- :type port_0: int
- :type port_1: int
- :type latency: bool
- :type async_start: bool
- """
-
- client = None
- total_rcvd = 0
- total_sent = 0
- lost_a = 0
- lat_a = "-1/-1/-1"
-
- # Read the profile:
- try:
- print("### Profile file:\n{}".format(profile_file))
- profile = STLProfile.load(profile_file, direction=0, port_id=0,
- framesize=framesize)
- streams = profile.get_streams()
- except STLError as err:
- print("Error while loading profile '{0}' {1}".format(profile_file, err))
- sys.exit(1)
-
- try:
- # Create the client:
- client = STLClient(verbose_level=LoggerApi.VERBOSE_QUIET)
- # Connect to server:
- client.connect()
- # Prepare our ports:
- if port_0 == port_1:
- client.reset(ports=[port_0])
- client.remove_all_streams(ports=[port_0])
-
- if "macsrc" in profile_file:
- client.set_port_attr(ports=[port_0], promiscuous=True,
- resolve=False)
- else:
- client.reset(ports=[port_0, port_1])
- client.remove_all_streams(ports=[port_0, port_1])
-
- if "macsrc" in profile_file:
- client.set_port_attr(ports=[port_0, port_1], promiscuous=True,
- resolve=False)
-
- if isinstance(framesize, int):
- client.add_streams(streams[0], ports=[port_0])
- elif isinstance(framesize, str):
- client.add_streams(streams[0:3], ports=[port_0])
- if latency:
- try:
- if isinstance(framesize, int):
- client.add_streams(streams[2], ports=[port_0])
- elif isinstance(framesize, str):
- latency = False
- except STLError:
- # Disable latency if NIC does not support requested stream type
- print("##### FAILED to add latency streams #####")
- latency = False
-
- # Warm-up phase:
- if warmup_time > 0:
- # Clear the stats before injecting:
- client.clear_stats()
-
- # Choose rate and start traffic:
- client.start(ports=[port_0], mult=rate,
- duration=warmup_time)
-
- # Block until done:
- client.wait_on_traffic(ports=[port_0],
- timeout=warmup_time+30)
-
- if client.get_warnings():
- for warning in client.get_warnings():
- print(warning)
-
- # Read the stats after the test:
- stats = client.get_stats()
-
- print("##### Warmup statistics #####")
- print(json.dumps(stats, indent=4, separators=(',', ': '),
- sort_keys=True))
-
- lost_a = stats[port_0]["opackets"] - stats[port_1]["ipackets"]
- print("\npackets lost : {0} pkts".format(lost_a))
-
- # Clear the stats before injecting:
- client.clear_stats()
- lost_a = 0
-
- # Choose rate and start traffic:
- client.start(ports=[port_0], mult=rate, duration=duration)
-
- if not async_start:
- # Block until done:
- client.wait_on_traffic(ports=[port_0], timeout=duration+30)
-
- if client.get_warnings():
- for warning in client.get_warnings():
- print(warning)
-
- # Read the stats after the test
- stats = client.get_stats()
-
- print("##### Statistics #####")
- print(json.dumps(stats, indent=4, separators=(',', ': '),
- sort_keys=True))
-
- lost_a = stats[port_0]["opackets"] - stats[port_1]["ipackets"]
-
- if latency:
- lat_a = fmt_latency(
- str(stats["latency"][0]["latency"]["total_min"]),
- str(stats["latency"][0]["latency"]["average"]),
- str(stats["latency"][0]["latency"]["total_max"]))
-
- total_sent = stats[port_0]["opackets"]
- total_rcvd = stats[port_1]["ipackets"]
-
- print("\npackets lost : {0} pkts".format(lost_a))
-
- except STLError as err:
- sys.stderr.write("{0}\n".format(err))
- sys.exit(1)
-
- finally:
- if async_start:
- if client:
- client.disconnect(stop_traffic=False, release_ports=True)
- else:
- if client:
- client.disconnect()
- print("rate={0}, totalReceived={1}, totalSent={2}, "
- "frameLoss={3}, latencyStream0(usec)={4}".
- format(rate, total_rcvd, total_sent, lost_a, lat_a))