def simple_burst(profile_file, duration, framesize, rate, warmup_time, port_0,
- port_1, latency, async_start=False):
- """Send the traffic and measure packet loss and latency.
+ port_1, latency, async_start=False, unidirection=False):
+ """Send traffic and measure packet loss and latency.
Procedure:
- reads the given traffic profile with streams,
:param port_1: Port 1 on the traffic generator.
:param latency: With latency stats.
:param async_start: Start the traffic and exit.
+ :param unidirection: Traffic is unidirectional.
:type profile_file: str
:type framesize: int or str
:type duration: float
:type warmup_time: float
:type port_0: int
:type port_1: int
- :type latency: boo;
+ :type latency: bool
+ :type async_start: bool
+ :type unidirection: bool
+ """
+
+ #unidirection traffic
+ if unidirection:
+ send_traffic_unidirection(profile_file, duration, framesize, rate,
+ warmup_time, port_0, port_1, latency,
+ async_start)
+ #bidirection traffic
+ else:
+ send_traffic_bidirection(profile_file, duration, framesize, rate,
+ warmup_time, port_0, port_1, latency,
+ async_start)
+
+
+def send_traffic_bidirection(profile_file, duration, framesize, rate,
+ warmup_time, port_0, port_1, latency,
+ async_start=False):
+ """Send traffic bidirection 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
"""
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))
+
+
def main():
"""Main function for the traffic generator using T-rex.
parser.add_argument("--latency",
action="store_true",
default=False,
- help="Add latency stream")
+ help="Add latency stream.")
+ parser.add_argument("--unidirection",
+ action="store_true",
+ default=False,
+ help="Send unidirection traffic.")
+
args = parser.parse_args()
try:
port_0=args.port_0,
port_1=args.port_1,
latency=args.latency,
- async_start=args.async)
+ async_start=args.async,
+ unidirection=args.unidirection)
if __name__ == '__main__':
Code Review / csit.git / blobdiff