#!/usr/bin/python3
-# Copyright (c) 2020 Cisco and/or its affiliates.
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at:
+# Copyright (c) 2022 Cisco and/or its affiliates.
+#
+# SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
+#
+# Licensed under the Apache License 2.0 or
+# GNU General Public License v2.0 or later; you may not use this file
+# except in compliance with one of these Licenses. You
+# may obtain a copy of the Licenses at:
#
# http://www.apache.org/licenses/LICENSE-2.0
+# https://www.gnu.org/licenses/old-licenses/gpl-2.0-standalone.html
+#
+# Note: If this file is linked with Scapy, which is GPLv2+, your use of it
+# must be under GPLv2+. If at any point in the future it is no longer linked
+# with Scapy (or other GPLv2+ licensed software), you are free to choose
+# Apache 2.
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
import time
sys.path.insert(
- 0, u"/opt/trex-core-2.73/scripts/automation/trex_control_plane/interactive/"
+ 0, u"/opt/trex-core-2.97/scripts/automation/trex_control_plane/interactive/"
)
-from trex.stl.api import *
+from trex.stl.api import STLClient, STLProfile, STLError
def fmt_latency(lat_min, lat_avg, lat_max, hdrh):
def simple_burst(
- profile_file, duration, framesize, rate, warmup_time, port_0, port_1,
- latency, async_start=False, traffic_directions=2, force=False):
+ profile_file,
+ duration,
+ framesize,
+ rate,
+ port_0,
+ port_1,
+ latency,
+ async_start=False,
+ traffic_directions=2,
+ force=False,
+ delay=0.0,
+ ):
"""Send traffic and measure packet loss and latency.
Procedure:
: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.
:param traffic_directions: Bidirectional (2) or unidirectional (1) traffic.
:param force: Force start regardless of ports state.
+ :param delay: Sleep overhead [s].
: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
:type traffic_directions: int
:type force: bool
+ :type delay: float
"""
client = None
total_rcvd = 0
total_sent = 0
- approximated_duration = 0
- approximated_rate = 0
+ approximated_duration = 0.0
lost_a = 0
lost_b = 0
lat_a = u"-1/-1/-1/"
if u"macsrc" in profile_file:
client.set_port_attr(ports=[port_0, port_1], promiscuous=True)
if isinstance(framesize, int):
- last_stream_a = int((len(streams) - 2 ) / 2)
+ last_stream_a = int((len(streams) - 2) / 2)
last_stream_b = (last_stream_a * 2)
client.add_streams(streams[0:last_stream_a], ports=[port_0])
if traffic_directions > 1:
# Disable latency if NIC does not support requested stream type
print(u"##### FAILED to add latency streams #####")
latency = False
- ports = [port_0]
- if traffic_directions > 1:
- ports.append(port_1)
- # Warm-up phase:
- if warmup_time > 0:
- # Clear the stats before injecting:
- client.clear_stats()
-
- # Choose rate and start traffic:
- client.start(
- ports=ports, mult=rate, duration=warmup_time, force=force
- )
-
- # Block until done:
- time_start = time.monotonic()
- client.wait_on_traffic(ports=ports, timeout=warmup_time+30)
- time_stop = time.monotonic()
- approximated_duration = time_stop - time_start
-
- if client.get_warnings():
- for warning in client.get_warnings():
- print(warning)
-
- # Read the stats after the test:
- stats = client.get_stats()
-
- print(u"##### Warmup statistics #####")
- print(json.dumps(stats, indent=4, separators=(u",", u": ")))
-
- lost_a = stats[port_0][u"opackets"] - stats[port_1][u"ipackets"]
- if traffic_directions > 1:
- lost_b = stats[port_1][u"opackets"] - stats[port_0][u"ipackets"]
-
- print(f"\npackets lost from {port_0} --> {port_1}: {lost_a} pkts")
- if traffic_directions > 1:
- print(f"packets lost from {port_1} --> {port_0}: {lost_b} pkts")
+ # Even for unidir, both ports are needed to see both rx and tx.
+ ports = [port_0, port_1]
# Clear the stats before injecting:
client.clear_stats()
lost_b = 0
# Choose rate and start traffic:
- client.start(ports=ports, mult=rate, duration=duration, force=force)
+ client.start(
+ ports=ports[:traffic_directions],
+ mult=rate,
+ duration=duration,
+ force=force,
+ core_mask=STLClient.CORE_MASK_PIN,
+ )
if async_start:
# For async stop, we need to export the current snapshot.
xsnap0 = client.ports[0].get_xstats().reference_stats
print(f"Xstats snapshot 0: {xsnap0!r}")
- if traffic_directions > 1:
- xsnap1 = client.ports[1].get_xstats().reference_stats
- print(f"Xstats snapshot 1: {xsnap1!r}")
+ xsnap1 = client.ports[1].get_xstats().reference_stats
+ print(f"Xstats snapshot 1: {xsnap1!r}")
else:
- # Block until done:
time_start = time.monotonic()
- client.wait_on_traffic(ports=ports, timeout=duration+30)
+ # wait_on_traffic fails if duration stretches by 30 seconds or more.
+ # TRex has some overhead, wait some more.
+ time.sleep(duration + delay)
+ client.stop()
time_stop = time.monotonic()
- approximated_duration = time_stop - time_start
-
+ approximated_duration = time_stop - time_start - delay
+ # Read the stats after the traffic stopped (or time up).
+ stats = client.get_stats()
if client.get_warnings():
for warning in client.get_warnings():
print(warning)
-
- # Read the stats after the test
- stats = client.get_stats()
+ # Now finish the complete reset.
+ client.reset()
print(u"##### Statistics #####")
print(json.dumps(stats, indent=4, separators=(u",", u": ")))
lost_a = stats[port_0][u"opackets"] - stats[port_1][u"ipackets"]
- if traffic_directions > 1:
- lost_b = stats[port_1][u"opackets"] - stats[port_0][u"ipackets"]
+ lost_b = stats[port_1][u"opackets"] - stats[port_0][u"ipackets"]
# Stats index is not a port number, but "pgid".
if latency:
lat_a = fmt_latency(
str(lat_obj[u"total_min"]), str(lat_obj[u"average"]),
str(lat_obj[u"total_max"]), str(lat_obj[u"hdrh"]))
+ # Do not bother with the other dir latency if unidir.
if traffic_directions > 1:
lat_obj = stats[u"latency"][1][u"latency"]
lat_b = fmt_latency(
str(lat_obj[u"total_min"]), str(lat_obj[u"average"]),
str(lat_obj[u"total_max"]), str(lat_obj[u"hdrh"]))
- if traffic_directions > 1:
- total_sent = stats[0][u"opackets"] + stats[1][u"opackets"]
- total_rcvd = stats[0][u"ipackets"] + stats[1][u"ipackets"]
- else:
- total_sent = stats[port_0][u"opackets"]
- total_rcvd = stats[port_1][u"ipackets"]
- try:
- approximated_rate = total_sent / approximated_duration
- except ZeroDivisionError:
- pass
+ total_sent = stats[0][u"opackets"] + stats[1][u"opackets"]
+ total_rcvd = stats[0][u"ipackets"] + stats[1][u"ipackets"]
print(f"\npackets lost from {port_0} --> {port_1}: {lost_a} pkts")
- if traffic_directions > 1:
- print(f"packets lost from {port_1} --> {port_0}: {lost_b} pkts")
+ print(f"packets lost from {port_1} --> {port_0}: {lost_b} pkts")
except STLError:
print(u"T-Rex STL runtime error!", file=sys.stderr)
if client:
client.disconnect()
print(
- f"rate={rate!r}, total_received={total_rcvd}, "
- f"total_sent={total_sent}, frame_loss={lost_a + lost_b}, "
- f"target_duration={duration!r}, "
- f"approximated_duration={approximated_duration!r}, "
- f"approximated_rate={approximated_rate}, "
- f"latency_stream_0(usec)={lat_a}, "
- f"latency_stream_1(usec)={lat_b}, "
+ f"rate={rate!r}; "
+ f"total_received={total_rcvd}; "
+ f"total_sent={total_sent}; "
+ f"frame_loss={lost_a + lost_b}; "
+ f"target_duration={duration!r}; "
+ f"approximated_duration={approximated_duration!r}; "
+ f"latency_stream_0(usec)={lat_a}; "
+ f"latency_stream_1(usec)={lat_b}; "
)
u"-r", u"--rate", required=True,
help=u"Traffic rate with included units (pps)."
)
- parser.add_argument(
- u"-w", u"--warmup_time", type=float, default=5.0,
- help=u"Traffic warm-up time in seconds, 0 = disable."
- )
parser.add_argument(
u"--port_0", required=True, type=int,
help=u"Port 0 on the traffic generator."
u"--force", action=u"store_true", default=False,
help=u"Force start regardless of ports state."
)
+ parser.add_argument(
+ u"--delay", required=True, type=float, default=0.0,
+ help=u"Delay assumed for traffic, sleep time is increased by this [s]."
+ )
args = parser.parse_args()
framesize = args.frame_size
simple_burst(
- profile_file=args.profile, duration=args.duration, framesize=framesize,
- rate=args.rate, warmup_time=args.warmup_time, port_0=args.port_0,
- port_1=args.port_1, latency=args.latency, async_start=args.async_start,
- traffic_directions=args.traffic_directions, force=args.force
+ profile_file=args.profile,
+ duration=args.duration,
+ framesize=framesize,
+ rate=args.rate,
+ port_0=args.port_0,
+ port_1=args.port_1,
+ latency=args.latency,
+ async_start=args.async_start,
+ traffic_directions=args.traffic_directions,
+ force=args.force,
+ delay=args.delay,
)
Code Review / csit.git / blobdiff