X-Git-Url: https://gerrit.fd.io/r/gitweb?p=csit.git;a=blobdiff_plain;f=GPL%2Ftools%2Ftrex%2Ftrex_stl_profile.py;h=abf79cdf140136f1af2092d2379a1973e0c8f1a0;hp=98fc4b355376bad6d05fe3ff94379411b958ca6e;hb=040beb95cc90202ef57de83ce5346e1c55569b4f;hpb=a5eed81d7d04e0d23186781a79031f392b432ce8 diff --git a/GPL/tools/trex/trex_stl_profile.py b/GPL/tools/trex/trex_stl_profile.py index 98fc4b3553..abf79cdf14 100644 --- a/GPL/tools/trex/trex_stl_profile.py +++ b/GPL/tools/trex/trex_stl_profile.py @@ -1,6 +1,6 @@ #!/usr/bin/python3 -# Copyright (c) 2020 Cisco and/or its affiliates. +# Copyright (c) 2022 Cisco and/or its affiliates. # # SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later # @@ -14,7 +14,8 @@ # # 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. +# 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, @@ -33,9 +34,9 @@ import sys import time sys.path.insert( - 0, u"/opt/trex-core-2.82/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): @@ -79,6 +80,7 @@ def simple_burst( async_start=False, traffic_directions=2, force=False, + delay=0.0, ): """Send traffic and measure packet loss and latency. @@ -107,6 +109,7 @@ def simple_burst( :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 @@ -117,6 +120,7 @@ def simple_burst( :type async_start: bool :type traffic_directions: int :type force: bool + :type delay: float """ client = None total_rcvd = 0 @@ -151,7 +155,7 @@ def simple_burst( 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: @@ -174,9 +178,8 @@ def simple_burst( # 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) + # 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() @@ -185,7 +188,7 @@ def simple_burst( # Choose rate and start traffic: client.start( - ports=ports, + ports=ports[:traffic_directions], mult=rate, duration=duration, force=force, @@ -196,29 +199,29 @@ def simple_burst( # 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: @@ -226,22 +229,18 @@ def simple_burst( 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"] + 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) @@ -313,6 +312,10 @@ def main(): 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() @@ -332,6 +335,7 @@ def main(): async_start=args.async_start, traffic_directions=args.traffic_directions, force=args.force, + delay=args.delay, )