[dts] [Bug 670] Exception occurs with running nic_single_core_perf with latest DTS version

[bugzilla at dpdk.org]

https://bugs.dpdk.org/show_bug.cgi?id=670

            Bug ID: 670
           Summary: Exception occurs with running nic_single_core_perf
                    with latest DTS version
           Product: DTS
           Version: unspecified
          Hardware: All
                OS: All
            Status: UNCONFIRMED
          Severity: normal
          Priority: Normal
         Component: tests
          Assignee: dts at dpdk.org
          Reporter: alialnu at nvidia.com
  Target Milestone: ---

Created attachment 154
  --> https://bugs.dpdk.org/attachment.cgi?id=154&action=edit
DTS log with scapy 2.4.4

When running the test 'nic_single_core_perf' on latest DTS version (082321a2
test_plans/vm2vm_virtio_net_perf_test_plan.rst), the following exception
occurs:

"""
  File "/path/to/venv/lib/python3.6/site-packages/scapy/packet.py", line 1600,
in getfield_and_val
    raise AttributeError(attr)
AttributeError: _offset
"""

Followed by the following exception:

"""
exception.TimeoutException: TIMEOUT on rm -rf x86_64-native-linux-gcc
"""

See full log in attached file.

The previous exceptions happen when using the scapy version defined in
requirements.txt (scapy 2.4.4).

Forcing DTS to use TRex's scapy (2.3.1) causes another exception:

"""
$ PYTHONPATH=/opt/trex-core-2.59/external_libs/scapy-2.3.1/python3 ./dts

module 'scapy.contrib.gtp' has no attribute 'GTPPDUSessionContainer'
No module named 'scapy.contrib.lldp'
No module named 'scapy.contrib.pfcp'
No module named 'scapy.contrib.nsh'
Traceback (most recent call last):
  File "./main.py", line 50, in <module>
    import dts
  File "/path/to/dts/framework/dts.py", line 47, in <module>
    from tester import Tester
  File "/path/to/dts/framework/tester.py", line 52, in <module>
    from packet import SCAPY_IMP_CMD
  File "/path/to/dts/framework/packet.py", line 129, in <module>
    class scapy(object):
  File "/path/to/dts/framework/packet.py", line 144, in scapy
    'sctp': SCTP(),
NameError: name 'SCTP' is not defined
"""

Configuration files:

"""
$ cat conf/crbs.cfg
[HOSTNAME]
dut_ip=HOSTNAME
dut_user=root
dut_passwd=
os=linux
dut_arch=
tester_ip=127.0.0.1
tester_passwd=
ixia_group=
pktgen_group=TREX
channels=4
bypass_core0=True
dut_cores=
snapshot_load_side=tester

$ cat conf/nic_single_core_perf.cfg
[suite]
update_expected = True
test_parameters = {'1C/1T': {64: [256], 512: [256]}}
rx_desc_16byte = 'y'
test_duration = 60
accepted_tolerance = 1
expected_throughput = {'ConnectX5_MT4121': {'1C/1T': {64: {256: 0.0}, 512:
{256: 0.0}}}}

$ cat conf/pktgen.cfg
[TREX]
trex_root_path=/opt/trex-core-2.59
trex_lib_path=/opt/trex-core-2.59/automation/trex_control_plane/interactive
config_file=/etc/trex_cfg.yaml
server=127.0.0.1
pcap_file=/opt/trex-core-2.59/stl/sample.pcap
core_num=14
start_trex=yes

$ cat conf/ports.cfg
[HOSTNAME]
ports =
    pci=0000:82:00.0,peer=TREX:0;
    pci=0000:82:00.1,peer=TREX:1;

$ cat execution.cfg
[Execution1]
crbs=HOSTNAME
drivername=mlx5_core
build_type=meson
test_suites=
    nic_single_core_perf,
targets=
    x86_64-native-linux-gcc
parameters=nic_type=cfg:perf=true
"""

OS: Ubuntu 18.04.2
Python: 3.6.9

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