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Multi-platform nightly builds of open source digital design and verification tools
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cocotb error: Failed to import module test_eth_axis_rx: can't use AF_INET6, IPv6 is disabled #78

Open cyberchrime opened 11 months ago

cyberchrime commented 11 months ago

When trying to simulate https://github.com/alexforencich/verilog-ethernet/tree/master/tb/eth_axis_rx from the verilog-ethernet project with cocotb, cocotb and scapy complain about IPv6 support being disabled in Python.

rm -f results.xml
make -f Makefile results.xml
make[1]: Entering directory '/home/user/verilog-ethernet/tb/eth_axis_rx'
rm -f results.xml
MODULE=test_eth_axis_rx TESTCASE= TOPLEVEL=eth_axis_rx TOPLEVEL_LANG=verilog \
         /opt/oss-cad-suite/bin/vvp -M /opt/oss-cad-suite/lib/python3.8/site-packages/cocotb-1.9.0.dev0-py3.8-linux-x86_64.egg/cocotb/libs -m libcocotbvpi_icarus   sim_build/sim.vvp -fst -fst
     -.--ns INFO     gpi                                ..mbed/gpi_embed.cpp:105  in set_program_name_in_venv        Using Python virtual environment interpreter at OSS CAD Suite/bin/python
     -.--ns INFO     gpi                                ../gpi/GpiCommon.cpp:101  in gpi_print_registered_impl       VPI registered
     0.00ns INFO     cocotb                             Running on Icarus Verilog version 13.0 (devel)
     0.00ns INFO     cocotb                             Running tests with cocotb v1.9.0.dev0 from /opt/oss-cad-suite/lib/python3.8/site-packages/cocotb-1.9.0.dev0-py3.8-linux-x86_64.egg/cocotb
     0.00ns INFO     cocotb                             Seeding Python random module with 1691062797
--- Logging error ---
Traceback (most recent call last):
  File "/opt/oss-cad-suite/lib/python3.8/logging/__init__.py", line 1081, in emit
    msg = self.format(record)
  File "/opt/oss-cad-suite/lib/python3.8/logging/__init__.py", line 925, in format
    return fmt.format(record)
  File "/home/user/.local/lib/python3.8/site-packages/scapy/error.py", line 93, in format
    from scapy.config import conf
ImportError: cannot import name 'conf' from partially initialized module 'scapy.config' (most likely due to a circular import) (/home/user/.local/lib/python3.8/site-packages/scapy/config.py)
Call stack:
  File "/opt/oss-cad-suite/lib/python3.8/site-packages/cocotb-1.9.0.dev0-py3.8-linux-x86_64.egg/cocotb/__init__.py", line 232, in _initialise_testbench
    _initialise_testbench_(argv_)
  File "/opt/oss-cad-suite/lib/python3.8/site-packages/cocotb-1.9.0.dev0-py3.8-linux-x86_64.egg/cocotb/__init__.py", line 315, in _initialise_testbench_
    regression_manager = RegressionManager.from_discovery(top)
  File "/opt/oss-cad-suite/lib/python3.8/site-packages/cocotb-1.9.0.dev0-py3.8-linux-x86_64.egg/cocotb/regression.py", line 174, in from_discovery
    return cls(dut, tests)
  File "/opt/oss-cad-suite/lib/python3.8/site-packages/cocotb-1.9.0.dev0-py3.8-linux-x86_64.egg/cocotb/regression.py", line 153, in __init__
    for test in tests:
  File "/opt/oss-cad-suite/lib/python3.8/site-packages/cocotb-1.9.0.dev0-py3.8-linux-x86_64.egg/cocotb/regression.py", line 203, in _discover_tests
    module = _my_import(module_name)
  File "/opt/oss-cad-suite/lib/python3.8/site-packages/cocotb-1.9.0.dev0-py3.8-linux-x86_64.egg/cocotb/regression.py", line 72, in _my_import
    mod = __import__(name)
  File "<frozen importlib._bootstrap>", line 991, in _find_and_load
  File "<frozen importlib._bootstrap>", line 975, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 671, in _load_unlocked
  File "/opt/oss-cad-suite/lib/python3.8/site-packages/_pytest/assertion/rewrite.py", line 178, in exec_module
    exec(co, module.__dict__)
  File "/home/user/verilog-ethernet/tb/eth_axis_rx/test_eth_axis_rx.py", line 30, in <module>
    from scapy.layers.l2 import Ether
  File "<frozen importlib._bootstrap>", line 991, in _find_and_load
  File "<frozen importlib._bootstrap>", line 975, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 671, in _load_unlocked
  File "/opt/oss-cad-suite/lib/python3.8/site-packages/_pytest/assertion/rewrite.py", line 178, in exec_module
    exec(co, module.__dict__)
  File "/home/user/.local/lib/python3.8/site-packages/scapy/layers/l2.py", line 16, in <module>
    from scapy.ansmachine import AnsweringMachine
  File "<frozen importlib._bootstrap>", line 991, in _find_and_load
  File "<frozen importlib._bootstrap>", line 975, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 671, in _load_unlocked
  File "/opt/oss-cad-suite/lib/python3.8/site-packages/_pytest/assertion/rewrite.py", line 178, in exec_module
    exec(co, module.__dict__)
  File "/home/user/.local/lib/python3.8/site-packages/scapy/ansmachine.py", line 18, in <module>
    from scapy.arch import get_if_addr
  File "<frozen importlib._bootstrap>", line 991, in _find_and_load
  File "<frozen importlib._bootstrap>", line 975, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 671, in _load_unlocked
  File "/opt/oss-cad-suite/lib/python3.8/site-packages/_pytest/assertion/rewrite.py", line 178, in exec_module
    exec(co, module.__dict__)
  File "/home/user/.local/lib/python3.8/site-packages/scapy/arch/__init__.py", line 14, in <module>
    from scapy.config import conf, _set_conf_sockets
  File "<frozen importlib._bootstrap>", line 991, in _find_and_load
  File "<frozen importlib._bootstrap>", line 975, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 671, in _load_unlocked
  File "/opt/oss-cad-suite/lib/python3.8/site-packages/_pytest/assertion/rewrite.py", line 178, in exec_module
    exec(co, module.__dict__)
  File "/home/user/.local/lib/python3.8/site-packages/scapy/config.py", line 934, in <module>
    log_scapy.warning("IPv6 support disabled in Python. Cannot load Scapy IPv6 layers.")  # noqa: E501
Message: 'IPv6 support disabled in Python. Cannot load Scapy IPv6 layers.'
Arguments: ()
     0.00ns WARNING  scapy                              IPv6 support disabled in Python. Cannot load Scapy IPv6 layers.
     0.00ns CRITICAL cocotb.regression                  Failed to import module test_eth_axis_rx: can't use AF_INET6, IPv6 is disabled
     0.00ns INFO     cocotb.regression                  MODULE variable was "test_eth_axis_rx"
     0.00ns INFO     cocotb.regression                  Traceback: 
     0.00ns INFO     cocotb.regression                  Traceback (most recent call last):
                                                          File "/opt/oss-cad-suite/lib/python3.8/site-packages/cocotb-1.9.0.dev0-py3.8-linux-x86_64.egg/cocotb/regression.py", line 203, in _discover_tests
                                                            module = _my_import(module_name)
                                                          File "/opt/oss-cad-suite/lib/python3.8/site-packages/cocotb-1.9.0.dev0-py3.8-linux-x86_64.egg/cocotb/regression.py", line 72, in _my_import
                                                            mod = __import__(name)
                                                          File "<frozen importlib._bootstrap>", line 991, in _find_and_load
                                                          File "<frozen importlib._bootstrap>", line 975, in _find_and_load_unlocked
                                                          File "<frozen importlib._bootstrap>", line 671, in _load_unlocked
                                                          File "/opt/oss-cad-suite/lib/python3.8/site-packages/_pytest/assertion/rewrite.py", line 178, in exec_module
                                                            exec(co, module.__dict__)
                                                          File "/home/user/verilog-ethernet/tb/eth_axis_rx/test_eth_axis_rx.py", line 30, in <module>
                                                            from scapy.layers.l2 import Ether
                                                          File "<frozen importlib._bootstrap>", line 991, in _find_and_load
                                                          File "<frozen importlib._bootstrap>", line 975, in _find_and_load_unlocked
                                                          File "<frozen importlib._bootstrap>", line 671, in _load_unlocked
                                                          File "/opt/oss-cad-suite/lib/python3.8/site-packages/_pytest/assertion/rewrite.py", line 178, in exec_module
                                                            exec(co, module.__dict__)
                                                          File "/home/user/.local/lib/python3.8/site-packages/scapy/layers/l2.py", line 16, in <module>
                                                            from scapy.ansmachine import AnsweringMachine
                                                          File "<frozen importlib._bootstrap>", line 991, in _find_and_load
                                                          File "<frozen importlib._bootstrap>", line 975, in _find_and_load_unlocked
                                                          File "<frozen importlib._bootstrap>", line 671, in _load_unlocked
                                                          File "/opt/oss-cad-suite/lib/python3.8/site-packages/_pytest/assertion/rewrite.py", line 178, in exec_module
                                                            exec(co, module.__dict__)
                                                          File "/home/user/.local/lib/python3.8/site-packages/scapy/ansmachine.py", line 18, in <module>
                                                            from scapy.arch import get_if_addr
                                                          File "<frozen importlib._bootstrap>", line 991, in _find_and_load
                                                          File "<frozen importlib._bootstrap>", line 975, in _find_and_load_unlocked
                                                          File "<frozen importlib._bootstrap>", line 671, in _load_unlocked
                                                          File "/opt/oss-cad-suite/lib/python3.8/site-packages/_pytest/assertion/rewrite.py", line 178, in exec_module
                                                            exec(co, module.__dict__)
                                                          File "/home/user/.local/lib/python3.8/site-packages/scapy/arch/__init__.py", line 151, in <module>
                                                            _set_conf_sockets()  # Apply config
                                                          File "/home/user/.local/lib/python3.8/site-packages/scapy/config.py", line 645, in _set_conf_sockets
                                                            conf.ifaces.reload()
                                                          File "/home/user/.local/lib/python3.8/site-packages/scapy/interfaces.py", line 237, in reload
                                                            self._reload_provs()
                                                          File "/home/user/.local/lib/python3.8/site-packages/scapy/interfaces.py", line 233, in _reload_provs
                                                            self._load(prov.reload(), prov)
                                                          File "/home/user/.local/lib/python3.8/site-packages/scapy/interfaces.py", line 52, in reload
                                                            return self.load()
                                                          File "/home/user/.local/lib/python3.8/site-packages/scapy/arch/linux.py", line 413, in load
                                                            ips = in6_getifaddr()
                                                          File "/home/user/.local/lib/python3.8/site-packages/scapy/arch/linux.py", line 331, in in6_getifaddr
                                                            addr = scapy.utils6.in6_ptop(
                                                          File "/home/user/.local/lib/python3.8/site-packages/scapy/utils6.py", line 697, in in6_ptop
                                                            return inet_ntop(socket.AF_INET6, inet_pton(socket.AF_INET6, str))
                                                          File "/home/user/.local/lib/python3.8/site-packages/scapy/pton_ntop.py", line 93, in inet_pton
                                                            return socket.inet_pton(af, addr)
                                                        OSError: can't use AF_INET6, IPv6 is disabled

Traceback (most recent call last):
  File "/opt/oss-cad-suite/lib/python3.8/site-packages/cocotb-1.9.0.dev0-py3.8-linux-x86_64.egg/cocotb/__init__.py", line 232, in _initialise_testbench
    _initialise_testbench_(argv_)
  File "/opt/oss-cad-suite/lib/python3.8/site-packages/cocotb-1.9.0.dev0-py3.8-linux-x86_64.egg/cocotb/__init__.py", line 315, in _initialise_testbench_
    regression_manager = RegressionManager.from_discovery(top)
  File "/opt/oss-cad-suite/lib/python3.8/site-packages/cocotb-1.9.0.dev0-py3.8-linux-x86_64.egg/cocotb/regression.py", line 174, in from_discovery
    return cls(dut, tests)
  File "/opt/oss-cad-suite/lib/python3.8/site-packages/cocotb-1.9.0.dev0-py3.8-linux-x86_64.egg/cocotb/regression.py", line 153, in __init__
    for test in tests:
  File "/opt/oss-cad-suite/lib/python3.8/site-packages/cocotb-1.9.0.dev0-py3.8-linux-x86_64.egg/cocotb/regression.py", line 203, in _discover_tests
    module = _my_import(module_name)
  File "/opt/oss-cad-suite/lib/python3.8/site-packages/cocotb-1.9.0.dev0-py3.8-linux-x86_64.egg/cocotb/regression.py", line 72, in _my_import
    mod = __import__(name)
  File "<frozen importlib._bootstrap>", line 991, in _find_and_load
  File "<frozen importlib._bootstrap>", line 975, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 671, in _load_unlocked
  File "/opt/oss-cad-suite/lib/python3.8/site-packages/_pytest/assertion/rewrite.py", line 178, in exec_module
    exec(co, module.__dict__)
  File "/home/user/verilog-ethernet/tb/eth_axis_rx/test_eth_axis_rx.py", line 30, in <module>
    from scapy.layers.l2 import Ether
  File "<frozen importlib._bootstrap>", line 991, in _find_and_load
  File "<frozen importlib._bootstrap>", line 975, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 671, in _load_unlocked
  File "/opt/oss-cad-suite/lib/python3.8/site-packages/_pytest/assertion/rewrite.py", line 178, in exec_module
    exec(co, module.__dict__)
  File "/home/user/.local/lib/python3.8/site-packages/scapy/layers/l2.py", line 16, in <module>
    from scapy.ansmachine import AnsweringMachine
  File "<frozen importlib._bootstrap>", line 991, in _find_and_load
  File "<frozen importlib._bootstrap>", line 975, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 671, in _load_unlocked
  File "/opt/oss-cad-suite/lib/python3.8/site-packages/_pytest/assertion/rewrite.py", line 178, in exec_module
    exec(co, module.__dict__)
  File "/home/user/.local/lib/python3.8/site-packages/scapy/ansmachine.py", line 18, in <module>
    from scapy.arch import get_if_addr
  File "<frozen importlib._bootstrap>", line 991, in _find_and_load
  File "<frozen importlib._bootstrap>", line 975, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 671, in _load_unlocked
  File "/opt/oss-cad-suite/lib/python3.8/site-packages/_pytest/assertion/rewrite.py", line 178, in exec_module
    exec(co, module.__dict__)
  File "/home/user/.local/lib/python3.8/site-packages/scapy/arch/__init__.py", line 151, in <module>
    _set_conf_sockets()  # Apply config
  File "/home/user/.local/lib/python3.8/site-packages/scapy/config.py", line 645, in _set_conf_sockets
    conf.ifaces.reload()
  File "/home/user/.local/lib/python3.8/site-packages/scapy/interfaces.py", line 237, in reload
    self._reload_provs()
  File "/home/user/.local/lib/python3.8/site-packages/scapy/interfaces.py", line 233, in _reload_provs
    self._load(prov.reload(), prov)
  File "/home/user/.local/lib/python3.8/site-packages/scapy/interfaces.py", line 52, in reload
    return self.load()
  File "/home/user/.local/lib/python3.8/site-packages/scapy/arch/linux.py", line 413, in load
    ips = in6_getifaddr()
  File "/home/user/.local/lib/python3.8/site-packages/scapy/arch/linux.py", line 331, in in6_getifaddr
    addr = scapy.utils6.in6_ptop(
  File "/home/user/.local/lib/python3.8/site-packages/scapy/utils6.py", line 697, in in6_ptop
    return inet_ntop(socket.AF_INET6, inet_pton(socket.AF_INET6, str))
  File "/home/user/.local/lib/python3.8/site-packages/scapy/pton_ntop.py", line 93, in inet_pton
    return socket.inet_pton(af, addr)
OSError: can't use AF_INET6, IPv6 is disabled
sys:1: ResourceWarning: unclosed file <_io.BufferedReader name='/proc/net/if_inet6'>
ResourceWarning: Enable tracemalloc to get the object allocation traceback
Traceback (most recent call last):
  File "/opt/oss-cad-suite/lib/python3.8/site-packages/cocotb-1.9.0.dev0-py3.8-linux-x86_64.egg/cocotb/__init__.py", line 331, in _sim_event
    scheduler.log.error(msg)
AttributeError: 'NoneType' object has no attribute 'log'
     0.00ns ERROR    gpi                                Passing event to upper layer failed
FST info: dumpfile eth_axis_rx.fst opened for output.
FST warning: sim_build/cocotb_iverilog_dump.v:3: $dumpfile called after $dumpvars started,
                                                 using existing file (eth_axis_rx.fst).
FST warning: ignoring signals in previously scanned scope eth_axis_rx.
ERROR: results.xml was not written by the simulation!
make[1]: *** [/opt/oss-cad-suite/lib/python3.8/site-packages/cocotb-1.9.0.dev0-py3.8-linux-x86_64.egg/cocotb/share/makefiles/simulators/Makefile.icarus:96: results.xml] Error 1
make[1]: Leaving directory '/home/user/verilog-ethernet/tb/eth_axis_rx'
make: *** [/opt/oss-cad-suite/lib/python3.8/site-packages/cocotb-1.9.0.dev0-py3.8-linux-x86_64.egg/cocotb/share/makefiles/Makefile.inc:40: sim] Error 2

I found this stackoverflow resource, which states that Python must be configured to have IPv6 support to resolve this issue. However, as it can be seen here, it was disabled: https://github.com/YosysHQ/oss-cad-suite-build/blob/fcb0e28dd3f018b5a735696c10ed2b1cb38e226c/default/scripts/python3.sh#L11.