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Ignore critical layers from filter() #4755

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Merged
gpotter2 merged 1 commit into from
May 29, 2025
Merged

Ignore critical layers from filter() #4755

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6 changes: 6 additions & 0 deletions scapy/config.py
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Original file line number Diff line number Diff line change
Expand Up @@ -294,6 +294,12 @@ def __repr__(self):
def register(self, layer):
# type: (Type[Packet]) -> None
self.append(layer)

# Skip arch* modules
if layer.__module__.startswith("scapy.arch."):
return

# Register in module
if layer.__module__ not in self.ldict:
self.ldict[layer.__module__] = []
self.ldict[layer.__module__].append(layer)
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3 changes: 3 additions & 0 deletions test/regression.uts
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Expand Up @@ -288,6 +288,9 @@ pkt = NetflowHeader()/NetflowHeaderV5()/NetflowRecordV5()
conf.layers.filter([NetflowHeader, NetflowHeaderV5])
assert NetflowRecordV5 not in NetflowHeader(bytes(pkt))

# Conf.ifaces.reload() should still work (arch/* is exempt)
conf.ifaces.reload()

conf.layers.unfilter()
assert NetflowRecordV5 in NetflowHeader(bytes(pkt))

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