def seterror(self, p):
"""Convenience method to set error annotation (or parameters) in `p`.
:return: Modified packet with updated parameters/annotations.
By default, if packet `p` has a `CRC32` layer, this method will set the
'crcerror' field, otherwise this method will set the 'crcerror'
annotation to 1.
**Overload this method as needed.**
"""
hascrc = CRC32.supported(p)
hasanno = ANNO.supported(p)
if hascrc:
p[CRC32].crcerror = 1
elif hasanno:
p.setanno('crcerror', 1)
else:
raise RuntimeError, "[PHY]: seterror() failed to find packet!"
