def convert_to_scmp_error(self, addr, class_, type_, pkt, *args,
hopbyhop=False, **kwargs):
self.addrs.src = addr
if self.ext_hdrs:
if self.ext_hdrs[0].EXT_TYPE == ExtHopByHopType.SCMP:
# Remove any existing SCMP ext header
del self.ext_hdrs[0]
# Insert SCMP ext at start of headers
self.ext_hdrs.insert(0, SCMPExt.from_values(hopbyhop=hopbyhop))
# Trim any extra headers, in the case of SCMPTooManyHopByHop, max+1 as
# the SCMP ext header isn't counted.
self.ext_hdrs = self.ext_hdrs[:MAX_HOPBYHOP_EXT + 1]
# Create SCMP payload.
pld = SCMPPayload.from_pkt(class_, type_, pkt, *args, **kwargs)
self.l4_hdr = SCMPHeader.from_values(self.addrs.src, self.addrs.dst,
class_, type_)
self.set_payload(pld)
def _create_extensions(self):
return [SCMPExt.from_values(False, False)]
def _create_extensions(self):
exts = []
exts.append(TracerouteExt.from_values(5))
exts.append(SCMPExt.from_values(error=False))
return exts
def _create_extensions(self):
return [SCMPExt.from_values(True, True)]
def _create_extensions(self):
exts = []
exts.append(OneHopPathExt.from_values())
exts.append(SCMPExt.from_values(error=False))
return exts