def handle_sibra_pkt(self, pkt):
"""
Handle SIBRA packets. First determine which interface they came from,
then pass them to the appropriate Link.
"""
ext = find_ext_hdr(pkt, ExtensionClass.HOP_BY_HOP,
SibraExtSteady.EXT_TYPE)
if not ext:
logging.error("Packet contains no SIBRA extension header")
return
if not ext.steady:
logging.error("Received non-steady SIBRA packet:\n%s", pkt)
return
if not ext.req_block:
logging.error("Received non-request SIBRA packet:\n%s", pkt)
return
with self.lock:
if ext.fwd:
self._process_req(pkt, ext)
else:
self._process_reply(pkt, ext)
def get_ext(self, spkt):
return find_ext_hdr(spkt, ExtensionClass.HOP_BY_HOP,
SibraExtEphemeral.EXT_TYPE)