class CDPMsgProtoHello(CDPMsgGeneric):
name = "Protocol Hello"
type = 0x0008
fields_desc = [XShortEnumField("type", 0x0008, _cdp_tlv_types),
ShortField("len", 32),
OUIField("oui", 0x00000c),
XShortField("protocol_id", 0x0),
# TLV length (len) - 2 (type) - 2 (len) - 3 (OUI) - 2
# (Protocol ID)
StrLenField("data", "", length_from=lambda p: p.len - 9)]
class PPP_ECP_Option_OUI(PPP_ECP_Option):
fields_desc = [
ByteEnumField("type", 0, _PPP_ecpopttypes),
FieldLenField("len",
None,
length_of="data",
fmt="B",
adjust=lambda _, val: val + 6),
OUIField("oui", 0),
ByteField("subtype", 0),
StrLenField("data", "", length_from=lambda pkt: pkt.len - 6),
]
class SNAP(Packet):
name = "SNAP"
fields_desc = [
OUIField("OUI", 0x000000),
XShortEnumField("code", 0x000, ETHER_TYPES)
]