Class MegId

scapy/contrib/oam.py:66–111

MEG ID

class MegId(Packet):
    """
    MEG ID
    """

    name = "MEG ID"

    fields_desc = [
        ByteField("resv", 1),
        ByteField("format", 0),
        MultipleTypeField(
            [
                (
                    LenField("length", 13, fmt="B"),
                    lambda p: p.format == 32,
                ),
                (
                    LenField("length", 15, fmt="B"),
                    lambda p: p.format == 33,
                )
            ],
            LenField("length", 45, fmt="B"),
        ),
        PadField(
            MultipleTypeField(
                [
                    (
                        FieldListField("values", [0] * 13,
                                       ByteField("value", 0),
                                       count_from=lambda pkt: pkt.length),
                        lambda x: x.format == 32,
                    ),
                    (
                        FieldListField("values", [0] * 15,
                                       ByteField("value", 0),
                                       count_from=lambda pkt: pkt.length),
                        lambda x: x.format == 33,
                    )
                ],
                NBytesField("values", 0, sz=45),
            ),
            45),
    ]

    def extract_padding(self, s):
        return b"", s


class OAM_TLV(Packet):