dhcpkit_vpp.protocols.layer2 module

Classes and constants for layer 2 frames

class dhcpkit_vpp.protocols.layer2.Ethernet(destination: bytes = b'x00x00x00x00x00x00', source: bytes = b'x00x00x00x00x00x00', ethertype: int = 0, payload: dhcpkit.protocol_element.ProtocolElement = None)

Bases: dhcpkit_vpp.protocols.Layer2Frame

The class for ethernet frames.

classmethod determine_class(buffer: bytes, offset: int = 0) → type

Return the appropriate class to parse this element with.

Parameters:

• buffer – The buffer to read data from
• offset – The offset in the buffer where to start reading

Returns:

The best known class for this data

display_destination() → dhcpkit.protocol_element.ElementDataRepresentation

Nicer representation of destination :return: Representation of destination

display_ethertype() → dhcpkit.protocol_element.ElementDataRepresentation

Nicer representation of ethertype :return: Representation of ethertype

display_source() → dhcpkit.protocol_element.ElementDataRepresentation

Nicer representation of source :return: Representation of source

load_from(buffer: bytes, offset: int = 0, length: int = None) → int

Load the internal state of this object from the given buffer. The buffer may contain more data after the structured element is parsed. This data is ignored.

Parameters:

• buffer – The buffer to read data from
• offset – The offset in the buffer where to start reading
• length – The amount of data we are allowed to read from the buffer

Returns:

The number of bytes used from the buffer

save() → bytes

Save the internal state of this object as a buffer.

Returns:The buffer with the data from this element

validate()

Validate that the contents of this object conform to protocol specs.