Struct Link 

pub struct Link {
    pub name: String,
    pub broadcast: bool,
    pub source: Option<String>,
    pub destination: Option<String>,
    pub problem: Option<String>,
    pub malformed: bool,
    pub npdu: Option<Npdu>,
}

What the link layer says about a frame, and where its NPDU is.

Fields

name: String

The link message in kebab case: a BVLC function, an MS/TP frame type, or malformed.

broadcast: bool

A link broadcast.

source: Option<String>

The link’s source, where the frame names one.

destination: Option<String>

The link’s destination, where the frame names one.

problem: Option<String>

A NAK, or why the header doesn’t decode.

malformed: bool

Whether the link header refused to decode, so npdu is unknown rather than absent.

npdu: Option<Npdu>

The NPDU, as a range of the frame’s octets, or decoded on its own for an extended MS/TP frame, whose data is COBS-encoded on the wire.