Flow Match Fields structure. See the section 7.2.3.2 of the OpenFlow 1.3.4 specification
val field_name : t ‑> stringval marshal_header : Cstruct.t ‑> t ‑> intmarshal_header buf t same as marshal but doesn't serialize the payload
val parse_header : Cstruct.t ‑> t * Cstruct.tparse_header bits same as parse but doesn't parse the payload
val from_of_pattern : OpenFlow.Pattern.t ‑> t list