package frenetic

  1. Overview
  2. Docs
Legend:
Library
Module
Module type
Parameter
Class
Class type

Abstract version of group table, first introduced in OpenFlow 1.1 and widely implemented in OpenFlow 1.3. Generally there is one group table per switch.

A group table combines (1) a list of actions into a bucket - the bucket may, for example, modify some packet headers and send it out a port. (2) a set of action buckets into a group. Only one action bucket is executed, but the choice between buckets is made by "liveness" (as in a fast failover group) or round-robin.

This version of a group table is mutable - you create a group table, then add groups or clear them out with operations.

TODO: This should probably be merged with OpenFlow since it's an abstraction. Also commit should produce a OpenFlow0x04 structure directly, like to_par, to_seq, etc. in OpenFlow

type t
val to_string : t -> string

String representation of group table.

val create : unit -> t

Create a new group table

Creates a new group, allocating a fresh ID.

val clear_groups : t -> unit

Forgets all groups

val commit : t -> OpenFlow0x04.Message.t list

Produces a list of messages to realize the previous add_group and clear_groups commands, upto the last commit command.

val add_fastfail_group : t -> OpenFlow0x04.portId list -> OpenFlow0x04.groupId

Creates a new fast fail group which forwards out of the first live port in * ports and otherwise drops.

OCaml

Innovation. Community. Security.