Contents

require 'bindata'
require 'pio/ethernet_header'
require 'pio/ipv4_header'
require 'pio/open_flow'
require 'pio/parse_error'
require 'pio/parser'

# Base module.
module Pio
  # OpenFlow 1.0 Packet-In message
  class PacketIn
    # Why is this packet being sent to the controller?
    # (enum ofp_packet_in_reason)
    class Reason < BinData::Primitive
      REASONS = { no_match: 0, action: 1 }

      uint8 :reason

      def get
        REASONS.invert.fetch(reason)
      end

      def set(value)
        self.reason = REASONS.fetch(value)
      end
    end

    # Message body of Packet-In.
    class Body < BinData::Record
      endian :big

      uint32 :buffer_id
      uint16 :total_len, value: -> { raw_data.length }
      uint16 :in_port
      reason :reason
      uint8 :padding
      hide :padding
      string :raw_data, read_length: :total_len

      def empty?
        false
      end

      def length
        10 + raw_data.length
      end
    end
  end

  OpenFlow::Message.factory(PacketIn, OpenFlow::PACKET_IN) do
    def_delegators :body, :buffer_id
    def_delegators :body, :total_len
    def_delegators :body, :in_port
    def_delegators :body, :reason
    def_delegators :body, :raw_data

    attr_accessor :datapath_id
    alias_method :dpid, :datapath_id
    alias_method :dpid=, :datapath_id=

    def data
      @data ||= Pio::Parser.read(raw_data)
    end

    def lldp?
      data.is_a? Lldp
    end

    def method_missing(method, *args)
      data.__send__(method, *args).snapshot
    end
  end
end

Version data entries

3 entries across 3 versions & 1 rubygems

Version	Path
pio-0.23.1	lib/pio/open_flow10/packet_in.rb
pio-0.23.0	lib/pio/open_flow10/packet_in.rb
pio-0.22.0	lib/pio/open_flow10/packet_in.rb