Module: Pio::Type::EthernetHeader

Included in:
Arp::Format, Dhcp::Frame, Icmp::Format, Lldp::Frame, PacketIn::DataParser::EthernetHeaderParser, PacketIn::DataParser::IPv4Packet
Defined in:
lib/pio/type/ethernet_header.rb

Overview

Adds ethernet_header macro.

Instance Method Summary collapse

Instance Method Details

#ethernet_header(options = { ether_type: 0x0800 }) ⇒ Object

rubocop:disable MethodLength rubocop:disable AbcSize



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# File 'lib/pio/type/ethernet_header.rb', line 9

def ethernet_header(options = { ether_type: 0x0800 })
  class_eval do
    mac_address :destination_mac
    mac_address :source_mac
    uint16 :ether_type_internal, initial_value: options[:ether_type]

    bit3 :vlan_pcp_internal, onlyif: -> { vlan? }
    bit1 :vlan_cfi, onlyif: -> { vlan? }
    bit12 :vlan_vid_internal, onlyif: -> { vlan? }

    uint16 :ether_type_vlan, onlyif: -> { vlan? },
                             initial_value: options[:ether_type]

    def ether_type
      ether_type_internal
    end

    def vlan_vid
      vlan? ? vlan_vid_internal : 0xffff
    end

    def vlan_pcp
      vlan? ? vlan_pcp_internal : 0
    end

    def vlan?
      ether_type == 0x8100
    end
  end
end