Add SetMetadata action

features/open_flow13/set_metadata.feature

@@ -0,0 +1,14 @@
+@open_flow13
+Feature: Pio::SetMetadata
+
+  Scenario: new(0x123)
+    When I try to create an OpenFlow action with:
+      """
+      Pio::SetMetadata.new(0x123)
+      """
+    Then it should finish successfully
+    And the action has the following fields and values:
+      | field           | value |
+      | action_type     |    25 |
+      | action_length   |    16 |
+      | metadata.to_hex | 0x123 |

lib/pio/open_flow.rb

@@ -20,7 +20,7 @@ def self.switch_version(version)
        :SetSourceMacAddress, :SetDestinationMacAddress, :PortStatus, :Stats,
        :FlowStats, :DescriptionStats, :AggregateStats, :TableStats, :PortStats,
        :QueueStats, :Error, :SetArpOperation, :SetArpSenderProtocolAddress,
-       :SetArpSenderHardwareAddress, :NiciraRegMove,
+       :SetArpSenderHardwareAddress, :NiciraRegMove, :SetMetadata,
        :NiciraRegLoad].each do |each|
         set_message_class_name each, version
         @version = version.to_s

lib/pio/open_flow13.rb

@@ -22,6 +22,7 @@
 require 'pio/open_flow13/set_arp_sender_hardware_address'
 require 'pio/open_flow13/set_arp_sender_protocol_address'
 require 'pio/open_flow13/set_destination_mac_address'
+require 'pio/open_flow13/set_metadata'
 require 'pio/open_flow13/set_source_mac_address'
 
 # Instructions

lib/pio/open_flow13/set_metadata.rb

@@ -0,0 +1,21 @@
+require 'pio/open_flow/action'
+require 'pio/open_flow13/match'
+
+module Pio
+  module OpenFlow13
+    # Set metadata
+    class SetMetadata < OpenFlow::Action
+      action_header action_type: 25, action_length: 16
+
+      uint16 :oxm_class, value: Match::OpenFlowBasicValue::OXM_CLASS
+      bit7 :oxm_field, value: Match::ArpOperation::OXM_FIELD
+      bit1 :oxm_hasmask, value: 0
+      uint8 :oxm_length, value: 8
+      uint64 :metadata
+
+      def initialize(metadata)
+        super metadata: metadata
+      end
+    end
+  end
+end