Add SetIpTtl action

features/open_flow13/set_ip_ttl.feature

@@ -0,0 +1,13 @@
+@open_flow13
+Feature: Pio::SetIpTtl
+
+  Scenario: new(10)
+    When I try to create an OpenFlow action with:
+      """
+      Pio::SetIpTtl.new(10)
+      """
+    Then it should finish successfully
+    And the action has the following fields and values:
+      | field       | value |
+      | action_type |    23 |
+      | ttl         |    10 |

lib/pio/open_flow.rb

@@ -23,7 +23,7 @@ def self.switch_version(version)
        :QueueStats, :Error, :SetArpOperation, :SetArpSenderProtocolAddress,
        :SetArpSenderHardwareAddress, :NiciraRegMove, :SetMetadata,
        :NiciraRegLoad, :NiciraSendOutPort, :NiciraStackPush,
-       :NiciraStackPop, :DecrementIpTtl].each do |each|
+       :NiciraStackPop, :DecrementIpTtl, :SetIpTtl].each do |each|
         set_message_class_name each, version
         @version = version.to_s
       end

lib/pio/open_flow13.rb

@@ -26,6 +26,7 @@
 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_ip_ttl'
 require 'pio/open_flow13/set_metadata'
 require 'pio/open_flow13/set_source_mac_address'
 

lib/pio/open_flow13/set_ip_ttl.rb

@@ -0,0 +1,16 @@
+require 'pio/open_flow/action'
+
+module Pio
+  module OpenFlow13
+    # Sets IP TTL
+    class SetIpTtl < OpenFlow::Action
+      action_header action_type: 23, action_length: 8
+      uint8 :ttl
+      string :padding, length: 3
+
+      def initialize(ttl)
+        super(ttl: ttl)
+      end
+    end
+  end
+end