Add NiciraRegLoad action

features/open_flow13/nicira_reg_load.feature

@@ -0,0 +1,18 @@
+@open_flow13
+Feature: Pio::NiciraRegLoad
+
+  Scenario: new(0xdeadbeef, 0, n_bits: 32)
+    When I try to create an OpenFlow action with:
+      """
+      Pio::NiciraRegLoad.new(0xdeadbeef, 0, n_bits: 32)
+      """
+    Then it should finish successfully
+    And the action has the following fields and values:
+      | field                  |      value |
+      | action_type.to_hex     |     0xffff |
+      | action_length          |         24 |
+      | experimenter_id.to_hex |     0x2320 |
+      | experimenter_type      |          7 |
+      | n_bits                 |         32 |
+      | destination            |      65540 |
+      | value.to_hex           | 0xdeadbeef |

lib/pio/open_flow.rb

@@ -21,7 +21,7 @@ def self.switch_version(version)
        :FlowStats, :DescriptionStats, :AggregateStats, :TableStats, :PortStats,
        :QueueStats, :Error, :NiciraResubmit, :SetArpOperation,
        :SetArpSenderProtocolAddress, :SetArpSenderHardwareAddress,
-       :NiciraResubmitTable, :NiciraRegMove].each do |each|
+       :NiciraResubmitTable, :NiciraRegMove, :NiciraRegLoad].each do |each|
         set_message_class_name each, version
         @version = version.to_s
       end

lib/pio/open_flow13.rb

@@ -13,6 +13,7 @@
 require 'pio/open_flow13/stats_request'
 
 # Actions
+require 'pio/open_flow13/nicira_reg_load'
 require 'pio/open_flow13/nicira_reg_move'
 require 'pio/open_flow13/send_out_port'
 require 'pio/open_flow13/set_arp_operation'

lib/pio/open_flow13/nicira_reg_load.rb

@@ -0,0 +1,30 @@
+require 'pio/open_flow/action'
+
+module Pio
+  module OpenFlow13
+    # NXAST_REG_LOAD action
+    class NiciraRegLoad < OpenFlow::Action
+      action_header action_type: 0xffff, action_length: 24
+      uint32 :experimenter_id, value: 0x2320
+      uint16 :experimenter_type, value: 7
+      bit10 :ofs
+      bit6 :n_bits_internal
+      uint32 :destination
+      uint64 :value_internal
+
+      def initialize(value, register, n_bits: 64)
+        super(value_internal: value,
+              destination: ((1 << 16) | (register << 9) | 4),
+              n_bits_internal: n_bits - 1)
+      end
+
+      def value
+        value_internal
+      end
+
+      def n_bits
+        n_bits_internal + 1
+      end
+    end
+  end
+end