Add support for other_config:vhost-postcopy-support

ovs v2.12.0 introduced the option to enable postcopy support[1]. This
adds the capability to manage the option.

[1] https://github.com/openvswitch/ovs/commit/30e834dcb5
Change-Id: Ie295a8207fdac4afb4eff37fe4eb49b3c942ea77

manifests/dpdk.pp

@@ -58,6 +58,11 @@
 #   (Optional) Enable TSO support.
 #   Defaults to false.
 #
+# [*vhost_postcopy_support*]
+#   (Optional) Allow switching live migration of VM attached to
+#   dpdkvhostuserclient port to post-copy mode.
+#   Defaults to false
+#
 # [*pmd_auto_lb*]
 #   (Optional) Configures PMD Auto Load Balancing
 #   Defaults to false.
@@ -98,6 +103,7 @@ class vswitch::dpdk (
   $revalidator_cores                 = undef,
   $handler_cores                     = undef,
   $enable_tso                        = false,
+  $vhost_postcopy_support            = false,
   $pmd_auto_lb                       = false,
   $pmd_auto_lb_rebal_interval        = undef,
   $pmd_auto_lb_load_threshold        = undef,
@@ -189,7 +195,7 @@ class vswitch::dpdk (
 
   if $enable_tso {
     vs_config { 'other_config:userspace-tso-enable':
-      value => $enable_tso,
+      value => true,
       wait  => false,
     }
   } else {
@@ -199,6 +205,20 @@ class vswitch::dpdk (
     }
   }
 
+  if $vhost_postcopy_support {
+    vs_config { 'other_config:vhost-postcopy-support':
+      value   => true,
+      restart => true,
+      wait    => false
+    }
+  } else {
+    vs_config { 'other_config:vhost-postcopy-support':
+      ensure  => absent,
+      restart => true,
+      wait    => false
+    }
+  }
+
   if $pmd_auto_lb {
     vs_config { 'other_config:pmd-auto-lb':
       value => true,

releasenotes/notes/vhost-postcopy-support-268a206b8ab7bc1f.yaml

@@ -0,0 +1,5 @@
+---
+features:
+  - |
+    The ``ovs::dpdk`` class now supports the ``vhost_postcopy_support``
+    parameter, which enables/disables postcopy support.

spec/classes/vswitch_dpdk_spec.rb

@@ -62,6 +62,9 @@ describe 'vswitch::dpdk' do
         is_expected.to contain_vs_config('other_config:userspace-tso-enable').with(
           :ensure => 'absent', :wait => false,
         )
+        is_expected.to contain_vs_config('other_config:vhost-postcopy-support').with(
+          :ensure => 'absent', :restart => true, :wait => false,
+        )
         is_expected.to contain_vs_config('other_config:pmd-auto-lb').with(
           :ensure => 'absent', :wait => false,
         )
@@ -96,6 +99,7 @@ describe 'vswitch::dpdk' do
           :disable_emc                       => true,
           :vlan_limit                        => 2,
           :enable_tso                        => true,
+          :vhost_postcopy_support            => true,
           :pmd_auto_lb                       => true,
           :pmd_auto_lb_rebal_interval        => 1,
           :pmd_auto_lb_load_threshold        => 95,
@@ -133,6 +137,9 @@ describe 'vswitch::dpdk' do
         is_expected.to contain_vs_config('other_config:userspace-tso-enable').with(
           :value => true, :wait => false,
         )
+        is_expected.to contain_vs_config('other_config:vhost-postcopy-support').with(
+          :value => true, :restart => true, :wait => false,
+        )
         is_expected.to contain_vs_config('other_config:pmd-auto-lb').with(
           :value => true, :wait => false,
         )