dpdk: TSO support

This change allows users to enable TSO support[1] in ovs-dpdk datapath.

[1] https://docs.openvswitch.org/en/latest/topics/userspace-tso/

Change-Id: Ib88dbcfc78e703a4249b942938c0f985f826b5b4

manifests/dpdk.pp

@@ -54,6 +54,10 @@
 # [*handler_cores*]
 #   (Optional) Number of cores to be used for OVS handler threads.
 #
+# [*enable_tso*]
+#   (Optional) Enable TSO support.
+#   Defaults to false.
+#
 # [*vs_config*]
 #   (optional) allow configuration of arbitary vsiwtch configurations.
 #   The value is an hash of vs_config resources. Example:
@@ -73,6 +77,7 @@ class vswitch::dpdk (
   $vlan_limit            = undef,
   $revalidator_cores     = undef,
   $handler_cores         = undef,
+  $enable_tso            = false,
   $vs_config             = {},
 ) {
 
@@ -160,6 +165,18 @@ class vswitch::dpdk (
     }
   }
 
+  if $enable_tso {
+    vs_config { 'other_config:userspace-tso-enable':
+      value => $enable_tso,
+      wait  => false,
+    }
+  } else {
+    vs_config { 'other_config:userspace-tso-enable':
+      ensure => absent,
+      wait   => false,
+    }
+  }
+
   vs_config { 'other_config:dpdk-init':
     value => true,
     wait  => true,

releasenotes/notes/dpdk-tso-40b62581f87ed122.yaml

@@ -0,0 +1,4 @@
+---
+features:
+  - |
+    The new ``vswitch::dpdk::enable_tso`` parameter has been added.

spec/classes/vswitch_dpdk_spec.rb

@@ -59,6 +59,9 @@ describe 'vswitch::dpdk' do
         is_expected.to contain_vs_config('other_config:vlan-limit').with(
           :value => nil, :wait => true,
         )
+        is_expected.to contain_vs_config('other_config:userspace-tso-enable').with(
+          :ensure => 'absent', :wait => false,
+        )
       end
       it 'restarts the service when needed' do
         is_expected.to contain_exec('restart openvswitch').with(
@@ -79,6 +82,7 @@ describe 'vswitch::dpdk' do
         params.merge!(:enable_hw_offload => true)
         params.merge!(:disable_emc => true)
         params.merge!(:vlan_limit => 2)
+        params.merge!(:enable_tso => true)
       end
       it 'configures dpdk options' do
         is_expected.to contain_vs_config('other_config:dpdk-init').with(
@@ -108,6 +112,9 @@ describe 'vswitch::dpdk' do
         is_expected.to contain_vs_config('other_config:vlan-limit').with(
           :value  => 2, :wait => true,
         )
+        is_expected.to contain_vs_config('other_config:userspace-tso-enable').with(
+          :value => true, :wait => false,
+        )
       end
     end