openvswitch: add option to set hw offload

Change-Id: I8bf5453c6943fd2ad8912e5d80af179296ada894

ansible/roles/openvswitch/defaults/main.yml

@@ -104,3 +104,4 @@ openvswitch_vswitchd_extra_volumes: "{{ openvswitch_extra_volumes }}"
 #############
 
 openvswitch_system_id: "{{ ansible_facts.hostname }}"
+openvswitch_hw_offload: "no"

ansible/roles/openvswitch/tasks/post-config.yml

@@ -1,6 +1,6 @@
 ---
 # NOTE(mnasiadka): external_ids:system-id uniquely identifies a physical system, used by OVN and other controllers
-- name: Set system-id
+- name: Set system-id and hw-offload
   become: true
   kolla_toolbox:
     user: root
@@ -8,10 +8,13 @@
     module_args:
       table: Open_vSwitch
       record: .
-      col: external_ids
+      col: "{{ item.col }}"
-      key: system-id
+      key: "{{ item.name }}"
-      value: "{{ openvswitch_system_id }}"
+      value: "{{ item.value }}"
-      state: present
+      state: "{{ item.state | default('present') }}"
+  loop:
+    - { col: "external_ids", name: "system-id", value: "{{ openvswitch_system_id }}" }
+    - { col: "other_config", name: "hw-offload", value: true, state: "{{ 'present' if openvswitch_hw_offload | bool else 'absent' }}" }
 
 - name: Ensuring OVS bridge is properly setup
   become: true

doc/source/reference/networking/sriov.rst

@@ -71,6 +71,13 @@ VFs enabled:
    [sriov_nic]
    exclude_devices =
 
+To use OpenvSwitch hardware offloading modify `/etc/kolla/globals.yml``:
+
+.. path /etc/kolla/globals.yml
+.. code-block:: yaml
+
+   openvswitch_hw_offload: "yes"
+
 Run deployment.
 
 Verification

releasenotes/notes/openvswitch-hw-offload-5d9319d69472db69.yaml

@@ -0,0 +1,5 @@
+---
+features:
+  - |
+    Adds functionality to enable HW offload in OpenvSwitch using
+    ``openvswitch_hw_offload`` variable.