Add ovs hardware Offload support to ovs mechansim driver

Depends-On: I3c0d24a31f0a1cac2cb8c5da8125051d4348eed6
Depends-On  I578f956f2a8c6ee29a9d1ff38ee51765bcab05c1
Implements: blueprint tripleo-ovs-hw-offload

Change-Id: I7e20ab2111e7d71380da844a15835b5fac1125d9

environments/neutron-ovs-hw-offload.yaml

@@ -0,0 +1,24 @@
+# A Heat environment file that enables OVS Hardware Offload in the overcloud.
+# This works by configuring SR-IOV NIC with switchdev and OVS Hardware Offload on
+# compute nodes. The feature supported in OVS 2.8.0
+
+resource_registry:
+  OS::TripleO::Services::NeutronSriovHostConfig: ../puppet/services/neutron-sriov-host-config.yaml
+
+parameter_defaults:
+
+  NovaSchedulerDefaultFilters: ['RetryFilter','AvailabilityZoneFilter','RamFilter','ComputeFilter','ComputeCapabilitiesFilter','ImagePropertiesFilter','ServerGroupAntiAffinityFilter','ServerGroupAffinityFilter','PciPassthroughFilter']
+  NovaSchedulerAvailableFilters: ["nova.scheduler.filters.all_filters","nova.scheduler.filters.pci_passthrough_filter.PciPassthroughFilter"]
+
+  # Kernel arguments for ComputeSriov node
+  ComputeSriovParameters:
+    KernelArgs: "intel_iommu=on iommu=pt"
+    OvsHwOffload: True
+    # Number of VFs that needs to be configured for a physical interface
+    #NeutronSriovNumVFs: ["ens3f0:4:switchdev"]
+    # Mapping of SR-IOV PF interface to neutron physical_network.
+    # In case of Vxlan/GRE physical_network should be null.
+    # In case of flat/vlan the physical_network should as configured in neutron.
+    #NovaPCIPassthrough:
+    #  - devname: "ens3f0"
+    #    physical_network: null

puppet/services/neutron-ovs-agent.yaml

@@ -78,6 +78,11 @@ parameters:
     default:
       tag: openstack.neutron.agent.openvswitch
       path: /var/log/neutron/openvswitch-agent.log
+  OvsHwOffload:
+    default: false
+    description: |
+      Enable OVS Hardware Offload. This feature supported from OVS 2.8.0
+    type: boolean
 
 conditions:
   no_firewall_driver: {equals : [{get_param: NeutronOVSFirewallDriver}, '']}
@@ -111,9 +116,11 @@ resources:
         map_replace:
           - map_replace:
             - neutron::agents::ml2::ovs::bridge_mappings: NeutronBridgeMappings
+              vswitch::ovs::enable_hw_offload: OvsHwOffload
             - values: {get_param: [RoleParameters]}
           - values:
               NeutronBridgeMappings: {get_param: NeutronBridgeMappings}
+              OvsHwOffload: {get_param: OvsHwOffload}
 
 outputs:
   role_data:

releasenotes/notes/ovs-hw-offload-a6bf0fa9c39a8204.yaml

@@ -0,0 +1,6 @@
+---
+features:
+- Add support for OVS Hardware Offload.
+  This feature requires Linux Kernel >= 4.13
+  Open vSwitch >= 2.8 iproute >= 4.12.
+