openstack-ansible-os_neutron/tasks/providers/setup_ovs_dpdk.yml

---
# (c) 2019, James Denton <james.denton@outlook.com>
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

- name: Set alternative ovs-vswitchd service
  alternatives:
    name: ovs-vswitchd
    path: /usr/lib/openvswitch-switch-dpdk/ovs-vswitchd-dpdk
  when:
    - ansible_pkg_mgr in ['apt']
    - neutron_services['neutron-openvswitch-agent']['group'] in group_names
    - '"nova_compute" in group_names'

- name: Configure DPDK interface to driver bindings
  template:
    src: dpdk_interfaces.j2
    dest: "/etc/dpdk/interfaces"
    owner: "root"
    group: "root"
  when:
    - neutron_services['neutron-openvswitch-agent']['group'] in group_names
    - '"nova_compute" in group_names'

- name: Configure DPDK hugepage allocation
  template:
    src: dpdk.conf.j2
    dest: "/etc/dpdk/dpdk.conf"
    owner: "root"
    group: "root"
  when:
    - neutron_services['neutron-openvswitch-agent']['group'] in group_names
    - '"nova_compute" in group_names'

- name: Ensure DPDK service is started and enabled
  systemd:
    name: "{{ dpdk_service_name }}"
    state: restarted
    enabled: yes
  when:
    - neutron_services['neutron-openvswitch-agent']['group'] in group_names
    - '"nova_compute" in group_names'

- name: Ensure Open vSwitch service is started and enabled
  systemd:
    name: "{{ neutron_ovs_service_name }}"
    state: restarted
    enabled: yes
  when:
    - neutron_services['neutron-openvswitch-agent']['group'] in group_names

- name: Set DPDK lcore mask
  command: "ovs-vsctl --no-wait set Open_vSwitch . other_config:dpdk-lcore-mask={{ ovs_dpdk_lcore_mask }}"
  when:
    - neutron_services['neutron-openvswitch-agent']['group'] in group_names
    - '"nova_compute" in group_names'

- name: Set DPDK PMD cpu mask
  command: "ovs-vsctl --no-wait set Open_vSwitch . other_config:pmd-cpu-mask={{ ovs_dpdk_pmd_cpu_mask }}"
  when:
    - neutron_services['neutron-openvswitch-agent']['group'] in group_names
    - '"nova_compute" in group_names'

- name: Set DPDK socket memory
  command: "ovs-vsctl --no-wait set Open_vSwitch . other_config:dpdk-socket-mem={{ ovs_dpdk_socket_mem }}"
  when:
    - neutron_services['neutron-openvswitch-agent']['group'] in group_names
    - '"nova_compute" in group_names'

- name: Enable DPDK support for openvswitch
  command: "ovs-vsctl --no-wait set Open_vSwitch . other_config:dpdk-init=true"
  when:
    - neutron_services['neutron-openvswitch-agent']['group'] in group_names
    - '"nova_compute" in group_names'

# (jamesdenton) Should replace hard dir with var, and only do this on computes
- name: Create vhost_socket directory
  file:
    path: /var/lib/vhost_socket
    state: directory
    owner: libvirt-qemu
    group: "{{ vhost_socket_directory_group }}"
    mode: "0755"
  when:
    - neutron_services['neutron-openvswitch-agent']['group'] in group_names
    - '"nova_compute" in group_names'

# NOTE: This needs to be netdev for compute and system for network node
# Should I set an override for network nodes (non-dpdk)to default 'system' rather than 'netdev'?
- name: Setup Network Provider Bridges
  openvswitch_bridge:
    bridge: "{{ bridge_mapping.split(':')[1] }}"
    set: "bridge {{ bridge_mapping.split(':')[1] }} datapath_type={{ ovs_datapath }}"
    fail_mode: secure
    state: present
  with_items: "{{ neutron_provider_networks.network_mappings.split(',') }}"
  loop_control:
    loop_var: bridge_mapping
  when:
    - neutron_services['neutron-openvswitch-agent']['group'] in group_names
    - neutron_plugin_type in ['ml2.ovs', 'ml2.ovs.dvr']
    - neutron_provider_networks.network_mappings is defined

# (todo) Loop thru ints or build a bond with ints. TBD.
- name: Add ports to Network Provider Bridges
  openvswitch_port:
    bridge: "{{ interface_mapping.split(':')[0] }}"
    port: "{{ interface_mapping.split(':',1)[1] }}"
    set: "Interface {{ interface_mapping.split(':',1)[1] }} type=dpdk options:dpdk-devargs='{{ interface_mapping.split(':',1)[1] }}'"
    state: present
  with_items: "{{ neutron_provider_networks.network_interface_mappings.split(',') }}"
  loop_control:
    loop_var: interface_mapping
  when:
    - neutron_services['neutron-openvswitch-agent']['group'] in group_names
    - neutron_plugin_type in ['ml2.ovs', 'ml2.ovs.dvr']
    - neutron_provider_networks.network_interface_mappings is defined and (neutron_provider_networks.network_interface_mappings|length > 0)