introduce playbook to ovs with dpdk

- This change creates a new role to
  support deploying ovs with dpdk.
- This change introduces an enable_ovs_dpdk
  variable to enable ovs with dpdk as part of
  the deploy action.
- This change extends the ovs-dpdkctl.sh tool
  to correctly deploy ovs-dpdk on Ubuntu and CentOS
  hosts.
- This change extends the cleanup-host tool
  to correctly uninstall ovs-dpdkctl.sh tool and its
  systemd files if present on the host.
- This change automatically configures userspace
  kernel drivers.

partial-implementes: bp/ovs-dpdk
Change-Id: I55858d81df437e8258705b75426f61ab9b907c7d

ansible/group_vars/all.yml

@@ -390,6 +390,7 @@ enable_nova_serialconsole_proxy: "no"
 enable_octavia: "no"
 enable_opendaylight: "no"
 enable_openvswitch: "{{ neutron_plugin_agent != 'linuxbridge' | bool }}"
+enable_ovs_dpdk: "no"
 enable_osprofiler: "no"
 enable_panko: "no"
 enable_qdrouterd: "no"

ansible/roles/ovs-dpdk/defaults/main.yml

@@ -0,0 +1,86 @@
+---
+####################
+# Services
+####################
+
+ovsdpdk_services:
+  ovsdpdk-db:
+    container_name: "ovsdpdk_db"
+    image: "{{ ovsdpdk_db_image_full }}"
+    enabled: "{{ neutron_plugin_agent == 'openvswitch' }}"
+    host_in_groups: >-
+      {{
+      inventory_hostname in groups['compute']
+      or (enable_manila | bool and inventory_hostname in groups['manila-share'])
+      or inventory_hostname in groups['neutron-dhcp-agent']
+      or inventory_hostname in groups['neutron-l3-agent']
+      or inventory_hostname in groups['neutron-metadata-agent']
+      or inventory_hostname in groups['neutron-vpnaas-agent']
+      }}
+    volumes:
+      - "{{ node_config_directory }}/ovsdpdk-db/:{{ container_config_directory }}/:ro"
+      - "/etc/localtime:/etc/localtime:ro"
+      - "/run:/run:shared"
+      - "kolla_logs:/var/log/kolla/"
+      - "ovsdpdk_db:/var/lib/openvswitch/"
+  ovsdpdk-vswitchd:
+    container_name: "ovsdpdk_vswitchd"
+    image: "{{ ovsdpdk_vswitchd_image_full }}"
+    enabled: "{{ neutron_plugin_agent == 'openvswitch' }}"
+    privileged: True
+    host_in_groups: >-
+      {{
+      inventory_hostname in groups['compute']
+      or (enable_manila | bool and inventory_hostname in groups['manila-share'])
+      or inventory_hostname in groups['neutron-dhcp-agent']
+      or inventory_hostname in groups['neutron-l3-agent']
+      or inventory_hostname in groups['neutron-metadata-agent']
+      or inventory_hostname in groups['neutron-vpnaas-agent']
+      }}
+    volumes:
+      - "{{ node_config_directory }}/ovsdpdk-vswitchd/:{{ container_config_directory }}/:ro"
+      - "/etc/localtime:/etc/localtime:ro"
+      - "/lib/modules:/lib/modules:ro"
+      - "/run:/run:shared"
+      - "/dev:/dev:shared"
+      - "kolla_logs:/var/log/kolla/"
+
+####################
+# OVS
+####################
+ovs_datapath: "netdev"
+ovs_bridge_mappings: "{% for bridge in neutron_bridge_name.split(',') %}physnet{{ loop.index0 + 1 }}:{{ bridge }}{% if not loop.last %},{% endif %}{% endfor %}"
+ovs_port_mappings: "{% for bridge in neutron_bridge_name.split(',') %} {{ neutron_external_interface.split(',')[loop.index0] }}:{{ bridge }}{% if not loop.last %},{% endif %}{% endfor %}"
+dpdk_tunnel_interface : "{{neutron_external_interface}}"
+dpdk_tunnel_interface_address: "{{ hostvars[inventory_hostname]['ansible_' + dpdk_tunnel_interface]['ipv4']['address'] }}"
+tunnel_interface_network: "{{ hostvars[inventory_hostname]['ansible_' + dpdk_tunnel_interface]['ipv4']['network']}}/{{hostvars[inventory_hostname]['ansible_' + dpdk_tunnel_interface]['ipv4']['netmask']}}"
+tunnel_interface_cidr: "{{dpdk_tunnel_interface_address}}/{{ tunnel_interface_network | ipaddr('prefix') }}"
+ovs_cidr_mappings: "{% if neutron_bridge_name.split(',')|length != 1 %} {neutron_bridge_name.split(',')[0]}:{{ tunnel_interface_cidr }} {% else %} {{ neutron_bridge_name }}:{{ tunnel_interface_cidr }} {% endif %}"
+ovs_mem_channels: 4
+ovs_socket_mem: 1024
+ovs_hugepage_mountpoint: /dev/hugepages
+
+# ovs <2.7 required dpdk phyical port names to be index
+# in pci adress order as dpdkX where X is the index
+# ovs>=2.7 allows arbitray names but the pci adress
+# must be set in a new dpdkdev-opt field
+# valid values are indexed or named.
+ovs_physical_port_policy: named
+
+project_name: "ovs"
+neutron_bridge_name: "br_dpdk"
+
+
+####################
+# Docker
+####################
+ovsdpdk_install_type: "{{ kolla_install_type }}"
+ovsdpdk_tag: "{{ openstack_release }}"
+
+ovsdpdk_db_image: "{{ docker_registry ~ '/' if docker_registry else '' }}{{ docker_namespace }}/{{ kolla_base_distro }}-{{ ovsdpdk_install_type }}-ovsdpdk-db"
+ovsdpdk_db_tag: "{{ ovsdpdk_tag }}"
+ovsdpdk_db_image_full: "{{ ovsdpdk_db_image }}:{{ ovsdpdk_db_tag }}"
+
+ovsdpdk_vswitchd_image: "{{ docker_registry ~ '/' if docker_registry else '' }}{{ docker_namespace }}/{{ kolla_base_distro }}-{{ ovsdpdk_install_type }}-ovsdpdk-vswitchd"
+ovsdpdk_vswitchd_tag: "{{ ovsdpdk_tag }}"
+ovsdpdk_vswitchd_image_full: "{{ ovsdpdk_vswitchd_image }}:{{ ovsdpdk_vswitchd_tag }}"

ansible/roles/ovs-dpdk/handlers/main.yml

@@ -0,0 +1,108 @@
+---
+- name: Restart ovsdpdk-db container
+  vars:
+    service_name: "ovsdpdk-db"
+    service: "{{ ovsdpdk_services[service_name] }}"
+    config_json: "{{ ovsdpdk_config_jsons.results|selectattr('item.key', 'equalto', service_name)|first }}"
+    ovsdpdk_db_container: "{{ check_ovsdpdk_containers.results|selectattr('item.key', 'equalto', service_name)|first }}"
+  kolla_docker:
+    action: "recreate_or_restart_container"
+    common_options: "{{ docker_common_options }}"
+    name: "{{ service.container_name }}"
+    image: "{{ service.image }}"
+    volumes: "{{ service.volumes }}"
+  when:
+    - action != "config"
+    - service.enabled | bool
+    - service.host_in_groups | bool
+    - config_json | changed
+      or ovsdpdk_db_container | changed
+  notify:
+    - Waiting the ovs db service to be ready
+    - Ensuring ovsdpdk bridges are properly setup indexed
+    - Restart ovsdpdk-vswitchd container
+    - Ensuring ovsdpdk bridges are properly setup named
+    - wait for dpdk tunnel ip
+    - ovs-dpdk gather facts
+
+- name: Waiting the ovs db service to be ready
+  vars:
+    service_name: "ovsdpdk-db"
+    service: "{{ ovsdpdk_services[service_name] }}"
+  command: docker exec "{{ service.container_name }}" ovs-vsctl --no-wait show
+  register: check_result
+  until: check_result | success
+  changed_when: False
+  retries: 30
+  delay: 2
+
+- name: Ensuring ovsdpdk bridges are properly setup indexed
+  vars:
+    service_name: "ovsdpdk-db"
+    service: "{{ ovsdpdk_services[service_name] }}"
+  command: "docker exec -e \"CONFIG_FILE={{ container_config_directory }}/ovs-dpdkctl.conf\" {{ service.container_name }} {{ container_config_directory }}/ovs-dpdkctl.sh init"
+  register: status
+  changed_when: status.stdout.find('changed') != -1
+  when:
+    - (inventory_hostname in groups['compute']
+       or (enable_manila | bool and inventory_hostname in groups['manila-share'])
+       or inventory_hostname in groups['neutron-dhcp-agent']
+       or inventory_hostname in groups['neutron-l3-agent']
+       or inventory_hostname in groups['neutron-metadata-agent']
+       or inventory_hostname in groups['neutron-vpnaas-agent'])
+    -  ovs_physical_port_policy == 'indexed'
+
+- name: Restart ovsdpdk-vswitchd container
+  vars:
+    service_name: "ovsdpdk-vswitchd"
+    service: "{{ ovsdpdk_services[service_name] }}"
+    config_json: "{{ ovsdpdk_config_jsons.results|selectattr('item.key', 'equalto', service_name)|first }}"
+    ovsdpdk_vswitchd_container: "{{ check_ovsdpdk_containers.results|selectattr('item.key', 'equalto', service_name)|first }}"
+  kolla_docker:
+    action: "recreate_or_restart_container"
+    common_options: "{{ docker_common_options }}"
+    name: "{{ service.container_name }}"
+    image: "{{ service.image }}"
+    volumes: "{{ service.volumes }}"
+    privileged: "{{ service.privileged | default(True) }}"
+  when:
+    - action != "config"
+    - service.enabled | bool
+    - service.host_in_groups | bool
+    - config_json | changed
+      or ovsdpdk_vswitchd_container | changed
+
+
+- name: Ensuring ovsdpdk bridges are properly setup named
+  vars:
+    service_name: "ovsdpdk-db"
+    service: "{{ ovsdpdk_services[service_name] }}"
+  command: "docker exec -e \"CONFIG_FILE={{ container_config_directory }}/ovs-dpdkctl.conf\" {{ service.container_name }} {{ container_config_directory }}/ovs-dpdkctl.sh init"
+  register: status
+  changed_when: status.stdout.find('changed') != -1
+  when:
+    - (inventory_hostname in groups['compute']
+       or (enable_manila | bool and inventory_hostname in groups['manila-share'])
+       or inventory_hostname in groups['neutron-dhcp-agent']
+       or inventory_hostname in groups['neutron-l3-agent']
+       or inventory_hostname in groups['neutron-metadata-agent']
+       or inventory_hostname in groups['neutron-vpnaas-agent'])
+    -  ovs_physical_port_policy == 'named'
+
+
+- name: wait for dpdk tunnel ip
+  wait_for:
+    host: "{{ dpdk_tunnel_interface_address }}"
+    timeout: 300
+    sleep: 5
+
+- name: ovs-dpdk gather facts
+  setup:
+    filter: ansible_*
+  when:
+    - (inventory_hostname in groups['compute']
+       or (enable_manila | bool and inventory_hostname in groups['manila-share'])
+       or inventory_hostname in groups['neutron-dhcp-agent']
+       or inventory_hostname in groups['neutron-l3-agent']
+       or inventory_hostname in groups['neutron-metadata-agent']
+       or inventory_hostname in groups['neutron-vpnaas-agent'])

ansible/roles/ovs-dpdk/tasks/check.yml

@@ -0,0 +1 @@
+---

ansible/roles/ovs-dpdk/tasks/config.yml

@@ -0,0 +1,60 @@
+---
+- name: Ensuring config directories exist
+  file:
+    path: "{{ node_config_directory }}/{{ item.key }}"
+    state: "directory"
+    recurse: yes
+  when:
+    - item.value.enabled | bool
+    - item.value.host_in_groups | bool
+  with_dict: "{{ ovsdpdk_services }}"
+
+- name: Copying over config.json files for services
+  template:
+    src: "{{ item.key }}.json.j2"
+    dest: "{{ node_config_directory }}/{{ item.key }}/config.json"
+  register: ovsdpdk_config_jsons
+  when:
+    - item.value.enabled | bool
+    - item.value.host_in_groups | bool
+  with_dict: "{{ ovsdpdk_services }}"
+  notify:
+  - "Restart {{ item.key }} container"
+
+- name: Copying ovs-dpdkctl tool
+  copy:
+    src: ../tools/ovs-dpdkctl.sh
+    dest: "{{ node_config_directory }}/ovsdpdk-db/ovs-dpdkctl.sh"
+    mode: 0777
+
+- name: Install ovs-dpdkctl service and config
+  become: True
+  command: "{{ node_config_directory }}/ovsdpdk-db/ovs-dpdkctl.sh install"
+  environment:
+    CONFIG_FILE: "{{ node_config_directory }}/ovsdpdk-db/ovs-dpdkctl.conf"
+    bridge_mappings: "{{ ovs_bridge_mappings }}"
+    port_mappings: "{{ ovs_port_mappings }}"
+    cidr_mappings: "{{ ovs_cidr_mappings }}"
+    ovs_mem_channels: "{{ ovs_mem_channels }}"
+    ovs_socket_mem: "{{ ovs_socket_mem }}"
+    hugepage_mountpoint: "{{ ovs_hugepage_mountpoint }}"
+    ovs_physical_port_policy: "{{ ovs_physical_port_policy }}"
+
+
+# TODO check the environment change
+- name: Check ovs containers
+  kolla_docker:
+    action: "compare_container"
+    common_options: "{{ docker_common_options }}"
+    name: "{{ item.value.container_name }}"
+    image: "{{ item.value.image }}"
+    privileged: "{{ item.value.privileged | default(False) }}"
+    volumes: "{{ item.value.volumes }}"
+  register: check_ovsdpdk_containers
+  when:
+    - action != "config"
+    - item.value.enabled | bool
+    - item.value.host_in_groups | bool
+  with_dict: "{{ ovsdpdk_services }}"
+  notify:
+    - "Restart {{ item.key }} container"

ansible/roles/ovs-dpdk/tasks/deploy.yml

@@ -0,0 +1,5 @@
+---
+- include: config.yml
+
+- name: Flush Handlers
+  meta: flush_handlers

ansible/roles/ovs-dpdk/tasks/main.yml

@@ -0,0 +1,2 @@
+---
+- include: "{{ action }}.yml"

ansible/roles/ovs-dpdk/tasks/prechecks.yml

@@ -0,0 +1 @@
+---

ansible/roles/ovs-dpdk/tasks/pull.yml

@@ -0,0 +1,11 @@
+---
+- name: Pulling ovs-dpdk images
+  kolla_docker:
+    action: "pull_image"
+    common_options: "{{ docker_common_options }}"
+    image: "{{ item.value.image }}"
+  when:
+    - item.value.enabled | bool
+    - item.value.host_in_groups | bool
+  with_dict: "{{ ovsdpdk_services }}"
+

ansible/roles/ovs-dpdk/tasks/reconfigure.yml

@@ -0,0 +1,2 @@
+---
+- include: deploy.yml

ansible/roles/ovs-dpdk/tasks/upgrade.yml

@@ -0,0 +1,2 @@
+---
+- include: deploy.yml

ansible/roles/ovs-dpdk/templates/ovsdpdk-db.json.j2

@@ -0,0 +1,4 @@
+{
+    "command": "start-ovsdb-server {{ api_interface_address }}",
+    "config_files": []
+}

ansible/roles/ovs-dpdk/templates/ovsdpdk-vswitchd.json.j2

@@ -0,0 +1,4 @@
+{
+    "command": "/usr/sbin/ovs-vswitchd unix:/run/openvswitch/db.sock -vconsole:emer -vsyslog:err -vfile:info --mlockall --log-file=/var/log/kolla/openvswitch/ovs-vswitchd.log",
+    "config_files": []
+}

ansible/site.yml

@@ -322,7 +322,15 @@
   roles:
     - { role: openvswitch,
         tags: openvswitch,
-        when: enable_openvswitch | bool }
+        when: "(enable_openvswitch | bool) and not (enable_ovs_dpdk | bool)"}
+
+- name: Apply role ovs-dpdk
+  hosts:
+    - openvswitch
+  roles:
+    - { role: ovs-dpdk,
+        tags: ovs-dpdk,
+        when: "(enable_openvswitch | bool) and (enable_ovs_dpdk | bool)"}
 
 - name: Apply nova-hyperv role
   gather_facts: false

etc/kolla/globals.yml

@@ -192,6 +192,7 @@ kolla_internal_vip_address: "10.10.10.254"
 #enable_octavia: "no"
 #enable_opendaylight: "no"
 #enable_openvswitch: "{{ neutron_plugin_agent != 'linuxbridge' }}"
+#enable_ovs_dpdk: "no"
 #enable_osprofiler: "no"
 #enable_panko: "no"
 #enable_qdrouterd: "no"

releasenotes/notes/ovs-dpdk-a48404777d3836a3.yaml

@@ -0,0 +1,43 @@
+---
+prelude: >
+    The Data Plane Development Kit (DPDK) is a collection of userspace
+    libraries and tools that facilitate the development of high-performance
+    userspace networking applications. During the Pike cycle, kolla has been
+    extended to support deploying OpenvSwitch with the dpdk netdev dataplane.
+features:
+  - |
+    A new ovs-dpdk role has been introduced to support deploy OpenvSwitch with
+    the userspace DPDK dataplane. This playbook has been tested on Centos and
+    Ubuntu hosts and introduces a new enable_ovs_dpdk variable to control
+    deployment of OVS with DPDK instead of kernel ovs.
+  - |
+    The ovs-dpdkctl.sh tool has been enhanced to enable automatic loading of
+    DPDK compatible kernel modules.
+  - |
+    The ovs-dpdkctl.sh tool has been extended to configure per host
+    tunnel ip address to enable vxlan and other tunnel networking.
+issues:
+  - |
+    The ovs-dpdk role introduced this release has been tested on centos 7 and
+    ubuntu 16.04 hosts. While both host operating systems can be used to deploy
+    ovs-dpdk containers a conflict exists between the cgroups created by docker
+    and systemd on centos. These conflicts prevent restarting the ovs-dpdk
+    containers once deployed. This issue is not present on Ubuntu and is fixed
+    in newer versions of systemd. Deploying the ovs-dpdk role on centos is not
+    advised in production on CentOS hosts unless you have validated that this
+    issue has been addressed.
+upgrade:
+  - |
+    When upgrading ovs-dpdk it should be noted that this will alway invovle a
+    dataplane outage. Unlike kernel OVS the dataplane for ovs-dpdk executes in
+    the ovs-vswitchd process. As such it is recommended to always evacuate
+    all vm workloads from a node running ovs-dpdk prior to upgrading.
+other:
+  - |
+    Reconfiguring form kernel based OVS to OVS with DPDK has not been tested
+    in this release. Changing ovs datapaths on a deployed node requires
+    neutron config changes and libvirt xml changes for all running instances
+    including a hard reboot of the vm. VMs deployed to an node running ovs-dpdk
+    require hugepage backed memory to function correctly. As such it is not
+    advised to convert an existing compute node to use ovs-dpdk
+    if it currently has VMs deployed.

tools/cleanup-host

@@ -56,8 +56,14 @@ if [[ "$glance_file_datadir_volume" != "glance" && -d "$glance_file_datadir_volu
     rm -rfv  $glance_file_datadir_volume
 fi
 
-echo "Getting folders name..."
 FOLDER_PATH="/etc/kolla/"
+
+if [[ -e "$FOLDER_PATH/ovsdpdk-db/ovs-dpdkctl.sh" ]]; then
+    echo uninstalling ovs-dpdk service files and tools.
+    sudo CONFIG_FILE="$FOLDER_PATH/ovsdpdk-db/ovs-dpdkctl.conf" $FOLDER_PATH/ovsdpdk-db/ovs-dpdkctl.sh uninstall
+fi
+
+echo "Getting folders name..."
 for dir in $FOLDER_PATH*; do
     if [ "$dir" == "$FOLDER_PATH""passwords.yml" ] || \
        [ "$dir" == "$FOLDER_PATH""globals.yml" ] || \

tools/kolla-ansible

@@ -49,7 +49,7 @@ Commands:
     prechecks           Do pre-deployment checks for hosts
     check               Do post-deployment smoke tests
     mariadb_recovery    Recover a completely stopped mariadb cluster
-    bootstrap-servers   bootstrap servers with kolla deploy dependencies
+    bootstrap-servers   Bootstrap servers with kolla deploy dependencies
     destroy             Destroy Kolla containers, volumes and host configuration
                             --include-images to also destroy Kolla images
                             --include-dev to also destroy dev mode repos

tools/ovs-dpdkctl.sh

@@ -8,6 +8,7 @@ fi
 FULL_PATH=$(realpath "${BASH_SOURCE[0]}")
 CONFIG_FILE=${CONFIG_FILE:-"/etc/default/ovs-dpdk.conf"}
 SERVICE_FILE="/etc/systemd/system/ovs-dpdkctl.service"
+BRIDGE_SERVICE_FILE="/etc/systemd/system/ovs-dpdk-bridge.service"
 
 function get_value {
     crudini --get $CONFIG_FILE $@
@@ -37,8 +38,12 @@ function del_config {
     rm -f $CONFIG_FILE
 }
 
+function is_redhat_family {
+    [[ -e /etc/redhat-release ]] ; echo $?
+}
+
 function generate_pciwhitelist {
-    local _Whitelist=''
+    _Whitelist=''
     for nic in $(list_dpdk_nics); do
         address="$(get_value $nic address)"
         if [ "$_Whitelist" == '' ]; then
@@ -79,6 +84,7 @@ function gen_config {
     set_value ovs ovs_socket_mem ${ovs_socket_mem:-"512"}
     set_value ovs dpdk_interface_driver ${dpdk_interface_driver:-"uio_pci_generic"}
     set_value ovs hugepage_mountpoint ${hugepage_mountpoint:-"/dev/hugepages"}
+    set_value ovs physical_port_policy ${ovs_physical_port_policy:-"named"}
 
     ls -al /sys/class/net/* | awk '$0 ~ /pci/ {n=split($NF,a,"/"); print "\n[" a[n] "]\naddress = " a[n-2]  "\ndriver ="}' >> $CONFIG_FILE
 
@@ -93,8 +99,8 @@ function gen_config {
 }
 
 function bind_nic {
-    echo $1 > /sys/bus/pci/drivers/$2/bind
     echo $2 > /sys/bus/pci/devices/$1/driver_override
+    echo $1 > /sys/bus/pci/drivers/$2/bind
 }
 
 function unbind_nic {
@@ -137,7 +143,6 @@ function unbind_nics {
     done
 }
 
-
 function get_address_by_name {
     ls -al /sys/class/net/$1 | awk '$0 ~ /pci/ {n=split($NF,a,"/"); print a[n-2] }'
 }
@@ -147,7 +152,7 @@ function get_driver_by_address {
 }
 
 function get_port_bridge {
-    for pair in $(get_value ovs port port_mappings); do
+    for pair in $(get_value ovs port_mappings); do
         nic=`echo $pair | cut -f 1 -d ":"`
         if [[ "$nic" == "$1" ]]; then
             bridge=`echo $pair | cut -f 2 -d ":"`
@@ -178,7 +183,7 @@ function init_ovs_bridges {
 }
 
 function init_ovs_interfaces {
-    local pci_port_pairs ==''
+    pci_port_pairs=''
     for nic in $(list_dpdk_nics); do
         address="$(get_value $nic address)"
         if [ "$pci_port_pairs" == '' ]; then
@@ -194,10 +199,13 @@ function init_ovs_interfaces {
         nic="$(echo $pair | cut -f 2 -d ",")"
         bridge="$(get_port_bridge $nic)"
         # ovs 2.6 and older requires dpdkX names, ovs 2.7+ requires dpdk-devargs instead.
+        if [ "$(get_value ovs physical_port_policy)" == "indexed" ]; then
             ovs-vsctl --no-wait --may-exist add-port $bridge "dpdk${dpdk_port_number}" \
-        -- set Interface  "dpdk${dpdk_port_number}" type=dpdk ||  \
+            -- set Interface  "dpdk${dpdk_port_number}" type=dpdk
-        ovs-vsctl --no-wait --may-exist add-port $bridge $nic \
+        else
+            ovs-vsctl --may-exist add-port $bridge $nic \
             -- set Interface  $nic type=dpdk options:dpdk-devargs=$addr
+        fi
 
         dpdk_port_number=$((dpdk_port_number+1))
     done
@@ -210,6 +218,57 @@ function init {
     init_ovs_interfaces
 }
 
+function install_network_manager_conf {
+    pair=$(get_value ovs cidr_mappings)
+    bridge=`echo $pair | cut -f 1 -d ":"`
+    cidr=`echo $pair | cut -f 2 -d ":"`
+    ip=`echo $cidr | cut -f 1 -d "/"`
+    prefix=`echo $cidr | cut -f 2 -d "/"`
+    mask=""
+    full_octets=$(expr $prefix / 8)
+    partial_octet=$(expr $prefix % 8)
+
+    for octet in 0 1 2 3 ; do
+        if [[ "$octet" < "$full_octets" ]]; then
+            mask+=255
+        elif [[ "$octet" == "$full_octets" ]]; then
+            mask+=$((256 - 2**(8-$partial_octet)))
+        else
+            mask+=0
+        fi
+        [[ "$octet" < 3 ]] && mask+=.
+    done
+    if  [[ is_redhat_family == 0 ]]; then
+        cat << EOF | tee "/etc/sysconfig/network-scripts/ifcfg-$bridge"
+DEVICE=$bridge
+BOOTPROTO=static
+IPADDR=$ip
+NETMASK=$mask
+HOTPLUG=yes
+ONBOOT=yes
+EOF
+install_redhat_bridge_service $bridge
+    else
+        cat << EOF | tee "/etc/network/interfaces.d/$bridge.cfg"
+    auto $bridge
+    iface $bridge inet static
+        address $ip
+        netmask $mask
+EOF
+
+    fi
+}
+
+function uninstall_network_manager_conf {
+    pair=$(get_value ovs cidr_mappings)
+    bridge=`echo $pair | cut -f 1 -d ":"`
+    if  [[ is_redhat_family == 0 ]]; then
+        rm -f /etc/sysconfig/network-scripts/ifcfg-$bridge
+    else
+        rm -f /etc/network/interfaces.d/$bridge.cfg
+    fi
+}
+
 function install_service {
     cat << EOF | tee "$SERVICE_FILE"
 
@@ -235,13 +294,63 @@ EOF
     systemctl enable ovs-dpdkctl
 }
 
+function install_redhat_bridge_service {
+    cat << EOF | tee "$BRIDGE_SERVICE_FILE"
+[Unit]
+Description=configuration service for ovs-dpdk bridge.
+After=docker.service
+After=network.target
+After=ovs-dpdkctl.service
+
+[Service]
+Type=simple
+RemainAfterExit=yes
+ExecStartPre=/bin/bash -c "[[ -e /sys/class/net/$1 ]]"
+ExecStart=/usr/sbin/ifup $1
+ExecStop=/usr/sbin/ifdown $1
+Restart=on-failure
+RestartSec=5
+
+[Install]
+WantedBy=multi-user.target
+
+EOF
+    systemctl daemon-reload
+    systemctl enable ovs-dpdk-bridge
+}
+
 function uninstall_service {
     systemctl disable ovs-dpdkctl
     rm -f "$SERVICE_FILE"
+    if [ -e "$BRIDGE_SERVICE_FILE" ]; then
+        systemctl disable ovs-dpdk-bridge
+        rm -f "$BRIDGE_SERVICE_FILE"
+    fi
     systemctl daemon-reload
 }
 
+function configure_kernel_modules {
+    driver="$(get_value ovs dpdk_interface_driver)"
+    lsmod | grep -ws $driver > /dev/null || modprobe $driver
+    if  [[ is_redhat_family == 0 ]]; then
+        [[ ! -e /etc/modules-load.d/${driver}.conf ]] && echo $driver | tee /etc/modules-load.d/${driver}.conf
+    else
+        grep -ws $driver /etc/modules > /dev/null || echo $driver | tee -a /etc/modules
+    fi
+}
+
+function unconfigure_kernel_modules {
+    driver="$(get_value ovs dpdk_interface_driver)"
+    lsmod | grep -ws $driver > /dev/null && rmmod $driver
+    if [[ is_redhat_family == 0 ]] ; then
+        [[ -e /etc/modules-load.d/${driver}.conf ]] && rm -f /etc/modules-load.d/${driver}.conf
+    else
+        grep  -ws $driver /etc/modules > /dev/null && sed -e "s/$driver//" -i /etc/modules
+    fi
+}
+
 function install {
+    configure_kernel_modules
     if [ ! -e "$SERVICE_FILE" ]; then
         install_service
     fi
@@ -253,6 +362,10 @@ function install {
         gen_config
     fi
     systemctl start ovs-dpdkctl
+    install_network_manager_conf
+    if  [[ is_redhat_family == 0 ]]; then
+        systemctl start ovs-dpdk-bridge
+    fi
 }
 
 function uninstall {
@@ -260,14 +373,16 @@ function uninstall {
     if [ -e "$SERVICE_FILE" ]; then
         uninstall_service
     fi
+    uninstall_network_manager_conf
+    unconfigure_kernel_modules
     if [ -e /bin/ovs-dpdkctl ]; then
         rm -f /bin/ovs-dpdkctl
     fi
     if [ -e "$CONFIG_FILE" ]; then
         rm -f "$CONFIG_FILE"
     fi
-}
 
+}
 
 function useage {
     cat << "EOF"