| # Neutron Modular Layer 2 plugin | 
 | # ------------------------------ | 
 |  | 
 | # Save trace setting | 
 | MY_XTRACE=$(set +o | grep xtrace) | 
 | set +o xtrace | 
 |  | 
 | # Default openvswitch L2 agent | 
 | Q_AGENT=${Q_AGENT:-openvswitch} | 
 | source $TOP_DIR/lib/neutron_plugins/${Q_AGENT}_agent | 
 |  | 
 | function neutron_plugin_configure_common() { | 
 |     Q_PLUGIN_CONF_PATH=etc/neutron/plugins/ml2 | 
 |     Q_PLUGIN_CONF_FILENAME=ml2_conf.ini | 
 |     Q_DB_NAME="neutron_ml2" | 
 |     Q_PLUGIN_CLASS="neutron.plugins.ml2.plugin.Ml2Plugin" | 
 | } | 
 |  | 
 | function neutron_plugin_configure_service() { | 
 |     if [[ "$ENABLE_TENANT_TUNNELS" = "True" ]]; then | 
 |         iniset /$Q_PLUGIN_CONF_FILE ml2 tenant_network_types gre | 
 |         iniset /$Q_PLUGIN_CONF_FILE ml2_type_gre tunnel_id_ranges $TENANT_TUNNEL_RANGES | 
 |     elif [[ "$ENABLE_TENANT_VLANS" = "True" ]]; then | 
 |         iniset /$Q_PLUGIN_CONF_FILE ml2 tenant_network_types vlan | 
 |     else | 
 |         echo "WARNING - The ml2 plugin is using local tenant networks, with no connectivity between hosts." | 
 |     fi | 
 |  | 
 |     # Override ``ML2_VLAN_RANGES`` and any needed agent configuration | 
 |     # variables in ``localrc`` for more complex physical network | 
 |     # configurations. | 
 |     if [[ "$ML2_VLAN_RANGES" = "" ]] && [[ "$PHYSICAL_NETWORK" != "" ]]; then | 
 |         ML2_VLAN_RANGES=$PHYSICAL_NETWORK | 
 |         if [[ "$TENANT_VLAN_RANGE" != "" ]]; then | 
 |             ML2_VLAN_RANGES=$ML2_VLAN_RANGES:$TENANT_VLAN_RANGE | 
 |         fi | 
 |     fi | 
 |     if [[ "$ML2_VLAN_RANGES" != "" ]]; then | 
 |         iniset /$Q_PLUGIN_CONF_FILE ml2_type_vlan network_vlan_ranges $ML2_VLAN_RANGES | 
 |     fi | 
 |  | 
 |     # REVISIT(rkukura): Setting firewall_driver here for | 
 |     # neutron.agent.securitygroups_rpc.is_firewall_enabled() which is | 
 |     # used in the server, in case no L2 agent is configured on the | 
 |     # server's node. If an L2 agent is configured, this will get | 
 |     # overridden with the correct driver. The ml2 plugin should | 
 |     # instead use its own config variable to indicate whether security | 
 |     # groups is enabled, and that will need to be set here instead. | 
 |     if [[ "$Q_USE_SECGROUP" == "True" ]]; then | 
 |         iniset /$Q_PLUGIN_CONF_FILE SECURITYGROUP firewall_driver neutron.agent.not.a.real.FirewallDriver | 
 |     else | 
 |         iniset /$Q_PLUGIN_CONF_FILE SECURITYGROUP firewall_driver neutron.agent.firewall.NoopFirewallDriver | 
 |     fi | 
 |  | 
 | } | 
 |  | 
 | function has_neutron_plugin_security_group() { | 
 |     return 0 | 
 | } | 
 |  | 
 | # Restore xtrace | 
 | $MY_XTRACE |