From 75599e6ac5c8d02c731627aa780288850592afe8 Mon Sep 17 00:00:00 2001
From: yatin <ykarel@redhat.com>
Date: Tue, 20 Feb 2018 10:27:32 +0530
Subject: [PATCH] Set mtu for linuxbridge driver

Review https://review.openstack.org/#/c/540077/ setting
requires global_physnet_mtu to be set lower than the
underlying network's mtu. So in some cases, For example
vm on ophenstack cloud by default has 1450 as mtu, so
global_physnet_mtu for neutron deployed on these vm should
be set to <= 1450.

Change-Id: Ib305f0ecfd8402dfe16f84eda21928fd2e615280
---
 manifests/neutron.pp | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/manifests/neutron.pp b/manifests/neutron.pp
index 1865be139..f47b6d566 100644
--- a/manifests/neutron.pp
+++ b/manifests/neutron.pp
@@ -126,6 +126,12 @@ class openstack_integration::neutron (
   }
   $plugins_list = delete_undef_values(['router', 'metering', 'firewall', 'lbaasv2', 'qos', 'trunk', $bgpvpn_plugin, $l2gw_plugin])
 
+  if $driver == 'linuxbridge' {
+      $global_physnet_mtu    = '1450'
+  } else {
+      $global_physnet_mtu    = undef
+  }
+
   class { '::neutron':
     default_transport_url      => os_transport_url({
       'transport' => $::openstack_integration::config::messaging_default_proto,
@@ -153,6 +159,7 @@ class openstack_integration::neutron (
     key_file                   => "/etc/neutron/ssl/private/${::fqdn}.pem",
     notification_topics        => $notification_topics,
     notification_driver        => 'messagingv2',
+    global_physnet_mtu         => $global_physnet_mtu,
   }
   class { '::neutron::client': }
   class { '::neutron::keystone::authtoken':