net/wireguard: add MTU option (#1332)

net/wireguard/Makefile

@@ -1,5 +1,5 @@
 PLUGIN_NAME=		wireguard
-PLUGIN_VERSION=		0.10
+PLUGIN_VERSION=		0.11
 PLUGIN_COMMENT=		WireGuard VPN service
 PLUGIN_DEPENDS=		wireguard
 PLUGIN_MAINTAINER=	m.muenz@gmail.com

net/wireguard/src/opnsense/mvc/app/controllers/OPNsense/Wireguard/forms/dialogEditWireguardServer.xml

@@ -35,6 +35,13 @@
         <type>text</type>
         <help>Set port for this instance to listen on.</help>
     </field>
+    <field>
+        <id>server.mtu</id>
+        <label>MTU</label>
+        <type>text</type>
+        <advanced>true</advanced>
+        <help>Set the interface MTU for this interface. Leaving empty uses the MTU from main interface which is fine for most setups.</help>
+    </field>
     <field>
         <id>server.dns</id>
         <label>DNS Server</label>

net/wireguard/src/opnsense/mvc/app/models/OPNsense/Wireguard/Server.xml

@@ -31,6 +31,11 @@
                     <default>51820</default>
                     <Required>Y</Required>
                 </port>
+                <mtu type="IntegerField">
+                    <MinimumValue>1</MinimumValue>
+                    <MaximumValue>9300</MaximumValue>
+                    <Required>N</Required>
+                </mtu>
                 <dns type="CSVListField">
                     <Required>N</Required>
                     <mask>/^([a-fA-F0-9\.:\[\]]*?,)*([a-fA-F0-9\.:\[\]]*)$/</mask>

net/wireguard/src/opnsense/service/templates/OPNsense/Wireguard/wireguard-server.conf

@@ -9,6 +9,9 @@ Address = {{ server_list.tunneladdress }}
 {%         if server_list.dns|default('') != '' %}
 DNS = {{ server_list.dns }}
 {%         endif %}
+{%         if server_list.mtu|default('') != '' %}
+MTU = {{ server_list.mtu }}
+{%         endif %}
 ListenPort = {{ server_list.port }}
 PrivateKey = {{ server_list.privkey }}
 {%         if server_list.disableroutes == '1' %}