man: move documentation about NetClass from systemd.unit(5) to systemd.resource-control(5)

This is after all where we expose all the other cgroup props, especially
those that can be adjusted dynamically.

1 files changed, 17 insertions, 0 deletions

diff --git a/man/systemd.resource-control.xml b/man/systemd.resource-control.xml
index 98f4d75ddb..9c5366a2b0 100644
--- a/man/systemd.resource-control.xml
+++ b/man/systemd.resource-control.xml
@@ -412,6 +412,23 @@
       </varlistentry>
 
       <varlistentry>
+        <term><varname>NetClass=</varname></term>
+        <listitem><para>Configures a network class number to assign to the
+        unit. This value will be set to the
+        <literal>net_cls.class_id</literal> property of the
+        <literal>net_cls</literal> cgroup of the unit. The directive
+        accepts a numerical value (for fixed number assignment) and the keyword
+        <literal>auto</literal> (for dynamic allocation). Network traffic of
+        all processes inside the unit will have the network class ID assigned
+        by the kernel. Also see
+        the kernel docs for
+        <ulink url="https://www.kernel.org/doc/Documentation/cgroups/net_cls.txt">net_cls controller</ulink>
+        and
+        <citerefentry><refentrytitle>systemd.resource-control</refentrytitle><manvolnum>5</manvolnum></citerefentry>.
+        </para></listitem>
+      </varlistentry>
+
+      <varlistentry>
         <term><varname>Slice=</varname></term>
 
         <listitem>