man: split out systemd.link(5) from udev(7)

1 files changed, 8 insertions, 280 deletions

diff --git a/man/udev.xml b/man/udev.xml
index 95b37fd0c..4e5f8f00a 100644
--- a/man/udev.xml
+++ b/man/udev.xml
@@ -307,8 +307,11 @@
         <varlistentry>
           <term><varname>NAME</varname></term>
           <listitem>
-            <para>The name to use for a network interface. The name of a device node
-            cannot be changed by udev, only additional symlinks can be created.</para>
+            <para>The name to use for a network interface. See
+            <citerefentry><refentrytitle>systemd.link</refentrytitle><manvolnum>5</manvolnum></citerefentry>
+            for a higher-level mechanism for setting the interface name.
+            The name of a device node cannot be changed by udev, only additional
+            symlinks can be created.</para>
           </listitem>
         </varlistentry>
 
@@ -759,284 +762,6 @@
       During runtime only the binary database is used.</para>
   </refsect1>
 
-  <refsect1><title>Network Link Configuration</title>
-      <para>Network link configuration is performed by the <literal>net_setup_link</literal>
-      udev builtin.</para>
-
-      <para>The link files are read from the files located in the
-      system network directory <filename>/usr/lib/systemd/network</filename>,
-      the volatile runtime network directory <filename>/run/systemd/network</filename>
-      and the local administration network directory <filename>/etc/systemd/network</filename>.
-      Link files must have the extension <filename>.link</filename>; other extensions are ignored.
-      All link files are collectively sorted and processed in lexical order,
-      regardless of the directories in which they live. However, files with
-      identical filenames replace each other. Files in <filename>/etc</filename>
-      have the highest priority, files in <filename>/run</filename> take precedence
-      over files with the same name in <filename>/usr/lib</filename>. This can be
-      used to override a system-supplied link file with a local file if needed;
-      a symlink in <filename>/etc</filename> with the same name as a link file in
-      <filename>/usr/lib</filename>, pointing to <filename>/dev/null</filename>,
-      disables the link file entirely.</para>
-
-      <para>The link file contains a <literal>[Match]</literal> section, which
-      determines if a given link file may be applied to a given device; and a
-      <literal>[Link]</literal> section specifying how the device should be
-      configured. The first (in lexical order) of the link files that matches
-      a given device is applied.</para>
-
-      <para>A link file is said to match a device if each of the entries in the
-      <literal>[Match]</literal> section matches, or if the section is empty.
-      The following keys are accepted:</para>
-
-      <variablelist class='network-directives'>
-        <varlistentry>
-          <term><varname>MACAddress=</varname></term>
-          <listitem>
-            <para>The hardware address.
-            </para>
-          </listitem>
-        </varlistentry>
-        <varlistentry>
-          <term><varname>Path=</varname></term>
-          <listitem>
-            <para>The persistent path, as exposed by the udev property <literal>ID_PATH</literal>.
-            May contain shell style globs.</para>
-          </listitem>
-        </varlistentry>
-        <varlistentry>
-          <term><varname>Driver=</varname></term>
-          <listitem>
-            <para>The driver currently bound to the device, as exposed by the
-            udev property <literal>DRIVER</literal> of its parent device, or if
-            that is not set the driver as exposed by <literal>ethtool -i</literal>
-            of the device itself.</para>
-          </listitem>
-        </varlistentry>
-        <varlistentry>
-          <term><varname>Type=</varname></term>
-          <listitem>
-            <para>The device type, as exposed by the udev property <literal>DEVTYPE</literal>.</para>
-          </listitem>
-        </varlistentry>
-        <varlistentry>
-          <term><varname>Host=</varname></term>
-          <listitem>
-            <para>Matches against the hostname or machine ID of the
-            host. See <literal>ConditionHost=</literal> in
-            <citerefentry><refentrytitle>systemd.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry>
-            for details.</para>
-          </listitem>
-        </varlistentry>
-        <varlistentry>
-          <term><varname>Virtualization=</varname></term>
-          <listitem>
-            <para>Checks whether the system is executed in a virtualized
-            environment and optionally test whether it is a specific
-            implementation. See <literal>ConditionVirtualization=</literal> in
-            <citerefentry><refentrytitle>systemd.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry>
-            for details.</para>
-          </listitem>
-        </varlistentry>
-        <varlistentry>
-          <term><varname>KernelCommandLine=</varname></term>
-          <listitem>
-            <para>Checks whether a specific kernel command line option is
-            set (or if prefixed with the exclamation mark unset). See
-            <literal>ConditionKernelCommandLine=</literal> in
-            <citerefentry><refentrytitle>systemd.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry>
-            for details.</para>
-          </listitem>
-        </varlistentry>
-        <varlistentry>
-          <term><varname>Architecture=</varname></term>
-          <listitem>
-            <para>Checks whether the system is running on a specific
-            architecture. See <literal>ConditionArchitecture=</literal> in
-            <citerefentry><refentrytitle>systemd.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry>
-            for details.</para>
-          </listitem>
-        </varlistentry>
-      </variablelist>
-
-      <para>The <literal>[Link]</literal> section accepts the following keys:</para>
-
-      <variablelist class='network-directives'>
-        <varlistentry>
-          <term><varname>Description=</varname></term>
-          <listitem>
-            <para>A description of the device.</para>
-          </listitem>
-        </varlistentry>
-        <varlistentry>
-          <term><varname>Alias=</varname></term>
-          <listitem>
-            <para>The <literal>ifalias</literal> is set to this value.</para>
-          </listitem>
-        </varlistentry>
-        <varlistentry>
-          <term><varname>MACAddressPolicy=</varname></term>
-          <listitem>
-            <para>The policy by which the MAC address should be set. The
-              available policies are:
-            </para>
-            <variablelist>
-              <varlistentry>
-                <term><literal>persistent</literal></term>
-                <listitem>
-                  <para>If the hardware has a persistent MAC address, as most
-                    hardware should, and this is used by the kernel, nothing is
-                    done. Otherwise, a new MAC address is generated which is
-                    guaranteed to be the same on every boot for the given
-                    machine and the given device, but which is otherwise random.
-                  </para>
-                </listitem>
-              </varlistentry>
-              <varlistentry>
-                <term><literal>random</literal></term>
-                <listitem>
-                  <para>If the kernel is using a random MAC address, nothing is
-                    done. Otherwise, a new address is randomly generated each
-                    time the device appears, typically at boot.
-                  </para>
-                </listitem>
-              </varlistentry>
-            </variablelist>
-          </listitem>
-        </varlistentry>
-        <varlistentry>
-          <term><varname>MACAddress=</varname></term>
-          <listitem>
-            <para>The MAC address to use, if no <literal>MACAddressPolicy=</literal>
-              is specified.
-            </para>
-          </listitem>
-        </varlistentry>
-        <varlistentry>
-          <term><varname>NamePolicy=</varname></term>
-          <listitem>
-            <para>An ordered, space-separated list of policies by which the
-              interface name should be set. <literal>NamePolicy</literal> may
-              be disabled by specifying <literal>net.ifnames=0</literal> on the
-              kernel commandline. Each of the policies may fail, and the first
-              successful one is used. The name is not set directly, but
-              is exported to udev as the property <literal>ID_NET_NAME</literal>,
-              which is, by default, used by a udev rule to set
-              <literal>NAME</literal>. The available policies are:
-            </para>
-            <variablelist>
-              <varlistentry>
-                <term><literal>database</literal></term>
-                <listitem>
-                  <para>The name is set based on entries in the Hardware
-                    Database with the key
-                    <literal>ID_NET_NAME_FROM_DATABASE</literal>.
-                  </para>
-                </listitem>
-              </varlistentry>
-              <varlistentry>
-                <term><literal>onboard</literal></term>
-                <listitem>
-                  <para>The name is set based on information given by the
-                    firmware for on-board devices, as exported by the udev
-                    property <literal>ID_NET_NAME_ONBOARD</literal>.
-                  </para>
-                </listitem>
-              </varlistentry>
-              <varlistentry>
-                <term><literal>slot</literal></term>
-                <listitem>
-                  <para>The name is set based on information given by the
-                    firmware for hot-plug devices, as exported by the udev
-                    property <literal>ID_NET_NAME_SLOT</literal>.
-                  </para>
-                </listitem>
-              </varlistentry>
-              <varlistentry>
-                <term><literal>path</literal></term>
-                <listitem>
-                  <para>The name is set based on the device's physical location,
-                    as exported by the udev property
-                    <literal>ID_NET_NAME_PATH</literal>.
-                  </para>
-                </listitem>
-              </varlistentry>
-              <varlistentry>
-                <term><literal>mac</literal></term>
-                <listitem>
-                  <para>The name is set based on the device's persistent MAC
-                    address, as exported by the udev property
-                    <literal>ID_NET_NAME_MAC</literal>.
-                  </para>
-                </listitem>
-              </varlistentry>
-            </variablelist>
-          </listitem>
-        </varlistentry>
-        <varlistentry>
-          <term><varname>Name=</varname></term>
-          <listitem>
-            <para>The interface name to use in case all the policies specified
-              in <varname>NamePolicy=</varname> fail, or in case
-              <varname>NamePolicy=</varname> is missing or disabled.
-            </para>
-          </listitem>
-        </varlistentry>
-        <varlistentry>
-          <term><varname>MTUBytes=</varname></term>
-          <listitem>
-            <para>The maximum transmission unit in bytes to set for
-            the device. The usual suffixes K, M, G, are supported and
-            are understood to the base of 1024.</para>
-          </listitem>
-        </varlistentry>
-        <varlistentry>
-          <term><varname>BitsPerSecond=</varname></term>
-          <listitem>
-            <para>The speed to set for the device, the value is
-            rounded down to the nearest Mbps. The usual suffixes K, M,
-            G, are supported and are understood to the base of
-            1000.</para>
-          </listitem>
-        </varlistentry>
-        <varlistentry>
-          <term><varname>Duplex=</varname></term>
-          <listitem>
-            <para>The duplex mode to set for the device. The accepted values
-              are <literal>half</literal> and <literal>full</literal>.
-            </para>
-          </listitem>
-        </varlistentry>
-        <varlistentry>
-          <term><varname>WakeOnLan=</varname></term>
-          <listitem>
-            <para>The Wake-on-LAN policy to set for the device. The supported
-              values are:
-            </para>
-            <variablelist>
-              <varlistentry>
-                <term><literal>phy</literal></term>
-                <listitem>
-                  <para>Wake on PHY activity.</para>
-                </listitem>
-              </varlistentry>
-              <varlistentry>
-                <term><literal>magic</literal></term>
-                <listitem>
-                  <para>Wake on receipt of a magic packet.</para>
-                </listitem>
-              </varlistentry>
-              <varlistentry>
-                <term><literal>off</literal></term>
-                <listitem>
-                  <para>Never wake.</para>
-                </listitem>
-              </varlistentry>
-            </variablelist>
-          </listitem>
-        </varlistentry>
-      </variablelist>
-  </refsect1>
-
   <refsect1>
     <title>See Also</title>
     <para>
@@ -1046,6 +771,9 @@
       <citerefentry>
         <refentrytitle>udevadm</refentrytitle><manvolnum>8</manvolnum>
       </citerefentry>
+      <citerefentry>
+        <refentrytitle>systemd.link</refentrytitle><manvolnum>5</manvolnum>
+      </citerefentry>
     </para>
   </refsect1>
 </refentry>