same name pointing to <filename>/dev/null</filename> disables the
configuration file entirely (it is "masked").</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, as well as 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. Note
- that a default file <filename>99-default.link</filename> is
- shipped by the system. Any user-supplied
- <filename>.link</filename> should hence have a lexically earlier
- name to be considered at all.</para>
-
- <para>See
- <citerefentry><refentrytitle>udevadm</refentrytitle><manvolnum>8</manvolnum></citerefentry>
- for diagnosing problems with <filename>.link</filename> files.</para>
+ <para>The link file contains a [Match] section, which determines if a given link file may be applied to a
+ given device, as well as a [Link] section specifying how the device should be configured. The first (in
+ lexical order) of the link files that matches a given device is applied. Note that a default file
+ <filename>99-default.link</filename> is shipped by the system. Any user-supplied
+ <filename>.link</filename> should hence have a lexically earlier name to be considered at all.</para>
+
+ <para>See <citerefentry><refentrytitle>udevadm</refentrytitle><manvolnum>8</manvolnum></citerefentry> for
+ diagnosing problems with <filename>.link</filename> files.</para>
</refsect1>
<refsect1>
<title>[Match] Section Options</title>
- <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>
+ <para>A link file is said to match a device if each of the entries in the [Match] section matches, or if
+ the section is empty. The following keys are accepted:</para>
<variablelist class='network-directives'>
<varlistentry>
<listitem>
<para>A whitespace-separated list of shell-style globs matching
the persistent path, as exposed by the udev property
- <literal>ID_PATH</literal>.</para>
+ <varname>ID_PATH</varname>.</para>
</listitem>
</varlistentry>
<varlistentry>
<term><varname>Driver=</varname></term>
<listitem>
- <para>A whitespace-separated list of shell-style globs matching
- 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>
+ <para>A whitespace-separated list of shell-style globs matching the driver currently bound to the
+ device, as exposed by the udev property <varname>DRIVER</varname> of its parent device, or if that
+ is not set, the driver as exposed by <command>ethtool -i</command> of the device itself.</para>
</listitem>
</varlistentry>
<varlistentry>
<listitem>
<para>A whitespace-separated list of shell-style globs matching
the device type, as exposed by the udev
- property <literal>DEVTYPE</literal>.</para>
+ property <varname>DEVTYPE</varname>.</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
+ ID of the host. See <varname>ConditionHost=</varname> in
<citerefentry><refentrytitle>systemd.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry>
for details.</para>
</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
+ <varname>ConditionVirtualization=</varname> in
<citerefentry><refentrytitle>systemd.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry>
for details.</para>
</listitem>
<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
+ <varname>ConditionKernelCommandLine=</varname> in
<citerefentry><refentrytitle>systemd.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry>
for details.</para>
</listitem>
<listitem>
<para>Checks whether the kernel version (as reported by <command>uname -r</command>) matches a certain
expression (or if prefixed with the exclamation mark does not match it). See
- <literal>ConditionKernelVersion=</literal> in
+ <varname>ConditionKernelVersion=</varname> in
<citerefentry><refentrytitle>systemd.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry> for
details.
</para>
<term><varname>Architecture=</varname></term>
<listitem>
<para>Checks whether the system is running on a specific
- architecture. See <literal>ConditionArchitecture=</literal>
+ architecture. See <varname>ConditionArchitecture=</varname>
in
<citerefentry><refentrytitle>systemd.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry>
for details.</para>
<refsect1>
<title>[Link] Section Options</title>
- <para>The <literal>[Link]</literal> section accepts the following
+ <para>The [Link] section accepts the following
keys:</para>
<variablelist class='network-directives'>
<varlistentry>
<term><varname>Alias=</varname></term>
<listitem>
- <para>The <literal>ifalias</literal> is set to this
- value.</para>
+ <para>The <varname>ifalias</varname> interface property is set to this value.</para>
</listitem>
</varlistentry>
<varlistentry>
<variablelist>
<varlistentry>
- <term><literal>persistent</literal></term>
+ <term><option>persistent</option></term>
<listitem>
<para>If the hardware has a persistent MAC address, as
most hardware should, and if it is used by the kernel,
</listitem>
</varlistentry>
<varlistentry>
- <term><literal>random</literal></term>
+ <term><option>random</option></term>
<listitem>
<para>If the kernel is using a random MAC address,
nothing is done. Otherwise, a new address is randomly
</listitem>
</varlistentry>
<varlistentry>
- <term><literal>none</literal></term>
+ <term><option>none</option></term>
<listitem>
<para>Keeps the MAC address assigned by the kernel.</para>
</listitem>
<term><varname>MACAddress=</varname></term>
<listitem>
<para>The MAC address to use, if no
- <literal>MACAddressPolicy=</literal>
+ <varname>MACAddressPolicy=</varname>
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 command line.
- 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>. If the name has already been set by
- userspace, no renaming is performed. The available policies
- are:</para>
+ <para>An ordered, space-separated list of policies by which the interface name should be set.
+ <varname>NamePolicy=</varname> may be disabled by specifying <option>net.ifnames=0</option> on the
+ kernel command line. 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 <option>ID_NET_NAME</option>, which
+ is, by default, used by a udev rule to set <varname>NAME</varname>. The available policies are:
+ </para>
<variablelist>
<varlistentry>
- <term><literal>kernel</literal></term>
+ <term><option>kernel</option></term>
<listitem>
<para>If the kernel claims that the name it has set
for a device is predictable, then no renaming is
</listitem>
</varlistentry>
<varlistentry>
- <term><literal>database</literal></term>
+ <term><option>database</option></term>
<listitem>
<para>The name is set based on entries in the udev's
Hardware Database with the key
- <literal>ID_NET_NAME_FROM_DATABASE</literal>.
+ <varname>ID_NET_NAME_FROM_DATABASE</varname>.
</para>
</listitem>
</varlistentry>
<varlistentry>
- <term><literal>onboard</literal></term>
+ <term><option>onboard</option></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>.
+ udev property <varname>ID_NET_NAME_ONBOARD</varname>.
</para>
</listitem>
</varlistentry>
<varlistentry>
- <term><literal>slot</literal></term>
+ <term><option>slot</option></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>.
+ udev property <varname>ID_NET_NAME_SLOT</varname>.
</para>
</listitem>
</varlistentry>
<varlistentry>
- <term><literal>path</literal></term>
+ <term><option>path</option></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>
+ <varname>ID_NET_NAME_PATH</varname>.</para>
</listitem>
</varlistentry>
<varlistentry>
- <term><literal>mac</literal></term>
+ <term><option>mac</option></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>
+ <varname>ID_NET_NAME_MAC</varname>.</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><option>keep</option></term>
+ <listitem>
+ <para>If the device already had a name given by userspace (as part of creation of the device
+ or a rename), keep it.</para>
</listitem>
</varlistentry>
</variablelist>
<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>
+ <para>The duplex mode to set for the device. The accepted values are <option>half</option> and
+ <option>full</option>.</para>
</listitem>
</varlistentry>
<varlistentry>
common transmission parameters, such as speed, duplex mode, and flow control.
When unset, the kernel's default will be used.</para>
- <para>Note that if autonegotiation is enabled, speed, duplex and advertise settings are
- read-only. If autonegotation is disabled, speed, duplex and advertise settings are writable
+ <para>Note that if autonegotiation is enabled, speed and duplex settings are
+ read-only. If autonegotation is disabled, speed and duplex settings are writable
if the driver supports multiple link modes.</para>
</listitem>
</varlistentry>
<variablelist>
<varlistentry>
- <term><literal>phy</literal></term>
+ <term><option>phy</option></term>
<listitem>
<para>Wake on PHY activity.</para>
</listitem>
</varlistentry>
<varlistentry>
- <term><literal>unicast</literal></term>
+ <term><option>unicast</option></term>
<listitem>
<para>Wake on unicast messages.</para>
</listitem>
</varlistentry>
<varlistentry>
- <term><literal>multicast</literal></term>
+ <term><option>multicast</option></term>
<listitem>
<para>Wake on multicast messages.</para>
</listitem>
</varlistentry>
<varlistentry>
- <term><literal>broadcast</literal></term>
+ <term><option>broadcast</option></term>
<listitem>
<para>Wake on broadcast messages.</para>
</listitem>
</varlistentry>
<varlistentry>
- <term><literal>arp</literal></term>
+ <term><option>arp</option></term>
<listitem>
<para>Wake on ARP.</para>
</listitem>
</varlistentry>
<varlistentry>
- <term><literal>magic</literal></term>
+ <term><option>magic</option></term>
<listitem>
<para>Wake on receipt of a magic packet.
</para>
</listitem>
</varlistentry>
<varlistentry>
- <term><literal>secureon</literal></term>
+ <term><option>secureon</option></term>
<listitem>
<para>Enable secureon(tm) password for MagicPacket(tm).
</para>
</listitem>
</varlistentry>
<varlistentry>
- <term><literal>off</literal></term>
+ <term><option>off</option></term>
<listitem>
<para>Never wake.</para>
</listitem>
</varlistentry>
</variablelist>
- <para>Defaults to <literal>off</literal>.</para>
+ <para>Defaults to <option>off</option>.</para>
</listitem>
</varlistentry>
<varlistentry>
<variablelist>
<varlistentry>
- <term><literal>tp</literal></term>
+ <term><option>tp</option></term>
<listitem>
<para>An Ethernet interface using Twisted-Pair cable as the medium.</para>
</listitem>
</varlistentry>
<varlistentry>
- <term><literal>aui</literal></term>
+ <term><option>aui</option></term>
<listitem>
<para>Attachment Unit Interface (AUI). Normally used with hubs.
</para>
</listitem>
</varlistentry>
<varlistentry>
- <term><literal>bnc</literal></term>
+ <term><option>bnc</option></term>
<listitem>
<para>An Ethernet interface using BNC connectors and co-axial cable.</para>
</listitem>
</varlistentry>
<varlistentry>
- <term><literal>mii</literal></term>
+ <term><option>mii</option></term>
<listitem>
<para>An Ethernet interface using a Media Independent Interface (MII).</para>
</listitem>
</varlistentry>
<varlistentry>
- <term><literal>fibre</literal></term>
+ <term><option>fibre</option></term>
<listitem>
<para>An Ethernet interface using Optical Fibre as the medium.</para>
</listitem>
<term><varname>Advertise=</varname></term>
<listitem>
<para>This sets what speeds and duplex modes of operation are advertised for auto-negotiation.
- The supported values are:
+ This implies <literal>AutoNegotiation=yes</literal>. The supported values are:
<table>
<title>Supported advertise values</title>
<entry>Duplex Mode</entry>
</row></thead>
<tbody>
-
- <row><entry><literal>10baset-half</literal></entry>
+ <row><entry><option>10baset-half</option></entry>
<entry>10</entry><entry>half</entry></row>
- <row><entry><literal>10baset-full</literal></entry>
+ <row><entry><option>10baset-full</option></entry>
<entry>10</entry><entry>full</entry></row>
- <row><entry><literal>100baset-half</literal></entry>
+ <row><entry><option>100baset-half</option></entry>
<entry>100</entry><entry>half</entry></row>
- <row><entry><literal>100baset-full</literal></entry>
+ <row><entry><option>100baset-full</option></entry>
<entry>100</entry><entry>full</entry></row>
- <row><entry><literal>1000baset-half</literal></entry>
+ <row><entry><option>1000baset-half</option></entry>
<entry>1000</entry><entry>half</entry></row>
- <row><entry><literal>1000baset-full</literal></entry>
+ <row><entry><option>1000baset-full</option></entry>
<entry>1000</entry><entry>full</entry></row>
- <row><entry><literal>10000baset-full</literal></entry>
+ <row><entry><option>10000baset-full</option></entry>
<entry>10000</entry><entry>full</entry></row>
- <row><entry><literal>2500basex-full</literal></entry>
+ <row><entry><option>2500basex-full</option></entry>
<entry>2500</entry><entry>full</entry></row>
- <row><entry><literal>1000basekx-full</literal></entry>
+ <row><entry><option>1000basekx-full</option></entry>
<entry>1000</entry><entry>full</entry></row>
- <row><entry><literal>10000basekx4-full</literal></entry>
+ <row><entry><option>10000basekx4-full</option></entry>
<entry>10000</entry><entry>full</entry></row>
- <row><entry><literal>10000basekr-full</literal></entry>
+ <row><entry><option>10000basekr-full</option></entry>
<entry>10000</entry><entry>full</entry></row>
- <row><entry><literal>10000baser-fec</literal></entry>
+ <row><entry><option>10000baser-fec</option></entry>
<entry>10000</entry><entry>full</entry></row>
- <row><entry><literal>20000basemld2-full</literal></entry>
+ <row><entry><option>20000basemld2-full</option></entry>
<entry>20000</entry><entry>full</entry></row>
- <row><entry><literal>20000basekr2-full</literal></entry>
+ <row><entry><option>20000basekr2-full</option></entry>
<entry>20000</entry><entry>full</entry></row>
</tbody>
</tgroup>
projects / thirdparty / systemd.git / blobdiff