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Merge pull request #17680 from yuwata/udev-link-mac-address

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udev: to make MACAddress= take effect, MACAddressPolicy= must be "none"
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Lennart Poettering 2020-11-24 17:42:45 +01:00 committed by GitHub
commit 567fe1d570
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2 changed files with 20 additions and 6 deletions
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11
man/systemd.link.xml
View File

@ -273,18 +273,21 @@
<varlistentry>
<term><option>none</option></term>
<listitem>
<para>Keeps the MAC address assigned by the kernel.</para>
<para>Keeps the MAC address assigned by the kernel. Or use the MAC address specified in
<varname>MACAddress=</varname>.</para>
</listitem>
</varlistentry>
</variablelist>
<para>An empty string assignment is equivalent to setting <literal>none</literal>.</para>
</listitem>
</varlistentry>
<varlistentry>
<term><varname>MACAddress=</varname></term>
<listitem>
<para>The MAC address to use, if no
<varname>MACAddressPolicy=</varname>
is specified.</para>
<para>The interface MAC address to use. For this setting to take effect,
<varname>MACAddressPolicy=</varname> must either be unset, empty, or <literal>none</literal>.
</para>
</listitem>
</varlistentry>
<varlistentry>

15
src/udev/net/link-config.c
View File

@ -181,6 +181,13 @@ int link_load_one(link_config_ctx *ctx, const char *filename) {
return 0;
}
if (IN_SET(link->mac_address_policy, MAC_ADDRESS_POLICY_PERSISTENT, MAC_ADDRESS_POLICY_RANDOM) && link->mac) {
log_warning("%s: MACAddress= in [Link] section will be ignored when MACAddressPolicy= "
"is set to \"persistent\" or \"random\".",
filename);
link->mac = mfree(link->mac);
}
log_debug("Parsed configuration file %s", filename);
LIST_PREPEND(links, ctx->links, TAKE_PTR(link));
@ -668,8 +675,12 @@ static const char* const mac_address_policy_table[_MAC_ADDRESS_POLICY_MAX] = {
};
DEFINE_STRING_TABLE_LOOKUP(mac_address_policy, MACAddressPolicy);
DEFINE_CONFIG_PARSE_ENUM(config_parse_mac_address_policy, mac_address_policy, MACAddressPolicy,
"Failed to parse MAC address policy");
DEFINE_CONFIG_PARSE_ENUM_WITH_DEFAULT(
config_parse_mac_address_policy,
mac_address_policy,
MACAddressPolicy,
MAC_ADDRESS_POLICY_NONE,
"Failed to parse MAC address policy");
static const char* const name_policy_table[_NAMEPOLICY_MAX] = {
[NAMEPOLICY_KERNEL] = "kernel",