Add doc for vlan= cmdline

Document vlan= cmdline in dracut.cmdline(7).

Cc: Dave Young <dyoung@redhat.com>
Cc: Harald Hoyer <harald@redhat.com>
Cc: Vivek Goyal <vgoyal@redhat.com>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>

diff --git a/dracut.cmdline.7.asc b/dracut.cmdline.7.asc
index 61cd139..95c6aea 100644 (file)
--- a/dracut.cmdline.7.asc
+++ b/dracut.cmdline.7.asc
@@ -304,6 +304,11 @@ auto6::: do IPv6 autoconfiguration
 **rd.neednet=1**::
     boolean, bring up network even without netroot set
 
+**vlan=_<vlanname>_:_<phydevice>_**::
+    Setup vlan device named <vlanname> on <phydeivce>.
+    We support the four styles of vlan names: VLAN_PLUS_VID (vlan0005), VLAN_PLUS_VID_NO_PAD (vlan5),
+    DEV_PLUS_VID (eth0.0005), DEV_PLUS_VID_NO_PAD (eth0.5)
+
 NFS
 ~~~
 **root=**[_<server-ip>_:]_<root-dir>_[:_<nfs-options>_]::