doc: add new vlan option in vhost sample guide

see commit: e3d61d1609cb9b3ea851c7776bfbb60dcfe8844a.

Signed-off-by: Changchun Ouyang <changchun.ouyang@intel.com>
Acked-by: Pablo de Lara <pablo.de.lara.guarch@intel.com>

diff --git a/doc/guides/sample_app_ug/vhost.rst b/doc/guides/sample_app_ug/vhost.rst
index 4a6d434..25d91bb 100644 (file)
--- a/doc/guides/sample_app_ug/vhost.rst
+++ b/doc/guides/sample_app_ug/vhost.rst
@@ -468,6 +468,14 @@ The value is 64 by default.
 
     user@target:~$ ./build/app/vhost-switch -c f -n 4 --huge-dir /mnt/huge -- --zero-copy 1 --tx-desc-num [0, n]
 
+**VLAN strip.**
+The VLAN strip option enable/disable the VLAN strip on host, if disabled, the guest will receive the packets with VLAN tag.
+It is enabled by default.
+
+.. code-block:: console
+
+    user@target:~$ ./build/app/vhost-switch -c f -n 4 --huge-dir /mnt/huge -- --vlan-strip [0, 1]
+
 Running the Virtual Machine (QEMU)
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