[dpdk-dev] [PATCH] doc: New option for vhost sample

[Ouyang Changchun]

Since codes for this new option(--vlan-strip) are already merged into mainline,
see: commit: e3d61d1609cb9b3ea851c7776bfbb60dcfe8844a.

So the doc need update for that.

Signed-off-by: Changchun Ouyang <changchun.ouyang at intel.com>
---
 doc/guides/sample_app_ug/vhost.rst | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/doc/guides/sample_app_ug/vhost.rst b/doc/guides/sample_app_ug/vhost.rst
index 76997da..b97ca6d 100644
--- 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 at 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 at target:~$ ./build/app/vhost-switch -c f -n 4 --huge-dir /mnt/huge -- --vlan-strip [0, 1]
+
 Running the Virtual Machine (QEMU)
 ----------------------------------
 
-- 
1.8.4.2