[dts] [PATCH V1] Add test plan about vhost qemu mtu

[lihong <lihongx.ma@intel.com>]

Signed-off-by: lihong <lihongx.ma@intel.com>
---
 test_plans/vhost_qemu_mtu_test_plan.rst | 83 +++++++++++++++++++++++++++++++++
 1 file changed, 83 insertions(+)
 create mode 100644 test_plans/vhost_qemu_mtu_test_plan.rst

diff --git a/test_plans/vhost_qemu_mtu_test_plan.rst b/test_plans/vhost_qemu_mtu_test_plan.rst
new file mode 100644
index 0000000..d7f01ee
--- /dev/null
+++ b/test_plans/vhost_qemu_mtu_test_plan.rst
@@ -0,0 +1,83 @@
+.. Copyright (c) <2018>, Intel Corporation
+   All rights reserved.
+
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions
+   are met:
+
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+     notice, this list of conditions and the following disclaimer.
+
+   - Redistributions in binary form must reproduce the above copyright
+     notice, this list of conditions and the following disclaimer in
+     the documentation and/or other materials provided with the
+     distribution.
+
+   - Neither the name of Intel Corporation nor the names of its
+     contributors may be used to endorse or promote products derived
+     from this software without specific prior written permission.
+
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+   FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+   COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+   INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+   (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+   SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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+   STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+   ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+   OF THE POSSIBILITY OF SUCH DAMAGE.
+
+===================
+Vhost MTU Test Plan
+===================
+
+The feature test the setting of MTU value of virtio-net and kernel driver.
+
+Prerequisites:
+==============
+
+The guests kernel should grand than 4.10
+The qemu version should greater or equal to 2.9
+
+Test Case: Test the MTU in virtio-net
+=====================================
+1. Launch the testpmd by below commands on host, and config mtu::
+
+    ./testpmd -c 0xc -n 4 --socket-mem 2048,2048 \
+    --vdev 'net_vhost0,iface=vhost-net,queues=1' \
+    -- -i --txd=512 --rxd=128 --nb-cores=1 --port-topology=chained
+    testpmd> set fwd mac
+    testpmd> start
+
+2. Launch VM::
+
+    Use the qemu_2.9 or qemu 2.10 to start the VM and the VM kernel should
+    grand than 4.10, set the mtu value to 9000
+
+    qemu-system-x86_64 \
+    -chardev socket,id=char0,path=./vhost-net \
+    -netdev type=vhost-user,id=netdev0,chardev=char0,vhostforce \
+    -device virtio-net-pci,netdev=netdev0,mrg_rxbuf=on,host_mtu=9000
+
+3. Check the MTU value in VM::
+
+    Use the ifconfig command to check the MTU value of
+    virtio kernel driver is 9000 in VM.
+
+4. Bind the virtio driver to igb_uio, launch testpmd in VM, and verify 
+   the mtu in port info is 9000::
+ 
+    ./testpmd -c 0x03 -n 3 \
+    -- -i --txd=512 --rxd=128 --tx-offloads=0x0 --enable-hw-vlan-strip
+    testpmd> set fwd mac
+    testpmd> start
+    testpmd> show port info 0
+
+5. Check the MTU value of virtio in testpmd on host is 9000::
+    testpmd> show port info 1
+
+6. Repeat the step 2 ~ 5, change the mtu value to 68, 65535(the minimal value
+   and maximum value), verify the value is changed.
-- 
2.7.4