[dts] [PATCH v1] test_plans/virtio_event_idx: add test plan for virtio event idx interrupt mode test

[Yinan]

From: Wang Yinan <yinan.wang at intel.com>

Signed-off-by: Wang Yinan <yinan.wang at intel.com>
---
 test_plans/virtio_event_idx_test_plan.rst | 111 ++++++++++++++++++++++
 1 file changed, 111 insertions(+)
 create mode 100644 test_plans/virtio_event_idx_test_plan.rst

diff --git a/test_plans/virtio_event_idx_test_plan.rst b/test_plans/virtio_event_idx_test_plan.rst
new file mode 100644
index 0000000..6201c24
--- /dev/null
+++ b/test_plans/virtio_event_idx_test_plan.rst
@@ -0,0 +1,111 @@
+.. Copyright (c) <2019>, 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.
+
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+     distribution.
+
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+     from this software without specific prior written permission.
+
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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+   COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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+   ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+   OF THE POSSIBILITY OF SUCH DAMAGE.
+
+==========================
+virtio event idx test plan 
+==========================
+
+Description
+===========
+
+This feature is to suppress interrupts for performance improvement, need compare interrupt times with and without 
+virtio event idx enabled. Also need cover driver reload and live migration test.
+
+Test Case 1: Compare interrupt times with and without virtio event idx enabled
+==============================================================================
+
+1. Launch the vhost sample by below commands::
+
+    rm -rf vhost-net*
+    ./testpmd -c 0xF0000000 -n 4 --socket-mem 2048,2048 --legacy-mem --file-prefix=vhost --vdev 'net_vhost,iface=vhost-net,queues=1' -- -i --nb-cores=1 --txd=1024 --rxd=1024 
+    testpmd>start
+
+2. Launch VM::
+
+    taskset -c 32-33 \
+    qemu-system-x86_64 -name us-vhost-vm1 \
+     -cpu host -enable-kvm -m 2048 -object memory-backend-file,id=mem,size=2048M,mem-path=/mnt/huge,share=on -numa node,memdev=mem -mem-prealloc \
+     -smp cores=2,sockets=1 -drive file=/home/osimg/ubuntu16.img  \
+     -monitor unix:/tmp/vm2_monitor.sock,server,nowait -net nic,vlan=2,macaddr=00:00:00:08:e8:aa,addr=1f -net user,vlan=2,hostfwd=tcp:127.0.0.1:6004-:22 \
+     -chardev socket,id=char0,path=./vhost-net -netdev type=vhost-user,id=mynet1,chardev=char0,vhostforce \
+     -device virtio-net-pci,mac=52:54:00:00:00:01,netdev=mynet1,mrg_rxbuf=on,csum=on,gso=on,guest_csum=on,host_tso4=on,guest_tso4=on,guest_ecn=on \
+     -vnc :12 -daemonize
+
+3. On VM1, set virtio device IP and run arp protocal::
+
+    ifconfig ens3 1.1.1.2
+
+4. Send 10M packets from packet generator,check virtio-net interrupt times by cmd in VM::
+
+    cat /proc/interrupts
+
+5. Disable virtio event idx and rerun step1 ~ step4.  
+
+6. Compare interrupt times between virtio event_idx enabled and virtio event_idx disabled.
+
+Test Case 2: virtio-pci driver reload test
+==========================================
+
+1. Launch the vhost sample by below commands::
+
+    rm -rf vhost-net*
+    ./testpmd -c 0xF0000000 -n 4 --socket-mem 2048,2048 --legacy-mem --file-prefix=vhost --vdev 'net_vhost,iface=vhost-net,queues=1' -- -i --nb-cores=1 --txd=1024 --rxd=1024 
+    testpmd>start
+
+2. Launch VM::
+
+    taskset -c 32-33 \
+    qemu-system-x86_64 -name us-vhost-vm1 \
+     -cpu host -enable-kvm -m 2048 -object memory-backend-file,id=mem,size=2048M,mem-path=/mnt/huge,share=on -numa node,memdev=mem -mem-prealloc \
+     -smp cores=2,sockets=1 -drive file=/home/osimg/ubuntu16.img  \
+     -monitor unix:/tmp/vm2_monitor.sock,server,nowait -net nic,vlan=2,macaddr=00:00:00:08:e8:aa,addr=1f -net user,vlan=2,hostfwd=tcp:127.0.0.1:6004-:22 \
+     -chardev socket,id=char0,path=./vhost-net -netdev type=vhost-user,id=mynet1,chardev=char0,vhostforce \
+     -device virtio-net-pci,mac=52:54:00:00:00:01,netdev=mynet1,mrg_rxbuf=on,csum=on,gso=on,guest_csum=on,host_tso4=on,guest_tso4=on,guest_ecn=on \
+     -vnc :12 -daemonize
+
+3. On VM1, set virtio device IP, then check virtio device can receive packets::
+
+    ifconfig ens3 1.1.1.2
+    tcpdump -i ens3
+
+4. Reload virtio-net driver by below cmds::
+
+    ifconfig ens3 down
+    ./dpdk-devbind.py -u 00:03.0
+    ./dpdk-devbind.py -b virtio-pci 00:03.0
+
+5. Check virtio device can receive packets again::
+
+    ifconfig ens3 1.1.1.2
+    tcpdump -i ens3
+
+6. Rerun step4-step5 100 times to check event idx workable after driver reload.
-- 
2.17.1