[dts] [PATCH 6/7] test_plans: add test plan for vhost_user_live_migration suite

[Marvin Liu <yong.liu@intel.com>]

Signed-off-by: Marvin Liu <yong.liu@intel.com>

diff --git a/test_plans/vhost_user_live_migration_test_plan.rst b/test_plans/vhost_user_live_migration_test_plan.rst
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+.. Copyright (c) <2016>, 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
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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.
+
+==============================
+DPDK vhost user live migration
+==============================
+This feature is to make sure vhost user live migration works based on vhost-switch.
+
+Prerequisites
+-------------
+Connect three ports to one switch, these three ports are from Host, Backup
+host and tester.
+
+Start nfs service and export nfs to backup host IP:
+    host# service rpcbind start
+	host# service nfs start
+	host# cat /etc/exports
+    host# /home/vm-image backup-host-ip(rw,sync,no_root_squash)
+
+Make sure host nfsd module updated to v4 version(v2 not support file > 4G)
+
+Create enough hugepages for vhost-switch and qemu backend memory.
+    host# echo 4096 > /sys/kernel/mm/hugepages/hugepages-2048kB/nr_hugepages
+    host# mount -t hugetlbfs hugetlbfs /mnt/huge
+
+Bind host port to igb_uio and start vhost switch:
+    host# vhost-switch -c f -n 4 --socket-mem 1024 -- -p 0x1
+
+Start host qemu process:
+	host# qemu-system-x86_64 -name host -enable-kvm -m 2048 \
+	-drive file=/home/vm-image/vm0.img,format=raw \
+	-serial telnet:localhost:5556,server,nowait \
+	-cpu host -smp 4 \
+	-net nic,model=e1000 \
+	-net user,hostfwd=tcp:127.0.0.1:5555-:22 \
+	-chardev socket,id=char1,path=/root/dpdk_org/vhost-net \
+	-netdev type=vhost-user,id=mynet1,chardev=char1,vhostforce \
+	-device virtio-net-pci,mac=00:00:00:00:00:01,netdev=mynet1 \
+	-object memory-backend-file,id=mem,size=2048M,mem-path=/mnt/huge,share=on \
+	-numa node,memdev=mem -mem-prealloc \
+	-monitor unix:/tmp/host.sock,server,nowait \
+	-daemonize
+
+Wait for virtual machine start up and up virtIO interface:
+	host-vm# ifconfig eth1 up
+
+Check vhost-switch connected and send packet with mac+vlan can received by
+virtIO interface in VM:
+	VHOST_DATA: (0) mac 00:00:00:00:00:01 and vlan 1000 registered
+
+Mount host nfs folder on backup host: 
+	backup# mount -t nfs -o nolock,vers=4  host-ip:/home/vm-image /mnt/nfs
+
+Create enough hugepages for vhost-switch and qemu backend memory.
+    backup# echo 4096 > /sys/kernel/mm/hugepages/hugepages-2048kB/nr_hugepages
+    backup# mount -t hugetlbfs hugetlbfs /mnt/huge
+
+Bind backup host port to igb_uio and start vhost switch:
+    backup# vhost-switch -c f -n 4 --socket-mem 1024 -- -p 0x1
+
+Start backup host qemu with additional parameter:
+	-incoming tcp:0:4444
+
+Test Case 1: migrate with kernel driver
+=======================================
+Make sure all Prerequisites has been done
+1. Login into host virtual machine and capture incoming packets.
+	host# telnet localhost 5556
+	host vm# ifconfig eth1 up
+
+2. Send continous packets with mac(00:00:00:00:00:01) and vlan(1000)
+from tester port:
+	tester# scapy
+	tester# p = Ether(dst="00:00:00:00:00:01")/Dot1Q(vlan=1000)/IP()/UDP()/
+	            Raw('x'*20)
+	tester# sendp(p, iface="p5p1", inter=1, loop=1)
+
+3. Check packet normally recevied by virtIO interface
+	host vm# tcpdump -i eth1 -xxx
+
+4. Connect to qemu monitor session and start migration
+	host# nc -U /tmp/host.sock
+    host# (qemu)migrate -d tcp:backup host ip:4444
+
+5. Check host vm can receive packet before migration done
+
+6. Query stats of migrate in monitor, check status of migration
+    host# (qemu)info migrate
+    host# after finished:	
+
+7. After migartion done, login into backup vm and re-enable virtIO interface
+	backup vm# ifconfig eth1 down
+	backup vm# ifconfig eth1 up	
+
+8. Check backup host reconnected and packet normally recevied
+
+Test Case 2: migrate with dpdk
+==============================
+Make sure all Prerequisites has been done
+1. Send continous packets with mac(00:00:00:00:00:01) and vlan(1000)
+	tester# scapy
+	tester# p = Ether(dst="00:00:00:00:00:01")/Dot1Q(vlan=1000)/IP()/UDP()/
+	            Raw('x'*20)
+	tester# sendp(p, iface="p5p1", inter=1, loop=1)
+
+2. bind virtIO interface to igb_uio and start testpmd
+	host vm# testpmd -c 0x7 -n 4
+
+3. Check packet normally recevied by testpmd:
+	host vm# testpmd> set fwd rxonly
+	host vm# testpmd> set verbose 1
+	host vm# testpmd> port 0/queue 0: received 1 packets
+
+4. Connect to qemu monitor session and start migration
+	host# nc -U /tmp/host.sock
+    host# (qemu)migrate -d tcp:backup host ip:4444
+
+5. Check host vm can receive packet before migration done
+
+6. Query stats of migrate in monitor, check status of migration
+    host# (qemu)info migrate
+    host# after finished:	
+
+7. After migartion done, login into backup vm and check packets recevied
+	backup vm# testpmd> port 0/queue 0: received 1 packets
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