292. Power Negative Test Plan¶

292.1. Preparation work¶

Turn on Speedstep option in BIOS
Turn on CPU C3 and C6
Turn on Turbo in BIOS
Disable intel_pstate in Linux kernel command: intel_pstate=disable
modprobe msr module to let the application can get the CPU HW info
Let user space can control the CPU frequency: cpupower frequency-set -g userspace

292.2. Test Case1: Inject Malformed JSON Command file to fifo channel¶

Step 1. Create powermonitor fold for dpdk-vm_power_manager sample:

mkdir /tmp/powermonitor
chmod 777 /tmp/powermonitor

Step 2. Luanch VM power manager sample:

./<build_target>/examples/dpdk-vm_power_manager -l 1-3 -n 4 --file-prefix=test1 --no-pci

Step 3. Prepare policy in JSON format then send it to the fifo channel:

Prepare different command in JSON format then send it to the fifo channel Modify “name”, “resource_id”, “command” to large character string to check if the dpdk-vm_power_manager sample will crash For example:

{"policy": {
  "name": "01234567890123445678901234567890123456789001234567890",
  "command": "create",
  "policy_type": "WORKLOAD",
  "workload": "MEDIUM",
}}

Step 4. Send Json format command to the fifo channel:

cat command.json > /tmp/powermonitor/fifo22

Check point: no crash at the dpdk-vm_power_manager application side.

Potential issue: no warning for the user for the name too long, now is char[32], but no crash as strlcpy is uesed

292.3. Test Case2: Send invalid command through JSON channel¶

Step 1. Create powermonitor fold for dpdk-vm_power_manager sample:

mkdir /tmp/powermonitor
chmod 777 /tmp/powermonitor

Step 2. Luanch VM power manager sample:

./<build_target>/examples/dpdk-vm_power_manager -l 1-3 -n 4 --file-prefix=test1 --no-pci

Step 3. Prepare policy in JSON format then send it to the fifo channel:

Prepare invalid power command, for example, core list above the max core number. For example:

{"policy": {
    "name": "Ubutnu",
    "command": "create",
    "policy_type": "WORKLOAD",
    "workload": "MEDIUM_111",
}}

{"policy": {
    "name": "Ubutnu",
    "command": "create",
    "policy_type": "WORKLOAD_111",
    "workload": "MEDIUM",
}}

Step 4. Send Json format command to the fifo channel:

cat command.json > /tmp/powermonitor/fifo22

292.4. Test Case3: Check if host power APP have check point for the power policy sent from untrusted VM¶

Step 1. Launch VM by using libvirt, one NIC should be configured as PCI pass-throughput to the VM:

virsh start [VM name]

Note: For the VM xml file which will be used for creating the VM, it can re-use the vm0.xml generated in the branch ratio DTS script

Step 2. Luanch VM power manager sample on the host to monitor the channel from VM:

 ./<build_taget>/examples/dpdk-vm_power_manager -l 12-14 -n 4 --no-pci
   >　add_vm [vm name]
   >　add_channels [vm name] all
   >　set_channel_status [vm name] all enabled
   >　show_vm [vm name]

Check the invalid input command for dpdk-vm_power_manager sample::

 > add_channels ubuntu 128
 > add_channel ubuntu 10000000000000000

Check point:　No crash should be occur at dpdk-vm_power_manager sample

Step 3. In the VM, launch dpdk-guest_cli to set and send the power manager policy to the host power sample:

 ./<build_target>/examples/dpdk-guest_cli -c 0xff -n 4 -m 1024 --no-pci --file-prefix=yaolei \
   -- --vm-name=ubuntu --vcpu-list=0-7
   > set_cpu_freq 128 down
   > set_cpu_freq 1000000000000 down
   > set_cpu_freq -1 down

also try other commands::

  "<up|down|min|max|enable_turbo|disable_turbo>"

292.5. Test Case4: TRAFFIC Policy Test based on JSON configure file with large integer number¶

Step 1. Generate 1 VF under vfio-pci driver, launch dpdk-vm_power_manager sample with PF, for example:

echo 1 > /sys/bus/pci/drivers/vfio-pci/0000\:82\:00.0/max_vfs
./<build_target>/examples/dpdk-vm_power_manager -l 1-4 -n 4 --socket-mem=1024,1024 --file-prefix=test1 -a 82:00.0 -- -p 0x01

Step 2. Launch testpmd with VF:

./<build_target>/app/dpdk-testpmd  -l 5-6 -n 4 --socket-mem=1024,1024 --file-prefix=test2 -a 0000:82:02.0 -- -i
  > set fwd macswap
  > start

Step 3. Prepare traffic policy in JSON format then send it to the power demon sample, put the VF MAC into the mac_list:

{"policy": {
    "name": "ubuntu",
    "command": "create",
    "policy_type": "TRAFFIC",
    "max_packet_thresh": 500000000000000000000000000000,
    "avg_packet_thresh": 300000000000000000000000000000,
    "mac_list":[ "E0:E0:E0:E0:F0:F0"]
}}

Step 4. Send Json format command to the fifo channel:

cat traffic.json > /tmp/powermonitor/fifo6

Check point:　No crash should be occur at dpdk-vm_power_manager sample