about the new added attributes "check" and "type" for interface mac element

[Yalan Zhang]

Hi all,

I have done some tests for the new attributes "check" and "type", could you
please help to have a check?  And I have some questions about the patch,
please help to have a look, Thank you!

The questions:
1. in step 4 below, the error message should be updated:
Actual results:
XML error: invalid mac address **check** value: 'next'. Valid values are
"generated" and "static".
expected results:
XML error: invalid mac address **type** value: 'next'. Valid values are
"generated" and "static".

2. I have checked the vmware OUI definition and found this:
https://docs.vmware.com/en/VMware-vSphere/7.0/com.vmware.vsphere.networking.doc/GUID-1B6A280E-0C77-4775-8F84-4B3F40673178.html
it says the VMware OUI is 00:50:56, not 00:0c:29 in the patches.  Am I
missing something?

3. Could you please tell more about the user story? as I can not understand
the scenario when " it will ignore all the checks libvirt does about the
origin of the MAC address(whether or not it's in a VMWare OUI) and forward
the original one to the ESX server telling it not to check it either". Does
it happen when we try to transform a kvm guest to a vmware guest?

4. How to test it as a libvirt QE? Are the test scenarios below enough
without ESX env?


Test steps:

1. Start vm with different configuration with mac in "00:0c:29" range:
# virsh dumpxml rhel | grep /interface -B12
...
<interface type='network'>
      <mac address='00:0c:29:e7:9b:cb' type='generated' check='yes'/>
      <source network='default'/>
      <model type='virtio'/>
      <address type='pci' domain='0x0000' bus='0x04' slot='0x00'
function='0x0'/>
    </interface>
    <interface type='network'>
      <mac address='00:0c:29:3b:e0:50' type='static' check='no'/>
      <source network='default'/>
      <model type='virtio'/>
      <address type='pci' domain='0x0000' bus='0x0d' slot='0x00'
function='0x0'/>
    </interface>
    <interface type='network'>
      <mac address='00:0c:29:73:f6:dc' type='generated' check='no'/>
      <source network='default'/>
      <model type='virtio'/>
      <address type='pci' domain='0x0000' bus='0x0e' slot='0x00'
function='0x0'/>
    </interface>
    <interface type='network'>
      <mac address='00:0c:29:aa:dc:6c' type='static' check='yes'/>
      <source network='default'/>
      <model type='virtio'/>
      <address type='pci' domain='0x0000' bus='0x0f' slot='0x00'
function='0x0'/>
    </interface>

# virsh start rhel
Domain rhel started

2. login guest and check the interfaces:
# ip addr
...
2: enp5s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state
UP group default qlen 1000
    link/ether 00:0c:29:e7:9b:cb brd ff:ff:ff:ff:ff:ff
    inet 192.168.122.142/24 brd 192.168.122.255 scope global dynamic
noprefixroute enp5s0
       valid_lft 3584sec preferred_lft 3584sec
    inet6 fe80::351c:686a:863e:4a7f/64 scope link noprefixroute
       valid_lft forever preferred_lft forever
3: enp11s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state
UP group default qlen 1000
    link/ether 00:0c:29:3b:e0:50 brd ff:ff:ff:ff:ff:ff
    inet 192.168.122.202/24 brd 192.168.122.255 scope global dynamic
noprefixroute enp11s0
       valid_lft 3584sec preferred_lft 3584sec
    inet6 fe80::2b79:4675:6c59:6822/64 scope link noprefixroute
       valid_lft forever preferred_lft forever
4: enp12s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state
UP group default qlen 1000
    link/ether 00:0c:29:73:f6:dc brd ff:ff:ff:ff:ff:ff
    inet 192.168.122.33/24 brd 192.168.122.255 scope global dynamic
noprefixroute enp12s0
       valid_lft 3584sec preferred_lft 3584sec
    inet6 fe80::e43d:555:ba85:4030/64 scope link noprefixroute
       valid_lft forever preferred_lft forever
5: enp13s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state
UP group default qlen 1000
    link/ether 00:0c:29:aa:dc:6c brd ff:ff:ff:ff:ff:ff
    inet 192.168.122.161/24 brd 192.168.122.255 scope global dynamic
noprefixroute enp13s0
       valid_lft 3584sec preferred_lft 3584sec
    inet6 fe80::f32d:e2e8:9c8b:47fd/64 scope link noprefixroute
       valid_lft forever preferred_lft forever


3. start vm without the "check" and "type" attributes, and check the live
xml do not include these attributes, either.
 # virsh start vm1
virshDomain vm1 started
# virsh dumpxml vm1 | grep /interface -B8
    </controller>
    <interface type='network'>
      <mac address='52:54:00:bb:cd:89'/>
      <source network='default'
portid='b02dc78f-69ad-4db7-870c-f371fd730537' bridge='virbr0'/>
      <target dev='vnet22'/>
      <model type='virtio'/>
      <alias name='net0'/>
      <address type='pci' domain='0x0000' bus='0x01' slot='0x00'
function='0x0'/>
    </interface>

4. negative test:
Set "<mac address='52:54:00:bb:cd:89' type='next'/>" in virsh edit
# virsh edit vm1
error: XML document failed to validate against schema: Unable to validate
doc against /usr/share/libvirt/schemas/domain.rng
Extra element devices in interleave
Element domain failed to validate content

Failed. Try again? [y,n,i,f,?]:   ----> press 'i'
error: XML error: invalid mac address check value: 'next'. Valid values are
"generated" and "static".
Failed. Try again? [y,n,f,?]:


-------
Best Regards,
Yalan Zhang
IRC: yalzhang
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