Hi,

I was playing with the nodedev-dumpxml to see the supported offload NIC capabilities, and

It seem that if I disable one of offloading capabilities using ethtool command nodedev-dumpxml it still return

the feature as enabled. To get the correct offloading capabilities I have to restart libvirtd.

I was wandering if that is an expected behavior in lbivirt .

Please see example below with the rx capabilities disabled.

virsh # nodedev-dumpxml net_enp4s0_f4_52_14_11_73_81

<device>                                           

  <name>net_enp4s0_f4_52_14_11_73_81</name>        

  <path>/sys/devices/pci0000:00/0000:00:02.0/0000:04:00.0/net/enp4s0</path>

  <parent>pci_0000_04_00_0</parent>                                        

  <capability type='net'>                                                 

    <interface>enp4s0</interface>                                         

    <address>f4:52:14:11:73:81</address>                                  

    <link speed='40000' state='up'/>                                      

    <feature name='rx'/>                                                  

    <feature name='tx'/>                                                  

    <feature name='sg'/>                                                   

    <feature name='tso'/>                                                 

    <feature name='gso'/>                                                 

    <feature name='gro'/>                                                 

    <feature name='rxvlan'/>                                              

    <feature name='txvlan'/>                                              

    <feature name='rxhash'/>                                                                                   

    <capability type='80203'/>                                            

  </capability>                                                            

</device>            

ethtool -K enp4s0 rx off

virsh # nodedev-dumpxml net_enp4s0_f4_52_14_11_73_81

<device>                                           

  <name>net_enp4s0_f4_52_14_11_73_81</name>        

  <path>/sys/devices/pci0000:00/0000:00:02.0/0000:04:00.0/net/enp4s0</path>

  <parent>pci_0000_04_00_0</parent>                                       

  <capability type='net'>                                                 

    <interface>enp4s0</interface>                                          

    <address>f4:52:14:11:73:81</address>                                  

    <link speed='40000' state='up'/>                                      

    <feature name='rx'/>                                                  

    <feature name='tx'/>                                                  

    <feature name='sg'/>                                                  

    <feature name='tso'/>                                                 

    <feature name='gso'/>                                                  

    <feature name='gro'/>                                                 

    <feature name='rxvlan'/>                                              

    <feature name='txvlan'/>                                               

    <feature name='rxhash'/>                                                                                         

    <capability type='80203'/>                                            

  </capability>                                                           

</device>

virsh #

[root@r-ae-host05 bin]# ps -ef | grep libvirt

root     16743 23086  0 16:43 pts/2    00:00:00 ../sbin/libvirtd

root     17440 23086  0 16:47 pts/2    00:00:00 grep --color=auto libvirt

[root@r-ae-host05 bin]# kill 16743

[root@r-ae-host05 bin]# ../sbin/libvirtd &

[2] 17489

[1]   Done                    ../sbin/libvirtd

[root@r-ae-host05 bin]#

[root@r-ae-host05 bin]#

[root@r-ae-host05 bin]# ./virsh

virsh # nodedev-dumpxml net_enp4s0_f4_52_14_11_73_81

<device>

  <name>net_enp4s0_f4_52_14_11_73_81</name>

  <path>/sys/devices/pci0000:00/0000:00:02.0/0000:04:00.0/net/enp4s0</path>

  <parent>pci_0000_04_00_0</parent>

  <capability type='net'>

    <interface>enp4s0</interface>

    <address>f4:52:14:11:73:81</address>

    <link speed='40000' state='up'/>

    <feature name='tx'/>

    <feature name='sg'/>

    <feature name='tso'/>

    <feature name='gso'/>

    <feature name='gro'/>

    <feature name='rxvlan'/>

    <feature name='txvlan'/>

    <feature name='rxhash'/>

    <feature name='rdma'/>

    <capability type='80203'/>

  </capability>

</device>

Thanks,

                Moshe Levi.