[ovs-discuss] IS H/w offload supported for KVM in Openvswitch

[Amit Tewari]

Hi,

 

I wanted to know whether H/w offload feature like tx_checksum and
tcp_segmentation offload is supported for KVM in openvswitch ? 

 

 

i saw this line of code in checksum.h

#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,22) || (defined(CONFIG_XEN)
&& defined(HAVE_PROTO_DATA_VALID)) 

#define NEED_CSUM_NORMALIZE

#endif

 

My Linux machine -kernel version is 2.6.38 and I am using KVM, so I
think this flag will not be defined on my setup. 

 

My test -environment

Host machione -fedora 15

Guest machine - fredora 15

My Linux machine -kernel version is 2.6.38 and I am using KVM

Openvswtch bridge - br0

 

Tap interface for guest - vnet0

 

I am running a vitual machine on kvm using openvswitch 1.2.2 

 

IF H/w offload  is supported on kvm , then on which interface (i.e. br0
or vnet0 )I need to set offload parameters for my virtual machine.

 

Regards

Amit Tewari

NHST

 




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