gso vs tso

[Raj Ravi]

TSO is a hardware feature whereas GSO is a software feature.

In the sense, TSO needs "the device" to break the frame into MTU sized segments.
BUT, GSO is a strategy followed by kernel to avoid processing smaller
packets  throughout the stack.

Refer this:
http://blogs.gnome.org/markmc/2008/05/28/checksums-scatter-gather-io-and-segmentation-offload/

<<<
GSO is a generalisation of this in the kernel. The idea is that you
delay segmenting a packet until the latest possible moment. In the
case where a device doesn’t support TSO, this would be just before
passing the skb to the driver. If the device does support TSO, the
unsegmented skb would be passed to the driver.
<<<


On Wed, Nov 19, 2014 at 11:40 AM, Varun Sharma <vsdssd at gmail.com> wrote:
> Hi,
>
> I have basic question about gso(generic segmentation offload) vs
> tso(TCP segmentation offload)
>
> 1. How both are different to each other?
>
> 2. If both are ON using ethtool which one is perform segmentation gso or tso ?
>
>
> Regards
> varun
>
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