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-seg... <<< 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@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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