tree 02f6522050b9df9de63f3b11661d2312fff17f65
parent ae63bff0d7f333677e7ec532e9c315c74a510403
author Alexander Duyck <aduyck@mirantis.com> 1460668765 -0400
committer Jeff Kirsher <jeffrey.t.kirsher@intel.com> 1462147516 -0700

i40e/i40evf: Add support for GSO partial with UDP_TUNNEL_CSUM and GRE_CSUM

This patch makes it so that i40e and i40evf can use GSO_PARTIAL to support
segmentation for frames with checksums enabled in outer headers.  As a
result we can now send data over these types of tunnels at over 20Gb/s
versus the 12Gb/s that was previously possible on my system.

The advantage with the i40e parts is that this offload is mostly
transparent as the hardware still deals with the inner and/or outer IPv4
headers so the IP ID is still incrementing for both when this offload is
performed.

Signed-off-by: Alexander Duyck <aduyck@mirantis.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>