Andrew, The following patch adds checksum offloading for the POWER5 Virtual Ethernet driver. In the case where the OS in the partitions communicating support this feature (i.e. both partition have this patch applied), no checksum will be created because the link is reliable. However, in the case where one of the OS in a partition does support this feature and the other doesn't (i.e. linux with patch applied talking to AIX), then the hypervisor will generate the checksum. Some levels of firmware will not support this feature but the code will figure it out and not enable it. Applies against the latest mainline and -mm trees. Please apply. Signed-off-by: Santiago Leon -- Santiago A. Leon Power Linux Development IBM Linux Technology Center