On Thu, Jul 30, 2015 at 11:15:38AM -0600, Jason Gunthorpe wrote: > On Thu, Jul 30, 2015 at 11:51:12AM -0400, Doug Ledford wrote: > > > In its current state, I have my doubts about this patch. However, it > > seems to me that this should be relatively easy to fix in such a way > > that you get 90%+ of the performance benefit, and can turn it on by > > default, and we don't cause any problems. > > The best way to implement this is to leverage all the checksum > offload work people did for virtualization. > > Forward the checksum offload status through the RC connection and > recover it on the other side. The current approach is to utilize IPoIB's private-data to exchange this information. > > Then the far side stack will know it is dealing with a partial > checksum packet and will properly regenerate the checksum if it > re-transmits. > > ie doing it this way doesn't totally break the netstack :) > > Jason > -- > To unsubscribe from this list: send the line "unsubscribe linux-rdma" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
